CN105101446B - A kind of method for collision avoidance and device for unauthorized frequency range - Google Patents
A kind of method for collision avoidance and device for unauthorized frequency range Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
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Abstract
The embodiment of the invention discloses a kind of method for collision avoidance of unauthorized band channels, including：The conflict avoidance parameter value of the listem-before-talk LBT mechanism based on load of different types of data is set；In the unauthorized frequency range, Conflict solving is carried out using the conflict avoidance parameter according to current data type；The conflict avoidance parameter is sent to user equipment (UE), so that UE carries out Conflict solving according to current data type in the unauthorized frequency range using the conflict avoidance parameter.The technical scheme of the embodiment of the present invention makes the LTE equipment of unauthorized frequency range carry out conflict avoidance and Conflict solving using different conflict avoidance parameters according to transmitted data type, ensure the preferential being serviced of high-priority service of LTE equipment, the support to different types of data transfer is effectively realized in unauthorized frequency range.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of method for collision avoidance and dress of unauthorized band channels
Put.
Background technology
With sharply increasing for service of mobile communication, the mandate frequency range in 3GPP networks is increasingly unsatisfactory for increasingly increasing
Portfolio, be beneficial to efficiency to further improve frequency resource in limited frequency resource, 3GPP tissue steerings are unauthorized
The access technology research of frequency range, LTE auxiliary access (LTE Assisted Access, LAA) technologies are introduced, to by awarding
Long Term Evolution (Long Term Evolution, LTE) access technology auxiliary weighed in frequency range uses unauthorized frequency range.
WiFi technology in unauthorized frequency range is to access/collision detection (Carrier Sense by Carrier Sense Multiple
Multiple Access/Collision Detection, CSMA/CA) interference between different WiFi equipments is eliminated, sending
Before data, WiFi equipment is first kept out of the way, and user could start to send signaling or data at the end of back off time.In order to
LTE equipment and WiFi equipment fair competition resource, 3GPP is allowed to introduce listem-before-talk (Listen in LAA in unauthorized frequency range
Before Talk, LBT) mechanism, for monitoring of the LTE equipment in unauthorized frequency range and detection idle channel.LBT mechanism exists
The channel of unauthorized frequency range is monitored and detected to idle channel detection (Clear Channel Assessment, the CAA) time, works as inspection
When measuring the unauthorized frequency range free time, start to take unauthorized frequency range progress data transmission.
In LTE system, the priority of base station and terminal transmission control signaling is consistently higher than the preferential of transmission services data
Level, and system sets different service quality (QoS, Quality of for the different types of service bearer of terminal
Service), therefore it can provide different priorities other business service, high-priority service is excellent to be always served before, to ensure
The service quality of high-priority service.But in current LAA technologies, service is not made a distinction to different types of data also
Effective mechanism.
The support to different types of data transfer how is effectively realized in LAA technologies, is urgently to be resolved hurrily one
Problem.
The content of the invention
The embodiment of the invention discloses a kind of method for collision avoidance of unauthorized band channels, for unauthorized frequency range
The conflict avoidance and Conflict solving of LTE equipment.Using technical scheme provided in an embodiment of the present invention, unauthorized frequency range can be made
LTE equipment carries out conflict avoidance and Conflict solving according to transmitted data type using different conflict avoidance parameters, makes excellent
The high data type of first level, which is easier to compete, arrives unauthorized channel, so as to ensure the preferential bedding and clothing of high-priority service in LTE equipment
Business, the support to different types of data transfer is effectively realized in unauthorized frequency range.
First aspect of the embodiment of the present invention provides a kind of method for collision avoidance of unauthorized band channels, including：
The conflict avoidance parameter value of the listem-before-talk LBT mechanism based on load of different types of data is set；The conflict
Avoid parameter value include competition window CW initial values, CW maximums, CW increasing degrees value, time delay Defer Period, just
Beginning idle channel detects CCA times and extension CCA times；The different types of data, including reference signal, control signaling and industry
Business data, wherein, the business datum includes the business datum of different service quality qos requirement；
In the unauthorized frequency range, conflict solution is carried out using the conflict avoidance parameter according to current data type
Certainly；
The conflict avoidance parameter is sent to user equipment (UE) so that UE in the unauthorized frequency range according to current
Data type carries out Conflict solving using the conflict avoidance parameter.
With reference in a first aspect, in the first possible implementation,
The conflict avoidance parameter that different types of data is set, including：It is described during setting transmission reference signal
Conflict avoidance parameter value when conflict avoidance parameter value is less than or equal to send control signaling；When setting sends control signaling
The conflict avoidance parameter value is less than or equal to send conflict avoidance parameter value during business datum；
The conflict avoidance parameter value set when the higher business of delay requirement in qos requirement sends data is smaller.
With reference in a first aspect, in second of possible implementation, it is described in the unauthorized frequency range according to transmission
Data type using the conflict avoidance parameter carry out Conflict solving, including：
Selection proceeds by Conflict solving using the conflict avoidance parameter of current data type；
When carrying out Conflict solving, when it is not idle to detect channel, randomly selects one into CW 1 and keep out of the way numerical value
N, proceed by and keep out of the way；
It is whether idle that channel is detected in each extension CCA times, channel for the free time, makes the N subtract 1 if detecting；
If it is not the free time to detect channel, start Defer Period, wherein, the Defer Period include M expansion
Open up the CCA times, M is more than or equal to 0；After the Defer Period terminate, continue to detect each extension CCA times, if detection
It is the free time to channel, then the N is subtracted 1；
When the N is kept to 0, start to send data in the unauthorized frequency range.
With reference to second of possible implementation of first aspect, in the third possible implementation, described
After Defer Period terminate, it is described continue detection extension the CCA times before, methods described also includes：
If channel keeps idle in Defer Period, keep the N constant, or the N is reduced to max [0, (N-
M)]；
If channel does not keep idle in Defer Period, keep the N constant, restarting Defer Period.
It is described in institute in the 4th kind of possible implementation with reference to second of possible implementation of first aspect
State in unauthorized frequency range and Conflict solving is carried out using the conflict avoidance parameter according to current data type, in addition to：
After sending data in the unauthorized frequency range, if detecting channel confliction, stop sending data immediately；
Current CW values are updated according to CW increasing degrees value, randomly selecting one between the CW values behind 1 and renewal keeps out of the way
Number N, proceeds by and keeps out of the way.
With reference to the 4th kind of possible implementation of first aspect, in the 5th kind of possible implementation, if the inspection
Channel confliction is measured, then stops sending data immediately, including：
When the ACK number of hybrid automatic repeat-request HARQ responses for not receiving UE exceedes specified threshold, and channel occupancy
When time reaches specified time threshold value, stop sending data immediately.
It is described by institute in the 6th kind of possible implementation with reference to first aspect or the first possible implementation
State conflict avoidance parameter and be sent to user equipment (UE), including：
The conflict avoidance parameter of different types of data is sent to by UE by radio resource control RRC message；Or
The conflict avoidance parameter of current data is sent to by UE by RRC information.
It is described to pass through in the 7th kind of possible implementation with reference to the 6th kind of possible implementation of first aspect
After the conflict avoidance parameter of different types of data is sent to UE by radio resource control RRC message, methods described is also wrapped
Include：
Pass through physical downlink control channel PDCCH or enhancing Physical Downlink Control Channel EPDCCH Downlink Control Information
DCI instruction UE carry out Conflict solving using the conflict avoidance parameter of current data type.
With reference in a first aspect, in the 8th kind of possible implementation, it is described set different types of data based on load
LBT mechanism conflict avoidance parameter value, including：
Set different types of data the maximum channel holding time with send different types of data CW increase and
Increase；
When the maximum channel holding time exceedes with the increase of the CW specifies Channel holding time, by described in most
Big Channel holding time is set as the specified Channel holding time.
Second aspect of the embodiment of the present invention provides a kind of method of the conflict avoidance for unauthorized frequency range, for terminal
Equipment, including：
Receive the conflict avoidance parameter value for the LBT mechanism based on load that base station is sent；
In the unauthorized frequency range, conflict solution is carried out using the conflict avoidance parameter according to current data type
Certainly；
Wherein, the conflict avoidance parameter value includes CW initial values, CW maximums, CW increasing degrees value, Defer
Period, initial CCA times and extension CCA times；The different types of data, including reference signal, control signaling and business
Data, the business datum include the business datum of different service quality qos requirement.
With reference to second aspect, in the first possible implementation, the LBT based on load for receiving base station and sending
The conflict avoidance parameter value of mechanism, including：
The conflict avoidance parameter for the different types of data that base station is sent is received by RRC information；Or
The conflict avoidance parameter for the current data type that base station is sent is received by RRC information.
It is described to pass through in second of possible implementation with reference to the first possible implementation of second aspect
After RRC information receives the conflict avoidance parameter for the different types of data that base station is sent, described using the reception
Before conflict avoidance parameter carries out Conflict solving, methods described also includes：
The PDCCH or EPDCCH of base station transmission DCI are received, the DCI is used to indicate the institute using current data type
State conflict avoidance parameter and carry out Conflict solving.
With reference to second aspect, in the third possible implementation, described in the current data type use of the basis
Conflict avoidance parameter carries out Conflict solving, including：
Selection uses the conflict avoidance parameter of current data type；
When carrying out Conflict solving, when it is not idle to detect channel, randomly selects one into CW 1 and keep out of the way numerical value
N, proceed by and keep out of the way；
It is whether idle that channel is detected in each extension CCA times, channel for the free time, makes the N subtract 1 if detecting；
If it is not the free time to detect channel, start Defer Period, wherein, the Defer Period include M expansion
Open up the CCA times, M is more than or equal to 0；After the Defer Period terminate, continue to detect each extension CCA times, if detection
It is the free time to channel, then the N is subtracted 1；
When the N is kept to 0, start to send data in the unauthorized frequency range.
With reference to the third possible implementation of second aspect, in the 4th kind of possible implementation, described
After Defer Period terminate, it is described continue detection extension the CCA times before, methods described also includes：
If channel keeps idle in Defer Period, keep the N constant, or the N is reduced to max [0, (N-
M)]；
If channel does not keep idle in Defer Period, keep the N constant, restarting Defer Period.
With reference to the 4th kind of possible implementation of second aspect, in the 5th kind of possible implementation, the basis
Current data type carries out Conflict solving using the conflict avoidance parameter, in addition to：
After sending data in the unauthorized frequency range, if detecting channel confliction, stop sending data immediately；
Current CW values are updated according to CW increasing degrees value, randomly selecting one between the CW values behind 1 and renewal keeps out of the way
Number N, proceeds by and keeps out of the way.
The third aspect of the embodiment of the present invention provides a kind of base station equipment, including：
Processing unit, the conflict avoidance parameter value of the LBT mechanism based on load for setting different types of data；It is described
Conflict avoidance parameter value includes CW initial values, CW maximums, CW increasing degrees value, Defer Period, initial CCA times and expansion
Open up the CCA times；The different types of data, including reference signal, control signaling and business datum, wherein, the business datum
Include the business datum of different service quality qos requirement；
The processing unit is additionally operable to, and in the unauthorized frequency range, the conflict is used according to current data type
Parameter is avoided to carry out Conflict solving；
Transmitting element, for the conflict avoidance parameter to be sent into UE, so that UE bases in the unauthorized frequency range
The data type of transmission carries out Conflict solving using the conflict avoidance parameter.
With reference to the third aspect, in the first possible implementation, the processing unit is specifically used for：
Punching when conflict avoidance parameter value when setting sends reference signal is less than or equal to send control signaling
It is prominent to avoid parameter value；Conflict avoidance parameter value when setting sends control signaling is less than or equal to send institute during business datum
State conflict avoidance parameter value；
The conflict avoidance parameter value set when the higher business of delay requirement in qos requirement sends data is smaller.
With reference to the third aspect, in second of possible implementation, the processing unit is specifically used for：
Selection proceeds by Conflict solving using the conflict avoidance parameter of current data type；
When carrying out Conflict solving, when it is not idle to detect channel, randomly selects one into CW 1 and keep out of the way numerical value
N, proceed by and keep out of the way；
It is whether idle that channel is detected in each extension CCA times, channel for the free time, makes the N subtract 1 if detecting；
If it is not the free time to detect channel, start Defer Period, wherein, the Defer Period include M expansion
Open up the CCA times, M is more than or equal to 0；After the Defer Period terminate, continue to detect each extension CCA times, if detection
It is the free time to channel, then the N is subtracted 1；
When the N is kept to 0, start to send data in the unauthorized frequency range.
With reference to second of possible implementation of the third aspect, in the third possible implementation, the processing
Unit is additionally operable to：
If channel keeps idle in Defer Period, keep the N constant, or the N is reduced to max [0, (N-
M)]；
If channel does not keep idle in Defer Period, keep the N constant, restarting Defer Period.
With reference to second of possible implementation of the third aspect, in the 4th kind of possible implementation, the processing
Unit is additionally operable to：
After sending data in the unauthorized frequency range, if detecting channel confliction, stop sending data immediately；
Current CW values are updated according to CW increasing degrees value, randomly selecting one between the CW values behind 1 and renewal keeps out of the way
Number N, proceeds by and keeps out of the way.
With reference to the 4th kind of possible implementation of the third aspect, in the 5th kind of possible implementation, the processing
Unit is specifically used for：
When the HARQ ACK numbers for not receiving UE exceed specified threshold, and Channel holding time arrival specified time threshold value
When, stop sending data immediately.
With reference to the third aspect and the first possible implementation, in the 6th kind of possible implementation, the transmission
Unit is specifically used for：
The conflict avoidance parameter of different types of data is sent to by UE by RRC information；Or
The conflict avoidance parameter of current data type is sent to by UE by RRC information.
With reference to the 6th kind of possible implementation of the third aspect, in the 7th kind of possible implementation, the transmission
Unit is additionally operable to：
Indicate that UE is rushed using the conflict avoidance parameter of current data type by PDCCH or EPDCCH DCI
It is prominent to solve.
With reference to the third aspect, in the 8th kind of possible implementation, the processing unit is specifically used for：
The maximum channel holding time of different types of data is set to increase with the CW of different types of data increase；
When the maximum channel holding time exceedes with the increase of the CW specifies Channel holding time, by described in most
Big Channel holding time is set as the specified Channel holding time.
Fourth aspect of the embodiment of the present invention provides a kind of terminal device, including：
Receiving unit, the conflict avoidance parameter value of the LBT mechanism based on load for receiving base station transmission；
Processing unit, in the unauthorized frequency range, being connect according to current data type using the receiving unit
The conflict avoidance parameter of receipts carries out Conflict solving；
Wherein, the conflict avoidance parameter value includes CW initial values, CW maximums, CW increasing degrees value, time delay
Defer Period, initial CCA times and extension CCA times；The different types of data, including reference signal, control signaling
And business datum, the business datum include the business datum of different service quality qos requirement.
With reference to fourth aspect, in the first possible implementation, the receiving unit is specifically used for：
The conflict avoidance parameter for the different types of data that base station is sent is received by RRC information；Or
The conflict avoidance parameter for the current data type that base station is sent is received by RRC information.
With reference to the first possible implementation of fourth aspect, in second of possible implementation, the reception
Unit is additionally operable to：
The PDCCH or EPDCCH of base station transmission DCI are received, the DCI is used to indicate the institute using current data type
State conflict avoidance parameter and carry out Conflict solving.
With reference to fourth aspect, in the third possible implementation, the processing unit is specifically used for：
Root selection uses the conflict avoidance parameter of current data type；
When carrying out Conflict solving, when it is not idle to detect channel, randomly selects one into CW 1 and keep out of the way numerical value
N, proceed by and keep out of the way；
It is whether idle that channel is detected in each extension CCA times, channel for the free time, makes the N subtract 1 if detecting；
If it is not the free time to detect channel, start Defer Period, wherein, the Defer Period include M expansion
Open up the CCA times, M is more than or equal to 0；After the Defer Period terminate, continue to detect each extension CCA times, if detection
It is the free time to channel, then the N is subtracted 1；
When the N is kept to 0, start to send data in the unauthorized frequency range.
With reference to the third possible implementation of fourth aspect, in the 4th kind of possible implementation, the processing
Unit is additionally operable to：
If channel keeps idle in Defer Period, keep the N constant, or the N is reduced to max [0, (N-
M)]；
If channel does not keep idle in Defer Period, keep the N constant, restarting Defer Period.
With reference to the third possible implementation of fourth aspect, in the 5th kind of possible implementation, the processing
Unit is additionally operable to：
After sending data in the unauthorized frequency range, if detecting channel confliction, stop sending data immediately；
Current CW values are updated according to CW increasing degrees value, randomly selecting one between the CW values behind 1 and renewal keeps out of the way
Number N, proceeds by and keeps out of the way.
As can be seen that using the technical scheme of the embodiment of the present invention, when can set base station to send different types of data
The listem-before-talk LBT mechanism based on load conflict avoidance parameter value, in the unauthorized frequency range, according to the data of transmission
Type carries out Conflict solving using the conflict avoidance parameter；And the conflict avoidance parameter is sent to user equipment (UE), with
UE is set to carry out Conflict solving using the conflict avoidance parameter according to the data type of transmission in the unauthorized frequency range.Pass through
The above method, the conflict avoidance parameter value for the different types of data that UE can be sent by receiving base station, in the unauthorized frequency
Duan Zhong, Conflict solving is carried out using corresponding conflict avoidance parameter according to the data type of transmission.Carried using the embodiment of the present invention
The technical scheme of confession, the high data type of priority can be made to be easier competition and arrive unauthorized channel, so as to ensure in LTE equipment
The preferential being serviced of high-priority service, the support to different types of data transfer is effectively realized in unauthorized frequency range.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, it will use below required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is the schematic diagram of the LBT mechanism provided in an embodiment of the present invention based on load；
Fig. 2 is a kind of flow signal of the method for collision avoidance for unauthorized band channels that the embodiment of the present invention one provides
Figure；
Fig. 3 is a kind of flow signal of the method for collision avoidance for unauthorized band channels that the embodiment of the present invention two provides
Figure；
Fig. 4 is the flow signal of the method for collision avoidance for another unauthorized band channels that the embodiment of the present invention three provides
Figure；
Fig. 5 is a kind of conflict avoidance parameter configuration schematic diagram that the embodiment of the present invention three provides；
Fig. 6 is a kind of DCI information bits schematic diagram that the embodiment of the present invention three provides；
Fig. 7 is the flow signal of the method for collision avoidance for another unauthorized band channels that the embodiment of the present invention four provides
Figure；
Fig. 8 is the flow signal of the method for collision avoidance for another unauthorized band channels that the embodiment of the present invention five provides
Figure；
Fig. 9 is the flow signal of the method for collision avoidance for another unauthorized band channels that the embodiment of the present invention six provides
Figure；
Figure 10 is that the flow of the method for collision avoidance for another unauthorized band channels that the embodiment of the present invention seven provides is shown
It is intended to；
Figure 11 is a kind of schematic diagram for base station equipment that the embodiment of the present invention eight provides；
Figure 12 is a kind of schematic diagram for terminal device that the embodiment of the present invention nine provides；
Figure 13 is the schematic diagram for another base station equipment that the embodiment of the present invention ten provides；
Figure 14 is the schematic diagram for another terminal device that the embodiment of the present invention 11 provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of protection of the invention.
Each embodiment is illustrated individually below.
Term " first ", " second ", " the 3rd " in description and claims of this specification and above-mentioned accompanying drawing and "
Four " etc. be to be used to distinguish different objects, rather than for describing particular order.In addition, term " comprising " and " having " and it
Any deformation, it is intended that cover non-exclusive include.Such as contain the process of series of steps or unit, method, be
The step of system, product or equipment are not limited to list or unit, but alternatively also including the step of not listing or list
Member, or alternatively also include for the intrinsic other steps of these processes, method, product or equipment or unit.
3GPP introduces listem-before-talk (Listen Before Talk, LBT) mechanism in LAA, for LTE equipment non-
Authorize the monitoring in frequency range and detection idle channel.LBT mechanism is broadly divided into LBT mechanism based on frame structure and based on load
LBT mechanism.
The principle of LBT mechanism based on load is referring to Fig. 1, in the LBT mechanism based on load, the idle letter of LTE equipment
Road detection carries out idle channel detection without the fixed cycle in the case of having data transmission.Before transmitting data, LTE equipment
Whether monitor channel is idle on next available initial CCA times immediately, if channel idle, is accounted in subsequent channel
With data are sent in the time, data are not otherwise sent；If monitor channel is busy or accounted in channel on the initial CCA times
Do not sent with data in the time, then started to extend the CCA times.One being randomly selected into q from 1 and keeping out of the way numerical value of N, wherein q is
The competition window CW sizes of CCA times are extended, CW is more than or equal to 4 and less than or equal to 32.Detected within each extension CCA times
Whether channel is idle, if detecting channel idle, subtracts 1 by N values, otherwise keeps N values constant, non-award then is taken when N is reduced to 0
Weigh band channels and send data, otherwise do not send data, the Channel holding time of unauthorized frequency range is (13/32) * q milliseconds.
The embodiment of the invention discloses a kind of method for collision avoidance of unauthorized band channels, carried using the embodiment of the present invention
The technical scheme of confession, the LTE equipment of unauthorized frequency range can be made to use different conflict avoidances according to transmitted data type
Parameter carries out conflict avoidance and Conflict solving, the high data type of priority is easier competition and arrives unauthorized channel, so as to protect
The preferential being serviced of high-priority service in LTE equipment is demonstrate,proved, is effectively realized in unauthorized frequency range and different types of data is passed
Defeated support.
The embodiment of the present invention one provides a kind of method for collision avoidance of unauthorized band channels for base station.Referring to Fig. 2,
Fig. 2 is a kind of schematic flow sheet of the method for collision avoidance for unauthorized band channels that the embodiment of the present invention one provides, wherein, such as
Shown in Fig. 2, this method may comprise steps of：
The conflict avoidance parameter value of the listem-before-talk LBT mechanism based on load when S101, setting different types of data.
Base station can be arranged on the conflict that unauthorized frequency range used during conflict avoidance according to different transmission data types
Avoid parameter.The conflict avoidance parameter value includes CW initial values, CW maximums, CW increasing degrees value, time delay Defer
Period, initial idle Channel Detection CCA times and extension CCA times.Wherein, CW increasing degrees value, which represents, there is channel confliction
The speed of CW increases afterwards, the CW after renewal are multiplied or are added with CW increasing degree values for current CW.CW initial values, CW maximums,
CW increasing degrees, Defer Period, initial CCA times and extension CCA times are smaller, then equipment is easier takes unauthorized frequency
The channel of section, for example, CW initial value and CW maximums are smaller, then the conflict avoidance of equipment keeps out of the way that numerical value of N is smaller more easily to be accounted for
Use channel；And for example, the Defer Period times are smaller, detect that the time of the busy rear wait of channel is shorter；And for example, initially
CCA times and extension CCA times smaller explanation idle channel detection time are smaller, easier busy channel；For another example, CW increases width
Angle value is smaller, and CW increases slower after there is channel confliction, and easier occupancy arrives channel.
Reference signal, control signaling and business datum can be divided into by sending data type.Uplink reference signals in LTE system
Including detection reference signal (SRS, Sounding Reference Signal), downlink reference signal includes cell reference signals
(CRS, Cell Reference Signal), reference signal (DRS, Discovery Reference Signal) etc. is found, on
Row control signaling is including Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel) and physically
Channel quality instruction (CQI, Channel in row shared channel (PUSCH, Physical Uplink Shared Channel)
Quality Indication), HARQ ACK/NACK feedbacks, dispatch request (SR, Scheduling Request), up RRC
Message etc., descending control signaling include Physical Downlink Control Channel (PDCCH, Physical Downlink Control
Channel), Physical Downlink Control Channel (EPDCCH, Enhanced Physical the Downlink Control of enhancing
Channel), physical mixed automatic re-transmission indicating channel (PHICH, Physical Hybrid ARQ Indicator
) and descending RRC information etc. Channel.Because the transmission delay requirement of reference signal, control signaling and business datum is gradually dropped
Low, the delay requirement of busy channel is gradually lowered, therefore base station can set and send reference signal, control signaling and business number
According to when conflict avoidance parameter be sequentially reduced, i.e., setting send reference signal when the conflict avoidance parameter value be less than or equal to hair
Send conflict avoidance parameter value during control signaling；The conflict avoidance parameter value of setting when sending control signaling is less than etc.
Conflict avoidance parameter value when business datum is sent；Further, since the transmission of upstream data is sent out according to base station scheduling
Send, that is, only scheduled UE can just participate in up LBT Channel Detections and carry out competitive channel, and upper line number is sent so setting
According to the conflict avoidance parameter value be less than or equal to send downlink service data when the conflict avoidance parameter value.
For the business datum of different QoS requirement, base station can also set different conflict avoidance parameters.Specifically,
Due in conflict avoidance parameter, CW initial values, CW maximums, CW increasing degrees, Defer Period, initial CCA times and expansion
The exhibition CCA times are smaller, then the easier channel for taking unauthorized frequency range of equipment, and base station can set delay requirement in qos requirement
Above-mentioned conflict avoidance parameter value is smaller when higher business sends data, you can with easier busy channel.
In some feasible embodiments, base station can also be set for different transmission data types, i.e., for hair
Different maximum channel holding times is set when sending reference signal, control signaling and business datum, wherein, it is different to sending
Different maximum channel holding times can also be set during the data of QoS business.In the prior art, maximum channel holding time
For (13/32) * q milliseconds, wherein q is CW sizes, and its value is more than or equal to 4 and is less than or equal to 32.In conflict avoidance, CW sizes may
Due to channel confliction appearance and more than 32, the increase modes of CW values can be superposition or the increased mode of multiple.Citing comes
Say, if CW values are that multiple is increased, CW renewal range values are 2, then base station increases to initial CW values 4 after detecting channel confliction
8, CW values increase to 16 by 8 after detecting channel confliction next time, and CW values increase to 32 by 16 after detecting channel confliction again, according to
This analogizes；Again for example, if CW value increase modes are the modes of superposition, CW renewal range values are 2, then base station detects channel
Initial CW values 4 are increased to 6 after conflict, CW values increase to 8 by 6 after detecting channel confliction next time, and the rest may be inferred.It is if maximum
Channel holding time increases with CW, then in the case where occurring conflicting, equipment by more difficult busy channel, will reduce number of devices
According to sending performance, for these reasons, base station can set a specified Channel holding time as maximum channel holding time
Maximum, Channel holding time is specified as 13 milliseconds for example, setting, then maximum channel holding time with CW increases when increasing
Maximum is no more than 13 milliseconds.
In some feasible embodiments, base station can in unauthorized frequency range competitive channel number of devices set it is non-
The conflict avoidance parameter value of frequency range is authorized, the number of devices of competitive channel is more in unauthorized frequency range, sets the conflict to keep away
It is bigger to exempt from parameter value so that channel is arrived in the more difficult competition of equipment, and it is maximum that the conflict avoidance parameter value includes CW initial values, CW
Value, CW increasing degrees, Defer Period, initial idle Channel Detection CCA times or extension CCA times.For example, unauthorized frequency
The more setting CW increasing degree values of number of devices of competitive channel are bigger in section, sent out so as to reduce when equipment room sends data
The probability of raw conflict.
In other feasible embodiments, the equipment that unauthorized band channels are competed with surrounding consults to determine the punching
It is prominent to avoid parameter value, wherein the conflict avoidance parameter value consulted includes CW initial values, CW maximums, CW increasing degrees, Defer
Period, initial CCA times and extension CCA times.For example, base station and surrounding other compete unauthorized frequency ranges base station it
Between, or held consultation between base station and WiFi access points (AP, Access Point) equipment, if base station 1 is within a specified time
The channel time of occupancy is more compared to the channel time that base station 2 within a specified time takes, then consults to reduce the above-mentioned conflict of base station 2
Parameter is avoided, or consults the conflict avoidance parameter of increase base station 1 so that base station 2 is easier to take unauthorized frequency range
Channel, such as base station 2 can reduce initial CCA or reduce extension CCA value, or reduce CW increasing degree values, or reduce
Defer Period etc..
S102, in the unauthorized frequency range, rushed according to current data type using the conflict avoidance parameter
It is prominent to solve.
, can after base station sets the conflict avoidance parameter value of the LBT mechanism based on load when sending different types of data
To start to carry out Conflict solving using the conflict avoidance parameter according to currently transmitted data type, namely according to sending ginseng
The business datum of signal, control signaling or current QoS is examined, conflict avoidance parameter is kept out of the way corresponding to selection.
Under the LBT mechanism based on load, before sending data, LTE equipment is immediately in next available initial CCA
Between upper monitor channel it is whether idle, if channel idles, data are sent in subsequent Channel holding time, are not otherwise sent
Data；If monitor channel is busy on the initial CCA times or data have not been sent in Channel holding time, start
Extend the CCA times.One is randomly selected into q keep out of the way numerical value of N from 1, wherein q is the competition window CW sizes of extension CCA times,
CW is more than or equal to 4 and less than or equal to 32.It is whether idle that channel is detected within each extension CCA times, if detecting channel sky
In the spare time, N values are subtracted 1, otherwise keep N values constant.In order to WiFi equipment is more fair enjoys unauthorized band channels, base station can be
Startup Defer Period when channel is busy are detected, continue to keep out of the way at the end of Defer Period.When N is reduced to
Unauthorized band channels are then taken when 0 and send data, otherwise do not send data, the Channel holding time of unauthorized frequency range is (13/
32) * q milliseconds.After transmitting data, when detecting channel confliction, stop sending data immediately, base station increases width according to CW
Degree updates current CW values, and randomly selecting one between the CW values behind 1 and renewal keeps out of the way several N, proceeds by and keeps out of the way.
S103, the conflict avoidance parameter is sent to UE so that UE in the unauthorized frequency range according to current number
According to type Conflict solving is carried out using the conflict avoidance parameter.
It is arranged on when unauthorized frequency range carries out conflict avoidance and is used according to different data types by step S101 base stations
Conflict avoidance parameter.The conflict avoidance parameter is divided into up conflict avoidance parameter and descending conflict avoidance parameter, including at the beginning of CW
Initial value, CW maximums, CW increasing degrees value, time delay Defer Period, initial idle Channel Detection CCA times and extension
The CCA times.Wherein, descending conflict avoidance parameter carries out Conflict solving, up conflict avoidance for base station in unauthorized frequency range
Parameter carries out Conflict solving for UE in unauthorized frequency range.When base station determines up conflict according to different transmission data types
After avoiding parameter, the conflict avoidance parameter can be sent to UE so that UE in the unauthorized frequency range according to currently transmitted
Data type carries out Conflict solving using the conflict avoidance parameter.
In some feasible embodiments, the conflict avoidance for sending different types of data is joined by RRC information in base station
Number is sent to UE.UE voluntarily selects suitable conflict avoidance parameter to carry out conflict solution according to the data type for being currently needed for sending
Certainly；Or base station can the data type that sent according to current UE, to UE send PDCCH or EPDCCH special control believe
Cease (DCI, Dedicated Control Information), the DCI is used to indicate UE rushing using currently transmitted data type
It is prominent to avoid parameter, that is, indicate that UE is joined using conflict avoidance when sending reference signal or control signaling or current QoS business datum
Number carries out Conflict solving.
In other feasible embodiments, the base station data type to be sent according to current UE, pass through RRC information
By UE, currently conflict avoidance parameter is sent to UE corresponding to the data type to be sent.For example, if current UE will be sent
PUCCH, base station by RRC information will send control signaling corresponding to conflict avoidance parameter be sent to UE.
As can be seen that using the technical scheme of the embodiment of the present invention, when can set base station to send different types of data
The listem-before-talk LBT mechanism based on load conflict avoidance parameter value, in the unauthorized frequency range, according to the data of transmission
Type carries out Conflict solving using the conflict avoidance parameter；And the conflict avoidance parameter is sent to user equipment (UE), with
UE is set to carry out Conflict solving using the conflict avoidance parameter according to the data type of transmission in the unauthorized frequency range.Pass through
The above method, the conflict avoidance parameter value for the different types of data that UE can be sent by receiving base station, in the unauthorized frequency
Duan Zhong, Conflict solving is carried out using corresponding conflict avoidance parameter according to the data type of transmission.Carried using the embodiment of the present invention
The technical scheme of confession, the LTE equipment of unauthorized frequency range can be made to use different conflict avoidances according to transmitted data type
Parameter carries out conflict avoidance and Conflict solving, the high data type of priority is easier competition and arrives unauthorized channel, so as to protect
The preferential being serviced of high-priority service in LTE equipment is demonstrate,proved, is effectively realized in unauthorized frequency range and different types of data is passed
Defeated support.In addition, start Defer Period when LTE equipment detects that channel is not idle, when Defer Period terminate
After continue to keep out of the way, and when detecting channel confliction immediately stop send data, make LTE equipment and WiFi equipment more public
Level land takes unauthorized band channels.
The embodiment of the present invention two provides a kind of method of the conflict avoidance of unauthorized band channels, makes for base station or UE
Conflict solving is carried out with conflict avoidance parameter, referring to Fig. 3, Fig. 3 is the schematic flow sheet of the embodiment of the present invention two, and the present invention is implemented
The method that example two provides includes step：
S201, when have data to send when, detect the channel in the initial CCA times.
When base station or UE have data transmission, whether monitor channel is empty on next available initial CCA times immediately
It is not busy.
S202, judge whether channel is idle in the initial CCA times, if channel idle in the initial CCA times, in subsequent letter
Data are sent in road holding time；If channel is not idle in the initial CCA times, start to expand after subsequent Channel holding time
Open up the CCA times.
According to the existing LBT technologies based on load, whether the snoop results for judging channel in the initial CCA times are empty
In the spare time, if snoop results are channel idle, data are sent in subsequent Channel holding time.
If snoop results are that channel is busy, according to the existing LBT technologies based on load, after the initial CCA times
Start to extend the CCA times after Channel holding time.
S203, randomly select one into CW from 1 and keep out of the way numerical value of N.
Start after extending the CCA times, keep out of the way numerical value of N from 1 to randomly selecting one between current CW, wherein, if not examining
Channel confliction is measured, CW is initial CW values, if detecting channel confliction before, CW is the CW after the extension of CW increasing degrees value
Value.
S204, channel is detected within each extension CCA times, whether idle judge to extend channel in the CCA times.
After obtaining backoff value N, proceed by and keep out of the way, or continue after Defer Period terminate to keep out of the way place
Reason, i.e., monitor the channel in each extension CCA times, detect whether as idle channel.
If S205, channel idle in the extension CCA times, make to keep out of the way numerical value of N and subtract 1.
When channel is idle in the detection extension CCA times, numerical value of N will be kept out of the way and subtract 1.
If S206, channel is busy in the extension CCA times, start Defer Period, wherein Defer Period length
For M extension CCA times.
When detecting that channel is busy in the extension CCA times, delay process is proceeded by, starts Defer
Period.Because the collision detection mechanism of WiFi equipment is also kept out of the way in channel idle, and the LBT mechanism of LTE equipment is examined
Data can be sent immediately by measuring channel idle, therefore LTE equipment is easier to seize channel in unauthorized frequency range.Set in LTE
It is standby to carry out introducing Defer Period during Conflict solving, start Defer Period when LTE equipment detects that channel is not idle,
Continue to keep out of the way after Defer Period terminate, LTE equipment and WiFi equipment can be made more liberally to take unauthorized frequency
Duan Xindao.
S207, detect channel in Defer Period.
S208, at the end of Defer Period, judge whether channel idle in Defer Period, if Defer
Channel idle in Period, continue to keep out of the way；If channel is busy in Defer Period, Defer is again started up
Period。
The monitor channel after Defer Period are started, when judging Defer Period at the end of Defer Period
Whether interior channel is idle, continues to keep out of the way if channel is the free time.In the specific implementation, can be according to the data class of transmission
Type is different, carries out different disposal, N can be subtracted into M at the end of the Defer Period times, it is max [0, (N- to make N values
M)], N values can also be kept constant at the end of the Defer Period times.For example, the control letter for delay sensitive
Order, subtracts M, for the relatively low data service of delay requirement, in Defer Period at the end of the Defer Period times by N
Keep N values constant at the end of time.In other concrete implementation modes, base station can be by some transmission data types
Defer Period are set to 0, so when detecting that channel is busy on the extension CCA times without delay process, for example, base
Defer Period when sending reference signal can be set to 0, that is, base station or UE detections when sending reference signal by standing
To channel it is busy when without delay process.
If monitor channel is busy in the Defer Period times, continues delay process, be again started up Defer
Period, it can just continue to keep out of the way when channel is idle so only within the Defer Period times, monitor next expansion
The channel in the CCA times is opened up, otherwise persistently carries out delay process.
S209, judge whether backoff value N reduces to 0, if not being kept to 0, continue to keep out of the way.
Judge whether N values are kept to 0 after N values subtract 1, if not being kept to 0, continue to keep out of the way, when monitoring next extension CCA
Interior channel.
If S210, backoff value N are kept to 0, terminate to keep out of the way, start to send data.
When N values reduce to 0, can terminate to keep out of the way transmission data.
Whether S211, after transmitting data, detection channel have conflict.
After sending data, base station or UE can continue to detect whether channel has conflict, if being not detected by channel confliction
Conflict avoidance can be terminated, or continue transmission data in Channel holding time；If detecting, channel confliction will be kept out of the way
It could continue to send data.Because LTE equipment does not support collision detection in the prior art, collision detection is introduced now and is being detected
Stop sending data at once during conflict and start to keep out of the way, LTE equipment and WiFi equipment can be made more liberally to take unauthorized frequency
Duan Xindao.
If S212, detecting that channel has conflict, stop sending data immediately；Current according to the renewal of CW increasing degrees value
One is randomly selected between CW, the CW behind 1 and renewal and keeps out of the way several N, is proceeded by and is kept out of the way.
If detecting that channel has conflict after sending data, stop sending data immediately, base station or UE there are a variety of detection letters
The method of road conflict.
The embodiment of the present invention proposes following collision detection method, and in down direction, lower line number is sent when base station does not receive
According to corresponding UE hybrid automatic repeat-request (HARQ, Hybrid Automatic Repeat Request) response (ACK,
Acknowledgement) number exceedes specified threshold, and during Channel holding time arrival specified time threshold value, judges current
Channel clashes.Wherein, not receiving UE ACK number includes negative response (NACK, Negative that base station receives
Acknowledgement number) and ACK is not both received does not receive NACK number yet.For example, when base station does not receive lower line number
According to corresponding UE ACK number reach 50%, and when present channel holding time reaches the 60% of maximum channel holding time,
Judge that current downlink channel clashes.In up direction, when UE does not receive the HARQ for the corresponding base station for sending upstream data
When ACK number exceedes specified threshold, judge that present channel clashes.Wherein, the number for not receiving the ACK of base station is received including UE
To NACK number and both do not received ACK or do not receive NACK number.For example, when UE does not receive the corresponding base of upstream data
When the ACK number stood reaches 50%, judge that current up channel clashes.
When unauthorized frequency range is only used for descending, base station is in the transmission data of the n-th subframe, sub-frame of uplink ability of the UE in n+4
Feedback, larger time delay can be brought according to HARQ feedback because base station detection be 4ms before channel whether have conflict.Such as
Fruit detects that channel has conflict early, so that it may stops sending data early, avoids further conflicting.Therefore the embodiment of the present invention carries
Go out, UE can reduce the time delay of HARQ ACK/NACK feedbacks, for example 4ms is reduced into 1ms, 2ms or 3ms, that is, reduce UE number
According to processing delay, if UE can quick decoding data, HARQ feedback time delay can be effectively reduced.Equally, for unauthorized frequency
When section is used for TDD system, the HARQ ACK/NACK of up-downgoing feedback delay is required for by reducing data processing time delay reality
It is existing.In the specific implementation, in order to further reduce data processing delay, can be in valid data previously sent one and significant figure
According to the less pretreatment bag using identical modulation coding mode, whether the valid data for quickly prejudging face of having no progeny can solve
Code is correct, if pretreatment bag decoding is correct, can tentatively judge that valid data below can be correctly decoded.
After channel confliction is detected, base station can update current CW according to CW increasing degrees value, behind 1 and renewal
One is randomly selected between CW and keeps out of the way several N, restarts to be kept out of the way.For example, after channel confliction is detected, if CW increases width
Angle value is 2 times that increase is original CW values, and current CW values are expanded into 2 times as the CW values kept out of the way.Restart the side kept out of the way
The method that method is kept out of the way when detecting that channel is busy with above-mentioned base station is identical.
S213, judge whether data are sent if channel Lothrus apterus.
When testing result is channel Lothrus apterus, judge whether to have sent all data, if sent all
Data then terminate conflict avoidance process, otherwise continue to send data.
If S214, data are not sent, continue to send data, otherwise terminate conflict avoidance.
As can be seen that the unauthorized frequency range contention resolution of the proposition using the embodiment of the present invention two, can make base station
Or UE detects when channel is busy startup Defer Period, carries out delay process, if after Defer Period terminate
Channel idle in Defer Period, it can keep N values are constant N values can also be successively decreased；If detected in Defer Period
Busy to channel, base station or UE restartings Defer Period continue delay process；In the technical program, sending out
After sending data, the feedback for the HARQ that base station or UE pass through receiving judges whether to send channel collision, if detecting channel confliction
Then stop sending data immediately, so as to avoid further channel confliction, the embodiment of the present invention two proposes compared with prior art
Contention-resolution schemes LTE equipment and WiFi equipment can be made more liberally to take unauthorized band channels, prevent reduce WiFi
The channel utilization rate of equipment.
The embodiment of the present invention three provides the method for collision avoidance of another unauthorized frequency range.Referring to Fig. 4, Fig. 4 is the present invention
A kind of schematic flow sheet of the method for collision avoidance for unauthorized band channels that embodiment three provides, wherein, as shown in figure 4, this
Method may comprise steps of：
The conflict avoidance parameter value of the listem-before-talk LBT mechanism based on load when S301, setting different types of data.
Base station can be arranged on the conflict that unauthorized frequency range used during conflict avoidance according to different transmission data types
Avoid parameter.The conflict avoidance parameter value includes CW initial values, CW maximums, CW increasing degrees value, time delay Defer
Period, initial idle Channel Detection CCA times and extension CCA times.Wherein, CW increasing degrees value, which represents, there is channel confliction
The speed of CW increases afterwards, the CW after renewal are multiplied or are added with CW increasing degree values for current CW.
Different data types can be divided into reference signal, control signaling and business datum.Due to reference signal, control signaling
Transmission delay requirement with business datum is gradually reduced, and the delay requirement of busy channel is gradually lowered, therefore base station can be set
Conflict avoidance parameter when sending reference signal, control signaling and business datum surely is sequentially reduced, i.e. setting sends reference signal
When the conflict avoidance parameter value be less than or equal to conflict avoidance parameter value when sending control signaling；Setting sends control
Conflict avoidance parameter value during signaling is less than or equal to send conflict avoidance parameter value during business datum.In addition, by
In the transmission of upstream data sent according to base station scheduling, that is, only scheduled UE can just participate in up LBT channels
Detection carrys out competitive channel, so setting the conflict avoidance parameter value for sending upstream data to be less than or equal to send downlink business number
According to when the conflict avoidance parameter value.
For the business datum of different QoS requirement, base station can also set different conflict avoidance parameters.Specifically,
Because conflict avoidance parameter value is smaller, then the easier channel for taking unauthorized frequency range of equipment, base station can be set in qos requirement
Above-mentioned conflict avoidance parameter value is smaller when the higher business of delay requirement sends data, you can with easier busy channel.
For example, base station is that reference signal, control signaling and business datum set different conflict avoidance parameters, is such as schemed
Shown in 5, Fig. 5 is conflict avoidance parameter configuration schematic diagram, and the business of different QoS is divided into time delay by base station according to the requirement to time delay
Extremely sensitive, time delay medium sensitivity and time delay less sensitive business, 3 kinds of conflict avoidance parameters are set for business datum.
S302, in the unauthorized frequency range, rushed according to current data type using the conflict avoidance parameter
It is prominent to solve.
Base station is according to sending data type selection conflict avoidance parameter and carrying out Conflict solving, and particular content is with reference to the present invention
Embodiment one or embodiment two, here is omitted.
S303, the conflict avoidance parameter of different types of data is sent to by UE by RRC information.
By step S301, when base station is arranged on unauthorized frequency range progress conflict avoidance according to different transmission data types
The conflict avoidance parameter of use.The conflict avoidance parameter of setting is divided into up conflict avoidance parameter and descending conflict avoidance parameter.
Wherein, descending conflict avoidance parameter carries out Conflict solving for base station in unauthorized frequency range, and up conflict avoidance parameter is used for
UE carries out Conflict solving in unauthorized frequency range.When base station determines up conflict avoidance parameter according to different transmission data types
Afterwards, the up conflict avoidance parameter can be sent to UE so that UE in the unauthorized frequency range according to current data type
Conflict solving is carried out using the conflict avoidance parameter.
Conflict avoidance parameter when sending reference signal, control signaling and business datum can be all sent to by base station
UE, wherein conflict avoidance parameter when sending business datum includes the different conflict avoidance parameters for sending different QoS requirement.Example
Such as, the different conflict avoidance parameter of 5 kinds shown in Fig. 5 is all sent to UE by base station.
S304, obtain the current transmission data types of UE.
By RRC information by send different types of data conflict avoidance parameter be sent to UE after, UE can according to work as
The preceding data type for needing to send, voluntarily selects suitable conflict avoidance parameter to carry out Conflict solving；Or base station can according to work as
The preceding UE data types to be sent, PDCCH or EPDCCH DCI is sent to UE, and the DCI is used to indicate that UE uses current data
The conflict avoidance parameter of type.When needing base station to use the conflict avoidance parameter of current data type to UE instructions by DCI,
Base station will first obtain the current transmission data types of UE, and UE can indicate the current number to be sent by up signaling to base station
According to type.
S305, the data type to be sent according to current UE, indicate that UE is used by PDCCH or EPDCCH DCI and work as
The conflict avoidance parameter of the preceding data type to be sent carries out Conflict solving.
After base station determines the current transmission data types of UE, indicate that UE uses current institute by PDCCH or EPDCCH DCI
The conflict avoidance parameter for the data type to be sent carries out Conflict solving.For example, if base station is according to different data types
There is provided the different conflict avoidance parameter in as shown in Figure 55 kind, can use 3 bit informations instruction UE current in DCI information
Transmission data type, if as shown in fig. 6, base station knows that the current data types to be sent of UE are reference signal, in DCI letters
3 bit informations in breath are arranged to " 001 ".
As can be seen that using the technical scheme of the embodiment of the present invention three, when can make the base station different types of data is set
The conflict avoidance parameter value of listem-before-talk LBT mechanism based on load, base station use the conflict according to current data type
Parameter is avoided to carry out Conflict solving；And conflict avoidance parameter is sent to UE, UE currently transmitted data type is obtained, then pass through
DCI indicates conflict avoidance parameter corresponding to the current data type to be sent to UE, so that UE is in the unauthorized frequency range
Conflict solving is carried out using the conflict avoidance parameter according to current data type.Use technology provided in an embodiment of the present invention
Scheme, the LTE equipment of unauthorized frequency range can be made to be carried out according to transmitted data type using different conflict avoidance parameters
Conflict avoidance and Conflict solving, the high data type of priority is easier competition and arrive unauthorized channel, so as to ensure LTE equipment
The middle preferential being serviced of high-priority service, the support to different types of data transfer is effectively realized in unauthorized frequency range.
The embodiment of the present invention four provides the method for collision avoidance of another unauthorized frequency range.Referring to Fig. 7, Fig. 7 is the present invention
A kind of schematic flow sheet of the method for collision avoidance for unauthorized band channels that example IV provides, wherein, as shown in fig. 7, this
Method may comprise steps of：
The conflict avoidance parameter value of the listem-before-talk LBT mechanism based on load when S401, setting different types of data.
Base station can be arranged on the conflict avoidance that unauthorized frequency range used during conflict avoidance according to different data types
Parameter.The conflict avoidance parameter value includes CW initial values, CW maximums, CW increasing degrees value, time delay Defer
Period, initial idle Channel Detection CCA times and extension CCA times.Wherein, CW increasing degrees value, which represents, there is channel confliction
The speed of CW increases afterwards, the CW after renewal are multiplied or are added with CW increasing degree values for current CW.
Different types of data can be divided into reference signal, control signaling and business datum.Due to reference signal, control signaling and
The transmission delay requirement of business datum is gradually reduced, and the delay requirement of busy channel is gradually lowered, therefore base station can be set
Conflict avoidance parameter when sending reference signal, control signaling and business datum is sequentially reduced.Further, since the hair of upstream data
Sending is sent according to base station scheduling, that is, only scheduled UE can just participate in up LBT Channel Detections and carry out competitive channel,
So conflict when the conflict avoidance parameter value for sending upstream data is set less than or equal to transmission downlink service data
Avoid parameter value.
For the business datum of different QoS requirement, base station can also set different conflict avoidance parameters, and setting QoS will
Above-mentioned conflict avoidance parameter value is smaller when asking the higher business of middle delay requirement to send data so that the high business of delay requirement can
To be easier busy channel.
Base station the number of devices of competitive channel can set the conflict avoidance parameter of unauthorized frequency range in unauthorized frequency range
Value, the number of devices of competitive channel is more in unauthorized frequency range, sets the conflict avoidance parameter value bigger so that equipment is more
It is not easy competition and arrives channel, the conflict avoidance parameter value includes CW initial values, CW maximums, CW increasing degrees, Defer
Period, initial idle Channel Detection CCA times or extension CCA times.For example, in unauthorized frequency range competitive channel number of devices
Mesh is more, and setting CW increasing degree values are bigger, so as to reduce the probability clashed when equipment room sends data.
S402, in the unauthorized frequency range, rushed according to current data type using the conflict avoidance parameter
It is prominent to solve.
According to sending data type selection conflict avoidance parameter and carrying out Conflict solving, particular content refer to this hair for base station
Bright embodiment one or embodiment two, here is omitted.
S403, obtain the current transmission data types of UE.
By step S401, when base station is arranged on unauthorized frequency range progress conflict avoidance according to different transmission data types
The conflict avoidance parameter of use.The conflict avoidance parameter of setting is divided into up conflict avoidance parameter and descending conflict avoidance parameter.
Wherein, descending conflict avoidance parameter carries out Conflict solving for base station in unauthorized frequency range, and up conflict avoidance parameter is used for
UE carries out Conflict solving in unauthorized frequency range.When base station determines up conflict avoidance parameter according to different transmission data types
Afterwards, the conflict avoidance parameter can be sent to UE, so that UE is used in the unauthorized frequency range according to current data type
The conflict avoidance parameter carries out Conflict solving.
Base station, can be by the conflict avoidance parameter of the currently transmitted data types of UE after up conflict avoidance parameter is provided with
UE is sent to by RRC information.Therefore, base station will first obtain the current transmission data types of UE, and UE can pass through up signaling
The current data type to be sent is indicated to base station.
S404, the conflict avoidance parameter of data type currently transmitted UE is sent to by UE by RRC information.
After base station determines the current transmission data types of UE, pass through RRC information rushing data type currently transmitted UE
It is prominent to avoid parameter from being sent to UE, so that UE carries out Conflict solving.For example, if base station is set according to different transmission data types
5 kinds of different conflict avoidance parameters as shown in Figure 5 are put, when base station knows that the current data types to be sent of UE are time delay
During extremely sensitive business datum, then base station by RRC information by conflict avoidance corresponding to the extremely sensitive business datum of time delay
Parameter is sent to UE.
As can be seen that using the technical scheme of the embodiment of the present invention four, when can make the base station different types of data is set
The conflict avoidance parameter value of listem-before-talk LBT mechanism based on load, base station use conflict avoidance according to current data type
Parameter carries out Conflict solving；And UE currently transmitted data type is obtained, conflict avoidance corresponding to the currently transmitted data of UE is joined
Number is sent to UE by RRC information, so that UE uses the conflict avoidance parameter of current data type in the unauthorized frequency range
Carry out Conflict solving.Using technical scheme provided in an embodiment of the present invention, the LTE equipment of unauthorized frequency range can be made according to being sent out
The data type sent carries out conflict avoidance and Conflict solving using different conflict avoidance parameters, makes the data type that priority is high
Easily unauthorized channel is arrived in competition, so as to ensure the preferential being serviced of high-priority service in LTE equipment, effectively unauthorized
The support to different types of data transfer is realized in frequency range.
The embodiment of the present invention five provides the method for collision avoidance of another unauthorized band channels for UE.Referring to Fig. 8,
Fig. 8 is a kind of schematic flow sheet of the method for collision avoidance for unauthorized band channels that the embodiment of the present invention one provides, wherein, such as
Shown in Fig. 8, this method may comprise steps of：
S501, the conflict avoidance parameter value for receiving the LBT mechanism based on load that base station is sent.
Base station is arranged on the conflict avoidance used when unauthorized frequency range carries out conflict avoidance according to different data types and joined
Number.The conflict avoidance parameter value include CW initial values, CW maximums, CW increasing degrees value, time delay Defer Period,
Initial idle Channel Detection CCA times and extension CCA times.UE upstream data type can be divided into reference signal, control signaling
And business datum.Due to reference signal, control signaling and business datum transmission delay requirement gradually reduce, busy channel when
Prolong requirement to be gradually lowered, therefore base station can set conflict avoidance when sending reference signal, control signaling and business datum
Parameter is sequentially reduced.
The conflict avoidance parameter of setting is divided into up conflict avoidance parameter and descending conflict avoidance parameter.Wherein, descending punching
Prominent to avoid parameter from carrying out Conflict solving in unauthorized frequency range for base station, up conflict avoidance parameter is used for UE in unauthorized frequency
Conflict solving is carried out in section.Because the transmission of upstream data is sent according to base station scheduling, that is, only scheduled UE
Up LBT Channel Detections can just be participated in and carry out competitive channel, so the conflict avoidance parameter value for the transmission upstream data that base station is set
Conflict avoidance parameter value during less than or equal to transmission downlink service data.When base station determines according to different transmission data types
After row conflict avoidance parameter, the conflict avoidance parameter can be sent to UE so that UE in the unauthorized frequency range according to transmission
Data type using the conflict avoidance parameter carry out Conflict solving.
In some feasible embodiments, base station can be joined the conflict avoidance of different types of data by RRC information
Number is all sent to UE, that is, UE can obtain conflict avoidance parameter corresponding to all data types by RRC information；Then
UE voluntarily selects correspondingly conflict avoidance parameter according to transmitted data type from whole conflict avoidance parameters, or, UE
The PDCCH DCI that base station transmission can be received know the conflict avoidance parameter of currently transmitted data type, thereby using the punching
It is prominent to avoid parameter from carrying out Conflict solving.
In other feasible embodiments, after the current data types to be sent of UE are known in base station, it can pass through
Conflict avoidance parameter corresponding to UE current data types is sent to UE by RRC information, and UE receives currently to be sent out by RRC information
Conflict avoidance parameter corresponding to the data type sent, so as to carry out Conflict solving.
S502, in the unauthorized frequency range, according to current data type use the reception conflict avoidance parameter
Carry out Conflict solving.
Under the LBT mechanism based on load, before sending data, UE is immediately on next available initial CCA times
Whether monitor channel is idle, if channel idle, data is sent in subsequent Channel holding time, otherwise do not send number
According to；If monitor channel is busy on the initial CCA times or data have not been sent in Channel holding time, start to expand
Open up the CCA times.One is randomly selected into q from 1 and keeps out of the way numerical value of N, and wherein q is the competition window CW sizes of extension CCA times, CW
More than or equal to 4 and less than or equal to 32.It is whether idle that channel is detected within each extension CCA times, if detecting channel idle,
N values are subtracted 1, otherwise keep N values constant.In order to WiFi equipment is more fair enjoys unauthorized band channels, UE can detected
To channel it is busy when start Defer Period, continue to keep out of the way at the end of Defer Period.When N is reduced to 0
Then take unauthorized band channels and send data, otherwise do not send data, the Channel holding time of unauthorized frequency range is (13/
32) * q milliseconds.After transmitting data, when detecting channel confliction, stop sending data immediately, UE is according to CW increasing degrees
Current CW values are updated, randomly selecting one between the CW values behind 1 and renewal keeps out of the way several N, proceeds by and keeps out of the way.
It can be seen that the technical scheme provided by the embodiment of the present invention five, the conflict that UE can be sent by receiving base station is kept away
Exempt from parameter value, conflict solution is carried out using corresponding conflict avoidance parameter according to current data type in the unauthorized frequency range
Certainly.The high data type of priority is set to be easier to compete and arrive unauthorized channel, so as to ensure in UE high-priority service preferentially quilt
Service, the support to different types of data transfer is effectively realized in unauthorized frequency range.
UE carries out the specific method of Conflict solving using conflict avoidance parameter and the base station of proposition of the embodiment of the present invention is carried out
The method of Conflict solving is identical, after when UE detects that channel is not idle, startup Defer Period, Defer Period terminates
Continue to keep out of the way, and stop transmission data immediately when detecting channel confliction, so that LTE UE and WiFi equipment
More liberally take unauthorized band channels.
The embodiment of the present invention six provides the method for collision avoidance of another unauthorized band channels for UE.Referring to Fig. 9,
Fig. 9 is a kind of schematic flow sheet of the method for collision avoidance for unauthorized band channels that the embodiment of the present invention one provides, wherein, such as
Shown in Fig. 9, this method may comprise steps of：
S601, the different types of data sent by RRC information reception base station conflict avoidance parameter.
The conflict avoidance parameter that base station is set is divided into up conflict avoidance parameter and descending conflict avoidance parameter.Wherein, under
Row conflict avoidance parameter carries out Conflict solving for base station in unauthorized frequency range, and up conflict avoidance parameter is awarded for UE non-
Conflict solving is carried out in power frequency range.It is scheduled because the transmission of upstream data is sent according to base station scheduling, that is, only
UE can just participate in up LBT Channel Detections and carry out competitive channel, so the conflict avoidance ginseng for the transmission upstream data that base station is set
Numerical value is less than or equal to send conflict avoidance parameter value during downlink service data.When base station is true according to different transmission data types
After fixed up conflict avoidance parameter, the conflict avoidance parameter can be sent to UE, so that UE bases in the unauthorized frequency range
The data type of transmission carries out Conflict solving using the conflict avoidance parameter.
Base station can will send reference signal, control signaling and conflict avoidance parameter during business datum by RRC information
UE all is sent to, that is, UE can obtain conflict avoidance parameter corresponding to all data types by RRC information.Wherein send out
Conflict avoidance parameter during business datum is sent to include the different conflict avoidance parameters for sending different QoS requirement.For example, base station will
5 kinds of different conflict avoidance parameters shown in Fig. 5 are all sent to UE.
S602, to base station indicate the current data type to be sent.
, can be according to being currently needed for sending after UE receives the conflict avoidance parameter of different types of data by RRC information
Data type, voluntarily select suitable conflict avoidance parameter to carry out Conflict solving；Or UE can be sent by receiving base station
DCI, know the conflict avoidance parameter of currently transmitted data type.Known as UE by DCI and use currently transmitted data type
Conflict avoidance parameter when, base station will first obtain the current transmission data types of UE, and UE can be referred to by up signaling to base station
Show the current data type to be sent.
S603, the DCI that base station is sent is received, DCI is used to indicate to use to send reference signal, control signaling or current QoS
Conflict avoidance parameter during business datum carries out Conflict solving.
After base station determines the current transmission data types of UE, indicate that UE uses current institute by PDCCH or EPDCCH DCI
The conflict avoidance parameter for the data type to be sent carries out Conflict solving.So UE can know currently transmitted number by receiving DCI
According to conflict avoidance parameter corresponding to type.For example, if base station is provided with as shown in Figure 5 according to different transmission data types
5 kinds of different conflict avoidance parameters, the current transmission data types of 3 bit informations instruction UE can be used in DCI information,
As shown in fig. 6, if base station knows that the current data types to be sent of UE are reference signal, 3 bit informations in DCI information
It is arranged to " 001 ", UE is known using conflict avoidance parameter progress Conflict solving corresponding to reference signal by receiving DCI information.
As can be seen that using the technical scheme of the embodiment of the present invention five, UE can be made to receive base station by RRC information and sent
Different types of data conflict avoidance parameter, UE by RRC information receive different types of data conflict avoidance parameter after,
The current data type to be sent is indicated to base station, receives the DCI that base station is sent, DCI is used to indicate using hair current data
The conflict avoidance parameter of type carries out Conflict solving.The technical scheme that the embodiment of the present invention five proposes can make unauthorized frequency
The UE of section carries out conflict avoidance and Conflict solving according to transmitted data type using different conflict avoidance parameters, makes preferential
The high data type of level, which is easier to compete, arrives unauthorized channel, so as to ensure the preferential being serviced of high-priority service in UE, effectively
The support to different types of data transfer is realized in unauthorized frequency range in ground.
The embodiment of the present invention seven provides the method for collision avoidance of another unauthorized band channels for UE.Referring to figure
10, Figure 10 be a kind of schematic flow sheet of the method for collision avoidance for unauthorized band channels that the embodiment of the present invention one provides, its
In, as shown in Figure 10, this method may comprise steps of：
S701, to base station indicate the current data type to be sent.
Base station is arranged on the conflict used when unauthorized frequency range carries out conflict avoidance according to different transmission data types and kept away
Exempt from parameter.The conflict avoidance parameter of setting is divided into up conflict avoidance parameter and descending conflict avoidance parameter.Wherein, descending conflict
Parameter is avoided to carry out Conflict solving in unauthorized frequency range for base station, up conflict avoidance parameter is used for UE in unauthorized frequency range
Middle carry out Conflict solving.Because the transmission of upstream data is sent according to base station scheduling, that is, only scheduled UE is
Up LBT Channel Detections can be participated in and carry out competitive channel, so the conflict avoidance parameter value for the transmission upstream data that base station is set is small
In equal to conflict avoidance parameter value when sending downlink service data.When base station determined according to different transmission data types it is up
After conflict avoidance parameter, the conflict avoidance parameter can be sent to UE so that UE in the unauthorized frequency range according to transmission
Data type carries out Conflict solving using the conflict avoidance parameter.
Base station after up conflict avoidance parameter is provided with, can the data type that sent according to current UE, by UE
The conflict avoidance parameter of currently transmitted data type is sent to UE by RRC information.Therefore, base station will first obtain the current hairs of UE
Data type is sent, UE can indicate the current data type to be sent by up signaling to base station.
S702, conflict avoidance parameter corresponding to the current data type that base station is sent is received by RRC information.
After base station determines the current transmission data types of UE, UE is used by the current data to be sent by RRC information
The conflict avoidance parameter of type carries out Conflict solving, that is, the conflict avoidance of the base station data type to be sent current UE
Parameter is sent to UE, and such UE can obtain conflict avoidance parameter corresponding to current data type.For example, if base station root
5 kinds of different conflict avoidance parameters as shown in Figure 5 are provided with according to different transmission data types, when the current institutes of UE are known in base station
When the data type to be sent is time delay extremely sensitive business datum, then base station is extremely sensitive by time delay by RRC information
Conflict avoidance parameter corresponding to business datum is sent to UE, and UE receives the current high sensitive of base station transmission by RRC information
Conflict avoidance parameter corresponding to business.
As can be seen that in the technical scheme that the embodiment of the present invention seven provides, base station is set according to different data types
After the conflict avoidance parameter used when unauthorized frequency range carries out conflict avoidance, UE indicates the current number to be sent to base station
According to type, base station obtains UE currently transmitted data type, and conflict avoidance parameter corresponding to currently transmitted data is disappeared by RRC
Breath is sent to UE, so that UE is carried out in the unauthorized frequency range according to current data type using the conflict avoidance parameter
Conflict solving.Using technical scheme provided in an embodiment of the present invention, the UE of unauthorized frequency range can be made according to transmitted data
Type carries out conflict avoidance using different conflict avoidance parameters and Conflict solving, the data type for making priority high are easily competing
Unauthorized channel is striven, so as to ensure the preferential being serviced of high-priority service in UE, the effectively realization pair in unauthorized frequency range
The support of different types of data transfer.
The embodiment of the present invention eight provides a kind of base station equipment, and the base station equipment is used to realize the embodiment of the present invention one to four
A kind of method of the conflict avoidance of the unauthorized frequency range proposed.Referring to Figure 11, the base station equipment a00 may include processing unit
A10 and transmitting element a20.
Processing unit a10, the conflict avoidance parameter of the LBT mechanism based on load during for setting different types of data
Value；The conflict avoidance parameter value include CW initial values, CW maximums, CW increasing degrees value, maximum channel holding time,
Defer Period, initial CCA times and extension CCA times；Processing unit is additionally operable to, in the unauthorized frequency range, according to
Current data type carries out Conflict solving using the conflict avoidance parameter；
Transmitting element a20, for the conflict avoidance parameter to be sent into UE, so that UE roots in the unauthorized frequency range
According to current data type Conflict solving is carried out using the conflict avoidance parameter.
Specifically, processing unit a10 can be arranged on unauthorized frequency range according to different data types and carry out conflict avoidance
Shi Caiyong conflict avoidance parameter.Reference signal, control signaling and business datum can be divided into by sending data type.In conflict avoidance
Parameter value is smaller, then the easier channel for taking unauthorized frequency range of equipment.
Because the transmission delay requirement of reference signal, control signaling and business datum gradually reduces, processing unit a10 can be with
Conflict avoidance ginseng when conflict avoidance parameter value when setting sends reference signal is less than or equal to send control signaling
Numerical value；Conflict when conflict avoidance parameter value when setting sends control signaling is less than or equal to send business datum is kept away
Exempt from parameter value；Further, since the transmission of upstream data is based on transmission after base station scheduling, that is to say, that is only scheduled
UE just need to participate in up LBT Channel Detections to carry out competitive channel, so the conflict avoidance parameter value that upstream data is sent
Conflict avoidance parameter value during less than or equal to descending transmission business datum.
For the business datum of different QoS requirement, processing unit a10 can also set different conflict avoidance parameters.Tool
For body, because conflict avoidance parameter value is smaller, the easier channel for taking unauthorized frequency range of equipment, qos requirement can be set
Above-mentioned conflict avoidance parameter value is smaller when the higher business of middle delay requirement sends data, you can with easier busy channel.
In some feasible embodiments, processing unit a10, which can be set, sends reference signal, control signaling and business
Maximum channel holding time during data, wherein, different maximums can also be set during data to sending different QoS business
Channel holding time.If maximum channel holding time increases with CW, in the case where occurring conflicting, equipment will be more difficult
Busy channel, device data sending performance will be reduced, therefore processing unit a10 can set the maximum of maximum channel holding time
Value, makes maximum channel holding time be no more than maximum when maximum channel holding time increases with CW increase.
In some feasible embodiments, processing unit a10 can according in unauthorized frequency range competitive channel set
Standby number sets the conflict avoidance parameter value of unauthorized frequency range, and the number of devices of competitive channel is more in unauthorized frequency range, if
It is bigger to put the conflict avoidance parameter so that channel is arrived in the more difficult competition of equipment.For example, competitive channel in unauthorized frequency range
Number of devices is more, and setting CW increasing degree values are bigger, so as to reduce the probability that equipment room sends data and clashed.
In other feasible embodiments, processing unit a10 with surrounding by competing setting for unauthorized band channels
It is standby to consult to determine the conflict avoidance parameter value, wherein the conflict avoidance parameter value consulted includes CW initial values, CW maximums, CW
Increasing degree, Defer Period, initial CCA times and extension CCA times.
After setting conflict avoidance parameter, processing unit a10 is carried out according to current data type using conflict avoidance parameter
Conflict solving, specifically, using following contention resolutions.Under the LBT mechanism based on load, before sending data, place
Whether idle unit a10 monitor channels on next available initial CCA times are managed, if channel idle, subsequent
Data are sent in Channel holding time, otherwise do not send data；If on the initial CCA times monitor channel for it is busy or
Data have not been sent in Channel holding time, then start to extend the CCA times.Processing unit a10 randomly selects one into q from 1
Keep out of the way numerical value of N, wherein q is the competition window CW sizes of extension CCA times, and CW is more than or equal to 4 and less than or equal to 32.Each
Extend in the CCA times whether processing unit a10 detections channel is idle, if detecting channel idle, N values are subtracted 1, otherwise keep N
It is worth constant.In order to WiFi equipment is more fair enjoys unauthorized band channels, can start when detecting that channel is busy
Defer Period, continue to keep out of the way at the end of Defer Period.Unauthorized frequency range letter is then taken when N is reduced to 0
Road sends data, does not otherwise send data.After transmitting data, when processing unit a10 detects channel confliction, stop immediately
Data are only sent, processing unit a10 updates current CW values according to CW increasing degrees, is selected at random between the CW values behind 1 and renewal
Take one to keep out of the way several N, proceed by and keep out of the way.
After processing unit a10 determines up conflict avoidance parameter according to different data types, transmitting element a20 should
Conflict avoidance parameter is sent to UE, so that UE is kept away in the unauthorized frequency range according to current data type using the conflict
Exempt from parameter and carry out Conflict solving.
In some feasible embodiments, transmitting element a20 will send reference signal, control signaling by RRC information
UE is sent to conflict avoidance parameter during business datum, and conflict avoidance parameter when sending business datum includes hair
Send the different conflict avoidance parameters of different QoS requirement.UE closes according to the data type for being currently needed for sending, voluntarily selection
Suitable conflict avoidance parameter carries out Conflict solving；Or can the data type that sent according to current UE, transmitting element a20
PDCCH or EPDCCH DCI is sent to UE, the DCI is used for the conflict avoidance parameter for indicating that UE uses currently transmitted data type,
Indicate that UE carries out conflict solution using conflict avoidance parameter when sending reference signal or control signaling or current QoS business datum
Certainly.
In other feasible embodiments, the data type to be sent according to current UE, transmitting element a20 passes through
By UE, currently conflict avoidance parameter is sent to UE to RRC information corresponding to the data type to be sent, and will send reference signal
Or the conflict avoidance parameter during QoS business datums of control signaling or current UE is sent to UE.
As can be seen that the technical scheme of the embodiment of the present invention make base station set different types of data when the elder generation based on load
The conflict avoidance parameter value of LBT mechanism is said after listening, the punching is used according to current data type in the unauthorized frequency range
It is prominent to avoid parameter from carrying out Conflict solving；And the conflict avoidance parameter is sent to user equipment (UE), so that UE non-awards described
Weigh in frequency range and Conflict solving is carried out using the conflict avoidance parameter according to current data type.By the above method, UE can
With the conflict avoidance parameter value of the different types of data sent by receiving base station, in the unauthorized frequency range, according to current
Data type using corresponding conflict avoidance parameter carry out Conflict solving.Using technical scheme provided in an embodiment of the present invention,
The base station equipment of unauthorized frequency range can be made to be conflicted according to transmitted data type using different conflict avoidance parameters
Avoid and Conflict solving, the high data type of priority is easier to compete and arrive unauthorized channel, so as to ensure height in LTE equipment
The preferential being serviced of priority service, the support to different types of data transfer is effectively realized in unauthorized frequency range.
The embodiment of the present invention nine provides a kind of terminal device, and the terminal device is used to realize that the embodiment of the present invention five to seven carries
A kind of method for collision avoidance of the unauthorized frequency range gone out.Referring to Figure 12, the terminal device may include receiving unit b10 and processing
Unit b20.
Receiving unit b10, the conflict avoidance parameter value of the LBT mechanism based on load for receiving base station transmission；
Processing unit b20, in the unauthorized frequency range, according to current data type rushing using the reception
It is prominent to avoid parameter from carrying out Conflict solving；
The conflict avoidance parameter that base station is set is divided into up conflict avoidance parameter and descending conflict avoidance parameter.The conflict
Parameter value is avoided to include CW initial values, CW maximums, CW increasing degrees value, maximum channel holding time, time delay Defer
Period, initial CCA times and extension CCA times.Descending conflict avoidance parameter is rushed for base station in unauthorized frequency range
Prominent to solve, up conflict avoidance parameter carries out Conflict solving for UE in unauthorized frequency range.When base station is according to different transmissions
After data type determines up conflict avoidance parameter, UE receives up conflict avoidance parameter by receiving unit b10, so that UE exists
Conflict solving is carried out using the conflict avoidance parameter according to current data type in the unauthorized frequency range.
In some feasible embodiments, the whole of different types of data can be sent to by base station by RRC information
UE, that is, receiving unit b10 obtain conflict avoidance parameter corresponding to all data types by RRC information；Then processing is single
First b20 voluntarily selects correspondingly conflict avoidance parameter according to transmitted data type from whole conflict avoidance parameters, or,
Receiving unit b10 can receive the conflict avoidance that the PDCCH or EPDCCH DCI that base station is sent know transmitted data type
Parameter, so that processing unit b20 carries out Conflict solving with the conflict avoidance parameter.
In other feasible embodiments, after the current data types to be sent of UE are known in base station, it can pass through
Conflict avoidance parameter corresponding to UE current data types is sent to UE by RRC information, and receiving unit b10 is received by RRC information
Conflict avoidance parameter corresponding to the current data type to be sent, so that processing unit b20 carries out Conflict solving.
After obtaining conflict avoidance parameter, processing unit a20 is carried out according to current data type using conflict avoidance parameter
Conflict solving, specifically, using following contention resolutions.Under the LBT mechanism based on load, carried out before sending data
Conflict solving, whether processing unit a20 monitor channels on next available initial CCA times are idle, if channel idle,
Data are then sent in subsequent Channel holding time, otherwise do not send data；If monitor channel is on the initial CCA times
It is busy or data have not been sent in Channel holding time, then start to extend the CCA times.Processing unit a20 from 1 into q with
Machine chooses one and keeps out of the way numerical value of N, and wherein q is the competition window CW sizes of extension CCA times, CW be more than or equal to 4 and less than etc.
In 32.Whether processing unit a20 detections channel is idle within each extension CCA times, if detecting channel idle, N values are subtracted
1, otherwise keep N values constant.In order to WiFi equipment is more fair enjoys unauthorized band channels, channel non-NULL can detected
Idle starts Defer Period, continues to keep out of the way at the end of Defer Period.Non- award then is taken when N is reduced to 0
Weigh band channels and send data, otherwise do not send data.After transmitting data, when processing unit a20 detects channel confliction
When, stop sending data immediately, processing unit a20 updates current CW values according to CW increasing degrees, 1 and the CW values after updating it
Between randomly select one and keep out of the way several N, proceed by and keep out of the way.
It can be seen that the different pieces of information class that the terminal device provided by the embodiment of the present invention nine can be sent by receiving base station
The conflict avoidance parameter value of type, corresponding conflict avoidance parameter is used according to current data type in the unauthorized frequency range
Carry out Conflict solving.The high data type of priority is easier competition and arrive unauthorized channel, so as to ensure high priority in UE
The preferential being serviced of business, the support to different types of data transfer is effectively realized in unauthorized frequency range.
The embodiment of the present invention ten provides another base station equipment, for realizing one kind described in the embodiment of the present invention one to four
The method for collision avoidance of unauthorized frequency range.Referring to Figure 13, the equipment c00 may include at least one bus c10 and bus c10
Connected at least one processor c20 and at least one memory c30, the communication interface c40 being connected with bus c20, wherein
The processor c20 calls the code in memory c30 to realize the technical scheme by bus c10.
The conflict avoidance parameter value of the LBT mechanism based on load during processor c20 setting different types of data；The punching
It is prominent to avoid parameter value from including CW initial values, CW maximums, CW increasing degrees value, Defer Period, initial CCA times and extension
The CCA times；In the unauthorized frequency range, conflict solution is carried out using the conflict avoidance parameter according to current data type
Certainly.
After processor sets conflict avoidance parameter, the conflict avoidance parameter is sent to by UE by communication interface c40, with
UE is set to carry out Conflict solving using the conflict avoidance parameter according to current data type in the unauthorized frequency range.
Specifically, processor c20, which can be arranged on unauthorized frequency range according to different transmission data types and carry out conflict, keeps away
The conflict avoidance parameter used when exempting from.Reference signal, control signaling and business datum can be divided into by sending data type.Kept away in conflict
Exempt from that parameter value is smaller, then the easier channel for taking unauthorized frequency range of equipment.
Because the transmission delay requirement of reference signal, control signaling and business datum gradually reduces, processor c20 can be set
Conflict avoidance parameter when conflict avoidance parameter value when sending reference signal surely is less than or equal to send control signaling
Value；Conflict avoidance parameter value when setting sends control signaling is less than or equal to send conflict avoidance during business datum
Parameter value；Further, since the transmission of upstream data is based on transmission after base station scheduling, that is to say, that is only scheduled
UE just needs to participate in up LBT Channel Detections to carry out competitive channel, so the conflict avoidance parameter value that upstream data is sent is small
Conflict avoidance parameter value when equal to descending transmission business datum.
For the business datum of different QoS requirement, processor c20 can also set different conflict avoidance parameters.Specifically
For, because conflict avoidance parameter value is smaller, then the easier channel for taking unauthorized frequency range of equipment, can set qos requirement
Above-mentioned conflict avoidance parameter value is smaller when the higher business of middle delay requirement sends data, you can with easier busy channel.
In some feasible embodiments, when processor c20 can set the maximum channel of different types of data to take
Between, wherein, different maximum channel holding times can also be set during data to sending different QoS business.It is if maximum
Channel holding time increases with CW, then in the case where occurring conflicting, equipment by more difficult busy channel, will reduce number of devices
According to sending performance, therefore processor c20 can set the maximum of maximum channel holding time, when maximum channel holding time is with CW
Increase and maximum channel holding time is no more than maximum when increasing.
In some feasible embodiments, processor c20 can be according to the equipment of the competitive channel in unauthorized frequency range
Number sets the conflict avoidance parameter value of unauthorized frequency range, and the number of devices of competitive channel is more in unauthorized frequency range, sets
The conflict avoidance parameter is bigger so that channel is arrived in the more difficult competition of equipment.For example, competitive channel is set in unauthorized frequency range
The more setting CW increasing degree values of standby number are bigger, so as to reduce the probability that equipment room sends data and clashed.
In other feasible embodiments, equipment of the processor c20 by competing unauthorized band channels with surrounding
Consult to determine the conflict avoidance parameter value.
After setting conflict avoidance parameter, processor c20 is rushed according to current data type using conflict avoidance parameter
It is prominent to solve, specifically, using following contention resolutions.Under the LBT mechanism based on load, rushed before sending data
Prominent to solve, whether monitor channel is idle on next available initial CCA times, if channel idle, in subsequent letter
Data are sent in road holding time, otherwise do not send data；If monitor channel is busy or believed on the initial CCA times
Data have not been sent in road holding time, then start to extend the CCA times.Processing unit a10 randomly selects one into q from 1 and moved back
Numerical value of N is kept away, wherein q is the competition window CW sizes of extension CCA times, and CW is more than or equal to 4 and less than or equal to 32.In each expansion
Open up in the CCA times whether detection channel is idle, if detecting channel idle, N values are subtracted 1, otherwise keep N values constant.In order to
WiFi equipment is more fair to enjoy unauthorized band channels, can start Defer Period when detecting that channel is busy, when
Continue to keep out of the way at the end of Defer Period.Unauthorized band channels are then taken when N is reduced to 0 and send data, otherwise
Do not send data.After transmitting data, when detecting channel confliction, stop sending data immediately, according to CW increasing degrees
Current CW values are updated, randomly selecting one between the CW values behind 1 and renewal keeps out of the way several N, proceeds by and keeps out of the way.
After processor c20 determines up conflict avoidance parameter according to different transmission data types, pass through communication interface
The conflict avoidance parameter is sent to UE by b40, so that UE uses institute in the unauthorized frequency range according to current data type
State conflict avoidance parameter and carry out Conflict solving.
In some feasible embodiments, processor c20 sends RRC information by communication interface b40 will send reference
Conflict avoidance parameter when signal, control signaling and business datum is sent to UE, conflict when sending business datum
Parameter is avoided to include the different conflict avoidance parameters for sending different QoS requirement.UE is according to the data for being currently needed for sending
Type, suitable conflict avoidance parameter is voluntarily selected to carry out Conflict solving；Or can the data class that sent according to current UE
Type, processor c20 send PDCCH or EPDCCH DCI by communication interface b40 to UE, and the DCI is used to indicate that UE is used currently
Send the conflict avoidance parameter of data type.
In other feasible embodiments, the data type to be sent according to current UE, processor c20 passes through logical
Believe that currently conflict avoidance parameter is sent to UE to interface b40 transmissions RRC information corresponding to the data type to be sent by UE, will
Conflict avoidance parameter when sending reference signal or the QoS business datums of control signaling or current UE is sent to UE.
As can be seen that the technical scheme of the embodiment of the present invention make base station set different types of data when the elder generation based on load
The conflict avoidance parameter value of LBT mechanism is said after listening, the punching is used according to current data type in the unauthorized frequency range
It is prominent to avoid parameter from carrying out Conflict solving；And the conflict avoidance parameter is sent to user equipment (UE), so that UE non-awards described
Weigh in frequency range and Conflict solving is carried out using the conflict avoidance parameter according to current data type.By the above method, UE can
With the conflict avoidance parameter value of the different types of data sent by receiving base station, in the unauthorized frequency range, according to current
Data type using corresponding conflict avoidance parameter carry out Conflict solving.Using technical scheme provided in an embodiment of the present invention,
The base station equipment of unauthorized frequency range can be made to be conflicted according to transmitted data type using different conflict avoidance parameters
Avoid and Conflict solving, the high data type of priority is easier to compete and arrive unauthorized channel, so as to ensure height in LTE equipment
The preferential being serviced of priority service, the support to different types of data transfer is effectively realized in unauthorized frequency range.
The embodiment of the present invention 11 provides another terminal device, for realizing one described in the embodiment of the present invention five to seven
The method for collision avoidance of the unauthorized frequency range of kind.Referring to Figure 14, the equipment d00 may include at least one bus d10 and bus
At least one processor d20 connected d10 and at least one memory d30, the communication interface d40 being connected with bus d20, its
Described in processor d20 call the code in memory d30 to realize the technical scheme by bus d10.
Processor d20 receives the conflict avoidance parameter for the LBT mechanism based on load that base station is sent by communication interface d40
Value, then in the unauthorized frequency range, Conflict solving is carried out using the conflict avoidance parameter of the reception.
The conflict avoidance parameter that base station is set is divided into up conflict avoidance parameter and descending conflict avoidance parameter.The conflict
Parameter value is avoided to include CW initial values, CW maximums, CW increasing degrees value, time delay Defer Period, initial CCA times
With the extension CCA times.Descending conflict avoidance parameter carries out Conflict solving, up conflict avoidance for base station in unauthorized frequency range
Parameter carries out Conflict solving for terminal in unauthorized frequency range.When base station determines that up conflict is kept away according to different data types
After exempting from parameter, terminal receives up conflict avoidance parameter by communication interface d40, so that UE bases in the unauthorized frequency range
Current data type carries out Conflict solving using the conflict avoidance parameter.
In some feasible embodiments, base station can be joined the conflict avoidance of different types of data by RRC information
Number is all sent to UE, that is, processor d20 can receive RRC information by communication interface d40 and obtain all data types pair
The conflict avoidance parameter answered, wherein conflict avoidance parameter when sending business datum includes sending the different of different QoS requirement
Conflict avoidance parameter；Then processor d20 voluntarily selects phase according to current data type from whole conflict avoidance parameters
Ground conflict avoidance parameter is answered, or, processor d20 can be received the PDCCH DCI that base station is sent by communication interface d40 and be known
The conflict avoidance parameter of transmitted data type, Conflict solving is carried out thereby using the conflict avoidance parameter.
In other feasible embodiments, after the current data types to be sent of UE are known in base station, it can pass through
Conflict avoidance parameter corresponding to UE current data types is sent to UE by RRC information, that is, processor d20 passes through RRC information
Conflict avoidance parameter corresponding to the current data type to be sent is received, so as to carry out Conflict solving.
After obtaining conflict avoidance parameter, processor d20 is rushed according to current data type using conflict avoidance parameter
It is prominent to solve, specifically, using following contention resolutions.Under the LBT mechanism based on load, rushed before sending data
Prominent to solve, whether monitor channel is idle on next available initial CCA times, if channel idle, in subsequent letter
Data are sent in road holding time, otherwise do not send data；If monitor channel is busy or believed on the initial CCA times
Data have not been sent in road holding time, then start to extend the CCA times.One is randomly selected into q keep out of the way numerical value of N from 1, wherein
Q is the competition window CW sizes of extension CCA times, and CW is more than or equal to 4 and less than or equal to 32.Within each extension CCA times
Whether idle detect channel, if detecting channel idle, N values are subtracted 1, otherwise keep N values constant.In order to more public with WiFi equipment
It is flat to enjoy unauthorized band channels, Defer Period can be started when detecting that channel is busy, as Defer Period
At the end of continue to keep out of the way.Unauthorized band channels are then taken when N is reduced to 0 and send data, otherwise do not send data.
After sending data, when detecting channel confliction, stop sending data immediately, current CW values updated according to CW increasing degrees,
One is randomly selected between CW values behind 1 and renewal and keeps out of the way several N, is proceeded by and is kept out of the way.
It can be seen that the different pieces of information class that the terminal device provided by the embodiment of the present invention nine can be sent by receiving base station
The conflict avoidance parameter value of type, corresponding conflict avoidance parameter is used according to current data type in the unauthorized frequency range
Carry out Conflict solving.The high data type of priority is easier competition and arrive unauthorized channel, so as to ensure Gao You in LTE equipment
The first preferential being serviced of level business, the support to different types of data transfer is effectively realized in unauthorized frequency range.
It will be recognized by those of ordinary skill in the art that the possibility implementation of various aspects of the invention or various aspects
System, method or computer program product can be embodied as.In addition, each aspect of the present invention or various aspects
Possible implementation can use the form of computer program product, and computer program product refers to be stored in computer-readable Jie
Computer readable program code in matter.
Computer-readable medium can be mechanized data medium or computer-readable recording medium.Computer can
Read storage medium including but not limited to electronics, magnetic, optics, electromagnetism, infrared or semiconductor system, equipment either device or
Foregoing is any appropriately combined, such as random access memory (RAM), read-only storage (ROM), the read-only storage of erasable programmable
Device (EPROM or flash memory), optical fiber, portable read-only storage (CD-ROM).
Processor in computer reads the computer readable program code being stored in computer-readable medium so that place
Reason device is able to carry out function action specified in the combination of each step or each step in flow charts；Generation is implemented in block diagram
Each piece or each piece of combination specified in function action device.
Computer readable program code can be performed completely on the computer of user, partly held on the computer of user
Row, as single software kit, partly on the computer of the sheet of user and part on the remote computer, or exist completely
Performed on remote computer or server.It is also noted that in some alternate embodiments, in flow charts each step,
Or each piece of function of indicating may not be occurred by the order indicated in figure in block diagram.For example, dependent on involved function, connect
Two steps or two blocks shown in even may be actually executed substantially concurrently, or these blocks sometimes may be by with phase
Reverse-order performs.
A kind of method and device of the data transfer of unauthorized frequency range disclosed in the embodiment of the present invention has been carried out in detail above
Thin to introduce, specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said
It is bright to be only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, foundation
The thought of the present invention, there will be changes in specific embodiments and applications, in summary, this specification content is not
It is interpreted as limitation of the present invention.
Claims (30)
1. a kind of method of conflict avoidance for unauthorized frequency range, it is characterised in that including：
Base station sets the conflict avoidance parameter value of the listem-before-talk LBT mechanism based on load of different types of data；The conflict
Avoid parameter value include competition window CW initial values, CW maximums, CW increasing degrees value, time delay Defer Period, just
Beginning idle channel detects CCA times and extension CCA times；The different types of data, including reference signal, control signaling and industry
Business data, wherein, the reference signal includes uplink reference signals and/or downlink reference signal, and the control signaling includes upper
Row control signaling and/or descending control signaling, the business datum include the business datum of different service quality qos requirement, institute
Conflict avoidance parameter value is stated to correspond with the data type；
In the unauthorized frequency range, base station uses institute corresponding with the current data type according to current data type
State conflict avoidance parameter and carry out Conflict solving；
The conflict avoidance parameter is sent to user equipment (UE) so that UE in the unauthorized frequency range according to current data
Type carries out Conflict solving using the conflict avoidance parameter corresponding with the current data type, and the UE is currently quilt
The UE of scheduling.
2. according to the method for claim 1, it is characterised in that
The conflict avoidance parameter that different types of data is set, including：Setting sends conflict during reference signal
Parameter value is avoided less than or equal to conflict avoidance parameter value when sending control signaling；It is described when setting sends control signaling
Conflict avoidance parameter value is less than or equal to send conflict avoidance parameter value during business datum；
The conflict avoidance parameter value set when the higher business of delay requirement in qos requirement sends data is smaller.
3. according to the method for claim 1, it is characterised in that it is described in the unauthorized frequency range according to current data
Type carries out Conflict solving using the conflict avoidance parameter corresponding with the current data type, including：
Selection proceeds by Conflict solving using the conflict avoidance parameter corresponding to current data type；
When carrying out Conflict solving, when it is not idle to detect channel, randomly selects one into CW 1 and keep out of the way numerical value of N, open
Beginning is kept out of the way；
It is whether idle that channel is detected in each extension CCA times, channel for the free time, makes the N subtract 1 if detecting；
If it is not the free time to detect channel, start Defer Period, wherein, the Defer Period include M extension CCA
Time, M are more than or equal to 0；After the Defer Period terminate, continue to detect each extension CCA times, if detecting channel
For the free time, then the N is set to subtract 1；
When the N is kept to 0, start to send data in the unauthorized frequency range.
4. according to the method for claim 3, it is characterised in that after the Defer Period terminate, it is described after
Before the continuous detection extension CCA times, methods described also includes：
If channel keeps idle in Defer Period, keep the N constant, or the N is reduced to max [0, (N-M)]；
If channel does not keep idle in Defer Period, keep the N constant, restarting Defer Period.
5. according to the method for claim 3, it is characterised in that it is described in the unauthorized frequency range according to current data
Type carries out Conflict solving using the conflict avoidance parameter, in addition to：
After sending data in the unauthorized frequency range, if detecting channel confliction, stop sending data immediately；
Current CW values are updated according to CW increasing degrees value, randomly selecting one between the CW values behind 1 and renewal keeps out of the way several N,
Proceed by and keep out of the way.
6. according to the method for claim 5, it is characterised in that if described detect channel confliction, stop sending immediately
Data, including：
When the ACK number of hybrid automatic repeat-request HARQ responses for not receiving UE exceedes specified threshold, and Channel holding time
When reaching specified time threshold value, stop sending data immediately.
7. method according to claim 1 or 2, it is characterised in that described that the conflict avoidance parameter is sent to user
Equipment UE, including：
The conflict avoidance parameter of different types of data is sent to by UE by radio resource control RRC message；Or
The conflict avoidance parameter of current data is sent to by UE by RRC information.
8. according to the method for claim 7, it is characterised in that it is described by radio resource control RRC message by different numbers
After being sent to UE according to the conflict avoidance parameter of type, methods described also includes：
Referred to by the Downlink Control Information DCI of physical downlink control channel PDCCH or enhancing Physical Downlink Control Channel EPDCCH
Show that UE carries out Conflict solving using the conflict avoidance parameter of current data type.
9. according to the method for claim 1, it is characterised in that the LBT based on load that different types of data is set
The conflict avoidance parameter value of mechanism, including：
The maximum channel holding time of different types of data is set to increase with the increase for the CW for sending different types of data；
When the maximum channel holding time exceedes with the increase of the CW specifies Channel holding time, by the maximum letter
Road holding time is set as the specified Channel holding time.
10. a kind of method of conflict avoidance for unauthorized frequency range, for terminal device, it is characterised in that including：
The conflict avoidance parameter value for the LBT mechanism based on load that base station is sent is received, the terminal device is current scheduled
Terminal device；
In the unauthorized frequency range, Conflict solving, institute are carried out using the conflict avoidance parameter according to current data type
Conflict avoidance parameter is stated to correspond with the data type；
Wherein, the conflict avoidance parameter value include CW initial values, CW maximums, CW increasing degrees value, Defer Period, just
Time beginning CCA and extension CCA times；Different types of data, including reference signal, control signaling and business datum, the business
Data include the business datum of different service quality qos requirement.
11. according to the method for claim 10, it is characterised in that the LBT machines based on load for receiving base station and sending
The conflict avoidance parameter value of system, including：
The conflict avoidance parameter for the different types of data that base station is sent is received by RRC information；Or
The conflict avoidance parameter for the current data type that base station is sent is received by RRC information.
12. according to the method for claim 11, it is characterised in that the difference that base station transmission is received by RRC information
After the conflict avoidance parameter of data type, the conflict avoidance parameter using the reception carry out Conflict solving it
Before, methods described also includes：
The PDCCH or EPDCCH of base station transmission DCI are received, the DCI is used to indicate the punching using current data type
It is prominent to avoid parameter from carrying out Conflict solving.
13. according to the method for claim 10, it is characterised in that the current data type of the basis uses the conflict
Parameter is avoided to carry out Conflict solving, including：
Selection uses the conflict avoidance parameter of current data type；
When carrying out Conflict solving, when it is not idle to detect channel, randomly selects one into CW 1 and keep out of the way numerical value of N, open
Beginning is kept out of the way；
It is whether idle that channel is detected in each extension CCA times, channel for the free time, makes the N subtract 1 if detecting；
If it is not the free time to detect channel, start Defer Period, wherein, the Defer Period include M extension CCA
Time, M are more than or equal to 0；After the Defer Period terminate, continue to detect each extension CCA times, if detecting channel
For the free time, then the N is set to subtract 1；
When the N is kept to 0, start to send data in the unauthorized frequency range.
14. according to the method for claim 13, it is characterised in that after the Defer Period terminate, described
Before continuing the detection extension CCA times, methods described also includes：
If channel keeps idle in Defer Period, keep the N constant, or the N is reduced to max [0, (N-M)]；
If channel does not keep idle in Defer Period, keep the N constant, restarting Defer Period.
15. according to the method for claim 14, it is characterised in that the current data type of the basis uses the conflict
Parameter is avoided to carry out Conflict solving, in addition to：
After sending data in the unauthorized frequency range, if detecting channel confliction, stop sending data immediately；
Current CW values are updated according to CW increasing degrees value, randomly selecting one between the CW values behind 1 and renewal keeps out of the way several N,
Proceed by and keep out of the way.
A kind of 16. base station equipment, it is characterised in that including：
Processing unit, the conflict avoidance parameter value of the LBT mechanism based on load for setting different types of data；The conflict
Parameter value is avoided to include CW initial values, CW maximums, CW increasing degrees value, Defer Period, initial CCA times and extension
The CCA times；The different types of data, including reference signal, control signaling and business datum, wherein, the reference signal bag
Uplink reference signals and/or downlink reference signal are included, the control signaling includes upstream control signaling and/or descending control letter
Order, the business datum include the business datum of different service quality qos requirement, the conflict avoidance parameter value and the data
Type corresponds；
The processing unit is additionally operable to, in the unauthorized frequency range, according to current data type use with it is described current
The conflict avoidance parameter carries out Conflict solving corresponding to data type；
Transmitting element, for the conflict avoidance parameter to be sent into UE so that UE in the unauthorized frequency range according to transmission
Data type carry out Conflict solving, the terminal using the conflict avoidance parameter corresponding with the current data type
Equipment is currently scheduled terminal device.
17. equipment according to claim 16, it is characterised in that the processing unit is specifically used for：
Conflict when conflict avoidance parameter value when setting sends reference signal is less than or equal to send control signaling is kept away
Exempt from parameter value；Conflict avoidance parameter value when setting sends control signaling is less than or equal to send punching during business datum
It is prominent to avoid parameter value；
The conflict avoidance parameter value set when the higher business of delay requirement in qos requirement sends data is smaller.
18. equipment according to claim 16, it is characterised in that the processing unit is specifically used for：
Selection proceeds by Conflict solving using the conflict avoidance parameter corresponding to current data type；
When carrying out Conflict solving, when it is not idle to detect channel, randomly selects one into CW 1 and keep out of the way numerical value of N, open
Beginning is kept out of the way；
It is whether idle that channel is detected in each extension CCA times, channel for the free time, makes the N subtract 1 if detecting；
If it is not the free time to detect channel, start Defer Period, wherein, the Defer Period include M extension CCA
Time, M are more than or equal to 0；After the Defer Period terminate, continue to detect each extension CCA times, if detecting channel
For the free time, then the N is set to subtract 1；
When the N is kept to 0, start to send data in the unauthorized frequency range.
19. equipment according to claim 18, it is characterised in that the processing unit is additionally operable to：
If channel keeps idle in Defer Period, keep the N constant, or the N is reduced to max [0, (N-M)]；
If channel does not keep idle in Defer Period, keep the N constant, restarting Defer Period.
20. equipment according to claim 18, it is characterised in that the processing unit is additionally operable to：
After sending data in the unauthorized frequency range, if detecting channel confliction, stop sending data immediately；
Current CW values are updated according to CW increasing degrees value, randomly selecting one between the CW values behind 1 and renewal keeps out of the way several N,
Proceed by and keep out of the way.
21. equipment according to claim 20, it is characterised in that the processing unit is specifically used for：
When HARQACK number for not receiving UE exceedes specified threshold, and Channel holding time reaches specified time threshold value, stand
Stop sending data.
22. the equipment according to claim 16 or 17, it is characterised in that the transmitting element is specifically used for：
The conflict avoidance parameter of different types of data is sent to by UE by RRC information.
23. equipment according to claim 22, it is characterised in that the transmitting element is additionally operable to：
Indicate that UE carries out conflict solution using the conflict avoidance parameter of current data type by PDCCH or EPDCCH DCI
Certainly.
24. equipment according to claim 16, it is characterised in that the processing unit is specifically used for：
The maximum channel holding time of different types of data is set to increase with the CW of different types of data increase；
When the maximum channel holding time exceedes with the increase of the CW specifies Channel holding time, by the maximum letter
Road holding time is set as the specified Channel holding time.
A kind of 25. terminal device, it is characterised in that including：
Receiving unit, the conflict avoidance parameter value of the LBT mechanism based on load for receiving base station transmission, the terminal device
For currently scheduled terminal device；
Processing unit, for the conflict in unauthorized frequency range, received according to current data type using the receiving unit
Parameter is avoided to carry out Conflict solving, the conflict avoidance parameter corresponds with the data type；
Wherein, the conflict avoidance parameter value includes CW initial values, CW maximums, CW increasing degrees value, time delay Defer
Period, initial CCA times and extension CCA times；Different types of data, including reference signal, control signaling and business datum,
The business datum includes the business datum of different service quality qos requirement.
26. equipment according to claim 25, it is characterised in that the receiving unit is specifically used for：
The conflict avoidance parameter for the different types of data that base station is sent is received by RRC information.
27. equipment according to claim 26, it is characterised in that the receiving unit is additionally operable to：
The PDCCH or EPDCCH of base station transmission DCI are received, the DCI is used to indicate the punching using current data type
It is prominent to avoid parameter from carrying out Conflict solving.
28. equipment according to claim 25, it is characterised in that the processing unit is specifically used for：
Selection uses the conflict avoidance parameter of current data type；
When carrying out Conflict solving, when it is not idle to detect channel, randomly selects one into CW 1 and keep out of the way numerical value of N, open
Beginning is kept out of the way；
It is whether idle that channel is detected in each extension CCA times, channel for the free time, makes the N subtract 1 if detecting；
If it is not the free time to detect channel, start Defer Period, wherein, the Defer Period include M extension CCA
Time, M are more than or equal to 0；After the Defer Period terminate, continue to detect each extension CCA times, if detecting channel
For the free time, then the N is set to subtract 1；
When the N is kept to 0, start to send data in the unauthorized frequency range.
29. equipment according to claim 28, it is characterised in that the processing unit is additionally operable to：
If channel keeps idle in Defer Period, keep the N constant, or the N is reduced to max [0, (N-M)]；
If channel does not keep idle in Defer Period, keep the N constant, restarting Defer Period.
30. equipment according to claim 28, it is characterised in that the processing unit is additionally operable to：
After sending data in the unauthorized frequency range, if detecting channel confliction, stop sending data immediately；
Current CW values are updated according to CW increasing degrees value, randomly selecting one between the CW values behind 1 and renewal keeps out of the way several N,
Proceed by and keep out of the way.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510385991.4A CN105101446B (en) | 2015-06-30 | 2015-06-30 | A kind of method for collision avoidance and device for unauthorized frequency range |
| PCT/CN2015/091349 WO2017000411A1 (en) | 2015-06-30 | 2015-09-30 | Collision avoidance method and apparatus for use in unlicensed frequency band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510385991.4A CN105101446B (en) | 2015-06-30 | 2015-06-30 | A kind of method for collision avoidance and device for unauthorized frequency range |
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| Publication Number | Publication Date |
|---|---|
| CN105101446A CN105101446A (en) | 2015-11-25 |
| CN105101446B true CN105101446B (en) | 2017-12-15 |
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| CN201510385991.4A Active CN105101446B (en) | 2015-06-30 | 2015-06-30 | A kind of method for collision avoidance and device for unauthorized frequency range |
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| CN (1) | CN105101446B (en) |
| WO (1) | WO2017000411A1 (en) |
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| US20070214379A1 (en) * | 2006-03-03 | 2007-09-13 | Qualcomm Incorporated | Transmission control for wireless communication networks |
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| US8155102B1 (en) * | 2011-05-24 | 2012-04-10 | Renesas Mobile Corporation | Channel access control |
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| CN104717687B (en) * | 2015-04-09 | 2018-07-27 | 宇龙计算机通信科技(深圳)有限公司 | Method of adjustment, adjustment system and the equipment of channel occupancy probabilities |
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2015
- 2015-06-30 CN CN201510385991.4A patent/CN105101446B/en active Active
- 2015-09-30 WO PCT/CN2015/091349 patent/WO2017000411A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11991746B2 (en) | 2016-03-30 | 2024-05-21 | Wilus Institute Of Standards And Technology Inc. | Channel access method, device and system in unlicensed band |
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| CN105101446A (en) | 2015-11-25 |
| WO2017000411A1 (en) | 2017-01-05 |
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