CN105979546A - Channel detection method - Google Patents
Channel detection method Download PDFInfo
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- CN105979546A CN105979546A CN201610277459.5A CN201610277459A CN105979546A CN 105979546 A CN105979546 A CN 105979546A CN 201610277459 A CN201610277459 A CN 201610277459A CN 105979546 A CN105979546 A CN 105979546A
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- cca
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- 238000001514 detection method Methods 0.000 title claims abstract description 117
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 11
- 238000007689 inspection Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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
- H04W74/0833—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
- 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
- H04W74/0858—Random access procedures, e.g. with 4-step access with collision treatment collision detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a channel detection method which can improve the coexistence of LAA cells. According to one embodiment of the invention, the channel detection method includes the following steps: a base station detects whether data requiring to be transmitted exist, if data requiring to be transmitted exist, the base station determines a target CCA detection period; and when detecting that a channel is idle, the base station carries out data transmission based on the channel, if the channel is not idle, the base station negotiates with network equipment on occupation, and the priority of services to which the data to be transmitted is compared with the priority of services to which data are being transmitted, if the priority of the services to which the data to be transmitted is higher than the priority of the services to which the data are being transmitted, the network equipment stops services, the base station is allowed to occupy the channel to carry out data transmission, and if the priority of the services to which the data are being transmitted is higher than the priority of the services to which the data to be transmitted, the base station is not allowed to occupy the channel to carry out data transmission.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of channel detection method.
Background technology
3GPP authorizes the quantity of frequency range constantly to reduce, and how to use unauthorized frequency range, becomes current 3GPP's
Discuss one of problem, concrete unauthorized frequency range such as 2.4GHz and 5GHz frequency range.
The existing access technology used in unauthorized frequency range, such as WiFi, has more weak anti-interference energy
Power.In order to avoid interference, WiFi system devises a lot of interference and avoids rule.
LTE, when using unauthorized frequency range, may producing interference with WiFi system, keeping away so needing
Exempt from the mechanism of interference, such as listem-before-talk (LBT, Listen Before Talk).
Owing to there being different operators to provide communication service simultaneously, if the CCA of the LBT between operator
The detection time cannot stagger, then both occur data simultaneously, thus can produce collision.
If but the CCA time of operator stagger, and be repeated cyclically appearance, then may be such that a certain
Operator's busy channel always, and other operators take less than channel always, have impact on the justice of communication
Property.
Summary of the invention
For drawbacks described above, embodiments provide the channel detection method of a kind of unauthorized frequency range,
For reducing detection collision, it is achieved the fair co-existence between the LAA community of different operators, reduce base station
Or the wait time delay of terminal, improve base station or the data transmission efficiency of terminal.
The invention provides a kind of channel detection method, it may include:
Base station has detected whether that data need transmission, if there being data to need transmission, the most described base station determines mesh
Mark CCA detects the period；
The CCA inspection that the described target CCA detection period is used by the targeted carrier that described base station is belonged to
Survey the period；
The operator that at least two is different uses different CCA to detect the period；
The channel that described base station detects unauthorized frequency range within the described target CCA detection period is the most idle,
When described channel idle being detected, described base station carries out data transmission based on described channel.
Providing a kind of CCA detection time period in the embodiment of the present invention belongs to dynamic LBT mechanism, base station
May determine that target CCA detects the period, and this target CCA detection mesh of being belonged to by described base station of period
The mark CCA that used of operator detects the period, and the different operator of at least two uses different CCA
The detection period, so, the network element device of operator can stagger from the detection time, thus reduces detection
Collision.
Accompanying drawing explanation
The channel detection method flow chart that Fig. 1 provides for the embodiment of the present invention；
The channel detection method flow chart that Fig. 2 provides for the embodiment of the present invention；
The CCA that Fig. 3 provides for the embodiment of the present invention detects time window schematic diagram；
The CCA detection period distribution schematic diagram that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
Embodiments provide a kind of channel detection method, refer to Fig. 1, concrete:
101, base station has detected whether that data need transmission；
In the present embodiment, the base station of operator belongs to access network elements, carries connection user side and core
The data transmitting effect of net, the data between user side and core net have to pass through base station and could transmit, therefore
Whether base station can detect has data to need transmission.
102, base station determines that target CCA detects the period；
When base station has detected that data need transmission, it may be determined that the target CCA detection period.
It should be noted that the target fortune that the target CCA detection period in the present embodiment is belonged to by base station
The CCA that battalion business is used detects the period.
The operator that at least two is different uses different CCA to detect the period.
103, base station channel of detection unauthorized frequency range within the target CCA detection period is the most idle, if so,
Then perform step 104, if it is not, then perform step 105；
After base station determines the target CCA detection period, can detect within this target CCA detection period
The channel of unauthorized frequency range is the most idle, if idle, then perform step 104, if the most idle, then performs step
Rapid 105.
104, base station channel based on this free time carries out data transmission.
If base station determines the channel idle of the unauthorized frequency range in this target CCA detection period, then can be with base
Channel in this free time carries out data transmission.
105, other operations are performed.
If the channel that base station determines the unauthorized frequency range in this target CCA detection period is the most idle, the most permissible
Perform other operation, such as continue the detection in next cycle, or wait further instruction etc., specifically this
Place does not limits.
Providing a kind of CCA detection time period in the embodiment of the present invention belongs to dynamic LBT mechanism, base station
May determine that target CCA detects the period, and this target CCA detection mesh of being belonged to by described base station of period
The mark CCA that used of operator detects the period, and the different operator of at least two uses different CCA
The detection period, so, the network element device of operator can stagger from the detection time, thus reduces detection
Collision.
For ease of understanding, with an idiographic flow, the embodiment of the present invention is described in detail below, refers to
Fig. 2, concrete:
201, base station has detected whether that data need transmission；
In the present embodiment, the base station of operator belongs to access network elements, carries connection user side and core
The data transmitting effect of net, the data between user side and core net have to pass through base station and could transmit, therefore
Whether base station can detect has data to need transmission.
202, base station determines that target CCA detects the period；
When base station has detected that data need transmission, it may be determined that the target CCA detection period.
It should be noted that base station can obtain target CCA from CCA detection time window in the present embodiment
The detection period, this target CCA detection period is contained in CCA detection time window.
CCA detection time window specifically includes in the CCA detection cycle of the frame structure of FBE, and CCA detects
Cycle further includes CCA and detects time window, includes Y CCA in CCA detection time window
The detection period, in a CCA detection cycle, an operator only uses in CCA detection time window
CCA detection period carry out Channel Detection, and guarantee in a CCA detects time window at least
Two different operators use different CCA to detect the period, and wherein, above-mentioned Y is more than or equal to 2
Positive integer.
The CCA that this target CCA detection period is used by the targeted carrier that base station is belonged to detects the period.
The operator that at least two is different uses different CCA to detect the period, and this concrete at least two is not
Different CCA in this Y CCA detection period is used to detect the period with operator.
In the present embodiment, targeted carrier uses different mesh in continuous X CCA detection time window
Mark CCA detects the period, and this X is less than or equal to Y.
203, base station channel of detection unauthorized frequency range within the target CCA detection period is the most idle, if so,
Then perform step 204, if it is not, then perform step 205；
After base station determines the target CCA detection period, can detect within this target CCA detection period
The channel of unauthorized frequency range is the most idle, if idle, then perform step 204, if the most idle, then performs step
Rapid 205.
It is understood that in a CCA detection cycle, including CCA detection window and channel
Holding time and idle (idle) time.Therefore, when also having channel occupancy after CCA detection window
Between and idle (idle) time.
It should be noted that if operator uses second CCA to detect the period, then if inspection
Measure channel idle, can start to transmit data from the 3rd CCA detection period, start busy channel.
204, base station carries out data transmission based on idle channel.
Above-mentioned data are transmitted in a frame format, specifically include signaling or data payload.
205, base station sends detection bag on channel；
If base station determines that channel is the most idle, then can send detection bag on channel at this.
206, base station receives respond packet on channel；
Described respond packet is sent by the network equipment receiving detection bag, comprises described net in described respond packet
The mark of network equipment.
207, base station sends channel occupancy negotiation request according to the mark of the network equipment to the network equipment；
This takies consults to carry the first industry belonging to data to be transmitted that described base station needs to transmit in request
First precedence information of business.
208, the network equipment extracts described first precedence information from described taking negotiation request, and determines
The of second business belonging to positive transmission data of the described network equipment the most described current transmission
Two precedence informations；
209, the network equipment judges whether described first priority is higher than described second priority, if being higher than,
Then perform step 210, if not higher than, then perform step 212；
210, the network equipment stops described second business, and replys free time notice to described base station；
211, base station is according to described idle notice, is transmitted described data to be transmitted based on described channel.
212, the network equipment replys refusal notice.
It is understood that in the above-described embodiments, operator uses in CCA detection time window
The target CCA detection period can be pre-configured with by network management device, specific as follows:
(1) in channel idle assessment CCA detection time window, configure N number of CCA and detect the period；
Wherein, above-mentioned N is the positive integer more than or equal to 2.
(2) in above-mentioned N number of CCA detection period, for the CCA that at least two different operators is differently configured
The detection period.
For example, as it is shown on figure 3, the CCA that Fig. 3 provides for the embodiment of the present invention detects time window
Schematic diagram；In figure 3, as a example by 5 CCA detection cycles, respectively A1, A2, A3, A4 and
A5, each CCA detection cycle includes that CCA detects time window, therefore, 5 CCA detection weeks
Phase one has 5 CCA and detects time window, respectively B1, B2, B3, B4 and B5, and each CCA examines
Include in surveying time window that 5 CCA detect the period, be respectively 1,2,3,4 and according to its sequence of positions
5.Need now to detect time window for operator 1, operator 2 and operator 3 at continuous 3 CCA
The middle distribution target CCA detection period, wherein, the CCA detection period of operator 1 detects the time at CCA
The sequence of positions of window 1, CCA detection time window 2 and CCA detection time window 3 is 1,2 and 3,
Suitable in the position of CCA detection time window 4, CCA detection time window 5 and CCA detection time window 6
Sequence recalculates, and respectively 1,2 and 3, the like；Equally, the CCA of operator 2 detects the period
Suitable in the position of CCA detection time window 1, CCA detection time window 2 and CCA detection time window 3
Sequence is 2,3 and 1, when CCA detects time window 4, CCA detection time window 5 and CCA detection
Between the sequence of positions of window 6 recalculate, respectively 2,3 and 1, the like；The CCA of operator 3
The detection period detects time window 1 at CCA, CCA detection time window 2 and CCA detects time window 3
Sequence of positions be 3,1 and 2, detect time window 4, CCA at CCA and detect time window 5 and CCA
The sequence of positions of detection time window 6 recalculates, and respectively 3,1 and 2, the like.
Wherein, the CCA of operator 1, operator 2 and the operator 3 after configuration detects period such as Fig. 4 institute
Showing, wherein, the sequencing of the CCA detection period of each operator, in change, does not results in certain
The CCA detection period of operator, always front, and detects channel idle always, can busy channel always,
And the CCA detection period of other operator is the most rearward, can't detect channel idle always, can not always
The situation of busy channel occurs.
It should be noted that except above-mentioned configuration strategy, the present invention can also use other configuration strategy to enter
Row configuration, no matter which kind of configuration is tactful, as long as realizing the technique effect of the present invention, broadly falls into the present invention's
Protection domain.
Also, it should be noted relate to relevant information at above-mentioned configuration strategy, including CCA detection the cycle,
CCA detection time window in this CCA detection cycle, each CCA detection time window include
When CCA detection period and target CCA in CCA detection time window for operator's distribution detect
Section, these information can be referred to as Channel Detection configuration information.Wherein it is possible to by Channel Detection configuration letter
Cease and be embedded in base station ic with one configuration strategy or protocol mode, and then base station is detecting data
When needing transmission, then can complete letter according to the target CCA detection period of configuration in above-mentioned configuration strategy
Road detects, and when monitoring channel idle, carries out data transmission based on the channel detected.
It is, of course, also possible to the Channel Detection being embedded in base station ic with configuration strategy or protocol mode
Configuration information carries out rewriting operation, such as, along with the increase of operator, need again to configure for operator
When CCA detects the period, then can carry out rewriting operation.
Due to above-mentioned, Channel Detection configuration information is embedded in base station ic with configuration strategy or protocol mode
In, therefore, base station can send configuration information to the terminal in its coverage, in order to terminal is being entered
During the transmission of row data, target CCA the configured detection period is used to carry out Channel Detection.
Claims (9)
1. a channel detection method, it is characterised in that including:
Base station has detected whether that data need transmission, if there being data to need transmission, the most described base station determines mesh
Mark CCA detects the period；
The CCA inspection that the described target CCA detection period is used by the targeted carrier that described base station is belonged to
Survey the period；
The operator that at least two is different uses different CCA to detect the period；
The channel that described base station detects unauthorized frequency range within the described target CCA detection period is the most idle,
When described channel idle being detected, described base station carries out data transmission based on described channel.
Method the most according to claim 1, it is characterised in that described base station determines that target CCA is examined
The survey period includes:
Described base station obtains the target CCA detection period from CCA detection time window, and described target CCA is examined
The survey period is contained in CCA detection time window.
Method the most according to claim 2, it is characterised in that described CCA detection time window is extremely
Including that Y CCA detects the period less, described Y is the positive integer more than or equal to 2.
Method the most according to claim 3, it is characterised in that the operation that described at least two is different
Business use the different CCA detection period particularly as follows:
Described at least two different operators uses CCA detections different in described Y the CCA detection period
Period.
Method the most according to claim 4, it is characterised in that described targeted carrier is at continuous X
Individual described CCA detection time window uses the different target CCA detection period, described X less than or etc.
In described Y.
Method the most according to claim 5, it is characterised in that described method also includes:
Network management device configures Y CCA in described CCA detection time window and detects the period；
Described network management device is in described Y the CCA detection period, at least two different operators
Differently configured CCA detects the period.
Method the most according to claim 6, it is characterised in that described method also includes:
If described channel busy detected, described base station performs other operations.
Method the most according to claim 7, it is characterised in that described base station performs other operation bags
Include:
It is the most idle that described channel is detected after waiting during cycle again in base station.
Method the most according to claim 7, it is characterised in that described base station performs other operation bags
Include:
Described base station sends detection bag on that channel；
Described base station receives respond packet on that channel, and described respond packet is by receiving described detection bag
The network equipment sends, and comprises the mark of the described network equipment in described respond packet；
Described base station sends channel occupancy according to the mark of the described network equipment to the described network equipment and consults to ask
Ask, carry in described request that described base station needs first business belonging to data to be transmitted of transmission the
One precedence information；
The described network equipment extracts described first precedence information from described taking negotiation request, and determines
The of second business belonging to positive transmission data of the described network equipment the most described current transmission
Two precedence informations；
The described network equipment judges whether described first priority is higher than described second priority, if being higher than,
The most described network equipment stops described second business, and replys free time notice to described base station；
Described data to be transmitted, according to described idle notice, is transmitted by described base station based on described channel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610277459.5A CN105979546A (en) | 2016-04-28 | 2016-04-28 | Channel detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610277459.5A CN105979546A (en) | 2016-04-28 | 2016-04-28 | Channel detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109587703A (en) * | 2017-09-28 | 2019-04-05 | 阿里巴巴集团控股有限公司 | Channel optimization method and device |
| CN113412638A (en) * | 2020-01-17 | 2021-09-17 | 北京小米移动软件有限公司 | Data transmission method, device, communication equipment and storage medium |
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|---|---|---|---|---|
| CN1553715A (en) * | 2003-05-27 | 2004-12-08 | 中国科学技术大学 | Channel inserting method in spread spectrum grouped network based on multipacket receive |
| CN104717686A (en) * | 2015-03-31 | 2015-06-17 | 深圳酷派技术有限公司 | Channel detection method of unauthorized frequency band and network cell equipment |
| CN105516993A (en) * | 2014-09-24 | 2016-04-20 | 中国联合网络通信集团有限公司 | Spectrum resource distribution method and apparatus in cognitive network |
-
2016
- 2016-04-28 CN CN201610277459.5A patent/CN105979546A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553715A (en) * | 2003-05-27 | 2004-12-08 | 中国科学技术大学 | Channel inserting method in spread spectrum grouped network based on multipacket receive |
| CN105516993A (en) * | 2014-09-24 | 2016-04-20 | 中国联合网络通信集团有限公司 | Spectrum resource distribution method and apparatus in cognitive network |
| CN104717686A (en) * | 2015-03-31 | 2015-06-17 | 深圳酷派技术有限公司 | Channel detection method of unauthorized frequency band and network cell equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109587703A (en) * | 2017-09-28 | 2019-04-05 | 阿里巴巴集团控股有限公司 | Channel optimization method and device |
| CN113412638A (en) * | 2020-01-17 | 2021-09-17 | 北京小米移动软件有限公司 | Data transmission method, device, communication equipment and storage medium |
| CN113412638B (en) * | 2020-01-17 | 2023-10-03 | 北京小米移动软件有限公司 | Data transmission method, device, communication equipment and storage medium |
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