WO2017118053A1 - 一种信道占用的判决方法及判决装置 - Google Patents

一种信道占用的判决方法及判决装置 Download PDF

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Publication number
WO2017118053A1
WO2017118053A1 PCT/CN2016/097088 CN2016097088W WO2017118053A1 WO 2017118053 A1 WO2017118053 A1 WO 2017118053A1 CN 2016097088 W CN2016097088 W CN 2016097088W WO 2017118053 A1 WO2017118053 A1 WO 2017118053A1
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Prior art keywords
small cell
small
small cells
cell
priority
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PCT/CN2016/097088
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English (en)
French (fr)
Inventor
李明菊
朱亚军
张云飞
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宇龙计算机通信科技(深圳)有限公司
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Priority to US16/068,128 priority Critical patent/US10485006B2/en
Publication of WO2017118053A1 publication Critical patent/WO2017118053A1/zh

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • 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
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • 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
    • 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
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • 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
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel occupancy decision method and a decision device. Background technique
  • LAA Assisted Access
  • Wi-Fi Wireless-Fidelity
  • LBT Listen-before-talk
  • LBT includes Load Based Equipment (LBE) and Frame Based Equipment (FBE;).
  • FBE Frame Based Equipment
  • LAA ⁇ 1 performs Clear Channel Assessment (CCA) detection on a specific subframe. If the CCA test results in a channel idle, data transmission begins immediately. The channel will always be occupied until the maximum channel occupancy time or the data buffer is empty. Due to the trend of densely deploying LAA in 5G in the LAA and Wi-Fi coexistence scenarios, all LAAs under the same operator adopt FBE-based channel detection scheme, and periodically perform CCA detection and transmission before transmitting data.
  • CCA Clear Channel Assessment
  • the technical problem to be solved by the embodiments of the present invention is to provide a method for determining channel occupancy and a decision device.
  • the technical problem to be solved by the embodiments of the present invention is to provide a method for determining channel occupancy and a decision device.
  • the embodiment of the present invention provides a method for determining a channel occupancy, which includes: performing clustering according to geographical location information of each small cell in the same frequency band, where each small cell operates in a small licensed spectrum.
  • the cell or the small cells are all authorized to access the LAA cell in the unlicensed spectrum; if the small cells are small cells working in the licensed spectrum, the small cells in the cluster are divided into the first set.
  • the LAA cell with the detected channel idle is divided into the first set;
  • the interference value between each two small cells in a set is compared with a preset interference threshold, and the small cell combination whose interference value is greater than the preset interference threshold is divided into the second set, otherwise divided into the third set; Determining priority information reported by each small cell in the second set, and according to priority information and geographic location information of each small cell Dividing the small cells in the second set into an active set and a suppression set; transmitting transmission control signaling to the small cells in the third set, the active set, and the suppression set to cause the third set and the small cell in the active set After receiving the transmission control signaling, the data transmission is started, and the small cell in the suppression set enters the non-transmission state during the channel occupation period after receiving the transmission control signaling.
  • the priority information is determined by the small cell according to a scheduling level factor of the terminal that is scheduled by the small cell, where the scheduling level factor is used to represent the priority order that the terminal is scheduled, and when there are multiple terminals, the scheduling level factor is selected.
  • the maximum value is taken as the priority of the small cell.
  • p k is the priority of the kth small cell in the first set in the same cluster
  • ⁇ ⁇ is the upper limit of the proportion of the data packet beyond the maximum delay that can be tolerated by the scheduled terminal i
  • Ri t is scheduled
  • the maximum data rate of the terminal i at the current t time is the average data rate of the scheduled terminal i
  • Di(t) is the queue delay of the data buffer to be sent by the scheduled terminal i
  • ⁇ is the maximum that the scheduled terminal i can tolerate.
  • the delay, ( ⁇ is the service demand quantity level identifier corresponding to the data service to be sent by the scheduled terminal i.
  • the dividing the small cells in the second set into an active set and a suppression set according to the priority information and the geographic location information of each small cell including: initializing an active set and a suppression set; Selecting the small cell m with the highest current priority in the second set as a starting point, adding it to the active set, and calculating the interference between each small cell and the small cell m in the second set after the small cell m is removed this time.
  • the transmission control signaling is transmitted through an authorized frequency band or through an interface between the base stations.
  • the embodiment of the present invention further provides a channel occupancy determining apparatus, including: a clustering unit, configured to perform clustering according to geographical location information of each small cell in the same frequency band, where each small cell operates The small cell of the licensed spectrum or the small cells are all authorized to access the LAA cell in the unlicensed spectrum; the first dividing unit is configured, if the small cells are all small cells working in the licensed spectrum, The small cells in the cluster are divided into the first set. If the small cells are all small cells working in the unlicensed spectrum, the LAA cell in the cluster periodically synchronizes the channel idle assessment, and then detects the LAA with the channel idle.
  • the cell is divided into the first set; the calculating unit is configured to calculate the interference value between each two small cells in the first set and compare with the preset interference threshold, and compare the small cell with the interference value greater than the preset interference threshold Combining into a second set, otherwise dividing into a third set; a second dividing unit, configured to receive each small in the second set
  • the priority information reported by the area, and according to the priority information and the geographical location information of each small cell, the small cells in the second set are divided into an active set and a suppression set; and the sending unit is configured to send the transmission control signaling to the
  • the third set, the active set, and the small cell in the suppression set are such that the small cell in the third set and the active set starts data transmission after receiving the transmission control signaling, and the small cell in the suppression set receives the transmission control message. After the channel is occupied, it enters the non-transmission state.
  • the priority information is determined by the small cell according to a scheduling level factor of the terminal that is scheduled by the small cell, where the scheduling level factor is used to represent the priority order that the terminal is scheduled, and when there are multiple terminals, the scheduling level factor is selected.
  • the maximum value is taken as the priority of the small cell.
  • p k is the priority of the kth small cell in the first set in the same cluster
  • ⁇ ⁇ is the upper limit of the proportion of the data packet beyond the maximum delay that can be tolerated by the scheduled terminal i
  • Ri t is scheduled
  • the maximum data rate of terminal i at the current t time, R ⁇ t) is the average data rate of the scheduled terminal i
  • Di(t) is the scheduled end.
  • the queue delay of the data buffer to be sent is ⁇ , which is the maximum delay that the scheduled terminal i can tolerate.
  • ⁇ is the service demand level identifier corresponding to the data service to be sent by the scheduled terminal i.
  • the second dividing unit is specifically configured to: initialize an active set and a suppression set; select a small cell m with the highest current priority in the second set as a starting point, add the active cell to the active set, and calculate the small cell to be removed.
  • the interference value between each small cell and the small cell m in the second set after the m is compared with the preset interference threshold, and the small cell whose interference value is greater than the preset interference threshold is added to the suppression set.
  • removing, in the second set, the small cell included in the union of the current active set and the suppression set updating the starting point, and repeatedly performing the step of selecting the small cell to join the active set and the suppression set until the second set is an empty set.
  • the transmission control signaling is transmitted through an authorized frequency band or through an interface between the base stations.
  • Embodiments of the present invention have the following beneficial effects:
  • FIG. 1 is a schematic flow chart of a first embodiment of a method for determining channel occupancy according to the present invention
  • FIG. 2 is a schematic flow chart of a second embodiment of a method for determining channel occupancy according to the present invention
  • FIG. 3 is a schematic diagram of the composition of a channel occupying apparatus according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a terminal including a channel occupancy determining apparatus according to an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic flowchart of a first embodiment of a method for determining a channel occupation according to the present invention.
  • the method includes the following steps:
  • Each of the small cells is a small cell working in an authorized spectrum or each of the small cells is an authorized auxiliary access LAA cell working in an unlicensed spectrum.
  • the decision function entity can read the status location information of each small cell, such as coordinate information, and mark the adjacent Small Cells as the same cluster, and the small cells in the cluster share information, which is uniformly controlled by the decision function entity. Realize dynamic allocation and intelligent management of resources, and carry control signaling.
  • the decision function entity interacts with the information of the small cell in the cluster to occupy the licensed frequency band resource, which can periodically update the information of all the small cells in the cluster, and has the function of software programming to implement various algorithms.
  • the small cells are all small cells working in the licensed spectrum, divide the small cells in the cluster into the first set. If the small cells are all LAA cells working in the unlicensed spectrum, After the intra-cluster LAA cell periodically performs channel idle evaluation, the LAA cell that detects the channel idle is divided into the first set.
  • the licensed spectrum is authorized, that is, the other licensed systems do not use other systems such as Wi-Fi, and all the small cell base station transmission points in the licensed frequency band do not need to perform any channel detection before occupying the channel, and directly occupy the spectrum.
  • the channel can be considered.
  • all the small cells in the cluster can be divided into the first set.
  • For a LAA cell operating in an unlicensed spectrum only the LAA cells that detect the channel idle are divided into the first set.
  • LAA small cells deployed by the same carrier in the cluster will periodically perform channel CCA detection, and CCA detection can achieve initial screening of LAA small cells, and select a successful CAA small cell from CCA. Subsequent further screening is performed to finally obtain a LAA small cell set that can preferentially satisfy the transmission requirement, preferably use resources, and a LAA small cell set that can temporarily ignore the transmission requirement and temporarily not occupy resources.
  • 5103 Calculate an interference value between every two small cells in the first set and compare with a preset interference threshold, and divide a small cell combination whose interference value is greater than the preset interference threshold into a second set, otherwise divide to The third set.
  • the preset interference threshold may be set by the decision function entity according to the historical data, or may be set by the manual according to the experience, which is not limited in the embodiment of the present invention.
  • the small cells in the first set may be further filtered by the interference threshold, and the small cells with large mutual interference may be combined into a pair to be divided into the second set.
  • S104 Receive priority information reported by each small cell in the second set, and divide the small cells in the second set into an active set and a suppression set according to priority information and geographic location information of each small cell.
  • the small cell in the second set may actively perform its own priority calculation and report the obtained priority information to the decision function entity, or may also be indicated by the decision function entity in the second set.
  • the small cell performs the steps of priority and reporting.
  • the priority information may be determined by a small cell according to a scheduling level factor of a terminal whose service and the active data buffer is not empty, where the scheduling level factor is used to represent a priority order of the terminal scheduling, when multiple terminals exist.
  • the maximum value of the scheduling level factor is selected as the priority of the small cell.
  • p k is the priority of the kth small cell in the first set in the same cluster
  • ⁇ ⁇ is the upper limit of the proportion of the data packet beyond the maximum delay that can be tolerated by the scheduled terminal i
  • Ri t is scheduled
  • the maximum data rate of the terminal i at the current t time is the average data rate of the scheduled terminal i
  • Di(t) is the queue delay of the data buffer to be sent by the scheduled terminal i
  • ⁇ is the maximum that the scheduled terminal i can tolerate.
  • the delay, ( ⁇ is the service demand quantity level identifier corresponding to the data service to be sent by the scheduled terminal i.
  • the active cell and the suppression set of the small cell may be divided by using a dichotomy or other classification manner, where the demand of the small cell in the active set is preferentially satisfied, and the small cell in the set is suppressed.
  • the demand can be temporarily ignored, indicating that it is not sent for a certain period of time.
  • S105 Send transmission control signaling to the small cells in the third set, the active set, and the suppression set, so that the small cells in the third set and the active set start data transmission after receiving the transmission control signaling, and suppress the set.
  • the small cell enters a non-transmission state during the channel occupation period after receiving the transmission control signaling.
  • the request conflict of the small cells in different sets may be processed, and the transmission control signaling is sent to the third set, the activity. Aggregating and suppressing small cells in the set such that the small cells in the third set and the active set start data transmission after receiving the transmission control signaling, and suppress the small cells in the set from receiving After the transmission control signaling, the non-transmission state is entered during the channel occupation period.
  • the transmission control signaling is transmitted through an authorized frequency band or through an interface between the base stations. More security and stability.
  • the clustering, the CCA detection, the preset interference threshold comparison, and the multi-level selection of the small cell according to the priority information and the geographical location information by suppressing a part of the interference to the neighboring cell
  • the small cell transmits data, reduces inter-cell system interference, improves overall system performance, and enables better coexistence between the small cell system and the LAA system and the Wi-Fi system.
  • FIG. 2 it is a schematic flowchart of a second embodiment of a method for processing a conflict according to the present invention.
  • the method includes the following steps:
  • Each of the small cells is a small cell working in an authorized spectrum or each of the small cells is an authorized auxiliary access LAA cell working in an unlicensed spectrum.
  • the decision function entity can read the status location information of each small cell, such as coordinate information, and mark the adjacent Small Cells as the same cluster, and the small cells in the cluster share information, which is uniformly controlled by the decision function entity. Realize dynamic allocation and intelligent management of resources, and carry control signaling.
  • the decision function entity interacts with the information of the small cell in the cluster to occupy the licensed frequency band resource, which can periodically update the information of all the small cells in the cluster, and has the function of software programming to implement various algorithms.
  • the small cells are all small cells working in the licensed spectrum, divide the small cells in the cluster into the first set. If the small cells are all LAA cells working in the unlicensed spectrum, After the intra-cluster LAA cell periodically performs channel idle evaluation, the LAA cell that detects the channel idle is divided into the first set.
  • all LAA small cells deployed by the same carrier in the cluster will perform channel CCA detection periodically, and the CCA detection can achieve initial screening of the LAA small cell, and the CCA successfully selected LAA is small.
  • the cell performs subsequent further screening, and finally obtains a LAA small cell set that can preferentially satisfy the transmission requirement, preferably uses resources, and a LAA small cell set that can temporarily ignore the transmission requirement and temporarily does not occupy resources.
  • S203 Calculate the interference value between each two small cells in the first set and compare with a preset interference threshold, and divide the small cell combination whose interference value is greater than the preset interference threshold into the second set, otherwise divide to The third set.
  • the preset interference threshold may be set by the decision function entity according to historical data, or It is not limited by the embodiment of the present invention.
  • the small cells in the first set may be further filtered by the interference threshold, and the small cells with large mutual interference may be combined into a pair to be divided into the second set.
  • S204 Receive priority information reported by each small cell in the second set.
  • the small cell in the second set may actively perform its own priority calculation and report the obtained priority information to the decision function entity, or may also be indicated by the decision function entity in the second set.
  • the small cell performs the steps of priority and reporting.
  • the priority information may be determined by a small cell according to a scheduling level factor of a terminal whose service and the active data buffer is not empty, where the scheduling level factor is used to represent a priority order of the terminal scheduling, when multiple terminals exist.
  • the maximum value of the scheduling level factor is selected as the priority of the small cell.
  • p k is the priority of the kth small cell in the first set in the same cluster
  • ⁇ ⁇ is the upper limit of the proportion of the data packet beyond the maximum delay that can be tolerated by the scheduled terminal i
  • Ri t is scheduled
  • the maximum data rate of the terminal i at the current t time is the average data rate of the scheduled terminal i
  • Di(t) is the queue delay of the data buffer to be sent by the scheduled terminal i
  • ⁇ is the maximum that the scheduled terminal i can tolerate.
  • the delay, ( ⁇ is the service demand quantity level identifier corresponding to the data service to be sent by the scheduled terminal i.
  • the dichotomy can be used to divide the active set and the suppression set of the small cell, wherein the demand of the small cell in the active set is preferentially satisfied, and the requirement of suppressing the small cell in the set can be Ignore it temporarily, indicating that it is not transmitting for a certain period of time.
  • S206 Select a small cell m with the highest current priority in the second set as a starting point, and add it to the active set, and calculate between each small cell and the small cell m in the second set after the small cell m is removed. Comparing the interference value with the preset interference threshold, adding a small cell whose interference value is greater than the preset interference threshold to the suppression set, and removing the current active set and the suppression set in the second set The small cell included in the set.
  • S208 Send transmission control signaling to the small cells in the third set, the active set, and the suppression set, so that the small cells in the third set and the active set start data transmission after receiving the transmission control signaling, and suppress the set.
  • the small cell enters a non-transmission state during the channel occupation period after receiving the transmission control signaling.
  • the request conflict of the small cells in different sets may be processed, and the transmission control signaling is sent to the third set, the activity.
  • the small cells in the set and the suppression set are such that the small cells in the third set and the active set start data transmission after receiving the transmission control signaling, and suppress the small cells in the set to receive the transmission control signaling in the channel occupation period. Enter the non-send status.
  • the service condition of the end user and the demand difference of resources of different services are comprehensively allocated, so that resources can be allocated more reasonably and QoS is improved; and management is performed based on the virtualized network architecture.
  • Control more flexible, can reduce the computational burden and signaling interaction at the small base station level, and efficiently achieve data analysis and better decision-making through algorithms.
  • the determining device includes:
  • the clustering unit 100 is configured to perform clustering according to geographical location information of each small cell in the same frequency band.
  • the small cells are all small cells operating in the licensed spectrum or the small cells are all authorized to access the LAA cell working in the unlicensed spectrum;
  • the determining device may read the status location information of each small cell, such as coordinate information, and mark the adjacent Small Cell as the same cluster, and the small cells in the cluster share information, which are uniformly controlled by the determining device. Realize dynamic allocation and intelligent management of resources, and carry control signaling.
  • the decision device interacts with the information of the small cell in the cluster to occupy the licensed frequency band resource, which can periodically update the information of all the small cells in the cluster, and has the function of software programming to implement various algorithms.
  • the decision device can be integrated in a Software Defined Network (SDN) or set independently.
  • SDN Software Defined Network
  • the first dividing unit 200 is configured to divide the small cells in the cluster into the first set if the small cells are all small cells working in the licensed spectrum, if the small cells are all working in the unlicensed spectrum
  • the LAA cell will be detected after the intra-cluster LAA cell periodically synchronizes the channel idle assessment.
  • the LAA cell with the channel idle is divided into the first set;
  • all LAA small cells deployed by the same carrier in the cluster will perform channel CCA detection periodically, and the CCA detection can achieve initial screening of the LAA small cell, and the CCA successfully selected LAA is small.
  • the cell performs subsequent further screening, and finally obtains a LAA small cell set that can preferentially satisfy the transmission requirement, preferably uses resources, and a LAA small cell set that can temporarily ignore the transmission requirement and temporarily does not occupy resources.
  • the calculating unit 300 is configured to calculate an interference value between each two small cells in the first set and compare with a preset interference threshold, and divide the small cell combination whose interference value is greater than the preset interference threshold into the second set. , otherwise divided into the third set;
  • the preset interference threshold may be set by the determining device according to the historical data, or may be set by an artificial person according to experience, which is not limited in the embodiment of the present invention.
  • the small cells in the first set may be further filtered by the interference threshold, and the small cells with large mutual interference may be combined into a pair to be divided into the second set.
  • the second dividing unit 400 is configured to receive the priority information reported by each small cell in the second set, and divide the small cell in the second set into activities according to the priority information and the geographic location information of each small cell. Collection and suppression collection;
  • the dichotomy may be used to divide the active set and the suppression set of the small cell, wherein the demand of the small cell in the active set is preferentially satisfied, and the small cell in the set is suppressed.
  • the demand can be temporarily ignored, indicating that it is not sent for a certain period of time.
  • the small cell in the second set may actively perform its own priority calculation and report the obtained priority information to the determining device, or may also indicate, by the determining device, the small cell in the second set to perform the priority. And the steps reported.
  • the priority information may be determined by a small cell according to a scheduling level factor of a terminal whose service and the active data buffer is not empty, where the scheduling level factor is used to represent a priority order of the terminal scheduling, when multiple terminals exist.
  • the maximum value of the scheduling level factor is selected as the priority of the small cell.
  • ⁇ is the scheduled end
  • Ri t is the maximum data rate of the scheduled terminal i at the current t time, which is the average data rate of the scheduled terminal i
  • Di(t) is scheduled
  • ⁇ is the maximum delay that the scheduled terminal i can tolerate
  • ( ⁇ is the service demand level identifier corresponding to the data service to be sent by the scheduled terminal i.
  • the sending unit 500 is configured to send the transmission control signaling to the small cells in the third set, the active set, and the suppression set, so that the small cells in the third set and the active set start data transmission after receiving the transmission control signaling.
  • the small cell in the suppression set enters a non-transmission state during a channel occupation period after receiving the transmission control signaling.
  • the request conflict of the small cells in different sets may be processed, and the transmission control signaling is sent to the third set, the activity.
  • the small cells in the set and the suppression set are such that the small cells in the third set and the active set start data transmission after receiving the transmission control signaling, and suppress the small cells in the set to receive the transmission control signaling in the channel occupation period.
  • the transmission control signaling is transmitted through the licensed frequency band or through an interface between the base stations.
  • the second dividing unit 400 is specifically configured to:
  • the starting point is updated, and the step of selecting the small cell to join the active set and the suppressing set is repeatedly performed until the second set is an empty set.
  • the above-mentioned clustering unit 100, the first dividing unit 200, the calculating unit 300, the second dividing unit 400, and the transmitting unit 500 may exist independently or may be integrally arranged, and the clustering unit 100, the first dividing unit 200, the calculating unit 300, and the The two dividing unit 400 and the transmitting unit 500 may be separately set in hardware form independently of the processor of the channel occupying decision device, and may be in the form of a microprocessor; or may be embedded in the processing of the determining device in hardware form.
  • the processor may also be stored in the memory of the decision device in software, so that the processor of the decision device invokes to execute the above clustering unit 100, the first dividing unit 200, the calculating unit 300, the second dividing unit 400, and transmitting The corresponding operation of unit 500.
  • the computing unit 300 may be a processor of the device, and the clustering unit 100, the first dividing unit 200, and the second dividing
  • the functions of the unit 400 and the transmitting unit 400 may be embedded in the processor, or may be separately set independently of the processor, or may be stored in the memory in the form of software, and the functions are called by the processor.
  • the embodiment of the invention does not impose any limitation.
  • the above processor may be a central processing unit (CPU), a microprocessor, a single chip microcomputer or the like.
  • the first dividing unit 100 and the second dividing unit 300 may be integrated or set independently, and the sending unit 500 may serve as an interface circuit of the device.
  • the present invention has the following advantages:
  • the terminal 600 in the embodiment of the present invention may be different types of electronic devices, such as: a smart phone, a tablet computer, a palmtop computer, and a mobile internet device, a personal digital assistant, a media player, a smart TV, a smart watch, a smart glasses, a smart hand. Ring and so on.
  • the decision device for channel occupancy in the above embodiment of the present invention is applied to the terminal 600.
  • the terminal 600 in the embodiment of the present invention includes: at least one processor 610, such as a CPU, at least one receiver 613, at least one memory 614, at least one transmitter 615, and at least one communication bus 612.
  • the communication bus 612 is used to implement connection communication between these components.
  • the receiver 613 and the transmitter 615 may be wired transmission ports, or may be wireless devices, for example, including antenna devices, for performing data communication with other devices.
  • the memory 614 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the processor 610 can execute the operating system of the terminal 600 and various installed applications, Program code or the like, for example, each unit described above includes the clustering unit 100, the calculation unit 300, and the like.
  • Program code is stored in the memory 614, and the processor 610 can call the program code stored in the memory 614 via the communication bus 612 to perform related functions.
  • the various units e.g., the clustering unit 100, the computing unit 300, etc.
  • FIG. 3 are program codes stored in the memory 614 and executed by the processor 610, thereby The functions of the various units are implemented to achieve a decision on channel occupancy.
  • the memory 614 stores a plurality of instructions that are executed by the processor 610 to implement a channel occupancy decision method. Specifically, performing, by the processor 610, the multiple instructions includes: performing clustering according to geographic location information of each small cell in the same frequency band, where each small cell is a small cell or a station that operates in a licensed spectrum.
  • Each small cell is an authorized auxiliary access LAA cell operating in an unlicensed spectrum; if each small cell is a small cell operating in an authorized spectrum, the small cells in the cluster are divided into the first set, if Each of the small cells is an LAA cell operating in an unlicensed spectrum, and after the intra-cluster LAA cell periodically performs channel idle evaluation, the LAA cell that detects the channel idle is divided into a first set; The interference value between each two small cells is compared with a preset interference threshold, and the small cell combination whose interference value is greater than the preset interference threshold is divided into the second set, otherwise divided into the third set; The priority information reported by each small cell in the set, and according to the priority information and the geographical location information of each small cell, the second set The cell is divided into an active set and a suppression set; transmitting transmission control signaling to the small cells in the third set, the active set, and the suppression set such that the small cells in the third set and the active set start after receiving the transmission control signaling Data transmission, the small cell in the suppression set enter
  • the priority information is determined by the small cell according to a scheduling level factor of the terminal that is scheduled by the small cell, where the scheduling level factor is used to represent the priority order that the terminal is scheduled, and when there are multiple terminals, the selection is performed.
  • the maximum value of the scheduling level factor is taken as the priority of the small cell.
  • the priority is calculated according to the following formula:
  • p k is the priority of the kth small cell in the first set in the same cluster
  • ⁇ ⁇ is the upper limit of the proportion of the data packet beyond the maximum delay that can be tolerated by the scheduled terminal i
  • Ri t is scheduled
  • the maximum data rate of terminal i at the current t time, R ⁇ t) is the average data rate of the scheduled terminal i
  • Di(t) is the scheduled end.
  • the queue delay of the data buffer to be sent is ⁇ , which is the maximum delay that the scheduled terminal i can tolerate.
  • ⁇ is the service demand level identifier corresponding to the data service to be sent by the scheduled terminal i.
  • the small cells in the second set are divided into an active set and a suppression set according to priority information and geographic location information of each small cell, and the processor 610 processes the multiple instructions. Execution further includes: initializing an active set and a suppression set; selecting a small cell m with the highest priority in the second set as a starting point, adding the active cell to the active set, and calculating the second set after removing the small cell m
  • the interference value between each small cell and the small cell m is compared with the preset interference threshold, and a small cell whose interference value is greater than the preset interference threshold is added to the suppression set, and in the second set
  • the small cell included in the union of the current active set and the suppression set is removed; the starting point is updated, and the step of selecting the small cell to join the active set and the suppression set is repeatedly performed until the second set is an empty set.
  • the transmission control signaling is transmitted over a licensed frequency band or through an interface between base stations.
  • the processor 610 may refer to the description of the related steps in the embodiment in FIG. 1 to FIG. 2, and details are not described herein.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例公开了一种信道占用的判决方法及装置，方法包括：根据小小区的地理位置和空闲信道检测结果筛选符合条件的小小区至第一集合；根据小小区间的干扰筛选符合条件的小小区划分至第二集合，否则划分到第三集合；根据小小区的优先级和地理位置将第二集合中的小小区分成活动集合和抑制集合；发送传输控制信令至第三集合、活动集合和抑制集合中的小小区以使得第三集合和活动集合中的小小区在接收到传输控制信令后开始数据传输，抑制集合中的小小区在接收到传输控制信令后在信道占用时期进入不发送状态。采用本发明，可提升小小区***内部以及LAA***和Wi-Fi***共存时，信道资源分配的合理性，提高***性能。

Description

一种信道占用的判决方法及判决装置
本申请要求于 2016年 1月 5日提交中国专利局，申请号为 201610010114.3、 发明名称为"一种信道占用的判决方法及判决装置"的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术领域， 尤其涉及一种信道占用的判决方法及判决装置。 背景技术
随着长期演进 （Long Term Evolution, LTE)技术的普及， 无线数据流量实现 井喷式增长， 蜂窝数据***对频谱资源的需求也不断加剧。 3GPP Release 13标 准中提出授权辅助接入 （License Assisted Access, LAA) 小小区 （Small Cell) 的概念， Small Cell不仅部署在现有的授权频谱中， 同时部署在非授权频谱中， 可充分利用频谱资源。 然而， 在非授权的 5GHz 频段中 LAA 和无线保真 (Wireless-Fidelity, Wi-Fi) 的共存问题成为了最大挑战。
为了避免碰撞冲突的产生，现有技术中将载波侦听 （Listen-before-talk， LBT) 运用到 LAA***。 LBT包括基于负载的设备 （Load Based Equipment, LBE)和 基于帧的设备 (Frame Based Equipment, FBE；)。 在 FBE机制下， LAA ^1在特定 子帧上进行空闲信道评估 （Clear channel assessment, CCA) 检测。 如果 CCA检 测结果为信道空闲， 则立即开始传输数据。 信道将一直被占用至最大信道占用 时长或数据緩存区为空。 由于在 LAA和 Wi-Fi共存场景下， 针对在 5G中密集 部署 LAA的趋势，同个运营商下的所有 LAA均采用基于 FBE的信道检测方案， 在发送数据前周期性同步进行 CCA检测和传输数据， 这样将导致出现多个相邻 LAA 同时传输数据从而引起冲突碰撞， 造成小区间干扰严重， ***性能恶化， 不易于与 Wi-Fi***和谐共存。 而对于授权频谱， 若在同一频段上部属了超密集 小小区， 同样在发送时若所有小区都同时发送， 也会由于相邻小区之间的干扰 严重而使得***性能恶化。 发明内容
本发明实施例所要解决的技术问题在于， 提供一种信道占用的判决方法及 判决装置。 以解决 LAA***和 Wi-Fi***共存时， 冲突碰撞较多导致小区间干 扰严重， ***性能恶化的问题。 同时解决授权频谱上部属超密集组网时， 由于 所有小小区同时发送， 使得干扰严重， 进一步使得***性能恶化的问题。
为了解决上述技术问题， 本发明实施例提供了一种信道占用的判决方法， 包括： 根据同一频段上各个小小区的地理位置信息进行分簇， 所述各个小小区 均为工作在授权频谱的小小区或所述各个小小区均为工作在非授权频谱的授权 辅助接入 LAA小区； 若所述各个小小区均为工作在授权频谱的小小区， 则将簇 内的小小区划分至第一集合， 若所述各个小小区均为工作在非授权频谱的小小 区， 则在簇内 LAA小区周期性同步进行信道空闲评估之后， 将检测信道空闲的 LAA小区划分至第一集合； 计算所述第一集合内每两个小小区之间的干扰值并 与预设干扰阈值比较， 将干扰值大于所述预设干扰阈值的小小区组合划分至第 二集合， 否则划分到第三集合； 接收所述第二集合中各个小小区上报的优先级 信息， 并根据各个小小区的优先级信息和地理位置信息， 将所述第二集合中的 小小区分成活动集合和抑制集合； 发送传输控制信令至所述第三集合、 活动集 合和抑制集合中的小小区以使得第三集合和活动集合中的小小区在接收到传输 控制信令后开始数据传输， 抑制集合中的小小区在接收到传输控制信令后在信 道占用时期进入不发送状态。
其中， 所述优先级信息由小小区根据被其调度的终端的调度等级因子确定， 所述调度等级因子用于表征终端被调度的优先顺序， 当存在多个终端时， 选择 其中调度等级因子的最大值作为该小小区的优先级。
其中， 所述优先级根据如下公式计算得到：
Figure imgf000004_0001
其中， pk为同个簇内第一集合中的第 k个小小区的优先级， δ Α为被调度终 端 i可容忍的超出最大时延的数据包的比例上限， Ri t)为被调度终端 i在当前 t 时刻的最大数据速率， 为被调度终端 i 的平均数据速率， Di(t)为被调度终 端 i待发数据緩存区的队列时延， η为被调度终端 i能容忍的最大时延， （^^为 被调度终端 i待发送数据业务对应的服务 ^量需求等级标识。
其中， 所述根据各个小小区的优先级信息和地理位置信息， 将所述第二集 合中的小小区分成活动集合和抑制集合， 包括： 初始化活动集合和抑制集合； 选择所述第二集合中当前优先级最高的小小区 m标记为起点， 将其加入活动集 合， 计算此次去除小小区 m之后的第二集合中每个小小区与小小区 m之间的干 扰值并与所述预设干扰阈值比较， 将干扰值大于所述预设干扰阈值的小小区加 入到所述抑制集合， 并在所述第二集合中去除当前活动集合和抑制集合的并集 所包含的小小区； 更新起点， 重复执行选择小小区加入活动集合和抑制集合的 步骤直至所述第二集合为空集。
其中， 所述传输控制信令通过授权频段传输或者通过基站之间的接口传输。 相应地， 本发明实施例还提供了一种信道占用的判决装置， 包括： 分簇单 元， 设置为根据同一频段上各个小小区的地理位置信息进行分簇， 所述各个小 小区均为工作在授权频谱的小小区或所述各个小小区均为工作在非授权频谱的 授权辅助接入 LAA小区； 第一划分单元， 设置为若所述各个小小区均为工作在 授权频谱的小小区， 则将簇内的小小区划分至第一集合， 若所述各个小小区均 为工作在非授权频谱的小小区， 则在簇内 LAA小区周期性同步进行信道空闲评 估之后， 将检测信道空闲的 LAA小区划分至第一集合； 计算单元， 设置为计算 所述第一集合内每两个小小区之间的干扰值并与预设干扰阈值比较， 将干扰值 大于所述预设干扰阈值的小小区组合划分至第二集合， 否则划分到第三集合； 第二划分单元， 设置为接收所述第二集合中各个小小区上报的优先级信息， 并 根据各个小小区的优先级信息和地理位置信息， 将所述第二集合中的小小区分 成活动集合和抑制集合； 发送单元，设置为发送传输控制信令至所述第三集合、 活动集合和抑制集合中的小小区以使得第三集合和活动集合中的小小区在接收 到传输控制信令后开始数据传输， 抑制集合中的小小区在接收到传输控制信令 后在信道占用时期进入不发送状态。
其中， 所述优先级信息由小小区根据被其调度的终端的调度等级因子确定， 所述调度等级因子用于表征终端被调度的优先顺序， 当存在多个终端时， 选择 其中调度等级因子的最大值作为该小小区的优先级。
其中， 所述优先级根据如下公式计算得到：
Pk = max{- lg(¾ -| -^- Q^}
其中， pk为同个簇内第一集合中的第 k个小小区的优先级， δ Α为被调度终 端 i可容忍的超出最大时延的数据包的比例上限， Ri t)为被调度终端 i在当前 t 时刻的最大数据速率， R^t)为被调度终端 i 的平均数据速率， Di(t)为被调度终 端 i待发数据緩存区的队列时延， η为被调度终端 i能容忍的最大时延， （^^为 被调度终端 i待发送数据业务对应的服务 ^量需求等级标识。
其中， 所述第二划分单元具体设置为： 初始化活动集合和抑制集合； 选择 所述第二集合中当前优先级最高的小小区 m标记为起点， 将其加入活动集合， 计算此次去除小小区 m之后的第二集合中每个小小区与小小区 m之间的干扰值 并与所述预设干扰阈值比较， 将干扰值大于所述预设干扰阈值的小小区加入到 所述抑制集合， 并在所述第二集合中去除当前活动集合和抑制集合的并集所包 含的小小区； 更新起点， 重复执行选择小小区加入活动集合和抑制集合的步骤 直至所述第二集合为空集。
其中， 所述传输控制信令通过授权频段传输或者通过基站之间的接口传输。 实施本发明实施例， 具有如下有益效果：
通过分簇、 CCA检测、 预设干扰阈值比对以及根据优先级信息和地理位置 信息对小小区进行了多层级的筛选， 通过抑制一部分对相邻小区造成干扰的小 小区发送数据， 减少小区间***干扰， 提高了***整体性能， 使得小小区内部 以及 LAA***和 Wi-Fi***之间更好共存。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述 中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付 出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1是本发明信道占用的判决方法的第一实施例的流程示意图；
图 2是本发明信道占用的判决方法的第二实施例的流程示意图；
图 3是本发明实施例信道占用的判决装置的组成示意图；
图 4是本发明实施例的包括信道占用的判决装置的终端的结构示意图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是 全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。 请参照图 1， 为本发明信道占用的判决方法的第一实施例的流程示意图， 在 本实施例中， 所述方法包括以下步骤：
5101 , 根据同一频段上各个小小区的地理位置信息进行分簇。
其中， 所述各个小小区均为工作在授权频谱的小小区或所述各个小小区均 为工作在非授权频谱的授权辅助接入 LAA小区。
具体地， 判决功能实体可以读取各个小小区的地位位置信息如坐标信息， 将相邻的 Small Cell标记为同一簇， 簇内小小区共享信息， 由判决功能实体统一 控制。 实现资源的动态分配和智能管理， 承载控制信令。 判决功能实体与簇内 小小区的信息交互占用授权频段资源， 其可以周期性更新簇内所有小小区的信 息， 并具有软件编程实现各种算法的功能。
5102, 若所述各个小小区均为工作在授权频谱的小小区， 则将簇内的小小 区划分至第一集合， 若所述各个小小区均为工作在非授权频谱的 LAA小区， 则 在簇内 LAA 小区周期性同步进行信道空闲评估之后， 将检测信道空闲的 LAA 小区划分至第一集合。
其中， 基于授权频谱是被授权的， 即该授权频段上不会有 Wi-Fi等其它*** 使用， 那么该授权频段上所有小小区基站发送点在占用信道之前不需要进行任 何信道检测， 直接占用信道即可的考虑， 对于工作在授权频谱的小小区， 可以 将簇内的小小区全部划分至第一集合。 而对于工作在非授权频谱的 LAA 小区， 则仅将检测信道空闲的 LAA小区划分到第一集合。
对于非授权频谱， 簇内同一运营商部署下的所有 LAA小小区将会周期性同 步地进行信道 CCA检测，而通过 CCA检测可以实现对 LAA小小区的初步筛选， 选取 CCA成功的 LAA小小区来进行后续的进一步筛选， 最终得到可优先满足 传输需求， 优选使用资源的 LAA小小区集合以及可以暂时忽视传输需求， 暂时 不占用资源的 LAA小小区集合。
5103, 计算所述第一集合内每两个小小区之间的干扰值并与预设干扰阈值 比较， 将干扰值大于所述预设干扰阈值的小小区组合划分至第二集合， 否则划 分到第三集合。
其中， 预设干扰阈值可以由判决功能实体根据历史数据进行设置， 也可以 由人工根据经验进行设置， 本发明实施例不作任何限定。 此处可以通过干扰阈值来对第一集合内的小小区进行进一步筛选， 将相互 干扰较大的小小区组合成对划分至第二集合。
5104, 接收所述第二集合中各个小小区上报的优先级信息， 并根据各个小 小区的优先级信息和地理位置信息， 将所述第二集合中的小小区分成活动集合 和抑制集合。
当经过干扰阈值比较的划分之后， 第二集合内的小小区可以主动进行自身 的优先级计算并将得到的优先级信息上报给判决功能实体， 或者也可以由判决 功能实体指示第二集合内的小小区执行优先级及上报的步骤。
具体地， 所述优先级信息可以由小小区根据其服务且激活数据緩存区不为 空的终端的调度等级因子确定， 所述调度等级因子用于表征终端调度的优先顺 序， 当存在多个终端时， 选择其中调度等级因子的最大值作为该小小区的优先 级。
所述优先级具体可以根据如下公式计算得到：
Figure imgf000008_0001
其中， pk为同个簇内第一集合中的第 k个小小区的优先级， δ Α为被调度终 端 i可容忍的超出最大时延的数据包的比例上限， Ri t)为被调度终端 i在当前 t 时刻的最大数据速率， 为被调度终端 i 的平均数据速率， Di(t)为被调度终 端 i待发数据緩存区的队列时延， η为被调度终端 i能容忍的最大时延， （^^为 被调度终端 i待发送数据业务对应的服务 ^量需求等级标识。
当获取到小小区的优先级信息和地理位置信息之后， 便可以采用二分法或 其他分类方式对小小区进行活动集合和抑制集合的划分， 其中活动集合中小小 区的需求优先满足， 抑制集合中小小区的需求则可以暂时忽略， 指示其在某段 时间内处于不发送状态。
5105, 发送传输控制信令至所述第三集合、 活动集合和抑制集合中的小小 区以使得第三集合和活动集合中的小小区在接收到传输控制信令后开始数据传 输， 抑制集合中的小小区在接收到传输控制信令后在信道占用时期进入不发送 状态。
在将符合条件的小小区进行多次筛选最后划分成第三集合、 活动集合和抑 制集合之后， 便可以处理不同集合内小小区的请求冲突， 发送传输控制信令至 所述第三集合、 活动集合和抑制集合中的小小区以使得第三集合和活动集合中 的小小区在接收到传输控制信令后开始数据传输， 抑制集合中的小小区在接收 到传输控制信令后在信道占用时期进入不发送状态。
可选地， 所述传输控制信令通过授权频段传输或者通过基站之间的接口传 输。 安全性和稳定性更高。
在本发明实施例中， 通过分簇、 CCA检测、 预设干扰阈值比对以及根据优 先级信息和地理位置信息对小小区进行了多层级的歸选， 通过抑制一部分对相 邻小区造成干扰的小小区发送数据，减少小区间***干扰，提高***整体性能， 使得小小区***内部和 LAA***与 Wi-Fi***之间更好共存。
请参照图 2， 为本发明处理冲突的方法的第二实施例的流程示意图； 在本实 施例中， 所述方法包括以下步骤：
5201 , 根据同一频段上各个小小区的地理位置信息进行分簇。
其中， 所述各个小小区均为工作在授权频谱的小小区或所述各个小小区均 为工作在非授权频谱的授权辅助接入 LAA小区。
具体地， 判决功能实体可以读取各个小小区的地位位置信息如坐标信息， 将相邻的 Small Cell标记为同一簇， 簇内小小区共享信息， 由判决功能实体统一 控制。 实现资源的动态分配和智能管理， 承载控制信令。 判决功能实体与簇内 小小区的信息交互占用授权频段资源， 其可以周期性更新簇内所有小小区的信 息， 并具有软件编程实现各种算法的功能。
5202, 若所述各个小小区均为工作在授权频谱的小小区， 则将簇内的小小 区划分至第一集合， 若所述各个小小区均为工作在非授权频谱的 LAA小区， 则 在簇内 LAA 小区周期性同步进行信道空闲评估之后， 将检测信道空闲的 LAA 小区划分至第一集合。
其中， 对于非授权频谱， 簇内同一运营商部署下的所有 LAA小小区将会周 期性同步地进行信道 CCA检测， 而通过 CCA检测可以实现对 LAA小小区的初 步筛选， 选取 CCA成功的 LAA小小区来进行后续的进一步筛选， 最终得到可 优先满足传输需求， 优选使用资源的 LAA小小区集合以及可以暂时忽视传输需 求， 暂时不占用资源的 LAA小小区集合。
5203, 计算所述第一集合内每两个小小区之间的干扰值并与预设干扰阈值 比较， 将干扰值大于所述预设干扰阈值的小小区组合划分至第二集合， 否则划 分到第三集合。
其中， 预设干扰阈值可以由判决功能实体根据历史数据进行设置， 也可以 由人工根据经验进行设置， 本发明实施例不作任何限定。
此处可以通过干扰阈值来对第一集合内的小小区进行进一步筛选， 将相互 干扰较大的小小区组合成对划分至第二集合。
5204, 接收所述第二集合中各个小小区上报的优先级信息。
当经过干扰阈值比较的划分之后， 第二集合内的小小区可以主动进行自身 的优先级计算并将得到的优先级信息上报给判决功能实体， 或者也可以由判决 功能实体指示第二集合内的小小区执行优先级及上报的步骤。
具体地， 所述优先级信息可以由小小区根据其服务且激活数据緩存区不为 空的终端的调度等级因子确定， 所述调度等级因子用于表征终端调度的优先顺 序， 当存在多个终端时， 选择其中调度等级因子的最大值作为该小小区的优先 级。
所述优先级具体可以根据如下公式计算得到：
Figure imgf000010_0001
其中， pk为同个簇内第一集合中的第 k个小小区的优先级， δ Α为被调度终 端 i可容忍的超出最大时延的数据包的比例上限， Ri t)为被调度终端 i在当前 t 时刻的最大数据速率， 为被调度终端 i 的平均数据速率， Di(t)为被调度终 端 i待发数据緩存区的队列时延， η为被调度终端 i能容忍的最大时延， （^^为 被调度终端 i待发送数据业务对应的服务 ^量需求等级标识。
当获取到小小区的优先级信息和地理位置信息之后， 便可以采用二分法对 小小区进行活动集合和抑制集合的划分， 其中活动集合中小小区的需求优先满 足， 抑制集合中小小区的需求则可以暂时忽略， 指示其在某段时间内处于不发 送状态。
5205, 初始化活动集合和抑制集合。
初始化之后， 活动集合和抑制集合均为空集。
5206, 选择所述第二集合中当前优先级最高的小小区 m标记为起点， 将其 加入活动集合， 计算此次去除小小区 m之后的第二集合中每个小小区与小小区 m 之间的干扰值并与所述预设干扰阈值比较， 将干扰值大于所述预设干扰阈值 的小小区加入到所述抑制集合， 并在所述第二集合中去除当前活动集合和抑制 集合的并集所包含的小小区。
5207, 更新起点， 重复执行选择小小区加入活动集合和抑制集合的步骤直 至所述第二集合为空集。 通过这样的分类方式， 可以将优先级较高的一部分小小区置于活动集合， 同时将对这一部分优先级较高的小小区造成较大干扰的另一部分小小区置于活 动集合， 从而实现了比较理想的分类结果。
S208, 发送传输控制信令至所述第三集合、 活动集合和抑制集合中的小小 区以使得第三集合和活动集合中的小小区在接收到传输控制信令后开始数据传 输， 抑制集合中的小小区在接收到传输控制信令后在信道占用时期进入不发送 状态。
在将符合条件的小小区进行多次筛选最后划分成第三集合、 活动集合和抑 制集合之后， 便可以处理不同集合内小小区的请求冲突， 发送传输控制信令至 所述第三集合、 活动集合和抑制集合中的小小区以使得第三集合和活动集合中 的小小区在接收到传输控制信令后开始数据传输， 抑制集合中的小小区在接收 到传输控制信令后在信道占用时期进入不发送状态。
本实施例中， 在计算优先级时及冲突退避机制中综合考虑终端用户业务情 况和不同业务对资源的需求差异， 因此可以更加合理的分配资源， 提高 QoS ; 且基于虚拟化网络架构进行管理和控制， 更加灵活， 可减少一部分在小基站层 面的计算负担和信令交互， 高效率地通过算法实现数据分析和得出较优决策。
请参照图 3， 为本发明实施例信道占用的判决装置的组成示意图， 在本实施 例中， 所述判决装置包括：
分簇单元 100，设置为根据同一频段上各个小小区的地理位置信息进行分簇。 其中， 所述各个小小区均为工作在授权频谱的小小区或所述各个小小区均 为工作在非授权频谱的授权辅助接入 LAA小区；
具体地， 判决装置可以读取各个小小区的地位位置信息如坐标信息， 将相 邻的 Small Cell标记为同一簇， 簇内小小区共享信息， 由判决装置统一控制。 实 现资源的动态分配和智能管理， 承载控制信令。 判决装置与簇内小小区的信息 交互占用授权频段资源， 其可以周期性更新簇内所有小小区的信息， 并具有软 件编程实现各种算法的功能。 在硬件实现上， 可以将判决装置集成在软件定义 网络 （Software Defined Network, SDN) 中或者独立设置。
第一划分单元 200，设置为若所述各个小小区均为工作在授权频谱的小小区， 则将簇内的小小区划分至第一集合， 若所述各个小小区均为工作在非授权频谱 的 LAA小区， 则在簇内 LAA小区周期性同步进行信道空闲评估之后， 将检测 信道空闲的 LAA小区划分至第一集合；
其中， 对于非授权频谱， 簇内同一运营商部署下的所有 LAA小小区将会周 期性同步地进行信道 CCA检测， 而通过 CCA检测可以实现对 LAA小小区的初 步筛选， 选取 CCA成功的 LAA小小区来进行后续的进一步筛选， 最终得到可 优先满足传输需求， 优选使用资源的 LAA小小区集合以及可以暂时忽视传输需 求， 暂时不占用资源的 LAA小小区集合。
计算单元 300，设置为计算所述第一集合内每两个小小区之间的干扰值并与 预设干扰阈值比较， 将干扰值大于所述预设干扰阈值的小小区组合划分至第二 集合， 否则划分到第三集合；
其中， 预设干扰阈值可以由判决装置根据历史数据进行设置， 也可以由人 工根据经验进行设置， 本发明实施例不作任何限定。
此处可以通过干扰阈值来对第一集合内的小小区进行进一步筛选， 将相互 干扰较大的小小区组合成对划分至第二集合。
第二划分单元 400，设置为接收所述第二集合中各个小小区上报的优先级信 息， 并根据各个小小区的优先级信息和地理位置信息， 将所述第二集合中的小 小区分成活动集合和抑制集合；
当经过干扰当获取到小小区的优先级信息和地理位置信息之后， 便可以采 用二分法对小小区进行活动集合和抑制集合的划分， 其中活动集合中小小区的 需求优先满足， 抑制集合中小小区的需求则可以暂时忽略， 指示其在某段时间 内处于不发送状态。
阈值比较的划分之后， 第二集合内的小小区可以主动进行自身的优先级计 算并将得到的优先级信息上报给判决装置， 或者也可以由判决装置指示第二集 合内的小小区执行优先级及上报的步骤。
具体地， 所述优先级信息可以由小小区根据其服务且激活数据緩存区不为 空的终端的调度等级因子确定， 所述调度等级因子用于表征终端调度的优先顺 序， 当存在多个终端时， 选择其中调度等级因子的最大值作为该小小区的优先 级。
所述优先级具体可以根据如下公式计算得到：
Pk = max{-lg(¾ -| -^- Q^}
其中， pk为同个簇内第一集合中的第 k个小小区的优先级， δ .为被调度终 端 i可容忍的超出最大时延的数据包的比例上限， Ri t)为被调度终端 i在当前 t 时刻的最大数据速率， 为被调度终端 i 的平均数据速率， Di(t)为被调度终 端 i待发数据緩存区的队列时延， η为被调度终端 i能容忍的最大时延， （^^为 被调度终端 i待发送数据业务对应的服务 ^量需求等级标识。
发送单元 500， 设置为发送传输控制信令至所述第三集合、 活动集合和抑制 集合中的小小区以使得第三集合和活动集合中的小小区在接收到传输控制信令 后开始数据传输， 抑制集合中的小小区在接收到传输控制信令后在信道占用时 期进入不发送状态。
在将符合条件的小小区进行多次筛选最后划分成第三集合、 活动集合和抑 制集合之后， 便可以处理不同集合内小小区的请求冲突， 发送传输控制信令至 所述第三集合、 活动集合和抑制集合中的小小区以使得第三集合和活动集合中 的小小区在接收到传输控制信令后开始数据传输， 抑制集合中的小小区在接收 到传输控制信令后在信道占用时期进入不发送状态可选地， 可选地， 所述传输 控制信令通过授权频段传输或者通过基站之间的接口传输。 所述第二划分单元 400具体设置为：
初始化活动集合和抑制集合；
选择所述第二集合中当前优先级最高的小小区 m标记为起点， 将其加入活 动集合， 计算此次去除小小区 m之后的第二集合中每个小小区与小小区 m之间 的干扰值并与所述预设干扰阈值比较， 将干扰值大于所述预设干扰阈值的小小 区加入到所述抑制集合， 并在所述第二集合中去除当前活动集合和抑制集合的 并集所包含的小小区；
更新起点， 重复执行选择小小区加入活动集合和抑制集合的步骤直至所述 第二集合为空集。
以上分簇单元 100、 第一划分单元 200、 计算单元 300、 第二划分单元 400 和发送单元 500可以独立存在， 也可以集成设置， 分簇单元 100、 第一划分单元 200、 计算单元 300、 第二划分单元 400和发送单元 500可以以硬件的形式独立 于信道占用的判决装置的处理器单独设置， 且设置形式可以是微处理器的形式； 也可以以硬件形式内嵌于该判决装置的处理器中， 还可以以软件形式存储于该 判决装置的存储器中， 以便于该判决装置的处理器调用执行以上分簇单元 100、 第一划分单元 200、 计算单元 300、 第二划分单元 400和发送单元 500对应的搡 作。 例如， 在本发明信道占用的判决装置的实施例 （图 3 所示的实施例） 中， 计算单元 300可以为该装置的处理器， 而分簇单元 100、 第一划分单元 200、 第 二划分单元 400和发送单元 400的功能可以内嵌于该处理器中， 也可以独立于 处理器单独设置， 也可以以软件的形式存储于存储器中， 由处理器调用实现其 功能。 本发明实施例不做任何限制。 以上处理器可以为中央处理单元 （CPU)、 微处理器、 单片机等。
其中， 第一划分单元 100和第二划分单元 300可以集成设置， 也可以独立 设置， 发送单元 500可以作为该该装置的接口电路。
需要说明的是， 本说明书中的各个实施例均采用递进的方式描述， 每个实 施例重点说明的都是与其它实施例的不同之处， 各个实施例之间相同相似的部 分互相参见即可。 对于装置实施例而言， 由于其与方法实施例基本相似， 所以 描述的比较简单， 相关之处参见方法实施例的部分说明即可。
通过上述实施例的描述， 本发明具有以下优点：
通过分簇、 CCA检测、 预设干扰阈值比对以及根据优先级信息和地理位置 信息对小小区进行了多层级的筛选， 通过抑制一部分对相邻小区造成干扰的小 小区发送数据， 减少小区间***干扰， 提高***整体性能， 使得小小区***内 部以及 LAA***和 Wi-Fi***之间更好共存。
图 4 是本发明实施例的包括信道占用的判决装置的终端的结构示意图。 本 发明实施例中的终端 600 可以是不同类型的电子设备， 例如： 智能手机、 平板 电脑、 掌上电脑以及移动互联网设备、 个人数字助理、 媒体播放器、 智能电视、 智能手表、 智能眼镜、 智能手环等。 在本发明上述实施例中的信道占用的判决 装置应用于所述终端 600。
如图 4所示， 本发明实施例中的终端 600包括： 至少一个处理器 610， 例如 CPU, 至少一个接收器 613， 至少一个存储器 614， 至少一个发送器 615， 至少 一个通信总线 612。其中，所述通信总线 612用于实现这些组件之间的连接通信。 其中， 所述接收器 613和所述发送器 615 可以是有线发送端口， 也可以为无线 设备， 例如包括天线装置， 用于与其他设备进行数据通信。 所述存储器 614 可 以是高速 RAM存储器， 也可以是非不稳定的存储器 （non-volatile memory) , 例 如至少一个磁盘存储器。
所述处理器 610可执行所述终端 600的搡作***以及安装的各类应用程序、 程序代码等， 例如， 上述的各个单元， 包括所述分簇单元 100、 所述计算单元 300等。
所述存储器 614中存储有程序代码，且所述处理器 610可通过通信总线 612， 调用所述存储器 614 中存储的程序代码以执行相关的功能。 例如， 图 3 中所述 的各个单元 （例如， 所述分簇单元 100、 所述计算单元 300等） 是存储在所述存 储器 614 中的程序代码， 并由所述处理器 610所执行， 从而实现所述各个单元 的功能以实现对信道占用的判决。
在本发明的一个实施例中， 所述存储器 614 存储多个指令， 所述多个指令 被所述处理器 610 所执行以实现信道占用的判决方法。 具体而言， 所述处理器 610对所述多个指令的执行包括：根据同一频段上各个小小区的地理位置信息进 行分簇， 所述各个小小区均为工作在授权频谱的小小区或所述各个小小区均为 工作在非授权频谱的授权辅助接入 LAA小区； 若所述各个小小区均为工作在授 权频谱的小小区， 则将簇内的小小区划分至第一集合， 若所述各个小小区均为 工作在非授权频谱的 LAA小区， 则在簇内 LAA小区周期性同步进行信道空闲 评估之后， 将检测信道空闲的 LAA小区划分至第一集合； 计算所述第一集合内 每两个小小区之间的干扰值并与预设干扰阈值比较， 将干扰值大于所述预设干 扰阈值的小小区组合划分至第二集合， 否则划分到第三集合； 接收所述第二集 合中各个小小区上报的优先级信息， 并根据各个小小区的优先级信息和地理位 置信息， 将所述第二集合中的小小区分成活动集合和抑制集合； 发送传输控制 信令至所述第三集合、 活动集合和抑制集合中的小小区以使得第三集合和活动 集合中的小小区在接收到传输控制信令后开始数据传输， 抑制集合中的小小区 在接收到传输控制信令后在信道占用时期进入不发送状态。
在进一步的实施例中， 所述优先级信息由小小区根据被其调度的终端的调 度等级因子确定， 所述调度等级因子用于表征终端被调度的优先顺序， 当存在 多个终端时， 选择其中调度等级因子的最大值作为该小小区的优先级。
在进一步的实施例中， 所述优先级根据如下公式计算得到：
Figure imgf000015_0001
其中， pk为同个簇内第一集合中的第 k个小小区的优先级， δ Α为被调度终 端 i可容忍的超出最大时延的数据包的比例上限， Ri t)为被调度终端 i在当前 t 时刻的最大数据速率， R^t)为被调度终端 i 的平均数据速率， Di(t)为被调度终 端 i待发数据緩存区的队列时延， η为被调度终端 i能容忍的最大时延， （^^为 被调度终端 i待发送数据业务对应的服务 ^量需求等级标识。
在进一步的实施例中， 所述根据各个小小区的优先级信息和地理位置信息， 将所述第二集合中的小小区分成活动集合和抑制集合， 所述处理器 610 对所述 多个指令的执行还包括： 初始化活动集合和抑制集合； 选择所述第二集合中当 前优先级最高的小小区 m标记为起点， 将其加入活动集合， 计算此次去除小小 区 m之后的第二集合中每个小小区与小小区 m之间的干扰值并与所述预设干扰 阈值比较， 将干扰值大于所述预设干扰阈值的小小区加入到所述抑制集合， 并 在所述第二集合中去除当前活动集合和抑制集合的并集所包含的小小区； 更新 起点， 重复执行选择小小区加入活动集合和抑制集合的步骤直至所述第二集合 为空集。
在进一步的实施例中， 所述传输控制信令通过授权频段传输或者通过基站 之间的接口传输。
具体地， 所述处理器 610对上述指令的具体实现方法可参考图 1至图 2对 应实施例中相关步骤的描述， 在此不赘述。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程， 是可以通过计算机程序来指令相关的硬件来完成， 所述的程序可存储于一计算 机可读取存储介^中，该程序在执行时， 可包括如上述各方法的实施例的流程。 其中， 所述的存储介 ^可为磁碟、 光盘、 只读存储记忆体（Read-Only Memory, 简称 ROM) 或随机存储记忆体 (Random Access Memory, 简称 RAM) 等。
以上所揭露的仅为本发明较佳实施例而已， 当然不能以此来限定本发明之 权利范围， 因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims

权利要求书
1、 一种信道占用的判决方法， 其特征在于， 包括：
根据同一频段上各个小小区的地理位置信息进行分簇， 所述各个小小区均 为工作在授权频谱的小小区或所述各个小小区均为工作在非授权频谱的授权辅 助接入 LAA小区；
若所述各个小小区均为工作在授权频谱的小小区， 则将簇内的小小区划分 至第一集合， 若所述各个小小区均为工作在非授权频谱的 LAA小区， 则在簇内 LAA小区周期性同步进行信道空闲评估之后，将检测信道空闲的 LAA小区划分 至第一集合；
计算所述第一集合内每两个小小区之间的干扰值并与预设干扰阈值比较， 将干扰值大于所述预设干扰阈值的小小区组合划分至第二集合， 否则划分到第 三集合；
接收所述第二集合中各个小小区上报的优先级信息， 并根据各个小小区的 优先级信息和地理位置信息， 将所述第二集合中的小小区分成活动集合和抑制 集合；
发送传输控制信令至所述第三集合、 活动集合和抑制集合中的小小区以使 得第三集合和活动集合中的小小区在接收到传输控制信令后开始数据传输， 抑 制集合中的小小区在接收到传输控制信令后在信道占用时期进入不发送状态。
2、 如权利要求 1所述的方法， 其特征在于， 所述优先级信息由小小区根据 被其调度的终端的调度等级因子确定， 所述调度等级因子用于表征终端被调度 的优先顺序， 当存在多个终端时， 选择其中调度等级因子的最大值作为该小小 区的优先级。
3、 如权利要求 2所述的方法， 其特征在于， 所述优先级根据如下公式计算 得到：
Figure imgf000017_0001
其中， pk为同个簇内第一集合中的第 k个小小区的优先级， δ Α为被调度终 端 i可容忍的超出最大时延的数据包的比例上限， Ri t)为被调度终端 i在当前 t 时刻的最大数据速率， 为被调度终端 i 的平均数据速率， Di(t)为被调度终 端 i待发数据緩存区的队列时延， η为被调度终端 i能容忍的最大时延， （^^为 被调度终端 i待发送数据业务对应的服务 ^量需求等级标识。
4、 如权利要求 1-3任一项所述的方法， 其特征在于， 所述根据各个小小区 的优先级信息和地理位置信息， 将所述第二集合中的小小区分成活动集合和抑 制集合， 包括：
初始化活动集合和抑制集合；
选择所述第二集合中当前优先级最高的小小区 m标记为起点， 将其加入活 动集合， 计算此次去除小小区 m之后的第二集合中每个小小区与小小区 m之间 的干扰值并与所述预设干扰阈值比较， 将干扰值大于所述预设干扰阈值的小小 区加入到所述抑制集合， 并在所述第二集合中去除当前活动集合和抑制集合的 并集所包含的小小区；
更新起点， 重复执行选择小小区加入活动集合和抑制集合的步骤直至所述 第二集合为空集。
5、 如权利要求 4所述的方法， 其特征在于， 所述传输控制信令通过授权频 段传输或者通过基站之间的接口传输。
6、 一种信道占用的判决装置， 其特征在于， 包括：
分簇单元， 设置为根据同一频段上各个小小区的地理位置信息进行分簇， 所述各个小小区均为工作在授权频谱的小小区或所述各个小小区均为工作在非 授权频谱的授权辅助接入 LAA小区；
第一划分单元， 设置为若所述各个小小区均为工作在授权频谱的小小区， 则将簇内的小小区划分至第一集合， 若所述各个小小区均为工作在非授权频谱 的小小区， 则在簇内 LAA小区周期性同步进行信道空闲评估之后， 将检测信道 空闲的 LAA小区划分至第一集合；
计算单元， 设置为计算所述第一集合内每两个小小区之间的干扰值并与预 设干扰阈值比较， 将干扰值大于所述预设干扰阈值的小小区组合划分至第二集 合， 否则划分到第三集合；
第二划分单元， 设置为接收所述第二集合中各个小小区上报的优先级信息， 并根据各个小小区的优先级信息和地理位置信息， 将所述第二集合中的小小区 分成活动集合和抑制集合；
发送单元， 设置为发送传输控制信令至所述第三集合、 活动集合和抑制集 合中的小小区以使得第三集合和活动集合中的小小区在接收到传输控制信令后 开始数据传输， 抑制集合中的小小区在接收到传输控制信令后在信道占用时期 进入不发送状态。
7、 如权利要求 6所述的装置， 其特征在于， 所述优先级信息由小小区根据 被其调度的终端的调度等级因子确定， 所述调度等级因子用于表征终端被调度 的优先顺序， 当存在多个终端时， 选择其中调度等级因子的最大值作为该小小 区的优先级。
8、 如权利要求 7所述的装置， 其特征在于， 所述优先级根据如下公式计算 得到：
Figure imgf000019_0001
其中， pk为同个簇内第一集合中的第 k个小小区的优先级， δ Α为被调度终 端 i可容忍的超出最大时延的数据包的比例上限， Ri t)为被调度终端 i在当前 t 时刻的最大数据速率， R^t)为被调度终端 i 的平均数据速率， Di(t)为被调度终 端 i待发数据緩存区的队列时延， η为被调度终端 i能容忍的最大时延， （^^为 被调度终端 i待发送数据业务对应的服务 ^量需求等级标识。
9、 如权利要求 6-8任一项所述的装置， 其特征在于， 所述第二划分单元具 体设置为：
初始化活动集合和抑制集合；
选择所述第二集合中当前优先级最高的小小区 m标记为起点， 将其加入活 动集合， 计算此次去除小小区 m之后的第二集合中每个小小区与小小区 m之间 的干扰值并与所述预设干扰阈值比较， 将干扰值大于所述预设干扰阈值的小小 区加入到所述抑制集合， 并在所述第二集合中去除当前活动集合和抑制集合的 并集所包含的小小区；
更新起点， 重复执行选择小小区加入活动集合和抑制集合的步骤直至所述 第二集合为空集。
10、 如权利要求所述 9 所述的装置， 其特征在于， 所述传输控制信令通过 授权频段传输或者通过基站之间的接口传输。
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