WO2013029417A1 - 频谱资源重配方法、装置及系统 - Google Patents
频谱资源重配方法、装置及系统 Download PDFInfo
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- WO2013029417A1 WO2013029417A1 PCT/CN2012/077856 CN2012077856W WO2013029417A1 WO 2013029417 A1 WO2013029417 A1 WO 2013029417A1 CN 2012077856 W CN2012077856 W CN 2012077856W WO 2013029417 A1 WO2013029417 A1 WO 2013029417A1
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Classifications
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- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0006—Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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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
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/045—Interfaces between hierarchically different network devices between access point and backbone network device
Definitions
- the present invention relates to a spectrum resource reconfiguration technique, and in particular, to a spectrum resource reconfiguration method, apparatus, and system. Background technique
- IMT International Mobile Phone
- the Mobile Telecom system shows an unprecedented spectrum tension.
- For broadcast TV systems there is a large amount of available space for spectrum resources, and the utilization rate is low, but it cannot be used by IMT systems.
- TVWS TV White Space
- the cognitive radio technology IMT system by acquiring the information of the broadcast television system and waiting for the unused spectrum resources (TVWS, TV White Space) of the radio and television system in space and time, the utilization of this part of the spectrum can be improved, which can be greatly improved.
- the spectrum of the IMT system is tight, and at the same time, reliable power control, main user discovery mechanism and other technologies are used to ensure no interference to the main system.
- LTE Long Term Evolution
- LTE-A Long Term Evolution-advanced
- the backhaul link may be wireless in LTE/LTE-A, such as in remote areas, coverage of temporary hotspot areas, disaster relief periods, access nodes in nomadic states, and the like.
- the resource allocation of the wireless backhaul link it is basically considered to allocate a part of the licensed spectrum resources to the wireless backhaul link of the LTE/LTE-A system according to the provisions of the spectrum management organization. Since the spectrum that each operator finally obtains for the operation of the LTE/LTE-A system is very limited, this way of dividing some resources into the wireless backhaul link is bound to cause extreme impact on the capacity and quality of the access link. Great impact. Despite the strict physical layer and high-level protocol definitions, losses due to insufficient spectrum resources can be minimized, but such losses are inevitable. With the introduction of cognitive radio technology, it is possible to find suitable free spectrum resources (such as TVWS) for the backhaul link, so that it does not have to share the licensed spectrum resources of the access link.
- suitable free spectrum resources such as TVWS
- FIG 1 is a schematic diagram of the logical architecture of the TVWS Cognitive Radio (CR) system.
- CR TVWS Cognitive Radio
- FIG 1 shows in Figure 1, in the related research, there are several application scenarios, such as using the TVWS spectrum resources to establish the medium and long-range wireless access chain. Road, the use of TVWS spectrum resources to establish short-range wireless access links, the application of Ad-hoc networks in the TVWS spectrum, the application of Multimedia Broadcast Multicast Service (MBMS) on the TVWS spectrum and the backhaul link in TVWS Applications on the spectrum, etc.
- the node that performs the resource reconfiguration decision is the central control point (CCP, Central Control Point).
- CCP Central Control Point
- CCP Central Control Point
- CCP Central Control Point
- DB Data Base
- the primary user idles the spectrum resources, coordinates the allocation to each base station, and controls each base station to perform Rematch.
- the database here contains the spectrum usage information of the primary user.
- the reconfiguration of the TVWS band CR technology is not determined as a whole, and the division of the stages in the overall process and the definition of the functions of each stage are lacking. That is to say, the CR technology in the TVWS band is still in the discussion stage, and there is no mature technology available for reference. Summary of the invention
- the main object of the present invention is to provide a spectrum resource reconfiguration method, apparatus and system, which can fully utilize various radio spectrum resources in the system and fully ensure resource allocation in the wireless communication system.
- a method for reconfiguring a spectrum resource comprising:
- the spectrum resource reconfiguration decision is made, and the spectrum resources are configured for the to-be-configured link according to the reconfiguration decision.
- the method further includes:
- the information required for obtaining the spectrum resource reconfiguration decision includes at least one of the following information:
- the reconfiguration system triggers spectrum resource reconfiguration to:
- the reconfiguration system determines whether to perform the spectrum resource according to the primary user information in the obtained database, or the reconfiguration information of the reconfiguration system on the adjacent area, or the spectrum sensing measurement result of the subordinate node or the spectrum resource reconfiguration request information. Configure the operation.
- the reconfiguration system reoccupies the configured spectrum resource by the primary user, or the resource of the adjacent area is re-paired with the reconfiguration system to cause interference, or when the spectrum resource request of the subordinate network node is received, Trigger frequency resource reconfiguration.
- the generating spectrum resource reconfiguration decision is:
- the reconfiguration system makes a reconfiguration decision according to different reconfiguration trigger events; and includes: allocating spectrum resources to the network node that issues the spectrum resource request;
- the method further includes:
- the reconfiguring decision is adjusted according to the learned sensing result to: perform interference source coordination or re-allocate new frequency resource when determining that the link configuring the spectrum resource has unexpected interference;
- the transmission power is reduced, or a new spectrum resource is reallocated.
- the method further includes:
- the network node that receives the link to be configured feedbacks the resource reconfiguration completion status, and performs reconfiguration data update processing.
- the method further includes:
- the relevant nodes monitor the overall performance of the system, including:
- Reconfiguration systems that trigger reconfiguration and/or participate in reconfiguration monitor system performance within their respective control ranges, and/or database monitors primary user system performance;
- the performance monitoring indicator includes at least one of the following: The user throughput, the spectrum efficiency, the coverage, the mobility management feature class indicator, and the quality class indicator; wherein the mobility management feature class indicator includes a handover success rate and/or a handover delay; the quality class indicator includes at least the following One: Service download speed, business call delay, voice quality.
- a spectrum resource reconfiguration device comprising a trigger unit, a decision unit and a configuration unit, wherein:
- a trigger unit configured to trigger spectrum resource reconfiguration
- a decision unit configured to generate a spectrum resource reconfiguration decision
- the spectrum resource reconfiguration device further includes:
- an acquiring unit configured to acquire information required for a spectrum resource reconfiguration decision, where the information includes at least one of the following information:
- the triggering unit determines whether to perform spectrum according to the obtained primary user information from the database, or reconfiguration information of the reconfiguration system on the adjacent area, or spectrum sensing measurement result of the subordinate node or spectrum resource reconfiguration request information. Resource reconfiguration operation.
- the triggering unit is further configured to: when the configured spectrum resource is re-occupied by the primary user, or the resource of the adjacent area is re-paired by the reconfiguration system to cause interference, or when the spectrum resource request of the subordinate network node is received Trigger spectrum resource configuration.
- the device further comprises a measuring unit and an adjusting unit; wherein:
- a measuring unit configured to perform sensing measurement on a configured spectrum of the link
- the adjusting unit is configured to adjust the reconfiguration decision according to the learned sensing result.
- the configuration unit is further configured to reconfigure the spectrum resource for the to-be-configured link according to the adjusted reconfiguration decision.
- the adjusting unit is further configured to perform interference source coordination or redistribute new frequency resource when determining that the link configuring the spectrum resource has unexpected interference;
- the device further includes:
- the completion unit after completing the spectrum resource configuration of the link, feeds back the spectrum resource configuration result and updates the spectrum resource configuration data.
- the device further includes:
- the monitoring unit is configured to perform performance monitoring on the link configuring the spectrum resource, including: a reconfiguration system that triggers reconfiguration and/or participates in reconfiguration, monitors system performance in its respective control range, and/or monitors the primary user System performance
- the indicators monitored include at least one of the following:
- the user throughput, the spectrum efficiency, the coverage, the mobility management feature class indicator, and the quality class indicator; wherein the mobility management feature class indicator includes a handover success rate and/or a handover delay; the quality class indicator includes at least the following One: Service download speed, business call delay, voice quality.
- a frequency resource reconfiguration system comprising a database DB, a central control node CCP and a reconfiguration base station RBS, wherein:
- a database DB configured to store status information of the primary system spectrum resources, and information about the use of the primary system idle spectrum resources by the CCP;
- the central control node CCP is connected to the DB, and is configured to aggregate the WS spectrum resource request from each RBS, issue a WS resource allocation request to the DB, coordinately allocate the acquired WS spectrum resource to the RBS, and receive the spectrum resource reconfiguration command from the DB. And controlling the RBS to perform corresponding spectrum resource reconfiguration; feeding back a configuration update message to the DB; transmitting a sensing measurement configuration message to the RB S, and feeding back the sensing measurement result to the DB;
- the RBS is connected to the CCP, configured to configure the WS spectrum resource indicated by the CCP to each wireless link; change or adjust the wireless communication parameter according to the indication of the CCP; perform spectrum sensing measurement.
- the primary system spectrum state information includes at least one of the following information: spectrum resource information being used, unused spectrum resource information, and spectrum resource information that is not allowed to be used; wherein, the spectrum resource information being used includes At least one of the following: frequency, bandwidth, possible duration, coverage, and isolation band information;
- the unused spectrum resource information includes at least one of the following information: frequency point, working bandwidth, coverage, possible duration, and maximum transmit power allowed;
- the spectrum resource information that is not allowed to use includes at least one of the following information: a frequency point, a working bandwidth, and the like;
- the usage information of the CCP for the idle spectrum resource of the primary system includes at least one of the following information:
- the frequency and bandwidth of the idle spectrum used by the CCP, and the location of the CCP using the free spectrum are set.
- the currently available spectrum resources and the used spectrum resources are stored, so that when some links have spectrum resources shortage or spectrum resources are unavailable, the system will use the currently available spectrum.
- the corresponding spectrum resources are allocated to these links, so that the links with tight spectrum resources have resources available, and as many communication services as possible are guaranteed.
- the technical solution of the present invention makes the use of spectrum resources more reasonable, can fully utilize all spectrum resources, and is not limited to a specific spectrum resource, so as to maximize the utilization of spectrum resources.
- Figure 1 is a schematic diagram of the logical architecture of a TVWS band cognitive radio system
- FIG. 2 is a flowchart of a method for reconfiguring a spectrum resource according to the present invention
- FIG. 3 is a flowchart of a method for reconfiguring a spectrum resource according to an embodiment of the present invention
- FIG. 4 is a flowchart of a method for reconfiguring a spectrum resource according to Embodiment 2 of the present invention
- FIG. 5 is a flowchart of a method for reconfiguring a spectrum resource according to Embodiment 3 of the present invention
- FIG. 6 is a flowchart of a method for reconfiguring a spectrum resource according to Embodiment 4 of the present invention.
- FIG. 7 is a schematic structural diagram of a spectrum resource reconfiguration apparatus according to the present invention. detailed description
- the spectrum resource reconfiguration system of the present invention can be understood by referring to the structure shown in FIG. 1.
- the spectrum resource reconfiguration system of the present invention includes DB, CCP and RBS;
- the database may be provided by the main system operator or a third party.
- the database contains the spectrum resource usage information of the main system; the central control node uses the information of the idle spectrum resources of the main system; and the management domain policy information is also stored in the database.
- the DB mainly stores the spectrum status information of the primary system, including the spectrum resource information being used, the unused spectrum resource information, and the resource spectrum that is not allowed to be used (which may be the management domain restricted spectrum or the operator reserved spectrum, etc.);
- the spectrum resource information used includes but is not limited to: frequency, bandwidth, possible duration, coverage and isolation band; unused spectrum resource information, including but not limited to: frequency, working bandwidth, coverage, possible Information such as duration, maximum transmit power allowed, spectrum resource information not allowed, including but not limited to: frequency, working bandwidth, etc.
- the information about the use of the primary system idle spectrum by each central control node includes: the idle spectrum used by it, and the location of the central control node.
- the database is responsible for providing the primary system idle node resource information for each central control node.
- the central control point indicates a central control node of a system or an operator. It can be a fixed connection or a mobile connection with the DB. It includes at least the following functions: 1. Convergence from each reconfigurable base station (RBS, Reconfiguration Base Station) WS spectrum resource application, and issue WS resource allocation request to the DB; 2. Include the subordinate RBS spectrum resource usage information, and coordinate the acquired WS spectrum resources to the subordinate RBS; Receiving the reconfiguration command from the DB, and controlling the subordinate RBS to perform corresponding reconfiguration; 4. Feedback configuration update message to the DB, including re-allocation information update after acquiring the WS resource, and configuration update after exiting the WS; 5. Sending the perception to the RBS Measuring the configuration message, including the same-frequency or adjacent-frequency system information of the allocated idle spectrum, sensing the measurement threshold, etc.; 6. Feeding the sensing measurement result to the DB.
- RBS reconfigurable base station
- RBS Reconfiguration Base Station
- the reconfigurable base station RBS can be directly connected to the CCP, and its functions include but are not limited to: 1. Allocating the obtained WS spectrum resource to each wireless link connected thereto; 2. Changing or adjusting parameters of the wireless communication technology, for example, modulation Type, transmit power; 3. Manage and maintain the working spectrum, for example, working frequency and frequency band; 4. Responsible for communication with the central control node; 5. Spectrum sensing measurement function; 6. Perceptual measurement data processing capability.
- the reconfiguration system triggers the reconfiguration of the spectrum resources; the central control node obtains the information required in the reconfiguration decision, and runs the reconfiguration algorithm to make the reconfiguration decision; and delivers the reconfiguration command to the corresponding base station, and the base station unites its subordinates with the perception
- the node of the measurement function performs spectrum sensing on the specified spectrum resource, and if there is unexpected interference or is in the primary user protection band, the feedback sensing result is sent to the upper node; otherwise, the base station and its subordinate node perform the reconfiguration command; after the reconfiguration is completed, the base station
- the reconfiguration performance is fed back layer by layer, and the related nodes perform reconfiguration performance monitoring.
- Step 1 Reconfiguration trigger
- Step 2. Information Acquisition
- Step 3 Reconfiguration Decision
- Step 4 Decision Optimization
- Step 5 Reconfiguration Execution
- Step 6 Reconfiguration Complete
- Step 7, Performance Monitoring Step 6
- the foregoing steps are only processing steps set according to the flow of information interaction, and the foregoing steps may be combined as needed, for example, the reconfiguration triggering step and the information obtaining step are merged into a reconfiguration trigger information obtaining step; Limited to the above.
- the above steps are described separately below. :
- Step 1 Reconfiguration trigger: The reconfiguration system triggers spectrum resource reconfiguration.
- the central control node obtains the primary user on the spectrum of the primary system occupied by the primary user database; the reconfiguration of the central control node on the adjacent area triggers the present The reconfiguration of the central control node; the central control node receives the spectrum resource request of the subordinate node; the spectrum sensing measurement result of the subordinate node indicates that the primary user on the spectrum of the main system occupied by the subordinate node appears.
- Step 2 Information Acquisition: The CCP obtains the information needed in the reconfiguration decision.
- the information to be obtained includes but is not limited to: TVWS spectrum resource information, subordinate base station load status information and/or communication quality status information, and related information of users under each RBS.
- the TVWS spectrum resource information is used to allocate the acquired TVWS spectrum resource to the corresponding base station in the reconfiguration decision;
- the load status information and/or communication quality status information of each base station of the CCP is used to measure the degree of demand of the subordinate base stations for the TVWS frequency resource, and is considered in the reconfiguration decision, such as the RBS1 frequency resource is tight, and the frequency is generated.
- the resource resource request, and the RBS2 with the CCP has previously obtained the TVWS resource, but the load status information reported from it shows that the load is light, and the CCP can re-allocate some TVWS resources under the RBS2 to the RBS1, thereby realizing the inter-base station frequency resource.
- information about users under each RBS is used to measure the priority of the subordinate RBS, and is considered in the reconfiguration decision.
- RBS1 and RBS2 simultaneously apply for TVWS spectrum resources under the CCP, but The resources applied by the CCP can only meet the needs of one of them.
- the priority ranking between RBSs needs to be considered.
- the number of high-level users under RBS1 accounts for 60% of all users, while the high-level users under RBS2.
- the number of users accounts for 30% of all users, so RBS1 has a higher priority than RBS2, and the CCP allocates the TVWS resources to RBS1.
- Step 3 Re-allocation decision: The CCP runs the reconfiguration algorithm based on the triggering reason and the obtained information, makes a reconfiguration decision, and negotiates with the neighboring CCP.
- the central control node runs the corresponding reconfiguration algorithm according to different reconfiguration triggering reasons to make a reconfiguration decision: for example, when the primary user appears, the spectrum resource on the frequency band of the primary user is released; when the subordinate RBS requests the TVWS resource, the CCP The obtained TVWS is configured to the link under the target RBS; the subordinate RBS requests the TVWS resource, but the TVWS spectrum resource is insufficient, and no new TVWS When resources are used, the spectrum resources between their subordinate base stations are optimized; and the adjacent central control nodes negotiate the reconfiguration decision.
- Step 4 Decision optimization: The central control node sends the made spectrum reconfiguration decision forming command to the base station, and the base station unites its subordinate sensing sensing node to perform sensing measurement on the target TVWS spectrum, and feedbacks the sensing result to the upper layer. Optimize the spectrum resource reconfiguration decision made by the upper node.
- the frequency band to be perceived is the designated newly allocated TVWS spectrum resource, and it is judged whether there is any intentional interference, or whether it is within the primary user protection band according to the specified transmission power. If there is interference, the feedback report information is fed back to the upper node (including the central control node and database), including the interference signal, the interfered frequency band, and the location area information. The upper node coordinates the relevant interference sources or redistributes new resources. If it is in the primary user protection band, the measurement information reported to the upper layer indicates the power of the primary user signal detected by the upper layer, and the upper node determines to reduce the transmission power of the cognitive user or redistribute the new resource. This step will be repeated until the sense measurement indicates that the interference is within an acceptable range and is not within the primary user protection band.
- Step 5 Reconfiguration execution: The CCP delivers the reconfiguration decision to form a reconfiguration command to the RBS that needs to be reconfigured.
- the RBS performs specific resource reconfiguration control, including configuring the obtained TVWS resource to the specified link. And specify configuration parameters, such as specifying RBS subordinate reconfiguration time, TVWS frequency, bandwidth, and so on.
- Step 6 Reconfiguration is completed: After the terminal learns the new resource information, the terminal in the connected state performs measurement on the new frequency resource, and after completing the reconfiguration, the layer-by-layer feedback reconfiguration completes the confirmation, and the CCP and the DB update the spectrum resource configuration information. In order to facilitate the subsequent TVWS spectrum resource allocation.
- Step 7 performance monitoring: After the reconfiguration step is completed, after the base station and its subordinate nodes finally complete the reconfiguration confirmation, the relevant nodes should monitor the overall performance of the system, such as reconfiguration of the base station to monitor the performance within its coverage; trigger reconfiguration
- the central control nodes participating in the reconfiguration need to monitor the system performance within their respective control scopes; the database monitors the performance indicators of the main user system.
- the indicators to be monitored include but are not limited to: user throughput, spectrum efficiency, coverage, mobility management characteristics (such as handover success rate, handover delay, etc.), quality indicators (if packet switching (PS, Packet Switching) ) Service download speed, business call delay, voice quality, etc.).
- FIG. 3 is a flowchart of a method for reconfiguring a spectrum resource according to an embodiment of the present invention. As shown in FIG. 3, the method for reconfiguring a spectrum resource in this example includes the following steps: reconfiguration trigger, information acquisition, reconfiguration decision, reconfiguration execution, The details are described below.
- Step 1 Re-trigger trigger: The database informs the central control node of the area where the primary user of the spectrum fl appears, and commands all the links established on the spectrum resource fl to switch to other spectrums, triggering the CCP to make the frequency resource reconfiguration decision. ;
- Step 2 Information acquisition: Since the link using the fl spectrum resource in the CCP needs to be switched to the new frequency resource, the CCP accesses the database, sends a TVWS spectrum resource request to it, and the database feeds back the current TVWS frequency resource information to the CCP. At least: TVWS frequency (such as f2), bandwidth (6MHz), and transmission parameter limits (such as maximum transmit power 100W, antenna pattern, etc.).
- TVWS frequency such as f2
- bandwidth (6MHz) (6MHz
- transmission parameter limits such as maximum transmit power 100W, antenna pattern, etc.
- Step 3 The central control node runs the reconfiguration algorithm.
- the CCP decides to allocate the acquired TVWS spectrum resources to the RBS that needs to be reconfigured, and forwards the transmission parameter restriction information from the DB.
- the CCP will send the reconfiguration decision information to the neighboring CCP2 to negotiate whether there is interference. If there is no interference to CCP2, the reconfiguration decision becomes the final decision if there is interference. It is also necessary to negotiate with CCP2; the CCP finds the RBS that is using the fl spectrum according to the TVWS spectrum resource utilization information of the subordinate RBS stored therein, and sends a reconfiguration command to it, including the frequency phrase for letting it exit.
- Step 4 Reconfiguration execution: After receiving the resource reconfiguration command, the RBS will formulate a specific implementation scheme for the reconfiguration command. For example, which subordinate nodes (such as UE1, UE2 UE15) are involved in this reconfiguration, reconfiguration time control: 2 In the second, the frequency switching is performed by the fl direction.
- the base station sends a spectrum reconfiguration command to the subordinate node that needs to be reconfigured, and performs its own reconfiguration (ie, spectrum resource switching), and the subordinate node performs the new spectrum according to the spectrum reconfiguration command. Access.
- Step 5 Reconfiguration is completed: UE1, UE2 UE15 completes the reconfiguration by fl direction,
- the RBS feedback reconfiguration completes the confirmation, the RBS summarizes the feedback results of the subordinate UEs, and the feedback resource reconfiguration is completed to the CCP1, the CCP1 updates the spectrum resource configuration information, and sends a reconfiguration complete database information update request to the DB, and the DB receives the completion of the CCP1 transmission. After updating the TVWS frequency resource usage information.
- the spectrum resource reconfiguration method of the present example includes the following steps: reconfiguration trigger, information acquisition, reconfiguration decision, decision optimization, and heavy Spectrum resource reconfiguration process with execution and reconfiguration
- Step 1 Reconfiguration trigger: The central control node receives the spectrum resource request of the subordinate node. If the current load status of the RBS is heavy, the traffic exceeding the predetermined threshold exceeds 90% of the system capacity, triggering it to send the TVWS frequency to the central control node. Resource request.
- Step 2 Information acquisition: The CCP accesses the database and sends a TVWS spectrum resource request to it.
- the database feeds back the current TVWS spectrum resource information to the CCP 1, which includes at least: TVWS frequency (eg, fl), bandwidth (6MHz), and transmission on it. Parameter limits (eg maximum transmit power 100W, antenna pattern, etc.).
- Step 3 The central control node runs the reconfiguration algorithm.
- the CCP will decide to allocate the acquired TVWS spectrum resource fl to the RBS that needs to be reconfigured, and forward the transmission parameter restriction information from the DB. .
- CCP1 After making the reconfiguration decision, CCP1 will send the reconfiguration The decision information is given to the neighboring CCP2, and there is no interference with it. If there is no interference to CCP2, the reconfiguration decision becomes the final decision. If there is interference, it needs to negotiate with CCP2.
- Step 4 Decision optimization, the central control node sends the made spectrum reconfiguration decision forming command to the base station, and the RBS cooperates with its subordinate node with perceptual measurement to perform sensing measurement on the target TVWS spectrum fl, such as detecting that there is a higher than that on fl.
- the interference power of the preset threshold value V, the RBS upper layer feedback sensing measurement result indicates to the CCP1 that the assigned fl has an unexpected interference, and the CCP1 feeds back the sensing measurement result to the DB, and after the database receives the sensing measurement result, CCP1 redistributes the TVWS frequency resource G.
- the DB will store such statistical rules as a reference for the subsequent reconfiguration decision, and no longer allocate the frequency resource fl to this CCP1. .
- CCP1 will reacquire the TVWS spectrum resources, repeat the decision optimization process in step four until there is no more unexpected interference in the allocated spectrum resources.
- Step 5 Reconfiguration execution: After receiving the resource reconfiguration command, the RBS will formulate a specific execution plan for the reconfiguration command. For example, which subordinate nodes (such as UE1, UE2 UE15) are involved in this reconfiguration, reconfiguration time control: 2 The spectrum switching from the original licensed spectrum is implemented in seconds, and the RBS preferentially accesses the acquired G spectrum for the subsequently accessed UE.
- subordinate nodes such as UE1, UE2 UE15
- Step 6 Reconfiguration is completed: UE1, UE2 UE15 completes the reconfiguration by fl,
- the RBS feedback reconfiguration completes the confirmation, the RBS summarizes the feedback results of the subordinate UEs, and the feedback resource reconfiguration is completed to the CCP1, the CCP1 updates the spectrum resource configuration information, and sends a reconfiguration complete database information update request to the DB, and the DB receives the heavy weight sent by the CCP1. After the completion of the allocation, the TVWS frequency resource usage information is updated.
- FIG. 5 is a flowchart of a method for reconfiguring a spectrum resource according to Embodiment 3 of the present invention.
- the frequency resource reconfiguration method of the present example includes reconfiguration trigger, information acquisition, reconfiguration decision, reconfiguration execution, reconfiguration. Completion, performance monitoring of the spectrum resource reconfiguration process
- Step 2 Information acquisition: Since the link using the fl spectrum resource in the CCP needs to be switched to the new frequency resource, the CCP accesses the database, sends a TVWS spectrum resource request to it, and the database feeds back the current TVWS frequency resource information to the CCP. At least: TVWS frequency (such as f2), bandwidth (6MHz), and transmission parameter limits (such as maximum transmit power 100W, antenna pattern, etc.).
- TVWS frequency such as f2
- bandwidth (6MHz) (6MHz
- transmission parameter limits such as maximum transmit power 100W, antenna pattern, etc.
- Step 3 The central control node runs the reconfiguration algorithm.
- the CCP will decide to allocate the acquired TVWS spectrum resources to the RBS that needs to be reconfigured, and forward the transmission parameter restriction information from the DB.
- the CCP will send the reconfiguration decision information to the neighboring CCP2 to negotiate whether there is interference. If there is no interference to CCP2, the reconfiguration decision becomes the final decision if there is interference.
- the CCP finds the RBS that is utilizing the fl spectrum according to the TVWS spectrum resource utilization information of the subordinate RBS stored therein, and sends a reconfiguration command to it, including the frequency resource fl that is allowed to exit, And the TVWS spectrum resource G newly assigned to it, and related transmission parameter restriction information.
- Step 4 Reconfiguration execution: After receiving the resource reconfiguration command, the RBS will formulate a specific implementation scheme for the reconfiguration command. For example, which subordinate nodes (such as UE1, UE2 UE15) are involved in this reconfiguration, reconfiguration time control: 2 In the second, the frequency switching is performed by the fl direction.
- the base station sends a spectrum reconfiguration command to the subordinate node that needs to be reconfigured, and performs its own reconfiguration (ie, spectrum resource switching), and the subordinate node performs the new spectrum according to the spectrum reconfiguration command. Access.
- Step 5 Reconfiguration is completed: UE1, UE2 UE15 completes the reconfiguration by fl direction,
- the RBS feedback reconfiguration completes the confirmation, the RBS summarizes the feedback results of the subordinate UEs, and the feedback resource reconfiguration is completed to the CCP1, the CCP1 updates the spectrum resource configuration information, and sends a reconfiguration complete database information update request to the DB, and the DB receives the completion of the CCP1 transmission. After updating TVWS frequency resource usage Information.
- Step 6 Performance monitoring: After the reconfiguration is completed, after the base station and its subordinate nodes finally complete the reconfiguration confirmation, the relevant nodes should monitor the overall performance of the system. For example, the reconfiguration base station should monitor the performance within its coverage; trigger the reconfiguration and The central control nodes participating in the reconfiguration need to monitor the performance of the system within their respective control scopes; the database monitors the performance indicators of the primary user system, if the performance monitoring results indicate that the performance of the reconfiguration system does not reach the expected performance or causes the primary user system If there is a serious interference, the reconfiguration fallback is triggered (that is, it returns to the state before reconfiguration), or its reconfiguration is triggered.
- the reconfiguration base station should monitor the performance within its coverage; trigger the reconfiguration and The central control nodes participating in the reconfiguration need to monitor the performance of the system within their respective control scopes; the database monitors the performance indicators of the primary user system, if the performance monitoring results indicate that the performance of the reconfiguration system does not reach the expected performance or causes the primary user system If there is
- the indicators to be monitored include but are not limited to: user throughput, spectrum efficiency, coverage, mobility management characteristics (such as handover success rate, handover delay, etc.), quality indicators (if PS service download speed, service call) Delay, voice quality, etc.).
- FIG. 6 is a flowchart of a method for reconfiguring a spectrum resource according to Embodiment 4 of the present invention.
- the spectrum resource reconfiguration method of the present example includes reconfiguration triggering, information acquisition, reconfiguration decision, decision optimization, and reconfiguration execution. Spectrum resource reconfiguration process for reconfiguration and performance monitoring
- Step 1 Re-trigger trigger: The database informs the central control node of the area where the primary user of the spectrum fl appears, and commands all the links established on the spectrum resource fl to switch to other spectrums, triggering the CCP to make the frequency resource reconfiguration decision. ;
- Step 2 Information acquisition: Since the link using the fl spectrum resource in the CCP needs to be switched to the new frequency resource, the CCP accesses the database, sends a TVWS spectrum resource request to it, and the database feeds back the current TVWS frequency resource information to the CCP. At least: TVWS frequency (such as f2), bandwidth (6MHz), and transmission parameter limits (such as maximum transmit power 100W, antenna pattern, etc.).
- TVWS frequency such as f2
- bandwidth (6MHz) (6MHz
- transmission parameter limits such as maximum transmit power 100W, antenna pattern, etc.
- Step 3 The central control node runs the reconfiguration algorithm.
- the CCP will decide to allocate the acquired TVWS spectrum resources to the RBS that needs to be reconfigured, and forward the transmission parameter restriction information from the DB.
- the CCP will send the reconfiguration
- the decision information is given to the neighboring CCP2, and there is no interference with it. If there is no interference to CCP2, the reconfiguration decision becomes the final decision. If there is interference, it needs to negotiate with CCP2.
- CCP is based on the subordinates stored in it.
- the RBS TVWS spectrum resource utilization information find out the RBS that is utilizing the fl spectrum, and send a reconfiguration command to it, including the frequency resource fl that is allowed to exit, and the TVWS spectrum resource G newly allocated to it, and the related transmission. Parameter limit information.
- Step 4 Decision optimization: The central control node sends the made spectrum reconfiguration decision forming command to the base station, and the RBS cooperates with its subordinate node with perceptual measurement to perform sensing measurement on the target TVWS spectrum fl, such as detecting that there is a higher than that on fl.
- the interference power of the preset threshold value V, the RBS upper layer feedback sensing measurement result indicates to the CCP1 that the assigned fl has an unexpected interference, and the CCP1 feeds back the sensing measurement result to the DB, and after the database receives the sensing measurement result, CCP1 redistributes the TVWS frequency resource G.
- the DB will store such statistical rules as a reference for the subsequent reconfiguration decision, and no longer allocate the frequency resource fl to the CCP1. .
- CCP1 will reacquire the TVWS spectrum resources, repeat the decision optimization process in step four until there is no more unexpected interference in the allocated spectrum resources.
- Step 5 Reconfiguration execution: After receiving the resource reconfiguration command, the RBS will formulate a specific execution plan for the reconfiguration command. For example, which subordinate nodes (such as UE1, UE2 UE15) are involved in this reconfiguration, reconfiguration time control: 2 In the second, the frequency switching is performed by the fl direction.
- the base station sends a spectrum reconfiguration command to the subordinate node that needs to be reconfigured, and performs its own reconfiguration (ie, spectrum resource switching), and the subordinate node performs the new spectrum according to the spectrum reconfiguration command. Access.
- Step 6 Reconfiguration is completed: UE1, UE2 UE15 completes the reconfiguration by fl,
- the RBS feedback reconfiguration completes the confirmation, the RBS summarizes the feedback results of the subordinate UEs, and the feedback resource reconfiguration is completed to the CCP1, the CCP1 updates the spectrum resource configuration information, and sends a reconfiguration complete database information update request to the DB, and the DB receives the completion of the CCP1 transmission. After updating the TVWS frequency resource usage information.
- Step 7 Performance monitoring: After the reconfiguration is completed, the base station and its subordinate nodes finally complete the reconfiguration confirmation. After that, the relevant nodes should monitor the overall performance of the system. For example, the reconfiguration base station should monitor the performance within its coverage; the central control nodes that trigger reconfiguration and participate in reconfiguration should monitor the system performance within their respective control scopes; Monitor the performance indicators of the primary user system. If the performance monitoring result indicates that the performance of the reconfiguration system does not reach the expected performance or causes serious interference to the primary user system, trigger the reconfiguration fallback (ie, return to the state before reconfiguration). Or trigger its reconfiguration.
- the reconfiguration fallback ie, return to the state before reconfiguration.
- the indicators to be monitored include but are not limited to: user throughput, spectrum efficiency, coverage, mobility management characteristics (such as handover success rate, handover delay, etc.), quality indicators (if PS service download speed, service call) Delay, voice quality, etc.).
- FIG. 7 is a schematic structural diagram of a spectrum resource reconfiguration apparatus according to the present invention.
- the spectrum resource reconfiguration apparatus of the present invention includes a trigger unit 70, a decision unit 71, and a configuration unit 72, where:
- the triggering unit 70 is configured to trigger spectrum resource reconfiguration.
- a decision unit 71 configured to make a spectrum resource reconfiguration decision
- the configuration unit 72 is configured to configure a spectrum resource for the to-be-configured link according to the reconfiguration decision.
- the decision unit 71 makes a spectrum resource reconfiguration decision as:
- the reconfiguration system makes a reconfiguration decision according to different reconfiguration trigger events; specifically:
- the spectrum resource re-allocation is performed by exiting the specified spectrum used; or the spectrum resource reconfiguration is performed to coordinate interference between adjacent network nodes;
- the spectrum resource reconfiguration device of the present invention further includes an acquisition unit (not shown in FIG. 7) connected between the trigger unit 70 and the decision unit 72 for Acquiring information required for spectrum resource reconfiguration decision; the information required to obtain the spectrum resource configuration decision includes at least one of the following information:
- the acquisition unit is not a necessary technical feature for implementing the spectrum resource reconfiguration device of the present invention, but is used to optimize the technical solution of the spectrum resource reconfiguration device of the present invention.
- the triggering unit 70 is further configured to determine whether to perform the system according to the primary user information in the acquired database, or the reconfiguration information of the reconfiguration system on the adjacent area, or the spectrum sensing measurement result of the subordinate node or the spectrum resource reconfiguration request information. Spectrum resource reconfiguration operation.
- the triggering unit 70 is further configured to trigger the spectrum resource when the configured spectrum resource is re-occupied by the primary user, or the resource of the neighboring area is re-paired by the reconfiguration system, or the spectrum resource request of the subordinate network node is received. Configuration.
- the spectrum resource reconfiguration device of the present invention further includes a measurement unit (not shown in FIG. 7) and an adjustment unit (not shown in FIG. 7); wherein: the measurement unit Used to perform perceptual measurement on the configured spectrum of the link;
- an adjusting unit configured to be connected to the configuration unit 72, configured to adjust the reconfiguration decision according to the learned sensing result
- the configuration unit 72 is further configured to reconfigure the spectrum resource for the to-be-configured link according to the adjusted configuration decision.
- the adjusting unit is further configured to perform interference source coordination or redistribute new frequency resource when determining that the link configuring the spectrum resource has unexpected interference;
- the spectrum resource reconfiguration device of the present invention further includes:
- the completion unit after completing the spectrum resource configuration of the link, feeds back the spectrum resource configuration result and updates the spectrum resource configuration data.
- the spectrum resource reconfiguration device of the present invention is based on the spectrum resource reconfiguration device shown in FIG. Also includes:
- the monitoring unit is configured to perform performance monitoring on the link configuring the spectrum resource, including: a reconfiguration system that triggers reconfiguration and/or participates in reconfiguration, monitors system performance in its respective control range, and/or monitors the primary user System performance
- the indicators monitored include at least one of the following:
- the user throughput, the spectrum efficiency, the coverage, the mobility management feature class indicator, and the quality class indicator; wherein the mobility management feature class indicator includes a handover success rate and/or a handover delay; the quality class indicator includes at least the following One: Service download speed, business call delay, voice quality.
- the present invention sets a spectrum resource database to store currently available spectrum resources and used spectrum resources, so that when some links have spectrum resources shortage or spectrum resources are unavailable, the system will be based on the currently available spectrum resources. In this case, the corresponding spectrum resources are allocated for these links, so that the links with tight spectrum resources have resources available, and as many communication services as possible are guaranteed.
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Abstract
本发明公开了一种频谱资源重配方法,包括:触发频谱资源配置后,生成频谱资源配置决策,按所述配置决策为待配置链路配置频谱资源。本发明同时公开了一种实现上述方法的频谱资源重配装置及系统。本发明过设置频谱资源数据库,存储当前可用的频谱资源以及已使用的频谱资源,这样,当某些链路出现频谱资源紧张或频谱资源不可用的情况时,系统将会根据当前可用频谱资源的情况,为这些链路分配相应的频谱资源,从而保证这些频谱资源紧张的链路有资源可用,保证尽可能多的通信业务的开展。本发明的技术方案对频谱资源的使用更合理,能充分利用所有的频谱资源,不会局限于某一特定的频谱资源,使频谱资源的利用最大化。
Description
频谱资源重配方法、 装置及系统 技术领域
本发明涉及频谱资源重配技术, 尤其涉及一种频谱资源重配方法、 装 置及系统。 背景技术
随着无线电技术的不断进步, 各种各样的无线电业务大量涌现, 而无 线电业务所依托的频谱资源却是有限的, 当前频谱资源极为紧张; 而在传 统的固定频谱分配模式下, 频谱资源的利用率并不高。 从某种意义上讲, 这种将频谱资源固定分配给授权系统的分配制度造成了频谱资源极为紧张 的局面。 而认知无线电技术就打破了这种传统意义上的频谱固定分配制度, 其通过将频谱在系统间动态分配, 提高了频谱的利用效率。
随着人们日常通信需求的不断提高, 已经不满足于简单的语音数据通 信, 视频流媒体业务在人们通信生活中的比重不断增加, 这需要更大的带 宽作为支撑, 国际移动电话( IMT, International Mobile Telecom )系统显现 出前所未有的频谱紧张局面, 而对于广播电视系统来讲, 频谱资源在很大 程度上存在着可利用的空间, 利用率偏低, 却无法为 IMT系统所用。 通过 认知无线电技术 IMT系统通过对广播电视系统信息的获取, 伺机占用广电 系统在空间和时间上未使用的频谱资源 ( TVWS , TV White Space ), 从而 提高这部分频谱的利用率, 能大大改善 IMT系统频谱紧张的局面, 同时利 用可靠的功率控制、 主用户发现机制等技术, 保证不对主系统造成干扰。
对于长期演进 ( LTE, Long Term Evolution )技术或者演进的长期演进 ( LTE-A, Long Term Evolution-advanced )技术来说, 目前的中继 Relay技 术炙手可热。 但也存在着不可回避的资源紧张问题, 由于中继 (Relay )节
点的引入, 增加了一段新的链路, 即增加了 Relay节点与基站 eNB之间的 回程链路(backhaul link )。 backhaul link在 LTE/LTE-A中可能是无线的, 如应用于偏远的地区、 临时热点区域的覆盖、 救灾时期、 游牧状态的接入 节点等。 在这些场景下, 由于部署有线的连接成本太高, 或者无法估计其 位置并提前进行有线覆盖, 或者有线通信中断, 都无法通过有线连接来进 行有效覆盖。 而无线链路可以迅速提供服务, 因此, 需要为这部分 backhaul link分配频率资源 , 从而进行无线的连接。
而在上述场景下, 针对无线 backhaul link的资源分配, 目前基本上还 是考虑根据频谱管理组织的规定, 将一部分授权频谱资源分配给 LTE/LTE-A 系统的无线 backhaul link。 由于每个运营商最终所得到的用于 LTE/LTE-A 系统运行的频谱是非常有限的, 这种划分一部分资源给无线 backhaul link的方式势必会对接入链路的容量和服务质量造成极大影响。尽 管经过严格的物理层和高层协议的定义, 可以尽量减少因频谱资源不足造 成的损失, 但这种损失却是不可避免的。 引入认知无线电技术后, 可以为 backhaul link寻找到合适的空闲频谱资源 (如 TVWS ), 从而使其不必在分 享接入链路的授权频谱资源。
图 1为 TVWS频段认知无线电 (CR, Cognitive Radio ) 系统的逻辑架 构示意图, 如图 1 所示, 在相关的研究中, 存在着若干应用场景, 如利用 TVWS频谱资源建立中远距离无线接入链路、 利用 TVWS频谱资源建立短 距离无线接入链路、 Ad-hoc网络在 TVWS频谱上的应用、 多媒体广播多播 业务( MBMS , Multimedia Broadcast Multicast Service )在 TVWS频谱上的 应用以及 backhaul link在 TVWS频谱上的应用等。 在这些场景下, 进行资 源重配决策的节点为中心控制节点 (CCP, Central Control Point )„ CCP主 要负责频谱资源重配的决策, 包括将获取到的来自于数据库 (DB , Data Base ) 中的主用户空闲频谱资源, 协调分配给各基站, 并控制各基站进行
重配。 这里的数据库包含主用户的频谱使用情况信息。 但现有技术中, 并 没有从整体上对 TVWS频段 CR技术的重配进行确定, 而且缺乏对整体流 程中阶段的划分, 及各阶段功能的定义。也就是说, 目前对 TVWS频段 CR 技术尚处于讨论阶段, 并没有成熟的技术可供利用和参考。 发明内容
有鉴于此, 本发明的主要目的在于提供一种频谱资源重配方法、 装置 及系统, 能充分利用系统中各种无线频谱资源, 充分保证无线通信系统中 的资源分配。
为达到上述目的, 本发明的技术方案是这样实现的:
一种频谱资源重配方法, 所述方法包括:
重配系统触发频谱资源重配置后, 做出频谱资源重配置决策, 按照所 述重配置决策为待配置链路配置频谱资源。
优选地, 所述方法还包括:
获取频谱资源重配置决策所需的信息; 其中, 所述获取频谱资源重配 置决策所需的信息包括以下信息的至少一种:
获取当前能使用的频谱资源, 所述待配置的链路的负载信息、 当前占 用的频谱资源信息、 通信质量状况信息、 各用户信息。
优选地, 所述重配系统触发频谱资源重配置为:
所述重配系统根据获取到的数据库中的主用户信息, 或相邻区域上重 配系统的重配置信息, 或下属节点频谱感知测量结果或频谱资源重配置请 求信息, 判断是否进行频谱资源重配置操作。
优选地, 所述重配系统在被配置的频谱资源被主用户重新占用, 或者, 相邻区域的资源重配对所述重配系统造成干扰, 或者, 接收到下属网络节 点的频谱资源请求时, 触发频语资源重配置。
优选地, 所述生成频谱资源重配置决策为:
重配系统根据不同的重配触发事件, 做出重配决策; 包括: 为发出频谱资源申请的网络节点分配频谱资源;
或者, 主用户重新占用频谱资源时, 退出在用的指定频谱;
或者, 主用户重新占用频谱资源时, 退出在用的指定频谱, 进行频谱 资源重配;
或者, 进行频谱资源重配, 协调相邻网络节点间干扰;
或者, 根据网络节点的优先级, 进行频谱资源优化重配。
优选地, 所述方法还包括:
对链路的配置频谱进行感知测量, 并根据获知的感知测量结果对所述 重配置决策进行调整, 并按调整后的重配置决策重新为待配置链路配置频 谱资源。
优选地, 所述根据获知的感知测量结果对所述重配置决策进行调整为: 在确定配置频谱资源的链路存在意外干扰时, 进行干扰源协调, 或重 新分配新的频语资源;
或在确定所述重配系统配置频谱资源的覆盖范围在主用户保护带内 时, 减小发射功率, 或重新分配新的频谱资源。
优选地, 所述方法还包括:
按所述配置决策为待配置链路配置频谱资源后, 接收所述待配置链路 的网络节点对资源重配完成情况的反馈, 进行重配数据更新处理。
优选地, 所述方法还包括:
所述重配系统完成重配确认后, 相关节点对系统整体性能进行监测, 包括:
触发重配和 /或参与重配的重配系统对其各自控制范围内的系统性能进 行监测, 和 /或数据库监测主用户系统性能;
所述性能监测的指标包括以下至少一项:
用户吞吐量、 频谱效率、 覆盖率、 移动性管理特性类指标、 质量类指 标; 其中, 所述移动性管理特性类指标包括切换成功率和 /或切换时延; 所 述质量类指标包括以下至少一项: 业务下载速度、 业务呼叫时延、 语音质 量。
一种频谱资源重配装置, 所述装置包括触发单元、 决策单元和配置单 元, 其中:
触发单元, 用于触发频谱资源重配置;
决策单元, 用于生成频谱资源重配置决策;
配置单元, 用于按照所述重配置决策为待配置链路配置频谱资源。 优选地, 所述频谱资源重配装置还包括:
获取单元, 用于获取频谱资源重配置决策所需的信息, 其中, 所述信 息包括以下信息的至少一种:
获取当前能使用的频谱资源, 所述待配置的链路的负载信息、 当前占 用的频谱资源信息、 通信质量状况信息、 各用户信息。
优选地, 所述触发单元根据获取到的来自数据库的主用户信息, 或相 邻区域上重配系统的重配置信息, 或下属节点频谱感知测量结果或频谱资 源重配置请求信息, 判断是否进行频谱资源重配置操作。
优选地, 所述触发单元还用于, 在被配置的频谱资源被主用户重新占 用, 或相邻区域的资源重配对所述重配系统造成干扰, 或接收到下属网络 节点的频谱资源请求时触发频谱资源配置。
优选地, 所述装置还包括测量单元和调整单元; 其中:
测量单元, 用于对链路的配置频谱进行感知测量;
调整单元, 用于根据获知的感知测量结果对所述重配置决策进行调整; 所述配置单元还用于, 按调整后的重配置决策重新为待配置链路配置 频谱资源。
优选地, 所述调整单元还用于, 在确定配置频谱资源的链路存在意外 干扰时, 进行干扰源协调, 或重新分配新的频语资源;
以及, 在确定配置频谱资源的覆盖范围在主用户保护带内时, 减小发 射功率, 或重新分配新的频语资源。
优选地, 所述装置还包括:
完成单元, 用于完成链路的频谱资源配置后, 反馈频谱资源配置结果, 并进行频谱资源配置数据更新。
优选地, 所述装置还包括:
监测单元, 用于对配置频谱资源的链路进行性能监测, 包括: 触发重 配和 /或参与重配的重配系统对其各自控制范围内的系统性能进行监测, 和 / 或数据库监测主用户系统性能;
所监测的指标包括以下至少一项:
用户吞吐量、 频谱效率、 覆盖率、 移动性管理特性类指标、 质量类指 标; 其中, 所述移动性管理特性类指标包括切换成功率和 /或切换时延; 所 述质量类指标包括以下至少一项: 业务下载速度、 业务呼叫时延、 语音质 量。
一种频语资源重配系统, 包括数据库 DB、 中心控制节点 CCP和重配 基站 RBS , 其中:
数据库 DB, 用于存储主系统频谱资源状态信息, CCP对主系统空闲频 谱资源的使用信息;
中心控制节点 CCP, 与 DB连接, 用于汇聚来自各 RBS的 WS频谱资 源申请,向 DB发出 WS资源分配请求; 将获取到的 WS频谱资源协调分配 给 RBS; 接收来自 DB的频谱资源重配命令, 并控制 RBS执行相应频谱资 源重配; 向 DB反馈配置更新消息; 向 RB S发送感知测量配置消息, 以及 向 DB反馈感知测量结果;
RBS , 与 CCP连接, 用于将 CCP指示的 WS频谱资源配置到各无线链 路; 根据 CCP的指示改变或调整无线通信参数; 执行频谱感知测量。
其中, 所述主系统频谱状态信息包括以下信息的至少一种: 正在使用 的频谱资源信息、 未使用的频谱资源信息和不允许使用的频谱资源信息; 其中, 所述正在使用的频谱资源信息包括以下信息的至少一种: 频点、 带宽、 可能的持续时间、 覆盖范围和隔离带信息;
所述未使用的频谱资源信息包括以下信息的至少一种: 频点、 工作带 宽、 覆盖范围、 可能的持续时间、 允许最大发射功率信息;
所述不允许使用的频谱资源信息包括以下信息的至少一种: 频点、 工 作带宽等信息;
所述 CCP 对主系统空闲频谱资源的使用信息包括以下信息的至少一 种:
CCP使用的空闲频谱的频点、带宽,使用该空闲频谱的 CCP所在位置。 本发明中, 通过设置频谱资源数据库, 存储当前可用的频谱资源以及 已使用的频谱资源, 这样, 当某些链路出现频谱资源紧张或频谱资源不可 用的情况时, 系统将会根据当前可用频谱资源的情况, 为这些链路分配相 应的频谱资源, 从而保证这些频谱资源紧张的链路有资源可用, 保证尽可 能多的通信业务的开展。 本发明的技术方案对频谱资源的使用更合理, 能 充分利用所有的频谱资源, 不会局限于某一特定的频谱资源, 使频谱资源 的利用最大化。 附图说明
图 1为 TVWS频段认知无线电系统的逻辑架构示意图;
图 2为本发明频谱资源重配方法的流程图;
图 3为本发明实施例一频谱资源重配方法的流程图;
图 4为本发明实施例二频谱资源重配方法的流程图;
图 5为本发明实施例三频谱资源重配方法的流程图;
图 6为本发明实施例四频谱资源重配方法的流程图;
图 7为本发明频谱资源重配装置的组成结构示意图。 具体实施方式
为使本发明的目的, 技术方案和优点更加清楚明白, 以下举实施例并 参照附图, 对本发明进一步详细说明。
本发明的频谱资源重配系统可参照图 1所示的结构而理解, 如图 1所 示, 本发明的频谱资源重配系统包括 DB、 CCP和 RBS; 其中:
数据库(DB, Data Base )可由主系统运营商或第三方提供, 数据库包 含主系统频谱资源使用信息; 中心控制节点对主系统空闲频谱资源的使用 信息; 同时数据库中还存储有管理域政策信息。 DB中主要存储有主系统频 谱状态信息, 包括正在使用的频谱资源信息, 未使用的频谱资源信息和不 允许使用的频谱(可能是管理域限制频谱或运营商预留频谱等)资源信息; 正在使用的频谱资源信息包括但不限于: 频点, 带宽, 可能的持续时间, 覆盖范围和隔离带等信息; 未使用的频谱资源信息, 包括但不限于: 频点, 工作带宽、 覆盖范围、 可能的持续时间、 允许最大发射功率等信息; 不允 许使用的频谱资源信息, 包括但不限于: 频点, 工作带宽等信息。 各中心 控制节点对主系统空闲频谱的使用信息包括: 其使用的空闲频谱, 及该中 心控制节点所在位置。 数据库负责为各中心控制节点提供主系统空闲频谱 资源信息。
中心控制节点(CCP, Central Control Point )表示一个系统或运营商的 中心控制节点, 与 DB间可以是固定连接, 也可以是移动连接等; 至少包含 以下功能: 1、 汇聚来自各可重配基站(RBS , Reconfiguration Base Station ) 的 WS频谱资源申请,并向 DB发出 WS资源分配请求; 2、包含下属各 RBS 频谱资源使用信息, 将获取到的 WS频谱资源协调分配给下属 RBS; 3、 接
收来自 DB的重配命令, 并控制下属 RBS执行相应重配; 4、 反馈配置更新 消息给 DB,包括获取 WS资源后重配信息更新,及退出 WS后的配置更新; 5、向 RBS发送感知测量配置消息,其中包括所分配空闲频谱的同频或邻频 系统信息, 感知测量门限等; 6、 反馈感知测量结果给 DB。
可重配基站 RBS可以直接与 CCP相连, 其功能包括但不限于: 1、 将 得到的 WS频谱资源分配到与其相连的各无线链路; 2、 改变或调整无线通 信技术的参数, 例如, 调制类型, 发射功率; 3、 管理和维护工作频谱, 例 如, 工作频点和频段; 4、 负责和中心控制节点的通信; 5、 频谱感知测量 功能; 6、 感知测量数据处理能力。
重配系统触发频谱资源重配; 中心控制节点获取重配决策中所需的信 息, 并运行重配算法, 作出重配决策; 并将重配命令下发到相应基站, 基 站联合其下属具有感知测量功能的节点对指定频谱资源进行频谱感知, 若 存在意外干扰或在主用户保护带内, 则反馈感知测量结果给上层节点; 否 则, 基站与其下属节点执行重配命令; 完成重配后, 基站逐层向上反馈重 配执行情况, 相关节点进行重配性能监测。
图 2为本发明频谱资源重配方法的流程图, 如图 2所示, 本发明的频 谱资源重配整体实现流程包含以下一个或多个步骤,为: 步骤 1、重配触发, 步骤 2、 信息获取, 步骤 3、 重配决策, 步骤 4、 决策优化, 步骤 5、 重配 执行, 步骤 6、 重配完成, 步骤 7、 性能监测。 需要说明的是, 上述各步骤 仅是按照信息交互的流程设置的处理步骤, 上述各步骤可以根据需要进行 合并, 如例如重配触发步骤与信息获取步骤合并成重配触发信息获取步骤; 合并不限于上述方式。 以下分别介绍上述各步骤。:
步骤 1 , 重配触发: 重配系统触发频谱资源重配。
优选以下几种触发方式: 中心控制节点获取到主用户数据库中其所占 用主系统频谱上的主用户出现; 相邻区域上的中心控制节点的重配引发本
中心控制节点的重配; 中心控制节点收到下属节点频谱资源请求; 下属节 点频谱感知测量结果表明其所占用的主系统频谱上的主用户出现。
步骤 2, 信息获取: CCP获取重配决策中所需的信息。
需要获取的信息包括但不限于: TVWS 频谱资源信息、 下属各基站负 载状态信息和 /或通信质量状况信息、 各 RBS下用户的相关信息。
具体的, TVWS频谱资源信息, 用于将获取到的 TVWS频谱资源在重 配决策中分配给相应基站;
具体的, CCP下属各基站负载状态信息和 /或通信质量状况信息, 用于 衡量下属各基站对 TVWS频语资源的需求程度, 并在重配决策中考虑, 如 RBS1频语资源紧张, 发出频语资源请求, 而同 CCP下 RBS2此前获取过 TVWS资源,但从其上报的负载状态信息显示,其负载较轻, CCP可将 RBS2 下的部分 TVWS资源重配给 RBS1 , 从而实现基站间频语资源优化;
具体的, 各 RBS下用户的相关信息, 如用户数, 用户等级等信息, 用 于衡量下属 RBS的优先级,并在重配决策中考虑,如 CCP下 RBS1与 RBS2 同时申请 TVWS频谱资源,但 CCP所申请下来的资源只能满足其中之一的 需求, 此时就需要考虑 RBS间的优先级排序, 如 RBS1下高等级用户的数 目占所有用户的比重为 60%, 而 RBS2下高等级用户的数目占所有用户的 比重为 30%, 因此 RBS1的优先级高于 RBS2 , CCP将该 TVWS资源分配 给 RBS1。
步骤 3 ,重配决策: CCP根据触发原因及获取到的信息,运行重配算法, 作出重配决策, 并与相邻 CCP协商。
中心控制节点根据不同的重配触发原因, 运行相应的重配算法, 作出 重配决策: 如, 主用户出现情况下, 释放主用户出现频段上的频谱资源; 当下属 RBS请求 TVWS资源时, CCP将获取到的 TVWS配置给目标 RBS 下的链路;下属 RBS请求 TVWS资源,但 TVWS频谱资源不足无新 TVWS
资源时, 对其下属基站间频谱资源进行优化; 与相邻中心控制节点就重配 决策进行协商。
步骤 4, 决策优化: 中心控制节点将作出的频谱重配决策形成命令下发 至基站, 基站联合其下属具有感知测量的节点, 对目标 TVWS频谱进行感 知测量, 并向上层反馈感知测量结果, 用于上层节点优化其所作出的频谱 资源重配决策。
所要感知的频段为指定的新分配的 TVWS频谱资源, 判断是否存在意 外干扰, 或根据指定的发射功率判断自身是否在主用户保护带内。 若有干 扰存在, 就反馈测量报告信息给上层节点 (包括中心控制节点及数据库), 包括了干扰信号, 受干扰的频段, 位置区域信息等。 上层节点协调相关干 扰源, 或者重新分配新的资源。 若在主用户保护带内, 则反馈给上层的测 量报告信息中指示其所检测到的主用户信号功率, 并由上层节点决定减小 认知用户的发射功率, 或者重新分配新的资源。 此步骤将反复执行直到感 知测量结果显示干扰在可接受范围内, 且不在主用户保护带范围内。
步骤 5 , 重配执行: CCP 将重配决策形成重配命令下发至需要重配的 RBS , RBS将进行具体的资源重配控制, 包括将获取到的 TVWS资源配置 到指定的链路上, 并规定配置参数, 如指定 RBS下属重配时间、 TVWS频 点、 带宽等。
步骤 6, 重配完成: 终端获知了新的资源信息后, 处于连接态的终端就 新的频语资源进行测量, 完成重配后逐层反馈重配完成确认, CCP 和 DB 更新频谱资源配置信息, 以利于后续的 TVWS频谱资源分配。
步骤 7, 性能监测: 重配完成步骤后, 基站及其下属节点最终完成重配 确认后, 相关节点要对系统整体性能做监测, 如重配基站要监测其覆盖范 围内的性能; 触发重配及参与重配的中心控制节点要对其各自控制范围内 的系统性能进行监测; 数据库监测主用户系统性能指标。
所需监测的指标包括但不限于: 用户吞吐量、 频谱效率、 覆盖率、 移 动性管理特性类指标(如切换成功率、 切换时延等)、 质量类指标(如果分 组交换(PS, Packet Switching ) 业务下载速度、 业务呼叫时延、 语音质量 等)。
需要说明的是, 上述流程是实现本发明频谱资源重配方法的最佳实现 流程, 并非是实现本发明频谱资源重配方法的最基本的步骤。
实施例一
图 3为本发明实施例一频谱资源重配方法的流程图, 如图 3所示, 本 示例的频谱资源重配方法包括以下步骤: 重配触发, 信息获取, 重配决策, 重配执行, 以下详细说明之。
步骤 1 : 重配触发: 数据库通知中心控制节点其所在区域上, 频谱 fl 的主用户出现,命令 CCP下所有建立在频谱资源 fl上链路切换到其他频谱, 触发 CCP做频语资源重配决策;
步骤 2: 信息获取: 由于 CCP下利用 fl频谱资源的链路需要切换到新 的频语资源上, 因此 CCP访问数据库, 向其发出 TVWS频谱资源请求, 数 据库向 CCP反馈当前 TVWS频语资源信息,其中至少包括: TVWS频点(如 f2 ), 带宽 (6MHz ), 其上的发射参数限制 (如最大发射功率 100W, 天线 方向图等)。
步骤 3 : 重配决策: 中心控制节点运行重配算法, 这种场景下, CCP 决定将所获取的 TVWS频谱资源 , 分配给需要重配的 RBS, 并转发来自 于 DB的发射参数限制信息。 作出重配决策后, CCP将发送所述的重配决 策信息给相邻 CCP2, 与其协商是否存在干扰, 如果对 CCP2没有干扰, 则 所述的重配决策就成为了最终的决策, 如果存在干扰还需与 CCP2 进行协 商; CCP根据存储在其中的下属 RBS的 TVWS频谱资源利用情况信息,找 出正在利用 fl频谱的 RBS, 向其发送重配命令, 其中包含让其退出的频语
资源 fl , 以及新分配给它的 TVWS频谱资源 G ,及相关发射参数限制信息。 步骤 4: 重配执行: RBS收到资源重配命令后, 将对重配命令制定具体 执行方案, 如本次重配具体涉及哪些下属节点(如 UE1、 UE2 UE15 ), 重配时间控制: 2秒内实现由 fl向 的频语切换, 基站发送频谱重配命令 给下属需要重配的节点, 并执行自身的重配(即频谱资源切换), 下属节点 按照频谱重配命令执行对新频谱 Ϊ2的接入。
步骤 5:重配完成: UE1、 UE2 UE15完成由 fl向 的重配后, 向
RBS反馈重配完成确认, RBS汇总下属 UE的反馈结果, 并向 CCP1反馈 资源重配完成, CCP1更新频谱资源配置信息, 并向 DB发送重配完成数据 库信息更新请求, DB收到 CCP1发送的完成后更新 TVWS频语资源使用情 况信息。
实施例二
图 4为本发明实施例二频谱资源重配方法的流程图, 如图 4所示, 本 示例的频谱资源重配方法包括以下步骤: 重配触发、 信息获取、 重配决策、 决策优化、 重配执行、 重配完成的频谱资源重配过程
步骤 1 : 重配触发: 中心控制节点收到下属节点频谱资源请求, 如 RBS 当前负载状态为较重, 超过预定的门限值业务量占系统容量 90% , 触发其 向中心控制节点发送 TVWS频语资源请求。
步骤 2: 信息获取: CCP访问数据库, 向其发出 TVWS频谱资源请求, 数据库向 CCP 1反馈当前 TVWS频谱资源信息, 其中至少包括: TVWS频 点(如 fl ), 带宽(6MHz ), 其上的发射参数限制(如最大发射功率 100W, 天线方向图等)。
步骤 3 : 重配决策: 中心控制节点运行重配算法, 这种场景下, CCP 将决定将所获取的 TVWS频谱资源 fl , 分配给需要重配的 RBS , 并转发来 自于 DB的发射参数限制信息。 作出重配决策后, CCP1将发送所述的重配
决策信息给相邻 CCP2 , 与其协商是否存在干扰, 如果对 CCP2没有干扰, 则所述的重配决策就成为了最终的决策,如果存在干扰还需与 CCP2进行协 商。
步骤 4: 决策优化, 中心控制节点将作出的频谱重配决策形成命令下发 至基站, RBS联合其下属具有感知测量的节点,对目标 TVWS频谱 fl进行 感知测量, 如检测出 fl上存在高于预设门限值 V的干扰功率, RBS向上层 反馈感知测量结果向 CCP1指示所分配的 fl上存在意外干扰, CCP1再向 DB反馈该感知测量结果, 数据库收到感知测量结果后, 为所述的 CCP1重 新分配 TVWS频语资源 G, 如果对于这个 CCP1 , 频率 fl上总是存在意外 干扰, DB将把这样的统计规律存储起来作为后续重配决策参考, 不再为这 个 CCP1分配频语资源 fl。 CCP1将重新获取的 TVWS频谱资源 后, 重 复步骤四的决策优化流程, 直到所分配的频谱资源不再存在意外干扰为止。
步骤 5: 重配执行: RBS收到资源重配命令后, 将对重配命令制定具体 执行方案, 如本次重配具体涉及哪些下属节点(如 UE1、 UE2 UE15 ), 重配时间控制: 2秒内实现由原授权频谱向 的频谱切换, 同时对于后续 接入的 UE, RBS优先将其接入到所获取的 G频谱上。
步骤 6:重配完成: UE1、 UE2 UE15完成由 fl向 的重配后, 向
RBS反馈重配完成确认, RBS汇总下属 UE的反馈结果, 并向 CCP1反馈 资源重配完成, CCP1更新频谱资源配置信息, 并向 DB发送重配完成数据 库信息更新请求, DB收到 CCP1发送的重配完成后更新 TVWS频语资源使 用情况信息。
实施例三
图 5为本发明实施例三频谱资源重配方法的流程图, 如图 5所示, 本 示例的频语资源重配方法包括重配触发, 信息获取, 重配决策, 重配执行, 重配完成、 性能监测的频谱资源重配流程
步骤 1 : 重配触发: 数据库通知中心控制节点其所在区域上, 频谱 fl 的主用户出现,命令 CCP下所有建立在频谱资源 fl上链路切换到其他频谱, 触发 CCP做频语资源重配决策;
步骤 2: 信息获取: 由于 CCP下利用 fl频谱资源的链路需要切换到新 的频语资源上, 因此 CCP访问数据库, 向其发出 TVWS频谱资源请求, 数 据库向 CCP反馈当前 TVWS频语资源信息,其中至少包括: TVWS频点(如 f2 ), 带宽 (6MHz ), 其上的发射参数限制 (如最大发射功率 100W, 天线 方向图等)。
步骤 3 : 重配决策: 中心控制节点运行重配算法, 这种场景下, CCP 将决定将所获取的 TVWS频谱资源 , 分配给需要重配的 RBS , 并转发来 自于 DB的发射参数限制信息。 作出重配决策后, CCP将发送所述的重配 决策信息给相邻 CCP2 , 与其协商是否存在干扰, 如果对 CCP2没有干扰, 则所述的重配决策就成为了最终的决策,如果存在干扰还需与 CCP2进行协 商; CCP根据存储在其中的下属 RBS的 TVWS频谱资源利用情况信息,找 出正在利用 fl频谱的 RBS , 向其发送重配命令, 其中包含让其退出的频语 资源 fl , 以及新分配给它的 TVWS频谱资源 G ,及相关发射参数限制信息。
步骤 4: 重配执行: RBS收到资源重配命令后, 将对重配命令制定具体 执行方案, 如本次重配具体涉及哪些下属节点(如 UE1、 UE2 UE15 ), 重配时间控制: 2秒内实现由 fl向 的频语切换, 基站发送频谱重配命令 给下属需要重配的节点, 并执行自身的重配(即频谱资源切换), 下属节点 按照频谱重配命令执行对新频谱 Ϊ2的接入。
步骤 5:重配完成: UE1、 UE2 UE15完成由 fl向 的重配后, 向
RBS反馈重配完成确认, RBS汇总下属 UE的反馈结果, 并向 CCP1反馈 资源重配完成, CCP1更新频谱资源配置信息, 并向 DB发送重配完成数据 库信息更新请求, DB收到 CCP1发送的完成后更新 TVWS频语资源使用情
况信息。
步骤 6: 性能监测: 重配完成后, 基站及其下属节点最终完成重配确认 后, 相关节点要对系统整体性能做监测, 如重配基站要监测其覆盖范围内 的性能; 触发重配及参与重配的中心控制节点要对其各自控制范围内的系 统性能进行监测; 数据库监测主用户系统性能指标, 如果性能监测结果表 明重配系统性能并没有达到事先预计的性能或者对主用户系统造成了严重 干扰, 则触发重配回退(即退回到重配前的状态), 或触发其重新配置。
所需监测的指标包括但不限于: 用户吞吐量、 频谱效率、 覆盖率、 移 动性管理特性类指标(如切换成功率、 切换时延等)、 质量类指标(如果 PS 业务下载速度、 业务呼叫时延、 语音质量等)。
实施例四
图 6为本发明实施例四频谱资源重配方法的流程图, 如图 6所示, 本 示例的频谱资源重配方法包括重配触发, 信息获取, 重配决策, 决策优化, 重配执行, 重配完成、 性能监测的频谱资源重配流程
步骤 1 : 重配触发: 数据库通知中心控制节点其所在区域上, 频谱 fl 的主用户出现,命令 CCP下所有建立在频谱资源 fl上链路切换到其他频谱, 触发 CCP做频语资源重配决策;
步骤 2: 信息获取: 由于 CCP下利用 fl频谱资源的链路需要切换到新 的频语资源上, 因此 CCP访问数据库, 向其发出 TVWS频谱资源请求, 数 据库向 CCP反馈当前 TVWS频语资源信息,其中至少包括: TVWS频点(如 f2 ), 带宽 (6MHz ), 其上的发射参数限制 (如最大发射功率 100W, 天线 方向图等)。
步骤 3 : 重配决策: 中心控制节点运行重配算法, 这种场景下, CCP 将决定将所获取的 TVWS频谱资源 , 分配给需要重配的 RBS, 并转发来 自于 DB的发射参数限制信息。 作出重配决策后, CCP将发送所述的重配
决策信息给相邻 CCP2 , 与其协商是否存在干扰, 如果对 CCP2没有干扰, 则所述的重配决策就成为了最终的决策,如果存在干扰还需与 CCP2进行协 商; CCP根据存储在其中的下属 RBS的 TVWS频谱资源利用情况信息,找 出正在利用 fl频谱的 RBS , 向其发送重配命令, 其中包含让其退出的频语 资源 fl , 以及新分配给它的 TVWS频谱资源 G ,及相关发射参数限制信息。
步骤 4: 决策优化: 中心控制节点将作出的频谱重配决策形成命令下发 至基站, RBS联合其下属具有感知测量的节点,对目标 TVWS频谱 fl进行 感知测量, 如检测出 fl上存在高于预设门限值 V的干扰功率, RBS向上层 反馈感知测量结果向 CCP1指示所分配的 fl上存在意外干扰, CCP1再向 DB反馈该感知测量结果, 数据库收到感知测量结果后, 为所述的 CCP1重 新分配 TVWS频语资源 G , 如果对于这个 CCP1 , 频率 fl上总是存在意外 干扰, DB将把这样的统计规律存储起来作为后续重配决策参考, 不再为这 个 CCP1分配频语资源 fl。 CCP1将重新获取的 TVWS频谱资源 后, 重 复步骤四的决策优化流程, 直到所分配的频谱资源不再存在意外干扰为止。
步骤 5: 重配执行: RBS收到资源重配命令后, 将对重配命令制定具体 执行方案, 如本次重配具体涉及哪些下属节点(如 UE1、 UE2 UE15 ), 重配时间控制: 2秒内实现由 fl向 的频语切换, 基站发送频谱重配命令 给下属需要重配的节点, 并执行自身的重配(即频谱资源切换), 下属节点 按照频谱重配命令执行对新频谱 Ϊ2的接入。
步骤 6:重配完成: UE1、 UE2 UE15完成由 fl向 的重配后, 向
RBS反馈重配完成确认, RBS汇总下属 UE的反馈结果, 并向 CCP1反馈 资源重配完成, CCP1更新频谱资源配置信息, 并向 DB发送重配完成数据 库信息更新请求, DB收到 CCP1发送的完成后更新 TVWS频语资源使用情 况信息。
步骤 7: 性能监测: 重配完成后, 基站及其下属节点最终完成重配确认
后, 相关节点要对系统整体性能做监测, 如重配基站要监测其覆盖范围内 的性能; 触发重配及参与重配的中心控制节点要对其各自控制范围内的系 统性能进行监测; 数据库监测主用户系统性能指标, 如果性能监测结果表 明重配系统性能并没有达到事先预计的性能或者对主用户系统造成了严重 干扰, 则触发重配回退(即退回到重配前的状态), 或触发其重新配置。
所需监测的指标包括但不限于: 用户吞吐量、 频谱效率、 覆盖率、 移 动性管理特性类指标(如切换成功率、 切换时延等)、 质量类指标(如果 PS 业务下载速度、 业务呼叫时延、 语音质量等)。
图 7为本发明频谱资源重配装置的组成结构示意图, 如图 7所示, 本 发明频谱资源重配装置, 包括触发单元 70、 决策单元 71和配置单元 72 , 其中:
触发单元 70, 用于触发频谱资源重配置;
决策单元 71 , 用于做出频谱资源重配置决策;
配置单元 72 , 用于按照所述重配置决策为待配置链路配置频谱资源。 决策单元 71做出频谱资源重配置决策为: 重配系统根据不同的重配触 发事件, 做出重配决策; 具体包括:
为发出频谱资源申请的网络节点分配频谱资源;
或者, 主用户出现时, 退出在用的指定频谱而进行频谱资源重配; 或者, 进行频谱资源重配, 协调相邻网络节点间干扰;
或者, 根据网络节点的优先级, 进行频谱资源优化重配。
在图 7所示频谱资源重配装置的基础上, 本发明的频谱资源重配装置 还包括获取单元(图 7中未示出 ), 其连接于触发单元 70和决策单元 72之 间, 用于获取频谱资源重配置决策所需的信息; 所述获取频谱资源配置决 策所需的信息包括以下信息的至少一种:
获取当前能使用的频谱资源, 所述待配置的链路的负载信息、 当前占
用的频谱资源信息、 通信质量状况信息、 各用户信息。
本领域技术人员应当理解, 获取单元并非实现本发明频谱资源重配装 置的必要技术特征, 而是用于优化本发明频谱资源重配装置的技术方案的。
触发单元 70还用于, 根据获取到的数据库中的主用户信息, 或相邻区 域上重配系统的重配置信息, 或下属节点频谱感知测量结果或频谱资源重 配置请求信息, 判断是否进行系统的频谱资源重配置操作。
上述触发单元 70还用于, 在被配置的频谱资源被主用户重新占用, 或 相邻区域的资源重配对所述重配系统造成干扰, 或接收到下属网络节点的 频谱资源请求时触发频谱资源配置。
在图 7所示频谱资源重配装置的基础上, 本发明的频谱资源重配装置 还包括测量单元(图 7中未示出)和调整单元(图 7中未示出); 其中: 测量单元, 用于对链路的配置频谱进行感知测量;
调整单元, 与上述配置单元 72连接, 用于根据获知的感知测量结果对 所述重配置决策进行调整;
上述配置单元 72还用于, 按调整后的配置决策重新为待配置链路重配 置频谱资源。
上述调整单元还用于, 在确定配置频谱资源的链路存在意外干扰时, 进行干扰源协调, 或重新分配新的频语资源;
以及, 在确定配置频谱资源的覆盖范围在主用户保护带内时, 减小发 射功率, 或重新分配新的频语资源
在图 7所示频谱资源重配装置的基础上, 本发明的频谱资源重配装置 还包括:
完成单元, 用于完成链路的频谱资源配置后, 反馈频谱资源配置结果, 并进行频谱资源配置数据更新。
在图 7所示频谱资源重配装置的基础上, 本发明的频谱资源重配装置
还包括:
监测单元, 用于对配置频谱资源的链路进行性能监测, 包括: 触发重 配和 /或参与重配的重配系统对其各自控制范围内的系统性能进行监测, 和 / 或数据库监测主用户系统性能;
所监测的指标包括以下至少一项:
用户吞吐量、 频谱效率、 覆盖率、 移动性管理特性类指标、 质量类指 标; 其中, 所述移动性管理特性类指标包括切换成功率和 /或切换时延; 所 述质量类指标包括以下至少一项: 业务下载速度、 业务呼叫时延、 语音质 量。
本领域技术人员应当理解, 图 7所示的频谱资源重配装置中的各处理 单元的实现功能可参照前述频谱资源重配方法及系统的相关描述而理解。 图 7所示的频谱资源重配装置中各单元的功能可通过运行于处理器上的程 序而实现, 也可通过具体的逻辑电路而实现。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。
工业实用性
本发明通过设置频谱资源数据库, 存储当前可用的频谱资源以及已使 用的频谱资源, 这样, 当某些链路出现频谱资源紧张或频谱资源不可用的 情况时, 系统将会根据当前可用频谱资源的情况, 为这些链路分配相应的 频谱资源, 从而保证这些频谱资源紧张的链路有资源可用, 保证尽可能多 的通信业务的开展。
Claims
1、 一种频谱资源重配方法, 所述方法包括:
重配系统触发频谱资源重配置后, 做出频谱资源重配置决策, 按照所 述重配置决策为待配置链路配置频谱资源。
2、 根据权利要求 1所述的方法, 其中, 所述方法还包括:
获取频谱资源重配置决策所需的信息; 其中, 所述获取频谱资源重配 置决策所需的信息包括以下信息的至少一种:
获取当前能使用的频谱资源, 所述待配置的链路的负载信息、 当前占 用的频谱资源信息、 通信质量状况信息、 各用户信息。
3、 根据权利要求 1所述的方法, 其中, 所述重配系统触发频谱资源重 配置为:
所述重配系统根据获取到的数据库中的主用户信息, 或相邻区域上重 配系统的重配置信息, 或下属节点频谱感知测量结果或频谱资源重配置请 求信息, 判断是否进行频谱资源重配置操作。
4、 根据权利要求 1所述的方法, 其中, 所述重配系统在被配置的频谱 资源被主用户重新占用, 或者, 相邻区域的资源重配对所述重配系统造成 干扰, 或者, 接收到下属网络节点的频谱资源请求时, 触发频谱资源重配 置。
5、 根据权利要求 1所述的方法, 其中, 所述生成频谱资源重配置决策 为:
重配系统根据不同的重配触发事件, 做出重配决策; 包括:
为发出频谱资源申请的网络节点分配频谱资源;
或者, 主用户重新占用频谱资源时, 退出在用的指定频谱;
或者, 主用户重新占用频谱资源时, 退出在用的指定频谱, 进行频谱 资源重配; 或者, 进行频谱资源重配, 协调相邻网络节点间干扰;
或者, 根据网络节点的优先级, 进行频谱资源优化重配。
6、 根据权利要求 1所述的方法, 其中, 所述方法还包括:
对链路的配置频谱进行感知测量, 并根据获知的感知测量结果对所述 重配置决策进行调整, 并按调整后的重配置决策重新为待配置链路配置频 谱资源。
7、 根据权利要求 6所述的方法, 其中, 所述根据获知的感知测量结果 对所述重配置决策进行调整为:
在确定配置频谱资源的链路存在意外干扰时, 进行干扰源协调, 或重 新分配新的频语资源;
或在确定所述重配系统配置频谱资源的覆盖范围在主用户保护带内 时, 减小发射功率, 或重新分配新的频谱资源。
8、 根据权利要求 1所述的方法, 其中, 所述方法还包括:
按所述配置决策为待配置链路配置频谱资源后, 接收所述待配置链路 的网络节点对资源重配完成情况的反馈, 进行重配数据更新处理。
9、 根据权利要求 1所述的方法, 其中, 所述方法还包括:
所述重配系统完成重配确认后, 相关节点对系统整体性能进行监测, 包括:
触发重配和 /或参与重配的重配系统对其各自控制范围内的系统性能进 行监测, 和 /或数据库监测主用户系统性能;
所述性能监测的指标包括以下至少一项:
用户吞吐量、 频谱效率、 覆盖率、 移动性管理特性类指标、 质量类指 标; 其中, 所述移动性管理特性类指标包括切换成功率和 /或切换时延; 所 述质量类指标包括以下至少一项: 业务下载速度、 业务呼叫时延、 语音质 量。
10、 一种频谱资源重配装置, 所述装置包括触发单元、 决策单元和配 置单元, 其中:
触发单元, 用于触发频谱资源重配置;
决策单元, 用于生成频谱资源重配置决策;
配置单元, 用于按照所述重配置决策为待配置链路配置频谱资源。
11、 根据权利要求 10所述的装置, 其中, 所述频语资源重配装置还包 括:
获取单元, 用于获取频谱资源重配置决策所需的信息, 其中, 所述信 息包括以下信息的至少一种:
获取当前能使用的频谱资源, 所述待配置的链路的负载信息、 当前占 用的频谱资源信息、 通信质量状况信息、 各用户信息。
12、 根据权利要求 10所述的装置, 其中, 所述触发单元根据获取到的 来自数据库的主用户信息, 或相邻区域上重配系统的重配置信息, 或下属 节点频谱感知测量结果或频谱资源重配置请求信息, 判断是否进行频谱资 源重配置操作。
13、 根据权利要求 10所述的装置, 其中, 所述触发单元还用于, 在被 配置的频谱资源被主用户重新占用, 或相邻区域的资源重配对所述重配系 统造成干扰, 或接收到下属网络节点的频谱资源请求时触发频谱资源配置。
14、 根据权利要求 10所述的装置, 其中, 所述装置还包括测量单元和 调整单元; 其中:
测量单元, 用于对链路的配置频谱进行感知测量;
调整单元, 用于根据获知的感知测量结果对所述重配置决策进行调整; 所述配置单元还用于, 按调整后的重配置决策重新为待配置链路配置 频谱资源。
15、 根据权利要求 14所述的装置, 其中, 所述调整单元还用于, 在确 定配置频谱资源的链路存在意外干扰时, 进行干扰源协调, 或重新分配新 的频谱资源;
以及, 在确定配置频谱资源的覆盖范围在主用户保护带内时, 减小发 射功率, 或重新分配新的频语资源。
16、 根据权利要求 10所述的装置, 其中, 所述装置还包括:
完成单元, 用于完成链路的频谱资源配置后, 反馈频谱资源配置结果, 并进行频谱资源配置数据更新。
17、 根据权利要求 10至 16中任一项所述的装置, 其中, 所述装置还 包括:
监测单元, 用于对配置频谱资源的链路进行性能监测, 包括: 触发重 配和 /或参与重配的重配系统对其各自控制范围内的系统性能进行监测, 和 / 或数据库监测主用户系统性能;
所监测的指标包括以下至少一项:
用户吞吐量、 频谱效率、 覆盖率、 移动性管理特性类指标、 质量类指 标; 其中, 所述移动性管理特性类指标包括切换成功率和 /或切换时延; 所 述质量类指标包括以下至少一项: 业务下载速度、 业务呼叫时延、 语音质 量。
18、 一种频语资源重配系统, 包括数据库 DB、 中心控制节点 CCP和 重配基站 RBS, 其中:
数据库 DB, 用于存储主系统频谱资源状态信息, CCP对主系统空闲频 谱资源的使用信息;
中心控制节点 CCP, 与 DB连接, 用于汇聚来自各 RBS的 WS频谱资 源申请,向 DB发出 WS资源分配请求; 将获取到的 WS频谱资源协调分配 给 RBS; 接收来自 DB的频谱资源重配命令, 并控制 RBS执行相应频谱资 源重配; 向 DB反馈配置更新消息; 向 RB S发送感知测量配置消息, 以及 向 DB反馈感知测量结果;
RBS , 与 CCP连接, 用于将 CCP指示的 WS频谱资源配置到各无线链 路; 根据 CCP的指示改变或调整无线通信参数; 执行频谱感知测量。
19、 根据权利要求 18所述的系统, 其中, 所述主系统频谱状态信息包 括以下信息的至少一种: 正在使用的频谱资源信息、 未使用的频谱资源信 息和不允许使用的频谱资源信息;
其中, 所述正在使用的频谱资源信息包括以下信息的至少一种: 频点、 带宽、 可能的持续时间、 覆盖范围和隔离带信息;
所述未使用的频谱资源信息包括以下信息的至少一种: 频点、 工作带 宽、 覆盖范围、 可能的持续时间、 允许最大发射功率信息;
所述不允许使用的频谱资源信息包括以下信息的至少一种: 频点、 工 作带宽等信息;
所述 CCP 对主系统空闲频谱资源的使用信息包括以下信息的至少一 种:
CCP使用的空闲频谱的频点、带宽,使用该空闲频谱的 CCP所在位置。
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