CN102387505B - Resource allocation method and cognitive radio system - Google Patents
Resource allocation method and cognitive radio system Download PDFInfo
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- CN102387505B CN102387505B CN201010275828.XA CN201010275828A CN102387505B CN 102387505 B CN102387505 B CN 102387505B CN 201010275828 A CN201010275828 A CN 201010275828A CN 102387505 B CN102387505 B CN 102387505B
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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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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Abstract
The invention discloses a resource allocation method and system. The method comprises the following steps of: acquiring available television blank channel information by a cognitive radio system; determining the resource allocation of a backhaul link between the base station and an access point by the cognitive radio system; and allocating the resources of the backhaul link by the cognitive radio system according to the available television blank channel information. According to the method and system disclosed by the invention, the capacity and service quality of the backhaul link are guaranteed.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of resource allocation methods and cognitive radio system.
Background technology
For Long Term Evolution (Long Term Evolution, referred to as LTE) or senior Long Term Evolution (Long Term Evolution-Advance, referred to as LTE-A) at present access point have following several: macro cell base station (the enhanced Node Basestation of enhancing, referred to as eNB), relaying (Relay), femtocell base station (Femto NB), microcell base station (Pico NB) and HNB (Home Node Base station), what these access points had can directly be connected, what have is directly linked into gateway (Gate Way, referred to as GW), for the access point that can directly be connected, link between them we be called backhaul (backhaul) link.
May be wireless link under back haul link some scenes in LTE/LTE-A, such as: in remote area, dispose wired link cost too high; The covering of interim hot spot region, is unable to estimate its position and carries out wired covering in advance; Disaster relief period, wire communication is interrupted, and wireless link can provide service rapidly; The access node of nomadic state, cannot carry out wired covering.
Under these scenes above-mentioned, a part of fixed allocation, usually according to the regulation of spectrum management tissue, is used for wireless backhaul link to the frequency spectrum of LTE/LTE-A and connects by wireless backhaul link.But because final the obtained frequency spectrum for LTE/LTE-A of each operator is very limited, this mode will certainly cause damage to the capacity of access link and service quality.
Summary of the invention
Frequency spectrum for the back haul link in LTE/LTE-A in correlation technique is very limited thus can affect the capacity of back haul link and the problem of service quality and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of resource allocation methods and cognitive radio system, to solve the problem.
To achieve these goals, according to an aspect of the present invention, a kind of resource allocation methods is provided.
Resource allocation methods according to the present invention comprises cognitive radio system and obtains available TV blank channel information; Cognitive radio system is determined to distribute the resource of the back haul link between base station and access point; Cognitive radio system, according to available TV blank channel information, is distributed the resource of back haul link.
Further, before cognitive radio system is determined to distribute the resource of back haul link, said method also comprises: cognitive radio system determines to there is authoring system to be accessed, and authoring system wherein to be accessed uses the TV blank channel information of the current use of back haul link.
Further, cognitive radio system is determined to exist authoring system and is comprised one of following: cognitive radio system receives the notification message from the database containing TV blank channel information, and wherein notification message is used for notice and there is authoring system; Cognitive radio system, by self perception, determines to there is authoring system.
Further, before cognitive radio system is determined to distribute the resource of back haul link, said method also comprises: cognitive radio system detects that the quality of service information of wireless link does not meet radio communication requirement.
Further, cognitive radio system obtains available TV blank channel information and comprises: cognitive radio system obtains available TV blank channel information by external resource entity, and wherein external resource entity comprises the database containing blank television spectrum information.
Further, cognitive radio system is according to available TV blank channel information, carry out distribution to the resource of back haul link to comprise: cognitive radio system sends available TV blank channel information to the base station in back haul link, and informing base station distributes resource; Base station, according to available TV blank channel information, is distributed resource; Access point in the notice back haul link of base station carries out optimum configurations; Access point carries out optimum configurations, and sets up the back haul link between base station.
Further, after the resource of cognitive radio system to back haul link is distributed, said method also comprises: cognitive radio system upgrades current TV blank channel information.
Further, in cognitive radio system according to available TV blank channel information, after distributing the resource of back haul link, said method also comprises: judge that whether cognitive radio system is successful to the Resourse Distribute of back haul link; If judged result is no, the mandate frequency spectrum that before the resource of back haul link is turned back to Resourse Distribute by cognitive radio system, back haul link uses, wherein authorizes the frequency spectrum that frequency spectrum carries for back haul link initial power-up.
To achieve these goals, according to another aspect of the present invention, a kind of cognitive radio system is provided.
Cognitive radio system according to the present invention comprises: acquisition module, for obtaining available TV blank channel information; First determination module, distributes the resource of the back haul link between base station and access point for determining; Distribution module, for according to available TV blank channel information, distributes the resource of back haul link.
Further, above-mentioned cognitive radio system also comprises: the second determination module, there is authoring system to be accessed for determining, wherein authoring system uses the TV blank channel information of the current use of back haul link; Detection module, for detecting the quality of service information of wireless link.
Pass through the present invention, TV blank channel information is used for back haul link, thus add the available resources of back haul link, the frequency spectrum solving the back haul link in correlation technique in LTE/LTE-A is very limited thus can affect the capacity of back haul link and the problem of service quality, and then ensure that capacity and the service quality of back haul link.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the application scenarios according to correlation technique;
Fig. 2 is the flow chart of the resource allocation methods according to the embodiment of the present invention;
Fig. 3 is the interaction diagrams of the resource allocation methods (notice adds perceptive mode) according to the preferred embodiment of the present invention one;
Fig. 4 is the interaction diagrams of the resource allocation methods (adding perceptive mode as required) according to the preferred embodiment of the present invention two;
Fig. 5 is the structured flowchart of the cognitive radio system according to the embodiment of the present invention;
Fig. 6 is the structured flowchart of cognitive radio system according to the preferred embodiment of the invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Before the embodiment of the present invention is described, first the noun that the present invention relates to or term are made an explanation.
1, TV data storehouse (TVDB, Television database): it is responsible for data by TV operator or third-party operator and employs, manages and the work of regular maintenance.The content of TV database is television operator local or comprise the service condition of television spectrum (channel) in several local areas, namely frequency spectrum (channel) state 1. used, include but not limited to: channel, bandwidth, the possible duration, D/U requires (R
d/Uthe useful signal expected for television receiver and the power ratio of interference signal), spectral mask, the information such as coverage and isolation strip; 2. untapped frequency spectrum (channel) state, includes but not limited to: channel, the information such as bandwidth of operation, coverage, possible duration.
2, center control nodes (CCP, central control point): 1. it be responsible for the management work to cordless communication network, such as, the management of frequency spectrum resource and distribution, comprising the perception data (coming from BS and AP) according to converging, carrying out data fusion (comprising such as reasoning, judgement), obtaining blank frequency spectrum resource information, and according to come from TVDB about blank and usable spectrum information, finally obtain real blank and available frequency spectrum resource; And be responsible for representing wireless communication system and communicate with TV database, to obtain required TV blank frequency spectrum (TVWS, television white space) 2..Physical connection between center control nodes and TV data storehouse is by wired or wireless connection, and logical transport agreement can adopt such as IP agreement to communicate.
3, base station (BS, base station): BS can directly be connected with CCP, and the function of BS includes but not limited to: the parameter 1. changing or adjust wireless communication technology, such as, modulation type, transmitting power; 2. frequency spectrums of operation is administered and maintained, such as, working frequency points and frequency range; 3. be responsible for and the communicating of center control nodes; 4. there is frequency spectrum perception function; 5. there is perception data disposal ability, such as, according to perception data (coming from the perception data that self perception data and AP report), carry out fusion treatment.
4, access point (AP, access point): AP here can be focus (hot spot), Home eNodeB (home BS), Femto BS, Pico BS, or relaying (relay).AP converges user profile, and carries out communicate (formation back haul link) with BS, by AP, carries out information interaction between user and BS.The coverage of AP, compared with BS, has reduction by a relatively large margin.AP can complete: the parameter 1. changing or adjust wireless communication technology, such as, and modulation type, transmitting power; 2. working frequency points and frequency range is adjusted; 3. complete and user and the two-way communication with BS.
It should be noted that, the content of regarding TV blank channel information includes but not limited to: 1. available channel (containing working frequency points and bandwidth), and note, bandwidth here both can be continuous, also can be discontinuous; 2. coverage (referring to the geographic area that this channel can work, because blank channel always has certain region restriction); 3. the spectrum information of this channel adjacent channel, may include but not limited to: R
d/U(useful signal expected for television receiver and the power ratio of interference signal), transmitting power and spectrum mask; 4. the operational use time of this channel.
It should be noted that, the network element that the cognitive radio system containing cognition wireless power comprises has but is not limited to: CCP, BS and AP.
The invention provides a kind of resource allocation methods.Fig. 2 is the flow chart of the resource allocation methods according to the embodiment of the present invention, as shown in Figure 2, comprises following step S202 to step S206.
Step S202, cognitive radio system obtains available TV blank channel information.
Step S204, cognitive radio system is determined to distribute the resource of the back haul link between base station and access point.
Step S206, cognitive radio system, according to available TV blank channel information, is distributed the resource of back haul link.
In correlation technique, the frequency spectrum of the back haul link in LTE/LTE-A is very limited, thus can affect capacity and the service quality of back haul link.In the embodiment of the present invention, TV blank channel information is used for back haul link, thus adds the available resources of back haul link, and then ensure that capacity and the service quality of back haul link.
It should be noted that, the cognitive radio system (CognitiveRadio System, referred to as CRS) in the embodiment of the present invention is that one possesses cognitive blank frequency spectrum ability, and possesses the wireless communication system of adjustment inherent parameters ability.
Preferably, before cognitive radio system is determined to distribute the resource of back haul link, cognitive radio system determines to there is authoring system to be accessed, and authoring system wherein to be accessed uses the TV blank channel information of the current use of back haul link.
Using in the process of TV blank channel information at back haul link, distribute if former and use the authoring system of this TV blank channel information to prepare access, then this back haul link needs to make a concession this authoring system and preferentially uses, and this preferred embodiment just describes this process of making a concession.That is, this back haul link does not re-use this TV blank channel information, then uses other available TV blank channel information or turn back on the mandate frequency spectrum of back haul link initial power-up.Therefore, this preferred embodiment can ensure the normal use distributing the authoring system using this TV blank channel information, thus improves the utilance of TV blank channel information to greatest extent.
Preferably, cognitive radio system is determined to exist authoring system and is comprised one of following: cognitive radio system receives the notification message from the database containing TV blank channel information, and wherein notification message is used for notice and there is authoring system; Cognitive radio system, by self perception, determines to there is authoring system.
Cognitive radio system in this preferred embodiment determines that the mode that there is authoring system is simple, reliable.It should be noted that, cognitive radio system can also determine by alternate manner the mode that there is authoring system.
Preferably, before cognitive radio system is determined to distribute the resource of back haul link, cognitive radio system detects that the quality of service information of wireless link does not meet radio communication requirement.
This preferred embodiment describes cognitive radio system and initiatively determines to distribute the resource of back haul link.Due to the quality of service information of wireless link or the self reason of other cognitive radio system, this back haul link does not re-use this TV blank channel information, then use other available TV blank channel information, thus the proper communication of wireless link can be ensured.
Preferably, cognitive radio system obtains available TV blank channel information and comprises: cognitive radio system obtains available TV blank channel information by external resource entity, and wherein external resource entity comprises the database containing blank television spectrum information.
It should be noted that, the mode that cognitive radio system obtains available TV blank channel information by external resource entity is as follows:
Advice method, external resource entity notice cognitive radio system is about TV blank channel information;
Perceptive mode, cognitive radio system obtains TV blank channel information by the mode of perception;
On-demand, cognitive radio system is accessed certain resource entity outside as required and is obtained TV blank channel information;
Periodic mode, cognitive radio system and certain resource entity outside periodically information interaction obtain TV blank channel information.
It should be noted that, cognitive radio system can by the way among one or more obtain TV blank channel information.Such as but not limited to:
Advice method adds perceptive mode, namely, when the authorized system of database will or exit, database notification cognitive radio system is about TV blank channel information, cognitive radio system upon receipt of this information, also to carry out perception to corresponding TV blank channel info-channel, to determine blank and available TV blank channel information;
On-demand adds perceptive mode, that is, when cognitive radio system for a certain reason (such as but not limited to, the QoS of communication, the access point of interim increase), when needing extra frequency spectrum resource, accessing TV DB is to obtain TV blank channel information in cognitive radio system active.
But TVDB just containing the use information of authoring system (television system) about television channel, does not contain the information that other television spectrum uses, such as but not limited to, wireless microphone uses television spectrum information.So really available (blank and available) in order to ensure TV blank channel information, cognitive radio system is necessary to notify that subordinate's node (such as base station and access point) carries out frequency spectrum perception, to determine real blank and available TV blank channel information.
Preferably, cognitive radio system, according to available TV blank channel information, is carried out distribution to the resource of back haul link and is comprised: cognitive radio system sends available TV blank channel information to the base station in back haul link, and informing base station distributes resource; Base station, according to available TV blank channel information, is distributed resource; Access point in the notice back haul link of base station carries out optimum configurations; Access point carries out optimum configurations, and sets up the back haul link between base station.
Particularly, the cognitive radio system conscientiously available TV blank channel message notice base station that can will obtain by the following method.Mutual as required, when base station needs TV blank channel information, base station sends the message of frequency spectrum resource request to cognitive radio system, and cognitive radio system receives accessing TV DB after this message, to obtain TV blank channel information; Cognitive radio system sends response message to base station after acquisition TV blank channel information resources, and this message is containing TV blank channel information.Notice is mutual, and when the frequency spectrum resource in TVDB changes, TVDB notifies the information that cognitive radio system regarding spectrum changes; Cognitive radio system reinforms base station corresponding TV blank channel information frequency spectrum information.Cycle is mutual, and TVDB periodically notifies cognitive radio system regarding spectrum information, cognitive radio system also periodically informing base station corresponding TV blank channel information frequency spectrum information.
Base station, according to the TV blank channel information obtained, in conjunction with the service conditions of self, is redistributed frequency spectrum resource.Here may relate to power to control (interference controls), the parameter adjustment of RAT (Radio Access Technology).
Base station notifies that corresponding access point carries out optimum configurations, and power controls (interference controls).When power controls, uplink and downlink all should be considered.
Base station is according to the R of neighboring trace
d/U, transmitting power and spectral mask, and the superfluous limit of the interference of self (maximum allow interference power), consider that base station is to the interference effect of neighboring trace television system respectively, and television system is to the interference effect of neighboring trace wireless communication system (containing base station, access point and corresponding user).When only having that condition all meets both ways, just can obtain base station and the actual available TV blank channel information of access point.
Preferably, after the resource of cognitive radio system to back haul link is distributed, cognitive radio system upgrades current TV blank channel information.
Preferably, in cognitive radio system according to available TV blank channel information, after the resource of back haul link is distributed, judge that whether cognitive radio system is successful to the Resourse Distribute of back haul link; If judged result is no, the mandate frequency spectrum that before the resource of back haul link is turned back to Resourse Distribute by cognitive radio system, back haul link uses, wherein authorizes the frequency spectrum that frequency spectrum carries for back haul link initial power-up.
This preferred embodiment, when there is no available TV blank channel information frequency spectrum resource, or, impact for a certain reason, such as but not limited to the qos requirement of cognitive radio system, when cognitive radio system cannot utilize TV blank channel information resources, when may cause Resourse Distribute failure, now, the mandate frequency spectrum turning back to back haul link carries out work, its normal communication can be ensured.
By above preferred embodiment, base station, by accessing database and perception, obtains blank and available TV blank channel information, and utilizes this TV blank channel information to set up back haul link.There is following technique effect in it:
1. dynamically set up wireless backhaul link, without the need to prior pre-cable laying (also may not knowing the place of cable laying in advance), save man power and material's cost.
2. for wireless backhaul link, it is set up and removes and only can need be controlled by software, adds the flexibility of back haul link.
Be described in detail below in conjunction with the implementation procedure of example to the embodiment of the present invention.
Preferred embodiment one
The detailed process of primary user's protection (notice adds perceptive mode) is shown in Fig. 3.It is interpreted as in detail:
Step S302, safeguards candidate frequency spectrum resource.TVDB provides the initial candidate set of available spectrum resources.This Candidate Set is safeguarded jointly by each network element, CCP converges the perception information from Node B/B S and the mandate business information from TVDB, these information comprehensive, while providing available spectrum resources, generate each BS and can use and the candidate frequency spectrum of blank (channel) collection.
Step S304, TVDB have the information updating (adjustment) about TVWS.
Step S306, TVDB notify the relevant TVWS information of CCP.The content of TVWS includes but not limited to: 1. available channel (containing working frequency points and bandwidth), and note, bandwidth here both can be continuous, also can be discontinuous; 2. coverage (referring to the geographic area that this channel can work, because blank channel always has certain region restriction); 3. the spectrum information of this channel adjacent channel, may include but not limited to: R
d/U(useful signal expected for television receiver and the power ratio of interference signal), transmitting power and spectrum mask; 4. the operational use time of this channel.
Step S308, BS and AP carry out frequency spectrum perception.Here, needing the frequency spectrum of perception both can be whole television spectrum (this preferred embodiment provide be the perception that BS and AP carries out whole television spectrum), also can be the specific television spectrum that CCP notifies BS.CCP is notified that BS carries out specific television spectrum perception, first CCP sends sensing request message (message includes but not limited to need frequency and the band information of perception) to BS, BS responds CCP (sending out request response to CCP), and carries out specific television spectrum perception message to AP transmission.
Step S310, BS and AP carry out perception, and sensing results are reported CCP (AP is reported by BS).
The perception information that step S312, CCP report according to BS and AP, comes from the information of the TVWS of TVDB, and the spectrum requirement of self, determine blank and available TVWS channel (channel can be, also can be multiple, can have be continuous print also can be discontinuous).CCP can use and include but not limited to that game theoretic method obtains blank and available TVWS channel.
Step S314, CCP initiate reprovision.CCP, after obtaining blank and available TVWS channel, sends reprovision instruction to BS.This instruction includes but not limited to frequency and channel (bandwidth).
Step S316, BS send reprovision instruction to AP.This instruction includes but not limited to frequency and channel (bandwidth).
Step S318, BS carry out frequency spectrum switching.BS is switched on new TVWS.
Step S320, AP are being switched to after on new TVWS, access BS.
Step S322, BS are to CCP report resource reprovision situation.Here the success of BS and/or AP reprovision is comprised, the unsuccessful two kinds of situations of BS and/or AP reprovision.Here reprovision success is supposed.
Step S324, CCP send Resourse Distribute adjustment response to BS, confirm that CCP has known BS reprovision situation.
Step S326, CCP upgrade TVWS resource using information.
Preferred embodiment two
The detailed process of primary user's protection (adding perceptive mode as required) is shown in Fig. 4.It is interpreted as in detail:
Step S402, safeguards candidate frequency spectrum resource.TVDB provides the initial candidate set of available spectrum resources.This Candidate Set is safeguarded jointly by each network element, CCP converges the perception information from Node B/BS and the mandate business information from TVDB, these information comprehensive, while providing available spectrum resources, generate each BS and can use and the candidate frequency spectrum of blank (channel) collection.
Step S404, CCP send TVWS frequency spectrum resource request message to TVDB.When CCP for a certain reason (such as but not limited to, the QoS of communication, the interim AP increased), when needing extra frequency spectrum resource, CCP initiatively accessing TV DB to obtain TVWS information.
Step S406, TVDB respond the relevant TVWS information of CCP.The content of TVWS includes but not limited to: 1. available channel (containing working frequency points and bandwidth), and note, bandwidth here both can be continuous, also can be discontinuous; 2. coverage (referring to the geographic area that this channel can work, because blank channel always has certain region restriction); 3. the spectrum information of this channel adjacent channel, may include but not limited to: R
d/U(useful signal expected for television receiver and the power ratio of interference signal), transmitting power and spectrum mask; 4. the operational use time of this channel.When TVDB has the information updating about TVWS, perform this step.
Step S408, BS and AP carry out frequency spectrum perception.Here, needing the frequency spectrum of perception both can be whole television spectrum (this preferred embodiment two provide be the perception that BS and AP carries out whole television spectrum), also can be the specific television spectrum that CCP notifies BS.CCP is notified that BS carries out specific television spectrum perception, first CCP sends sensing request message (message includes but not limited to need frequency and the band information of perception) to BS, BS responds CCP (sending out request response to CCP), and carries out specific television spectrum perception message to AP transmission.
Step S410, BS and AP carry out perception, and sensing results are reported CCP (AP is reported by BS).
The perception information that step S412, CCP report according to BS and AP, comes from the information of the TVWS of TVDB, and the spectrum requirement of self, determine blank and available TVWS channel (channel can be, also can be multiple, can have be continuous print also can be discontinuous).CCP can use and include but not limited to that game theoretic method obtains blank and available TVWS channel.
Step S414, CCP initiate reprovision.CCP, after obtaining blank and available TVWS channel, sends reprovision instruction to BS.This instruction includes but not limited to frequency and channel (bandwidth).
Step S416, BS send reprovision instruction to AP.This instruction includes but not limited to frequency and channel (bandwidth).
Step S418, BS carry out frequency spectrum switching.BS is switched on new TVWS.
Step S420, AP are being switched to after on new TVWS, access BS.
Step S422, BS are to CCP report resource reprovision situation.Here the success of BS and/or AP reprovision is comprised, the unsuccessful two kinds of situations of BS and/or AP reprovision.Here reprovision success is supposed.
Step S424, CCP send Resourse Distribute adjustment response to BS, confirm that CCP has known BS reprovision situation.
Step S426, CCP upgrade TVWS resource using information.
It should be noted that, Fig. 3, Fig. 4 only describe TVDB and notify the situation that CCP changes about TVWS can also have the existence of following situation:
CCP has found the change of TVWS, and wherein has and be connected for BS with AP, and first send notice, all connections of notice BS and AP return the link of original work, and then BS walks the flow process of resource bid more again;
CCP knows the connection that the TVWS of change uses, and that preserves according to it uses information, for resource is redistributed in affected connection about this connection and TVWS.
These situations are all applicable to this patent, and its basic procedure relates to above, no longer repeats here.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Embodiments provide a kind of cognitive radio system, this cognitive radio system may be used for realizing above-mentioned resource allocation methods.Fig. 5 is the structured flowchart of the cognitive radio system according to the embodiment of the present invention, comprises acquisition module 52, the first determination module 54 and distribution module 56.Below its structure is described in detail.
Acquisition module 52, for obtaining available TV blank channel information; First determination module 54, distributes the resource of the back haul link between base station and access point for determining; Distribution module 56, is connected to acquisition module 52 and the first determination module 54, for the available TV blank channel information obtained according to acquisition module 52, distributes the resource of the back haul link that the first determination module 54 is determined.
Fig. 6 is the structured flowchart of cognitive radio system according to the preferred embodiment of the invention.
Preferably, above-mentioned cognitive radio system also comprises the second determination module 62 and detection module 64.Below its structure is described in detail.
, there is authoring system to be accessed for determining in the second determination module 62, wherein authoring system uses the TV blank channel information of the current use of back haul link.Detection module 64, for detecting the quality of service information of wireless link.
It should be noted that, the cognitive radio system described in device embodiment corresponds to above-mentioned embodiment of the method, and its concrete implementation procedure carried out detailed description in embodiment of the method, did not repeat them here.
In sum, according to the abovementioned embodiments of the present invention, a kind of resource allocation methods and cognitive radio system is provided.By TV blank channel information is used for back haul link, thus add the available resources of back haul link, the frequency spectrum solving the back haul link in correlation technique in LTE/LTE-A is very limited thus can affect the capacity of back haul link and the problem of service quality, and then ensure that capacity and the service quality of back haul link.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a resource allocation methods, is characterized in that, comprising:
Cognitive radio system obtains available TV blank channel information;
Described cognitive radio system is determined to distribute the resource of the back haul link between base station and access point;
Described cognitive radio system, according to described available TV blank channel information, is distributed the resource of described back haul link;
Wherein, before described cognitive radio system is determined to distribute the resource of described back haul link, described method also comprises:
Described cognitive radio system determines to there is authoring system to be accessed, and wherein said authoring system to be accessed uses the TV blank channel information of the current use of described back haul link.
2. method according to claim 1, is characterized in that, described cognitive radio system is determined to exist described authoring system and comprised one of following:
Described cognitive radio system receives the notification message from the database containing TV blank channel information, and wherein said notification message is used for notice and there is described authoring system;
Described cognitive radio system, by self perception, determines to there is described authoring system.
3. method according to claim 1, it is characterized in that, before described cognitive radio system is determined to distribute the resource of described back haul link, described method also comprises: described cognitive radio system detects that the quality of service information of described back haul link does not meet radio communication requirement.
4. method according to claim 1, is characterized in that, described cognitive radio system obtains described available TV blank channel information and comprises:
Described cognitive radio system obtains described available TV blank channel information by external resource entity, and wherein said external resource entity comprises the database containing blank television spectrum information.
5. method according to claim 1, is characterized in that, described cognitive radio system, according to described available TV blank channel information, is carried out distribution to the resource of described back haul link and comprised:
Described cognitive radio system sends described available TV blank channel information to the base station in described back haul link, and notifies that described base station is distributed resource;
Described base station, according to described available TV blank channel information, is distributed resource;
Described base station notifies that the access point in described back haul link carries out optimum configurations;
Described access point carries out optimum configurations, and sets up the described back haul link between described base station.
6. method according to any one of claim 1 to 5, is characterized in that, after the resource of described cognitive radio system to described back haul link is distributed, described method also comprises:
Described cognitive radio system upgrades current TV blank channel information.
7. method according to any one of claim 1 to 5, is characterized in that, in described cognitive radio system according to described available TV blank channel information, after distributing the resource of described back haul link, described method also comprises:
Judge that whether described cognitive radio system is successful to the Resourse Distribute of described back haul link;
If judged result is no, the described cognitive radio system mandate frequency spectrum that before the resource of described back haul link is turned back to described Resourse Distribute, described back haul link uses, the frequency spectrum that wherein said mandate frequency spectrum carries for described back haul link initial power-up.
8. a cognitive radio system, is characterized in that, comprising:
Acquisition module, for obtaining available TV blank channel information;
First determination module, distributes the resource of the back haul link between base station and access point for determining;
Distribution module, for according to described available TV blank channel information, distributes the resource of described back haul link; Wherein, also comprise:
, there is authoring system to be accessed for determining in the second determination module, wherein said authoring system uses the TV blank channel information of the current use of described back haul link;
Detection module, for detecting the quality of service information of described back haul link.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010275828.XA CN102387505B (en) | 2010-09-03 | 2010-09-03 | Resource allocation method and cognitive radio system |
| PCT/CN2010/078652 WO2012027927A1 (en) | 2010-09-03 | 2010-11-11 | Resource allocation method and cognitive radio system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN104285461B (en) * | 2012-04-27 | 2018-09-21 | 日本电气株式会社 | The method of frequency used is shared in control device, radio station, radio terminal and control |
| CN103428638B (en) * | 2012-05-22 | 2016-11-23 | 华为技术有限公司 | The application method of frequency spectrum, Apparatus and system |
| CN103581920B (en) * | 2012-08-10 | 2018-09-07 | 中兴通讯股份有限公司 | Based on the cognitive radio system antenna parameter method of adjustment coexisted and device |
| CN103686887B (en) * | 2012-09-11 | 2017-09-12 | 华为技术有限公司 | A kind of methods, devices and systems of frequency spectrum switching |
| CN103037379A (en) * | 2012-12-05 | 2013-04-10 | 北京邮电大学 | Frequency spectrum polymerization method assisted by time division long term evolution (TD-LTE) Femtocell network database |
| CN104125576B (en) * | 2013-04-25 | 2018-01-09 | 华为技术有限公司 | Spectrum policy method of adjustment and device under control and bearing separation structure |
| CN104796905A (en) * | 2014-01-17 | 2015-07-22 | 普天信息技术有限公司 | Important signaling and high priority service transmission method and device |
| CN105992398B (en) * | 2015-03-05 | 2020-02-18 | 电信科学技术研究院 | Communication system, communication network, communication equipment and communication method |
| CN106060833A (en) * | 2016-07-19 | 2016-10-26 | 宽兆科技(深圳)有限公司 | Cognitive radio-based dynamic multi-band LTE base station system |
| CN108599883A (en) * | 2018-04-13 | 2018-09-28 | 东华大学 | A kind of white frequency spectrum dynamic access of TV and radio data transmission method |
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| IEEE 802.22: An Introduction to the First Wireless Standard based on Cognitive Radios;Carlos Cordeiro等;《JOURNAL OF COMMUNICATIONS》;20060430;第1卷(第1期);第38-47页 * |
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