CN105792374A - Small cell frequency resource allocation method and device - Google Patents
Small cell frequency resource allocation method and device Download PDFInfo
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- CN105792374A CN105792374A CN201410827361.3A CN201410827361A CN105792374A CN 105792374 A CN105792374 A CN 105792374A CN 201410827361 A CN201410827361 A CN 201410827361A CN 105792374 A CN105792374 A CN 105792374A
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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
Abstract
The invention provides a small cell frequency resource allocation method and device. The method comprises the steps of obtaining specified information of a neighbor cell corresponding to a specified cell when the specified cell is converted from a closed state into an open state, wherein the specified information is used for reflecting the interference condition of each neighbor cell to the specified cell; and allocating frequency resources of the specified small cell according to the specified information. By adopting the small cell frequency resource allocation method and device provided by the invention, the problem in a super dense network in the related art that when a large number of small cells are deployed, the interference among the small cells are too strong to reduce the overall performance of the network is solved, the resource utilization rate of the small cells is improved, and thus the overall performance of the network is improved.
Description
Technical field
The present invention relates to the communications field, in particular to distribution method and the device of a kind of small-cell frequency resource.
Background technology
Heterogeneous network (HeterogeneousNetwork, referred to as HetNet) refer at original macro station NodeB (MacroNodeB, referred to as MNB) with servicing, the macrocellular network that user is formed adds low power base station (LowPowerNodeB, referred to as LNB), LNB includes: Micro, Pico and Femto, user according to self-position, carries out the network that selects with receiving the parameter adaptive such as power of two base station signals in accessing MNB and LNB.MNB and LNB can serve as the serving BS of user, and due to LNB can supplementing as MNB, share the burden of MNB, fill up the coverage hole of MNB, heterogeneous network often has higher capacity and better coverage effect.LTE/LTE-AHetNet and HSPAHetNet has gone through comparatively ripe discussion, and has had a lot of quite ripe achievement in research.And at present, the super-intensive network (UltraDenseNetwork, referred to as UDN) in 5G technology is exactly further enhancing of HetNet.
Super-intensive network design refers to arranges substantial amounts of small-cell (Microcell) in the scope of macrocell, the quantity of small-cell can reach the rank of hundreds of LNB within the scope of a MNB under normal circumstances, UDN will greatly promote the capacity of whole network, and owing to the average emitted power of base station diminishes significantly, the capacity of each base station and before homogeneous network remain basically stable, so energy utilization rate will promote greatly in UDN.UDN also will well ensure all standing of coverage simultaneously, essentially without occurring covering dead angle.Based on the above advantage, UDN is confirmed as one of key technology of 5G technology.
But, in UDN, substantial amounts of small-cell is deployed in macrocell, and therefore the interference problem between adjacent cell also can highlight.
In LTE/LTE-AHetNet and HSPAHetNet, the quantity of small-cell be often in each MNB several to dozens of, the spacing of LNB is relatively big, at this moment due to the restriction of LNB transmitting power between neighbor cell, does not result in and comparatively significantly disturbs.
But when small-cell is disposed in a large number, it would be possible to reaching to have in each MNB hundreds of LNB, now the spacing of LNB will significantly reduce.Now small-cell is essentially all and is close to small-cell, even there is also the border extruding between small-cell, and namely at boundary, the down-bound pilot frequency signal intensity of multiple LNB is all better than the down-bound pilot frequency signal intensity of MNB.Now, if the frequency resource each small-cell not used reasonably is distributed, so in small-cell, neighbor cell will be produced very strong uplink interference by user, and this intra-cell users also can be caused very strong descending interference by adjacent cell simultaneously, so will cause the decline of overall performance of network.
For in correlation technique super-intensive network when small-cell is disposed in a large number, the interference between small-cell causes very by force the problem that overall performance of network declines, and not yet proposes effective solution at present.
Summary of the invention
Present invention is primarily targeted at the distribution method and device that provide a kind of small-cell frequency resource, at least to solve in correlation technique super-intensive network when small-cell is disposed in a large number, the interference between small-cell causes very by force the problem that overall performance of network declines.
According to an aspect of the present invention, provide the distribution method of a kind of small-cell frequency resource, including: when specifying small-cell to be converted to opening by closed mode, obtain the appointment information of the adjacent area corresponding with described appointment small-cell, wherein, described appointment information is for reflecting each described adjacent area disturbed condition to described appointment small-cell；The frequency resource of described appointment small-cell is distributed according to described appointment information.
Further, the appointment information obtaining the adjacent area corresponding with described appointment small-cell includes: obtain the information for indicating described adjacent area on off state；Obtain described appointment small-cell and be in the RSRP value of described adjacent area of opening relative to each；The frequency resource obtaining all described adjacent area being in opening takies the information of situation.
Further, the frequency resource distributing described appointment small-cell according to described appointment information includes: when the instruction of described frequency resource occupied information exists unappropriated described frequency resource block, using the unappropriated described frequency resource block first frequency resource as described appointment small-cell, wherein, described first frequency resource is the exclusive frequency resource of described appointment small-cell.
Further, the frequency resource distributing described appointment small-cell according to described appointment information includes: when the instruction of described frequency resource occupied information is absent from unappropriated described frequency resource block, one or more adjacent areas with second frequency resource are selected to be defined as first object adjacent area, wherein, described second frequency resource is the shared frequencies resource of described first object adjacent area；When the RSRP value of whole adjacent areas is higher than predetermined threshold in described first object adjacent area, sending the first request message to center control nodes, wherein, described first request message is used for indicating described first object adjacent area to discharge described second frequency resource；And receive in response to the described first response message asking message, wherein, described response message is for indicating described center control nodes using the described second frequency resource described first frequency resource as described appointment small-cell；Or, when in described first object adjacent area, the RSRP value of part adjacent area is higher than predetermined threshold, sending the second request message to center control nodes, wherein, described second request message is used for indicating described appointment small-cell and described first object adjacent area to share described second frequency resource.
Further, the frequency resource distributing described appointment small-cell according to described appointment information includes: be absent from unappropriated described frequency resource block in the instruction of described frequency resource occupied information, and when not there is described second frequency resource of described first object adjacent area, select the adjacent area that RSRP value is minimum as the second target adjacent area from the adjacent area of described appointment small-cell；The 3rd request message is sent to described center control nodes, wherein, the frequency resource that described 3rd request message shares described second target for asking described appointment small-cell and described second target adjacent area, and using this frequency resource the 3rd frequency resource as described appointment small-cell Yu described second target adjacent area, wherein, described 3rd frequency resource is the frequency resource that described appointment small-cell is exclusive with described second target adjacent area.
Further, described method also includes: when described appointment small-cell is converted to close off state by opening, discharge the frequency resource that described appointment small-cell takies.
According to another aspect of the present invention, provide the distributor of a kind of small-cell frequency resource, including: acquisition module, for when specifying small-cell to be converted to opening by closed mode, obtain the appointment information of the adjacent area corresponding with described appointment small-cell, wherein, described appointment information is for reflecting each described adjacent area disturbed condition to described appointment small-cell；Distribution module, for distributing the frequency resource of described appointment small-cell according to described appointment information.
Further, described acquisition module includes: the first acquiring unit, for obtaining the information for indicating described adjacent area on off state；Second acquisition unit, is in the RSRP value of described adjacent area of opening for obtaining described appointment small-cell relative to each；3rd acquiring unit, the frequency resource for obtaining all described adjacent area being in opening takies the information of situation.
Further, described distribution module comprises determining that unit, for when there is unappropriated described frequency resource block in the instruction of described frequency resource occupied information, unappropriated described frequency resource block is defined as the first frequency resource of described appointment small-cell, wherein, described first frequency resource is the exclusive frequency resource of described appointment small-cell.
Further, described distribution module includes: select unit, for when the instruction of described frequency resource occupied information is absent from unappropriated described frequency resource block, select one or more adjacent areas with second frequency resource as first object adjacent area, wherein, described second frequency resource is the shared frequencies resource of described first object adjacent area；First transmitting element, for adjacent areas whole in described first object adjacent area RSRP value higher than predetermined threshold time, sending the first request message to center control nodes, wherein, described first request message is used for indicating described first object adjacent area to discharge described second frequency resource；Receiving unit, for receiving in response to the described first response message asking message, wherein, described response message is for indicating described center control nodes using the described second frequency resource described first frequency resource as described appointment small-cell；Or, second transmitting element, during for the RSRP value of part adjacent area in described first object adjacent area higher than predetermined threshold, the second request message is sent to center control nodes, wherein, described second request message is used for indicating described appointment small-cell and described first object adjacent area to share described second frequency resource.
Further, described distribution module includes: second selects unit, for being absent from unappropriated described frequency resource block in the instruction of described frequency resource occupied information, and when not there is described second frequency resource of described first object adjacent area, select the adjacent area that RSRP value is minimum as the second target adjacent area from the adjacent area of described appointment small-cell；3rd transmitting element, for sending the 3rd request message to described center control nodes, wherein, the frequency resource that described 3rd request message shares described second target for asking described appointment small-cell and described second target adjacent area, and using this frequency resource the 3rd frequency resource as described appointment small-cell Yu described second target adjacent area, wherein, described 3rd frequency resource is the frequency resource that described appointment small-cell is exclusive with described second target adjacent area.
Pass through the present invention, adopt when specifying small-cell to be converted to opening by closed mode, the mode of the frequency resource of this appointment small-cell is distributed according to the appointment information of the adjacent area corresponding with this appointment small-cell, solve in correlation technique super-intensive network when small-cell is disposed in a large number, interference between small-cell causes very by force the problem that overall performance of network declines, improve the resource utilization of small-cell, and then improve the overall performance of network.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the distribution method flow chart of small-cell frequency resource according to embodiments of the present invention；
Fig. 2 is the distributor structured flowchart of small-cell frequency resource according to embodiments of the present invention；
Fig. 3 is the optional structured flowchart one of distributor of the frequency resource of small-cell according to embodiments of the present invention；
Fig. 4 is the optional structured flowchart two of distributor of the frequency resource of small-cell according to embodiments of the present invention；
Fig. 5 is the optional structured flowchart three of distributor of the frequency resource of small-cell according to embodiments of the present invention；
Fig. 6 is the optional structured flowchart four of distributor of the frequency resource of small-cell according to embodiments of the present invention；
Fig. 7 is small-cell distributed architecture schematic diagram in the UDN network according to alternative embodiment of the present invention；
Fig. 8 is on off state schematic diagram in small-cell in the UDN according to alternative embodiment of the present invention；
Fig. 9 is the method flow diagram one obtaining feedback switch status information and frequency band occupied information according to alternative embodiment of the present invention；
Figure 10 is the method flow diagram two obtaining feedback switch status information and frequency band occupied information according to alternative embodiment of the present invention；
Figure 11 is the application method flow chart of the frequency resource according to alternative embodiment of the present invention；
Figure 12 takies situation schematic diagram according to alternative embodiment small-cell of the present invention frequency resource.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Present embodiments providing the distribution method of a kind of small-cell frequency resource, Fig. 1 is the distribution method flow chart of small-cell frequency resource according to embodiments of the present invention, as it is shown in figure 1, the step of the method includes:
Step S102: when specifying small-cell to be converted to opening by closed mode, obtains the appointment information of the adjacent area corresponding with specifying small-cell；
Wherein, it is intended that information is for reflecting each adjacent area disturbed condition to specifying small-cell；
Step S104: specify the frequency resource of small-cell according to the information distribution of appointment.
Pass through the present embodiment, adopt when specifying small-cell to be converted to opening by closed mode, the mode of the frequency resource of this appointment small-cell is distributed according to the appointment information of the adjacent area corresponding with this appointment small-cell, solve in correlation technique super-intensive network when small-cell is disposed in a large number, interference between small-cell causes very by force the problem that overall performance of network declines, improve the resource utilization of small-cell, and then improve the overall performance of network.
The mode of the appointment information obtaining the adjacent area corresponding with specifying small-cell for relating in step S102, has multiple in the present embodiment, wherein, can be achieved in that in an optional embodiment of the present embodiment
Step S11: obtain the information for indicating adjacent area on off state；
Wherein, by switching-state information, the adjacent area being in open state is got；
Step S12: obtain and specify small-cell to be in the RSRP value of adjacent area of opening relative to each；
Wherein, all RSRP values got are ranked up；
Step S13: the frequency resource obtaining all adjacent areas being in opening takies the information of situation.
Wherein, this frequency resource takies situation and is used to indicate whether have unappropriated frequency resource block.
The mode of the frequency resource specifying small-cell according to the distribution of appointment information for relating in the present embodiment, the method for salary distribution in another optional embodiment medium frequency resource of this alternative embodiment can be achieved in that
Mode one: when the instruction of frequency resource occupied information exists unappropriated frequency resource block, using unappropriated frequency resource block as the first frequency resource specifying small-cell, wherein, first frequency resource is the exclusive frequency resource specifying small-cell.
Mode two: when the instruction of frequency resource occupied information is absent from unappropriated frequency resource block, selecting one or more adjacent areas with second frequency resource to be defined as first object adjacent area, wherein, second frequency resource is the shared frequencies resource of first object adjacent area；
When the RSRP value of whole adjacent areas is higher than predetermined threshold in first object adjacent area, sending the first request message to center control nodes, wherein, the first request message is used for indicating first object adjacent area release second frequency resource；And receive in response to first ask message response message, wherein, response message for Deictic Center control node using second frequency resource as specify small-cell first frequency resource；Or,
When the RSRP value of part adjacent area is higher than predetermined threshold in first object adjacent area, sending the second request message to center control nodes, wherein, the second request message is used for indicating appointment small-cell to share second frequency resource with first object adjacent area.
Mode three: be absent from unappropriated frequency resource block and when not having second frequency resource of first object adjacent area in the instruction of frequency resource occupied information, selects the adjacent area that RSRP value is minimum as the second target adjacent area from the adjacent area specifying small-cell；
The 3rd request message is sent to center control nodes, wherein, 3rd request message is for asking to specify small-cell to share the frequency resource of the second target with the second target adjacent area, and using this frequency resource as the 3rd frequency resource specifying small-cell and the second target adjacent area, wherein, the 3rd frequency resource is the frequency resource specifying small-cell exclusive with the second target adjacent area.
For the appointment small-cell in the present embodiment, when specifying small-cell to be converted to close off state by opening, it is possible to the frequency resource that small-cell takies is specified in release.
Additionally providing the distributor of a kind of small-cell frequency resource in the present embodiment, this device is used for realizing above-described embodiment and optional embodiment, has be carried out repeating no more of explanation.As used below, term " module " " unit " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following example preferably realizes with software, but hardware, or the realization of the combination of software and hardware is also likely to and is contemplated.
Fig. 2 is the distributor structured flowchart of small-cell frequency resource according to embodiments of the present invention, as shown in Figure 2, this device includes: acquisition module 22, for when specifying small-cell to be converted to opening by closed mode, obtain the appointment information of the adjacent area corresponding with specifying small-cell, wherein, it is intended that information is for reflecting each adjacent area disturbed condition to specifying small-cell；Distribution module 24 is of coupled connections with acquisition module 22, for specifying the frequency resource of small-cell according to the information distribution of appointment.
Fig. 3 is the optional structured flowchart one of distributor of the frequency resource of small-cell according to embodiments of the present invention, as it is shown on figure 3, acquisition module 22 includes: the first acquiring unit 32, for obtaining the information for indicating adjacent area on off state；Second acquisition unit 34 and the first acquiring unit 32 are of coupled connections, and specify small-cell to be in the RSRP value of adjacent area of opening relative to each for obtaining；3rd acquiring unit 36 is of coupled connections with second acquisition unit 34, and the frequency resource for obtaining all adjacent areas being in opening takies the information of situation.
Fig. 4 is the optional structured flowchart two of distributor of the frequency resource of small-cell according to embodiments of the present invention, as shown in Figure 4, distribution module 24 comprises determining that unit 42, for when there is unappropriated frequency resource block in the instruction of frequency resource occupied information, unappropriated frequency resource block is defined as specifying the first frequency resource of small-cell, wherein, first frequency resource is the exclusive frequency resource specifying small-cell.
Fig. 5 is the optional structured flowchart three of distributor of the frequency resource of small-cell according to embodiments of the present invention, as shown in Figure 5, distribution module 24 includes: select unit 52, for when the instruction of frequency resource occupied information is absent from unappropriated frequency resource block, select one or more adjacent areas with second frequency resource as first object adjacent area, wherein, second frequency resource is the shared frequencies resource of first object adjacent area；First transmitting element 54, during for the RSRP value of whole adjacent areas in first object adjacent area higher than predetermined threshold, sends the first request message to center control nodes, and wherein, the first request message is used for indicating first object adjacent area release second frequency resource；Receiving unit 56 and the first transmitting element 54 to be of coupled connections, for receiving in response to the first response message asking message, wherein, response message controls node using the second frequency resource first frequency resource as appointment small-cell for Deictic Center；Or,
Second transmitting element 58, for part adjacent area in first object adjacent area RSRP value higher than predetermined threshold time, sending the second request message to center control nodes, wherein, the second request message is used for indicating appointment small-cell to share second frequency resource with first object adjacent area.
Fig. 6 is the optional structured flowchart four of distributor of the frequency resource of small-cell according to embodiments of the present invention, as shown in Figure 6, distribution module 24 includes: second selects unit 62, for being absent from unappropriated frequency resource block in the instruction of frequency resource occupied information, and when not there is second frequency resource of first object adjacent area, select the adjacent area that RSRP value is minimum as the second target adjacent area from the adjacent area specifying small-cell；3rd transmitting element 64 and second selects unit 62 to be of coupled connections, for sending the 3rd request message to center control nodes, wherein, 3rd request message is for asking to specify small-cell to share the frequency resource of the second target with the second target adjacent area, and using this frequency resource as the 3rd frequency resource specifying small-cell and the second target adjacent area, wherein, the 3rd frequency resource is the frequency resource specifying small-cell exclusive with the second target adjacent area.
Below in conjunction with optional embodiment of the present invention, the present invention is illustrated.
This alternative embodiment is with UDN for application scenarios, it is provided that a kind of suitable in UDN scene small-cell open after the method for frequency resource preliminery application, by introducing the factor impacts on this cell frequency resources application such as adjacent cell interference, frequency resource occupancy.
According to this alternative embodiment purpose, propose small-cell base station in UDN to be required to receive the switching-state information and the frequency resource occupancy information that are sent the adjacent area come by other base stations or center control nodes, in order to more reasonably frequency resource application is made in the small-cell just opened.
The method of the resource bid of this alternative embodiment can be implemented by:
Step S202: when a small-cell is changed into open state by off status, sends e transition information to center control nodes, and this information operates in order to activation frequency resource preliminery application.
Step S204: small-cell is by sending on off state, frequency resource occupied information feedback request to neighboring station, or after center control nodes receives the e transition information of this community, the neighboring BS information in this district is directly issued, in order to the community just opened determines, by neighboring BS information, the frequency resource that application uses.
Step S206: after obtaining the on off state of neighboring station, filter out the adjacent area of all open state, and these adjacent areas are carried out the measurement of RSRP (ReferenceSignalReceivingPower, reference signal accepts power).
Step S208: measurement result is sorted after the neighboring station RSRP of all open state is measured by the base station of this small-cell from high to low, RSRP is more high, means when both use the interference that same frequency range Shi Gai community can be subject to this adjacent area higher.
Step S210: base station determines whether unappropriated frequency resource block by the frequency resource occupied information that neighboring station is fed back, and carries out frequency resource application according to judged result.
Step S212: if there is unappropriated frequency resource block, then base station directly takies the correspondingly sized frequency resource that do not use to center control nodes application, and it can be used as the first frequency resource of this base station according to demand.
Step S214: if there is no unappropriated frequency resource block, then according to detecting whether in above-mentioned sequence that there is neighboring station uses second frequency resource from high to low respectively.
Wherein, namely first frequency resource is exclusive resource, community to guarantee each unlatching ensure that most basic data service, when only disturbing very low when between two neighbor cells and do not have during other available frequency resources just can carry out multiplexing simultaneously as the first frequency resource of the two community；Second frequency resource belongs to shared resource, when ensureing to disturb relatively low between adjacent cell, it is possible to there is multiple community and uses to improve respective service quality.
Step S216: if there is neighboring station to use second frequency resource, then select in the ranking average RSRP value neighboring station that is higher and that have second frequency resource as target.Concurrently set RSRP threshold value one, filter out all the other neighboring stations taking target frequency bands, when the neighboring station selected RSRP measured value higher than threshold value for the moment, then micro-base station sends the second frequency resource of request release target neighboring station and RSRP value this section of second frequency resource higher than the neighboring station of threshold value one using as self first frequency resource use to center control nodes；Otherwise, only the second frequency resource of request release target neighboring station is sent for self to center control nodes.
Step S218: after center control nodes receives the request at this station, sends this section of second frequency resource to all Target cells and regains instruction, use as first frequency resource for this Microcell.
Step S220: if there is no neighboring station uses second frequency resource, then selecting the neighboring station that RSRP value is minimum in the ranking as target, this base station sends the first frequency resource of request and target BS multiplexing same frequency resource and this Resource Block respectively two base stations to MNB.
Step S222: when community is converted to off status by open state, then discharge its shared frequency resource and be available for other communities as first or the use of second frequency resource.
Below in conjunction with the drawings and specific embodiments, this alternative embodiment is illustrated；
Fig. 7 is small-cell distributed architecture schematic diagram in the UDN network according to alternative embodiment of the present invention, as shown in Figure 7, in the region of a macro base station service, there is the region that micro-base station of a lot of small-cell services, and likely there is different kinds micro-base station, such as Pico, SmallCell, Micro, Femto etc., it is possible to it is referred to as low power transmissions base station LNB.
Fig. 8 is on off state schematic diagram in small-cell in the UDN according to alternative embodiment of the present invention, as shown in Figure 8, due to when small-cell high-density deployment, often some community is in the situation of low-load, for the consideration saving the energy, the small-cell of some low-load needs to be closed, and thus can produce community on-off phenomenon as shown in Figure 8.
In this alternative embodiment, the process of SmallCell application and dividing frequency resource may include steps of:
Step S302: when a SmallCell is changed into ON state by OFF state, obtains its neighboring station feedback switch status information and frequency band occupied information；
Wherein, the on off state of above-mentioned acquisition neighbor cell, frequency resource behaviour in service and the disturbed condition to local area are able to better frequency resource application to reduce interference each other；
Additionally, should include in frequency band occupied information: frequency resource block takies situation, first frequency resource and the division of second frequency resource, can apply for more excellent frequency resource more convenient, accurately for the community just opened.Wherein, namely first frequency resource is exclusive resource, community to guarantee each unlatching ensure that most basic data service, when only disturbing very low when between two neighbor cells and do not have during other available frequency resources just can carry out multiplexing simultaneously as the first frequency resource of the two community；Second frequency resource belongs to shared resource, when ensureing to disturb relatively low between adjacent cell, it is possible to there is multiple community and uses to improve respective service quality.
Step S304: community is by considering the sequence of the adjacent area RSRP reception value of open state and the frequency resource occupancy that feeds back to, this frequency resource block is preferentially used when there is vacant frequency resource, to reach to use frequency resource orthogonal between neighboring station, exclusive PCR；When being absent from vacant frequency resource, then determine the frequency resource that will apply for according to first, second frequency resource allocation situation of adjacent area and RSRP sequence.
Obtain neighboring station information for SmallCell, above-mentioned steps S302 is illustrated with the form of two specific embodiments.
Embodiment one:
When a community is changed into ON state by OFF state, the original frequency resource bid process of this community will be activated.When community is just opened, the position of each UE in community cannot be judged, so the disturbed condition that each UE receives other communities cannot be concluded, therefore the factor application such as frequency, RSRP, Resources allocation should be used to fight off other communities to the interference caused of UE in this community according to other communities.
Fig. 9 is the method flow diagram one obtaining feedback switch status information and frequency band occupied information according to alternative embodiment of the present invention, and the step of the method includes:
Step S902: small-cell is changed into ON state by OFF state, activates original frequency resource bid process；
Step S904: small-cell sends on off state to adjacent area, frequency resource takies situation feedback request；
Step S906: after adjacent area is subject to this feedback request, is sent the on off state of self and frequency resource occupied information by broadcast channel；
Step S404: all adjacent areas being in open state, after the on off state obtaining adjacent area, are carried out the measurement of Reference Signal Received Power RSRP, and measurement result are ranked up by the small-cell just opened.
Wherein, when the RSRP value measuring an adjacent cell is more big, just illustrates that this adjacent area is more big to the interference of the entirety of UE in this small-cell, therefore when frequency resource application, should preferentially avoid the frequency resource that the adjacent area use bigger with RSRP is identical.
Embodiment two
Figure 10 is the method flow diagram two obtaining feedback switch status information and frequency band occupied information according to alternative embodiment of the present invention, and for the another kind of implementation of this alternative embodiment step S302, the step of the method includes:
Step S1002: small-cell is changed into ON state by OFF state, activates original frequency resource bid process；
Step S1004: small-cell sends adjacent area on off state to MasterTP, frequency resource takies situation information feedback；
After step S1006:MasterTP is subject to the request of this community, finds out its adjacent area according to this small-cell coordinate information, and be sent to the Real-Time Switch information of adjacent area, frequency resource occupied information；
Step S1008: all adjacent areas being in open state, after the on off state obtaining adjacent area, are carried out the measurement of Reference Signal Received Power RSRP, and measurement result are ranked up by the small-cell just opened.
Figure 11 is the application method flow chart of the frequency resource according to alternative embodiment of the present invention, and as shown in figure 11, the one for the step S304 of this alternative embodiment realizes method, and the method comprises the steps:
Step S1102: judge whether unappropriated frequency resource；If there is unappropriated frequency resource, then jump and perform step S1104；Otherwise, step S1106 is performed.
Step S1104: small-cell can directly directly use to the vacant frequency resource block that center control nodes application is correspondingly sized for this intra-cell users according to user's request；Perform step S1112 afterwards；
Step S1106: determine whether to use the neighbor cell of the resource of second frequency；When adjacent cell has use second frequency resource, perform step S1108；Otherwise perform step S1110；
Namely continue the frequency occupation information according to adjacent cell feedback and analyze first, second frequency use condition of each adjacent cell, to perform more excellent frequency resource application；
Step S1108: application uses the sequence of RSRP measured value the highest and has the second frequency resource of adjacent cell of second frequency resource, and by this component frequency resource reclaim；
Wherein, the feature of second frequency resource is to would be likely to occur multiple adjacent area to share use, so in order to reduce interference, select to have second frequency resource and adjacent area the highest in above-mentioned RSRP sorts as target, simultaneously, select all in the adjacent area by this band frequency resource according to this second frequency resource, the RSRP reception value of these adjacent areas and RSRP the first preset value are compared, all RSRP values are also served as Target cell more than the adjacent area of the first preset value, backward center control nodes application take this second frequency resource and regain this section of resource of all Target cells.
When receiving this frequency resource application, upper strata will be regained the second frequency resource of target adjacent area and assigned them to the small-cell that application uses.The reason that this step so performs is in that second frequency resource belongs to shared resource, when the application of this community uses, is regained by this band frequency of community bigger for interference and other adjacent areas can be caused minimum interference.
Step S1110: send minimum community in sorting with RSRP to MasterTP and carry out frequency resource multiplexing request；
Wherein, when all adjacent areas all only use first frequency resource, then being selected in RSRP sequence minimum adjacent cell is target, to the first frequency resource that center control nodes this adjacent cell of application multiplexing uses.By such frequency resource application, can ensure that the frequency resource used with other adjacent cells orthogonal at the same time it can also be the interference guaranteeing between the adjacent area of channelized frequencies is minimum.
Step S1112: community is OFF state by ON state transfer, is released back in resource pool by the frequency resource taken, is available for other communities and uses selected as first or second frequency resource.
Embodiment three
Figure 12 takies situation schematic diagram and RSRP sequence schematic diagram according to alternative embodiment small-cell of the present invention frequency resource.In figure 12 it can be seen that the small-cell base station that community a has just opened, have community b, c, d, e, f about.Implementation according to this patent, a sends, to center control nodes, the request obtaining neighboring BS information after opening；Center control nodes finds out its all adjacent cell b, c, d according to the coordinate information of a after receiving this request, e, f, and switching information and the frequency resource occupied information of these communities is obtained according to the reporting information of these small-cell nodes, transmit these information to small-cell a afterwards.The adjacent small-cell learning its unlatching after a obtains feedback information a is b, c, d, e, f, is ordered as community c, f, e, b, d by measuring the RSRP obtaining these communities.
Now, frequency resource occupied information further according to each adjacent cell obtained, the all frequency resources of known frequency are all occupied, and know that in these adjacent cells, some has second frequency resource, after above-mentioned enforcement step, application using first frequency resource as self of the second frequency block 6 of f base station and is asked small-cell f and small-cell b to discharge this block frequency resource by base station a, as shown in table 1:
Table 1
Table 2 is that the frequency resource block of small-cell a-small-cell f takies situation after above-mentioned adjustment, as shown in table 2:
| Community ID | Frequency resource block takies situation |
| a | 6 |
| b | 12 |
| c | 4 |
| d | 5,3 |
| e | 1,3 |
| f | 4 |
Table 2
In this alternative embodiment, based on community on-off mode when small-cell is opened, the request message that adjacent cell on off state, frequency resource are taken situation will be triggered, and the Reference Signal Received Power value of adjacent area is measured by community；After the level of interference and frequency resource that obtain adjacent region take situation, this small-cell carries out comprehensive consideration and applies for that the frequency resource of optimum uses, can obtain, by this alternative embodiment small-cell, the frequency resource that adjacent region interference is minimum, and then whole network performance can be promoted.
On be only optional embodiment 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.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (11)
1. the distribution method of a small-cell frequency resource, it is characterised in that including:
When specifying small-cell to be converted to opening by closed mode, obtaining the appointment information of the adjacent area corresponding with described appointment small-cell, wherein, described appointment information is for reflecting each described adjacent area disturbed condition to described appointment small-cell；
The frequency resource of described appointment small-cell is distributed according to described appointment information.
2. method according to claim 1, it is characterised in that the appointment information obtaining the adjacent area corresponding with described appointment small-cell includes:
Obtain the information for indicating described adjacent area on off state；
Obtain described appointment small-cell and be in the RSRP value of described adjacent area of opening relative to each；
The frequency resource obtaining all described adjacent area being in opening takies the information of situation.
3. method according to claim 2, it is characterised in that the frequency resource distributing described appointment small-cell according to described appointment information includes:
When there is unappropriated described frequency resource block in the instruction of described frequency resource occupied information, using the unappropriated described frequency resource block first frequency resource as described appointment small-cell, wherein, described first frequency resource is the exclusive frequency resource of described appointment small-cell.
4. method according to claim 3, it is characterised in that the frequency resource distributing described appointment small-cell according to described appointment information includes:
When the instruction of described frequency resource occupied information is absent from unappropriated described frequency resource block, one or more adjacent areas with second frequency resource are selected to be defined as first object adjacent area, wherein, described second frequency resource is the shared frequencies resource of described first object adjacent area；
When the RSRP value of whole adjacent areas is higher than predetermined threshold in described first object adjacent area, sending the first request message to center control nodes, wherein, described first request message is used for indicating described first object adjacent area to discharge described second frequency resource；And receive in response to the described first response message asking message, wherein, described response message is for indicating described center control nodes using the described second frequency resource described first frequency resource as described appointment small-cell；Or,
When in described first object adjacent area, the RSRP value of part adjacent area is higher than predetermined threshold, the second request message is sent to center control nodes, wherein, described second request message is used for indicating described appointment small-cell and described first object adjacent area to share described second frequency resource.
5. method according to claim 4, it is characterised in that the frequency resource distributing described appointment small-cell according to described appointment information includes:
It is absent from unappropriated described frequency resource block in the instruction of described frequency resource occupied information, and when not there is described second frequency resource of described first object adjacent area, select the adjacent area that RSRP value is minimum as the second target adjacent area from the adjacent area of described appointment small-cell；
The 3rd request message is sent to described center control nodes, wherein, the frequency resource that described 3rd request message shares described second target for asking described appointment small-cell and described second target adjacent area, and using this frequency resource the 3rd frequency resource as described appointment small-cell Yu described second target adjacent area, wherein, described 3rd frequency resource is the frequency resource that described appointment small-cell is exclusive with described second target adjacent area.
6. the method according to any one of claim 1 to 5, it is characterised in that described method also includes:
When described appointment small-cell is converted to close off state by opening, discharge the frequency resource that described appointment small-cell takies.
7. the distributor of a small-cell frequency resource, it is characterised in that including:
Acquisition module, for when specifying small-cell to be converted to opening by closed mode, obtaining the appointment information of the adjacent area corresponding with described appointment small-cell, wherein, described appointment information is for reflecting each described adjacent area disturbed condition to described appointment small-cell；
Distribution module, for distributing the frequency resource of described appointment small-cell according to described appointment information.
8. device according to claim 7, it is characterised in that described acquisition module includes:
First acquiring unit, for obtaining the information for indicating described adjacent area on off state；
Second acquisition unit, is in the RSRP value of described adjacent area of opening for obtaining described appointment small-cell relative to each；
3rd acquiring unit, the frequency resource for obtaining all described adjacent area being in opening takies the information of situation.
9. device according to claim 8, it is characterised in that described distribution module includes:
Determine unit, for when there is unappropriated described frequency resource block in the instruction of described frequency resource occupied information, unappropriated described frequency resource block is defined as the first frequency resource of described appointment small-cell, and wherein, described first frequency resource is the exclusive frequency resource of described appointment small-cell.
10. device according to claim 9, it is characterised in that described distribution module includes:
Select unit, for when the instruction of described frequency resource occupied information is absent from unappropriated described frequency resource block, selecting one or more adjacent areas with second frequency resource as first object adjacent area, wherein, described second frequency resource is the shared frequencies resource of described first object adjacent area；
First transmitting element, for adjacent areas whole in described first object adjacent area RSRP value higher than predetermined threshold time, sending the first request message to center control nodes, wherein, described first request message is used for indicating described first object adjacent area to discharge described second frequency resource；
Receiving unit, for receiving in response to the described first response message asking message, wherein, described response message is for indicating described center control nodes using the described second frequency resource described first frequency resource as described appointment small-cell；Or,
Second transmitting element, during for the RSRP value of part adjacent area in described first object adjacent area higher than predetermined threshold, the second request message is sent to center control nodes, wherein, described second request message is used for indicating described appointment small-cell and described first object adjacent area to share described second frequency resource.
11. device according to claim 10, it is characterised in that described distribution module includes:
Second selects unit, for being absent from unappropriated described frequency resource block in the instruction of described frequency resource occupied information, and when not there is described second frequency resource of described first object adjacent area, select the adjacent area that RSRP value is minimum as the second target adjacent area from the adjacent area of described appointment small-cell；
3rd transmitting element, for sending the 3rd request message to described center control nodes, wherein, the frequency resource that described 3rd request message shares described second target for asking described appointment small-cell and described second target adjacent area, and using this frequency resource the 3rd frequency resource as described appointment small-cell Yu described second target adjacent area, wherein, described 3rd frequency resource is the frequency resource that described appointment small-cell is exclusive with described second target adjacent area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410827361.3A CN105792374A (en) | 2014-12-25 | 2014-12-25 | Small cell frequency resource allocation method and device |
| PCT/CN2015/079314 WO2016101518A1 (en) | 2014-12-25 | 2015-05-19 | Method and device for allocating frequency resource of small cell |
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| CN201410827361.3A CN105792374A (en) | 2014-12-25 | 2014-12-25 | Small cell frequency resource allocation method and device |
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| WO (1) | WO2016101518A1 (en) |
Cited By (1)
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| CN107801188A (en) * | 2016-08-30 | 2018-03-13 | 上海诺基亚贝尔股份有限公司 | Method, macro base station and the transmission point device of virtual subdistrict are formed in heterogeneous network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108882243A (en) * | 2017-05-10 | 2018-11-23 | 索尼公司 | For the electronic equipment of wireless communication system, method and storage medium |
| CN107333333B (en) * | 2017-08-10 | 2019-10-08 | 北京邮电大学 | A kind of resource allocation methods based on user traffic flow |
| CN113381796B (en) * | 2020-02-25 | 2023-04-18 | 大唐移动通信设备有限公司 | Resource allocation method, resource determination method, device, network side equipment and terminal |
| CN116245344B (en) * | 2023-05-11 | 2023-07-14 | 成都愚创科技有限公司 | Scientific research resource management method and system based on big data and readable medium |
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| CN102202404A (en) * | 2010-03-23 | 2011-09-28 | 华为技术有限公司 | Method and equipment for scheduling radio resource |
| CN102612042A (en) * | 2012-04-13 | 2012-07-25 | 北京邮电大学 | Perception-based frequency spectrum self-management method in femtocell network |
| CN103428869A (en) * | 2012-05-17 | 2013-12-04 | 华为技术有限公司 | Method, base station and communication system for coordinating inter-cell interference |
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- 2014-12-25 CN CN201410827361.3A patent/CN105792374A/en not_active Withdrawn
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| CN101242640A (en) * | 2007-02-08 | 2008-08-13 | 鼎桥通信技术有限公司 | Inter-cell interference restraint method, base station and system for restraining inter-cell interference |
| CN102202404A (en) * | 2010-03-23 | 2011-09-28 | 华为技术有限公司 | Method and equipment for scheduling radio resource |
| CN102612042A (en) * | 2012-04-13 | 2012-07-25 | 北京邮电大学 | Perception-based frequency spectrum self-management method in femtocell network |
| CN103428869A (en) * | 2012-05-17 | 2013-12-04 | 华为技术有限公司 | Method, base station and communication system for coordinating inter-cell interference |
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| CN107801188A (en) * | 2016-08-30 | 2018-03-13 | 上海诺基亚贝尔股份有限公司 | Method, macro base station and the transmission point device of virtual subdistrict are formed in heterogeneous network |
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| WO2016101518A1 (en) | 2016-06-30 |
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