CN102474749A - Resources scheduling method for spectrum sharing system and base station - Google Patents

Resources scheduling method for spectrum sharing system and base station Download PDF

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Publication number
CN102474749A
CN102474749A CN2009801598768A CN200980159876A CN102474749A CN 102474749 A CN102474749 A CN 102474749A CN 2009801598768 A CN2009801598768 A CN 2009801598768A CN 200980159876 A CN200980159876 A CN 200980159876A CN 102474749 A CN102474749 A CN 102474749A
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China
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user equipments
base station
main
overlay region
overlapped area
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CN2009801598768A
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Chinese (zh)
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CN102474749B (en
Inventor
邱吉刚
杨峰
徐斌阳
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上海贝尔股份有限公司
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Priority to PCT/CN2009/074036 priority Critical patent/WO2011032317A1/en
Publication of CN102474749A publication Critical patent/CN102474749A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/08Wireless resource allocation where an allocation plan is defined based on quality criteria
    • H04W72/082Wireless resource allocation where an allocation plan is defined based on quality criteria using the level of interference

Abstract

The present invention provides a new resources scheduling method for a spectrum sharing system and a base station. According to the present invention, each base station divides its subscriber stations into the subscriber stations of overlapping region and the subscriber stations of non-overlapping region according to geographical position or other recognition mechanism for interference source. Each coexistent system executes a rough-scheduling process for radio time-frequency resources of its main sub-frame according to the grouping situation of the subscriber stations so as to determine whether the corresponding radio resources are allocated to the group of subscriber stations of overlapping region or the group of subscriber stations of non-overlapping region. The main system transmits the rough-scheduling information of its main sub-frame to other auxiliary systems so that it can be used in the rough-scheduling process of the auxiliary systems. Finally, the main system and other auxiliary systems of the main sub-frame, according to the rough-scheduling information, respectively execute precise-scheduling program according to the preset interference-elimination strategy and allocate the relevant resources to the specific subscriber stations. The solution provided by the present invention could effectively avoid the mutual interference between the systems before the interference happens, and effectively reduce the resources consumed by the information transmission between the systems.

Description

The resource regulating method of frequency Pan's shared system and station technology field

The present invention relates to the resource regulating method base station of the communication technology, more particularly to spectra sharing system.Background technology

Recently, spectrum-sharing techniques solve the problems, such as that the potentiality of spectrum shortage cause the extensive attention of people because of it.On the one hand, frequency range is being authorized, spectrum-sharing techniques utilize the frequency range of authorisation device in which can make unauthorized device opportunistic.On the other hand, in unauthorized frequency range, spectrum-sharing techniques can realize the coexisting so as to improving frequency language efficiency of a variety of wireless systems.In current, related standardization body, such as IEEE 802.16h are formulating the various strategies shared based on frequency language and access control mechanism to realize coexisting between system.

In unauthorized frequency range, the typical network architecture that multiple wireless systems coexist is as shown in Fig. 1.Two adjacent systems(System A and system B is designated herein) work in same radio band.User equipment SS1 SS5 are subordinated to system A, and user equipment SS6 SS9 are then subordinated to system B. wherein, and SS2, SS3, SS9 and SS10 are located at the overlapping region of the two systems area of coverage.In the case, BS1 (base station 1) downlink message transmission will cause a certain degree of interference to SS9/SS10;Correspondingly, SS9/SS10 uplink message transmission can also cause a certain degree of interference to BS1.Based on this, system A and system B can be regarded as mutual interference neighbors system respectively.Obviously, if interfering between such a neighbor system can not obtain effectively solving, the handling capacity of system will degradation, and the QoS of user will also cannot be guaranteed.

For interfering between solution system, IEEE 802.16h propose a series of interference controlling mechanism, include the adaptive channel selection of frequency domain(), ACS the adaptive subframe selection (ASFA) of time domain and adaptive power control mechanism.When a system needs and other systems coexist, specific interference control flow is as follows:

1) first, by adaptive channel selection mechanism from frequency domain interfering between elimination system.That is, system is recognized using collected relevant information and uses a certain idle channel.If available currently without idle channel, the system can by optimize the channel distribution of its neighbor system from And it is used to vacate an idle channel.

If 2) can not obtain idle channel by adaptive channel selection mechanism, the system is had to and its neighbor system shared channel.In the case, the system eliminates interference using adaptive subframe selection mechanism from time domain.It is used to realize coexisting for multisystem therefore, IEEE 802.16h specially define a kind of frame structure that coexists, as shown in Figure 2.

One coexists frame by 4 mac frames of IEEE 802.16(Here each MAC frames are referred to as a subframe)Composition, and it is subdivided into the subframe of following several types:Boss's frame, secondary subframe and shared subframe.Wherein, each symbiotic system needs to obtain a subframe as its boss's frame, and correspondingly the system is referred to as the main system of this subframe, and other symbiotic systems are then referred to as the subsystem of the subframe.It is noted that each subframe can and be merely able to by a symbiotic system as its boss's frame.In other words, if some subframe is its boss's frame by some Systems Bulletin, the subframe can only be used as next subframe by other symbiotic systems.System can be transmitted during its boss's frame using maximum power;Correspondingly, transmit power of the system secondarily during subframe is limited, it is however generally that needed less than its maximum transmit power 6dB or so.

Adaptive subframe selection mechanism is similar with adaptive channel selection mechanism.System is recognized by the use of collected relevant information and uses a certain idle subframe as its boss's frame.If available currently without idle subframe, it is used that the system can vacate an idle subframe by optimizing the main subframe distribution of its neighbor system.

3) interference to main system is reduced using power control mechanism.During boss's frame of some system, have the right requirement other symbiotic systems of this system reduce their transmit power, or even stop their transmission and avoid interference to it.

But, due to mutually coordinated between shortage system, the above-mentioned mechanism defined in IEEE 802.16h can not effectively solve interfering between system.As shown in figure 1,

A) system A boss's frame ascending time slot, SS9/SS10 transmission will damage BS1 receiving.Although the interference controlling mechanism that can be defined using IEEE 802.16h solves this problem:That is, BS1 is linked or eated dishes without rice or wine by the IP on backstage to send Inter-System Informations such as " reduction power leave subframe ", it is desirable to which SS9/SS10 reduces their transmit power P dB or stops their transmission operation, and P is performance number, can be by default.

B) " the interference control machine of property afterwards that above-mentioned interference controlling mechanism only actually is a kind of System ".Only after interference has occurred and that and is detected, disturbed system starts interference controlling mechanism just now, i.e. send corresponding interference control command to interference source.

C) above-mentioned interference controlling mechanism will expend substantial amounts of resource, for transmitting Inter-System Informations such as " reduction power leave subframe ".User equipment in system overlapping area is more, it is necessary to which the Inter-System Information of transmission is more.

■ is in the descending time slot of system A boss's frame, and BS2 transmission will disturb SS2/SS3 message to receive.This problem how is solved, corresponding solution is not provided in the prior art.

■ is similar in the interference of the uplink/downlink time slot of system B boss's frame.

D) in addition, the interference cancellation mechanisms defined using IEEE 802.16h, substantial amounts of transmission opportunity, which will be wasted, reduces spectrum efficiency, and reason is as described below:

Descending time slots of the ■ in system A boss's frame, when BS1 sends message to its SS such as SS1/SS4/SS5 for being in Non-overlapping Domain, if BS 2 sends message to its SS such as SS9/SS10 for being in overlapping region, the transmission interference due to BS1 can not be properly received the message from BS 2 by SS9/SS10.In order to SS9/SS10 proper communications, BS 2 has to improve its transmit power, or even can disturb SS1/SS4/SS5 reception.So in the case, BS 2 has to stop its transmission.Obviously, more it is reasonably if that, when BS1 sends just blunt literary to SS1/SS4/SS5, BS 2 should send message to its SS such as SS6/SS7/SS8 for being in Non-overlapping Domain at this moment.But prior art does not refer to above scheme.

■ is in the ascending time slot of system A boss's frame, and when the system A such as SS1/SS4/SS5 of the SS in Non-overlapping Domain send message to BS1, the system B such as SS9/SS10 of the SS in overlapping region data, which are sent, will disturb BS1 reception.To avoid this interference, SS9/SS10 has to stop their data transfer.But, if corresponding running time-frequency resource can be scheduled to such as SS6/SS7/SS8 of the SS in Non-overlapping Domain by BS2, frequency language efficiency will be improved.That is, system A and system B be in Non-overlapping Domain SS can be higher power simultaneously send without interfering with each other.But prior art does not refer to above scheme.

The existing mechanism for being used to realize the condition of multi-system coexistence in unauthorized frequency range of ■, the mechanism as defined in IEEE 802.16h, on the one hand it can not efficiently solve mutually dry 4 outstanding between system, and generally require the substantial amounts of frequent resource of consuming and be used to transmit such as power control command signaling letter Breath.Furthermore, using these mechanism substantial amounts of transmission opportunity will be caused to be wasted, so as to reduce frequency language efficiency.The content of the invention

To solve the above problems, the present invention proposes resource regulating method and the base station of new spectra sharing system.

According to the present invention, its SS (user equipment) is divided into overlay region SS and non-overlapped area SS by each BS according to geographical position or other interference source recognition mechanisms.Each symbiotic system is given as overlay region SS groups according to the radio resource allocation of user equipment or is allocated to non-overlapped area SS groups.Thick schedule information to its boss's frame is sent to other subsystems for the thick scheduling process of subsystem by main system.Finally, the main system of boss's frame and other subsystems perform smart scheduler program according to predetermined interference dispelling tactics, related resource are distributed into specific ss respectively according to thick schedule information.

Specifically, according to an embodiment of the invention, a kind of resource regulating method of spectra sharing system is provided, the spectra sharing system includes multiple symbiotic systems, each symbiotic system includes at least one base station and at least two user equipmenies, there is a main system on each boss's frame, others are subsystem;Wherein, methods described includes,

Its user equipment is grouped into overlay region user equipment and non-overlapped area's user equipment by each base station;

Main system base station performs thick scheduling process to the Radio Resource of its boss's frame, by respective wireless resource allocation is to its overlay region group of user equipments and non-overlapped area's group of user equipments and sends its coarse adjustment degree object information;

Subsystem base station receives the thick schedule information for carrying out autonomous system, according to the thick scheduling result in main system base station, thick scheduling process is performed to boss's frame Radio Resource of main system, its overlay region group of user equipments and non-overlapped area's group of user equipments are given by respective wireless resource allocation;

Main system base station performs smart scheduler program, by respective wireless resource allocation to the user equipment belonging to it according to coarse adjustment degree object information to the Radio Resource of its boss's frame;

Subsystem base station is according to coarse adjustment degree object information, to boss's frame Radio Resource of main system Smart scheduler program is performed, by respective wireless resource allocation to the user equipment belonging to it.

According to the alternative embodiment of the present invention, the execution of main system base station refers to main system base station according to its user equipment grouping information for the thick scheduling process of its boss's frame, initial distribution for the initial number for the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and these resource blocks.

According to the alternative embodiment of the present invention, the execution of main system base station will ensure that overlay region group of user equipments is transmitted or received in the resource block of boss's frame for the coarse adjustment degree of its boss's frame.

According to the alternative embodiment of the present invention, subsystem is according to the thick schedule information of main system, thick scheduling process is performed to boss's frame Radio Resource of main system, refer to thick schedule information and its user equipment grouping information of the subsystem base station according to main system, for the initial number for the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and the initial distribution of these resource blocks, specifically include:

Subsystem ^ can not be reallocated to by distributing to the resource block of main system overlay region group of user equipments

The resource block for distributing to the non-overlapped area's group of user equipments of main system is distributed into the non-overlapped area's group of user equipments of subsystem;

The overlay region group of user equipments and/or non-overlapped area's group of user equipments of subsystem can be distributed to by being not yet assigned to the resource block of main system group of user equipments.

According to the alternative embodiment of the present invention, smart scheduling process refers to be based on thick scheduling result, criterion is eliminated according to interference set in advance, the wireless resource block for distributing to overlay region group of user equipments and non-overlapped area's group of user equipments is further distributed to the user equipment belonging to it.

According to the alternative embodiment of the present invention, user equipment is divided into by overlay region user equipment and non-overlapped area's user equipment according to interference source recognition mechanism:Overlay region user equipment refers to the user equipment disturbed by neighbor system;Non-overlapped area's user equipment refers to the user equipment not disturbed by neighbor system.

According to the alternative embodiment of the present invention, user equipment is divided into by overlay region user equipment and non-overlapped area's user equipment according to the packet mode in GPS geographical position. According to another implementation of the invention, a kind of resource regulating method of spectra sharing system is provided, the spectra sharing system includes multiple symbiotic systems, each symbiotic system includes at least one base station and at least two user equipmenies, base station is worked during its boss's frame as main system base-station, is worked during it is from subframe as subsystem base station;Wherein, methods described includes,

Its user equipment is grouped into overlay region user equipment and non-overlapped area's user equipment by base station;

Base station performs thick scheduling process to the Radio Resource of its boss's frame, by respective wireless resource allocation is to its overlay region group of user equipments and non-overlapped area's group of user equipments and sends its coarse adjustment degree object information;

Base station performs smart scheduler program, by respective wireless resource allocation to the user equipment belonging to it according to the coarse adjustment degree object information of the Radio Resource to its boss's frame to the Radio Resource of its boss's frame;

Base station receives the thick schedule information from other main system base stations, according to other thick scheduling results in main system base station, thick scheduling process is performed from the Radio Resource of subframe to it, its overlay region group of user equipments and non-overlapped area's group of user equipments are given by respective wireless resource allocation;

Base station, from the coarse adjustment degree object information of the Radio Resource of subframe, performs smart scheduler program, by respective wireless resource allocation to the user equipment belonging to it to it according to it from the Radio Resource of the Radio Resource of subframe.

According to the alternative embodiment of the present invention, wherein, base station performs thick scheduling process to the Radio Resource of its boss's frame and refers to base station according to its user equipment grouping information, initial distribution for the initial number for the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and these resource blocks.

According to the alternative embodiment of the present invention, base station performs coarse adjustment degree to the Radio Resource of its boss's frame will ensure that overlay region group of user equipments is transmitted or received in the resource block of boss's frame.

According to the alternative embodiment of the present invention, wherein, base station performs thick scheduling process to it from subframe Radio Resource, refers to subsystem base station according to its user equipment grouping information and the thick schedule information of other main system base stations, for determine to distribute to overlay region group of user equipments and The initial number of the resource block of non-overlapped area's group of user equipments, and these resource blocks initial distribution, specifically include:

Subsystem can not be reallocated to by being already allocated to the resource block of other main system overlay region group of user equipments;

The resource block for distributing to the non-overlapped area's group of user equipments of other main systems is distributed into the non-overlapped area's group of user equipments of subsystem;

The overlay region group of user equipments and/or non-overlapped area's group of user equipments of subsystem can be distributed to by being not yet assigned to the resource block of other main system group of user equipments.

According to the alternative embodiment of the present invention, wherein, smart scheduling process refers to be based on thick scheduling result, eliminates criterion according to interference set in advance, the wireless resource block for distributing to overlay region group of user equipments and non-overlapped area's group of user equipments is further distributed to the user equipment belonging to it.

According to another implementation of the invention there is provided a kind of base station, it is operated in spectra sharing system, the base station includes:

User grouping unit, for its user equipment to be grouped into overlay region user equipment and non-overlapped area's user equipment;

Thick scheduling unit, for resource block to be distributed into its overlay region group of user equipments and non-overlapped area's group of user equipments;

Smart scheduling unit, for further distributing overlay region group of user equipments and non-overlapped area's user equipment by the resource block for distributing to its overlay region group of user equipments and non-overlapped area's group of user equipments.

According to the alternative embodiment of the present invention, base station further comprises,

Information transmitting unit, for sending the base station as thick schedule information during main system base station for its boss's frame;

Information receiving unit, for receiving the thick schedule information from other main system base stations.According to the alternative embodiment of the present invention, the thick scheduling unit of base station further comprises, the thick scheduling unit of main system, is directed to the coarse adjustment degree of its boss's frame as main system base station for performing:Main system base station distributes to the initial number of the resource block of overlay region group of user equipments and non-overlapped area's group of user equipments for determination according to its user equipment grouping information, and The initial distribution of these resource blocks;

The thick scheduling unit of subsystem, the coarse adjustment degree of next subframe is directed to for performing as subsystem base station:Subsystem is according to the initial distributions of the thick schedule information and its user equipment grouping information of main system, the initial number of the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and these resource blocks.

According to the alternative embodiment of the present invention, the thick scheduling unit of main system of base station, which performs coarse adjustment degree, will ensure that overlay region group of user equipments is transmitted or received in the resource block of boss's frame.

According to the alternative embodiment of the present invention, wherein, the thick scheduling unit of subsystem of base station performs coarse adjustment degree, further comprises:

Subsystem can not be reallocated to by distributing to the resource block of main system overlay region group of user equipments;

The resource block for distributing to the non-overlapped area's group of user equipments of main system is distributed into the non-overlapped area's group of user equipments of subsystem;

The overlay region group of user equipments and/or non-overlapped area's group of user equipments of subsystem can be distributed to by being not yet assigned to the resource block of main system group of user equipments.

According to the alternative embodiment of the present invention, wherein, the smart scheduling unit of base station is according to the output result of thick scheduling unit, criterion is eliminated according to interference set in advance, the wireless resource block for distributing to overlay region group of user equipments and non-overlapped area's group of user equipments is further distributed to the user equipment belonging to it.

Different from the interference cancellation mechanisms of those " property afterwards ", scheme proposed by the invention can carry out scheduling of resource to avoid interfering between system, so as to improve the spectrum efficiency of system by a small amount of coordinated manipulation between system before interference occurs.In addition, using scheme proposed by the invention, the scheduling of resource of boss's frame is divided into two steps of coarse adjustment degree and accurate adjustment degree.Only need to carry out limited cooperation between symbiotic system, transmit thick schedule information of a small amount of main system to its boss's frame;Furthermore, scheme proposed by the invention can greatly reduce interference odds, and thus be accordingly used in the resource spent by the Inter-System Informations such as transmission " reduction power leaves subframe " will drop significantly Brief description of the drawings

By the explanation below in conjunction with accompanying drawing, and as the more comprehensively understanding to the present invention, other objects of the present invention and effect will become clearer and it can be readily appreciated that wherein:

Fig. 1 represents the topology network schematic diagram that existing multisystem coexists in unlicensed spectrum.Fig. 2 represents existing and frame structure schematic diagram coexists.

Fig. 3 represents the scheduling of resource process schematic according to the spectra sharing system of an embodiment of the invention.

Fig. 4 represents to be grouped schematic diagram according to the user equipment of an embodiment of the invention.Fig. 5 represents the main system coarse adjustment degree result schematic diagram according to an embodiment of the invention.

Fig. 6 represents the coarse adjustment degree schematic flow sheet according to the subsystem of an embodiment of the invention.

Fig. 7 represents the architecture of base station schematic diagram according to an embodiment of the invention.

In all above-mentioned accompanying drawings, identical label is represented with identical, similar or corresponding feature or function.Embodiment

Embodiments of the present invention are specifically described below in conjunction with accompanying drawing.

Embodiments of the present invention are realized based on frequency language shared system, in terms of description, by taking the system of IEEE 802.16h standard criterions as an example, but above-mentioned setting is merely illustrative.Its application is not limited to IEEE 802.16h, and it can also be applied to solve the problems, such as the relevant interference of other frequency language shared systems, such as IEEE 802.16m systems and the relevant interference problem of lte-a system deployment.

According to the scheduling of resource process schematic of the spectra sharing system of an embodiment of the invention as shown in figure 3, first, at step S301, its SS points are overlay region SS and non-overlapped area SS by each BS.

User equipment packet can be carried out according to its GPS geographical position or other interference source recognition mechanisms, packet mode based on GPS needs extra GPS receivers to determine each SS position, and by their relative positions between symbiotic system calculate and recognize interference source and by Intruder.Obviously, the packet mode based on GPS is relatively simple, but its disturbance ecology precision is not high and cost is larger.Another relatively straightforward mode is using the disturbance ecology mode defined in 802.16h:If some SS is disturbed by neighbor system, the SS will be classified as overlay region SS;If some SS is not disturbed by any neighbor system, the SS will be classified as non-overlapped area SS.Overlay region SS relevant information after user equipment packet, interference source or interference victim as corresponding to it, and non-overlapped area SS information will be stored in the local data base of symbiotic system.Fig. 4 shows that just the blunt user equipment according to an embodiment of the invention is grouped schematic diagram for routine expression, according to Fig. 1 topology network schematic diagram, system A user equipment SS2 and SS3 is disturbed by system B, they will be classified as overlay region SS by system A, and corresponding intruder is system B;Similarly, system B SS9 and SS 10 will be classified as overlay region SS by system B, and corresponding intruder is system A.

At step S302, main system BS performs the thick scheduling process for its boss's frame according to grouping information:Such as user equipment grouping information includes overlay region SS number, corresponding traffic load and user fairness criterion, the thick scheduler program for its boss's frame is performed, for determining:Distribute to the initial number of overlay region SS resource blocks, and these resource blocks initial distribution.It is noted that thick scheduling result will remain unchanged during y subsequent MAC subframe(Y occurrence according to actual conditions by that can determine), and updated once per y MAC subframe.To avoid interference neighbors system or being disturbed by neighbor system, in this step, it is that should be ensured that overlay region SS can only be transmitted or be received using the resource block of boss's frame that the interference of the coarse adjustment degree of main system, which eliminates criterion,.

For example, pass through thick scheduling process, system A determines the initial distribution of the initial number and these resources of distributing to its overlay region SS group resources, the blunt main system coarse adjustment degree result schematic diagram according to an embodiment of the invention of expression ability exemplary Fig. 5.In the descending time slot of boss's frame, resource block(18) 1 60,1 will be to keep for overlay region SS groups(SS2 and SS3) it is used;Other resource blocks(36) 1 60,19 will keep for non-overlapped area SS groups(SS 1, SS4 and SS5) it is used.Similarly, in the ascending time slot of boss's frame, resource block(1 40,1-12) will be to keep for overlay region SS groups(SS2 and SS3) it is used;Other resource blocks (41 92,1-12) will keep for non-overlapped area SS groups(SS 1, SS4 and SS5) it is used.

At step S303, main system base station sends the thick schedule information to its boss's frame.These Sending for thick schedule information can be carried out by the IP connections on air interface or backstage.These thick schedule informations can be encapsulated in CXP (Coexistence Protocol, coexistence of systems agreement)Transmitted in information.It is noted that be not the specific scheduling result for each overlay region SS here, these thick schedule informations are the integrated scheduling results to all overlay region SS groups, therefore it is smaller to transmit stock number spent by thick schedule information.In some occasions, these thick schedule informations can be transmitted using " incidentally " mode, with the resource needed for further reducing.

At step S304, subsystem base station receives the thick schedule information for coming autonomous system base station, to boss's frame Radio Resource of main system(It is exactly time subframe for the subsystem)Perform thick scheduling process, i.e. subsystem base station is according to its user equipment grouping information and the thick schedule information of the main system received, it is determined that distributing to the initial number of the resource block of overlay region group of user equipments and non-overlapped area's group of user equipments, and the initial distribution of these resource blocks, specifically include:Subsystem can not be reallocated to by distributing to the resource block of main system overlay region group of user equipments;

The resource block for distributing to the non-overlapped area's group of user equipments of main system is distributed into the non-overlapped area's group of user equipments of subsystem;

The overlay region group of user equipments and/or non-overlapped area's group of user equipments of subsystem can be distributed to by being not yet assigned to the resource block of main system group of user equipments.

Fig. 6 represents the coarse adjustment degree schematic flow sheet according to the subsystem of an embodiment of the invention.In the schematic diagram, the subsystem coarse adjustment degree of ascending resource block and downlink resource block is described respectively.

Specifically, at step S601, subsystem base station receives the thick schedule information for coming autonomous system base station to its boss's frame;

At step S602, subsystem base station judges whether certain downlink resource block is idle in main system,

If idle, i.e., the downlink resource block is not allocated to the overlay region group of user equipments or non-overlapped area's group of user equipments of main system, then performs step S603:The resource block schedulable is to the overlay region group of user equipments belonging to subsystem base station and/or non-overlapped area's group of user equipments;If busy, i.e., the downlink resource block has been allocated, then performs step S604:Subsystem base station determines whether whether the resource block distributes to its overlay region user by main system Equipment group;

If not, the i.e. resource block is the non-overlapped area's group of user equipments for being assigned to main system, then step S605 is performed:Non-overlapped area's group of user equipments that the resource block can be scheduled to belonging to subsystem base station is used for downlink reception;

If it is, the i.e. resource block is the overlay region group of user equipments for being assigned to main system, then step S606 is performed:Subsystem base station can not carry out its descending transmission on the resource block;Then subsystem base station performs step S607, and subsystem base station judges whether certain ascending resource block is idle in main system,

If idle, i.e., the ascending resource block is not allocated to the overlay region group of user equipments or non-overlapped area's group of user equipments of main system, then performs step S608:The resource block schedulable is used for their uplink to the overlay region group of user equipments belonging to subsystem base station and/or non-overlapped area's group of user equipments;

If busy, i.e., the ascending resource block has been allocated, then performs step S609:Subsystem base station determines whether whether the resource block distributes to its overlay region group of user equipments by main system;

If not, the i.e. resource block is the non-overlapped area's group of user equipments for being assigned to main system, then step S610 is performed:Non-overlapped area's group of user equipments that the resource block can be scheduled to belonging to subsystem base station is used for the uplink of non-overlapped user equipment;

If it is, the i.e. resource block is the overlay region group of user equipments for being assigned to main system, then step S61 1 is performed:Any group of user equipments that the resource block can not be distributed to belonging to subsystem base station can not carry out its descending transmission on the resource block.

At step S305, main system base station performs smart scheduling process:The main system base station of subframe performs smart scheduler program according to coarse adjustment degree object information according to predetermined interference dispelling tactics, related resource is specifically distributed to its belonging to SS.That is, the resource block for distributing to overlay region SS groups is individually assigned to each overlay region SS group memberships again;The resource block for distributing to non-overlapped area SS groups is individually assigned to each overlay region SS group memberships again.For example, system A is by smart scheduling process, by the resource block of the descending time slot of boss's frame(6) 1 60,1 distribute to SS2;By the resource block of the descending time slot of boss's frame(18) 1 60,7 distribute to SS3.Smart scheduler program now is ensureing overlay region SS group memberships and non-overlapped on the premise of coarse adjustment degree Area ss group memberships can only be on the premise of their those resource blocks transmitting-receiving be pre-allocated, various dispatching criterions can be combined to realize, such as equitable proportion criterion, maximum C/I criterions, these existing dispatching criterions such as training in rotation scheduling, it is also contemplated that these SS business and priority carries out appropriate weighting;

At step S306, subsystem base station performs smart scheduler program, it is similar that the smart scheduling process of subsystem performs smart scheduling process with main system base station, according to the thick scheduling result of subsystem, perform smart scheduler program according to predetermined interference dispelling tactics, related resource is specifically distributed to its belonging to ss.Smart scheduler program now is on the premise of coarse adjustment degree, ensureing that overlay region SS group memberships and non-overlapped area SS group memberships can only be on the premise of their those resource blocks transmitting-receiving be pre-allocated, various dispatching criterions can be combined to realize, such as equitable proportion criterion, maximum C/I criterions, these existing dispatching criterions such as training in rotation scheduling, it is also contemplated that these SS business and priority carries out appropriate weighting.

It should be noted that, the scheduling of resource process of the spectra sharing system of above-mentioned combination Fig. 3 descriptions is applicable not only to a base station for main system base-station, other base stations are the spectra sharing system scheduling of resource of subsystem base station, same base station in spectra sharing system is applied equally to work during its boss's frame as main system base-station, and scheduling of resource in the case of for subsystem base station that secondarily worked during subframe.

Fig. 7 provides the architecture of base station schematic diagram according to an embodiment of the invention.

In embodiments of the present invention, base station 700 includes user equipment grouped element 701, thick scheduling unit 702, information transmitting unit 703, information receiving unit 704, smart scheduling unit 705.

Specifically, user grouping unit 701 is configured as being grouped the user equipment belonging to base station, its user equipment is grouped into overlay region user equipment and non-overlapped area's user equipment.User equipment grouping process is above having a detailed description, and will not be repeated here.

Thick scheduling unit 702 is configured as resource block distributing to its overlay region group of user equipments and non-overlapped area's group of user equipments;Further, thick scheduling unit 702 includes the thick scheduling unit 7021 of main system and the thick scheduling unit 7022 of subsystem.Wherein, the thick scheduling unit 7021 of main system, the coarse adjustment degree of its boss's frame is directed to for performing as main system base station:Main system base station according to its user equipment grouping information, for determine to distribute to overlay region group of user equipments and The initial number of the resource block of non-overlapped area's group of user equipments, and these resource blocks initial distribution.The thick scheduling unit 7021 of main system, which performs coarse adjustment degree, will ensure that overlay region group of user equipments is transmitted or received in the resource block of boss's frame.

Information transmitting unit 703 is configured as sending the base station as thick schedule information during main system base station for its boss's frame, i.e., send the result of the thick scheduling unit 7021 of main system.

Information receiving unit 704, is configured as receiving the thick schedule information from other main system base stations, and will receive thick schedule information and be output to the thick scheduling unit 7022 of subsystem.

The thick scheduling unit 7022 of subsystem, the coarse adjustment degree of next subframe is directed to for performing as subsystem base station:Subsystem is according to the initial distributions of the thick schedule information and its user equipment grouping information of the main system received, the initial number of the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and these resource blocks.The thick scheduling unit 7022 of subsystem performs coarse adjustment degree and followed:

1) subsystem ^ can not be reallocated to by distributing to the resource block of main system overlay region group of user equipments

2) resource block for distributing to the non-overlapped area's group of user equipments of main system is distributed into the non-overlapped area's group of user equipments of subsystem;

3) the overlay region group of user equipments and/or non-overlapped area's group of user equipments of subsystem can be distributed to by being not yet assigned to the resource block of main system group of user equipments.

Smart scheduling unit 705 is configured as further distributing overlay region group of user equipments and non-overlapped area's user equipment by the resource block for distributing to its overlay region group of user equipments and non-overlapped area's group of user equipments.Smart scheduling unit eliminates criterion according to interference set in advance, the wireless resource block for distributing to overlay region group of user equipments and non-overlapped area's group of user equipments is further distributed to the user equipment belonging to it according to the output result of thick scheduling unit.On the premise of coarse adjustment degree, ensureing that overlay region SS group memberships and non-overlapped area SS group memberships can only be on the premise of their those resource blocks transmitting-receiving be pre-allocated, various dispatching criterions can be combined to realize, such as equitable proportion criterion, maximum C/I criterions, these existing dispatching criterions such as training in rotation scheduling, it is also contemplated that these SS business and priority carries out appropriate weighting.

Using the resource scheduling scheme of the present invention, the scheduling of resource of subframe is divided into coarse adjustment degree and essence Dispatch two steps.Main system is according to packet situation, the initial number and the initial distribution of these resource blocks for determining overlay region SS groups/non-overlapped area SS group resource blocks by performing thick scheduling process to be used for.Main system and its adjacent subsystem pass through backstage or shared thick schedule information of eating dishes without rice or wine.On this basis, main system and subsystem perform accurate adjustment degree according to certain criterion.Different from the interference cancellation mechanisms of those " property afterwards ", mechanism proposed by the invention can be prevented effectively from interference before interference occurs.Furthermore, thick schedule information is the integrated scheduling result to all overlay region SS groups/non-overlapped area SS groups, is not the specific scheduling result for each overlay region SS, therefore it is smaller to transmit stock number spent by thick schedule information.

Different from the interference cancellation mechanisms of those " property afterwards ", the mechanism as defined in 802.16h, scheme proposed by the present invention can be effectively prevented from interfering between system before interference occurs.Because, it is preferential when subsystem performs smart scheduling strategy during secondary subframe to ensure not produce interference to main system.In general, symbiotic system needs to be mutually in step to each other, and scheduling process is performed simultaneously.In other words, some system can not possibly remake out oneself scheduling to this subframe to the schedule information of some subframes according to the neighbor system received.But, according to scheme proposed by the present invention, thick schedule information is not specifically to distribute to some SS resource allocation information, and it is only the overall scheduling of resource result of all overlay region SS groups/non-overlapped area SS groups, only include the initial number of these resources and the initial distribution of these resources.Therefore, thick schedule information can keep constant in subsequent multiple MAC subframes, and the foundation that can be avoided by neighbor system when accurate adjustment is spent as interference.Further, since only only small amounts of thick schedule information needs to be transmitted between system, therefore eating dishes without rice or wine of being consumed or backstage IP link circuit resources are less.3rd, scheme proposed by the invention can greatly reduce interfering between system, so that system startup power controlling mechanism is greatly reduced to reduce the probability of interference.In the case, it will be substantially reduced for transmitting the resource spent by Inter-System Informations such as " reduction power leave subframe ".

The present invention can be realized with hardware, software, firmware and combinations thereof.One skilled in the art would recognize that the present invention is embodied in computer program product that can also be set on the signal bearing medium used for any suitable data processing system.This signal bearing medium can be transmission medium or the recordable media for machine sensible information, including magnetizing mediums, optical medium or other suitable medias.The example of recordable media includes:Hard disk drives Disk or floppy disk, the CD for CD-ROM drive, tape in dynamic device, and other thinkable media of those skilled in the art institute.One skilled in the art would recognize that the step of any communication equipment with suitable programmed device is all possible to perform the inventive method as embodied in program product.

From foregoing description it should be understood that without departing from the spirit of the invention, each embodiment of the invention can be modified and changed.Description in this specification is only used for illustrative, and is not considered as restricted.The scope of the present invention should only be limited by the claims included below.

Claims (1)

  1. Claims
    1. a kind of resource regulating method of frequency language shared system, the frequency language shared system includes multiple symbiotic systems, each symbiotic system includes having a main system at least one base station and at least two user equipmenies, each boss's frame, and others are subsystem;Wherein, methods described includes,
    Its user equipment is grouped into overlay region user equipment and non-overlapped area's user equipment by each base station;
    Main system base station performs thick scheduling process to the Radio Resource of its boss's frame, by respective wireless resource allocation is to its overlay region group of user equipments and non-overlapped area's group of user equipments and sends its coarse adjustment degree object information;
    Subsystem base station receives the thick schedule information for carrying out autonomous system, according to the thick scheduling result in main system base station, thick scheduling process is performed to boss's frame Radio Resource of main system, its overlay region group of user equipments and non-overlapped area's group of user equipments are given by respective wireless resource allocation;
    Main system base station performs smart scheduler program, by respective wireless resource allocation to the user equipment belonging to it according to its coarse adjustment degree object information to the Radio Resource of its boss's frame;
    Subsystem base station performs smart scheduler program, by respective wireless resource allocation to the user equipment belonging to it according to its coarse adjustment degree object information to boss's frame Radio Resource of main system.
    2. according to the method described in claim 1, wherein, the execution of main system base station refers to main system base station according to its user equipment grouping information for the thick scheduling process of its boss's frame, initial distribution for the initial number for the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and these resource blocks.
    3. method according to claim 2, main system base station execution will ensure that overlay region group of user equipments is transmitted or received in the resource block of boss's frame for the coarse adjustment degree of its boss's frame.
    4. the method according to claim 1-3, wherein, subsystem is according to the thick schedule information of main system, thick scheduling process is performed to boss's frame Radio Resource of main system, refer to thick schedule information and its user equipment grouping information of the subsystem base station according to main system, for determine distribute to overlay region group of user equipments and non-overlapped area's group of user equipments resource block it is initial Number, and these resource blocks initial distribution, specifically include:
    Subsystem can not be reallocated to by distributing to the resource block of main system overlay region group of user equipments;
    The resource block for distributing to the non-overlapped area's group of user equipments of main system is distributed into the non-overlapped area's group of user equipments of subsystem;
    The overlay region group of user equipments and/or non-overlapped area's group of user equipments of subsystem can be distributed to by being not yet assigned to the resource block of main system group of user equipments.
    5. the method according to claim 1-4, wherein, smart scheduling process refers to be based on thick scheduling result, criterion is eliminated according to interference set in advance, the wireless resource block for distributing to overlay region group of user equipments and non-overlapped area's group of user equipments is further distributed to the user equipment belonging to it.
    6. the method according to claim 1-5, wherein, user equipment is divided into by overlay region user equipment and non-overlapped area's user equipment according to interference source recognition mechanism:Overlay region user equipment refers to the user equipment disturbed by neighbor system;Non-overlapped area's user equipment refers to the user equipment not disturbed by neighbor system.
    7. the method according to claim 1-5, wherein, user equipment is divided into by overlay region user equipment and non-overlapped area's user equipment according to the packet mode in GPS geographical position.
    8. the resource regulating method of-kind of frequency language shared system, the frequency language shared system includes multiple symbiotic systems, each symbiotic system includes at least one base station and at least two user equipmenies, base station is worked during its boss's frame as main system base-station, is worked during it is from subframe as subsystem base station;Wherein, methods described includes,
    Its user equipment is grouped into overlay region user equipment and non-overlapped area's user equipment by base station;
    Base station performs thick scheduling process to the Radio Resource of its boss's frame, by respective wireless resource allocation is to its overlay region group of user equipments and non-overlapped area's group of user equipments and sends its coarse adjustment degree object information;
    Base station performs smart scheduler program, by respective wireless resource allocation to the user equipment belonging to it according to the coarse adjustment degree object information of the Radio Resource to its boss's frame to the Radio Resource of its boss's frame; Base station receives the thick schedule information from other main system base stations, according to other thick scheduling results in main system base station, thick scheduling process is performed from the Radio Resource of subframe to it, its overlay region group of user equipments and non-overlapped area's group of user equipments are given by respective wireless resource allocation;
    Base station, from the coarse adjustment degree object information of the Radio Resource of subframe, performs smart scheduler program, by respective wireless resource allocation to the user equipment belonging to it to it according to it from the Radio Resource of the Radio Resource of subframe.
    9. method according to claim 8, wherein, base station performs thick scheduling process to the Radio Resource of its boss's frame and refers to base station according to its user equipment grouping information, initial distribution for the initial number for the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and these resource blocks.
    10. the method according to claim 9, base station performs coarse adjustment degree to the Radio Resource of its boss's frame will ensure that overlay region group of user equipments is transmitted or received in the resource block of boss's frame.
    1 1. method according to claim 8-10, wherein, base station performs thick scheduling process to it from subframe Radio Resource, refer to subsystem base station according to its user equipment grouping information and the thick schedule information of other main system base stations, for the initial number for the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and the initial distribution of these resource blocks, specifically include:
    Subsystem can not be reallocated to by being already allocated to the resource block of other main system overlay region group of user equipments;
    The resource block for distributing to the non-overlapped area's group of user equipments of other main systems is distributed into the non-overlapped area's group of user equipments of subsystem;
    The overlay region group of user equipments and/or non-overlapped area's group of user equipments of subsystem can be distributed to by being not yet assigned to the resource block of other main system group of user equipments.
    12. the method according to claim 8-1 1, wherein, smart scheduling process refers to be based on thick scheduling result, criterion is eliminated according to interference set in advance, the wireless resource block for distributing to overlay region group of user equipments and non-overlapped area's group of user equipments is further distributed to the user equipment belonging to it.
    13.-kind of base station, is operated in spectra sharing system, the base station includes: User grouping unit, for its user equipment to be grouped into overlay region user equipment and non-overlapped area's user equipment;
    Thick scheduling unit, for resource block to be distributed into its overlay region group of user equipments and non-overlapped area's group of user equipments;
    Smart scheduling unit, for further distributing overlay region group of user equipments and non-overlapped area's user equipment by the resource block for distributing to its overlay region group of user equipments and non-overlapped area's group of user equipments.
    14. base station according to claim 13, further comprises,
    Information transmitting unit, for sending the base station as thick schedule information during main system base station for its boss's frame;
    Information receiving unit, for receiving the thick schedule information from other main system base stations.
    15. base station according to claim 14, the thick scheduling unit further comprises, the thick scheduling unit of main system, the coarse adjustment degree of its boss's frame is directed to as main system base station for performing:Main system base station is according to its user equipment grouping information, the initial number of the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and these resource blocks initial distribution;
    The thick scheduling unit of subsystem, the coarse adjustment degree of next subframe is directed to for performing as subsystem base station:Subsystem is according to the initial distributions of the thick schedule information and its user equipment grouping information of main system, the initial number of the resource block for determining to distribute to overlay region group of user equipments and non-overlapped area's group of user equipments, and these resource blocks.
    16. base station according to claim 15, the thick scheduling unit of main system, which performs coarse adjustment degree, will ensure that overlay region group of user equipments is transmitted or received in the resource block of boss's frame.
    17. method according to claim 16, wherein, the thick scheduling unit of subsystem performs coarse adjustment degree, further comprises:
    Subsystem can not be reallocated to by distributing to the resource block of main system overlay region group of user equipments;
    The resource block for distributing to the non-overlapped area's group of user equipments of main system is distributed into the non-overlapped area's group of user equipments of subsystem;
    The overlay region of subsystem can be distributed to by being not yet assigned to the resource block of main system group of user equipments Group of user equipments and/or non-overlapped area's group of user equipments.
    18. base station according to claim 17, wherein, smart scheduling unit is according to the output result of thick scheduling unit, criterion is eliminated according to interference set in advance, the wireless resource block for distributing to overlay region group of user equipments and non-overlapped area's group of user equipments is further distributed to the user equipment belonging to it.
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