CN102598771A - Method and system for resource scheduling - Google Patents

Method and system for resource scheduling Download PDF

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Publication number
CN102598771A
CN102598771A CN201080046805XA CN201080046805A CN102598771A CN 102598771 A CN102598771 A CN 102598771A CN 201080046805X A CN201080046805X A CN 201080046805XA CN 201080046805 A CN201080046805 A CN 201080046805A CN 102598771 A CN102598771 A CN 102598771A
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femtocell
macrocell
resource
current
elastic trough
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CN102598771B (en
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邱吉刚
杨峰
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Nokia Shanghai Bell Co Ltd
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Alcatel Lucent Shanghai Bell Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method and a system for resource scheduling are provided in the present invention. The method includes: a User Equipment (UE) serviced by a macrocell sends an interference indication message to the macrocell; the macrocell receives the interference indication message and determines the group of the current femtocell and the size and the distribution of the corresponding flexible reservation zone, wherein the interference exists between the UE and the current femtocell; the macrocell sends a resource reservation request message to the current femtocell, the request message includes the information of the size and the distribution of the flexible reservation zone; the current femtocell receives the resource reservation request message, adjusts the flexible reservation zone according to the request message, and sends a resource reservation response message to the macrocell; and the macrocell receives the resource reservation response message and schedules the resources of the fexible reservation zone to the UE during the following resource scheduling. With the method and the system of the present invention, the Flexible Reservation Zone (FRZ) is able to be reserved dynamically by the limited coordination between the femtocell and the macrocell. In this way, even if a UE has no right to access a femtocell, the interference between the UE and the femtocell is able to be avoided, therefore the system performance is enhanced, and the quality of service is ensured.

Description

Method and system for resource scheduling
Resource regulating method and system
Technical field
Embodiments of the invention are related to communication technical field, specifically related to a kind of resource regulating method and system, it can be by carrying out scheduling of resource in the Macrocell for being embedded with one or more Femtocell, it is to avoid interfering between Macrocell and Femtocell.Background technology
In the communication system of current and future, such as LTE/LTE-A, the area of coverage and be communication equipment business, communication service provider and user's facing challenges all the time the problems such as " 3dB decay ".For these problems, it has been proposed that a variety of solutions, including relaying, directional beam, transponder, Femtocell (pico cells）Etc. technology, wherein, Femtocell technologies are by using cell splitting or embedded cellular technology, it is possible to increase coverage areas and power system capacity, more and more paid close attention to so as to receive the operator of communication system, service provider and R＆D Professional.
It is used as an emerging technology, Femtocell is before putting it into commercial operation, also some technical problems need to solve, consideration, self-configuring and interference management in terms of including the network architecture etc., interference especially how is effectively prevented from during Femtocell technologies are used, is one of technical problem urgently to be resolved hurrily.
Referring to Fig. 1, illustrate the interference problem occurred during using Femtocell technologies.Fig. 1 shows Femtocell and Macrocell (macrocells）Between interference.As shown in figure 1, embedded in Femtocell in the Macrocell area of coverage, user equipment (UE) 101 is serviced by Femtocell, and user equipment (UE) 102 is serviced by Macrocell.By identical air interface, Femtocell is connected with user equipment (UE) 101, and is connected using broadband IP back haul link with the network of mobile communication carrier.The UE102 serviced by Macrocell is located near Femtocell access points AP, its may by the emitter from Femtocell AP dl interference, and the receiver formation uplink interference that it may be to Femtocell AP.These interference can reduce power system capacity, and the normal of influence user equipment is used.
For above-mentioned interference problem, current many research institutions and standardization body, including 802.16 and 3GPP, are directed to research and Jian sends out settlement mechanism corresponding.
3GPP and Femto Forum propose two kinds of solutions, i.e. dynamic power control（) and handover mechanism DPC. According to DPC mechanism, system can adjust its transmission power, to adapt to radio environment.This method can only reduce interfering between Femtocell and Macrocell to a certain extent, and can not avoid or eliminate completely.Further, it should be noted that when using DPC mechanism, another interference may be caused for handling a kind of DPC of interference.For example, when Femtocell UE are just by Macrocell BS (base stations）Interference when, increase its transmission power to being adapted to property of Femtocell AP, to improve radio link quality；But, due to increasing transmission power, Radio Link may produce interference to neighbouring Macrocell UE.
According to handover mechanism, when Macrocell UE enter the Femtocell area of coverage and are thus disturbed by Femtocell AP, the Macrocell UE can be switched to Femtocell, and by carrying out transmitting/reception of service message with Femtocell AP air interface.So, the UE becomes the UE of Femtocell services, and its transmitting/reception is controlled by Femtocell AP, so that any interference will not be produced between Femtocell AP.Correspondingly, when outside the UE is moved to the Femtocell area of coverage, the Femtocell AP can switch back to Macrocell, and service is provided by Macrocell.
In above-mentioned handover mechanism, interfering between Femtocell and Macrocell still can not avoid or eliminate completely.Although by switch to Femtocell, UE can avoid being disturbed by from Femtocell AP, be due to that UE is no longer serviced by Macrocell, it may be disturbed by from Macrocell, and vice versa.
In addition, it is contemplated that the wish and security of user, current Femtocell access module is typically non-open type.For example, the Closed User Group proposed according to 3GPP（Closed Subscriber Group, CSG) pattern, some CSG Femtocell AP can only service the Member Users of the CSG.Therefore, the non-member user or UE of unauthorized can not switch to the CSG Femtocell, it is impossible to obtain the service of the CSG Femtocell.In this case, when the user of unauthorized is near Femtocell AP or in the Femtocell areas of coverage, interfering between Femtocell and Macrocell is still very serious.This problem is exactly CSG Femtocell " dead bands urgently to be resolved hurrily in 3GPP（Dead Zone) " problem, as indicated by a broken line in fig. 1.
Accordingly, it would be desirable to which a kind of deployment for Femtocell, can avoid mutual thousand methods disturbed between Femtocell and Macrocell.The content of the invention
In view of the above problems, the present invention proposes a kind of resource regulating method and system, and scheduling of resource can be carried out in the Macrocell for being embedded with one or more Femtocell.This method and system use resource reservation mechanism, elastic trough are defined for Femtocell or Femtocell groups, when what is serviced by Macrocell UE enters the Femtocell area of coverage, detects and interferes but when can not switch to Femtocell, UE can send interference indication message to Marocell, Marocell can be according to the message, it is required that corresponding Femtocell adjusts the elastic trough of itself, so as to only by the scheduling of resource of elastic trough to UE in subsequent scheduling of resource, UE can use the resource of elastic trough to carry out the operation such as data transmission/reception, so as to avoid the interference with Femtocell.
According to an aspect of the present invention, it is proposed that a kind of resource regulating method, for carrying out scheduling of resource in the Macrocell for being embedded with one or more Femtocell, methods described includes：
The user equipment (UE) that Macrocell is serviced sends interference indication message to Macrocell, and the interference indication message, which is indicated, has interference between one of UE and one or more of Femtocell；
Macrocell receives interference indication message, and according to interference indication message, it is determined that there is size and the distribution of the current Femtocell of interference elastic trough between UE, the Femtocell that elastic trough represents to be embedded in Macrocell keeps for the resource by the Macrocell UE serviced into the Femtocell area of coverage；
Macrocell sends resource reservation request message to current Femtocell, and the request message includes the size about elastic trough and the information of distribution；
Current Femtocell receives resource reservation request message, according to the request message, the elastic trough of adjustment, and sends resource reservation response message to Macrocell；And
Macrocell receive resource reservation response message, and in subsequent scheduling of resource by the scheduling of resource of elastic trough to UE so that UE can use the resource of elastic trough to carry out data transmission.
According to embodiments of the present invention, the UE that Macrocell is serviced is when entering the current Femtocell area of coverage, if detecting and there is interference between current Femtocell, and judge that current Femtocell can not be switched to, then send interference indication message.
According to embodiments of the present invention, one or more of Femtocell are the Femtocell of Closed User Group's CSG types,
The permission preserved on the more current Femtocell of UE that Macrocell is serviced CSG ID and UE
CSG list, if current Femtocell CSG ID are not in CSG list is allowed, judgement can not be switched to current Femtocell.
According to embodiments of the present invention, the UE that Macrocell is serviced obtains current Femtocell CSG ID by receiving CSD ID from current Femtocell, encapsulating current Femtocell system broadcast information.
According to embodiments of the present invention, Macrocell is current to determine according to one or more of following factor The size of Femtocell elastic trough：Current radio environment；In the current Femtocell area of coverage but by the Macrocell UE serviced number；These by the Macrocell UE serviced average data portfolio；Current Femtocell previous elastic trough size.
According to embodiments of the present invention, elastic trough is made up of resource block.
According to embodiments of the present invention, if being embedded with multiple Femtocell in Macrocell, the plurality of Femtocell is grouped in advance, same group of Femtocell shares the elastic trough of identical,
Before Macrocell determines size and the distribution of elastic trough, Macrocell determines which group current Femtocell belongs to, to determine size and the distribution of elastic trough for the group.
According to embodiments of the present invention, if being embedded with multiple Femtocell in Macrocell, then before Macrocell determines size and the distribution of elastic trough, the plurality of Femtocell is grouped, and determine which group current Femtocell belongs to, to determine size and the distribution of elastic trough for the group
Wherein, same group of Femtocell shares the elastic trough of identical.
According to embodiments of the present invention, multiple Femtocell. are grouped based on geographical position.
According to embodiments of the present invention, in subsequent scheduling of resource, the scheduling of resource of non-resilient trough is only given the current Femtocell UE serviced by current Femtocell.
According to embodiments of the present invention, the size of elastic trough and distribution are semi-static.Femtocell elastic trough keeps constant after being adjusted, within a predetermined period of time, but is periodically updated.
According to embodiments of the present invention, Macrocell and current Femtocell carries out message communicating via IP back haul links.
According to a further aspect of the invention, it is proposed that a kind of resource scheduling system, including：
Macrocell ,
One or more of Macrocell Femtocell are embedded in, and
The UE that Macrocell is serviced,
Wherein, the user equipment (UE) that Macrocell is serviced is configured as：Interference indication message is sent to Macrocell, the interference indication message, which is indicated, has interference between one of UE and one or more of Femtocell；
Macrocell is configured as：Receive the interference indication message from UE, and according to interference indication message, it is determined that there is size and the distribution of the current Femtocell of interference elastic trough between UE, the Femtocell that elastic trough represents to be embedded in Macrocell keeps for the resource for the UE that Macrocell serviced；Resource reservation request message is sent to current Femtocell, the request message is included about the big of elastic trough Small and distribution information；And, receive the resource reservation response message from current Femtocell, and in subsequent scheduling of resource by the scheduling of resource of elastic trough to UE so that UE can use the resource of elastic trough to carry out data transmission；
One or more FemtocellFemtocell are configured as：The resource reservation request message from Macroell is received, according to the request message, the elastic trough of adjustment, and send resource reservation response message to Macrocdl.
The invention has the advantages that.Interference between first, Femtocell system can reduce power system capacity, damage service quality.Resource reservation mechanism can solve to interfere problem, particularly dead-time problem between Femtocell systems.Second, define a kind of new elastic trough, its can including subframe etc. resource block.The size of elastic trough is determined according to many factors by Macrocdl, and is semi-static, so can adapt to many factors such as current radio environment.3rd, strengthen the adaptation of the dynamic for the flexibility of UE progress scheduling of resource and to loads of data traffic using Femtocell grouping mechanisms.If specifying fixed proprietary elastic trough to each Femtocell, ample resources block may be caused to be fixed to the Macrocell UE carried out into the Femtocell areas of coverage.In such a case it is difficult to perform UE scheduling of resource, also can seriously it be reduced by dispatching the multi-user diversity gain obtained.Using grouping mechanism, same group of multiple Femtocell can share the elastic trough of identical, so as to shared elastic trough between this group of Femtocell all UE of the area of coverage are entered, so, elastic trough can be dispatched between more Macrocell UE, factor data business load dynamic change can be minimized and cause to transmit adaptation issues.4th, interference avoidance mechanism of the invention needs only to the limited coordination between Macrocell and Femtocell.On the one hand, it is only necessary to by the size of the elastic trough of IP back haul links transmission/reception and distribution for information about.On the other hand, the size of elastic trough and distribution are semi-static, i.e. keep constant on the time of subsequent certain length, it is only necessary to be periodically updated.It is also smaller for the signalling Jian pins of resource reservation.Brief description of the drawings
It is by illustrating the preferred embodiments of the present invention below in conjunction with the accompanying drawings, the above and other objects, features and advantages for making the present invention are clearer, wherein：
Fig. 1 shows adaptable environment of the invention, wherein diagrammatically illustrating the interference between Femtocell and Macrocell.
Fig. 2 shows the example of FRZ size and the relation of the number of the unauthorized Macrocell UE in the Femtocell areas of coverage. Fig. 3 shows the schematic diagram of packet-based resource reservation mechanism in the present invention.
Fig. 4 shown under the application environment shown in Fig. 1, the scheduling of resource process that resource scheduling system according to embodiments of the present invention is performed.Embodiment
The present invention uses resource reservation mechanism, define elastic trough, the interference indication message that Marocell can be sent according to the UE of its service, it is required that corresponding Femtocell adjusts the elastic trough of itself, so as to only by the scheduling of resource of elastic trough to UE in subsequent scheduling of resource.So, Femtocell can only dispatch the resource of non-resilient trough to its UE serviced, and Marocell also only dispatches other resources to its other UE serviced.UE can use the resource of elastic trough to carry out the operation such as data transmission/reception, so as to avoid interfering between Marocell and Femtocell.
In order to clearly illustrate the present invention, elastic trough is illustrated first.As described above, the present invention uses resource reservation mechanism, elastic trough is defined for Femtocell（Flexible Reservation Zone, hereinafter referred to as FRZ).When the UE serviced by Macrocell enters the Femtocell area of coverage, especially into CSG Femtocell " dead band " when, because it can not switch to Femtocell, so as to cause to interfere with Femtocell.Hereinafter, this UE is referred to as unauthorized Macrocell UE.According to the present invention, due to defining FRZ for Femtocell, so corresponding Femtocell can adjust the FRZ of itself, so that Macrocell can be in subsequent scheduling of resource only by FRZ scheduling of resource to UE, UE can use the resource of elastic trough to carry out the operation such as data transmission/reception, so as to avoid the interference with Femtocell.It can be seen that, FRZ substantially represents that the Femtocell being embedded in Macrocell keeps for the resource by the Macrocell UE serviced into the Femtocell area of coverage.FRZ can be made up of resource blocks such as subframes.FRZ size can be determined by Macrocell according to current radio environment, current unauthorized Macrocell UE quantity, each unauthorized Macrocell UE average data portfolio, previous FRZ sizes or/and other many factors.As an example, FRZ sizes can be determined according to below equation：
SFRZ i^ew = fFRZ (XMUE , XTra]rw , X0) + SFRZ (Old)
Wherein, SFRZ(New) the FRZ sizes currently to be determined, f are representedFRZ() represents the function of adjustment FRZ sizes, XMUERepresent current unauthorized Macrocell UE quantity, XTrafficRepresent each unauthorized Macrocell UE average data portfolio, X0Represent other factors, SFRZ(01d) represents previous FRZ sizes. In general, the number of the unauthorized Macrocell UE in the Femtocell areas of coverage is more, FRZ size is bigger.As shown in Fig. 2, unauthorized Macrocell UE are not present in the moment 1, the Femtocell areas of coverage, therefore FRZ does not include any resource block.There is unauthorized Macrocell a UE, UE10, FRZ in the moment 2, the Femtocell areas of coverage can for example include 2 resource blocks.Equally, at the moment 3, two ' unauthorized Macrocell UE, UE10 standing grain Jie UE20, in the Femtocell areas of coverage, FRZ includes can be with 4 resource blocks, at moment 4, three unauthorized Macrocell UE, UE10, UE20, UE30, in the Femtocell areas of coverage, FRZ includes can be with 6 resource blocks.Fig. 2 illustrate only the example of FRZ size and the relation of the number of the unauthorized Macrocell UE in the Femtocell areas of coverage, and this relation can also be linear or nonlinear in practice；Also, when in view of other many factors, the change of FRZ sizes can be any appropriate type.
According to embodiments of the present invention, FRZ size and distribution can be semi-static, SP, after Femtocell adjusts its FRZ according to Macrocell resource reservation request message, keep FRZ size and distribution constant within a predetermined period of time, but be periodically updated.For example, keeping constant during may be set in a then frame, i.e., updated by the cycle of individual frame.It can be random natural number.So, during subsequent frame, FRZ resource block schedulings can be given corresponding unauthorized Macrocell UE by Macrocell.Value can be specific for service provider, and/or can be predetermined according to practical application request.
Because FRZ size and distribution are semi-static, BP, keep constant on the time of subsequent certain length, it is only necessary to be periodically updated, so the signalling expense for resource reservation can be with smaller.
The foregoing describe the FRZ defined for single Femtocell.The present inventors have noted that, if respectively specifying that proprietary FRZ to each single Femtocell, i.e., the FRZ can only be scheduled to the unauthorized Macrocell UE into the area of coverage of the Femtocell, then ample resources block may be caused to be fixed to some Macrocell UE.In this case, Macrocell is difficult to each UE execution scheduling of resource of its service, the flexibility of scheduling of resource can be seriously reduced, so that the multi-user diversity gain that seriously reduction is obtained by scheduling of resource.In addition, because the dynamic of loads of data traffic is very strong, the resource block needed for some Macrocell UE may change with time and different.On the one hand, if the Macrocell UE need not transmit any data service in certain time period, these resource blocks just give over to unused, result in the waste of resource block；On the other hand, if very high in other times section Macrocell UE data business volume, and these resource blocks are not enough to transmitting data service, then may increase data transfer delay, compromise QoS of customer. In view of the above-mentioned problems, the present invention proposes packet-based resource reservation mechanism.According to embodiments of the present invention, it is grouped for embedded Macrocell multiple Femtocell.They can be grouped according to whether there is unauthorized Macrocell UE or other metrics in Femtocell geographical position, the Femtocell areas of coverage.The packet can preassigned or Macrocell perform scheduling of resource during dynamically carry out.Fig. 3 shows the schematic diagram of packet-based resource reservation mechanism.As shown in figure 3, any Macrocell UE are not present near Femtocell 2, shellfish ij Femtocell 2 can not be divided into any group, i.e. without FRZ.Other Femtocell are divided into 3 groups：Group 1 includes the standing grain mouthful Femtocell 3 of Femtocell 1, its shared FRZ1, and FRZ1 can be shared hence into the unauthorized Macrocell UE1-UE4 of Femtocell 1 or Femtocell 3 area of coverage;Group 2 only includes Femtocell 4, and FRZ2 is shared hence into the unauthorized MacrocellUE5 and UE6 of Femtocell 4 area of coverage;Group 3 includes Femtocell 5 and Femtocell 6, its shared FRZ3, therefore enters the shared FRZ3 of the unauthorized Macrocell UE7-UE9 of Femtocell 5 or Femtocell 6 area of coverage.It will be understood by those skilled in the art that dispatching more Macrocell UE during FRZ, problem is transmitted caused by above-mentioned factor data business load dynamic change will be easier to be resolved.
Thus, Macrocell can according to the situation of each Femtocell group, to determine the FRZ of each Femtocell group, and can between all unauthorized Macrocell UE of some Femtocell group are entered progress FRZ resource blocks scheduling.For example, referring to Fig. 3, the group 1 constituted for Femtocell 1 and Femtocell 3, when thering are new unauthorized Macrocell UE to enter Femtocell 1 and sending interference configured information, Macrocell can determine which group Femtocell 1 belongs to first, and according to current radio environment, current unauthorized Macrocell UE quantity in Femtocell 1 and Femtocell 3 area of coverage, each unauthorized Macrocell UE average data portfolio, 1 previous FRZ sizes or/and other many factors is organized to determine current FRZ1 size, then after Femtocell 1 adjusts its FRZ1, the resource blocks of FRZ 1 are dispatched between new unauthorized Macrocell UE and the already present-UE4 of unauthorized Macrocell UE 1, so, the adaptation of the dynamic for the flexibility of UE progress scheduling of resource and to loads of data traffic can be strengthened.
It may occur to persons skilled in the art that, Femtocell number can be arbitrary in each Femtocell groups, and can adjust according to the actual requirements.
FRZ according to embodiments of the present invention has been described in detail above, referring to the drawings 1 and 4, resource regulating method according to embodiments of the present invention and system is described in detail.In the following description, using 3GPP LTE wireless communications application environment.It should be noted that embodiments of the invention are not limited to these applications, but can Suitable for more other related communications applications environment.In addition, it may occur to persons skilled in the art that, Macrocell during scheduling of resource according to embodiments of the present invention, Femtocell operation can be respectively by Macrocell base stations or enhancing base station, Femtocell AP be come realizing or realized by any suitable device in accordance with the principles of the present invention.In description of the invention and its claims, " Macrocell " is equal to " Macrocell base stations or enhancing base station ", and " Femtocell " is equal to " Femtocell AP ".
Referring again to shown in Fig. 1, Femtocell is embedded in the Macrocell area of coverage, UE101 is serviced by Femtocell, and UE102 is serviced by Macrocell.UE102 is located near Femtocell AP, blunt P, enters the Femtocell areas of coverage, and interfere with Femtocell AP presence.According to embodiments of the present invention, Femtocell can be CSG types, and UE102 is can not to switch to Femtocell unauthorized Macrocell UE.Although it is appreciated that illustrate only single Femtocell and single unauthorized Macrocell UE in Fig. 1, this is for the purposes of clarity.According to embodiments of the present invention, it can be embedded in the Macrocell area of coverage in multiple Femtocell, each Femtocell area of coverage and there may be multiple unauthorized Macrocell UE, situation as shown in Figure 3.
Fig. 4 shown under the above-mentioned application environment as example, the scheduling of resource process that resource scheduling system according to embodiments of the present invention is performed.It is unnecessary details and function for the present invention to eliminate in the course of the description, to prevent the understanding of the present invention from causing to obscure.
The resource scheduling system of the embodiment of the present invention can include Macrocell, be embedded in one or more of Macrocell Femtocell, and the UE that Macrocell is serviced.With reference to Fig. 1 and Fig. 4, as an example, resource scheduling system can include Macrocell, Femtocell and UE 102.It is to be appreciated that the UE that Femtocell is serviced can also be included in system, and the Femtocell and UE example numbers in a unlimited number shown in figure.
The scheduling of resource process that the resource scheduling system of the embodiment of the present invention is performed is described below.
First, in step S400, UE102 services Macrocell to it and sends interference indication message, and the interference indication message, which is indicated, has interference between UE and Femtocell.
According to embodiments of the present invention, UE102 can send interference configured information in the case where there.
When UE102 enters the Femtocell area of coverage, UE102 can be by CPICH Common Pilot Channel CPICH is measured or other are conventional measurement, with the presence or absence of interference between detection and Femtocell, if there is interference, may determine whether in UE102 can be by performing cell reselection/switching, to be switched to Femtocell, so as to be serviced by Femtocell, it is to avoid cause/disturbed.For example, if Femtocell is the Femtocell of CSG types, UE102 can be after the broadcast channel synchronisation with Femtocell, and reception comes from Femtocell AP broadcast system information, wherein encapsulating the CSG ID of the Femtocell.UE102 can be by the way that the CSG received ID " the allowing CSG list " stored with itself be compared, and Femtocell can be switched to by determining whether its own is authorized to.Preferably, " allowing CSG list " can be stored in UE102 subscriber identity module SIM or universal subscriber identity module USIM.If CSG ID are in " allowing CSG lists ", it is to be authorized to that Femtocell can be switched to then to illustrate UE102, so, UE can perform conventional cell reselection/handoff procedure, to be switched to Femtocell, so as to be serviced by Femtocell, it is to avoid cause/disturbed.Conversely, if CSG ID are not in " allowing CSG list ", then UE102 is can not to be switched to Eemtocell unauthorized Macrocell UE, now, according to embodiments of the present invention, UE102 services Macrocell to it and sends interference indication message, to initiate the scheduling of resource process for employing resource reservation mechanism (FRZ) of the present invention.
In addition it is also possible to which according to practical application request, scheduling of resource process according to embodiments of the present invention is initiated by UE under the conditions of certain of setting.The invention is not restricted to the situation of above-mentioned example, but other any applicable cases that can be envisaged that can be included.
In step S402, Macrocell receives interference indication message, and according to interference indication message, it is determined that there is the Femtocell of interference FRZ sizes and distribution between UE102.Macrocell can be by considering Multiple factors, for example current radio environment, unauthorized Macrocell UE number, each unauthorized Macrocell UE average data business, original FRZ size and other related factors, determine FRZ size.
In addition, grouping mechanism as described above, if being embedded with multiple Femtocell in Macrocell, preferably, the plurality of Femtocell can be then grouped previously according to factors such as geographical position, same group of Femtocell shares identical FRZ.Before Macrocell determines size and the distribution of elastic trough, Macrocell determines which group current Femtocell belongs to, to determine size and the distribution of elastic trough for the group, i.e., in view of unauthorized Macrocell UE number, each unauthorized Macrocell UE average data business, the original FRZ of group size and other related factors in such as current radio environment, the group, FRZ size is determined.Alternately, Femtocell can not be what is be grouped in advance, but then before Macrocell determines size and the distribution of elastic trough, the plurality of Femtocell is grouped in real time by Macrocell, and determine which group current Femtocell belongs to, to determine size and the distribution of elastic trough for the group.
Resource reservation request message is sent to current Femtocell in step S404, Macrocell, the request message includes the size about FRZ and the information of distribution.According to embodiments of the present invention, Macrocell can lead to Cross IP back haul links and send resource reservation request message to Femtocell.
In step S406, current Femtocdl receives resource reservation request message, according to the request message, adjusts its FRZ, and send resource reservation response message to Macrocell.According to embodiments of the present invention, current Femtocell can by IP back haul links to Macrocell send resource reservation response message.
In step S408, Macrocell receives resource reservation response message, and will in subsequent scheduling of resource
FRZ resource block schedulings are to UE102, so that UE102 can use FRZ resource blocks to carry out data transmission.
According to embodiments of the present invention, because FRZ is semi-static, FRZ resource blocks can be only scheduled to UE102 during subsequent frame.The UE101 that Femtocell is serviced to it only distributes non-FRZ resource blocks, and is not take up FRZ resource blocks.Macrocell also only distributes other resource blocks to its other UE serviced simultaneously.So, UE102' is during FRZ, according to scheduling of resource result, carries out data and sends and receives, and is disturbed so as to avoid and occur thousand with Femtocell.
The foregoing describe resource scheduling system according to embodiments of the present invention and its resource regulating method of execution.Using the method and system of the present invention, can effectively it solve the problem of the Femtocell-Macrocell occurred during Femtocell is disposed is interfered.By coordination limited between Femtocell-Macro, FRZ can be dynamically reserved.During FRZ, unauthorized UE send and receive operation will not cause the interference to Femtocell, will not also be disturbed by Femtocell.So, even if UE haves no right to access Femtocell, it can also avoid interfering with Femtocell, so as to enhance systematic function, it is ensured that service quality. ―
In the above description, for each step, multiple embodiments are listed, although inventor indicates example associated with each other as much as possible, but this does not imply that these examples necessarily have corresponding relation according to corresponding label.As long as contradiction is not present between the selected given condition of example, the not corresponding example of label can be selected to constitute corresponding technical scheme, such technical scheme also should be regarded as being comprised in the scope of the present invention in different steps.
Those skilled in the art be should be readily recognized that, the different step of the above method can be realized by programmed computer.Here, some embodiments equally include machine readable or computer-readable program storage device（Such as, digital data storage medium）And the programmed instruction that encoding machine is executable or computer is executable, wherein, the instruction performs some or all steps of the above method.For example, program storage device can be digital storage, magnetic storage medium（Such as Disk and tape）, hardware or readable digital data storage medium of light.Embodiment equally includes the programmed computer for performing the step of the above method.
It should be noted that in the above description, only in an illustrative manner, showing the technology of the present invention Scheme, but it is not intended that the invention be limited to above-mentioned steps and cellular construction.In a likely scenario, step and cellular construction can be adjusted and accepted or rejected as needed.Therefore, some steps and unit not implement element necessary to the overall invention thought of the present invention.Therefore, technical characteristic essential to the invention, which is limited solely by, can realize the minimum requirements of the overall invention thought of the present invention, without being limited by above instantiation.
So far combined preferred embodiment invention has been described.It should be understood that those skilled in the art are without departing from the spirit and scope of the present invention, various other changes can be carried out, replaces and adds.Therefore, the scope of the present invention is not limited to above-mentioned specific embodiment, and should be defined by the appended claims.

Claims (1)

  1. Claims
    A kind of resource regulating methods of 1, for carrying out scheduling of resource in the Macrocell for being embedded with one or more Femtocell, methods described includes：
    The user equipment (UE) that Macrocell is serviced sends interference indication message to Macrocell, and the interference indication message is indicated between one of UE and one or more of Femtocell and disturbed in the presence of thousand；
    Macrocell receives interference indication message, and according to interference indication message, it is determined that there is size and the distribution of the current Femtocell of interference elastic trough between UE, the Femtocell that elastic trough represents to be embedded in Macrocell keeps for the resource by the Macrocell UE serviced into the Femtocell area of coverage；
    Macrocell sends resource reservation request message to current Femtocell, and the request message includes the size about elastic trough and the information of distribution；
    Current Femtocell receives resource reservation request message, according to the request message, the elastic trough of adjustment, and sends resource reservation response message to Macrocell；And
    Macrocell receive resource reservation response message, and in subsequent scheduling of resource by the scheduling of resource of elastic trough to UE so that UE can use the resource of elastic trough to carry out data transmission.
    2. according to the method described in claim 1, wherein, the UE that Macrocell is serviced is when entering the current Femtocell area of coverage, there is interference between current Femtocell if detected, and judge that current Femtocell can not be switched to, then send interference indication message.
    3. method according to claim 2, wherein, one or more of Femtocell are the Femtocell of Closed User Group's CSG types,
    The permission CSG list preserved on the more current Femtocell of UE that Macrocell is serviced CSG ID and UE, if current Femtocell CSG ID are not in CSG list is allowed, judgement can not be switched to current Femtocell.
    4. method according to claim 3, wherein, the UE that Macrocell is serviced obtains current Femtocell CSG ID by receiving CSD ID from current Femtocell, encapsulating current Femtocell system broadcast information.
    5. according to the method described in claim 1, wherein, Macrocell is according to one or more of following factor, come the size of the elastic trough that determines current Femtocell：
    Current radio environment； In the current Femtocell area of coverage but by the Macrocell UE serviced number；These by the Macrocell UE serviced average data portfolio；
    Current Femtocell previous elastic trough size.
    6. according to the method described in claim 1, wherein, elastic trough is made up of resource block.
    7. the method according to claim 1, wherein, if be embedded with Macrocell multiple
    Femtocell, then be grouped to the plurality of Femtocell in advance, and same group of Femtocell shares the elastic trough of identical,
    Before Macrocell determines size and the distribution of elastic trough, Macrocell determines which group current Femtocell belongs to, to determine size and the distribution of elastic trough for the group.
    Methods of 8, according to claim 1, wherein, if be embedded with Macrocell multiple
    Femtocell, then before Macrocell determines size and the distribution of elastic trough, be grouped to the plurality of Femtocell, and determines which group current Femtocell belongs to, to determine size and the distribution of elastic trough for the group,
    Wherein, same group of Femtocell shares the elastic trough of identical.
    9. the method according to claim 7 or 8, wherein, multiple Femtocell are grouped based on geographical position.
    10. the method according to claim 1, in addition to：In subsequent scheduling of resource, the scheduling of resource of non-resilient trough is only given the current Femtocell UE serviced by current Femtocell.
    11, according to the method described in claim 1, wherein, the size of elastic trough and distribution are semi-static.
    12. method according to claim 11, wherein, Femtocell elastic trough keeps constant after being adjusted, within a predetermined period of time, but is periodically updated.
    13. according to the method described in claim 1, wherein, Macrocell and current Femtocell carry out message communicating via IP back haul links.
    14. a kind of resource scheduling system, including：
    Macrocell ,
    One or more of Macrocell Femtocell are embedded in, and
    The UE that Macrocell is serviced,
    Wherein, the user equipment (UE) that Macrocell is serviced is configured as：Interference indication message is sent to Macrocell, the interference indication message is indicated to be existed between one of UE and one or more of Femtocell Interference；
    Macrocell is configured as：Receive the interference indication message from UE, and according to interference indication message, it is determined that there is size and the distribution of the current Femtocell of interference elastic trough between UE, the Femtocell that elastic trough represents to be embedded in Macrocell keeps for the resource for the UE that Macrocell serviced；Resource reservation request message is sent to current Femtocell, the request message includes the size about elastic trough and the information of distribution；And, receive the resource reservation response message from current Femtocell, and in subsequent scheduling of resource by the scheduling of resource of elastic trough to UE so that UE can use the resource of elastic trough to carry out data transmission；
    One or more FemtocellFemtocell are configured as：The resource reservation request message from Macroell is received, according to the request message, the elastic trough of adjustment, and send resource reservation response message to Macrocell.
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