CN103857049B

CN103857049B - A kind of methods, devices and systems of user equipment for schedule downlink

Info

Publication number: CN103857049B
Application number: CN201210518248.8A
Authority: CN
Inventors: 刘畅; 李天�; 李天一; 吕平宝; 林凌峰; 蒋智宁
Original assignee: Nokia Shanghai Bell Co Ltd
Current assignee: Nokia Shanghai Bell Co Ltd
Priority date: 2012-12-05
Filing date: 2012-12-05
Publication date: 2018-03-06
Anticipated expiration: 2032-12-05
Also published as: CN103857049A

Abstract

The invention provides the methods, devices and systems of the user equipment for schedule downlink.The present invention can be according to the resource load information of the first community and the channel condition information of the variable frequency range of the second community, the part physical resource block in the variable frequency range is selected to add reservation frequency band, and after selected Physical Resource Block is added in the reservation frequency band, the resource load information of second community is provided, and the reservation frequency band of second community is determined according to the resource load information of second community, to dispatch the user equipment of downlink in first community.The present invention can give the cell more schedulable band resources by the reservation frequency band for the neighbor cell for expanding a cell.

Description

A kind of methods, devices and systems of user equipment for schedule downlink

Technical field

The present invention relates to communication technical field, more particularly to a kind of method of user equipment for schedule downlink, Device and system.

Background technology

In 3GPP LTE system, channeling is often used in the raising availability of frequency spectrum.However, channeling can be made (ICI, inter cell interference) is disturbed into section, so as to greatly influence the side of user equipment, particularly cell Edge user equipment, communication quality.

In the prior art, section interference coordination (ICIC, inter cell interference mainly are used Coordinator) disturbed to reduce section, and improve user equipment, especially the communication quality of edge customer equipment.

However, existing ICIC technologies do not account for user distribution and the unbalanced and variable situation of cell load, this It has impact on systematic function.For example, the service quality (QoS, Quality of Service) of user equipment in a cell is no In the case of ensureing, QoS of the user equipment etc. can not be improved by dynamic adjustment frequency band division.

The content of the invention

It is an object of the invention to provide a kind of methods, devices and systems of the user equipment for schedule downlink.

According to an aspect of the present invention, there is provided a kind of side for being used to dispatch the user equipment of downlink in first community Method, wherein, this method comprises the following steps：

A obtains the resource load information of the first community and is supplied to the second community adjacent with the first community；

B receives the reservation frequency band from the second community, described second community and is based on the resource load information more The resource load information of the second community after new, wherein, the reservation frequency band of the second community is not used for small for described second User equipment in area provides downstream service；

C determines the reservation frequency band of the second community according to the resource load information of the second community；

D the reservation frequency band of the second community and reservation frequency of the fixed first community determined by Band, dispatch the user equipment of downlink in the first community.

According to another aspect of the present invention, it is descending in first community for aiding in second community to additionally provide one kind The method of the scheduling of the user equipment of link, wherein, the first community is adjacent with the second community, and this method includes following Step：

A receives the resource load information from the first community；

B believes according to the channel status of the resource load information of the first community and the variable frequency range of the second community Breath, the part physical resource block in the variable frequency range is selected, and selected Physical Resource Block is added into the reservation frequency band In, wherein, the reservation frequency band of the second community not be used to provide downstream service for the user in the second community；

C after selected Physical Resource Block is added in the reservation frequency band, bear by the resource for obtaining the second community Information carrying ceases, and is supplied to the first community.

According to another aspect of the present invention, a kind of user for being used to dispatch downlink in first community is additionally provided to set Standby first device, wherein, the first device includes：

First acquisition device, for obtaining the resource load information of the first community and being supplied to and the first community phase Adjacent second community；

First receiving device, institute is based on for receiving the reservation frequency band from the second community, described second community State the resource load information of the second community after resource load information renewal, wherein, the reservation frequency band of the second community not by For providing downstream service for the user equipment in the second community；

First determining device, for the resource load information according to the second community, determine the guarantor of the second community Stay frequency band；

Dispatching device, for the reservation frequency band of the second community determined by and fixed described first small The reservation frequency band in area, dispatch the user equipment of downlink in the first community.

According to another aspect of the present invention, it is descending in first community for aiding in second community to additionally provide one kind The second device of the scheduling of the user equipment of link, wherein, the first community is adjacent with the second community, the second device Including：

Second reception device, for receiving the resource load information from the first community；

Frequency band adjusting apparatus, for the variable of the resource load information according to the first community and the second community The channel condition information of frequency band, selects the part physical resource block in the variable frequency range, and by selected Physical Resource Block Add in the reservation frequency band, wherein, the reservation frequency band of the second community is not used for for the user in the second community Downstream service is provided；

3rd acquisition device, for after selected Physical Resource Block is added in the reservation frequency band, described in acquisition The resource load information of second community, and it is supplied to the first community.

Compared with prior art, the present invention has advantages below：1) neighbor cell of one cell of expansion can be passed through Retain frequency band, give the cell more schedulable band resources, it is achieved thereby that minizone retains the dynamic adjustment of frequency band, energy Enough greatly improve user throughput and improve systematic function；2) when selection needs to add the PRB in reservation frequency band, it with reference to this The channel status of cell and the resource load information of neighbor cell, it is logical so as to select to provide in this cell Believe quality (such as SINR is relatively low) and by neighbor cell using the higher PRB of probability, addition retains in frequency band, more preferable for neighbor cell Ground uses；3) when the communication load of this cell is higher and/or relative neighbor cell is higher, it can will add and retain in frequency band PRB be restored in this cell, used for this cell in scheduling user's set；4) can be born in the neighbor cell of a cell When lotus is higher, triggers this cell and perform the operation for expanding and retaining frequency band, so that neighbor cell can be preferably small using this Reservation frequency band after area's expansion, to still ensure that certain service quality in the case where neighboring cell load is higher.

Brief description of the drawings

By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other Feature, objects and advantages will become more apparent upon：

Fig. 1 is the method flow diagram of the user equipment for schedule downlink of a preferred embodiment of the invention；

Fig. 2 is the division schematic diagram of the reservation frequency band of the neighbor cell of a preferred embodiment of the invention；

Fig. 3 is the method flow diagram of the user equipment for schedule downlink of another preferred embodiment of the present invention；

Fig. 4 is the system architecture signal of the user equipment for schedule downlink of a preferred embodiment of the invention Figure；

Fig. 5 is the system architecture signal of the user equipment for schedule downlink of another preferred embodiment of the present invention Figure.

Same or analogous reference represents same or analogous part in accompanying drawing.

Embodiment

The present invention is described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is the method flow diagram of the user equipment for schedule downlink of a preferred embodiment of the invention.This Method in embodiment is mainly performed by first device 1 and second device 2.Wherein, first device 1 serves first community, Second device 2 serves second community；Preferably, the first device 1 is contained in the base station belonging to the first community, institute Second device 2 is stated to be contained in the base station belonging to second community.Wherein, first community and second community are adjacent, and first community It can belong to same base station with second community, may belong to different base station.

S11, step S21, step S22, step S23, step S12, step are comprised the steps according to the method for the present embodiment Rapid S13 and step S14.

In step s 11, first device 1 obtains the resource load information of first community and is supplied to and the first community phase Adjacent second community.

Wherein, the resource load information (load information) of one cell can be used to indicate that the cell The use information of each Physical Resource Block (PRB, physical resource block)；For example, define this in TS36.423 Resource load information and its information element (IE, Information Element), wherein, the information element of resource load information It may include RNTP specified in TS36.213 (Relative Narrowband Tx Power), the RNTP may indicate that a cell Downlink in each PRB use information.

Preferably, resource load information is also sent to other cells adjacent with first community by first device 1, that is, All neighbor cells from first device 1 to first community send first community resource load information so that serve this first All devices of each neighbor cell of cell can receive the resource load information of the first community.

In the step s 21, the second device 2 for serving second community receives the resource load information from first community.

Preferably, the device that other cells are served in system performs the operation similar with step S 11, to neighbor cell Send the resource load information of this cell；Then in the step s 21, second device 2 is received from first community and other and its The resource load information of adjacent cell, that is, second device 2 receives each neighbor cell that its all neighbor cell is sent Resource load information.

It should be noted that first device 1 can be continually performed step S11, such as periodically obtained with Fixed Time Interval Take resource load information and send, so that resource load information can constantly be received by serving the second device 2 of second community.

It should be noted that if first community and second community belong to same base station, first device 1 and second device 2 Can be by the interlayer primitive (primitive) of base station come mutual resource load information；If first community and second community belong to not Same base station, can first device 1 and second device 2 can be by X2 interface come mutual resource load information.Preferably, first device 1 Operation with second device 2 mainly for the treatment of agreement middle level 1 and layer 2, then to enable resource load information belonging to different The minizone of base station is transmitted, and resource load information can be sent to the layer 3 of first community own base station by first device 1, and by layer 3 The layer 3 of second community own base station is passed to by X2 interface, is then passed to and served by the layer 3 of second community own base station The second device 2 of second community.

Then, in step S22, second device 2 can according to the resource load information of first community and second community Become the channel condition information of frequency band, select the part physical resource block in the variable frequency range, and by selected physical resource Block is added in the reservation frequency band (restricted PRB zone), wherein, the reservation frequency band of the second community is not used for Downstream service is provided for the user in the second community.It should be noted that under reservation frequency band signified in the present invention represents The reservation frequency band of line link, the reservation frequency band of itself and up-link can be independent mutually, that is, to the guarantor of downlink in the present invention Stay the adjustment of frequency band can not influence the reservation frequency band of up-link.

Wherein, second device 2 can be according only to the resource load information and second community of the first community once received The channel condition information of variable frequency range select the Physical Resource Block in variable frequency range, also can repeatedly receive and to obtain first small After multiple resource load informations in area, individual the plurality of resource load information is filtered, and according to filtered resource load The channel condition information of the variable frequency range of information and second community selects the Physical Resource Block in variable frequency range.

Specifically, the channel status of each PRB in variable frequency range can determine by channel condition information, second device 2, Wherein, the possibility that the poorer PRB of channel status is chosen to add in reservation frequency band is higher；Pass through the resource from neighbor cell Load information, second device 2 can determine the use information of PRB in neighbor cell, wherein, it is more by use in neighbor cell PRB be chosen add retain frequency band possibility it is higher.

For example, second device 2 is subordinated in the PRB of variable frequency range according to channel condition information and resource load information Selection SINR is less than a predetermined snr threshold, and the PRB utilization rates of neighbor cell are more than predetermined utilization rate threshold value PRB, it is medium to add reservation frequency band.

In another example second device 2 according to channel condition information and resource load information, is evaluated each PRB, and The PRB in variable frequency range is selected to add reservation frequency band according to the ranking results of evaluation of estimate medium.

Preferably, resource load information, other cells adjacent with second community that second device 2 can be according to first community Resource load information and second community variable frequency range channel condition information, select the part thing in the variable frequency range Resource block is managed, and selected Physical Resource Block is added in the reservation frequency band.That is, second device 2 according to it is second small The channel condition information of the resource load information of the adjacent all cells in area and the variable frequency range of second community, selection second are small Part physical resource block in the variable frequency range in area, and selected Physical Resource Block is added in the reservation frequency band；And class As, if PRB channel status is poorer in second community, and its probability used by neighbor cell is higher, then the PRB quilts The possibility retained in frequency band that selection adds second community is higher.

If it disclosure satisfy that and can add it should be noted that can not be obtained according to channel condition information and resource load information Retaining the PRB of the condition in frequency band, then second device 2 can not select to need to add the PRB retained in frequency band, in the case, The reservation frequency band of second community is constant.For example, if the SINR for belonging to the PRB of variable frequency range is above a predetermined signal to noise ratio threshold Value, and utilization rates of each PRB in neighbor cell is below predetermined utilization rate threshold value etc., then second device 2 does not perform Selection PRB simultaneously adds the operation for retaining frequency band.

It should be further stated that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to this hair Bright limitation, it should be appreciated by those skilled in the art that any resource load information and second community according to first community The channel condition information of variable frequency range, the part physical resource block in the variable frequency range is selected, and selected physics is provided Source block adds the implementation retained in frequency band, should be included in the scope of the present invention.

Then, in step S23, after selected Physical Resource Block is added in reservation frequency band, second device 2 obtains The resource load information of second community, and it is supplied to the first community.

Preferably, second device 2 obtains the resource load information of second community, and is supplied to including first community All cells adjacent thereto.

In step s 12, the first device 1 for serving first community receives from second community, described second community Retain frequency band based on the resource load information update after the second community resource load information.

Preferably, first device 1 also receives other neighbor cells of first community in the resource load based on first community Information updating retains the resource load information of each neighbor cell provided after frequency band.

It should be noted that second device 2 can be continually performed step S23, such as periodically obtained with Fixed Time Interval The resource load information of second community and transmission are taken, so that the first device 1 for serving first community can constantly receive The resource load information of two cells.

Then, in step s 13, first device 1 determines the second community according to the resource load information of second community Reservation frequency band.

Preferably, first device 1 is filtered to the multiple resource load informations received in step s 12, obtains one Use informations of each PRB in second community, such as access times, utilization rate in the section time；Then first device 1 can be according to filter Use information after ripple, it is determined that the frequency band belonging to the PRB being not used by all the time within this time, the reservation as second community Frequency band.Preferably due to the original reservation frequency band that first device 1 has generally obtained second community according to being pre-configured with, therefore, In step S13, first device 1 can determine the newly-increased variable ratio frequency changer of second community only in the range of the original variable frequency range of second community Band.

For example, first device 1 obtains five resource load informations after performing step S12 at 5 times, wherein, each resource is born Information carrying breath can indicate that each PRB of second community is used or is not used by；Then first device 1 is to five resource loads Information is filtered, and it by access times is the frequency band belonging to zero PRB to select after filtering, the reservation frequency as second community Band.

Preferably, in step s 12, first device 1 also receives the resources of other neighbor cells in addition to second community and born Information carrying cease, then in step s 13, first device 1 can the resource load information based on each neighbor cell, determine each phase respectively The reservation frequency band of adjacent cell.

For example, cell A, cell B and cell C neighbor cell each other, multiplexer mode (reuse pattern) is 3, such as Fig. 2 It is shown, whole frequency band can be divided into according to original frequency multiplexing factor (frequency reuse factor) variable frequency range and Fixed frequency band, wherein, the multiplexing factor of fixed frequency band is more than 1 and the partial-band can not enter Mobile state adjustment, variable frequency range Multiplexing factor is equal to 1 under the original case for being not carried out the present invention program, and its multiplexing factor may be because performing side of the invention Case and be changed；Also, under the original case for being not carried out the present invention program, cell A, B and C original reservation frequency band wherein, Reservation frequency band non-overlapping copies between neighbor cell.

First community is cell A, and first device 1 determines cell B respectively according to cell B and cell C resource load information Newly-increased reservation frequency band with cell C is as shown in Fig. 2 thus, first device 1 can obtain the money of cell B and cell C based on cell A Reservation frequency band after the load information renewal frequency band division of source.

It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than the limit to the present invention System, it should be appreciated by those skilled in the art that any resource load information according to second community, determine the guarantor of the second community The implementation of frequency band is stayed, should be included in the scope of the present invention.

Then, in step S14, first device 1 is according to the reservation frequency band of identified second community and fixed The reservation frequency band of first community, dispatch the user equipment of downlink in the first community.

Wherein, first device 1 dispatches the user of downlink in first community without using the reservation frequency band of first community Equipment, and for the edge customer equipment of first community, if the most strong neighbor cell of the edge customer equipment is second community, First device 1 preferably dispatches the edge customer equipment on the reservation frequency band of second community.

Preferably, if in step s 13, first device 1 determines the reservation frequency band of each neighbor cell of first community, then In step S14, first device 1 is according to the reservation frequency band for retaining frequency band and its each neighbor cell of first community, scheduling the The user equipment of downlink in one cell.Preferably, it is small to dispatch first not on the reservation frequency band of first community for first device 1 All user equipmenies in area, and for the edge customer equipment of first community, first device 1 is preferably in edge customer equipment The user equipment is dispatched on the reservation frequency band of most strong neighbor cell, to reduce the interference from neighbor cell.

It should be noted that abovementioned steps S11, step S21, step S22, step S23, step S12, step S13 and step Rapid S14 can be continually performed during first device 1 and second device 2 work, if for example, with hundreds of milliseconds, 1 second or The time interval of dry second periodically carries out so that cell can relatively in real-time adjust itself reservation frequency band or according to Reservation frequency band after the renewal of neighbor cell carrys out the user equipment of schedule downlink.Further, due to performing once scheduling behaviour The time interval of work is often shorter than the time interval that renewal retains frequency band, for example, the time interval for performing a scheduling operation is 1ms, therefore, in step S14, after reservation frequency band is determined, repeatedly scheduling can be performed according to identified reservation frequency band and grasped Make, be updated again until retaining frequency band.

If due to the edge customer equipment that the cell is dispatched on the reservation frequency band of the neighbor cell of a cell, Neng Gou great It is big to reduce the interference from neighbor cell.Therefore, in the present invention, the reservation frequency for the neighbor cell for expanding a cell can be passed through Band, give the cell more schedulable band resources, it is achieved thereby that minizone retains the dynamic adjustment of frequency band, can be significantly Improve user throughput and improve systematic function.In addition, during PRB of the present invention in selection needs addition reservation frequency band, reference The channel status of this cell and the resource load information of neighbor cell, so as to selecting to provide in this cell Communication quality (such as SINR is relatively low) and by neighbor cell using the higher PRB of probability, add and retain in frequency band, for neighbor cell Preferably use.

As one of the preferred embodiments of the present invention, the method for the present embodiment is further comprising the steps of：When meet it is following extremely During one item missing condition, second device 2 will be adjusted to the Physical Resource Block in the reservation frequency band by the variable frequency range and is restored to In the variable frequency range：

1) indicated by the resource status fresh information (resource status update message) of second community The Physical Resource Block utilization rate of GBR traffic meets the 4th predetermined condition.

Wherein, the resource status fresh information may include GBR traffic (guarantee bit rate traffic) PRB utilization rates, The PRB utilization rates of non-GBR business (non-ensured bit rate service) and both total PRB utilization rates, such as 3GPP specifications Defined in TS36.423.

Wherein, the 4th predetermined condition includes but is not limited to：The Physical Resource Block utilization rate of the GBR traffic of second community PRB utilization rates threshold value predetermined higher than first etc..

Because GBR traffic needs to ensure bit rate, therefore, when such GBR traffic amount is higher, to ensure second community Service quality, can will originally add retain frequency band in PRB be restored in variable frequency range.

It should be noted that if first community and second community belong to same base station, first device 1 and second device 2 Can be by the interlayer primitive (primitive) of base station come mutual resource state updating information；If first community and second community category In different base station, can first device 1 and second device 2 can be by X2 interface come mutual resource state updating information.Preferably, One device 1 and second device 2 mainly for the treatment of agreement middle level 1 and layer 2 operation, then to enable resource status fresh information Transmitted in the minizone for belonging to different base station, resource status fresh information can be sent to the affiliated base of first community by first device 1 The layer 3 stood, and the layer 3 of second community own base station is passed to by layer 3 by X2 interface, then by second community own base station Layer 3 passes to the second device 2 for serving second community.

2) phase of the Physical Resource Block utilization rate and the second community indicated by the resource status fresh information of second community The comparison result of Physical Resource Block utilization rate indicated by the resource status fresh information of adjacent cell meets the 5th predetermined condition.

Preferably, second community and its Physical Resource Block utilization rate indicated by the resource status fresh information of neighbor cell For total PRB utilization rates, the 5th predetermined condition includes but is not limited to：PRB utilization rates-second community of second community it is adjacent The second predetermined PRB utilization rates threshold values of PRB utilization rates ＞ of PRB utilization rates highest neighbor cell in cell.

If the PRB utilization rates of second community are higher than or far above its neighbor cells, it is believed that the load of second community is It is higher than or far above its neighbor cell, therefore second community by expanding it without retaining frequency band come the acquisition of its neighbor cell More PRB resources, the PRB for being adjusted to retain frequency band can be restored in variable frequency range.

It is highly preferred that second device 2 can to repeated detection to the resource status fresh information of second community be filtered The PRB utilization rates of second community are obtained afterwards, and second device 2 can update letter to the resource status of the neighbor cell repeatedly received Breath obtains the PRB utilization rates of each neighbor cell of second community after being filtered.

Specifically, when meeting at least one of above condition, second device 2 by by the variable frequency range of second community adjust to Physical Resource Block in the reservation frequency band of second community is restored in the variable frequency range of second community.

For example, referring to Fig. 2, cell B is second community, then when meeting at least one of above condition, second device 2 will Newly-increased reservation frequency band shown in Fig. 2 is reduced to variable frequency range.

It is true under the original case for being not carried out the present invention program no matter how frequency band adjusts as a kind of preferred scheme Fixed original reservation frequency band will not be adjusted to variable frequency range.

It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than the limit to the present invention System, it should be appreciated by those skilled in the art that any when meeting at least one of above condition, will be adjusted by the variable frequency range to Physical Resource Block in the reservation frequency band is restored to the implementation in the variable frequency range, for example, the 5th predetermined condition bag Include：The PRB utilization rates+the second of any neighbor cell are predetermined in the neighbor cell of the PRB utilization rate ＞ second communities of second community PRB utilization rate threshold values etc., should be included in the scope of the present invention.

One of preferred scheme as the present embodiment, the present embodiment is further comprising the steps of：To be adjusted by variable frequency range to After Physical Resource Block in reservation frequency band is restored in the variable frequency range, second device 2 obtains the resource load of second community Information, and it is supplied to the first community.

Wherein, second device 2 obtains the resource load information of second community and is supplied to the mode of first community, with step Second device 2 obtains the resource load information of second community and is supplied to the mode of first community same or similar in S23, herein Repeat no more.

Thus, first device 1 can perform step S13 and step S14 after the resource load information is received.

In the present embodiment, when the communication load of this cell is higher and/or relative neighbor cell is higher, it will can add The PRB retained in frequency band is restored in this cell, is used for this cell in scheduling user's set.

Fig. 3 is the method flow diagram of the user equipment for schedule downlink of another preferred embodiment of the present invention. Step S15, step S16, step S24, step S25, step S11, step S21, step are included according to the method for the present embodiment S22, step S23, step S12, step S13 and step S14.

Wherein, step S11, step S21, step S22, step S23, step S12, step S13 and step S14 in reference It is described in detail, is will not be repeated here in embodiment illustrated in fig. 1.

In step S15, first device 1 obtains the resource status fresh information of first community.

Then, in step s 16, resource status fresh information is supplied to second community by first device 1.

Preferably, it is all adjacent small including resource status fresh information is supplied to comprising second community by first device 1 Area.

In step s 24, second device 2 receives the money from first community and other cells adjacent with second community Source state updating information.

It should be noted that step S15, step S16 and step S24 can be performed a plurality of times, so that second device 2 can obtain Multiple resource status fresh informations simultaneously filter.

Then, in step s 25, when second device 2 judges other phases of first community, second community and first community When the resource status fresh information of adjacent cell meets the first predetermined condition, step S22 and S23 are performed, then first device 1 is correspondingly Perform step S12, step S13 and step S14.

Wherein, first predetermined condition be less than including any PRB resources that can reflect second community using load or The condition that should meet far below the resource status fresh information of all or part of cell in its neighbor cell.Preferably, One predetermined condition includes but is not limited to：

1) the Physical Resource Block utilization rate indicated by the resource status fresh information of second community and second community is adjacent The comparison result of Physical Resource Block utilization rate indicated by the resource status fresh information of cell meets the second predetermined condition.

Preferably, second community and its Physical Resource Block utilization rate indicated by the resource status fresh information of neighbor cell For total PRB utilization rates, second predetermined condition includes but is not limited to：The PRB utilization rate ＜ second communities of second community it is adjacent The-the three predetermined PRB utilization rates threshold value of PRB utilization rates of PRB utilization rates highest neighbor cell in cell.

If the PRB utilization rates of second community are less than or far below its neighbor cells, it is believed that the load of second community is low In or far below its neighbor cell, therefore the part PRB resources of second community can be disabled, so that its neighbor cell can preferably make The PRB resources disabled with second community are to improve the service quality of neighbor cell.

2) Physical Resource Block of the GBR traffic indicated by the resource status fresh information of the neighbor cell of second community uses Rate meets the 3rd predetermined condition.

Wherein, the 3rd predetermined condition includes but is not limited to：The maximum thing of the GBR traffic of the neighbor cell of second community Resource block utilization rate is managed higher than the 4th predetermined PRB utilization rates threshold value etc..

If it is higher than due to the PRB utilization rates of the GBR traffic of one or more cells in the neighbor cell of second community be present To a certain degree, then the cell that existing GBR traffic load is larger in the neighbor cell of second community is believed that, therefore second can be disabled The part PRB resources of cell, so that the PRB resources that its neighbor cell preferably can be disabled using second community, so that It can ensure certain service quality in the case that neighbor cell GBR traffic load is larger.

Preferably, when second device 2 judges the money of other neighbor cells of first community, second community and first community When source state updating information is unsatisfactory for the first predetermined condition, do not perform operation, or, directly obtain second community resource load Information, and it is supplied to first community.

It should be noted that had no between step S15, step S16, step S24 and step S11, step S21 successively suitable Sequence.

In the present embodiment, it can trigger this cell when the neighboring cell load of a cell is higher and perform expansion reservation The operation of frequency band, so that neighbor cell can preferably use the reservation frequency band after this cell enlargement, with neighbor cell Certain service quality is still ensured that in the case that load is higher.

Fig. 4 is the system architecture signal of the user equipment for schedule downlink of a preferred embodiment of the invention Figure.The system of the present embodiment includes serving the first device 1 of first community and serves the second device 2 of second community； Wherein, first device 1 includes the first acquisition device 11, first receiving device 12, the first determining device 13 and dispatching device 14； Second device 2 includes the second reception device 21, the acquisition device 23 of frequency band adjusting apparatus 22 and the 3rd.

The first acquisition device 11 in first device 1 obtain the resource load information of first community and be supplied to this first The adjacent second community of cell.

Preferably, resource load information is also sent to other cells adjacent with first community by the first acquisition device 11, That is, the first acquisition device 11 sends the resource load information of first community to all neighbor cells of first community, so that clothes All devices in each neighbor cell of the first community of being engaged in can receive the resource load information of the first community.

The second reception device 21 served in the second device 2 of second community receives the resource load from first community Information.

Preferably, device execution and the 11 performed operation of the first acquisition device that other cells are served in system are similar Operation, the resource load information of this cell is sent to neighbor cell；Then received in the second reception device 21 and come from first community And the resource load information of other cells adjacent thereto, that is, the second reception device 21 receives its all neighbor cell hair The resource load information for each neighbor cell sent.

It should be noted that the first acquisition device 11 can be continually performed operation, such as with Fixed Time Interval periodically Obtain resource load information simultaneously to send, so that the second reception device 21 in serving the second device 2 of second community can not Resource load information is received disconnectedly.

It should be noted that if first community and second community belong to same base station, the first acquisition device 11 and second Reception device 21 connects can be by the interlayer primitive (primitive) of base station come mutual resource load information；If first community and Two cells belong to different base station, can the first acquisition device 11 and the second reception device 21 can be loaded by X2 interface come mutual resource Information.Preferably, first device 1 and second device 2 mainly for the treatment of agreement middle level 1 and layer 2 operation, then to bear resource Information carrying breath can be transmitted in the minizone for belonging to different base station, and resource load information can be sent to first by the first acquisition device 11 The layer 3 of cell own base station, and the layer 3 of second community own base station is passed to by layer 3 by X2 interface, then by second community The layer 3 of own base station passes to the second reception device 21 in the second device 2 for serving second community.

Then, frequency band adjusting apparatus 22 is according to the variable frequency range of the resource load information of first community and second community Channel condition information, the part physical resource block in the variable frequency range is selected, and selected Physical Resource Block is added into institute State and retain in frequency band (restricted PRB zone), wherein, the reservation frequency band of the second community is not used for for described the User in two cells provides downstream service.It should be noted that the frequency band that retains signified in the present invention represents downlink Retaining frequency band, the reservation frequency band of itself and up-link can be independent mutually, that is, the reservation frequency band in the present invention to downlink Adjustment can not influence the reservation frequency band of up-link.

Wherein, frequency band adjusting apparatus 22 can be according only to the resource load information of the first community once received and second The channel condition information of the variable frequency range of cell selects the Physical Resource Block in variable frequency range, also can repeatedly receive and obtain After multiple resource load informations of one cell, individual the plurality of resource load information is filtered, and according to filtered resource The channel condition information of load information and the variable frequency range of second community selects the Physical Resource Block in variable frequency range.

Specifically, the channel of each PRB in variable frequency range can determine by channel condition information, frequency band adjusting apparatus 22 State, wherein, the possibility that the poorer PRB of channel status is chosen to add in reservation frequency band is higher；By from neighbor cell Resource load information, second device 2 can determine the use information of PRB in neighbor cell, wherein, made in neighbor cell The possibility for being chosen to add reservation frequency band with more PRB is higher.

For example, frequency band adjusting apparatus 22 is subordinated to variable frequency range according to channel condition information and resource load information SINR is selected to be less than a predetermined snr threshold, and more than one predetermined utilization rate threshold of the PRB utilization rates of neighbor cell in PRB The PRB of value, it is medium to add reservation frequency band.

In another example frequency band adjusting apparatus 22 is commented each PRB according to channel condition information and resource load information Valency, and it is medium to select the PRB in variable frequency range to add reservation frequency band according to the ranking results of evaluation of estimate.

Preferably, frequency band adjusting apparatus 22 can according to the resource load information of first community, it is adjacent with second community its The channel condition information of the resource load information of his cell and the variable frequency range of second community, select in the variable frequency range Part physical resource block, and selected Physical Resource Block is added in the reservation frequency band.That is, frequency band adjusting apparatus 22 According to all cells adjacent with second community resource load information and second community variable frequency range channel condition information, The part physical resource block in the variable frequency range of second community is selected, and selected Physical Resource Block is added into described retain frequently In band；And similarly, if PRB channel status is poorer in second community, and its probability used by neighbor cell is higher, The possibility that then PRB is chosen to add in the reservation frequency band of second community is higher.

If it disclosure satisfy that and can add it should be noted that can not be obtained according to channel condition information and resource load information Retain the PRB of the condition in frequency band, then frequency band adjusting apparatus 22 can not select to need to add the PRB retained in frequency band, in this feelings Under condition, the reservation frequency band of second community is constant.For example, if the SINR for belonging to the PRB of variable frequency range is above a predetermined noise Than threshold value, and utilization rates of each PRB in neighbor cell is below predetermined utilization rate threshold value etc., then frequency band adjusting apparatus 22 do not perform selection PRB and add the operation for retaining frequency band.

Then, after selected Physical Resource Block is added in reservation frequency band, it is small that the 3rd acquisition device 23 obtains second The resource load information in area, and it is supplied to the first community.

Preferably, the 3rd acquisition device 23 obtains the resource load information of second community, and is supplied to including first community All cells adjacent thereto inside.

The first receiving device 12 served in the first device 1 of first community receives from second community, described The resource load information for retaining the second community after frequency band is updated based on the resource load information of two cells.

Preferably, first receiving device 12 also receives other neighbor cells of first community in the resource based on first community Load information renewal retains the resource load information of each neighbor cell provided after frequency band.

It should be noted that the 3rd acquisition device 23 can be continually performed operation, such as with Fixed Time Interval periodically The resource load information of second community and transmission are obtained, so that first in serving the first device 1 of first community receives dress The resource load information of second community can constantly be received by putting 12.

Then, the first determining device 13 determines the reservation of the second community according to the resource load information of second community Frequency band.

Preferably, the first determining device 13 is filtered to the multiple resource load informations received in first receiving device 12 Ripple, obtain use informations of each PRB in second community, such as access times, utilization rate in a period of time；Then first determine Device 13 can according to filtered use information, it is determined that the frequency band belonging to the PRB being not used by all the time within this time, as The reservation frequency band of second community.Preferably, the original reservation frequency band of usual second community is according to determination is pre-configured with, therefore, First determining device 13 can determine the newly-increased variable frequency range of second community only in the range of the original variable frequency range of second community.

For example, 12 5 execution of first receiving device operate and receive five resource load informations, wherein, each resource is born Information carrying breath can indicate that each PRB of second community is used or is not used by；Then the first determining device 13 provides to this five Source load information is filtered, and it is the frequency band belonging to zero PRB to select after filtering by access times, the guarantor as second community Stay frequency band.

Preferably, first receiving device 12 also receives the resource load information of other neighbor cells in addition to second community, Then the first determining device 13 can the resource load information based on each neighbor cell, determine respectively each neighbor cell reservation frequency Band.

First community is cell A, and first device 1 determines cell B respectively according to cell B and cell C resource load information Newly-increased reservation frequency band with cell C is as shown in Fig. 2 thus, the first determining device 13 can obtain cell B and cell C and be based on cell A Resource load information renewal frequency band division after reservation frequency band.

Then, dispatching device 14 is according to the reservation frequency band of identified second community and the guarantor of fixed first community Frequency band is stayed, dispatches the user equipment of downlink in the first community.

Wherein, dispatching device 14 dispatches the user of downlink in first community without using the reservation frequency band of first community Equipment, and for the edge customer equipment of first community, if the most strong neighbor cell of the edge customer equipment is second community, Dispatching device 14 preferably dispatches the edge customer equipment on the reservation frequency band of second community.

Preferably, if the first determining device 13 determines the reservation frequency band of each neighbor cell of first community, scheduling dress Put 14 and frequency band and its reservation frequency band of each neighbor cell are retained according to first community, dispatch downlink in first community User equipment.Preferably, dispatching device 14 does not dispatch all user equipmenies of first community on the reservation frequency band of first community, And for the edge customer equipment of first community, dispatching device 14 is preferably in the guarantor of the most strong neighbor cell of edge customer equipment Stay and the user equipment is dispatched on frequency band, to reduce the interference from neighbor cell.

It should be noted that foregoing first acquisition device 11, first receiving device 12, the first determining device 13, scheduling dress Put the 14, second reception device 21, the acquisition device 23 of frequency band adjusting apparatus 22 and the 3rd is can be filled in first device 1 and second It is continually performed during putting 2 work, for example, periodically carried out with hundreds of milliseconds, 1 second or some seconds of time interval, from And enable cell relatively in real-time adjust the reservation frequency band of itself or updated according to neighbor cell after reservation frequency band adjust Spend the user equipment of downlink.Further, often it is shorter than renewal reservation due to performing the time interval of a scheduling operation The time interval of frequency band, for example, the time interval for performing a scheduling operation is 1ms, therefore, after reservation frequency band is determined, Dispatching device 14 can perform multiple scheduling operation according to identified reservation frequency band, be updated again until retaining frequency band.

If due to the edge customer equipment that the cell is dispatched on the reservation frequency band of the neighbor cell of a cell, Neng Gou great It is big to reduce the interference from neighbor cell.Therefore, in the present invention, the reservation frequency for the neighbor cell for expanding a cell can be passed through Band, it can give the cell more schedulable band resources, it is achieved thereby that minizone retains the dynamic adjustment of frequency band, can Greatly improve user throughput and improve systematic function.In addition, during PRB of the present invention in selection needs addition reservation frequency band, The channel status of this cell and the resource load information of neighbor cell are with reference to, so as to select to carry in this cell For more preferable communication quality (such as SINR is relatively low) and by neighbor cell using the higher PRB of probability, add and retain in frequency band, for phase Adjacent cell preferably uses.

As one of the preferred embodiments of the present invention, the second device 2 of the present embodiment also includes reduction apparatus (not shown), When meeting at least one of following condition, reduction apparatus will be adjusted to the physics in the reservation frequency band by the variable frequency range and provided Source block is restored in the variable frequency range：

It is highly preferred that reduction apparatus can to repeated detection to second community resource status fresh information be filtered after The PRB utilization rates of second community are obtained, and reduction apparatus can be to the resource status fresh information of the neighbor cell repeatedly received The PRB utilization rates of each neighbor cell of second community are obtained after being filtered.

Specifically, when meeting at least one of above condition, reduction apparatus by by the variable frequency range of second community adjust to Physical Resource Block in the reservation frequency band of second community is restored in the variable frequency range of second community.

For example, referring to Fig. 2, cell B is second community, then when meeting at least one of above condition, reduction apparatus will Newly-increased reservation frequency band shown in Fig. 2 is reduced to variable frequency range.

One of preferred scheme as the present embodiment, the second device 2 of the present embodiment also include the second offer device and (schemed not Show), it will be adjusted by variable frequency range to the Physical Resource Block retained in frequency band after being restored in the variable frequency range, second provides dress The resource load information for obtaining second community is put, and is supplied to the first community.

Wherein, the secondth offer device obtains the resource load information of second community and is supplied to the mode of first community, The resource load information of second community is obtained with the 3rd acquisition device 23 and is supplied to the mode of first community same or similar, This is repeated no more.

Thus, after first device 1 receives the resource load information, the first determining device 13 and dispatching device 14 can Perform operation.

Fig. 5 is the system architecture signal of the user equipment for schedule downlink of another preferred embodiment of the present invention Figure figure.The system of the present embodiment includes serving the first device 1 of first community and serves the second device of second community 2；Wherein, first device 1 includes the second acquisition device 15, first offer device 16, the first acquisition device 11, first receiving device 12nd, the first determining device 13 and dispatching device 14；Second device 2 connects including the 3rd reception device 24, judgment means 25, second Receiving apparatus 21, the acquisition device 23 of frequency band adjusting apparatus 22 and the 3rd.

Wherein, the first acquisition device 11, first receiving device 12, the first determining device 13, dispatching device 14, second receive Device 21, the acquisition device 23 of frequency band adjusting apparatus 22 and the 3rd are described in detail with reference to the embodiment shown in FIG. 3, herein not Repeat again.

The second acquisition device 15 in first device 1 obtains the resource status fresh information of first community.

Then, resource status fresh information is supplied to second community by the first offer device 16.

Preferably, all phases including resource status fresh information is supplied to comprising second community by the first offer device 16 Adjacent cell.

The 3rd reception device 24 in second device 2 receives from first community and adjacent with second community other are small The resource status fresh information in area.

It should be noted that the second acquisition device 15 can be performed a plurality of times with the first offer device 16 with the 3rd reception device 24 Operation, so that judgment means 25 can obtain multiple resource status fresh informations and filter.

Then, when the second device 2 of judgment means 25 judge first community, second community and first community other are adjacent When the resource status fresh information of cell meets the first predetermined condition, it triggers frequency band adjusting apparatus 22 and the 3rd acquisition device 23 perform operation, then the first receiving device 12 in first device 1, the first determining device 13 and dispatching device 14 can be correspondingly Perform operation.

It is highly preferred that judgment means 25 can to repeated detection to the resource status fresh information of second community be filtered The PRB utilization rates of second community are obtained afterwards, and judgment means 25 can update to the resource status of the neighbor cell repeatedly received Information obtains the PRB utilization rates of each neighbor cell of second community after being filtered.

If due to the PRB utilization rates of one or more cell GBR traffics in the neighbor cell of second community be present higher than one Determine degree, be then believed that the cell that existing GBR traffic load is larger in the neighbor cell of second community, therefore it is small to disable second The part PRB resources in area, so that the PRB resources that its neighbor cell preferably can be disabled using second community, so as in phase Certain service quality can be ensured in the case that adjacent cell GBR traffic load is larger.

Preferably, when judgment means 25 judge other neighbor cells of first community, second community and first community When resource status fresh information is unsatisfactory for the first predetermined condition, operation is not performed, or, the resource for directly obtaining second community is born Information carrying ceases, and is supplied to first community.

It should be noted that the second acquisition device 15, first provides device 16, the 3rd reception device 24 and first obtains dress Put the 11, second reception device 21 execution operation between have no sequencing.

It should be noted that foregoing first community and second community are only sake of clarity, rather than as limitation, the present invention In, a cell can be used as first community and second community simultaneously, and be serviced simultaneously by first device 1 and second device 2； That is, a cell can determine the reservation after each neighbor cell renewal according to the resource load information that its neighbor cell provides Frequency band and the user equipment for correspondingly dispatching the downlink of this cell, it can be aided in also by the reservation frequency band for adjusting this cell The user equipment of its neighbor cell schedule downlink.Thus, each cell in system can be higher in neighboring cell load When expand the reservation frequency band of itself to improve the service quality of neighbor cell, the reservation frequency band after also being expanded according to neighbor cell To improve the service quality of itself, it is achieved thereby that dynamically retaining frequency band adjustment, systematic function is improved.

It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example, this hair Bright first device 1 can be realized with second device 2 using application specific integrated circuit (ASIC) or any other similar hardware device. In one embodiment, software program of the invention can realize steps described above or function by computing device.Together Sample, software program of the invention (including related data structure) can be stored in computer readable recording medium storing program for performing.Separately Outside, some steps of the invention or function can employ hardware to realize, for example, coordinating as with processor so as to perform each step Rapid or function circuit.

It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.This Outside, it is clear that the word of " comprising " one is not excluded for other units or step, and odd number is not excluded for plural number.That is stated in system claims is multiple Unit or device can also be realized by a unit or device by software or hardware.The first, the second grade word is used for table Show title, and be not offered as any specific order.

Claims

1. a kind of method for dispatching the user equipment of downlink in first community, wherein, this method comprises the following steps：

After b receives the reservation frequency band from the second community, described second community based on resource load information renewal The resource load information of the second community, wherein, belong in the Physical Resource Block of variable frequency range, Signal to Interference plus Noise Ratio is predetermined less than one The Physical Resource Block utilization rate of snr threshold and neighbor cell is added more than the Physical Resource Block of a predetermined utilization rate threshold value In the reservation frequency band for entering the second community, the reservation frequency band of the second community is not used for in the second community User equipment provide downstream service；

D the reservation frequency band of the second community and reservation frequency band of the fixed first community determined by, are adjusted Spend the user equipment of downlink in the first community.

2. according to the method for claim 1, wherein, this method is further comprising the steps of before the step a：

The resource status fresh information of-acquisition first community；

- the resource status fresh information is supplied to the second community.

3. a kind of method for being used to aid in the scheduling of the user equipment of downlink in first community in second community, wherein, The first community is adjacent with the second community, and this method comprises the following steps：

A receives the resource load information from the first community；

B according to the resource load information of the first community and the channel condition information of the variable frequency range of the second community, The part physical resource block in the variable frequency range is selected, and selected Physical Resource Block is added and retained in frequency band, wherein, The reservation frequency band of the second community not be used to provide downstream service for the user in the second community；

Wherein described step B includes：

- be subordinated in the Physical Resource Block of variable frequency range and select Signal to Interference plus Noise Ratio to be less than a predetermined snr threshold, it is and adjacent small The Physical Resource Block utilization rate in area is added in the reservation frequency band more than the Physical Resource Block of a predetermined utilization rate threshold value；

C obtains the resource load letter of the second community after selected Physical Resource Block is added in the reservation frequency band Breath, and it is supplied to the first community.

4. according to the method for claim 3, wherein, this method is further comprising the steps of before the step B：

- receive the resource status fresh information from the first community and other cells adjacent with the second community；

- meet the when the resource status fresh information for judging the first community, the second community and other cells During one predetermined condition, the step B and C is performed.

5. according to the method for claim 4, wherein, first predetermined condition includes at least one of following：

The phase of Physical Resource Block utilization rate and the second community indicated by the resource status fresh information of-the second community The comparison result of Physical Resource Block utilization rate indicated by the resource status fresh information of adjacent cell meets the second predetermined condition；

The Physical Resource Block of GBR traffic indicated by the resource status fresh information of the neighbor cell of-second community uses Rate meets the 3rd predetermined condition.

6. the method according to any one of claim 3 to 5, wherein, this method is further comprising the steps of：

- when meeting at least one of following condition, it will be adjusted by the variable frequency range to the physical resource in the reservation frequency band Block is restored in the variable frequency range：

The Physical Resource Block utilization rate of GBR traffic indicated by the resource status fresh information of-second community meets the 4th Predetermined condition；

Physical Resource Block utilization rate indicated by the resource status fresh information of-second community is adjacent with the second community The comparison result of Physical Resource Block utilization rate indicated by the resource status fresh information of cell meets the 5th predetermined condition.

7. according to the method for claim 6, wherein, this method is further comprising the steps of：

- will by the variable frequency range adjust to it is described reservation frequency band in Physical Resource Block be restored in the variable frequency range after, The resource load information of the second community is obtained, and is supplied to the first community.

8. a kind of first device for being used to dispatch the user equipment of downlink in first community, wherein, the first device includes：

First acquisition device, for obtaining the resource load information of the first community and being supplied to adjacent with the first community Second community；

First receiving device, the money is based on for receiving the reservation frequency band from the second community, described second community The resource load information of the second community after the load information renewal of source, wherein, belong in the Physical Resource Block of variable frequency range, letter is dry Make an uproar than more than one predetermined utilization rate threshold value of the Physical Resource Block utilization rate less than a predetermined snr threshold and neighbor cell Physical Resource Block be added into the reservation frequency band of the second community, the reservation frequency band of the second community is not used for for institute The user equipment stated in second community provides downstream service；

First determining device, for the resource load information according to the second community, determine the reservation of the second community frequently Band；

Dispatching device, retain frequency band and the fixed first community for the second community determined by Retain frequency band, dispatch the user equipment of downlink in the first community.

9. first device according to claim 8, wherein, the first device performs before being additionally included in the first acquisition device The following device of operation：

Second acquisition device, for obtaining the resource status fresh information of the first community；

First provides device, for the resource status fresh information to be supplied into the second community.

10. a kind of second device for being used to aid in the scheduling of the user equipment of downlink in first community in second community, Wherein, the first community is adjacent with the second community, and the second device includes：

Frequency band adjusting apparatus, the variable frequency range for the resource load information according to the first community and the second community Channel condition information, select the part physical resource block in the variable frequency range, and selected Physical Resource Block is added Retain in frequency band, wherein, the reservation frequency band of the second community not be used to providing for the user in the second community descending Service；

Wherein, the frequency band adjusting apparatus is additionally operable to, and is subordinated in the Physical Resource Block of variable frequency range and is selected Signal to Interference plus Noise Ratio to be less than One predetermined snr threshold, and the Physical Resource Block utilization rate of neighbor cell provides more than the physics of a predetermined utilization rate threshold value Source block, add in the reservation frequency band；

3rd acquisition device, for after selected Physical Resource Block is added in the reservation frequency band, obtaining described second The resource load information of cell, and it is supplied to the first community.

11. second device according to claim 10, wherein, the second acquisition device is additionally included in before frequency band adjusting apparatus Perform the following device of operation：

3rd reception device, for receiving the money from the first community and other cells adjacent with the second community Source state updating information；

Judgment means, the resource status of the first community, the second community and other cells is judged for working as more When fresh information meets the first predetermined condition, trigger the frequency band adjusting apparatus and the 3rd acquisition device performs operation.

12. second device according to claim 11, wherein, first predetermined condition includes at least one of following：

13. the second device according to any one of claim 10 to 12, wherein, the second device also includes：

Reduction apparatus, for that when meeting at least one of following condition, will be adjusted by the variable frequency range to the reservation frequency band In Physical Resource Block be restored in the variable frequency range：

14. second device according to claim 13, wherein, the second device also includes：

Second provides device, and institute is restored to for will be adjusted by the variable frequency range to the Physical Resource Block in the reservation frequency band After stating in variable frequency range, the resource load information of the second community is obtained, and is supplied to the first community.

15. a kind of system for being used to be scheduled the user equipment of downlink in first community, including such as claim 8 or The second device any one of first device and claim 10 to 14 described in 9.