CN102958178B - A kind of frequency selectivity dispatching method, CQI report method, Apparatus and system - Google Patents
A kind of frequency selectivity dispatching method, CQI report method, Apparatus and system Download PDFInfo
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Abstract
The embodiment of the present invention provides a kind of frequency selectivity dispatching method, CQI report method, Apparatus and system, relate to the network communications technology, first determine that subband reports the condition of CQI by base station, when the CQI of arbitrary subband meets the condition reporting CQI, the CQI of UE to all subbands reports, base station, when carrying out frequency selective scheduling, is dispatched all UE according to the CQI that all UE in base station the last time reports.This technical scheme reports the condition of CQI by presetting, when satisfying condition, the CQI of all subbands is reported, ensure that UE reporting in time the CQI of each subband, reduce UE and report gap between the channel quality in CQI moment and the channel quality of UE scheduling instance, improve the accuracy of frequency selective scheduling.
Description
Technical field
The present invention relates to the network communications technology, particularly relate to a kind of frequency selectivity dispatching method, CQI report method, Apparatus and system.
Background technology
In Long Term Evolution (Long Term Evolution, LTE) system, the main shared channel mechanism adopted, for the resource of multiple users share, the position residing for mobile communication system user is different, and the channel quality of its Signal transmissions is also different.At time-division Long Term Evolution (Time Division-Long TermEvolution, TD-LTE) in system, due to OFDM (Orthogonal Frequency DivisionMultiplexing, OFDM) application of technology, channel selectivity scheduling can be carried out on frequency domain, by distributing best band resource for each user, obtain the multi-user diversity gain on frequency domain, improve throughput and the availability of frequency spectrum of system.
The effect of frequency selective scheduling depends on sub-band channel quality instruction (Channel QualityIndicator, CQI) reliability of information, namely subscriber equipment (User Equipment, UE) reports the consistency of the channel quality in CQI moment and the channel quality of UE scheduling instance.CQI reports and reports in units of subband, and for 20M system bandwidth, 20MHz bandwidth is divided into 13 subbands, and front 12 sons are with 8 Physical Resource Block (Physical Resource Block, PRB), and last subband only has 4 PRB.Evolved base station (Evolved Node B, eNB) carries out frequency selective scheduling according to sub-band CQI information.Because LTE system bandwidth is comparatively large, the PRB resource being positioned at different frequency possesses different frequency selective fading characteristics, therefore needs the UE that schedules channel quality is best on each PRB, to maximize the availability of frequency spectrum of the resource of the PRB of each subband.
As shown in Figure 1, be described for 3 users.In this CQI cycle, subband 1 ~ 3 is that the channel quality of UE1 is best, so dispatch UE1 on the subband of subband 1 ~ 3 correspondence; Subband 4 ~ 9 is that the channel quality of UE2 is best, these positions scheduling UE2; In like manner, subband 10 ~ 13 is that the channel quality of UE3 is best, these positions scheduling UE3.
Report the technical scheme of CQI to be a periodic report, first set the report cycle of subband, each UE periodically reports the CQI of each subband.
When subband CQI report cycle is greater than channel coherency time, UE reports the channel quality in CQI moment to differ larger with the channel quality of UE scheduling instance.
As shown in Figure 2, CQI report cycle is 80ms, and in 80ms, subband 1 exists interference, and the actual channel conditions at subband 1 of UE as illustrated in solid line in figure 2, the CQI that UE reports as shown in phantom in Figure 2, can not embody the situation of this channel variation as seen with the subband CQI of 80ms periodic report.
To sum up, the CQI that setting cycle carries out reporting accurately cannot reflect the change of channel quality, and the frequency selection scheduling carried out according to this CQI information is also just not accurate enough.
Summary of the invention
The embodiment of the present invention provides a kind of frequency selectivity dispatching method, CQI report method, Apparatus and system, to improve the accuracy of frequency selective scheduling.
A kind of frequency selectivity dispatching method, comprising:
The CQI that base station receives the arbitrary subband of UE corresponding to it meet preset report the condition of subband CQI time, the CQI of each subband corresponding to this UE reported;
Base station, when carrying out frequency selective scheduling, is dispatched all UE according to the CQI that all UE the last times under this base station report.
A kind of frequency selective scheduling device, comprising:
Receiving element, the CQI for receiving the arbitrary subband of UE corresponding to it meet preset report the condition of subband CQI time, the CQI of each subband corresponding to this UE reported;
Scheduling unit, for when carrying out frequency selective scheduling, dispatches all UE according to the CQI that all UE the last times under this base station report.
A kind of CQI report method, comprising:
UE determines that the CQI of arbitrary subband of its correspondence meets the condition reporting subband CQI preset;
The CQI of UE to all subbands of its correspondence reports.
A kind of CQI reporting device, comprising:
Determining unit, for determining that the CQI of arbitrary subband that UE is corresponding meets the condition reporting subband CQI preset;
Report unit, for reporting the CQI of all subbands corresponding to UE.
A system for frequency selective scheduling, comprising:
Base station, CQI for receiving the arbitrary subband of UE corresponding to it meet preset report the condition of subband CQI time, the CQI of each subband corresponding to this UE reported, and when carrying out frequency selective scheduling, according to the CQI that all UE the last times under this base station report, described all UE are dispatched;
UE, the CQI for the arbitrary subband determining its correspondence meets the condition reporting the CQI of subband preset, and reports the CQI of each subband of its correspondence.
The embodiment of the present invention provides a kind of frequency selectivity dispatching method, Apparatus and system, CQI report method and device, first determine that subband reports the condition of CQI by base station, when the CQI of arbitrary subband meets the condition reporting CQI, the CQI of UE to all subbands reports, base station, when carrying out frequency selective scheduling, is dispatched all UE according to the CQI that all UE in base station the last time reports.This technical scheme reports the condition of CQI by presetting, when satisfying condition, the CQI of all subbands is reported, ensure that UE reporting in time the CQI of each subband, reduce UE and report gap between the channel quality in CQI moment and the channel quality of UE scheduling instance, improve the accuracy of frequency selective scheduling.
Accompanying drawing explanation
The curve chart of the CQI value of each subband of 3 user that Fig. 1 provides for prior art;
The comparison diagram of the CQI by periodic report that Fig. 2 provides for prior art and actual CQI;
One of method flow diagram of the frequency selective scheduling that Fig. 3 provides for the embodiment of the present invention;
The comparison diagram by the CQI reported according to change thresholding and actual CQI that Fig. 4 provides for the embodiment of the present invention;
The curve chart of the CQI value of each subband of 3 user that Fig. 5 provides for the embodiment of the present invention;
Method flow diagram cell edge UE being determined to scheduling scope that Fig. 6 provides for the embodiment of the present invention;
The method flow diagram two of the frequency selective scheduling that Fig. 7 provides for the embodiment of the present invention;
The apparatus structure schematic diagram of a kind of frequency selective scheduling that Fig. 8 provides for the embodiment of the present invention;
A kind of CQI report method flow chart that Fig. 9 provides for the embodiment of the present invention;
A kind of CQI reporting device schematic diagram that Figure 10 provides for the embodiment of the present invention;
The system configuration schematic diagram of a kind of frequency selective scheduling that Figure 11 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of frequency selectivity dispatching method, Apparatus and system, CQI report method and device, first determine that subband reports the condition of CQI by base station, when the CQI of arbitrary subband meets the condition reporting CQI, the CQI of UE to all subbands reports, base station, when carrying out frequency selective scheduling, is dispatched all UE according to the CQI that all UE in base station the last time reports.This technical scheme reports the condition of CQI by presetting, when satisfying condition, the CQI of all subbands is reported, ensure that UE reporting in time the CQI of each subband, reduce UE and report gap between the channel quality in CQI moment and the channel quality of UE scheduling instance, improve the accuracy of frequency selective scheduling.
As shown in Figure 3, the embodiment of the present invention provides a kind of frequency selectivity dispatching method, comprising:
The CQI that S301, base station receive the arbitrary subband of UE corresponding to it meet preset report the condition of subband CQI time, the CQI of each subband corresponding to this UE reported;
S302, base station, when carrying out frequency selective scheduling, are dispatched all UE according to the CQI that all UE the last times under this base station report.
By presetting the report condition of the CQI of subband, and when meeting report condition, the CQI of each subband is reported, ensure that UE reporting in time the CQI of subband, reduce UE and report gap between the channel quality in CQI moment and the channel quality of UE scheduling instance, improve the accuracy of frequency selective scheduling.
Preferably, UE reports the condition of the CQI of subband, Ke Yiwei:
The change amplitude of subband CQI is greater than the CQI preset and changes thresholding.
Concrete, CQI changes thresholding and can set based on experience value, reporting in time of subband CQI can be ensured, preferably, as shown in Figure 4, the change threshold value of CQI is set to 5, in Fig. 4, solid line is the real channel situation of subband 1, dotted line is report according to UE the CQI obtained, and visible base station can obtain the channel situation of user in time, and the CQI that UE reports can reflect the change of channel quality more accurately.
Ensure reporting in time of CQI by the change thresholding arranging CQI, reflect the situation of change of channel quality in time, improve the accuracy of frequency selective scheduling.
Certainly, those skilled in the art can set other available conditions reporting the CQI of subband, describes no longer one by one at this.
Preferably, while the change amplitude that in S301, UE reports the condition of subband CQI to be defined as subband CQI is greater than the CQI change thresholding preset, CQI report cycle can also be set, when last time, UE reported the time of the CQI of each subband to reach report cycle to distance, CQI is reported, to ensure the timely grasp of eNB to channel situation.
Preferably, the CQI reported according to all UE the last times under this base station in S302 dispatches all UE, is specifically as follows all subbands, the UE that the CQI value in scheduling subband is the highest.
The UE that CQI value in scheduling subband is the highest, concrete, as shown in Figure 5, be described for 3 users.Subband 2 ~ 3 is that the channel quality of UE1 is best, so dispatch UE1 on the subband of subband 2 ~ 3 correspondence; Subband 4 ~ 9 is that the channel quality of UE2 is best, these positions scheduling UE2; In like manner, subband 10 ~ 13 is that the channel quality of UE3 is best, these positions scheduling UE3.
Preferably, for cell edge UE, while carrying out frequency selective scheduling, note avoiding producing presence of intercell interference with neighbor cell, thus introduce new interference.Therefore, as shown in Figure 6, in S302, before all UE being dispatched according to the last CQI reported of all UE under this base station, also comprise:
S601, for cell edge UE, determine that cell edge UE can not produce the range of channels of presence of intercell interference to neighbor cell;
S602, using the scheduling scope of range of channels as cell edge UE.
Preferably, range of channels in S601 can adopt interference coordination algorithm to determine, interference coordination algorithm is a kind of cell radio resource management function that the situations such as the use of multiple local resource and load are carried out of considering, by management cell radio resource, presence of intercell interference is inhibited.Inter-Cell Interference Coordination algorithm limits with the Radio Resource use of the mode of inter-cell coordination to each community.PRB adjacent area being produced to interference to give advance notice adjacent area by Serving cell, and Control and Schedule is removed according to the information received in adjacent area, to avoid the user of neighbor cell to use identical running time-frequency resource, reduces mutual interference.Interference coordination algorithm is divided into static interference coordination algorithm and coordinating semi-static interference algorithm, illustrate with static interference coordination algorithm, edge UE for the fixed configurations community, 3 communities 1 of a base station uses front 33 PRB, the edge UE of community 2 uses middle 33 PRB, and the edge UE of community 3 uses last 34 PRB.Edge UE needs to carry out frequency selection scheduling within the scope of the PRB of interference coordination algorithm assigns, and namely the edge customer of community 1 can only carry out frequency selection scheduling within the scope of front 33 PRB, this ensure that can not introduce new interference at cell edge, ensure that systematic function.
Certainly, those skilled in the art can determine the range of channels that can not produce presence of intercell interference to neighbor cell with other feasible patterns, describes no longer one by one herein.
By determining to produce the range of channels of presence of intercell interference to neighbor cell and to dispatch in scope, avoiding and introducing new interference at cell edge, improve channel transmission quality.
As shown in Figure 7, the embodiment of the present invention provides a kind of concrete grammar of frequency selective scheduling, comprising:
The change thresholding of S701, setting CQI;
S702, determine the report cycle of CQI;
What S703, reception UE carried out CQI according to change thresholding and report cycle reports;
S704, judge whether to there is cell edge UE, if so, then carry out S705, if not, then carry out S706;
S705, sub-band bin by area interference algorithm configuration cell edge UE, and be defined as the scheduling scope of cell edge UE.
S706, the carrying out of all UE to be dispatched.
As shown in Figure 8, the embodiment of the present invention provides a kind of frequency selective scheduling device, comprising:
Receiving element 801, the CQI for receiving the arbitrary subband of UE corresponding to it meet preset report the condition of subband CQI time, the CQI of each subband corresponding to this UE reported;
Scheduling unit 802, for when carrying out frequency selective scheduling, according to the CQI that all UE the last times under this base station report, all UE are dispatched.
By presetting the report condition of the CQI of subband, and when meeting report condition, the CQI of each subband is reported, ensure that UE reporting in time the CQI of subband, reduce UE and report gap between the channel quality in CQI moment and the channel quality of UE scheduling instance, improve the accuracy of frequency selective scheduling.
Preferably, in receiving element 801, UE reports the condition of the CQI of subband, Ke Yiwei:
The change amplitude of subband CQI is greater than the CQI preset and changes thresholding.
Concrete, CQI changes thresholding and can set based on experience value, reporting in time of subband CQI can be ensured, preferably, as shown in Figure 4, the change threshold value of CQI is set to 5, in Fig. 4, solid line is the real channel situation of subband 1, dotted line is report according to UE the CQI obtained, and visible base station can obtain the channel situation of user in time, and the CQI that UE reports can reflect the change of channel quality more accurately.
Ensure reporting in time of CQI by the change thresholding arranging CQI, reflect the situation of change of channel quality in time, improve the accuracy of frequency selective scheduling.
Certainly, those skilled in the art can set other available conditions reporting the CQI of subband, describes no longer one by one at this.
Preferably, while the change amplitude that in receiving element 801, UE reports the condition of subband CQI to be defined as subband CQI is greater than the CQI change thresholding preset, report cycle can also be set for CQI, when last time, UE reported the time of the CQI of each subband to reach report cycle to distance, CQI is reported, to ensure the timely grasp of eNB to channel situation.
Preferably, the CQI that scheduling unit 802 reported according to all UE the last times under this base station dispatches all UE, is specifically as follows all subbands, the UE that the CQI value in scheduling subband is the highest.
The UE that CQI value in scheduling subband is the highest, concrete, as shown in Figure 5, be described for 3 users.Subband 2 ~ 3 is that the channel quality of UE1 is best, so dispatch UE1 on the subband of subband 2 ~ 3 correspondence; Subband 4 ~ 9 is that the channel quality of UE2 is best, these positions scheduling UE2; In like manner, subband 10 ~ 13 is that the channel quality of UE3 is best, these positions scheduling UE3.
Preferably, for cell edge UE, while carrying out frequency selective scheduling, note avoiding producing presence of intercell interference with neighbor cell, thus introduce new interference.Therefore, before scheduling unit 802 is dispatched all UE according to the CQI that all UE the last time under this base station reports, also for:
For cell edge UE, determine that cell edge UE can not produce the range of channels of presence of intercell interference to neighbor cell;
Using the scheduling scope of range of channels as cell edge UE.
Preferably, range of channels can adopt interference coordination algorithm to determine, interference coordination algorithm is a kind of cell radio resource management function that the situations such as the use of multiple local resource and load are carried out of considering, by management cell radio resource, presence of intercell interference is inhibited.Inter-Cell Interference Coordination algorithm limits with the Radio Resource use of the mode of inter-cell coordination to each community.PRB adjacent area being produced to interference to give advance notice adjacent area by Serving cell, and Control and Schedule is removed according to the information received in adjacent area, to avoid the user of neighbor cell to use identical running time-frequency resource, reduces mutual interference.Interference coordination algorithm is divided into static interference coordination algorithm and coordinating semi-static interference algorithm, illustrate with static interference coordination algorithm, edge UE for the fixed configurations community, 3 communities 1 of a base station uses front 33 PRB, the edge UE of community 2 uses middle 33 PRB, and the edge UE of community 3 uses last 34 PRB.Edge UE needs to carry out frequency selection scheduling within the scope of the PRB of interference coordination algorithm assigns, and namely the edge customer of community 1 can only carry out frequency selection scheduling within the scope of front 33 PRB, this ensure that can not introduce new interference at cell edge, ensure that systematic function.
Certainly, those skilled in the art can determine the range of channels that can not produce presence of intercell interference to neighbor cell with other feasible patterns, describes no longer one by one herein.
By determining to produce the range of channels of presence of intercell interference to neighbor cell and to dispatch in scope, avoiding and introducing new interference at cell edge, improve channel transmission quality.
As shown in Figure 9, the embodiment of the present invention provides a kind of CQI report method, comprising:
S901, UE determine that the CQI of arbitrary subband of its correspondence meets the condition reporting subband CQI preset;
S902, UE CQI to its corresponding each subband reports.
By presetting the report condition of the CQI of subband, and when meeting report condition, the CQI of each subband is reported, ensure that UE reporting in time the CQI of subband, reduce UE and report gap between the channel quality in CQI moment and the channel quality of UE scheduling instance, improve the accuracy of frequency selective scheduling.
Preferably, the condition of subband CQI is reported, Ke Yiwei:
The change amplitude of subband CQI is greater than the CQI preset and changes thresholding.
Concrete, CQI changes thresholding and can set based on experience value, reporting in time of subband CQI can be ensured, preferably, as shown in Figure 4, the change threshold value of CQI is set to 5, in Fig. 4, solid line is the real channel situation of subband 1, dotted line is report according to UE the CQI obtained, and visible base station can obtain the channel situation of user in time, and the CQI that UE reports can reflect the change of channel quality more accurately.
Ensure reporting in time of CQI by the change thresholding arranging CQI, reflect the situation of change of channel quality in time, improve the accuracy of frequency selective scheduling.
Certainly, those skilled in the art can set other available conditions reporting subband CQI, describes no longer one by one at this.
As shown in Figure 10, the embodiment of the present invention provides a kind of CQI reporting device, comprising:
Determining unit 1001, for determining that the CQI of arbitrary subband that UE is corresponding meets the condition reporting subband CQI preset;
Report unit 1002, for reporting the CQI of each subband corresponding to UE.
By presetting the report condition of the CQI of subband, and when meeting report condition, the CQI of each subband is reported, ensure that UE reporting in time the CQI of subband, reduce UE and report gap between the channel quality in CQI moment and the channel quality of UE scheduling instance, improve the accuracy of frequency selective scheduling.
Preferably, the condition of the CQI of subband is reported, Ke Yiwei:
The amplitude that the CQI of subband changes is greater than the CQI change thresholding preset.
Concrete, CQI changes thresholding and can set based on experience value, reporting in time of subband CQI can be ensured, preferably, as shown in Figure 4, the change threshold value of CQI is set to 5, in Fig. 4, solid line is the real channel situation of subband 1, dotted line is report according to UE the CQI obtained, and visible base station can obtain the channel situation of user in time, and the CQI that UE reports can reflect the change of channel quality more accurately.
Ensure reporting in time of CQI by the change thresholding arranging CQI, reflect the situation of change of channel quality in time, improve the accuracy of frequency selective scheduling.
Certainly, those skilled in the art can set other available conditions reporting subband CQI, describes no longer one by one at this.
As shown in figure 11, the embodiment of the present invention provides a kind of system of frequency selective scheduling, comprising:
Base station 1101, CQI for receiving the arbitrary subband of UE corresponding to it meet preset report the condition of subband CQI time, the CQI of each subband corresponding to this UE reported, and when carrying out frequency selective scheduling, according to the CQI that all UE the last times under this base station 1101 report, all UE are dispatched;
UE1102, the CQI for the arbitrary subband determining its correspondence meets the condition reporting subband CQI preset, and reports the CQI of each subband of its correspondence.
By presetting the report condition of the CQI of subband, and when meeting report condition, the CQI of each subband is reported, ensure that UE reporting in time the CQI of subband, reduce UE and report gap between the channel quality in CQI moment and the channel quality of UE scheduling instance, improve the accuracy of frequency selective scheduling.
Preferably, if it is cell edge UE that base station exists UE1102 for 1101 times, while carrying out frequency selective scheduling, note avoiding producing presence of intercell interference with neighbor cell, thus introduce new interference.Therefore, base station 1101 also comprises before dispatching all UE1102 according to the CQI that all UE1102 the last times under this base station 1101 report:
For cell edge UE, determine that cell edge UE can not produce the range of channels of presence of intercell interference to neighbor cell;
Using the scheduling scope of range of channels as cell edge UE.
Preferably, range of channels can adopt interference coordination algorithm to determine, interference coordination algorithm is a kind of cell radio resource management function that the situations such as the use of multiple local resource and load are carried out of considering, by management cell radio resource, presence of intercell interference is inhibited.Inter-Cell Interference Coordination algorithm limits with the Radio Resource use of the mode of inter-cell coordination to each community.PRB adjacent area being produced to interference to give advance notice adjacent area by Serving cell, and Control and Schedule is removed according to the information received in adjacent area, to avoid the user of neighbor cell to use identical running time-frequency resource, reduces mutual interference.Interference coordination algorithm is divided into static interference coordination algorithm and coordinating semi-static interference algorithm, illustrate with static interference coordination algorithm, edge UE1102 for the fixed configurations community, 3 communities 1 of a base station 1101 uses front 33 PRB, the edge UE1102 of community 2 uses middle 33 PRB, and the edge UE1102 of community 3 uses last 34 PRB.Edge UE1102 needs to carry out frequency selection scheduling within the scope of the PRB of interference coordination algorithm assigns, namely the edge customer of community 1 can only carry out frequency selection scheduling within the scope of front 33 PRB, this ensure that and can not introduce new interference at cell edge, ensure that systematic function.
Certainly, those skilled in the art can determine the range of channels that can not produce presence of intercell interference to neighbor cell with other feasible patterns, describes no longer one by one herein.
By determining to produce the range of channels of presence of intercell interference to neighbor cell and to dispatch in scope, avoiding and introducing new interference at cell edge, improve channel transmission quality.
The embodiment of the present invention provides a kind of frequency selectivity dispatching method, Apparatus and system, CQI report method and device, first determine that subband reports the condition of CQI by base station, when the CQI of arbitrary subband meets the condition reporting CQI, the CQI of UE to all subbands reports, base station, when carrying out frequency selective scheduling, is dispatched all UE according to the CQI that all UE in base station the last time reports.This technical scheme reports the condition of CQI by presetting, when satisfying condition, the CQI of all subbands is reported, ensure that UE reporting in time the CQI of each subband, reduce UE and report gap between the channel quality in CQI moment and the channel quality of UE scheduling instance, improve the accuracy of frequency selective scheduling.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a frequency selectivity dispatching method, is characterized in that, comprising:
The channel quality indicator (CQI) of the arbitrary subband of base station receives user equipment UE corresponding to it meet preset report the condition of subband CQI time, the CQI of each subband corresponding to this UE reported, wherein, the condition of subband CQI is reported to be that the change amplitude of subband CQI is greater than the CQI preset and changes thresholding described in;
Base station, when carrying out frequency selective scheduling, is dispatched described all UE according to the CQI that all UE the last times under this base station report.
2. the method for claim 1, is characterized in that, before the described CQI information reported according to all UE the last times under base station is dispatched described all UE, also comprises:
For cell edge UE, determine that described cell edge UE can not produce the range of channels of presence of intercell interference to neighbor cell;
Using the scheduling scope of described range of channels as described cell edge UE.
3. a frequency selective scheduling device, is characterized in that, comprising:
Receiving element, channel quality indicator (CQI) for receiving the arbitrary subband of user equipment (UE) corresponding to it meet preset report the condition of subband CQI time, the CQI of each subband corresponding to this UE reported, wherein, the condition of subband CQI is reported to be that the change amplitude of subband CQI is greater than the CQI preset and changes thresholding described in;
Scheduling unit, for when carrying out frequency selective scheduling, dispatches described all UE according to the CQI that all UE the last times under base station report.
4. device as claimed in claim 3, is characterized in that, before the described CQI reported according to all UE the last times under base station dispatches described all UE, described scheduling unit also for:
For cell edge UE, determine that described cell edge UE can not produce the range of channels of presence of intercell interference to neighbor cell;
Using the scheduling scope of described range of channels as described cell edge UE.
5. a CQI report method, is characterized in that, comprising:
User equipment (UE) determines that the channel quality indicator (CQI) of arbitrary subband of its correspondence meets the condition reporting subband CQI preset, wherein, described in report the condition of subband CQI to be that the change amplitude of subband CQI is greater than the CQI preset and changes thresholding;
The CQI of UE to each subband of its correspondence reports.
6. a CQI reporting device, is characterized in that, comprising:
Determining unit, for determining that the channel quality indicator (CQI) of arbitrary subband that user equipment (UE) is corresponding meets the condition reporting subband CQI preset, wherein, the condition of subband CQI is reported to be that the change amplitude of subband CQI is greater than the CQI preset and changes thresholding described in;
Report unit, for reporting the CQI of each subband corresponding to UE.
7. a system for frequency selective scheduling, is characterized in that, comprising:
Base station, channel quality indicator (CQI) for receiving the arbitrary subband of user equipment (UE) corresponding to it meet preset report the condition of subband CQI time, the CQI of each subband corresponding to this UE reported, and when carrying out frequency selective scheduling, according to the CQI that all UE the last times under this base station report, described all UE are dispatched, wherein, the condition of subband CQI is reported to be that the change amplitude of subband CQI is greater than the CQI preset and changes thresholding described in;
UE, for the CQI of the arbitrary subband determining its correspondence meet preset described in report the condition of subband CQI, and the CQI of each subband of its correspondence to be reported.
8. system as claimed in claim 7, is characterized in that, before the described CQI information reported according to all UE the last times under base station is dispatched described all UE, described base station also for:
For cell edge UE, determine that described cell edge UE can not produce the range of channels of presence of intercell interference to neighbor cell;
Using the scheduling scope of described range of channels as described cell edge UE.
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