CN103179673B - The dispatching method and device of resource - Google Patents

The dispatching method and device of resource Download PDF

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Publication number
CN103179673B
CN103179673B CN201110442331.7A CN201110442331A CN103179673B CN 103179673 B CN103179673 B CN 103179673B CN 201110442331 A CN201110442331 A CN 201110442331A CN 103179673 B CN103179673 B CN 103179673B
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power
pdcch
scheduled
current terminal
schedulable
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CN103179673A (en
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徐海生
曾召华
焦凌云
刘洁
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ZTE Corp
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ZTE Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The invention provides a kind of dispatching method of resource and device, wherein, this method includes：Initialize the general power of the physical downlink control channel PDCCH of schedulable respectively in each scheduling instance；Obtain the PDCCH of current terminal to be scheduled demand power；In the case where judging the PDCCH of current terminal to be scheduled general power of the demand power no more than the PDCCH of schedulable, scheduling of resource is carried out to current terminal to be scheduled.The present invention solves the restricted problem of coverage of PDCCH caused by the transmit power in the degree of accuracy and the every RE of limitation PDCCH channels in correlation technique to reducing signal caused by overload power progress peak clipping, so as to effectively prevent the damage due to power overload to radio-frequency unit, reduce the influence that overload power is carried out peak clipping and brought, so as to improve the degree of accuracy of signal.

Description

The dispatching method and device of resource
Technical field
The present invention relates to the communications field, in particular to the dispatching method and device of a kind of resource.
Background technology
In such as LTE (Long Term Evolution, Long Term Evolution)/LTE-A (Long Term Evolution Advanced, advanced long-term evolution system) etc. OFDMA (Orthogonal Frequency Division Multiple Access, OFDM) in system, the descending general power of Base Transmitter can by hardware, ascending power is limited, network is done Disturb etc. the influence of factors and be limited to a certain power level, however, in base station side to terminal (User Equipment, referred to as UE) when doing resource allocation, if base station does not consider to launch the limiting factor that descending power is subject to and blind Mesh makes scheduling decision, and damage may be brought to radio-frequency unit, and causes radio-frequency unit operation irregularity, or causes transmitting Downstream signal distortion, so as to influence the demodulation performance of terminal-pair signal.
However, when producing power overload because of blindness scheduling, the method routinely used is to do self in radio-frequency unit Protection, overload power carries out peak clipping caused by being dispatched to blindness, then sends the signal after peak clipping；Or in base station Hold the transmission of the Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH) of configuration Performance number is no more than certain threshold value, so as to reach the purpose of power nonoverload.But peak clipping meeting is carried out to overload power The demodulation performance of terminal-pair signal is influenceed, reduces the degree of accuracy of signal；The every RE of limitation PDCCH channels (resource element, Resource units) on transmit power PDCCH coverage can be caused to be restricted.
The content of the invention
The invention provides a kind of dispatching method of resource and device, at least to solve to enter overload power in correlation technique The degree of accuracy of signal is reduced caused by row peak clipping and limits PDCCH caused by the transmit power on the every RE of PDCCH channels The restricted problem of coverage.
According to an aspect of the invention, there is provided a kind of dispatching method of resource, it includes：In each scheduling instance point Not Chu Shihua schedulable physical downlink control channel PDCCH general power；Obtain the PDCCH of current terminal to be scheduled need Seek power；In the feelings for general power of the demand power no more than the PDCCH of schedulable for judging the PDCCH of current terminal to be scheduled Under condition, scheduling of resource is carried out to current terminal to be scheduled.
Preferably, the step of general power for initializing the PDCCH of schedulable respectively in each scheduling instance, includes：Obtain every General power Port Power, CRS (Cell Reference Signal, cell reference signals) Power, HI of individual port (Physical Hybrid ARQ Indicator Channel, Physical HARQ Indicator Channel) Power and CFI (control Format indicator, control channel symbol indicated value) Power, wherein, each port of each port including cell or into Each port of sub-carrier；According to the general power Port Power of each port of acquisition, CRS Power, HI Power and CFI Power determine the PDCCH of the schedulable of each port general power, wherein, the PDCCH's of the schedulable of each port is total Power=Port Power-CRS Power-HI Power-CFI Power.
Preferably, the step of demand power for obtaining the PDCCH of current terminal to be scheduled, includes：According to priority orders Obtain (Control Channel Element-Energy Per Resource Element, the control of current terminal to be scheduled Channel unit power processed) CCE-EPRE the and CCE degree of polymerization；Calculated according to CCE-EPRE the and CCE degree of polymerization of acquisition and currently wait to adjust The PDCCH of the terminal of degree demand power, wherein, the PDCCH of current terminal to be scheduled demand power=CCE-EPRE × 36 × CCE degree of polymerization.
Preferably, it is total no more than the PDCCH of schedulable in the demand power for judging the PDCCH of current terminal to be scheduled Before power, the dispatching method of above-mentioned resource also includes：Judge whether the PDCCH of the schedulable of initialization general power is more than Zero；If judging, the PDCCH of the schedulable of initialization general power is more than zero, judges the PDCCH of current terminal to be scheduled Demand power whether no more than schedulable PDCCH general power, otherwise, not to terminal carry out scheduling of resource.
Preferably, the step of carrying out scheduling of resource to current terminal to be scheduled includes：It is pre- for current terminal to be scheduled PDCCH power resources needed for the current terminal to be scheduled of distribution；Judge whether to find the position of the PDCCH power resources of predistribution Put；If it is not, it is not then the PDCCH power resources needed for current terminal distribution to be scheduled.
Preferably, after carrying out scheduling of resource to current terminal to be scheduled, the dispatching method of above-mentioned resource also includes：If The position of the PDCCH power resources of predistribution is found, for needed for current terminal distribution to be scheduled currently terminal to be scheduled After PDCCH power resources, according to the PDCCH of the schedulable of initialization general power and the current terminal to be scheduled of acquisition The PDCCH of the schedulable of PDCCH demand power renewal initialization general power.
According to another aspect of the present invention, there is provided a kind of dispatching device of resource, it includes：Processing unit, for Each scheduling instance initializes the PDCCH of schedulable general power respectively；Acquiring unit, for obtaining current terminal to be scheduled PDCCH demand power；Scheduling unit, for being not more than in the demand power for the PDCCH for judging current terminal to be scheduled In the case of the PDCCH of schedulable general power, scheduling of resource is carried out to current terminal to be scheduled.
Preferably, processing unit includes：First acquisition module, for obtain each port general power Port Power, CRS Power, HI Power and CFI Power, wherein, each port of each port including cell or into the every of sub-carrier Individual port；First processing module, general power Port Power, CRS Power, HI for each port according to acquisition Power and CFI Power determine the PDCCH of the schedulable of each port general power, wherein, the schedulable of each port PDCCH general power=Port Power-CRS Power-HI Power-CFI Power.
Preferably, acquiring unit includes：Second acquisition module, for obtaining current end to be scheduled according to priority orders CCE-EPRE the and CCE degree of polymerization at end；Second processing module, work as being calculated according to CCE-EPRE the and CCE degree of polymerization of acquisition The PDCCH of preceding terminal to be scheduled demand power, wherein, the PDCCH of current terminal to be scheduled demand power=CCE- EPRE × 36 × CCE the degree of polymerization.
Preferably, the dispatching device of above-mentioned resource also includes：First judging unit, the schedulable initialized for judgement Whether PDCCH general power is more than zero；Second judging unit, the total work for the PDCCH in the schedulable for judging initialization When rate is more than zero, judge whether the PDCCH of current terminal to be scheduled demand power is not more than the PDCCH of schedulable total work Rate, otherwise, scheduling of resource is not carried out to current terminal to be scheduled.
Preferably, scheduling unit includes：Distribute module, it is current to be scheduled for being pre-allocated for current terminal to be scheduled PDCCH power resources needed for terminal；Judge module, the position of the PDCCH power resources for judging whether to find predistribution； Scheduler module, for being not current terminal to be scheduled when judging not find the position of PDCCH power resources of predistribution PDCCH power resources needed for distribution.
Preferably, the dispatching device of above-mentioned resource also includes：Updating block, for finding the PDCCH power of predistribution During resource location, after current terminal distribution to be scheduled currently the PDCCH power resources needed for terminal to be scheduled, according to The PDCCH of the PDCCH of the schedulable of initialization general power and the current terminal to be scheduled obtained demand power renewal is just The PDCCH of the schedulable of beginningization general power.
In the present invention, first according to the PDCCH of the schedulable of acquisition general power and current terminal to be scheduled PDCCH demand power judges whether the PDCCH of current terminal to be scheduled demand power is not more than the PDCCH's of schedulable General power, when judging to be, scheduling of resource just is carried out to current terminal to be scheduled, i.e. before scheduling of resource is carried out to terminal, First judged, meeting the PDCCH of current terminal to be scheduled general power of the demand power no more than the PDCCH of schedulable Condition when, then to terminal carry out scheduling of resource, power overload is prevented and protected in advance, avoids the occurrence of power overload Phenomenon, solve the degree of accuracy and limitation PDCCH to reducing signal caused by overload power progress peak clipping in correlation technique The PDCCH restricted problem of coverage caused by transmit power on the every RE of channel, so as to effectively prevent due to work( Rate overloads the damage to radio-frequency unit, reduces the influence that overload power is carried out peak clipping and brought, so as to improve the standard of signal Exactness.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of preferable structure chart of the dispatching device of resource according to embodiments of the present invention；
Fig. 2 is a kind of preferable structure chart of processing unit according to embodiments of the present invention；
Fig. 3 is a kind of preferable structure chart of acquiring unit according to embodiments of the present invention；
Fig. 4 is a kind of preferable structure chart of scheduling unit according to embodiments of the present invention；
Fig. 5 is another preferable structure chart of the dispatching device of resource according to embodiments of the present invention；
Fig. 6 is another preferable structure chart of the dispatching device of resource according to embodiments of the present invention；
Fig. 7 is a kind of preferable flow chart of the dispatching method of resource according to embodiments of the present invention；
Fig. 8 is another preferable flow chart of the dispatching method of resource according to embodiments of the present invention；
Fig. 9 is the preferable signal of one kind that the dispatching method of resource according to embodiments of the present invention is implemented in LTE system Figure；
Figure 10 is that one kind that the dispatching method of resource according to embodiments of the present invention is implemented in lte-a system is preferably shown It is intended to.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
In the following examples, communication can be realized by the combination of wireless connection or wired connection or both, The present invention is not limited this.
Embodiment 1
Fig. 1 is a kind of preferable structure chart of the dispatching device of resource according to embodiments of the present invention, as shown in figure 1, should The dispatching device of resource includes：Processing unit 102, for initialized respectively in each scheduling instance schedulable PDCCH it is total Power；Acquiring unit 104 is used for the demand power for obtaining the PDCCH of current terminal to be scheduled；Scheduling unit 106, with acquisition Unit 104 and processing unit 102 communicate, can for being not more than in the demand power for the PDCCH for judging current terminal to be scheduled In the case of the PDCCH of scheduling general power, scheduling of resource is carried out to current terminal to be scheduled.
In above preferred embodiment, first according to the PDCCH of the schedulable of acquisition general power and current to be scheduled Whether the PDCCH of terminal demand power judges the PDCCH of current terminal to be scheduled demand power no more than schedulable PDCCH general power, when judging to be, scheduling of resource just is carried out to current terminal to be scheduled, i.e. resource is being carried out to terminal Before scheduling, first judged, be not more than the PDCCH of schedulable in the demand power for the PDCCH for meeting current terminal to be scheduled General power condition when, then to terminal carry out scheduling of resource, power overload is prevented and protected in advance, avoids the occurrence of work( The phenomenon of rate overload, solve the degree of accuracy and limit to reducing signal caused by overload power progress peak clipping in correlation technique The PDCCH restricted problem of coverage caused by transmit power on the every RE of PDCCH channels processed, so as to effectively prevent Due to damage of the power overload to radio-frequency unit, reduce the influence that overload power is carried out peak clipping and brought, so as to improve letter Number the degree of accuracy.
On the basis of above-described embodiment, the invention provides a kind of preferable processing unit 102, as shown in Fig. 2 at this Reason unit 102 includes：First acquisition module 1021, for obtain the general power Port Power of each port, CRS Power, HI Power and CFI Power, wherein, each port includes each port of cell or each port into sub-carrier；The One processing module 1022, communicated with the first acquisition module 1021, the general power Port for each port according to acquisition Power, CRS Power, HI Power and CFI Power determine the PDCCH of the schedulable of each port general power, its In, the PDCCH of the schedulable of each port general power=Port Power-CRS Power-HI Power-CFI Power. In the present embodiment, before scheduling of resource is carried out to terminal, the PDCCH of the schedulable of each port is first initialized in scheduling instance General power, so as to determine whether abundance schedulable PDCCH general power to terminal carry out scheduling of resource, shorten judge The time of power overload whether occurs, improves the efficiency of scheduling of resource, in addition, initialize the schedulable of each port PDCCH general power, avoid and scheduling of resource blindly is carried out to terminal, help avoid the phenomenon of emergent power overload；Separately Outside, each port includes each port of cell or each port into sub-carrier, i.e., this goes for LTE and LTE- clearly A systems (as shown in Fig. 8, Fig. 9, Figure 10), improve the practicality of the present invention.
On the basis of above-mentioned each preferred embodiment, the invention provides a kind of preferable acquiring unit 104, such as Fig. 3 institutes Show, the acquiring unit 104 includes：Second acquisition module 1041, for obtaining current terminal to be scheduled according to priority orders CCE-EPRE the and CCE degree of polymerization；Second processing module 1042, communicated with the second acquisition module 1041, for according to acquisition CCE-EPRE the and CCE degree of polymerization calculates the PDCCH of current terminal to be scheduled demand power, wherein, current end to be scheduled The PDCCH at the end demand power=CCE-EPRE × 36 × CCE degree of polymerization.In the present embodiment, to current end to be scheduled Before end carries out scheduling of resource, first calculate the demand power for the PDCCH for obtaining current terminal to be scheduled, in order to each port The PDCCH general power of schedulable be compared, determine whether that the PDCCH of the schedulable of abundance general power is entered to terminal Row scheduling of resource, avoid and scheduling of resource blindly is carried out to terminal, help avoid the phenomenon of emergent power overload；In addition, Terminal is scheduled according to priority orders, is favorably improved the service quality of system.
On the basis of above preferred embodiment, the invention provides a kind of preferable scheduling unit 106, as shown in figure 4, The scheduling unit 106 includes：Distribute module 1061, for pre-allocating current terminal institute to be scheduled for current terminal to be scheduled The PDCCH power resources needed；Judge module 1062, communicated with distribute module 1061, for judging whether to find predistribution The position of PDCCH power resources；Scheduler module 1063, communicated with judge module 1062, for judging not find predistribution PDCCH power resources position when, be not the PDCCH power resources needed for current terminal distribution to be scheduled.In this implementation In example, the PDCCH power resources needed for it first are pre-allocated for current terminal to be scheduled, are finding the PDCCH power of predistribution During the position of resource, the PDCCH power resource allocations of predistribution are being given to current terminal to be scheduled, if not finding predistribution The PDCCH power resources that the position of PDCCH power resources is not then current terminal distribution to be scheduled needed for it, i.e. not to working as Preceding terminal to be scheduled carries out scheduling of resource, avoids the PDCCH power resources needed for directly by current terminal to be scheduled After distributing to current terminal to be scheduled, the phenomenon because causing scheduling of resource failure not finding the position of PDCCH power resources, So as to avoid the waste of the PDCCH of schedulable general power, the accuracy of scheduling of resource is improved.
On the basis of above-mentioned each preferred embodiment, the present invention is improved the dispatching device of above-mentioned resource, such as Fig. 5 Shown, the dispatching device of the resource also includes：First judging unit 108, the PDCCH's of the schedulable for judging initialization is total Whether power is more than zero；Second judging unit 1010, communicate, be used for the first judging unit 108 and Second processing module 1042 When the general power for judging the PDCCH of schedulable of initialization is more than zero, the PDCCH of current terminal to be scheduled need are judged The general power for asking power whether to be not more than the PDCCH of schedulable, otherwise, scheduling of resource is not carried out to current terminal to be scheduled. In the present embodiment, after the PDCCH of schedulable of each port general power is initialized, judge schedulable PDCCH it is total Whether power is more than zero, when the PDCCH of schedulable general power is more than zero, then the PDCCH of current terminal to be scheduled need Ask power whether to be not more than the PDCCH of schedulable general power, and then decide whether to carry out scheduling of resource to terminal, avoid When the PDCCH of schedulable general power is less than or equal to zero, the judgement of scheduling of resource is blindly carried out to terminal, so as to improve The accuracy of scheduling of resource, improve the efficiency of scheduling of resource.
On the basis of above-mentioned each preferred embodiment, the present invention has been done to the dispatching device of above-mentioned resource further to be changed Enter, as shown in fig. 6, the dispatching device of the resource also includes：Updating block 1012, for finding the PDCCH power of predistribution During resource location, after current terminal distribution to be scheduled currently the PDCCH power resources needed for terminal to be scheduled, according to The PDCCH of the PDCCH of the schedulable of initialization general power and the current terminal to be scheduled obtained demand power renewal is just The PDCCH of the schedulable of beginningization general power.In the present embodiment, after successfully scheduling of resource is carried out to terminal, to schedulable PDCCH general power updated in real time, to carry out scheduling of resource to next terminal exactly, be favorably improved source The accuracy of scheduling.
Preferably, the dispatching device of above-mentioned resource can be in MAC (MediaAccess Control, the media access of base station Control) layer realizes its function.
Embodiment 2
On the basis of Fig. 1-6, the invention provides a kind of dispatching method of preferable resource, as shown in fig. 7, the resource Dispatching method include：
S702：Initialize the general power of the physical downlink control channel PDCCH of schedulable respectively in each scheduling instance；
S704：Obtain the PDCCH of current terminal to be scheduled demand power；
S706：Judging the PDCCH of current terminal to be scheduled total work of the demand power no more than the PDCCH of schedulable In the case of rate, scheduling of resource is carried out to current terminal to be scheduled.
In above preferred embodiment, first according to the PDCCH of the schedulable of acquisition general power and current to be scheduled Whether the PDCCH of terminal demand power judges the PDCCH of current terminal to be scheduled demand power no more than schedulable PDCCH general power, when judging to be, scheduling of resource just is carried out to current terminal to be scheduled, i.e. resource is being carried out to terminal Before scheduling, first judged, be not more than the PDCCH of schedulable in the demand power for the PDCCH for meeting current terminal to be scheduled General power condition when, then to terminal carry out scheduling of resource, power overload is prevented and protected in advance, avoids the occurrence of work( The phenomenon of rate overload, solve the degree of accuracy and limit to reducing signal caused by overload power progress peak clipping in correlation technique The PDCCH restricted problem of coverage caused by transmit power on the every RE of PDCCH channels processed, so as to effectively prevent Due to damage of the power overload to radio-frequency unit, reduce the influence that overload power is carried out peak clipping and brought, so as to improve letter Number the degree of accuracy.
On the basis of above-described embodiment, preferably being initialized respectively in each scheduling instance the invention provides one kind can The method of the PDCCH of scheduling general power, specifically, the total of the PDCCH of schedulable should be initialized respectively in each scheduling instance The method of power includes：Obtain the general power Port Power, CRS Power, HI Power and CFI of each port Power, wherein, each port includes each port of cell or each port into sub-carrier；According to each port of acquisition General power PortPower, CRS Power, HI Power and CFI Power determine each port schedulable PDCCH General power, wherein, the PDCCH of the schedulable of each port general power=Port Power-CRS Power-HI Power- CFI Power.In the present embodiment, before scheduling of resource is carried out to terminal, scheduling instance first initialize each port can The PDCCH of scheduling general power, to determine whether that the PDCCH of the schedulable of abundance general power carries out resource tune to terminal Degree, shorten the time for judging whether that power overload occurs, the efficiency of scheduling of resource is improved, in addition, initializing each port Schedulable PDCCH general power, avoid blindly to terminal carry out scheduling of resource, help avoid emergent power overload Phenomenon；In addition, each port includes each port of cell or each port into sub-carrier, i.e., this goes for clearly LTE and lte-a system, improve the practicality of the present invention.
Preferably, in LTE/LTE-A systems, downlink physical control channel of the present invention mainly includes：PCFICH (Physical Control Format Indicator Channel, Physical Control Format Indicator Channel), PHICH (Physical Hybrid ARQ Indicator Channel, Physical HARQ Indicator Channel), PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel), for LTE system, above-mentioned resource of the present invention Dispatching method acts on cell (Cell), and for lte-a system, the present invention is suitable to act on into sub-carrier (Component Carrier, referred to as CC).On the basis of above-mentioned each preferred embodiment, the invention provides the tune of another preferable resource Degree method, as shown in figure 8, for the dispatching method of the resource is described in detail, the present embodiment is applicable but is not limited to following scene：
Cell is maximum to send general power-Cell Power
Port total power value-PortPower
Reference signal port number-PortNumber
PHICH group number-HI Group
PHICH single ports are per RE performance numbers-HI_EPRE
Control channel symbol indicated value-CFI (control format indicator)
PCFICH single ports are per RE performance numbers-CFI_EPRE (control format indicator-Energy Per Resource Element)
Cell reference signals power-CRS_EPRE (Cell Reference Signal-Energy Per Resource Element)
Terminal references signal power-URS_EPRE
Bandwidth of cell-Bandwidth, unit are RB (Resource Block, resource units)
The CCE degree of polymerization-CCE aggregation level (Control Channel Element aggregation level)
Specifically, the dispatching method of above-mentioned resource includes：
S1：(including step S802-S804) obtains cell total power value Cell Power, cell ginseng in each scheduling instance The port number Port Number of signal are examined, in addition it is also necessary to CRS (Cell Reference Signal, cell reference signals), URS user reference signals, PCFICH, PHICH, PDCCH every RE performance numbers CRS_EPRE, URS_EPRE, CFI_EPRE, HI_ EPR, CCE_EPRE, wherein, RS_EPRE values are configured by RRC (Radio Resource Control, RRM) layer； Because 3GPP (3rd Generation partnership project, third generation mobile Partnership Program) agreement does not have Body regulation Port Power, CFI_EPRE, HI_EPRE, CCE_EPRE obtaining value method, the present invention is not also restricted, according to upper State performance number, initial cell/into sub-carrier each port PDCCH initial available total power, computational methods are following (following Formula is linear Value Operations)：
According to the port number (Port Number) of cell configuration, CFI values and CRS performance number calculate control channel institute OFDM symbol CRS take power.
Each the general power of port is：
When single port and two-port configure,
Port Power=CFI × Cell Power/Port Number；
When 4 ports configure, Port Power=CFI × Cell Power/2；
When single port and two-port configure, the power that CRS takes is：
CRS Power=2 × Bandwidth × CRSEPRE；
When 4 ports configure, CRS Power=4 × Bandwidth × CRCEPRE；
Calculating multiple PHICH groups occupancy power isWherein, U is the PHICH groups The number of users of interior multiplexing.G is the group number shared by PHICH.
It is CFI Power=CFI_EPRE × 16 to calculate the power that PCFICH takes；
Initialization single port PDCCH available total power is：
CCE Total Power=Port Power-CRS Power-HI Power-CFI Power, it is preferable that above-mentioned The PDCCH of the schedulable of port general power computational methods are a kind of preferable example, and the present invention is not limited this.
S2：It is single-ended that (including step S806) according to certain priority orders carries out its to each terminal to be scheduled The calculating of PDCCH power needed for mouthful, method are as follows：
DCI Power=CCEEPRE×36×CCEaggregationlevel, it is preferable that the PDCCH demand powers of above-mentioned terminal Computational methods are a kind of preferable example, and the present invention is not limited this.
S3：(including step S808-S820) determines whether to dispatch according to the PDCCH of the schedulable of renewal general power The terminal, method are as follows：
If CCE Total Power >=DCI Power, give the terminal distribution PDCCH resource, and search PDCCH moneys The position in source, if the position of PDCCH resource can not be found, the terminal can not be dispatched, and changed next terminal and continued, no Then, the PDCCH of schedulable general power, CCE Total Power=CCE Total Power-DCI Power are updated；
S4：(including step S822-S824) is finished if user is circulated, or CCE Total Power≤0, then is exited This cell or this dispatched into the PDCCH resource of sub-carrier, flow terminates.
Preferably, below by taking LTE system as an example, as shown in figure 9, so that the dispatching method of resource is described in detail, this is preferred real Example is applied to be applicable but be not limited to following scene：
Cell port number is 2, and bandwidth of cell 100RB, CFI value are 2, and cell port general power is 43dBm, and cell is joined Examine signal power CRS_EPRE=12dBm, current time there are 4 PDCCH channels to adhere to 4 terminals separately to wait to dispatch, priority orders Respectively DCI1, DCI2, DCI3, DCI4, CCE EPRE values are 12dBm, and CCE aggregation degrees are 8, HI_EPRE and CFI_ EPRE is 15dBm.
S1：Initialize the PDCCH of the schedulable of each cell port general power；
Port Power=CFI × Cell Power/Port Number=43dBm=20watt；
CRS Power=2 × Bandwidth × CRSEPRE=35dBm=3.162watt；
CFI Power=CFI_EPRE × 16=27.04dBm=0.506watt；
Each the general power of the schedulable of cell port is：
CCE Total Power=Port Power-CRS Power-HI Power-CFI Power
=20watt-3.162watt-1.514watt-0.506watt=14.818watt；
S2：If CCE Total Power≤0, exits scheduling, otherwise, the according to priority PDCCH of order computing terminal Demand power value；
The PDCCH demand powers of terminal 1 are：
The Power=CCE of DCI 1EPRE×36×CCEaggregationlevel
=12dBm+15.56dB+9.03dB=33.59dBm=4.57w；
S3：Judge whether the Power of CCE Total Power >=DCI 1, it is clear that the formula is set up, then distributes institute for terminal 1 The PDCCH power resources needed, and PDCCH position is searched, if finding PDCCH position, update CCE Total Power The Power=10.248watt of=CCE Total Power-DCI 1, step S4 is performed, if not finding PDCCH position, Terminal 1 is not scheduled, directly performs step S4；
S4：Return to step S2, S3 is calculated and judged to terminal two, it is known that, the Power=4.57watt of DCI 2, more The Power of CCE Total Power >=DCI 2 after new, then be scheduled to terminal 2, if finding PDCCH position, more New CCE Total Power=CCE Total Power-DCI Power=5.678watt, according to priority order so circulation Terminal is calculated and judged, it is known that, terminal three meets conditional relationship formula, so as to can also be dispatched, DCI 4Power =4.57watt the Power of CCE Total Power ＜ DCI 4, is unsatisfactory for conditional relationship formula when performing the judgement of step 3, Therefore, terminal four can not access scheduling, be finished until terminal circulates, or CCE Total Power≤0, then exit scheduling, Flow terminates.In the present embodiment, can when being scheduled to terminal power overload protection pretreatment, can be effectively Preventing or reducing influences caused by peak clipping, ensures the accuracy of signal transmission, meanwhile, do not have to the covering of limitation control channel again Scope.
Preferably, below by taking lte-a system as an example, as shown in Figure 10, so that the dispatching method of resource is described in detail, this is preferably Embodiment is applicable but is not limited to following scene：
2 are each 100RB into the size of sub-carrier (Component Carrrier, referred to as CC) into sub-carrier, Cell port number is 2, and bandwidth of cell 100RB, CFI value is 2, and cell general power is 43dBm, cell reference signals power CRS_EPRE=12dBm, current time have 4 PDCCH channels to adhere to 4 terminals separately to wait to dispatch, and priority orders are respectively DCI1, DCI2, DCI3, DCI4, CCE_EPRE value are 12dBm, and CCE aggregation degrees are 8, HI_EPRE and CFI_EPRE is 15dBm. The main CC for setting above-mentioned 4 UE is CC1, and auxiliary CC is CC2, and this scheduling instance needs the PHICH totally 8 that feeds back, its In, 4 PHICH are on main CC, and 4 PHICH on auxiliary CC, according to the order of auxiliary CC after former head CC adjust by the scheduling for setting PDCCH Degree.
S1：Initialize the PDCCH of the schedulable of each CC ports general power；
Main CC,
Port Power=CFI × Cell Power/Port Number=43dBm=20watt；
CRS Power=2 × Bandwidth × CRSEPRE=35dBm=3.162watt；
CFI Power=CFI_EPRE × 16=27.04dBm=0.506watt；
Each the general power of the schedulable of main CC ports is：
CCE Total Power CC1=Port Power-CRS Power-HI Power-CFI Power
=20watt-3.162watt-1.514watt-0.506watt=14.818watt；
Equally, the general power for obtaining the schedulable of each auxiliary CC ports is CCE Total Power CC2= 14.818watt, it is preferable that the PDCCH of the schedulable of above-mentioned port general power computational methods are that one kind is preferably shown Example, the present invention are not limited this.
S2：Judge whether CCE Total PowerCC1≤0, if CCE Total PowerCC1≤0, exits this CC's Scheduling, otherwise, according to priority PDCCH demand power values of order computing terminal；
The PDCCH demand powers of terminal 1 are
The Power=CCE of DCI 1EPRE×36×CCEaggregationlevel
=12dBm+15.56dB+9.03dB=33.59dBm=4.57watt；Preferably, the PDCCH demands of above-mentioned terminal The computational methods of power are a kind of preferable example, and the present invention is not limited this.
S3：Judge whether the Power of CCE Total PowerCC1 >=DCI 1, it is clear that the formula is set up, then is divided for terminal 1 With required PDCCH power resources, and PDCCH position is searched, if finding PDCCH position, update CCE Total The Power=10.248watt of PowerCC1=CCE Total PowerCC1-DCI 1, step S4 is performed, if not finding PDCCH position, then terminal 1 is not scheduled, directly performs step S4；
S4：Return to step S2, S3 is calculated and judged to terminal two, it is known that, the Power=4.57watt of DCI 2, more The Power of CCE Total Power CC1 >=DCI 2 after new, then be scheduled to terminal 2, if finding PDCCH position, CCE Total Power CC1=CCE Total Power CC1-DCI Power2=5.678watt are then updated, according to priority Order so circulation is calculated and judged to terminal, it is known that, terminal three meets conditional relationship formula, so as to can also be adjusted Degree, now, CCE Total PowerCC1=CCE Total PowerCC1-DCI Power3=1.108watt, DCI 4 The Power of Power=4.57watt, CCE Total PowerCC1 ＜ DCI 4, are unsatisfactory for conditional relationship formula, thus, the terminal Four PDCCH demand powers can not be dispatched in main CC, then be dispatched in auxiliary CC, auxiliary CC CCE Total PowerCC2 ＞ DCI 4 Power, meet conditional relationship formula, then DCI4 is dispatched on auxiliary CC, renewal CCE Total PowerCC2=CCE Total The Power=10.248watt. of PowerCC2-DCI 4, circulation perform step S2, S3 and terminal are calculated and judged, until Terminal circulation finishes, or CCE Total PowerCC2≤0, then exits scheduling, flow terminates.In the present embodiment, can be with The pretreatment of power overload protection when being scheduled to terminal, it effectively can prevent or reduce shadow caused by peak clipping Ring, ensure the accuracy of signal transmission, meanwhile, do not have to the coverage for limiting control channel again.
On the basis of above-mentioned each preferred embodiment, the invention provides a kind of preferable current terminal to be scheduled of acquisition PDCCH demand power method, specifically, the method for the current PDCCH of the terminal to be scheduled demand power of the acquisition Including：CCE-EPRE the and CCE degree of polymerization of current terminal to be scheduled is obtained according to priority orders；According to the CCE- of acquisition EPR the and CCE degree of polymerization calculates the PDCCH of current terminal to be scheduled demand power, wherein, current terminal to be scheduled PDCCH demand power=CCE-EPRE × 36 × CCE the degree of polymerization.In the present embodiment, enter to current terminal to be scheduled Before row scheduling of resource, first calculate the demand power for the PDCCH for obtaining current terminal to be scheduled, in order to each port can The PDCCH of scheduling general power is compared, and determines whether that the PDCCH of the schedulable of abundance general power provides to terminal Source is dispatched, and is avoided and is blindly carried out scheduling of resource to terminal, helps avoid the phenomenon of emergent power overload；In addition, according to Priority orders are scheduled to terminal, are favorably improved the service quality of system.
On the basis of above-mentioned each preferred embodiment, preferably current terminal to be scheduled is entered the invention provides a kind of The method of row scheduling of resource, specifically, the method for carrying out scheduling of resource to current terminal to be scheduled include：Currently to wait to adjust PDCCH power resources needed for the current terminal to be scheduled of terminal predistribution of degree；Judge whether to find the PDCCH work(of predistribution The position of rate resource；If it is not, it is not then the PDCCH power resources needed for current terminal distribution to be scheduled.In the present embodiment, The PDCCH power resources needed for it first are pre-allocated for current terminal to be scheduled, are finding the PDCCH power resources of predistribution During position, the PDCCH power resource allocations of predistribution are being given to current terminal to be scheduled, if not finding the PDCCH of predistribution The PDCCH power resources that the position of power resource is not then current terminal distribution to be scheduled needed for it, i.e. not to currently treating The terminal of scheduling carries out scheduling of resource, avoids the PDCCH power resource allocations needed for directly by current terminal to be scheduled After current terminal to be scheduled, the phenomenon because causing scheduling of resource failure not finding the position of PDCCH power resources, so as to The waste of the PDCCH of schedulable general power is avoided, improves the accuracy of scheduling of resource.
On the basis of above-mentioned each preferred embodiment, the present invention is improved the dispatching method of above-mentioned resource, specifically Ground, the dispatching method of the resource also include：It is not more than schedulable in the demand power for the PDCCH for judging current terminal to be scheduled PDCCH general power before, judge initialization schedulable PDCCH general power whether be more than zero；If judge initial The PDCCH of the schedulable of change general power is more than zero, then whether not to judge the PDCCH demand power of current terminal to be scheduled More than the PDCCH of schedulable general power, otherwise, scheduling of resource is not carried out to terminal.In the present embodiment, it is each in initialization After the PDCCH of the schedulable of port general power, judge whether the PDCCH of schedulable general power is more than zero, in schedulable When PDCCH general power is more than zero, then whether the PDCCH of current terminal to be scheduled demand power is not more than schedulable PDCCH general power, and then decide whether to carry out scheduling of resource to terminal, the general power avoided in the PDCCH of schedulable is small When zero, the judgement of scheduling of resource is blindly carried out to terminal, so as to improve the accuracy of scheduling of resource, is improved The efficiency of scheduling of resource.
On the basis of above-mentioned each preferred embodiment, the present invention has been done to the dispatching method of above-mentioned resource further to be changed Enter, specifically, the dispatching method of the resource also includes：After carrying out scheduling of resource to current terminal to be scheduled, if finding pre- The position of the PDCCH power resources of distribution, it is the current terminal distribution to be scheduled currently PDCCH work(needed for terminal to be scheduled After rate resource, according to the PDCCH's of the PDCCH of the schedulable of initialization general power and the current terminal to be scheduled obtained The PDCCH of the schedulable of demand power renewal initialization general power.In the present embodiment, resource tune successfully is being carried out to terminal After degree, the PDCCH of schedulable general power is updated in real time, to carry out resource tune to next terminal exactly Degree, it is favorably improved the accuracy of source scheduling.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (12)

  1. A kind of 1. dispatching method of resource, it is characterised in that including：
    Initialize the general power of the physical downlink control channel PDCCH of schedulable respectively in each scheduling instance；
    Obtain the PDCCH of current terminal to be scheduled demand power；
    Judging the PDCCH of the current terminal to be scheduled total work of the demand power no more than the PDCCH of the schedulable In the case of rate, scheduling of resource is carried out to the current terminal to be scheduled.
  2. 2. according to the method for claim 1, it is characterised in that initialize schedulable respectively in each scheduling instance The step of PDCCH general power, includes：
    Obtain general power Port Power, cell reference signals power CRS Power, Physical HARQ Indicator Channel of each port Power HI Power and control channel symbol indicated value power CFI Power, wherein, each port includes the every of cell Individual port or each port into sub-carrier；
    Determined according to Port Power, CRS Power, HI Power and the CFI Power of each port of acquisition every The PDCCH of the schedulable of individual port general power, wherein, the PDCCH of the schedulable of each port general power=Port Power-CRS Power-HI Power-CFI Power。
  3. 3. according to the method for claim 1, it is characterised in that obtain the PDCCH of current terminal to be scheduled demand work( The step of rate, includes：
    Control channel the unit power CCE-EPRE and CCE that the current terminal to be scheduled is obtained according to priority orders polymerize Degree；
    The PDCCH of the current terminal to be scheduled demand power is calculated according to CCE-EPRE the and CCE degree of polymerization of acquisition, its In, the PDCCH of the current terminal to be scheduled demand power=CCE-EPRE × 36 × CCE degree of polymerization.
  4. 4. according to the method for claim 1, it is characterised in that judging the PDCCH's of the current terminal to be scheduled Before general power of the demand power no more than the PDCCH of the schedulable, methods described also includes：
    Judge whether the PDCCH of the schedulable of initialization general power is more than zero；
    If judging, the PDCCH of the schedulable of initialization general power is more than zero, judges the current end to be scheduled Whether the PDCCH at end demand power is not more than the PDCCH of schedulable general power, otherwise, the terminal is not carried out Scheduling of resource.
  5. 5. according to the method for claim 4, it is characterised in that scheduling of resource is carried out to the current terminal to be scheduled Step includes：
    For the PDCCH power resources needed for the current terminal predistribution current terminal to be scheduled to be scheduled；
    Judge whether to find the position of the PDCCH power resources of the predistribution；
    If it is not, it is not then the PDCCH power resources needed for the current terminal distribution to be scheduled.
  6. 6. according to the method for claim 5, it is characterised in that the current terminal to be scheduled is carried out scheduling of resource it Afterwards, in addition to：
    It is current described in the current terminal distribution to be scheduled if finding the position of the PDCCH power resources of the predistribution After PDCCH power resources needed for terminal to be scheduled, according to the PDCCH of the schedulable of initialization general power and institute State the PDCCH's of the schedulable of the PDCCH of the current terminal to be scheduled of the acquisition demand power renewal initialization General power.
  7. A kind of 7. dispatching device of resource, it is characterised in that including：
    Processing unit, the general power of the PDCCH for initializing schedulable respectively in each scheduling instance；
    Acquiring unit, the demand power of the PDCCH for obtaining current terminal to be scheduled；
    Scheduling unit, for being not more than the schedulable in the demand power for the PDCCH for judging the current terminal to be scheduled PDCCH general power in the case of, scheduling of resource is carried out to the current terminal to be scheduled.
  8. 8. device according to claim 7, it is characterised in that the processing unit includes：
    First acquisition module, for obtaining the general power Port Power, CRS Power, HI Power and CFI of each port Power, wherein, each port includes each port of cell or each port into sub-carrier；
    First processing module, for each port according to acquisition Port Power, CRS Power, HI Power with And CFI Power determine the PDCCH of the schedulable of each port general power, wherein, the schedulable of each port PDCCH general power=Port Power-CRS Power-HI Power-CFI Power.
  9. 9. device according to claim 7, it is characterised in that the acquiring unit includes：
    Second acquisition module, CCE-EPRE and CCE for obtaining the current terminal to be scheduled according to priority orders gather It is right；
    Second processing module, for calculating the current terminal to be scheduled according to CCE-EPRE the and CCE degree of polymerization of acquisition PDCCH demand power, wherein, the PDCCH of the current terminal to be scheduled demand power=CCE-EPRE × 36 × CCE The degree of polymerization.
  10. 10. device according to claim 7, it is characterised in that described device also includes：
    Whether the first judging unit, the PDCCH of the schedulable for judging initialization general power are more than zero；
    Second judging unit, for when judging the PDCCH of schedulable of initialization general power more than zero, judging institute State the PDCCH of current terminal to be scheduled demand power whether no more than the schedulable PDCCH general power, otherwise, Scheduling of resource is not carried out to the current terminal to be scheduled.
  11. 11. device according to claim 7, it is characterised in that the scheduling unit includes：
    Distribute module, for pre-allocating the PDCCH needed for the current terminal to be scheduled for the current terminal to be scheduled Power resource；
    Judge module, the position of the PDCCH power resources for judging whether to find the predistribution；
    Scheduler module, for when judging not find the position of PDCCH power resources of the predistribution, not to be described current PDCCH power resources needed for terminal distribution to be scheduled.
  12. 12. device according to claim 11, it is characterised in that described device also includes：
    Updating block, for when finding the PDCCH power resource positions of the predistribution, being the current terminal to be scheduled Distribute after the PDCCH power resources needed for the current terminal to be scheduled, according to the PDCCH of the schedulable of the initialization General power and the PDCCH demand power of the current terminal to be scheduled of the acquisition update the adjustable of the initialization The PDCCH of degree general power.
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