CN103096484B - Terminal scheduling method and apparatus - Google Patents

Terminal scheduling method and apparatus Download PDF

Info

Publication number
CN103096484B
CN103096484B CN201310046190.6A CN201310046190A CN103096484B CN 103096484 B CN103096484 B CN 103096484B CN 201310046190 A CN201310046190 A CN 201310046190A CN 103096484 B CN103096484 B CN 103096484B
Authority
CN
China
Prior art keywords
terminal
pdcch
value
polymerization grade
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201310046190.6A
Other languages
Chinese (zh)
Other versions
CN103096484A (en
Inventor
孙军帅
李裕国
李克
李远军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Datang Mobile Communications Equipment Co Ltd
Original Assignee
Datang Mobile Communications Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Datang Mobile Communications Equipment Co Ltd filed Critical Datang Mobile Communications Equipment Co Ltd
Priority to CN201310046190.6A priority Critical patent/CN103096484B/en
Publication of CN103096484A publication Critical patent/CN103096484A/en
Application granted granted Critical
Publication of CN103096484B publication Critical patent/CN103096484B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a kind of terminal scheduling method and apparatus, relate to wireless communication technology field, for solving the problem of the reception interference level of the physical downlink control channel PDCCH how controlling this community.In the present invention, terminal to be scheduled in base station selection current area; Obtain the quality parameter value of eating dishes without rice or wine of the terminal chosen, adjust the PDCCH polymerization grade of this terminal according to the quality parameter value of eating dishes without rice or wine got; According to the PDCCH polymerization grade of each terminal after adjustment, be this terminal distribution PDCCH resource, and send the dispatch carrying respective resources assignment information to this terminal.Visible, in this programme, base station by the PDCCH polymerization grade of adjustment terminal, can adjust the reception interference level of the PDCCH of current area, reaches the object of the reception interference level of the PDCCH controlling this community.

Description

Terminal scheduling method and apparatus
The divisional application that this case is application number is 201110008650.7, the applying date is on 01 14th, 2011, denomination of invention is " terminal scheduling method and apparatus ".
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of terminal scheduling method and apparatus.
Background technology
The downlink transfer of Long Term Evolution (LTE) system have employed OFDM (OrthogonalFrequency Division Multiplexing, OFDM) technology, the problem of intra-cell interference is resolved substantially, but presence of intercell interference (Inter-Cell Interference, ICI) may be even more serious than code division multiple access (Code DivisionMultiple Access, CDMA) system.
Physical Downlink Control Channel (PDCCH), as control channel, carries the various control informations of base station (Evolved NodeB, eNB) up-downgoing dispatched users, and the quality that user receives PDCCH directly determines the throughput of user and network.If but ICI can not get rational control in the lte networks, the quality of reception of PDCCH will be had a strong impact on.
Specify in the 36.423R940 agreement of 3G (Third Generation) Moblie standardization body (3GPP), by PDCCH interference level (the PDCCH Interference Impact) parameter between the mutual neighbor cell of X2 interface between eNB, what all neighbor cells were known by this parameter in each community is disturbed level.Such as, the PDCCH Interference Impact parameter of this community is sent to community A by community B, community A determines the interference level of the adjacent cell that community B is subject to according to this parameter, if interference level is larger, the OFDM symbol number that then can be taken by the PDCCH reducing community A, reduce the interference level of community A to community B, if interference level is less, then the OFDM symbol number that the PDCCH that can suitably increase community A takies.
PDCCH Interference Impact parameter be described below table 1:
Table 1
Realizing in process of the present invention, inventor finds to there is following technical problem in prior art:
Existing protocol gives the approach collecting adjacent cell interference level parameter, but the information that this community only relies on PDCCH Interference Impact parameter to carry cannot control the interference level of this community PDCCH accurately.Because what PDCCH Interference Impact parameter was carried is the OFDM symbol number information that adjacent cell PDCCH takies, the OFDM symbol number that this community takies according to adjacent cell PDCCH, judge the interference level that this community produces adjacent cell, and can in order to reduce the interference level of adjacent cell and the OFDM symbol number that takies of the PDCCH reducing this community, but how this community controls the reception interference level of the PDCCH of either own cell, does not also have concrete implementation at present.
Summary of the invention
The embodiment of the present invention provides a kind of terminal scheduling method and apparatus, for solving the problem of the reception interference level of the PDCCH how controlling this community.
A kind of terminal scheduling method, the method comprises:
The physical downlink control channel PDCCH interference level parameter value of the adjacent cell of acquisition current area, base station;
Base station, according to getting PDCCH interference level parameter value, adjusts the dispatch terminal number of current area;
Terminal scheduling, according to the dispatch terminal number after adjustment, is carried out in current area in base station.
A kind of terminal scheduling equipment, this equipment comprises:
Interference level parameter acquiring unit, for obtaining the physical downlink control channel PDCCH interference level parameter value of the adjacent cell of current area;
Dispatch terminal number adjustment unit, for getting PDCCH interference level parameter value, the dispatch terminal number of adjustment current area;
Terminal scheduling unit, for according to the dispatch terminal number after adjustment, carries out terminal scheduling in current area.
In this programme, the PDCCH interference level parameter value of the adjacent cell of acquisition current area, base station, according to getting PDCCH interference level parameter value, the dispatch terminal number of adjustment current area; And according to the dispatch terminal number after adjustment, carry out terminal scheduling in current area.Visible, in this programme, base station by the dispatch terminal number of adjustment current area, can adjust the reception interference level of the PDCCH of current area, reaches the large object of reception interference level of the PDCCH of this control either own cell, community.
The embodiment of the present invention provides another kind of terminal scheduling method and apparatus, for solving the problem of the reception interference level of the PDCCH how controlling this community.
A kind of terminal scheduling method, the method comprises:
Terminal to be scheduled in base station selection current area;
Base station obtains the quality parameter value of eating dishes without rice or wine of the terminal chosen, and adjusts the physical downlink control channel PDCCH polymerization grade of this terminal according to the quality parameter value of eating dishes without rice or wine got;
Base station, according to the PDCCH polymerization grade of each terminal after adjustment, is this terminal distribution PDCCH resource, and sends the dispatch carrying respective resources assignment information to this terminal.
A kind of terminal scheduling equipment, this equipment comprises:
Terminal chooses unit, for choosing terminal to be scheduled in current area;
Polymerization grade adjustment unit, for obtaining the quality parameter value of eating dishes without rice or wine of the terminal chosen, adjusts the physical downlink control channel PDCCH polymerization grade of this terminal according to the quality parameter value of eating dishes without rice or wine got;
Terminal scheduling unit, for the PDCCH polymerization grade according to each terminal after adjustment, is this terminal distribution PDCCH resource, and sends the dispatch carrying respective resources assignment information to this terminal.
In this programme, terminal to be scheduled in base station selection current area; Obtain the quality parameter value of eating dishes without rice or wine of the terminal chosen, adjust the PDCCH polymerization grade of this terminal according to the quality parameter value of eating dishes without rice or wine got; According to the PDCCH polymerization grade of each terminal after adjustment, be this terminal distribution PDCCH resource, and send the dispatch carrying respective resources assignment information to this terminal.Visible, in this programme, base station by the PDCCH polymerization grade of adjustment terminal, can adjust the reception interference level of the PDCCH of current area, reaches the large object of reception interference level of the PDCCH of this control either own cell, community.
Accompanying drawing explanation
The method flow schematic diagram that Fig. 1 provides for the embodiment of the present invention;
The other method schematic flow sheet that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the schematic flow sheet of the embodiment of the present invention;
The device structure schematic diagram that Fig. 4 provides for the embodiment of the present invention;
Another device structure schematic diagram that Fig. 5 provides for the embodiment of the present invention.
Embodiment
In order to control the reception interference level of the PDCCH of this community, embodiments provide terminal scheduling method, in this method, base station, when arriving dispatching cycle, obtains the mass parameter of eating dishes without rice or wine of terminal in the PDCCH interference level parameter of adjacent cell of current area and/or current area; According to eat dishes without rice or wine mass parameter and/or the PDCCH interference level parameter that get, the terminal of scheduling current area.
See Fig. 1, a kind of terminal scheduling method that the embodiment of the present invention provides, specifically comprises the following steps:
Step 10: the PDCCH interference level parameter value of the adjacent cell of acquisition current area, base station;
Step 11: base station, according to getting PDCCH interference level parameter value, adjusts the dispatch terminal number of current area;
Step 12: terminal scheduling, according to the dispatch terminal number after adjustment, is carried out in current area in base station.
The specific implementation of step 11 can adopt the following two kinds mode:
The first, if get the PDCCH interference level parameter value of an adjacent cell, then base station is when this PDCCH interference level parameter value is higher than the PDCCH interference level parameter upper limit value preset, and is turned down by the dispatch terminal number of current area; When this PDCCH interference level parameter value is lower than the PDCCH interference level parameter lower limit value preset, the dispatch terminal number of current area is tuned up;
The second, if get the PDCCH interference level parameter value of multiple adjacent cell, then the PDCCH interference level parameter value of the plurality of adjacent cell is carried out matching, obtain adjacent cell comprehensive PDCCH interference level parameter value, and when this adjacent cell comprehensive PDCCH interference level parameter value is higher than described PDCCH interference level parameter upper limit value, the dispatch terminal number of current area is turned down; When this adjacent cell comprehensive PDCCH interference level parameter value is lower than described PDCCH interference level parameter lower limit value, the dispatch terminal number of current area is tuned up.
Here, PDCCH interference level parameter upper limit value and PDCCH interference level parameter lower limit value be greater than 0 integer, PDCCH interference level parameter upper limit value can be greater than PDCCH interference level parameter lower limit value, preferably, PDCCH interference level parameter upper limit value can be 2, and PDCCH interference level parameter upper limit value can be 1.
Preferably, before the dispatch terminal number of current area is turned down, first base station can judge whether dispatching cycle (TTI) number is greater than the tolerance window upper limit value preset, described TTI number be base station before current TTI, determine to need total number of the TTI turned down by the dispatch terminal number of current area; The dispatch terminal number of current area, after judging that TTI number is greater than described tolerance window upper limit value, is turned down by base station, otherwise, the dispatch terminal number of current area is not adjusted.
Preferably, before being tuned up by the dispatch terminal number of current area, first base station can judge whether TTI number is greater than the tolerance lower window edge value preset; Described TTI number be base station before current TTI, determine to need total number of the TTI tuned up by the dispatch terminal number of current area; The dispatch terminal number of current area, after judging that TTI number is greater than described tolerance lower window edge value, tunes up by base station, otherwise, the dispatch terminal number of current area is not adjusted.
Here, tolerance window upper limit value and tolerance lower window edge value be greater than 0 integer, tolerance window upper limit value can be greater than tolerance lower window edge value, preferably, tolerance window upper limit value and tolerance lower window edge value can in (0,9) value.
Concrete, base station can be turned down according to the dispatch terminal number of following formula by current area:
Wherein, Max_UE_Num_TTI is the dispatch terminal number after adjustment, Max_UE_Num_TTI 0for adjustment before dispatch terminal number, w be greater than 0 and be less than 1 regulation coefficient; System_UE_Num_TTI is the terminal number of access current area.
Base station can tune up according to the dispatch terminal number of following formula by current area:
Wherein, Max_UE_Num_TTI is the dispatch terminal number after adjustment, Max_UE_Num_TTI 0for adjustment before dispatch terminal number, w be greater than 0 and be less than 1 regulation coefficient, System_UE_Num_TTI be access current area terminal number.
Here, the initial value of dispatch terminal number is System_UE_Num_TTI.W specifically can get percentage.
Certainly; the method of the dispatch terminal number of adjustment current area, base station is not limited to above-mentioned two formula; any scheme that the dispatch terminal number of current area is tuned up or turned down, all in protection scope of the present invention, only need ensure that the dispatch terminal number after adjusting is not less than 0.
The PDCCH interference level parameter value of the plurality of adjacent cell can be carried out matching according to following formula by base station:
Wherein, PII neighborfor the adjacent cell obtained after matching comprehensive PDCCH interference level parameter value; k ifor be greater than 0 and be less than 1 fitting coefficient, and pII ibe the PDCCH interference level parameter value of i-th adjacent cell, n is the sum of the adjacent cell of current area, and i is value in 1 to n.
Certainly, the PDCCH interference level parameter value of multiple adjacent cell is carried out the scheme of matching all in protection scope of the present invention by any other.
The specific implementation of step 12 can be as follows:
Terminal to be scheduled in current area is chosen according to described dispatch terminal number in base station;
Base station, according to the quality parameter value of eating dishes without rice or wine of the terminal chosen, adjusts the PDCCH polymerization grade of this terminal;
Base station, according to the PDCCH polymerization grade of the terminal after adjustment, is this terminal distribution PDCCH resource, and sends the dispatch carrying respective resources assignment information to this terminal.
Concrete, when described quality parameter value of eating dishes without rice or wine comprises Block Error Rate (BLER) value of Physical Downlink Shared Channel (PDSCH), if the BLER value of the terminal chosen is higher than the BLER higher limit preset, then the PDCCH polymerization grade of this terminal is heightened by base station; If the BLER value of the terminal chosen is lower than the BLER lower limit preset, then the PDCCH polymerization grade of this terminal is turned down by base station.
When described quality parameter value of eating dishes without rice or wine comprises BLER value and channel quality instruction (CQI) value of PDSCH, if the spectrum efficiency of the BLER value of the terminal chosen higher than the BLER higher limit preset and indicated by the CQI value of this terminal feedback is lower than the spectrum efficiency lower limit preset, then the PDCCH polymerization grade of this terminal is heightened by base station; If the spectrum efficiency of the BLER value of the terminal chosen lower than the BLER lower limit preset and indicated by the CQI value of this terminal feedback is higher than the spectrum efficiency higher limit preset, then the PDCCH polymerization grade of this terminal is turned down by base station.
When described quality parameter value of eating dishes without rice or wine comprises CQI value, if the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is lower than the spectrum efficiency lower limit preset, then the PDCCH polymerization grade of this terminal is heightened by base station; If the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is higher than the spectrum efficiency higher limit preset, then the PDCCH polymerization grade of this terminal is turned down by base station.
Here, BLER higher limit and BLER lower limit are the numerical value being greater than 0, being less than 1, and BLER higher limit can be greater than BLER lower limit, and preferably, BLER higher limit and BLER lower limit can in (1%, 10%) middle values.Spectrum efficiency lower limit and spectrum efficiency lower limit be greater than 0 numerical value, spectrum efficiency higher limit can be greater than spectrum efficiency lower limit.
When the PDCCH polymerization grade of this terminal being turned down in base station, specifically PDCCH polymerization grade current for terminal can be turned down a step-length, such as PDCCH polymerization grade 8 current for terminal is adjusted to 4, PDCCH polymerization grade 4 current for terminal is adjusted to 2, PDCCH polymerization grade 2 current for terminal is adjusted to 1, when the PDCCH polymerization grade that terminal is current is 1, do not adjust.When the PDCCH polymerization grade of this terminal being heightened in base station, specifically PDCCH polymerization grade current for terminal can be heightened a step-length, such as PDCCH polymerization grade 1 current for terminal is adjusted to 2, PDCCH polymerization grade 2 current for terminal is adjusted to 4, PDCCH polymerization grade 4 current for terminal is adjusted to 8, when the PDCCH polymerization grade that terminal is current is 8, does not adjust, and do not dispatch this terminal.
Preferably, after the PDCCH polymerization grade of each terminal chosen base station adjustment, base station can also according to the PDCCH polymerization grade of each terminal after adjustment, determine the PDCCH interference level parameter value of current area, and the PDCCH interference level parameter value determined is sent to the adjacent cell base station of current area.
Concrete, the PDCCH interference level parameter value of current area according to following formula, can be determined in base station according to the PDCCH polymerization grade of each terminal after adjustment:
Wherein, PII localfor the PDCCH interference level parameter value of current area determined, k ifor be greater than 0 and be less than 1 fitting coefficient, and cCE ueifor the PDCCH polymerization grade of i-th terminal after adjustment, m is the sum treating dispatch terminal chosen, and i is value in 1 to m.
Certainly, according to the PDCCH polymerization grade of each terminal after adjustment, any other determines that the scheme of the PDCCH interference level parameter value of current area is all in protection scope of the present invention.
See Fig. 2, the embodiment of the present invention provides another kind of terminal scheduling method, specifically comprises the following steps:
Step 20: terminal to be scheduled in base station selection current area; Here, the terminal of access current area can be chosen as terminal to be scheduled in base station;
Step 21: base station obtains the quality parameter value of eating dishes without rice or wine of the terminal chosen, adjusts the PDCCH polymerization grade of this terminal according to the quality parameter value of eating dishes without rice or wine got;
Step 22: base station, according to the PDCCH polymerization grade of each terminal after adjustment, is this terminal distribution PDCCH resource, and the dispatch carrying respective resources assignment information is sent to this terminal.
The specific implementation of step 21 can adopt following three kinds of modes:
The first, when described quality parameter value of eating dishes without rice or wine comprises the block error rate BLER value of PDSCH, if the BLER value of the terminal chosen is higher than the BLER higher limit preset, then the PDCCH polymerization grade of this terminal is heightened by base station; If the BLER value of the terminal chosen is lower than the BLER lower limit preset, then the PDCCH polymerization grade of this terminal is turned down by base station.
The second, when described quality parameter value of eating dishes without rice or wine comprises BLER value and the CQI value of PDSCH, if the spectrum efficiency of the BLER value of the terminal chosen higher than the BLER higher limit preset and indicated by the CQI value of this terminal feedback is lower than the spectrum efficiency lower limit preset, then the PDCCH polymerization grade of this terminal is heightened by base station; If the spectrum efficiency of the BLER value of the terminal chosen lower than the BLER lower limit preset and indicated by the CQI value of this terminal feedback is higher than the spectrum efficiency higher limit preset, then the PDCCH polymerization grade of this terminal is turned down by base station.
The third, when described quality parameter value of eating dishes without rice or wine comprises CQI value, if the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is lower than the spectrum efficiency lower limit preset, then the PDCCH polymerization grade of this terminal is heightened by base station; If the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is higher than the spectrum efficiency higher limit preset, then the PDCCH polymerization grade of this terminal is turned down by base station.
Preferably, after the PDCCH polymerization grade of each terminal chosen base station adjustment, base station can also according to the PDCCH polymerization grade of each terminal after adjustment, determine the PDCCH interference level parameter value of current area, and the PDCCH interference level parameter value determined is sent to the adjacent cell base station of current area.
Concrete, the PDCCH interference level parameter value of current area according to following formula, can be determined in base station according to the PDCCH polymerization grade of each terminal after adjustment:
Wherein, PII localfor the PDCCH interference level parameter value of current area determined, k ifor be greater than 0 and be less than 1 fitting coefficient, and cCE ueifor the PDCCH polymerization grade of i-th terminal after adjustment, m is the sum treating dispatch terminal chosen, and i is value in 1 to m.
Below the present invention is specifically described:
The solution of the present invention is by the quality of eating dishes without rice or wine of this community of monitoring, and in conjunction with the PDCCHInterference Impact information that adjacent cell is fed back, the PDCCHInterference Impact carrying out this community user interference level control Bing Jiangzhe community feeds back to adjacent cell.
The invention provides a kind of PDCCH channel with robustness in LTE system and receive interference level auto-adaptive control scheme, specific as follows:
After each dispatching cycle starts, the PDCCH interference level of eat dishes without rice or wine quality and the adjacent cell of eNB synthetic user, dispatches user.The parameters such as shown in Figure 3, medium education (MAC) layer of eNB collects the PDCCH interference level parameter of adjacent cell and the mass parameter of eating dishes without rice or wine of each dispatch terminal, the CQI that BLER, UE that the mass parameter of eating dishes without rice or wine of terminal generally comprises PDSCH report; ENB, according to the information collected, selects schedulable terminal and the PDCCH resource that can be terminal distribution, and carries out Resourse Distribute; Send dispatch by eating dishes without rice or wine to the terminal of scheduling, and send PDCCH interference level (the PDCCH Interference Impact) parameter of this community to adjacent cell.
Determine that a kind of algorithm of terminal number and the PDCCH symbolic number of dispatching is as follows according to eat dishes without rice or wine mass parameter and PDCCH interference level parameter:
First, the input parameter of this algorithm use is as follows:
System_UE_Num_TTI: each TTI schedulable total number of terminals accessed.
Max_UE_Num_TTI: the maximum number of terminals of each TTI scheduling; According to the PDCCH interference level of adjacent cell, adjust the number of terminals of the maximum scheduling of this TTI.
W: the coefficient that terminal number reduces or increases is percentage.
UeNum_Down_Window: reduce the window threshold value needing the terminal number dispatched in TTI, unit is scheduling TTI.
UeNum_Up_Window: increase the window threshold value needing the terminal number dispatched in TTI, unit is scheduling TTI.
PII_Up_Threshold: according to adjacent cell PDCCH Interference Impact parameter, raises the threshold value of terminal number.
PII_Down_Threshold: according to adjacent cell PDCCH Interference Impact parameter, lowers the threshold value of terminal number.
BLER_Up_Threshold: need the threshold value improving terminal PDCCH polymerization grade according to quality of eating dishes without rice or wine.
BLER_Down_Threshold: need the threshold value reducing terminal PDCCH polymerization grade according to quality of eating dishes without rice or wine.
EFF_Up_Threshold: need the threshold value reducing terminal PDCCH polymerization grade according to quality of eating dishes without rice or wine.
EFF_down_Threshold: need the threshold value improving terminal PDCCH polymerization grade according to quality of eating dishes without rice or wine.
Algorithm steps is as follows:
Step 1, obtain the PDCCH Interference Impact(PII of all adjacent cells) match value of parameter.
After this community receives the PII value that each adjacent cell reports, pass through function f pii(PII 1... .PII n) carry out matching, obtain the comprehensive PII value PII of all adjacent cells neighbor, wherein PII ibe the PII value of i-th adjacent cell, { 1,2 ..n}, n are the sum of all adjacent cells of this community to i ∈.
Wherein, Σ i = 0 n k i = 1 ;
Above-mentioned formula is the fit approach of a kind of weighted fitting wherein, by choosing different k values, can adjust the weight of the PII value of different adjacent cell.
Step 2, according to the PDCCH Interference Impact parameter of adjacent cell, the number of terminals that this TTI dispatches to be adjusted.
If PII neighigher than PII_Up_Thresh, and TTI number is greater than tolerance window UeNum_Up_Window, then the UE number of this TTI scheduling will be reduced to:
If PII neighlower than and TTI number is greater than tolerance window UeNum_Down_Window, then the UE number of this TTI scheduling will increase to:
Other all situations, do not change terminal number;
Step 3, mass parameter of eating dishes without rice or wine according to terminal, adjust the PDCCH polymerization grade (CCE) of terminal:
If the BLER value of terminal is higher than BLER_Up_Threshold, and the spectrum efficiency indicated by the CQI value of terminal feedback is lower than EFF_down_Threshold, then improve the polymerization grade of the PDCCH of terminal;
If the BLER value of terminal is lower than BLER_Down_Threshold, and the spectrum efficiency indicated by the CQI value of terminal feedback is higher than EFF_Up_Threshold, then reduce the polymerization grade of the PDCCH of terminal;
Other all situations, do not revise the PDCCH polymerization grade of terminal;
After the PDCCH polymerization grade of each terminal to be scheduled is determined, just can determine according to the PDCCH polymerization grade of each terminal to be scheduled the OFDM symbol number that the PDCCH of current area takies.
Step 4, calculate the PII of this community, and circular is to all neighbor cells:
Note PII localfor this community PDCCH interference level parameter, then
PII local＝f(CCE ue1，CCE ue2,....CCE uem)――――
By above-mentioned formula, calculate PII according to the CCE number that each UE in this community takies local, as circular to the PDCCH Interference Impact parameter of all adjacent cells.
Above-mentioned handling process is controlled in real time by eNB.
See Fig. 4, the embodiment of the present invention also provides a kind of terminal scheduling equipment, and this equipment comprises:
Interference level parameter acquiring unit 40, for obtaining the physical downlink control channel PDCCH interference level parameter value of the adjacent cell of current area;
Dispatch terminal number adjustment unit 41, for getting PDCCH interference level parameter value, the dispatch terminal number of adjustment current area;
Terminal scheduling unit 42, for according to the dispatch terminal number after adjustment, carries out terminal scheduling in current area.
Described dispatch terminal number adjustment unit 41 for:
If get the PDCCH interference level parameter value of an adjacent cell, then, when this PDCCH interference level parameter value is higher than the PDCCH interference level parameter upper limit value preset, the dispatch terminal number of current area is turned down; When this PDCCH interference level parameter value is lower than the PDCCH interference level parameter lower limit value preset, the dispatch terminal number of current area is tuned up; Or,
If get the PDCCH interference level parameter value of multiple adjacent cell, then the PDCCH interference level parameter value of the plurality of adjacent cell is carried out matching, obtain adjacent cell comprehensive PDCCH interference level parameter value, and when this adjacent cell comprehensive PDCCH interference level parameter value is higher than described PDCCH interference level parameter upper limit value, the dispatch terminal number of current area is turned down; When this adjacent cell comprehensive PDCCH interference level parameter value is lower than described PDCCH interference level parameter lower limit value, the dispatch terminal number of current area is tuned up.
Described dispatch terminal number adjustment unit 41 also for:
Judge dispatching cycle, whether TTI number was greater than the tolerance window upper limit value preset, described TTI number be base station before current TTI, determine to need total number of the TTI turned down by the dispatch terminal number of current area; When being judged as YES, the dispatch terminal number of current area is turned down.
Described dispatch terminal number adjustment unit 41 also for:
Judge whether TTI number is greater than the tolerance lower window edge value preset; Described TTI number be base station before current TTI, determine to need total number of the TTI tuned up by the dispatch terminal number of current area; When being judged as YES, the dispatch terminal number of current area is tuned up.
Described dispatch terminal number adjustment unit 41 for: turn down according to the dispatch terminal number of following formula by current area:
Wherein, Max_UE_Num_TTI is the dispatch terminal number after adjustment, Max_UE_Num_TTI 0for adjustment before dispatch terminal number, w be greater than 0 and be less than 1 regulation coefficient; System_UE_Num_TTI is the terminal number of access current area.
Described dispatch terminal number adjustment unit 41 for: tune up according to the dispatch terminal number of following formula by current area:
Wherein, Max_UE_Num_TTI is the dispatch terminal number after adjustment, Max_UE_Num_TTI 0for adjustment before dispatch terminal number, w be greater than 0 and be less than 1 regulation coefficient, System_UE_Num_TTI be access current area terminal number.
Described dispatch terminal number adjustment unit 41 for: according to following formula, the PDCCH interference level parameter value of the plurality of adjacent cell is carried out matching:
Wherein, PII neighborfor the adjacent cell obtained after matching comprehensive PDCCH interference level parameter value; k ifor be greater than 0 and be less than 1 fitting coefficient, and pII ibe the PDCCH interference level parameter value of i-th adjacent cell, n is the sum of the adjacent cell of current area, and i is value in 1 to n.
Described terminal scheduling unit 42 for:
Terminal to be scheduled in current area is chosen according to described dispatch terminal number;
According to the quality parameter value of eating dishes without rice or wine of the terminal chosen, adjust the PDCCH polymerization grade of this terminal;
According to the PDCCH polymerization grade of the terminal after adjustment, be this terminal distribution PDCCH resource, and send the dispatch carrying respective resources assignment information to this terminal.
Described terminal scheduling unit 42 for:
If the BLER value of the terminal chosen is higher than the BLER higher limit preset, then the PDCCH polymerization grade of this terminal is heightened;
If the BLER value of the terminal chosen is lower than the BLER lower limit preset, then the PDCCH polymerization grade of this terminal is turned down.
Described terminal scheduling unit 42 for:
If the PDCCH polymerization grade of this terminal lower than the spectrum efficiency lower limit preset, is then heightened by the spectrum efficiency of the BLER value of the terminal chosen higher than the BLER higher limit preset and indicated by the CQI value of this terminal feedback;
If the PDCCH polymerization grade of this terminal higher than the spectrum efficiency higher limit preset, is then turned down by the spectrum efficiency of the BLER value of the terminal chosen lower than the BLER lower limit preset and indicated by the CQI value of this terminal feedback.
Described terminal scheduling unit 42 for:
If the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is lower than the spectrum efficiency lower limit preset, then the PDCCH polymerization grade of this terminal is heightened;
If the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is higher than the spectrum efficiency higher limit preset, then the PDCCH polymerization grade of this terminal is turned down.
This equipment also comprises:
Interference level parameter transmitting element 43, at the PDCCH polymerization grade according to each terminal after adjustment, determines the PDCCH interference level parameter value of current area, and the PDCCH interference level parameter value determined is sent to the adjacent cell base station of current area.
Described interference level parameter transmitting element 43 for:
According to following formula, determine the PDCCH interference level parameter value of current area according to the PDCCH polymerization grade of each terminal after adjustment:
Wherein, PII localfor the PDCCH interference level parameter value of current area determined, k ifor be greater than 0 and be less than 1 fitting coefficient, and cCE ueifor the PDCCH polymerization grade of i-th terminal after adjustment, m is the sum treating dispatch terminal chosen, and i is value in 1 to m.
See Fig. 5, the embodiment of the present invention also provides a kind of terminal scheduling equipment, and this equipment comprises:
Terminal chooses unit 50, for choosing terminal to be scheduled in current area;
Polymerization grade adjustment unit 51, for obtaining the quality parameter value of eating dishes without rice or wine of the terminal chosen, adjusts the physical downlink control channel PDCCH polymerization grade of this terminal according to the quality parameter value of eating dishes without rice or wine got;
Terminal scheduling unit 52, for the PDCCH polymerization grade according to each terminal after adjustment, is this terminal distribution PDCCH resource, and sends the dispatch carrying respective resources assignment information to this terminal.
Described polymerization grade adjustment unit 51 for:
When described quality parameter value of eating dishes without rice or wine comprises the block error rate BLER value of Physical Downlink Shared Channel PDSCH, if the BLER value of the terminal chosen is higher than the BLER higher limit preset, then the PDCCH polymerization grade of this terminal is heightened; If the BLER value of the terminal chosen is lower than the BLER lower limit preset, then the PDCCH polymerization grade of this terminal is turned down.
Described polymerization grade adjustment unit 51 for:
When described quality parameter value of eating dishes without rice or wine comprises BLER value and the channel quality indicator (CQI) value of PDSCH, if the PDCCH polymerization grade of this terminal lower than the spectrum efficiency lower limit preset, is then heightened by the spectrum efficiency of the BLER value of the terminal chosen higher than the BLER higher limit preset and indicated by the CQI value of this terminal feedback; If the PDCCH polymerization grade of this terminal higher than the spectrum efficiency higher limit preset, is then turned down by the spectrum efficiency of the BLER value of the terminal chosen lower than the BLER lower limit preset and indicated by the CQI value of this terminal feedback.
Described polymerization grade adjustment unit 51 for:
When described quality parameter value of eating dishes without rice or wine comprises CQI value, if the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is lower than the spectrum efficiency lower limit preset, then the PDCCH polymerization grade of this terminal is heightened; If the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is higher than the spectrum efficiency higher limit preset, then the PDCCH polymerization grade of this terminal is turned down.
This equipment also comprises:
Interference level parameter transmitting element 53, at the PDCCH polymerization grade according to each terminal after adjustment, determines the PDCCH interference level parameter value of current area, and the PDCCH interference level parameter value determined is sent to the adjacent cell base station of current area.
Described interference level parameter transmitting element 53 for:
According to following formula, determine the PDCCH interference level parameter value of current area according to the PDCCH polymerization grade of each terminal after adjustment:
Wherein, PII localfor the PDCCH interference level parameter value of current area determined, k ifor be greater than 0 and be less than 1 fitting coefficient, and cCE ueifor the PDCCH polymerization grade of i-th terminal after adjustment, m is the sum treating dispatch terminal chosen, and i is value in 1 to m.
The terminal scheduling equipment that the embodiment of the present invention provides can be specifically base station.
To sum up, beneficial effect of the present invention comprises:
In the scheme that the embodiment of the present invention provides, the PDCCH interference level parameter value of the adjacent cell of acquisition current area, base station, according to getting PDCCH interference level parameter value, the dispatch terminal number of adjustment current area; And according to the dispatch terminal number after adjustment, carry out terminal scheduling in current area.Visible, in this programme, base station by the dispatch terminal number of adjustment current area, can adjust the reception interference level of the PDCCH of current area, reaches the large object of reception interference level of the PDCCH of this control either own cell, community.
In the scheme that the embodiment of the present invention provides, terminal to be scheduled in base station selection current area; Obtain the quality parameter value of eating dishes without rice or wine of the terminal chosen, adjust the PDCCH polymerization grade of this terminal according to the quality parameter value of eating dishes without rice or wine got; According to the PDCCH polymerization grade of each terminal after adjustment, be this terminal distribution PDCCH resource, and send the dispatch carrying respective resources assignment information to this terminal.Visible, in this programme, base station by the PDCCH polymerization grade of adjustment terminal, can adjust the reception interference level of the PDCCH of current area, reaches the large object of reception interference level of the PDCCH of this control either own cell, community.
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 (12)

1. a terminal scheduling method, is characterized in that, the method comprises:
Terminal to be scheduled in base station selection current area;
Base station obtains the quality parameter value of eating dishes without rice or wine of the terminal chosen, and adjusts the physical downlink control channel PDCCH polymerization grade of this terminal according to the quality parameter value of eating dishes without rice or wine got;
Base station, according to the PDCCH polymerization grade of each terminal after adjustment, is this terminal distribution PDCCH resource, and sends the dispatch carrying respective resources assignment information to this terminal.
2. the method for claim 1, it is characterized in that, when described quality parameter value of eating dishes without rice or wine comprises the block error rate BLER value of Physical Downlink Shared Channel PDSCH, described base station is according to the quality parameter value of eating dishes without rice or wine of the terminal chosen, and the PDCCH polymerization grade adjusting this terminal comprises:
If the BLER value of the terminal chosen is higher than the BLER higher limit preset, then the PDCCH polymerization grade of this terminal is heightened by base station;
If the BLER value of the terminal chosen is lower than the BLER lower limit preset, then the PDCCH polymerization grade of this terminal is turned down by base station.
3. the method for claim 1, it is characterized in that, when described quality parameter value of eating dishes without rice or wine comprises BLER value and the channel quality indicator (CQI) value of PDSCH, described base station is according to the quality parameter value of eating dishes without rice or wine of the terminal chosen, and the PDCCH polymerization grade adjusting this terminal comprises:
If the spectrum efficiency of the BLER value of the terminal chosen higher than the BLER higher limit preset and indicated by the CQI value of this terminal feedback is lower than the spectrum efficiency lower limit preset, then the PDCCH polymerization grade of this terminal is heightened by base station;
If the spectrum efficiency of the BLER value of the terminal chosen lower than the BLER lower limit preset and indicated by the CQI value of this terminal feedback is higher than the spectrum efficiency higher limit preset, then the PDCCH polymerization grade of this terminal is turned down by base station.
4. the method for claim 1, is characterized in that, when described quality parameter value of eating dishes without rice or wine comprises CQI value, described base station is according to the quality parameter value of eating dishes without rice or wine of the terminal chosen, and the PDCCH polymerization grade adjusting this terminal comprises:
If the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is lower than the spectrum efficiency lower limit preset, then the PDCCH polymerization grade of this terminal is heightened by base station;
If the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is higher than the spectrum efficiency higher limit preset, then the PDCCH polymerization grade of this terminal is turned down by base station.
5. as the method as described in arbitrary in claim 1-4, it is characterized in that, after the PDCCH polymerization grade of each terminal chosen base station adjustment, the method comprises further:
Base station, according to the PDCCH polymerization grade of each terminal after adjustment, is determined the PDCCH interference level parameter value of current area, and the PDCCH interference level parameter value determined is sent to the adjacent cell base station of current area.
6. method as claimed in claim 5, is characterized in that, the PDCCH interference level parameter value of current area, according to following formula, is determined in base station according to the PDCCH polymerization grade of each terminal after adjustment:
Wherein, PII localfor the PDCCH interference level parameter value of current area determined, k ifor be greater than 0 and be less than 1 fitting coefficient, and cCE ueifor the PDCCH polymerization grade of i-th terminal after adjustment, m is the sum treating dispatch terminal chosen, and i is value in 1 to m.
7. a terminal scheduling equipment, is characterized in that, this equipment comprises:
Terminal chooses unit, for choosing terminal to be scheduled in current area;
Polymerization grade adjustment unit, for obtaining the quality parameter value of eating dishes without rice or wine of the terminal chosen, adjusts the physical downlink control channel PDCCH polymerization grade of this terminal according to the quality parameter value of eating dishes without rice or wine got;
Terminal scheduling unit, for the PDCCH polymerization grade according to each terminal after adjustment, is this terminal distribution PDCCH resource, and sends the dispatch carrying respective resources assignment information to this terminal.
8. equipment as claimed in claim 7, is characterized in that, described polymerization grade adjustment unit specifically for:
When described quality parameter value of eating dishes without rice or wine comprises the block error rate BLER value of Physical Downlink Shared Channel PDSCH, if the BLER value of the terminal chosen is higher than the BLER higher limit preset, then the PDCCH polymerization grade of this terminal is heightened; If the BLER value of the terminal chosen is lower than the BLER lower limit preset, then the PDCCH polymerization grade of this terminal is turned down.
9. equipment as claimed in claim 7, is characterized in that, described polymerization grade adjustment unit specifically for:
When described quality parameter value of eating dishes without rice or wine comprises BLER value and the channel quality indicator (CQI) value of PDSCH, if the PDCCH polymerization grade of this terminal lower than the spectrum efficiency lower limit preset, is then heightened by the spectrum efficiency of the BLER value of the terminal chosen higher than the BLER higher limit preset and indicated by the CQI value of this terminal feedback; If the PDCCH polymerization grade of this terminal higher than the spectrum efficiency higher limit preset, is then turned down by the spectrum efficiency of the BLER value of the terminal chosen lower than the BLER lower limit preset and indicated by the CQI value of this terminal feedback.
10. equipment as claimed in claim 7, is characterized in that, described polymerization grade adjustment unit specifically for:
When described quality parameter value of eating dishes without rice or wine comprises CQI value, if the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is lower than the spectrum efficiency lower limit preset, then the PDCCH polymerization grade of this terminal is heightened; If the spectrum efficiency indicated by the CQI value of the terminal feedback chosen is higher than the spectrum efficiency higher limit preset, then the PDCCH polymerization grade of this terminal is turned down.
11. as the equipment as described in arbitrary in claim 7-10, and it is characterized in that, this equipment also comprises:
Interference level parameter transmitting element, for the PDCCH polymerization grade according to each terminal after adjustment, determines the PDCCH interference level parameter value of current area, and the PDCCH interference level parameter value determined is sent to the adjacent cell base station of current area.
12. equipment as claimed in claim 11, is characterized in that, described interference level parameter transmitting element specifically for:
According to following formula, determine the PDCCH interference level parameter value of current area according to the PDCCH polymerization grade of each terminal after adjustment:
Wherein, PII localfor the PDCCH interference level parameter value of current area determined, k ifor be greater than 0 and be less than 1 fitting coefficient, and cCE ueifor the PDCCH polymerization grade of i-th terminal after adjustment, m is the sum treating dispatch terminal chosen, and i is value in 1 to m.
CN201310046190.6A 2011-01-14 2011-01-14 Terminal scheduling method and apparatus Active CN103096484B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310046190.6A CN103096484B (en) 2011-01-14 2011-01-14 Terminal scheduling method and apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011100086507A CN102118870B (en) 2011-01-14 2011-01-14 Method and device for dispatching terminal
CN201310046190.6A CN103096484B (en) 2011-01-14 2011-01-14 Terminal scheduling method and apparatus

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN2011100086507A Division CN102118870B (en) 2011-01-14 2011-01-14 Method and device for dispatching terminal

Publications (2)

Publication Number Publication Date
CN103096484A CN103096484A (en) 2013-05-08
CN103096484B true CN103096484B (en) 2015-08-26

Family

ID=44217418

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201310046190.6A Active CN103096484B (en) 2011-01-14 2011-01-14 Terminal scheduling method and apparatus
CN2011100086507A Active CN102118870B (en) 2011-01-14 2011-01-14 Method and device for dispatching terminal

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN2011100086507A Active CN102118870B (en) 2011-01-14 2011-01-14 Method and device for dispatching terminal

Country Status (1)

Country Link
CN (2) CN103096484B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103096333B (en) * 2011-11-08 2015-09-09 华为技术有限公司 The coordination approach of Physical Downlink Control Channel interference and base station
CN102412950A (en) * 2011-11-15 2012-04-11 中兴通讯股份有限公司 Coordination system of power of downlink control channel and method thereof
CN103313401B (en) * 2012-03-14 2016-03-02 普天信息技术研究院有限公司 A kind of method and device adjusting PDCCH form
CN104486769B (en) * 2014-12-03 2018-04-10 中国联合网络通信集团有限公司 A kind of choosing method and device for being worth cell
CN105050193B (en) * 2015-07-20 2019-02-01 华为技术有限公司 A kind of signal sends, demodulation method and equipment and system
CN113286320B (en) * 2020-02-19 2022-04-12 大唐移动通信设备有限公司 Method and device for adjusting CCE aggregation level of control channel unit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101741437A (en) * 2008-11-19 2010-06-16 中国移动通信集团公司 Uplink power control method, system and equipment
WO2010085187A1 (en) * 2009-01-21 2010-07-29 Telefonaktiebolaget L M Ericsson (Publ) Self-organizing network control for pucch resources
CN101841847A (en) * 2009-03-18 2010-09-22 大唐移动通信设备有限公司 Feedback method, system and device for channel quality indication information
CN101860912A (en) * 2009-04-09 2010-10-13 大唐移动通信设备有限公司 Resource allocation method, device and system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8023955B2 (en) * 2005-08-22 2011-09-20 Sony Corporation Uplink resource allocation to control intercell interference in a wireless communication system
KR100765892B1 (en) * 2006-08-30 2007-10-10 주식회사 팬택 Method of controlling inter-cell interference for a mobile communication system
US7945258B2 (en) * 2007-07-31 2011-05-17 Broadcom Corporation Wireless device operable to manipulate high-speed shared control channel (HSSCCH) quality control through channel quality indication report manipulation
CN101945409B (en) * 2010-09-03 2014-11-19 新邮通信设备有限公司 Method and device for coordinating dynamic interference between neighboring cells of wireless communication system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101741437A (en) * 2008-11-19 2010-06-16 中国移动通信集团公司 Uplink power control method, system and equipment
WO2010085187A1 (en) * 2009-01-21 2010-07-29 Telefonaktiebolaget L M Ericsson (Publ) Self-organizing network control for pucch resources
CN101841847A (en) * 2009-03-18 2010-09-22 大唐移动通信设备有限公司 Feedback method, system and device for channel quality indication information
CN101860912A (en) * 2009-04-09 2010-10-13 大唐移动通信设备有限公司 Resource allocation method, device and system

Also Published As

Publication number Publication date
CN103096484A (en) 2013-05-08
CN102118870B (en) 2013-11-20
CN102118870A (en) 2011-07-06

Similar Documents

Publication Publication Date Title
KR102449151B1 (en) Apparatus and method for power control, reporting and uplink transmission
US10165583B2 (en) Scheduling method, apparatus, and system
CN102088735B (en) Method and equipment for balancing inter-sub-frame traffic load and processing inter-cell interference (ICI)
CN103096484B (en) Terminal scheduling method and apparatus
CN102404853B (en) Method for sending PDCCHs (Physical Downlink Control Channels) and equipment for sending PDCCHs
CN104125645B (en) A kind of control channel unit polymerization grade determines method and device
CN104661316A (en) Sending method and device for scheduling request under carrier aggregation, and terminal
CN106793047B (en) Uplink power control method and base station
WO2014003856A1 (en) Communication transmission system
WO2012037871A1 (en) Inter-cell interference coordination simulation method and device therefor
CN102821470B (en) A kind of physical downlink control channel resource distribution method and device
JP6900520B2 (en) Power processing methods, equipment, and storage media
CN107872890A (en) The method and apparatus of scheduled transmission in a kind of wireless communication system
CN105228234A (en) Interference control method and equipment, base station
CN102065550A (en) Method and device for reducing inter-cell interference of orthogonal frequency division multiplexing system and terminal thereof
CN104066193A (en) Scheduling method and device
US20150263818A1 (en) Physical downlink control channel (pdcch) inter-cell-interference coordination
CN102340787B (en) User management method for coordinating interference among communities and system
CN103199973B (en) Multipoint cooperative dispatching method and device
CN106571857A (en) Interference suppression method, network server and base station using the same
CN103327590A (en) Method and device for determining transmitted power
CN105187163A (en) Multi-cell joint adaptive modulation coding method based on round robin scheduling
CN103052070A (en) Method for configuring and optimizing carrier frequencies in multiple carrier frequency system and wireless network controller
Malmirchegini et al. Distributed and adaptive optimization of LTE-TDD configuration based on UE traffic type
CN106301717B (en) The method of adjustment and device of MCS in group service transmission

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant