CN102340778B - Adjustment method of high interference preindication information and apparatus thereof - Google Patents
Adjustment method of high interference preindication information and apparatus thereof Download PDFInfo
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- CN102340778B CN102340778B CN201010236654.6A CN201010236654A CN102340778B CN 102340778 B CN102340778 B CN 102340778B CN 201010236654 A CN201010236654 A CN 201010236654A CN 102340778 B CN102340778 B CN 102340778B
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Abstract
The invention relates to the wireless communication technology field and discloses an adjustment method of high interference preindication information and an apparatus thereof. By using the method and the apparatus of the invention, a cell edge user (CEU) of a cell can satisfy a guaranteed bit rate (GBR) requirement and the high interference generated by the scheduled CEU on a outer cell (OC) frequency band of the adjacent cell to the cell can be avoided. The adjustment method of the high interference preindication information comprises the following steps: when a base station determines that the high interference preindication information of all the adjacent cell of cell is received, acquiring adjacent-cell high interference preindication integration information of each sub-band; when triggering time of adjusting the OC frequency band of the cell is arrived, determining a state reference value which represents the whole GBR satisfaction state of the CEU; adjusting OC frequency bandwidth and position of the cell according to the adjacent-cell high interference preindication integration information and the state reference value; generating the high interference preindication information according to adjusted OC frequency bandwidth and position of the cell and sending to the each adjacent cell.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to method of adjustment and the device of the pre-indication information of a kind of high interference.
Background technology
OFDM (Orthogonal Frequency Division Multiplexing, OFDM) system, compare CDMA (Code Division Multiple Access, code division multiple access) problem of inter-cell interference that systems face is more serious, because the size of its presence of intercell interference is determined, at present at 3GPP (3 by the position of user and transmitting power
rdgeneration Partnership Project) LTE (Long Term Evolution, Long Term Evolution) in for minizone uplink interference level control research mainly adopt ICIC (Inter cell Interference Coordination, Inter-Cell Interference Coordination) technology.
At present in LTE system, the static ICIC scheme of the many employings of ICIC technology, due to parallel compensate geo-stationary, is uniformly distributed user and the smooth business of load, uses static ICIC can obtain very large gain.But the user in real system, business and cell load uneven distribution, therefore introduce semi-static ICIC, according to the change of adjacent area interference and load, dynamic conditioning frequency band and power.
The coordinating content of semi-static ICIC transmits signaling by X2 interface between the base stations, mainly comprise uplink interference overload instruction (UL Interference Overload, OI), up high interference instruction (UL High Interference Indication, and Relative Narrowband TX Power (Relative Narrowband Tx Power, RNTP) HII).OI can send up situation about being interfered to adjacent area, HII and RNTP message can send the band information shared by this Cell Edge User to adjacent area.Receive the community of HII, RNTP and OI message, utilize above-mentioned information to carry out process and dynamic conditioning edge customer frequency band.
Do not consider to ensure bit rate (Guaranteed Bit Rate to evading of disturbing between neighbor cell in the solution that semi-static ICIC is current, GBR) factor, does not provide between frequency band adjustment and neighbor cell yet and disturbs the specific strategy of evading.
Summary of the invention
The invention provides method of adjustment and the device of the pre-indication information of a kind of high interference, make CEU (the Cell Edge User of this community, Cell Edge User) GBR requirement can be met, and the high interference that the CEU that can avoid that OC (Outer Cell, the cell edge region) frequency band of adjacent area is dispatched produces local area.
A method of adjustment for the pre-indication information of high interference, comprising:
When the high interference of all adjacent areas, this community pre-indication information is determined to receive in base station, the adjacent area high interference obtaining each subband indicates integrated information in advance;
When the trigger instants adjusting this cell edge region OC frequency band arrives, determine to represent that the entirety of this community CEU ensures that bit rate GBR meets the state reference value of state;
Integrated information and state reference value is indicated to adjust OC frequency bandwidth and the position of this community in advance according to adjacent area high interference; Wherein, when determining that the OC frequency band of this community enough meets the demand of CEU according to state reference value, integrated information is indicated to be reduced by the OC frequency band of this community in advance in conjunction with adjacent area high interference, when determining that the OC frequency band of this community does not meet the demand of CEU according to state reference value, integrated information is indicated to be expanded by the OC frequency band of this community in advance in conjunction with adjacent area high interference;
Generate the pre-indication information of high interference of this community according to the OC frequency bandwidth after the adjustment of this community and position and send to each adjacent area.
Preferably, described method also comprises:
Base station does not receive adjacent area high interference when described trigger instants arrives indicates integrated information in advance, then obtain the pre-indication information of high interference of this community according to this community current OC frequency bandwidth and position.
Preferably, when determining the trigger instants arrival adjusting this community OC frequency band, determine to represent that the overall GBR of this Cell Edge User CEU meets the state reference value of state, specifically comprise:
When arriving trigger instants, statistically a trigger instants is to this trigger instants, the actual flow of each CEU of this community;
Determine state reference value
wherein, R
irepresent the actual flow of i-th CEU; GBR
irepresent all business GBR summations of i-th CEU; N
cEUrepresent the sum of CEU in this community; Wi represents the service priority weight of i-th CEU.
Preferably, indicate integrated information and state reference value to adjust OC frequency bandwidth and the position of this community in advance according to adjacent area high interference, be specially:
Work as T
gBR_CEU> HIPIGBRThr1, the sub band number of the OC frequency band of this community to be less than or equal under OC frequency band sub band number in limited time, keep OC frequency bandwidth and the invariant position of this community, otherwise, indicate integrated information reduce the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference;
As HIPIGBRThr1>=T
gBR_CEUduring>=HIPIGBRThr2, then keep OC frequency bandwidth and the invariant position of this community;
As 0 < T
gBR_CEUduring < HIPIGBRThr2, integrated information is indicated to increase the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference;
Work as T
gBR_CEUwhen=0, if there is CEU this community, then keep OC frequency bandwidth and the invariant position of this community, if this community does not have CEU, prescribe a time limit under the sub band number of the OC frequency band of this community is less than or equal to OC frequency band sub band number, keep OC frequency bandwidth and the invariant position of this community, otherwise, integrated information is indicated to reduce the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference, wherein, HIPIGBRThr1, HIPIGBRThr2 represent that the overall GBR of this community CEU meets first, second status threshold values of state.
An adjusting device for the pre-indication information of high interference, comprising:
Adjacent area integrated information obtains module, and during the pre-indication information of the high interference for determining to receive all adjacent areas, this community, the adjacent area high interference obtaining each subband indicates integrated information in advance;
State reference value obtains module, during for arriving when the trigger instants adjusting this community OC frequency band, determines to represent that the overall GBR of this Cell Edge User CEU meets the state reference value of state;
Adjusting module, for the OC frequency bandwidth and the position that indicate integrated information and state reference value to adjust this community according to adjacent area high interference in advance; Wherein, when determining that the OC frequency band of this community enough meets the demand of CEU according to state reference value, integrated information is indicated to be reduced by the OC frequency band of this community in advance in conjunction with adjacent area high interference, when determining that the OC frequency band of this community does not meet the demand of CEU according to state reference value, integrated information is indicated to be expanded by the OC frequency band of this community in advance in conjunction with adjacent area high interference;
Generation module, for generating the pre-indication information of high interference of this community according to the OC frequency bandwidth after the adjustment of this community and position and send to each adjacent area.
The embodiment of the present invention provides the method for adjustment of the pre-indication information of a kind of high interference, the high interference of state reference value and neighbor cell that base station can meet state according to the GBR of the entirety representing this community CEU indicates the OC frequency band of integrated information to this community to adjust in advance, to make the edge customer of this community can meet GBR requirement, and the high interference that the edge customer can avoiding that the OC frequency band of adjacent area is dispatched produces local area.
Accompanying drawing explanation
The flow chart of the method for adjustment of the pre-indication information of a kind of high interference that Fig. 1 provides for the embodiment of the present invention;
The flow chart of the method for adjustment of a kind of HII indication information that Fig. 2 provides for the embodiment of the present invention;
The OC frequency band that Fig. 3 A is OC frequency band when the high order end of whole system bandwidth or low order end reduces schematic diagram;
The OC frequency band that Fig. 3 B is OC frequency band when whole system bandwidth middle reduces schematic diagram;
The OC frequency band that Fig. 4 A is OC frequency band when the high order end of whole system bandwidth or low order end reduces process flow diagram;
The OC frequency band that Fig. 4 B is OC frequency band when whole system bandwidth middle reduces process flow diagram;
The OC frequency band that Fig. 5 A is OC frequency band when the high order end of whole system bandwidth or low order end expands schematic diagram;
The OC frequency band that Fig. 5 B is OC frequency band when whole system bandwidth middle expands schematic diagram;
The OC frequency band expansion process flow chart that Fig. 6 A is OC frequency band when the high order end of whole system bandwidth or low order end;
The OC frequency band expansion process flow chart that Fig. 6 B is OC frequency band when whole system bandwidth middle;
Fig. 7 A is T
gBR_CEUthe OC frequency band of=0 Shi Zhe community OC frequency band when the high order end of whole system bandwidth or low order end reduces process flow diagram;
Fig. 7 B is T
gBR_CEUthe OC frequency band of=0 Shi Zhe community OC frequency band when whole system bandwidth middle reduces process flow diagram;
The structure chart of the adjusting device of the pre-indication information of a kind of high interference that Fig. 8 provides for the embodiment of the present invention.
Embodiment
Because existing semi-static ICIC technology evades the GBR requirement not considering user to the interference between neighbor cell, and do not provide concrete frequency band adjustment and interference evasion tactics yet, the present invention is directed to above-mentioned defect and propose the method for adjustment that a kind of high interference indicates HIPI information in advance, according to representing that the high interference of state reference value and neighbor cell that the GBR of this community CEU meets state indicates the OC frequency band of integrated information to this community to adjust in advance, GBR requirement can be met to make the edge customer of this community, and the high interference that the edge customer can avoiding that the OC frequency band of adjacent area is dispatched produces local area.
The embodiment of the present invention gives generation and the processing scheme of the pre-indication information of high interference for LTE system.For up link, refer to generation and the process of HII information; For down link, refer to generation and the process of RNTP information, both processing modes are substantially identical, and a species diversity is adjacent area high interference when indicating integrated information identical in advance, and the many OI information of up link can utilize; Another kind of difference to be HII be 1 frequency band must continuously, and the frequency band that RNTP is 1 can be discontinuous, for RNTP be 1 frequency band continuous print situation identical with the process of HII; The process for RNTP being the discontinuous situation RNTP of frequency band of 1 is more flexible, the position of OC frequency band in system bandwidth and expansion can not be considered or reduce sub-band sequence and the position of OC frequency band, namely the adjacent area RNTP integrated information of more all IC frequency bands during OC frequency band is expanded, subband maximum for adjacent area RNTP integrated information is adjusted to OC frequency band, reduce the adjacent area RNTP integrated information of more all OC frequency bands during OC frequency band, subband minimum for adjacent area RNTP integrated information is adjusted to IC frequency band, and the embodiment of the present invention is only described in detail for OC frequency band continuous print situation.
The embodiment of the present invention provides the method for adjustment of the pre-indication information of a kind of high interference, as shown in Figure 1, comprising:
When the high interference of all adjacent areas, this community pre-indication information is determined to receive in S101, base station, the adjacent area high interference obtaining each subband indicates integrated information in advance
S102, when the trigger instants adjusting this cell edge region OC frequency band arrives, determine to represent that the entirety of this Cell Edge User CEU ensures that bit rate GBR meets the state reference value T of state
gBR_CEU;
S103, integrated information and state reference value is indicated to adjust OC frequency bandwidth and the position of this community in advance according to adjacent area high interference;
HIPIGBRThr1, HIPIGBRThr2 represent that the overall GBR of this community CEU meets first, second status threshold values of state, HIPIGBRThr1 represents that the overall GBR of this community CEU meets good first status threshold values of state, as the state reference value T of this community
gBR_CEUduring > HIPIGBRThr1, represent that the overall GBR of the CEU of this community meets state better, the OC frequency band of Ji Zhe community enough meets the demand of CEU; HIPIGBRThr2 represents that the overall GBR of this community CEU meets the second poor status threshold values of state, as the state reference value T of this community
gBR_CEUduring < HIPIGBRThr2, represent that the overall GBR of the CEU of this community meets state poor, the OC frequency band of Ji Zhe community is not enough to the demand meeting CEU;
The determination principle of HIPIGBRThr1, HIPIGBRThr2 two threshold values is as follows: for each community, when the trigger instants of each adjustment OC frequency band arrives, meet the state reference value T of state according to the overall GBR of the CEU of this community of method statistic described in step S102
gBR_CEU; Finally according to the T of all adjustment in added up all communities OC frequency band trigger instants
gBR_CEUspan determine the value of HIPIGBRThr1 and HIPIGBRThr2;
ThresholdNeibHIPI is the threshold value that adjacent area high interference indicates integrated information in advance, and represent that adjacent area high interference indicates integrated information higher than this thresholding in advance on a subband, then on this subband, high interference will be caused to this community in adjacent area;
Concrete, for LTE system up link, HIPIGBRThr1 is HIIGBRThr1, HIPIGBRThr2 be HIIGBRThr2, ThresholdNeibHIPI is ThresholdNeibHii;
S104, according to this community adjustment after OC frequency bandwidth and position generate the pre-indication information of high interference of this community and send to each adjacent area.
Namely the position of OC frequency band refers to the resource location that OC frequency band is shared in system bandwidth;
For LTE system up link, the pre-indication information of high interference is HII indication information, and for LTE system down link, the pre-indication information of high interference is RNTP information.
Describe the scheme of the embodiment of the present invention in detail for the HII information of the up link of LTE system below in conjunction with accompanying drawing.
The method of adjustment of a kind of HII indication information that the embodiment of the present invention provides, as shown in Figure 2, specifically comprises:
S201, UE (subscriber equipment) access network, UE type is determined in base station;
Base station side RRC (Radio Resource Control, wireless heterogeneous networks) layer divides the starting type of access UE according to A3 trigger event, the GBR of MAC (Media Access Control, medium education) layer foundation UE meets state and can readjust UE type;
UE type is divided into CCU (Cell Center User, Cell Center User) and CEU, RSRP (the Reference Signal Received Power of the Serving cell that CCU and CEU can be reported by UE measurement and adjacent cell, Reference Signal Received Power) or RSRQ (Reference Signal Received Quality, Reference Signal Received Quality) differentiate, MAC layer can also meet according to the GBR of UE the adjustment that state carries out UE type;
Each community is handled as follows:
OC, IC (Inner Cell, the center of housing estate region) frequency band of S202, acquisition current time community, base station, and determine the initial indication information of the HII of community;
Suppose that each base station is by M1 MPS process, be then M1 frequency band by whole system bandwidth partition, and ensure that each frequency band is not overlapping and mutually orthogonal, represent the initial OC frequency band of M1 community respectively, the then initial OC frequency band non-overlapping copies of all communities under base station, the system bandwidth outside each cell initial OC frequency band is its initial IC frequency band; To each community, its Neighboring Cell List is determined by the rrc layer of base station side, and those adjacent areas being greater than certain thresholding with this area interference should be chosen in adjacent area, specifically can consider and the factors such as the distance of this community and antenna direction; Owing to there is the community with local area OC band overlapping in Neighboring Cell List, so suggestion rrc layer gives initial OC, IC frequency band that the cell configuration less with the interference of this community is identical with this community;
Time initial, base station is initial OC, IC frequency band of cell allocation, and arranges OC, IC band information of HII indication information for identifying cells, and sends to adjacent area; Base station arranges the bit map of HII instruction, and the frequency band that HII is designated as 1 represents OC frequency band, and the frequency band that HII is designated as 0 represents IC frequency band;
In subsequent process, base station obtains OC, IC band information of community according to the HII indication information that a upper trigger instants base station generates;
S203, arrive the trigger instants of this community of predetermined adjustment OC frequency band, judging whether to obtain adjacent area HII integrated information, when judged result is for being, performing step S205, when judged result is no, perform step S204;
Set the trigger instants of initial this community of adjustment OC frequency band, the process window long renewal trigger instants that subsequent interval is fixing, fixing process window length is generally greater than the time of delay of X2 interface, set as required simultaneously, process window is long too small, then interface signaling frequently causes X2 interface load serious alternately, if process window is long excessive, then the HII indication information of community upgrades meeting not in time;
S204, keep OC, IC frequency band of this community constant, HII indication information when a upper trigger instants HII indication information of this community triggers as this;
HII indication information time initial, when triggering, if there is no adjacent area HII integrated information, is triggered the HII indication information of Shi Zhe community by first time as this;
S205, acquisition represent that the overall GBR of this community CEU meets the state reference value of state;
Be specially: a, add up this community from a upper trigger instants to the actual flow of all CEU of this trigger instants;
B, basis
obtain and represent that the overall GBR of this community CEU meets the state reference value T of state
gBR_CEU;
Wherein, R
irepresent the actual flow of i-th CEU; GBR
irepresent all business GBR summations of i-th CEU; N
cEUrepresent the sum of CEU in this community; Wi represents the service priority weight of i-th CEU, generally gets the priority of logical channels that this UE priority is the highest.
S206, adjust OC frequency bandwidth and the position of this community according to adjacent area HII integrated information and state reference value;
S207, generate the HII indication information of this community according to the OC frequency bandwidth after the adjustment of this community and position, the HII information of Bing Jiangzhe community send to this community each specify adjacent area;
S208, needs transmission data time, the HII indication information according to this community is dispatched;
Namely in each transmitting uplink data moment, base station is dispatched according to the HII indication information of this community, CEU is only designated as 1 OC resource at HII is dispatched, CCU is designated as in the IC resource of 0 at HII and dispatches, if OC resource has residue, CCU also can dispatch in remaining OC resource;
In the process moment of S209, arrival HII information, the HII information of base station to the adjacent area on each subband received is weighted summation, obtains the adjacent area HII integrated information on each subband
Wherein, the moment this community being received first the HII information of all adjacent areas is decided to be the initial treatment moment of this community HII information, the process window long update process moment that subsequent interval is fixing; The process window of the process window length in this step and the trigger instants in step S203 is long can be the same or different;
When arriving the process moment, summation process is weighted to the HII information of the adjacent area on each subband, the wherein weights reflection adjacent area of each adjacent area and the interference size of this community, thus obtaining the HII integrated information of the adjacent area on each subband, the HII integrated information of each subband represents that adjacent area in this subband Shang Zhe community is to the reference quantity of the interference that this community will produce;
Wherein, the execution of step S209 can any time between step S201 ~ S208, does not limit the execution sequence of step S209 in embodiments of the present invention.
OC frequency bandwidth and the position of this community is wherein adjusted in step S206 according to adjacent area HII integrated information and state reference value, main adjustable strategies is: when the overall GBR of this community CEU meet state better time, the OC frequency band representing this community enough meets the demand of CEU, then the OC frequency band of this community can be reduced; When the overall GBR of this community CEU meet state poor time, the OC frequency band representing this community is not enough to meet the demand of CEU, then the OC frequency band of this community can be expanded, to meet the demand of CEU, simultaneously to OC frequency band reduce and in expansion process, need the disturbance regime considering that adjacent cell will produce this community, namely need the adjacent area HII integrated information considered on each subband.
For down link, then base station arranges OC, IC band information of RNTP message identification community, and sends to adjacent area; Base station arranges the bit map of RNTP instruction, and the frequency band that RNTP is designated as 1 represents OC frequency band, and the frequency band that RNTP is designated as 0 represents IC frequency band, processing procedure and HII information process similar; And in step S208, then in each downlink data transmission moment, base station is dispatched according to the RNTP information of this community.
Concrete point of following 4 kinds of situations adjust in embodiments of the present invention, but concrete grouping situation is not limited to following several situations.
Below in conjunction with the adjustment process in often kind of situation that the accompanying drawing detailed description embodiment of the present invention provides.
In embodiments of the present invention, following concept is first described:
Frequency band: be made up of subband, subband is the least unit of Resourse Distribute, and concerning LTE system in embodiment, the least unit of Resourse Distribute is Resource Block (Resource Block, RB);
OC frequency band: HII is designated as the frequency band of 1;
IC frequency band: HII is designated as the frequency band of 0;
Suppose that the default property newly accessing UE is CEU, for the sub band number newly accessing UE reserved is NRB
reserved, for the community having CEU, if the sub band number that the GBR meeting CEU requires is NRB
cEUGBR, then for the community having CEU, the OC frequency band sub band number lower limit NRB that OC frequency band can narrow down to
min=max{NRB
reserved, NRB
cEUGE, for the community not having CEU, the OC frequency band sub band number lower limit NRB that OC frequency band can narrow down to
min=NRB
reserved.
HIIGBRThr1 represents that the overall GBR of this community CEU meets the good threshold value of state, as the state reference value T of this community
gBR_CEUduring > HIIGBRThr1, represent that the overall GBR of the CEU of this community meets state better, the OC frequency band of Ji Zhe community enough meets the demand of CEU; HIIGBRThr2 represents that the overall GBR of this community CEU meets the poor threshold value of state, as the state reference value T of this community
gBR_CEUduring < HIIGBRThr2, represent that the overall GBR of the CEU of this community meets state poor, the OC frequency band of Ji Zhe community is not enough to the demand meeting CEU; ThresholdNeibHii is the threshold value of adjacent area HII integrated information, and represent that adjacent area HII integrated information is higher than this thresholding on a subband, then on this subband, high interference will be caused to this community in adjacent area;
N
hII=1, the sub band number of the OC frequency band of this community, the HII of Ji Zhe community is designated as the sub band number of 1;
adjacent area HII integrated information;
Adjustment step-length, in units of subband, concrete setting is determined as the case may be by base station, and total determination principle ensures that base station is when carrying out the adjustment of OC frequency band, and the fluctuation range of adjustment can not be too large.
1, T is worked as
gBR_CEU> HIIGBRThr1, illustrates that the overall GBR of the CEU of this community meets in good shape, can reduce OC frequency band; The width specifically reduced and the position reduced will be considered according to the OI information of adjacent area HII integrated information and this community;
The concrete process that reduces can be divided into two stages, first stage OC frequency band is reduced successively an adjustment step-length subband, adjacent area HII integrated information is not considered in this reduces the scope, the sub band number that second stage reduces is not more than adjustment step-length, need when continuing to reduce to consider adjacent area HII integrated information, reduce in process whole, as long as meet the OC frequency band sub band number after reducing to equal OC frequency band sub band number lower limit, just terminate no longer to reduce; And reducing in process in second stage, as long as when adjacent area HII integrated information is less than or equal to ThresholdNeibHii, also directly terminates, no longer reduce;
A, when the OC frequency band of this community is at the high order end of whole system bandwidth or low order end, then detect from the one end being designated as the IC frequency band of 0 near HII the subband that HII is designated as the OC frequency band of 1 successively; And the subband of the OC frequency band met the demands is adjusted to IC frequency band, namely OC frequency band is reduced;
Total process that reduces is: determine that the OC frequency band of this community is when the high order end of whole system bandwidth or low order end, when the sub band number of the OC frequency band of this community is less than or equal to this community OC frequency band sub band number lower limit NRB
mintime, keep OC frequency bandwidth and the invariant position of this community;
When the sub band number of the OC frequency band of this community and the difference of OC frequency band sub band number lower limit are less than or equal to the adjustment step-length of setting, OC frequency band is reduced successively, until the sub band number of OC frequency band equals this community OC frequency band sub band number lower limit NRB after this cell reduction near IC frequency band one end in units of subband
min;
When the sub band number of the OC frequency band of this community and the difference of OC frequency band sub band number lower limit are greater than the adjustment step-length of setting, from the subband detecting OC frequency band near IC frequency band one end successively, when determining the adjacent area HII integrated information of subband
this subband is reduced from OC frequency band, until determine the adjacent area HII integrated information of next subband
or the sub band number of OC frequency band equals the adjustment step-length that OC frequency band sub band number lower limit or the sub band number that reduces equal 2 times after this cell reduction.
As shown in Figure 3A, for the OC frequency band of OC frequency band when the high order end of whole system bandwidth or low order end reduces schematic diagram; As shown in Figure 4 A, for the OC frequency band of OC frequency band when the high order end of whole system bandwidth or low order end reduces process flow diagram, comprising:
S401A: determine that the OC frequency band of this community is at the high order end of whole system bandwidth or low order end;
S402A, judge the sub band number N of current OC frequency band
hII=1≤ NRB
min, terminate when judged result is for being; Otherwise perform step S403A;
S403A, near HII be designated as one end of the IC frequency band of 0 detect the subband that HII is designated as the OC frequency band of 1, this subband is adjusted to IC frequency band from OC frequency band;
S404A, judge to adjust after the sub band number of OC frequency band whether meet N
hII=1=NRB
min, when judged result is for being, directly terminating, when judged result is no, performing step S405A;
S405A, judging whether the sub band number that OC frequency band reduces is less than adjustment step-length, when judged result is for being, returns step S403A, when judged result is no, performing step S406A;
S406A, continuation detect next subband, judge the adjacent area HII integrated information of this subband
whether meet
when judged result is for being, performs step S407A, when judged result is no, directly terminating;
S407A, this subband is adjusted to IC frequency band from OC frequency band;
S408A, judge to adjust after the sub band number of OC frequency band whether meet N
hII=1=NRB
min, when judged result is for being, directly terminating, when judged result is no, performing step S409A;
S409A, judge whether sub band number that OC frequency band reduces is less than the adjustment step-length of 2 times, when judged result is for being, returning step S406A, when judged result is no, directly terminating.
B, when the OC frequency band of this community is when the centre position of whole system bandwidth, then detect the subband of this OC frequency band successively from the two ends of this OC frequency band, and the subband of the OC frequency band met the demands is adjusted to IC frequency band, namely OC frequency band is reduced;
Total process that reduces is: determine that the OC frequency band of this community is when whole system bandwidth middle, prescribes a time limit, keeps OC frequency bandwidth and the invariant position of this community under the sub band number of the OC frequency band of this community is less than or equal to this community OC frequency band sub band number;
When the sub band number of the OC frequency band of this community and the difference of OC frequency band sub band number lower limit are less than or equal to the adjustment step-length of setting, the relatively subband at OC frequency band two ends, reduce the subband that adjacent area HII integrated information is larger successively, until the sub band number of OC frequency band after this cell reduction equals this community OC frequency band sub band number lower limit;
When the sub band number of the OC frequency band of this community and the difference of OC frequency band sub band number lower limit are greater than the adjustment step-length of setting, the relatively subband at OC frequency band two ends, reduce the subband that adjacent area HII integrated information is larger successively, until the sub band number reduced equals to adjust step-length, continue the adjacent area HII integrated information of the subband comparing OC frequency band two ends, determine the adjacent area HII integrated information of the subband that adjacent area HII integrated information is larger
this subband is reduced from OC frequency band, continues to compare, until determine the adjacent area HII integrated information of the subband that adjacent area HII integrated information is larger
or the sub band number of the OC frequency band after this cell reduction equals the adjustment step-length that OC frequency band sub band number lower limit or the sub band number that reduces equal 2 times.
As shown in Figure 3 B, for the OC frequency band of OC frequency band when whole system bandwidth middle reduces schematic diagram; As shown in Figure 4 B, for the OC frequency band of OC frequency band when whole system bandwidth middle reduces process flow diagram, comprising:
S401B, determine that the OC frequency band of this community is in the centre position of whole system bandwidth;
S402B, judge whether the sub band number of current OC frequency band meets N
hII=1≤ NRB
min, terminate when judged result is for being; Otherwise perform step S403B;
The subband of two OC frequency bands at S403B, contrast OC frequency band two ends, judges that whether the adjacent area HII integrated information of two subbands is equal, when judged result is for being, performs step S404B; When judged result is no, perform step S405B;
S404B, subband higher for this community OI information is adjusted to IC frequency band, perform step S406B;
In this step, for down link, because OI is the instruction of uplink interference overload, therefore any one subband can be adjusted to IC frequency band for the situation that the adjacent area HII integrated information of two subbands is equal, or the subband of left end or right-hand member is adjusted to IC frequency band by acquiescence;
S405B, subband larger for adjacent area HII integrated information is adjusted to IC frequency band;
The sub band number N of OC frequency band after S406B, judgement adjustment
hII=1=NRB
min, when judged result is for being, terminate; When judged result is no, perform step S407B;
S407B, judging whether the sub band number that OC frequency band reduces is less than adjustment step-length, when judged result is for being, returns step S403B, when judged result is no, performing step S408B;
The subband at S408B, contrast OC frequency band two ends, judges that whether the adjacent area HII integrated information of two subbands is all satisfied
when judged result is for being, terminate; When judged result is no, perform step S409B;
If there is one to meet in the adjacent area HII integrated information of S409B two subbands
judging that whether the adjacent area HII integrated information of two subbands is equal, when judged result is for being, performing step S410B; When judged result is no, perform step S411B;
S410B, subband higher for this community OI information is adjusted to IC frequency band;
Equally in this step, for down link, because OI is the instruction of uplink interference overload, therefore any one subband can be adjusted to IC frequency band for the situation that the adjacent area HII integrated information of two subbands is equal, or the subband of left end or right-hand member is adjusted to IC frequency band by acquiescence;
S411B, subband larger for adjacent area HII integrated information is adjusted to IC frequency band from OC frequency band;
S412B, judge whether the sub band number of OC frequency band after adjusting meets N
hII=1=NRB
min, when judged result is for being, terminate; When judged result is no, perform step S413B;
S413B, judging whether sub band number that OC frequency band reduces is less than the adjustment step-length of 2 times, when judged result is for being, returns step S408B, when judged result is no, terminating.
2, when the overall GBR of this community CEU meets state HIIGBRThr1>=T
gBR_CEU>=HIIGBRThr2, illustrates that the GBR of the CEU of this community meets state moderate, can not adjust when the pre-treatment moment, namely keeps OC frequency bandwidth and the invariant position of this community.
3, as 0 < T
gBR_CEU< HIIGBRThr2, illustrates that the overall GBR of the CEU of this community meets state very poor, can expand the frequency bandwidth of this community OC frequency band, that is expands the frequency band that HII is designated as 1.The length of concrete expansion and position will be considered according to the OI information of adjacent area HII integrated information and this community.
A, when the OC frequency band of this community is when the two ends of whole system bandwidth, then from the subband detecting IC frequency band near one end of OC frequency band successively, and the subband of the IC frequency band met the demands is adjusted to OC frequency band, namely OC frequency band is expanded;
Total expansion process is: determine that the OC frequency band of this community is at the high order end of whole system bandwidth or low order end; The subband of IC frequency band is detected successively, when determining the adjacent area HII integrated information of this subband from the one end near OC frequency band
time, this subband is increased to OC frequency band, until determine the adjacent area HII integrated information of next subband
or the adjacent area HII integrated information that expanding Hou Zhe community OC frequency band increases be not 0 sub band number equal to adjust step-length or expand Hou Zhe community OC frequency band the adjustment step-length that all sub band number of increasing equal 2 times.
As shown in Figure 5A, for the OC frequency band of OC frequency band when the high order end of whole system bandwidth or low order end expands schematic diagram; As shown in Figure 6A, be the OC frequency band expansion process flow chart of OC frequency band when the high order end of whole system bandwidth or low order end, comprise:
S601A, determine that the OC frequency band of this community is at the high order end of whole system bandwidth or low order end;
S602A, from the subband detecting IC frequency band near one end of OC frequency band successively, judge the adjacent area HII integrated information on this subband
whether meet
when judged result is for being, performs step S603A, when judged result is no, directly terminating;
S603A, this subband is adjusted to OC frequency band from IC frequency band;
S604A, judge the adjacent area HII integrated information increased in OC frequency band be not 0 sub band number whether be less than adjustment step-length, when judged result is for being, perform step S605A, when judged result is no, directly terminate;
S605A, judging whether all sub band number increased in OC frequency band are less than the adjustment step-length of 2 times, when judged result is for being, return step S602A, when judged result is no, directly terminating.
B, when the OC frequency band of this community is at whole system bandwidth middle, then detects the subband of IC frequency band from the two ends of OC frequency band successively, and the subband of the IC frequency band met the demands is adjusted to OC frequency band, namely OC frequency band is expanded;
Total expansion process is: determine that the OC frequency band of this community is in the centre of whole system bandwidth; The adjacent area HII integrated information of two subbands of the IC frequency band at contrast OC frequency band two ends, determines the adjacent area HII integrated information of the subband that adjacent area HII integrated information is less
this subband is adjusted to OC frequency band, continues the adjacent area HII integrated information of two subbands of the IC frequency band at contrast OC frequency band two ends, until determine the adjacent area HII integrated information of the subband that adjacent area HII integrated information is less
or the adjacent area HII integrated information that expanding Hou Zhe community OC frequency band increases be not 0 sub band number equal to adjust step-length or expand Hou Zhe community OC frequency band the adjustment step-length that all sub band number of increasing equal 2 times.
As shown in Figure 5 B, for the OC frequency band of OC frequency band when whole system bandwidth middle expands schematic diagram; As shown in Figure 6B, be the OC frequency band expansion process flow chart of OC frequency band when whole system bandwidth middle, comprise:
S601B, determine that the OC frequency band of this community is in the centre of whole system bandwidth;
The two ends of S602B, contrast OC frequency band, near two subbands of the IC frequency band of OC frequency band, judge in the adjacent area HII integrated information of two subbands, less whether the meeting of adjacent area HII integrated information
when judged result is for being, perform step S603B, when judged result is no, namely the adjacent area HII integrated information of two subbands is all satisfied
directly terminate;
S603B, this subband is adjusted to OC frequency band from IC frequency band;
If the adjacent area HII integrated information of two subbands is equal in step S602B, then the subband can choosing the OI information of this community less in this step adjusts to OC frequency band from IC frequency band;
When down link, if the adjacent area HII integrated information of two subbands is equal in step S602B, then can chooses any one subband and adjust to OC frequency band from IC frequency band in this step, or the subband of acquiescence left end or right-hand member adjusts to OC frequency band from IC frequency band;
S604B, judge the adjacent area HII integrated information increased in OC frequency band be not 0 sub band number whether be less than adjustment step-length, when judged result is for being, perform step S605B, when judged result is no, directly terminate;
S605B, judging whether all sub band number increased in OC frequency band are less than the adjustment step-length of 2 times, when judged result is for being, return step S602B, when judged result is no, directly terminating.
4, T is worked as
gBR_CEU=0;
If there is CEU this community, illustrates and not to be scheduled at the CEU of a upper trigger instants to this trigger instants Nei Zhe community, due to the restriction that OC frequency band reduces, so the sub band number of the OC frequency band of last time is not less than NRB
min, in this case, this does not carry out the adjustment of OC frequency bandwidth and position, namely keeps the OC frequency band of last time constant.
If this community does not have CEU, consider the UE having new access, due to the restriction that OC frequency band reduces, if the sub band number of the OC frequency band of last time is N
hII=1, old, then N
hII=1, old>=NRB
min, then the OC frequency band of this community is needed to narrow down to NRB
minindividual subband, the concrete process that reduces is:
A, when the OC frequency band of this community is at the high order end of whole system bandwidth or low order end, need detect successively from the one end near IC frequency band and reduce the subband of OC frequency band; As shown in Figure 7 A, be T
gBR_CEUthe OC frequency band of=0 Shi Zhe community OC frequency band when the high order end of whole system bandwidth or low order end reduces process flow diagram, and the concrete process that reduces is:
S701A, determine that the OC frequency band of this community is at the high order end of whole system bandwidth or low order end;
S702A, judge the sub band number N of current OC frequency band
hII=1≤ NRB
min, judged result is yes, directly terminates; Otherwise perform step S703A;
S703A: the subband reducing OC frequency band from the one end near IC frequency band successively, returns step S702A.
B, when the OC frequency band of this community is when the centre position of whole system bandwidth, then detect successively near the two ends of IC frequency band and reduce the subband of OC frequency band; As shown in Figure 7 B, be T
gBR_CEUthe OC frequency band of=0 Shi Zhe community OC frequency band when whole system bandwidth middle reduces process flow diagram, and the concrete process that reduces is:
S701B, determine that the OC frequency band of this community is in the centre position of whole system bandwidth;
S702B, judge the sub band number N of current OC frequency band
hII=1≤ NRB
cEUGBR, judged result is yes, directly terminates; Otherwise perform step S703B;
The subband at S703B, contrast OC frequency band two ends, adjusts to IC frequency band by subband larger for adjacent area HII integrated information, returns step S702B.
If the adjacent area HII integrated information of two subbands is equal in step S703B, then the subband can choosing the OI information of this community larger in this step adjusts to IC frequency band from OC frequency band;
When down link, if the adjacent area HII integrated information of two subbands is equal in step S703B, then can chooses any one subband and adjust to IC frequency band from OC frequency band in this step, or the subband of acquiescence left end or right-hand member adjusts to IC frequency band from OC frequency band;
The embodiment of the present invention also provides the adjusting device of the pre-indication information of a kind of high interference, as shown in Figure 8, comprising:
Adjacent area integrated information obtains module 81, and during the pre-indication information of the high interference for determining to receive all adjacent areas, this community, the adjacent area high interference obtaining each subband indicates integrated information in advance;
State reference value obtains module 82, when the trigger instants for determining to adjust this community OC frequency band arrives, determines to represent that the overall GBR of this Cell Edge User CEU meets the state reference value of state;
Adjusting module 83, for the OC frequency bandwidth and the position that indicate integrated information and state reference value to adjust this community according to adjacent area high interference in advance;
Generation module 84, for generating the pre-indication information of high interference of this community according to the OC frequency bandwidth after the adjustment of this community and position and send to each adjacent area.
The embodiment of the present invention only provides for LTE system the processing method that high interference indicates in advance, but the solution of the present invention is not limited in LTE system.
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 (13)
1. a method of adjustment for the pre-indication information of high interference, is characterized in that, comprising:
When the high interference of all adjacent areas, this community pre-indication information is determined to receive in base station, the adjacent area high interference obtaining each subband indicates integrated information in advance;
When the trigger instants adjusting this cell edge region OC frequency band arrives, determine to represent that the entirety of this Cell Edge User CEU ensures that bit rate GBR meets the state reference value of state;
Integrated information and state reference value is indicated to adjust OC frequency bandwidth and the position of this community in advance according to adjacent area high interference; Wherein, when determining that the OC frequency band of this community enough meets the demand of CEU according to state reference value, integrated information is indicated to be reduced by the OC frequency band of this community in advance in conjunction with adjacent area high interference, when determining that the OC frequency band of this community does not meet the demand of CEU according to state reference value, integrated information is indicated to be expanded by the OC frequency band of this community in advance in conjunction with adjacent area high interference;
Generate the pre-indication information of high interference of this community according to the OC frequency bandwidth after the adjustment of this community and position and send to each adjacent area.
2. the method for claim 1, is characterized in that, also comprises:
Base station does not receive adjacent area high interference when described trigger instants arrives indicates integrated information in advance, then obtain the pre-indication information of high interference of this community according to this community current OC frequency bandwidth and position.
3. the method for claim 1, is characterized in that, when determining the trigger instants arrival adjusting this community OC frequency band, determines to represent that the overall GBR of this Cell Edge User CEU meets the state reference value of state, specifically comprises:
When arriving trigger instants, statistically a trigger instants is to this trigger instants, the actual flow of each CEU of this community;
Determine state reference value
wherein, R
irepresent the actual flow of i-th CEU; GBR
irepresent all business GBR summations of i-th CEU; N
cEUrepresent the sum of CEU in this community; Wi represents the service priority weight of i-th CEU.
4. method as claimed in claim 3, is characterized in that, describedly indicates integrated information and state reference value to adjust OC frequency bandwidth and the position of this community in advance according to adjacent area high interference, is specially:
Work as T
gBR_CEU> HIPIGBRThr1, the sub band number of the OC frequency band of this community to be less than or equal under OC frequency band sub band number in limited time, keep OC frequency bandwidth and the invariant position of this community, otherwise, indicate integrated information reduce the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference;
As HIPIGBRThr1>=T
gBR_CEUduring>=HIPIGBRThr2, then keep OC frequency bandwidth and the invariant position of this community;
As 0 < T
gBR_CEUduring < HIPIGBRThr2, integrated information is indicated to increase the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference;
Work as T
gBR_CEUwhen=0, if there is CEU this community, then keep OC frequency bandwidth and the invariant position of this community, if this community does not have CEU, prescribe a time limit under the sub band number of the OC frequency band of this community is less than or equal to OC frequency band sub band number, keep OC frequency bandwidth and the invariant position of this community, otherwise, integrated information is indicated to reduce the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference, wherein, HIPIGBRThr1, HIPIGBRThr2 represent that the overall GBR of this community CEU meets first, second status threshold values of state.
5. method as claimed in claim 4, is characterized in that, work as T
gBR_CEUduring > HIPIGBRThr1, indicate integrated information reduce the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference, be specially:
When the OC frequency band of this community is at the high order end of whole system bandwidth or low order end;
When the sub band number of the OC frequency band of this community and the difference of OC frequency band sub band number lower limit are less than or equal to the adjustment step-length of setting, from reducing OC frequency band successively near IC frequency band one end in units of subband, until the sub band number of OC frequency band after this cell reduction equals OC frequency band sub band number lower limit;
When the sub band number of the OC frequency band of this community and the difference of OC frequency band sub band number lower limit are greater than the adjustment step-length of setting, from the subband detecting OC frequency band near IC frequency band one end successively, when determining that the adjacent area high interference of subband indicates integrated information in advance
this subband is reduced from OC frequency band, until determine that the adjacent area high interference of next subband indicates integrated information in advance
or the sub band number of OC frequency band equals the adjustment step-length that OC frequency band sub band number lower limit or the sub band number that reduces equal 2 times after this cell reduction.
6. method as claimed in claim 4, is characterized in that, work as T
gBR_CEUduring > HIPIGBRThr1, indicate integrated information reduce the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference, be specially:
When the OC frequency band of this community is in the centre of whole system bandwidth;
When the sub band number of the OC frequency band of this community and the difference of OC frequency band sub band number lower limit are less than or equal to the adjustment step-length of setting, the relatively subband at OC frequency band two ends, reduce adjacent area high interference successively and indicate the subband that integrated information is larger in advance, until the sub band number of OC frequency band after this cell reduction equals OC frequency band sub band number lower limit;
When the sub band number of the OC frequency band of this community and the difference of OC frequency band sub band number lower limit are greater than the adjustment step-length of setting, the relatively subband at OC frequency band two ends, reduce adjacent area high interference successively and indicate the subband that integrated information is larger in advance, until the sub band number reduced equals to adjust step-length, the adjacent area high interference continuing the subband comparing OC frequency band two ends indicates integrated information in advance, determines that adjacent area high interference indicates the adjacent area high interference of the larger subband of integrated information to indicate integrated information in advance in advance
this subband is reduced from OC frequency band, continues to compare, until determine that adjacent area high interference indicates the adjacent area high interference of the larger subband of integrated information to indicate integrated information in advance in advance
or the sub band number of the OC frequency band after this cell reduction equals the adjustment step-length that OC frequency band sub band number lower limit or the sub band number that reduces equal 2 times.
7. method as claimed in claim 4, is characterized in that, as 0 < T
gBR_CEUduring < HIPIGBRThr2, indicate integrated information expand the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference, be specially:
When the OC frequency band of this community is at the high order end of whole system bandwidth or low order end;
The subband of IC frequency band is detected successively, when determining that the adjacent area high interference of this subband indicates integrated information in advance from the one end near OC frequency band
time, this subband is increased to OC frequency band, until determine that the adjacent area high interference of next subband indicates integrated information in advance
or the adjacent area high interference that expanding Hou Zhe community OC frequency band increases indicate in advance integrated information be not 0 sub band number equal to adjust step-length or expand Hou Zhe community OC frequency band the adjustment step-length that all sub band number of increasing equal 2 times.
8. method as claimed in claim 4, is characterized in that, as 0 < T
gBR_CEUduring < HIPIGBRThr2, indicate integrated information expand the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference, be specially:
When the OC frequency band of this community is in the centre of whole system bandwidth;
The adjacent area high interference of two subbands of the IC frequency band that contrast OC frequency band two ends are adjacent indicates integrated information in advance, determines that adjacent area high interference indicates the adjacent area high interference of the less subband of integrated information to indicate integrated information in advance in advance
this subband is adjusted to OC frequency band, and the adjacent area high interference continuing two subbands of the adjacent IC frequency band in contrast OC frequency band two ends indicates integrated information, in advance until determine that adjacent area high interference indicates the adjacent area high interference of the less subband of integrated information to indicate integrated information in advance in advance
or the adjacent area high interference that expanding Hou Zhe community OC frequency band increases indicate in advance integrated information be not 0 sub band number equal to adjust step-length or expand Hou Zhe community OC frequency band the adjustment step-length that all sub band number of increasing equal 2 times.
9. method as claimed in claim 4, is characterized in that, work as T
gBR_CEUwhen=0, and this community does not have CEU, then indicate integrated information reduce the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference, be specially:
When the OC frequency band of this community is at the high order end of whole system bandwidth or low order end;
Prescribe a time limit under the sub band number of the OC frequency band of this community is greater than OC frequency band sub band number, in units of subband, reduce OC frequency band successively, until the sub band number of OC frequency band equals OC frequency band sub band number lower limit after this cell reduction from the one end near IC frequency band.
10. method as claimed in claim 4, is characterized in that, work as T
gBR_CEUwhen=0, and this community does not have CEU, then indicate integrated information reduce the OC frequency bandwidth of this community and adjust its position in advance according to adjacent area high interference, be specially:
When the OC frequency band of this community is in the centre of whole system bandwidth;
Prescribe a time limit under the sub band number of the OC frequency band of this community is greater than OC frequency band sub band number, contrast two subbands at OC frequency band two ends successively, the larger subband of integrated information is indicated to reduce in advance adjacent area high interference in two subbands, continue contrast, until the sub band number of OC frequency band after reducing equals OC frequency band sub band number lower limit.
11. as arbitrary in claim 1-10 as described in method, it is characterized in that, the adjacent area high interference obtaining one of them subband indicates integrated information specifically to comprise in advance: the result pre-indication information of each adjacent area high interference of this subband being weighted to summation is indicated integrated information in advance as the adjacent area high interference of this subband.
12. as arbitrary in claim 1-10 as described in method, it is characterized in that, for Long Term Evolution LTE system up link, the pre-indication information of described high interference is high interference instruction HII information; For Long Term Evolution LTE system down link, the pre-indication information of described high interference is Relative Narrowband TX Power RNTP information.
The adjusting device of 13. 1 kinds of pre-indication informations of high interference, is characterized in that, comprising:
Adjacent area integrated information obtains module, and during the pre-indication information of the high interference for determining to receive all adjacent areas, this community, the adjacent area high interference obtaining each subband indicates integrated information in advance;
State reference value obtains module, during for arriving when the trigger instants adjusting this community OC frequency band, determines to represent that the overall GBR of this Cell Edge User CEU meets the state reference value of state;
Adjusting module, for the OC frequency bandwidth and the position that indicate integrated information and state reference value to adjust this community according to adjacent area high interference in advance; Wherein, when determining that the OC frequency band of this community enough meets the demand of CEU according to state reference value, integrated information is indicated to be reduced by the OC frequency band of this community in advance in conjunction with adjacent area high interference, when determining that the OC frequency band of this community does not meet the demand of CEU according to state reference value, integrated information is indicated to be expanded by the OC frequency band of this community in advance in conjunction with adjacent area high interference;
Generation module, for generating the pre-indication information of high interference of this community according to the OC frequency bandwidth after the adjustment of this community and position and send to each adjacent area.
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| CN104780546B (en) * | 2014-01-15 | 2018-06-05 | 普天信息技术研究院有限公司 | A kind of method of dynamic interference coordination |
| CN103813347B (en) | 2014-02-28 | 2018-01-26 | 电信科学技术研究院 | A kind of base station frequency resource allocation method and the network equipment |
| CN106900050B (en) * | 2015-12-17 | 2020-01-31 | 普天信息技术有限公司 | downlink power processing method, processor and base station |
| CN108365907B (en) * | 2017-01-26 | 2020-12-25 | 中兴通讯股份有限公司 | Method and device for eliminating interference |
| CN109729534A (en) * | 2017-10-27 | 2019-05-07 | 普天信息技术有限公司 | One kind is the same as covering alien-frequency district generation method and device |
| CN109560890B (en) * | 2019-01-07 | 2021-10-22 | 武汉虹信科技发展有限责任公司 | Inter-cell dynamic interference coordination method and device |
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| EP1662834A1 (en) * | 2004-11-24 | 2006-05-31 | Siemens Mobile Communications S.p.A. | Dynamic channel selection based on interference and spectral usage in a multicarrier cellular communication system |
| CN101541088A (en) * | 2008-03-19 | 2009-09-23 | 中国移动通信集团公司 | Method, device and system for eliminating interference among cells |
| CN101635952A (en) * | 2008-07-21 | 2010-01-27 | 大唐移动通信设备有限公司 | Method and device for controlling congestion in mobile communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1662834A1 (en) * | 2004-11-24 | 2006-05-31 | Siemens Mobile Communications S.p.A. | Dynamic channel selection based on interference and spectral usage in a multicarrier cellular communication system |
| CN101541088A (en) * | 2008-03-19 | 2009-09-23 | 中国移动通信集团公司 | Method, device and system for eliminating interference among cells |
| CN101635952A (en) * | 2008-07-21 | 2010-01-27 | 大唐移动通信设备有限公司 | Method and device for controlling congestion in mobile communication system |
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