CN103139829A - Method, device and base station for dividing limbic users in long term evolution (LTE) system - Google Patents
Method, device and base station for dividing limbic users in long term evolution (LTE) system Download PDFInfo
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Abstract
The invention discloses a method, a device and a base station for dividing limbic users in a long term evolution (LTE) system. The method comprises that user equipment (UE) obtains downlink channel quality information through measuring a cell reference signal (CRS) and reports the downlink channel quality information to the base station; the base station obtains an attribute distinguishing parameter used for dividing corresponding UE attributes according to the channel quality information, and the base station divides attributes of the corresponding UE according to the attribute distinguishing parameter. By means of the method, the device and the base station, reporting times of interference coordination measuring reports among cells can be greatly reduced, and therefore empty-port wireless resources can be saved, and meanwhile, due to the fact that the UE does not need to report the measuring reports frequently, power of the UE can be saved to a certain extent.
Description
Technical field
The present invention relates to wireless communication technology field, carry out in particular to a kind of down-run survey amount of utilizing method, device and base station thereof that edge customer is divided in LTE (Long Term Evolution, Long Term Evolution) system.
Background technology
The LTE system will improve the performance of Cell Edge User as one of main target, and proposed much for how improving cell edge UE (User Equipment, subscriber equipment) the special technology solution of performance, ICIC (Inter-Cell Interference Coordination wherein, Inter-Cell Interference Coordination) introducing of technology is exactly for the co-channel interference that reduces between neighbor cell, thus the performances such as the throughput of raising edge customer and user satisfaction.
The ICIC that the LTE system supports very flexibly and various, there is multiple sorting technique in the difference according to considering angle and technical characterstic, for example according to the difference of coordinating object, the ICIC of LTE system support can be divided into time domain ICIC and frequency domain ICIC; It can be divided into FFR (Fractional Frequency Reuse, partial frequency multiplexing) and SFR (Soft Frequency Reuse, soft-frequency reuse) etc. according to frequency band division; It can be divided into static ICIC, semi-static ICIC and dynamic I CIC etc. according to the time granularity difference of coordinating, wherein static ICIC generally takes the frequency band division of fixing, thereby has limited to a certain extent the flexibility of scheduling; Semi-static ICIC is by realizing at the mutual load information separately of X2 interface, and relatively static ICIC is more accurate; Dynamic I CIC has more considered the scheduling strategy aspect, and is also more frequent and timely on the time, thereby comparatively complicated.And no matter take which kind of ICIC mode, the UE that usually will at first determine scheduling in the residential quarter is CCU (Cell Center User, Cell Center User) or CEU is (Cell Edge User, Cell Edge User), and adopt respectively different resource allocation policies according to the difference classification of CCU and CEU, thereby reach the purpose of ICIC.Therefore, the division of carrying out CCU and CEU is a basic premise realizing the ICIC effect.
In order to determine that UE is in the CEU of cell edge or is in the CCU at center, at present, the LTE system is by adopting the A3 reporting events to judge that UE is in cell edge or center of housing estate, when UE satisfies A3 affair report condition, just carry out reporting of measurement result to network, specific practice is to report as measuring amount with RSRP (Reference Signal Receive Power, Reference Signal Received Power), thereby be CCU or CEU to distinguish UE, determination methods is as follows:
If during RSRPn-RSRPs＞TH_offset+TH_hys=TH1, think that this UE enters cell edge, judge that this UE is CEU; If RSRPn-RSRPs＜TH_offset-TH_hys=TH2 thinks that UE leaves cell edge, judge that this UE is CCU.Wherein, RSRPn and RSRPs are respectively adjacent cell that UE measures and the Reference Signal Received Power RSRP of this residential quarter, TH_offset is the skew thresholding that sets in advance, and TH_hys is the sluggish thresholding that sets in advance, and TH1 and TH2 are the RSRP discrimination threshold that sets in advance.When the reportOnLeave territory of network side A3 event is set to TRUE, can think that the RSRP measurement report is for ICIC.
After network side was received the measurement result that this measurement event reports, network side just can be judged corresponding UE and be in cell edge or center of housing estate, and then this UE is adopted different resource allocation policy and disturbance coordination method.
In the LTE system, the measurement report that reports by said method is by RRC (Radio Resource Control, radio resource control) layer signaling carried, the key-course protocol stack as shown in Figure 1, the RRC signaling is positioned on the PDCP layer, measurement report needs through PDCP layer, rlc layer, the transmission until physics PHY layer is eated dishes without rice or wine of MAC layer from the rrc layer transmission, and then is transferred to the rrc layer of base station side equity.As seen, the transmission of RRC signaling need to consume idle wireless resource, and when determining specifically that in present base station UE belongs to CEU or CCU, general way is that the measuring amount that reports is arranged a discrimination threshold, when the discrimination threshold that arranges during lower than the actual threshold switched, can make UE report frequently the ICIC measurement report, thereby cause a large amount of wastes of idle wireless resource, also can greatly consume the electric power resource of UE simultaneously.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of and carries out method, device and the base station thereof that edge customer is divided in Long Term Evolution LTE system, and compared to existing technologies, it can save idle wireless resource.
In order to reach purpose of the present invention, the present invention realizes by the following technical solutions:
A kind ofly carry out the method that edge customer is divided in the LTE system, comprising:
User equipment (UE) obtains descending channel quality information by measuring CRS (Cell-specific Reference Signals, cell special reference), and it is reported to the base station;
Parameter is differentiated according to the attribute that described channel quality information obtains to divide corresponding user equipment (UE) attribute in the base station, and differentiates parameter according to this attribute and the user equipment (UE) of correspondence is carried out attribute divide.
Preferably, user equipment (UE) obtains descending channel quality information by the cell special reference CRS that measures current area or contain a plurality of neighbor cells outside current area.
Preferably, described channel quality information can adopt CQI (Channel Quality Indicator, channel quality indication) grade or MCS grade to be represented.
Preferably, the base station attribute that obtains to divide corresponding user equipment (UE) attribute according to described channel quality information is differentiated the method for parameter and is: parameter is differentiated in conjunction with the attribute that the current channel quality information that receives and historical channel quality information obtain to divide corresponding user equipment (UE) attribute in the base station.
Preferably, the base station obtains the described method of differentiating parameter in order to the attribute of dividing corresponding user equipment (UE) attribute and is: parameter will be differentiated as the attribute of respective user equipment UE from the channel quality indication grade CQI that user equipment (UE) gets in the base station.
Preferably, the base station is carried out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and is comprised:
The channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into Cell Center User CCU, otherwise, respective user equipment UE is divided into Cell Edge User CEU.
Preferably, the base station is carried out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and is comprised:
The channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into doubtful Cell Center User CCU, otherwise, respective user equipment UE is divided into doubtful Cell Edge User CEU;
Calculate the shared ratio value of described doubtful Cell Edge User CEU, when described ratio value is not 0, get its with the additional differentiation proportion threshold value that sets in advance among little person as the calculated factor of Cell Edge User CEU number, described calculated factor be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE), when the shared ratio value of described doubtful Cell Edge User CEU is 0, described additional differentiation proportion threshold value be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE).
Preferably, carry out institute in steps after, also comprise the steps:
The base station is divided result according to the Reference Signal Received Power RSRP information of the reported by user equipment UE that receives to the attribute of the user equipment (UE) of correspondence and is verified, when the user equipment (UE) that is divided into Cell Edge User CEU has reported Reference Signal Received Power RSRP information simultaneously, be verified, and user equipment (UE) that should correspondence is divided into Cell Edge User CEU; When the user equipment (UE) that is divided into Cell Edge User CEU did not report Reference Signal Received Power RSRP information, checking was not passed through, and user equipment (UE) that should correspondence is divided into Cell Center User CCU; Wherein, described user equipment (UE) all is pre-arranged and does not carry out reporting of Reference Signal Received Power RSRP information when being moved to center of housing estate by cell edge.
A kind ofly carry out the device that edge customer is divided in the LTE system, comprising:
Receiver module is used for obtaining from user equipment (UE) the channel quality information that reports, and wherein, user equipment (UE) obtains descending channel quality information and it is reported by measuring cell special reference CRS;
Decision-making module, the attribute that is used for obtaining to divide according to described channel quality information corresponding user equipment (UE) attribute is differentiated parameter, and differentiates parameter according to this attribute and the user equipment (UE) of correspondence is carried out attribute divide.
Preferably, user equipment (UE) obtains descending channel quality information and it is reported by the cell special reference CRS that measures current area or contain a plurality of neighbor cells outside current area.
Preferably, described channel quality information can adopt channel quality indicator (CQI) grade or MCS grade to be represented.
Preferably, the decision-making module attribute that obtains to divide corresponding user equipment (UE) attribute according to described channel quality information is differentiated the method for parameter and is: decision-making module is differentiated parameter in conjunction with the attribute that the current channel quality information that receives and historical channel quality information obtain to divide corresponding user equipment (UE) attribute.
Preferably, decision-making module obtains the described method of differentiating parameter in order to the attribute of dividing corresponding user equipment (UE) attribute and is: decision-making module will be differentiated parameter as the attribute of respective user equipment UE from the channel quality indication grade CQI that user equipment (UE) gets.
Preferably, decision-making module carries out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and comprises:
The channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into Cell Center User CCU, otherwise, respective user equipment UE is divided into Cell Edge User CEU.
Preferably, decision-making module carries out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and comprises:
The channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into doubtful Cell Center User CCU, otherwise, respective user equipment UE is divided into doubtful Cell Edge User CEU;
Calculate the shared ratio value of described doubtful Cell Edge User CEU, when described ratio value is not 0, get its with the additional differentiation proportion threshold value that sets in advance among little person as the calculated factor of Cell Edge User CEU number, described calculated factor be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE), when the shared ratio value of described doubtful Cell Edge User CEU is 0, described additional differentiation proportion threshold value be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE).
Preferably, described receiver module also is further used for receiving the Reference Signal Received Power RSRP information of reported by user equipment UE; Described decision-making module also is further used for according to described Reference Signal Received Power RSRP information, the attribute of the user equipment (UE) of correspondence being divided result and verifies, when the user equipment (UE) that is divided into Cell Edge User CEU has reported Reference Signal Received Power RSRP information simultaneously, be verified, and user equipment (UE) that should correspondence is divided into Cell Edge User CEU; When the user equipment (UE) that is divided into Cell Edge User CEU did not report Reference Signal Received Power RSRP information, checking was not passed through, and user equipment (UE) that should correspondence is divided into Cell Center User CCU; Wherein, described user equipment (UE) all is pre-arranged and does not carry out reporting of Reference Signal Received Power RSRP information when being moved to center of housing estate by cell edge.
A kind of base station, it comprises the device that edge customer is divided that carries out as above in the LTE system, described device comprises:
Receiver module is used for obtaining from user equipment (UE) the channel quality information that reports, and wherein, user equipment (UE) obtains descending channel quality information and it is reported by measuring cell special reference CRS;
Decision-making module, the attribute that is used for obtaining to divide according to described channel quality information corresponding user equipment (UE) attribute is differentiated parameter, and differentiates parameter according to this attribute and the user equipment (UE) of correspondence is carried out attribute divide.
Technical scheme by the invention described above can be found out, provided by the inventionly carry out method, device and the base station thereof that edge customer is divided in the LTE system, can utilize existing and more ripe channel quality measurement mechanism to carry out the division of edge customer, compared to existing technologies, can greatly reduce the number of times that reports of Inter-Cell Interference Coordination measurement report, thereby reach the effect of saving idle wireless resource, because user equipment (UE) need not frequently to carry out reporting of measurement report, can save to a certain extent thus the electric power of user equipment (UE) simultaneously.
Description of drawings
Fig. 1 is the protocol stack structure schematic diagram of LTE system chain of command, wherein, described eNB (evolved NodeB, evolved base station) be the base station of 3GPP protocol definition, described MME (Mobility Management Entity, close the key control node) be the pass key control node of 3GPP agreement LTE access network, it is responsible for location and the call process of the user equipment (UE) of idle pulley, comprises relaying;
Fig. 2 be the embodiment of the present invention provide carry out the method flow schematic diagram that edge customer is divided in the LTE system;
Fig. 3 be the embodiment of the present invention provide carry out the apparatus structure schematic diagram that edge customer is divided in the LTE system;
Fig. 4 is schematic diagram before and after the channel quality information sequence.
The realization of the object of the invention, functional characteristics and excellent effect are described further below in conjunction with specific embodiment and accompanying drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
Provided by the inventionly carry out method, device and base station thereof that edge customer divides be applicable to grand eNB (evolved base station) networking scene in the LTE system, the number of times that reports of Inter-Cell Interference Coordination measurement report be can greatly reduce, thereby user equipment (UE) electric power and idle wireless resource saved.
Particularly, as shown in Figure 2, the embodiment of the present invention provides a kind ofly carries out the method that edge customer is divided in the LTE system, and described method comprises following concrete steps:
S10, user equipment (UE) obtain descending channel quality information by measuring cell special reference CRS, and it are reported to the base station;
In this step, preferably, user equipment (UE) obtains descending channel quality information by the cell special reference CRS that measures current area or contain a plurality of neighbor cells outside current area, wherein, described channel quality information can adopt channel quality indicator (CQI) grade or MCS grade to be represented, for above-mentioned two kinds of different execution modes, wherein:
Mode one: the cell special reference CRS that user equipment (UE) is only measured current area obtains descending channel quality information, and described channel quality information is expressed as the channel quality indicator (CQI) grade reports to the base station, the method is suitable for static and semi-static ICIC mode;
Mode two: the cell special reference CRS that the user equipment (UE) measurement contains a plurality of neighbor cells outside current area obtains descending channel quality information, and described channel quality information is expressed as the channel quality indicator (CQI) grade reports to the base station, the method is suitable for dynamic I CIC mode.
S20, base station differentiate parameter according to the attribute that described channel quality information obtains to divide corresponding user equipment (UE) attribute, and differentiate parameter according to this attribute and the user equipment (UE) of correspondence is carried out attribute divide.
In this step, preferably, the method that the attribute that the base station obtains to divide corresponding user equipment (UE) attribute according to described channel quality information is differentiated parameter is: parameter is differentiated in conjunction with the attribute that the current channel quality information that receives and historical channel quality information obtain to divide corresponding user equipment (UE) attribute in the base station, wherein, parameter will be differentiated as the attribute of respective user equipment UE from the channel quality indication grade CQI that user equipment (UE) gets in the base station.
For example, process channel quality information obtained above the base station, obtains the final attribute differentiation parameter that is used for dividing user property.This step need to consider the specific configuration information that cell special reference CRS measures (such as: periodically, cycle size and time interval of measuring etc.), ICIC algorithm characteristic (static, semi-static, dynamic etc.), user's scheduling situation (such as the adjustment of needs consideration CQI etc.) and the descending various factorss such as transmission mode.Concrete processing method can for: directly the channel quality indication grade CQI of reported by user equipment UE processed, the specific configuration information, ICIC algorithm characteristic, the user that consider cell special reference CRS measurement dispatch the factors such as situation and downlink transfer pattern, can adopt instantaneous channel quality indication grade CQI value to differentiate parameter as the attribute of division of cells edge customer CEU or Cell Center User CCU.
In actual application, because the channel quality of user equipment (UE) is constantly to change, therefore in the attribute of reality is differentiated the parameter acquisition process, the base station obtains to divide the attribute differentiation parameter CQI_f of corresponding user equipment (UE) attribute in conjunction with the current channel quality information that receives and historical channel quality information, for example when the quantity of user equipment (UE) is 100, the attribute of each user equipment (UE) that obtains is by the way differentiated parameter can be designated as { CQI_fi, i=1,2, ..., 99}.
Under a kind of preferred implementation, the base station is carried out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and is comprised:
The channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into Cell Center User CCU, otherwise, respective user equipment UE is divided into Cell Edge User CEU.
For example, attribute for each user equipment (UE) of above-mentioned acquisition is differentiated parameter { CQI_fi, i=1,2, ..., 99} can divide the attribute of each user equipment (UE) according to following method step, be Cell Center User CCU or Cell Edge User CEU thereby distinguish each user equipment (UE), as follows:
1, as shown in Figure 4, at first to the attribute corresponding with each user equipment (UE) that obtains differentiate parameter CQI_fi, i=1,2 ..., 99} sorts according to magnitude relationship;
2, adopt certain strategy to differentiate parameter according to the attribute of each user equipment (UE) obtained above and carry out the division of Cell Edge User CEU or Cell Center User CCU, concrete grammar is:
Set in advance channel quality discrimination threshold CQI_TH, when the attribute of the user equipment (UE) that measures is differentiated parameter more than or equal to this channel quality discrimination threshold CQI_TH, thinking that this user channel quality is better, is Cell Center User CCU with the user equipment (UE) setup of attribute; Differentiating parameter lower than this threshold value thresholding when the attribute that user equipment (UE) measures, think that the channel quality of this user equipment (UE) is relatively poor, is Cell Edge User CEU with the user equipment (UE) setup of attribute.Wherein, described channel quality discrimination threshold CQI_TH can safeguard separately by each base station in system, also can be by O﹠amp; M arranges.
Under more preferred another kind of execution mode, the base station is carried out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and is comprised:
(1) the channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into doubtful Cell Center User CCU, otherwise, respective user equipment UE is divided into doubtful Cell Edge User CEU;
(2) calculate the shared ratio value of described doubtful Cell Edge User CEU, when described ratio value is not 0, get its with the additional differentiation proportion threshold value that sets in advance among little person as the calculated factor of Cell Edge User CEU number, described calculated factor be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE), when the shared ratio value of described doubtful Cell Edge User CEU is 0, described additional differentiation proportion threshold value be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE).
For example, in this step, the additional proportion threshold value X% that differentiates is set, wherein, X ∈ [0,100].The shared ratio value of described doubtful Cell Edge User CEU that calculates is designated as Y%.The value of X% and Y% relatively, with the attribute after sequence differentiate parameter CQI_fi, i=1,2 ..., 99} is handled as follows according to following formula:
At this moment, when described ratio value is not 0, get its with the additional differentiation proportion threshold value that sets in advance among little person as the calculated factor of Cell Edge User CEU number, described calculated factor be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE), when the shared ratio value of described doubtful Cell Edge User CEU is 0, described additional differentiation proportion threshold value be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE).Wherein, described additional differentiation proportion threshold value X% can arrange flexibly according to load and the service conditions of system.And analyze two kinds of extreme cases here:
The first, the signal quality that is each user equipment (UE) in the residential quarter is all fine, be the shared ratio value Y%=0% of doubtful Cell Edge User CEU, the user equipment (UE) attribute division methods that provides according to above-mentioned the first execution mode can directly be set to Cell Center User CCU with this part user equipment (UE), and to be on the safe side, prevent from certain interference is caused in the adjacent area, can force to arrange a certain proportion of Cell Edge User CEU according to the family equipment UE attribute division methods that present embodiment provides.
The second, be the channel quality of all user equipment (UE)s of certain residential quarter all be worse than setting threshold value (at this moment, Y%=100%), at this moment, the user that the family equipment UE attribute division methods that provides according to present embodiment can force certain proportion X% is set is as Cell Edge User CEU, and other users are as Cell Center User CCU.
Carry out according to what the embodiment of the present invention provided the method that edge customer is divided in the LTE system, after carrying out above-mentioned steps S10 and S20, also comprise the steps:
S30, base station are divided result according to the Reference Signal Received Power RSRP information of the reported by user equipment UE that receives to the attribute of the user equipment (UE) of correspondence and are verified, when the user equipment (UE) that is divided into Cell Edge User CEU has reported Reference Signal Received Power RSRP information simultaneously, be verified, and user equipment (UE) that should correspondence is divided into Cell Edge User CEU; When the user equipment (UE) that is divided into Cell Edge User CEU did not report Reference Signal Received Power RSRP information, checking was not passed through, and user equipment (UE) that should correspondence is divided into Cell Center User CCU; Wherein, described user equipment (UE) all is pre-arranged and does not carry out reporting of Reference Signal Received Power RSRP information when being moved to center of housing estate by cell edge.
As shown in Figure 3, the embodiment of the present invention also provides a kind of device 20 that edge customer is divided that carries out in the LTE system, and described device 20 comprises:
Decision-making module 202, the attribute that is used for obtaining to divide according to described channel quality information corresponding user equipment (UE) 10 attributes is differentiated parameter, and differentiates parameter according to this attribute and the user equipment (UE) 10 of correspondence is carried out attribute divide.
Wherein, the method that the attribute that decision-making module 202 obtains to divide corresponding user equipment (UE) 10 attributes according to described channel quality informations is differentiated parameter is: decision-making module 202 is differentiated parameter in conjunction with the attribute that the current channel quality information that receives and historical channel quality information obtain to divide corresponding user equipment (UE) 10 attributes, more specifically, decision-making module 202 will be differentiated parameter as the attribute of respective user equipment UE10 from the channel quality indication grade CQI that user equipment (UE) 10 gets.
Under a kind of execution mode, decision-making module 202 carries out to the user equipment (UE) 10 of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and comprises:
The channel quality indication grade CQI that respective user equipment UE10 is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE10 is divided into Cell Center User CCU, otherwise, respective user equipment UE10 is divided into Cell Edge User CEU.
Before carrying out above-mentioned steps, described decision-making module 202 also is used for channel quality indication grade CQI is sorted according to size order.
Under another kind of execution mode, decision-making module 202 carries out to the user equipment (UE) 10 of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and comprises:
1, the channel quality indication grade CQI that respective user equipment UE10 is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE10 is divided into doubtful Cell Center User CCU, otherwise, respective user equipment UE10 is divided into doubtful Cell Edge User CEU;
2, calculate the shared ratio value of described doubtful Cell Edge User CEU, when described ratio value is not 0, get its with the additional differentiation proportion threshold value that sets in advance among little person as the calculated factor of Cell Edge User CEU number, described calculated factor be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE) 10, when the shared ratio value of described doubtful Cell Edge User CEU is 0, described additional differentiation proportion threshold value be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE) 10.
Similarly, before carrying out above-mentioned steps, described decision-making module 202 also is used for channel quality indication grade CQI is sorted according to size order.
In addition, described receiver module 201 also is further used for receiving the Reference Signal Received Power RSRP information that user equipment (UE) 10 reports; Described decision-making module 202 also is further used for according to described Reference Signal Received Power RSRP information, the attribute of the user equipment (UE) 10 of correspondence being divided result and verifies, when the user equipment (UE) 10 that is divided into Cell Edge User CEU has reported Reference Signal Received Power RSRP information simultaneously, be verified, and user equipment (UE) 10 that should correspondence is divided into Cell Edge User CEU; When the user equipment (UE) 10 that is divided into Cell Edge User CEU did not report Reference Signal Received Power RSRP information, checking was not passed through, and user equipment (UE) 10 that should correspondence is divided into Cell Center User CCU; Wherein, described user equipment (UE) 10 all is pre-arranged and does not carry out reporting of Reference Signal Received Power RSRP information when being moved to center of housing estate by cell edge.
The embodiment of the present invention also provides a kind of base station, and described base station comprises the device 20 that edge customer is divided that carries out as above in the LTE system, continue with reference to Fig. 3, and described device 20 comprises:
Decision-making module 202, the attribute that is used for obtaining to divide according to described channel quality information corresponding user equipment (UE) 10 attributes is differentiated parameter, and differentiates parameter according to this attribute and the user equipment (UE) 10 of correspondence is carried out attribute divide.
The further description of carrying out the device 20 that edge customer divides in the LTE system that comprises for described base station, can carry out the method that edge customer divides and install 20 relevant explanation in the LTE system in conjunction with above relevant, here it no longer be repeated to give unnecessary details.
Provided by the inventionly carry out method, device and the base station thereof that edge customer is divided in the LTE system, can utilize existing and more ripe channel quality measurement mechanism to carry out the division of edge customer, compared to existing technologies, can greatly reduce the number of times that reports of Inter-Cell Interference Coordination measurement report, thereby reach the effect of saving idle wireless resource, because user equipment (UE) 10 need not frequently to carry out reporting of measurement report, can save to a certain extent thus the electric power of user equipment (UE) 10 simultaneously.
The above is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (17)
1. one kind is carried out the method that edge customer is divided in the LTE system, it is characterized in that, comprising:
User equipment (UE) obtains descending channel quality information by measuring cell special reference CRS, and it is reported to the base station;
Parameter is differentiated according to the attribute that described channel quality information obtains to divide corresponding user equipment (UE) attribute in the base station, and differentiates parameter according to this attribute and the user equipment (UE) of correspondence is carried out attribute divide.
2. as claimed in claim 1ly carry out the method that edge customer is divided in the LTE system, it is characterized in that, user equipment (UE) obtains descending channel quality information by the cell special reference CRS that measures current area or contain a plurality of neighbor cells outside current area.
3. as claimed in claim 1 or 2ly carry out the method that edge customer is divided in the LTE system, it is characterized in that, described channel quality information can adopt channel quality indicator (CQI) grade or MCS grade to be represented.
4. as claimed in claim 3ly carry out the method that edge customer is divided in the LTE system, it is characterized in that, the method that the attribute that the base station obtains to divide corresponding user equipment (UE) attribute according to described channel quality information is differentiated parameter is: parameter is differentiated in conjunction with the attribute that the current channel quality information that receives and historical channel quality information obtain to divide corresponding user equipment (UE) attribute in the base station.
5. as claimed in claim 3ly carry out the method that edge customer is divided in the LTE system, it is characterized in that, the base station obtains the described method of differentiating parameter in order to the attribute of dividing corresponding user equipment (UE) attribute and is: parameter will be differentiated as the attribute of respective user equipment UE from the channel quality indication grade CQI that user equipment (UE) gets in the base station.
6. as claimed in claim 5ly carry out the method that edge customer is divided in the LTE system, it is characterized in that, the base station is carried out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and is comprised:
The channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into Cell Center User CCU, otherwise, respective user equipment UE is divided into Cell Edge User CEU.
7. as claimed in claim 5ly carry out the method that edge customer is divided in the LTE system, it is characterized in that, the base station is carried out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and is comprised:
The channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into doubtful Cell Center User CCU, otherwise, respective user equipment UE is divided into doubtful Cell Edge User CEU;
Calculate the shared ratio value of described doubtful Cell Edge User CEU, when described ratio value is not 0, get its with the additional differentiation proportion threshold value that sets in advance among little person as the calculated factor of Cell Edge User CEU number, described calculated factor be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE), when the shared ratio value of described doubtful Cell Edge User CEU is 0, described additional differentiation proportion threshold value be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE).
8. as claimed in claim 1ly carry out the method that edge customer is divided in the LTE system, it is characterized in that, carry out institute in steps after, also comprise the steps:
The base station is divided result according to the Reference Signal Received Power RSRP information of the reported by user equipment UE that receives to the attribute of the user equipment (UE) of correspondence and is verified, when the user equipment (UE) that is divided into Cell Edge User CEU has reported Reference Signal Received Power RSRP information simultaneously, be verified, and user equipment (UE) that should correspondence is divided into Cell Edge User CEU; When the user equipment (UE) that is divided into Cell Edge User CEU did not report Reference Signal Received Power RSRP information, checking was not passed through, and user equipment (UE) that should correspondence is divided into Cell Center User CCU; Wherein, described user equipment (UE) all is pre-arranged and does not carry out reporting of Reference Signal Received Power RSRP information when being moved to center of housing estate by cell edge.
9. one kind is carried out the device that edge customer is divided in the LTE system, it is characterized in that, comprising:
Receiver module is used for obtaining from user equipment (UE) the channel quality information that reports, and wherein, user equipment (UE) obtains descending channel quality information and it is reported by measuring cell special reference CRS;
Decision-making module, the attribute that is used for obtaining to divide according to described channel quality information corresponding user equipment (UE) attribute is differentiated parameter, and differentiates parameter according to this attribute and the user equipment (UE) of correspondence is carried out attribute divide.
10. as claimed in claim 9ly carry out the device that edge customer is divided in the LTE system, it is characterized in that, user equipment (UE) obtains descending channel quality information and it is reported by the cell special reference CRS that measures current area or contain a plurality of neighbor cells outside current area.
11. as describedly in claim 9 or 10 carry out the device that edge customer is divided in the LTE system, it is characterized in that, described channel quality information can adopt channel quality indicator (CQI) grade or MCS grade to be represented.
12. as claimed in claim 11ly carry out the device that edge customer is divided in the LTE system, it is characterized in that, the method that the attribute that decision-making module obtains to divide corresponding user equipment (UE) attribute according to described channel quality information is differentiated parameter is: decision-making module is differentiated parameter in conjunction with the attribute that the current channel quality information that receives and historical channel quality information obtain to divide corresponding user equipment (UE) attribute.
13. as claimed in claim 12ly carry out the device that edge customer is divided in the LTE system, it is characterized in that, decision-making module obtains the described method of differentiating parameter in order to the attribute of dividing corresponding user equipment (UE) attribute and is: decision-making module will be differentiated parameter as the attribute of respective user equipment UE from the channel quality indication grade CQI that user equipment (UE) gets.
14. as claimed in claim 13ly carry out the device that edge customer is divided in the LTE system, it is characterized in that, decision-making module carries out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and comprises:
The channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into Cell Center User CCU, otherwise, respective user equipment UE is divided into Cell Edge User CEU.
15. as claimed in claim 12ly carry out the device that edge customer is divided in the LTE system, it is characterized in that, decision-making module carries out to the user equipment (UE) of correspondence the treatment step that attribute divides according to channel quality indication grade CQI and comprises:
The channel quality indication grade CQI that respective user equipment UE is reported compares with the channel quality discrimination threshold that sets in advance, when its channel quality is indicated grade CQI more than or equal to this channel quality discrimination threshold, respective user equipment UE is divided into doubtful Cell Center User CCU, otherwise, respective user equipment UE is divided into doubtful Cell Edge User CEU;
Calculate the shared ratio value of described doubtful Cell Edge User CEU, when described ratio value is not 0, get its with the additional differentiation proportion threshold value that sets in advance among little person as the calculated factor of Cell Edge User CEU number, described calculated factor be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE), when the shared ratio value of described doubtful Cell Edge User CEU is 0, described additional differentiation proportion threshold value be multiply by the number of the total number acquisition Cell Edge User CEU of user equipment (UE).
16. as claimed in claim 9ly carry out the device that edge customer is divided in the LTE system, it is characterized in that, described receiver module also is further used for receiving the Reference Signal Received Power RSRP information of reported by user equipment UE; Described decision-making module also is further used for according to described Reference Signal Received Power RSRP information, the attribute of the user equipment (UE) of correspondence being divided result and verifies, when the user equipment (UE) that is divided into Cell Edge User CEU has reported Reference Signal Received Power RSRP information simultaneously, be verified, and user equipment (UE) that should correspondence is divided into Cell Edge User CEU; When the user equipment (UE) that is divided into Cell Edge User CEU did not report Reference Signal Received Power RSRP information, checking was not passed through, and user equipment (UE) that should correspondence is divided into Cell Center User CCU; Wherein, described user equipment (UE) all is pre-arranged and does not carry out reporting of Reference Signal Received Power RSRP information when being moved to center of housing estate by cell edge.
17. a base station is characterized in that, comprises the described device that edge customer is divided that carries out in the LTE system as arbitrary in claim 9-16.
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| CN103139829B (en) | 2018-09-07 |
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