CN1992970A - Measurement control method of co-frequency district under LTE architecture - Google Patents
Measurement control method of co-frequency district under LTE architecture Download PDFInfo
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Abstract
The invention relates to a common-frequency region measurement control method at LTE structure, wherein said method comprises that: network sends common-frequency region measurement control message to the terminal, to instruct the terminal to measure the signal quality of each nearby region, and judge if said quality is under threshold value, and if it lasts at present signal quality added with one differential value, if it is, generating measurement report to be sent to network, or else, ending. The inventive method also can comprises that measuring present signal quality compared with maximum threshold value, and/or lower than minimum threshold value.
Description
Technical field
The present invention relates to mobile communication technology, the measurement control method of co-frequency district under particularly a kind of LTE framework.
Background technology
In mobile communication system, because UE (User Equipment, subscriber equipment) mobility or other reasons, system requirements UE can switch between adjacent cell, in order to realize switching smoothly, UE must perception before switching may become the signal quality of the sub-district of switching target, signal quality that promptly can measure neighbor cells.
Present WCDMA (Wide-band Code Division Multiple Access, WCDMA access system) implementation as shown in Figure 1, network side UTRAN (UMTS Terrestrial RadioAccess Network, UMTS Terrestrial radio access network) comes measurement behavior and the measurement standard of standard UE to the mode of UE sending measuring control (MEASUREMENT CONTROL) message, measure in the control message and comprise the measuring amount that characterizes the cell signal quality, measurement standard and triggered time, measuring amount is generally path loss (Path loss), signal interference ratio (Ec/N0) or letter of acceptance number power (RSCPUE), UE reports network side UTRAN with the result of coincidence measurement standard in the mode of measurement report (MEASUREMENTREPROT), comprise the cell ID of coincidence measurement standard and the measured value of measuring amount in the measurement report, network side UTRAN writes down alternative cell according to the measurement result that UE reports, and carries out switch decision according to the situation of alternative cell.
Difference according to source related in the handoff procedure, purpose cell attribute, have with three kinds of different switching types such as frequency, alien frequencies and the switchings of different system, different switching types requires UE to adopt different measurement behaviors, therefore, the content of measuring in the control messages also has corresponding difference because of the difference of switching type, be common frequency measurement control, different-frequency measure control and isosystem measurement control, the content of this patent relates generally to common frequency measurement control.
In existing WCDMA system, common frequency measurement control definition 1X chain of events, be respectively 6 kinds of 1A incident, 1B incident, 1C incident, 1D incident, 1E incident and 1F incidents etc., 6 kinds of incidents comprise different measurement standards, if UE finds have the sub-district to satisfy the standard of above-mentioned any incident defined in measuring process, the sub-district that reports this incident and satisfy this incident by measurement report then, network enters the switch decision process after receiving measurement report, whether provide switching command by the assessment decision to the sub-district in the measurement report.The implication of different event is described below:
1, incident 1A is used to find alternative cell
UE meets or exceeds the triggered time if find the duration that some non-service cell signal qualitys satisfy the 1A incident in the neighbor cell in measuring process, then this adjacent cell information is reported network side by measurement report;
For certain sub-district, if the signal quality of this sub-district satisfies the 1A incident, illustrate that this sub-district can be used as the alternative services sub-district of UE, increase the alternative services sub-district of this sub-district as UE;
2, incident 1B is used to find that quality drops to the sub-district and the deletion that can not re-use
UE meets or exceeds the triggered time if certain the cell signal quality in the discovery current service cell satisfies the duration of 1B incident in measuring process, then this cell information is reported network side by measurement report;
For current service cell, if the signal quality of this sub-district satisfies the 1B incident, illustrate that the signal quality discomfort of this sub-district is combined into the UE use, need this sub-district is deleted from the current use sub-district of UE;
3, incident 1C is used to find the sub-district of better quality and the Serving cell of the bad change of substitution signal quality
UE meets or exceeds the triggered time if find the duration that certain cell signal quality in the neighbor cell satisfies the 1C incident in measuring process, then this cell information is reported network side by measurement report;
For current service cell,, illustrate that this sub-district can be substituted by other the better sub-district of signal quality if satisfy the 1C incident;
4, incident 1D is used to the sub-district of finding that signal quality is best
UE meets or exceeds the triggered time if find the duration that certain cell signal quality in the neighbor cell satisfies the 1D incident in measuring process, then this cell information is reported network side by measurement report;
If satisfy the 1D incident, illustrate that change has taken place the quality of the sub-district that the presently used signal quality of UE is best, can be substituted by other the better sub-district of signal quality, network side marks new top-quality sub-district again;
5,1E incident is used for finding that the neighbor cell signal quality exceeds the sub-district of high absolute thresholding, generally this sub-district should be deleted from alternative cell;
6,1F incident is used for finding that the neighbor cell signal quality is lower than the sub-district of minimum absolute thresholding, generally also this sub-district should be deleted from alternative cell.
Because adopted grand diversity technique in the existing WCDMA system, UE can use the resource of a plurality of sub-districts simultaneously, therefore, 6 kinds of different event criteria can or be replaced the local resource that UE is using for network decision increase, deletion.And at LTE (long-term evolution, the Long Term Evolution of 3GPP) in the framework, owing to cancelled grand diversity technique, UE can only use the resource of a sub-district at one time, therefore, existing common frequency measurement control criterion can not be suitable fully in the LTE framework.
Summary of the invention
The invention provides the measurement control method of co-frequency district under a kind of LTE framework, to solve the problem that existing measurement control method of co-frequency district can't be applicable to the LTE framework.
Measurement control method of co-frequency district under a kind of LTE framework of the present invention comprises the steps:
A, network side issue co-frequency cell to terminal and measure control messages, comprise in the described measurement control messages that being used for indicating terminal measures adjacent common-frequency cell signal quality and whether satisfy first indication information of first measurement standard, the tabulation of adjacent co-frequency cell, Measuring Time threshold value and signal quality difference;
B, terminal are measured the signal quality of each neighbor cell respectively according to first measurement standard, and the signal quality of judgement neighbor cell is in a described Measuring Time threshold value, whether continue to be parity with or superiority over the current service cell signal quality and add the above difference, if then terminal generates measurement report according to measurement result, and measurement report is sent to network side; Otherwise finish.
Described first measurement standard specifically comprises:
If determine the cell signal quality by the measuring route loss, then the path loss of current service cell deducts the path loss measurement of tested neighbor cell more than or equal to described difference;
If determine the cell signal quality by measuring signal interference ratio or letter of acceptance number power, then the measurement signal interference ratio of tested neighbor cell or letter of acceptance number power correspondence deduct the signal interference ratio of current service cell or letter of acceptance number power more than or equal to described difference.
Described difference specifically limits by neighbor cell offset parameter value and the sluggish parameter value of setting.
When measuring amount was path loss, described first measurement standard was:
10LogM
NotServ+CIO
NotServ≤10LogM
Serv-H
1a
Wherein: M
NotServPath loss for tested sub-district;
CIO
NotServSub-district biasing CIO for tested neighbor cell;
M
ServPath loss for current service cell;
H
1aBe sluggishness;
When measuring amount was signal interference ratio or letter of acceptance number power, described first measurement standard was:
10LogM
NotServ+CIO
NotServ≥10LogM
Serv+H
1a
Wherein: M
NotServSignal interference ratio or letter of acceptance number power for tested neighbor cell;
CIO
NotServCIO for tested neighbor cell;
M
ServSignal interference ratio or letter of acceptance number power for current service cell;
H
1aBe sluggishness.
The method of the invention can also comprise:
In the described steps A, comprise also in the described measurement control messages that being used for indicating terminal measures second indication information and the signal quality minimum threshold whether the current service cell signal quality satisfies second measurement standard;
Among the described step B, terminal is measured the signal quality of current service cell in a described Measuring Time threshold value according to second measurement standard simultaneously, whether continue to be inferior to described minimum threshold, if then increase the measurement result of this second measurement standard in the measurement report that in described step C, generates.
Described second measurement standard specifically comprises:
If determine the cell signal quality by the measuring route loss, then the path loss of current service cell is more than or equal to described minimum threshold;
If determine the cell signal quality by measuring signal interference ratio or letter of acceptance number power, then the signal interference ratio of current service cell or letter of acceptance number power are smaller or equal to described minimum threshold.
Described minimum threshold specifically limits by an absolute thresholding parameter value and the sluggish parameter value of setting.
When measuring amount was path loss, described second measurement standard was:
10LogM
old+CIO
old≥T
1b+H
1b/2
M
OldBe lower than the path loss of absolute door time-limited signal for the measuring amount of tested neighbor cell;
CIO
OldFor the measuring amount of tested neighbor cell is lower than the CIO that absolute door is prescribed a time limit, otherwise this value is 0;
T
1bBe the absolute door limit value;
H
1bBe sluggishness;
When measuring amount was signal interference ratio or letter of acceptance number power, described second measurement standard was:
10LogM
Old+CIO
Old≤T
1b-H
1b/2
M
OldFor the measuring amount of tested sub-district is lower than signal interference ratio or the letter of acceptance number power that absolute door is prescribed a time limit;
CIO
OldFor the measuring amount of tested sub-district is lower than the CIO that absolute door is prescribed a time limit, otherwise this value is 0;
T
1bBe the absolute door limit value;
H
1bBe sluggishness.
The method of the invention further can also comprise:
In the described steps A, comprise also in the described measurement control messages that being used for indicating terminal measures the current service cell signal quality and whether satisfy the high threshold of the 3rd indication information of the 3rd measurement standard and signal quality;
Among the described step B, terminal is measured the signal quality of current service cell in a described Measuring Time threshold value according to the 3rd measurement standard simultaneously, whether continue to be parity with or superiority over described wealthy family limit value, if then increase the measurement result of the 3rd measurement standard in the measurement report that in described step C, generates.
Described the 3rd measurement standard specifically comprises:
If determine the cell signal quality by the measuring route loss, then the path loss of current service cell is smaller or equal to described wealthy family limit value;
If determine the cell signal quality by measuring signal interference ratio or letter of acceptance number power, then the signal interference ratio of current service cell or letter of acceptance number power are more than or equal to described wealthy family limit value.
Described minimum threshold specifically limits by an absolute thresholding parameter value and the sluggish parameter value of setting.
Described measurement control messages comprises systematic survey control messages and special measuring controlling message;
Comprise the adjacent co-frequency cell id signal and the signal quality information that satisfy described first measurement standard in the described measurement report.
Beneficial effect of the present invention is as follows:
The present invention mainly passes through the simplification of existing measurement control criterion and comprehensive, defined under a kind of LTE of meeting framework with frequently switching required event criteria and measure control method accordingly, common frequency measurement control method of the present invention considers that UE can only use the resource of a sub-district, in general the quantity of abutting subdistrict is less relatively, therefore exist, suitably relax and simplified the trigger condition of selecting the alternative switching cell of frequency together, simplified the measurement behavior of UE side, for the switching controls of network side provides reliable basis, the handover decisions that makes network is accurate and effective more.
Description of drawings
Fig. 1 is the switching flow figure of WCDMA system;
Fig. 2 is the measurement control flow under the LTE framework of the present invention.
Embodiment
For the LTE framework,, therefore when carrying out co-frequency cell measurement control, have following factor to need to consider because UE can only use the resource of a sub-district at one time:
1,, therefore do not need to consider to use simultaneously the switching controls of two above local resources, so deletion 1B event criteria because UE can only use the resource of a sub-district at one time;
During 2, with reference to 1A and 1C incident, because UE can only use the resource of a sub-district, in general the quantity of abutting subdistrict is less relatively, and therefore when selecting possible alternative switching target small area, trigger condition need suitably relax and simplify;
During 3, with reference to the 1D incident, present 1D incident is only selected best the reporting of signal quality in the neighbor cell that satisfies trigger condition, and for the LTE framework, then needs to report all neighbor cells that satisfy trigger condition to do the decision-making of switching for network side;
4, owing to use two above sub-districts no longer simultaneously, therefore needn't consider the too high influence of cell signal of certain use to other use cell signals, therefore the 1E incident can be deleted, and if desired as a kind of means of monitored cells signal quality, then can consider to keep;
5, the 1F incident then should keep, exactly because can only use a sub-district, therefore the quality of Serving cell signal quality is more important, when the Serving cell signal quality drops to minimum threshold, should carry out blind switching immediately, and, consider that minimum threshold of the present invention should appropriateness be higher than the minimum threshold that has the 1F event definition now, with the fail safe of further assurance user connection.
Based on above technical conceive, the 1x measurement series standard of the common frequency measurement control that is applicable to the LTE framework that the present invention proposes mainly comprises two:
One will have 1A incident, 1C incident and 1D incident now and merge processing for selecting the trigger criteria with the frequency alternative cell, and the appropriate condition that triggers reporting measurement reports of relaxing, and can be defined as the 1a incident;
It two is blind switching standards, surpass when setting wealthy family's limit value or being lower than minimum threshold at the signal quality of Serving cell, Serving cell is promptly switched to other better quality of signal co-frequency cells, with reference to having the minimum threshold that the IF incident is provided with the cell signal quality now, can be defined as the 1b incident;
The signal quality of Monitoring Service sub-district then can be provided with the 3rd trigger criteria if desired, and the report network side can be defined as the 1c incident when the Serving cell signal quality continues to be higher than wealthy family limit value in trigger event.
Being described in detail as follows of each incident:
1, incident 1a is used for measuring with the frequency alternative cell from neighbor cell to be measured
Network side is to UE sending measuring control messages, wherein carry co-frequency cell and measure the difference and the triggered time of signal quality between identification information, adjacent cell information to be measured, incident 1a identification information, measuring amount information, current service cell and the tested neighbor cell, wherein, sub-district to be measured is selected from the neighbor cell of current service cell by network side.
UE is at the signal quality of measuring all tested sub-districts, in the triggered time, satisfy the trigger condition of incident 1a if find the signal quality of some tested sub-districts, then the information of this sub-district is write and be reported to network side in the measurement report, network side is preserved this sub-district as the switching alternative cell of this UE, if a plurality of tested sub-districts are arranged in the triggered time simultaneously satisfies then reports simultaneously, therefore may carry a qualified sub-district in the measurement report, also may carry a plurality ofly, generate according to concrete measurement result.If do not meet the tested sub-district of trigger condition, reporting measurement reports not then.
The trigger condition of incident 1a can be according to concrete network settings, service quality and empirical equation are set flexibly, in general, measuring amount is a path loss, the path loss of Serving cell should be the smaller the better, when measuring amount is signal interference ratio or letter of acceptance number power, should be the bigger the better, consider user's susceptibility, unless just switch when the quality of current service cell drops to a certain degree, be not the UE of switching at any time that follows best cell, and, and the signal quality that has only tested sub-district is better than the current service cell signal and just this sub-district is used as alternative cell to a certain degree the time, need be when therefore selecting alternative cell with reference to the signal quality of current service cell, the concrete trigger condition of measurement report is exemplified below:
Measuring amount is that the trigger condition of path loss can be selected formula 1:
10LogM
NotServ+CIO
NotServ≤10LogM
Serv-H
1a (1)
M
NotServPath loss for tested sub-district;
CIO
NotServCIO (Cell Individual Offset, sub-district biasing) for non-current service cell;
M
ServPath loss for current service cell;
H
1aBe sluggishness.
Can see that from formula 1 path loss of tested sub-district at first should be less than the path loss of current service cell, and the difference between tested sub-district and the current service cell path loss should be greater than the bias CIO of default
NotServWith sluggish H sum.Bias CIO
NotServSet according to system's actual motion requirement or empirical value with sluggish H,, when setup parameter, can consider suitably to dwindle CIO if enlarge the condition of alternative cell
NotServWith sluggish H sum.
Signal interference ratio or letter of acceptance number power can be selected formula 2 in trigger condition:
10LogM
NotServ+CIO
NotServ≥10LogM
serv+H
1a (2)
M
NotServSignal interference ratio or letter of acceptance number power for tested sub-district;
CIO
NotServCIO (Cell Individual Offset, sub-district biasing) for non-current service cell;
M
ServSignal interference ratio or letter of acceptance number power for current service cell;
H
1aSluggishness for the 1a incident.
Can see from formula 2, the signal interference ratio of tested sub-district or letter of acceptance number power at first should be greater than the signal interference ratio or the letter of acceptance number power of current service cell, and the difference between tested sub-district and current service cell signal interference ratio or the letter of acceptance number power should be less than the sluggish H of the bias of default
1aDeduct CIO
NotServBias CIO
NotServWith sluggish H
1aSet according to system's actual motion requirement or empirical value,, when setup parameter, can consider suitably to increase sluggish H if enlarge the condition of alternative cell
1aDeduct CIO
NotServResulting difference.
Network is surveyed according to the alternative cell situation that reports, and after each sub-district current state of switch decision condition comprehensive consideration of setting, whether decision carries out switching.
2, incident 1b, whether the signal quality that is used to monitor current service cell drops to below the minimum threshold
The signal quality that measures current service cell as UE drops to when lasting till the triggered time below the minimum threshold, by measurement report report network side, no matter whether alternative cell is fit to switch network side, all should carry out blind switching immediately, UE is switched in one of them alternative cell, and trigger condition is exemplified below:
Measuring amount is that the trigger condition of path loss can be selected formula 3:
10LogM
old+CIO
old≥T
1b+H
1b/2 (3)
M
OldBe lower than the path loss of absolute door time-limited signal for the measuring amount of tested sub-district;
CIO
OldFor the measuring amount of tested sub-district is lower than the CIO that absolute door is prescribed a time limit, otherwise this value is 0;
T
1bBe the absolute door limit value;
H
1bBe 1b incident sluggishness;
Signal interference ratio or letter of acceptance number power can be selected formula 4 in trigger condition:
10LogM
Old+CIO
Old≤T
1b-H
1b/2 (4)
M
OldFor the measuring amount of tested sub-district is lower than signal interference ratio or the letter of acceptance number power that absolute door is prescribed a time limit;
CIO
OldFor the measuring amount of tested sub-district is lower than the CIO that absolute door is prescribed a time limit, otherwise this value is 0;
T
1bBe the absolute door limit value;
H
1bBe 1b incident sluggishness.
If improve minimum threshold under the LTE framework, then in the formula 3, parameter T
1bAnd H
1bIt is big slightly that sum is provided with, in the formula 4, and T
1bAnd H
1bDifference be provided with smaller slightly, make the minimum threshold the LTE framework under be higher than the minimum threshold that has the 1F event definition now.
3, incident 1c is used to monitor the signal quality of current service cell
According to the trigger criteria of setting, when the signal quality that measures current service cell as UE exceeds wealthy family limit value to the triggered time, by measurement report report network side, network side can be used as the analysis foundation of system's current state, and wealthy family limit value requires to set according to the performance evaluation of concrete system.
Above-mentioned 1a incident, 1b incident and 1c incident can be measured in one-shot measurement control simultaneously, then may comprise the measurement result of three kinds of incidents in measurement report, also can select one of them or two to measure as required, do not add qualification here.
The trigger criteria of above-mentioned 1a incident, 1b incident and 1c incident is preset on the terminal equipment, and network side is by carrying corresponding indication information in measuring control messages, and terminal is extracted corresponding triggering condition according to indication information and measured.
The flow process of measurement control method as shown in Figure 2, wherein, the switching control function entity is not clearly definition in existing LTE structure, can be enhancing property NodeB (E-NodeB), also can be Centroid, gateway GW in other words, measurement control method of co-frequency district of the present invention comprises following three steps:
The switching control function entity of S1, network side is to UE sending measuring control messages;
Measuring control messages is system broadcast message or special measuring controlling message, comprises following information in this message:
Measure the command type of control, comprising: set up, revise or discharge, if set up order, then UE begins to measure; If revise order, then revise current measurement event standard and measuring amount; If release command then stops to measure;
Measure control types, comprise with frequency, alien frequencies or different system;
Information spinner in the common frequency measurement control will comprise for the non-service cell tabulation of UE measurement and the indication information of measuring amount and UE measurement standard, this standard comprises the trigger event and the relevant parameter of all or part of 1x series that the present invention defines, and wherein: relevant parameter comprises CIO
NotServ, H and triggered time;
Whether S2, UE measure the specified measurement amount and satisfy corresponding trigger condition and meet or exceed the triggered time, if execution in step S3 then; Otherwise finish;
For the 1a incident,, then report if there is non-service cell in the triggered time, to satisfy formula 1 or formula 2;
For the 1b incident,, then report if there is non-service cell in the triggered time, to satisfy formula 3 or formula 4;
For the 1c incident, reach the triggered time then report if be lower than minimum threshold;
After UE measures all incidents of appointment,, then continue step S3 if by the non-service cell that satisfies condition.
S3, UE generate measurement report according to measurement result, the non-service cell (one or more) that satisfies condition are reported the switching control function entity of network side by measurement report.
Measurement report in the handoff procedure has measured the sub-district because of UE and satisfy to have measured in the control defined standard and report, if caused by the 1x chain of events, then the type of measurement report is a same-frequency measure reporting.The type that content in the measurement report comprises measurement report for frequently, measurement result comprise UE signal quality, the event result of all sub-districts that can measure comprise event type, and the cell list etc. that satisfies incident.
After the switching control function entity is received measurement report, the sub-district of satisfying the 1a incident is saved as with frequently switching alternative cell,, then start blind switching immediately if current service cell satisfies the 1b standard.
In sum, network side sends measuring amount by system broadcast message or special measuring controlling message to UE, the CIO of non-service cell, sluggish, parameters such as the absolute thresholding of triggered time and 1f spare, UE is at RRC (Radio resource connection, Radio Resource connects) begin to measure after connecting, and the non-service cell (one or more) that satisfies condition reported network side by measurement report, network side is according to the sub-district that reports in the measurement report, pick out optimal sub-district according to corresponding switch decision algorithm, sending switching command to UE.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1, the measurement control method of co-frequency district under a kind of LTE framework is characterized in that, comprises the steps:
A, network side issue co-frequency cell to terminal and measure control messages, comprise in the described measurement control messages that being used for indicating terminal measures adjacent common-frequency cell signal quality and whether satisfy first indication information of first measurement standard, the tabulation of adjacent co-frequency cell, Measuring Time threshold value and signal quality difference;
B, terminal are measured the signal quality of each neighbor cell respectively according to first measurement standard, and the signal quality of judgement neighbor cell is in a described Measuring Time threshold value, whether continue to be parity with or superiority over the current service cell signal quality and add the above difference, if then generate measurement report, and measurement report is sent to network side according to measurement result; Otherwise finish.
2, the method for claim 1 is characterized in that, described first measurement standard specifically comprises:
If determine the cell signal quality by the measuring route loss, then the path loss of current service cell deducts the path loss measurement of tested neighbor cell more than or equal to described difference;
If determine the cell signal quality by measuring signal interference ratio or letter of acceptance number power, then the measurement signal interference ratio of tested neighbor cell or letter of acceptance number power correspondence deduct the signal interference ratio of current service cell or letter of acceptance number power more than or equal to described difference.
3, method as claimed in claim 2 is characterized in that, described difference specifically limits by neighbor cell offset parameter value and the sluggish parameter value of setting.
4, method as claimed in claim 3 is characterized in that,
When measuring amount was path loss, described first measurement standard was:
10LogM
NotServ+CIO
NotServ≤10LogM
Serv-H
1a
Wherein: M
NotServPath loss for tested sub-district; CIO
NotServSub-district biasing CIO for tested neighbor cell; M
ServPath loss for current service cell; H
1aBe sluggishness;
When measuring amount was signal interference ratio or letter of acceptance number power, described first measurement standard was:
10LogM
NotServ+CIO
NotServ≥10LogMS
erv+H
1a
Wherein: M
NotServSignal interference ratio or letter of acceptance number power for tested sub-district; CIO
NotServCIO for tested neighbor cell; M
ServSignal interference ratio or letter of acceptance number power for current service cell; H
1aBe sluggishness.
5, the method for claim 1 is characterized in that,
In the described steps A, comprise also in the described measurement control messages that being used for indicating terminal measures second indication information and the signal quality minimum threshold whether the current service cell signal quality satisfies second measurement standard;
Among the described step B, terminal is measured the signal quality of current service cell in a described Measuring Time threshold value according to second measurement standard simultaneously, whether continue to be inferior to described minimum threshold, if then increase the measurement result of this second measurement standard in the measurement report that in described step C, generates.
6, method as claimed in claim 5 is characterized in that, described second measurement standard specifically comprises:
If determine the cell signal quality by the measuring route loss, then the path loss of current service cell is more than or equal to described minimum threshold;
If determine the cell signal quality by measuring signal interference ratio or letter of acceptance number power, then the signal interference ratio of current service cell or letter of acceptance number power are smaller or equal to described minimum threshold.
7, method as claimed in claim 6 is characterized in that, described minimum threshold specifically limits by absolute thresholding parameter value and the sluggish parameter value of setting.
8, method as claimed in claim 7 is characterized in that,
When measuring amount was path loss, described second measurement standard was:
10LogM
old+CIO
old≥T
1b+H
1b/2
Wherein: M
OldBe lower than the path loss of absolute door time-limited signal for the measuring amount of tested sub-district; CIO
OldFor the measuring amount of tested neighbor cell is lower than the CIO that absolute door is prescribed a time limit, otherwise this value is 0; T
1bBe the absolute door limit value; H
1bBe sluggishness;
When measuring amount was signal interference ratio or letter of acceptance number power, described second measurement standard was:
10LogM
Old+CIO
Old≤T
1b-H
1b/2
Wherein: M
OldFor the measuring amount of tested neighbor cell is lower than signal interference ratio or the letter of acceptance number power that absolute door is prescribed a time limit; CIO
OldFor the measuring amount of tested sub-district is lower than the CIO that absolute door is prescribed a time limit, otherwise this value is 0; T
1bBe the absolute door limit value; H
1bBe sluggishness.
9, as claim 1 or 4 described methods, it is characterized in that,
In the described steps A, comprise also in the described measurement control messages that being used for indicating terminal measures the current service cell signal quality and whether satisfy the high threshold of the 3rd indication information of the 3rd measurement standard and signal quality;
Among the described step B, terminal is measured the signal quality of current service cell in a described Measuring Time threshold value according to the 3rd measurement standard simultaneously, whether continue to be parity with or superiority over described wealthy family limit value, if then increase the measurement result of the 3rd measurement standard in the measurement report that in described step C, generates.
10, method as claimed in claim 9 is characterized in that, described the 3rd measurement standard specifically comprises:
If determine the cell signal quality by the measuring route loss, then the path loss of current service cell is smaller or equal to described wealthy family limit value;
If determine the cell signal quality by measuring signal interference ratio or letter of acceptance number power, then the signal interference ratio of current service cell or letter of acceptance number power are more than or equal to described wealthy family limit value.
11, method as claimed in claim 10 is characterized in that, described minimum threshold specifically limits by an absolute thresholding parameter value and the sluggish parameter value of setting.
12, the method for claim 1 is characterized in that, described measurement control messages comprises systematic survey control messages and special measuring controlling message; Comprise the adjacent co-frequency cell id signal and the signal quality information that satisfy described first measurement standard in the described measurement report.
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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009026814A1 (en) * | 2007-08-27 | 2009-03-05 | Huawei Technologies Co., Ltd. | A method of neighbor cell configuration, communication device and wireless terminal |
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