CN1992970A - Measurement control method of co-frequency district under LTE architecture - Google Patents

Abstract

The present invention relates to mobile communication technology, in particular to a method for measuring and controlling same-frequency cells under the LTE architecture, so as to solve the problem that the existing methods for measuring and controlling same-frequency cells cannot be applied to the LTE architecture. The method of the present invention includes: the network side sends the same-frequency cell measurement control message to the terminal, instructs the terminal to measure the signal quality of each adjacent cell respectively, and judges whether the signal quality of the adjacent cell is within a measurement time threshold, whether it lasts Equal to or better than the signal quality of the current serving cell plus a difference, if so, generate a measurement report and report to the network side according to the measurement results; otherwise end; the method can further include measuring whether the signal quality of the current serving cell continues to be higher than the set The highest threshold value, and/or whether it is continuously below the set minimum threshold value. The invention provides a feasible same-frequency cell measurement control method for the LTE architecture.

Description

A method for measuring and controlling same-frequency cells under the LTE framework

technical field

The invention relates to mobile communication technology, in particular to a method for measuring and controlling cells of the same frequency under the LTE framework.

Background technique

In the mobile communication system, due to the mobility of UE (User Equipment, user equipment) or other reasons, the system requires the UE to be able to switch between neighboring cells. The signal quality of the cell, that is, the signal quality of neighboring cells can be measured.

The current implementation of WCDMA (Wide-band Code Division Multiple Access, Wideband Code Division Multiple Access System) is shown in Figure 1. The UTRAN (UMTS Terrestrial Radio Access Network, UMTS Terrestrial Radio Access Network) on the network side sends measurement Control (MEASUREMENT CONTROL) message to standardize the UE's measurement behavior and measurement standards. The measurement control message includes the measurement quantity, measurement standard and trigger time that characterize the signal quality of the cell. The measurement quantity is generally path loss (Path loss), signal interference ratio (Ec/N0) or received signal code power (RSCPUE), and the UE reports the result meeting the measurement standard to the network side UTRAN in the form of a measurement report (MEASUREMENTREPROT). The measured value, the UTRAN on the network side records the candidate cell according to the measurement result reported by the UE, and makes a handover decision according to the condition of the candidate cell.

According to the different attributes of the source and destination cells involved in the handover process, there are three different handover types, such as intra-frequency, inter-frequency, and inter-system handover. Different handover types require the UE to adopt different measurement behaviors. Therefore, the measurement control message The content in the patent is also different due to the different switching types, that is, same-frequency measurement control, different-frequency measurement control, and different-system measurement control. The content of this patent mainly involves same-frequency measurement control.

In the existing WCDMA system, the same-frequency measurement control defines 1X series of events, which are 6 types of 1A events, 1B events, 1C events, 1D events, 1E events, and 1F events. The 6 events include different measurement standards. If UE During the measurement process, if a cell is found to meet the criteria specified in any of the above events, the event and the cell meeting the event will be reported through the measurement report. After the network receives the measurement report, it will enter the handover decision process. The evaluation of decides whether to give a toggle command. The meaning of the different events is described below:

1. Event 1A, used to discover candidate cells

During the measurement process, if the UE finds that the signal quality of a non-serving cell in the neighboring cell meets the 1A event duration and reaches or exceeds the trigger time, it will report the neighboring cell information to the network side through the measurement report;

For a certain cell, if the signal quality of the cell satisfies the 1A event, it means that the cell can be used as a candidate serving cell for the UE, and the cell is added as a candidate serving cell for the UE;

2. Event 1B, used to find and delete cells whose quality has degraded to the point where they can no longer be used

During the measurement process, if the UE finds that the signal quality of a certain cell in the current serving cell meets the 1B event duration and reaches or exceeds the trigger time, it will report the cell information to the network side through the measurement report;

For the current serving cell, if the signal quality of the cell meets the 1B event, it means that the signal quality of the cell is not suitable for use by the UE, and the cell needs to be deleted from the current cell used by the UE;

3. Event 1C, used to discover cells with better quality and replace serving cells with degraded signal quality

During the measurement process, if the UE finds that the signal quality of a certain cell in the neighboring cell meets the 1C event duration and reaches or exceeds the trigger time, it will report the cell information to the network side through the measurement report;

For the current serving cell, if the 1C event is met, it means that the cell can be replaced by another cell with better signal quality;

4. Event 1D, used to find the cell with the best signal quality

During the measurement process, if the UE finds that the signal quality of a certain cell in the adjacent cell meets the 1D event duration and reaches or exceeds the trigger time, it will report the cell information to the network side through the measurement report;

If the 1D event is satisfied, it means that the quality of the cell with the best signal quality currently used by the UE has changed and can be replaced by another cell with better signal quality, and the network side remarks the new cell with the best quality;

5. The 1E event is used to discover cells whose signal quality is higher than the highest absolute threshold among adjacent cells. Generally, such cells should be deleted from the candidate cells;

6. The 1F event is used to find a cell whose signal quality is lower than the lowest absolute threshold among adjacent cells, and generally such a cell should be deleted from the candidate cells.

Due to the macro-diversity technology adopted in the existing WCDMA system, the UE can use the resources of multiple cells at the same time. Therefore, 6 different event criteria can be used by the network to decide to add, delete or replace the cell resources being used by the UE. In the LTE (long-term evolution, long-term evolution of 3GPP) architecture, due to the cancellation of the macro-diversity technology, the UE can only use the resources of one cell at a time. Therefore, the existing same-frequency measurement control standards in the LTE architecture is no longer fully applicable.

Contents of the invention

The present invention provides a method for measuring and controlling same-frequency cells under the LTE framework to solve the problem that the existing measuring and controlling methods for same-frequency cells cannot be applied to the LTE framework.

The same-frequency cell measurement control method under a kind of LTE framework of the present invention comprises the following steps:

A. The network side sends the same-frequency cell measurement control message to the terminal, and the measurement control message includes the first indication information for instructing the terminal to measure whether the signal quality of the adjacent same-frequency cell meets the first measurement standard, the adjacent same-frequency cell Cell list, measurement time threshold and signal quality difference;

B. The terminal measures the signal quality of each adjacent cell separately according to the first measurement standard, and judges whether the signal quality of the adjacent cell is continuously equal to or better than the signal quality of the current serving cell plus the specified signal quality within a measurement time threshold The difference value, if yes, the terminal generates a measurement report according to the measurement result, and sends the measurement report to the network side; otherwise, it ends.

The first measurement standard specifically includes:

If the signal quality of the cell is determined by measuring the path loss, the path loss of the current serving cell minus the path loss measurement of the measured neighboring cell is greater than or equal to the difference;

If the signal quality of the cell is determined by measuring the signal-to-interference ratio or the received signal code power, the measured signal-to-interference ratio or received signal code power of the adjacent cell under test shall be correspondingly subtracted from the signal-to-interference ratio or received signal code power of the current serving cell to be greater than or equal to the specified value. stated difference.

The difference is specifically limited by the set adjacent cell offset parameter value and hysteresis parameter value.

When the measurement quantity is path loss, the first measurement standard is:

10LogM _NotServ +CIO _NotServ ≤10LogM _Serv -H _1a

Where: M _NotServ is the path loss of the measured cell;

CIO _NotServ is the cell offset CIO of the measured neighboring cell;

M _Serv is the path loss of the current serving cell;

H _1a is hysteresis;

When the measured quantity is signal-to-interference ratio or received signal code power, the first measurement standard is:

10LogM _NotServ +CIO _NotServ ≥10LogM _Serv +H _1a

Among them: M _NotServ is the signal-to-interference ratio or received signal code power of the measured adjacent cell;

CIO _NotServ is the CIO of the measured neighboring cell;

M _Serv is the signal-to-interference ratio or received signal code power of the current serving cell;

H _1a is hysteresis.

The method of the present invention may also include:

In the step A, the measurement control message further includes second indication information and a minimum signal quality threshold for instructing the terminal to measure whether the signal quality of the current serving cell meets the second measurement standard;

In the step B, the terminal simultaneously measures whether the signal quality of the current serving cell is continuously worse than the minimum threshold value within a measurement time threshold according to the second measurement standard, and if so, generates in the step C The measurement result of the second measurement standard is added to the measurement report of .

The second measurement standard specifically includes:

If the signal quality of the cell is determined by measuring the path loss, the path loss of the current serving cell is greater than or equal to the minimum threshold;

If the signal quality of the cell is determined by measuring the signal-to-interference ratio or received signal code power, then the signal-to-interference ratio or received signal code power of the current serving cell is less than or equal to the minimum threshold.

The minimum threshold value is specifically limited by setting an absolute threshold parameter value and a hysteresis parameter value.

When the measured quantity is path loss, the second measurement standard is:

10LogM _old +CIO _old ≥T _1b +H _1b /2

M _Old is the path loss of the signal when the measurement quantity of the measured adjacent cell is lower than the absolute threshold;

CIO _Old is the CIO when the measurement quantity of the measured adjacent cell is lower than the absolute threshold, otherwise, the value is 0;

T _1b is the absolute threshold;

H _1b is hysteresis;

When the measured quantity is signal-to-interference ratio or received signal code power, the second measurement standard is:

10LogM _Old +CIO _Old ≤T _1b -H _1b /2

M _Old is the signal-to-interference ratio or received signal code power when the measurement quantity of the measured cell is lower than the absolute threshold;

CIO _Old is the CIO when the measurement quantity of the measured cell is lower than the absolute threshold, otherwise, the value is 0;

T _1b is the absolute threshold;

H _1b is hysteresis.

The method of the present invention may further include:

In the step A, the measurement control message further includes third indication information and the highest signal quality threshold for instructing the terminal to measure whether the signal quality of the current serving cell meets the third measurement standard;

In the step B, the terminal simultaneously measures whether the signal quality of the current serving cell is continuously equal to or better than the highest threshold value within a measurement time threshold according to the third measurement standard, and if so, in the step C Add the measurement result of the third measurement standard to the measurement report generated in .

The third measurement standard specifically includes:

If the signal quality of the cell is determined by measuring the path loss, the path loss of the current serving cell is less than or equal to the highest threshold;

If the signal quality of the cell is determined by measuring the signal-to-interference ratio or received signal code power, then the signal-to-interference ratio or received signal code power of the current serving cell is greater than or equal to the highest threshold.

The minimum threshold value is specifically limited by setting an absolute threshold parameter value and a hysteresis parameter value.

The measurement control message includes a system measurement control message and a dedicated measurement control message;

The measurement report includes identification signals and signal quality information of adjacent intra-frequency cells meeting the first measurement standard.

The beneficial effects of the present invention are as follows:

The present invention mainly defines an event standard and a corresponding measurement control method that meet the requirements of the same-frequency handover under the LTE architecture by simplifying and synthesizing the existing measurement control standards. The same-frequency measurement control method described in the present invention considers The UE can only use the resources of one cell. Generally speaking, the number of adjacent cells is relatively small. Therefore, the trigger conditions for selecting candidate intra-frequency handover cells are appropriately relaxed and simplified, and the measurement behavior on the UE side is simplified. The handover control on the side provides a reliable basis, making the handover decision of the network more accurate and effective.

Description of drawings

Fig. 1 is a flow chart of WCDMA system switching;

FIG. 2 is a measurement control flow under the LTE architecture of the present invention.

Detailed ways

For the LTE architecture, since the UE can only use the resources of one cell at a time, the following factors need to be considered when performing the same-frequency cell measurement control:

1. Since the UE can only use the resources of one cell at the same time, it does not need to consider the handover control of using more than two cell resources at the same time, so the 1B event standard is deleted;

2. When referring to 1A and 1C events, since the UE can only use the resources of one cell, generally speaking, the number of adjacent cells is relatively small, so when selecting possible candidate handover target cells, the trigger conditions need to be appropriately relaxed and simplified;

3. When referring to 1D events, the current 1D events only select the neighbor cells with the best signal quality that meet the trigger conditions to report, while for the LTE architecture, all neighbor cells that meet the trigger conditions need to be reported for handover on the network side decision making;

4. Since more than two cells are no longer used at the same time, it is not necessary to consider the impact of a cell signal being too high on the signals of other cells being used. Therefore, the 1E event can be deleted. If it is required as a means of monitoring the signal quality of the cell, then may be considered for retention;

5. The 1F event should be reserved. Because only one cell can be used, the signal quality of the serving cell is more important. When the signal quality of the serving cell drops to the minimum threshold, blind handover should be performed immediately, and, considering The minimum threshold value of the present invention should be moderately higher than the minimum threshold value defined by the existing 1F event, so as to further ensure the security of the user connection.

Based on the above technical concepts, the 1x series of measurement standards applicable to the same-frequency measurement control of the LTE architecture proposed by the present invention mainly include two:

One is to select the trigger criteria for the same-frequency candidate cell, combine the existing 1A event, 1C event and 1D event, and moderately relax the conditions for triggering and reporting measurement reports, which can be defined as 1a event;

The second is the blind handover standard. When the signal quality of the serving cell exceeds the set maximum threshold or falls below the minimum threshold, the serving cell is urgently switched to another same-frequency cell with better signal quality. Refer to the existing IF event Set the minimum threshold value of cell signal quality, which can be defined as 1b event;

If the signal quality of the serving cell needs to be monitored, a third trigger standard can be set to report to the network side when the signal quality of the serving cell continues to be higher than the highest threshold within the trigger event, which can be defined as a 1c event.

A detailed description of each event follows:

1. Event 1a, used to measure the same-frequency candidate cell from the adjacent cell to be tested

The network side sends a measurement control message to the UE, which carries the measurement identification information of the same frequency cell, the information of the adjacent cell to be measured, the identification information of event 1a, the measurement amount information, and the signal quality difference between the current serving cell and the adjacent cell to be measured. value and trigger time, wherein, the cell to be tested is selected by the network side from neighboring cells of the current serving cell.

The UE is measuring the signal quality of all measured cells. If it finds that the signal quality of a measured cell meets the trigger condition of event 1a within the trigger time, it will write the information of the cell into the measurement report and report it to the network side. The network side Save this cell as the handover candidate cell of the UE. If there are multiple measured cells that meet the requirements within the trigger time, they will be reported at the same time. Therefore, the measurement report may carry one eligible cell or multiple cells, depending on the specific Measurement results are generated. If there is no measured cell meeting the trigger condition, no measurement report is reported.

The trigger condition of event 1a can be flexibly set according to specific network settings, service quality and empirical formulas. Generally speaking, the measurement quantity is path loss, and the path loss of the serving cell should be as small as possible. The measurement quantity is signal-to-interference ratio or acceptance When the signal code power is high, the bigger the better, considering the user's experience, it will switch only when the quality of the current serving cell drops to a certain level, it is not to follow the best cell to switch UE at any time, and only the measured cell When the signal quality of the cell is better than that of the current serving cell to a certain extent, the cell is used as a candidate cell. Therefore, when selecting a candidate cell, it is necessary to refer to the signal quality of the current serving cell. The specific trigger conditions of the measurement report are as follows:

The trigger condition where the measured quantity is path loss can be selected from Formula 1:

10LogM _NotServ +CIO _NotServ ≤10LogM _Serv -H _1a (1)

M _NotServ is the path loss of the measured cell;

CIO _NotServ is the CIO (Cell Individual Offset, cell offset) of the non-current serving cell;

M _Serv is the path loss of the current serving cell;

H _1a is hysteresis.

It can be seen from formula 1 that the path loss of the measured cell should first be smaller than the path loss of the current serving cell, and the difference between the path loss of the measured cell and the current serving cell should be greater than the bias value set by the system CIO _NotServ and Sum of hysteresis H. The offset value CIO _NotServ and hysteresis H are set according to the actual operation requirements of the system or experience values. If the conditions of candidate cells are to be expanded, the sum of CIO _NotServ and hysteresis H can be appropriately reduced when setting parameters.

The signal-to-interference ratio or received signal code power can be selected as the trigger condition in formula 2:

10LogM _NotServ +CIO _NotServ ≥10LogM _serv +H _1a (2)

M _NotServ is the signal-to-interference ratio or received signal code power of the measured cell;

CIO _NotServ is the CIO (Cell Individual Offset, cell offset) of the non-current serving cell;

M _Serv is the signal-to-interference ratio or received signal code power of the current serving cell;

H _1a is the hysteresis of the 1a event.

It can be seen from formula 2 that the signal-to-interference ratio or received signal code power of the measured cell should be greater than the signal-to-interference ratio or received signal code power of the current serving cell at first, and the signal-to-interference ratio or received signal code power of the measured cell and the current serving cell The difference between the number powers should be less than the system-set bias value hysteresis H _1a minus CIO _NotServ . The offset value CIO _NotServ and hysteresis H _1a are set according to the actual operating requirements or experience values of the system. If you want to expand the conditions of candidate cells, you can consider appropriately increasing the hysteresis H _1a minus CIO _NotServ when setting parameters. difference.

The network tester decides whether to execute the handover after comprehensively considering the current state of each cell according to the reported conditions of the candidate cells and the set handover judgment conditions.

2. Event 1b, used to monitor whether the signal quality of the current serving cell drops below the minimum threshold

When the UE measures that the signal quality of the current serving cell drops below the minimum threshold and lasts until the trigger time, the measurement report is reported to the network side, and the network side should immediately perform blind handover regardless of whether the candidate cell is suitable for handover, and handover the UE to it In a candidate cell, the trigger conditions are as follows:

The trigger condition where the measured quantity is path loss can be selected from formula 3:

10LogM _old +CIO _old ≥T _1b +H _1b /2 (3)

M _Old is the path loss of the signal when the measurement quantity of the measured cell is lower than the absolute threshold;

CIO _Old is the CIO when the measurement quantity of the measured cell is lower than the absolute threshold, otherwise, the value is 0;

T _1b is the absolute threshold;

H _1b is the 1b event hysteresis;

The signal-to-interference ratio or received signal code power can be selected as the trigger condition 4:

10LogM _Old +CIO _Old ≤T _1b -H _1b /2 (4)

M _Old is the signal-to-interference ratio or received signal code power when the measurement quantity of the measured cell is lower than the absolute threshold;

CIO _Old is the CIO when the measurement quantity of the measured cell is lower than the absolute threshold, otherwise, the value is 0;

T _1b is the absolute threshold;

H _1b is the 1b event hysteresis.

If the minimum threshold value under the LTE architecture is to be increased, in formula 3, the sum of parameters T _1b and H _1b is set slightly larger, and in formula 4, the difference between T _1b and H _1b is set slightly smaller, so that The minimum threshold value under the LTE architecture is higher than the minimum threshold value defined by the existing 1F event.

3. Event 1c, used to monitor the signal quality of the current serving cell

According to the set trigger standard, when the UE measures that the signal quality of the current serving cell is higher than the highest threshold value to the trigger time, the measurement report is reported to the network side, and the network side can be used as the analysis basis for the current state of the system. Limits are set according to the performance analysis requirements of a specific system.

The above-mentioned 1a event, 1b event and 1c event can be measured simultaneously in one measurement control, and a measurement report may include the measurement results of the three events, or one or two of them can be selected for measurement according to needs, and no limited.

The triggering criteria of the above-mentioned 1a event, 1b event and 1c event are preset on the terminal device. The network side carries the corresponding indication information in the measurement control message, and the terminal extracts the corresponding trigger condition according to the indication information and performs measurement.

The flow of the measurement control method is shown in Figure 2, wherein the handover control functional entity is not clearly defined in the existing LTE structure, and may be an enhanced NodeB (E-NodeB), or a central node, or a gateway GW. The same-frequency cell measurement control method described in the invention includes the following three steps:

S1. The handover control functional entity on the network side sends a measurement control message to the UE;

The measurement control message is a system broadcast message or a dedicated measurement control message, which includes the following information:

The command type of measurement control includes: establishment, modification or release. If it is an establishment command, the UE will start measurement; if it is a modification command, it will modify the current measurement event standard and measurement quantity; if it is a release command, it will stop the measurement;

Measurement control type, including same frequency, different frequency or different system;

The information in the intra-frequency measurement control mainly includes the list of non-serving cells and measurement quantities for UE to measure, and the indication information of the UE measurement standard, which includes all or part of the 1x series of trigger events and related parameters defined in the present invention, where: related Parameters include CIO _NotServ , H and trigger time;

S2. The UE measures whether the specified measurement quantity satisfies the corresponding trigger condition and reaches or exceeds the trigger time. If yes, execute step S3; otherwise, end;

For the 1a event, if there is a non-serving cell that satisfies formula 1 or formula 2 within the trigger time, it will be reported;

For 1b event, if there is a non-serving cell that satisfies formula 3 or formula 4 within the trigger time, report it;

For the 1c event, if it falls below the minimum threshold and reaches the trigger time, it will be reported;

After the UE has measured all the specified events, if there is a non-serving cell that meets the conditions, continue to step S3.

S3. The UE generates a measurement report according to the measurement result, and reports the non-serving cell (one or more) meeting the conditions to the handover control functional entity on the network side through the measurement report.

The measurement report during the handover process is reported because the UE has measured that a cell meets the standards defined in the measurement control. If it is caused by a 1x series of events, the type of the measurement report is an intra-frequency measurement report. The content of the measurement report includes that the type of the measurement report is intra-frequency, the measurement result includes the signal quality of all cells that the UE can measure, the event result includes the event type, and a list of cells that meet the event, etc.

After receiving the measurement report, the handover control functional entity saves the cell meeting the 1a event as an intra-frequency handover candidate cell, and immediately starts the blind handover if the current serving cell meets the 1b standard.

To sum up, the network side sends parameters such as measurement quantity, CIO of the non-serving cell, hysteresis, trigger time, and absolute threshold of 1f to the UE through the system broadcast message or dedicated measurement control message. resource connection) to start measurement after the connection is established, and report the non-serving cells (one or more) that meet the conditions to the network side through the measurement report, and the network side selects the most A suitable cell sends a handover command to the UE.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

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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