WO2016165267A1 - Cell reselection method and apparatus, and terminal - Google Patents

Abstract

Disclosed is a cell reselection method. A terminal determines, according to a randomization algorithm, a cell reselection signal offset, and measures and/or judges cell reselection using the cell reselection signal offset. Also disclosed are a cell reselection apparatus and a terminal.

Description

Cell reselection method, device and terminal Technical field

The present invention relates to wireless communication technologies, and in particular, to a cell reselection method, apparatus, and terminal.

Background technique

Long Term Evolution (LTE) is a wireless communication 4G technology developed by the 3rd Generation Partnership Project (3GPP). With the widespread deployment of LTE and the influx of a large number of intelligent terminals, it is expected that more and more LTE terminals will reside and conduct services in the network; in order to meet the rapidly growing number of users and service requirements, in the network Deploying multiple carriers for offloading users and services is a common solution adopted by operators. For load balancing of connected terminals, the terminal can be distributed to different carriers and different cells through mechanisms such as load information interaction, double link, handover, and redirection. However, the existing LTE idle state cell reselection mechanism may damage the connected state load. Balancing strategies and creating potential problems, including:

1) Existing cell reselection mechanisms based on different frequency priorities of the public may cause all idle state terminals to be concentrated on the highest priority carrier, which may cause a high priority carrier load to rapidly increase or overload, thereby affecting system performance and user experience. As shown in Figure 1, the frequency 1 of the cell 1 is a high priority, and the current state is already heavy, but the idle state terminal may still reselect to the cell 1;

2) The existing cell reselection mechanism based on the same frequency priority of the public may still cause a large number of similar terminals to inject into the same carrier, resulting in a rapid increase or overload of the carrier load, thereby affecting system performance and user experience, as shown in FIG. 2 It is shown that the frequency priorities of the cell 1, the cell 2, and the cell 3 are the same, but a large number of terminals with similar positions may simultaneously enter the cell 3 with light load;

3) Existing cell reselection mechanisms based on the same frequency priority of the public need to coordinate the inter-cell reselection parameters, otherwise ping-pong may cause cell reselection, resulting in increased terminal power consumption and users. Experience decline

4) The cell reselection mechanism based on the dedicated priority cannot adapt to the characteristics of the carrier's service load changing with time and the position of the terminal, so that the reasonable distribution of the terminal between carriers cannot be realized; the signaling load caused by dynamically updating the dedicated priority It may also affect system performance.

Different cell types in an LTE network can coexist and form a heterogeneous network, which will be a typical network existence form of LTE deployment. In a scenario where multiple cell types coexist, considering the diversity of the load condition of the small cell and the small coverage, blindly guiding the terminal to the small cell may make the terminal unable to access or increase power consumption, thereby affecting the user experience; On the other hand, using small cells as much as possible is also the original intention of operators to deploy small cells. However, the existing LTE idle state cell reselection mechanism is difficult to control the idle state terminal to camp on the small cell, as shown in FIG. 3, for example, once the small cell, such as the cell 3, has a frequency priority or a cell. The frequency or cell offset of 3 is set to a value that tends to cause the terminal to reselect to cell 3 (eg, the offset is set to a negative value), which may cause all terminals in coverage to reselect to cell 3, potentially The ground causes access problems and business experiences that affect subsequent connection states.

Summary of the invention

In order to solve the existing technical problems, the present invention mainly provides a cell reselection method, device and terminal.

The technical solution of the present invention is implemented as follows:

The present invention provides a cell reselection method, the method comprising:

The terminal determines a cell reselection signal offset according to the randomization algorithm, and performs cell reselection measurement and/or cell reselection decision processing by using the cell reselection signal offset.

The present invention also provides a cell reselection apparatus, the apparatus comprising: a signal offset determination module and an execution module; wherein

a signal offset determination module configured to determine a cell reselection signal offset according to a randomization algorithm;

An execution module configured to perform cell reselection measurement using the cell reselection signal offset and/or Or the decision processing of cell reselection.

The signal offset determination module and the execution module may use a central processing unit (CPU), a digital signal processor (DSP, Digital Singnal Processor), or a programmable logic array (FPGA, Field) when performing processing. -Programmable Gate Array) implementation.

The invention also provides a terminal, the terminal comprising the cell reselection device.

The present invention provides a cell reselection method, apparatus and terminal, the terminal determines a cell reselection signal offset according to a randomization algorithm, and uses the cell reselection signal offset to perform cell reselection measurement and/or cell reselection. The decision processing can be avoided. In this way, the problem that the terminal is concentrated on a specific carrier or cell in the idle state cell reselection mechanism in the prior art can be avoided, and a more balanced idle state cell distribution can be realized, and the ping-pong that does not cause cell reselection can be avoided. This leads to increased terminal power consumption and a drop in user experience.

DRAWINGS

FIG. 1 is a schematic diagram of a current cell reselection mechanism based on different frequency priorities;

2 is a schematic diagram of a conventional cell reselection mechanism based on the same frequency priority;

3 is a schematic diagram of a reselection mechanism of an existing LTE idle state cell for a small cell;

4 is a schematic flowchart of a current cell reselection for a higher frequency priority;

FIG. 5 is a schematic flowchart of existing cell reselection for the same frequency priority;

6 is a schematic flowchart of a conventional cell reselection for a lower frequency priority;

FIG. 7 is a schematic flowchart of a cell reselection method according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a result of a cell reselection apparatus according to an embodiment of the present invention;

FIG. 9 is a schematic flowchart of cell reselection for a higher frequency priority according to an embodiment of the present invention;

FIG. 10 is a schematic flowchart of another cell reselection for a higher frequency priority according to an embodiment of the present invention;

FIG. 11 is a schematic flowchart of cell reselection of the same frequency priority according to an embodiment of the present invention;

FIG. 12 is a schematic flowchart of another cell reselection for the same frequency priority according to an embodiment of the present invention;

FIG. 13 is a schematic flowchart of cell reselection for a lower frequency priority according to an embodiment of the present disclosure;

FIG. 14 is a schematic flowchart of another cell reselection for a lower frequency priority according to an embodiment of the present invention;

FIG. 15 is a schematic diagram of an example of cell reselection for a lower frequency priority according to an embodiment of the present invention;

FIG. 16 is a schematic diagram of a situation after cell reselection of a lower frequency priority according to an embodiment of the present invention.

detailed description

FIG. 4 is a schematic flowchart of a cell reselection for a higher frequency priority in the prior art, including:

Step 101: The terminal determines whether the serving cell signal parameter is greater than the first threshold, if yes, step 103 is performed; if not, step 102 is performed; and the first threshold characterizes the threshold value of the inter-frequency measurement;

Step 102: The terminal determines that the serving cell signal parameter is less than or equal to the first threshold, and performs step 103.

Step 103: Determine whether there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, if yes, execute step 104; here, if it is performed from step 102 to this step, for low frequency priority and Cells on the frequency of the same frequency priority are also measured, but are not considered in the scope of this embodiment.

Step 104: Perform measurement on a signal parameter of the non-serving cell, and perform measurement in different periods for two cases where the serving cell signal parameter is greater than or equal to the first threshold.

The signal parameter may be a cell signal strength, such as a cell reselection received power value or a cell signal quality calculated according to a reference signal received power (RSRP), such as a cell reselection signal quality calculated according to a reference signal received quality (RSRQ). Value, or cell signal to noise ratio.

Step 105: Determine that the signal parameter of the non-serving cell is greater than a third signal threshold, and meet other conditions of cell reselection, and reselect to the non-serving cell, where the third signal threshold represents a higher frequency priority. The signal threshold of the frequency neighbor cell reselection. The other conditions may refer to the provisions of the 3GPP specifications, for example, the terminal camping time exceeds a specified duration, and the like.

FIG. 5 is a schematic flowchart of a cell reselection of the same frequency priority in the prior art, including:

Step 201: The terminal determines whether the serving cell signal parameter is greater than the first threshold, if it is greater, step 206 is performed; if not, step 202 is performed;

Step 202: The terminal determines that the serving cell signal parameter is less than or equal to the first threshold, and performs step 103.

Step 203: Measure the signal parameters of the serving cell and the non-serving cell with the same frequency priority according to the specified period, and obtain the first measurement result of the serving cell and the third measurement result of the non-serving cell;

Step 204: Sort the serving cell and the non-serving cell according to the first measurement result and the third measurement result.

Step 205: If the third measurement result is greater than the first measurement result and meets other conditions of cell reselection, reselecting to the non-serving cell, the process ends; if the third measurement result is smaller than the first measurement result, Go to step 207. The other conditions may refer to the provisions of the 3GPP specifications, for example, the terminal camping time exceeds a specified duration, and the like.

Step 206: Determine that a non-serving cell having a frequency priority greater than a frequency priority of the serving cell exists;

Step 207: Continue to camp on the serving cell.

FIG. 6 is a schematic flowchart of a cell reselection for a lower frequency priority in the prior art, including:

Step 301: The terminal determines whether the serving cell signal parameter is greater than the first threshold, if it is greater than, then step 305; if not greater, then step 302;

Step 302: The terminal determines that the serving cell signal parameter is less than or equal to the first threshold, and performs step 303.

Step 303: Determine that there is a frequency point having a lower frequency priority, and measure a signal parameter of the non-serving cell at a frequency point with a lower frequency priority according to a prescribed period;

Step 304: Determine that the signal parameter of the non-serving cell is greater than the fifth signal threshold, the serving cell signal parameter is smaller than the seventh signal threshold, and meet other conditions of cell reselection, and reselect the non-serving cell, and the process ends; If the foregoing condition is not met, step 306 is performed; the fifth signal threshold is used to represent a signal threshold of a lower frequency priority inter-frequency neighbor cell reselection; and the seventh signal threshold is characterized by an inter-frequency cell weight having a lower frequency priority. The signal threshold of the selected serving cell. The other conditions may refer to the provisions of the 3GPP specifications, for example, the terminal camping time exceeds a specified duration, and the like.

Step 305: Determine that a non-serving cell having a frequency priority greater than a frequency priority of the serving cell exists;

Step 306: Continue to camp on the serving cell.

In the embodiment of the present invention, the terminal determines its own cell reselection signal offset according to the randomization algorithm, and uses the cell reselection signal offset to perform cell reselection measurement and/or cell reselection decision processing.

The invention will be further described in detail below with reference to the drawings and specific embodiments.

The embodiment of the present invention implements a cell reselection method. As shown in FIG. 7, the method includes the following steps:

Step 401: The terminal determines a cell reselection signal offset according to the randomization algorithm.

Specifically, the terminal obtains a value range of the cell reselection signal offset from the base station by using broadcast or unicast, calculates a random number, and determines a cell reselection signal offset according to the value range and the random number; or

The terminal obtains a cell reselection signal offset and a corresponding offset probability from the base station, such as by broadcast or unicast, calculates a random number, and determines to use the cell reselection signal offset according to the offset probability and the random number;

The cell reselection signal offset includes: a first signal offset, and/or a second signal offset, and/or a third signal offset, and/or a fourth signal offset; wherein

The first signal offset is used to modify the first threshold, that is, the first signal offset is added with a first threshold to obtain a corrected second threshold, and the second threshold is used for performing an inter-frequency cell weight Selecting a decision to initiate measurement; the first threshold characterizing a threshold value for initiating an inter-frequency measurement;

And/or, the first signal offset is used to correct the first measurement result, that is, the first signal offset plus the first measurement result, to obtain a corrected second measurement result, the second measurement a result for a decision of performing inter-frequency cell reselection of the same frequency priority; the first measurement result characterizing a measurement result of the serving cell reselected by the inter-frequency cell having the same frequency priority;

And/or, the first signal offset is used to correct a seventh signal threshold, that is, the first signal offset plus a seventh signal threshold, to obtain a modified eighth signal threshold, the eighth signal a threshold for determining a lower frequency priority inter-frequency cell reselection; the seventh signal threshold characterizing a signal threshold of a serving cell reselected by a different frequency priority having a lower frequency priority;

And/or, the second signal offset is used to correct the third measurement result, that is, the second signal offset plus the third measurement result, to obtain a corrected fourth measurement result, the fourth measurement a result of a decision for performing inter-frequency cell reselection of the same frequency priority; the third measurement result characterizing a measurement result of the non-serving cell reselected by the inter-frequency cell having the same frequency priority; wherein the second signal The offset includes one or a combination of: a second signal offset configured by the cell, and a second signal offset configured according to a frequency point to which the cell belongs. Here, if there are multiple non-serving cells, each non-serving cell may be separately Configure the second signal offset.

And/or, the third signal offset is used to modify the third signal threshold, that is, the third signal offset is added with a third signal threshold to obtain a corrected fourth signal threshold, the fourth signal a threshold for determining a higher frequency priority inter-frequency cell reselection; the third signal threshold characterizing a signal threshold of a higher frequency priority inter-frequency neighbor cell reselection; wherein the third signal offset Including one or a combination of the following: a third signal offset configured according to a cell, and a third signal offset configured according to a frequency point to which the cell belongs. Here, if there are multiple inter-frequency neighboring cells, each inter-frequency neighboring cell may be separately Configure the third signal offset.

And/or, the fourth signal offset is used to correct the fifth signal threshold, that is, the fourth signal offset is added with a fifth signal threshold to obtain a corrected sixth signal threshold, the sixth signal a threshold for determining a lower frequency priority inter-frequency cell reselection; the fifth signal threshold characterizing a signal threshold of a lower frequency priority inter-frequency neighbor cell reselection; wherein the fourth signal offset Including one or a combination of the following: a fourth signal offset configured by a cell, and a fourth signal offset configured according to a frequency point to which the cell belongs. Here, if there are multiple inter-frequency neighboring cells, each inter-frequency neighboring cell may be separately Configure the fourth signal offset.

Step 402: The terminal uses the cell reselection signal offset to perform measurement of cell reselection and/or decision process of cell reselection.

Specifically, in an embodiment, the terminal determines the first signal offset and/or the third signal offset according to the randomization algorithm; and/or corrects the first threshold according to the first signal offset to obtain a correction. And a second threshold; and/or correcting the third signal threshold according to the third signal offset to obtain a corrected fourth signal threshold.

In this embodiment, when the terminal can obtain the second threshold and the fourth threshold, the terminal uses the second threshold and the fourth threshold to perform a cell reselection operation; when the terminal cannot obtain the second threshold or the fourth threshold, the terminal uses the corresponding A threshold or third threshold performs cell reselection operations, such as cell reselection measurements, cell reselection decisions, and the like.

The terminal compares the signal parameter of the serving cell with the size of the second threshold. When the serving cell signal parameter is greater than the second threshold, if there is a non-serving cell with a frequency priority greater than the frequency priority of the serving cell, the first cycle is performed. The signal parameters of the non-serving cell are measured, Determining that the signal parameter of the non-serving cell is greater than a fourth signal threshold, and satisfying other conditions of cell reselection, reselecting to the non-serving cell; or

The terminal compares the signal parameter of the serving cell with the size of the second threshold. When the serving cell signal parameter is greater than the second threshold, if there is a non-serving cell with a frequency priority greater than the frequency priority of the serving cell, the first cycle is performed. The signal parameter of the non-serving cell is measured, and the signal parameter of the non-serving cell is determined to be greater than a third signal threshold, and other conditions of cell reselection are met, and the non-serving cell is reselected; or

The terminal compares the signal parameter of the serving cell with the size of the first threshold. When the serving cell signal parameter is greater than the first threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, the first cycle is performed. The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than a fourth signal threshold, and other conditions of cell reselection are met, and the non-serving cell is reselected.

Preferably, in the embodiment, the terminal compares the size of the serving cell signal parameter and the second threshold. When the serving cell signal parameter is less than or equal to the second threshold, if the frequency priority is greater than the frequency priority of the serving cell If the non-serving cell exists, the signal parameters of the non-serving cell are measured according to the second period, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other conditions for cell reselection are met, and the device is reselected. Non-serving cell; or,

The terminal compares the signal parameters of the serving cell and the size of the second threshold. When the serving cell signal parameter is less than or equal to the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, the second cycle is followed. Measure the signal parameters of the non-serving cell, determine that the signal parameter of the non-serving cell is greater than the third signal threshold, and satisfy other conditions of cell reselection, and reselect to the non-serving cell; or

The terminal compares the signal parameters of the serving cell with the size of the first threshold. When the serving cell signal parameter is less than or equal to the first threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, then the second period is followed. Measuring signal parameters of the non-serving cell And determining, that the signal parameter of the non-serving cell is greater than a fourth signal threshold, and satisfying other conditions of cell reselection, and reselecting to the non-serving cell.

In one embodiment, the terminal determines a first signal offset and/or a second signal offset according to a randomization algorithm; and/or corrects the first threshold according to the first signal offset to obtain a corrected The second threshold.

In this embodiment, the terminal uses the first threshold and/or the second measurement and/or the fourth measurement when the second threshold, and/or the first signal offset, and/or the second signal offset can be obtained. As a result, a cell reselection operation is performed; the terminal uses the corresponding first threshold, the first measurement result, and/or the third when the second threshold, and/or the first signal offset, and/or the second signal offset cannot be obtained. The measurement result is subjected to a cell reselection operation.

The terminal compares the signal parameters of the serving cell and the size of the second threshold. When the serving cell signal parameter is less than or equal to the second threshold, the signal parameters of the serving cell and the non-serving cell having the same frequency priority are measured according to the third period, and the service is obtained. a first measurement result of the cell and a third measurement result of the non-serving cell, and correcting the first measurement result according to the first signal offset, to obtain a corrected second measurement result, according to the second signal offset pair Correcting the third measurement result, obtaining the corrected fourth measurement result, determining that the fourth measurement result is greater than the second measurement result, and satisfying other conditions of cell reselection, and reselecting to the non-serving cell; or

The terminal compares the signal parameters of the serving cell and the size of the second threshold. When the serving cell signal parameter is less than or equal to the second threshold, the signal parameters of the serving cell and the non-serving cell having the same frequency priority are measured according to the third period, and the service is obtained. a first measurement result of the cell and a third measurement result of the non-serving cell, and correcting the first measurement result according to the first signal offset, to obtain a corrected second measurement result, determining that the third measurement result is greater than Retrieving the second measurement result and satisfying other conditions of cell reselection to the non-serving cell; or

The terminal compares the signal parameters of the serving cell with the size of the first threshold. When the serving cell signal parameter is less than or equal to the first threshold, the serving cell with the same frequency priority is used according to the third period. The signal parameters of the non-serving cell are measured, and the first measurement result of the serving cell and the third measurement result of the non-serving cell are obtained, and the third measurement result is corrected according to the second signal offset, and the corrected fourth measurement result is obtained. And determining that the fourth measurement result is greater than the first measurement result and satisfying other conditions of cell reselection, and reselecting to the non-serving cell.

In the embodiment, when there are multiple non-serving cells, the fourth measurement result of each non-serving cell may be sorted from high to low, and the fourth measurement result of the first serving non-serving cell is determined to be greater than the second. Measure the result and meet other conditions of cell reselection, reselect to the non-serving cell ranked first; or, when there are multiple non-serving cells, according to the fourth measurement result of each non-serving cell from high to low Sorting, determining that the fourth measurement result of the first non-serving cell is greater than the first measurement result, and satisfying other conditions of cell reselection, reselecting to the non-serving cell ranked first; or, when there are multiple non- When the cell is served, the third measurement result of each non-serving cell is sorted from high to low, and the third measurement result of the first non-serving cell is determined to be greater than the second measurement result, and other conditions for cell reselection are met, and the reselection is performed. To the non-serving cell in the first place.

In one embodiment, the terminal determines a first signal offset and/or a fourth signal offset according to a randomization algorithm; and/or corrects the first threshold according to the first signal offset to obtain a corrected a second threshold; and/or correcting the seventh signal threshold according to the first signal offset to obtain a corrected eighth signal threshold; and/or thresholding the fifth signal according to the fourth signal offset Correction is made to obtain the corrected sixth signal threshold. In this embodiment, the terminal is capable of obtaining a second threshold, and/or a sixth threshold, and/or an eighth threshold, using a second threshold, and/or a sixth threshold, and/or an eighth threshold for cell weighting. Selecting operation; the terminal performs cell reselection using the corresponding first threshold, and/or fifth threshold, and/or seventh threshold when the second threshold, and/or the sixth threshold, and/or the eighth threshold are not available. operating.

The terminal compares the signal parameter of the serving cell with the size of the second threshold. When the serving cell signal parameter is less than or equal to the second threshold, the signal parameter of the non-serving cell with the lower frequency priority is measured according to the fourth period, and the non-determination is performed. The signal parameter of the serving cell is greater than the sixth signal The threshold, the serving cell signal parameter is smaller than the eighth signal threshold, and meets other conditions of cell reselection, and is reselected to the non-serving cell; or

The terminal compares the signal parameter of the serving cell with the size of the second threshold. When the serving cell signal parameter is less than or equal to the second threshold, the signal parameter of the non-serving cell with the lower frequency priority is measured according to the fourth period, and the non-determination is performed. The signal parameter of the serving cell is greater than the fifth signal threshold, the serving cell signal parameter is smaller than the eighth signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected; or

The terminal compares the signal parameter of the serving cell with the size of the first threshold. When the signal parameter of the serving cell is less than or equal to the first threshold, the signal parameter of the non-serving cell with the lower frequency priority is measured according to the fourth period, and the non-determination is performed. The signal parameter of the serving cell is greater than the sixth signal threshold, the serving cell signal parameter is smaller than the eighth signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected; or

The terminal compares the signal parameter of the serving cell with the size of the first threshold. When the signal parameter of the serving cell is less than or equal to the first threshold, the signal parameter of the non-serving cell with the lower frequency priority is measured according to the fourth period, and the non-determination is performed. The signal parameter of the serving cell is greater than the sixth signal threshold, the serving cell signal parameter is smaller than the seventh signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected; or

Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the non-serving cell with the lower frequency priority are measured according to the fourth period, and the non-serving is determined. The signal parameter of the cell is greater than the fifth signal threshold, the serving cell signal parameter is smaller than the seventh signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected.

Here, the first period and the second period may be different values, and the second period, the third period, and the fourth period may be the same value or different values.

The embodiment of the present invention further provides a cell reselection apparatus according to the method of the embodiment of the present invention. As shown in FIG. 8, the device includes: a signal offset determination module 11 and an execution module 12;

The signal offset determining module 11 is configured to determine a cell reselection signal offset according to the randomization algorithm;

The executing module 12 is configured to perform measurement of cell reselection and/or decision processing of cell reselection by using the cell reselection signal offset.

Specifically, the signal offset determining module 11 obtains a value range of the cell reselection signal offset from the base station, such as by broadcast or unicast, calculates a random number, and determines a cell reselection signal offset according to the value range and the random number; or,

The signal offset determining module 11 calculates a random number from a base station, such as by using a broadcast or unicast, to obtain a cell reselection signal offset and a corresponding offset probability, and determines to use the cell reselection according to the offset probability and the random number. Signal offset

The cell reselection signal offset includes: a first signal offset, and/or a second signal offset, and/or a third signal offset, and/or a fourth signal offset; wherein

The first signal offset is used to modify the first threshold, that is, the first signal offset is added with a first threshold to obtain a corrected second threshold, and the second threshold is used for performing an inter-frequency cell weight Selecting a decision to initiate measurement; the first threshold characterizing a threshold value for initiating an inter-frequency measurement;

And/or, the first signal offset is used to correct the first measurement result, that is, the first signal offset plus the first measurement result, to obtain a corrected second measurement result, the second measurement a result for a decision of performing inter-frequency cell reselection of the same frequency priority; the first measurement result characterizing a measurement result of the serving cell reselected by the inter-frequency cell having the same frequency priority;

And/or, the first signal offset is used to correct a seventh signal threshold, that is, the first signal offset plus a seventh signal threshold, to obtain a modified eighth signal threshold, the eighth signal a threshold for determining a lower frequency priority inter-frequency cell reselection; the seventh signal threshold characterizing a signal threshold of a serving cell reselected by a different frequency priority having a lower frequency priority;

And/or, the second signal offset is used to correct the third measurement result, that is, the second signal offset plus the third measurement result, to obtain a corrected fourth measurement result, the fourth measurement a result of a decision for performing inter-frequency cell reselection of the same frequency priority; the third measurement result characterizing a measurement result of the non-serving cell reselected by the inter-frequency cell having the same frequency priority; wherein the second signal The offset includes one or a combination of: a second signal offset configured by the cell, and a second signal offset configured according to a frequency point to which the cell belongs. Here, if there are multiple non-serving cells, each non-serving cell may be separately Configure the second signal offset.

And/or, the third signal offset is used to modify the third signal threshold, that is, the third signal offset is added with a third signal threshold to obtain a corrected fourth signal threshold, the fourth signal a threshold for determining a higher frequency priority inter-frequency cell reselection; the third signal threshold characterizing a signal threshold of a higher frequency priority inter-frequency neighbor cell reselection; wherein the third signal offset Including one or a combination of the following: a third signal offset configured according to a cell, and a third signal offset configured according to a frequency point to which the cell belongs. Here, if there are multiple inter-frequency neighboring cells, each inter-frequency neighboring cell may be separately Configure the third signal offset.

And/or, the fourth signal offset is used to correct the fifth signal threshold, that is, the fourth signal offset is added with a fifth signal threshold to obtain a corrected sixth signal threshold, the sixth signal a threshold for determining a lower frequency priority inter-frequency cell reselection; the fifth signal threshold characterizing a signal threshold of a lower frequency priority inter-frequency neighbor cell reselection; wherein the fourth signal offset Including one or a combination of the following: a fourth signal offset configured by a cell, and a fourth signal offset configured according to a frequency point to which the cell belongs. Here, if there are multiple inter-frequency neighboring cells, each inter-frequency neighboring cell may be separately Configure the fourth signal offset.

In one embodiment, the signal offset determination module 11 is configured to determine a first signal offset and/or a third signal offset according to a randomization algorithm; and/or to bias the first signal according to the first signal The first threshold is corrected to obtain a corrected second threshold; and/or the third signal threshold is corrected according to the third signal offset to obtain a corrected fourth signal threshold.

Correspondingly, the executing module 12 is configured to compare the serving cell signal parameter and the second threshold. When the serving cell signal parameter is greater than the second threshold, if the frequency priority is greater than the If the non-serving cell of the priority of the serving cell exists, the signal parameter of the non-serving cell is measured according to the first period, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and the cell reselection is satisfied. Other conditions, reselected to the non-serving cell;

or,

Comparing the signal parameters of the serving cell and the size of the second threshold, when the serving cell signal parameter is greater than the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, the first period is compared The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than the third signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected; or

Comparing the signal parameters of the serving cell and the size of the first threshold, when the serving cell signal parameter is greater than the first threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, the first cycle is performed according to the first period. The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected.

or,

The executing module 12 is configured to compare the serving cell signal parameter and the second threshold. When the serving cell signal parameter is less than or equal to the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell If yes, the signal parameters of the non-serving cell are measured according to the second period, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other conditions for cell reselection are met, and the non-service is reselected. Community; or,

Comparing the signal parameters of the serving cell and the size of the second threshold, when the serving cell signal parameter is less than or equal to the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, then according to the second period The signal parameter of the non-serving cell is measured, and the signal parameter of the non-serving cell is determined to be greater than a third signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected; or

Comparing the signal parameters of the serving cell and the size of the first threshold, when the serving cell signal parameter is less than or equal to the first threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, then according to the second period The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected.

In one embodiment, the signal offset determination module 11 is configured to determine a first signal offset and/or a second signal offset according to a randomization algorithm, and/or to bias the first signal according to the first signal The first threshold is corrected and the corrected second threshold is obtained.

Correspondingly, the executing module 12 is configured to compare the serving cell signal parameter and the second threshold. When the serving cell signal parameter is less than or equal to the second threshold, the serving cell and the non-frequency have the same frequency priority. The signal parameters of the serving cell are measured, and the first measurement result of the serving cell and the third measurement result of the non-serving cell are obtained, and the first measurement result is corrected according to the first signal offset, and the corrected second measurement is obtained. As a result, the third measurement result is corrected according to the second signal offset, and the corrected fourth measurement result is obtained, and the fourth measurement result is determined to be greater than the second measurement result, and other conditions for cell reselection are met, and the second selection result is reselected. The non-serving cell; or,

Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the serving cell and the non-serving cell having the same frequency priority are measured according to the third period, and the serving cell is obtained. a first measurement result and a third measurement result of the non-serving cell, and correcting the first measurement result according to the first signal offset, to obtain a corrected second measurement result, determining that the third measurement result is greater than Retrieving to the non-serving cell by using two measurement results and satisfying other conditions of cell reselection; or

Comparing the signal parameters of the serving cell and the size of the first threshold, when the signal parameter of the serving cell is less than or equal to the first threshold, the signal parameters of the serving cell and the non-serving cell having the same frequency priority are measured according to the third period, and the serving cell is obtained. First measurement result and non-serving cell a third measurement result, and correcting the third measurement result according to the second signal offset, to obtain a corrected fourth measurement result, determining that the fourth measurement result is greater than the first measurement result, and satisfying another cell reselection Condition, reselect to the non-serving cell.

In this embodiment, the executing module 12 is further configured to: when there are multiple non-serving cells, determine the first non-serving cell according to the fourth measurement result of each non-serving cell. The fourth measurement result is greater than the second measurement result and meets other conditions of cell reselection, and is reselected to the non-serving cell ranked first; or

When there are multiple non-serving cells, according to the fourth measurement result of each non-serving cell, the fourth measurement result of the first non-serving cell is greater than the first measurement result, and the cell reselection is satisfied. Other conditions, re-elect to the non-serving cell ranked first; or

When there are multiple non-serving cells, the third measurement result of each non-serving cell is sorted from high to low, and the third measurement result of the first non-serving cell is determined to be greater than the second measurement result, and the cell reselection is satisfied. Other conditions, re-elect to the non-serving cell ranked first.

In one embodiment, the signal offset determination module 11 is configured to determine a first signal offset and/or a fourth signal offset according to a randomization algorithm; and/or to bias the first signal according to the first signal Correcting a first threshold to obtain a corrected second threshold; and/or correcting a seventh signal threshold according to the first signal offset to obtain a corrected eighth signal threshold; and/or, according to the The fourth signal offset corrects the fifth signal threshold to obtain a corrected sixth signal threshold.

Correspondingly, the executing module 12 is configured to compare the serving cell signal parameter and the second threshold. When the serving cell signal parameter is less than or equal to the second threshold, the non-serving cell with the lower frequency priority is used according to the fourth period. The signal parameter is measured, and the signal parameter of the non-serving cell is determined to be greater than the sixth signal threshold, the serving cell signal parameter is smaller than the eighth signal threshold, and other conditions for cell reselection are met, and the non-selection is performed to the non-reserved Service area; or,

Comparing the signal parameters of the serving cell and the size of the second threshold, when the serving cell signal parameter is less than or equal to the second threshold, the fourth period is used for the non-serving cell with the lower frequency priority. The parameter is measured to determine that the signal parameter of the non-serving cell is greater than the fifth signal threshold, the serving cell signal parameter is smaller than the eighth signal threshold, and other conditions for cell reselection are met, and the non-service is reselected. Community; or,

Comparing the signal parameters of the serving cell and the size of the first threshold, when the signal parameter of the serving cell is less than or equal to the first threshold, measuring signal parameters of the non-serving cell with a lower frequency priority according to the fourth period, determining the non-serving Reselecting to the non-serving cell if the signal parameter of the cell is greater than the sixth signal threshold, the serving cell signal parameter is smaller than the eighth signal threshold, and other conditions for cell reselection are met; or

Comparing the signal parameters of the serving cell and the size of the first threshold, when the signal parameter of the serving cell is less than or equal to the first threshold, measuring signal parameters of the non-serving cell with a lower frequency priority according to the fourth period, determining the non-serving Reselecting to the non-serving cell if the signal parameter of the cell is greater than the sixth signal threshold, the serving cell signal parameter is smaller than the seventh signal threshold, and other conditions for cell reselection are met; or

Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the non-serving cell with the lower frequency priority are measured according to the fourth period, and the non-serving is determined. The signal parameter of the cell is greater than the fifth signal threshold, the serving cell signal parameter is smaller than the seventh signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected.

Here, the first period and the second period may be different values, and the second period, the third period, and the fourth period may be the same value or different values.

Further, in another embodiment of the present invention, a terminal is provided, the terminal including the above-described cell reselection device.

The present invention will be described in detail below through specific scenarios.

FIG. 9 is a schematic flowchart of a cell reselection of a higher frequency priority according to an embodiment of the present invention, including:

Step 501: The terminal obtains a value range of a cell reselection signal offset of each cell used for the inter-frequency cell reselection from the base station.

Step 502: The terminal determines the first signal offset and the third signal offset according to the value range and the random number, where the value range obtained by the terminal may be two values of the minimum value and the maximum value, or may be only A value, when the value range obtained by the terminal is a value, indicating that the value ranges from 0 to the value, and the value may be a positive value or a negative value, for example, if the terminal obtains an offset range of 5, It means that the offset value can be in the range of [0, 5]; if the terminal obtains the offset range of -5, it means that the offset value can be in the range of [-5, 0]; in other embodiments, the cell is The specification of the value range of the reselection signal offset is similar, and will not be described below.

For example, the terminal generates a random number random between [0, 1], the first signal offset ranges from [A, B], and the third signal offset ranges from [C, D] to The first signal offset may be [A+(BA)*random], the determined third signal offset may be [C+(DC)*random]; or, if the first signal offset has a value range of B, The third signal offset has a value range of D, the determined first signal offset may be B*random, and the determined third signal offset may be D*random.

Step 503: The terminal determines whether the serving cell signal parameter is greater than the second threshold (first threshold + first signal offset), if it is greater, then step 505; if not greater, then step 504;

Step 504: The terminal determines that the serving cell signal parameter is less than or equal to the second threshold, and performs step 505.

Step 505: Determine that there is a non-serving cell having a frequency priority greater than the frequency priority of the serving cell, and perform step 506;

Step 506: Perform measurement on a signal parameter of the non-serving cell, and perform measurement in different periods for two cases in which a serving cell signal parameter is greater than or equal to a second threshold.

The signal parameter may be a cell signal strength, such as a cell reselection received power value or a cell signal quality calculated according to a reference signal received power (RSRP), such as a reference signal received quality. The amount of cell reselection signal quality calculated by the amount (RSRQ), or the cell signal to noise ratio.

Step 507: Determine that the signal parameter of the non-serving cell is greater than a fourth signal threshold (third signal threshold + third signal offset), and meet other conditions of cell reselection, and reselect to the non-serving cell.

FIG. 10 is a schematic flowchart of another cell reselection for a higher frequency priority according to an embodiment of the present invention, including:

Step 601: The terminal obtains, from the base station, a first signal offset and a third signal offset of each cell for the inter-frequency cell reselection, and a corresponding offset probability.

Step 602: The terminal determines to use the first signal offset and the third signal offset according to the offset probability and the random number.

Specifically, the terminal generates a random number random between [0, 1], and determines whether the random number is smaller than the offset probability p. If the random number random is less than the offset probability p, the terminal may press the following One of the ways to determine the first signal offset and the third signal offset:

Manner 1: determining that the first signal offset is a first signal offset corresponding to the offset probability obtained from the base station; determining that the third signal offset is a third signal offset corresponding to the offset probability obtained from the base station ;

Manner 2: determining that the first signal offset is obtained by obtaining, by the base station, a first signal offset corresponding to the offset probability, the offset probability p, and determining that the third signal offset is obtained by obtaining, by the base station, the offset probability. Third signal offset * the offset probability p;

Manner 3: determining that the first signal offset is obtained by obtaining, by the base station, the first signal offset corresponding to the offset probability, the random number random, and determining that the third signal offset is obtained by obtaining, by the base station, the offset probability Three signal offsets * The random number random.

It should be noted that, in an embodiment, whether the random number random is greater than the offset probability p may be determined. If the random number random is greater than the offset probability p, the terminal may also determine according to one of the foregoing manners. The first signal is biased and the third signal is biased.

Step 603: The terminal determines whether the serving cell signal parameter is greater than the second threshold (first threshold + first signal offset), if it is greater, then step 605; if not greater, then step 604;

Step 604: The terminal determines that the serving cell signal parameter is less than or equal to the second threshold, and performs step 605.

Step 605: Determine that there is a non-serving cell having a frequency priority greater than the frequency priority of the serving cell, and perform step 606;

Step 606: Perform measurement on a signal parameter of the non-serving cell, and perform measurement in different periods for two cases where the serving cell signal parameter is greater than or equal to the second threshold.

The signal parameter may be a cell signal strength, such as a cell reselection received power value or a cell signal quality calculated according to a reference signal received power (RSRP), such as a cell reselection signal quality calculated according to a reference signal received quality (RSRQ). Value, or cell signal to noise ratio.

Step 607: Determine that the signal parameter of the non-serving cell is greater than a fourth signal threshold (third signal threshold + third signal offset), and meet other conditions of cell reselection, and reselect to the non-serving cell.

FIG. 11 is a schematic flowchart of cell reselection of the same frequency priority according to an embodiment of the present invention, including:

Step 701: The terminal obtains, from the base station, a value range of a cell reselection signal offset of each cell used for the inter-frequency cell reselection.

Step 702: The terminal determines the first signal offset and the second signal offset according to the value range and the random number.

For example, the terminal generates a random number random between [0, 1], the first signal offset ranges from [A, B], and the second signal offset ranges from [E, F]. It is determined that the first signal offset may be [A+(BA)*random] and the second signal offset may be [E+(FE)*random].

Step 703: The terminal determines whether the serving cell signal parameter is greater than the second threshold (first threshold + first signal offset), if it is greater, then step 708; if not greater, then step 704;

Step 704: The terminal determines that the serving cell signal parameter is less than or equal to the second threshold, and performs step 705.

Step 705: Measure the signal parameters of the serving cell and the non-serving cell with the same frequency priority according to the specified period, and obtain the first measurement result of the serving cell and the third measurement result of the non-serving cell;

Step 706: Sort the serving cell and the non-serving cell according to the second measurement result (the first measurement result + the first signal offset) and the fourth measurement result (the third measurement result + the second signal offset);

Step 707: If the fourth measurement result is greater than the second measurement result and meets other conditions of cell reselection, reselecting to the non-serving cell, the process ends; if the fourth measurement result is smaller than the second measurement result, Go to step 709.

Step 708: Determine that there is no non-serving cell whose frequency priority is greater than the frequency priority of the serving cell;

Step 709: Continue to camp on the serving cell.

FIG. 12 is a schematic flowchart of another cell reselection for the same frequency priority according to an embodiment of the present invention, including:

Step 801: The terminal obtains, from the base station, a first signal offset and a second signal offset of each cell for the inter-frequency cell reselection, and a corresponding offset probability.

Step 802: The terminal determines to use the first signal offset and the second signal offset according to the offset probability and the random number.

Specifically, the terminal generates a random number random between [0, 1], and determines whether the random number is smaller than the offset probability p. If the random number random is less than the offset probability p, the terminal may press the following One of the modes determines the first signal offset and the second signal offset:

Manner 1: determining that the first signal offset is the first signal offset corresponding to the offset probability obtained from the base station, and determining that the second signal offset is the second signal corresponding to the offset probability obtained from the base station Number offset

Manner 2: determining that the first signal offset is obtained by obtaining, by the base station, a first signal offset corresponding to the offset probability, the offset probability p, and determining that the second signal offset is obtained by obtaining, by the base station, the offset probability. Second signal offset * the offset probability p;

Manner 3: determining that the first signal offset is obtained by obtaining, by the base station, the first signal offset corresponding to the offset probability, the random number random; determining that the second signal offset is obtained by obtaining, by the base station, the offset probability Two signal offsets * the random number random.

It should be noted that, in an embodiment, whether the random number random is greater than the offset probability p may be determined. If the random number random is greater than the offset probability p, the terminal may also determine according to one of the foregoing manners. The first signal is biased and the third signal is biased.

Step 803: The terminal determines whether the serving cell signal parameter is greater than the second threshold (first threshold + first signal offset), if it is greater, then step 808; if not greater, then step 804;

Step 804: The terminal determines that the serving cell signal parameter is less than or equal to the second threshold, and performs step 805.

Step 805: Perform measurement on signal parameters of the serving cell and the non-serving cell having the same frequency priority according to a predetermined period, and obtain a first measurement result of the serving cell and a third measurement result of the non-serving cell;

Step 806: Sort the serving cell and the non-serving cell according to the second measurement result (the first measurement result + the first signal offset) and the fourth measurement result (the third measurement result + the second signal offset);

Step 807: If the fourth measurement result is greater than the second measurement result and meets other conditions of cell reselection, reselecting to the non-serving cell, the process ends; if the fourth measurement result is smaller than the second measurement result, Go to step 809.

Step 808: Determine that there is no non-serving cell whose frequency priority is greater than the frequency priority of the serving cell;

Step 809: Continue to camp on the serving cell.

FIG. 13 is a schematic flowchart of a cell reselection of a lower frequency priority according to an embodiment of the present invention, including:

Step 901: The terminal obtains, from the base station, a value range of a cell reselection signal offset of each cell used for the inter-frequency cell reselection.

Step 902: The terminal determines the first signal offset and the fourth signal offset according to the value range and the random number.

For example, the terminal generates a random number random between [0, 1], the first signal offset ranges from [A, B], and the fourth signal offset ranges from [G, H]. It is determined that the first signal offset may be [A+(BA)*random] and the fourth signal offset may be [G+(HG)*random].

Step 903: The terminal determines whether the serving cell signal parameter is greater than the second threshold (first threshold + first signal offset), if it is greater, then step 907; if not greater, then step 904;

Step 904: The terminal determines that the serving cell signal parameter is less than or equal to the second threshold, and performs step 905.

Step 905: Determine that there is a frequency point having a lower frequency priority, and measure a signal parameter of the non-serving cell at a frequency point with a lower frequency priority according to a prescribed period;

Step 906: Determine that the signal parameter of the non-serving cell is greater than a sixth signal threshold (a fifth signal threshold + a fourth signal offset), and the serving cell signal parameter is less than an eighth signal threshold (a seventh signal threshold + a first signal offset) And satisfying other conditions of cell reselection, reselecting to the non-serving cell, the process ends; if the above condition is not met, performing step 908; the fifth signal threshold characterizing the lower frequency priority inter-frequency neighboring cell Reselected signal threshold; the seventh signal threshold characterizes a signal threshold of a serving cell reselected by a different frequency cell having a lower frequency priority.

Step 907: Determine that there is no non-serving cell whose frequency priority is greater than the frequency priority of the serving cell;

Step 908: Continue to camp on the serving cell.

FIG. 14 is a schematic flowchart of another cell reselection for a lower frequency priority according to an embodiment of the present invention, including:

Step 1001: The terminal obtains, from the base station, a first signal offset and a fourth signal offset of each cell for the inter-frequency cell reselection, and a corresponding offset probability.

Step 1002: The terminal determines to use the first signal offset and the fourth signal offset according to the offset probability and the random number.

Specifically, the terminal generates a random number random between [0, 1], and determines whether the random number is smaller than the offset probability p. If the random number random is less than the offset probability p, the terminal may press the following One of the modes determines the first signal offset and the fourth signal offset:

Manner 1: determining that the first signal offset is a first signal offset corresponding to the offset probability obtained from the base station, and determining that the fourth signal offset is a fourth signal offset corresponding to the offset probability obtained from the base station ;

Manner 2: determining that the first signal offset is obtained by obtaining, by the base station, a first signal offset corresponding to the offset probability, the offset probability p, and determining that the fourth signal offset is obtained by obtaining, by the base station, the offset probability. Fourth signal offset * said offset probability p;

Manner 3: determining that the first signal offset is obtained by obtaining, by the base station, the first signal offset corresponding to the offset probability, the random number random; determining that the fourth signal offset is obtained by obtaining, by the base station, the offset probability Four signal offsets * The random number random.

It should be noted that, in an embodiment, whether the random number random is greater than the offset probability p may be determined. If the random number random is greater than the offset probability p, the terminal may also determine according to one of the foregoing manners. The first signal is biased and the third signal is biased.

Step 1003: The terminal determines whether the serving cell signal parameter is greater than the second threshold (first threshold + first signal offset), if it is greater, then step 1007; if not greater, then step 1004;

Step 1004: The terminal determines that the serving cell signal parameter is less than or equal to the second threshold, and performs steps. 1005;

Step 1005: Determine that there is a frequency point having a lower frequency priority, and measure a signal parameter of the non-serving cell at a frequency point with a lower frequency priority according to a prescribed period;

Step 1006: Determine that the signal parameter of the non-serving cell is greater than a sixth signal threshold (the fifth signal threshold + the fourth signal offset), and the serving cell signal parameter is less than the eighth signal threshold (the seventh signal threshold + the first signal offset) And satisfying other conditions of cell reselection, reselecting to the non-serving cell, and ending the process; if the foregoing condition is not met, performing step 1008; the fifth signal threshold characterizing an inter-frequency neighboring cell with a lower frequency priority Reselected signal threshold; the seventh signal threshold characterizes a signal threshold of a serving cell reselected by a different frequency cell having a lower frequency priority.

Step 1007: Determine that there is no non-serving cell whose frequency priority is greater than the frequency priority of the serving cell;

Step 1008: Continue to camp on the serving cell.

It should be noted that the embodiments described in FIG. 9 to FIG. 14 are embodiments for cell reselection, and are also applicable to the case of frequency reselection. The processing at the time of frequency reselection is consistent with the process of cell reselection.

An example of cell reselection with lower frequency priority is illustrated below.

As shown in FIG. 15, the frequency 1 of the cell 1 is a high priority, and is a serving cell of the user equipment (UE) 1, UE2, UE3, and UE4, and is currently in a heavy load state, and the frequency 2 of the cell 2 is Medium priority, currently in medium load, frequency 3 of cell 3 is low priority, currently in light load; the range and threshold of cell reselection signal offset configured by the base station for each cell are shown in Table 1:

Table 1

The first signal offset and the fourth signal offset determined by each UE according to the range of the cell reselection signal offset of each cell, and the calculated cell reselection received power value Srxlev of each cell, this embodiment only considers the cell weight Select the received power value Srxlev, in fact, you can also use the cell reselection signal quality value Squal, or the cell signal to noise ratio, as shown in Table 2:

Table 2

Each UE generates an offset1 _cell according to a randomization method, for example, the UE generates a random number between [0, 1], random1, _cell = offset1 _cell *random, offset4 _{cell, UE} = offset4 _cell *random .

Existing mechanisms (UE1 and UE2):

For UE1 and UE2, (Srxlev _{UE1/UE2, cell1} = 12)> (first threshold = 10), according to the existing mechanism, UE1 and UE2 may not start to lower priority frequency 2/cell 2 and frequency 3/cell The measurement of 3 continues to stay in cell 1.

Method 1 (UE1) of the present invention:

For UE1, according to the method of the invention, (Srxlev _{UE1, cell1} = 12) < (first threshold + offset1 _{cell1, UE1} ) = 10 + 5 = 15, UE1 starts to lower priority frequency 2 / cell 2 and frequency 3 /Measurement of cell 3. The UE1 generates offset1 _{cell1, UE1} , offset4 _{cell2, UE1} , and offset4 _{cell3, UE1} according to the randomization method.

For cell 2, UE1 performs a cell reselection decision according to the following conditions:

1) (Srxlev _{UE1, cell2} = 12) > (fifth signal threshold + fourth signal offset) = (8 + (-4)) = 4;

2) (Srxlev _{UE1, cell1} = 12) < (seventh signal threshold + first signal offset) = 15;

3) other conditions for cell reselection as specified in the agreement;

Then UE1 reselects to cell 2.

Method 1 (UE2) of the present invention:

For UE2, according to the method of the invention, (Srxlev _{UE2, cell1} = 12) > (first threshold + offset1 _{cell1, UE2} ) = 10 + 1 = 11, UE2 does not start for lower priority frequency 2 / cell 2 and frequency 3/Measurement of Cell 3.

Existing mechanism (UE3):

For UE3, (Srxlev _{UE3, cell1} = 7) <first threshold = 10), according to the existing mechanism, UE3 will initiate measurements on lower priority frequency 2/cell 2 and frequency 3/cell 3.

However, for cell 2, (Srxlev _{UE3, cell2} = 7) < (fifth signal threshold = 8), UE3 cannot reselect to cell 2 according to the existing mechanism.

For cell 3, (Srxlev _{UE3, cell3} = 7) < (the fifth threshold = 8), according to the existing mechanism, UE3 cannot reselect to cell 3.

Method 1 (UE3) of the present invention:

For UE3, according to the method of the invention, (Srxlev _{UE3, cell1} = 7) < (first threshold + offset1 _{cell1, UE3} ) = 10 + 8 = 18, UE3 can still initiate lower priority frequency 2 / cell 2 and Frequency 3 / Cell 3 measurement.

For cell 2, UE3 performs a cell reselection decision according to the following conditions:

1) (Srxlev _{UE3, cell2} = 7) > (fifth signal threshold + fourth signal offset) = (8 + (-5)) = 3;

2) (Srxlev _{UE3, cell2} = 7) < (seventh signal threshold + first signal offset) = 15;

3) other conditions for cell reselection as specified in the agreement;

Then UE3 reselects to cell 2.

Existing mechanism (UE4):

For UE4, (Srxlev _{UE4, cell1} = 4) < (first threshold = 10), according to the existing mechanism, UE4 will initiate measurements for lower priority frequency 2/cell 2 and frequency 3/cell 3.

However, for cell 2, (Srxlev _{UE4, cell2} = 4) < (fifth signal threshold = 8), UE4 cannot reselect to cell 2 according to the existing mechanism.

For cell 3, (Srxlev _{UE4, cell3} = 4) < (fifth signal threshold = 8), UE4 cannot reselect to cell 3 according to the existing mechanism.

Method 1 (UE4) of the present invention:

For UE4, according to the method of the invention, (Srxlev _{UE4, cell1} = 4) < (first threshold + offset1 _{cell1, UE4} ) = 10 + 5 = 15, UE4 can still initiate lower priority frequency 2 / cell 2 and Frequency 3 / Cell 3 measurement.

For cell 2, UE4 performs a cell reselection decision according to the following conditions:

(Srxlev _{UE4, cell2} = 4) = (fifth signal threshold + fourth signal offset) = (8 + (-4)) = 4;

Then UE4 cannot reselect to cell 2, and UE4 further determines cell 3;

For cell 3, UE4 performs a cell reselection decision according to the following conditions:

1) (Srxlev _{UE4, cell3} = 4) > (fifth signal threshold + fourth signal offset) = (8 + (-7)) = 1;

2) (Srxlev _{UE4, cell2} = 4) < (seventh signal threshold + first signal offset) = 15;

3) other conditions for cell reselection as specified in the agreement;

Then UE4 reselects to cell 3.

Through the above process, a more balanced UE distribution as shown in FIG. 16 can be realized, thereby implementing:

1) The UE is not concentrated in the cell 1 with high frequency priority, and the UE is distributed in each cell;

2) For terminals with the same signal conditions (UE1 and UE2), they may also camp in different cells;

3) Allow the UE to camp on a cell with a low priority frequency.

Method 2 of the present invention

The UE determines the signal offset used by the UE in the following manner, and performs cell reselection related operations according to the method 1.

As shown in Table 3, the base station only provides a probability p that is suitable for all signal offsets.

table 3

The signal offsets used by UE1 and UE2 are shown in Table 4.

Table 4

Table 5 shows the probability that the base station provides for each signal offset:

table 5

The signal offsets used by UE1 and UE2 are as shown in Table 6:

Table 6

It is assumed that according to the above method, the first signal offset and the fourth signal offset determined by UE1 and UE2, and the measured RSRP of each cell are as shown in Table 7:

Table 7

Then UE1 and UE2 can generate the same cell reselection procedure as method 1 of the present invention.

In summary, in the embodiment of the present invention, the terminal determines the cell reselection signal offset according to the randomization algorithm, which can avoid the problem that the terminal is concentrated on a specific carrier or cell in the idle state cell reselection mechanism, and achieve a more balanced idle state. The cell is distributed, and the ping-pong that does not cause cell reselection avoids the increase in power consumption of the terminal and the degradation of the user experience.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

In the cell reselection scheme provided by the embodiment of the present invention, the terminal determines a cell reselection signal offset according to the randomization algorithm, and uses the cell reselection signal offset to perform cell reselection measurement and/or cell reselection decision processing; In this way, the problem that the terminal is concentrated on a specific carrier or cell in the idle state cell reselection mechanism in the prior art can be avoided, and a more balanced idle state cell distribution can be realized, and the ping-pong of the cell reselection is not caused, and the terminal consumption is avoided. Electricity increases and user experience declines.

Claims (25)

A cell reselection method, the method comprising: The terminal determines a cell reselection signal offset according to the randomization algorithm, and performs cell reselection measurement and/or cell reselection decision processing by using the cell reselection signal offset. The method of claim 1, wherein the determining, by the terminal, the cell reselection signal offset according to the randomization algorithm comprises: The terminal obtains a value range of the cell reselection signal offset, calculates a random number, and determines a cell reselection signal offset according to the value range and the random number. The method of claim 1, wherein the determining, by the terminal, the cell reselection signal offset according to the randomization algorithm comprises: The terminal obtains the cell reselection signal offset and the corresponding offset probability, calculates a random number, and determines to use the cell reselection signal offset according to the offset probability and the random number. The method of claim 2 or 3, wherein the cell reselection signal offset comprises: a first signal offset, and/or a second signal offset, and/or a third signal offset, and/or The fourth signal is biased, wherein The first signal offset is used to modify the first threshold to obtain a modified second threshold, and the second threshold is used to perform a decision of starting the inter-frequency cell reselection measurement; Frequency measurement threshold; And/or, the first signal offset is used to modify the first measurement result to obtain a corrected second measurement result, where the second measurement result is used for performing inter-frequency cell reselection of the same frequency priority a first measurement result characterizing a measurement result of a serving cell reselected by an inter-frequency cell having the same frequency priority; And/or, the first signal offset is used to modify the seventh signal threshold to obtain a modified eighth signal threshold, and the eighth signal threshold is used for performing inter-frequency cell reselection with lower frequency priority Decision of the seventh signal threshold to characterize inter-frequency cell reselection with lower frequency priority Signal threshold of the serving cell in the middle; And/or, the second signal offset is used to modify the third measurement result to obtain a modified fourth measurement result, where the fourth measurement result is used for performing inter-frequency cell reselection of the same frequency priority a third measurement result characterizing a measurement result of the non-serving cell reselected by the inter-frequency cell having the same frequency priority; And/or, the third signal offset is used to modify the third signal threshold to obtain a modified fourth signal threshold, and the fourth signal threshold is used for performing inter-frequency cell reselection with higher frequency priority The third signal threshold characterizes a signal threshold of a higher frequency priority inter-frequency neighbor cell reselection; And/or, the fourth signal offset is used to modify the fifth signal threshold to obtain a corrected sixth signal threshold, and the sixth signal threshold is used for performing inter-frequency cell reselection with lower frequency priority The fifth signal threshold characterizes the signal threshold of the lower frequency priority inter-frequency neighbor cell reselection. The method according to claim 4, wherein the determining, by the terminal, the cell reselection signal offset according to the randomization algorithm comprises: The terminal determines a first signal offset and/or a third signal offset according to a randomization algorithm; and/or Correcting the first threshold according to the first signal offset to obtain a corrected second threshold; and/or correcting the third signal threshold according to the third signal offset to obtain a corrected fourth signal Threshold. The method according to claim 4 or 5, wherein the decision processing for performing cell reselection measurement and/or cell reselection using the cell reselection signal offset comprises: Comparing the signal parameters of the serving cell and the size of the second threshold, when the serving cell signal parameter is greater than the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, the first period is compared The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other bars that satisfy the cell reselection are determined. Reselecting to the non-serving cell; or, Comparing the signal parameters of the serving cell and the size of the second threshold, when the serving cell signal parameter is greater than the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, the first period is compared The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than the third signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected; or Comparing the signal parameters of the serving cell and the size of the first threshold, when the serving cell signal parameter is greater than the first threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, the first cycle is performed according to the first period. The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected. The method of claim 4 or 5, wherein the determining of the cell reselection using the cell reselection signal offset and/or the cell reselection comprises: Comparing the signal parameters of the serving cell and the size of the second threshold, when the serving cell signal parameter is less than or equal to the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, then according to the second period The signal parameter of the non-serving cell is measured, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected; or Comparing the signal parameters of the serving cell and the size of the second threshold, when the serving cell signal parameter is less than or equal to the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, then according to the second period The signal parameter of the non-serving cell is measured, and the signal parameter of the non-serving cell is determined to be greater than a third signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected; or Comparing the signal parameters of the serving cell and the size of the first threshold, when the serving cell signal parameter is less than or equal to the first threshold, if the frequency priority is greater than the frequency priority of the serving cell If the serving cell exists, the signal parameter of the non-serving cell is measured according to the second period, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other conditions for cell reselection are met, and the Non-serving cell. The method according to claim 4, wherein the determining, by the terminal, the cell reselection signal offset according to the randomization algorithm comprises: The terminal determines a first signal offset and/or a second signal offset according to a randomization algorithm; and/or Correcting the first threshold according to the first signal offset to obtain a corrected second threshold. The method according to claim 4 or 8, wherein the decision processing for performing cell reselection measurement and/or cell reselection using the cell reselection signal offset comprises: Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the serving cell and the non-serving cell having the same frequency priority are measured according to the third period, and the serving cell is obtained. a first measurement result and a third measurement result of the non-serving cell, and correcting the first measurement result according to the first signal offset, to obtain a corrected second measurement result, and according to the second signal offset to the third Correcting the measurement result, obtaining a corrected fourth measurement result, determining that the fourth measurement result is greater than the second measurement result, and satisfying other conditions of cell reselection, and reselecting to the non-serving cell; or Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the serving cell and the non-serving cell having the same frequency priority are measured according to the third period, and the serving cell is obtained. a first measurement result and a third measurement result of the non-serving cell, and correcting the first measurement result according to the first signal offset, to obtain a corrected second measurement result, determining that the third measurement result is greater than Retrieving to the non-serving cell by using two measurement results and satisfying other conditions of cell reselection; or Comparing the signal parameters of the serving cell and the size of the first threshold, when the signal parameter of the serving cell is less than or equal to the first threshold, the signal parameters of the serving cell and the non-serving cell having the same frequency priority are measured according to the third period, and the serving cell is obtained. First measurement result and non-serving cell a third measurement result, and correcting the third measurement result according to the second signal offset, to obtain a corrected fourth measurement result, determining that the fourth measurement result is greater than the first measurement result, and satisfying another cell reselection Condition, reselect to the non-serving cell. The method of claim 9 wherein the method further comprises: When there are multiple non-serving cells, according to the fourth measurement result of each non-serving cell, the fourth measurement result of the first non-serving cell is greater than the second measurement result, and the cell reselection is satisfied. Other conditions, re-elect to the non-serving cell ranked first; or When there are multiple non-serving cells, according to the fourth measurement result of each non-serving cell, the fourth measurement result of the first non-serving cell is greater than the first measurement result, and the cell reselection is satisfied. Other conditions, re-elect to the non-serving cell ranked first; or When there are multiple non-serving cells, the third measurement result of each non-serving cell is sorted from high to low, and the third measurement result of the first non-serving cell is determined to be greater than the second measurement result, and the cell reselection is satisfied. Other conditions, re-elect to the non-serving cell ranked first. The method according to claim 4, wherein the determining, by the terminal, the cell reselection signal offset according to the randomization algorithm comprises: The terminal determines a first signal offset and/or a fourth signal offset according to a randomization algorithm; and/or Correcting the first threshold according to the first signal offset to obtain a corrected second threshold; and/or correcting the seventh signal threshold according to the first signal offset to obtain a corrected eighth signal a threshold; and/or correcting the fifth signal threshold according to the fourth signal offset to obtain a corrected sixth signal threshold. The method according to claim 4 or 11, wherein the decision processing for performing cell reselection measurement and/or cell reselection using the cell reselection signal offset comprises: Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the non-serving cell with the lower frequency priority are measured according to the fourth period, and the non-serving is determined. The signal parameter of the cell is greater than the sixth signal threshold, The serving cell signal parameter is smaller than the eighth signal threshold and meets other conditions of cell reselection, and is reselected to the non-serving cell; or Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the non-serving cell with the lower frequency priority are measured according to the fourth period, and the non-serving is determined. Reselecting to the non-serving cell if the signal parameter of the cell is greater than the fifth signal threshold, the serving cell signal parameter is smaller than the eighth signal threshold, and other conditions for cell reselection are met; or Comparing the signal parameters of the serving cell and the size of the first threshold, when the signal parameter of the serving cell is less than or equal to the first threshold, measuring signal parameters of the non-serving cell with a lower frequency priority according to the fourth period, determining the non-serving Reselecting to the non-serving cell if the signal parameter of the cell is greater than the sixth signal threshold, the serving cell signal parameter is smaller than the eighth signal threshold, and other conditions for cell reselection are met; or Comparing the signal parameters of the serving cell and the size of the first threshold, when the signal parameter of the serving cell is less than or equal to the first threshold, measuring signal parameters of the non-serving cell with a lower frequency priority according to the fourth period, determining the non-serving Reselecting to the non-serving cell if the signal parameter of the cell is greater than the sixth signal threshold, the serving cell signal parameter is smaller than the seventh signal threshold, and other conditions for cell reselection are met; or Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the non-serving cell with the lower frequency priority are measured according to the fourth period, and the non-serving is determined. The signal parameter of the cell is greater than the fifth signal threshold, the serving cell signal parameter is smaller than the seventh signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected. A cell reselection device, comprising: a signal offset determination module and an execution module; wherein a signal offset determination module configured to determine a cell reselection signal offset according to a randomization algorithm; An execution module is configured to perform measurement of cell reselection and/or decision processing of cell reselection by using the cell reselection signal offset. The apparatus according to claim 13, wherein the signal offset determining module is configured to obtain a value range of the cell reselection signal offset, calculate a random number, and determine a cell reselection signal offset according to the value range and the random number. Set. The apparatus according to claim 13, wherein the signal offset determining module is configured to obtain a cell reselection signal offset and a corresponding offset probability, calculate a random number, and determine to use according to the offset probability and the random number. The cell reselection signal is offset. The apparatus of claim 14 or 15, wherein the cell reselection signal offset comprises: a first signal offset, and/or a second signal offset, and/or a third signal offset, and/or The fourth signal is biased, wherein The first signal offset is used to modify the first threshold to obtain a modified second threshold, and the second threshold is used to perform a decision of starting the inter-frequency cell reselection measurement; Frequency measurement threshold; And/or, the first signal offset is used to modify the first measurement result to obtain a corrected second measurement result, where the second measurement result is used for performing inter-frequency cell reselection of the same frequency priority a first measurement result characterizing a measurement result of a serving cell reselected by an inter-frequency cell having the same frequency priority; And/or, the first signal offset is used to modify the seventh signal threshold to obtain a modified eighth signal threshold, and the eighth signal threshold is used for performing inter-frequency cell reselection with lower frequency priority The seventh signal threshold characterizes a signal threshold of a serving cell reselected by a different frequency cell having a lower frequency priority; And/or, the second signal offset is used to modify the third measurement result to obtain a modified fourth measurement result, where the fourth measurement result is used for performing inter-frequency cell reselection of the same frequency priority a third measurement result characterizing an inter-frequency cell reselection having the same frequency priority Measurement results of non-serving cells in the middle; And/or, the third signal offset is used to modify the third signal threshold to obtain a modified fourth signal threshold, and the fourth signal threshold is used for performing inter-frequency cell reselection with higher frequency priority The third signal threshold characterizes a signal threshold of a higher frequency priority inter-frequency neighbor cell reselection; And/or, the fourth signal offset is used to modify the fifth signal threshold to obtain a corrected sixth signal threshold, and the sixth signal threshold is used for performing inter-frequency cell reselection with lower frequency priority The fifth signal threshold characterizes the signal threshold of the lower frequency priority inter-frequency neighbor cell reselection. The apparatus of claim 16, wherein the signal offset determination module is configured to determine a first signal offset and/or a third signal offset according to a randomization algorithm; and/or, according to the first The signal offset corrects the first threshold to obtain a corrected second threshold; and/or corrects the third signal threshold according to the third signal offset to obtain a corrected fourth signal threshold. The apparatus according to claim 16 or 17, wherein the execution module is configured to compare a serving cell signal parameter and a second threshold. When the serving cell signal parameter is greater than the second threshold, if the frequency priority is greater than the If the non-serving cell of the priority of the serving cell exists, the signal parameter of the non-serving cell is measured according to the first period, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and the cell reselection is satisfied. Other conditions, reselected to the non-serving cell; or, Comparing the signal parameters of the serving cell and the size of the second threshold, when the serving cell signal parameter is greater than the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, the first period is compared The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than a third signal threshold, and other bars satisfying cell reselection are determined. Reselecting to the non-serving cell; or, Comparing the signal parameters of the serving cell and the size of the first threshold, when the serving cell signal parameter is greater than the first threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, the first cycle is performed according to the first period. The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected. The apparatus according to claim 16 or 17, wherein the execution module is configured to compare the size of the serving cell signal parameter and the second threshold, and if the serving cell signal parameter is less than or equal to the second threshold, if the frequency priority is greater than If the non-serving cell of the priority of the serving cell exists, the signal parameter of the non-serving cell is measured according to the second period, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and the cell weight is met. Other conditions selected, reselected to the non-serving cell; or, Comparing the signal parameters of the serving cell and the size of the second threshold, when the serving cell signal parameter is less than or equal to the second threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, then according to the second period The signal parameter of the non-serving cell is measured, and the signal parameter of the non-serving cell is determined to be greater than a third signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected; or Comparing the signal parameters of the serving cell and the size of the first threshold, when the serving cell signal parameter is less than or equal to the first threshold, if there is a non-serving cell whose frequency priority is greater than the frequency priority of the serving cell, then according to the second period The signal parameters of the non-serving cell are measured, and the signal parameter of the non-serving cell is determined to be greater than the fourth signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected. The apparatus of claim 16, wherein the signal offset determination module is configured to determine a first signal offset and/or a second signal offset according to a randomization algorithm; and/or, according to the first The signal offset corrects the first threshold to obtain a corrected second threshold. The apparatus according to claim 16 or 20, wherein the execution module is configured to compare the size of the serving cell signal parameter and the second threshold, and when the serving cell signal parameter is less than or equal to the second threshold, according to the third period pair The signal parameters of the serving cell and the non-serving cell of the same frequency priority are measured, and the first measurement result of the serving cell and the third measurement result of the non-serving cell are obtained, and the first measurement result is performed according to the first signal offset Correcting, obtaining the corrected second measurement result, correcting the third measurement result according to the second signal offset, obtaining the corrected fourth measurement result, determining that the fourth measurement result is greater than the second measurement result, and satisfying the cell Other conditions of reselection, reselection to the non-serving cell; or, Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the serving cell and the non-serving cell having the same frequency priority are measured according to the third period, and the serving cell is obtained. a first measurement result and a third measurement result of the non-serving cell, and correcting the first measurement result according to the first signal offset, to obtain a corrected second measurement result, determining that the third measurement result is greater than Retrieving to the non-serving cell by using two measurement results and satisfying other conditions of cell reselection; or Comparing the signal parameters of the serving cell and the size of the first threshold, when the signal parameter of the serving cell is less than or equal to the first threshold, the signal parameters of the serving cell and the non-serving cell having the same frequency priority are measured according to the third period, and the serving cell is obtained. The first measurement result and the third measurement result of the non-serving cell, and correcting the third measurement result according to the second signal offset, to obtain the corrected fourth measurement result, determining that the fourth measurement result is greater than the first measurement result As a result, and satisfying other conditions of cell reselection, reselecting to the non-serving cell. The apparatus according to claim 21, wherein the execution module is further configured to: when there are multiple non-serving cells, sort the high-low order according to the fourth measurement result of each non-serving cell, and determine the non-first bit The fourth measurement result of the serving cell is greater than the second measurement result, and meets other conditions of cell reselection, and is reselected to the non-serving cell ranked first; or When there are multiple non-serving cells, the fourth measurement result according to each non-serving cell is from high to low. Sorting, determining that the fourth measurement result of the first non-serving cell is greater than the first measurement result, and satisfying other conditions of cell reselection, reselecting to the non-serving cell ranked first; or When there are multiple non-serving cells, the third measurement result of each non-serving cell is sorted from high to low, and the third measurement result of the first non-serving cell is determined to be greater than the second measurement result, and the cell reselection is satisfied. Other conditions, re-elect to the non-serving cell ranked first. The apparatus of claim 16, wherein the signal offset determination module is configured to determine a first signal offset and/or a fourth signal offset according to a randomization algorithm; and/or, according to the first The signal offset corrects the first threshold to obtain a corrected second threshold; and/or corrects the seventh signal threshold according to the first signal offset to obtain a corrected eighth signal threshold; and/or And correcting the fifth signal threshold according to the fourth signal offset to obtain a corrected sixth signal threshold. The apparatus according to claim 16 or 23, wherein the execution module is configured to compare the size of the serving cell signal parameter and the second threshold, and when the serving cell signal parameter is less than or equal to the second threshold, according to the fourth period pair The signal parameters of the non-serving cell of the lower frequency priority are measured, and the signal parameter of the non-serving cell is greater than the sixth signal threshold, the signal parameter of the serving cell is smaller than the eighth signal threshold, and the cell reselection is satisfied. Other conditions, reselecting to the non-serving cell; or, Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the non-serving cell with the lower frequency priority are measured according to the fourth period, and the non-serving is determined. Reselecting to the non-serving cell if the signal parameter of the cell is greater than the fifth signal threshold, the serving cell signal parameter is smaller than the eighth signal threshold, and other conditions for cell reselection are met; or Comparing the signal parameters of the serving cell and the size of the first threshold, when the signal parameter of the serving cell is less than or equal to the first threshold, measuring signal parameters of the non-serving cell with a lower frequency priority according to the fourth period, determining the non-serving The signal parameter of the cell is greater than the sixth signal threshold, The serving cell signal parameter is smaller than the eighth signal threshold and meets other conditions of cell reselection, and is reselected to the non-serving cell; or Comparing the signal parameters of the serving cell and the size of the first threshold, when the signal parameter of the serving cell is less than or equal to the first threshold, measuring signal parameters of the non-serving cell with a lower frequency priority according to the fourth period, determining the non-serving Reselecting to the non-serving cell if the signal parameter of the cell is greater than the sixth signal threshold, the serving cell signal parameter is smaller than the seventh signal threshold, and other conditions for cell reselection are met; or Comparing the signal parameters of the serving cell and the size of the second threshold, when the signal parameter of the serving cell is less than or equal to the second threshold, the signal parameters of the non-serving cell with the lower frequency priority are measured according to the fourth period, and the non-serving is determined. The signal parameter of the cell is greater than the fifth signal threshold, the serving cell signal parameter is smaller than the seventh signal threshold, and other conditions for cell reselection are met, and the non-serving cell is reselected. A terminal comprising the apparatus of any one of claims 13 to 24.

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