WO2019029540A1

WO2019029540A1 - Cell measurement method and apparatus, terminal, and storage medium

Info

Publication number: WO2019029540A1
Application number: PCT/CN2018/099236
Authority: WO
Inventors: 李伟清
Original assignee: Oppo广东移动通信有限公司
Priority date: 2017-08-10
Filing date: 2018-08-07
Publication date: 2019-02-14
Also published as: CN107295558B; CN107295558A

Abstract

Embodiments of the present application relate to the field of communications. Disclosed are a cell measurement method and apparatus, a terminal, and a storage medium. The method comprises: performing signal measurement on a serving cell and a neighboring cell to obtain the measurement result corresponding to the serving cell and the measurement result corresponding to the neighboring cell, the measurement results comprising the signal strengths of the cells; computing an ith signal measurement value of the serving cell according to the cell signal strength of the serving cell in an ith measurement period, and performing signal measurement for n times in each measurement period, i≥1, n≥2; if a difference between the ith signal measurement value of the serving cell and a history signal value of the serving cell is less than a threshold, stopping performing signal measurement on the neighboring cell in an (i+1)th measurement period; and if the difference between the ith signal measurement value of the serving cell and the history signal value of the serving cell is greater than the threshold, performing signal measurement on the neighboring cell in the (i+1)th measurement period, and updating the history signal value of the serving cell according to the ith signal measurement value of the serving cell.

Description

Cell measurement method, device, terminal and storage medium

The embodiment of the present application claims the priority of the Chinese Patent Application of the Chinese National Intellectual Property Office, the application number is 201710679508.2, and the invention is entitled "Cell Measurement Method and Apparatus" on August 10, 2017, the entire contents of which are incorporated herein by reference. In the application example.

Technical field

The embodiments of the present invention relate to the field of communications, and in particular, to a cell measurement method, apparatus, terminal, and storage medium.

Background technique

In the mobile communication system, in order to ensure the communication quality of the terminal, the base station needs to perform cell reselection or handover on the terminal, and the cell reselection or handover by the base station depends on the signal measurement and reporting by the terminal to the neighboring cell.

In the related art, in order to reduce the power consumption of the terminal, when the terminal performs signal measurement on the serving cell and the neighboring cell, the first timer is enabled. When the first timer reaches the timing, the terminal calculates the timing start time and the timing end time serving cell. The signal difference value; when the signal difference is less than the threshold, the terminal stops performing signal measurement on the neighboring cell, and enables the second timer, and then re-measures the neighboring cell when the second timer reaches the timing.

Summary of the invention

The embodiment of the present application provides a cell measurement method, device, terminal, and storage medium. The technical solution is as follows:

In one aspect, a cell measurement method is provided, the method comprising:

Performing signal measurement on the serving cell and the neighboring cell, and obtaining corresponding measurement results of the serving cell and the neighboring cell, where the measurement result includes the cell signal strength;

Calculating an ith signal measurement value of the serving cell according to the cell signal strength of the serving cell in the ith measurement period, and performing n times signal measurement in each measurement period, i≥1, n≥2, i, n being an integer;

If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is less than the threshold, the signal measurement of the neighboring cell is stopped during the (i+1)th measurement period;

If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is greater than a threshold, performing signal measurement on the neighboring cell in the (i+1)th measurement period, and serving the value according to the ith signal of the serving cell The historical signal value of the cell is updated.

In another aspect, a cell measurement device is provided, the device comprising:

a first measurement module, configured to perform signal measurement on the serving cell and the neighboring cell, and obtain corresponding measurement results of the serving cell and the neighboring cell, where the measurement result includes the cell signal strength;

a first calculating module, configured to calculate an ith signal measurement value of the serving cell according to a cell signal strength of the serving cell in the ith measurement period, and perform n times signal measurement in each measurement period, i≥1, n≥2, i , n is an integer;

a stopping module, configured to stop performing signal measurement on the neighboring cell in the (i+1)th measurement period when the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is less than a threshold;

And an update module, configured to: when the difference between the ith signal measurement value of the serving cell and the historical signal value of the serving cell is greater than a threshold, perform signal measurement on the neighboring cell in the (i+1)th measurement period, and according to the i th The signal measurement updates the historical signal value of the serving cell.

In another aspect, a terminal is provided, the terminal comprising: a processor, a memory coupled to the processor, and program instructions stored on the memory, the processor performing the program instructions to implement the cell measurement method as described in the above aspects.

In another aspect, a computer readable storage medium is provided having stored thereon program instructions that, when executed by a processor, implement a cell measurement method as described in the above aspects.

DRAWINGS

FIG. 1 is a schematic structural diagram of a mobile communication system according to an embodiment of the present application;

FIG. 2 is a flowchart of a cell measurement method provided by an embodiment of the present application;

FIG. 3 is a flowchart of a cell measurement method provided by an embodiment of the present application;

4 is a schematic diagram showing an implementation of a mobile terminal moving process in a mobile communication system;

FIG. 5 is a flowchart of a cell measurement method provided by another embodiment of the present application;

FIG. 6 is a flowchart of a cell measurement method provided by another embodiment of the present application;

FIG. 7 is a structural block diagram of a cell measurement apparatus according to an embodiment of the present application;

FIG. 8 is a structural block diagram of a cell measurement apparatus according to another embodiment of the present application;

FIG. 9 is a schematic structural diagram of a terminal involved in an exemplary embodiment of the present application.

Detailed ways

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

"Multiple" as referred to herein means two or more. "and/or", describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. The character "/" generally indicates that the contextual object is an "or" relationship.

For ease of understanding, the nouns involved in the embodiments of the present application are explained below.

A serving cell (Serving Cell) includes a primary cell (PCell) and a secondary cell (SCell), and refers to a cell that establishes a Radio Resource Control (RRC) connection with a terminal and provides services for the terminal.

Neighbor Cell (NCell): Also referred to as a neighboring cell, the terminal is currently accessing other cells than the serving cell. When in the RRC idle state, the terminal measures the neighboring cell, and reports the measurement information to the base station, where the base station instructs the terminal to perform cell reselection according to the measurement information; when in the RRC connected state, the terminal measures the neighboring cell and measures The information is reported to the base station, and the base station instructs the terminal to switch between the serving cell and the neighboring cell according to the measurement information.

Please refer to FIG. 1 , which is a schematic structural diagram of a mobile communication system according to an embodiment of the present application. The mobile communication system may be an LTE system or a 5th generation mobile communication (5G), also known as a New Radio (NR) system. The mobile communication system includes an access network device 120 and a terminal 140.

The access network device 120 can be a base station, and the base station can be used to convert the received radio frame with the IP packet message, and can also coordinate the attribute management of the air interface. For example, the base station may be an evolved base station (eNB or e-NodeB) in LTE, or a base station employing a centralized distributed architecture in a 5G system.

Optionally, in the mobile communication system shown in FIG. 1, different access network devices 120 correspond to respective wireless signal coverage ranges (circular areas with the access network device 120 as a center), and the wireless signal coverage is called A cell, and there is an intersection between different cells. In other possible implementation manners, the same access network device 120 may correspond to multiple cells, and each cell corresponds to a different identifier, which is not limited in this embodiment of the present application.

The access network device 120 and the terminal 140 establish a wireless connection through the wireless air interface. Optionally, the wireless air interface is a wireless air interface based on the LTE standard; or the wireless air interface is a wireless air interface based on the 5G standard, for example, the wireless air interface is NR; or the wireless air interface may be a next generation mobile based on 5G. Wireless air interface for communication network technology standards.

Terminal 140 may be a device that provides voice and/or data connectivity to a user. The terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal. For example, it can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device. For example, Subscriber Unit, Subscriber Station, Mobile Station, Mobile, Remote Station, Access Point, Remote Terminal , Access Terminal, User Terminal, User Agent, User Device, or User Equipment.

The cell measurement method provided by the embodiments of the present application is used for the scenario where the terminal 140 performs signal measurement on the neighboring cell in the RRC idle state or the connected state.

In the related art, the terminal determines whether the terminal has moved during the timing according to the signal difference calculated by the timing start time and the timing end time. However, the terminal calculates the signal difference caused by the terminal measurement error or signal fluctuation. May not be accurate. For example, the terminal does not move during the timing period, but is affected by the signal fluctuation at the end of the timing, resulting in a large difference in the calculated signal, and thus erroneously judging that the terminal has moved during the timing, and continues to measure the signal to the neighboring cell. Increased power consumption of the terminal.

Moreover, even in the case where the terminal measurement error and the signal fluctuation are extremely small, the signal difference calculated based on the timing start time and the timing end time cannot accurately reflect the movement state of the terminal in the timing period. For example, as shown in FIG. 1, when the terminal 140 performs signal measurement on the serving cell (the cell corresponding to the upper left access network device 120) and the neighboring cell (the cell corresponding to the upper right and lower access network device 120), the first is enabled. The timer, and during the first timer timing, the terminal 140 moves from location A to location C along path ABC (the dashed path in Figure 1). Since the location A and the location C are adjacent, the terminal 140 calculates the obtained timing start time (when the terminal 140 is at the location A) and the timing termination time (when the terminal 140 is at the location C), the signal difference of the serving cell is small, thereby determining The terminal 140 is in a non-mobile state during the timing and stops signal measurement to the neighboring cell. However, in the actual situation, when the terminal 140 is in the mobile state during the timing period, and the terminal 140 is located at the location B, the signal of the neighboring cell is better than the signal of the serving cell, and the terminal 140 needs to maintain the measurement of the neighboring cell to ensure that the cell handover is normally performed. It can be seen that the related technology cannot accurately identify the moving state of the terminal during the timing period, and it is easy to cause the error or the false opening of the measurement of the neighboring cell.

In order to solve the above problem, in the embodiment of the present application, the terminal calculates the signal measurement value of the serving cell according to the multiple signal measurement results in the measurement period, reduces the influence of the terminal measurement error and the signal fluctuation, and improves the accuracy of the calculation result. In turn, the accuracy of the terminal to stop or turn on the measurement timing of the neighboring cell is improved. The following description is made using the illustrative embodiments. The cell measurement method provided by the embodiment of the present application includes:

Optionally, after the signal measurement of the neighboring cell is stopped in the (i+1)th measurement period, the method further includes:

Performing signal measurement on the serving cell in the (i+1)th measurement period;

Calculating an i+1th signal measurement value of the serving cell according to the cell signal strength of the serving cell in the (i+1)th measurement period;

If the difference between the measured value of the (i+1)th signal of the serving cell and the historical signal value of the serving cell is greater than a threshold, signal measurement is performed on the neighboring cell in the (i+2)th measurement period.

Optionally, after performing signal measurement on the serving cell and the neighboring cell, the method further includes:

Calculating an ith signal measurement value of the neighboring cell according to the cell signal strength of the neighboring cell in the ith measurement period;

If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is less than the threshold, the signal measurement of the neighboring cell is stopped during the (i+1)th measurement period, including:

If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is less than the threshold, and the difference between the measured value of the ith signal of the neighboring cell and the historical signal value of the neighboring cell is less than the threshold, then at the (i+1)th The signal measurement of the neighboring cell is stopped during the measurement period.

Optionally, the ith signal measurement value of the serving cell is calculated according to the cell signal strength of the serving cell in the ith measurement period, including:

Calculating a first signal strength average value of the signal strengths of the n cells corresponding to the serving cell in the i-th measurement period;

The first signal strength average is determined as the ith signal measurement of the serving cell.

Performing interference value filtering on the signal strengths of the n cells corresponding to the serving cell in the ith measurement period, to obtain m cell signal strengths, m ≤ n;

Calculating an average of the second signal strengths of the m cell signal strengths;

The second signal strength average is determined as the ith signal measurement of the serving cell.

Optionally, before performing signal measurement on the serving cell and the neighboring cell, the method further includes:

Obtaining a cell switching frequency within a predetermined duration;

The length of the measurement period is adjusted according to the cell switching frequency, wherein the cell switching frequency is negatively correlated with the length of the measurement period, and the number of times the signal measurement is performed in the measurement period is positively correlated with the length of the measurement period.

Optionally, adjusting the length of the measurement period according to the cell switching frequency, including:

If the cell switching frequency is greater than the frequency threshold, setting the length of the measurement period to the first period length;

If the cell switching frequency is less than the frequency threshold, the length of the measurement period is set to a second period length, and the second period length is greater than the first period length.

Please refer to FIG. 2, which is a flowchart of a cell measurement method according to an embodiment of the present application. This embodiment is described by using the cell measurement method for the terminal shown in FIG. 1 as an example. The method may include the following steps.

Step 201: Perform signal measurement on the serving cell and the neighboring cell, and obtain measurement results corresponding to the serving cell and the neighboring cell, where the measurement result includes the cell signal strength.

In the RRC idle state or the connected state, the terminal separately performs signal measurement on the current access service cell and each neighboring cell, thereby obtaining corresponding measurement results, where the measurement result includes cell signal strength and cell signal quality (such as signal to noise). The signal strength of the cell is represented by Reference Signal Receiving Power (RSRP) and/or Reference Signal Receiving Quality (RSRQ).

In a possible implementation manner, in an idle state or a connected state, the terminal performs a signal measurement on the serving cell and the neighboring cell every predetermined time interval (for example, 460 ms).

Step 202: Calculate an ith signal measurement value of the serving cell according to the cell signal strength of the serving cell in the i-th measurement period, and perform n times signal measurement in each measurement period, i≥1, n≥2, i, n are integers .

In the embodiment of the present application, the terminal performs signal measurement according to a preset measurement period, and the terminal performs signal measurement of a predetermined number of times in each measurement period. For example, the terminal performs 10 signal measurements in each measurement cycle.

After performing the predetermined number of signal measurements in the current measurement period (ie, the ith measurement period), the terminal further calculates the signal measurement value of the serving cell in the current measurement period according to the cell signal strength of the serving cell included in each measurement result (ie, The ith signal measurement value).

In a possible implementation manner, the terminal calculates a first signal strength average value of the n cell signal strengths corresponding to the serving cell in the ith measurement period, and determines the first signal strength average value as the ith signal of the serving cell. Measurements.

Illustratively, the terminal performs 10 signal measurements in the ith measurement period, and obtains 10 cell signal strengths corresponding to the serving cell, respectively: -30 dBm, -31 dBm, -29 dBm, -30 dBm, -29 dBm, - 31.5dBm, -28.5dBm, -30dBm, -30dBm, -31dBm, the terminal is the first signal strength average -30dBm of the 10 cell signal strengths determined as the ith signal measurement value of the serving cell.

In another possible implementation manner, in order to further reduce the impact of the terminal measurement error and the signal fluctuation, the terminal first performs interference value filtering on the n cell signal strengths corresponding to the serving cell in the ith measurement period to obtain m cells. The signal strength, m ≤ n, then calculates a second signal strength average of the m cell signal strengths, and determines the second signal strength average as the ith signal measurement value of the serving cell.

Optionally, the terminal filters the signal strengths of the n cells by using an arithmetic average filtering method, and filters the interference values generated by the terminal measurement error or the signal fluctuation, so as to determine the i-th of the serving cell according to the average signal strength of the residual cell signal strength. Signal measurement. In other possible implementation manners, the terminal may also filter the interference value by using an algorithm such as a limiting filter, a limiting average filtering, or a de-shake filtering, which is not limited by the embodiment of the present invention.

Illustratively, the terminal performs 10 signal measurements in the ith measurement period, and obtains 10 cell signal strengths corresponding to the serving cell, respectively: -30 dBm, -31 dBm, -29 dBm, -39 dBm, -29 dBm, - 31.5dBm, -28.5dBm, -40dBm, -30dBm, -31dBm. The terminal filters the two interference values of -39dBm and -40dBm through the filtering algorithm, and determines the signal strength average -30dBm of the remaining 8 cell signal strengths as the ith signal measurement value of the serving cell.

Step 203: If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is less than the threshold, the signal measurement of the neighboring cell is stopped in the (i+1)th measurement period.

When the terminal is in a non-mobile state, the measured signal strength of the serving cell is usually small. Therefore, after calculating the ith signal measurement value of the serving cell, the terminal calculates the ith signal measurement value and the historical signal of the serving cell. The difference between the values, thereby determining whether the terminal has moved during the ith measurement period based on the difference.

If the calculated difference is less than the threshold, the terminal determines that it is in a non-moving state during the ith measurement period. To reduce the power consumption of the terminal, the terminal performs only the serving cell in the next measurement period (ie, the i+1th measurement period). Signal measurement while stopping signal measurement for neighboring cells.

Illustratively, the terminal calculates that the ith signal measurement value of the serving cell is -30 dBm, and the stored historical signal value is -32 dBm, since the difference between the two is 2 dBm < threshold 5 dBm, therefore, in the i+1th measurement period Within the terminal, the terminal stops performing signal measurement on the neighboring cell.

Optionally, when performing signal measurement in the first measurement period, the terminal sets the cell signal strength included in the first measurement result of the serving cell to a historical signal value; and when performing signal measurement in the jth (j≥2) measurement period. The terminal determines the signal measurement value before the serving cell as the historical signal value.

Step 204: If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is greater than a threshold, performing signal measurement on the neighboring cell in the (i+1)th measurement period, and measuring according to the ith signal of the serving cell The value updates the historical signal value of the serving cell.

When the calculated difference is greater than the threshold, the terminal determines that it is in the mobile state during the ith measurement period, and in order to ensure that the measurement result of the neighboring cell can be measured and reported in the mobile state, so that the access network device performs cell reselection according to the measurement result. Or switching, the terminal continues to perform signal measurement on the serving cell and each neighboring cell in the next measurement period; at the same time, the terminal updates the historical signal value of the serving cell according to the ith signal measurement value of the serving cell, so as to follow the ith signal. The measured value is a reference to determine if the terminal has moved.

Illustratively, the terminal calculates that the ith signal measurement value of the serving cell is -30 dBm, and the stored historical signal value is -36 dBm, because the difference between the two is 6 dBm < threshold 5 dBm, therefore, in the i+1th measurement period Within the terminal, the terminal continues to perform signal measurement on the neighboring cell and updates the historical signal value to -30 dBm.

In other possible implementation manners, when the calculated difference is greater than the threshold, the terminal updates the historical signal value of the serving cell according to the measured value obtained by measuring the nth signal in the ith measurement period.

It should be noted that, after performing signal measurement on the serving cell and the neighboring cell in the (i+1)th measurement period, the terminal uses step 202 to calculate the i+1th signal measurement value of the serving cell, and further measures the value according to the (i+1)th signal. The difference between the value of the historical signal and the value of the historical signal is determined, and the motion state of the terminal in the (i+1)th measurement period is determined, and then whether the neighboring cell measurement is performed in the next measurement period is not described herein.

In summary, in this embodiment, after the terminal performs signal measurement on the serving cell and the neighboring cell in the current measurement period, the terminal calculates the serving cell according to the cell signal strength of the serving cell measured by the n times of the measurement period. Measuring the signal measurement value in the period, and when the difference between the signal measurement value and the historical signal value of the serving cell is small, stopping the measurement of the neighboring cell in the next measurement period, thereby reducing the power consumption of the terminal; When the difference from the historical signal value is large, the neighbor cell signal measurement is continued in the next measurement period to ensure continuous measurement of the neighboring cell in the mobile state of the terminal; and at the same time, the serving cell is calculated based on the multiple signal measurement results in the measurement period. The signal measurement value can reduce the influence of the terminal measurement error and signal fluctuation, improve the accuracy of the calculated signal measurement value, and improve the accuracy of the timing of stopping or turning on the neighbor cell measurement.

When the cell measurement is performed by using the cell measurement method shown in FIG. 2, after the signal measurement of the neighboring cell is stopped in the (i+1)th measurement period, in order to ensure that the terminal can perform the neighbor cell measurement again in the subsequent mobile process, it is possible In the embodiment, on the basis of FIG. 2, as shown in FIG. 3, after the above step 203, the following steps are further included.

Step 205: Perform signal measurement on the serving cell in the (i+1)th measurement period.

In the i+1th measurement period, although the terminal stops performing signal measurement on the neighboring cell, it still needs to perform signal measurement on the serving cell, that is, the terminal obtains n times of measurement corresponding to the serving cell in the (i+1)th measurement period. result.

Step 206: Calculate an i+1th signal measurement value of the serving cell according to the cell signal strength of the serving cell in the (i+1)th measurement period.

Similar to step 202 above, after obtaining the n measurement results corresponding to the serving cell in the (i+1)th measurement period, the terminal calculates the i+1th signal of the serving cell according to the cell signal strength included in the n measurement results. Measurements. The process of calculating the measurement value of the (i+1)th signal is similar to the process of calculating the measurement value of the (i)th signal, and the description is not repeated herein.

After calculating the measured value of the (i+1)th signal, the terminal further calculates a difference between the measured value of the (i+1)th signal and the historical signal value of the serving cell, and determines, according to the magnitude relationship between the difference and the threshold, the terminal at the (i+1)th measurement. The state of movement within the cycle.

Step 207: If the difference between the measured value of the (i+1)th signal of the serving cell and the historical signal value of the serving cell is greater than a threshold, then signal measurement is performed on the neighboring cell in the (i+2)th measurement period.

When the difference between the measured value of the i+1th signal of the serving cell and the historical signal value of the serving cell is greater than the threshold, the terminal determines that it is in the mobile state during the (i+1)th measurement period, and then restarts the neighboring cell in the next measurement period. Signal measurement, so that the terminal performs neighbor cell measurement result reporting.

Step 208: If the difference between the measured value of the (i+1)th signal of the serving cell and the historical signal value of the serving cell is less than the threshold, the signal measurement of the neighboring cell is stopped during the (i+2)th measurement period.

When the difference between the measured value of the i+1th signal of the serving cell and the historical signal value of the serving cell is less than the threshold, the terminal determines that it is in a non-moving state during the (i+1)th measurement period, and then continues to stop the neighbor in the next measurement period. Signal measurement of the cell, thereby reducing the power consumption of the terminal.

In the cell measurement method shown in FIG. 2, when performing signal measurement on the serving cell and the neighboring cell at the same time, the terminal determines whether the terminal moves according to the signal measurement value of the serving cell in the measurement period. In a practical situation, as shown in FIG. 4, the serving cell in which the terminal is located corresponds to the base station 41, and the neighboring cell corresponds to the base station 42 and the base station 43. In a measurement period, when the terminal moves from point A to point B, the terminal It is calculated that the difference between the signal measurement value of the serving cell and the historical signal value is small, it is determined that no movement occurs during the measurement period, and the measurement of the neighboring cell is stopped in the next measurement period. However, the actual situation is that the terminal moves, and the signal of the neighboring cell at point B is better than the signal of the serving cell, and the terminal needs to perform neighbor cell measurement and reporting, so that the base station performs cell handover.

In order to solve the above problem, in a possible implementation manner, the terminal determines whether the terminal moves according to the signal measurement value of the serving cell and the neighboring cell in the measurement period, so as to improve the accuracy of the terminal mobile state determination. On the basis of FIG. 2, as shown in FIG. 5, the above step 201 further includes step 209, step 203 is replaced with step 210, and step 204 is replaced with step 211.

Step 209: Calculate an ith signal measurement value of the neighboring cell according to the cell signal strength of the neighboring cell in the ith measurement period.

Similar to the above step 202, after obtaining the n measurement results corresponding to the neighboring cell in the ith measurement period, the terminal calculates the ith signal measurement value of the neighboring cell according to the cell signal strength included in the n measurement results. The process of calculating the measured value of the ith signal of the neighboring cell is similar to the process of calculating the measured value of the ith signal of the serving cell, and details are not described herein again.

Schematically, the terminal calculates that the measured value of the ith signal of the neighboring cell is -55 dBm.

Step 210: If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is less than a threshold, and the difference between the measured value of the ith signal of the neighboring cell and the historical signal value of the neighboring cell is less than the threshold, then The signal measurement of the neighboring cell is stopped during the i+1 measurement period.

After calculating the ith signal measurement value of the serving cell and the neighboring cell, the terminal separately calculates the difference between the measured value of the ith signal and the respective historical signal value, and determines that the terminal is in the ith measurement period when both differences are smaller than the threshold. It is in a non-moving state and stops measuring signals to neighboring cells in the next measurement period.

Optionally, when performing signal measurement in the first measurement period, the terminal sets the cell signal strength included in the first measurement result of the neighboring cell to a historical signal value; and when performing signal measurement in the jth (j≥2) measurement period. The terminal determines the signal measurement value before the neighboring cell as the historical signal value.

Step 211: If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is greater than a threshold, and/or, the difference between the measured value of the ith signal of the neighboring cell and the historical signal value of the neighboring cell is greater than a threshold, And performing signal measurement on the neighboring cell in the (i+1)th measurement period, and updating the historical signal value of the serving cell according to the ith signal measurement value of the serving cell, and comparing the history of the neighboring cell according to the measured value of the ith signal of the neighboring cell The signal value is updated.

Illustratively, in the communication system shown in FIG. 4, the terminal calculates that the ith signal measurement value of the serving cell is -41 dBm, the ith signal measurement value of the neighboring cell is -39 dBm, and the historical signal value of the serving cell is - 40dBm, the historical signal value of the neighboring cell is -50dBm. Since the difference corresponding to the serving cell is 1 dBm<threshold 5 dBm, and the difference corresponding to the neighboring cell is 11 dBm>the threshold is 5 dBm, the terminal determines that the mobility occurs in the ith measurement period, so that the neighboring cell is in the i+1th measurement period. The signal measurement is performed, and the historical signal value corresponding to the serving cell is updated to -41 dBm, and the historical signal value corresponding to the neighboring cell is updated to -39 dBm.

In this embodiment, the terminal determines whether the terminal moves according to the signal measurement value of the serving cell and the neighboring cell in the measurement period, and improves the accuracy of the terminal mobile state determination, thereby further improving the timing of stopping or starting the neighbor cell measurement by the terminal. The accuracy.

In order to further reduce the power consumption of the terminal, in a possible implementation manner, when the terminal does not perform frequent cell handover, the terminal lengthens the length of the measurement period, so that the terminal is in the stop neighbor cell measurement state for a long time. On the basis of FIG. 2, as shown in FIG. 6, before the above step 201, the following steps are further included.

Step 212: Acquire a cell switching frequency within a predetermined duration.

The terminal acquires the cell handover frequency within the predetermined duration in the RRC idle state or the connected state. The higher the cell handover frequency, the more frequently the terminal switches the cell, that is, the terminal is in the mobile state for a predetermined period of time.

For example, the terminal acquires the cell switching frequency of the terminal in the last 5 seconds as 1 time/second.

Step 213: Adjust the length of the measurement period according to the cell switching frequency, where the cell switching frequency has a negative correlation with the length of the measurement period, and the number of times the signal measurement is performed in the measurement period is positively correlated with the length of the measurement period.

In a possible implementation, the terminal pre-stores the correspondence between the cell switching frequency and the length of the measurement period. After acquiring the cell switching frequency of the terminal, the terminal searches for the length of the corresponding measurement period from the corresponding relationship, and The adjustment is made based on the length of the measurement cycle. The higher the cell switching frequency is, the shorter the length of the measurement period is, the fewer the number of signal measurements are performed in the corresponding measurement period, the lower the cell switching frequency is, the longer the measurement period is, and the signal measurement is performed in the corresponding measurement period. The more times, that is, the more frequent the cell handover, the shorter the time for the terminal to stop the neighbor cell measurement, the less frequent the cell handover, and the longer the terminal stops the measurement of the neighbor cell, thereby reducing the power consumption of the terminal in the non-mobile state. .

In another possible implementation manner, the terminal stores a threshold that triggers measurement period adjustment, and the threshold is a frequency threshold. If the cell switching frequency is greater than the frequency threshold, the terminal sets the length of the measurement period to the first period length; if the cell switching frequency is less than the frequency threshold, the terminal sets the length of the measurement period to the second period length, where the second period length is greater than The length of the first cycle. For example, the frequency threshold is 1 time/second.

It should be noted that the terminal may also set a threshold value of k (k ≥ 2), and set a corresponding period length for the k+1 threshold value interval, which is not limited in this embodiment of the present application.

In this embodiment, the terminal dynamically adjusts the length of the measurement period according to the cell switching frequency, so that the terminal is in the non-mobile state for a long time to stop the neighbor cell measurement state, thereby further reducing the power consumption of the terminal.

Please refer to FIG. 7, which is a structural block diagram of a cell measurement apparatus according to an embodiment of the present invention. The cell measurement apparatus may be implemented as part or all of the terminal 140 shown in FIG. 1 by software, hardware or a combination of both. The apparatus may include a first measurement module 701, a first calculation module 702, a stop module 703, and an update module 704.

The first measurement module 701 is configured to perform signal measurement on the serving cell and the neighboring cell, and obtain a measurement result corresponding to the serving cell and the neighboring cell, where the measurement result includes a cell signal strength;

The first calculation module 702 is configured to calculate, according to the cell signal strength of the serving cell in the ith measurement period, an ith signal measurement value of the serving cell, and perform n times signal measurement in each measurement period, i≥1, N≥2, i, n is an integer;

The stopping module 703 is configured to stop performing signal measurement on the neighboring cell in the (i+1)th measurement period when a difference between the ith signal measurement value of the serving cell and the historical signal value of the serving cell is less than a threshold. ;

The update module 704 is configured to: when the difference between the ith signal measurement value of the serving cell and the historical signal value of the serving cell is greater than the threshold, the neighboring cell in the (i+1)th measurement period Performing signal measurement, and updating a historical signal value of the serving cell according to an ith signal measurement value of the serving cell.

As shown in FIG. 8, the device further includes:

a second measurement module 705, configured to perform signal measurement on the serving cell in the (i+1)th measurement period;

a second calculating module 706, configured to calculate, according to the cell signal strength of the serving cell in the (i+1)th measurement period, an i+1th signal measurement value of the serving cell;

The initiating module 707 is configured to start, in the (i+2)th measurement period, when the difference between the measured value of the (i+1)th signal of the serving cell and the historical signal value of the serving cell is greater than the threshold The cell performs signal measurement.

Optionally, the device further includes:

The third calculating module 708 is configured to calculate, according to the cell signal strength of the neighboring cell in the ith measurement period, an ith signal measurement value of the neighboring cell;

The stopping module 703 is further configured to: when a difference between an ith signal measurement value of the serving cell and a historical signal value of the serving cell is smaller than the threshold, and an ith signal measurement value of the neighboring cell When the difference between the historical signal values of the neighboring cells is less than the threshold, the signal measurement of the neighboring cells is stopped during the (i+1)th measurement period.

Optionally, the first calculating module 702 includes:

a first calculating unit 702A, configured to calculate a first signal strength average of n cell signal strengths corresponding to the serving cell in the ith measurement period

a first determining unit 702B, configured to determine the first signal strength average value as an ith signal measurement value of the serving cell;

or,

The filtering unit 702C is configured to perform interference value filtering on the n cell signal strengths corresponding to the serving cell in the ith measurement period, to obtain m cell signal strengths, m≤n;

a second calculating unit 702D, configured to calculate a second signal strength average value of the m cell signal strengths;

The second determining unit 702E is configured to determine the second signal strength average value as an ith signal measurement value of the serving cell.

Optionally, the device further includes:

The obtaining module 709 is configured to acquire a cell switching frequency within a predetermined duration;

The adjusting module 710 is configured to adjust a length of the measurement period according to the cell switching frequency, where the cell switching frequency has a negative correlation with a length of the measurement period, and the number of signal measurements and the measurement period in the measurement period The length is positively correlated.

Optionally, the adjusting module 710 includes:

The first setting unit 710A is configured to set a length of the measurement period to a first period length if the cell switching frequency is greater than a frequency threshold;

The second setting unit 710B is configured to set a length of the measurement period to a second period length if the cell switching frequency is less than the frequency threshold, and the second period length is greater than the first period length.

FIG. 8 is a schematic structural diagram of a terminal involved in an exemplary embodiment of the present application. The terminal includes a processor 811, a receiver 812, a transmitter 813, a memory 814, and a bus 815.

The processor 811 includes one or more processing cores. The memory 814 is coupled to the processor 811 via a bus 815. The memory 814 is configured to store program instructions. When the processor 811 executes the program instructions in the memory 814, the processor provides the cells provided by the foregoing method embodiments. Measurement methods.

Alternatively, memory 814 may be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.

Receiver 812 and transmitter 813 are coupled to processor 811 via bus 815, respectively. Optionally, processor 811 executes program instructions in memory 814 to control receiver 812 and transmitter 813 for serving cell and neighbor cell measurements.

Receiver 812 and transmitter 813 can be implemented as a communication component, which can be a communication chip for modulating and/or demodulating information and receiving or transmitting the information over a wireless signal.

The foregoing structure is only a schematic description of the terminal. The terminal may include more or fewer components. For example, the terminal may not include a transmitter, or the terminal may further include other components such as a sensor, a display, a power supply, and the like. Let me repeat.

The embodiment of the present application further provides a computer readable storage medium, on which program instructions are stored, and when the program instructions are executed by the processor 811, the cell measurement method provided by the foregoing various method embodiments is implemented.

The serial numbers of the embodiments of the present application are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. Within the scope.

Claims

A cell measurement method, the method comprising:

Performing signal measurement on the serving cell and the neighboring cell, and obtaining a measurement result corresponding to each of the serving cell and the neighboring cell, where the measurement result includes a cell signal strength;

Calculating an ith signal measurement value of the serving cell according to a cell signal strength of the serving cell in the ith measurement period, and performing n times signal measurement in each measurement period, i≥1, n≥2, i, n is Integer

If the difference between the ith signal measurement value of the serving cell and the historical signal value of the serving cell is less than a threshold, stopping performing signal measurement on the neighboring cell in the (i+1)th measurement period;

If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is greater than the threshold, performing signal measurement on the neighboring cell in the (i+1)th measurement period, and according to The ith signal measurement value of the serving cell updates a historical signal value of the serving cell.
The method according to claim 1, wherein after the signal measurement of the neighboring cell is stopped in the (i+1)th measurement period, the method further includes:

Performing signal measurement on the serving cell in the (i+1)th measurement period;

Calculating, according to the cell signal strength of the serving cell in the (i+1)th measurement period, an i+1th signal measurement value of the serving cell;

And if the difference between the measured value of the (i+1)th signal of the serving cell and the historical signal value of the serving cell is greater than the threshold, starting to perform signal measurement on the neighboring cell in the (i+2)th measurement period.
The method according to claim 1 or 2, wherein after the signal measurement is performed on the serving cell and the neighboring cell, the method further includes:

Calculating an ith signal measurement value of the neighboring cell according to the cell signal strength of the neighboring cell in the ith measurement period;

If the difference between the ith signal measurement value of the serving cell and the historical signal value of the serving cell is less than a threshold, stopping measuring the neighboring cell in the (i+1)th measurement period, including:

If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is less than the threshold, and the difference between the measured value of the ith signal of the neighboring cell and the historical signal value of the neighboring cell If the value is less than the threshold, the signal measurement of the neighboring cell is stopped during the (i+1)th measurement period.
The method according to claim 1 or 2, wherein the calculating the ith signal measurement value of the serving cell according to the cell signal strength of the serving cell in the ith measurement period comprises:

Calculating a first signal strength average value of the n cell signal strengths corresponding to the serving cell in the ith measurement period;

The first signal strength average is determined as the ith signal measurement value of the serving cell.
The method according to claim 1 or 2, wherein the calculating the ith signal measurement value of the serving cell according to the cell signal strength of the serving cell in the ith measurement period comprises:

Performing interference value filtering on the n cell signal strengths corresponding to the serving cell in the ith measurement period, to obtain m cell signal strengths, m≤n;

Calculating an average of the second signal strengths of the signal strengths of the m cells;

The second signal strength average is determined as the ith signal measurement value of the serving cell.
The method according to claim 1 or 2, wherein before the performing signal measurement on the serving cell and the neighboring cell, the method further includes:

Obtaining a cell switching frequency within a predetermined duration;

The length of the measurement period is adjusted according to the cell switching frequency, wherein the cell switching frequency has a negative correlation with the length of the measurement period, and the number of times the signal measurement is performed in the measurement period is positively correlated with the length of the measurement period.
The method according to claim 6, wherein the adjusting the length of the measurement period according to the cell switching frequency comprises:

If the cell switching frequency is greater than a frequency threshold, setting a length of the measurement period to a first period length;

And if the cell switching frequency is less than the frequency threshold, setting a length of the measurement period to a second period length, where the second period length is greater than the first period length.
A cell measuring device, characterized in that the device comprises:

a first measurement module, configured to perform signal measurement on the serving cell and the neighboring cell, to obtain a measurement result corresponding to the serving cell and the neighboring cell, where the measurement result includes a cell signal strength;

a first calculating module, configured to calculate, according to a cell signal strength of the serving cell in the ith measurement period, an ith signal measurement value of the serving cell, and perform n times signal measurement in each measurement period, i≥1, n ≥ 2, i, n are integers;

And stopping, when the difference between the ith signal measurement value of the serving cell and the historical signal value of the serving cell is less than a threshold, stopping performing signal measurement on the neighboring cell in the (i+1)th measurement period;

And an update module, configured to: when the difference between the ith signal measurement value of the serving cell and the historical signal value of the serving cell is greater than the threshold, perform the neighboring cell in the (i+1)th measurement period The signal is measured, and the historical signal value of the serving cell is updated according to the ith signal measurement value of the serving cell.
The device according to claim 8, wherein the device further comprises:

a second measurement module, configured to perform signal measurement on the serving cell in the (i+1)th measurement period;

a second calculating module, configured to calculate, according to a cell signal strength of the serving cell in the (i+1)th measurement period, an i+1th signal measurement value of the serving cell;

And activating, when the difference between the measured value of the (i+1)th signal of the serving cell and the historical signal value of the serving cell is greater than the threshold, starting the neighboring cell in the i+2 measurement period Perform signal measurements.
The device according to claim 8 or 9, wherein the device further comprises:

a third calculating module, configured to calculate, according to the cell signal strength of the neighboring cell in the ith measurement period, an ith signal measurement value of the neighboring cell;

The stopping module is further configured to: when a difference between an ith signal measurement value of the serving cell and a historical signal value of the serving cell is smaller than the threshold, and an ith signal measurement value of the neighboring cell and the When the difference between the historical signal values of the neighboring cells is less than the threshold, the signal measurement of the neighboring cells is stopped during the (i+1)th measurement period.
The device according to claim 8 or 9, wherein the first calculating module comprises:

a first calculating unit, configured to calculate a first signal strength average value of n cell signal strengths corresponding to the serving cell in the ith measurement period;

And a first determining unit, configured to determine the first signal strength average value as an ith signal measurement value of the serving cell.
The device according to claim 8 or 9, wherein the first calculating module comprises:

a filtering unit, configured to perform interference value filtering on the signal strengths of the n cells corresponding to the serving cell in the ith measurement period, to obtain m cell signal strengths, where m ≤ n;

a second calculating unit, configured to calculate a second signal strength average value of the m cell signal strengths;

And a second determining unit, configured to determine the second signal strength average value as an ith signal measurement value of the serving cell.
The device according to claim 8 or 9, wherein the device further comprises:

An acquiring module, configured to acquire a cell switching frequency within a predetermined duration;

And an adjustment module, configured to adjust a length of the measurement period according to the cell switching frequency, where the cell switching frequency is negatively correlated with a length of the measurement period, and the number of signal measurements and the length of the measurement period in the measurement period Positive correlation.
The apparatus according to claim 13, wherein the adjustment module comprises:

a first setting unit, configured to set a length of the measurement period to a first period length if the cell switching frequency is greater than a frequency threshold;

And a second setting unit, configured to set a length of the measurement period to a second period length, where the second period length is greater than the first period length, if the cell switching frequency is less than the frequency threshold.
A terminal, comprising: a processor, a memory connected to the processor, and program instructions stored on the memory, wherein the processor is configured to implement the following method when executing the program instruction:

Performing signal measurement on the serving cell and the neighboring cell, and obtaining a measurement result corresponding to each of the serving cell and the neighboring cell, where the measurement result includes a cell signal strength;

Calculating an ith signal measurement value of the serving cell according to a cell signal strength of the serving cell in the ith measurement period, and performing n times signal measurement in each measurement period, i≥1, n≥2, i, n is Integer

If the difference between the ith signal measurement value of the serving cell and the historical signal value of the serving cell is less than a threshold, stopping performing signal measurement on the neighboring cell in the (i+1)th measurement period;

If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is greater than the threshold, performing signal measurement on the neighboring cell in the (i+1)th measurement period, and according to The ith signal measurement value of the serving cell updates a historical signal value of the serving cell.
The terminal according to claim 15, wherein after the signal measurement of the neighboring cell is stopped in the (i+1)th measurement period, the processor is further configured to:

Performing signal measurement on the serving cell in the (i+1)th measurement period;

Calculating, according to the cell signal strength of the serving cell in the (i+1)th measurement period, an i+1th signal measurement value of the serving cell;

And if the difference between the measured value of the (i+1)th signal of the serving cell and the historical signal value of the serving cell is greater than the threshold, starting to perform signal measurement on the neighboring cell in the (i+2)th measurement period.
The terminal according to claim 15 or 16, wherein after the signal measurement is performed on the serving cell and the neighboring cell, the processor is further configured to:

Calculating an ith signal measurement value of the neighboring cell according to the cell signal strength of the neighboring cell in the ith measurement period;

If the difference between the ith signal measurement value of the serving cell and the historical signal value of the serving cell is less than a threshold, stopping measuring the neighboring cell in the (i+1)th measurement period, including:

If the difference between the measured value of the ith signal of the serving cell and the historical signal value of the serving cell is less than the threshold, and the difference between the measured value of the ith signal of the neighboring cell and the historical signal value of the neighboring cell If the value is less than the threshold, the signal measurement of the neighboring cell is stopped during the (i+1)th measurement period.
The terminal according to claim 15 or 16, wherein the processor is used to calculate an ith signal measurement value of the serving cell according to a cell signal strength of the serving cell in an ith measurement period, :

Calculating a first signal strength average value of the n cell signal strengths corresponding to the serving cell in the ith measurement period;

The first signal strength average is determined as the ith signal measurement value of the serving cell.
The terminal according to claim 15 or 16, wherein the processor is used to calculate an ith signal measurement value of the serving cell according to a cell signal strength of the serving cell in an ith measurement period, :

Performing interference value filtering on the n cell signal strengths corresponding to the serving cell in the ith measurement period to obtain m cell signal strengths, m≤n;

Calculating an average of the second signal strengths of the signal strengths of the m cells;

The second signal strength average is determined as the ith signal measurement value of the serving cell.
The terminal according to claim 15 or 16, wherein before the performing signal measurement on the serving cell and the neighboring cell, the processor is further configured to:

Obtaining a cell switching frequency within a predetermined duration;

The length of the measurement period is adjusted according to the cell switching frequency, wherein the cell switching frequency has a negative correlation with the length of the measurement period, and the number of times the signal measurement is performed in the measurement period is positively correlated with the length of the measurement period.
The terminal according to claim 20, wherein when the length of the measurement period is adjusted according to the cell switching frequency, the processor is further configured to:

If the cell switching frequency is greater than a frequency threshold, setting a length of the measurement period to a first period length;

And if the cell switching frequency is less than the frequency threshold, setting a length of the measurement period to a second period length, where the second period length is greater than the first period length.
A computer readable storage medium having stored thereon program instructions, the program instructions being executed by a processor to implement the cell measurement method according to any one of claims 1 to 7.