CN112333743A - Neighbor cell measurement method and device, storage medium and terminal - Google Patents

Neighbor cell measurement method and device, storage medium and terminal Download PDF

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Publication number
CN112333743A
CN112333743A CN202011323083.XA CN202011323083A CN112333743A CN 112333743 A CN112333743 A CN 112333743A CN 202011323083 A CN202011323083 A CN 202011323083A CN 112333743 A CN112333743 A CN 112333743A
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statistical time
time period
preset
measurement interval
neighbor cell
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CN112333743B (en
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朱建东
黄利军
杨江
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Unisoc Chongqing Technology Co Ltd
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Unisoc Chongqing Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method and device for measuring adjacent regions, a storage medium and a terminal are provided, the method comprises the following steps: in a C-DRX inactive period, if a neighbor cell measurement task in the C-DRX active period is not finished, determining the motion state of a terminal by adopting a preset statistical time period, wherein the motion state comprises a motion state and a static state; and determining the measurement interval for carrying out neighbor cell measurement in the current statistical time period according to the motion state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period for each statistical time period in sequence from the first statistical time period in the C-DRX inactive period. The invention can improve the flexibility and autonomy of the measurement interval setting, and can meet the mobility requirement of the terminal and reduce the power consumption of the terminal.

Description

Neighbor cell measurement method and device, storage medium and terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for measuring a neighbor cell, a storage medium, and a terminal.
Background
According to the requirements of Long Term Evolution (LTE) communication and a New Radio (NR) protocol, a Network side device (Network) allocates a predefined Measurement interval (Measurement GAP) to a Terminal (Terminal) served by the Network side device, and in the predefined Measurement interval, the Terminal does not need to receive and transmit an uplink and downlink traffic channel, a control channel or a reference signal, but only performs neighbor cell Measurement.
With the rapid development of the internet of things, Machine-Type Communication (MTC) is an important component of the internet of things and is receiving more and more attention from people, and application scenarios thereof cover all industries, such as medical care systems, smart homes, logistics tracking, sharing of single vehicles, low-speed movement and the like. Furthermore, an important feature of MTC terminals is low power consumption, requiring products with battery life of up to several years.
In LTE system design, in order to save power and efficiently utilize resources for a terminal, the 3GPP protocol introduces a Continuous-Discontinuous Reception (C-DRX) characteristic in a Continuous state, that is, introduces a Discontinuous Reception (DRX) mode in a Radio Resource Control (RRC) connection state. The network configures a C-DRX period for the terminal, and each DRX period comprises active time and inactive time. And in the activation time, the terminal can transmit uplink and downlink data. During the inactive time, the terminal may then enter a sleep state.
The existing solution is to use the measurement GAP contained in the inactive period of C-DRX to perform measurement scheduling. The terminal calculates the contained complete measurement GAP according to the time length of the C-DRX inactive period, transfers the complete measurement GAP to the end of the last active period or the start of the next active period for combination, and performs the inter-frequency cell measurement in the combined measurement GAP, or performs the inter-frequency cell or inter-system measurement by using the idle time of the C-DRX inactive period only when the network configures a short DRX period and the signal quality of the resident cell is poor.
However, as MTC terminals are in a continuous rich application scenario, requirements for mobility in a connected state and C-DRX power consumption are more and more stringent, and it is not sufficient to perform neighbor cell measurement only by using predefined measurement intervals allocated by network side equipment, which is difficult to meet requirements for terminal mobility and terminal power consumption reduction.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method and a device for measuring adjacent regions, a storage medium and a terminal, which can improve the flexibility and the autonomy of the setting of the measurement interval, have an opportunity to meet the mobility requirement of the terminal and reduce the power consumption of the terminal.
In order to solve the above technical problem, an embodiment of the present invention provides a neighbor cell measurement method, including: in a C-DRX inactive period, if a neighbor cell measurement task in the C-DRX active period is not finished, determining the motion state of a terminal by adopting a preset statistical time period, wherein the motion state comprises a motion state and a static state; and determining the measurement interval for carrying out neighbor cell measurement in the current statistical time period according to the motion state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period for each statistical time period in sequence from the first statistical time period in the C-DRX inactive period.
Optionally, determining a measurement interval for performing neighbor cell measurement in the current statistical time period includes: if the terminal is in a running state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period, adopting a predefined measurement interval to carry out neighbor cell measurement in the current statistical time period; wherein the predefined measurement interval comprises a communication protocol specified measurement interval.
Optionally, determining a measurement interval for performing neighbor cell measurement in the current statistical time period includes: if the terminal is in a static state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period, adopting a preset measurement interval to carry out neighbor cell measurement in the current statistical time period; or, if the terminal is in a dynamic state in a preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period and is in a static state in the latest statistical time period in the C-DRX inactive period, performing neighbor cell measurement in the current statistical time period by adopting a preset measurement interval; wherein the preset measurement interval comprises one or more of: a preset measurement interval starting position, a preset measurement interval length, a preset measurement interval period and a preset measurement interval offset.
Optionally, the neighboring cell measurement method further includes: when the neighbor cell measurement task is completed in the C-DRX inactive period, determining a motion state in the latest statistical time period; and if the motion state in the latest statistical time period is still static, entering sleep for the rest duration of the C-DRX inactive period.
Optionally, before determining the measurement interval for performing the neighbor cell measurement in the current statistical time period, the neighbor cell measurement method further includes: and determining the preset measurement interval offset as a standard offset value of a measurement interval specified by a communication protocol.
Optionally, before determining the measurement interval for performing the neighbor cell measurement in the current statistical time period, the neighbor cell measurement method further includes: determining the preset measurement interval starting position, wherein the preset measurement interval starting position comprises one or more of the following items: the system frame number of the preset measurement interval starting position, the subframe number of the preset measurement interval starting position and the frame number of the preset measurement interval starting position; wherein, the system frame number of the preset measurement interval starting position satisfies the following formula:
SFN mod (GAP period/RadioFrameLen) ═ FLOOR (gapOffset/RadioFrameLen);
determining the subframe number of the preset measurement interval starting position by adopting the following formula:
subframe＝gapOffset mod RadioFrameLen；
determining the frame number of the preset measurement interval starting position by adopting the following formula:
SSFN＝SFN*RadioFrameLen+subframe；
the SFN is used to indicate a system frame number of the preset measurement interval starting position, mod is used to indicate a remainder operator, FLOOR () is used to indicate rounding-down, gapOffset is used to indicate the preset measurement interval offset, the GAP period is used to indicate a preset measurement interval period, RadioFrame _ Len is used to indicate a length of a radio frame, subframe is used to indicate a subframe number of the preset measurement interval starting position, and SSFN is used to indicate a frame number of the preset measurement interval starting position.
Optionally, determining a measurement interval for performing neighbor cell measurement in the current statistical time period includes: if the terminal is in a static state in a preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period and is in a dynamic state in the latest statistical time period in the C-DRX inactive period, adopting a predefined measurement interval to carry out neighbor cell measurement in the current statistical time period;
wherein the predefined measurement interval comprises a communication protocol specified measurement interval.
Optionally, each statistical time period is divided into a plurality of sliding windows; the method for determining the motion state of the terminal by adopting the preset statistical time period comprises the following steps: respectively determining the maximum value and the minimum value of the preset signal quality parameter of the currently resident serving cell in each sliding window of the preset statistical time period to be calculated; determining a maximum value in the maximum values of the preset signal quality parameters of each sliding window, determining a minimum value in the minimum values of the preset signal quality parameters of each sliding window, and calculating the difference value between the maximum value and the minimum value; if the difference is larger than or equal to a preset threshold, determining that the motion state of the terminal is a motion state; and if the difference is smaller than a preset threshold, determining that the motion state of the terminal is a static state.
To solve the above technical problem, an embodiment of the present invention provides a neighbor cell measurement apparatus, including: the motion state determining module is used for determining the motion state of the terminal by adopting a preset statistical time period if the neighbor cell measurement task in the C-DRX activation period is not completed in the C-DRX non-activation period, wherein the motion state comprises a motion state and a static state; and the measurement interval determining module is used for determining the measurement interval for carrying out neighbor cell measurement in the current statistical time period according to the motion state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period for each statistical time period in sequence from the first statistical time period in the C-DRX inactive period.
To solve the foregoing technical problem, an embodiment of the present invention provides a storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the foregoing neighbor cell measurement method.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores a computer program capable of running on the processor, and the processor executes the steps of the neighbor cell measurement method when running the computer program.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, under the condition that the adjacent cell measurement task in the C-DRX activation period is not completed, the motion state of the terminal is determined, and then the measurement interval for carrying out the adjacent cell measurement in the current statistical time period is determined according to the motion state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period.
Further, under the condition that the terminal is in operation state in the latest statistical time period in the C-DRX inactive period and the preset number of statistical time periods before the latest statistical time period, the measurement interval specified by the communication protocol is adopted, so that the higher measurement frequency can be utilized, the mobility requirement of the terminal can be met, and the communication quality can be improved.
Further, if the terminal is in a static state in the latest statistical time period in the C-DRX inactive period and the preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period, performing neighbor cell measurement in the current statistical time period by using a preset measurement interval, or if the terminal is in a dynamic state in the preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period and is in a static state in the latest statistical time period in the C-DRX inactive period, performing neighbor cell measurement in the current statistical time period by using a preset measurement interval, by using the scheme of the embodiment of the present invention, when the terminal is in a static state, performing neighbor cell measurement by using the preset measurement interval in the C-DRX inactive period, which is helpful for selecting a more appropriate measurement interval, which can both meet the mobility requirement of the terminal, and the power consumption of the terminal can be reduced.
Further, when the neighbor cell measurement task is completed in the C-DRX inactive period, determining the motion state in the latest statistical time period; if the motion state in the latest statistical time period is still static, the terminal enters sleep in the rest duration of the C-DRX inactive period.
Further, by setting a standard offset value for determining that the offset of the preset measurement interval is the measurement interval specified by the communication protocol, the offset information of the preset measurement interval can be aligned with the measurement interval determined by the communication protocol, which is beneficial to improving the adaptability and consistency between the embodiment of the application and the prior art.
Further, a preset formula is adopted to determine the system frame number of the preset measurement interval starting position, the subframe number of the preset measurement interval starting position and the frame number of the preset measurement interval starting position, and compared with the method of randomly determining the preset measurement interval starting position, the method can improve the accuracy of starting position setting and improve the adaptability and consistency between the embodiment of the application and the prior art.
Further, by setting sliding windows, a maximum value, a minimum value and a difference value are determined according to the maximum value and the minimum value of the preset signal quality parameters in each sliding window, so that the operability is improved, and the accuracy of determining the motion state is improved.
Drawings
Fig. 1 is a flowchart of a method for measuring a neighboring cell according to an embodiment of the present invention;
fig. 2 is a schematic view of a working scenario of a first neighbor cell measurement method in an embodiment of the present invention;
fig. 3 is a schematic view of a working scenario of a second neighbor cell measurement method in the embodiment of the present invention;
fig. 4 is a schematic view of a working scenario of a third neighboring cell measurement method in the embodiment of the present invention;
fig. 5 is a schematic view of a working scenario of a fourth neighboring cell measurement method in the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a neighbor cell measurement apparatus in an embodiment of the present invention.
Detailed Description
As described above, with the application scenarios of MTC terminals becoming rich, requirements for mobility in a connected state and C-DRX power consumption become more and more stringent, and it is not sufficient to perform neighbor cell measurement only by means of predefined measurement intervals allocated by network side equipment, which is difficult to meet the requirements for terminal mobility and terminal power consumption reduction.
Specifically, due to the characteristic requirements of the MTC system such as low mobility and low power consumption, especially, an enhanced-Machine-Type Communication (e-MTC) system is introduced into the 3GPP R13, and under the enhanced coverage scenario, more measurement GAPs are required for measuring the neighboring cell to ensure the measurement performance of the terminal. When the network configures the C-DRX, if the pilot frequency cell only uses the included protocol GAP for measurement in the inactive state of the C-DRX, the measurement time in the inactive state of the C-DRX is long, and the power consumption of the terminal is increased; if the protocol GAP contained in the C-DRX inactive period is not used, the MTC terminal cannot meet the mobility requirement under the condition that the C-DRX inactive period is longer.
The inventor of the present invention has further studied and found that, although the time of the measurement process can be shortened only by using the measurement interval specified by the communication protocol, that is, by using the measurement interval included in the C-DRX inactive period, the mobility performance of the terminal, especially the enhanced coverage requirement of the eMTC terminal, cannot be guaranteed; and based on the short DRX period configuration, the idle time in the C _ DRX inactive period is utilized to carry out pilot frequency measurement or inter-system measurement, so that the mobility of the terminal can be ensured, but when the network configures the long DRX period, because of the overlong duration measurement, the power consumption of the terminal is difficult to reduce.
In the embodiment of the invention, under the condition that the adjacent cell measurement task in the C-DRX activation period is not completed, the motion state of the terminal is determined, and then the measurement interval for carrying out the adjacent cell measurement in the current statistical time period is determined according to the motion state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period.
Referring to fig. 1, fig. 1 is a flowchart of a neighbor cell measurement method in an embodiment of the present invention. The neighbor cell measurement method may include steps S11 to S12:
step S11: in a C-DRX inactive period, if a neighbor cell measurement task in the C-DRX active period is not finished, determining the motion state of a terminal by adopting a preset statistical time period, wherein the motion state comprises a motion state and a static state;
step S12: and determining the measurement interval for carrying out neighbor cell measurement in the current statistical time period according to the motion state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period for each statistical time period in sequence from the first statistical time period in the C-DRX inactive period.
In a specific implementation of step S11, the motion state of the terminal may be identified according to the preset signal quality parameter.
Further, the preset signal quality parameter may be selected from one or more parameters, and may be obtained by performing a weighted operation on parameter values of two or more parameters.
In particular, the preset signal quality parameter may be selected from: reference Signal Received Power (RSRP), Received Signal Strength Indication (RSSI), and Signal to Interference plus Noise Ratio (Sinr).
Specifically, the motion state of the terminal, which is a "motion state" or a "static state", may be identified according to the signal quality change condition of the serving cell.
It should be noted that, in the embodiment of the present application, the motion state is a relative state, "still" does not necessarily mean absolute still, and is also applicable to a scenario with a low moving speed, "motion" does not necessarily mean absolute motion, and when the terminal is in a still state, a sudden change occurs in a signal, which may also be referred to as "motion state".
Further, the step of determining the motion state of the terminal itself by using the preset statistical time period may include: respectively determining the maximum value and the minimum value of the preset signal quality parameter of the currently resident serving cell in each sliding window of the preset statistical time period to be calculated; determining a maximum value in the maximum values of the preset signal quality parameters of each sliding window, determining a minimum value in the minimum values of the preset signal quality parameters of each sliding window, and calculating the difference value between the maximum value and the minimum value; if the difference is larger than or equal to a preset threshold, determining that the motion state of the terminal is a motion state; and if the difference is smaller than a preset threshold, determining that the motion state of the terminal is a static state.
Specifically, in a specific implementation, the preset statistical time period length and the smoothing window length may be determined first.
More specifically, the Time length Time _ Statis for counting the signal quality of the serving cell, the length Win _ Len of the sliding window, the window sliding Step length Step _ Len, the value range of (1, Win _ Len), and the unit of ms may be set according to the processing capability of the terminal.
Next, the maximum and minimum signal quality of the serving cell in each sliding window may be counted by using preset signal quality parameters, for example, the parameter RSRP is taken as an example and may be denoted as maxrrp (i) and minrsrp (i), where i is the number of the sliding windows.
Next, we can use step2.3: acquiring the maximum value and the minimum value of the serving cell signal quality RSRP of a statistical Time period Time _ Statis, and recording the maximum value and the minimum value as MaxRSRP _ Timer and MinRSRP _ Timer, wherein:
MaxRSRP_Timer＝max(MaxRSRP(i))
MinRSRP_Timer＝min(MinRSRP(i))
finally, the motion state of the terminal can be judged according to the MaxRSRP _ Timer and the MinRSRP _ Timer.
Specifically, if maxrrp _ Timer-MinRSRP _ Timer > a preset threshold, the UE in the time period is considered to be in "dynamic state", otherwise, the UE in the time period is considered to be in "static state".
The preset threshold value can be set according to the terminal capability, so that the degree of freedom of the embodiment of the scheme is improved.
In the embodiment of the invention, by setting the sliding windows, the maximum value, the minimum value and the difference value are determined according to the maximum value and the minimum value of the preset signal quality parameters in each sliding window, so that the operability is improved, and the accuracy of determining the motion state is improved.
In a specific implementation of step S12, sequentially for each statistical time period from a first statistical time period in the C-DRX inactivity period, determining a measurement interval for performing neighbor cell measurement in a current statistical time period according to a motion state in a latest statistical time period and a preset number of statistical time periods before the latest statistical time period.
It should be noted that, the measurement interval for performing the neighbor measurement in the current statistical time period may adopt a predefined measurement interval, for example, a measurement interval specified by a communication protocol; preset measurement intervals may also be used, for example, measurement intervals divided by the terminal according to actual needs.
Further, before determining the measurement interval for performing the neighbor cell measurement within the current statistical time period, the method may further include: and determining the preset measurement interval offset as a standard offset value of a measurement interval specified by a communication protocol.
Specifically, according to the requirement of the measurement task of the neighboring cell, the detailed information of the preset measurement interval (GAP) may be configured reasonably, where the preset measurement interval may include one or more of the following: a preset measurement interval starting position, a preset measurement interval length, a preset measurement interval period and a preset measurement interval offset. The preset measurement interval offset may be set to be the same as the predefined measurement interval offset if alignment of the predefined measurement interval (e.g., the measurement interval specified by the communication protocol) is required.
In the embodiment of the present invention, by setting and determining the offset of the preset measurement interval as the standard offset value of the measurement interval specified by the communication protocol, the offset information of the preset measurement interval can be aligned with the measurement interval determined by the communication protocol, which is beneficial to improving the adaptability and consistency between the embodiment of the present application and the prior art.
Further, the latest preset measurement interval starting position in the C-DRX inactive period can be calculated according to the C-DRX inactive period and the preset measurement interval configuration information.
In a specific implementation, before determining a measurement interval for performing neighbor cell measurement in a current statistical time period, the method may further include: determining the preset measurement interval starting position, wherein the preset measurement interval starting position comprises one or more of the following items: the system frame number of the preset measurement interval starting position, the subframe number of the preset measurement interval starting position and the frame number of the preset measurement interval starting position; wherein, the system frame number of the preset measurement interval starting position may satisfy the following formula: SFN mod (GAP period/RadioFrameLen) ═ FLOOR (gapOffset/RadioFrameLen);
determining the subframe number of the preset measurement interval starting position by adopting the following formula:
subframe＝gapOffset mod RadioFrameLen；
determining the frame number of the preset measurement interval starting position by adopting the following formula:
SSFN＝SFN*RadioFrameLen+subframe；
the SFN is used to indicate a system frame number of the preset measurement interval starting position, mod is used to indicate a remainder operator, FLOOR () is used to indicate rounding-down, gapOffset is used to indicate the preset measurement interval offset, the GAP period is used to indicate a preset measurement interval period, RadioFrame _ Len is used to indicate a length of a radio frame, subframe is used to indicate a subframe number of the preset measurement interval starting position, and SSFN is used to indicate a frame number of the preset measurement interval starting position.
It should be noted that the gapOffset may be flexibly configured according to the requirement of the neighbor measurement task, the value range of the gapOffset may be (0, GAP period), and the length of the radio frame may be determined according to network information, for example, may be 10 ms.
In the embodiment of the invention, the system frame number of the preset measurement interval starting position, the subframe number of the preset measurement interval starting position and the frame number of the preset measurement interval starting position are determined by adopting a preset formula, so that compared with the method of randomly determining the preset measurement interval starting position, the accuracy of the starting position setting can be improved, and the adaptability and consistency between the embodiment of the application and the prior art are improved.
It should be noted that, the above steps of determining the preset measurement interval offset and determining the preset measurement interval starting position may be performed before step S11, and may also be performed between step S11 and step S12, and in the embodiment of the present invention, the order of performing the above steps is not limited.
In a specific implementation of step S12, a measurement interval for performing the neighbor cell measurement within the current statistical time period may be determined according to a motion state of the terminal (e.g., a persistent motion state, a persistent static state, a transition from a motion state to a static state, and a transition from a static state to a motion state), so as to reasonably schedule the neighbor cell measurement task.
In a specific implementation manner of the embodiment of the present invention, the step of determining a measurement interval for performing neighbor cell measurement in a current statistical time period may include: if the terminal is in a running state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period, adopting a predefined measurement interval to carry out neighbor cell measurement in the current statistical time period; wherein the predefined measurement interval comprises a communication protocol specified measurement interval.
Referring to fig. 2, fig. 2 is a schematic view of a working scenario of a first neighbor cell measurement method in the embodiment of the present invention.
As shown in fig. 2, during the C-DRX inactive period, according to the "moving state" that identifies that the moving state of the terminal is persistent, neighbor cell measurement is performed at a measurement interval specified by a communication protocol, so as to ensure the mobility performance of the terminal, and to help improve the adaptability and consistency between the embodiment of the present application and the prior art.
It should be noted that period shown in fig. 2 and subsequent fig. 3 to 5 is a periodic schematic of a measurement interval specified by a communication protocol, and is 40ms or 80ms for comparison with a preset measurement interval period in the embodiment of the present application.
In the embodiment of the invention, under the condition that the terminal is in operation state in the latest statistical time period in the C-DRX inactive period and the preset number of statistical time periods before the latest statistical time period, the measurement interval specified by the communication protocol is adopted, so that the higher measurement frequency can be utilized, the mobility requirement of the terminal can be met, and the communication quality can be improved.
In another specific implementation manner of the embodiment of the present invention, the step of determining a measurement interval for performing neighbor cell measurement in a current statistical time period may include: if the terminal is in a static state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period, adopting a preset measurement interval to carry out neighbor cell measurement in the current statistical time period; or, if the terminal is in a dynamic state in a preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period and is in a static state in the latest statistical time period in the C-DRX inactive period, performing neighbor cell measurement in the current statistical time period by adopting a preset measurement interval; wherein the preset measurement interval comprises one or more of: a preset measurement interval starting position, a preset measurement interval length, a preset measurement interval period and a preset measurement interval offset.
Referring to fig. 3, fig. 3 is a schematic view of a working scenario of a second neighbor cell measurement method in the embodiment of the present invention.
As shown in fig. 3, in the C-DRX inactive period, according to the fact that the motion state of the terminal is identified as a persistent "static state", if the neighboring cell measurement task is not completed in the active period, the neighboring cell measurement may be performed at the idle time of the C-DRX inactive period by using a preset measurement interval.
By adopting the scheme of the embodiment of the invention, when the terminal is in a static state, the neighbor cell measurement is carried out by utilizing the preset measurement interval in the C-DRX inactive period, which is beneficial to selecting a more proper measurement interval, not only can the requirement of the mobility of the terminal be met, but also the power consumption of the terminal can be reduced.
Referring to fig. 4, fig. 4 is a schematic view of a working scenario of a third neighboring cell measurement method in the embodiment of the present invention.
As shown in fig. 4, in the C-DRX inactivity period, it is recognized that the motion state of the terminal is changed from "motion state" to "static state", and the neighbor cell measurement may be performed using a preset measurement interval in the remaining idle time in the C-DRX inactivity period, that is, in the C-DRX, the measurement interval specified by the communication protocol is switched to the preset measurement interval.
By adopting the scheme of the embodiment of the invention, when the terminal is in a static state, the neighbor cell measurement is carried out by utilizing the preset measurement interval in the C-DRX inactive period, which is beneficial to selecting a more proper measurement interval, not only can the requirement of the mobility of the terminal be met, but also the power consumption of the terminal can be reduced.
Wherein the preset measurement interval may include one or more of: a preset measurement interval starting position, a preset measurement interval length, a preset measurement interval period and a preset measurement interval offset.
In fig. 3 and 4, I is used to indicate the period of the preset measurement interval, and L is used to indicate the measurement interval duration within the period I of a single preset measurement interval.
The determination method of each parameter related to the preset measurement interval may be performed with reference to the foregoing description, and is not described herein again.
Further, when the neighbor cell measurement task is completed in the C-DRX inactive period, determining the motion state in the latest statistical time period; and if the motion state in the latest statistical time period is still static, entering sleep for the rest duration of the C-DRX inactive period.
As shown in fig. 3, after the neighbor cell measurement task is finished, the terminal may enter sleep control without planning the neighbor cell measurement task.
As shown in fig. 4, after the neighbor cell measurement task is finished, the terminal may enter sleep control without planning the neighbor cell measurement task.
In the embodiment of the invention, when the adjacent cell measurement task is completed in the C-DRX inactive period, the motion state in the latest statistical time period is determined; if the motion state in the latest statistical time period is still static, the terminal enters sleep in the rest duration of the C-DRX inactive period.
In another specific implementation manner of the embodiment of the present invention, the step of determining a measurement interval for performing neighbor cell measurement in a current statistical time period may include: if the terminal is in a static state in a preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period and is in a dynamic state in the latest statistical time period in the C-DRX inactive period, adopting a predefined measurement interval to carry out neighbor cell measurement in the current statistical time period; wherein the predefined measurement interval comprises a communication protocol specified measurement interval.
Referring to fig. 5, fig. 5 is a schematic view of a working scenario of a fourth neighbor cell measurement method in the embodiment of the present invention.
As shown in fig. 5, in the C-DRX inactive period, it is recognized that the motion state of the terminal is changed from the "stationary state" to the "motion state", and if the neighboring cell measurement has been performed with the preset measurement interval, the neighboring cell measurement is performed with the measurement interval specified by the communication protocol, stopping using the preset measurement interval.
That is, in the C-DRX, a handover is performed from a preset measurement interval to a measurement interval specified using a communication protocol.
It should be noted that, as shown in fig. 2 to fig. 5, after the C-DRX inactivity period is finished, the task scheduling of the next C-DRX activity period is entered, and the neighbor cell measurement is performed by using the measurement interval specified by the communication protocol.
By adopting the scheme of the embodiment of the invention, when the terminal is changed into the operation state, the preset measurement interval is switched to the measurement interval specified by the communication protocol, so that the selection of the more proper measurement interval is facilitated, the requirement on the mobility of the terminal can be met, and the power consumption of the terminal can be reduced.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a neighbor cell measurement apparatus in an embodiment of the present invention. The neighbor cell measurement apparatus may include:
a motion state determining module 61, configured to determine, in a C-DRX inactive period, a motion state of the terminal itself by using a preset statistical time period if a neighbor measurement task in the C-DRX active period is not completed, where the motion state includes a motion state and a static state;
a measurement interval determining module 62, configured to determine, for each statistical time period in sequence from a first statistical time period in the C-DRX inactivity period, a measurement interval for performing neighbor measurement in a current statistical time period according to a motion state in a latest statistical time period and a preset number of statistical time periods before the latest statistical time period.
For the principle, specific implementation and beneficial effects of the neighbor cell measurement apparatus, please refer to the related description about the neighbor cell measurement method described above, and details are not repeated here.
Embodiments of the present invention also provide a storage medium having a computer program stored thereon, where the computer program is executed by a processor to perform the steps of the above method. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.
Specifically, in the embodiment of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM), SDRAM (SLDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).
The embodiment of the invention also provides a terminal, which comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the processor executes the steps of the method when running the computer program. The terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.
Specifically, a terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device (terminal device), a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (11)

1. A neighbor cell measurement method, comprising:
in a C-DRX inactive period, if a neighbor cell measurement task in the C-DRX active period is not finished, determining the motion state of a terminal by adopting a preset statistical time period, wherein the motion state comprises a motion state and a static state;
and determining the measurement interval for carrying out neighbor cell measurement in the current statistical time period according to the motion state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period for each statistical time period in sequence from the first statistical time period in the C-DRX inactive period.
2. The neighbor cell measurement method according to claim 1, wherein determining the measurement interval for neighbor cell measurement within the current statistical time period comprises:
if the terminal is in a running state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period, adopting a predefined measurement interval to carry out neighbor cell measurement in the current statistical time period;
wherein the predefined measurement interval comprises a communication protocol specified measurement interval.
3. The neighbor cell measurement method according to claim 1, wherein determining the measurement interval for neighbor cell measurement within the current statistical time period comprises:
if the terminal is in a static state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period, adopting a preset measurement interval to carry out neighbor cell measurement in the current statistical time period;
alternatively, the first and second electrodes may be,
if the terminal is in a dynamic state in a preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period and is in a static state in the latest statistical time period in the C-DRX inactive period, adopting a preset measurement interval to carry out neighbor cell measurement in the current statistical time period;
wherein the preset measurement interval comprises one or more of: a preset measurement interval starting position, a preset measurement interval length, a preset measurement interval period and a preset measurement interval offset.
4. The neighbor cell measurement method according to claim 3, further comprising:
when the neighbor cell measurement task is completed in the C-DRX inactive period, determining a motion state in the latest statistical time period;
and if the motion state in the latest statistical time period is still static, entering sleep for the rest duration of the C-DRX inactive period.
5. The neighbor cell measurement method according to claim 3, further comprising, before determining the measurement interval for neighbor cell measurement within the current statistical time period:
and determining the preset measurement interval offset as a standard offset value of a measurement interval specified by a communication protocol.
6. The neighbor cell measurement method according to claim 3, further comprising, before determining the measurement interval for neighbor cell measurement within the current statistical time period:
determining the preset measurement interval starting position, wherein the preset measurement interval starting position comprises one or more of the following items: the system frame number of the preset measurement interval starting position, the subframe number of the preset measurement interval starting position and the frame number of the preset measurement interval starting position;
wherein, the system frame number of the preset measurement interval starting position satisfies the following formula:
SFN mod (GAP period/RadioFrameLen) ═ FLOOR (gapOffset/RadioFrameLen);
determining the subframe number of the preset measurement interval starting position by adopting the following formula:
subframe＝gapOffset mod RadioFrameLen；
determining the frame number of the preset measurement interval starting position by adopting the following formula:
SSFN＝SFN*RadioFrameLen+subframe；
the SFN is used to indicate a system frame number of the preset measurement interval starting position, mod is used to indicate a remainder operator, FLOOR () is used to indicate rounding-down, gapOffset is used to indicate the preset measurement interval offset, the GAP period is used to indicate a preset measurement interval period, RadioFrame _ Len is used to indicate a length of a radio frame, subframe is used to indicate a subframe number of the preset measurement interval starting position, and SSFN is used to indicate a frame number of the preset measurement interval starting position.
7. The neighbor cell measurement method according to claim 1, wherein determining the measurement interval for neighbor cell measurement within the current statistical time period comprises:
if the terminal is in a static state in a preset number of statistical time periods before the latest statistical time period in the C-DRX inactive period and is in a dynamic state in the latest statistical time period in the C-DRX inactive period, adopting a predefined measurement interval to carry out neighbor cell measurement in the current statistical time period;
wherein the predefined measurement interval comprises a communication protocol specified measurement interval.
8. The neighbor measurement method according to claim 1, wherein each statistical time period is divided into a plurality of sliding windows;
the method for determining the motion state of the terminal by adopting the preset statistical time period comprises the following steps:
respectively determining the maximum value and the minimum value of the preset signal quality parameter of the currently resident serving cell in each sliding window of the preset statistical time period to be calculated;
determining a maximum value in the maximum values of the preset signal quality parameters of each sliding window, determining a minimum value in the minimum values of the preset signal quality parameters of each sliding window, and calculating the difference value between the maximum value and the minimum value;
if the difference is larger than or equal to a preset threshold, determining that the motion state of the terminal is a motion state;
and if the difference is smaller than a preset threshold, determining that the motion state of the terminal is a static state.
9. A neighbor cell measurement apparatus, comprising:
the motion state determining module is used for determining the motion state of the terminal by adopting a preset statistical time period if the neighbor cell measurement task in the C-DRX activation period is not completed in the C-DRX non-activation period, wherein the motion state comprises a motion state and a static state;
and the measurement interval determining module is used for determining the measurement interval for carrying out neighbor cell measurement in the current statistical time period according to the motion state in the latest statistical time period and the preset number of statistical time periods before the latest statistical time period for each statistical time period in sequence from the first statistical time period in the C-DRX inactive period.
10. A storage medium having a computer program stored thereon, wherein the computer program is configured to perform the steps of the neighbor cell measurement method according to any one of claims 1 to 8 when the computer program is executed by a processor.
11. A terminal comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the neighbor cell measurement method of any of claims 1 to 8.
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