CN109792624B - Signal quality measurement method and device and terminal - Google Patents
Signal quality measurement method and device and terminal Download PDFInfo
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- CN109792624B CN109792624B CN201880002594.6A CN201880002594A CN109792624B CN 109792624 B CN109792624 B CN 109792624B CN 201880002594 A CN201880002594 A CN 201880002594A CN 109792624 B CN109792624 B CN 109792624B
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- H—ELECTRICITY
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- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
- H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
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- 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
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- 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
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Abstract
The embodiment of the disclosure provides a signal quality measuring method, a device and a terminal, which relate to the field of communication, and the method comprises the following steps: a terminal receives signal intensity thresholds corresponding to n cells sent by access network equipment, wherein n is an integer greater than 2; the terminal measures the signal intensity of n cells in preset time; and when the signal intensity of the n cells respectively meets the signal intensity threshold corresponding to the n cells, the terminal is determined to be in a low mobility state. The method and the device for determining the mobility state of the terminal determine the mobility state of the terminal accurately by measuring the signal strength of the n cells in the preset time and determining that the terminal is in the low mobility state when the signal strength of the n cells respectively meets the threshold of the limited number strength corresponding to the n cells.
Description
Technical Field
The present disclosure relates to the field of communications, and in particular, to a method, an apparatus, and a device for measuring signal quality.
Background
When the terminal moves in the cell and the signal strength of the terminal connection is not enough to ensure the service quality, the terminal reselects a proper cell for connection according to the result of the mobility measurement, thereby ensuring that the service performed by the terminal is uninterrupted and the service quality is ensured.
In the related art, a terminal measures the signal strength of a cell where the terminal is currently located and the signal strengths of a plurality of neighboring cells, determines a target cell with the strongest signal strength by a ranking method, and uses the target cell as a cell for cell reselection or handover.
However, after the target cell becomes the camping cell of the terminal, the terminal needs to continue repeating the steps in the related art, and in the process of repeated measurement, there may be a chance that a certain cell is repeatedly measured but not sequenced to become the target cell, which causes a waste of terminal power.
Disclosure of Invention
The embodiment of the disclosure provides a method, a device and equipment for measuring signal quality, which can solve the problem that when a terminal repeatedly measures, a certain cell may be repeatedly measured but not become a target cell, and the redundant measurement causes the waste of terminal electric quantity, and specifically comprises the following steps:
according to an aspect of the embodiments of the present disclosure, there is provided a signal quality measurement method, the method including:
a terminal receives signal intensity thresholds corresponding to n cells sent by access network equipment, wherein n is an integer greater than 2;
the terminal measures the signal intensity of the n cells within a preset time;
and when the signal intensity of the n cells respectively meets the signal intensity thresholds corresponding to the n cells, the terminal determines that the terminal is in a low mobility state.
In an optional embodiment, the signal strength threshold corresponding to each cell includes: a first signal strength threshold;
and when the signal strengths of the n cells are respectively greater than the first signal strength threshold corresponding to the n cells, the terminal determines that the terminal is in the low mobility state.
In another optional embodiment, the signal strength threshold corresponding to each cell includes: a first signal strength threshold and a second signal strength threshold, the first signal strength threshold being less than the second signal strength threshold;
and when the signal strengths of the n cells of the terminal are respectively greater than the first signal strength thresholds corresponding to the n cells and the signal strengths of the n cells are respectively less than the second signal strength thresholds corresponding to the n cells, determining that the terminal is in the low mobility state.
Optionally, the terminal receives a signal strength configuration list sent by the access network device, where the signal strength configuration list includes signal strength thresholds corresponding to the n cells.
In another optional implementation manner, the terminal receives a cell reselection time threshold sent by the access network device;
and when the signal strength of the n cells of the terminal respectively meets the signal strength threshold corresponding to the n cells and the cell reselection frequency is less than the cell reselection frequency threshold, determining that the terminal is in the low mobility state.
Optionally, the terminal receives a System Information Block (SIB) X sent by the access network device, where the SIB X includes the threshold of the cell reselection time, and X is a positive integer.
In another optional implementation manner, the terminal receives a cell switching number threshold sent by the access network device;
and when the signal intensity of the n cells of the terminal respectively meets the signal intensity threshold corresponding to the n cells and the cell switching times are less than the cell switching time threshold, determining that the terminal is in the low mobility state.
Optionally, the terminal receives a Radio Resource Control (RRC) message sent by the access network device, where the RRC message includes the threshold of the cell switching times.
Optionally, the n cells are macro cells; or the n cells comprise k macro cells and n-k micro cells, and k is a positive integer not greater than n.
In another optional implementation manner, when a serving cell exists at a current location, the terminal receives a signal strength threshold corresponding to the serving cell sent by the access network device;
the terminal measures the signal intensity of the serving cell within a preset time;
and when the signal intensity of the serving cell meets the signal intensity threshold corresponding to the serving cell, the terminal determines that the terminal is in the low mobility state.
According to another aspect of the embodiments of the present disclosure, there is provided a signal quality measurement apparatus, the apparatus including:
a receiving module configured to receive a signal strength threshold corresponding to n cells sent by an access network device, where n is an integer greater than 2;
a measurement module configured to measure signal strengths of the n cells for a predetermined time;
a determining module configured to determine that the terminal is in a low mobility state when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells.
In an alternative embodiment, the signal strength threshold corresponding to each cell comprises: a first signal strength threshold;
the determining module is configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells are respectively greater than the first signal strength thresholds corresponding to the n cells.
In another optional embodiment, the signal strength threshold corresponding to each cell includes: a first signal strength threshold and a second signal strength threshold, the first signal strength threshold being less than the second signal strength threshold;
the determining module is configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells are respectively greater than the first signal strength thresholds corresponding to the n cells, and the signal strengths of the n cells are respectively less than the second signal strength thresholds corresponding to the n cells.
Optionally, the receiving module is configured to receive a signal strength configuration list sent by the access network device, where the signal strength configuration list includes signal strength thresholds corresponding to the n cells.
In another optional embodiment, the receiving module is configured to receive a threshold of cell reselection times sent by the access network device;
the determining module is configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells, and the cell reselection times are smaller than the cell reselection time threshold.
Optionally, the receiving module is configured to receive an SIB X sent by the access network device, where the SIB X includes the threshold of the cell reselection time, and X is a positive integer.
In another optional embodiment, the receiving module is configured to receive a threshold of cell switching times sent by the access network device;
the determining module is configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells, and the cell switching times are less than the cell switching time threshold.
Optionally, the receiving module is configured to receive an RRC message sent by the access network device, where the RRC message includes the threshold of cell switching times.
Optionally, the n cells are macro cells; or the n cells comprise k macro cells and n-k micro cells, and k is a positive integer not greater than n.
In another optional embodiment, the receiving module is configured to receive, when there exists one serving cell in the current location, a signal strength threshold corresponding to the serving cell sent by the access network device;
the measurement module configured to measure a signal strength of the serving cell for a predetermined time;
the determining module is configured to determine that the terminal is in the low mobility state when the signal strength of the serving cell satisfies the signal strength threshold corresponding to the serving cell.
According to another aspect of the embodiments of the present disclosure, there is provided a terminal, including: a processor; a transceiver coupled to the processor; a memory for storing processor-executable instructions; wherein the processor is configured to implement the signal quality measurement method as described above.
According to another aspect of the embodiments of the present disclosure, there is provided a chip including a programmable logic circuit and/or program instructions, which when run, implements the signal quality measurement method as described above.
According to another aspect of embodiments of the present disclosure, there is provided a computer storage medium comprising programmable logic circuits and/or program instructions which, when executed, implement a signal quality measurement method as described above.
According to another aspect of embodiments of the present disclosure, there is provided a computer program product comprising programmable logic circuits and/or program instructions which, when run, implement the signal quality measurement method as described above.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:
the method and the device determine that the terminal is in a low mobility state by measuring the signal strength of n cells within the preset time and determining that the terminal is in the low mobility state when the signal strength of the n cells respectively meets the signal strength threshold corresponding to the n cells, thereby achieving the purpose of determining the mobility state of the terminal more accurately by measuring the signal strength of the n cells.
Drawings
Fig. 1 is a schematic diagram of a networking architecture of a communication system provided by an exemplary embodiment of the present disclosure;
fig. 2 is a schematic diagram of an implementation environment when a terminal is in a low mobility state according to an exemplary embodiment of the present disclosure;
fig. 3 is a flowchart of a signal quality measurement method provided by an exemplary embodiment of the present disclosure;
fig. 4 is a flowchart of a signal quality measurement method provided by another exemplary embodiment of the present disclosure;
fig. 5 is a flowchart of a signal quality measurement method provided by another exemplary embodiment of the present disclosure;
fig. 6 is a flowchart of a signal quality measurement method provided by another exemplary embodiment of the present disclosure;
fig. 7 is a flowchart of a signal quality measurement method provided by another exemplary embodiment of the present disclosure;
fig. 8 is a flowchart of a signal quality measurement method provided by another exemplary embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a signal quality measuring apparatus provided in an exemplary embodiment of the present disclosure;
fig. 10 is a block diagram of a communication device provided in an exemplary embodiment of the present disclosure;
fig. 11 is a block diagram of a communication system provided in an exemplary embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The 3GPP has conducted studies on power saving of terminals in the second release of 5G, which includes several aspects: the detection optimization of the control channel in the connection state, the control of the discontinuous receiving process of the optimized terminal, the reduction of the measurement requirement in the aspect of wireless resource management and the like.
The measurement frequency and the measurement period in the measurement requirement in the aspect of radio resource management are all specific to all terminals, that is, mobility is not distinguished. In order to achieve the purpose of saving power by reducing the measurement requirement in the aspect of radio resource management, two mobility states of the terminal are divided: a normal mobility state and a low mobility state, and correspondingly, the measurement requirements in terms of radio resource management include a measurement configuration for normal mobility and a measurement configuration for low mobility. The measurement configuration of low mobility has a reduced measurement requirement compared to the measurement configuration of normal mobility, so that the power consumption of the terminal in the low mobility state is reduced.
As shown in fig. 1, a network deployment structure in a communication system generally uses a macro cell 101 (a cell provided by a macro base station) as a framework, and a micro cell 102 (a cell provided by a micro base station/a pico base station) as a supplementary and hot spot coverage framework. The macro cell 101 is characterized by a large coverage area and the micro cell 102 is characterized by a small coverage area. As the terminal moves around according to arrow 103, cell reselection or handover may occur depending on the change in signal strength. However, if the terminal remains still or the moving range is small, if the terminal does not distinguish the mobility, the terminal always uses the measurement configuration of the normal mobility to perform the measurement, and many unnecessary measurements are consumed, so that the power of the terminal is consumed. Therefore, in this case, a measurement configuration of low mobility corresponding to the low mobility state of the terminal is defined, and unnecessary measurement consumption can be reduced, thereby achieving the purpose of power saving.
The embodiment of the disclosure provides a method, a device and equipment for measuring signal quality, and a terminal determines whether the terminal is in a low mobility state or not according to the measured signal strength of n cells. And when the terminal determines that the terminal is in the low mobility state, the terminal performs low mobility measurement, so that the power consumption of the terminal in the measurement process of the cell signal quality is reduced.
Fig. 2 is a schematic diagram illustrating an implementation environment of a terminal in a low mobility state according to an exemplary embodiment of the present disclosure, where fig. 2 illustrates an example where the terminal performs mobility measurement in a range covered by 3 cells, and fig. 2 includes: a terminal 201, a first cell 202, a second cell 203 and a third cell 204.
The terminal 201 is within 3 cell coverage. The terminal 201 moves back and forth according to the direction indicated by the arrow. The terminal 201 is configured to measure the change of the signal strength of 3 cells in the range where the terminal 201 moves back and forth within a predetermined time. The terminal 201 is configured to perform measurement using a measurement configuration of low mobility when it is determined that the terminal 201 itself is in a low mobility state.
Assuming that the first cell 202 is a cell where the terminal resides, the access network device of the first cell 202 is configured to send, to the terminal, signal strength thresholds corresponding to 3 cells, respectively.
Assuming that the second cell 203 is a cell where the terminal resides, the access network device of the second cell 203 is configured to send, to the terminal, signal strength thresholds corresponding to 3 cells, respectively.
Assuming that the third cell 204 is a cell where the terminal resides, the access network device of the third cell 204 is configured to send, to the terminal, signal strength thresholds corresponding to 3 cells, respectively.
The above embodiments are merely illustrative, the number of cells on the terminal periphery side may be three or more, and the present embodiment does not limit the number of cells on the terminal periphery side.
In some embodiments of the present disclosure, a terminal determines that the terminal is in a low mobility state when signal strengths of n cells respectively satisfy signal strength thresholds corresponding to the n cells according to the signal strength thresholds corresponding to the n cells sent by an access network device.
Fig. 3 is a flowchart illustrating a signal quality measurement method according to an exemplary embodiment of the present disclosure, which may be applied to the implementation environment illustrated in fig. 1, where the access network device is a base station.
The method comprises the following steps:
step 301, the base station sends a signal strength threshold corresponding to n cells to the terminal, where n is an integer greater than 2.
And the signal strength threshold is used for triggering the terminal to be in a low mobility state when the signal strengths of the n cells respectively meet the signal strength thresholds corresponding to the n cells.
The low mobility state is also referred to as a small-range moving state, and the low mobility state refers to a state in which the terminal does not move or moves within a limited range. Or, the low mobility state refers to a state in which the terminal does not move for a predetermined time or moves within a limited range.
And the base station configures a signal intensity threshold of each cell in the n cells according to the signal intensity of the n cells, wherein n is an integer greater than 2. Optionally, the n cells include a cell where the terminal is located and n-1 neighboring cells; or, the n cells include n neighboring cells except the cell where the terminal is located. Where n is a smaller number, such as n-3.
The signal strength threshold is used for comparing with the signal strength of the cell measured by the terminal and judging the mobility state of the terminal. Optionally, the signal strength threshold of each cell is the same, or the signal strength threshold of each cell is different, or the signal strength thresholds of some cells where the signal strength threshold of each cell exists are the same, and other cells are different.
In an optional embodiment, the signal strength threshold corresponding to each cell includes: a first signal strength threshold.
In another optional embodiment, the signal strength threshold corresponding to each cell includes: a first signal strength threshold and a second signal strength threshold, the first signal strength threshold being less than the second signal strength threshold.
Optionally, the base station sends a signal strength configuration list to the terminal, where the signal strength configuration list includes signal strength thresholds corresponding to n cells.
Step 302, the terminal receives the signal strength threshold corresponding to n cells sent by the base station.
The terminal receives the signal strength threshold of each cell in the n cells sent by the base station.
Optionally, the terminal receives a signal strength configuration list sent by the base station, where the signal strength configuration list includes signal strength thresholds corresponding to n cells.
Step 303, the terminal measures the signal strength of n cells within a predetermined time.
The terminal measures the signal strength of n cells within a predetermined time, and obtains the signal strength of each of the n cells within the predetermined time.
And step 304, when the signal strengths of the n cells respectively meet the signal strength thresholds corresponding to the n cells, the terminal determines that the terminal is in a low mobility state.
The terminal compares the measured signal intensity of each cell in the n cells with the signal intensity threshold corresponding to each cell respectively, judges that the signal intensity of each cell in the n cells meets the signal intensity threshold corresponding to each cell respectively, and determines that the terminal is in a low mobility state.
In an optional implementation manner, when the signal strengths of the n cells are respectively greater than the first signal strength thresholds corresponding to the n cells, the terminal determines that the terminal itself is in the low-mobility state within a predetermined time.
In another optional implementation manner, when the signal strengths of the n cells are respectively greater than first signal strength thresholds corresponding to the n cells, and the signal strength thresholds of the n cells are respectively less than second signal strength thresholds corresponding to the n cells, the terminal determines that the terminal itself is in the low-mobility state within a predetermined time.
Optionally, after determining that the terminal is in the low mobility state, the terminal switches the measurement configuration that the terminal takes effect from the first measurement configuration corresponding to the normal mobility to the second measurement configuration corresponding to the low mobility. Compared with the second measurement configuration with normal mobility, the second measurement configuration with low mobility has the advantages that the number of the measured frequency points is reduced, and/or the measurement period is prolonged, so that the electric quantity consumption generated in the measurement process of the signal quality of the relevant cell is reduced when the terminal is in the low mobility state, and the purpose of saving electricity is achieved.
To sum up, the method provided by the embodiment of the present disclosure determines that the terminal is in the low mobility state by measuring the signal strengths of n cells within a predetermined time and determining that the terminal is in the low mobility state when the signal strengths of the n cells respectively satisfy the threshold of the number limit strength corresponding to the n cells, so as to achieve the purpose of determining the mobility state of the terminal more accurately by measuring the signal strengths of the n cells.
The above-described steps performed by the terminal may be implemented separately as a signal quality measuring method at the terminal side; the steps executed by the base station can be separately implemented to become a signal quality measurement method on the access network equipment side.
Fig. 4 is a flowchart illustrating a signal quality measurement method according to another exemplary embodiment of the present disclosure, which may be applied to the implementation environment illustrated in fig. 1, where the access network device is a base station.
The method comprises the following steps:
step 401, the base station sends a signal strength threshold corresponding to n cells to the terminal, where n is an integer greater than 2.
And the signal strength threshold is used for triggering the terminal to be in a low mobility state when the signal strengths of the n cells respectively meet the signal strength thresholds corresponding to the n cells.
The low mobility state is also referred to as a small-range moving state, and the low mobility state refers to a state in which the terminal does not move within a range covered by n cells or moves within a limited range covered by n cells. Or, the low mobility state refers to a state in which the terminal does not move for a predetermined time or moves within a limited range.
And the base station configures a signal intensity threshold of each cell in the n cells according to the signal intensity of the n cells, wherein n is an integer greater than 2. Optionally, the n cells include a cell where the terminal is located and n-1 neighboring cells; or, the n cells include n neighboring cells except the cell where the terminal is located. Where n is a smaller number, such as n-3.
Optionally, the n cells are all macro cells, or the n cells include k macro cells and n-k micro cells.
The signal strength threshold is used for comparing with the cell signal strength (or cell signal quality) measured by the terminal, and judging the mobility state of the terminal. Optionally, the signal strength threshold of each cell is the same, or the signal strength threshold of each cell is different, or the signal strength thresholds of some cells where the signal strength threshold of each cell exists are the same, and other cells are different.
The signal strength threshold corresponding to each cell comprises a first signal strength threshold.
Optionally, the base station sends a signal strength configuration list to the terminal, where the signal strength configuration list includes first signal strength thresholds corresponding to n cells.
Step 402, the terminal receives the signal strength threshold corresponding to n cells sent by the base station.
The terminal receives a first signal strength threshold corresponding to each cell in n cells sent by the base station.
Optionally, the terminal receives a signal strength configuration list sent by the base station.
In step 403, the terminal measures the signal strength of n cells within a predetermined time.
The terminal measures the signal intensity of n cells in a preset time, and obtains the signal intensity of each cell in the n cells in the preset time.
In step 404, the terminal determines that the terminal is in a low mobility state when the signal strengths of the n cells are respectively greater than the first signal strength thresholds corresponding to the n cells.
The terminal compares the measured signal intensity of each cell in the n cells with the first signal intensity threshold corresponding to each cell respectively, judges that the signal intensity of each cell in the n cells is respectively greater than the first signal intensity threshold corresponding to each cell, and determines that the terminal is in a low mobility state.
Optionally, after determining that the terminal is in the low mobility state, the terminal switches the measurement configuration that the terminal takes effect from the first measurement configuration corresponding to the normal mobility to the second measurement configuration corresponding to the low mobility. Compared with the second measurement configuration with normal mobility, the first measurement configuration with low mobility reduces the number of frequency points required to be measured and/or prolongs the measurement period, thereby reducing the power consumption generated in the measurement process of the signal quality of the relevant cell when the terminal is in the low mobility state and achieving the purpose of saving power.
To sum up, the method provided by the embodiment of the present disclosure determines that the terminal is in the low mobility state by measuring the signal strengths of n cells within a predetermined time and determining that the terminal is in the low mobility state when the signal strengths of the n cells respectively satisfy the threshold of the number limit strength corresponding to the n cells, so as to achieve the purpose of determining the mobility state of the terminal more accurately by measuring the signal strengths of the n cells.
In the method provided by the embodiment of the present disclosure, when it is determined that the measured signal strengths of n cells are respectively greater than the first signal strength thresholds corresponding to the n cells, it is determined that the terminal is in a low mobility state.
The above-described steps performed by the terminal may be implemented separately as a signal quality measuring method at the terminal side; the steps executed by the base station can be separately implemented to become a signal quality measurement method on the access network equipment side.
In an alternative embodiment based on fig. 4, as shown in fig. 5, the signal strength threshold corresponding to each cell includes a first signal strength threshold and a second signal strength threshold, and when the signal strength of each cell is within a range shown by the first signal strength threshold and the second signal strength threshold, the terminal determines that the terminal is in the low mobility state. The above step 404 may alternatively be implemented as step 4041, and the alternative steps are as follows:
step 4041, when the signal strengths of the n cells are respectively greater than the first signal strength thresholds corresponding to the n cells, and the signal strengths of the n cells are respectively less than the second signal strength thresholds corresponding to the n cells, it is determined that the terminal is in the low mobility state.
The low mobility state is also referred to as a small-range moving state, and the low mobility state refers to a state in which the terminal does not move within a range covered by n cells or moves within a limited range covered by n cells.
The signal strength threshold corresponding to each cell comprises a first signal strength threshold and a second signal strength threshold, and the first signal strength threshold is smaller than the second signal strength threshold.
Optionally, the terminal receives a signal strength configuration list sent by the base station, where the signal strength configuration list includes a first signal strength threshold and a second signal strength threshold corresponding to n cells.
The terminal compares the measured signal intensity of each cell in the n cells with a first signal intensity threshold and a second signal intensity threshold corresponding to each cell respectively, judges that the signal intensity of each cell in the n cells is respectively greater than the first signal intensity threshold corresponding to each cell, and the signal intensity of each cell in the n cells is respectively less than the second signal intensity threshold corresponding to each cell, and determines that the terminal is in a low mobility state.
Optionally, after determining that the terminal is in the low mobility state, the terminal switches the measurement configuration that the terminal takes effect from the first measurement configuration corresponding to the normal mobility to the second measurement configuration corresponding to the low mobility. Compared with the second measurement configuration with normal mobility, the first measurement configuration with low mobility reduces the number of frequency points required to be measured and/or prolongs the measurement period, thereby reducing the power consumption generated in the measurement process of the signal quality of the relevant cell when the terminal is in the low mobility state and achieving the purpose of saving power.
According to the method provided by the embodiment of the disclosure, the terminal is more accurately determined to be in the low mobility state by judging that the measured signal strengths of the n cells are respectively greater than the first signal strength thresholds corresponding to the n cells, and the signal strengths of the n cells are respectively less than the second signal strength thresholds corresponding to the n cells.
The above-described steps performed by the terminal can be separately implemented as a signal quality measuring method at the terminal side.
In an alternative embodiment based on fig. 4 or fig. 5, the determination of the mobility state of the terminal is assisted by counting the number of times of cell reselections within a predetermined time by the terminal on the basis of the determination of the mobility state of the terminal by the signal strength threshold.
Fig. 6 is a flowchart illustrating a signal quality measurement method according to another exemplary embodiment of the present disclosure, which may be applied to the implementation environment illustrated in fig. 1, where the access network device is a base station.
The method comprises the following steps:
steps 601 to 602 are the same as steps 301 to 302, and are not described again here.
Step 603, the base station sends the cell reselection time threshold to the terminal.
And the cell reselection time threshold is used for triggering the terminal to be in a low mobility state when the cell reselection times of the n cells meet the cell reselection time threshold corresponding to the n cells.
The low mobility state is also referred to as a small-range moving state, and the low mobility state refers to a state in which the terminal does not move within a range covered by n cells or moves within a limited range covered by n cells.
Optionally, the base station sends (or broadcasts) SIB X to the terminal, where the SIB X includes a threshold of cell reselection times, and X is a positive integer. And the cell reselection time threshold is used for comparing with the cell reselection time measured by the terminal and judging the mobility state of the terminal.
In an illustrative example, the threshold number of cell reselections is in any of the SIB 3 through SIB 22 messages.
In step 604, the terminal receives a cell reselection time threshold sent by the base station.
Optionally, the terminal receives the SIB X sent by the base station.
Step 605, the terminal measures the signal strength of n cells within a predetermined time.
The terminal measures the signal intensity of n cells in a preset time, and obtains the signal intensity of each cell in the n cells in the preset time. And the terminal counts the cell reselection times of the terminal in the n cells within the preset time to obtain the cell reselection times of the terminal within the preset time.
Step 606, when the signal strength of the n cells respectively meets the signal strength threshold corresponding to the n cells and the cell reselection frequency is smaller than the cell reselection frequency threshold, the terminal is determined to be in the low mobility state.
The terminal compares the measured signal intensity of each cell in the n cells with the signal intensity threshold corresponding to each cell respectively, and judges that the signal intensity of each cell in the n cells meets the signal intensity threshold corresponding to each cell respectively, the cell reselection frequency of the terminal in a preset time is smaller than the cell reselection frequency threshold, and the terminal determines that the terminal is in a low mobility state.
Optionally, after determining that the terminal is in the low mobility state, the terminal switches the measurement configuration that the terminal takes effect from the first measurement configuration corresponding to the normal mobility to the second measurement configuration corresponding to the low mobility. Compared with the second measurement configuration with normal mobility, the first measurement configuration with low mobility reduces the number of frequency points required to be measured and/or prolongs the measurement period, thereby reducing the power consumption generated in the measurement process of the signal quality of the relevant cell when the terminal is in the low mobility state and achieving the purpose of saving power.
In the method provided by the embodiment of the present disclosure, it is determined that the measured signal strengths of n cells respectively satisfy the signal strength thresholds corresponding to the n cells, and when the cell reselection time is less than the cell reselection time threshold, the terminal is in the low mobility state.
The above-described steps performed by the terminal may be implemented separately as a signal quality measuring method at the terminal side; the steps executed by the base station can be separately implemented to become a signal quality measurement method on the access network equipment side.
It should be noted that step 601 and step 603 may occur simultaneously, or may occur sequentially from front to back, that is, the base station may send the signal strength threshold and the cell reselection frequency corresponding to n cells to the terminal simultaneously, or the base station may separately send the signal strength threshold and the cell reselection frequency corresponding to n cells, and the configuration order of the two parameters is not limited. Therefore, the terminal may simultaneously receive the signal strength threshold and the cell reselection time threshold corresponding to n cells sent by the base station, or the terminal may separately receive the signal strength threshold and the cell reselection time threshold corresponding to n cells sent by the base station according to the sending sequence, which is not specifically limited in this embodiment.
In an alternative embodiment based on fig. 6, as shown in fig. 7, on the basis of determining the mobility state of the terminal through the signal strength threshold, the determination of the mobility state of the terminal is assisted by counting the number of times that the terminal switches in a predetermined time. The steps 603 to 606 can be alternatively realized as steps 6031 to 6061, and the alternative steps are as follows:
step 6031, the base station sends the cell switch times threshold to the terminal.
And the cell switching frequency threshold is used for triggering the terminal to be in a low mobility state when the cell switching frequency of the n cells meets the cell switching frequency threshold corresponding to the n cells.
The low mobility state is also referred to as a small-range moving state, and the low mobility state refers to a state in which the terminal does not move within a range covered by n cells or moves within a limited range covered by n cells.
Optionally, the base station sends an RRC message to the terminal, where the RRC message includes a threshold of cell switching times. The cell switching frequency threshold is used for comparing with the cell switching frequency measured by the terminal and judging the mobility state of the terminal.
Step 6041, the terminal receives the threshold of the cell switching times sent by the base station.
Optionally, the terminal receives an RRC message sent by the base station.
In step 6051, the terminal measures the signal strength of n cells within a predetermined time.
The terminal measures the signal intensity of n cells in a preset time, and obtains the signal intensity of each cell in the n cells in the preset time. And the terminal counts the cell switching times of the terminal in the n cells within the preset time to obtain the cell switching times of the terminal within the preset time.
Step 6061, when the signal strength of n cells respectively meets the signal strength threshold corresponding to the n cells and the cell switching frequency is less than the cell switching frequency threshold, the terminal is determined to be in a low mobility state.
The terminal compares the measured signal intensity of each cell in the n cells with the signal intensity threshold corresponding to each cell respectively, judges that the signal intensity of each cell in the n cells meets the signal intensity threshold corresponding to each cell respectively, and determines that the cell switching frequency within the preset time of the terminal is less than the cell switching frequency threshold, and the terminal is in a low mobility state.
Optionally, after determining that the terminal is in the low mobility state, the terminal switches the measurement configuration of the mobility of the terminal from the measurement configuration of the normal mobility to the measurement configuration of the low mobility. Compared with the measurement configuration of normal mobility, the measurement configuration of low mobility has the advantages that the number of the measured frequency points is reduced, and/or the measurement period is prolonged, so that the electric quantity consumption is reduced when the terminal is in a mobility state, and the purpose of saving electricity is achieved.
In the method provided by the embodiment of the present disclosure, it is determined that the measured signal strengths of n cells respectively satisfy the signal strength thresholds corresponding to the n cells, and when the cell switching frequency is less than the cell switching frequency threshold, the terminal is in the low mobility state.
The above-described steps performed by the terminal may be implemented separately as a signal quality measuring method at the terminal side; the steps executed by the base station can be separately implemented to become a signal quality measurement method on the access network equipment side.
It should be noted that step 601 and step 6031 may occur simultaneously, or may occur sequentially from front to back, that is, the base station may send the signal strength threshold and the cell switching times corresponding to n cells to the terminal simultaneously, or the base station may separately send the signal strength threshold and the cell switching times corresponding to n cells, and the two sending orders are not limited. Therefore, the terminal may receive the signal strength threshold and the cell switching frequency threshold corresponding to n cells sent by the base station at the same time, or the terminal may separately receive the signal strength threshold and the cell switching frequency threshold corresponding to n cells sent by the base station according to the sending sequence, which is not specifically limited in this embodiment.
Illustratively, when the terminal is located in a suburban area, a wilderness, or the like, the terminal may have a situation (no other cell coverage) where the terminal can measure a signal of one cell, that is, a special case where n is 1. At this time, the terminal determines the mobility state of the terminal by measuring the signal strength of the serving cell within a predetermined time and comparing the measured signal strength with the signal strength threshold of the serving cell.
Fig. 8 shows a flowchart of a signal quality measurement method according to another exemplary embodiment of the present disclosure, where the access network device is a base station. The method comprises the following steps:
step 801, when a serving cell exists at a location of a terminal, a base station sends a signal strength threshold corresponding to the serving cell to the terminal.
And the base station determines that a serving cell exists at the position of the terminal according to the measurement report sent by the terminal. The measurement report sent by the terminal includes the result of the terminal measuring the signal strength of the cell.
And the base station configures a signal intensity threshold of the serving cell according to the signal intensity of the serving cell. The signal strength threshold is used for comparing with the signal strength of the cell measured by the terminal and judging the mobility state of the terminal.
In an alternative embodiment, the signal strength threshold of the serving cell comprises a first signal strength threshold.
In another alternative embodiment, the signal strength threshold of the serving cell includes a first signal strength threshold and a second signal strength threshold, and the first signal strength threshold is smaller than the second signal strength threshold.
Optionally, the base station sends a signal strength configuration list to the terminal, where the signal strength configuration list includes a signal strength threshold of the serving cell.
Step 802, when a serving cell exists in the current location of the terminal, receiving a signal strength threshold corresponding to the serving cell sent by the base station.
When the terminal measures the signal strength of a cell during mobility measurement, the terminal determines that the terminal has a serving cell at the current location, where the serving cell is a cell with a large coverage area of a base station of the cell, for example, the serving cell may be a region with a large coverage area of a base station constructed in a suburb, a farm, a mountain area, or the like.
And the terminal receives the signal strength threshold of the serving cell sent by the base station.
Optionally, the terminal receives a signal strength configuration list sent by the base station.
In step 803, the terminal measures the signal strength of the serving cell within a predetermined time.
The terminal measures the signal intensity of the serving cell in a predetermined time to obtain the signal intensity of the serving cell in the predetermined time.
Step 804, when the signal strength of the serving cell meets the signal strength threshold corresponding to the serving cell, the terminal determines that the terminal is in a low mobility state.
The low mobility state is also referred to as a small-range moving state, and the low mobility state refers to a state in which the terminal does not move within a range covered by the serving cell or moves within a limited range within the range covered by the serving cell.
The terminal compares the measured signal intensity of the serving cell with a signal intensity threshold corresponding to the serving cell, judges that the signal intensity of the serving cell meets the signal intensity threshold corresponding to the serving cell, and determines that the terminal is in a low mobility state.
In an alternative embodiment, when the signal strength of the serving cell is greater than a first signal strength threshold corresponding to the serving cell, the terminal determines that the terminal itself is in the low mobility state within a predetermined time.
In another optional implementation manner, when the signal strength of the serving cell is greater than a first signal strength threshold corresponding to the serving cell and the signal strength threshold of the serving cell is less than a second signal strength threshold corresponding to the serving cell, the terminal determines that the terminal itself is in the low mobility state within a predetermined time.
Optionally, after determining that the terminal is in the low mobility state, the terminal switches the measurement configuration of the mobility of the terminal from the measurement configuration of the normal mobility to the measurement configuration of the low mobility. Compared with the measurement configuration of normal mobility, the measurement configuration of low mobility has the advantages that the number of the measured frequency points is reduced, and/or the measurement period is prolonged, so that the electric quantity consumption is reduced when the terminal is in a mobility state, and the purpose of saving electricity is achieved.
The method provided by the embodiment of the present disclosure determines that the terminal is in a low mobility state by determining that the measured signal strength of the serving cell satisfies a signal strength threshold corresponding to the serving cell.
The above-described steps performed by the terminal may be implemented separately as a signal quality measuring method at the terminal side; the steps executed by the base station can be separately implemented to become a signal quality measurement method on the access network equipment side.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure.
Fig. 9 shows a schematic structural diagram of a signal quality measurement apparatus provided in an exemplary embodiment of the present disclosure, which may be implemented by software, hardware, or a combination of the two as all or part of a terminal, and includes:
a receiving module 910, configured to receive a signal strength threshold corresponding to n cells sent by an access network device, where n is an integer greater than 2.
A measuring module 920 configured to measure signal strengths of the n cells within a predetermined time.
A determining module 930 configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells.
In an optional embodiment, the signal strength threshold corresponding to each cell includes: a first signal strength threshold.
A determining module 930 configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells are respectively greater than the first signal strength thresholds corresponding to the n cells.
In another optional embodiment, the signal strength threshold corresponding to each cell includes: a first signal strength threshold and a second signal strength threshold, the first signal strength threshold being less than the second signal strength threshold.
The determining module 930 is configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells are respectively greater than first signal strength thresholds corresponding to the n cells, and the signal strengths of the n cells are respectively less than second signal strength thresholds corresponding to the n cells.
Optionally, the receiving module 910 is configured to receive a signal strength configuration list sent by the access network device, where the signal strength configuration list includes signal strength thresholds corresponding to n cells.
In another optional embodiment, the receiving module 910 is configured to receive a threshold of cell reselection times sent by the access network device.
The determining module 930 is configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells, and the cell reselection times are less than the cell reselection time threshold.
Optionally, the receiving module 910 is configured to receive an SIB X sent by the access network device, where the SIB X includes a cell reselection time threshold.
In another optional embodiment, the receiving module 910 is configured to receive a threshold of cell switching times sent by an access network device.
The determining module 930 is configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells, and the cell switching times are less than the cell switching time threshold.
Optionally, the receiving module 910 is configured to receive an RRC message sent by the access network device, where the RRC message includes a threshold of cell switching times.
Optionally, the n cells are macro cells; or the n cells comprise k macro cells and n-k micro cells, and k is a positive integer not greater than n.
In another optional embodiment, the receiving module 910 is configured to receive, when there exists one serving cell in the current location, a signal strength threshold corresponding to the serving cell sent by the access network device.
A measuring module 920 configured to measure the signal strength of the serving cell for a predetermined time.
A determining module 930 configured to determine that the terminal is in the low mobility state when the signal strength of the serving cell satisfies the signal strength threshold corresponding to the serving cell.
It should be noted that: in the signal quality measurement apparatus provided in the foregoing embodiment, when performing signal quality measurement, the division of each functional module is exemplified, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the signal quality measurement apparatus and the method embodiment of the signal quality measurement method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiment and are not described herein again.
It should be noted that the sending module in the foregoing embodiment may be implemented by a communication chip, or may be implemented by cooperation of the communication chip and a processor; and/or, the receiving module in the above embodiments may be implemented by a communication chip, or may be implemented by cooperation of the communication chip and a processor.
Fig. 10 shows a block diagram of a communication device 1100 provided by an exemplary embodiment of the present disclosure. For example, the communication device 1100 may be a first terminal or an access network device. As shown in fig. 10, the communication device 1100 may include: a processor 1101, a receiver 1102, a transmitter 1103, and a memory 1104. The receiver 1102, the transmitter 1103, and the memory 1104 are each coupled to the processor 1101 by a bus.
The processor 1101 includes one or more processing cores, and the processor 1101 executes software programs and modules to execute the method executed by the terminal or the access network device in the uplink data transmission method provided by the embodiment of the present disclosure. The memory 1104 may be used to store software programs and modules. In particular, memory 1104 may store an operating system 11041, and application program modules 11042 required for at least one function. The receiver 1102 is configured to receive communication data transmitted by other devices, and the transmitter 1103 is configured to transmit communication data to other devices.
Fig. 11 shows a block diagram of a communication system 1200 according to an exemplary embodiment of the present disclosure, and as shown in fig. 11, the communication system 1200 includes: access network device 1201 and terminal 1202.
The access network device 1201 and the terminal 1202 are configured to perform the signal quality measurement method performed in any one of the embodiments shown in fig. 3 to 8.
In an exemplary embodiment, a computer readable storage medium is also provided, which is a non-volatile computer readable storage medium, and a computer program is stored in the computer readable storage medium, and when being executed by a processing component, the stored computer program can implement the signal quality measurement method provided by the above-mentioned embodiment of the present disclosure.
The disclosed embodiments also provide a computer program product having instructions stored therein, which when run on a computer, enable the computer to perform the signal quality measurement method provided by the disclosed embodiments.
The disclosed embodiment also provides a chip, which comprises a programmable logic circuit and/or a program instruction, and when the chip runs, the signal quality measurement method provided by the disclosed embodiment can be executed.
It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is of the preferred embodiment of the present disclosure and is not intended to limit the present disclosure, but rather, the appended claims are intended to cover all such modifications, equivalents, and improvements as fall within the true spirit and scope of the disclosure.
Claims (17)
1. A method of signal quality measurement, the method comprising:
a terminal receives signal intensity thresholds corresponding to n cells sent by access network equipment, wherein n is an integer greater than 2;
the terminal measures the signal intensity of the n cells within a preset time;
and when the signal strengths of the n cells of the terminal are respectively greater than first signal strength thresholds corresponding to the n cells and the signal strengths of the n cells are respectively less than second signal strength thresholds corresponding to the n cells, determining that the terminal is in a low mobility state, wherein the first signal strength threshold is less than the second signal strength threshold.
2. The method of claim 1, wherein the receiving, by the terminal, the signal strength threshold corresponding to n cells sent by the access network device comprises:
and the terminal receives a signal strength configuration list sent by the access network equipment, wherein the signal strength configuration list comprises signal strength thresholds corresponding to the n cells.
3. The method according to claim 1 or 2, characterized in that the method further comprises:
the terminal receives a cell reselection time threshold sent by the access network equipment;
when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells, the terminal determines that the terminal is in a low mobility state, including:
and when the signal strength of the n cells of the terminal respectively meets the signal strength threshold corresponding to the n cells and the cell reselection frequency is less than the cell reselection frequency threshold, determining that the terminal is in the low mobility state.
4. The method of claim 3, wherein the receiving, by the terminal, the threshold of cell reselection times sent by the access network device comprises:
and the terminal receives a system information block SIBX sent by the access network equipment, wherein the SIBX comprises the cell reselection time threshold, and X is a positive integer.
5. The method according to claim 1 or 2, characterized in that the method further comprises:
the terminal receives a cell switching frequency threshold sent by the access network equipment;
when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells, the terminal determines that the terminal is in a low mobility state, including:
and when the signal intensity of the n cells of the terminal respectively meets the signal intensity threshold corresponding to the n cells and the cell switching times are less than the cell switching time threshold, determining that the terminal is in the low mobility state.
6. The method of claim 5, wherein the receiving, by the terminal, the threshold of the number of cell handovers sent by the access network device includes:
and the terminal receives a Radio Resource Control (RRC) message sent by the access network equipment, wherein the RRC message comprises the threshold of the cell switching times.
7. The method according to claim 1 or 2,
the n cells are all macro cells, and n is a positive integer;
or the like, or, alternatively,
the n cells include k macro cells and n-k micro cells, and k is a positive integer not greater than n.
8. The method according to claim 1 or 2, characterized in that the method further comprises:
when a serving cell exists at the current position, the terminal receives a signal intensity threshold corresponding to the serving cell sent by the access network equipment;
the terminal measures the signal intensity of the serving cell within a preset time;
and when the signal intensity of the serving cell meets the signal intensity threshold corresponding to the serving cell, the terminal determines that the terminal is in the low mobility state.
9. A signal quality measurement apparatus, the apparatus comprising:
a receiving module configured to receive a signal strength threshold corresponding to n cells sent by an access network device, where n is an integer greater than 2;
a measurement module configured to measure signal strengths of the n cells for a predetermined time;
a determining module, configured to determine that a terminal is in a low mobility state when the signal strengths of the n cells are respectively greater than first signal strength thresholds corresponding to the n cells, and the signal strengths of the n cells are respectively less than second signal strength thresholds corresponding to the n cells, where the first signal strength threshold is less than the second signal strength threshold.
10. The apparatus of claim 9,
the receiving module is configured to receive a signal strength configuration list sent by the access network device, where the signal strength configuration list includes signal strength thresholds corresponding to the n cells.
11. The apparatus of claim 9 or 10, further comprising:
the receiving module is configured to receive a cell reselection time threshold sent by the access network device;
the determining module is configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells, and the cell reselection times are smaller than the cell reselection time threshold.
12. The apparatus of claim 11,
the receiving module is configured to receive a system information block SIB X sent by the access network device, where the SIB X includes the threshold of cell reselection times, and X is a positive integer.
13. The apparatus of claim 9 or 10, further comprising:
the receiving module is configured to receive a cell switching number threshold sent by the access network device;
the determining module is configured to determine that the terminal is in the low mobility state when the signal strengths of the n cells respectively satisfy the signal strength thresholds corresponding to the n cells, and the cell switching times are less than the cell switching time threshold.
14. The apparatus of claim 13,
the receiving module is configured to receive a radio resource control RRC message sent by the access network device, where the RRC message includes the threshold of cell switching times.
15. The apparatus of claim 9 or 10,
the n cells are all macro cells, and n is a positive integer;
or the like, or, alternatively,
the n cells include k macro cells and n-k micro cells, and k is a positive integer not greater than n.
16. The apparatus of claim 9 or 10, further comprising:
the receiving module is configured to receive a signal strength threshold corresponding to a serving cell sent by the access network device when the serving cell exists in a current position;
the measurement module configured to measure a signal strength of the serving cell for a predetermined time;
the determining module is configured to determine that the terminal is in the low mobility state when the signal strength of the serving cell satisfies the signal strength threshold corresponding to the serving cell.
17. A terminal, characterized in that the terminal comprises:
a processor;
a transceiver coupled to the processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to implement the signal quality measurement method of any one of claims 1 to 8 above.
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| PCT/CN2018/123631 WO2020132904A1 (en) | 2018-12-25 | 2018-12-25 | Signal quality measurement method and device, and terminal |
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| WO2023151063A1 (en) * | 2022-02-13 | 2023-08-17 | 北京小米移动软件有限公司 | Measurement relaxation method and apparatus, device, and storage medium |
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| JP3689685B2 (en) * | 2002-06-21 | 2005-08-31 | キヤノン株式会社 | Communication apparatus and program |
| CN101207901A (en) * | 2006-12-19 | 2008-06-25 | 北京三星通信技术研究有限公司 | Method for layer selecting based on pilot frequency intensity adaptable to WCDMA network |
| KR101428816B1 (en) * | 2007-09-28 | 2014-08-12 | 엘지전자 주식회사 | Method for reselecting a cell and detecting whether a terminal is stationay in mobile telecommunications system |
| CN101547465B (en) * | 2008-03-27 | 2011-03-02 | 中兴通讯股份有限公司 | Method for measuring signal quality of mobile channel |
| WO2013039434A1 (en) * | 2011-09-14 | 2013-03-21 | Telefonaktiebolaget L M Ericsson (Publ) | Triggering a handover process based on the activity of a connection |
| WO2014176780A1 (en) * | 2013-05-03 | 2014-11-06 | 华为技术有限公司 | Measurement method, measurement control method and device |
| CN106341357B (en) * | 2015-07-07 | 2020-04-03 | 中国移动通信集团公司 | Downlink frequency offset compensation method and device |
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| CN103947254A (en) * | 2011-11-18 | 2014-07-23 | 高通股份有限公司 | Methods and devices for facilitating modified cell reselection parameters and procedures when access terminals exhibit little or no mobility |
| TW201414338A (en) * | 2012-08-28 | 2014-04-01 | Apple Inc | Battery conservation in stationary conditions for a wireless device |
| CN106454715A (en) * | 2015-08-04 | 2017-02-22 | 中国移动通信集团公司 | Returning method and device after offline of private network in high-speed mobile scene and terminal |
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