CN113133068A - Same-frequency switching method and device for endangered electric quantity terminal - Google Patents
Same-frequency switching method and device for endangered electric quantity terminal Download PDFInfo
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- CN113133068A CN113133068A CN201911417502.3A CN201911417502A CN113133068A CN 113133068 A CN113133068 A CN 113133068A CN 201911417502 A CN201911417502 A CN 201911417502A CN 113133068 A CN113133068 A CN 113133068A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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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
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
Abstract
The invention discloses a same-frequency switching method and a device for an endangered electric quantity terminal, which are applied to a base station, and the method comprises the following steps: receiving an endangered electric quantity alarm signal reported by a terminal; judging whether the uplink signal-to-noise ratio of the terminal is not less than a signal-to-noise ratio threshold value and whether the moving speed of the terminal is not greater than a speed threshold value according to a measurement report reported by the terminal; if so, amplifying the current same-frequency switching hysteresis value to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode; based on the same-frequency switching hysteresis value of the endangered electric quantity mode, a measurement control instruction is issued to the terminal, so that the terminal can detect whether to trigger a first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode; and receiving a first event A3 reported by the terminal, and finishing the cell switching process of the terminal according to the first event A3. The method obtains the same-frequency switching algorithm of the endangered electric quantity mode by modifying the normal same-frequency switching algorithm, and can prolong the residence time of the endangered electric quantity terminal in the service cell.
Description
Technical Field
The invention relates to the technical field of LTE wireless networks, in particular to a same-frequency switching method and device for endangered electric quantity terminals.
Background
Currently, the same-frequency handover algorithm in the LTE system design is only handover based on coverage. The decision of the target cell for the coverage-based same-frequency handover depends on the report of the event A3, and the target cell is obtained from the event A3.
Fig. 2 shows a schematic diagram of the trigger condition and the cancel condition of the event a3 in the prior art. As shown in fig. 2, the trigger conditions are: mn + Ofn + Ocn-Hys > Ms + Ofs + Ocs + Off (equation one), and the above condition lasts for TimeToTrig time. The cancellation conditions are: mn + Ofn + Ocn + Hys < Ms + Ofs + Ocs + Off (formula two), and the above condition lasts for the timetottrig time.
The variables in the above formula have the following meanings: ms and Mn indicate measurement results of the serving cell and the neighboring cell. Hys represents the hysteresis value of the measurement result. The timetottrig indicates a duration of time for which the event entry condition is continuously satisfied. Ofs and Ofn respectively represent frequency offsets of the serving cell and the neighboring cell. And Ocs and Ocn respectively represent the cell specific offset CIO of a service cell and an E-UTRAN adjacent cell. Off denotes the bias of the measurement result.
However, the inventor finds that the following defects exist in the same-frequency switching mode based on the reporting event a3 in the process of implementing the present invention: (1) the difficulty degree of the TimeToTrig and Hys control switching is easily caused by delayed switching to cause call drop when the setting is too large; otherwise, ping-pong handover is easily caused. (2) The switching decision is based on only the RSRP and RSRQ values of the serving cell and the neighboring cell, and there may be a case where the signal-to-noise ratio is worse and the throughput is lower after switching to the target cell. (3) Handover is unavoidable with data transmission interruptions, which ideally would be 12ms user plane interruptions depending on the protocol. The influence of the generated data transmission interruption and time delay on the terminal under normal electric quantity can be ignored, but the terminal under the endangered electric quantity hopes to complete the current service as soon as possible, and the time delay and user plane interruption caused by unnecessary switching need to be avoided, so the prior art is not suitable for the terminal which can only maintain short-time communication under the endangered electric quantity.
Disclosure of Invention
In view of the above problems, the present invention is proposed to provide a method and apparatus for same-frequency handover of an endangered power terminal that overcomes or at least partially solves the above problems.
According to one aspect of the invention, a same-frequency switching method for an endangered electric quantity terminal is provided, and the method is applied to a base station and comprises the following steps:
receiving an endangered electric quantity alarm signal reported by a terminal;
judging whether the uplink signal-to-noise ratio of the terminal is not less than a signal-to-noise ratio threshold value and whether the moving speed of the terminal is not greater than a speed threshold value according to a measurement report reported by the terminal;
if so, amplifying the current same-frequency switching hysteresis value to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode;
based on the same-frequency switching hysteresis value of the endangered electric quantity mode, a measurement control instruction is issued to the terminal, so that the terminal can detect whether to trigger a first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode;
and receiving a first event A3 reported by the terminal, and finishing the cell switching process of the terminal according to the first event A3.
Optionally, the amplifying processing of the current same-frequency switching hysteresis value specifically includes:
and amplifying the current same-frequency switching hysteresis value according to the hysteresis value weighting coefficient.
Optionally, in the case that the terminal does not perform intra-frequency handover, the method further includes:
receiving an endangered electric quantity alarm relieving signal reported by a terminal;
based on the current same-frequency switching hysteresis value, a measurement control instruction is issued to the terminal so that the terminal can detect whether a second event A3 is triggered;
and receiving a second event A3 reported by the terminal, and completing the cell switching process of the terminal according to the second event A3.
Optionally, the terminal calculates the remaining maintenance time of the modem until the battery power is exhausted, and when the remaining maintenance time does not exceed a preset value, an endangered power alarm signal is triggered;
and when the remaining maintaining time exceeds a preset value, triggering an endangered electric quantity alarm releasing signal.
According to another aspect of the present invention, there is provided a same-frequency switching device for an endangered power terminal, where the device is applied to a base station, and the device includes:
the receiving module is suitable for receiving the endangered electric quantity alarm signal reported by the terminal;
the condition judgment module is suitable for judging whether the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value and whether the moving speed of the terminal is not more than the speed threshold value according to the measurement report reported by the terminal;
the adjusting module is suitable for amplifying the current same-frequency switching hysteresis value to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode if the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value and the moving speed of the terminal is not greater than the speed threshold value;
the issuing module is suitable for issuing a measurement control instruction to the terminal based on the same-frequency switching hysteresis value of the endangered electric quantity mode so that the terminal can detect whether to trigger a first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode;
the receiving module is further adapted to: receiving a first event A3 reported by the terminal;
and the same-frequency switching module is suitable for completing the cell switching process of the terminal according to the first event A3.
Optionally, the adjustment module is further adapted to: and amplifying the current same-frequency switching hysteresis value according to the hysteresis value weighting coefficient.
Optionally, the receiving module is further adapted to: under the condition that the terminal does not have the same-frequency switching, receiving an endangered electric quantity alarm removing signal reported by the terminal;
the issuing module is further adapted to: based on the current same-frequency switching hysteresis value, a measurement control instruction is issued to the terminal so that the terminal can detect whether a second event A3 is triggered;
the receiving module is further adapted to: receiving a second event A3 reported by the terminal;
the same-frequency switching module is further adapted to: the cell handover process of the terminal is completed according to the second event a 3.
Optionally, the terminal calculates the remaining maintenance time of the modem until the battery power is exhausted, and when the remaining maintenance time does not exceed a preset value, an endangered power alarm signal is triggered;
and when the remaining maintaining time exceeds a preset value, triggering an endangered electric quantity alarm releasing signal.
According to yet another aspect of the present invention, there is provided a computing device comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction enables the processor to execute the operation corresponding to the same-frequency switching method of the endangered electric quantity terminal.
According to another aspect of the present invention, a computer storage medium is provided, where at least one executable instruction is stored in the storage medium, and the executable instruction causes a processor to execute an operation corresponding to the same-frequency switching method of the endangered power terminal.
The invention discloses a same-frequency switching method and a device of an endangered electric quantity terminal, which are applied to a base station, wherein the method comprises the following steps: receiving an endangered electric quantity alarm signal reported by a terminal; judging whether the uplink signal-to-noise ratio of the terminal is not less than a signal-to-noise ratio threshold value and whether the moving speed of the terminal is not greater than a speed threshold value according to a measurement report reported by the terminal; if so, amplifying the current same-frequency switching hysteresis value to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode; based on the same-frequency switching hysteresis value of the endangered electric quantity mode, a measurement control instruction is issued to the terminal, so that the terminal can detect whether to trigger a first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode; and receiving a first event A3 reported by the terminal, and finishing the cell switching process of the terminal according to the first event A3. The method starts from user perception, improves the existing same-frequency switching algorithm, improves the difficulty of same-frequency switching by judging the channel quality and the moving speed of the endangered electric quantity terminal and modifying the same-frequency switching hysteresis value in the trigger condition of the event A3 under the condition that the endangered electric quantity terminal has good channel quality and low moving speed, prolongs the time of residing in a service cell, so that the endangered electric quantity terminal can finish the current service as soon as possible under the residual electric quantity, and improves the user perception.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a flowchart of a same-frequency switching method for an endangered power terminal according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a trigger condition and a cancel condition of event A3 in the prior art;
fig. 3 shows a flowchart of a same-frequency handover method for an endangered power terminal according to another embodiment of the present invention;
fig. 4 shows a flowchart of starting the same-frequency switching of the endangered electric quantity in the embodiment of the present invention;
fig. 5 shows a flow chart of closing the same-frequency switching of the endangered electric quantity in the embodiment of the present invention;
fig. 6 shows a schematic structural diagram of a same-frequency switching device of an endangered electric quantity terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a computing device provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In the prior art, for terminals with extremely short time for maintaining communication by using electric quantity, special requirements of the terminals are not taken into targeted consideration, so that some important information is not received or successfully sent before the terminal is powered off. For user perception, the endangered power terminals expect to finish data transmission of the current initiated service as soon as possible within the remaining power maintaining time. Based on this, the embodiment of the present invention provides a method capable of improving the difficulty of initiating the same frequency handover, so as to prolong the time for the endangered terminal to reside in the serving cell, enable the terminal to complete the currently initiated service as soon as possible, and avoid the transmission terminal and the time delay caused by unnecessary same frequency handover.
Fig. 1 shows a flowchart of a same-frequency switching method for an endangered power terminal according to an embodiment of the present invention, where the method is applied to a base station, the base station issues measurement control according to network configuration, and the terminal reports a measurement report according to the received measurement control. As shown in fig. 1, the method comprises the steps of:
step S101, receiving an endangered electric quantity alarm signal reported by a terminal.
The terminal calculates the time that the modem can maintain after the modem is exhausted from a battery to shutdown by using a self algorithm according to the self power consumption condition, and when the time is lower than a certain threshold, an endangered electric quantity alarm signal is triggered and reported to the base station, so that the terminal is the endangered electric quantity terminal.
Step S102, according to the measurement report reported by the terminal, judging whether the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value and whether the moving speed of the terminal is not more than the speed threshold value.
After receiving the endangered electric quantity alarm signal reported by the terminal, the base station firstly judges whether the measurement control needs to be modified according to the measurement report reported by the terminal, and specifically judges whether the uplink signal-to-noise ratio of the terminal is greater than or equal to the signal-to-noise ratio threshold value and whether the moving speed of the terminal is less than or equal to the speed threshold value.
And S103, if the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value and the moving speed of the terminal is not greater than the speed threshold value, amplifying the current same-frequency switching hysteresis value to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode.
When the terminal is in an endangered power condition, the channel quality is poor, the data transmission rate is low, and the terminal resides in the serving cell, but the completion time of the initiated service is prolonged, and a target cell with better coverage needs to be switched. However, when the moving speed of the terminal is high, the terminal may leave the coverage of the resident cell at any time to cause call drop, and also needs to initiate handover. On the contrary, if the current channel quality of the terminal is good and the moving speed is low, the residence time in the serving cell can be prolonged, so that the terminal can complete the service currently initiated as soon as possible, and at this time, it is not necessary to initiate a handover but to bear the interruption and delay of data transmission caused by the handover.
Based on this, in the embodiment of the present invention, if it is determined that the uplink snr of the terminal is not less than the snr threshold and the moving speed is not greater than the speed threshold, it indicates that the current channel quality of the terminal is good, and the moving speed is low, a certain modification is performed to make intra-frequency handover more difficult to initiate, and the trigger condition of the event a3 is more severe. Specifically, the common-frequency switching hysteresis value in the trigger condition of the event a3 is amplified, that is, the Hys in the formula one is amplified, so as to obtain the common-frequency switching hysteresis value of the endangered power mode. As can be known from the formula i, compared with the normal situation, in the endangered power mode, the trigger condition of the event a3 can be satisfied only by requiring a larger measurement result of the terminal, and then, by such amplification and modification, the same-frequency switching in the endangered power mode is more difficult to initiate.
In addition, if the uplink signal-to-noise ratio of the terminal is smaller than the signal-to-noise ratio threshold value or the moving speed of the terminal is greater than the speed threshold value, the current same-frequency switching hysteresis value is not processed, and the same-frequency switching processing of the terminal is carried out according to a same-frequency switching judgment method under normal conditions.
And step S104, based on the same-frequency switching hysteresis value of the endangered electric quantity mode, issuing a measurement control instruction to the terminal so that the terminal can detect whether to trigger the first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode.
After modifying the same-frequency switching hysteresis value, the base station needs to inform the modification to the terminal, so that the terminal detects whether an event A3 is triggered according to a trigger condition of an event A3 formed by the modified same-frequency switching hysteresis value, and reports a triggered first event A3 to the base station.
And step S105, receiving a first event A3 reported by the terminal, and completing the switching processing of the terminal cell according to the first event A3.
And the base station receives a first event A3 reported by the terminal, extracts the target cell according to the first event A3 and completes the switching from the serving cell to the target cell.
According to the same-frequency switching method of the endangered electric quantity terminal, the method starts from user perception, the existing same-frequency switching algorithm is improved, the difficulty of same-frequency switching is increased by judging the channel quality and the moving speed of the endangered electric quantity terminal and modifying a same-frequency switching hysteresis value in the trigger condition of an event A3 under the condition that the endangered electric quantity terminal is good in channel quality and low in moving speed, and the time of residing in a service cell is prolonged, so that the endangered electric quantity terminal can finish the current service as soon as possible under the residual electric quantity, and the user perception is improved.
Fig. 3 shows a flowchart of a same-frequency handover method for an endangered power terminal according to another embodiment of the present invention, where the method is applied to a base station, the base station issues measurement control according to network configuration, and the terminal reports a measurement report according to the received measurement control. The method specifically comprises the following steps:
step S301, receiving an endangered electric quantity alarm signal reported by a terminal.
Specifically, the terminal calculates the remaining maintenance time of the modem until the battery power is exhausted, and triggers the power alarm signal when the remaining maintenance time does not exceed a preset value. And the endangered electric quantity terminal reports the endangered electric quantity alarm signal to the base station.
Step S302, according to the measurement report reported by the terminal, judging whether the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value and whether the moving speed of the terminal is not more than the speed threshold value.
After receiving an endangered electric quantity alarm signal reported by a terminal, a base station starts the same-frequency switching judgment of the endangered electric quantity, and enters a condition judgment and modification measurement control link, wherein the same-frequency switching hysteresis value can be adjusted according to the judgment condition. Firstly, condition judgment is carried out according to a measurement report reported by a terminal, and whether the uplink signal-to-noise ratio of the terminal is greater than or equal to a signal-to-noise ratio threshold value and whether the moving speed of the terminal is less than or equal to a speed threshold value are specifically judged.
And S303, if the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value and the moving speed of the terminal is not greater than the speed threshold value, amplifying the current same-frequency switching hysteresis value according to the hysteresis value weighting coefficient to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode.
Then, the measurement control is modified according to the result of the decision, specifically, if the result of the decision is: the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value, and the moving speed is not greater than the speed threshold value, which indicates that the quality of the current channel of the endangered power terminal is good, and the moving speed is low. In this case, the same-frequency handover hysteresis value is modified, so that the same-frequency handover is more difficult to initiate, the residence time in the serving cell is prolonged, and the terminal can complete the current service as soon as possible.
Specifically, according to the hysteresis value weighting coefficient α, where α is a number greater than zero, the current common-frequency switching hysteresis value is amplified to obtain a common-frequency switching hysteresis value of the endangered electric quantity mode, and a specific calculation formula is as follows:
hys represents a same-frequency switching hysteresis value of an endangered electric quantity mode, namely a hysteresis value used by switching of the same-frequency A3 of the endangered electric quantity, Hys _ o represents a hysteresis value used by switching of a normal same-frequency A3, and alpha represents a same-frequency switching hysteresis weighting coefficient (namely a hysteresis value weighting coefficient) of the endangered electric quantity; SINR _ ULiThe uplink signal-to-noise ratio, SINR _ UL, of the user measured by the ith base station is shownTargetIs an uplink signal-to-noise ratio target threshold; v. ofiIndicates the i-th base station's measurement of the user's moving speed, vTargetThe target thresholds N and M for the moving speed represent the number of times of calculating the mean of the signal-to-noise ratio and the moving speed, respectively.
On the contrary, if the uplink snr of the terminal is less than the snr threshold, the channel quality is poor, the data transmission rate is low, and the terminal resides in the serving cell, which will prolong the completion duration of the initiated service, and it is necessary to switch the target cell with better coverage. If the moving speed of the terminal is high, the terminal can be out of the coverage of the resident cell at any time to cause call drop, and the handover also needs to be initiated. Therefore, in this case, the same-frequency switching hysteresis value is kept normal, and the same-frequency switching algorithm is kept normal.
Step S304, based on the same-frequency switching hysteresis value of the endangered electric quantity mode, a measurement control instruction is issued to the terminal, so that the terminal can detect whether to trigger a first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode.
After the base station modifies the hysteresis value, the base station needs to inform the terminal of the modification, and in the subsequent process, the terminal judges whether to trigger the event A3 according to the modified same-frequency switching hysteresis value and a judgment condition formed by the modified same-frequency switching hysteresis value. Specifically, a measurement control instruction is issued to the terminal, the measurement control instruction carries a same-frequency switching hysteresis value of the endangered power mode, the terminal judges whether to trigger a first event A3 according to an event A3 triggering condition formed by the same-frequency switching hysteresis value of the endangered power mode, and reports the triggered first event A3 to the base station.
Step S305, under the condition that the terminal does not have the same frequency switching, receiving an endangered electric quantity alarm removing signal reported by the terminal.
After the same-frequency switching hysteresis value is modified, if the terminal does not report an event A3 all the time and the endangered electric quantity terminal does not perform same-frequency switching, after the terminal is charged, the electric quantity is gradually restored to be above the endangered electric quantity threshold of the modem due to charging, and the terminal triggers an endangered electric quantity alarm release signal and reports the endangered electric quantity alarm release signal to the base station.
Step S306, based on the current same-frequency switching hysteresis value, a measurement control instruction is issued to the terminal so that the terminal can detect whether to trigger a second event A3.
At this time, the endangered electric quantity same-frequency switching judgment is closed, the same-frequency switching judgment under the normal condition is started, namely, the measurement control instruction under the normal condition is issued to the terminal based on the normal same-frequency switching hysteresis value, and the terminal detects whether a second event A3 is triggered according to an event A3 triggering condition formed by the normal unamplified hysteresis value.
And step S307, receiving a second event A3 reported by the terminal, and completing the cell switching process of the terminal according to the second event A3.
When the terminal detects that the triggering condition of the second event A3 is met, the base station reports the second event A3, determines a target cell according to the second event A3 and switches the terminal to the target cell.
In the prior art, for terminals with extremely short time for maintaining communication by using electric quantity, special requirements of the terminals are not taken into targeted consideration, so that some important information is not received or successfully sent before the terminal is powered off. For user perception, the endangered power terminals expect to finish data transmission of the current initiated service as soon as possible within the remaining power maintaining time.
According to the same-frequency switching method of the endangered electric quantity terminal, provided by the embodiment of the invention, by introducing the hysteresis value weighting coefficient, when the channel quality of the endangered electric quantity terminal is good and the moving speed is low, the same-frequency switching condition is more difficult to achieve, the time of residing in a service cell is prolonged, and the influence of the interruption and the time delay of data transmission on the completion of the service of the terminal can be avoided. Secondly, in the calculation of the same-frequency switching hysteresis value, the channel condition of the user and the moving speed of the user are considered, so that the initiated data transmission of the endangered electric quantity terminal can be completed as soon as possible under the residual electric quantity, and the user perception is improved. The method enables interruption under the endangered electric quantity to be achieved, before the distance between the interruption and the battery is exhausted, more reasonable and effective mobility management can be achieved under a cellular network, meanwhile, after the electric quantity of the terminal is recovered, the same-frequency switching of the endangered electric quantity is closed, and the same-frequency switching of the terminal is processed according to the same-frequency switching algorithm of the endangered electric quantity under the normal condition.
The method of the embodiments of the present invention is described below in a specific interactive flowchart.
Fig. 4 shows a flowchart for starting the same-frequency switching of the endangered electric quantity in the embodiment of the present invention, as shown in fig. 4, before the terminal triggers no modem and an endangered electric quantity alarm, the source cell base station normally issues measurement control, and simultaneously the terminal normally reports a measurement report, and the source cell base station performs a switching decision according to a normal same-frequency switching algorithm, and decides to which target cell the terminal is switched.
When the terminal triggers the modem to alarm the endangered electric quantity, the alarm is reported to the source cell base station, and at the moment, the source cell base station starts the endangered electric quantity same-frequency switching judgment and enters a condition judgment and modification measurement control link. After entering a condition decision and modification measurement control link, firstly, according to a decision result of an uplink signal-to-noise ratio and a moving speed of a terminal, if the signal-to-noise ratio of the terminal is high and the moving speed is low, entering modification measurement control, namely modifying a trigger condition of an event A3, and modifying Hys in the formula I into (1+ alpha) Hys, wherein alpha refers to a hysteresis value weighting coefficient, and alpha is a value greater than zero. And the base station of the source cell of the link can continuously update the same-frequency switching hysteresis value of the terminal according to the uplink signal-to-noise ratio and the moving speed of the terminal and send and inform the terminal.
After the base station of the source cell modifies the same-frequency switching hysteresis value, the base station of the source cell issues measurement control based on the endangered electric quantity based on the modified same-frequency switching hysteresis value, the terminal reports a measurement report, the base station of the source cell makes switching judgment to judge which target cell is specifically switched to, the terminal sends a switching execution instruction by issuing a switching execution instruction to the terminal and sends a switching request to a target cell smaller than the base station, and finally, the terminal randomly switches in the base station of the target cell and completes the switching from the base station of the source cell to the base station of the target cell,
fig. 5 shows a flowchart of closing the same frequency handover of the endangered power amount in the embodiment of the present invention, and as shown in fig. 5, in this example, after the same frequency handover of the endangered power amount is started, the cell of the terminal is not handed over. After the terminal is charged, when the electric quantity is gradually recovered to be above the electric quantity alarm threshold, the alarm of the endangered electric quantity of the modem is removed, and the alarm is reported to the source cell base station, after the source cell base station acquires the information, the same-frequency switching judgment of the endangered electric quantity is closed, the same-frequency switching judgment under the normal condition is started, and the measurement control under the normal condition is issued.
Fig. 6 shows a schematic structural diagram of an embodiment of a same-frequency switching device of an endangered electric quantity terminal, and the device is applied to a base station. As shown in fig. 6, the apparatus includes:
the receiving module 61 is suitable for receiving the endangered electric quantity alarm signal reported by the terminal;
the condition judgment module 62 is adapted to judge whether the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value and whether the moving speed of the terminal is not greater than the speed threshold value according to the measurement report reported by the terminal;
the adjusting module 63 is adapted to amplify the current same-frequency switching hysteresis value to obtain a same-frequency switching hysteresis value of the endangered electric quantity mode if the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value and the moving speed of the terminal is not greater than the speed threshold value;
the issuing module 64 is suitable for issuing a measurement control instruction to the terminal based on the same-frequency switching hysteresis value of the endangered electric quantity mode so that the terminal can detect whether to trigger the first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode;
the receiving module 61 is further adapted to: receiving a first event A3 reported by the terminal;
and the same-frequency switching module 65 is suitable for completing the cell switching process of the terminal according to the first event a 3.
In an alternative manner, the adjustment module 63 is further adapted to: and amplifying the current same-frequency switching hysteresis value according to the hysteresis value weighting coefficient.
In an alternative manner, the receiving module 61 is further adapted to: under the condition that the terminal does not have the same-frequency switching, receiving an endangered electric quantity alarm removing signal reported by the terminal;
the issuing module 64 is further adapted to: based on the current same-frequency switching hysteresis value, a measurement control instruction is issued to the terminal so that the terminal can detect whether a second event A3 is triggered;
the receiving module 61 is further adapted to: receiving a second event A3 reported by the terminal;
the same-frequency switching module 65 is further adapted to: the cell handover process of the terminal is completed according to the second event a 3.
In an optional mode, the terminal calculates the remaining maintenance time of the modem until the battery power is exhausted, and when the remaining maintenance time does not exceed a preset value, an endangered power alarm signal is triggered;
and when the remaining maintaining time exceeds a preset value, triggering an endangered electric quantity alarm releasing signal.
The embodiment of the invention provides a nonvolatile computer storage medium, wherein at least one executable instruction is stored in the computer storage medium, and the computer executable instruction can execute the same-frequency switching method of the endangered electric quantity terminal in any method embodiment.
The executable instructions may be specifically configured to cause the processor to:
receiving an endangered electric quantity alarm signal reported by a terminal;
judging whether the uplink signal-to-noise ratio of the terminal is not less than a signal-to-noise ratio threshold value and whether the moving speed of the terminal is not greater than a speed threshold value according to a measurement report reported by the terminal;
if so, amplifying the current same-frequency switching hysteresis value to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode;
based on the same-frequency switching hysteresis value of the endangered electric quantity mode, a measurement control instruction is issued to the terminal, so that the terminal can detect whether to trigger a first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode;
and receiving a first event A3 reported by the terminal, and finishing the cell switching process of the terminal according to the first event A3.
In an alternative, the executable instructions cause the processor to:
and amplifying the current same-frequency switching hysteresis value according to the hysteresis value weighting coefficient.
In an alternative, the executable instructions cause the processor to: receiving an endangered electric quantity alarm relieving signal reported by a terminal;
based on the current same-frequency switching hysteresis value, a measurement control instruction is issued to the terminal so that the terminal can detect whether a second event A3 is triggered;
and receiving a second event A3 reported by the terminal, and completing the cell switching process of the terminal according to the second event A3.
In an optional mode, the terminal calculates the remaining maintenance time of the modem until the battery power is exhausted, and when the remaining maintenance time does not exceed a preset value, an endangered power alarm signal is triggered;
and when the remaining maintaining time exceeds a preset value, triggering an endangered electric quantity alarm releasing signal.
Fig. 7 is a schematic structural diagram of an embodiment of a computing device according to the present invention, and a specific embodiment of the present invention does not limit a specific implementation of the computing device.
As shown in fig. 7, the computing device may include: a processor (processor)702, a Communications Interface 704, a memory 706, and a communication bus 708.
Wherein: the processor 702, communication interface 704, and memory 706 communicate with each other via a communication bus 708. A communication interface 704 for communicating with network elements of other devices, such as clients or other servers. The processor 702 is configured to execute the program 710, and may specifically execute the relevant steps in the same-frequency handover method embodiment for an endangered power terminal of a computing device.
In particular, the program 710 may include program code that includes computer operating instructions.
The processor 702 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement an embodiment of the present invention. The computing device includes one or more processors, which may be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs.
The memory 706 stores a program 710. The memory 706 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The program 710 may specifically be used to cause the processor 702 to perform the following operations:
receiving an endangered electric quantity alarm signal reported by a terminal;
judging whether the uplink signal-to-noise ratio of the terminal is not less than a signal-to-noise ratio threshold value and whether the moving speed of the terminal is not greater than a speed threshold value according to a measurement report reported by the terminal;
if so, amplifying the current same-frequency switching hysteresis value to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode;
based on the same-frequency switching hysteresis value of the endangered electric quantity mode, a measurement control instruction is issued to the terminal, so that the terminal can detect whether to trigger a first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode;
and receiving a first event A3 reported by the terminal, and finishing the cell switching process of the terminal according to the first event A3.
In an alternative, the program 710 causes the processor 702 to:
and amplifying the current same-frequency switching hysteresis value according to the hysteresis value weighting coefficient.
In an alternative, the program 710 causes the processor 702 to:
receiving an endangered electric quantity alarm relieving signal reported by a terminal;
based on the current same-frequency switching hysteresis value, a measurement control instruction is issued to the terminal so that the terminal can detect whether a second event A3 is triggered;
and receiving a second event A3 reported by the terminal, and completing the cell switching process of the terminal according to the second event A3.
In an optional mode, the terminal calculates the remaining maintenance time of the modem until the battery power is exhausted, and when the remaining maintenance time does not exceed a preset value, an endangered power alarm signal is triggered;
and when the remaining maintaining time exceeds a preset value, triggering an endangered electric quantity alarm releasing signal.
The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. In addition, embodiments of the present invention are not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specified otherwise.
Claims (10)
1. A same-frequency switching method for an endangered electric quantity terminal is applied to a base station and comprises the following steps:
receiving an endangered electric quantity alarm signal reported by a terminal;
judging whether the uplink signal-to-noise ratio of the terminal is not less than a signal-to-noise ratio threshold value and whether the moving speed of the terminal is not greater than a speed threshold value according to a measurement report reported by the terminal;
if so, amplifying the current same-frequency switching hysteresis value to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode;
based on the same-frequency switching hysteresis value of the endangered electric quantity mode, issuing a measurement control instruction to a terminal so that the terminal can detect whether to trigger a first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode;
and receiving a first event A3 reported by the terminal, and finishing the cell switching process of the terminal according to the first event A3.
2. The method according to claim 1, wherein the amplifying the current intra-frequency switching hysteresis value specifically comprises:
and amplifying the current same-frequency switching hysteresis value according to the hysteresis value weighting coefficient.
3. The method according to claim 2, wherein in case no intra-frequency handover occurs at the terminal, the method further comprises:
receiving an endangered electric quantity alarm relieving signal reported by a terminal;
based on the current same-frequency switching hysteresis value, a measurement control instruction is issued to a terminal so that the terminal can detect whether a second event A3 is triggered;
and receiving a second event A3 reported by the terminal, and completing the cell switching process of the terminal according to the second event A3.
4. The method of claim 1, wherein the terminal calculates a remaining maintenance time to the battery power exhaustion modem, and triggers an endangered power alarm signal when the remaining maintenance time does not exceed a predetermined value;
and triggering an endangered electric quantity alarm releasing signal when the residual maintaining time exceeds a preset value.
5. A same-frequency switching device for an endangered electric quantity terminal, which is applied to a base station, comprises:
the receiving module is suitable for receiving the endangered electric quantity alarm signal reported by the terminal;
the condition judgment module is suitable for judging whether the uplink signal-to-noise ratio of the terminal is not less than a signal-to-noise ratio threshold value and whether the moving speed of the terminal is not more than a speed threshold value according to a measurement report reported by the terminal;
the adjusting module is suitable for amplifying the current same-frequency switching hysteresis value to obtain the same-frequency switching hysteresis value of the endangered electric quantity mode if the uplink signal-to-noise ratio of the terminal is not less than the signal-to-noise ratio threshold value and the moving speed of the terminal is not greater than the speed threshold value;
the issuing module is suitable for issuing a measurement control instruction to the terminal based on the same-frequency switching hysteresis value of the endangered electric quantity mode so that the terminal can detect whether to trigger a first event A3 according to the same-frequency switching hysteresis value of the endangered electric quantity mode;
the receiving module is further adapted to: receiving a first event A3 reported by the terminal;
and the same-frequency switching module is suitable for completing the cell switching processing of the terminal according to the first event A3.
6. The apparatus of claim 5, wherein the adjustment module is further adapted to: and amplifying the current same-frequency switching hysteresis value according to the hysteresis value weighting coefficient.
7. The apparatus of claim 6, wherein the receiving means is further adapted to: under the condition that the terminal does not have the same-frequency switching, receiving an endangered electric quantity alarm removing signal reported by the terminal;
the issuing module is further adapted to: based on the current same-frequency switching hysteresis value, a measurement control instruction is issued to a terminal so that the terminal can detect whether a second event A3 is triggered;
the receiving module is further adapted to: receiving a second event A3 reported by the terminal;
the same frequency switching module is further adapted to: and finishing the cell switching process of the terminal according to the second event A3.
8. The apparatus of claim 5, wherein the terminal calculates a remaining maintenance time to the battery power draining modem, and triggers an endangered power warning signal when the remaining maintenance time does not exceed a predetermined value;
and triggering an endangered electric quantity alarm releasing signal when the residual maintaining time exceeds a preset value.
9. A computing device, comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction enables the processor to execute the operation corresponding to the same-frequency switching method of the endangered power terminal according to any one of claims 1 to 4.
10. A computer storage medium, wherein at least one executable instruction is stored in the storage medium, and the executable instruction causes a processor to execute an operation corresponding to the same-frequency switching method of the endangered power terminal according to any one of claims 1 to 4.
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