CN111711980B - Method for reducing power consumption of drive test terminal - Google Patents
Method for reducing power consumption of drive test terminal Download PDFInfo
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- CN111711980B CN111711980B CN202010363950.6A CN202010363950A CN111711980B CN 111711980 B CN111711980 B CN 111711980B CN 202010363950 A CN202010363950 A CN 202010363950A CN 111711980 B CN111711980 B CN 111711980B
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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
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a method for reducing power consumption of a drive test terminal, which comprises the following steps: s1, judging whether scheduling information is not received in N1 continuous PDCCH periods by a drive test terminal in a Connected state, and if so, returning a resident subband by the drive test terminal; s2, judging whether the scheduling information is not received in N2 continuous PDCCH periods or not by the drive test terminal of the resident subband, if so, entering an Idle state by the drive test terminal, performing DRX according to a configured DRX paging period, and starting a first timer T3324 and a second timer T3412; s3, if the first timer T3324 is overtime, entering a PSM state; s4, if the second timer T3412 is overtime, the drive test terminal exits from the PSM state, initiates TAU operation and returns to the Connected state; the PDCCH period is unit transmission time of the 230MHz frequency band private network wireless communication system, and includes control information and data transmission time. The invention can automatically enter the deep sleep mode by utilizing the characteristic that the measurement and report operation cannot be carried out during the non-working period, thereby reducing the power consumption and prolonging the power supply time of the battery.
Description
Technical Field
The invention relates to the technical field of energy consumption of a drive test terminal, in particular to a method for reducing power consumption of the drive test terminal.
Background
At present, the 230MHz frequency band is mainly applied to data transmission radio stations for carrying out remote data acquisition, and the provided rate is very low, so that the 230MHz frequency band can only be used for some simple communication applications, and the increasing service requirements of a smart power grid and a sensing network cannot be met. According to future planning of a national power grid, a new broadband communication technology is required to be found, and service requirements of six fields of network distribution automation, load management, power utilization information acquisition, intelligent power grid user service, emergency repair and special area video monitoring are met.
The 230MHz frequency band private network wireless communication system based on TD-LTE (Time Division-Long Term Evolution) technology provides a better solution for the requirements, and forms a new generation of flexible multi-service communication system with low power consumption, high frequency spectrum utilization rate and high reliability. The method can meet the service requirement of the power load monitoring system to the maximum extent, and simultaneously provides solid technical accumulation and application demonstration for the next generation network planning of the national power grid.
In the process of constructing and optimizing the 230MHz frequency band private network wireless communication system, a worker needs to perform signal measurement and data acquisition on network performance in a network by using a drive test terminal so as to obtain measurement results of signal quality, network state, signaling flow, data service QoS and the like of a current position and report the measurement results, so that the current network performance can be controlled. Therefore, the drive test terminal is very important in actual network deployment.
At present, a 230MHz frequency band private network wireless communication system has two working states: connected drive test terminals have a relatively high power consumption, and Idle drive test terminals have a lower power consumption than Connected drive test terminals, but are not negligible for battery-powered handheld drive test terminals. The function of the drive test terminal is greatly different from that of a common terminal, the drive test terminal works in stages, and during the working period, transmission signals need to be measured and reported frequently, so that the power consumption is much higher than that of the common terminal, and during the non-working period, the measurement and reporting operation is not needed. Because the drive test terminal is a handheld portable terminal, the mobility is strong, and workers work outdoors for a long time and are inconvenient to charge the drive test terminal, the power consumption of the drive test terminal is reduced and the working duration of the drive test terminal is prolonged based on the working characteristics of the 230MHz drive test terminal. It is therefore desirable to provide a method for a drive test terminal that further reduces power consumption.
Disclosure of Invention
The invention solves the problem of high power consumption of the drive test terminal, provides a method for reducing the power consumption of the drive test terminal, introduces a PSM state on the basis of the original Connected state and Idle state of a 230MHz frequency band private network wireless communication system, and can automatically enter a deep sleep mode by utilizing the characteristic that the measurement and report operation cannot be carried out during the non-working period so as to achieve the effect of approaching shutdown, thereby reducing the power consumption and prolonging the power supply time of a battery.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a method for reducing power consumption of a drive test terminal comprises the following steps:
s1, judging whether scheduling information is not received in N1 continuous PDCCH periods by a drive test terminal in a Connected state, and if so, returning a resident subband by the drive test terminal;
s2, judging whether the scheduling information is not received in N2 continuous PDCCH periods or not by the drive test terminal of the resident subband, if so, entering an Idle state by the drive test terminal, performing DRX according to a configured DRX paging period, and starting a first timer T3324 and a second timer T3412;
s3, if the first timer T3324 is overtime, entering a PSM state;
s4, if the second timer T3412 is overtime, the drive test terminal exits from the PSM state, initiates TAU operation and returns to the Connected state;
the PDCCH period is a unit transmission time of the 230MHz band private network wireless communication system, and includes control information and data transmission time.
The PSM state is introduced on the basis of the original Connected state and Idle state of the 230MHz frequency band private network wireless communication system, and the characteristic that measurement and reporting operations cannot be carried out during non-working period is utilized, so that the wireless communication system can automatically enter a deep sleep mode to achieve the effect of approaching shutdown, thereby reducing power consumption and prolonging the power supply time of a battery.
Preferably, when entering the PSM state, the drive test terminal closes the transceiver, maintains the state of registering the terminal to the network, does not listen to any channel message, is unreachable for signaling, cannot receive downlink data, and does not need to reattach or reestablish the PDN connection.
Preferably, the time allocation range of the first timer T3324 is 2s to 186min, and the time allocation range of the second timer T3412 is 54min to 310h.
Preferably, S5 is further included, and the time interval in Idle state and the time interval in PSM state are adjusted by monitoring the operation activity monitoring window.
Preferably, the step S5 specifically includes:
s501, when a road test terminal accesses a network, a base station judges whether the type of the currently accessed terminal is a road test terminal, if so, the base station configures a window coefficient w for the currently accessed terminal when establishing connection;
s502, the drive test terminal calculates the length W of a work activity monitoring window, wherein W = W is the PDCCH period;
s503, the drive test terminal periodically performs work statistics, if the period is up, the drive test terminal performs statistics on the sum M of the times of data detection and reporting under a Connected state of W time length before the current time, different times ranges respectively correspond to different work activity levels, the M is compared with a set work activity level threshold th, and the work activity level corresponding to the drive test terminal at the moment is determined;
s504, the drive test terminal initiates TAU operation, and adjusts the time interval of Idle state and the time interval in PSM state to the time interval corresponding to the working activity level.
In order to meet the use requirement of the drive test terminal and save the power for the drive test terminal when the working activity is not high, the time interval of the Idle state and the PSM state needs to be set reasonably. The PSM state duration is adaptively adjusted by combining the current working activity level, so that the balance between the working time and the energy-saving time is achieved, the aim of saving power can be achieved without shutdown and startup operations by workers, and the method is suitable for the working characteristics of the drive test terminal.
The length W of the work activity monitoring window only includes the length of a plurality of Connected state time periods, the length of the time periods in the idle state and the PSM state is not counted therein, the sum of the times of data detection and reporting in the W time window is counted, and the corresponding work activity level and the time interval between the first timer T3324 and the second timer T3412 are obtained by comparing with the work activity level threshold th, where W is a multiple of the PDCCH period.
Preferably, the work activity level threshold th includes:
th1,th2,th3,th4,…,thn；
the time interval in the Idle state corresponds to the work activity level and comprises the following steps:
T0_0，T0_1，T0_2，T0_3，…,T0_(n-1)；
the time interval in the PSM state corresponding to the working activity level comprises:
T1_0，T1_1，T1_2，T1_3，…,T1_(n-1)；
the th1, th2, th3, th4, \ 8230, the thn is sequentially increased, the T0_0, T0_1, T0_2, T0_3, \ 8230, the T0_ (n-1) is sequentially decreased, and the T1_0, T1_1, T1_2, T1_3, \ 8230, the T1_ (n-1) is sequentially decreased.
Preferably, the TAU operation specifically includes: the currently obtained time lengths of the first timer T3324 and the second timer T3412 are notified to the core network through the TAU Request, the core network notifies the drive test terminal of the new time length configured for the first timer T3324 and the second timer T3412 through the TAUACCept, and the drive test terminal uses the new time length to work.
Preferably, if the drive test terminal actively transmits uplink data, the drive test terminal exits from the PSM state and returns to the Connected state.
Preferably, before comparing the M value with the set threshold th of the level of operational activity, the method further includes: the current obtained M value and the M obtained in the last period 0 The absolute value of the difference of the values is compared with a threshold Mth, if | M-M 0 |>And Mth, comparing the M value with a set working activity level threshold th, otherwise, not comparing the M value with the set working activity level threshold th, and preventing the ping-pong effect from being adjusted and adjusting too frequently.
The invention has the following beneficial effects: the PSM state is introduced on the basis of the original Connected state and Idle state of the 230MHz frequency band private network wireless communication system, and the characteristic that measurement and reporting operations cannot be carried out during non-working period is utilized, so that the wireless communication system can automatically enter a deep sleep mode to achieve the effect of approaching shutdown, thereby reducing power consumption and prolonging the power supply time of a battery; the PSM state duration is adaptively adjusted by combining the current working activity level, so that the balance between the working time and the energy-saving time is achieved, the aim of saving electricity can be fulfilled without shutdown and startup operations of workers, and the method is suitable for the working characteristics of a drive test terminal.
Drawings
FIG. 1 is a diagram illustrating the transition of the operating state in the present embodiment;
FIG. 2 is a diagram of a work activity monitoring window and a statistical period in the present embodiment;
wherein: 1. connected state 2, idle state 3, PSM state 4, DRX paging cycle 5, active monitoring window length W.
Detailed Description
Example (b):
the embodiment provides a method for reducing power consumption of a drive test terminal, and with reference to fig. 1, the method includes the following steps:
s1, judging whether scheduling information is not received in N1 continuous PDCCH periods by a drive test terminal in a Connected state, and if so, returning a resident subband by the drive test terminal;
s2, judging whether the scheduling information is not received in N2 continuous PDCCH periods or not by the drive test terminal of the resident subband, if so, entering an Idle state by the drive test terminal, performing DRX according to a configured DRX paging period, and starting a first timer T3324 and a second timer T3412;
s3, if the first timer T3324 is overtime, entering a PSM state; when entering PSM state, the drive test terminal closes the signal transceiver, keeps the state of terminal registration network access, does not monitor any channel information, has unreachable signaling, cannot receive downlink data, and does not need to re-attach or re-establish PDN connection. The time allocation range of the first timer T3324 is 2s to 186min.
S4, if the second timer T3412 is overtime, the drive test terminal exits from the PSM state, initiates a TAU operation, and returns to the Connected state, where the time allocation range of the second timer T3412 is 54min to 310h.
The PSM state is introduced on the basis of the original Connected state and Idle state of the 230MHz frequency band private network wireless communication system, and the characteristic that measurement and reporting operations cannot be carried out during non-working period is utilized, so that the wireless communication system can automatically enter a deep sleep mode to achieve the effect of approaching shutdown, thereby reducing power consumption and prolonging the power supply time of a battery.
Referring to fig. 2, the method further includes S5 adjusting the time interval in the Idle state and the time interval in the PSM state by monitoring the operational activity monitoring window.
Step S5 specifically includes:
s501, when a road test terminal is accessed into a network, a base station judges whether the type of the currently accessed terminal is a road test terminal, if so, the base station configures a window coefficient w for the currently accessed terminal when connection is established;
s502, the drive test terminal calculates the length W of a work activity monitoring window, wherein W = W is the PDCCH period;
s503, the drive test terminal periodically performs work statistics, and if the period is up, the drive test terminal performs statistics on a value M of a sum of times of data detection and reporting in a Connected state of a W time length before the current time, where different time ranges respectively correspond to different work activity levels, specifically including: the current obtained M value and the M obtained in the last period 0 The absolute value of the difference of the values is compared with a threshold Mth, if | M-M 0 |>And Mth, comparing the M value with a set working activity level threshold th, otherwise not comparing the M value with the set working activity level threshold th, and preventing the ping-pong effect from being adjusted and adjusting too frequently.
Comparing the M value with a set working activity level threshold th, and determining the working activity level corresponding to the drive test terminal at the moment;
s504, the drive test terminal initiates TAU operation, and adjusts the time interval of Idle state and the time interval in PSM state to the time interval corresponding to the working activity level.
In order to meet the use requirement of the drive test terminal and save the power for the drive test terminal when the working activity is not high, the time interval of the Idle state and the PSM state needs to be reasonably set. The PSM state duration is adaptively adjusted by combining the current working activity level, so that the balance between the working time and the energy-saving time is achieved, the aim of saving electricity can be fulfilled without shutdown and startup operations of workers, and the method is suitable for the working characteristics of a drive test terminal.
The length W of the work activity monitoring window only includes the length of a plurality of Connected state time periods, the length of the time periods in the idle state and the PSM state is not counted therein, the sum of the times of data detection and reporting in the W time window is counted, and the corresponding work activity level and the time interval between the first timer T3324 and the second timer T3412 are obtained by comparing with the work activity level threshold th, where W is a multiple of the PDCCH period.
The operational activity level threshold th, referred to the following table, includes:
th1,th2,th3,th4,…,thn；
the time interval in Idle state corresponds to the work activity level and comprises the following steps:
T0_0，T0_1，T0_2，T0_3，…,T0_(n-1)；
the time interval in PSM corresponds to an operational activity level comprising:
T1_0，T1_1，T1_2，T1_3，…,T1_(n-1)；
th1, th2, th3, th4, \ 8230, thn increases in sequence, T0_0, T0_1, T0_2, T0_3, \ 8230,t0_ (n-1) is sequentially decreased The content of the organic acid is low,t1_0, T1_1, T1_2, T1_3, \ 8230;, T1_ (n-1) decrease sequentially.
The TAU operation specifically includes: the currently obtained time lengths of the first timer T3324 and the second timer T3412 are notified to the core network through the TAU Request, the core network notifies the drive test terminal of the new time length configured for the first timer T3324 and the second timer T3412 through the TAU Accept, and the drive test terminal uses the new time length to work.
And if the drive test terminal actively sends uplink data, the drive test terminal exits from the PSM state and returns to the Connected state.
The following comments are made for the above english names:
DRX refers to Discontinuous Reception;
PSM refers to Power Saving Mode;
the TAU Request is a core network message;
TAU refers to Tracking Area Update.
The invention has the following advantages: the PSM state is introduced on the basis of the original Connected state and Idle state of the 230MHz frequency band private network wireless communication system, and the characteristic that measurement and reporting operations cannot be carried out during non-working period is utilized, so that the wireless communication system can automatically enter a deep sleep mode to achieve the effect of approaching shutdown, thereby reducing power consumption and prolonging the power supply time of a battery; the PSM state duration is adaptively adjusted by combining the current working activity level, so that the balance between the working time and the energy-saving time is achieved, the aim of saving electricity can be fulfilled without shutdown and startup operations of workers, and the method is suitable for the working characteristics of a drive test terminal.
Claims (7)
1. A method for reducing power consumption of a drive test terminal is characterized by comprising the following steps:
s1, judging whether scheduling information is not received in N1 continuous PDCCH periods by a drive test terminal in a Connected state, and if so, returning a resident subband by the drive test terminal;
s2, the drive test terminal of the resident sub-band judges whether the scheduling information is not received in N2 continuous PDCCH periods, if so, the drive test terminal enters an Idle state, DRX is carried out according to the configured DRX paging period, and a first timer T3324 and a second timer T3412 are started;
s3, if the first timer T3324 is overtime, entering a PSM state;
s4, if the second timer T3412 is overtime, the drive test terminal exits from the PSM state, initiates TAU operation and returns to the Connected state;
s5, adjusting the time interval in the Idle state and the time interval in the PSM state by monitoring the working activity monitoring window, wherein the working activity monitoring window only comprises a plurality of Connected state time period lengths, and the time period lengths in the Idle state and the PSM state are not included; the step S5 specifically includes:
s501, when a road test terminal is accessed into a network, a base station judges whether the type of the currently accessed terminal is a road test terminal, if so, the base station configures a window coefficient w for the currently accessed terminal when connection is established;
s502, the drive test terminal calculates the length W of a work activity monitoring window, wherein W = W is the PDCCH period;
s503, the drive test terminal periodically performs work statistics, if the period is up, the drive test terminal performs statistics on the sum M of the times of data detection and reporting under a Connected state of W time length before the current time, different times ranges respectively correspond to different work activity levels, the M is compared with a set work activity level threshold th, and the work activity level corresponding to the drive test terminal at the moment is determined;
s504, the drive test terminal initiates TAU operation, and adjusts the time interval of Idle state and the time interval in PSM state to the time interval corresponding to the work activity level;
the PDCCH period is a unit transmission time of the 230MHz band private network wireless communication system, and includes control information and data transmission time.
2. The method as claimed in claim 1, wherein when entering the PSM state, the drive test terminal turns off the transceiver, and keeps a state in which the terminal registers to the network, and meanwhile does not listen to any channel message, the signaling is unreachable, cannot receive downlink data, and does not need to re-attach or re-establish the PDN connection.
3. The method as claimed in claim 1, wherein the first timer T3324 is configured for a time period ranging from 2s to 186min, and the second timer T3412 is configured for a time period ranging from 54min to 310h.
4. The method as claimed in claim 1, wherein the threshold th of the level of operational activity comprises:
th1,th2,th3,th4,…,thn；
the time interval in the Idle state corresponds to the work activity level and comprises the following steps:
T0_0 ，T0_1， T0_2，T0_3，…, T0_( n-1)；
the time interval in the PSM state corresponding to the working activity level comprises:
T1_0 ，T1_1， T1_2，T1_3，…, T1_( n-1)；
the th1, th2, th3, th4, \ 8230, the thn is sequentially increased, the T0_0, T0_1, T0_2, T0_3, \ 8230, the T0_ (n-1) is sequentially decreased, and the T1_0, T1_1, T1_2, T1_3, \ 8230, the T1_ (n-1) is sequentially decreased.
5. The method of claim 4, wherein the TAU operation specifically comprises: the currently obtained time lengths of the first timer T3324 and the second timer T3412 are notified to the core network through the TAU Request, the core network notifies the drive test terminal of the new time length configured for the first timer T3324 and the second timer T3412 through the TAU Accept, and the drive test terminal uses the new time length to work.
6. A method as claimed in any one of claims 1 to 5, wherein if the drive test terminal is actively transmitting uplink data, the drive test terminal exits from the PSM state and returns to the Connected state.
7. The method as claimed in claim 1, wherein before comparing the value M with the set threshold th, the method further comprises: the current obtained M value and the value obtained in the last period
The absolute value of the difference in value is compared with a threshold value Mth if | M- </> is greater than>
|/>
Mth, comparing the M value with a set working activity level threshold th, otherwise not comparing the M value with the set working activity level threshold th, and the likeComparison of the level threshold th. />
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