CN108430098B - Wireless communication terminal and power saving method thereof - Google Patents

Wireless communication terminal and power saving method thereof Download PDF

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Publication number
CN108430098B
CN108430098B CN201711432868.9A CN201711432868A CN108430098B CN 108430098 B CN108430098 B CN 108430098B CN 201711432868 A CN201711432868 A CN 201711432868A CN 108430098 B CN108430098 B CN 108430098B
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wireless communication
power saving
time
communication module
saving mode
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CN108430098A (en
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陈洁
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Leadcore Technology Co Ltd
Datang Semiconductor Design Co Ltd
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Leadcore Technology Co Ltd
Datang Semiconductor Design Co Ltd
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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
    • 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
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • 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

Abstract

The invention provides a wireless communication terminal and a power saving method thereof. The wireless communication terminal comprises an application processing module and a wireless communication module, and the power saving method comprises the following steps: a. determining a first time length for which the wireless communication module can be in a power saving mode according to a second time when the wireless communication module enters an idle state, a first time when the wireless communication module sends next uplink data and a third time when the wireless communication module is awakened next time after entering the power saving mode; b. and determining whether the wireless communication module enters the power saving mode according to first energy consumption required by the wireless communication module to maintain the idle state in the first time length and second energy consumption required by the wireless communication module in the power saving mode and the awakening process in the first time length. The invention introduces the application information to pre-judge the power saving mode, and can ensure that the wireless communication terminal has good power saving effect.

Description

Wireless communication terminal and power saving method thereof
Technical Field
The present invention relates to wireless communication terminals, and more particularly, to a power saving method for a wireless communication terminal.
Background
Narrowband Band Internet of Things (NB-IoT) is one of many technologies of Low Power Wide Access (LPWA), which can support cellular data connection of Low Power devices in a Wide area network. Compared with the traditional mobile terminal, the NB-IoT terminal has high requirements on power consumption, and even puts a demand on 5Wh battery usage for 10 years. The 3GPP protocol also introduces characteristics such as Power Saving Mode (PSM) for the low Power consumption requirement of NB-IoT.
The PSM characteristics are defined in the 3GPP protocol as follows: under the condition that both the terminal and the network support the PSM, the terminal starts a timer after the connection is released and enters an IDLE (IDLE) state, the terminal enters the PSM state after the timer is overtime, the terminal does not monitor a downlink channel under the PSM state, and any uplink data or signaling can trigger the terminal to exit the PSM state. In the PSM state, the terminal protocol timer may be temporarily stopped.
Typical NB-IoT terminal application scenarios such as water meters and electricity meters report a small amount of data in a time unit of multiple days or even months, and the whole wireless communication module is in a PSM state at the rest of time. From the perspective of saving power consumption, when the terminal enters a protocol PSM state, the whole wireless communication module can enter a power saving mode, and only when the terminal needs to send uplink data or signaling, the terminal is triggered to wake up from the power saving mode.
The mobile communication terminal usually determines whether to enter the power saving mode according to information (such as whether to enter an idle state, a time delay of a last interrupt, etc.) of the wireless communication module, without considering application information. The power consumption of the wireless communication module of the terminal in the power saving mode is certainly less than that in the normal standby state, but the state recovery process (such as power-on, information storage recovery, original serving cell search, and the like) when the power saving mode is awakened usually brings about a large power consumption overhead. According to experience, the power consumption of the wireless communication module at the unit moment in the wake-up recovery process from the power saving mode is much larger than that of the wireless communication module in normal standby. Suppose that after the terminal enters the power saving mode, the user immediately initiates transmission of uplink Data (MO Data), and wakes up the terminal wireless communication module from the power saving mode, and power consumption overhead brought by the wake-up recovery process is reversed, so that the overall power consumption of the terminal is larger than that of the wireless communication module in the standby state.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a wireless communication terminal and a power saving method thereof, which introduces application information to pre-determine a power saving mode, and can enable the wireless communication terminal to have a good power saving effect.
In order to solve the above technical problem, the present invention provides a power saving method for a wireless communication terminal, where the wireless communication terminal includes an application processing module and a wireless communication module, the application processing module is adapted to set a first time for sending next uplink data to the wireless communication module, and the power saving method includes: a. determining a first time length of the wireless communication module which can be in a power saving mode according to a second time when the wireless communication module enters an idle state, the first time and a third time when the wireless communication module is awakened next time after entering the power saving mode; b. and determining whether the wireless communication module enters the power saving mode state or not according to first energy consumption required by the wireless communication module to maintain the idle state in the first time length and second energy consumption required by the wireless communication module in the power saving mode and the awakening process in the first time length.
In an embodiment of the present invention, the application processing module sets the first time for the wireless communication module by setting a time for first sending uplink data and a reporting period.
In an embodiment of the present invention, the application processing module sets the first time to the wireless communication module by indicating, in each uplink data packet, a time at which the next uplink data is transmitted.
In an embodiment of the present invention, in step a, the minimum time interval of the time interval between the first time and the second time and the time interval between the third time and the second time is taken as the first time length.
In an embodiment of the invention, if the second energy consumption is lower than the first energy consumption, the power saving mode is entered, and if the second energy consumption is greater than or equal to the first energy consumption, the idle state is maintained.
In an embodiment of the present invention, the power saving mode includes a plurality of power saving sub-modes, in step b, third energy consumptions required by the wireless communication module in each of the power saving sub-modes and the wake-up processes corresponding thereto within the first duration are respectively calculated, and a minimum third energy consumption is taken as the second energy consumption.
In an embodiment of the present invention, if the second energy consumption is lower than the first energy consumption, the power saving sub-mode corresponding to the second energy consumption is entered.
In an embodiment of the present invention, in step b, before calculating the third energy consumption each time, the first time length and the wake-up time length required by the wake-up process corresponding to the power saving sub-mode in the calculation are further compared, if the wake-up time length is less than the first time length, the third energy consumption is calculated, and if the wake-up time length is greater than or equal to the first time length, the next calculation of the third energy consumption is performed.
In an embodiment of the invention, the power saving method is performed after the wireless communication module enters an idle state.
In an embodiment of the present invention, the wireless communication terminal is a terminal supporting a power saving mode.
Another aspect of the present invention provides a wireless communication terminal, including: a wireless communication module adapted to wirelessly communicate with a base station; the application processing module is suitable for setting a first moment for sending next uplink data to the wireless communication module; the wireless communication module comprises a power saving mode control submodule, the power saving mode control submodule determines a first time length of the wireless communication module, which can be in a power saving mode, according to a second time when the wireless communication module enters an idle state, the first time and a third time when the wireless communication module is awakened next time after entering the power saving mode, and controls whether the wireless communication module enters the power saving mode or not according to first energy consumption required by the wireless communication module to maintain in the idle state in the first time length and second energy consumption required by the wireless communication module in the power saving mode and an awakening process in the first time length.
In an embodiment of the present invention, the application processing module sets the first time for the wireless communication module by setting a time for first sending uplink data and a reporting period.
In an embodiment of the present invention, the application processing module sets the first time to the wireless communication module by indicating, in each uplink data packet, a time at which the next uplink data is transmitted.
In an embodiment of the invention, the power saving mode control sub-module takes a minimum time interval of the time interval between the first time and the second time and the time interval between the third time and the second time as the first time duration.
In an embodiment of the invention, if the second energy consumption is lower than the first energy consumption, the power saving mode control sub-module controls the wireless communication module to enter the power saving mode, and if the second energy consumption is greater than or equal to the first energy consumption, the power saving mode control sub-module controls the wireless communication module to maintain the idle state.
In an embodiment of the invention, the power saving mode includes a plurality of power saving sub-modes, and the power saving mode control sub-module calculates third energy consumptions required by the wireless communication module in each of the power saving sub-modes and the wake-up processes corresponding thereto within the first duration, and takes the minimum third energy consumption as the second energy consumption.
In an embodiment of the invention, if the second energy consumption is lower than the first energy consumption, the power saving mode control sub-module controls the wireless communication module to enter the power saving sub-mode corresponding to the second energy consumption.
In an embodiment of the present invention, before calculating the third energy consumption each time, the power saving mode control sub-module further compares the first time length with a wakeup time length required by the wakeup process corresponding to the power saving mode in the calculation, calculates the third energy consumption if the wakeup time length is less than the first time length, and calculates the next third energy consumption if the wakeup time length is greater than or equal to the first time length.
In an embodiment of the invention, the power saving mode control sub-module performs an operation of determining whether the wireless communication module enters the power saving mode after the wireless communication module enters the idle state.
In an embodiment of the present invention, the wireless communication terminal is a terminal supporting a power saving mode.
Yet another aspect of the present invention provides a wireless communication terminal including: a memory; and a processor, wherein the memory comprises computer code stored thereon, the code being configured to cause the wireless communication terminal to perform at least the method as described above when run on the processor.
Yet another aspect of the invention provides a computer readable medium comprising computer code stored thereon, the computer code being configured to perform the method as described above when run on a processor.
Compared with the prior art, the invention has the following advantages:
according to the wireless communication terminal and the power saving method, the application information is introduced to judge whether to enter the power saving mode and which power saving sub-mode to enter, so that extra power consumption overhead caused by the awakening process of the power saving mode can be avoided as much as possible, and the overall power consumption of the wireless communication terminal is reduced.
Drawings
Fig. 1 is a basic block diagram of a wireless communication terminal according to an embodiment of the present invention.
Fig. 2 is a basic flowchart of a power saving method of a wireless communication terminal according to an embodiment of the present invention.
Fig. 3 is a schematic power consumption diagram of a wireless communication module according to an embodiment of the invention in different modes.
Fig. 4 is a flowchart illustrating a power saving method of a wireless communication terminal according to an embodiment of the invention.
Fig. 5 is a schematic power consumption diagram of a wireless communication module having multiple power saving sub-modes according to an embodiment of the invention.
Fig. 6 is a schematic structural diagram of a wireless communication terminal according to an embodiment of the present invention.
FIG. 7 is a schematic diagram of a computer-readable medium of an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments disclosed below.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.
Because the conventional wireless communication terminal completely adopts the information of the wireless communication module to judge the power saving mode, a scene that the wireless communication module is awakened by a user data sending request of the application processing module within a short time after entering the power saving mode may occur, so that the whole power consumption of the wireless communication terminal is larger than the normal standby power consumption. The present invention introduces application information to overcome the disadvantages, so as to be used as a basis for judging whether the wireless communication module enters the power saving mode. Specifically, when a wireless communication module of the wireless communication terminal enters a PSM state or an idle state defined by a protocol, application information needs to be acquired from an application side, power consumption benefit brought by a power saving mode and power consumption overhead brought by a power saving mode wake-up process are balanced, and whether to enter the power saving mode and which power saving sub-mode to select are determined.
Fig. 1 is a basic block diagram of a wireless communication terminal according to an embodiment of the present invention. Referring to fig. 1, a wireless communication terminal 100 may include a wireless communication module 110 and an application processing module 120. The wireless communication module 110 is mainly used for wireless communication with a remote base station. The application processing module 120 may be used for information collection processing and setting user data information to the wireless communication module 110. The wireless communication module 110 can obtain the time for sending the next uplink data at least according to the user data information. It is understood that the wireless communication module 110 and the application processing module 120 may be integrated on a System on Chip (SoC) or may be formed by separate chips or elements. In some embodiments, the wireless communication module 110 is further provided with a power saving mode control subsystem 111 for determining and controlling whether the wireless communication module 110 enters the power saving mode and determining which power saving mode to enter according to the user data information and the like. In some embodiments, the wireless communication terminal 100 may be a Power Saving Mode (PSM) enabled terminal, such as an NB-IoT terminal, in which the application processing module 120 may collect and process usage of water, electricity, gas, etc., for example.
For the embodiment that the wireless communication terminal 100 reports periodic data, the user data information set by the application processing module 120 to the wireless communication module 110 may include, for example, a time when the uplink data is first sent and a reporting period set at power-on. The wireless communication module 110 may calculate the time for sending the next uplink data according to the time for sending the uplink data for the first time and the reporting period.
For the embodiment in which the wireless communication terminal 100 is aperiodic data reporting, the user data information set by the application processing module 120 to the wireless communication module 110 may include uplink data packets, and indicate the time to send the next uplink data in each uplink data packet. In this way, the wireless communication module 110 can extract the time for transmitting the next uplink data from each currently transmitted uplink data packet.
Fig. 2 is a basic flowchart of a power saving method of a wireless communication terminal according to an embodiment of the present invention. Referring to fig. 2, the power saving method 200 may include:
step 210: determining the time length of the wireless communication module which can be in the power saving mode according to the time when the wireless communication module enters the idle state, the time when the wireless communication module sends the next uplink data and the time when the wireless communication module is awakened next time after entering the power saving mode;
step 220: and determining whether the wireless communication module enters the power saving mode according to the energy consumption required by the wireless communication module to maintain in the idle state in the time length in which the wireless communication module can be in the power saving mode and the energy consumption required by the wireless communication module in the power saving mode and the awakening process in the time length in which the wireless communication module can be in the power saving mode.
In an embodiment, the power saving method 200 may be performed in the wireless communication device 100 shown in fig. 1. More specifically, it may be executed in the power saving mode control sub-module 111 in the wireless communication apparatus 100.
In some embodiments, the power saving method 200 may be performed after the wireless communication module enters an idle state.
In step 210, the minimum time interval between the time when the next uplink data is sent and the time when the wireless communication module enters the idle state and the time when the wireless communication module is awakened next time after entering the power saving mode and the time when the wireless communication module enters the idle state may be taken as the time length during which the wireless communication module can be in the power saving mode. More specifically, assuming that the time when the wireless communication module enters the idle state is T1, the time when the wireless communication module transmits the next uplink data is Ta, and the time when the wireless communication module wakes up next time after entering the power saving mode is Tb, the time interval Ta1 between the time Ta when the next uplink data is transmitted and the time T1 when the wireless communication module enters the idle state can be obtained as Ta-T1, the time interval Tb1 between the time Tb when the wireless communication module wakes up next time after entering the power saving mode and the time T1 when the wireless communication module enters the idle state can be obtained as Tb-T1, and the time length Δ T when the wireless communication module can be in the power saving mode can be obtained as min (Ta1, Tb1), where min represents the minimum value.
In step 220, if the energy consumption of the wireless communication module in the power saving mode and the wake-up process is lower than the energy consumption of the wireless communication module in the idle state during the time period that the wireless communication module can be in the power saving mode, the wireless communication module enters the power saving mode; if the energy consumption of the wireless communication module in the power saving mode and the awakening process is greater than or equal to the energy consumption of the wireless communication module in the idle state in the time period in which the wireless communication module can be in the power saving mode, the wireless communication module is enabled to maintain the idle state.
Fig. 3 is a schematic power consumption diagram of a wireless communication module according to an embodiment of the invention in different modes. Referring to fig. 3, the wireless communication module enters an idle state at a time T1, and needs to transmit uplink data or be fully woken up at a time T2, where T2 is T1+ Δ T, and Δ T is a time period during which the wireless communication module can be in the power saving mode, which is determined in step 210.
Setting the power consumption of the wireless communication module in an idle state as P0Then the energy consumption E required for the wireless communication module to remain in the idle state for the duration that the wireless communication module can be in the power saving mode can be determined0＝(T2-T1)*P0＝ΔT*P0Corresponding to the region in fig. 3 where diagonal lines are drawn between T1 and T2.
Let the power consumption of the wireless communication module in the power saving mode be PsThe power consumption required in the wake-up process is PwThe time required for the wake-up process is DeltaTw. The wireless communication module can be calculated to be required to be awakened at the time Tw, which is T2-delta Tw. The energy consumption E required by the wireless communication module in the power saving mode and the awakening process in the time length that the wireless communication module can be in the power saving mode can be obtaineds＝(Tw-T1)*Ps+(T2-Tw)*Pw＝(ΔT-ΔTw)*Ps+ΔTw*PwCorresponding to the region between the dots drawn between T1 and T2 in fig. 3.
Generally, the power consumption P of the wireless communication module in the power saving modesLess than its power consumption P in idle state0. The wireless communication module is awakened from the power saving mode, and a state recovery operation (such as power-on, information storage recovery, original serving cell search, and the like) is required in the awakening process, so that the power consumption in the awakening process is high, and the power consumption P in the awakening process is high generallywWill be greater than the power consumption P in the idle state0. That is, the power saving mode power consumption P of the wireless communication modulesIdle state power consumption P0And power consumption P during wake-upwThe following relationship exists among the three components: pw>P0>Ps. Thus, E0And EsThe magnitude relation of (D) to Δ T, Δ Tw、Pw、P0And PsAre all related, there is no constant magnitude relationship. If E iss<E0Then, it means that the wireless communication module enters the power saving mode to bring power consumption benefit, and at this time, the wireless communication module can enter the power saving mode. If E iss>E0It means that the wireless communication module enters the power saving mode to bring extra power consumption overhead, and at this time, the wireless communication module can be maintained in the idle state.
Note that, in the embodiment P shown in FIG. 3w、P0And PsThe average value may be obtained through a plurality of experiments, or may be an actually measured value when the wireless communication module is in the state last time, or may be an estimated value.
In an embodiment, the power saving mode of the wireless communication module may include a plurality of power saving sub-modes, and in step 220, the energy consumptions required by the wireless communication module in the power saving electronic modes and the wake-up processes corresponding thereto during the time period in which the wireless communication module can be in the power saving mode may be respectively calculated, and the minimum energy consumption is taken as the energy consumption required by the wireless communication module in the power saving mode and the wake-up processes during the time period in which the wireless communication module can be in the power saving mode. In addition, if the energy consumption of the wireless communication module in the power saving mode and the wake-up process is lower than the energy consumption required for maintaining the wireless communication module in the idle state in the time period in which the wireless communication module can be in the power saving mode, the wireless communication module enters the power saving sub-mode corresponding to the minimum energy consumption. In a more specific embodiment, before calculating the energy consumption required by the wireless communication module in a power saving sub-mode and the wake-up procedure corresponding thereto each time the wireless communication module is in the power saving mode, the time length that the wireless communication module is in the power saving mode and the wake-up time required by the wake-up procedure corresponding to the power saving sub-mode in the calculation may be compared, and if the wake-up time length is less than the time length that the wireless communication module is in the power saving mode, calculating the energy consumption of the wireless communication module in the power saving sub-mode and the corresponding wake-up process within the time length of the wireless communication module in the power saving mode, if the wake-up time length is longer than or equal to the time length of the wireless communication module in the power saving mode, then, the energy consumption of the wireless communication module in the next power saving sub-mode and the corresponding wake-up process is calculated within the time length that the wireless communication module can be in the power saving mode.
Fig. 4 is a flowchart illustrating a power saving method of a wireless communication terminal according to an embodiment of the invention. Referring to fig. 4, the power saving method 300 may include:
step 301: at time T1, the wireless communication module enters an idle state.
Step 302: and acquiring the time Ta for sending the next uplink data set by the user and the time Tb for awakening the wireless communication module next time after the wireless communication module enters the power saving mode.
Step 303: and calculating the time length for which the wireless communication module can be in the power saving mode. Specifically, the time interval Ta1 between the time Ta of transmitting the next uplink data and the time T1 of the wireless communication module entering the idle state may be obtained as Ta-T1, the time interval Tb1 between the time Tb when the wireless communication module is woken up next time after entering the power saving mode and the time T1 when the wireless communication module enters the idle state may be obtained as Tb-T1, and finally the time duration Δ T that the wireless communication module may be in the power saving mode may be obtained as min (Ta1, Tb1), where min represents the minimum value.
Step 304: calculating the energy consumption E required by a wireless communication module to maintain an idle state for a duration in which the wireless communication module can be in a power saving mode0. Specifically, let the power consumption of the wireless communication module in the idle state be P0Can find E0＝ΔT*P0I.e., the region between T1 and T2 in fig. 5.
Step 305: setting the initial values of variables E, i and j, i.e., E-E0、i＝1、j＝0。
Step 306: and judging whether i is smaller than N +1, if so, executing step 307, and if not, executing step 312. Wherein, N represents the number of power saving sub-modes included in the power saving mode.
Step 307: judging the awakening time delta T of the power-saving sub-mode iiIf the time duration is less than the time duration Δ T for which the wireless communication module can be in the power saving mode, if yes, step 308 is executed, and if not, step 311 is executed. Wherein, Delta TiThe time length required for the wireless communication module to wake up from the power saving sub-mode i to work normally is shown.
Step 308: calculating the energy consumption E of the power saving sub-mode i in the time length Delta T of the wireless communication module which can be in the power saving modei. Specifically, let the power consumption of the wireless communication module in the power saving mode be Pi psmThe power consumption required in the wake-up process is Pi idleThen E isi＝(ΔT-ΔTi)*Pi psm+ΔTi*Pi idleCorresponding to the region between the dots drawn between T1 and T2 in fig. 5.
Step 309: judgment EiIf the value is less than E, if yes, go to step 310, otherwise go to step 311.
Step 310: assigning the value of i to j, and EiThe value is given to E, i.e. j-i, E-Ei。
Step 311: i is self-incremented by 1, i + +, i.e., i ═ i +1, and back to step 306.
Step 312: and judging whether j is greater than 0, if so, executing the step 313, and if not, ending the operation.
Step 313: the wireless communication module is caused to enter a power saving mode j.
Fig. 6 is a wireless communication terminal according to an embodiment of the present invention. Referring to fig. 6, the wireless communication terminal 400 includes a memory 410 and a processor 420. The memory 410 has stored thereon computer code that, when run on the processor 420, is configured to cause the wireless communication terminal 400 to perform at least the power saving method as described above.
FIG. 7 is a computer-readable medium of an embodiment of the invention. The computer readable medium 500 has stored thereon computer code which, when run on a processor, is configured to perform the power saving method as described above.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The various illustrative logical modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk (disk) and disc (disc), as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks (disks) usually reproduce data magnetically, while discs (discs) reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
Although the present invention has been described with reference to the present specific embodiments, it will be appreciated by those skilled in the art that the above embodiments are merely illustrative of the present invention, and various equivalent changes and substitutions may be made without departing from the spirit of the invention, and therefore, it is intended that all changes and modifications to the above embodiments within the spirit and scope of the present invention be covered by the appended claims.

Claims (18)

1. A power saving method of a wireless communication terminal, the wireless communication terminal comprising an application processing module and a wireless communication module, the application processing module being adapted to set a first time for transmitting next uplink data to the wireless communication module, the power saving method comprising:
a. determining a first time length for which the wireless communication module can be in a power saving mode according to a second time when the wireless communication module enters an idle state, the first time and a third time when the wireless communication module is awakened next time after entering the power saving mode;
b. determining whether the wireless communication module enters the power saving mode according to first energy consumption required by the wireless communication module to maintain the idle state in the first time length and second energy consumption required by the wireless communication module in the power saving mode and a wake-up process in the first time length;
in the step a, the minimum time interval of the time interval between the first time and the second time and the time interval between the third time and the second time is taken as the first duration; in step b, if the second energy consumption is lower than the first energy consumption, entering the power saving mode, and if the second energy consumption is greater than or equal to the first energy consumption, maintaining the idle state.
2. The power saving method as claimed in claim 1, wherein the application processing module sets the first time to the wireless communication module by setting a time at which uplink data is first transmitted and a reporting period.
3. The power saving method according to claim 1, wherein the application processing module sets the first time to the wireless communication module by indicating a time to transmit next uplink data in each uplink data packet.
4. The power saving method according to claim 1, wherein the power saving mode includes a plurality of power saving sub-modes, and in step b, third energy consumptions required by the wireless communication module in each power saving sub-mode and the corresponding wake-up process in the first duration are calculated respectively, and the smallest third energy consumption is taken as the second energy consumption.
5. The power saving method according to claim 4, wherein if the second energy consumption is lower than the first energy consumption, the power saving sub-mode corresponding to the second energy consumption is entered.
6. The power saving method according to claim 4, wherein in step b, before calculating the third energy consumption each time, the first time duration and the wake-up time duration required by the wake-up process corresponding to the power saving sub-mode in the calculation are further compared, if the wake-up time duration is less than the first time duration, the third energy consumption is calculated, and if the wake-up time duration is greater than or equal to the first time duration, the next calculation of the third energy consumption is performed.
7. The power saving method according to any one of claims 1 to 6, wherein the power saving method is performed after the wireless communication module enters an idle state.
8. The power saving method according to any one of claims 1 to 6, wherein the wireless communication terminal is a terminal supporting a power saving mode.
9. A wireless communication terminal, comprising:
a wireless communication module adapted to wirelessly communicate with a base station; and
the application processing module is suitable for setting a first moment for sending next uplink data to the wireless communication module;
wherein the wireless communication module comprises a power saving mode control sub-module, the power saving mode control sub-module determines a first time length of the wireless communication module, which can be in a power saving mode, according to a second time when the wireless communication module enters an idle state, the first time and a third time when the wireless communication module is woken up next time after entering the power saving mode, the power saving mode control sub-module takes a minimum time interval of a time interval between the first time and the second time and a time interval between the third time and the second time as the first time length, and controls whether the wireless communication module enters the power saving mode according to a first energy consumption required by the wireless communication module to maintain the idle state in the first time length and a second energy consumption required by the wireless communication module in the power saving mode and a waking process in the first time length, if the second energy consumption is lower than the first energy consumption, the power saving mode control sub-module controls the wireless communication module to enter the power saving mode, and if the second energy consumption is greater than or equal to the first energy consumption, the power saving mode control sub-module controls the wireless communication module to maintain the idle state.
10. The wireless communication terminal of claim 9, wherein the application processing module sets the first time for the wireless communication module by setting a time for first sending uplink data and a reporting period.
11. The wireless communication terminal according to claim 9, wherein the application processing module sets the first time to the wireless communication module by indicating a time to transmit next uplink data in each uplink data packet.
12. The wireless communication terminal according to claim 9, wherein the power saving mode includes a plurality of power saving sub-modes, and the power saving mode control sub-module calculates third energy consumptions required by the wireless communication module in each power saving sub-mode and the wake-up procedure corresponding thereto in the first duration, and takes the smallest third energy consumption as the second energy consumption.
13. The wireless communication terminal of claim 12, wherein if the second energy consumption is lower than the first energy consumption, the power saving mode control sub-module controls the wireless communication module to enter the power saving sub-mode corresponding to the second energy consumption.
14. The wireless communication terminal according to claim 12, wherein before calculating the third energy consumption each time, the power saving mode control sub-module further compares the first time length with a wakeup time length required for the wakeup process corresponding to the power saving mode in the calculation, calculates the third energy consumption if the wakeup time length is shorter than the first time length, and calculates the next third energy consumption if the wakeup time length is longer than or equal to the first time length.
15. The wireless communication terminal according to any of claims 9 to 14, wherein the power saving mode control sub-module is configured to determine whether the wireless communication module enters the power saving mode after the wireless communication module enters an idle state.
16. The wireless communication terminal according to any of claims 9 to 14, wherein the wireless communication terminal is a terminal supporting a power saving mode.
17. A wireless communication terminal, comprising:
a memory; and
a processor, wherein the memory comprises computer code stored thereon, the code being configured to cause the wireless communication terminal to perform at least the method of any of claims 1 to 8 when run on the processor.
18. A computer readable medium comprising computer code stored thereon, the computer code configured to perform the method of any of claims 1 to 8 when run on a processor.
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