CN110891302B - Energy-saving method and device for terminal - Google Patents

Energy-saving method and device for terminal Download PDF

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Publication number
CN110891302B
CN110891302B CN201811057641.5A CN201811057641A CN110891302B CN 110891302 B CN110891302 B CN 110891302B CN 201811057641 A CN201811057641 A CN 201811057641A CN 110891302 B CN110891302 B CN 110891302B
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terminal
information
energy
time
saving
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CN110891302A (en
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胡小群
程蕾
董旭晖
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201811057641.5A priority Critical patent/CN110891302B/en
Priority to PCT/CN2019/104181 priority patent/WO2020052473A1/en
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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
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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 application provides a terminal energy saving method and device. The method comprises the following steps: the terminal sends energy-saving requirement information to access network equipment, wherein the energy-saving requirement information comprises information of time-frequency resources required by the terminal. And the terminal receives an energy-saving instruction from the access network equipment, wherein the energy-saving instruction is used for instructing energy saving according to the energy-saving demand information. And the terminal saves energy according to the energy saving demand information. Based on the scheme, the energy-saving indication sent to the terminal by the access network equipment is used for indicating energy saving according to the energy-saving requirement information sent by the terminal, so that the energy-saving mode meets the requirements of the terminal, the normal service of the terminal cannot be influenced, and the energy-saving effect is improved.

Description

Energy-saving method and device for terminal
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for saving energy of a terminal.
Background
In a 5th generation (5G) mobile network, a cell bandwidth is large, a subcarrier interval is short, and compared with a Long Term Evolution (LTE) network, a terminal needs to consume more electric power for blind detection of a Physical Downlink Control Channel (PDCCH) Channel and data reception.
In the prior art, a base station generally configures Discontinuous Reception (DRX) related parameters to a terminal, and then the terminal stops monitoring paging, broadcast and other messages of the base station in a corresponding time period according to the DRX configuration, thereby implementing energy saving of the terminal.
The main problems of the method are that: the terminal saves energy in the time period specified by the base station, and the normal service of the terminal can be influenced.
Disclosure of Invention
The application provides an energy-saving method and device for a terminal, which are used for realizing effective energy saving of the terminal under the condition of not influencing terminal services.
In a first aspect, the present application provides a method for saving power of a terminal, including: the terminal sends energy-saving requirement information to access network equipment, wherein the energy-saving requirement information comprises information of time-frequency resources required by the terminal. And the terminal receives an energy-saving instruction from the access network equipment, wherein the energy-saving instruction is used for instructing energy saving according to the energy-saving demand information. And the terminal saves energy according to the energy saving demand information. Based on the scheme, the energy-saving indication sent to the terminal by the access network equipment is used for indicating energy saving according to the energy-saving requirement information sent by the terminal, so that the energy-saving mode meets the requirements of the terminal, the normal service of the terminal cannot be influenced, and the energy-saving effect is improved.
In a possible implementation manner, the terminal determines a downlink scheduling timing sequence of the terminal, and the information of the time-frequency resource required by the terminal includes the downlink scheduling timing sequence of the terminal, where the downlink scheduling timing sequence of the terminal refers to the number of time slots from the time slot in which the PDCCH scheduling information is located to the time slot in which the data scheduled by the scheduling information is located. Based on the scheme, the terminal determines the downlink scheduling time sequence of the terminal, and sends the downlink scheduling time sequence of the terminal to the access network equipment as scheduling requirement information, and then the access network equipment can configure the downlink scheduling time sequence to the terminal, so that the terminal can start a receiver to receive data at the time point specified by the downlink scheduling time sequence, and the terminal can save energy and electric quantity.
In a possible implementation manner, before the terminal determines the downlink scheduling timing sequence of the terminal, the method further includes: the terminal determines that the terminal does not have the low-delay service at present, and/or the terminal determines that the current electric quantity of the terminal is smaller than a first electric quantity threshold value. That is, when the terminal determines that there is no low-delay service currently and/or determines that the current electric quantity of the terminal is smaller than the first electric quantity threshold, the downlink scheduling time sequence of the terminal is determined, and the downlink scheduling time sequence of the terminal is sent to the access network device as information of time-frequency resources required by the terminal.
In a possible implementation manner, after determining a downlink scheduling time sequence of a terminal, if it is determined that the current electric quantity of the terminal is smaller than a second electric quantity threshold, the terminal increases the downlink scheduling time sequence of the terminal by a first step according to the current electric quantity of the terminal to obtain an updated downlink scheduling time sequence, and then sends the updated downlink scheduling time sequence of the terminal to an access network device as information of time-frequency resources required by the terminal. That is, the downlink scheduling timing sequence sent by the terminal to the access network device can be adjusted according to the current power of the terminal.
In yet another possible implementation, the terminal determines a bandwidth required by the terminal; wherein the energy saving requirement information includes a bandwidth required by the terminal.
In another possible implementation manner, when the terminal determines that a difference between the bandwidth actually allocated by the terminal and the bandwidth required by the terminal is greater than a bandwidth difference threshold, the information of the time-frequency resource required by the terminal includes the bandwidth required by the terminal. Based on the scheme, when the difference between the bandwidth actually allocated by the terminal at present and the bandwidth required by the terminal is large, for example, larger than the bandwidth difference threshold, the terminal may request the access network device to reduce the bandwidth, so that the bandwidth required by the terminal is sent to the access network device as the information of the time-frequency resource required by the terminal, and the access network device configures the bandwidth value required by the terminal for the terminal.
In a possible implementation manner, after determining the bandwidth required by the terminal, if it is determined that the current electric quantity of the terminal is smaller than the third electric quantity threshold, the terminal reduces the bandwidth required by the terminal by a second step length to obtain the updated bandwidth required by the terminal, and then sends the updated bandwidth required by the terminal to the access network device as information of time-frequency resources required by the terminal. That is, the bandwidth required by the terminal sent to the access network device by the terminal can be adjusted according to the current power of the terminal.
In another possible implementation manner, the terminal determines the number of uplink symbols required by the terminal; the information of the time-frequency resource required by the terminal comprises the number of uplink symbols required by the terminal.
In another possible implementation manner, when the terminal determines that the difference between the number of uplink symbols actually allocated by the terminal and the number of uplink symbols required by the terminal is greater than the symbol number difference threshold, the information of the time-frequency resource required by the terminal includes the number of uplink symbols required by the terminal. Based on the scheme, when the difference between the number of uplink symbols actually allocated by the terminal currently and the number of uplink symbols required by the terminal is large, for example, larger than the symbol number difference threshold, the terminal can request the access network device to reduce the number of uplink symbols, so that the number of uplink symbols required by the terminal is sent to the access network device as information of time-frequency resources required by the terminal, and the access network device configures the number of uplink symbols required by the terminal for the terminal.
In a possible implementation manner, after determining the number of uplink symbols required by the terminal, if it is determined that the current electric quantity of the terminal is smaller than the fourth electric quantity threshold, the terminal decreases the number of uplink symbols required by the terminal by the third step length to obtain an updated number of uplink symbols required by the terminal, and then sends the updated number of uplink symbols required by the terminal to the access network device as information of time-frequency resources required by the terminal. That is, the number of uplink symbols required by the terminal, which is sent to the access network device by the terminal, can be adjusted according to the current electric quantity of the terminal.
In a possible implementation manner, the information of the time-frequency resource required by the terminal in any of the embodiments includes at least one of a downlink scheduling timing of the terminal, a bandwidth required by the terminal, or an uplink symbol number required by the terminal. The terminal saves energy according to the energy-saving indication, and the method comprises the following steps: the terminal configures according to at least one of a downlink scheduling time sequence of the terminal, a bandwidth required by the terminal or an uplink symbol number required by the terminal.
In a possible implementation manner, the energy saving indication in any of the above embodiments may be a Radio Resource Control (RRC) reconfiguration message.
In a second aspect, the present application provides a method for saving power of a terminal, including: the access network equipment receives energy-saving requirement information from the terminal, wherein the energy-saving requirement information comprises information of time-frequency resources required by the terminal. And the access network equipment sends an energy-saving instruction to the terminal, wherein the energy-saving instruction is used for indicating energy saving according to the energy-saving requirement information. Based on the scheme, the energy-saving indication sent to the terminal by the access network equipment indicates that energy is saved according to the energy-saving demand information sent by the terminal, so that the energy-saving mode meets the requirements of the terminal, the normal service of the terminal cannot be influenced, and the energy-saving effect is improved.
In a possible implementation manner, the information of the time-frequency resource required by the terminal includes at least one of the following information: the downlink scheduling time sequence of the terminal refers to the number of time slots from the time slot of the PDCCH scheduling information to the time slot of the downlink data scheduled by the scheduling information.
In a possible implementation manner, the power saving indication in any of the above embodiments may be an RRC reconfiguration message.
In a third aspect, the present application provides a communication apparatus, where the communication apparatus has a function of implementing a terminal or an access network device in the foregoing method embodiment. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.
In one possible design, the communication device includes: a processor, a memory, a bus, and a communication interface; the memory stores computer-executable instructions, the processor is connected with the memory through the bus, and when the communication device runs, the processor executes the computer-executable instructions stored in the memory, so that the communication device executes the energy saving method of the terminal according to any one of the implementations of the first aspect to the second aspect or the first aspect to the second aspect. For example, the communication device may be a terminal, an access network device, or the like.
In another possible design, the communication apparatus may also be a chip, such as a chip of a terminal or a chip in an access network device, where the chip includes a processing unit and optionally a storage unit, and the chip may be configured to perform the power saving method for a terminal in any implementation manner of the first aspect to the second aspect or any implementation manner of the first aspect to the second aspect.
In a fourth aspect, the present application provides a computer storage medium storing computer software instructions for use by the terminal or access network device described above, including a program designed to perform any of the aspects described above.
In a fifth aspect, the present application provides a computer program product. The computer program product comprises computer software instructions which are loadable by a processor for implementing the procedures in the power saving method of the terminal of any of the above-mentioned aspects.
In a sixth aspect, the present application provides a system, where the system includes the terminal in the first aspect or any implementation manner of the first aspect, and an access network device in the first aspect or any implementation manner of the first aspect.
These and other aspects of the invention are apparent from and will be elucidated with reference to the embodiments described hereinafter.
Drawings
FIG. 1 is a schematic diagram of a possible network architecture provided herein;
fig. 2 is a schematic flowchart of an energy saving method of a terminal according to the present application;
FIG. 3 is a schematic view of an apparatus provided herein;
fig. 4 is a schematic diagram of a terminal provided in the present application;
fig. 5 is a schematic diagram of an access network device according to the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. The particular methods of operation in the method embodiments may also be applied to apparatus embodiments or system embodiments. In the description of the present application, the term "plurality" means two or more unless otherwise specified.
The architecture and the service scenario described in this application are for more clearly illustrating the technical solution of this application, and do not constitute a limitation to the technical solution provided in this application, and it can be known by those skilled in the art that the technical solution provided in this application is also applicable to similar technical problems along with the evolution of network architecture and the appearance of new service scenario.
As shown in fig. 1, which is a schematic diagram of a possible network architecture to which the present application is applied, the terminal 10 communicates with an access network device 20 through a wireless interface, and only one access network device and one terminal are shown for clarity.
The terminal is a device with a wireless transceiving function, and can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and may further include a User Equipment (UE), and the like.
An access network device, which may also be referred to as a Radio Access Network (RAN) device, is a device that provides a terminal with a wireless communication function. Access network equipment includes, for example but not limited to: next generation base station (G node B, gNB), evolved node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (e.g., home evolved node B, or home node B, HNB), Base Band Unit (BBU), transmission point (TRP), Transmission Point (TP), mobile switching center, etc. in 5G.
In a cell, an access network device and a terminal may perform data transmission through air interface resources. The air interface resources may include time domain resources and frequency domain resources, which may also be referred to as time frequency resources. The frequency domain resources may be located in a set frequency range, which may also be referred to as a band (band) or a frequency band, and the width of the frequency domain resources may be referred to as a Bandwidth (BW).
Based on the system architecture shown in fig. 1, the present application provides an energy saving method for a terminal. As shown in fig. 2, the present application provides a method for saving power for a terminal. The method comprises the following steps:
step 201, the terminal sends energy saving requirement information to the access network device. Accordingly, the access network device may receive the energy saving requirement information.
The energy-saving requirement information includes information of time-frequency resources required by the terminal. The information of the time-frequency resource required by the terminal may include at least one of a downlink scheduling timing sequence of the terminal, a bandwidth required by the terminal, or an uplink symbol number required by the terminal.
In one implementation, the terminal may determine a downlink scheduling timing of the terminal, where the downlink scheduling timing refers to a number of time slots from a time slot in which the PDCCH scheduling information is located to a time slot in which downlink data scheduled by the scheduling information is located. And then, the downlink scheduling time sequence is used as information of time-frequency resources required by the terminal and sent to the access network equipment, namely the downlink scheduling time sequence is used as energy-saving requirement information of the terminal and sent to the access network equipment.
As an implementation manner, if the terminal determines that there is no Low-delay service (e.g., Ultra Reliable and Low Latency Communication (urrllc) service) currently, the terminal determines a downlink scheduling timing sequence of the terminal, and sends the downlink scheduling timing sequence to the access network device as information of a time-frequency resource required by the terminal. As another implementation manner, if it is determined that the current electric quantity of the terminal is smaller than the first electric quantity threshold, the terminal determines a downlink scheduling time sequence of the terminal, and sends the downlink scheduling time sequence to the access network device as information of a time-frequency resource required by the terminal. As another implementation manner, if it is determined that the terminal does not have the low-latency service currently and that the current power of the terminal is smaller than the first power threshold, the terminal determines a downlink scheduling time sequence of the terminal, and sends the downlink scheduling time sequence to the access network device as information of a time-frequency resource required by the terminal. The terminal may determine whether a low latency Service exists currently by determining a Quality of Service (QoS) Class Identifier (QCI) of a current Service.
In 5G communication, the value K0 may be used to indicate the downlink scheduling timing of the terminal, for example, the terminal may calculate the downlink scheduling timing according to its own requirement. As an example, one way to calculate the value of K0 is given below: k0 ═ ceil ((t1+ t2)/symbol), where the ceil () function represents rounding up, t1 represents the processing time for the terminal to resolve the blind PDCCH, t2 represents the time required for the process of turning on the receiver, e.g., t2 is the time required from the start of turning on the receiver to the completion of turning on the receiver, and symbol represents the number of symbols in one subframe (e.g., may be 14). In general, the larger the value of K0, the higher the service processing delay of the terminal; conversely, the smaller the value of K0, the lower the traffic processing delay of the terminal. Therefore, when the terminal has low latency traffic, K0 may not be turned on, i.e., K0 is set to 0, and when the terminal determines that there is no low latency traffic currently, K0 may be turned on, e.g., the calculated K0 may be 1, or 2, or 3, etc.
Based on the scheme, the terminal determines a Downlink scheduling time sequence of the terminal, and sends the Downlink scheduling time sequence of the terminal to the access network equipment as information of time-frequency resources required by the terminal in the scheduling requirement information, and then the access network equipment can configure the Downlink scheduling time sequence to the terminal, so that the terminal can start a receiver to receive data at a time point specified by the Downlink scheduling time sequence, the terminal can save energy and power, and power consumption caused by the fact that the terminal needs to start the receiver all the time and receive Physical Downlink Shared CHannel (PDSCH) data through the receiver after receiving PDCCH scheduling information can be avoided.
Further, after determining the downlink scheduling time sequence of the terminal, if it is determined that the current electric quantity of the terminal is smaller than the second electric quantity threshold, the terminal may further increase the downlink scheduling time sequence of the terminal by a first step length according to the current electric quantity of the terminal to obtain an updated downlink scheduling time sequence, and then send the updated downlink scheduling time sequence of the terminal to the access network device as the energy saving requirement information. That is, the downlink scheduling timing sequence sent by the terminal to the access network device can be adjusted according to the current power of the terminal.
For example, as an implementation manner, the [0, second electric quantity threshold ] may be divided into N segments, where N is a preset integer greater than N, and the first step length corresponding to each segment is different. The following description is made with reference to specific examples. For example, if the second electric quantity threshold is 30% and N is preset to 3, the following may be divided:
a first stage: (0, 10% ], corresponding to a first step size of 3.
And a second stage: (10%, 20% ], corresponding to a first step size of 2.
A third stage: (20%, 30%) corresponding to a first step size of 1.
For example, if the current electric quantity of the terminal is 25% and belongs to the third section, the first step size is 1, and thus the calculated downlink scheduling time sequence is increased by 1. For another example, if the current power of the terminal is 15% and belongs to the second segment, the first step length is 2, so that the calculated downlink scheduling timing sequence is increased by 2, and so on.
It should be noted that the above is only an example, and other ways of setting the first step size may be used in practical applications, and the present application is not limited thereto.
Generally, the lower the current electric quantity value is, the more energy saving is needed, so the calculated K0 value is properly increased to increase the time delay, thereby achieving the purpose of saving energy. Therefore, in this scheme, if the value K0 is updated, the updated value K0 may be sent to the access network device as the energy saving requirement information.
In yet another possible implementation manner, the terminal may determine a bandwidth required by the terminal, and send the bandwidth required by the terminal to the access network device as the energy saving requirement information.
In another possible implementation manner, when the terminal determines that a difference between a bandwidth actually allocated by the terminal and a bandwidth required by the terminal is greater than a bandwidth difference threshold, the information of the time-frequency resource required by the terminal includes the bandwidth required by the terminal, and the bandwidth required by the terminal is sent to the access network device as energy saving requirement information. The bandwidth difference threshold may be configured according to the energy saving requirement of the terminal, for example, the smaller the current electric quantity of the terminal is, the smaller the bandwidth difference threshold may be configured, and conversely, the larger the current electric quantity of the terminal is, the larger the bandwidth difference threshold may be configured.
For example, the bandwidth difference threshold is 30RB, the bandwidth actually allocated by the terminal is 200RB, and the bandwidth actually required by the terminal is 50RB, and since the difference between the bandwidth actually allocated by the terminal (200RB) and the bandwidth required by the terminal (50RB) is 150RB, which is greater than the bandwidth difference threshold 30RB, the terminal determines that the bandwidth of the terminal needs to be reduced, so as to achieve the energy saving purpose. Therefore, the terminal sends the calculated bandwidth required by the terminal to the access network equipment as the energy-saving requirement information. The meaning that the difference between the bandwidth actually allocated by the terminal and the bandwidth required by the terminal is greater than the bandwidth difference threshold is as follows: the bandwidth actually allocated by the terminal is excessively large, and the terminal does not need to use so much bandwidth, and thus the bandwidth can be reduced appropriately.
As an example, a way of calculating the bandwidth required by the terminal is given below. The bandwidth required by the terminal is (beta average data amount)/(k R Qm v). Where, beta is a coefficient used to adjust the number of Resource Blocks (RBs) calculated, an average data volume (also referred to as an average traffic volume) is obtained by counting the amount of terminal data for a period of time, k is the number of effective Resource Elements (REs) of an RB in a slot, for example, k may be equal to 156, that is, 12 × 13 ═ 156(12 is the number of REs in each symbol, 13 is the number of effective symbols in each slot), R is a code rate, Qm is a Modulation order, and v is an average Rank number, where R and Qm may be obtained by looking up a table according to a statistical average Modulation and Coding Scheme (MCS). For example, one or more MCSs in the scheduling information scheduled in a period of time may be obtained, an average MCS is calculated according to the obtained one or more MCSs, and then a table is looked up to obtain R and Qm corresponding to the average MCS. It should be noted that, in a specific implementation, the uplink bandwidth required by the terminal may be calculated, the downlink bandwidth required by the terminal may also be calculated, or the uplink bandwidth and the downlink bandwidth required by the terminal may also be calculated.
Based on the scheme, when the difference between the bandwidth actually allocated by the terminal at present and the bandwidth required by the terminal is large, for example, larger than the bandwidth difference threshold, the terminal may request the access network device to reduce the bandwidth, so that the bandwidth required by the terminal is sent to the access network device as the energy saving requirement information, so that the access network device configures the bandwidth value required by the terminal for the terminal.
Further, after the terminal determines the bandwidth required by the terminal, if it is determined that the current electric quantity of the terminal is smaller than the third electric quantity threshold, the bandwidth required by the terminal can be reduced by the second step according to the current electric quantity of the terminal to obtain the updated bandwidth required by the terminal, and then the updated bandwidth required by the terminal is sent to the access network device as the information of the time-frequency resource required by the terminal. That is, the bandwidth required by the terminal sent to the access network device by the terminal can be adjusted according to the current power of the terminal.
For example, as an implementation manner, 0, the third electric quantity threshold value may be divided into M segments, where M is a preset integer greater than 1, and the second step length corresponding to each segment is different. The following description is made with reference to specific examples. For example, if the third electric quantity threshold is 20% and M is preset to 4, the following may be divided:
a first stage: (0, 5% ], corresponding to a second step size of 4 × k (rb).
And a second stage: (5%, 10% ], corresponding to a second step of 3 × k (rb).
A third stage: (10%, 15% ], corresponding to a second step size of 2 k (rb).
A fourth stage: (15%, 20%) corresponding to a second step size of 1 × k (rb).
Where k is (bandwidth required by the terminal-terminal minimum bandwidth)/M. For example, the bandwidth required by the terminal is 50RB, the minimum bandwidth of the terminal is 10RB, and if M is 4, k is 10. Thus:
a first stage: (0, 5% ], corresponding to a second step size of 40 RB.
And a second stage: (5%, 10% ], corresponding to a second step size of 30 RB.
A third stage: (10%, 15% ], corresponding to a second step size of 20 RB.
A fourth stage: (15%, 20%) corresponding to a second step of 10 RB.
For example, since the current power of the terminal is 18%, which belongs to the fourth segment, the calculated bandwidth required by the terminal is reduced by 10RB, and the obtained updated bandwidth required by the terminal is 40 RB. For another example, the current power of the terminal is 12%, which belongs to the third segment, so that the calculated bandwidth required by the terminal is reduced by 20RB, the obtained updated bandwidth required by the terminal is 30RB, and so on.
It should be noted that the above is only an example, and other ways of setting the first step size may be used in practical applications, and the present application is not limited thereto.
Generally, the lower the current electric quantity value is, the more energy saving is required, so that the calculated bandwidth required by the terminal is properly reduced to reduce the allocated bandwidth, thereby achieving the purpose of energy saving. Therefore, in this scheme, if the bandwidth required by the terminal is updated, the updated bandwidth required by the terminal is sent to the access network device as the energy saving requirement information.
In another possible implementation manner, the terminal may determine the number of uplink symbols required by the terminal, and send the number of uplink symbols required by the terminal to the access network device as the energy saving requirement information.
In another possible implementation manner, when the terminal determines that the difference between the number of uplink symbols actually allocated by the terminal and the number of uplink symbols required by the terminal is greater than the symbol number difference threshold, the information of the time-frequency resource required by the terminal includes the number of uplink symbols required by the terminal, and the number of uplink symbols required by the terminal is sent to the access network device as the energy saving requirement information.
For example, the symbol number difference threshold is 2, the number of uplink symbols actually allocated by the terminal is 12, and the number of uplink symbols actually required by the terminal is 8, and since the difference between the number of uplink symbols actually allocated by the terminal (12) and the number of uplink symbols required by the terminal (8) is 4, which is greater than the symbol number difference threshold 2, the terminal determines that the number of uplink symbols of the terminal needs to be reduced, so as to achieve the purpose of saving energy. Therefore, the terminal sends the calculated uplink symbol number required by the terminal to the access network equipment as energy-saving requirement information. The meaning that the difference value between the uplink symbol number actually allocated by the terminal and the uplink symbol number required by the terminal is greater than the symbol number difference value threshold is as follows: the number of uplink symbols actually allocated to the terminal is too large, and the terminal does not need to use such a large number of uplink symbols, and therefore the number of uplink symbols can be reduced appropriately.
As an example, a calculation method of the number of uplink symbols required by the terminal is given below. And the number of uplink symbols required by the terminal is RB0 symbol/RBbwp. Wherein, RB0 is the number of RBs actually scheduled by the user, symbol is the number of symbols actually scheduled by the user (for example, the number of symbols included in one slot may be, for example, 14), and rbwpp is the currently used bandwidth part (BWP). Wherein, RB0 may be a bandwidth actually allocated by the terminal, RBbwp may be a bandwidth required by the terminal, and the specific calculation manner may refer to the foregoing description, which is not described herein again.
Based on the scheme, when the difference between the number of uplink symbols currently and actually allocated by the terminal and the number of uplink symbols required by the terminal is large, for example, larger than a symbol number difference threshold, the terminal can request the access network device to reduce the number of uplink symbols, so that the number of uplink symbols required by the terminal is sent to the access network device as energy-saving requirement information, and the access network device configures the number of uplink symbols required by the terminal for the terminal.
Further, after the terminal determines the number of uplink symbols required by the terminal, if it is determined that the current electric quantity of the terminal is smaller than the fourth electric quantity threshold, the number of uplink symbols required by the terminal can be reduced by the third step length according to the current electric quantity of the terminal to obtain an updated number of uplink symbols required by the terminal, and then the updated number of uplink symbols required by the terminal is sent to the access network device as energy saving requirement information. That is, the number of uplink symbols required by the terminal, which is sent to the access network device by the terminal, can be adjusted according to the current electric quantity of the terminal.
For example, as an implementation manner, 0 and a fourth electric quantity threshold value may be divided into L segments, where L is a preset integer greater than 1, and a third step length corresponding to each segment is different. The following description is made with reference to specific examples. For example, if the fourth electric quantity threshold is 40% and L is preset to 4, the following may be divided:
a first stage: (0, 10% ], corresponding to a third step of 4 × t.
And a second stage: (10%, 20% ], corresponding to a third step of 3 × t.
A third stage: (20%, 30% ], corresponding to a third step of 2 × t.
A fourth stage: (30%, 40%) corresponding to a third step of 1 × t.
Where, t is (number of uplink symbols required by the terminal-minimum number of uplink symbols)/L. For example, the minimum number of uplink symbols is 4, the number of uplink symbols required by the terminal is 8, and if L is 4, t is 1. Thus:
a first stage: (0, 10% ], corresponding to a third step size of 4.
And a second stage: (10%, 20% ], corresponding to a third step size of 3.
A third stage: (20%, 30% ], corresponding to a third step size of 2.
A fourth stage: (30%, 40%) corresponding to a third step size of 1.
For example, since the current power of the terminal is 18%, which belongs to the second paragraph, the number of uplink symbols required by the terminal obtained by calculation is reduced by 3, and the number of uplink symbols required by the updated terminal obtained by calculation is 5. For another example, the current power of the terminal is 32%, which belongs to the fourth segment, so that the number of uplink symbols required by the terminal obtained by calculation is reduced by 1, and the number of uplink symbols required by the updated terminal obtained by calculation is 7, and so on.
It should be noted that the above is only an example, and other ways of setting the first step size may be used in practical applications, and the present application is not limited thereto.
Generally, the lower the current electric quantity value is, the more energy saving is required, so that the calculated number of uplink symbols required by the terminal is properly reduced to reduce the number of allocated uplink symbols, thereby achieving the purpose of energy saving. Therefore, in this scheme, if the number of uplink symbols required by the terminal is updated, the updated number of uplink symbols required by the terminal is sent to the access network device as the energy saving requirement information. That is, the number of uplink symbols required by the terminal, which is sent to the access network device by the terminal, can be adjusted according to the current electric quantity of the terminal.
As an implementation manner, the implementation manners of adjusting the downlink scheduling timing of the terminal, adjusting the bandwidth required by the terminal, and adjusting the number of uplink symbols of the terminal may also be used in combination to obtain the energy saving requirement information sent by the terminal to the access network device.
As an implementation manner, the first electric quantity threshold, the second electric quantity threshold, the third electric quantity threshold, and the fourth electric quantity threshold may be partially the same, completely different, or completely the same, which is not limited in this application and may be set as needed.
As an implementation manner, in any embodiment, the terminal may send the energy saving requirement information of the terminal to the access network device through a Media Access Control (MAC) Control Element (CE), or through MSG3, or a Scheduling Request (SR), or a Preamble during an access procedure of the terminal.
Step 202, the access network device sends an energy saving indication to the terminal. Accordingly, the terminal may receive the power saving indication.
For example, the power saving indication may be an RRC reconfiguration message.
As an implementation manner, the energy saving indication may include information of a time-frequency resource required by the terminal, for example, a downlink scheduling timing of the terminal, and/or a bandwidth required by the terminal, and/or a number of uplink symbols required by the terminal. The information of the time-frequency resource needed by the terminal included in the energy-saving indication is the information of the time-frequency resource needed by the terminal, which is sent to the access network device by the terminal.
As another implementation manner, the energy saving indication may not include information of the time-frequency resource required by the terminal, and the energy saving indication is used for instructing the terminal to save energy according to the locally stored information of the time-frequency resource required by the terminal.
In an implementation manner, if the information of the time-frequency resource required by the terminal, which is received by the access network device, includes a downlink scheduling time sequence, the access network device updates the configuration of the downlink scheduling time sequence after receiving the downlink scheduling time sequence, and then may configure the downlink scheduling time sequence to the terminal through an RRC configuration message. And when the access network equipment has data scheduling, the access network equipment performs scheduling according to the configuration of the downlink scheduling time sequence sent by the terminal. And after receiving the downlink scheduling information, the terminal immediately closes the receiver, then opens the receiver at the PDSCH position corresponding to the downlink scheduling time sequence, and receives downlink data.
In one implementation, if the information of the time-frequency resource required by the terminal received by the access network device includes a bandwidth required by the terminal, the access network device converts the bandwidth required by the terminal into BWP configuration after receiving the bandwidth required by the terminal, and then may issue the BWP configuration to the terminal through an RRC configuration message, and activate the BWP required through RRC or Downlink Control Information (DCI). The terminal performs data transmission and reception on the active BWP.
In an implementation manner, if the information of the time-frequency resource required by the terminal, which is received by the access network device, includes an uplink symbol required by the terminal, after the access network device receives the uplink symbol required by the terminal, the uplink symbol configuration is updated, and then the uplink symbol configuration may be configured to the terminal through an RRC configuration message. And the access network equipment uses the new uplink symbol to schedule the terminal during the subsequent uplink scheduling.
And step 203, the terminal saves energy according to the energy saving requirement information.
Namely, the terminal configures according to at least one of the downlink scheduling time sequence of the terminal, the bandwidth required by the terminal or the uplink symbol number required by the terminal, thereby realizing the purpose of energy saving.
Through the steps 201 to 203, since the energy saving indication sent to the terminal by the access network device is used for indicating the terminal to save energy according to the energy saving requirement information sent by the terminal, the energy saving mode meets the requirements of the terminal, so that the normal service of the terminal is not affected, the energy saving effect is improved, and the energy consumption of the terminal is reduced to the maximum extent.
In case of an integrated unit, fig. 3 shows a possible exemplary block diagram of the apparatus involved in an embodiment of the invention, which apparatus 300 may be present in the form of software. The apparatus 300 may comprise: a processing unit 302 and a communication unit 303. As an implementation, the communication unit 303 may include a receiving unit and a transmitting unit. The processing unit 302 is used for controlling and managing the operation of the apparatus 300. The communication unit 303 is used to support communication of the apparatus 300 with other network entities. The apparatus 300 may further comprise a storage unit 301 for storing program codes and data of the apparatus 300.
The processing unit 302 may be a processor or a controller, and may be, for example, a general-purpose Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 303 may be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is referred to as a generic term, and in a specific implementation, the communication interface may include a plurality of interfaces. The storage unit 301 may be a memory.
In the first application, the apparatus 300 may be an access network device in any of the above embodiments, and may also be a chip in the access network device. For example, when the apparatus 300 is an access network device, the processing unit may be, for example, a processor, the communication unit may be, for example, a transceiver including radio frequency circuitry, and optionally the storage unit may be, for example, a memory. For example, when the apparatus 300 is a chip in an access network device, the processing unit may be a processor, for example, and the communication unit may be an input/output interface, a pin, a circuit, or the like, for example. The processing unit may execute a computer execution instruction stored in a storage unit, optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the access network device, such as a read-only memory (ROM) or another type of static storage device that may store static information and instructions, a Random Access Memory (RAM), and the like.
Specifically, when the communication unit 303 includes a transmitting unit and a receiving unit: a receiving unit, configured to receive energy saving requirement information from a terminal, where the energy saving requirement information includes information of time-frequency resources required by the terminal; and the sending unit is used for sending the energy-saving indication to the terminal, and the energy-saving indication is used for indicating energy saving according to the energy-saving requirement information.
In a possible implementation manner, the information of the time-frequency resource required by the terminal includes at least one of a downlink scheduling timing of the terminal, a bandwidth required by the terminal, or an uplink symbol number required by the terminal, where the downlink scheduling timing of the terminal refers to a number of time slots from a time slot in which the PDCCH scheduling information is located to a time slot in which downlink data scheduled by the scheduling information is located.
In one possible implementation, the power saving indication is an RRC reconfiguration message.
In a second application, the apparatus 300 may be a terminal in any of the above embodiments, and may also be a chip in the terminal. For example, when the apparatus 300 may be a terminal, the processing unit may be, for example, a processor, the communication unit may be, for example, a transceiver including radio frequency circuitry, and optionally the storage unit may be, for example, a memory. For example, when the apparatus 300 may be a chip in a terminal, the processing unit may be a processor, for example, and the communication unit may be an input/output interface, a pin, a circuit, or the like, for example. Alternatively, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the terminal, such as a ROM or other types of static storage devices that can store static information and instructions, a RAM, and the like.
Specifically, when the communication unit 303 includes a transmitting unit and a receiving unit: a sending unit, configured to send energy saving requirement information to an access network device, where the energy saving requirement information includes information of time-frequency resources required by the terminal; a receiving unit, configured to receive an energy saving instruction from the access network device, where the energy saving instruction is used to instruct to save energy according to the energy saving requirement information; and the processing unit is used for saving energy according to the energy saving instruction.
In a possible implementation manner, the terminal may further determine a downlink scheduling timing sequence of the terminal, where the information of the time-frequency resource required by the terminal includes the downlink scheduling timing sequence of the terminal, and the downlink scheduling timing sequence of the terminal refers to a number of time slots from a time slot in which the PDCCH scheduling information is located to a time slot in which downlink data scheduled by the scheduling information is located.
In a possible implementation manner, before the terminal determines the downlink scheduling timing sequence of the terminal, the method further includes: the terminal determines that the terminal does not have a low-delay service at present, and/or the terminal determines that the current electric quantity of the terminal is smaller than a first electric quantity threshold value.
In a possible implementation manner, if the terminal determines that the current electric quantity of the terminal is smaller than a second electric quantity threshold, the terminal increases the downlink scheduling time sequence of the terminal by a first step length according to the current electric quantity of the terminal to obtain an updated downlink scheduling time sequence; the information of the time-frequency resource required by the terminal includes a downlink scheduling time sequence of the terminal, and specifically includes: and the information of the time-frequency resource required by the terminal comprises the updated downlink scheduling time sequence.
In a possible implementation manner, the terminal may further determine a bandwidth required by the terminal; the information of the time-frequency resource needed by the terminal comprises the bandwidth needed by the terminal.
In a possible implementation manner, when the terminal determines that a difference between a bandwidth actually allocated by the terminal and a bandwidth required by the terminal is greater than a bandwidth difference threshold, the information of the time-frequency resource required by the terminal includes the bandwidth required by the terminal.
In a possible implementation manner, if the terminal determines that the current electric quantity of the terminal is smaller than a third electric quantity threshold, the bandwidth required by the terminal is reduced by a second step length according to the current electric quantity of the terminal, so as to obtain an updated bandwidth required by the terminal; the information of the time-frequency resource required by the terminal includes the bandwidth required by the terminal, and specifically includes: and the information of the time-frequency resource required by the terminal comprises the updated bandwidth required by the terminal.
In a possible implementation manner, the terminal determines the number of uplink symbols required by the terminal; the information of the time-frequency resource needed by the terminal comprises the number of uplink symbols needed by the terminal.
In a possible implementation manner, when the terminal determines that a difference between an uplink symbol number actually allocated by the terminal and an uplink symbol number required by the terminal is greater than a symbol number difference threshold, the information of the time-frequency resource required by the terminal includes the uplink symbol number required by the terminal.
In a possible implementation manner, if the terminal determines that the current electric quantity of the terminal is smaller than a fourth electric quantity threshold, the number of uplink symbols required by the terminal is reduced by a third step length according to the current electric quantity of the terminal, so that the updated number of uplink symbols required by the terminal is obtained; the information of the time-frequency resource required by the terminal includes the number of uplink symbols required by the terminal, and specifically includes: and the information of the time-frequency resource required by the terminal comprises the updated uplink symbol number required by the terminal.
In a possible implementation manner, the information of the time-frequency resource required by the terminal includes at least one of a downlink scheduling timing of the terminal, a bandwidth required by the terminal, or an uplink symbol number required by the terminal; the terminal saves energy according to the energy saving indication, and the method comprises the following steps: and the terminal carries out configuration according to at least one of a downlink scheduling time sequence of the terminal, a bandwidth required by the terminal or an uplink symbol number required by the terminal.
In one possible implementation, the power saving indication is a radio resource control, RRC, reconfiguration message.
When the apparatus shown in fig. 3 is a terminal or an access network device, reference may be made to the related description in the foregoing method embodiment for specific beneficial effects of the method for executing energy saving of the terminal, which is not described herein again.
Fig. 4 shows a simplified schematic diagram of a possible design structure of a terminal according to an embodiment of the present invention. The terminal 400 comprises a transmitter 401, a receiver 402 and a processor 403. The processor 403 may also be a controller, and is denoted as "controller/processor 403" in fig. 4. Optionally, the terminal 400 may further include a modem processor 405, where the modem processor 405 may include an encoder 406, a modulator 407, a decoder 406, and a demodulator 404.
In one example, the transmitter 401 conditions (e.g., converts to analog, filters, amplifies, and frequency upconverts, etc.) the output samples and generates an uplink signal, which is transmitted via an antenna to the access network equipment described in the embodiments above. On the downlink, the antenna receives the downlink signal transmitted by the access network device in the above embodiment. Receiver 402 conditions (e.g., filters, amplifies, downconverts, and digitizes, etc.) the received signal from the antenna and provides input samples. In modem processor 405, an encoder 406 receives traffic data and signaling messages to be sent on the uplink and processes (e.g., formats, encodes, and interleaves) the traffic data and signaling messages. A modulator 407 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. A demodulator 409 processes (e.g., demodulates) the input samples and provides symbol estimates. A decoder 406 processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages for transmission to the terminal 400. The encoder 406, modulator 407, demodulator 409 and decoder 406 may be implemented by a combined modem processor 405. These elements are processed according to the radio access technology employed by the radio access network. It should be noted that, when the terminal 400 does not include the modem processor 405, the above-mentioned functions of the modem processor 405 can also be performed by the processor 403.
The processor 403 controls and manages the operation of the terminal 400, and is used for executing the processing procedure performed by the terminal 400 in the embodiment of the present invention. For example, the processor 403 is configured to execute a processing procedure related to the terminal in the power saving method of the terminal according to any embodiment of the present application and/or other procedures of the technical solutions described in the present application.
Further, the terminal 400 may also include a memory 404, the memory 404 for storing program codes and data for the terminal 400.
Fig. 5 is a schematic diagram illustrating a possible structure of an access network device according to an embodiment of the present invention. The access network apparatus 500 includes a processor 502 and a communication interface 504. The processor 502 may also be a controller, and is shown as "controller/processor 502" in fig. 5. The communication interface 504 is used to support the access network device to communicate with the terminal. Further, the access network apparatus 500 may further include a transmitter/receiver 501. The transmitter/receiver 501 is used to support radio communication between the access network device and the terminal in the above embodiments. The processor 502 may perform various functions for communicating with the terminal. In the uplink, an uplink signal from the terminal is received via an antenna, demodulated by the receiver 501 (e.g., high frequency signals are demodulated to baseband signals), and further processed by the processor 502 to recover traffic data and signaling information sent by the terminal. On the downlink, traffic data and signaling messages are processed by processor 502 and modulated (e.g., by modulating a baseband signal to a high frequency signal) by transmitter 501 to generate a downlink signal, which is transmitted via the antenna to the terminals. It should be noted that the above demodulation or modulation functions may also be performed by the processor 502.
For example, the processor 502 is further configured to execute a process related to the access network device in the energy saving method of any terminal in the embodiment of the present application and/or other processes of the technical solutions described in the present application.
Further, the access network apparatus 500 may further include a memory 503, the memory 503 being used to store program codes and data of the access network apparatus 500.
It will be appreciated that fig. 5 shows only a simplified design of the access network device 500. In practical applications, the access network device 500 may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all access network devices that may implement the embodiments of the present invention are within the scope of the embodiments of the present invention.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The various illustrative logical units and circuits described in this application may be implemented or operated upon by design of a general purpose processor, a digital signal processor, 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. 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 digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.
The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored 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. For example, a storage medium may be 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, which may be disposed in a terminal. In the alternative, the processor and the storage medium may reside in different components within the terminal.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims (13)

1. A method for saving power of a terminal, comprising:
a terminal sends energy-saving requirement information to access network equipment, wherein the energy-saving requirement information comprises information of time-frequency resources required by the terminal, the information of the time-frequency resources required by the terminal comprises a downlink scheduling time sequence of the terminal, the downlink scheduling time sequence is the time slot number from a time slot of Physical Downlink Control Channel (PDCCH) scheduling information to a time slot of downlink data scheduled by the scheduling information, and the downlink scheduling time sequence is used for indicating a time point when the terminal starts a receiver;
the terminal receives an energy-saving indication from the access network equipment, wherein the energy-saving indication is used for indicating the terminal to save energy according to the locally stored information of time-frequency resources required by the terminal;
and the terminal saves energy according to the energy saving demand information.
2. The method of claim 1, further comprising:
the terminal determines that the terminal does not have a low-delay service at present, and/or the terminal determines that the current electric quantity of the terminal is smaller than a first electric quantity threshold value.
3. The method of claim 1 or 2, wherein the method further comprises:
the terminal determines that the current electric quantity of the terminal is smaller than a second electric quantity threshold value, and then increases a first step length for a downlink scheduling time sequence of the terminal according to the current electric quantity of the terminal to obtain an updated downlink scheduling time sequence;
the information of the time-frequency resource required by the terminal includes a downlink scheduling time sequence of the terminal, and specifically includes:
and the information of the time-frequency resource required by the terminal comprises the updated downlink scheduling time sequence.
4. The method of claim 1 or 2, wherein the method further comprises:
the terminal determines the bandwidth required by the terminal;
the information of the time-frequency resource needed by the terminal comprises the bandwidth needed by the terminal.
5. The method of claim 4, wherein the information of the time-frequency resources required by the terminal comprises the bandwidth required by the terminal when the terminal determines that the difference between the bandwidth actually allocated by the terminal and the bandwidth required by the terminal is greater than a bandwidth difference threshold.
6. The method of claim 5, wherein the method further comprises:
if the terminal determines that the current electric quantity of the terminal is smaller than a third electric quantity threshold value, reducing the bandwidth required by the terminal by a second step length according to the current electric quantity of the terminal to obtain the updated bandwidth required by the terminal;
the information of the time-frequency resource required by the terminal includes the bandwidth required by the terminal, and specifically includes:
and the information of the time-frequency resource required by the terminal comprises the updated bandwidth required by the terminal.
7. The method of any of claims 1, 2, 5, 6, further comprising:
the terminal determines the number of uplink symbols required by the terminal;
the information of the time-frequency resource needed by the terminal comprises the number of uplink symbols needed by the terminal.
8. The method of claim 7, wherein when the terminal determines that a difference between the number of uplink symbols actually allocated by the terminal and the number of uplink symbols required by the terminal is greater than a symbol number difference threshold, the information of the time-frequency resources required by the terminal includes the number of uplink symbols required by the terminal.
9. The method of claim 8, wherein the method further comprises:
if the terminal determines that the current electric quantity of the terminal is smaller than a fourth electric quantity threshold value, reducing the number of uplink symbols required by the terminal by a third step length according to the current electric quantity of the terminal to obtain the updated number of uplink symbols required by the terminal;
the information of the time-frequency resource required by the terminal includes the number of uplink symbols required by the terminal, and specifically includes:
and the information of the time-frequency resource required by the terminal comprises the updated uplink symbol number required by the terminal.
10. A method for saving power of a terminal, comprising:
the method comprises the steps that access network equipment receives energy-saving requirement information from a terminal, wherein the energy-saving requirement information comprises information of time-frequency resources required by the terminal, the information of the time-frequency resources required by the terminal comprises a downlink scheduling time sequence of the terminal, the downlink scheduling time sequence refers to the time slot number from a time slot of Physical Downlink Control Channel (PDCCH) scheduling information to a time slot of downlink data scheduled by the scheduling information, and the downlink scheduling time sequence is used for indicating a time point when the terminal starts a receiver;
and the access network equipment sends an energy-saving indication to the terminal, wherein the energy-saving indication is used for indicating the terminal to save energy according to the locally stored information of the time-frequency resources required by the terminal.
11. The method of claim 10, wherein the information of the time-frequency resources required by the terminal further includes a bandwidth required by the terminal and/or a number of uplink symbols required by the terminal.
12. A communications apparatus, comprising: a processor and memory, the processor being configured to execute program code stored by the memory to cause the communication device to perform the method of any of claims 1 to 9.
13. A communications apparatus, comprising: a processor and a memory, the processor being configured to execute program code stored by the memory to cause the communication device to perform the method of claim 10 or 11.
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