CN110636581A - Cell switching method, device and terminal - Google Patents
Cell switching method, device and terminal Download PDFInfo
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- CN110636581A CN110636581A CN201910994638.4A CN201910994638A CN110636581A CN 110636581 A CN110636581 A CN 110636581A CN 201910994638 A CN201910994638 A CN 201910994638A CN 110636581 A CN110636581 A CN 110636581A
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- cell
- terminal
- frequency band
- base station
- electric quantity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a cell switching method and a device, wherein the method comprises the following steps: determining a frequency band of a second cell according to the acquired residual electric quantity of the terminal, wherein the frequency band of the second cell is lower than that of the first cell, and the frequency band of the first cell is a working frequency band before the terminal is switched; and indicating the base station to allocate the frequency band of the second cell to the terminal, wherein the frequency band of the second cell is the working frequency band after the terminal is switched. Calculating to obtain a frequency band of a second cell through the residual electric quantity of the terminal, wherein the frequency band of the second cell is lower than that of the first cell, and indicating the base station to allocate the frequency band of the second cell to the terminal, so that the terminal is switched from the first cell to the second cell with a low frequency band, the frequency of reselecting the cell by the terminal is reduced, and frequency band resources are saved; and the switched terminal works in the second cell of the low frequency band, so that the electric quantity consumption rate of the terminal is reduced, the standby time and the communication time of the terminal are prolonged, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a cell switching method, apparatus, and terminal.
Background
With the rapid development of the mobile internet, the requirements of users on intelligent terminals are higher and higher. An operator in the wireless communication network allocates a proper frequency band for the intelligent terminal by using the base station so that the intelligent terminal can be accessed into the wireless communication network. The user can use the intelligent terminal to perform various services, such as browsing web pages to obtain latest information, playing video files or audio files, performing video calls, and the like.
However, the current base stations share the spectrum by using a static management strategy or a dynamic spectrum sharing mechanism, that is, each base station may have a frequency of a different frequency band, and the base stations allocate different frequency bands to the terminal users, so that the terminal users can access to the wireless communication network within the frequency band planned by the base stations. However, the transmission signal strength of the intelligent terminal corresponding to the frequencies of different frequency bands is different, the electric quantity of the terminal to be consumed is also different, when the electric quantity of the intelligent terminal is low, the intelligent terminal still needs to be accessed into the wireless communication network in a fixed frequency band, so that the consumption rate of the electric quantity cannot be reduced by the intelligent terminal, and further the user experience degree is poor.
Disclosure of Invention
Therefore, the invention provides a cell switching method, a cell switching device and a terminal, and aims to solve the problem that in the prior art, the terminal cannot slow down the consumption rate of electric quantity due to the fact that the frequency band allocated to the terminal by a base station is fixed. The invention aims to solve the problems that: how to slow down the power consumption rate of the terminal.
In order to achieve the above object, a first aspect of the present invention provides a cell handover method, including: determining a frequency band of a second cell according to the acquired residual electric quantity of the terminal, wherein the frequency band of the second cell is lower than that of the first cell, and the frequency band of the first cell is a working frequency band before the terminal is switched; and indicating the base station to allocate the frequency band of the second cell to the terminal, wherein the frequency band of the second cell is the working frequency band after the terminal is switched.
The step of determining the frequency band of the second cell according to the acquired residual electric quantity of the terminal comprises the following steps: comparing the residual electric quantity with a first preset threshold value to obtain a comparison result; if the comparison result is that the residual electric quantity is smaller than or equal to a first preset threshold value, calculating to obtain the transmitting signal strength according to the corresponding relation between the residual electric quantity and the transmitting signal strength of the terminal; and determining the frequency band of the second cell according to the strength of the transmitted signal.
Wherein, the corresponding relation of the residual capacity and the transmitting signal intensity of the terminal comprises: if the lower the strength of the transmitting signal is determined, the more the terminal saves power and the more the remaining power.
Wherein, according to the intensity of the transmitted signal, the step of determining the frequency band of the second cell comprises: if the lower the transmission signal strength is determined, the lower the frequency band of the second cell.
Before the step of determining the frequency band of the second cell according to the acquired remaining power of the terminal, the method further includes: and responding to a cell switching request which is forwarded by the base station and sent by the terminal, and acquiring the residual electric quantity of the terminal, wherein the cell switching request comprises the residual electric quantity of the terminal and the frequency band of the first cell.
After the step of instructing the base station to allocate the frequency band of the second cell to the terminal, the method further includes: and instructing the base station to perform handover on the context information of the terminal.
In order to achieve the above object, a second aspect of the present invention provides a cell handover method for a terminal, the method including: sending a cell switching request to a base station, wherein the cell switching request comprises the residual electric quantity of a terminal and the frequency band of a first cell; and switching from the first cell to the second cell according to the frequency band of the second cell allocated by the base station, wherein the frequency band of the first cell is lower than that of the second cell, and the frequency band of the second cell is determined according to the residual electric quantity of the terminal.
Before the step of sending the cell switching request to the base station, the method further comprises the following steps: detecting the residual electric quantity; and comparing the residual electric quantity with a second preset threshold, and writing the residual electric quantity into the cell switching request if the residual electric quantity is determined to be less than or equal to the second preset threshold.
In order to achieve the above object, a third aspect of the present invention provides a cell switching apparatus, comprising: the frequency band determining module is used for determining the frequency band of a second cell according to the acquired residual electric quantity of the terminal, wherein the frequency band of the second cell is lower than that of the first cell, and the frequency band of the first cell is a working frequency band before the terminal is switched; and the frequency band allocation module is used for indicating the base station to allocate the frequency band of the second cell to the terminal, wherein the frequency band of the second cell is the working frequency band after the terminal is switched.
In order to achieve the above object, a fourth aspect of the present invention provides a terminal comprising: the system comprises a sending module, a receiving module and a sending module, wherein the sending module is used for sending a cell switching request to a base station, and the cell switching request comprises the residual electric quantity of a terminal and the frequency band of a first cell; and the switching module is used for switching the first cell to the second cell according to the frequency band of the second cell allocated by the base station, wherein the frequency band of the first cell is lower than that of the second cell, and the frequency band of the second cell is determined according to the residual electric quantity of the terminal.
The invention has the following advantages: calculating to obtain a frequency band of a second cell through the residual electric quantity of the terminal, wherein the frequency band of the second cell is lower than that of the first cell, and indicating the base station to allocate the frequency band of the second cell to the terminal, so that the terminal is switched from the first cell to the second cell with a low frequency band, the frequency of reselecting the cell by the terminal is reduced, and frequency band resources are saved; and the switched terminal works in the second cell of the low frequency band, so that the electric quantity consumption rate of the terminal is reduced, the standby time and the communication time of the terminal are prolonged, and the user experience is improved.
Calculating to obtain the transmitting signal intensity of the terminal according to the corresponding relation among the residual electric quantity of the terminal, the transmitting signal intensity of the terminal and the residual electric quantity of the terminal; and then confirm the frequency channel of the second cell through the emission signal intensity of the terminal, make the terminal switch over to the second cell of the low frequency channel, have effectively reduced the emission signal intensity of the terminal, and then reduce the electric quantity consumption of the terminal, have lengthened the standby time of the terminal.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flowchart of a cell handover method according to a first embodiment of the present invention;
fig. 2 is a flowchart of a cell handover method according to a second embodiment of the present invention;
fig. 3 is a flowchart of a cell handover method of a terminal according to a third embodiment of the present invention;
fig. 4 is a block diagram of a cell switching apparatus according to a fourth embodiment of the present invention;
fig. 5 is a block diagram of a terminal according to a fifth embodiment of the present invention;
fig. 6 is a block diagram of a cell switching system according to a sixth embodiment of the present invention.
In the drawings:
401: the frequency band determination module 402: frequency band distribution module
501: the sending module 502: switching module
601: session management entity 602: base station A
603: the terminal 604: base station B
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
A first embodiment of the present invention relates to a cell switching method. For slowing down the power consumption rate of the terminal.
The following describes details of the cell switching method in this embodiment in detail, and the following is only for facilitating understanding of the details of the implementation of this solution and is not necessary for implementing this solution.
Fig. 1 is a flowchart of a cell handover method in this embodiment, which can be applied to a session management entity. It should be noted that The session management entity may be an Access and mobility management Function (AMF) entity in a fifth Generation mobile communication network (5G), or may be another entity capable of implementing a session management Function. The method may include the following steps.
In step 101, the frequency band of the second cell is determined according to the acquired remaining power of the terminal.
And the frequency band of the second cell is lower than that of the first cell, and the frequency band of the first cell is a working frequency band before the terminal is switched.
It should be noted that, in a location with poor signal coverage in a cell, a low frequency band has better transmission performance, and the transmission power of a terminal accessing the low frequency band is smaller, so that the terminal is more power-saving, and the remaining power is more.
In one specific implementation, comparing the remaining power with a first preset threshold to obtain a comparison result; if the comparison result is that the residual electric quantity is smaller than or equal to a first preset threshold value, calculating to obtain the transmitting signal strength according to the corresponding relation between the residual electric quantity and the transmitting signal strength of the terminal; and determining the frequency band of the second cell according to the strength of the transmitted signal.
Note that the frequency band refers to a frequency range of electromagnetic waves, and has a unit of Hz. For example, when the remaining power of the terminal is 30%, the strength of the transmitting and receiving signal of the terminal is a fourth strength, and the frequency bands to which the corresponding terminals expect to connect are D0 Hz-D1 Hz; when the residual electric quantity of the terminal is 60%, the strength of a transmitting signal and a receiving signal of the terminal is a third strength, and the frequency band which the corresponding terminal is expected to be connected with is C0 Hz-C1 Hz; when the residual electric quantity of the terminal is 90%, the strength of the transmitting and receiving signals of the terminal is a second strength, and the frequency band which the corresponding terminal expects to be connected with is B0 Hz-B1 Hz; when the residual power of the terminal is 100%, the strength of a transmitting signal and a receiving signal of the terminal is a first strength, and the frequency band to which the corresponding terminal is expected to be connected is A0 Hz-A1 Hz; according to the corresponding relation, the transmitting and receiving signal strength of the terminal and the frequency band of the second cell can be determined.
Wherein, the corresponding relation of the residual capacity and the transmitting signal intensity of the terminal comprises: if the lower the strength of the transmitting signal is determined, the more the terminal saves power and the more the remaining power.
For example, when the strength of the transmitted and received signal is the third strength, it is known that the remaining power of the current terminal is 60%, if the strength of the transmitted and received signal is reduced by the terminal, for example, the strength of the transmitted and received signal is reduced to the second strength, the terminal needs to use less power in the process to support the lower signal strength, that is, the second strength; the reduction speed of the remaining power of the terminal becomes slow, thereby extending the standby time of the terminal.
Wherein, according to the intensity of the transmitted signal, the step of determining the frequency band of the second cell comprises: if the lower the transmission signal strength is determined, the lower the frequency band of the second cell.
It should be noted that, when the power of the terminal is low, the terminal hopes to prolong the standby time as much as possible, and the strength of the transmission signal is reduced, and if the frequency band of the cell where the terminal is currently located is high, so that the strength of the transmission signal of the terminal is not enough to be connected to the current cell, the terminal will request to switch to a neighboring cell with a lower frequency band, and further switch the terminal to a low-frequency band cell, reduce the strength of the transmission signal of the terminal to reduce the power consumption of the terminal, and prolong the standby time of the terminal.
In step 102, the base station is instructed to allocate the frequency band of the second cell to the terminal.
And the frequency band of the second cell is the working frequency band after the terminal is switched.
When the AMF determines that the terminal needs to be switched, the AMF sends a frequency band allocation message to the base station, so that the base station can know that the frequency band of the second cell needs to be allocated to the terminal as a working frequency band, and the frequency band of the second cell is lower than that of the first cell, so that the terminal can work in the low-frequency cell, the electric quantity used by the terminal is reduced, and the standby time of the terminal is prolonged.
It should be noted that, in a general case, the base station provides the terminal with an explicit cell list, where the cell list includes Area identification codes (RAN Area IDs) of a plurality of Radio Access networks, where a RAN Area is a subset of or equal to a Core Network Tracking Area (Core Network Tracking Area), and a RAN Area corresponds to a RAN Area ID, and a RAN Area is composed of a Tracking Area identification Code (TAI) and an optional RAN Area Code. A cell will be broadcasting its RANarea ID into the cell.
In the embodiment, the frequency band of the second cell is obtained through calculation according to the remaining power of the terminal, the frequency band of the second cell is lower than the frequency band of the first cell, and the base station is instructed to allocate the frequency band of the second cell to the terminal, so that the terminal is switched from the first cell to the second cell with a low frequency band, the frequency of reselecting the cell by the terminal is reduced, and the frequency band resource is saved; and the switched terminal works in the second cell of the low frequency band, so that the electric quantity consumption rate of the terminal is reduced, the standby time and the communication time of the terminal are prolonged, and the user experience is improved.
A second embodiment of the present invention relates to a cell switching method. The second embodiment is substantially the same as the first embodiment, and mainly differs therefrom in that: after instructing the base station to allocate the frequency band of the second cell to the terminal and completing cell handover of the terminal, the base station needs to be instructed to perform handover on the context information of the terminal.
Fig. 2 is a flowchart of a cell handover method in this embodiment, which can be applied to a session management entity. The session management entity may be an AMF entity in the 5G communication network, or may be another entity capable of implementing the session management function. The method may include the following steps. The method may include the following steps.
In step 201, in response to a cell handover request transmitted by a terminal and forwarded by a base station, a remaining power of the terminal is obtained.
The cell switching request comprises the residual power of the terminal and the frequency band of the first cell.
It should be noted that, when the terminal is in a non-connected state (e.g., an RRC _ INACTIVE state, where the RRC is a Radio Resource Control (RRC) layer and a non-connected state (INACTIVE)), the terminal actively sends a cell handover request to the base station because the remaining power is less, so that the base station forwards the cell handover request to the session management entity, where the cell handover request includes the remaining power of the terminal and a frequency band of a cell in which the terminal is currently located, that is, a first cell frequency band. The non-connected state is configured to the terminal by the base station, for example, because the remaining power of the terminal is insufficient, so that the terminal cannot transmit the strength of the transmission signal of the frequency band having the first cell, the base station may configure the terminal to be in the non-connected state, and specifically, a Radio Network Temporary Identity (RNTI) may be used to indicate that the terminal is in the RRC-INACTIVE state. And further, the base station acquires the residual electric quantity of the terminal through the cell switching request.
In step 202, the frequency band of the second cell is determined according to the acquired remaining power of the terminal.
In step 203, the base station is instructed to allocate the frequency band of the second cell to the terminal.
It should be noted that steps 202 to 203 in this embodiment are the same as steps 101 to 102 in the first embodiment, and are not repeated herein.
In step 204, the base station is instructed to handover context information of the terminal.
It should be noted that, after the terminal accesses the second cell by using the frequency band of the second cell, the session management entity needs to inform the base station that the context information of the terminal needs to be updated, even if the base station to which the source cell to which the terminal belongs (i.e., the base station to which the first cell belongs) hands over the context information of the terminal to the base station to which the cell to which the terminal is handed over belongs (i.e., the base station to which the second cell belongs).
The base station to which the first cell belongs and the base station to which the second cell belongs may also be the same base station, but the corresponding cell frequency bands are different, and the cell frequency band provided by the base station to which the second cell belongs is lower than the cell frequency band provided by the base station to which the first cell belongs. And the terminal is switched to the second cell according to the working frequency band (namely the frequency band of the second cell) distributed by the base station to which the second cell belongs.
In a specific implementation, the session management entity sends the context handover information to the base station to which the first cell belongs, so that the base station to which the first cell belongs sends the context information of the terminal to the base station to which the second cell belongs, and the base station to which the second cell belongs updates the context information of the terminal in the cell after receiving the context information of the terminal. Specifically, the context information may include air interface encryption information between the terminal and the base station, capability level information of the terminal, signaling bearer information, data bearer information, and the like.
In this embodiment, after the obtained remaining power condition of the terminal indicates the base station to allocate the frequency band of the second cell to the terminal, the terminal can be switched to the second cell of the low frequency band, and indicates the base station to update the context information of the terminal, so that the terminal can continue to operate in the second cell of the low frequency band, thereby reducing the transmitted signal strength of the terminal, reducing the power consumption rate of the terminal, prolonging the standby time and communication time of the terminal, and improving the user experience.
A third embodiment of the present invention relates to a cell switching method of a terminal. Fig. 3 is a flowchart of a cell handover method in this embodiment, which can be used for a terminal. The terminal may be a smart terminal, such as a smart phone or the like. The method may include the following steps.
In step 301, a cell handover request is sent to a base station.
The cell switching request comprises the residual power of the terminal and the frequency band of the first cell.
In a specific implementation, before the step of sending the cell switching request to the base station, the remaining power needs to be detected; and comparing the residual electric quantity with a second preset threshold, and writing the residual electric quantity into the cell switching request if the residual electric quantity is determined to be less than or equal to the second preset threshold.
It should be noted that the terminal monitors the remaining power of its own battery at any time, and when the remaining power of the battery is lower than a second preset threshold (for example, the second preset threshold may be set to 10% of the total power of the battery, or 15% of the total power of the battery, etc.), the terminal 603 writes the remaining power of the battery into the cell switching request. And further transmitting the cell switching request to the base station, so that the base station can know that the current residual capacity of the terminal is not enough to support the frequency band of the first cell.
In step 302, the first cell is switched to the second cell according to the frequency band of the second cell allocated by the base station.
The frequency band of the first cell is lower than that of the second cell, and the frequency band of the second cell is determined according to the residual electric quantity of the terminal.
It should be noted that the base station acquires the remaining power of the terminal according to the received cell handover request, and informs the session management entity of the remaining power, so that the session management entity determines whether to allocate a cell of another frequency band to the terminal so as to enable the terminal to be handed over to another cell for operation. When the session management entity compares the remaining power of the terminal with a first preset threshold, and finds that the remaining power of the terminal battery is less than the first preset threshold (for example, the first preset threshold may be set to 10% of the total power of the battery, or 5% of the total power of the battery, etc.), the base station is instructed to access the terminal 603 to a low-frequency cell (for example, a second cell). The first preset threshold may be set according to an actual setting, and is not limited to the above example, and other first preset thresholds that are not illustrated are also within the protection scope of the present invention, and are not described herein again.
For example, in a 5G base station in the same location, there may be a plurality of adjacent cells, each of which is composed of frequency points of different frequency bands, such as a cell composed of a frequency point of a 700MHz frequency band, a frequency point of an 800MHz frequency band, a frequency point of a 900MHz frequency band, a frequency point of a 1800MHz frequency band, a frequency point of a 2.6GHz frequency band, or a frequency point of a 3.5G frequency band. By comparing the frequency bands, the cell corresponding to the low-frequency band has better transmission performance, and the transmitting power of the terminal accessing the low-frequency band cell is smaller (namely, the transmitting signal strength is lower), so that the terminal is more power-saving, the remaining electric quantity is more, and the standby time of the terminal is effectively prolonged.
In the embodiment, the cell switching request carrying the remaining power of the terminal is sent to the base station, so that the base station can allocate the frequency band of the second cell lower than the frequency band of the first cell to the terminal, the transmitted signal strength of the terminal is reduced, the terminal is more power-saving, the standby time of the terminal is effectively prolonged, and the user experience is improved.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
A fourth embodiment of the present invention relates to a cell switching apparatus, and specific implementation of the apparatus can refer to the related description of the first embodiment, and repeated details are not repeated. It should be noted that, the specific implementation of the apparatus in this embodiment may also refer to the related description of the second embodiment, but is not limited to the above two examples, and other unexplained examples are also within the protection scope of the apparatus.
As shown in fig. 4, the apparatus mainly includes: a frequency band determining module 401, configured to determine a frequency band of a second cell according to the obtained remaining power of the terminal, where the frequency band of the second cell is lower than the frequency band of the first cell, and the frequency band of the first cell is a working frequency band before the terminal is switched; a frequency band allocation module 402, configured to instruct the base station to allocate a frequency band of a second cell to the terminal, where the frequency band of the second cell is a working frequency band after the terminal is switched.
The fifth embodiment of the present invention relates to a terminal, and specific implementation of the terminal may refer to the related description of the third embodiment, and repeated descriptions are omitted. It should be noted that the specific implementation of the terminal in this embodiment is not limited to the above embodiment, and other undescribed embodiments are also within the scope of the present apparatus.
As shown in fig. 5, the terminal mainly includes: a sending module 501, configured to send a cell switching request to a base station, where the cell switching request includes a remaining power of a terminal and a frequency band of a first cell; a switching module 502, configured to switch from a first cell to a second cell according to a frequency band of the second cell allocated by a base station, where the frequency band of the first cell is lower than that of the second cell, and the frequency band of the second cell is a frequency band determined according to a remaining power of a terminal.
It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.
A sixth embodiment of the present invention relates to a cell switching system, and as shown in fig. 6, the system specifically includes a terminal 603, a base station 602 (base station a), a session management entity 601(AMF), and a base station 604 (base station B).
In step 701, the terminal 603 monitors the remaining power of its own battery.
Specifically, when the remaining capacity of the battery is lower than a second preset threshold (for example, the second preset threshold may be set to 10% of the total capacity of the battery, or 15% of the total capacity of the battery, etc.), the terminal 603 writes the remaining capacity of the battery into the cell handover request.
It should be noted that the second preset threshold may be set according to practical applications, and is not limited to the above example, and other non-example second preset thresholds are also within the protection scope of the present invention, and are not described herein again.
In step 702, the terminal 603 actively sends a cell handover request to the base station a.
If the terminal 603 is in a non-connected state (e.g., RRC _ INACTIVE state, where RRC is Radio Resource Control (RRC) layer and non-connected state (INACTIVE)), the cell switching request includes the remaining power of the terminal battery, the frequency band of the cell in which the terminal 603 is currently located, and an identifier that the terminal 603 is in the non-connected state. It should be noted that the non-connected state is allocated by the base station B, for example, a Radio Network Temporary Identity (RNTI) is used to indicate that the terminal 603 is in the RRC-INACTIVE state.
In step 703, the base station a receives the cell handover request sent by the terminal 603, and forwards the cell handover request to the AMF.
The base station a may change the state of the terminal 603 to a CONNECTED state (for example, RRC _ CONNECTED state), may change the state of the terminal 603 to a non-CONNECTED state (for example, RRC _ INACTIVE state), and may change the state of the terminal 603 to an IDLE state (for example, RRC _ IDLE state).
In step 704, the base station a obtains the identifier of the base station B by parsing the RNTI included in the cell handover request, and sends an obtaining request to the base station B for obtaining the context information of the terminal 603.
It should be noted that the base station a may notify the base station B of the downlink data forwarding address through the acquisition request, so as to prevent the loss of the downlink user data buffered in the base station B.
In step 705, the AMF sends a cell handover response to the base station a, instructing the base station a to access the terminal 603 to the low band cell.
It should be noted that, after receiving the cell handover request sent by the base station a, the AMF obtains the remaining power of the battery of the terminal 603, compares the remaining power of the battery with a first preset threshold, and if the remaining power of the battery is found to be smaller than the first preset threshold (for example, the first preset threshold may be set to be 10% of the total power of the battery, or 15% of the total power of the battery, etc.), instructs the base station a to access the terminal 603 to the low-frequency cell. The first preset threshold may be set according to an actual setting, and is not limited to the above example, and other first preset thresholds that are not illustrated are also within the protection scope of the present invention, and are not described herein again.
In step 706, the AMF sends a handover request to base station B, which is a request instructing base station B to hand over the context information of terminal 603 to base station a.
In step 707, after receiving the cell handover response sent by the AMF, the base station a allocates a low-frequency cell to the terminal 603, so that the terminal 603 can be handed over from the base station B to a wireless network provided by the base station a with a lower frequency band.
It should be noted that, the base station a and the base station B may also be the same base station, but the corresponding cell frequency bands are different, and the cell frequency band provided by the base station a is lower than the cell frequency band provided by the base station B. The terminal 603 switches to the wireless network provided by the base station a according to the working frequency band allocated by the base station a.
For example, in a 5G base station in the same location, there may be a plurality of adjacent cells, each of which is composed of frequency points of different frequency bands, such as a cell composed of a frequency point of a 700MHz frequency band, a frequency point of an 800MHz frequency band, a frequency point of a 900MHz frequency band, a frequency point of a 1800MHz frequency band, a frequency point of a 2.6GHz frequency band, or a frequency point of a 3.5G frequency band. The low-frequency band has better transmission performance corresponding to the position with poor signal coverage, and the transmitting power of the terminal accessed to the low-frequency band is smaller, so that the terminal is more power-saving, the residual electric quantity is more, and the battery standby time of the terminal is effectively prolonged.
In step 708, base station a receives the updated context information transmitted from base station B, and updates the context information of terminal 603.
In step 709, the terminal 603 sends a cell handover complete message to the base station a after accessing the base station a using the working frequency band.
In step 710, the base station a forwards a cell handover complete message to the AMF, completing the cell handover procedure.
At this point, the process of cell switching according to the remaining battery power of the terminal 603 is completed.
In the embodiment, the remaining power of the terminal is compared with a first preset threshold, so that when the remaining power is lower than the first preset threshold, cell switching can be mainly required, and the session management entity can instruct the base station to allocate a low-frequency cell to the terminal, so that the terminal is switched from the first cell to a second cell with a low-frequency band, the frequency of reselecting the cell by the terminal is reduced, and frequency band resources are saved; and the switched terminal works in the second cell of the low frequency band, so that the electric quantity consumption rate of the terminal is reduced, the standby time and the communication time of the terminal are prolonged, and the user experience is improved.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A method of cell handover, the method comprising:
determining a frequency band of a second cell according to the acquired residual electric quantity of the terminal, wherein the frequency band of the second cell is lower than that of a first cell, and the frequency band of the first cell is a working frequency band before the terminal is switched;
and indicating a base station to distribute the frequency band of the second cell to the terminal, wherein the frequency band of the second cell is the working frequency band after the terminal is switched.
2. The cell switching method according to claim 1, wherein the step of determining the frequency band of the second cell according to the acquired remaining power of the terminal includes:
comparing the residual electric quantity with a first preset threshold value to obtain a comparison result;
if the comparison result is that the residual electric quantity is smaller than or equal to the first preset threshold value, calculating to obtain the transmitting signal strength according to the corresponding relation between the residual electric quantity, the residual electric quantity and the transmitting signal strength of the terminal;
and determining the frequency band of the second cell according to the strength of the transmitted signal.
3. The cell switching method according to claim 2, wherein the correspondence between the remaining power and the transmission signal strength of the terminal comprises:
and if the lower the strength of the transmitting signal is determined, the more power is saved by the terminal, and the more the residual electric quantity is.
4. The cell switching method according to claim 2, wherein the step of determining the frequency band of the second cell according to the strength of the transmitted signal comprises:
and if the lower the strength of the transmitting signal is determined, the lower the frequency band of the second cell is.
5. The cell switching method according to any one of claims 1 to 4, wherein before the step of determining the frequency band of the second cell according to the acquired remaining power of the terminal, the method further includes:
and responding to a cell switching request which is forwarded by the base station and sent by the terminal, and acquiring the residual electric quantity of the terminal, wherein the cell switching request comprises the residual electric quantity of the terminal and the frequency band of the first cell.
6. The cell switching method according to any one of claims 1 to 4, wherein after the step of instructing the base station to allocate the frequency band of the second cell to the terminal, the method further comprises:
and instructing the base station to perform handover on the context information of the terminal.
7. A method for switching a cell of a terminal, the method comprising:
sending a cell switching request to a base station, wherein the cell switching request comprises the residual electric quantity of a terminal and the frequency band of a first cell;
and switching from the first cell to the second cell according to the frequency band of the second cell allocated by the base station, wherein the frequency band of the first cell is lower than the frequency band of the second cell, and the frequency band of the second cell is determined according to the residual electric quantity of the terminal.
8. The method of claim 7, further comprising, before the step of sending the cell switch request to the base station:
detecting the residual electric quantity;
and comparing the residual electric quantity with a second preset threshold, and writing the residual electric quantity into the cell switching request if the residual electric quantity is determined to be less than or equal to the second preset threshold.
9. A cell switching apparatus, comprising:
a frequency band determining module, configured to determine a frequency band of a second cell according to the obtained remaining power of the terminal, where the frequency band of the second cell is lower than a frequency band of a first cell, and the frequency band of the first cell is a working frequency band before the terminal is switched;
and the frequency band allocation module is used for indicating the base station to allocate the frequency band of the second cell to the terminal, wherein the frequency band of the second cell is the working frequency band after the terminal is switched.
10. A terminal, comprising:
the terminal comprises a sending module, a receiving module and a sending module, wherein the sending module is used for sending a cell switching request to a base station, and the cell switching request comprises the residual electric quantity of the terminal and the frequency band of a first cell;
and the switching module is used for switching the frequency band of the second cell allocated by the base station from the first cell to the second cell, wherein the frequency band of the first cell is lower than the frequency band of the second cell, and the frequency band of the second cell is determined according to the residual electric quantity of the terminal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111615839A (en) * | 2020-04-23 | 2020-09-01 | 北京小米移动软件有限公司 | Method for acquiring and providing configuration information, electronic device and storage medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150139015A1 (en) * | 2010-09-22 | 2015-05-21 | Qualcomm Incorporated | LTE Band Avoidance for RF Coexistence Interference |
| CN105357728A (en) * | 2015-11-28 | 2016-02-24 | 广东欧珀移动通信有限公司 | Network type switching method, device and mobile terminal |
| CN105391470A (en) * | 2015-11-28 | 2016-03-09 | 广东欧珀移动通信有限公司 | Network switching method, apparatus and terminal |
| CN105430724A (en) * | 2015-11-28 | 2016-03-23 | 广东欧珀移动通信有限公司 | Frequency band processing method and device in communication terminal and communication terminal |
| CN105517080A (en) * | 2015-11-28 | 2016-04-20 | 广东欧珀移动通信有限公司 | Network standard switching method and device and terminal |
| CN105517083A (en) * | 2015-11-28 | 2016-04-20 | 广东欧珀移动通信有限公司 | Network switching method, device and terminal |
| CN105517129A (en) * | 2015-11-28 | 2016-04-20 | 广东欧珀移动通信有限公司 | Network type switching method in communication terminal and communication terminal |
| US20160295471A1 (en) * | 2015-03-31 | 2016-10-06 | Verizon Patent And Licensing Inc. | Inter-frequency cell reselection |
| CN107493597A (en) * | 2017-09-30 | 2017-12-19 | 北京小米移动软件有限公司 | Reduce the method, apparatus and system of mobile terminal power consumption |
| CN108901062A (en) * | 2018-06-12 | 2018-11-27 | Oppo广东移动通信有限公司 | Wireless communication transmission method, device, mobile terminal and computer-readable storage medium |
-
2019
- 2019-10-18 CN CN201910994638.4A patent/CN110636581B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150139015A1 (en) * | 2010-09-22 | 2015-05-21 | Qualcomm Incorporated | LTE Band Avoidance for RF Coexistence Interference |
| US20160295471A1 (en) * | 2015-03-31 | 2016-10-06 | Verizon Patent And Licensing Inc. | Inter-frequency cell reselection |
| CN105357728A (en) * | 2015-11-28 | 2016-02-24 | 广东欧珀移动通信有限公司 | Network type switching method, device and mobile terminal |
| CN105391470A (en) * | 2015-11-28 | 2016-03-09 | 广东欧珀移动通信有限公司 | Network switching method, apparatus and terminal |
| CN105430724A (en) * | 2015-11-28 | 2016-03-23 | 广东欧珀移动通信有限公司 | Frequency band processing method and device in communication terminal and communication terminal |
| CN105517080A (en) * | 2015-11-28 | 2016-04-20 | 广东欧珀移动通信有限公司 | Network standard switching method and device and terminal |
| CN105517083A (en) * | 2015-11-28 | 2016-04-20 | 广东欧珀移动通信有限公司 | Network switching method, device and terminal |
| CN105517129A (en) * | 2015-11-28 | 2016-04-20 | 广东欧珀移动通信有限公司 | Network type switching method in communication terminal and communication terminal |
| CN107493597A (en) * | 2017-09-30 | 2017-12-19 | 北京小米移动软件有限公司 | Reduce the method, apparatus and system of mobile terminal power consumption |
| CN108901062A (en) * | 2018-06-12 | 2018-11-27 | Oppo广东移动通信有限公司 | Wireless communication transmission method, device, mobile terminal and computer-readable storage medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111615839A (en) * | 2020-04-23 | 2020-09-01 | 北京小米移动软件有限公司 | Method for acquiring and providing configuration information, electronic device and storage medium |
| WO2021212414A1 (en) * | 2020-04-23 | 2021-10-28 | 北京小米移动软件有限公司 | Method for obtaining configuration information and method for providing configuration information, electronic device, and storage medium |
| CN111615839B (en) * | 2020-04-23 | 2022-07-01 | 北京小米移动软件有限公司 | Method for acquiring and providing configuration information, electronic device and storage medium |
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|---|---|
| CN110636581B (en) | 2022-08-23 |
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