CN111432445A - Network cell selection method and device, mobile terminal and storage medium - Google Patents

Network cell selection method and device, mobile terminal and storage medium Download PDF

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Publication number
CN111432445A
CN111432445A CN202010253848.0A CN202010253848A CN111432445A CN 111432445 A CN111432445 A CN 111432445A CN 202010253848 A CN202010253848 A CN 202010253848A CN 111432445 A CN111432445 A CN 111432445A
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target
cell
service type
determining
network
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CN111432445B (en
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吴泽先
王福强
毛盼盼
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Wingtech Communication Co Ltd
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Wingtech Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a method and a device for selecting a network cell, a mobile terminal and a storage medium. The network cell selection method comprises the following steps: receiving a cell broadcast message sent by a base station, wherein the cell broadcast message comprises one or more accessible initial candidate cells; calling historical service information of the mobile terminal based on the cell broadcast message; determining a target service type according to the historical service information; and selecting a target cell for network access according to the target service type, wherein the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells. The effect of improving the accuracy of selecting the network cell is achieved.

Description

Network cell selection method and device, mobile terminal and storage medium
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a network cell selection method, a network cell selection device, a mobile terminal and a storage medium.
Background
The network cell is selected to allow a mobile terminal (e.g., a mobile phone) to camp on the cell as soon as possible, so that voice call service, data transmission service, and the like are performed in the cell.
Currently, a commonly used scheme is to select a cell corresponding to a beam with the best signal quality for camping when a mobile terminal selects a network cell.
However, the mobile terminal selects a cell to camp on only through signal quality, the accuracy of cell selection is not sufficient, and when the cell on which the mobile terminal resides does not conform to the service required by the user using the mobile terminal, the mobile terminal may cause unnecessary cell reselection when initiating the service.
Disclosure of Invention
The embodiment of the invention provides a method and a device for selecting a network cell, a mobile terminal and a storage medium, which are used for improving the accuracy of selecting the network cell.
In an embodiment, an embodiment of the present invention provides a method for selecting a network cell, which is applied to a mobile terminal, and the method includes:
receiving a cell broadcast message sent by a base station, wherein the cell broadcast message comprises one or more accessible initial candidate cells;
calling historical service information of the mobile terminal based on the cell broadcast message;
determining a target service type according to the historical service information;
and selecting a target cell for network access according to the target service type, wherein the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells.
Optionally, the historical service information includes a historical service type and an occurrence frequency of the historical service type, and the determining the target service type according to the historical service information includes:
and determining the target service type according to the occurrence frequency of the historical service type.
Optionally, the historical service information further includes a preset time period corresponding to the occurrence frequency, and the determining the target service type according to the occurrence frequency of the historical service type includes:
acquiring the current time of the mobile terminal;
determining a target time period corresponding to the current time according to a preset time period corresponding to the occurrence frequency;
and determining the target service type by taking the occurrence frequency corresponding to the target time period as the occurrence frequency of the historical service type.
Optionally, the historical service information further includes a location area corresponding to the occurrence frequency, and the determining the target service type according to the occurrence frequency of the historical service type includes:
acquiring the current position of the mobile terminal;
determining a target area corresponding to the current position according to the position area corresponding to the occurrence frequency;
and determining the target service type by taking the occurrence frequency corresponding to the target area as the occurrence frequency of the historical service type.
Optionally, the selecting a target cell for network access according to the target service type includes:
determining a plurality of target candidate cells corresponding to the target service type from the one or more accessible initial candidate cells according to the target service type;
and selecting one of the target candidate cells as the target cell for network access.
Optionally, the selecting one of the target candidate cells as the target cell for network access includes:
determining the wave beam frequency bands and the signal quality corresponding to the target candidate cells;
judging whether the wave beam frequency band is matched with a preset frequency band range or not, wherein the preset frequency band range comprises a first frequency band range and a second frequency band range;
when the wave beam frequency range is matched with the first frequency range, determining the target candidate cell with the best signal quality in the target candidate cells as the target cell for network access;
when the beam frequency range is matched with the second frequency range, acquiring a beam set of each target candidate cell, wherein the beam set comprises a plurality of beams with the best signal quality in the target candidate cell;
calculating a composite signal quality for each of the target candidate cells by a maximal ratio combining algorithm based on the plurality of beams for each of the target candidate cells;
and determining the target candidate cell with the best comprehensive signal quality as the target cell for network access.
Optionally, the determining a target service type according to the occurrence frequency of the historical service type includes:
and taking the historical service type with the highest occurrence frequency as the target service type.
Optionally, the method further includes:
and when the target cell corresponding to the target service type does not exist, selecting one initial candidate cell for accessing according to the public land mobile network, the wireless access category and the frequency.
In an embodiment, an embodiment of the present invention provides an apparatus for selecting a network cell, where the apparatus includes:
a broadcast message receiving module, configured to receive a cell broadcast message sent by a base station, where the cell broadcast message includes one or more accessible initial candidate cells;
a historical service information calling module, configured to call historical service information of the mobile terminal based on the cell broadcast message;
the target service type determining module is used for determining the target service type according to the historical service information;
and the cell selection module is used for selecting a target cell for network access according to the target service type, wherein the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells.
In one embodiment, an embodiment of the present invention provides a mobile terminal, including:
one or more processors;
a storage device to store one or more computer programs,
when executed by the one or more processors, cause the one or more processors to implement a method of network cell selection as in any embodiment of the invention.
In one embodiment, the present invention provides a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to implement the network cell selection method according to any embodiment of the present invention.
The embodiment of the invention receives a cell broadcast message sent by a base station, wherein the cell broadcast message comprises one or more accessible initial candidate cells; calling historical service information of the mobile terminal based on the cell broadcast message; determining a target service type according to the historical service information; and selecting a target cell for network access according to the target service type, wherein the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells, so that the problems that the cell selection accuracy is insufficient and the mobile terminal initiates unnecessary cell reselection when the cell where the mobile terminal resides does not conform to the service required by a user using the mobile terminal due to the fact that the mobile terminal selects the cell for residence through signal quality are solved, and the accuracy of selecting the network cell is improved are achieved.
Drawings
Fig. 1 is a flowchart illustrating a method for selecting a network cell according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating another method for selecting a network cell according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a network cell selection apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. A process may be terminated when its operations are completed, but may have additional steps not included in the figure. A process may correspond to a method, a function, a procedure, a subroutine, a sub computer program, or the like.
Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, components, and the like, but these orientations, actions, steps, or components are not limited by these terms. These terms are only used to distinguish one direction, action, step or component from another direction, action, step or component. For example, the initial candidate cell may be referred to as a second candidate cell, and similarly, the second candidate cell may be referred to as the initial candidate cell, without departing from the scope of the present application. Both the initial candidate cell and the second candidate cell are candidate cells, but they are not the same candidate cell. The terms "first", "second", etc. are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Examples
Fig. 1 is a schematic flowchart of a method for selecting a network cell according to an embodiment of the present invention, which is applicable to a scenario in which a mobile terminal selects a network cell for network access.
As shown in fig. 1, a method for selecting a network cell provided in an embodiment of the present invention includes:
s110, receiving a cell broadcast message sent by a base station, wherein the cell broadcast message comprises one or more accessible initial candidate cells.
The cell broadcast is a function of transmitting information to the mobile terminal through a Cell Broadcast Channel (CBCH) and then selecting reception by a user. In this embodiment, the cell broadcast message refers to a message sent by the base station to the mobile terminal through a cell broadcast channel, and informs the mobile terminal of one or more initial candidate cells accessible to the mobile terminal. The mobile terminal in this embodiment is a terminal inserted with a SIM (Subscriber Identity Module) card, and the terminal includes, but is not limited to, a mobile phone, an IoT device (internet of things device), and the like, and the present invention is not limited herein. The initial candidate cell refers to a cell to which the mobile terminal can perform network access (e.g., camp on). The initial candidate cell in this embodiment may be a candidate cell under one base station or multiple base stations, and is determined according to the location of the mobile terminal and the distribution of the base stations, which is not limited herein.
And S120, calling the historical service information of the mobile terminal based on the cell broadcast message.
The historical service information refers to information of services executed by the mobile terminal, such as information of voice call services and information of data transmission services. Alternatively, the historical service information may be stored in a storage space in the mobile terminal, or may be stored in a storage space installed on a SIM card of the mobile terminal, which is not limited herein. When the historical service information is stored in a memory space within the mobile terminal, then the historical service information is associated with the mobile terminal. When the historical service information is stored in the storage space of the SIM card installed in the mobile terminal, because the use habit of the user is fixed, even if the user changes the mobile phone, the use habit of the user can be kept as long as the SIM card is not changed, and a proper cell is selected for network access. Optionally, when the historical service information is stored in the SIM card, the mobile terminal may store the historical service information to the cloud at regular time, and may download the historical service information to a new SIM card from the cloud even if the SIM card of the user is lost and needs to be repaired.
Specifically, the historical service information may be historical service information within a preset time, such as a time from the first start of use to the last use or a time from the last use as a starting point, within one month, and the like, which is not limited herein. Optionally, the historical service information includes a historical service type and preset information corresponding to the historical service type, for example, occurrence frequency corresponding to the historical service type, location information corresponding to the historical service type, and the like, which is not limited herein.
And S130, determining the target service type according to the historical service information.
The target service type is a service type determined according to historical service information in a certain mode. For example, when the historical service information includes the historical service type and the occurrence frequency corresponding to the historical service type, the historical service type with the highest occurrence frequency may be used as the target service type; for another example, when the historical service information includes a historical service type and location information corresponding to the historical service type, the target service type is determined according to the current location and the location information of the mobile terminal, which is not limited herein. Optionally, the target service type may be a voice call service, a low-speed data service, a high-speed data service, or a high-bandwidth high-speed service, and the like, which is not limited herein.
In an optional embodiment, the historical service information includes a historical service type and an occurrence frequency of the historical service type, and the determining a target service type according to the historical service information includes:
and determining the target service type according to the occurrence frequency of the historical service type.
In the present embodiment, the frequency of occurrence is dependent on the historical traffic type. The historical service type refers to a type of service initiated by the mobile terminal or a SIM card installed on the mobile terminal. Optionally, the historical service types include, but are not limited to, voice call service, low-speed data service, high-bandwidth high-speed service, and the like. Optionally, the historical service type with the highest occurrence frequency may be selected as the target service type, and the historical service type with the highest occurrence frequency may also be selected as the target service type. Preferably, the historical traffic type with the highest occurrence frequency is used as the target traffic type.
In an optional implementation manner, the historical service information further includes a preset time period corresponding to the occurrence frequency, and the determining a target service type according to the occurrence frequency of the historical service type includes:
acquiring the current time of the mobile terminal; determining a target time period corresponding to the current time according to a preset time period corresponding to the occurrence frequency; and determining the target service type by taking the occurrence frequency corresponding to the target time period as the occurrence frequency of the historical service type.
In the present embodiment, the preset time period refers to a time interval set as needed, for example, 7:00 to 9: 00. The target time period refers to a time period corresponding to the current time. Illustratively, the historical service type with the highest occurrence frequency of 7:00-9:00 is A, the historical service type with the highest occurrence frequency of 9:00-11:00 is B, and the current time is 8: 00, the target time period is 7:00-9:00, and the historical service type a is taken as the target service type of the embodiment. Specifically, when the user uses the mobile terminal, the frequently used services in different time periods are not necessarily the same. For example, when a user uses a voice call service most frequently during working day, but uses a data service (WeChat chat, game playing and the like) instead of a voice call after working, the target service type can be determined to be the voice call service or the data transmission service according to the current time, and the accuracy of selecting a network cell is further improved. In this embodiment, the division of the preset time period may be set as needed, and is not particularly limited. The embodiment takes the occurrence frequency corresponding to the target time period as the sending frequency of the historical service type, thereby determining the target service type and further improving the accuracy of selecting the network cell.
In another optional implementation manner, the historical service information further includes a location area corresponding to the occurrence frequency, and the determining a target service type according to the occurrence frequency of the historical service type includes:
acquiring the current position of the mobile terminal; determining a target area corresponding to the current position according to the position area corresponding to the occurrence frequency; and determining the target service type by taking the occurrence frequency corresponding to the target area as the occurrence frequency of the historical service type.
In this embodiment, the location region refers to a location range set as needed, for example, Shenzhen city, Guangzhou city, etc.; and for example, Shenzhen, nan mountain region, Shenzhen, Luohu region, etc., which are not specifically limited herein. The target area refers to a location area corresponding to the current location. For example, the historical service type with the highest occurrence frequency in the southern mountain area is a, the historical service type with the highest occurrence frequency in the lakeward area is B, when the current position of the mobile terminal is in the southern mountain area, the target area is the southern mountain area, and the historical service type a is the target service type of the present embodiment. In the present embodiment, the division of the position area may be set as needed, and is not particularly limited. The embodiment takes the occurrence frequency corresponding to the target area type as the occurrence frequency of the historical service type, thereby determining the target service type and further improving the accuracy of selecting the network cell.
In another optional implementation, the historical service information further includes a location area corresponding to the occurrence frequency and a preset time period corresponding to the occurrence frequency, and the determining the target service type according to the occurrence frequency of the historical service type includes:
acquiring the current time and the current position of the mobile terminal; determining a target time period corresponding to the current time according to a preset time period corresponding to the occurrence frequency and determining a target area corresponding to the current position according to a position area corresponding to the occurrence frequency; and determining the service type according to the target time period and the occurrence frequency corresponding to the target area.
In this embodiment, the historical service information includes a historical service type, an occurrence frequency corresponding to the historical service type, a preset time period corresponding to the historical service type, and a location area corresponding to the historical service type. When the occurrence frequency corresponding to the historical service type, the preset time period corresponding to the historical service type and the position area corresponding to the historical service type all conform to the required historical service type, which is the target service type in the embodiment.
S140, selecting a target cell for network access according to the target service type, wherein the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells.
The target cell refers to an initial candidate cell corresponding to the target service type. Optionally, when there are multiple cells corresponding to the target service, the signal quality is selected as the target cell for network access. Specifically, each initial candidate cell provides a service type of a specific service, such as an initial candidate cell providing a voice call service, an initial candidate cell providing a high speed data service, and the like. When the initial candidate cell providing the voice call service is resident, the mobile terminal in the cell can only enjoy the voice call service, but when the mobile terminal needs to initiate data transmission, the mobile terminal needs to reselect to the cell providing the data service. Therefore, in the existing scheme, it is not appropriate to perform residence only through the signal quality of the cell, for example, the cell a is configured to provide only the voice service, but the mobile phone initiates the data service after residence, and as a result, the mobile phone is rejected, and only through a special message such as a reset direction, another cell supporting the data service can be reselected to the mobile phone, which is equivalent to the cell selection of the voice service. The usage scenario of the network cell selection method of the present embodiment is not particularly limited. For example, when a mobile phone is started, a network needs to be accessed, and the method can be used for selecting network access; for example, when the cell reselection is performed by the mobile phone, the cell needs to be switched, and the network access can also be selected by using the method.
In the embodiment, the target service type is determined through the historical service information of the mobile terminal, and then the cell corresponding to the target service type is selected for network access, so that the problem of insufficient accuracy caused by the fact that the cell is selected to reside only through signal quality is solved, particularly the problem of inaccurate cell residence under communication systems after 5G and 5G is solved.
In an optional embodiment, selecting a target cell for network access according to the target service type includes:
determining a plurality of target candidate cells corresponding to the target service type from the one or more accessible initial candidate cells according to the target service type; and selecting one of the target candidate cells as the target cell for network access.
In the present embodiment, the target candidate cell refers to a candidate cell corresponding to the target service type among the initial candidate cells. Specifically, there are a plurality of target candidate cells. In the present embodiment, one of the target candidate cells is selected as a target cell for network access. For example, the target candidate cell with the best signal quality is selected as the target cell, which is not limited herein.
In an optional embodiment, the method for selecting a network cell further includes:
and when the target cell corresponding to the target service type does not exist, selecting one initial candidate cell for accessing according to the public land mobile network, the wireless access category and the frequency.
In this embodiment, a public land mobile network (P L MN) refers to a network established and operated for the purpose of providing terrestrial mobile services to the public, which is typically interconnected with the Public Switched Telephone Network (PSTN) to form an entire regional or national scale communication network, Radio Access category (RAT) refers to the Type of Radio connection that a mobile terminal makes with a base station, frequency band refers to the frequency interval of communication Radio, such AS D-band (2570M-2620M) and F-band (1880M-1920M) of a TD-L TE network, after the mobile terminal selects a P L MN, it performs cell selection-in other words, it searches for a suitable cell to camp on, when camped on the selected cell, the mobile terminal obtains system information broadcast by the cell, NAS performs P L MN selection according to a list of available P567 MN provided by the AS, NAS indicates the selected P L MN, and other equivalent P L (if it successfully camped on the selected cell, it searches for a suitable RAT, if it does not successfully register on the selected RAT, it performs an attempt to search for a high quality RAT supported RAT (P-band) including a search for all RAT-supported RAT (P-band) (P4930M) once it has found on the selected RAT-P3623.
According to the technical scheme of the embodiment of the invention, the cell broadcast message sent by the base station is received, wherein the cell broadcast message comprises one or more accessible initial candidate cells; calling historical service information of the mobile terminal based on the cell broadcast message; determining a target service type according to the historical service information; and after the target service type is determined through historical service information, the target cell is determined to be accessed according to the service type instead of the signal quality access of a simple reference cell, so that the method is more suitable for the network access habit of a mobile terminal, and the technical effect of improving the accuracy of selecting the network cell is achieved.
In an embodiment, fig. 2 is a flowchart illustrating a method for selecting a network cell according to an embodiment of the present invention. The present embodiment is further detailed in the above technical solution, and is suitable for a scenario in which a plurality of cells corresponding to a target service type are selected. The method may be performed by a selection device of a network cell, which may be implemented in software and/or hardware, and may be integrated on a mobile terminal.
As shown in fig. 2, a method for selecting a network cell provided in an embodiment of the present invention includes:
s210, receiving a cell broadcast message sent by a base station, wherein the cell broadcast message comprises one or more accessible initial candidate cells.
S220, calling the historical service information of the mobile terminal based on the cell broadcast message.
And S230, determining the target service type according to the historical service information.
S240, determining a plurality of target candidate cells corresponding to the target service type from the one or more accessible initial candidate cells according to the target service type.
And S250, determining the beam frequency bands and the signal quality corresponding to the target candidate cells.
The beam frequency band refers to a frequency band of a beam corresponding to each target candidate cell. A beam is an SSB (Synchronization Signal Block) beam within an SSB period.
And S260, judging whether the wave beam frequency band is matched with a preset frequency band range or not, wherein the preset frequency band range comprises a first frequency band range and a second frequency band range.
In the present embodiment, specific ranges of the first frequency range and the second frequency range are not limited, and may be set as needed. Preferably, the first frequency band range may be 6 gigahertz (HZ) or less, and the second frequency band range may be 6GHZ or more.
And S270, when the beam frequency range is matched with the first frequency range, determining the target candidate cell with the best signal quality in the target candidate cells as the target cell for network access.
In this step, optionally, the first frequency band range is below 6 gigahertz (HZ). Specifically, for the frequency band below 6GHZ, that is, the FR1 frequency band, the subcarrier spacing u is relatively small, SSB (Synchronization Signal Block) beams in an SSB period are few, and because the frequency is lower than millimeter waves, the penetration loss and the air interface transmission loss are relatively small, and the diffraction capability is strong, only one beam with the best Signal quality in the SSB period needs to be selected to represent the Signal quality of the cell, so that the cell selection is made quickly.
S280, when the beam frequency range matches the second frequency range, obtaining a beam set of each target candidate cell, where the beam set includes a plurality of beams with the best signal quality in the target candidate cell.
In this step, optionally, the second frequency band range may be above 6 GHZ. The beam set refers to a plurality of beams, for example, three beams, with the best signal quality in each target candidate cell. Specifically, for a frequency band above 6GHZ, that is, an FR2 frequency band, the subcarrier spacing configuration u is relatively large, SSB beams in an SSB period are many, and in addition, millimeter wave penetration loss and air interface transmission loss are relatively large, and diffraction capability is weak, so that beam stability is poor, and therefore, evaluation by one beam is not accurate enough.
S290, calculating the integrated signal quality of each target candidate cell through a maximal ratio combining algorithm based on the plurality of beams of each target candidate cell.
Here, maximal ratio combining refers to combining signals by multiplying each of a plurality of beams by a different coefficient wi (i ═ 1,2, …, N), and the coefficient is determined in relation to the fading coefficient hi (i ═ 1,2, …, N) of the plurality of beam branches, that is, the fading coefficient hi (i ═ 1,2, …, N) is determined
Figure BDA0002436488630000151
And obtaining the comprehensive signal quality of the corresponding target candidate cell after the plurality of beams pass through a maximum ratio combining algorithm.
S300, determining the target candidate cell with the best comprehensive signal quality as the target cell for network access.
In this step, the target candidate cell with the best overall signal quality is selected and determined as the target cell, and network access is performed.
In this embodiment, the integrated signal quality of the cell is obtained by calculating the plurality of beams, and the target cell is determined by the integrated signal quality, so that the accuracy of access is improved. In the current scheme, the signal quality of the best beam is generally selected as the comprehensive signal quality of the cell for reference, and the embodiment performs comprehensive calculation by selecting the three beams with the best signals, so that the problem of inaccurate cell selection is solved, and particularly the problem of inaccurate cell selection under 5G and 5G future communication systems is solved. In this embodiment, the comprehensive signal quality determined by the maximum combining ratio of the multiple beams is higher in accuracy compared with a mode of selecting a single beam as the comprehensive signal quality, and the stability of the selected cell is higher, especially the stability of the cell selected by the communication system after 5G and 5G is improved.
According to the technical scheme of the embodiment of the invention, the cell broadcast message sent by the base station is received, wherein the cell broadcast message comprises one or more accessible initial candidate cells; calling historical service information of the mobile terminal based on the cell broadcast message; determining a target service type according to the historical service information; determining a plurality of target candidate cells corresponding to the target service type from the one or more accessible initial candidate cells according to the target service type, determining a beam frequency range and signal quality corresponding to the plurality of target candidate cells, determining whether the beam frequency range is matched with a preset frequency range, wherein the preset frequency range comprises a first frequency range and a second frequency range, when the beam frequency range is matched with the first frequency range, determining a target candidate cell with the best signal quality in the plurality of target candidate cells as the target cell for network access, when the beam frequency range is matched with the second frequency range, obtaining a beam set of each target candidate cell, wherein the beam set comprises a plurality of beams with the best signal quality in the target candidate cell, and based on the plurality of beams of target candidate cells, and after the target service type is determined through historical service information, the target cell is determined to be accessed according to the service type instead of the signal quality access of a simple reference cell, so that the method is more suitable for the network access habit of a mobile terminal and achieves the technical effect of improving the accuracy of selecting the network cell. In addition, the calculation of the quality of the integrated signal is carried out through a plurality of wave beams, and the stability effect of the selected cell is improved.
In an embodiment, fig. 3 is a schematic structural diagram of a device for selecting a network cell according to an embodiment of the present invention, where the embodiment is applicable to a scenario in which a message sent by a base station is verified, and the device may be implemented in a software and/or hardware manner and may be integrated on a mobile terminal.
As shown in fig. 3, the network cell selection apparatus provided in this embodiment may include a broadcast message receiving module 310, a historical service information invoking module 320, a target service type determining module 330, and a cell selection module 340, where:
a broadcast message receiving module 310, configured to receive a cell broadcast message sent by a base station, where the cell broadcast message includes one or more accessible initial candidate cells; a historical service information calling module 320, configured to call historical service information of the mobile terminal based on the cell broadcast message; a target service type determining module 330, configured to determine a target service type according to the historical service information; a cell selection module 340, configured to select a target cell for network access according to the target service type, where the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells.
Optionally, the historical service information includes a historical service type and an occurrence frequency of the historical service type, and the target service type determining module 330 is specifically configured to determine the target service type according to the occurrence frequency of the historical service type.
Optionally, the historical service information further includes a preset time period corresponding to the occurrence frequency, and the target service type determining module 330 includes: and the current time acquiring unit is used for acquiring the current time of the mobile terminal. And the target time period determining unit is used for determining the target time period corresponding to the current time according to the preset time period corresponding to the occurrence frequency. And the target service type determining unit is used for determining the target service type by taking the occurrence frequency corresponding to the target time period as the occurrence frequency of the historical service type.
Optionally, the historical service information further includes a location area corresponding to the occurrence frequency, and the target service type determining module 330 further includes: and the current position determining unit is used for acquiring the current position of the mobile terminal. And the target area determining unit is used for determining a target area corresponding to the current position according to the position area corresponding to the occurrence frequency. The target service type determining unit is further configured to determine the target service type by taking the occurrence frequency corresponding to the target area as the occurrence frequency of the historical service type.
Optionally, the cell selection module 340 includes: and the target candidate cell determining unit is used for determining a plurality of target candidate cells corresponding to the target service type from the one or more accessible initial candidate cells according to the target service type. A cell selection unit, configured to select one of the target candidate cells as the target cell for network access.
Optionally, the cell selection unit includes: and the beam frequency band determining subunit is used for determining the beam frequency bands and the signal quality corresponding to the target candidate cells. And the judging unit is used for judging whether the wave beam frequency band is matched with a preset frequency band range, and the preset frequency band range comprises a first frequency band range and a second frequency band range. A cell selection subunit, configured to determine, when the beam frequency band matches the first frequency band range, a target candidate cell with the best signal quality in the multiple target candidate cells as the target cell for network access;
when the beam frequency range is matched with the second frequency range, acquiring a beam set of each target candidate cell, wherein the beam set comprises a plurality of beams with the best signal quality in the target candidate cell;
calculating a composite signal quality for each of the target candidate cells by a maximal ratio combining algorithm based on the plurality of beams for each of the target candidate cells;
and determining the target candidate cell with the best comprehensive signal quality as the target cell for network access.
Optionally, the target service type determining module 330 is specifically configured to use a historical service type with the highest occurrence frequency as the target service type.
Optionally, the cell selection module 340 is further configured to select one of the initial candidate cells for access according to the public land mobile network, the radio access category, and the frequency when there is no target cell corresponding to the target service type.
The network cell selection device provided by the embodiment of the invention can execute the network cell selection method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. Reference may be made to the description of any method embodiment of the invention not specifically described in this embodiment.
In an embodiment, fig. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention. Fig. 4 illustrates a block diagram of an exemplary mobile terminal 612 suitable for use in implementing embodiments of the present invention. The mobile terminal 612 shown in fig. 4 is only an example, and should not bring any limitations to the functions and the scope of the application of the embodiments of the present invention.
As shown in fig. 4, the mobile terminal 612 is represented in the form of a general mobile terminal. Components of mobile terminal 612 may include, but are not limited to: one or more processors 616, a memory device 628, and a bus 618 that couples the various system components including the memory device 628 and the processors 616.
Bus 618 represents one or more of any of several types of bus structures, including a memory device bus or memory device controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, enhanced ISA bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.
Mobile terminal 612 typically includes a variety of computer system readable media. Such media may be any available media that is accessible by mobile terminal 612 and includes both volatile and nonvolatile media, removable and non-removable media.
Storage 628 may include computer system readable media in the form of volatile Memory, such as Random Access Memory (RAM) 630 and/or cache Memory 632. Terminal 612 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 634 may be used to read from or write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, and commonly referred to as a "hard drive"). Although not shown in FIG. 4, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk such as a Compact disk Read-Only Memory (CD-ROM), Digital Video disk Read-Only Memory (DVD-ROM) or other optical media may be provided. In such cases, each drive may be connected to bus 618 by one or more data media interfaces. The memory device 628 may include at least one computer program product having a set (e.g., at least one) of computer program modules configured to perform the functions of embodiments of the present invention.
A computer program/utility 640 having a set (at least one) of computer program modules 642 may be stored, for example, in storage 628, such computer program modules 642 including, but not limited to, an operating system, one or more application computer programs, other computer program modules, and computer program data, each of which examples or some combination may comprise an implementation of a network environment. The computer program modules 642 generally perform the functions and/or methods of the described embodiments of the present invention.
Mobile terminal 612 may also communicate with one or more external devices 614 (e.g., keyboard, pointing terminal, display 624, etc.), one or more terminals that enable a user to interact with mobile terminal 612, and/or any terminal (e.g., Network card, modem, etc.) that enables mobile terminal 612 to communicate with one or more other computing terminals.A communication may be made via AN input/output (I/O) interface 622, and mobile terminal 612 may also communicate via a Network adapter 620 with one or more networks (e.g., local Area Network (L Area Network, L AN), Wide Area Network (WAN), and/or public Network, such as the Internet). As shown in FIG. 4, Network adapter 620 may communicate via bus 618 with other modules of mobile terminal 612. it should be appreciated, although not shown, that other hardware and/or software modules may be used in conjunction with mobile terminal 612, including, but not limited to, microcode, terminal drives, Redundant processors, external disk drive Arrays, disk Arrays (disk Arrays, RAID storage systems, RAID disk drives, and the like.
The processor 616 executes various functional applications and data processing by running computer programs stored in the storage device 628, for example, implementing a method for selecting a network cell provided by any embodiment of the present invention, which may include:
receiving a cell broadcast message sent by a base station, wherein the cell broadcast message comprises one or more accessible initial candidate cells; calling historical service information of the mobile terminal based on the cell broadcast message; determining a target service type according to the historical service information; and selecting a target cell for network access according to the target service type, wherein the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells.
In one embodiment, processor 616, when running the computer program, further performs the steps of:
and determining the target service type according to the occurrence frequency of the historical service type.
In one embodiment, processor 616, when running the computer program, further performs the steps of:
acquiring the current time of the mobile terminal; determining a target time period corresponding to the current time according to a preset time period corresponding to the occurrence frequency; and determining the target service type by taking the occurrence frequency corresponding to the target time period as the occurrence frequency of the historical service type.
In one embodiment, processor 616, when running the computer program, further performs the steps of:
acquiring the current position of the mobile terminal; determining a target area corresponding to the current position according to the position area corresponding to the occurrence frequency; and determining the target service type by taking the occurrence frequency corresponding to the target area as the occurrence frequency of the historical service type.
In one embodiment, processor 616, when running the computer program, further performs the steps of:
determining a plurality of target candidate cells corresponding to the target service type from the one or more accessible initial candidate cells according to the target service type; and selecting one of the target candidate cells as the target cell for network access.
In one embodiment, processor 616, when running the computer program, further performs the steps of:
determining the wave beam frequency bands and the signal quality corresponding to the target candidate cells; judging whether the wave beam frequency band is matched with a preset frequency band range or not, wherein the preset frequency band range comprises a first frequency band range and a second frequency band range; when the wave beam frequency range is matched with the first frequency range, determining the target candidate cell with the best signal quality in the target candidate cells as the target cell for network access; when the beam frequency range is matched with the second frequency range, acquiring a beam set of each target candidate cell, wherein the beam set comprises a plurality of beams with the best signal quality in the target candidate cell; calculating a composite signal quality for each of the target candidate cells by a maximal ratio combining algorithm based on the plurality of beams for each of the target candidate cells; and determining the target candidate cell with the best comprehensive signal quality as the target cell for network access.
In one embodiment, processor 616, when running the computer program, further performs the steps of:
and taking the historical service type with the highest occurrence frequency as the target service type.
In one embodiment, processor 616, when running the computer program, further performs the steps of:
and when the target cell corresponding to the target service type does not exist, selecting one initial candidate cell for accessing according to the public land mobile network, the wireless access category and the frequency.
According to the technical scheme of the embodiment of the invention, the cell broadcast message sent by the base station is received, wherein the cell broadcast message comprises one or more accessible initial candidate cells; calling historical service information of the mobile terminal based on the cell broadcast message; determining a target service type according to the historical service information; and after the target service type is determined through historical service information, the target cell is determined to be accessed according to the service type instead of the signal quality access of a simple reference cell, so that the method is more suitable for the network access habit of a mobile terminal, and the technical effect of improving the accuracy of selecting the network cell is achieved.
In an embodiment, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a method for selecting a network cell according to any embodiment of the present invention, where the method may include:
receiving a cell broadcast message sent by a base station, wherein the cell broadcast message comprises one or more accessible initial candidate cells; calling historical service information of the mobile terminal based on the cell broadcast message; determining a target service type according to the historical service information; and selecting a target cell for network access according to the target service type, wherein the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and determining the target service type according to the occurrence frequency of the historical service type.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring the current time of the mobile terminal; determining a target time period corresponding to the current time according to a preset time period corresponding to the occurrence frequency; and determining the target service type by taking the occurrence frequency corresponding to the target time period as the occurrence frequency of the historical service type.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring the current position of the mobile terminal; determining a target area corresponding to the current position according to the position area corresponding to the occurrence frequency; and determining the target service type by taking the occurrence frequency corresponding to the target area as the occurrence frequency of the historical service type.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining a plurality of target candidate cells corresponding to the target service type from the one or more accessible initial candidate cells according to the target service type; and selecting one of the target candidate cells as the target cell for network access.
In one embodiment, the computer program when executed by the processor further performs the steps of:
determining the wave beam frequency bands and the signal quality corresponding to the target candidate cells;
judging whether the wave beam frequency band is matched with a preset frequency band range or not, wherein the preset frequency band range comprises a first frequency band range and a second frequency band range;
when the wave beam frequency range is matched with the first frequency range, determining the target candidate cell with the best signal quality in the target candidate cells as the target cell for network access;
when the beam frequency range is matched with the second frequency range, acquiring a beam set of each target candidate cell, wherein the beam set comprises a plurality of beams with the best signal quality in the target candidate cell;
calculating a composite signal quality for each of the target candidate cells by a maximal ratio combining algorithm based on the plurality of beams for each of the target candidate cells;
and determining the target candidate cell with the best comprehensive signal quality as the target cell for network access.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and taking the historical service type with the highest occurrence frequency as the target service type.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and when the target cell corresponding to the target service type does not exist, selecting one initial candidate cell for accessing according to the public land mobile network, the wireless access category and the frequency.
The computer-readable storage media of embodiments of the invention may take any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable computer program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a computer program for use by or in connection with an instruction execution system, apparatus, or device.
Computer program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present invention may be written in any combination of one or more computer programming languages, including AN object oriented computer programming language such as Java, Smalltalk, C + +, and conventional procedural computer programming languages, such as the "C" language or similar computer programming languages.
According to the technical scheme of the embodiment of the invention, the cell broadcast message sent by the base station is received, wherein the cell broadcast message comprises one or more accessible initial candidate cells; calling historical service information of the mobile terminal based on the cell broadcast message; determining a target service type according to the historical service information; and after the target service type is determined through historical service information, the target cell is determined to be accessed according to the service type instead of the signal quality access of a simple reference cell, so that the method is more suitable for the network access habit of a mobile terminal, and the technical effect of improving the accuracy of selecting the network cell is achieved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (11)

1. A method for selecting a network cell is applied to a mobile terminal, and is characterized in that the method comprises the following steps:
receiving a cell broadcast message sent by a base station, wherein the cell broadcast message comprises one or more accessible initial candidate cells;
calling historical service information of the mobile terminal based on the cell broadcast message;
determining a target service type according to the historical service information;
and selecting a target cell for network access according to the target service type, wherein the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells.
2. The method of selecting a network cell according to claim 1, wherein the historical traffic information includes historical traffic types and occurrence frequencies of the historical traffic types, and the determining a target traffic type according to the historical traffic information includes:
and determining the target service type according to the occurrence frequency of the historical service type.
3. The method for selecting a network cell according to claim 2, wherein the historical service information further includes a preset time period corresponding to the occurrence frequency, and the determining the target service type according to the occurrence frequency of the historical service type includes:
acquiring the current time of the mobile terminal;
determining a target time period corresponding to the current time according to a preset time period corresponding to the occurrence frequency;
and determining the target service type by taking the occurrence frequency corresponding to the target time period as the occurrence frequency of the historical service type.
4. The method for selecting a network cell according to claim 2, wherein the historical service information further includes a location area corresponding to the occurrence frequency, and the determining the target service type according to the occurrence frequency of the historical service type includes:
acquiring the current position of the mobile terminal;
determining a target area corresponding to the current position according to the position area corresponding to the occurrence frequency;
and determining the target service type by taking the occurrence frequency corresponding to the target area as the occurrence frequency of the historical service type.
5. The method for selecting a network cell according to claim 1, wherein the selecting a target cell for network access according to the target service type comprises:
determining a plurality of target candidate cells corresponding to the target service type from the one or more accessible initial candidate cells according to the target service type;
and selecting one of the target candidate cells as the target cell for network access.
6. The method of selecting a network cell according to claim 5, wherein the selecting one of the plurality of target candidate cells as the target cell for network access comprises:
determining the wave beam frequency bands and the signal quality corresponding to the target candidate cells;
judging whether the wave beam frequency band is matched with a preset frequency band range or not, wherein the preset frequency band range comprises a first frequency band range and a second frequency band range;
when the wave beam frequency range is matched with the first frequency range, determining the target candidate cell with the best signal quality in the target candidate cells as the target cell for network access;
when the beam frequency range is matched with the second frequency range, acquiring a beam set of each target candidate cell, wherein the beam set comprises a plurality of beams with the best signal quality in the target candidate cell;
calculating a composite signal quality for each of the target candidate cells by a maximal ratio combining algorithm based on the plurality of beams for each of the target candidate cells;
and determining the target candidate cell with the best comprehensive signal quality as the target cell for network access.
7. The method of selecting a network cell according to claim 2, wherein said determining a target traffic type according to the frequency of occurrence of the historical traffic types comprises:
and taking the historical service type with the highest occurrence frequency as the target service type.
8. The method of network cell selection according to claim 1, wherein the method further comprises:
and when the target cell corresponding to the target service type does not exist, selecting one initial candidate cell for accessing according to the public land mobile network, the wireless access category and the frequency.
9. An apparatus for network cell selection, the apparatus comprising:
a broadcast message receiving module, configured to receive a cell broadcast message sent by a base station, where the cell broadcast message includes one or more accessible initial candidate cells;
a historical service information calling module, configured to call historical service information of the mobile terminal based on the cell broadcast message;
the target service type determining module is used for determining the target service type according to the historical service information;
and the cell selection module is used for selecting a target cell for network access according to the target service type, wherein the target cell is an initial candidate cell corresponding to the target service type in the one or more accessible initial candidate cells.
10. A mobile terminal, comprising:
one or more processors;
a storage device to store one or more computer programs,
the one or more computer programs, when executed by the one or more processors, cause the one or more processors to implement the method of network cell selection of any of claims 1-8.
11. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method for network cell selection according to any one of claims 1 to 8.
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