CN112333785B

CN112333785B - Communication method and device

Info

Publication number: CN112333785B
Application number: CN202011226123.9A
Authority: CN
Inventors: 刘洋; 张力方; 胡泽妍; 胡云; 冯毅
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2022-12-09
Anticipated expiration: 2040-11-05
Also published as: CN112333785A

Abstract

The invention discloses a communication method and a communication device, relates to the technical field of communication, and aims to solve the problem that part of terminals cannot communicate when moving out of the coverage range of a current operator. The method comprises the following steps: first, a first signal strength is obtained. Then, in the case where the first signal strength is lower than a first threshold value, the terminal activates the electronic card of the target operator. The first signal strength is the signal strength between the terminal and the network equipment of the current operator. The target operator is a different operator than the current operator of the terminal.

Description

Communication method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

Due to the limitation of factors such as cost and size, most internet of things terminals only support a cellular communication technology, and do not support other communication technologies such as bluetooth or wireless internet (WIFI). That is, most internet of things terminals can only communicate through a cellular network.

In the prior art, when a terminal moves out of the coverage of a current operator, the terminal cannot communicate through a cellular network of the current operator. At this time, terminals with other communication technologies can communicate through other communication technologies, and most terminals of the internet of things cannot communicate because only the cellular communication technology is supported, so that services of the internet of things are dropped.

Disclosure of Invention

The invention provides a communication method and a communication device, which are used for solving the problem that part of terminals cannot communicate when moving out of the coverage of the current operator.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, the present invention provides a communication method, including: first, a first signal strength is obtained. Then, in the case where the first signal strength is lower than a first threshold value, the terminal activates the electronic card of the target operator. The first signal strength is the signal strength between the terminal and the network equipment of the current operator. The target operator is a different operator than the current operator of the terminal.

It can be seen that, in the present invention, under the condition that the current operator of the terminal has no coverage or has poor coverage (i.e. the first signal strength is lower than the first threshold), the terminal activates the electronic card of the target operator, so that the terminal uses the electronic cards of other operators except the current operator to perform communication, thereby implementing coverage supplement and avoiding service drop of the terminal in the area where the current operator has no coverage. Therefore, the problem that part of terminals cannot communicate when moving out of the coverage range of the current operator is solved.

In a second aspect, the present invention provides a terminal, comprising: an acquisition unit and an activation unit. An obtaining unit, configured to obtain a first signal strength, where the first signal strength is a signal strength between the terminal and a network device of a current operator. And the activation unit is used for activating the electronic card of a target operator by the terminal under the condition that the first signal intensity is lower than a first threshold value, wherein the target operator is an operator different from the current operator of the terminal.

In a third aspect, the present invention provides a computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a terminal, cause the terminal to perform the communication method as described in the first aspect.

In a fourth aspect, the present invention provides a computer program product comprising instructions which, when run on a terminal, cause the terminal to perform the communication method according to the first aspect.

In a fifth aspect, the present invention provides a terminal, comprising: a processor and a memory, the memory for storing a program, the processor calling the program stored by the memory to perform the communication method as described in the first aspect.

Reference may be made to the detailed description of the first aspect and various implementations thereof; moreover, the beneficial effects of the second aspect to the fifth aspect and the various implementation manners thereof may refer to the beneficial effect analysis of the first aspect and the various implementation manners thereof, and are not described herein again.

These and other aspects of the invention will be more readily apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a remote configuration architecture of an eSIM card;

fig. 2 is a flowchart illustrating a remote eSIM card management method;

fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating a communication method according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a communication method according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

The terms "first" and "second" and the like in the description of the present invention and the drawings are used for distinguishing different objects or for distinguishing different processes for the same object, and are not used for describing a specific order of objects.

Furthermore, the terms "comprising" and "having" and any variations thereof as referred to in the description of the invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

It should be noted that in the description of the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or illustrations. Any embodiment or design described as "exemplary" or "such as" in an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion.

In the description of the present invention, the meaning of "a plurality" means two or more unless otherwise specified.

First, a description is given of a technique related to an embodiment of the present invention:

referring to fig. 1, fig. 1 illustrates a remote configuration architecture of an embedded subscriber identity module (eSIM) card, including a code number management system, an eSIM card service acceptance and download trigger server (trigger server for short), an eSIM card management platform, and a communication module of an eSIM card. The code number management system is a subsystem in the operator service system and is mainly responsible for allocating code numbers to the eSIM cards and managing the eSIM cards. The trigger server can trigger the internet of things device to complete downloading, activating, inquiring or deleting a user subscription data set (profile) of the eSIM card based on the eSIM card management platform when communicating with the internet of things device. The eSIM card management platform comprises an eSIM card data generation server and an eSIM card download server, and is responsible for generating, storing and managing profile data, executing profile download and other functions. The LPA is a software package in the communication module of the eSIM card, and includes a Local Profile Download (LPD) and a Local User Interface (LUI). In addition, CI is a certificate, and EUM denotes a vendor that produces eSIM cards.

As shown in fig. 1, the eSIM card management platform and the eSIM card may support ES8+ interface communication, the eSIM card management platform and the LPD may support ES9+ interface communication, the eSIM card and the LPD may support ES10b interface communication, and the eSIM card and the LUI may support ES10c interface communication.

The definitions of the ES8+ interface, the ES9+ interface, the ES10b interface, and the ES10c interface may refer to those defined in the prior art.

As shown in fig. 2, a flowchart of a remote management method for an eSIM card applied to the remote configuration architecture of an eSIM card shown in fig. 1 is provided.

For example, a user may first connect to an operator service system through an online or offline manner to perform service transaction, and after the service transaction is successful, the operator service system sends a request for generating a profile package (profile package) to an eSIM card management platform (corresponding to S11 in fig. 2), where the request for generating the profile package carries subscription information of an eSIM card during service transaction. Then, the eSIM card management platform generates a configuration file package (corresponding to S12 in fig. 2), and transmits a generate profile package response to the operator service system (corresponding to S13 in fig. 2). Finally, the carrier business system may synchronize subscription information of the eSIM card at the time of business transaction to the trigger server (corresponding to S14 in fig. 2). The service handling order information comprises an electronic identity (eID) and a service order associated with the eID, and the operation type of the Internet of things equipment on the profile, including downloading, activating, inquiring or deleting, is recorded in the service order.

It should be noted that fig. 2 only shows an implementation manner of remote management of an eSIM card in the prior art, and in practical applications, the implementation manner may also be implemented in other manners. For example, after receiving a profile package generation request sent by the operator service system, the eSIM card management platform may directly synchronize subscription information of the eSIM card to the trigger server (corresponding to S15 in fig. 2).

Before the internet of things device downloads, activates, queries or deletes the profile, the internet of things device first needs to execute an LPA instruction, that is, report the eID to the trigger server (corresponding to S21 in fig. 2), and then the trigger server queries whether a service order associated with the eID reported by the internet of things device is recorded (corresponding to S22 in fig. 2). When the trigger server queries the service order associated with the eID, the trigger server enables the Internet of things equipment to report identity authentication information and perform identity authentication with each other, after the identity authentication is passed, the trigger server sends a trigger operation request (corresponding to S23 in FIG. 2) to the Internet of things equipment, the trigger operation request carries an operation type for the profile, and after the Internet of things equipment receives the trigger operation request sent by the trigger server, the corresponding operation is completed according to the operation type for the profile carried in the operation request (corresponding to S24 in FIG. 2). Exemplarily, when the operation type is downloading of a profile, the internet of things device is connected to the eSIM card management platform through the trigger server, and a profile package associated with the eID of the internet of things device in the eSIM card management platform is downloaded (corresponding to S25 in fig. 2).

The embodiment of the invention provides a communication method, which is used for solving the problem that part of terminals cannot communicate when moving out of the coverage range of the current operator. The communication method may be performed by the terminal 100. Fig. 3 shows a hardware configuration of the terminal 100. As shown in fig. 3, the terminal 100 may include a processor 101, a communication line 102, a memory 103, and a communication interface 104.

The illustrated structure of the embodiment of the present invention does not limit the terminal 100. More or fewer components than shown may be included, or certain components may be combined, or certain components may be split, or a different arrangement of components may be used. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 101 may include one or more processing units, such as: the processor 101 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a memory, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a Neural-Network Processing Unit (NPU), etc. Wherein, the different processing units may be independent devices or may be integrated in one or more processors.

The controller may be a decision maker directing the various components of the terminal 100 to work in concert as instructed. Are the neural center and the command center of the terminal 100. The controller generates an operation control signal according to the instruction operation code and the time sequence signal to complete the control of instruction fetching and instruction execution.

A memory may also be provided in the processor 101 for storing instructions and data. In some embodiments, the memory in the processor is a cache memory that may hold instructions or data that have just been used or recycled by the processor. If the processor needs to reuse the instruction or data, it can be called directly from memory. Avoiding repeated accesses reduces the latency of the processor and thus increases the efficiency of the system.

In some embodiments, the processor 101 may include an interface. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc.

A communication line 102 for transmitting information between the processor 101 and the memory 103.

The memory 103 is used for storing and executing computer execution instructions and is controlled by the processor 101 to execute.

The memory 103 may be separate and coupled to the processor via the communication link 102. The memory 103 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM). It should be noted that the memory of the systems and apparatus described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

A communication interface 104 for communicating with other devices or a communication network. The communication network may be an ethernet, a Radio Access Network (RAN), or a Wireless Local Area Network (WLAN), a Bluetooth (BT), a Global Navigation Satellite System (GNSS), a Frequency Modulation (FM), a Near Field Communication (NFC), an Infrared (IR), or the like.

In a particular implementation. The terminal 100 may be a terminal or a chip in the terminal, and the specific form of the terminal 100 is not particularly limited in the embodiment of the present invention. The terminal includes, but is not limited to, a mobile phone, a tablet computer, a desktop computer, a laptop computer, a notebook computer, an Ultra Mobile Personal Computer (UMPC), a handheld computer, a netbook, a Personal Digital Assistant (PDA), a wearable electronic device, a virtual reality device, an internet of things terminal (e.g., a smart water meter, a smart electric meter), or other devices with transceiving functions.

The following describes a communication method provided by an embodiment of the present invention with reference to the terminal 100 shown in fig. 3.

As shown in fig. 4, a communication method provided in an embodiment of the present invention includes:

s401, the terminal 100 acquires the first signal strength.

Wherein the first signal strength is a signal strength between the terminal 100 and a network device of a current operator. The signal strength may be a Reference Signal Receiving Power (RSRP).

S402, under the condition that the first signal strength is lower than the first threshold, the terminal 100 activates the electronic card of the target operator.

Wherein the first threshold may be-105 decibel-milliwatts (dBm).

It should be noted that, when the terminal 100 is a multimode terminal, S402 may be: in the case where the first signal strength is lower than the first threshold value in all network systems that the terminal 100 can use, the terminal 100 activates the electronic card of the target operator. The first threshold values in different network systems may be the same or different, and this is not limited in this embodiment of the present invention.

For example, the terminal 100 may use global system for mobile communications (gsm) second generation mobile communication technology (2 th generation mobile network, 2g)/Time Division Synchronous Code Division Multiple Access (TDSCDMA) third generation mobile communication technology (3 th generation mobile network, 3 g)/Long Term evolution (Time Division Long Term evolution) TDLTE fourth generation mobile communication technology (4 th generation mobile network, 4 g). That is, the terminal 100 is a GSM/TDSCDMA/TDLTE tri-mode terminal. Under the condition that the first signal strength in the GSM/TDSCDMA/TDLTE network system is lower than a first threshold value, the terminal 100 activates an electronic card of a target operator.

It can be seen from the foregoing S402-S403 that, in the embodiment of the present invention, when the current operator of the terminal is uncovered or poorly covered (i.e., the first signal strength is lower than the first threshold), the terminal activates the electronic card of the target operator, so that the terminal uses the electronic cards of other operators other than the current operator to perform communication, thereby implementing coverage supplement and avoiding a service drop of the terminal in the uncovered area of the current operator. Therefore, the problem that part of the terminals cannot communicate when moving out of the coverage of the current operator is solved.

Referring to fig. 4, as shown in fig. 5, the communication method provided in the embodiment of the present invention may further include:

s403, when the terminal 100 is a single-mode terminal, the number of the neighboring cells of the current serving cell of the terminal 100 is less than or equal to a second threshold, and the terminal 100 is in time T ₀ The maximum speed is greater than a third threshold, the first signal strength is less than a fourth threshold within time t, the second signal strength is less than a threshold corresponding to the first target cell, and the terminal 100 downloads the electronic card of the target operator when the third signal strength is greater than or equal to a fifth threshold.

Wherein the second signal strength is a signal strength between the terminal 100 and the first target cell. The first target cell is any one of the first cells. The first cell is a neighbor cell of the current serving cell of the terminal 100.

The third signal strength is the signal strength between the terminal 100 and the second target cell. The second target cell is a cell with the highest signal strength between the terminal 100 and the second target cell, and the second cell is a cell of the target operator, and it should be noted that the terminal 100 can only measure the signal strength between the terminal 100 and the cell within the coverage of the cell. The second cell can also be understood as a cell in which the terminal 100 is present within the coverage area of the cell of the target operator.

T ₀ Is a positive integer, e.g. T ₀ It may be 600 seconds, i.e. 10 minutes.

t is a positive number. t = τ = P _size /b。P _size Is electricityDaughter card profile packet size in kilobytes (Kbits), b is the coverage quality RSRP ₀ In this case, in the case of the minimum resource unit, the data transmission rate that can be achieved by the terminal is in units of kilobits per second (kbps), and b may be obtained through simulation or estimated according to historical data, which is not limited in the embodiment of the present invention. RSRP ₀ The minimum RSRP threshold to achieve for the electronic card download is accomplished to maintain a stable rate. For example, RSRP in Narrowband (NB) systems ₀ May be-115 dBm. RSRP in LTE system ₀ Can be RSRP in a-105dBm, 5G system ₀ May be-100 dBm.

The number of neighbor cells of the current serving cell of the terminal 100 may be n _neighbour And (4) showing. The second threshold may be n ₀ And (4) showing. The second threshold satisfies the formula: n is ₀ ＝K*N _neighbour 。N _neighbour Is the average number of neighbors of the same type of cell as the current serving cell of terminal 100. For example, the terminal 100 currently serves a cell having a coverage in a dense urban area. Then N is _neighbour Is the average number of neighbors of a cell whose coverage is in a dense urban area. K is a correction coefficient, and the larger the value of K is, the larger n is ₀ The larger the value of K, the smaller the value of n ₀ The smaller. That is, the larger the value of K, the larger n _neighbour The easier is the smaller or equal to n ₀ The smaller the value of K, the more difficult it is to be equal to or less than n ₀ . K can take on a value of 1/3.

Terminal 100 at time T ₀ The maximum speed in the interior may be V _max And (4) showing. The third threshold may be 0. In the case where the third threshold value is 0, V _max Greater than the third threshold, indicating that terminal 100 is at time T ₀ Not in a stationary state but over-movement occurs.

The fourth threshold satisfies the formula: fourth threshold = RSRP ₀ +Loss(d，d’)。

d is a horizontal distance between the terminal and the base station, and can be obtained by calculating longitude and latitude or by estimating propagation delay, which is not limited in the embodiments of the present invention.

d' is the margin time for ensuring that the terminal finishes the electronic card downloading before entering the non-coverage area and reserves the downloading failure and re-downloading.

d' satisfies the formula: d' = α V _max *τ。

Where α is a correction factor, and is an integer greater than 1, α may be 3.

The calculation method of Loss (d, d') is related to the network system.

For example, loss (d, d ') = MPAL (d + d') -MPAL (d) in LTE network system.

MPAL is an LTE path loss calculation formula, taking a COST-231Hata model as an example:

MPAL(d)＝46.3+33.9lg(f _c )-13.82lg(h _te )-α(h _re )+(44.9-6.55lg(h _te ))lgd+C _M 。

MPAL(d+d’)＝46.3+33.9lg(f _c )-13.82lg(h _te )-α(h _re )+(44.9-6.55lg(h _te ))lg(d+d’)+C _M 。

α(h _re ) Satisfies the formula:

C _M satisfies the formula:

wherein f is _c Megahertz (MHz) is the operating frequency. h is _te And the meter (m) is the effective height of the base station. h is _re (m) is the effective height of the mobile station. Alpha (h) _re ) Correcting factors for the effective antenna of the receiving end; c _M Is a correction factor for the center of a large city.

For another example, loss (d, d') = PL in 5G network format _UMa-NLOS (d+d’)-PL _UMa-NLOS (d)。

Take a unified access (UMA) model as an example:

PL _UMa-NLOS ＝max(PL _UMa-LOS ,PL _U ′ _Ma-NLOS )for 10m≤d _2D ≤5km。

PL′ _UMa-NLOS ＝13.54+39.08log ₁₀ (d _3D )+20log ₁₀ (f _c )-0.6(h _UT -1.5)。

PL ₁ ＝32.4+20log ₁₀ (d _3D )+20log ₁₀ (f _c )。

PL ₂ ＝32.4+40log ₁₀ (d _3D )+20log ₁₀ (f _c )-10log ₁₀ ((d′ _BP ) ² +(h _BS -h _UT ) ² )。

wherein h is _BS Is the effective height of the base station, h _UT For the effective height of the mobile station, d _2D Horizontal distance of base station antenna from mobile station antenna, d _3D Is the linear distance between the base station antenna and the mobile station antenna. h is _BS ＝25m，1.5m≤h _UT ≤22.5m。

The third signal strength may be in RSRP _Amax And (4) showing. The third signal strength satisfies the formula: RSRP _Amax ＝max{RSRP _A1 ，RSRP _A2 ，……，RSRP _An }。RSRP _A1 Is the signal strength, RSRP, between the terminal 100 and the first cell of the target operator _An The signal strength between the terminal 100 and the nth cell of the target operator.

The fifth threshold may be RSRP _A0 And (4) showing. The fifth threshold satisfies the formula: RSRP _A0 ＝RSRP ₀ +H _A 。H _A Is the bias factor of the target operator, H _A Greater than or equal to 0.H _A Greater value of (3) RSRP _A0 The larger, H _A Smaller value of (3) RSRP _A0 The smaller. That is to say H _A Greater value of (3) RSRP _Amax The harder it is to be greater than or equal to RSRP _A0 ，H _A Smaller value of (3) RSRP _Amax The easier it is to be greater than or equal to RSRP _A0 。

It should be noted that, when the second signal strength is smaller than the threshold corresponding to the first target cell, since the first target cell is any one of the first cells, in this case, the signal strength between the terminal 100 and each first cell is smaller than the threshold corresponding to the first cell.

The threshold corresponding to the first target cell satisfies the formula: threshold = RSRP corresponding to the first target cell ₀ + the bias-performing coefficient corresponding to the first target cell.

The threshold corresponding to the first cell satisfies the formula: threshold = RSRP for the first cell ₀ + the bias-performing coefficient corresponding to the first cell. For example. Can be replaced by H _x The bias coefficient of the xth first cell (i.e. the xth neighbor cell of the current serving cell of the terminal 100) is represented, and the rest of the same principle can be used, for example, H ₁ Indicating the bias error coefficient of the 1 st first cell (i.e., the 1 st neighbor cell of the current serving cell of the terminal 100).

Wherein, the bias coefficient corresponding to the xth first cell (for short, the bias coefficient of the xth first cell) satisfies the formula:

for the same remaining reasons, for example, the bias coefficient of the 1 st first cell satisfies the formula:

the calculation method of the Loss (d, d ") may refer to the calculation method of the Loss (d, d'), and will not be described herein again.

d "satisfies the formula: d "= d'. V _avr /V _max 。V _avr Is the average value of the terminal moving speed in the past time tau.

R _nx Satisfies the formula: r _nx ＝D _nx /(n _nx -1)。n _nx The number of RSRP sampling points of the x-th first cell in the time t is obtained.

D _nx Satisfies the formula:

D _nxk satisfies the formula:

for example, if d _nx1 Greater than 0, then D _nx1 Is 1, if d _nx1 If < 0, then D _nx1 Is 0.

d _nx(n-1) ＝RSRP _nxn -RSRP _nx(n-1) For the same reason as above, e.g. d _nx1 ＝RSRP _nx2 -RSRP _nx1 ，d _nx2 ＝RSRP _nx3 -RSRP _nx2 . Wherein, the x first cell has n measurement sampling points within time tau, which are S respectively _nx1 ，S _nx2 ……S _nxn (S _nx1 Is earlier than S _nx2 ，S _nx2 Is earlier than S _nx3 The same applies to the rest). S _nx1 The corresponding RSRP value is RSRP _nx1 ，S _nx2 The corresponding RSRP value is RSRP _nx2 ，S _nxn The corresponding RSRP value is RSRP _nxn 。

S404, when the terminal 100 is a multi-mode terminal, the number of the adjacent cells of the current service cell of the terminal 100 is less than or equal to a second threshold value, and the terminal 100 is in time T ₀ The maximum speed in the terminal 100 is greater than a third threshold, the first signal strength is less than a fourth threshold within time t, the second signal strength is less than a threshold corresponding to the first target cell, the fourth signal strength is less than or equal to a threshold corresponding to the third target cell, and the electronic card of the target operator is downloaded by the terminal 100 when the third signal strength is greater than or equal to a fifth threshold.

Wherein the fourth signal strength is a signal strength between the terminal 100 and the third target cell. The third target cell is any one of the third cells. The third cell is a cell having the highest signal strength with the terminal 100 among the cells of each inter-system for a time t. The different system is a network system other than the network system currently used by the terminal 100 among the network systems that can be used by the terminal 100.

The signal strength between the nth third cell and the terminal 100 may be represented by Q _IRATnmax And (4) showing. For the same reason, the signal strength between the 1 st third cell and the terminal 100 may be represented by Q _IRAT1max And (4) showing. The signal strength between the 2 nd third cell and the terminal 100 may be represented by Q _IRAT2max 。

It should be noted that, when the signal strength between the terminal 100 and the third target cell is less than or equal to the threshold corresponding to the third target cell, since the third target cell is any one of the third cells, the signal strength between the terminal 100 and each third cell is less than or equal to the threshold corresponding to the third cell. And a threshold corresponding to the third target cell.

The threshold corresponding to the nth third cell may be Q _IRATn And (4) showing. For the same reason, for example, the threshold corresponding to the 1 st third cell may be Q _IRAT1 And (4) showing. The threshold corresponding to the 2 nd third cell may be Q _IRAT2 And (4) showing. The threshold corresponding to the third cell is the minimum coverage quality required by the terminal for normal communication under the network standard of the third cell (i.e. in the heterogeneous system of the third cell). For example, the network format of the nth third cell is TDSCDMA. Then the threshold corresponding to the nth third cell is the minimum coverage quality required by the normal communication of the terminal in the TDSCDMA network system.

For example, when the signal strength between the terminal 100 and the third target cell is less than or equal to the threshold corresponding to the third target cell, the terminal 100 is a GSM/TDSCDMA/TDLTE triple-mode terminal, and if the currently used network format of the terminal 100 is TDLTE, the GSM and TDSCDMA are different systems. The third cell is a cell (denoted as a third cell 1) with the highest signal strength between the GSM cell and the terminal 100 within time t, and a cell (denoted as a third cell 2) with the highest signal strength between the TDSCDMA cell and the terminal 100 within time t. The signal strength between the terminal 100 and the third cell 1 is less than or equal to the threshold corresponding to the GSM network system, and the signal strength between the terminal 100 and the third cell 2 is less than the threshold corresponding to the TDSCDMA network system.

Specifically, the terminal 100 downloads an electronic card of a target operator, including:

in the case where the first electronic card of the target operator exists in the terminal 100, the first electronic card is deleted, a non-first electronic card of the target operator is downloaded, and the state of the non-first electronic card is updated to the second state.

The first electronic card is in a first state, the first state is used for indicating that the electronic card is occupied, and the second state is used for indicating that the electronic card is downloaded but not occupied.

It should be noted that the presence of the first electronic card of the target operator in the terminal 100 indicates that the electronic card of the target operator existing in the terminal 100 has been occupied by other terminals, and since one electronic card can only be occupied by one terminal at the same time, the terminal 100 needs to download the electronic card of the target operator that is not occupied by other terminals, and mark the status of the electronic card as occupied to prevent other terminals from occupying the electronic card.

Optionally, when downloading the non-first electronic card of the target operator, the terminal 100 downloads the electronic card of the third state of the target operator under the condition that the electronic card of the third state of the target operator can be downloaded; downloading the electronic card of the second status of the target operator in case the electronic card of the third status of the target operator cannot be downloaded. The third state is used for indicating that the electronic card is not downloaded and is not occupied.

For example, the electronic card may be divided into three states as shown in table 1. Wherein 11 corresponds to the first state, i.e. the electronic card is occupied. 01 corresponds to the second status, i.e. the electronic card is downloaded but not occupied. 00 corresponds to the third status, i.e. the electronic card is not downloaded and is not occupied.

TABLE 1

Electronic card number	Affiliated operator	Electronic card status
			1	A	00
2	A	11
			……	……	……
n	A	01

In the case that the non-first electronic card of the target operator exists in the terminal 100, the state of the non-first electronic card is updated to the second state.

In the case where the electronic card of the target operator does not exist in the terminal 100, the non-first electronic card of the target operator is downloaded, and the state of the non-first electronic card is updated to the second state.

S405, when the first signal strength is greater than or equal to the sixth threshold value within the target time, updating the state of the electronic card of the target operator in the terminal 100 to be the second state.

The target time is a time T after the terminal 100 downloads the electronic card of the target operator, where T is a positive number.

T satisfies the formula: t = α τ V _max /V _min ’。

Wherein, V _min ' is the second smallest value of the terminal moving speed after entering the process, i.e. the minimum value of the speed after removing the sampling point with the speed of 0.

The sixth threshold may be RSRP ₀ 。

It should be noted that, when the first signal strength is greater than or equal to the sixth threshold in the target time, it indicates that the terminal 100 does not move out of the coverage of the current operator in a short time. In order to avoid that the terminal 100 occupies the electronic card of the target operator for a long time and to save code number resources, the state of the electronic card of the target operator in the terminal 100 may be set to the second state, so that other terminals may occupy the electronic card.

Optionally, after the terminal 100 activates the electronic card of the target operator, if the first signal strength is greater than the seventh threshold within the time T1, the electronic card of the target operator is deactivated, and the state of the electronic card of the target operator in the terminal 100 is updated to the second state.

The seventh threshold may be the same as or different from the sixth threshold. T1 may be the same as T or different from T. The embodiment of the present invention does not limit this.

It should be noted that after the terminal 100 activates the electronic card of the target operator, if the first signal strength is greater than the seventh threshold value within the time T1, it indicates that the terminal 100 has returned to the area with good coverage by the original operator. At this time, the electronic card of the target operator existing in the terminal 100 may be retrieved for standby or use by other terminals, so as to save code resources.

The scheme provided by the embodiment of the invention is mainly introduced from the perspective of a method. In order to implement the above functions, it includes a hardware structure and/or a software module for performing each function. Those of skill in the art will readily appreciate that the invention is capable of being implemented as hardware or a combination of hardware and computer software in connection with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The terminal 100 according to the above method example may perform functional module division, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only one logic function division, and another division manner may be available in actual implementation.

An embodiment of the present invention provides a terminal 100, configured to execute the foregoing communication method, and as shown in fig. 6, the terminal 100 includes: an acquisition unit 601 and an activation unit 602.

An obtaining unit 601 is configured to obtain a first signal strength, where the first signal strength is a signal strength between the terminal and a network device of a current operator. For example, in conjunction with fig. 4, the obtaining unit 601 may be configured to perform S401.

An activating unit 602, configured to activate, by the terminal, an electronic card of a target operator if the first signal strength is lower than a first threshold, where the target operator is an operator different from a current operator of the terminal. For example, in conjunction with fig. 4, the activation unit 602 may be used to perform S402.

As shown in fig. 6, the terminal 100 may further include: a first downloading unit 603, a second downloading unit 604 and an updating unit 605.

A first downloading unit 603, configured to use the terminal as a single-mode terminal, where the number of neighboring cells of the current serving cell of the terminal is less than or equal to a second threshold, and the terminal is in time T ₀ The maximum speed in the terminal is greater than a third threshold value, the first signal strength is less than a fourth threshold value within time t, the second signal strength is less than a threshold value corresponding to a first target cell, the electronic card of a target operator is downloaded by the terminal under the condition that the third signal strength is greater than or equal to a fifth threshold value, the second signal strength is the signal strength between the terminal and the first target cell, the first target cell is any one of the first cell, the first cell is a neighbor cell of a current service cell of the terminal, and the third signal strength is the signal strength between the terminal and the second target cellAnd the second target cell is the cell with the highest signal strength between the second cell and the terminal, the second cell is the cell of the target operator, and T ₀ Is a positive integer, and t is a positive number. For example, in conjunction with fig. 5, the first download unit 603 may be configured to perform S403.

A second downloading unit 604, configured to set the terminal as a multi-mode terminal, where the number of neighboring cells of the current serving cell of the terminal is less than or equal to a second threshold, and the terminal is in time T ₀ The maximum speed in the terminal is greater than a third threshold, the first signal strength is less than a fourth threshold in time t, the second signal strength is less than a threshold corresponding to a first target cell, the fourth signal strength is less than or equal to a threshold corresponding to a third target cell, and the third signal strength is greater than or equal to a fifth threshold. For example, in conjunction with fig. 5, the second downloading unit 604 may be configured to execute S404.

An updating unit 605, configured to update the state of the electronic card of the target operator in the terminal to be the second state when the first signal strength is greater than or equal to the sixth threshold in the target time, where T is a positive number in the time T after the terminal downloads the electronic card of the target operator in the target time. For example, in conjunction with fig. 5, the update unit 605 may be configured to perform S405.

The second downloading unit 604 is specifically configured to:

under the condition that a first electronic card of a target operator exists in the terminal, deleting the first electronic card, downloading a non-first electronic card of the target operator, and updating the state of the non-first electronic card to be a second state, wherein the first electronic card is an electronic card in a first state, the first state is used for indicating that the electronic card is occupied, and the second state is used for indicating that the electronic card is downloaded but not occupied.

And under the condition that the non-first electronic card of the target operator exists in the terminal, updating the state of the non-first electronic card to be a second state.

And under the condition that the electronic card of the target operator does not exist in the terminal, downloading the non-first electronic card of the target operator, and updating the state of the non-first electronic card to be in a second state.

Specifically, as shown in fig. 3 and 6. The acquisition unit 601, the activation unit 602, the first download unit 603, the second download unit 604, and the update unit 605 in fig. 6 call the program in the memory 103 via the communication line 102 by the processor 101 in fig. 3 to execute the above-described communication method.

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The processes or functions according to embodiments of the present invention occur, in whole or in part, when computer-executable instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided by the present invention, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some interfaces, indirect coupling or communication connection between devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method of communication, comprising:

acquiring first signal strength, wherein the first signal strength is the signal strength between a terminal and network equipment of a current operator;

activating, by the terminal, an electronic card of a target operator in the case where the first signal strength is lower than a first threshold value, the target operator being an operator different from a current operator of the terminal;

the communication method further comprises:

when the terminal is a single-mode terminal, the number of the adjacent cells of the current service cell of the terminal is less than or equal to a second threshold value, and the terminal is in the time T ₀ The maximum speed in the terminal is greater than a third threshold, the first signal strength is less than a fourth threshold within time T, the second signal strength is less than a threshold corresponding to a first target cell, the third signal strength is greater than or equal to a fifth threshold, the terminal downloads the electronic card of the target operator, the second signal strength is the signal strength between the terminal and the first target cell, the first target cell is any one of the first cells, the first cell is a neighboring cell of a current serving cell of the terminal, the third signal strength is the signal strength between the terminal and a second target cell, the second target cell is a cell with the highest signal strength between the second cell and the terminal, the second cell is a cell of the target operator, and T is a cell of the target operator ₀ Is positiveInteger, t is a positive number;

the second threshold satisfies the formula: n is a radical of an alkyl radical ₀ ＝K×N _neighbour (ii) a Wherein N is _neighbour The number of the adjacent cells of the current service cell of the terminal is represented, K is a correction coefficient, n ₀ Is a second threshold;

the fourth threshold satisfies the formula: fourth threshold = RSRP ₀ + Loss (d, d'), where RSRP ₀ D 'is the horizontal distance between the terminal and the base station, and d' is the margin time for ensuring that the terminal finishes the electronic card downloading before entering the non-coverage area and reserves the downloading failure and re-downloading;

d' satisfies the formula: d' = α V _max * τ; wherein alpha is a correction factor and is an integer greater than 1, V _max For the terminal at time T ₀ Maximum speed in, τ = P _size B, wherein P _size The electronic card profile packet size, b is the coverage quality RSRP ₀ The data transmission rate which can be achieved by the terminal under the condition of the minimum resource unit is obtained;

the threshold corresponding to the first cell satisfies the formula: threshold = RSRP for the first cell ₀ + a bias-performing coefficient corresponding to the first cell;

the fifth threshold satisfies the formula: RSRP _A0 ＝RSRP ₀ +H _A (ii) a Wherein H _A Is the bias coefficient of the target operator;

alternatively, the first and second electrodes may be,

when the terminal is a multi-mode terminal, the number of the adjacent cells of the current service cell of the terminal is less than or equal to the second threshold value, and the terminal is in the time T ₀ The maximum speed in the terminal is greater than the third threshold, the first signal strength is less than the fourth threshold within time t, the second signal strength is less than the threshold corresponding to the first target cell, the fourth signal strength is less than or equal to the threshold corresponding to the third target cell, the terminal downloads the electronic card of the target operator under the condition that the third signal strength is greater than or equal to the fifth threshold, and the fourth signal strength is the distance between the terminal and the third target cellThe third target cell is any one of the third cells, the third cell is a cell with the highest signal strength between each cell of the different systems and the terminal within time t, and the different systems are other network systems except the network system currently used by the terminal in the network systems that can be used by the terminal.

2. The communication method according to claim 1, wherein the terminal downloads the electronic card of the target operator, including:

under the condition that a first electronic card of the target operator exists in the terminal, deleting the first electronic card, downloading a non-first electronic card of the target operator, and updating the state of the non-first electronic card to be a second state, wherein the first electronic card is an electronic card in a first state, the first state is used for indicating that the electronic card is occupied by other terminals except the terminal, and the second state is used for indicating that the electronic card is downloaded but not occupied by other terminals except the terminal;

under the condition that the non-first electronic card of the target operator exists in the terminal, updating the state of the non-first electronic card to be the second state;

and downloading the non-first electronic card of the target operator under the condition that the electronic card of the target operator does not exist in the terminal, and updating the state of the non-first electronic card to be the second state.

3. The communication method according to claim 2, further comprising:

and when the first signal intensity is greater than or equal to a sixth threshold value in the target time, updating the state of the electronic card of the target operator in the terminal to be the electronic card of the deactivated target operator so that other terminals can occupy the electronic card, wherein the target time is the time T after the electronic card of the target operator is downloaded by the terminal, and the T is a positive number.

4. A terminal, comprising: an acquisition unit and an activation unit;

the acquiring unit is configured to acquire a first signal strength, where the first signal strength is a signal strength between the terminal and a network device of a current operator;

the activation unit is used for activating an electronic card of a target operator by the terminal under the condition that the first signal strength is lower than a first threshold value, wherein the target operator is an operator different from the current operator of the terminal;

the terminal further comprises: a first downloading unit;

the first downloading unit is configured to determine that the terminal is a single-mode terminal, the number of neighboring cells of a current serving cell of the terminal is less than or equal to a second threshold, and the terminal is in time T ₀ The maximum speed in the terminal is greater than a third threshold, the first signal strength is less than a fourth threshold within time T, the second signal strength is less than a threshold corresponding to a first target cell, the third signal strength is greater than or equal to a fifth threshold, the terminal downloads the electronic card of the target operator, the second signal strength is the signal strength between the terminal and the first target cell, the first target cell is any one of the first cells, the first cell is a neighboring cell of a current serving cell of the terminal, the third signal strength is the signal strength between the terminal and a second target cell, the second target cell is a cell with the highest signal strength between the second cell and the terminal, the second cell is a cell of the target operator, and T is a cell of the target operator ₀ Is a positive integer, t is a positive number;

the second threshold satisfies the formula: n is ₀ ＝K×N _neighbour (ii) a Wherein N is _neighbour The number of the adjacent cells of the current service cell of the terminal is represented, K is a correction coefficient, n ₀ Is a second threshold value;

the fourth threshold satisfies the formula: fourth threshold = RSRP ₀ + Loss (d, d'), where RSRP ₀ D is the minimum RSRP threshold to be reached for finishing the electronic card downloading in order to keep a stable speed, and d is the terminalD' is the horizontal distance from the base station, and is used for ensuring that the terminal finishes electronic card downloading before entering the non-coverage area and reserving the margin time for downloading the electronic card again after downloading failure;

d' satisfies the formula: d' = α V _max * τ; wherein alpha is a correction factor and is an integer greater than 1, V _max For the terminal at time T ₀ Inner maximum velocity, τ = P _size B wherein P is _size The electronic card profile packet size, b is the coverage quality RSRP ₀ The data transmission rate which can be achieved by the terminal under the condition of the minimum resource unit is obtained;

the threshold corresponding to the first cell satisfies the formula: threshold = RSRP corresponding to the first cell ₀ + a bias-performing coefficient corresponding to the first cell;

the terminal further comprises: a second download unit;

the second downloading unit is further configured to set the terminal as a multi-mode terminal, where the number of neighboring cells of the current serving cell of the terminal is less than or equal to the second threshold, and the terminal is set at time T ₀ The maximum speed in the terminal is greater than the third threshold, the first signal strengths are all less than the fourth threshold within time t, the second signal strength is less than the threshold corresponding to the first target cell, the fourth signal strength is less than or equal to the threshold corresponding to the third target cell, the terminal downloads the electronic card of the target operator under the condition that the third signal strength is greater than or equal to the fifth threshold, the fourth signal strength is the signal strength between the terminal and the third target cell, the third target cell is any one of the third cells, the third cell is the cell with the highest signal strength between each cell of the different systems and the terminal within time t, and the different systems are other network systems except the network system currently used by the terminal in the network systems which can be used by the terminal.

5. The terminal according to claim 4, wherein the second downloading unit is specifically configured to:

under the condition that a non-first electronic card of the target operator exists in the terminal, updating the state of the non-first electronic card to be the second state;

and under the condition that the electronic card of the target operator does not exist in the terminal, downloading a non-first electronic card of the target operator, and updating the state of the non-first electronic card to be the second state.

6. The terminal of claim 5, further comprising: an updating unit;

the updating unit is used for updating the state of the electronic card of the target operator in the terminal to be the electronic card of the deactivated target operator when the first signal strength is greater than or equal to a sixth threshold value in the target time, so that other terminals can occupy the electronic card, and the target time is the time T after the terminal downloads the electronic card of the target operator, wherein the T is a positive number.

7. A terminal, characterized in that the terminal comprises: one or more processors, and a memory;

the memory is coupled with the one or more processors; the memory is configured to store computer program code comprising instructions which, when executed by the one or more processors, cause the terminal to perform the communication method of any of claims 1-3.

8. A computer-readable storage medium comprising instructions that, when executed on a terminal, cause the terminal to perform the communication method of any one of claims 1-3.