CN106658562A - Network access way selecting method and device - Google Patents

Network access way selecting method and device Download PDF

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Publication number
CN106658562A
CN106658562A CN201611019435.6A CN201611019435A CN106658562A CN 106658562 A CN106658562 A CN 106658562A CN 201611019435 A CN201611019435 A CN 201611019435A CN 106658562 A CN106658562 A CN 106658562A
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access
access mode
network
evaluation parameter
parameter
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CN106658562B (en
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蒙浩程
高文
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Shenzhen Youke Yunlian Technology Co Ltd
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Shenzhen Youke Yunlian Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The invention is suitable for a field of communication technology and provides a network access way selecting method and device. The method includes steps of obtaining at least one feature parameter of N user ID cards in a terminal, wherein any one among the N user ID cards can be connected to M communication networks; based on at least one feature parameters, utilizing a first preset algorithm to select out a first access method so as to enable the first access evaluation parameter of the first access way to be the optimal first access evaluation parameter, wherein the first evaluation parameter is based on feature parameters and the first access way is utilizing user ID card n1 among the N user ID card to connect into a communication network m1 in the M communication networks. According to the invention, the optimal ID card is selected out automatically through the preset algorithm to connect into the optimal network. Besides, access cost is also considered, so that a problem in satisfaction of access quality and cost is solved effectively when selecting user ID cards I the prior art.

Description

Network access mode selection method and device
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a network access mode selection method and device.
Background
With the continuous development of scientific technology, an intelligent terminal gradually becomes an indispensable part of people's life, and for the needs of people's life and work, a situation that a single terminal device is equipped with multiple (Subscriber identity module, SIM) Subscriber Identity Modules (SIM) at the same time often occurs, but the single terminal device can only use one SIM card to access a certain operator network for work at the same time, so that under the situation that the terminal is in a plurality of available networks, the terminal device first needs to select the SIM card and the accessed operator network before accessing the network.
At present, when a terminal selects an SIM card and an access network, an access mode with the strongest signal or the lowest tariff is often selected by a manual selection mode, but in a practical situation, the tariff is the highest in the access mode with the strongest signal, and the signal is the weakest in the condition of the lowest tariff, so that the access mode selected by the terminal is not ideal.
Disclosure of Invention
The embodiment of the invention provides a network access mode selection method and a network access mode selection device, and aims to solve the problem that in the prior art, when a user identity identification card is selected, both access quality and charge rate are difficult to take into account.
The embodiment of the invention is realized in such a way that a network access mode selection method comprises the following steps:
acquiring at least one characteristic parameter of N user identity identification cards in a terminal, wherein any one of the N user identity identification cards can be accessed to M communication networks;
based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 of the M communication networks by using a user identification card N1 of the N user identification cards.
The embodiment of the present invention further provides a network access mode selection device, including:
a characteristic parameter obtaining unit, configured to obtain at least one characteristic parameter of N user identification cards in a terminal, where any one of the N user identification cards is accessible to M communication networks;
a first access mode selecting unit, configured to select, based on the at least one feature parameter, a first access mode by using a first preset algorithm, so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, where the first access evaluation parameter is obtained based on the feature parameter, and the first access mode is to access a communication network M1 of the M communication networks by using a user identification card N1 of the N user identification cards.
In the embodiment of the invention, at least one characteristic parameter of N pieces of user identity identification cards in a terminal is obtained, any one of the N pieces of user identity identification cards can access M communication networks, based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 in the M communication networks by using a user identity identification card N1 in the N pieces of user identity identification cards. The invention aims to automatically select the optimal identification card to access the best network through the prior use condition, the current network environment and the tariff table, and can simultaneously give consideration to the access cost, thereby effectively solving the problem that the access quality and the tariff are difficult to be taken into consideration when the user identification card is selected in the prior art.
Drawings
Fig. 1 is a flowchart illustrating an implementation of a network access method selection method according to an embodiment of the present invention;
fig. 2 is a function curve diagram of a network access mode selection algorithm according to an embodiment of the present invention;
fig. 3 is a flowchart of another method for selecting a network access manner according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating an implementation of another network access method selection method according to an embodiment of the present invention;
fig. 5 is a function graph of another network access mode selection algorithm according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a network access mode selection apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another network access mode selection apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another network access mode selection apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiment of the invention, at least one characteristic parameter of N pieces of user identity identification cards in a terminal is obtained, any one of the N pieces of user identity identification cards can access M communication networks, based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 in the M communication networks by using a user identity identification card N1 in the N pieces of user identity identification cards. The invention aims to automatically select the optimal identification card to access the best network through the prior use condition, the current network environment and the tariff table, and can simultaneously give consideration to the access cost, thereby effectively solving the problem that the access quality and the tariff are difficult to be taken into consideration when the user identification card is selected in the prior art.
The first embodiment,
Fig. 1 shows an implementation flow of a network access mode selection method provided in an embodiment of the present invention, which is detailed as follows:
in step S110, any one of N user identification cards in the terminal may access M communication networks by obtaining at least one characteristic parameter of the N user identification cards.
In an embodiment of the present invention, the characteristic parameter includes at least one of network information, rate information, history, and location information.
The Network information includes an MNC (Mobile Network Code) for identifying a Mobile Network and a Network system, such as 2G, 3G, and 4G, to which the Mobile client belongs, and information such as wireless signal strength. The rate information is the communication cost that each operator needs to consume under different network systems. The history record indicates the previous usage of the subscriber identity card in the communication terminal, including the access operator, the network used, and the like, and the location information may be located through a Mobile network, for example, the location information of the current communication terminal may be determined according to a Country Code (MCC), a Location Area Code (LAC), and a cell ID, and the current location information may also be determined through a GPS positioning system.
In the embodiment of the present invention, the obtaining manner of the characteristic parameter of the user identification card may obtain the characteristic parameter in real time, or obtain the characteristic parameter at regular time, or obtain the characteristic parameter once every time the current geographical location of the terminal changes, for example, obtain the characteristic parameter once every 30 seconds, or be triggered by a condition of the communication terminal, for example, triggered by location update of the communication terminal, and the specific obtaining process may obtain the characteristic parameter in the above manner.
In the embodiment of the present invention, the user identification card is a virtual user identification card, an entity user identification card or a combination thereof, the entity user identification card is a user identification card that is embedded or inserted in the communication terminal, the virtual user identification card is a user identification card that is not embedded or embedded in the communication terminal in advance and needs to be downloaded from a server, the virtual user identification card is stored in the server, and the virtual user identification card includes SIM card data.
In the embodiment of the present invention, when N subscriber identity cards are included in the communication terminal, each subscriber identity card may correspond to a different operator network, and therefore each subscriber identity card may access M networks, for example, card N1 may access networks M1, M2, and the like.
In step S120, based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 of the M communication networks by using a user identification card N1 of the N user identification cards.
In the embodiment of the invention, N user identification cards are arranged in the communication terminal, the first access evaluation parameter of each user identification card is obtained through calculation of a first preset algorithm according to the characteristic parameter of each user identification card, and a first access mode with the optimal first access evaluation parameter is screened from all the obtained first access evaluation parameters, wherein the first access mode comprises the user identification card and a network corresponding to the user identification card.
In the embodiment of the invention, assuming that there are N total identity identification (SIM) cards currently, M networks can be searched. The combination of M × n access schemes is represented by a weight matrix M, as shown in table one below.
Watch 1
m1 m2 … mM
n1 nm1 nm12 … nm1M
n2 nm2 nm22 … nm2M
… … … … …
nN nNm1 nNm2 … nNmM
As shown in the above table, where N represents the number of SIM cards; m denotes, number of operator networks; nm then represents the combination of the SIM card and the accessible operator network.
In the embodiment of the present invention, it is assumed that the first preset algorithm is expressed by the following formula:
wherein g (z) is the first access evaluation parameter, the algorithm formula is only one of the implementation methods of the present invention, and the specific formula can be adjusted according to the actual situation, which is not limited in the present invention.
g (z) is a typical sigmoid function, and due to the nature of its simple increment and inverse function simple increment, variables can be mapped between 0 and 1, which is used in this scheme to indicate the score that the predicted seed card j can successfully access to network i.
Wherein z is a numerical value obtained by adding a product of the weight value of the characteristic parameter and the corresponding communication vector of the characteristic parameter, and is as follows:
Z(i,j)＝(θ(j))T(X(i))
the expansion form is as follows:
wherein, theta(j)Parameter vector, X, representing seed card j(i)A feature vector representing network i, where X(i)The feature selection of (c) may be:is 1, to take care of the constant term θ in the first preset algorithm, which is fixed, is always 1.Is an RSSI, indicating the strength of the signal,is denoted by Rat, network type,the Rate is represented as the opposite number of the charge Rate, wherein other characteristic parameter items can be added according to the measured conditions, such asMay be the current geographic location of the seed card.
For example, taking the first access method as an example, the characteristic parameters are the characteristic parameters of the subscriber identity card in the first access method, such as the network signal strength and the rate, and the network signal strength covered by the subscriber identity card in the current first entry methodIs 10, the opposite number of the charge rateIs-10, thenWherein,the value is 1,The value is 2,If the value is 2, then Z (i, j) is 1, andin one step, the method comprises the following steps of,
the first access evaluation parameter is 0.72.
According to the above formula, a calculation formula for predicting the first access evaluation parameter of the seed card j that can be successfully accessed to the network i is used to make a corresponding function curve, see fig. 2:
as shown in fig. 2, the horizontal axis represents a parameter Z, the vertical axis represents g (Z), and g (Z) is continuously increased with the increase of the parameter Z, when the parameter Z is increased, the score of the seed card j successfully accessing to the network i is continuously increased, that is, when the signal strength network system of the seed card j is good and the cost is low, the score of the seed card j successfully accessing is high, and the probability of the seed card j successfully accessing is high.
In the embodiment of the present invention, the first access evaluation parameter is an evaluation parameter of an access mode of each user identification card accessing to a network, which is obtained by comprehensively considering at least one characteristic parameter of each user identification card, and for example, the first access evaluation parameter may be a priority of a network condition under the condition of the same rate, for example, if the network condition of the identification card a is normal communication but limited in speed or small in traffic generation, the network condition of the identification card B is fast, and the network condition of the identification card C is normal communication and fast, the first access evaluation parameter is that the identification card a < the identification card B < the identification card C, and further, if the network conditions are the same, the identification card a needs to consume 0.3 yuan per minute, the identification card B needs to consume 0.4 yuan per minute, and the identification card C needs to consume 0.5 yuan per minute, then, the first access evaluation parameter is id a > id B > id C.
In the embodiment of the invention, at least one characteristic parameter of N pieces of user identity identification cards in a terminal is obtained, any one of the N pieces of user identity identification cards can access M communication networks, based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 in the M communication networks by using a user identity identification card N1 in the N pieces of user identity identification cards. The invention aims to automatically select the optimal identification card to access the best network through the prior use condition, the current network environment and the tariff table, and can simultaneously give consideration to the access cost, thereby effectively solving the problem that the access quality and the tariff are difficult to be taken into consideration when the user identification card is selected in the prior art.
Example II,
Fig. 3 shows an implementation flow of another network access method provided in the embodiment of the present invention, which is similar to the first embodiment, except that after the first preset algorithm is used to select the first access method, the method further includes:
in step S210, a second preset algorithm is used to adjust the first access manner to obtain a second access manner, so as to minimize an error between a first access evaluation parameter and a second access evaluation parameter of the second access manner at the current time and in the current communication network, where the second access manner is to access a communication network M2 of the M communication networks by using a user identification card N2 of the N user identification cards.
In the embodiment of the invention, after the first access mode is obtained through the first preset algorithm, the user identification card in the first access mode is tried to be accessed to the corresponding network through the first access mode, at the moment, the second access evaluation parameter of the first access mode is obtained through the acquisition algorithm of the second access evaluation parameter, and when the second access evaluation parameter of the first access mode is more than or equal to the threshold value of the preset second access mode, the first access mode access network can be obtained through the first preset algorithm.
Further, when a second access evaluation parameter of the first access mode is smaller than a preset threshold of the second access mode, adjusting the obtained first preset algorithm of the first access mode through a second preset algorithm so as to minimize an error between the first access evaluation parameter and the second access evaluation parameter of the second access mode at the current time and in the current communication network, specifically, obtaining the second access mode through the first preset algorithm again by adjusting weight values of all characteristic parameters, and attempting to access the network through the second mode.
In this embodiment of the present invention, the first access evaluation parameter is represented by H (i, j), and the second access evaluation parameter is represented by Y (i, j), where the second preset algorithm is obtained by a difference between the first access evaluation parameter and the second access evaluation parameter, as follows:
H(i，j)＝g(z)，
the formula is a cost function and is used for describing the error between the first access evaluation parameter and the second access evaluation parameter of the same access mode.
The cost function is further optimized to minimize the value of the cost function, which can be obtained by the optimization algorithm as follows:
further, the above formula is transformed by a gradient approximation algorithm, so that the following formula can be obtained:
the above equation can be expressed as changing the vector parameter θ to a direction that reduces the prediction error at each iteration until the error is minimal. Where α is the learning rate (measure the amount of change per time), λ is the regularization auxiliary parameter, and x (i) represents the feature vector of network i.
Further, a minimum error value may be set, and when the prediction error value is known to be less than or equal to the minimum error value by changing the vector parameter θ in a direction of reducing the prediction error, the value of θ at that time may be obtained.
In the embodiment of the invention, the communication terminal can define the weight of each characteristic parameter in advance during calculation, and the weighted value of each characteristic parameter is stored, when the error between the actual communication score and the predicted communication score is too large, the weights of the various characteristic parameters in the preset algorithm can be adjusted to ensure that a relatively stable value is finally reached, and at this time, the error between the first access evaluation parameter and the second access evaluation parameter of the first access mode obtained by the first preset algorithm is minimum, since the second access evaluation parameter represents the actual score that the first access mode can successfully access the network, the second access evaluation parameter, therefore, when the error between the second access evaluation parameter and the first access evaluation parameter is the minimum, it is indicated that the first access mode obtained by the first preset algorithm is the optimal first access mode, and the probability of successful access is higher.
In the embodiment of the invention, at least one characteristic parameter of N pieces of user identity identification cards in a terminal is obtained, any one of the N pieces of user identity identification cards can access M communication networks, based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 in the M communication networks by using a user identity identification card N1 in the N pieces of user identity identification cards. The invention aims to automatically select the optimal identification card to access the best network through the prior use condition, the current network environment and the tariff table, and can simultaneously give consideration to the access cost, thereby effectively solving the problem that the access quality and the tariff are difficult to be taken into consideration when the user identification card is selected in the prior art.
Example III,
Fig. 4 is a flowchart illustrating an implementation of a further network access method selection method according to an embodiment of the present invention, which is similar to the first embodiment, except that before the first access method is adjusted by using a second preset algorithm to obtain a second access method, the method further includes:
in step S310, a second access evaluation parameter of the first access mode is obtained.
In the embodiment of the present invention, the second access evaluation parameter y (i, j) may be represented by the following formula, and it can be understood that the following formula is only one of the implementation methods of the present invention, and the specific formula may be adjusted according to actual situations, which is not limited by the present invention.
And if the access is successful or not finally {0, 1}, T is the time consumed when the network is successfully accessed, the larger T is, the smaller the score Y value is, a, b and c are constants, and the constant c is used for adjusting the gradient (change rate) of the Y value along with the change of the T value.
Calculating by the formula, finally, describing the score of the final access by Y (i, j), and adopting simple judgment, for example, a binary method, wherein the value of the event with successful access is 1, the value of the event with failed access is 0, and whether the seed card is successfully accessed can be known by judging the value of the event with successful access, but the consumed time length also becomes one of the evaluation parameters for the condition of successful access, so that the modified value model is as follows:
it can be understood as "normalized final score" (lowest score 0, highest score 1), which may reflect the "satisfaction" of the access to some extent.
For example, when the optimal access mode obtained through the first preset algorithm is the first access mode, if the access is performed through the first access mode, the consumed time period T is 1 minute, and the constant c takes a value of 1, then the operation is performed according to the first preset algorithmIn this case, if the network is successfully accessed in the first mode, Y (i, j) is equal to a +0.5b, and if the network fails to be accessed, Y (i, j) is equal to 0, where the values of a and b may be set according to actual conditions, for example, if a is equal to 0.5 and b is equal to 0.5, Y (i, j) is equal to 0.5+0.5 is equal to 0.75, or if a is equal to 0.6 and b is equal to 0.4, Y (i, j) is equal to 0.6+0.4 is equal to 0.5 is equal to 0.8.
According to the value model, a function curve diagram is made, see fig. 5:
as can be seen from fig. 5, the horizontal axis represents the time consumed when accessing the network by the calculated access method, and the vertical axis represents the second access evaluation parameter Y (i, j) in minutes, when the value of Y is greater than or equal to a, it represents that the seed card can be accessed, and the smaller the value of Y, the lower the probability of being accessed is, where b is 1-a, which is to ensure the "margin" between 0 and 1;
further, in the present invention,is the right half of the sigmoid function after it has flipped about the X-axis, sinceTime cannot take a negative value, when T ∈ (0, ∞), y ∈ (0, 0.5), and therefore molecule 2 extends its range by a factor of 2.
In this formula, when T is infinitely close to 0, the y value is infinitely close to 1(1 represents a full score), and as T increases, the y value will approach a.
In the embodiment of the present invention, the communication score of the user identification card is obtained by calculating the characteristic parameter of the user identification card through the above calculation formula, and since the prediction formula uses a sigmoid function, the obtained value ranges from 0 to 1, and the probability of successful access increases with the increase of the score, for example, in an access network a of the user identification card a, the obtained second access evaluation parameter is 0.3, and the preset second access evaluation parameter is 0.7, at this time, since the second access evaluation parameter is smaller than the preset evaluation parameter, a second access mode is obtained through a second preset algorithm, and if the user identification card a accesses a network b, the obtained second access evaluation parameter is larger than the preset evaluation parameter, the network is accessed through the second mode.
In step S320, it is determined whether the second access evaluation parameter of the first access manner is greater than or equal to a preset second access evaluation parameter.
In the embodiment of the present invention, as can be known from the above-mentioned acquisition formula of the second access evaluation parameter, when a value of Y is greater than or equal to a, it indicates that the seed card can be accessed, and the smaller the value of Y is, the lower the probability that the seed card can be accessed is, where b is 1-a, which is to ensure that the total score is "margin" between 0 and 1.
Therefore, only when the value of the second access evaluation parameter Y (i, j) is greater than or equal to a, the probability that the first access mode can be successfully accessed is higher, so that the preset value of the second access evaluation parameter can be any value between a and 1, which can be set according to the actual situation, and the invention is not limited.
In step S330, if the second access evaluation parameter of the first access method is greater than or equal to a preset second access evaluation parameter, the first access method is used to access a communication network.
In the embodiment of the present invention, when the second access evaluation parameter of the first access mode is obtained to be greater than or equal to the preset second access evaluation parameter, which indicates that the probability that the first access mode can successfully access the network is higher, for example, the second access evaluation parameter of the first access mode is 0.9, the preset second access evaluation parameter is 0.7, and 0.9 is greater than 0.7, at this time, the subscriber identity card in the first access mode is used to access the network corresponding to the first subscriber identity card in the first access mode.
In the embodiment of the invention, at least one characteristic parameter of N pieces of user identity identification cards in a terminal is obtained, any one of the N pieces of user identity identification cards can access M communication networks, based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 in the M communication networks by using a user identity identification card N1 in the N pieces of user identity identification cards. The invention aims to automatically select the optimal identification card to access the best network through the prior use condition, the current network environment and the tariff table, and can simultaneously give consideration to the access cost, thereby effectively solving the problem that the access quality and the tariff are difficult to be taken into consideration when the user identification card is selected in the prior art.
Example four,
Fig. 6 shows a structure 400 of a network access mode selection apparatus according to an embodiment of the present invention, and only the relevant parts of the present invention are shown for convenience of description.
The apparatus 400 comprises: a characteristic parameter obtaining unit 41 and a first access mode selecting unit 42.
The characteristic parameter obtaining unit 41 is configured to obtain at least one characteristic parameter of N user identification cards in the terminal, where any one of the N user identification cards may access M communication networks.
In an embodiment of the present invention, the characteristic parameter includes at least one of network information, rate information, history, and location information.
The Network information includes an MNC (Mobile Network Code) for identifying a Mobile Network and a Network system, such as 2G, 3G, and 4G, to which the Mobile client belongs, and information such as wireless signal strength. The rate information is the communication cost that each operator needs to consume under different network systems. The history record indicates the previous usage of the subscriber identity card in the communication terminal, including the access operator, the network used, and the like, and the location information may be located through a Mobile network, for example, the location information of the current communication terminal may be determined according to a Country Code (MCC), a Location Area Code (LAC), and a cell ID, and the current location information may also be determined through a GPS positioning system.
In the embodiment of the present invention, the obtaining manner of the characteristic parameter of the user identification card may obtain the characteristic parameter in real time, or obtain the characteristic parameter at regular time, or obtain the characteristic parameter once every time the current geographical location of the terminal changes, for example, obtain the characteristic parameter once every 30 seconds, or be triggered by a condition of the communication terminal, for example, triggered by location update of the communication terminal, and the specific obtaining process may obtain the characteristic parameter in the above manner.
In the embodiment of the present invention, the user identification card is a virtual user identification card, an entity user identification card or a combination thereof, the entity user identification card is a user identification card that is embedded or inserted in the communication terminal, the virtual user identification card is a user identification card that is not embedded or embedded in the communication terminal in advance and needs to be downloaded from a server, the virtual user identification card is stored in the server, and the virtual user identification card includes user identification card data.
In the embodiment of the present invention, when N subscriber identity cards are included in the communication terminal, each subscriber identity card may correspond to a different operator network, and therefore each subscriber identity card may access M networks, for example, card N1 may access networks M1, M2, and the like.
A first access manner selecting unit 42, configured to select, based on the at least one feature parameter, a first access manner by using a first preset algorithm, so that a first access evaluation parameter of the first access manner is an optimal first access evaluation parameter, where the first access evaluation parameter is obtained based on the feature parameter, and the first access manner is to access, by using a subscriber identity module card N1 of the N subscriber identity module cards, a communication network M1 of the M communication networks.
In the embodiment of the invention, N user identification cards are arranged in the communication terminal, the first access evaluation parameter of each user identification card is obtained through calculation of a first preset algorithm according to the characteristic parameter of each user identification card, and a first access mode with the optimal first access evaluation parameter is screened from all the obtained first access evaluation parameters, wherein the first access mode comprises the user identification card and a network corresponding to the user identification card.
In the embodiment of the invention, assuming that there are N total identity identification (SIM) cards currently, M networks can be searched. The combination of M × n access schemes is represented by a weight matrix M, as shown in table one below.
Watch 1
As shown in the above table, where N represents the number of SIM cards; m denotes, number of operator networks; nm then represents the combination of the SIM card and the accessible operator network.
In the embodiment of the present invention, it is assumed that the first preset algorithm is expressed by the following formula:
wherein g (z) is the first access evaluation parameter, it can be understood that the algorithm formula is only one of the implementation methods of the present invention, and the specific formula can be adjusted according to the actual situation, which is not limited in the present invention.
g (z) is a typical sigmoid function, and due to the nature of its simple increment and inverse function simple increment, variables can be mapped between 0 and 1, which is used in this scheme to indicate the score that the predicted seed card j can successfully access to network i.
Wherein z is a numerical value obtained by adding a product of the weight value of the characteristic parameter and the corresponding communication vector of the characteristic parameter, and is as follows:
Z(i,j)＝(θ(j))T(X(i))
the expansion form is as follows:
wherein, theta(j)Parameter vector, X, representing seed card j(i)A feature vector representing network i, where X(i)Feature selection ofCan be as follows:is 1, to take care of the constant term θ in the first preset algorithm, which is fixed, is always 1.Is an RSSI, indicating the strength of the signal,is denoted by Rat, network type,the Rate is represented as the opposite number of the charge Rate, wherein other characteristic parameter items can be added according to the measured conditions, such asMay be the current geographic location of the seed card.
For example, taking the first access method as an example, the characteristic parameters are the characteristic parameters of the subscriber identity card in the first access method, such as the network signal strength and the rate, and the network signal strength covered by the subscriber identity card in the current first entry methodIs 10, the opposite number of the charge rateIs-10, thenWherein,the value is 1,The value is 2,When the value is 2, Z (i, j) becomes 1, and further,
the first access evaluation parameter is 0.72.
According to the above formula, a calculation formula for predicting the first access evaluation parameter of the seed card j that can be successfully accessed to the network i is used to make a corresponding function curve, see fig. 2:
as shown in fig. 2, the horizontal axis represents a parameter Z, the vertical axis represents g (Z), and g (Z) is continuously increased with the increase of the parameter Z, when the parameter Z is increased, the score of the seed card j successfully accessing to the network i is continuously increased, that is, when the signal strength network system of the seed card j is good and the cost is low, the score of the seed card j successfully accessing is high, and the probability of the seed card j successfully accessing is high.
In the embodiment of the present invention, the first access evaluation parameter is an evaluation parameter of an access mode of each user identification card accessing to a network, which is obtained by comprehensively considering at least one characteristic parameter of each user identification card, and for example, the first access evaluation parameter may be a priority of a network condition under the condition of the same rate, for example, if the network condition of the identification card a is normal communication but limited in speed or small in traffic generation, the network condition of the identification card B is fast, and the network condition of the identification card C is normal communication and fast, the first access evaluation parameter is that the identification card a < the identification card B < the identification card C, and further, if the network conditions are the same, the identification card a needs to consume 0.3 yuan per minute, the identification card B needs to consume 0.4 yuan per minute, and the identification card C needs to consume 0.5 yuan per minute, then, the first access evaluation parameter is id a > id B > id C.
In the embodiment of the invention, at least one characteristic parameter of N pieces of user identity identification cards in a terminal is obtained, any one of the N pieces of user identity identification cards can access M communication networks, based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 in the M communication networks by using a user identity identification card N1 in the N pieces of user identity identification cards. The invention aims to automatically select the optimal identification card to access the best network through the prior use condition, the current network environment and the tariff table, and can simultaneously give consideration to the access cost, thereby effectively solving the problem that the access quality and the tariff are difficult to be taken into consideration when the user identification card is selected in the prior art.
Example V,
Fig. 7 shows a structure of another network access mode selection apparatus provided in the embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown.
The apparatus 400 further comprises: a second access mode selecting unit 43.
A second access mode selecting unit 43, configured to adjust the first access mode by using a second preset algorithm to obtain a second access mode, so as to minimize an error between a first access evaluation parameter and a second access evaluation parameter of the second access mode at the current time and in the current communication network, where the second access mode is to access a communication network M2 of the M communication networks by using a user identification card N2 of the N user identification cards.
In the embodiment of the invention, after the first access mode is obtained through the first preset algorithm, the user identification card in the first access mode is tried to be accessed to the corresponding network through the first access mode, at the moment, the second access evaluation parameter of the first access mode is obtained through the acquisition algorithm of the second access evaluation parameter, and when the second access evaluation parameter of the first access mode is more than or equal to the threshold value of the preset second access mode, the first access mode access network can be obtained through the first preset algorithm.
Further, when a second access evaluation parameter of the first access mode is smaller than a preset threshold of the second access mode, adjusting the obtained first preset algorithm of the first access mode through a second preset algorithm so as to minimize an error between the first access evaluation parameter and the second access evaluation parameter of the second access mode at the current time and in the current communication network, specifically, obtaining the second access mode through the first preset algorithm again by adjusting weight values of all characteristic parameters, and attempting to access the network through the second mode.
In this embodiment of the present invention, the first access evaluation parameter is represented by H (i, j), and the second access evaluation parameter is represented by Y (i, j), where the second preset algorithm is obtained by a difference between the first access evaluation parameter and the second access evaluation parameter, as follows:
H(i，j)＝g(z)，
the formula is a cost function and is used for describing the error between the first access evaluation parameter and the second access evaluation parameter of the same access mode.
The cost function is further optimized to minimize the value of the cost function, which can be obtained by the following formula optimization algorithm:
further, the above formula is transformed by a gradient approximation algorithm, so that the following formula can be obtained:
the above equation can be expressed as changing the vector parameter θ to a direction that reduces the prediction error at each iteration until the error is minimal. Where α is the learning rate (measure the amount of change per time), λ is the regularization auxiliary parameter, and x (i) represents the feature vector of network i.
Further, a minimum error value may be set, and when the prediction error value is known to be less than or equal to the minimum error value by changing the vector parameter θ in a direction of reducing the prediction error, the value of θ at that time may be obtained.
In the embodiment of the invention, the communication terminal can define the weight of each characteristic parameter in advance during calculation, and the weighted value of each characteristic parameter is stored, when the error between the actual communication score and the predicted communication score is too large, the weights of the various characteristic parameters in the preset algorithm can be adjusted to ensure that a relatively stable value is finally reached, and at this time, the error between the first access evaluation parameter and the second access evaluation parameter of the first access mode obtained by the first preset algorithm is minimum, since the second access evaluation parameter represents the actual score that the first access mode can successfully access the network, the second access evaluation parameter, therefore, when the error between the second access evaluation parameter and the first access evaluation parameter is the minimum, it is indicated that the first access mode obtained by the first preset algorithm is the optimal first access mode, and the probability of successful access is higher.
In the embodiment of the invention, at least one characteristic parameter of N pieces of user identity identification cards in a terminal is obtained, any one of the N pieces of user identity identification cards can access M communication networks, based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 in the M communication networks by using a user identity identification card N1 in the N pieces of user identity identification cards. The invention aims to automatically select the optimal identification card to access the best network through the prior use condition, the current network environment and the tariff table, and can simultaneously give consideration to the access cost, thereby effectively solving the problem that the access quality and the tariff are difficult to be taken into consideration when the user identification card is selected in the prior art.
Example six,
Fig. 8 is a schematic structural diagram of another network access mode selection apparatus according to an embodiment of the present invention, and for convenience of description, only a part related to the embodiment of the present invention is shown.
The device still includes: a second access evaluation parameter 51, a decision unit 52 and a network access unit.
And a second access evaluation parameter 51, configured to obtain a second access evaluation parameter of the first access manner.
In the embodiment of the present invention, the second access evaluation parameter y (i, j) may be represented by the following formula, and it can be understood that the following formula is only one of the implementation methods of the present invention, and the specific formula may be adjusted according to actual situations, which is not limited by the present invention.
And if the access is successful or not finally {0, 1}, T is the time consumed when the network is successfully accessed, the larger T is, the smaller the score Y value is, a, b and c are constants, and the constant c is used for adjusting the gradient (change rate) of the Y value along with the change of the T value.
And calculating by the formula, finally, describing a second access evaluation parameter by Y (i, j), namely, indicating the probability of successful access, and adopting simple judgment, such as a binary method, wherein the value of an event with successful access is 1, the value of an event with failed access is 0, and whether the seed card is successfully accessed can be known by judging the value of the event with successful access finally.
It can be understood as "normalized final score" (lowest score 0, highest score 1), which may reflect the "satisfaction" of the access to some extent.
For example, when the optimal access mode obtained through the first preset algorithm is the first access mode, if the access is performed through the first access mode, the consumed time period T is 1 minute, and the constant c takes a value of 1, then the operation is performed according to the first preset algorithmIn this case, if the network is successfully accessed in the first mode, Y (i, j) is equal to a +0.5b, and if the network fails to be accessed, Y (i, j) is equal to 0, where the values of a and b may be set according to actual conditions, for example, if a is equal to 0.5 and b is equal to 0.5, Y (i, j) is equal to 0.5+0.5 is equal to 0.75, or if a is equal to 0.6 and b is equal to 0.4, Y (i, j) is equal to 0.6+0.4 is equal to 0.5 is equal to 0.8.
According to the value model, a function curve diagram is made, see fig. 5:
as can be seen from the above figure, the horizontal axis represents the time consumed when accessing the network by the access method obtained through calculation, and the vertical axis represents the second access evaluation parameter Y (i, j) in units of minutes, and when the value of Y is greater than or equal to a, it represents that the seed card can be accessed, and the smaller the value of Y, the lower the probability of access is, where b is 1-a, in order to ensure the "margin" of the total score between 0 and 1;
further, in the present invention,being the right half of the sigmoid function after it is flipped about the X-axis, since time cannot take a negative value, when T ∈ (0, ∞), y ∈ (0, 0.5), and therefore molecule 2 expands its range by a factor of 2.
In this formula, when T is infinitely close to 0, the y value is infinitely close to 1(1 represents a full score), and as T increases, the y value will approach a.
In the embodiment of the present invention, the communication score of the user identification card is obtained by calculating the characteristic parameter of the user identification card through the above calculation formula, and since the prediction formula uses a sigmoid function, the obtained value ranges from 0 to 1, and the probability of successful access increases with the increase of the score, for example, in an access network a of the user identification card a, the obtained second access evaluation parameter is 0.3, and the preset second access evaluation parameter is 0.7, at this time, since the second access evaluation parameter is smaller than the preset evaluation parameter, a second access mode is obtained through a second preset algorithm, and if the user identification card a accesses a network b, the obtained second access evaluation parameter is larger than the preset evaluation parameter, the network is accessed through the second mode.
The determining unit 52 is configured to determine whether the second access evaluation parameter of the first access manner is greater than or equal to a preset second access evaluation parameter.
In the embodiment of the present invention, as can be known from the above-mentioned acquisition formula of the second access evaluation parameter, when a value of Y is greater than or equal to a, it indicates that the seed card can be accessed, and the smaller the value of Y is, the lower the probability that the seed card can be accessed is, where b is 1-a, which is to ensure that the total score is "margin" between 0 and 1.
Therefore, only when the value of the second access evaluation parameter Y (i, j) is greater than or equal to a, the probability that the first access mode can be successfully accessed is higher, so that the preset value of the second access evaluation parameter can be any value between a and 1, which can be set according to the actual situation, and the invention is not limited.
A network accessing unit 53, configured to access a communication network by using the first access manner if the second access evaluation parameter of the first access manner is greater than or equal to a preset second access evaluation parameter.
In the embodiment of the present invention, when the second access evaluation parameter of the first access mode is obtained to be greater than or equal to the preset second access evaluation parameter, which indicates that the probability that the first access mode can successfully access the network is higher, for example, the second access evaluation parameter of the first access mode is 0.9, the preset second access evaluation parameter is 0.7, and 0.9 is greater than 0.7, at this time, the subscriber identity card in the first access mode is used to access the network corresponding to the first subscriber identity card in the first access mode.
In the embodiment of the invention, at least one characteristic parameter of N pieces of user identity identification cards in a terminal is obtained, any one of the N pieces of user identity identification cards can access M communication networks, based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 in the M communication networks by using a user identity identification card N1 in the N pieces of user identity identification cards. The invention aims to automatically select the optimal identification card to access the best network through the prior use condition, the current network environment and the tariff table, and can simultaneously give consideration to the access cost, thereby effectively solving the problem that the access quality and the tariff are difficult to be taken into consideration when the user identification card is selected in the prior art.
It will be understood by those skilled in the art that all or part of the steps in the method according to the above embodiments may be implemented by using a program to instruct relevant hardware, and the program may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, flash disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A network access mode selection method is characterized by comprising the following steps:
acquiring at least one characteristic parameter of N user identity identification cards in a terminal, wherein any one of the N user identity identification cards can be accessed to M communication networks;
based on the at least one characteristic parameter, a first access mode is selected by using a first preset algorithm so that a first access evaluation parameter of the first access mode is an optimal first access evaluation parameter, the first access evaluation parameter is obtained based on the characteristic parameter, and the first access mode is to access a communication network M1 of the M communication networks by using a user identification card N1 of the N user identification cards.
2. The method for selecting a network access mode according to claim 1, wherein after the first access mode is selected by using the first predetermined algorithm, the method further comprises:
and adjusting the first access mode by using a second preset algorithm to obtain a second access mode so as to minimize an error between a first access evaluation parameter and a second access evaluation parameter of the second access mode at the current time and under the current communication network, wherein the second access mode is to access a communication network M2 of the M communication networks by using a user identification card N2 of the N user identification cards.
3. The method for selecting network access mode according to claim 2, wherein the characteristic parameter includes at least one of the following characteristic parameters:
network information, rate information, history, and location information.
4. The method for selecting a network access mode according to claim 2, wherein before the adjusting the first access mode by using the second preset algorithm to obtain the second access mode, the method further comprises:
acquiring a second access evaluation parameter of the first access mode;
judging whether a second access evaluation parameter of the first access mode is greater than or equal to a preset second access evaluation parameter or not;
and if the second access evaluation parameter of the first access mode is greater than or equal to a preset second access evaluation parameter, accessing the communication network by using the first access mode.
5. The method for selecting a network access mode according to claim 1, wherein the obtaining of the characteristic parameter includes obtaining in real time, obtaining at a fixed time, or obtaining once each time a current geographical location of the terminal changes.
6. A network access mode selection apparatus, comprising:
a characteristic parameter obtaining unit, configured to obtain at least one characteristic parameter of N user identification cards in a terminal, where any one of the N user identification cards is accessible to M communication networks;
and the first access mode selecting unit is used for adjusting the first access mode by using a second preset algorithm to obtain a second access mode so as to minimize an error between a first access evaluation parameter and a second access evaluation parameter of the second access mode at the current time and under the current communication network, wherein the second access mode is to access a communication network M2 of the M communication networks by using a user identification card N2 of the N user identification cards.
7. The network access mode selection device of claim 6, wherein the device further comprises:
and a second access mode selecting unit, configured to adjust the first access mode by using a second preset algorithm to obtain a second access mode, so that an error between a second access evaluation parameter of the second access mode at the current time and in the current communication network and the optimal first access evaluation parameter is minimized, where the second access mode is to access a communication network M2 of the M communication networks by using a user identification card N2 of the N user identification cards.
8. The device for selecting network access mode according to claim 7, wherein the characteristic parameter comprises at least one of the following characteristic parameters:
network information, rate information, history, and location information.
9. The network access mode selection device of claim 7, wherein the device further comprises:
a second access evaluation parameter obtaining unit, configured to obtain a second access evaluation parameter of the first access mode;
the interpretation unit is used for judging whether the second access evaluation parameter of the first access mode is greater than or equal to a preset second access evaluation parameter or not;
and the network access unit is used for accessing the communication network by utilizing the first access mode if the second access evaluation parameter of the first access mode is greater than or equal to a preset second access evaluation parameter.
10. The device for selecting network access mode according to claim 6, wherein the obtaining mode of the characteristic parameter comprises obtaining in real time, obtaining at regular time, or obtaining once each time the current geographical location of the terminal changes.
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