• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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  • 优先权
    • 专利摘要:
    The present invention relates to a method and a device for automatically selecting for wireless equipment a wireless access network without user intervention. In particular, the invention covers a method for selecting, according to the location of a mobile device, a connection interface to a wireless access network, the mobile equipment being provided with a plurality of connection interfaces, the method for identifying the access networks available at the location of the mobile equipment, for each mobile equipment connection interface a plurality 'n' of signal quality measurements for each network identified, evaluate for each connection interface, the 'n' measurements according to predefined evaluation criteria, and compare the evaluation results to select the connection interface presenting the best evaluation of the quality of the signal among the plurality of connection interfaces of said mobile equipment.
    公开号:FR3023668A1
    申请号:FR1456617
    申请日:2014-07-09
    公开日:2016-01-15
    发明作者:Alexandru Petrescu；Christophe Janneteau；Sylvain Decremps
    申请人:Commissariat a lEnergie Atomique CEA；Commissariat a lEnergie Atomique et aux Energies Alternatives CEA；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION The invention relates to the field of wireless communications, and in particular relates to a method and a device for automatically selecting for a mobile device a wireless device. wireless access network.
    [0002] State of the art Packet data transmission technologies make it possible to connect a large number of equipment together. The arrival of the Internet on a large scale, coupled with the massive deployment of powerful mobile devices in terms of storage capacity, calculation and communication, such as "smartphones", tablets, offer users - stationary, moving, by public transit, by vehicle - a host of exciting new features, known as "apps". In addition, a wide variety of Internet connection facilities are available in many locations: WiFi hotspots in campuses, shopping malls and public parks, 3G and 4G cellular networks in urban areas and along roads and highways. rails and recently more specific networks for vehicular communications - Intelligent Transportation Systems, (ITS) according to specifications for the implementation of 802.11p wireless local area wireless networks. Mobile equipment, whether of the mobile router or mobile terminal type, has several connection interfaces, each using link technology with very different range and signal characteristics, e.g. ex. WiFi, WAVE "Wireless Access in Vehicular Environments" according to dedicated anglicism, 3G, 4G or other. Given the heterogeneity of access networks, the multiplicity of equipment interfaces, connecting a device to an access network that offers the best connectivity at a given location presents a challenge. Indeed, portable equipment (terminal or mobile router) is often equipped with several communication interfaces, with heterogeneous characteristics. Characteristics that make heterogeneous wireless link access technologies are, for example: (1) whether or not there is a beacon or "beacon" presence signal as in WiFi that has one, while 802.11p not ; (2) if the beacon message makes it possible to measure the quality of the signal in the absence of traffic, in short, medium or long range: such as WiFi in short range while the cellular is in long range; (3) the signal quality values that can be of different sizes: the quality of the WiFi signal is measured between 0 and 70 on a linear scale 70 being the best, while for cellular the quality of the signal is measured from 0 to -90 on a non-linear scale with the -90 being the best. Since mobility is a common situation for these devices, each location where this equipment is located can be covered simultaneously by several wireless access networks, with different conditions of use. For example, in a park the coverage of the 25 WiFi hotspot is simultaneous with the 4G cellular coverage and the WiFi signal is very strong while the 4G signal is very weak. Portable equipment can thus easily attach each of its interfaces to an access network that covers the area where it is located, even if the individual conditions of use are not optimal.
    [0003] 3 3023668 However, even though the terminal can attach simultaneously with each of its interfaces to an access network, a single interface is used to establish connections to application servers because a device can use only one route, called 5 default route, for its outgoing connections. Thus, in the current state, a single interface is chosen which corresponds to that which was the last to attach to an access network. This criterion of choice, which is trivial, gives random results, and often leads to the use of the access network which does not offer the best quality of signal.
    [0004] There are solutions for managing the connection of mobile equipment to access networks. Operating systems commonly used on laptops, smartphones, and tablets, make use of automatic login software. Some known are, for example, the service 15 says "wlansvc" for the operating system Windows 70, the "Connection Manager" software under Linux0 for desktop or "WiFi Manager" for the operating system Androk10 for smartphone or Tablet. This type of software realizes the startup and attachment of each interface to an access network, and operates independently for each interface. The software automatically performs the switchover of a WiFi interface between different WiFi access networks present, called "ESSID", according to the preferences of the user (order of preference between all ESSID, but not with a network and associated passwords) and signal level measurements on each ESSID and channel. However, this type of software has many shortcomings to effectively and optimally manage the connection to an access network.
    [0005] 4 3023668 Thus, this type of device does not comprehensively support the switchover of interfaces, whether between a WiFi interface and a cellular interface, between two different interfaces, whether these interfaces are of the same type or of a different type. .
    [0006] Although this type of software offers the user the possibility of defining a preference on the use of one interface or another, or for the use of a second interface, it does not offer a finer level preferences to choose for example between three or more interfaces. Attachment to a cellular network is triggered by a user command on the user interface, either at the start of an application requiring an Internet connection, or by explicit triggering of the connection. However, when the connection to the cellular network is lost, for example following the exit of the cellular cover, it is necessary to reconnect to the cellular network. However, this type of software does not reconnect to the cellular network when mobile equipment enters the cellular coverage area. In addition, since the connection is triggered by a user action on a user interface, any connection or reconnection can not be performed for a mobile router that does not have a user interface.
    [0007] Among other limitations, these approaches do not automatically switch to a new interface when the user interface becomes unavailable. In particular, the smartphone connection management solution makes it possible to configure the WiFi interface of a smartphone 25 as the "default" interface, and to switch to the cellular interface when the WiFi interface becomes unavailable. The unavailability of the WiFi interface is noted when the WiFi interface is no longer in coverage of any WiFi access point known to the smartphone. This loss of coverage is noted by the absence of reception of WiFi beacon signals for a predetermined period. Thus, this method has the major disadvantage of detecting the unavailability of the WiFi interface late, waiting for the expiration of a predetermined period of time without receiving WiFi beacon from a point 5 known WiFi access. This results in practice in preventing any establishment of new communication during this period when the WiFi interface is maintained as the default interface while it is unavailable, although the cellular interface could be available and therefore usable.
    [0008] Moreover, in these known approaches, there is no comparison of the quality of a signal on heterogeneous networks. Thus on a WiFi interface, signal measurements on WiFi channels are performed periodically. These measurements evaluate the level of reception of "beacon" messages issued periodically by WiFi terminals.
    [0009] However, some access networks, which are designed to provide access to mobile terminals or routers in motion at high speed, are optimized and do not provide "beacon" signals, thus making it impossible to carry out signal measurements. access network. Additional disadvantages of the existing are that there is no possible pre-configuration of known WiFi networks. Indeed, the user must manually enter, at the time of the first connection to a known WiFi access point, the parameters to connect to it. These settings can not be preconfigured in advance. This in particular prevents any use of this type of solution on a mobile router that does not have a user interface, and therefore slows down any first connection to a WiFi access point. Finally, there is no possibility for a device to remain connected in cellular, as soon as a WiFi access is detected, even if the quality of the WiFi connection is bad or less good than the cell connection 63023668. This can result in significantly degrading the quality of communications. There is then the need for a solution that overcomes the disadvantages of known approaches. The present invention meets this need.
    [0010] SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for automatically selecting a wireless access network for mobile equipment. Advantageously, the invention will be implemented in mobile terminals, such as smartphones, laptops or tablets, but also in mobile routers in the field of the automobile, public transport, security for the public domain, the logistics, 15 mobile robots or industrial mobile devices, for example. To obtain the desired results, a method, a device and a computer program product are provided. In particular, a method for selecting, according to the location of a mobile equipment, a connection interface to a wireless access network, the mobile equipment being provided with a plurality of connection interfaces, the method comprising the steps of: - identifying the access networks available at the location of the mobile equipment; - performing for each mobile equipment connection interface a plurality 'n' of signal quality measurements for each identified access network; - 3023668 - evaluate for each connection interface, said 'n' measures according to predefined evaluation criteria; and comparing the evaluation results to select the connection interface having the best signal quality evaluation among the plurality of connection interfaces of said mobile equipment. In a preferred implementation, the evaluation step of the plurality 'n' of measurements is made according to at least three evaluation criteria. Advantageously, the criteria for evaluating the quality of the signal are at least threshold, instability and progress criteria. Evaluation according to the threshold criterion consists in positioning a majority of the 'n' measures with respect to predefined high and low thresholds. The evaluation according to the instability criterion consists of performing a calculation based on a standard deviation value of the 'n' measures. The evaluation according to the criterion of progress consists in determining a change in the quality of the signal for the 'n' measurements. In one embodiment, the step of comparing the evaluations further includes a step of comparing the results of the evaluations with predefined user preferences.
    [0011] Advantageously, the predefined user preferences include priorities for connection to access networks. Advantageously, the available access networks are in the group of WiFi access networks, 3G / 4G cellular access networks, 802.11p access networks, satellite networks, private mobile networks 25 (PMR). Radiocommunications "or" private mobile radio network "such as for example the network. TETRA / TETRAPOL. The connection interfaces of the mobile equipment are in the group of WiFi, 3G / 4G, 802.11p, satellite, PMR interfaces.
    [0012] The invention also covers a device which comprises means for selecting, according to the location of a mobile equipment, a connection interface to a wireless access network, the mobile equipment being provided with a plurality of connection interfaces, the device 5 comprising means for implementing the steps of the method. Advantageously, the method will be implemented in mobile equipment of the mobile terminal or mobile router type. The invention may operate in the form of a computer program product which includes code instructions for carrying out the claimed process steps when the program is run on a computer. DESCRIPTION OF THE FIGURES Various aspects and advantages of the invention will appear in support of the description of a preferred embodiment of the invention, but without limitation, with reference to the figures below: FIG. 1 schematically shows an environment wherein the invention can be implemented; Fig. 2 is a block diagram of the functional blocks for operating the method of the invention in one embodiment; FIG. 3 illustrates a sequence of steps for evaluating the network access interfaces available according to the method of the invention; Figure 4 details the steps of the decision process for evaluating a default interface in one embodiment of the invention.
    [0013] DETAILED DESCRIPTION OF THE INVENTION Reference is made to Figure 1 which schematically shows an environment 100 in which the invention can be advantageously implemented. For the sake of clarity and simplicity, the description is directed to a single portable equipment (102), but those skilled in the art will extend the principles described to a plurality of equipment. In the same way, the description does not differentiate the nature of the portable equipment which can be either a mobile terminal (102-1) or a mobile router (102-2) as zoomed in Figure 1. The equipment The portable has multiple connection interfaces to an access network, each of which can use a specific connection technology with different characteristics. Thus, in a nonlimiting manner, three connection interfaces are illustrated, a WiFi interface (11), a 3G / 4G interface (12), an 802.11p interface (13). Those skilled in the art will understand that the principles described apply regardless of the number and nature of the connection interfaces (In). The portable equipment (102) can be provided with a user interface, such as a screen or keyboard, for example if it is a mobile terminal, or have no user interface if it is a mobile router.
    [0014] The location where portable equipment (102) is located may be covered by one or simultaneously by several wireless access networks. Figure 1 illustrates the case of three available access networks, a WiFi access network (104-1) via a WiFi terminal (104), a cellular access network (106-1) via a 3G base station / 4G (106) and a WAVE access network (108-1) via an 802.11p roadside unit (108). Each network that can be in recovery has different conditions of use, for example even if the WiFi coverage is overlapping with the 4G cellular coverage, in an outdoor park, the WiFi signal can be very strong while the 4G signal be very low.
    [0015] Without the mechanism of the invention, portable equipment will attach each of its interfaces to one of the access networks that covers the area where it is located, even if the individual conditions of use are not optimal. .
    [0016] In general, the invention enables a portable equipment to dynamically select an optimal access network for its connectivity, which is available at a particular location and without user intervention, from a communication method. automatic decision based on predefined user preferences and continuous measurements on the quality of the signals. Figure 2 schematically illustrates the device (200) for operating the method of selecting a wireless access network according to an embodiment of the invention. The device includes a storage block (202) for declaring user preferences.
    [0017] Advantageously, the block is a static configuration file that allows a user to register known network names, indicate their priority, and any other selection criteria such as parameters indicating thresholds high, low, threshold majority that are taken in account by the process of the invention. Thus a user can predefine an order for the selection of networks, for example in descending priority: WiFi / 4G / 802.11p. It should be noted that the method of the invention also operates in the absence of user preferences. The user preferences are stored in a configuration file, which in the case of a mobile terminal with a user interface, can be updated by the user regularly, for example once every minute. In the case of a mobile router without a user interface, the user has the option to install a configuration file containing the preferences once the router is connected in a controlled environment and has an external user interface (such as a keyboard and an external screen). The installation or update of the configuration file containing the preferences can also be done remotely via network connectivity. The mobile router reads the configuration file every time the router starts or whenever the file is changed remotely. Thus, typically, in the context of a mobile router 5 on board a vehicle the mobile router will take into account the user preferences each time the vehicle is started or each remote update of the preferences. The device also comprises a plurality of measurement blocks (204-1, 204-2, 204-n) able to perform measurements on the signals corresponding to the available access networks. Each measurement block is coupled to a respective interface of the equipment. Thus, for the example of FIG. 1, a first measurement block (204-1) coupled to the interface 11 makes it possible to take readings of the WiFi signals, a second measurement block (204-2) coupled to the interface 12 makes it possible to take readings of the 4G signals, and a third measurement block (204-3) coupled to the interface 13 makes it possible to take readings of the 802.11p signals. The set of measurement and user preference blocks is coupled to a decision block (206) which makes it possible to execute an evaluation process taking into account all the parameters and the measurements. The decision block output (206) is coupled to a selection block (208) that selects and activates the interface selected for connection to the network based on the result of the evaluation. Reference is now made to Figure 3 which illustrates a sequence of steps according to the method of the invention for evaluating the available network access interfaces, in one embodiment, corresponding to Figure 2. The block (304-1 ) details the steps to evaluate the quality of the signals on a WiFi type interface. The interface may be a conventional Beacon or Beacon interface in English and be provided with a list of network names with possibly access keys. The attachment to one of these networks is not detailed here and can be done with existing simple algorithms. In a first step (30410), the method verifies the association of the interface with a network. If this is not the case, the method retrieves the name of the ESSID network (Service Set Identifier) in a preconfigured list and re-attaches the interface (304-12). Once the attachment has been made, the method makes it possible to perform (304-14) a sequence of 'n' measurements of the quality of the signal, said last 10 measurements. The value of 'n' can be set in the configuration file, independently for each parameter to be evaluated (T, I and P). In a preferred implementation, 'n' is set to 10, corresponding to a record of the last 10 measurements. It should be noted that the larger 'n' is, the better the interface switching decision is made, in order to switch to a better quality network in real life, and without going back immediately, thus avoiding "ping-pong" "Or inadvertent tipping. On the other hand, more 'n' is large plus it takes time to take these measurements and thus the switchover is less reactive, therefore less effective for certain applications, such as in a vehicular environment for example. On each type of link, it is possible to take a measurement at a predefined time interval depending mainly on the theoretical bandwidth of the respective link, such as for example on a 802.11b WiFi link with a theoretical bandwidth of 11 Mbit / s. It is possible to take a measurement at a minimum interval of approximately 5milli-seconds. In a next step (304-16), the method makes it possible to evaluate the last measurements made on at least three "TIF" criteria, which are preferably threshold (T) or "Threshold" criteria in English. Instability (I) or "Instability" in English and Progress (P) or "Progress" in English. As will be described later, the so-called "TIF" evaluation mechanism is applied to each interface of the mobile equipment being evaluated. The evaluation step makes it possible to generate a validation (OK) or an invalidation (NOK) of the evaluated interface as to its potential for use for communications. The result of the evaluation is sent to the decision module (306). The block (304-2) details the steps for evaluating the quality of the signals on a 3G / 4G cellular type interface. The cellular interface is characterized by a continuous process of connection and reconnection testing in the event of loss of connectivity with a base station. Thus, a first step (304-20) consists in verifying whether the interface is attached to a base station, and proceeding (304-22) to a re-attachment if necessary. This is advantageous for the output of shadow areas, for example for a mobile router in a vehicle exiting a tunnel and no longer covered by any network. Then, as long as the cellular interface is connected, the method allows the step (304-24) to perform 'n' successive measurements on the quality of the signal, said last measurements. Then, in a next step (304-26), the method makes it possible to process these latter measurements by the "TIF 20" evaluation method. The "TIF" evaluation produces a binary result, which validates (OK) or invalidates (NOK) the use of the cellular interface as a communication interface. The result of the evaluation is sent to the decision module (306). The block (304-3) details the steps for evaluating the quality of the signals on an 802.11p type interface for example. The interface can be an untagged interface and be characterized by the absence of a connection process to a base station and the absence of sending beacon by the base station. A mobile terminal or router can not measure the signal strength of the base station. To solve this problem the method allows for this interface to periodically send a message of the type "IPv6 Router Advertisement (RA)" (or a message "IPv4 Router Advertisement (RA)") according to the anglicism recognized by the station basic "without tag". This allows the mobile terminal or router to evaluate the signal strength based on the reception of this message. Thus, a first step (304-30) consists in checking the receipt of a message (RA), then successively reading 'n' measurements on the 'n' last messages (RA) received (step 304-32 looped ' n 'times). When the last measurements are made, the method proceeds to the next step (304-36) to apply the TIF mechanism on these measurements in order to obtain a validation ( OK) or disable (NOK) the potential of use of this communication interface. The result of the evaluation is sent to the decision module (306).
    [0018] The method then operates (306) at the interface's choice based on the OK / NOK results received from each of the interfaces and taking into account the user preferences (302). Thus, if the WiFi interface for example is OK and all other interfaces are disabled (NOK), the method selects this interface. On the other hand, if several interfaces are OK simultaneously, taking into account the user preferences makes it possible to select the interface that is predefined in priority. After selecting the optimal interface, the method allows the next step to switch the equipment on the new interface or maintain the current interface if the latter has been revalidated.
    [0019] Thus, the "TIF" evaluation is performed independently on each interface in order to provide an indication of the capability of the respective interface to be used as the "default" interface of the mobile terminal or router.
    [0020] Advantageously, the device of the invention makes it possible to perform new measurements for each interface periodically. For each new measurement, the "TIP" mechanism re-evaluates the last OK or NOK suggestion, taking into account the last 5 "n-1", plus the last new measure. As indicated, the "TIP" assessment contains three successively assessed criteria: the Threshold criterion, the Instability instability criterion and the Progress progress criterion. Figure 4 details the steps for evaluating the TIP criteria. In one embodiment, the criteria are evaluated according to the "TIP" order of the T-rating of the threshold first (402), then the evaluation I of the instability (404) and finally the evaluation P of the progress (406) as the order to obtain a correct result as quickly as possible. The evaluation T is relatively rough but responds quickly, while the evaluation I is more greedy in computing time but its result is often correct in relation to reality. Evaluation P is as fast as possible, in a single subtraction operation, but the result may be subject to errors. In alternative implementations, different evaluation orders, such as "P-I-T" or "I-P-T" are possible and constitute a parameter defined in the configuration file. At the end of the evaluation, the interface is proposed as validated (OK) or invalidated 'NOK'. In a first step (402), the quality of the signal measured on the 'n' last measurements is evaluated with respect to the threshold criterion. Preferably, two thresholds are predefined: a high threshold (Thigh) (for example: 80%), and a low threshold (Tlow) (for example: 20%). A value called "majority" is defined to perform the evaluation of 'n' measures, for example equal to 60%. Threshold evaluation consists of positioning the majority of the last 'n' values of the measurements in relation to the predefined high and low thresholds. If the majority of the measurements are above the high threshold, then the interface is declared as validated (OK). If the majority of measurements are below the low threshold, then the interface is declared as disabled (NOK). If the evaluation of the interface on the basis of the above thresholds does not make it possible to declare the interface valid (OK) or not valid (NOK) then the method proceeds to the next step (404), for evaluate the second criterion of instability. In an implementation variant, the threshold evaluation (T) is a strict evaluation, where the two high and low thresholds take the same value, for example 70%. If the majority of the 'n' last measures are above the threshold then the interface is declared OK, otherwise it is invalidated, and it is not necessary to evaluate the other instability and progress criteria, and the interface is not retained. Step (404) consists in evaluating the quality of the signal for the interface 15 considered on the criterion of instability defined as follows. Initially, two threshold values are predefined in a configuration file: a major threshold value (for example 75%) and a minor threshold value (for example 40%). The method makes it possible to calculate a standard deviation value (sigma) on the last n measurements, and to consider a possible maximum deviation value (sigma_max) as the maximum possible value of the signal level for this interface divided by two. The maximum possible value of the signal level on an interface is the maximum value that can be reported by a driver that controls the network card and allows querying the network status. For example, the maximum value may be 90 in the case of a cellular interface driver, and 70 in the case of a WiFi interface driver. The evaluation according to the criterion of instability consists in performing a calculation based on a standard deviation value of the 'n' last measurements as follows: if the value of the standard deviation is greater than the value of 17 3023668 percentage of the major threshold of the maximum standard deviation (eg sigma> 75% of the sigma_max), it is considered that there is a lot of instability on the link, and the interface is not validated ( NOK). If the value of the standard deviation is smaller than the lower threshold percentage value of the maximum standard deviation (eg sigma <40% of sigma_max), then the link is considered relatively stable and the interface is validated (OK). If the value of the standard deviation is between the two major and minor thresholds, the method continues by evaluating the progress criterion (P) in step (406). The evaluation according to the criterion of progress consists in determining a change in the quality of the signal for the last n 'measures as follows: the difference between the last (the most recent) and the first (oldest) measure of the The last measurements are calculated. If this difference is positive, then it is considered that the interface is valid (OK), otherwise the interface is not validated (NOK).
    [0021] The result of the evaluation of the TIF criteria for each interface is then addressed to the decision module (306) to select the optimal interface, and then activate the selected interface (308). Advantageously, the selected optimal interface is activated by configuring it as a "default" interface on the equipment (terminal 20 or mobile router). Thus, a method has been described which makes it possible to automatically switch between networks of the same type (WiFi to WiFi for example), or between different networks, selecting at any time as the default network the one that offers the best connectivity in terms of signal quality and user preferences. The mechanism described in this invention works as well in the presence of the configuration file containing the user preferences as without a configuration file. In the case where the user 18 3023668 has not expressed preferences, such as in test configuration, or when exploring an unknown radio environment, or for a Mobile Router serving a set of users whose preferences are incompatible (eg by public transport), the mechanism 5 operates as follows. If several interfaces are evaluated as OK by the evaluation method "TIF" then the default interface is chosen according to three possible alternatives: random choice according to a source of random data: a pseudo random number generator for example. or mouse movement on a user interface in the case of a mobile terminal, or measurements of high precision temperature samples or the time stamp stamped on incoming packets in the case of a mobile router; Alternatively, a choice based on the intrinsic characteristics of the radio technology (for example the interface whose nominal specifications have not been measured, but whose bandwidth, latency are higher, or for example using the 4G interface rather than the 802.11b interface because its bit rate per specification is higher; alternatively, a choice of the interface which was the last to correctly attach to an access network. Advantageously, the method operates without User intervention other than pre-configuration of parameters Major advantages of the present invention are: - the ability to handle the heterogeneity of the access networks - an operation with a variable number of interfaces network access; 3023668 - operation without user intervention on a user interface Thus, the method described makes it possible to make the connectivity to the infrastructure more reliable. ucture of a mobile terminal or a mobile router, continuously evaluating the quality of the connection of each of the interfaces of the terminal or the mobile router and changing the default interface used by the communications when necessary. The selection method also avoids any disruption in connectivity, as long as at least one of the interfaces is connected, while maximizing the quality of service available for communications. Moreover, when combined with an IF mobility management protocol (Mobile IPv4, Mobile IPv6, NEM0v4, NEM0v6, PMIPv4, PMIPv6), the method of the invention makes it possible to keep applications running during the 15 failovers. between interfaces and networks. For example, in the case where the Mobile IPv6 protocol is used, the terminal or mobile router, after selecting a new interface will send a message named "Binding Update" containing a "Care-of Address" address containing the IPv6 address of the interface selected by TIF. This message 20 is sent to a Home Agent, which is a fixed router entity established at the heart of the network, and which is in charge of redirecting the data flows to the new attachment point of the network. terminal or mobile router. Those skilled in the art will appreciate that the present invention may be implemented from hardware and / or software and operate on a computer. It may be available as a computer program product on a computer readable medium. The support can be electronic, magnetic, optical, electromagnetic or be an infrared type of diffusion medium. Such media are, for example, Random Access Memory RAMs (ROMs), magnetic or optical disks, disks, or disks (Compact Disk - Read Only Memory (CD-ROM)). ), Compact Disk - Read / VVrite (CD-R / VV) and DVD). 5 21
    权利要求:
    Claims (14)
    [0001]
    REVENDICATIONS1. A method for selecting, according to the location of a mobile equipment, a connection interface to a wireless access network, the mobile equipment being provided with a plurality of connection interfaces, the method comprising the steps of: - identify the access networks available at the location of the mobile equipment; - perform for each mobile equipment connection interface a plurality 'n' of signal quality measurements for each identified access network; - Evaluate for each connection interface, said 'n' measures according to predefined evaluation criteria; and - comparing the evaluation results to select the connection interface having the best signal quality evaluation among the plurality of connection interfaces of said mobile equipment.
    [0002]
    2. The method of claim 1 wherein the step of evaluating the plurality 'n' of measurements is made according to at least three evaluation criteria.
    [0003]
    The method of claim 1 or 2 wherein the criteria for evaluating the quality of the signal are at least threshold, instability and progress criteria.
    [0004]
    4. The method according to claim 3 wherein the threshold criterion evaluation comprises positioning a majority of said n-measurements against predetermined high and low thresholds.
    [0005]
    The method of claim 3 or 4 wherein the evaluation according to the instability criterion comprises performing a calculation based on a standard deviation value of said 'n' measurements.
    [0006]
    6. The method according to any one of claims 3 to 5 wherein the evaluation according to the progress criterion is to determine an evolution of the signal quality for said 'n' measurements.
    [0007]
    The method of any one of claims 1 to 6 wherein the comparing step further comprises a step of comparing the results of the evaluations with predefined user preferences.
    [0008]
    The method of claim 7 wherein the predefined user preferences include priorities for connection to access networks.
    [0009]
    The method of any one of claims 1 to 8 wherein the available access networks are in the group of WiFi access networks, 3G / 4G cellular access networks, 802.11 access networks. p, satellite networks, PMR networks.
    [0010]
    10. The method according to any one of claims 1 to 9 wherein the connection interfaces of the mobile equipment are in the group of WiFi, 3G / 4G, 802.11 p, satellite interfaces, PM R. 23 3023668
    [0011]
    11. A device for selecting, according to the location of a mobile device, a connection interface to a wireless access network, the mobile equipment being provided with a plurality of connection interfaces, the device comprising means for carrying out the steps of the method according to any one of claims 1 to 10.
    [0012]
    12. Mobile equipment comprising a device according to claim 11.
    [0013]
    The device of claim 11 or 12 wherein the mobile equipment is a mobile terminal or a mobile router. 15
    [0014]
    14. A computer program product, said computer program comprising code instructions for performing the steps of the method of any one of claims 1 to 10 when said program is run on a computer.
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    同族专利:
    公开号 | 公开日
    US20170164274A1|2017-06-08|
    WO2016206707A1|2016-12-29|
    EP3167662A1|2017-05-17|
    FR3023668B1|2017-10-27|
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    法律状态:
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    2016-01-15| PLSC| Publication of the preliminary search report|Effective date: 20160115 |
    2016-07-29| PLFP| Fee payment|Year of fee payment: 3 |
    2017-07-31| PLFP| Fee payment|Year of fee payment: 4 |
    2018-07-27| PLFP| Fee payment|Year of fee payment: 5 |
    2019-07-31| PLFP| Fee payment|Year of fee payment: 6 |
    2021-04-09| ST| Notification of lapse|Effective date: 20210305 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1456617A|FR3023668B1|2014-07-09|2014-07-09|METHOD AND DEVICE FOR AUTOMATICALLY SELECTING WIRELESS ACCESS NETWORK|FR1456617A| FR3023668B1|2014-07-09|2014-07-09|METHOD AND DEVICE FOR AUTOMATICALLY SELECTING WIRELESS ACCESS NETWORK|
    PCT/EP2015/063225| WO2016206707A1|2014-07-09|2015-06-12|Automatic selection of a wireless access network|
    US15/321,668| US20170164274A1|2014-07-09|2015-06-12|Method and apparatus for automatic selection of wireless access network|
    EP15730113.6A| EP3167662A1|2014-07-09|2015-06-12|Automatic selection of a wireless access network|
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