Field of the invention:
[0001] The present invention relates to an access management system and method for a fleet of vehicles.
Background of the invention:
[0002] Current vehicle access control systems are user, device and vehicle specific systems which poses difficulties in multi driver, multi vehicle eco-system. These are more of hardware paired system.
[0003] A patent literature 201811017528 discloses methods and systems for securing access to a vehicle. The embodiments therein disclose a methods and systems for securing access to a vehicle. The embodiments disclosed herein relate to secured access to the vehicle, and more particularly to methods and systems for securing access to the vehicle by using biometrics and dynamic passwords. The system includes a first biometric device, a second biometric device, a Control Unit (CU), and an electronic device. The system allows a first user and a second user to access the vehicle by using at least one of a biometrics and a dynamic One-Time Password (OTP). The system allows a first user and a second user to turn on the ignition of the vehicle by using at least one of biometrics and dynamic OTP. The second user may be added by the first user and may be notified, if the second user accesses the vehicle.
Brief description of the accompanying drawings:
[0004] An embodiment of the disclosure is described with reference to the
following accompanying drawing,
[0005] Fig. 1 illustrates a system for access management of fleet of connected
vehicles, according to an embodiment of the present invention, and
[0006] Fig. 2 illustrates a method for managing access to fleet of connected vehicles,
according to the present invention.
Detailed description of the embodiments:

[0007] Fig. 1 illustrates a system for access management of fleet of connected vehicles, according to an embodiment of the present invention. The system 100 comprises a cloud server 110 in wireless communication with a controller 102 of each of the connected vehicles 112 of the fleet through a respective gateway unit 104. The wireless communication is established over a communication network 118, characterized in that, the system 100 configured to authorize a user, requesting to use one of the connected vehicle 112 using a communication device 108, based on an authentication mode selected in dependence of state of the communication network 118 between the cloud server 110, and at least one of the communication device 108 and the gateway unit 104.
[0008] In Fig. 1, four connected vehicle 112 are shown. The connected vehicle 112 refers to that vehicle, which is capable of communicating with external infrastructure such as but not limited to the cloud server 110 over the communication network 118, either through a built-in gateway unit 104 or retrofit gateway unit 104. A Telecommunication Control Unit (TCU) is a non-limiting example of the gateway unit 104. A first connected vehicle 1122 comprises a first controller 1022 connected to a first gateway unit 1042, a second connected vehicle 1124 comprises a second controller 1024 connected to a second gateway unit 1044, a third connected vehicle 1126 comprises a third controller 1026 connected to a third gateway unit 1046, and a fourth connected vehicle 1128 comprises a fourth controller 1028 connected to a fourth gateway unit 1048. Further, a communication device 108 is known to be used by a user. In the Fig. 1, a first communication device 1082, a second communication device 1084 and a third communication device 1086 are shown to be used by a first user, a second user and a third user respectively. The communication device 108 is any one of the computer, tablet, mobile phone, wearable device and the like. The communication network 118 represents both of a first communication network 114 and a second communication network 116, and the status of the communication network 118 refers to status of at least one of the first communication network 114 and the second communication network 116

based on the conditions or scenarios. The same must not be understood in limiting manner.
[0009] In the Fig. 1, an administrator 106 is also shown which controls the assignment of the connected vehicle 112 to the specific user. The administrator 106 accesses the cloud server 110 through an interface (not shown). The interface (Example, the web portal or the mobile application) allows pairing of the user and the connected vehicle 112 i.e. the administrator 106 is provided with a feature to assign the user to specific connected vehicle 112 based on overall business or any other eco-system needs. The system 100 enables the administrator 106 make assignments through the interface without the need of any external communication channel like key-handover, phone call etc. In an alternative embodiment, the user 108 selects the desired connected vehicle 112 without any need/intervention of the administrator 106, i.e. through the mobile application installed in the communication device 108. In an embodiment, the administrator 106 is possible to be an Artificial Intelligence (AI) module and/or a Machine Learning (ML) module and/or a set of policy driven machine without the need of a human administrator 106. The human administrator 106 shown in the Fig. 1 is just for illustration and, the implementation of the present invention must not be limited to the same.
[0010] According to the present invention, the connected vehicle 112 is either an electric vehicle or combustion engine vehicle or a hybrid vehicle. Further, the connected vehicle 112 is any one of a two-wheeler such as motorcycles, scooters, a three-wheeler such as auto-rickshaw, a four-wheeler such as car and multi-wheeler vehicles such as lorry, buses, trucks etc. Still further, the fleet of the connected vehicle 112 comprises combination of same type or different types of connected vehicles 112.
[0011] According to the present invention, the system 100 provides different authentication mode for different states of the communication network 118. While a first state is detected, a corresponding first mode is selected for authorization. The

first state corresponds to connected communication network 118, between the cloud server 110 and both of the gateway unit 104 and the communication device 108. Further, between the cloud server 110 and the communication device 108, connectivity through both data network and cellular network is available. The first mode comprises verification of a One Time Password (OTP) sent to a registered mobile number of the user with a code entered in a mobile application installed in the communication device 108 of the user. Needless to say, the mobile application is registered with the cloud server 110. Once the user is authorized, the cloud server 110 sends an activation signal to the controller 102 of the connected vehicle 112 over the communication network 118.
[0012] While a second state is detected, a corresponding second mode is selected for authorization. The second state corresponds to the connected communication network 118, between the cloud server 110 and both of the gateway unit 104 and the communication device 108. Further, between the cloud server 110 and the communication device 108, connectivity through data/internet network is absent/weak and only cellular network is available. The second mode comprises verification of the OTP sent to the registered mobile number of the user with a code sent back as the Short Message Service (SMS) from the communication device 108 of the user. The cloud server 110 verifies the received code and authorizes the user, and then sends the activation signal to the controller 102 of the connected vehicle 112 over the communication network 118.
[0013] While a third state is detected, a corresponding third mode is selected for authorization. The third state corresponds to nonfunctional communication network 118, i.e. both the data/internet network and the cellular network nonfunctional/ operational between the cloud server 110 and the communication device 108 of the user. However, the communication between the cloud server 110 and the gateway unit 104 of the connected vehicle 112 exists. The third mode comprises verification by logging-in the cloud server 110 through a web portal by using user credentials. The web portal is accessed by an auxiliary communication device having connected

communication network 118 through any one of the data network and the cellular network. The cloud server 110 verifies the user based on user credentials, and then sends the activation signal to the controller 102 of the connected vehicle 112 over the communication network 118. The auxiliary communication device is also any one of the computer, tablet, mobile phone, wearable device and the like.
[0014] While a fourth state is detected, a corresponding fourth mode is selected for authorization. The fourth state corresponds to nonfunctional communication network 118, both the data network and the cellular network, between the cloud server 110 and both of the communication device 108, and the gateway unit 104 of the connected vehicle 112. The fourth mode comprises verification of user data by the controller 102 itself. The user data transmitted from the communication device 108 to the controller 102 over short range communication means. The communication between the communication device 108 and the gateway unit 104 is performed using any one of the short range communication means selected from a group comprising a Bluetooth™, Near Field Communication (NFC), InfraRed (IR) and the like.
[0015] While a fifth state is detected, a corresponding fifth mode is selected for authorization. The fifth state corresponds to any one of functional and nonfunctional communication network 118. The fifth mode comprises verification of user biometrics by any one of the cloud server 110 and the controller 102. The user biometrics is recorded and transmitted by any one of the communication device 108, and an input device (not shown) within the connected vehicle 112. The transmission of user biometrics to the controller 102 is done through the gateway unit 104. In the fifth state, the functional communication network 118 corresponds to connected communication network 118 between the cloud server 110 and both of the gateway unit 104 and the communication device 108. Further, between the cloud server 110 and the communication device 108, connectivity through at least one of the data network and the cellular network is available. Similarly, the nonfunctional communication network 118 corresponds to no connection between

the cloud server 110 and at least one of the communication device 108 and the gateway unit 104.
[0016] According to the present invention, the authorization of the user is further verified, either periodically or once, by plausibility check of a current location of the connected vehicle 112 and the communication device 108. The current location is received from respective geo-positioning units over the communication network 118. The geo-positioning units is a receiver and part of but not limited to Global Positioning System (GPS), GLObal NAvigation Satellite System (GLONASS), BeiDou Navigation Satellite System (BDS), Galileo, Navigation with Indian Constellation (NAVIC) and the like. Thus, each of the communication device 108 and the connected vehicle 112 are provided with a receiver to detect the current location and send to the cloud server 110 for plausibility check.
[0017] According to the present invention, the system 100 grants a complete access to the connected vehicle 112 when any one of the first mode and the second mode is used for authorization of the user. The system 100 grants a partial access to the connected vehicle 112 when any one of the third mode and the fourth mode are used for authorization. The partial access is convertible to the complete access, when at least one selected from any one of the first mode and the second mode, and a plausibility check, is performed upon reconnection of the communication network 118. Thus, the authorization as per the first mode and the second mode are either done at first, or after the third mode or fourth mode to provide the complete access.
[0018] A working example of the present invention is explained, and in no manner the present invention is supposed to be limited to the same. Consider the administrator 106 assigns or designates the second connected vehicle 1124 to a first user. The first user approaches the location where the second connected vehicle 1124 is parked, either by using the digital map in the first communication device 1082 or by physical searching. Needless to say, all the details of the first user and the connected vehicles 112 are stored in the cloud server 110 such as name, address,

phone number, vehicle number, emission checks, and other details as known in the art. The first user uses the first communication device 1082 and opens an installed mobile application and enters a code received through the cloud server 110. The first communication device 1082 is connected to the cloud server 110 through the first communication network 114, which is a cellular telecommunication network (such as Global System for Mobile Communications (GSM)) providing cellular (voice, text, multimedia) and internet/data connectivity. The code is received either due to assignment of the second connected vehicle 1124 by the administrator 106 or due to a use request raised by the first user through the first communication device 1082. The code is received by the first communication device 1082 through a Short Message Service (SMS). The first user enters the received code in the field provided in the mobile application and sends back to the cloud server 110. Upon successful verification of the code, the cloud server 110 grants access to the first user to use the second connected vehicle 1124. In other words, the cloud server 110 enables the start of the second connected vehicle 1124 by sending an activation signal through the second communication network 116. The second controller 1024 receives the activation signal through the second gateway unit 1044 and allows the start of the second connected vehicle 1124. Here, the authentication of the first user is performed through the first mode since the first communication network 114 and the second communication network 116 are connected without any connectivity loss.
[0019] In the above example, consider a scenario where the second state exists instead of the first state, i.e. the internet/data network over the first communication network 114 is weak or absent. In this scenario, the code received from the cloud server 110 is sent back to the cloud server 110 through an SMS using the first communication device 1082. The SMS is sent over the first communication network 114 but using only the SMS based service since data/internet connectivity is absent. Again, once the code is verified, the cloud server 110 sends the activation signal to the second controller 1024 over the second communication network 116.

The second controller 1024 receives the activation signal through the second gateway unit 1044 and allows the start of the second connected vehicle 1124.
[0020] Further, in another scenario, consider the third state exists. In this scenario, no communication exists between the cloud server 110 and the first communication device 1082. The first user then uses the auxiliary communication device which has connected communication network 118 (specifically the first communication network 114) to login to the cloud server 110 for authentication. Once, the first user is authenticated based on the user credentials and other information as may be needed for authorization, the second controller 1024 receives the activation signal from the cloud server 110 through the second gateway unit 1044, and allows the start of the second connected vehicle 1124. However, only partial access is given to the second connected vehicle 1124 due to pending authentication from the cloud server 110 and/or the plausibility check. As soon as the first communication network 114 is reestablished/connected, the cloud server 110 receives the notification from the installed mobile application, following which the authentication based on first mode or the second mode is performed. Alternatively, the plausibility check is performed. Once authenticated, a complete access to the second connected vehicle 1124 is granted to the first user.
[0021] In yet another scenario, consider the fourth state exists. In this scenario, both the first communication network 114 and the second communication network 116 are nonfunctional. The system 100 allows the second controller 1024 to verify the user data of the first user received directly from the first communication device 1082. The cloud server 110 is unable to authenticate and send an activation signal. However, the system 100 is designed in a manner, that the second controller 1024 is enabled to detect the condition of the loss of the second communication network 116 and allow the authentication of the user through the first communication device 1082 over short range wireless or wired communication means such as Bluetooth, NFC, IR, Universal Serial Bus (USB) and the like. However, only a partial access is granted due to pending authentication or plausibility check from the cloud server

110. But as soon as the first communication network 114 and the second communication network 116 become operational, the first mode or second mode of authentication is performed or the plausibility check is performed or both, followed by granting full/complete access to the second connected vehicle 1124.
[0022] In yet another scenario, consider the fifth state exists. If both of the first communication network 114 and the second communication network 116 are operational, then the first user records and transmits the user biometric through the first communication device 1082 to the cloud server 110 over the first communication network 114. The cloud server 110 verifies the user biometrics against the pre-stored data and sends an activation signal to the second controller 1024 through the second communication network 116. In case the first communication network 114 is not operational, the user authentication is performed over the second communication network 116. The first communication device 1082 connects to the second controller 1024 over the short range communication means and communicates with the cloud server 110 for authentication. If authenticated, the cloud server 110 then sends an activation signal to the second controller 1024 to enable start of the second connected vehicle 1124. In yet another scenario, if both the communication network 118 are nonfunctional, then the authentication is carried out directly by the second controller 1024. However, after successful verification, only partial access is granted, and a complete access is granted if the authentication is carried out through the cloud server 110 in either of the first mode or the second mode, after reestablishment of both at least one of the communication network 118.
[0023] The above example is explained with reference to the first user, however the same is applicable if the second user or the third user try to use the third connected vehicle 1126 or the fourth connected vehicle 1128 or any other connected vehicle 112.

[0024] According to an embodiment of the present invention, the first mode through the fifth mode is performed in the sequence of priority based on the state of communication network 118. Further in another embodiment, the fifth mode of authentication is considered as an alternative of the first mode. The user biometrics is usable instead of the code or verification and authentication of the user.
[0025] Fig. 2 illustrates a method for managing access to fleet of connected vehicles, according to the present invention. The method comprises multiple steps, of which a step 202 comprises receiving a request to use the connected vehicle 112 using a communication device 108. A step 204 comprises authorizing the user based on an authentication mode selected in dependence of state of the communication network 118 between the cloud server 110, and at least one of the communication device 108 and the gateway unit 104 of the connected vehicle 112.
[0026] The method provides different authentication mode for different states of the communication network 118. While the communication network 118 is detected in the first state, the method comprises authorizing the user through the first mode. The first state corresponds to the connected communication network 118 between the cloud server 110 and both of the communication device 108 and the gateway unit 104. Further, between the cloud server 110 and the communication device 108, connectivity through both data network and cellular network is available. The first mode comprises verifying the One Time Password (OTP) sent to the registered mobile number of the user with the code entered in the mobile application installed in the communication device 108 of the user. After the authentication, a step comprises verifying the code and sending the activation signal from the cloud server 110 to the controller 102 through the gateway unit 104. A further step comprises allowing the start of the connected vehicle 112 by the controller 102.
[0027] While the communication network 118 is detected in the second state, the method comprises authorizing the user through the second mode. The second state corresponds to connected communication network 118, between the cloud server

110 and both of the gateway unit 104 and the communication device 108. Further, between the cloud server 110 and the communication device 108, connectivity through data network is absent and only cellular network is available. The second mode comprises verifying, by the cloud server 110, the OTP sent to the registered mobile number of the user with the code sent back though Short Message Service (SMS) from the communication device 108 of the user. After the authentication, a step comprises sending the activation signal from the cloud server 110 to the controller 102 through the gateway unit 104. A further step comprises allowing the start of the connected vehicle 112 by the controller 102.
[0028] While the communication network 118 is detected in the third state, the method comprises authorizing the user through the third mode. The third state corresponds to nonfunctional communication network 118, i.e. both the data/internet network and the cellular network nonfunctional/ nonoperational between the cloud server 110 and the communication device 108 of the user. However, the connectivity between the cloud server 110 and the gateway unit 104 of the connected vehicle 112 exists. The third mode comprises verifying the user by logging-in the cloud server 110 through the web portal using user credentials. The web portal is accessed by the auxiliary communication device. After the authentication, a step comprises sending the activation signal, to enable access, from the cloud server 110 to the controller 102 through the gateway unit 104. A further step comprises allowing the start of the connected vehicle 112 by the controller 102. However, the partial access is granted as the authorization is performed by the auxiliary communication device and not by the communication device 108 of the user. The complete access is granted after authorization through either of the first mode or the second mode, and/or the plausibility check after the communication network 118 is connected.
[0029] While the communication network 118 is detected in the fourth state, the method comprises authorizing the user through the fourth mode. The fourth state corresponds to the nonfunctional communication network 118, both data network

and the cellular network, between the cloud server 110 and both of the communication device 108 and the gateway unit 104. The fourth mode comprises verifying the user data received directly from the communication device 108 by the controller 102 through the gateway unit 104. The controller 102 and the communication device 108 directly communicate through the short range communication means. After the verification and authentication, a step comprises enabling access and allowing the start of the connected vehicle 112 by the controller 102. However, the partial access is granted as the authorization is performed by the auxiliary communication device and not by the communication device 108 of the user. The complete access is granted after authorization through either of the first mode or the second mode, and/or the plausibility check after the communication network 118 is connected.
[0030] While the communication network 118 is detected in the fifth state, the method comprises authorizing the user through the fifth mode. The fifth state corresponds to any one of functional and nonfunctional communication network 118. The fifth mode comprises verifying user biometrics by any one of the cloud server 110 and the controller 102 through the gateway unit 104. The user biometrics is recorded and received from any one of the communication device 108 and the input device within the connected vehicle 112.
[0031] The authentication of the user is further followed by checking plausibility of the current location of the connected vehicle 112 and the communication device 108. The current location is received from respective geo-positioning units over the communication network 118. The plausibility check is performed after certain time post start of the connected vehicle 112.
[0032] As explained, the method also comprises granting the complete access to the connected vehicle 112 when any one of the first mode and the second mode is used for authorization of the user. The method comprises granting the partial access to the connected vehicle 112 when any one of the third mode and the fourth mode

is used for authorization. The partial access is convertible to the complete access, when at least one selected from any one of the first mode and the second mode, and the plausibility check, is performed upon reconnection of the communication network 118. Thus, the authorization as per the first mode and the second mode are either done at first, or after the third mode or fourth mode to provide the complete access.
[0033] The communication between the communication device 108 and the gateway unit 104 is performed using any one selected from a group comprising a Bluetooth™, Near Field Communication (NFC) and InfraRed (IR).
[0034] According to the present invention, an on-the-air vehicle access management system 100 is provided. The system 100 and method is applicable to multi user/driver, multi vehicle mobility eco-system. The access management is dynamically controlled, i.e. access to the connected vehicle 112 is assignable to (or selectable by) any intended driver without need of any configuration change. The connected vehicle 112 indicates that the controller 102 is connected to the internet or/and equipped with wireless/wired communication. In addition to internet communication, further wireless/wire communication is required only to manage certain situations and these need not be part of system 100 in case of operational internet network. The present invention discloses the method to authenticate the user/driver before the user starts driving the connected vehicle 112. Thus, allowing the data of the connected vehicle 112 to be tagged along with the user for monitoring user behavior information. Further, the provision of the partial access gives an instant access, though with limitations, to allow the access to the connected vehicle 112. However, later with the plausibility check or as authorization as per first mode or the second mode, a complete access is granted. This saves time and improves convenience.
[0035] The present invention provides vehicle management system 100 by the controller 102, the gateway unit 104, the cloud server 110, an administrator

Interface (if used) and the mobile application installed in the communication device 108. The controller 102 in the connected vehicle 112 is configured to allow torque generation only when authorized by activation signal received from the cloud server 110. The architecture of the system 199 is designed to relay authenticating/activation signal to the controller 102 through the gateway unit 104 only when the user’s identity is confirmed. The user identity is made to confirm through the OTP entered in the mobile application, sending SMS, through web portal with driver credentials, and short range communication means. The different methods are situation based as explained above with reference to states and modes. Further, the system 100 allows the authentication modes to be enabled / disabled based on situations by the administrator 106 or automatically by the cloud server 110. The system 100 is designed with a capability, that the authentication through the short range communication means is enabled only when the controller 102 confirms the state of the communication network 118 with the cloud server 110 is non-operational.
[0036] The system 100 and the method discloses gathering the location of the connected vehicle 112 and the user for plausibility and verification. Example, after the user is authenticated, if some other person takes the connected vehicle 112, then the system 100 recognizes the user and the connected vehicle 112 location not matching, and thereafter restricts function of the connected vehicle 112 through the controller 102, such as curtailment.
[0037] According to the present invention, the system 100 enables the connected vehicle 112 to be driven based on the conditions mentioned in the first state through the fifth state. The system 100 determines the states/ conditions and accordingly allows a suitable mode of authentication. Further, all the mode of authorization/authentication is continuously (configurable for intermittent checks instead of continuous to save power consumption) monitored with driver and vehicle GPS. If implausible then access is deactivated/curtailed. The controller 102,

the gateway unit 104, the mobile application are self-intelligent to handle situation of non-connectivity with the cloud server 110.
[0038] It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention. Many such embodiments and other modifications and changes in the embodiment explained in the description are envisaged. The scope of the invention is only limited by the scope of the claims.

We claim:
1. An access management system (100) for a fleet of connected vehicles (112),
said system (100) comprises:
a cloud server (110) in wireless communication with a controller (102) of each of said connected vehicles (112) of said fleet through a respective gateway unit (104), said wireless communication established over a communication network (118), characterized in that said system (100) configured to
authorize a user, requesting to use one of said connected vehicle (112) using a communication device (108), based on an authentication mode selected in dependence of state of said communication network (118) between said cloud server (110), and at least one of said communication device (108) and said gateway unit (104).
2. The system (100) as claimed in claim 1, wherein different authentication
mode for different states of communication network (118) are provided,
while a first state is detected, a corresponding first mode is selected for authorization, said first state corresponds to a connected communication network (118) between said cloud server (110) and both of said communication device (108) and said gateway unit (104), and said first mode comprises verification of a One Time Password (OTP) sent to a registered mobile number of said user with a code entered in a mobile application installed in said communication device (108) of said user;
while a second state is detected, a corresponding second mode is selected for authorization, said second state corresponds to a connected communication network (118), but only cellular network and no data network between said cloud server (110) and said communication device (108), wherein said second mode comprises verification of an OTP sent to the registered mobile number of said user with a code sent back as an Short Message Service (SMS) from said communication device (108) of said user;

while a third state is detected, a corresponding third mode is selected for authorization, said third state corresponds to nonfunctional communication network (118), both data network and said cellular network, between said cloud server (110) and said communication device (108), wherein said third mode comprises verification by logging-in said cloud server (110) through a web portal by using user credentials, said web portal is accessed by an auxiliary communication device having connected communication network (118) through any one of said data network and said cellular network;
while a fourth state is detected, a corresponding fourth mode is selected for authorization, said fourth state corresponds to nonfunctional communication network (118), both data network and said cellular network, between said cloud server (110) and both of said communication device (108) and said gateway unit (104), wherein said fourth mode comprises verification of user data by said controller (102), said user data transmitted from said communication device (108) through said gateway unit (104); and
while a fifth state is detected, a corresponding fifth mode is selected for authorization, said fifth state corresponds to any one of functional and nonfunctional communication network (118), wherein said fifth mode comprises verification of user biometrics by any one of said cloud server (110) and said controller (102), said user biometrics is recorded and transmitted by any one of said communication device (108), and an input device within said connected vehicle (112), wherein said transmission of user biometrics to said controller (102) is done through said gateway unit (104).
3. The system (100) as claimed in claim 1, wherein said authorization of said user is further verified by plausibility check of a current location of said connected vehicle (112) and said communication device (108), said current location is received from respective geo-positioning units over said communication network (118).

4. The system (100) as claimed in claim 2, wherein
said system (100) grants a complete access to said connected vehicle (112) when any one of said first mode and said second mode is used for authorization, wherein
said system (100) grants a partial access to said connected vehicle (112) when any one of said third mode and said fourth mode is used for authorization, wherein said partial access is convertible to said complete access, when at least one selected from any one of said first mode and said second mode, and a plausibility check, is performed upon reconnection of said communication network (118).
5. The system (100) as claimed in claim 2, wherein said communication between said communication device (108) and said gateway unit (104) is performed using any one selected from a group comprising a Bluetooth™, Near Field Communication (NFC) and InfraRed (IR).
6. A method for managing access to a fleet of connected vehicles (112), said method comprising the steps of:
receiving a request to use a connected vehicle (112) using a communication device (108), and
authorizing said user based on an authentication mode selected in dependence of state of a communication network (118) between a cloud server (110), and at least one of a communication device (108) and a gateway unit (104) of said connected vehicle (112).
7. The method as claimed in claim 6, wherein different authentication mode
for different states of communication network (118) are provided,
while said communication network (118) is detected in a first state, authorizing said user through a first mode, said first state corresponds to a connected communication network (118) between said cloud server (110)

and both of said communication device (108) and said gateway unit (104), and said first mode comprises verifying an One Time Password (OTP) sent to a registered mobile number of said user with a code entered in a mobile application installed in said communication device (108) of said user.
while said communication network (118) is detected in a second state, authorizing said user through a second mode, said second state corresponds to a connected communication network (118), but only cellular network and no data network between said cloud server (110) and said communication device (108), wherein said second mode comprises verifying an OTP sent to the registered mobile number of said user with a code sent back as an Short Message Service (SMS) from said communication device (108) of said user;
while said communication network (118) is detected in a third state, authorizing said user through a third mode, said third state corresponds to nonfunctional communication network (118), both data network and said cellular network, between said cloud server (110) and said communication device (108), and said third mode comprises verifying said user by logging-in said cloud server (110) through a web portal using user credentials, said web portal is accessed by an auxiliary communication device;
while said communication network (118) is detected in a fourth state, authorizing said user through a fourth mode, said fourth state corresponds to nonfunctional communication network (118), both data network and said cellular network, between said cloud server (110) and both of said communication device (108) and said gateway unit (104), and said fourth mode comprises verifying a user data received from said communication device (108) by a controller (102) through a gateway unit (104); and
while said communication network (118) is detected in a fifth state, authorizing said user through a fifth mode, said fifth state corresponds to any one of functional and nonfunctional communication network (118), and said fifth mode comprises verifying user biometrics by any one of said cloud server (110) and said controller (102) through said gateway unit (104), said

user biometrics is recorded and received from any one of said communication device (108) and an input device within said connected vehicle (112).
8. The method as claimed in claim 6, wherein said authentication of said user is further followed by checking plausibility of a current location of said connected vehicle (112) and said communication device (108), said current location is received from respective geo-positioning units over said communication network (118).
9. The method as claimed in claim 7, comprises granting a complete access to said connected vehicle (112) when any one of said first mode and said second mode is used for authorization, wherein said method also comprises granting a partial access to said connected vehicle (112) when any one of said third mode and said fourth mode is used for authorization, wherein said partial access is convertible to said complete access, when at least one selected from any one of said first mode and said second mode, and a plausibility check, is performed upon reconnection of said communication network (118).
10. The method as claimed in claim 7, wherein said communication between said communication device (108) and said gateway unit (104) is performed using any one selected from a group comprising a Bluetooth™, Near Field Communication (NFC) and InfraRed (IR).