WO2015161511A1

WO2015161511A1 - Method and device of providing a mobile terminal with door entry system access service and door entry system

Info

Publication number: WO2015161511A1
Application number: PCT/CN2014/076251
Authority: WO
Inventors: Wei Fu; Wei HOU; Renfeng ZHOU
Original assignee: Abb Technology Ltd
Priority date: 2014-04-25
Filing date: 2014-04-25
Publication date: 2015-10-29
Also published as: CN105122832A

Abstract

Embodiments of the present disclosure relate to a method and device for providing a mobile terminal with door entry system access service and a door entry system. In an embodiment of the present disclosure, the method comprises registering the mobile terminal in response to a register request from the mobile terminal; determining whether there is already media from a caller; forwarding a call request from the caller to the registered mobile terminal if there is already media from the caller; and forwarding the media from the caller to the registered mobile terminal over a channel for forwarding the media in response to a call response from the registered mobile terminal. With embodiments of the present disclosure, it can provide "plug and play" functionality so that the user can access the door entry system at any time, which greatly facilitates use of the mobile terminal as an indoor station, and improves usability and the user experience.

Description

METHOD AND DEVICE OF PROVIDING A MOBILE TERMINAL WITH DOOR ENTRY SYSTEM ACCESS SERVICE AND DOOR ENTRY SYSTEM FIELD OF THE INVENTION

[0001] Embodiments of the present disclosure generally relate to a door entry system, and more particularly relate to a method and device of providing a mobile terminal with door entry system (DES) access service and a door entry system. BACKGROUND OF THE INVENTION

[0002] Nowadays, door entry systems (DES) are very popular especially in residence buildings. The DES is arranged to provide a security protection centrally, safely and efficiently. On the other hand, mobile terminals like smart phone, tablet, and etc. are becoming more and more prevailing in our daily life. So it will be very beneficial if these mobile terminals could access a DES and be used as an indoor station.

[0003] However, in existing solutions that allow a mobile terminal to access a DES, the mobile terminal is only treated as a normal indoor station without considering properties of the mobile terminal, especially its mobility. Accordingly, they are involved in a lot of drawback such as bad user experience, poor safety, high data traffic consumption, and so on.

SUMMARY OF THE INVENTION

[0004] To this end, the present disclosure provides a new solution for providing mobile terminals with door entry system access service so as to solve or at least partially mitigate at least a part of problems in the prior art.

[0005] According to a first aspect of the present disclosure, there is provided a method of providing a mobile terminal with door entry system access service. The method comprises registering a mobile terminal in response to a register request from the mobile terminal; determining whether there is already media from the caller; forwarding a call request from a caller to the registered mobile terminal if there is already media from the caller; and forwarding the media from the caller to the registered mobile terminal over a channel for forwarding the media in response to a call response from the registered mobile terminal.

[0006] In an embodiment of the present disclosure, the method may further comprise binding the registered mobile terminal to the channel for forwarding the media from the caller before forwarding the media from the caller to the registered mobile terminal.

[0007] In another embodiment of the present disclosure, the register request may be received after the door entry system goes into a ringing status and wherein the call request may be sent only if the door entry system is still in the ringing status.

[0008] In a further embodiment of the present disclosure, the method may further comprise: unbinding, in response to a self-hang-up request from a requesting mobile terminal, the requesting mobile terminal from the channel for forwarding the media from the caller; and stopping forwarding the media from the caller to the requesting mobile terminal.

[0009] In a still further embodiment of the present disclosure, the method may further comprise deleting the channel for forwarding the media from the caller if there is no device bounded therewith.

[0010] In a yet further embodiment of the present disclosure, the method may further comprise: managing device information on authorized mobile terminals; managing user information on authorized users and their respective privileges; and performing safety authentication on a register request and/or an operation request from a mobile terminal based on the device information and the user information.

[0011] According to a second aspect of the present disclosure, there is further provided a device for providing a mobile terminal with door entry system access service. The device may comprise a terminal registering unit, a proxy unit, and a media forwarding unit. The terminal registering unit is configured to register a mobile terminal in response to a register request from the mobile terminal. The proxy unit is configured to determine whether there is already media from a caller and forward a call request from a caller to the registered mobile terminal if there is already media from the caller. The media forwarding unit is configured to forward the media from the caller to the registered mobile terminal a channel for forwarding the media in response to a call response from the registered mobile terminal. [0012] According to a third aspect of the present disclosure, there is provided a door entry system. The door entry system may comprise an outdoor station for using by a caller to make a call; an indoor station for using by a user to answer the call; a server for managing the call made between the outdoor station and the indoor station; and a router for enabling the indoor station and a mobile terminal and to communicate with the server. Especially, the server comprises an access management module, which is configured to register a mobile terminal in response to a register request made by the mobile terminal; determine whether there is already media from the caller; forward a call request from the caller to the registered mobile terminal if there is already media from the caller; and bind the registered mobile terminal to a channel for forwarding the media from the caller and forwarding the media from the caller to the registered mobile terminal over the channel, in response to a call response from the registered mobile terminal.

[0013] According to a fourth aspect of the present disclosure, there is further provided, a computer-readable storage media with computer program code embodied thereon, the computer program code configured to, when executed, cause an apparatus to perform actions in the method according to any embodiment in the first aspect of the present disclosure.

[0014] According to a fifth aspect of the present disclosure, there is provided a computer program product comprising a computer-readable storage media according to the fourth aspect of the present disclosure.

[0015] In embodiments of the present disclosure, a mobile terminal may issue a register request at any time to access a door entry system and the media from a caller can be forwarded to the mobile terminal even if the communication is ongoing. Therefore, with embodiments of the present disclosure, it can provide "plug and play" functionality so that the user can access the door entry system at any time, which greatly facilitates use of the terminal as an indoor station, and improves usability and the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features of the present disclosure will become more apparent through detailed explanation on the embodiments as illustrated in the description with reference to the accompanying drawings, throughout which like reference numbers represent same or similar components and wherein:

[0017] Fig. 1 schematically illustrates a network topology of a DES in which embodiments of the present disclosure can be implemented;

[0018] Fig. 2 schematically illustrates a flow chart of a method for providing a mobile terminal with DES access service according to an embodiment of the present disclosure;

[0019] Fig. 3 schematically illustrates a signaling diagram of a specific implementation of "plug and play" functionality as provided in an embodiment of the present disclosure;

[0020] Fig. 4 schematically illustrates a flow chart of a method for providing a mobile terminal with DES access service according to another embodiment of the present disclosure;

[0021] Fig. 5 schematically illustrates a signaling diagram of a specific implementation of "self-hang-up" functionality as provided in an embodiment of the present disclosure;

[0022] Fig. 6 schematically illustrates a flow chart of a method for providing a mobile terminal with DES access service according to a further embodiment of the present disclosure;

[0023] Fig. 7 schematically illustrates a signaling diagram of a specific implementation of "privilege control" functionality as provided in an embodiment of the present disclosure;

[0024] Fig. 8A schematically illustrates a block diagram of a device for providing a mobile terminal with DES access service according to an embodiment of the present disclosure;

[0025] Fig. 8B schematically illustrates a block diagram of a device for providing a mobile terminal with DES access service according to another embodiment of the present disclosure;

[0026] Fig. 9 schematically illustrates a block diagram of a door entry system according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF EMBODIMENTS [0027] Hereinafter, solutions as provided the present disclosure will be described in details through embodiments with reference to the accompanying drawings. It should be appreciated that these embodiments are presented only to enable those skilled in the art to better understand and implement the present disclosure, not intended to limit the scope of the present disclosure in any manner.

[0028] Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field, unless explicitly defined otherwise herein. All references to "a/an/the/said [element, device, component, means, step, etc]" are to be interpreted openly as referring to at least one instance of said element, device, component, means, unit, step, etc., without excluding a plurality of such devices, components, means, units, steps, etc., unless explicitly stated otherwise. Besides, the indefinite article "a/an" as used herein does not exclude a plurality of such steps, units, modules, devices, and objects, and etc.

[0029] Next, reference will be made to Fig. 1 to describe an example network topology of door entry system in which embodiments of the present disclosure can be implemented. As illustrated in Fig. 1, for example in apartment 110, there is provided a server 120, which can also be called as household server. The server 120 is connected to a door entry system 130 at one hand and connected to a router 140 on the other hand. An indoor station 150 is wired to the router 140 which is also connected to internet 180. Thus, the indoor station 150 can communicate with the server 120 via the router 140. However, it should be noted that it is also possible to connect the indoor station 150 to the router 140 wirelessly, for example through WiFi, or other wireless communication technology. The mobile terminals 160-1, 160-2, such as smart phone, tablet, and so on, may also be connected to the server 120 via router 140. For example, for the mobile terminal 160-1 like a smart phone, which is located inside the apartment 110 covered by WiFi signals from the router 140, it can be connected to the router 140 via for example WiFi. The mobile terminal 160-2, which is located outside the apartment or an area that can not receive WiFi signals from the router 140, can first access Internet 180 through for example 3G/4G network, or other WiFi network and in turn, it can be connected to the server 120 via router 140 which is connected to the Internet 180.

[0030] In this network topology, the server 120 is a household server located inside the apartmentllO; however, it is also possible to locate the server 120 at any other place near the apartment or remote therefrom as long as the router can be connected thereto.

[0031] As mentioned hereinbefore, in the existing solutions, which allow a mobile terminal to access a door entry system, the mobile terminal is treated as a normal indoor station without considering properties of the mobile terminal, especially its mobility. Particularly, the inventors notice in the existing solutions that the mobile terminal is required to keep online with the door entry system so as to ensure that the mobile terminal can receive a call request from the door entry system when a caller make a call. However, the mobile terminal may power off or the wireless connection may be disabled. In such cases, if a call is coming or other traditional indoor station is ringing, it is not possible for a user to use the mobile terminal to take the call. Moreover, if the user accesses the door entry system with his/her mobile terminal to the door entry system and is not convenient to pick up the call, he/she has to hang up the call or mute the call. This is not ideal because hanging up might lead to another device such the indoor station to be terminated at the same time (other families can not use other devices to answer the call) whereas muting will cause unless consumption of data traffic, especially when the mobile terminal is connected to the door entry system via 3G/4G network. In addition, it is also involved a security issue since if the mobile terminal such a smart phone is lost or gotten by vicious users, they might illegally access the door entry system through for example Internet remote accessing.

[0032] In view of these, in the present disclosure, the inventors propose a solution which may fully consider the characters of mobile terminals. Hereinafter, example embodiments of the present disclosure will be described in detail.

[0033] First, reference will be made to Fig. 2 to describe the method as provided in the present disclosure according to an embodiment of the present disclosure. As illustrated in Fig. 2, first at step S201, when a register request is received from a mobile terminal such as a smart phone, the mobile terminal may be registered in a server. In embodiments of the present disclosure, this register request can be issued by the mobile terminal at any time, especially after the user has heard the ring. Usually, the user will not realize whether they are online until the indoor station or his/her mobile terminal rings. Thus, it is a better time to request for accessing the door entry system. Upon receipt of the register quest from the mobile terminal, the server knows that the electronic desires to access the entry system and it may, for example, contain ID of the mobile terminal into a register list so as to register the mobile terminal in the server.

[0034] The register list may include the list of devices which are connected to the door entry system and are on line. In the server, there is provided with a mechanism or means to detect connectivity of devices. For example, the connectivity may be monitored by transmitting a sounding signal to devices connected thereto. If no response is sent back, it means that the device is off line and the ID of the device may be removed from the register list. On the other hand, when a new device such as a smart phone is connected, the ID of the new device may be added into the register list.

[0035] At step S202, it may be determined whether there is already media from the caller. After the mobile terminal has been registered, it may be checked whether there is a media communication regarding to a call request. For example, it is determined whether a channel for the media communication has been created. In embodiments of the present disclosure, a channel is created when a call request is responded by a registered device. The channel is to be used to transfer video and audio during a ringing state and a talking state and it will be destroyed after hanging up. Therefore, the checking of channel may reflect whether the newly registered mobile terminal can join an existing media communication. If there is such a channel, it means that the mobile terminal may also receive the media over the channel. However, for a purpose of privacy, generally, it is not allowed to join a call when another user is using a device to answer the call. Therefore, in an embodiment of the present disclosure, it may be determined whether the door entry system is still in a state of ringing. If the door entry system is in a state of ringing, it means the newly registered mobile terminal can join the media communication. In such a case, a call request from the original caller can be transmitted to the registered mobile terminal to inform the mobile terminal there is an ongoing communication.

[0036] Then, at step S203, a call request from a caller may be forwarded to the registered mobile terminal if there is already media from the caller. If the registered mobile terminal is still on line, it will send back a call response to the server in response to receipt of the call request forwarded by the server.

[0037] Afterwards, at step S204, the media from the caller may be forwarded by the server to the registered mobile terminal over the channel for forwarding the media, in response to the call response from the registered mobile terminal. For example, if the door entry system is still in the state of ringing, the video from the caller can be forwarded to the registered mobile terminal.

[0038] In such a way, even after the channel for media communication between a caller and the indoor station has been established, it is still possible for a mobile terminal to access the door entry system. That is to say, in embodiments of the present disclosure, there is provided "plug and play" functionality. Or in other word, the time that the mobile terminal asks for connecting to the door entry system will not affect on whether it can be access the door entry system or not. Therefore, even if the user does not realize network disconnection of his/her mobile terminal until he/she heard the ring, he/she still can connect his/her mobile terminal to the door entry system with embodiments of the present disclosure.

[0039] In addition, before forwarding the media to the registered mobile terminal, it may bind the registered mobile terminal to the channel created for forwarding the media. In such a way, the server may clearly learn how many devices and which device are associated with the ongoing media communication. Accordingly, it may manage the media communication in a finer fashion and facilitate the management and maintenance of the channel. For example, there may be maintained a binding table which contains entry of an ID for a channel and IDs of devices which is receiving media on the channel. If a new device such as mobile terminal is to bind with the channel, the ID of the new device may be added to the table so as to establish association between the new device and the channel.

[0040] Hereinafter, to make the skilled in the art to understand the solution as provided in the present disclosure completely and thoroughly, reference will be made to Fig. 3 to explain a specific implementation of "plug and play" functionality as provided in embodiments of the present disclosure.

[0041] As illustrated in Fig. 3, first, at step S301, a caller 310 make a call and thus the call request is sent to the server 320 at step S302. At the server 320, the server 320 will retrieve a register list which records registered and on-line devices at step S303. At this time, no mobile terminals are included in the register list either because they are not registered yet or because they are registered but off line now due to network disconnection. Thus, the server 320 determines that the indoor station 330 is the only device in the register list. Accordingly, the server 320 forwards the call request to the indoor station at step S304 and upon receipt of the call request, the indoor station 330 sends a call response to the server 320 at step S305. In response to the call response from the indoor station 330, the server 320 creates a Real-time Transport Protocol (RTP) channel for the incoming media communication and binds the indoor station 330 to the created RTP channel at step S306. After that, the server 320 forwards the call response to the caller 310 at step S307 and the caller 310 starts to send the video to the server 320. The server 320 forwards based on the binding, the video to the indoor station 330 at step S308 and the indoor station starts ringing at step S309.

[0042] When it starts ringing, the user might realize that his mobile terminal such as phone 340 does not connect to the door entry system and thus he connects his phone 340 to network and perform a register operation at step S310. Afterwards, the phone 340 sends a register request at step S311. As a response, the server 320 sends a register response to the phone 340 at step S312 and adds the phone 340 into the register list at step S313. Next, at step S314 it checks whether the door entry system is still in a ringing state. If yes, the server 320 forwards a call request from the original caller to the phone 340 at step S315 and the phone 340 sends back a call response at step S316. At step S317, the server 320 binds the phone 340 to the created RTP channel in response to the call response from the phone 340. After the binding, the server 320 may forward the video to both the indoor station 330 and the phone 340 at step S318 because the newly registered phone 340 is already bound with the channel. Next the phone 340 starts ringing and reminds the user that there is a call from the caller. In such a way, the user can access the door entry system even if the door entry system is already in a ringing status.

[0043] Besides, in some embodiments of the present disclosure, there is further provided "self-hang-up" functionality, which will be described hereinafter with reference to Fig. 4.

[0044] As illustrated in Fig. 4, at step S401, when the server receives a self-hang-up request from a mobile terminal, the requesting mobile terminal may be unbound from the media communication channel. In the present disclosure, it may use a new self-hang-up command or reuse the hang-up instruction but with different parameters. During ringing, if the server receives the self-hang-up command from a mobile terminal, the server can know that the mobile terminal requests to stop its communication with the caller. In such a case, the server may unbind the mobile terminal from the channel created for forwarding the commutation. For example, an entry associating the ID of the mobile terminal with the channel may be removed from the binding table in the server. Then, at step S402, it stops forwarding the video to the requesting mobile terminal since now it is not bounded with the channel. In such a way, the mobile terminal will not receive the media from the caller any longer. Besides, it may further determine whether there is another device (other mobile terminal or indoor station) bounded to the channel. If yes, the media communication between the caller and the device will continue; if no, it means there is no other device to use the channel and thus the channel can be deleted at step S403.

[0045] With this feature, each mobile terminal may only terminate the communication between itself and the caller, while the communication between other device and the caller will not be affected. This is rather beneficial especially when the user is not convenient to answer the call using his mobile terminals. Besides, it can also save the data traffic consumption compared to the existing solution.

[0046] Next, detailed description will be made to a specific implementation of self -hang-up functionality. As illustrated in Fig. 5, when a caller 510 makes a call to an apartment, both phone 530-1 and phone 530-2 will go into a ringing state. Specifically, at step S501, the caller 510 makes a call and then a call request is sent to the server 520 at step S502. After that, at step S503, the server 520 checks the register list and learns that there are two mobile terminals (i.e., the phone 530-1 and the phone 530-2) registered in the register list. Accordingly, the server 520 will forward the call request to both the phone 530-1 and the phone 530-2 at steps S504a and S504b respectively. Upon receipt of the call request, each of the phones 530-1 and 530-2 will send a call response to the server. When the server 520 receives a call response from for example the phone 530-1, the server creates an RTP channel for forwarding media from the caller and binds the phone 530-1 to the channel at step S506. When it receives a call response from the phone 530-2, the server 520 binds the phone 530-2 to the RTP channel at step S507. Afterwards, the server 520 sends a call response to the caller ate step S508. In response to the call response from the server 520, the video from the caller 510 is transmitted to the server 520 and the server 520 forwards, based on the binding, the video to both phone 530-1 and phone 530-2 over the RTP channel at step S509. Next the phones 530-1 and 530-2 begin to ring at step S510a and 510b respectively.

[0047] Next, if a self-hang-up operation is performed at phone 530-1 by a user

(step S511), a self-hang-up request will be sent to the server 520 at step S512 and upon receipt of the self-hang-up request, the server 520 sends back a self-hang-up response to phone 530-1 at step S513 and the phone 530-1 returns to idle at step 514. At the same time, the server 520 unbinds phone 530-1 from the RTP channel at step S515. After that, at step S516, it checks the number of users bound to the RTP channel, if this number is higher than zero, then the server 520 will continue forwarding the video to other device at step S517. However, when the server 520 forwards the video, it will only forward the video to the phone 530-2 because the phone 530-1 is not bounded with the channel any more. Then, if at the phone 530-2, a self-hang-up operation is also implemented at step S518, a self-hang-up request will also be sent to the server 520 at step S519 , and the server 520 send back a self -hang-up response at step S520, which will cause the phone 530-2 to enter to idle state at step S521. Next, at step S522, phone 530-2 will be unbound from the RTP channel and at step S523 it checks the number of users bound to the RTP channel. If there are no other user bound to the RTP channel (i.e., the number of the users bounded to the RTP channel is not higher than zero), the RTP channel will be deleted at step S524. Afterwards, the server 520 will send an on-hook request to the caller 510. The caller 510 returns an on-hook response at step S526, and both the caller 510 and the server 520 go into an idle state at steps S527 and 528 respectively.

[0048] In addition, to address the safety issues, in embodiments of the present disclosure, there is further "privilege control" functionality, which will be described with reference to Fig. 6. As illustrated in Fig. 6, at step S601, device management will be implemented at the server. For any mobile terminals desiring to access the door entry system, their respective unique IDs will be added into a privilege control list at the server. Accordingly, the server may maintain the device information on authorized mobile terminals and any device not included in the privilege control list can not be allowed to access the door entry system. [0049] At step S602, user management may also be done at the server. For a new user, who is going to use the authorized electronic device, a user account may be created. Particularly, each user may have his/her own user name and private password and they be assigned certain access privileges such as monitor, snapshot, unlock and etc. By means of user management, it is possible to enable different users to have different authority. For example, a kid may be given a limited operation right for the door entry system for a purpose of safety.

[0050] Based on the above device and user information, upon receiving a register request and/or an operation request, safety authentication may be made at step S603. Particularly, when an authorized device desires to access the door entry system and sends a register request to the server, wherein the request contains ID of the mobile terminal, user name and password. The server deals with the register request based on the device information and the user information to check whether the right can access the door entry system. Specifically, it first determines whether the ID of the mobile terminal is included in the privilege list and then determines whether the user name is valid and the password is right. Only if the user passes the authorization, the server will register the mobile terminal in register list and send register response to the mobile terminal. On the other hand, when the user send an operation request to the user, the operation request may contain the ID of the mobile terminal, user name and ID of operation. After receiving the operation request, the server will check whether the ID is included in the privilege list and whether the user has the privilege to perform the operations based on the device information and the user information. Only if the ID of the mobile terminal is included in the privilege control list and the user has privilege to perform the operation, the server allows the operation to be done and sends an operations response to the user.

[0051] Besides, the user can control the access privilege of electronic smart device at the server at any time, by modifying the password, and privilege of user and updating the device ID in the privilege control list.

[0052] Next, reference will be made to Fig. 7, which illustrates a specific implementation of the access privilege control functionality according to an embodiment of the present disclosure. As illustrated, at step S701, device management is done at the server 710. The ID of each mobile terminals, such as smart phones, tablet, etc., are added into a privilege control list in the server. The user may also delete a mobile terminal from the privilege control list. In such a way, the server will maintain information on all devices that are authorized to access door entry system. At step S702, the user related information management is done at the server. For each authorized device, one or more users may be created and a password may be set to each user. Each user may be allocated respective access privileges such as monitor, snapshot, unlock, etc. The user's name, password and access privileges are maintained at the server. At the server, it is also possible for the user to change or modify the information, such as password, access privileges, etc.

[0053] When a phone 720 connects to the network and is going to register in the server 710 at step S703, it sends a register request to the server at step S704, wherein the register request contains ID of the phone 720, a user name and a password. The server 710 will deal with the register request to perform safety authorization. Specifically, the server 710 will determine that if the ID of the phone is contained in the privilege control list maintained in the server. If no, the phone will fail the authorization and be refused to access the door entry system; if yes, i.e., its ID is contained in privilege control list, it is further determined whether the user name and the password are valid. The phone can be registered in the server only when both the user name and the password are valid; otherwise, the user will be refused to connect to the door entry system as well. If the server allows the phone 720 to access the door entry system, it will send a register response to the phone 720 to inform that it can access the door entry system.

[0054] If the user desires to perform an operation (such as monitoring, unlock, snapping, etc.) at step S707, an operation request will be transmitted to the server 710 at step S708. The operation request contains the ID of phone 720, a user name and the requested operation. When the server 710 receives the operation request, it will deal with the operation request at step S709 to check, based on device information and the user information, if the user has privilege to perform the operation. If it is determined that the ID of the phone 720 is contained in the privilege control list and the user has the privilege, the corresponding operation will be allowed and an operation response is sent to the phone 720 at step S710.

[0055] With this "privilege control" functionality, it may provide an improved security to door entry system and it may greatly reduce the possibility of illegal accessing by vicious users.

[0056] In embodiments of the present disclosure, there is further provided a device for providing a mobile terminal with door entry system access service. Hereinafter, reference will be made to Figs. 8A and 8B to describe devices according to example embodiments of the present disclosure.

[0057] As illustrated in Fig. 8A, device 800 which is configured to provide a mobile terminal with door entry system access service, comprises a terminal registering unit 811, a proxy unit 812, and a media forwarding unit 813. The terminal registering unit 811 is configured to register, in response to a register request from a mobile terminal, the mobile terminal. The proxy unit 812 is configured to determine whether there is already media from a caller and forward a call request from a caller to the registered mobile terminal if there is already media from the caller. The media forwarding unit 813 is configured to forward the media from the caller to the registered mobile terminal over a channel for forwarding the media in response to a call response from the registered mobile terminal.

[0058] Additionally, the device 800 may further comprise a channel management unit 814, which is configured to bind the registered mobile terminal to the channel for forwarding the media from the caller, before the media forwarding unit 813 forwards the media from the caller to the registered mobile terminal. In embodiments of the present disclosure, the register request may be received after the door entry system goes into a ringing status, i.e., the channel for forwarding media between the caller and indoor station has been created. In such a case, the proxy unit 812 may be further configured to send the call request only if the door entry system is still in the ringing status.

[0059] Besides, in embodiment of the present disclosure, the channel management unit 814 may be further configured to unbind, in response to a self -hang-up request from a requesting mobile terminal, the requesting mobile terminal from the channel for forwarding the media from the caller. When the requesting mobile terminal is unbound with the channel, the media unit 813 will stop forwarding the media from the caller to the requesting mobile terminal. Furthermore, if it is checked that there is no device bounded therewith, the channel management unit 814 may delete the channel for forwarding the media from the caller.

[0060] Fig. 8B schematically illustrates a block diagram of a device for providing a mobile terminal with DES access service according to another embodiment of the present disclosure. As illustrated, the device 800 may further comprise a device information management unit 821, a user information management unit 822, and a safety authentication unit 823. The device information management unit 821 is configured to manage device information on authorized mobile terminals. The user information management unit 822 is configured to manage user information on authorized users and their respective privileges. The safety authentication unit 823 is configured to perform safety authentication on at least one of a register request and an operation request from a mobile terminal based on the device information and the user information.

[0061] Hereinafter, a door entry system according to an embodiment of the present disclosure will be described with reference to Fig. 9. In Fig. 9, door entry system 900 comprises an outdoor station 930 for using by a caller to make a call; an indoor station 950 for using by a user to respond the call; a server 920 for managing the call from the outdoor station; and a router 940 for enabling a mobile terminal 960 and the indoor station 950 to communicate with the server 920, wherein the server 920 comprises an access management module 921. The access management module 921 is configured to register a mobile terminal in response to a register request made by the mobile terminal; determining whether there is already media from a caller; forward a call request from the caller to the registered mobile terminal if there is already media from the caller; and bind the registered mobile terminal to the channel for forwarding the media from the caller; and forwarding the media from the caller to the registered mobile terminal over the channel, in response to a call response from the registered mobile terminal.

[0062] In an embodiment of the present disclosure, the server 920 may further comprise a self -hang-up handling module 922. The self-hang-up handling module 922 may be configured to: unbind, in response to a self-hang-up request made by a requesting mobile terminal, the requesting mobile terminal from the channel for forwarding the media from the caller; stop forwarding the media from the caller to the requesting mobile terminal; and delete the channel for forwarding the media from the caller if there is no terminal bounded therewith.

[0063] In another embodiment of the present disclosure, the server 920 may further comprise a privilege control module 923. The privilege control module 923 is configured to manage device information on authorized mobile terminals; manage user information on authorized users and their respective privileges; and perform safety authentication on at least one of a register request and an operation request from a mobile terminal based on the device information and the user information.

[0064] The device and the door entry system as provided in embodiments of the present disclosure have been described with reference to the accompanying drawings. However, it may be also appreciated that all these units, modules described herein performs similar operations as described hereinbefore with regarding to the method. Accordingly, for details about these operations, please refer to the description about the method with reference to Figs. 1 to 7.

[0065] Hereinabove, embodiments of the present disclosure have been described in details through embodiments with reference to the accompanying drawings. It should be appreciated that, while this specification contains many specific implementation details, these details should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features that may be specific to particular embodiments of particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable sub-combination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a sub-combination or variation of a sub-combination.

[0066] Various modifications, adaptations to the foregoing exemplary embodiments of this disclosure may become apparent to those skilled in the relevant arts in view of the foregoing description, when read in conjunction with the accompanying drawings. Any and all modifications will still fall within the scope of the non-limiting and exemplary embodiments of this disclosure. Furthermore, other embodiments of the disclosures set forth herein will come to mind to one skilled in the art to which these embodiments of the disclosure pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings.

[0067] Therefore, it is to be understood that the embodiments of the disclosure are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are used herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

WHAT IS CLAIMED IS:

1. A method of providing a mobile terminal with door entry system access service, comprising

registering a mobile terminal in response to a register request from the mobile terminal;

determining whether there is already media from a caller;

forwarding a call request from the caller to the registered mobile terminal if there is already media from the caller; and

forwarding the media from the caller to the registered mobile terminal over a channel for forwarding the media in response to a call response from the registered mobile terminal.

2. The method of Claim 1, further comprising:

binding the registered mobile terminal to the channel for forwarding the media from the caller before forwarding the media from the caller to the registered mobile terminal.

3. The method of Claim 1 or 2, wherein the register request is received after the door entry system goes into a ringing status and wherein the call request is sent only if the door entry system is still in the ringing status.

4. The method of any one of Claims 1 to 3, further comprising:

unbinding, in response to a self-hang-up request from a requesting mobile terminal, the requesting mobile terminal from the channel for forwarding the media from the caller; and

stopping forwarding the media from the caller to the requesting mobile terminal.

5. The method of Claim 4, further comprising:

deleting the channel for forwarding the media from the caller if there is no device bounded therewith.

6. The method of any one of Claims 1 to 5, further comprising:

managing device information on authorized mobile terminals;

managing user information on authorized users and their respective privileges; and performing safety authentication on a register request and/or an operation request from a mobile terminal based on the device information and the user information.

7. A device for providing a mobile terminal with door entry system access service, comprising

a terminal registering unit, configured to register a mobile terminal in response to a register request from the mobile terminal;

a proxy unit, configured to determine whether there is already media from a caller and forward a call request from the caller to the registered mobile terminal if there is already media from the caller; and

a media forwarding unit, configured to forward the media from the caller to the registered mobile terminal over a channel for forwarding the media in response to a call response from the registered mobile terminal.

8. The device of Claim 7, further comprising

a channel management unit configured to bind the registered mobile terminal to the channel for forwarding the media from the caller, before the media forwarding unit forwards the media from the caller to the registered mobile terminal.

9. The device of Claim 7 or 8, wherein the register request is received after the door entry system goes into a ringing status and wherein the proxy unit is further configured to send the call request only if the door entry system is still in the ringing status.

10. The device of Claim 8, wherein the channel management unit is further configured to unbind, in response to a self-hang-up request from a requesting mobile terminal, the requesting mobile terminal from the channel for forwarding the media from the caller.

11. The device of Claim 10, wherein the channel management unit is further configured to delete the channel for forwarding the media from the caller if there is no device bounded therewith.

12. The device of Claims 7 to 11, further comprising:

a device information management unit, configured to manage device information on authorized mobile terminals;

a user information management unit, configured to manage user information on authorized users and their respective privileges; and

a safety authentication unit configured to perform safety authentication on at least one of a register request and an operation request from a mobile terminal based on the device information and the user information.

13. A door entry system, comprising

an outdoor station for using by a caller to make a call;

an indoor station for using by a user to answer the call;

a server for managing the call between the outdoor station and the indoor station; and

a router for enabling the indoor station and a mobile terminal to communicate with the server,

wherein the server comprises an access management module configured to:

register a mobile terminal in response to a register request made by the mobile terminal;

determine whether there is already media from the caller;

forward a call request from the caller to the registered mobile terminal if there is already media from the caller; and

bind the registered mobile terminal to a channel for forwarding the media from the caller and forwarding the media from the caller to the registered mobile terminal over the channel, in response to a call response from the registered mobile terminal.

14. The door entry system of Claim 13, wherein the server further comprises a self -hang-up handling module configured to: unbind, in response to a self-hang-up request made by a requesting mobile terminal, the requesting mobile terminal from the channel for forwarding the media from the caller;

stop forwarding the media from the caller to the requesting mobile terminal; and delete the channel for forwarding the media from the caller if there is no terminal bounded therewith.

15. The door entry system of Claim 13 or 14, wherein the server further comprises a privilege control module configured to

manage device information on authorized mobile terminals;

manage user information on authorized users and their respective privileges; and perform safety authentication on at least one of a register request and an operation request from a mobile terminal based on the device information and the user information.