US20140220938A1 - Enterprise network and femtocell thereof - Google Patents
Enterprise network and femtocell thereof Download PDFInfo
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- US20140220938A1 US20140220938A1 US14/248,110 US201414248110A US2014220938A1 US 20140220938 A1 US20140220938 A1 US 20140220938A1 US 201414248110 A US201414248110 A US 201414248110A US 2014220938 A1 US2014220938 A1 US 2014220938A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
- H04W12/062—Pre-authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/16—WPBX [Wireless Private Branch Exchange]
Abstract
An enterprise network is disclosed. The enterprise network includes at least one site. The site includes an authorizing unit, an enterprise private branch exchange (PBX), and a plurality of femtocells. After a first femtocell of the plurality of femtocells receives a voice/data signal from an enterprise-authenticated handset and the authorizing unit authorizes the voice/data signal, the first femtocell distinguishes a destination of the voice/data signal and routes the voice/data signal to the destination.
Description
- This application is a divisional of co-pending U.S. patent application Ser. No. 13/137,570 filed on Aug. 26, 2011, which claims the benefit of U.S. Provisional Application No. 61/377,928 filed on Aug. 28, 2010, the entire contents of all of the above applications are hereby incorporated by reference
- 1. Field of the Invention
- The invention relates to a cellular network, in particular, to an enterprise network and a femtocell designed for the enterprise network.
- 2. Description of the Prior Art
- Conventional cellular network includes multiple elements for authentication, network management, auditing, and other functions. For example, the home location register (HLR) and the visiting location register (VLR) function as database servers providing user profiles including subscriber information; the authentication center (AuC) functions as the authentication server.
- Femtocell is a miniature basestation supporting near-stationary communications between handsets using cellular technologies. Of course, enterprise market is also an important market of femtocell. However, in the enterprise network, authentication and subscriber information are often tightly guarded by companies for security reasons. This is because that most companies are unwilling to open or out-source the management of such crucial information to outsiders.
- Since the cellular network protocol is often highly secured and self-contained, it is hard to integrate the existing enterprise level voice/data network and femtocell. This mentality barred the 3G operators from infiltrating the enterprise market. Above all, a solution is necessary for the enterprise to keep the ownership of the secure information (e.g., authentication, subscriber information) and the operator to provide an enterprise level solution through the use of femtocells.
- Therefore, a scope of the invention is to provide an enterprise network and a femtocell designed for the enterprise network to solve the above-mentioned problems.
- A preferred embodiment of the invention is an enterprise network. In this embodiment, the enterprise network includes a first site. The first site includes an authorizing unit, an enterprise private branch exchange (PBX), and a plurality of femtocells. After a first femtocell of the plurality of femtocells receives a voice/data signal from a first enterprise-authenticated handset and the authorizing unit authorizes the voice/data signal, the first femtocell distinguishes a destination of the voice/data signal and routes the voice/data signal to the destination.
- In an embodiment, the first site can further include a femtocell gateway for allowing and controlling a handover between two of the plurality of femtocells.
- In an embodiment, if the destination of the voice/data signal is an enterprise internal extension station of the first site, the first femtocell routes the voice/data signal to the enterprise internal extension station through the enterprise PBX.
- In an embodiment, if the destination of the voice/data signal is a second enterprise-authenticated handset of the first site, the first femtocell routes the voice/data signal to the second enterprise-authenticated handset through the enterprise PBX and a second femtocell corresponding to the second enterprise-authenticated handset.
- In an embodiment, if the destination of the voice/data signal is out of the first site, the first femtocell routes the voice/data signal to an operator network.
- In an embodiment, the enterprise network further includes a second site. The first site communicates with the second site through an internet/a public data network (PDN) or any private wired or wireless communication link such as fiber, E1, T1, etc. The first site further includes an enterprise data gateway coupled to the enterprise PBX. If the destination of the voice/data signal is the second site, the first femtocell will route the voice/data signal to the second site through the enterprise PBX, the enterprise data gateway, and the internet/PDN.
- In an embodiment, the second site includes an enterprise private branch exchange (PBX) and an enterprise data gateway. When the enterprise data gateway of the second site receives the voice/data signal from the internet/PDN, the enterprise data gateway of the second site routes the voice/data signal to the enterprise PBX of the second site. If the destination of the voice/data signal is an enterprise internal extension station of the second site, the enterprise PBX of the second site will route the voice/data signal to the enterprise internal extension station of the second site.
- In an embodiment, the second site further includes a plurality of femtocells. If the destination of the voice/data signal is an enterprise-authenticated handset of the second site, the enterprise PBX of the second site will route the voice/data signal to the enterprise-authenticated handset of the second site through one of the plurality of femtocells of the second site corresponding to the enterprise-authenticated handset of the second site.
- In an embodiment, the first site further includes an equipment authenticating unit coupled to the first femtocell. The first enterprise-authenticated handset is authenticated by the equipment authenticating unit according to an ID of the first enterprise-authenticated handset, and the ID of the first enterprise-authenticated handset is an international mobile equipment identity (IMEI) or an international mobile subscriber identity (IMSI).
- Another preferred embodiment of the invention is a femtocell applied in a site of an enterprise network. In this embodiment, the site includes an authorizing unit and an enterprise private branch exchange (PBX). The femtocell includes a communicating unit and a distinguishing unit. The communicating unit receives a voice/data signal from a first enterprise-authenticated handset and transmits the voice/data signal to the authorizing unit for authorization. After the voice/data signal is authorized by the authorizing unit, the distinguishing unit distinguishes a destination of the voice/data signal and the communicating unit routes the voice/data signal to the destination.
- Compared to the prior art, the invention discloses an enterprise network and a femtocell designed for the enterprise network to outline innovative ways to integrate femtocell with the latest PBX technologies such as H.323, SIP, or other data/voice communication protocols. It provides a solution for the enterprise to keep the ownership of the secure information (e.g., authentication, subscriber information) and the operator to provide an enterprise level solution through the use of femtocells.
- Therefore, 3G operators can use the technologies of the invention to infiltrate the enterprise market more easily.
- The advantage and spirit of the invention may be understood by the following detailed descriptions together with the appended drawings.
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FIG. 1 illustrates a schematic diagram of the enterprise voice/data network in the invention. -
FIG. 2 illustrates a functional block diagram of thefemtocell 10 shown inFIG. 1 . -
FIG. 3 illustrates a schematic diagram of the signaling/data path from an enterprise-authenticated handset to an enterprise internal extension station. -
FIG. 4 illustrates a schematic diagram of the signaling/data path from an enterprise-authenticated handset to another enterprise-authenticated handset. -
FIG. 5 illustrates a schematic diagram of the signaling/data path from the first site to the second site. - The invention discloses an enterprise network and a femtocell designed for the enterprise network, so that the enterprise can keep the ownership of the secure information and the operator can provide an enterprise level solution through the use of femtocells.
- A preferred embodiment of the invention is an enterprise network including one site only. Please refer to
FIG. 1 .FIG. 1 illustrates a schematic diagram of the enterprise voice/data network in the invention. InFIG. 1 , an enterprise voice/data network 1 and anoperator network 2 are shown. The enterprise voice/data network 1 includes a plurality offemtocells 10, an enterprise private branch exchange (PBX) 12, an enterprise femtocellgateway 14, a plurality of enterpriseinternal extension stations 15, an authorizingunit 16, anequipment authenticating unit 17, anenterprise data gateway 18, and a plurality ofcomputers 19. Theoperator network 2 includes an operator femtocellgateway 20, a mobile switching center (MSC) 21, a gateway mobile switching center (GMSC) 22, a plurality of basestations (node B) 23, a radio network controller (RNC) 24, a serving GPRS support node/gateway GPRS support node (SGSN/GGSN) 25, a home location register (HLR) 26, a visitor location register (VLR) 27, an authentication center (AuC) 28, and an equipment identify register (EIR) 29. A public switched telephone network/integrated services digital network (PSTN/ISDN) 3 and an internet packet data network (PDN) 4 are coupled between the enterprise voice/data network 1 and theoperator network 2. - In this embodiment, the femtocell 10 can communicate with a cell phone CP, the enterprise PBX 12, the enterprise femtocell
gateway 14, the authorizingunit 16, theequipment authenticating unit 17, theenterprise data gateway 18, and the operator femtocellgateway 20 respectively. The enterprise PBX 12 can communicate with the femtocell 10, the plurality of enterpriseinternal extension stations 15, the GMSC 22, and a PSTN/ISDN 3 respectively. Theenterprise femtocell gateway 14 can communicate with thefemtocell 10, the authorizingunit 16, and theequipment authenticating unit 17 respectively. The authorizingunit 16 can communicate with thefemtocell 10, theenterprise femtocell gateway 14, theenterprise data gateway 18, theHLR 26, theVLR 27, and theAuC 28 respectively. Theequipment authenticating unit 17 can communicate with thefemtocell 10, theenterprise femtocell gateway 14, theenterprise femtocell gateway 14, and theEIR 29 respectively. Theenterprise data gateway 18 can communicate with thefemtocell 10, the authorizingunit 16, theequipment authenticating unit 17, the plurality ofcomputers 19, and theinternet PDN 4 respectively. The plurality ofcomputers 19 can communicate with theenterprise data gateway 18. - The
operator femtocell gateway 20 can communicate with thefemtocell 10, theMSC 21, the SGSN/GGSN 25 respectively. TheMSC 21 can communicate with theoperator femtocell gateway 20, theGMSC 22, theRNC 24, theHLR 26, theVLR 27, theAuC 28, and theEIR 29 respectively. TheGMSC 22 can communicate with theenterprise PBX 12, theMSC 21, and the PSTN/ISDN 3 respectively. The plurality of basestations (node B) 23 can communicate with the cell phone CP and theRNC 24 respectively. TheRNC 24 can communicate with theMSC 21, the plurality of basestations (node B) 23, and the SGSN/GGSN 25 respectively. The SGSN/GGSN 25 can communicate with theoperator femtocell gateway 20, theRNC 24, theHLR 26, theVLR 27, theAuC 28, theEIR 29, and theinternet PDN 4 respectively. TheHLR 26 can communicate with the authorizingunit 16, theMSC 21, and the SGSN/GGSN 25 respectively. TheVLR 27 can communicate with the authorizingunit 16, theMSC 21, and the SGSN/GGSN 25 respectively. TheAuC 28 can communicate with the authorizingunit 16, theMSC 21, and the SGSN/GGSN 25 respectively. TheETR 29 can communicate with theequipment authenticating unit 17, theMSC 21, and the SGSN/GGSN 25 respectively. The PSTN/ISDN 3 can communicate with theenterprise PBX 12 and theGMSC 22 respectively. Theinternet PDN 4 can communicate with theenterprise data gateway 18 and the SGSN/GGSN 25 respectively. The cell phone CP can communicate with thefemtocell 10 or the basestation (node B) 23. - In this embodiment, the
femtocell 10 of the enterprise voice/data network 1 functions as a VoIP gateway or a SIP server to direct voice/data signals to different destinations according to the types of the voice/data signals. Thefemtocell 10 will distinguish the destination of the voice/data signal and routes the voice/data signal to the destination of the voice/data signal. Please refer toFIG. 2 .FIG. 2 illustrates a functional block diagram of thefemtocell 10 shown inFIG. 1 . As shown inFIG.2 , thefemtocell 10 includes a communicatingunit 100, a distinguishingunit 102, and amapping unit 104. - In this embodiment, the
femtocell 10 should support the following features: - (1) The communicating
unit 100 of thefemtocell 10 can use the UMTS standard, the GSM standard, or the LTE standard to communicate with the cellular terminals (e.g., the cell phone CP shown inFIG. 1 ), and the communicatingunit 100 of thefemtocell 10 can also support thelayer 2 protocol stack and above, the PHY layer support, the 2G network monitor to listen to surrounding basestations, and the 3G network monitor to listen to surrounding basestations. - (2) The communicating
unit 100 of thefemtocell 10 can use the SIP protocol or the H.323 protocol to communicate with the VoIP gateway/gatekeeper. - (3) The distinguishing
unit 102 of thefemtocell 10 can distinguish calls to and from theoperator network 2 or theenterprise PBX 12 of the enterprise voice/data network 1. - (4) The communicating
unit 100 of thefemtocell 10 can communicate with the cellular network components of theoperator network 2, such as theHLR 26, theVLR 27, theAuC 28, and theER 29. - (5) The communicating
unit 100 of thefemtocell 10 can communicate with the cellular core network components of theoperator network 2, such as theoperator femtocell gateway 20, theMSC 21, and the SGSN/GGSN 25. - (6) The communicating
unit 100 of thefemtocell 10 can communicate with theenterprise PBX 12 and theenterprise data gateway 18. And, theenterprise data gateway 18 can also function as a proxy server or SGSN/GGSN. - (7) The communicating
unit 100 of thefemtocell 10 can route the voice/data signal to the PSTN/ISDN 3 and theinternet PDN 4. - (8) The
mapping unit 104 of thefemtocell 10 can use a mapping method to map a unique handset/cellular terminal ID (e.g., IMEI or IMSI) to the internal extension number of the corresponding handset/cellular terminal. And, themapping unit 104 can use a hash function or a look-up table to map, or use any other mapping methods to map. - (9) The
mapping unit 104 can be disposed in eachfemtocell 10, theenterprise PBX 12, or theoperator femtocell gateway 20. - In addition, since the
femtocell 10 of the enterprise voice/data network 1 functions as a VoIP gateway or a SIP server to direct voice/data signals to different destinations according to the types of the voice/data signals, when thefemtocell 10 receives calls, thefemtocell 10 should follow the following routing rules: - (1) If the distinguishing
unit 102 of thefemtocell 10 distinguishes that the destination of the circuit switched (CS) calls originated from the enterprise handset is an enterprise internal extension, the communicatingunit 100 of thefemtocell 10 will route these calls to the enterprise PBX/MSC (e.g., theenterprise PBX 12 shown inFIG. 1 ). - (2) If the distinguishing
unit 102 of thefemtocell 10 distinguishes that the destination of the CS calls originated from the enterprise handset is a non-enterprise internal extension or an outside phone number, the communicatingunit 100 of thefemtocell 10 will route these calls to theMSC 21 of theoperator network 2 through theoperator femtocell gateway 20. - (3) If the distinguishing
unit 102 of thefemtocell 10 distinguishes that the destination of the CS calls originated from the enterprise handset is another enterprise handset, the communicatingunit 100 of thefemtocell 10 will route these calls to theenterprise femtocell gateway 14. - (4) If the distinguishing
unit 102 of thefemtocell 10 distinguishes that the destination of the CS calls originated from a non-enterprise handset is the enterprise internal extension, the communicatingunit 100 of thefemtocell 10 will route these calls to the enterprise PBX/MSC (e.g., theenterprise PBX 12 shown inFIG. 1 ). - (5) If the distinguishing
unit 102 of thefemtocell 10 distinguishes that the destination of the CS calls originated from the non-enterprise handset is another non-enterprise handset, the communicatingunit 100 of thefemtocell 10 will route these calls to theMSC 21 of theoperator network 2 through theoperator femtocell gateway 20. - (6) If the distinguishing
unit 102 of thefemtocell 10 distinguishes that the destination of the packet switched (PS) and high speed packet access (HSPA) calls originated from an enterprise data terminal is an enterprise data end point, the communicatingunit 100 of thefemtocell 10 will route these calls to theenterprise data gateway 18. - (7) If the distinguishing
unit 102 of thefemtocell 10 distinguishes that the destination of the PS and HSPA calls originated from the enterprise data terminal is a non-enterprise data end point, the communicatingunit 100 of thefemtocell 10 will route these calls to theenterprise data gateway 18 or the SGSN/GGSN 25 of theoperator network 2. - (8) If the distinguishing
unit 102 of thefemtocell 10 distinguishes that the destination of the PS and HSPA calls originated from a non-enterprise data terminal is the enterprise data end point, the communicatingunit 100 of thefemtocell 10 will route these calls to theequipment authenticating unit 17 through theenterprise data gateway 18 for further authentication. - (9) If the distinguishing
unit 102 of thefemtocell 10 distinguishes that the destination of the PS and HSPA calls originated from the non-enterprise data terminal is the non-enterprise data end point, the communicatingunit 100 of thefemtocell 10 will route these calls to the SGSN/GGSN 25 of theoperator network 2, the PSTN/ISDN 3, or theinternet PDN 4. - Moreover, the handovers between any two femtocells should follow the following handover rules:
- (1) The handover between two
femtocells 10 of the enterprise voice/data network 1 should be allowed and controlled by theenterprise femtocell gateway 14. - (2) If there is no other femtocell for the
femtocell 10 to handover to in the enterprise voice/data network 1, the handover from thefemtocell 10 to theoperator network 2 should be allowed. - (3) The handover from the
operator network 2 to thefemtocell 10 of the enterprise voice/data network 1 can be only allowed for enterprise-authorized users; for non-enterprise users, restriction may be set such that it is only allowed if thefemtocell 10 of the enterprise voice/data network 1 has extra capacity to support the non-enterprise users. - In this embodiment, the communicating
unit 100 receives the voice/data signal from the cell phone CP and transmits the voice/data signal to the authorizingunit 16 of the enterprise voice/data network 1 for authorization. The distinguishingunit 102 is coupled to the communicatingunit 100. After the voice/data signal is authorized by the authorizingunit 16, the distinguishingunit 102 will distinguish the destination of the voice/data signal and then the communicatingunit 100 will route the voice/data signal to the destination. Themapping unit 104 uses a mapping method to map between the cell phone CP and an enterprise communication ID. In fact, the enterprise communication ID can be an enterprise internal extension station or a LAN/WAN IP address, and the mapping method can be using a hash function or a look-up table, but not limited to this case. - For example,
FIG. 3 illustrates a schematic diagram of the signaling/data path from an enterprise-authenticated handset to an enterprise internal extension station. As shown inFIG. 3 , the communicatingunit 100 of thefemtocell 10 receives the voice/data signal from the cell phone CP and transmits the voice/data signal to the authorizingunit 16 and theequipment authenticating unit 17 of the enterprise voice/data network 1 for user ID authorization and cell phone authentication respectively. If the cell phone CP is authenticated by theequipment authenticating unit 17 and the distinguishingunit 102 of thefemtocell 10 distinguishes that the destination of the voice/data signal is the enterpriseinternal extension station 15 of the enterprise voice/data network 1, the communicatingunit 100 of thefemtocell 10 will route the voice/data signal to the enterpriseinternal extension station 15 through theenterprise PBX 12. -
FIG. 4 illustrates a schematic diagram of the signaling/data path from an enterprise-authenticated handset to another enterprise-authenticated handset. As shown inFIG. 4 , the communicatingunit 100 of thefemtocell 10 receives the voice/data signal from the cell phone CP1 and transmits the voice/data signal to the authorizingunit 16 and theequipment authenticating unit 17 of the enterprise voice/data network 1 for user ID authorization and cell phone authentication respectively. If the cell phone CP1 is authenticated by theequipment authenticating unit 17 and the distinguishingunit 102 distinguishes that the destination of the voice/data signal is another cell phone CP2, the communicatingunit 100 of thefemtocell 10 will route the voice/data signal to the cell phone CP2 through theenterprise PBX 12 and anotherfemtocell 10′ corresponding to the cell phone CP2. -
FIG. 1 ,FIG. 3 , andFIG. 4 discussed above all show the enterprise voice/data network having only one site. In fact, the enterprise voice/data network of the invention can have two or more sites, and these sites can be connected by PSTN, ISDN, internet, or PDN. Please refer toFIG. 5 .FIG. 5 illustrates a schematic diagram of the signaling/data path from a first site to a second site of an enterprise voice/data network. - In
FIG. 5 , a first site S1 and a second site S2 of an enterprise voice/data network 6 are shown. And,FIG. 5 also shows afirst operator network 8 and asecond operator network 9. In fact, thefirst operator network 8 and thesecond operator network 9 can be the same operator network or different operator networks. And, a public switched telephone network/integrated services digital network (PSTN/ISDN) 3′ and an internet packet data network (PDN) 4′ are coupled between the first site S1 and the second site S2 of the enterprise voice/data network 6. In fact, the first site S1 can communicate with the second site S2 through the PSTN/ISDN 3′, thePDN 4′, or any private wired or wireless communication link such as fiber, E1, T1, etc. - In practical applications, the first site S1 and the second site S2 of the enterprise voice/data network 6 can be disposed at different locations. For example, the first site S1 may be disposed in office A of Taiwan and the second site S2 may be disposed in office B of Japan, and the first site S1 can communicate with the second site S2 through the PSTN/
ISDN 3′ and theinternet PDN 4′. - As shown in
FIG. 5 , the first site S1 includes a plurality offemtocells 60, an enterprise private branch exchange (PBX) 62, anenterprise femtocell gateway 64, a plurality of enterpriseinternal extension stations 65, an authorizingunit 66, anequipment authenticating unit 67, anenterprise data gateway 68, and a plurality ofcomputers 69. Similarly, the second site S2 includes a plurality offemtocells 70, anenterprise PBX 72, anenterprise femtocell gateway 74, a plurality of enterpriseinternal extension stations 75, an authorizingunit 76, anequipment authenticating unit 77, anenterprise data gateway 78, and a plurality ofcomputers 79. - The
first operator network 8 includes anoperator femtocell gateway 80, a mobile switching center (MSC) 81, a gateway mobile switching center (GMSC) 82, a plurality of basestations (node B) 83, a radio network controller (RNC) 84, a serving GPRS support node/gateway GPRS support node (SGSN/GGSN) 85, a home location register (HLR) 86, a visitor location register (VLR) 87, an authentication center (AuC) 88, and an equipment identify register (EIR) 89. Similarly, thesecond operator network 9 includes anoperator femtocell gateway 90, aMSC 91, aGMSC 92, a plurality of basestations (node B) 93, a RNC 94, a SGSN/GGSN 95, aHLR 96, aVLR 97, anAuC 98, and anEIR 99. - When the
femtocell 60 of the first site S1 receives a voice/data signal from a cell phone CP1 and transmits the voice/data signal to the authorizingunit 66 and theequipment authenticating unit 67 of the first site S1 for user ID authorization and cell phone authentication respectively. If thecell phone CP 1 is authenticated by theequipment authenticating unit 67 and thefemtocell 60 distinguishes that the destination of the voice/data signal is the enterpriseinternal extension station 75 of the second site S2, thefemtocell 60 will route the voice/data signal to theenterprise data gateway 68 through theenterprise PBX 62. And then, theenterprise data gateway 68 of the first site S1 will route the voice/data signal to theenterprise data gateway 78 of the second site S2 through theinternet PDN 4′. When theenterprise data gateway 78 of the second site S2 receives the voice/data signal from theinternet PDN 4′, theenterprise data gateway 78 will route the voice/data signal to the enterpriseinternal extension station 75 through theenterprise PBX 72 of the second site S2. - On the other hand, if the
femtocell 60 distinguishes that the destination of the voice/data signal is another cell phone CP2 corresponding to the second site S2, thefemtocell 60 will route the voice/data signal to theenterprise data gateway 68 through theenterprise PBX 62. And then, theenterprise data gateway 68 of the first site S1 will route the voice/data signal to theenterprise data gateway 78 of the second site S2 through theinternet PDN 4′. When theenterprise data gateway 78 of the second site S2 receives the voice/data signal from theinternet PDN 4′, if the cell phone CP2 is authenticated by theequipment authenticating unit 77, theenterprise data gateway 78 will route the voice/data signal to the cell phone CP2 through theenterprise PBX 72 and thefemtocell 70 corresponding to the cell phone CP2. - Therefore, a phone call from the cell phone of an enterprise-authorized user in office A of Taiwan can be answered by the cell phone of another enterprise-authorized user or the wired desk phone in office B of Japan through the enterprise network including femtocells disclosed by the invention.
- It should be emphasized that the integration of the femtocell to the enterprise network in the invention can be also done to more than 2 sites. For example, the enterprise voice/data network can include three sites disposed at different locations, and the femtocells of the invention can be applied in each of the three sites, but not limited to this case.
- Compared to the prior art, the invention discloses an enterprise network and a femtocell designed for the enterprise network to outline innovative ways to integrate femtocell with the latest PBX technologies such as H.323, SIP, or other data/voice communication protocols. It provides a solution for the enterprise to keep the ownership of the secure information (e.g., authentication, subscriber information) and the operator to provide an enterprise level solution through the use of femtocells. Therefore, 3G operators can use the technologies of the invention to infiltrate the enterprise market more easily.
- With the example and explanations above, the features and spirits of the invention will be hopefully well described. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teaching of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.
Claims (15)
1. An enterprise network, comprising:
a first site, comprising:
an authorizing unit;
an enterprise private branch exchange (PBX); and
a plurality of femtocells, coupled to the authorizing unit and the enterprise PBX;
wherein after a first femtocell of the plurality of femtocells receives a voice/data signal from a first enterprise-authenticated handset and the authorizing unit authorizes the voice/data signal, the first femtocell distinguishes a destination of the voice/data signal and routes the voice/data signal to the destination.
2. The enterprise network of claim 1 , wherein the first site further comprises a femtocell gateway for allowing and controlling a handover between two of the plurality of femtocells.
3. The enterprise network of claim 1 , wherein if the destination of the voice/data signal is an enterprise internal extension station of the first site, the first femtocell routes the voice/data signal to the enterprise internal extension station through the enterprise PBX.
4. The enterprise network of claim 1 , wherein if the destination of the voice/data signal is a second enterprise-authenticated handset of the first site, the first femtocell routes the voice/data signal to the second enterprise-authenticated handset through the enterprise PBX and a second femtocell corresponding to the second enterprise-authenticated handset.
5. The enterprise network of claim 1 , wherein if the destination of the voice/data signal is out of the first site, the first femtocell routes the voice/data signal to an operator network.
6. The enterprise network of claim 1 , wherein the first site further comprises an equipment authenticating unit coupled to the first femtocell, the first enterprise-authenticated handset is authenticated by the equipment authenticating unit according to an ID of the first enterprise-authenticated handset, the ID of the first enterprise-authenticated handset is an international mobile equipment identity (IMEI) or an international mobile subscriber identity (IMSI).
7. A femtocell applied in a site of an enterprise network, the site comprising an authorizing unit and an enterprise private branch exchange (PBX), the femtocell comprising:
a communicating unit, coupled to the authorizing unit, the communicating unit receiving a voice/data signal from a first enterprise-authenticated handset and transmitting the voice/data signal to the authorizing unit for authorization; and
a distinguishing unit, coupled to the communicating unit, after the voice/data signal is authorized by the authorizing unit, the distinguishing unit distinguishing a destination of the voice/data signal and the communicating unit routing the voice/data signal to the destination.
8. The femtocell of claim 7 , wherein if the destination of the voice/data signal distinguished by the distinguishing unit is an enterprise internal extension station of the site, the communicating unit of the femtocell will route the voice/data signal to the enterprise internal extension station through the enterprise PBX.
9. The femtocell of claim 7 , wherein if the destination of the voice/data signal distinguished by the distinguishing unit is a second enterprise-authenticated handset of the site, the communicating unit of the femtocell will route the voice/data signal to the second enterprise-authenticated handset through the enterprise PBX and another femtocell corresponding to the second enterprise-authenticated handset.
10. The femtocell of claim 7 , wherein if the destination of the voice/data signal distinguished by the distinguishing unit is out of the enterprise network, the communicating unit of the femtocell will route the voice/data signal to an operator network.
11. The femtocell of claim 7 , wherein the communicating unit of the femtocell uses the UMTS standard, the GSM standard, or the LTE standard to communicate with the first enterprise-authenticated handset, and the communicating unit supports the layer 2 protocol stack and above, the PHY layer support, the 2G network monitor to listen to surrounding basestations, and 3G network monitor to listen to surrounding basestations.
12. The femtocell of claim 7 , wherein the communicating unit of the femtocell uses the SIP protocol or H.232 protocol to communicate with the enterprise data gateway.
13. The femtocell of claim 7 , further comprising:
a mapping unit, for using a mapping method to map between the first enterprise-authenticated handset and an enterprise communication ID, wherein the enterprise communication ID is an enterprise internal extension station or a LAN/WAN IP address.
14. The femtocell of claim 13 , wherein the mapping method is to use a hash function or a look-up table.
15. The femtocell of claim 7 , wherein the site further comprises an equipment authenticating unit coupled to the communicating unit of the femtocell, the first enterprise-authenticated handset is authenticated by the equipment authenticating unit according to an ID of the first enterprise-authenticated handset, the ID of the first enterprise-authenticated handset is an international mobile equipment identity (IMEI) or an international mobile subscriber identity (IMSI).
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EP2424324A1 (en) | 2012-02-29 |
US20120052840A1 (en) | 2012-03-01 |
TWI463905B (en) | 2014-12-01 |
CN102438332A (en) | 2012-05-02 |
TW201210394A (en) | 2012-03-01 |
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