PATENT DOCUMENT

Publication Number: US-9288738-B2
Application Number: US-201414511243-A
Country: US
Kind Code: B2

Title: Ubiquitous access to femto—connected network

Abstract:
A system and method of enabling a mobile device to communicate with a local IP network host and an external IP network host using a femto cellular access point on a femto cellular access network. A local gateway is coupled to the femto cellular access network for receiving data packets transmitted on the femto cellular access network and for routing the data packets to one of a local IP network and an external IP network, based on a destination address associated with the data packets. The femto cellular access network includes an LTE network, an EVDO network connected to an EPC, or a WiMax 802.16e/m network connected to the EPC.

Claims:
The invention claimed is:  
     
       1. A method for enabling a mobile device to communicate with a local IP network and a marco cellular network, comprising:
 performing, at a femto cellular access point:
 receiving first data packets transmitted by the mobile device; 
 analyzing the first data packets to identify a first destination address of the data packets; 
 in response to determining that the first data packets identify a destination address of a terminal device within the local IP network, the femto cellular access point routing the first data packets to the terminal device, wherein said routing the first data packets to the terminal device comprises maintaining the first data packets in the local IP network without transmitting the first data packets to the macro cellular network; 
 receiving second data packets transmitted by the mobile device; 
 analyzing the second data packets to identify a second destination address of the data packets, wherein the second destination address is different than the first destination address; and 
 in response to determining that the second data packets identify an external destination address, routing the second data packets to the macro cellular network. 
 
 
     
     
       2. The method of  claim 1 , wherein routing the first data packets to the terminal device comprises maintaining the first data packets in the local IP network without transmitting the first data packets to a core gateway of the macro cellular network. 
     
     
       3. The method of  claim 1 , further comprising:
 communicating control plane information associated with the mobile device to a mobility management entity (MME) of the macro cellular network. 
 
     
     
       4. The method of  claim 1 , further comprising:
 assigning a local internet protocol address to the femto cellular access point. 
 
     
     
       5. The method of  claim 1 , wherein the terminal device includes at least one of a media player, a printer, a computer or a data storage device. 
     
     
       6. The method of  claim 1 , wherein the local IP network comprises a plurality of terminal devices. 
     
     
       7. The method of  claim 1 , wherein routing the data packets to the terminal device comprises transmitting the data packets to a router of the local IP network. 
     
     
       8. The method of  claim 1 , wherein the femto cellular access point provides a femto cellular access network, wherein the femto cellular access network comprises an LTE network. 
     
     
       9. A femto cellular access point configured to enable a mobile device to communicate with a local IP network and a macro cellular network, comprising:
 communication circuitry for performing communication with one or more mobile devices, the local IP network, and the macro cellular network; 
 processing hardware coupled to the communication circuitry, wherein the processing hardware is configured to operate with the communication circuitry to:
 receive data packets transmitted by the mobile device; 
 analyze the data packets to identify a destination address of the data packets; 
 in response to determining that the data packets identify a destination address within the local IP network, route the data packets within the local IP network, wherein said routing comprises maintaining the data packets in the local IP network without transmitting the data packets to a core gateway of the macro cellular network; and 
 in response to determining that the data packets identify an external destination address, route the second data packets to the core gateway of the macro cellular network. 
 
 
     
     
       10. The femto cellular access point of  claim 9 , wherein the processing hardware is further configured to operate with the communication circuitry to communicate control plane information associated with the mobile device to a mobility management entity (MME) of the macro cellular network. 
     
     
       11. The femto cellular access point of  claim 9 , wherein determining that the data packets identify the destination address within the local IP network comprises determining that the data packets identify the destination address of a terminal device within the local IP network, and wherein routing the data packets within the local IP network in response to determining that the data packets identify the destination address within the local IP network is performed to the terminal device. 
     
     
       12. The femto cellular access point of  claim 11 , wherein the terminal device includes at least one of a media player, a printer, a computer or a data storage device. 
     
     
       13. The femto cellular access point of  claim 9 , wherein the local IP network includes a plurality of terminal devices. 
     
     
       14. The femto cellular access point of  claim 9 , wherein routing the data packets within the local IP network comprises transmitting the data packets to a router of the local IP network. 
     
     
       15. The femto cellular access point of  claim 9 , wherein the processing hardware is further configured to:
 assign a local IP address to the femto cellular access point. 
 
     
     
       16. The femto cellular access point of  claim 9 , wherein the femto cellular access point provides a femto cellular access network, wherein the femto cellular access network comprises an LTE network. 
     
     
       17. A non-transitory, computer accessible memory medium storing program instructions for enabling a mobile device to communicate with a local IP network and a macro cellular network, wherein the program instructions, when executed by a processor of a femto cellular access point, cause the femto cellular access point to perform a method comprising:
 receiving data packets transmitted by the mobile device; 
 analyzing the data packets to identify a destination address of the data packets; 
 in response to determining that the data packets identify a destination address of a terminal device within the local IP network, routing the data packets to the terminal device, wherein said routing the data packets to the terminal device comprises maintaining the data packets in the local IP network without transmitting the data packets to a core gateway of the macro cellular network; and 
 in response to determining that the data packets identify an external destination address, routing the second data packets to the core gateway of the macro cellular network. 
 
     
     
       18. The non-transitory, computer accessible memory medium of  claim 17 , wherein the method further comprises:
 communicating control plane information associated with the mobile device to a mobility management entity (MME) of the cellular core network. 
 
     
     
       19. The non-transitory, computer accessible memory medium of  claim 17 , wherein the terminal device includes at least one of a media player, a printer, a computer or a data storage device. 
     
     
       20. The non-transitory, computer accessible memory medium of  claim 17 , wherein the femto cellular access point provides a femto cellular access network, wherein the femto cellular access network comprises an LTE network.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application ser. no. 13/868,536, filed on Apr. 23, 2013, which is a continuation of U.S. patent application Ser. No. 12/935,827, filed on Sep. 30, 2010, now U.S. Pat. No. 8,446,863, which is a submission Under 35 U.S.C. §371 for U.S. National Stage patent application of international application no. PCT/CA2009/000559, filed Apr. 29, 2009 entitled “UBIQUITOUS ACCESS TO FEMTO-CONNECTED NETWORK,” which claims priority to U.S. provisional application Ser. no. 61/048,721, filed Apr. 29, 2008, all of which are incorporated herein by reference as if set forth in their entireties. 
    
    
     FIELD OF THE INVENTION 
     This invention relates to femto cell networks, and more particularly to a system and method of granting user equipment access to in-home electronic devices that are coupled to the femto cell, both while the user equipment is operating within the femto cell and while the user equipment is operating outside the femto cell. 
     BACKGROUND OF THE INVENTION 
     Wireless carriers employ cellular towers to generate large cells for wireless communications over vast physical areas, such as metropolitan or rural areas. The large cells or macro cells may cover areas of 1 km to 5 km in diameter. A cellular tower broadcasts wireless signals to and receives wireless signals from user equipment or mobile handsets that are located throughout the macro cells. 
     Various structures are located within the macro cell that obstruct, reflect or otherwise interfere with the wireless signals. For example, users typically attempt to use mobile devices inside structures such as homes and commercial establishments, among other structures. These structures may be constructed of high loss material, such as concrete or metal that block wireless signals from penetrating the structures. Reception within these structures is often poor and unreliable due to weak wireless signal strength. Poor reception is associated with inferior quality of service by the mobile user. Femto cells or micro cells are located within these high loss structures to route signal transmissions through existing broadband backhaul infrastructure to the macro network. What is desired are systems and methods of allowing multiple devices, such as cellular and network devices, that are located within the femto cell to communicate with each other while the user equipment is located within the femto cell or while the user equipment is located outside the femto cell. Additionally, what is desired are systems and methods of allowing the user equipment to communicate with home-based devices, such as data storage devices, printing devices or other devices. 
     SUMMARY OF THE INVENTION 
     The invention advantageously provides a method and system for allowing multiple devices that are coupled through a femto cell, such as user equipment and network terminal devices, to communicate with each other while the user equipment is located within the femto cell or while the user equipment is located outside the femto cell. The invention also allows the user equipment to communicate with home-based devices, such as data storage devices, printing devices or other devices. 
     A system is provided for enabling a mobile device to communicate with a local IP network host and an external IP network host using a femto cellular access point on a femto cellular access network. The system includes a local gateway that is coupled to the femto cellular access network and receives data packets transmitted on the femto cellular access network. The data packets are routed a local IP network or an external IP network based on a destination address associated with the data packets. 
     A system is also provided for enabling a mobile device that is coupled to a macro cellular network to communicate with a local IP network using a femto cellular access network through a macro cellular access network. A local gateway is provided to receive data packets that are transmitted on the macro cellular access network and to routes the data packets to terminal devices that are coupled to a local IP network. 
     A method is provided for using a femto cell to facilitate communications between a mobile device and at least one terminal device. The method includes assigning a local internet protocol address to a local gateway and receiving data packets transmitted by a mobile device at the local gateway. The data packets are analyzed to identify a local destination address and are routed to the at least one terminal device. The data packets are maintained in a local network without transmitting data packets to a core gateway. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A more complete understanding of the invention, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein: 
         FIG. 1  illustrates a block diagram of the an in-home local breakout network architecture constructed in accordance with the principles of the invention; 
         FIG. 2  illustrates a block diagram of the an away-from-home remote access to a home-based network architecture constructed in accordance with the principles of the invention; 
         FIG. 3  illustrates a flow chart for performing a femto cell local breakout in accordance with the principles of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The invention provides femto base stations or home evolved Node-B devices that are positioned inside structures to improve cellular quality of service and facilitate communications with devices coupled to a home network. For example, the femto base stations may be positioned inside residential or commercial structures, among other structures. The femto base stations may operate in the femto power range of about +15 dBm and may provide an operation range of approximately 50 meters. 
     The femto base stations communicate with user equipment (“UE”), such as cellular telephone, personal digital assistants, or other UE over wireless cellular technologies. The femto base stations may use existing broadband backhaul infrastructure to access networks, such as the Internet and/or macro networks, through the publicly-switched telephone network. The femto base stations may be coupled to digital subscriber line (“DSL”) devices or cable modems and to local area networks (“LANs”). 
     The invention may operate using existing cellular technologies, such as CDMA2000 1xRTT, evolution-data optimized (“EV-DO”) and long-term evolution (“LTE”) networks, among other cellular networks. 
     The UE  102  may include a wide range of electronic devices, including but not limited to mobile phones, personal data assistants (“PDA”) and similar devices, which use the various communication technologies such as advanced mobile phone system (“AMPS”), time division multiple access (“TDMA”), code division multiple access (“CDMA”), global system for mobile communications (“GSM”), general packet radio service (“GPRS”), 1x evolution-data optimized (abbreviated as “EV-DO” or “1xEV-DO”) and universal mobile telecommunications system (“UMTS”). The UE  102  also include hardware and software suitable to support the control plane functions needed to engage in wireless communication with the femto base stations and enhanced nodes (“eNB”). Such hardware can include a receiver, transmitter, central processing unit, storage in the form of volatile and nonvolatile memory, and input/output devices, among other hardware. 
     The invention is directed to deploying a plurality of femto cells within a macro cell environment. While the various femto base stations are components of the overall communications network, each femto cell is separate and distinct from the existing macro cell and any adjacent femto cells. During mobility, the system hands UE communication sessions from a femto cell to the macro cell, or vice versa. Alternatively, the system may hand UE communication sessions from a femto cell to another femto cell. 
     According to one embodiment, the macro cells and the femto cells employ handoff procedures that are initiated when signal strength measurements originating in the active network, such as the cellular network or the femto network, fall below pre-selected threshold parameters. The UE  102  may detect the weak signal strength emanating from the “active” access network and may initiate a handoff to the “idle” access network, such as the femto base station network or the cellular network, having a stronger signal strength, by reporting the weak signal to the active access network. 
     Alternatively, the handoff procedures may be initiated to off-load terminal device traffic from the cellular network to the femto base station network. The femto base station is a personal and dedicated base station for each corresponding structure, such as a home or commercial building. The femto base stations independently support network traffic, along with the cellular network that supports the macro cell. 
     The femto base station  110  may be directly or indirectly coupled to a hub/switch  106 , DSL/cable modem  107  and/or router  108 . These devices may include separate hardware devices or a combination of hardware devices. The hub/switch  106  and router  108  may be provided to share system resources, such as terminal devices  104 , with the UE  102 . The terminal devices  104  may include personal computers, laptops, printers, and media players, among other terminal devices. 
     The invention provides femto base stations  110  having a local PDN Gateway (“PGW”)  112  with a home access point name (“APN”) and a serving gateway (“SGW”)  114  that directs in-home data requests to terminal devices  104  that are coupled to a local area network  113 . A single access point name may be assigned to a plurality of subscribers and may be resolved to a target local PGW  112 . Alternatively, a plurality of access point names may be assigned to a plurality of subscribers. 
     Long-term evolution (“LTE”) and evolved high rate packet data (“eHRPD”) are exemplary 4G technologies that improve the universal mobile telecommunications system (“UMTS”) mobile telephone standard by providing a simplified, all-packet architecture. The UMTS technology supports mobile Internet protocol (“IP”) services, such as music downloads, video sharing, voice over IP broadband access, and other IP services to laptops, personal digital assistants (“PDAs”) and other terminal devices  104 . The LTE enhances current UMTS capabilities by providing improved efficiency, lower costs, increased peak data rates, lower latency, improved services and improved integration with other open standards. The invention further supports femto cellular access networks, including an LTE network, an EVDO or evolved high rate packet data (eHRPD) network connected to an evolved packet core (“EPC”), WiMax 802.16e/m connected to EPC. 
     It should be appreciated that, although the invention is described with reference to the LTE network, the principles of the invention may be adapted by one of skill in the art to include other networks, such as WiMAX (802.16) networks, other CDMA2000 networks and any other networks known in the art or later developed. 
     Referring now to the drawing figures in which like reference designators refer to like elements,  FIG. 1  illustrates an exemplary block diagram of a system designated generally as “100” that includes user equipment  102  that operates on cellular technology and terminal devices  104  that operate on a local area network within a femto cell range. The invention enables the UE  102  to access the terminal devices  104  that are located within the femto cell range. The UE  102  may be assigned a local area IP address. The femto base station  110  includes a local packet data network (“PDN”) Gateway (“PGW”)  112  having a home access point name (“APN”) and a local serving gateway (“SGW”)  114  that routes in-cell data requests to an in-home LAN  113 . The ‘home-based’ PDN or local PGW  112  permits the UE  102  to attach to terminal devices  104  on the local area network  113 . 
     Local PGW  112  provides direct connectivity between the UE  102  and terminal devices  104  that are connected to the home LAN  113  through the femto base station  110 . For example, the UE  102  may be directly connected to terminal devices  104 , including a printer, media player, a display device or other terminal devices. The local PGW  112  and the local SGW  114  may eliminate the need to send data from the UE  102  across to operator&#39;s macro network  132 . As a result, Internet traffic may be off-loaded from a service provider&#39;s wireless network to the backhaul IP infrastructure. The femto base station  110 , the local PGW  112  and the local SGW  114  may be configured to enable the UE  102  to access one or more packet data networks (“PDN”) concurrently through one or more local PGWs  112 . 
     To support this capability, in addition to supporting a home or local SGW  114  and local PGW  112 , the femto base station  110  supports the S 5  and S 11  interface, among other interfaces. The femto gateway (“GW”)  120 , in addition to aggregating the S 1 -MME interface, also may be enhanced to support S 11  and S 5  aggregation. 
     The femto base stations  110  may include a central processing unit (“CPU”), transmitter, receiver, I/O devices and storage, such as volatile and nonvolatile memory, to implement the functions described herein. The femto base stations  110  may communicate with the UE  102  over a radio interface. 
     The femto base station  110  is coupled to the femto GW  120  through IPsec tunnel  116 . IPsec tunnel  116  provides a secure public network connection and preventing wiretapping, traffic manipulation or other security threats. The femto GW  120  is an interface to external networks and may be coupled to a plurality of femto base stations  110 . For example, the femto GW  120  may be coupled to and may manage hundreds or thousands of femto base stations  110 . Additionally, the femto GW  120  may be configured as an authenticator that grants local breakout authorization. 
     According to one embodiment, a mobility management entity (“MME”)  134  may be provided as a control plane entity to manage the UE  102  within the LTE network to authenticate the UE  102 . The MME  134  may be connected to the femto base station  110 . The MME  134  is a signaling only entity, such that IP data packets that originate from the UE  102  are not processed at the MME  134 . The MME  134  may perform various functions, including non-access stratum (“NAS”) signaling; NAS signaling security; tracking area list management for mobile terminals in idle and active mode; packet data network gateway (“PDN-GW”) selection and serving gateway (“S-GW”) selection; roaming; authentication; and bearer management functions; among other functions. 
     The femto GW  120  communicates with packet data network gateway (“PDN GW”) or (“PGW”)  130 . The communication may be performed using an S 5  reference point, among other interfaces. PGW  130  provides the UE  102  with access to one or more PDN concurrently through one or more PGWs  130 . The PGW  130  provides an anchor point for the UE  102  and remains in communication with the UE  102  throughout a communication session, regardless of whether the UE  102  moves to different network nodes. The PGW  130  is configured not to receive data that is transmitted using the femto base station  110  between the UE  102  and in-home terminal devices  104 . External Internet traffic may be routed to the terminal devices  104  through the in-home or local PGW  112  or the PGW  130 , based on operator decision. The PGW  130  may perform various functions, including packet filtering on a per-user basis; interception; mobile terminal IP address allocation; uplink (“UL”) and downlink (“DL”) service level charging, gating and rate enforcement; and transport level packet marking in the downlink; among performing other functions. Additionally, the PGW  130  may manage mobility between 4G networks and non-4G networks. 
     A serving gateway (“SGW”)  136  may be coupled to an evolved UMTS terrestrial LAN (e-UTRAN) and the MME  134  to manage packet forwarding uplink and downlink between the PGW  130  and the e-UTRAN environment. The SGW  136  may perform various functions, including being a local mobility anchor point for inter-eNB handoffs; mobility anchoring for inter-4G mobility; interception; packet routing and forwarding; transport level packet marking in the uplink and downlink; uplink and downlink per mobile terminal, PDN and quality of service class identifier (“QCI”); and accounting on user and QCI granularity for inter-operator charging; among performing other functions. An IP multimedia subsystem (“IMS”) core  140  may be coupled to the PGW  130  to handle calls or sessions, real-time session negotiation and management. A home subscriber server (“HSS”) may be coupled to the MME  134  to maintain a physical location of the user. The HSS may be implemented with a master database having subscription and location information. 
       FIG. 2  illustrates a schematic block diagram of a system for enabling the UE  102 , which is located at a remote location, to communicate with in-home terminal  104  devices. The invention enables users to access the home network  113  while connected to the macro network. Additional PDN connectivity enables the user to specify a home PDN as a target PDN. The SGW  136  on the macro network creates an S 5  tunnel to the user&#39;s home PDN and provides the UE  102  with access to the terminal devices  104  on the local network. The components of  FIG. 2  are the same as the components of  FIG. 1 , with  FIG. 2  including a communications path from the SGW  136  to the femto GW  120  in order to facilitate routing of a request to the local PGW  112 . The UE  102  communicates with the e-UTRAN  135  in the macro network, where the UE  102  is authenticated and a data packet is forwarded to the SGW  136 . The SGW  136  analyzes the data packet from the UE  102  and determines whether to direct the received data to the local or home-based PGW  112  through the femto GW  120 . The UE  102  may acquire an IP address for itself on both the remote network and the local or home-based network  113  through, for example, a dynamic host configuration protocol (“DHCP”) or another address management protocol. The femto GW  120  may direct the data packets to the local or home-based PGW  112 . The local PGW  112  may send the data packets to the in-home LAN  113  for distribution to target in-home terminal devices  104 . 
       FIG. 3  illustrates an exemplary flow diagram for performing local breakout at the femto base station  110 . A femto base station is configured to include a home access point name in step S 302 . Receive a data packet at the macro network in step S 304 . Evaluate the data packet at the mobility management entity and forward the data packet to the femto GW at step S 306 . Forward the data packet to a corresponding local PGW at step S 308 . Route the data packet to an in-home breakout device at step S 310 . Communicate with an in-home device in step S 312 . 
     It should be appreciated that, although the invention is described with reference to the LTE network, the principles of the invention may be adapted by one of skill in the art to migrate between any networks, including other networks, such as 1xRTT networks, EV-DO networks, UMTS networks, WiMAX (802.16) networks, other CDMA2000 networks and any other networks known in the art or later developed. 
     The present invention can be realized in hardware, software, or a combination of hardware and software. Any kind of computing system, or other apparatus adapted for carrying out the methods described herein, is suited to perform the functions described herein. 
     A typical combination of hardware and software could be a specialized computer system having one or more processing elements and a computer program stored on a storage medium that, when loaded and executed, controls the computer system such that it carries out the methods described herein. The present invention can also be embedded in a computer program product, which comprises all the features enabling the implementation of the methods described herein, and which, when loaded in a computing system is able to carry out these methods. Storage medium refers to any volatile or non-volatile storage device. 
     Computer program or application in the present context means any expression, in any language, code or notation, of a set of instructions intended to cause a system having an information processing capability to perform a particular function either directly or after either or both of the following a) conversion to another language, code or notation; b) reproduction in a different material form. 
     In addition, unless mention was made above to the contrary, it should be noted that all of the accompanying drawings are not to scale. Significantly, this invention can be embodied in other specific forms without departing from the spirit or essential attributes thereof, and accordingly, reference should be had to the following claims, rather than to the foregoing specification, as indicating the scope of the invention. 
     It will be appreciated by persons skilled in the art that the present invention is not limited to what has been particularly shown and described herein above. In addition, unless mention was made above to the contrary, it should be noted that all of the accompanying drawings are not to scale. A variety of modifications and variations are possible in light of the above teachings without departing from the scope and spirit of the invention, which is limited only by the following claims.

Metadata:
Filing Date: 20141010
Publication Date: 20160315
Grant Date: 20160315
Priority Date: 20080429
Inventors: PARSONS ERIC W.
REININGER PHILIPPE
STOJANOVSKI SASO
BARNOWSKI BARNABA
Assignee: APPLE INC
CPC Classifications: [{"code": "H04W88/08", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W48/08", "inventive": true, "first": true, "tree": "[]"}, {"code": "H04L45/72", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W84/045", "inventive": false, "first": false, "tree": "[]"}, {"code": "H04W88/16", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W88/16", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04L45/745", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W88/02", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W40/02", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W92/02", "inventive": false, "first": false, "tree": "[]"}, {"code": "H04W88/02", "inventive": false, "first": false, "tree": "[]"}, {"code": "H04W84/045", "inventive": false, "first": false, "tree": "[]"}, {"code": "H04W92/02", "inventive": false, "first": false, "tree": "[]"}, {"code": "H04W40/20", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W80/04", "inventive": true, "first": true, "tree": "[]"}, {"code": "H04W80/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W84/045", "inventive": false, "first": false, "tree": "[]"}, {"code": "H04W40/02", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W92/02", "inventive": false, "first": false, "tree": "[]"}, {"code": "H04W88/08", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W88/02", "inventive": false, "first": false, "tree": "[]"}, {"code": "H04W88/16", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W40/20", "inventive": true, "first": true, "tree": "[]"}, {"code": "H04L45/72", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W80/04", "inventive": true, "first": true, "tree": "[]"}, {"code": "H04W88/16", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04L45/72", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W16/32", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W88/08", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W40/20", "inventive": true, "first": true, "tree": "[]"}, {"code": "H04W84/045", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W80/04", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W88/16", "inventive": true, "first": false, "tree": "[]"}, {"code": "H04W16/32", "inventive": true, "first": true, "tree": "[]"}, {"code": "H04L45/745", "inventive": true, "first": false, "tree": "[]"}]
Family ID: 41254732