WO2017172804A1 - Système radio aéroporté utilisant la sae-gw la plus proche pour ancrer de nouvelles connexions le long du trajet de vol et des connexions existantes de tunnels - Google Patents

Système radio aéroporté utilisant la sae-gw la plus proche pour ancrer de nouvelles connexions le long du trajet de vol et des connexions existantes de tunnels Download PDF

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Publication number
WO2017172804A1
WO2017172804A1 PCT/US2017/024587 US2017024587W WO2017172804A1 WO 2017172804 A1 WO2017172804 A1 WO 2017172804A1 US 2017024587 W US2017024587 W US 2017024587W WO 2017172804 A1 WO2017172804 A1 WO 2017172804A1
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WO
WIPO (PCT)
Prior art keywords
abr
aircraft
gws
sae
flight path
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2017/024587
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English (en)
Inventor
Nishi Kant
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brocade Communications Systems LLC
Original Assignee
Brocade Communications Systems LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brocade Communications Systems LLC filed Critical Brocade Communications Systems LLC
Publication of WO2017172804A1 publication Critical patent/WO2017172804A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/18502—Airborne stations
    • H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/005—Moving wireless networks
    • 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
    • H04W84/06—Airborne or Satellite Networks
    • 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
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • TITLE Airborne Radio System That uses Nearest SAE-GW for Anchoring
  • ATG Air to Ground
  • the satellite-based solution is slow and has long latency, which makes it unsuitable for interactive or streaming services.
  • the Air to Ground systems do not have satellite-like propagation delay and should be able to perform much better.
  • the ATG network has a set of base stations spread across the terrestrial coverage, e.g. in case of United States the base stations will be from coast to coast along the flight paths. This is shown in Fig. 1 for two exemplary flight paths between Miami (MIA) and San Francisco (SFO) and Newark (EWR) and San Francisco.
  • the ATG systems typically leverage 3G or 4G technologies, where an airborne radio (ABR) acts like a regular mobile handset or modem (user equipment or UE) for connecting to base stations and then base stations are connected to the terrestrial mobile network for connectivity to Internet or other networks.
  • ABR airborne radio
  • the ABR then acts as a modem connected to a Wi-Fi access point which then accepts connections from the laptops, tablets and cell phones on the aircraft.
  • the core network has a mobility anchor (packet data network gateway /gateway GPRS support node or P-GW/GGSN) in the region that connects to the Internet.
  • the path from the UE is to radio towers (eNodeB or eNB).
  • the eNB then connects to S-GW (serving gateway) and then the S-GW connects to the P-GW/GGSN (mobility anchor), which is a gateway to an external network such as the Internet.
  • S-GW serving gateway
  • P-GW/GGSN mobility anchor
  • the ABR-UE on the aircraft connects to radio towers in its vicinity.
  • a group of the eNBs are then served by a nearby S-GW.
  • the S-GW can connect to any P-GW depending on access point name (APN) based P-GW selection.
  • APN access point name
  • APN Access Point Name
  • the APN decides which P-GW/GGSN becomes anchor for the connecting UE.
  • the name resolution of the APN will point to a nearby P-GW/GGSN that serves that APN.
  • P-GW session/context with P-GW.
  • P-GW session/context with P-GW.
  • P-GW may get connected to a different P-GW.
  • the IP address of the UE is assigned by the P-GW/GGSN and all its data is always routed through the anchor for the duration of connectivity, e.g. if a person attaches to network in city A and drives for a few hours to city B, his/her data flow will remained anchored through the P-GW/GGSN that it got connected to in city A. If the user was simply accessing the Internet, it would be more efficient to route the data through a P-GW/GGSN located closer to City B. However, due to the smaller distances involved, the additional delay due to such anchoring is not that big of an issue.
  • ATG service will have multiple regional datacenters with P-GWs.
  • a person watches 30 min. of video on a laptop soon after takeoff from SFO. Then the person takes a nap for 2 hours, then does skype chatting using the laptop for the next fifteen minutes and then in the last one hour of flight he/she takes aerial video of the NY area using the smartphone to be emailed to a colleague in Maine.
  • an ABR-UE and Wi-Fi AP obtains an IP address from the closest SAE-GW for each new connection. Existing connections remain with the original SAE-GW, but as the plane travels, new connections are made with the closest SAE-GW at the time of the new connection. This reduces backhaul.
  • FIGS. 1-3 are block diagrams of an ATG network according to the present invention at different times.
  • Figure 4A is a flowchart of ABR-UE and Wi-Fi AP operation according to the present invention.
  • Figure 4B is a flowchart of SAE-GW operation according to the present invention.
  • Figure 5 is a block diagram of an S-GW or P-GW.
  • Figure 6 is a block diagram of a combined ABR-UE and Wi-Fi access point according to the present invention.
  • Figure 7 is a block diagram of a separate ABR-UE and a separate Wi-Fi access point according to the present invention.
  • FIG. 1 is a representation of an ATG network 100.
  • Various base stations 102 indicated by the radio towers, are positioned along the flight paths between MIA and
  • S-GW and P-GW referred to as a system architecture evolution gateway
  • SAE-GW SAE-GW 104A-J
  • SAE-GW ABR-UE and Wi-Fi access point 108
  • laptop 110 and a tablet 112 by Wi-Fi.
  • each SAE-GW 104A-J acts as anchor for certain flows and can GTP tunnel others to another anchor.
  • These SAE-GWs 104A-J typically have DPI (Deep Packet Inspection) capability and the preferred embodiment uses that. This is best illustrated with the help of an example.
  • DPI Deep Packet Inspection
  • the ABR-UE 108 establishes a connection with the nearest SAE-GWi 104A.
  • the SAE-GWi 104A assigns the ABR-UE 108 an IP address and establishes the datapath.
  • the preferred embodiment uses the NAT capability at the SAE-GWi 104A before routing the user packets to external data network.
  • the Wi-Fi access point/router 108 assigns an IP address to the passenger's device and then NATs it to an ABR-UE IP address.
  • the user flow then reaches the SAE-GWi 104A.
  • SAE-GWi 104A then does DPI on the packet to check if it is establishment of a new flow (e.g. TCP SYN packet, or first occurrence of 4tuple in the NAT table). If it is a new flow, the SAE-GWi 104A NATs the flow using an IP address that is reverse routable to this SAE-GWi 104A. As long as the aircraft 106 remains closest to this SAE-GWi 104A, this logic works and all flows are routed in and out of the nearest SAE-GWi 104A. This is shown in Figure 1.
  • a new flow e.g. TCP SYN packet, or first occurrence of 4tuple in the NAT table.
  • SAE-GW2 104C As a large majority of user flows are TCP, this logic works. For UDP flows, there is no session start, therefore more work is needed. In these cases, the DPI of higher level protocol identifies new sessions and then the same logic can be applied.
  • the operation of the ABR-UE and Wi-Fi P 108 is illustrated in Fig. 4A.
  • the ABR-UE and Wi-Fi AP 108 is turned on, the initial cellular connection is made and the access point is activated.
  • the ABR-UE and Wi-Fi AP 108 determines if there is a new Wi-Fi connection request, such as a request for a new transmission control protocol (TCP)/IP connection.
  • the request can be a request to connect to a new IP address or a request for a new TCP port at an IP address that is used for an existing connection of the device. Conventionally this is done based on a message from a Wi-Fi AP program looking for TCP SYN or using DPI as described above.
  • step 406 the ABR-UE and Wi-Fi AP 108 determines the closest SAE-GW, based on the location and the enodeB 102.
  • step 408 an IP address is obtained from the SAE-GW.
  • step 410 a local IP address is assigned to the Wi-Fi request, if one is not already assigned to the requesting device, and a NAT relationship is made with the IP address obtained from the nearest
  • ABR-UE 108 communicates with a mobile management entity (MME) to obtain the closest relevant P-GW and closest S-GW and then obtains an IP address from the P-GW.
  • MME mobile management entity
  • the SAE-GW 104 receives a connection request from the ABR-UE 108. In step 454 the SAE-GW 104 determines if this is a new connection request, as described above. If a new request, in step 456 the SAE-GW 104 obtains an IP address for the APN of interest. In step 458 the IP address is provided to the ABR-UE 108. Normal operations resume in step 460.
  • step 462 the connection is tunneled to the anchor SAE-GW 104.
  • SAE-GWs, S-GWs and P-GWs are complicated and expensive computer systems and packet routers, which include a processor 502, network interfaces or ports 508, a packet switch 506 for packet routing and a memory 504 to store programs and data.
  • the operations, such as those described here, are performed by programs stored in the memory and executing on the processor. Because the structure and operation of an SAE-GW, an S-GW and a P-GW are so well known, further details of their construction, configuration and operation are not provided here.
  • Fig. 6 is an exemplary block diagram of a combined ABR-UE and Wi-Fi AP 600 according to the present invention.
  • a processor 602 manages the operation and executes program contained in memory 606, such as flash memory.
  • a RAM 604 provides working storage.
  • a Wi-Fi network processor and RF chip 608 is connected to the processor 602 and handles the Wi-Fi communications.
  • An LTE modem and RF chip 610 is connected to the processor 602 and handles the cellular communications.
  • the memory 606 contains various programs executed on the processor 602. First is an operating system 612. Second is a W-Fi access point program 616 that performs the normal access point and Wi-Fi functions.
  • An LTE program 614 that handles the cellular communications.
  • An airborne program 618 handles the special operations of an ABR-UE and Wi-Fi access point, including most of the operations described herein including obtaining IP addresses from the P-GWs, providing the NAT operations and determining the closest P-GW. It is understood that the functions of the ABR-UE and Wi-Fi AP are substantially separate even though they may be located in the same device and share components, such as a processor, so that the functions may be referred to separately even though the ABR-UE and Wi-Fi AP are integrated into a single device.
  • the system 700 of Figure 7 is similar to the system 600 of Figure 6 except that the ABR-UE and Wi-Fi access point functions have been separated.
  • the Wi-Fi access point 703 includes a processor 702A that manages the operation and executes program contained in memory 706A, such as flash memory.
  • a RAM 704A provides working storage.
  • a Wi-Fi network processor and RF chip 708 is connected to the
  • the processor 702A and handles the Wi-Fi communications.
  • the memory 706A contains various programs executed on the processor 702A.
  • First is an operating system 712.
  • Second is a W-Fi access point program 716 that performs the normal access point and Wi-Fi functions.
  • An airborne program 718A handles Wi-Fi access point special operations described herein including providing the NAT operations.
  • An ABR-UE 701 includes a processor 702B that manages the operation and executes program contained in memory 706B, such as flash memory.
  • a RAM 704B provides working storage.
  • An LTE modem and RF chip 710 is connected to the processor 702B and handles the cellular communications.
  • the memory 706B contains various programs executed on the processor 702B.
  • First is an operating system 712.
  • Second is an LTE program 714 that handles the cellular communications.
  • An airborne program 718B handles the ABR-UE special operations, including obtaining IP addresses from the SAE-GWs and determining the closest SAE-GW.
  • the Wi-Fi access point processor 702A is connected to the ABR-UE processor 702B so that the two processors can communicate.
  • the airborne programs 718A and 718B contain the programs to allow this communication and the programs that handle the cooperative portions of operation.
  • SAE-GW or P-GW as the airplane crosses the country, thus reducing back haul and congestion on SAE-GWs or P-GWs near airports.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un équipement d'utilisateur radio (UE) aéroporté (ABR-UE) et un point d'accès (AP) Wi-Fi (Wi-Fi AP) sur un avion, qui obtiennent une adresse IP de la passerelle d'évolution d'architecture système (SAE-GW) la plus proche pour chaque nouvelle connexion. Des connexions existantes sont maintenues avec la SAE-GW d'origine mais, à mesure que l'avion se déplace, de nouvelles connexions sont établies avec la SAE-GW la plus proche à chaque nouvelle connexion. Ceci réduit le trafic de raccordement.
PCT/US2017/024587 2016-03-31 2017-03-28 Système radio aéroporté utilisant la sae-gw la plus proche pour ancrer de nouvelles connexions le long du trajet de vol et des connexions existantes de tunnels Ceased WO2017172804A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662315877P 2016-03-31 2016-03-31
US62/315,877 2016-03-31

Publications (1)

Publication Number Publication Date
WO2017172804A1 true WO2017172804A1 (fr) 2017-10-05

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PCT/US2017/024587 Ceased WO2017172804A1 (fr) 2016-03-31 2017-03-28 Système radio aéroporté utilisant la sae-gw la plus proche pour ancrer de nouvelles connexions le long du trajet de vol et des connexions existantes de tunnels

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090082013A1 (en) * 2007-09-20 2009-03-26 Honeywell International Inc. System and method for wireless routing of data from an aircraft
US20090186611A1 (en) * 2007-12-18 2009-07-23 Voyant International Corporation Aircraft broadband wireless system and methods
US20100202375A1 (en) * 2007-07-13 2010-08-12 Telefonaktiebolaget L M Ericsson (Publ) Method for Reducing the Control Signaling in Handover Situations
US20110292907A1 (en) * 2010-05-28 2011-12-01 Honeywell International Inc. Method and system for ground station signal handover for aircraft
WO2012004786A2 (fr) * 2010-07-06 2012-01-12 Semion Zelikman Procédé, système et supports pour la prestation de services de communication et de divertissement à bord de plateformes qui se déplacent
WO2014158766A1 (fr) * 2013-03-14 2014-10-02 Flextronics Ap, Llc Module embarqué de communication réseau de véhicule
WO2015181045A1 (fr) * 2014-05-28 2015-12-03 Lufthansa Systems Gmbh & Co. Kg Dispositif et procédé pour communication air-sol d'aéronef

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100202375A1 (en) * 2007-07-13 2010-08-12 Telefonaktiebolaget L M Ericsson (Publ) Method for Reducing the Control Signaling in Handover Situations
US20090082013A1 (en) * 2007-09-20 2009-03-26 Honeywell International Inc. System and method for wireless routing of data from an aircraft
US20090186611A1 (en) * 2007-12-18 2009-07-23 Voyant International Corporation Aircraft broadband wireless system and methods
US20110292907A1 (en) * 2010-05-28 2011-12-01 Honeywell International Inc. Method and system for ground station signal handover for aircraft
WO2012004786A2 (fr) * 2010-07-06 2012-01-12 Semion Zelikman Procédé, système et supports pour la prestation de services de communication et de divertissement à bord de plateformes qui se déplacent
WO2014158766A1 (fr) * 2013-03-14 2014-10-02 Flextronics Ap, Llc Module embarqué de communication réseau de véhicule
WO2015181045A1 (fr) * 2014-05-28 2015-12-03 Lufthansa Systems Gmbh & Co. Kg Dispositif et procédé pour communication air-sol d'aéronef

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