System and method to separately route cellular voice and data traffic to different locations with a satellite backhaul
A cellular system and method to provide voice and data services to a user terminal are disclosed. The cellular system includes a cellular base station; a satellite backhaul including a first satellite link and a second satellite link; and a traffic classifier to classify traffic from the cellular base station as voice traffic for transportation via the first satellite link and as data traffic for transportation via the second satellite link.
1. A cellular system to provide voice and data services to a user terminal, the cellular system comprising:
a cellular base station;
a satellite backhaul comprising a first satellite link and a second satellite link; and
a traffic classifier, connected to and co-located with the cellular base station, to classify traffic from the cellular base station as voice traffic for transportation via the first satellite link to a satellite voice gateway and as data traffic for transportation via the second satellite link to a satellite data gateway,
wherein the cellular network comprises an Evolved Packet Core (EPC) Core Network (CN) comprising a Serving Gateway (SGW), a PGW, a Mobility Management Entity (MME), a PCRF, and a Home Subscriber Server (HSS), and
the cellular base station communicates with an IP Multimedia Sub-system (IMS) via the first satellite link and an Internet Gateway over the second satellite link.
2. The system of claim 1 , wherein the voice traffic is communicated within a first region by the first satellite link and the data traffic communicated to a second region different from the first region.
3. The system of claim 2 , wherein the first region is disposed in a first country, and the second region is disposed in a second country different from the first country.
4. The system of claim 1 , wherein the cellular base station is co-located with a transceiver to provide the first satellite link.
5. The system of claim 1 , wherein the cellular base station comprises an LTE eNB.
6. The system of claim 1 , further comprising a Serving Gateway (SGW) or a PDN (Packet Data Network) Gateway (PGW), wherein either the SGW or the PGW comprises the traffic classifier.
7. The system of claim 1 , further comprising a PGW to support a UT handover from the PGW to a target PGW, to transfer a UT context at the PGW to the target PGW and to keep active a UT session during and after the UT handover.
8. The system of claim 1 , wherein the cellular base station communicates with the SGW, the PGW, the PCRF, and the MME without using the first satellite link, and
the cellular base station communicates with the HSS via the first satellite link.
9. The system of claim 1 , wherein the cellular base station communicates with the SGW and the PGW without using the first satellite link, and
the cellular base station communicates with the MME, the PCRF, and the HSS via the first satellite link.
10. The system of claim 1 , wherein a UT is allocated two Access Point Names (APNs) with one APN for use by a local PGW and the other APN for use by a remote PGW.
11. The system of claim 1 , wherein the satellite voice gateway is different than the satellite data gateway.
12. A method for providing voice and data services to a user terminal of a cellular system, the method comprising:
providing a cellular base station;
providing a satellite backhaul comprising a first satellite link and a second satellite link;
classifying traffic from the cellular base station as voice traffic or data traffic; and
transporting the voice traffic via the first satellite link to a satellite voice gateway and the data traffic via the second satellite link to a satellite data gateway,
wherein the cellular network comprises an Evolved Packet Core (EPC) Core Network (CN) comprising a Serving Gateway (SGW), a PGW, a Mobility Management Entity (MME), a PCRF, and a Home Subscriber Server (HSS), and
the cellular base station communicates with an IP Multimedia Subsystem (IMS) via the first satellite link and an Internet Gateway over the second satellite link.
13. The method of claim 12 , wherein the voice traffic is communicated within a first region by the first satellite link and the data traffic is communicated to a second region different from the first region.
14. The method of claim 13 , wherein the first region is disposed in a first country, and the second region is disposed in a second country different from the first country.
15. The method of claim 12 , wherein the cellular base station is co-located with a transceiver to provide the first satellite link.
16. The method of claim 12 , wherein the cellular base station comprises an LTE eNB.
17. The method of claim 12 , wherein the traffic classifier is disposed in a Serving Gateway (SGW) or a PDN (Packet Data Network) Gateway (PGW.
18. The method of claim 12 , providing a PGW to support a UT handover from the PGW to a target PGW, to transfer a UT context at the PGW to the target PGW and to keep active a UT session during and after the UT handover.
19. The method of claim 12 , wherein the cellular base station communicates with the SGW, the PGW, the PCRF, and the MME without using the first satellite link, and
the cellular base station communicates with the HSS via the first satellite link.
20. The method of claim 12 , wherein the cellular base station communicates with the SGW and the PGW without using the first satellite link, and
the cellular base station communicates with the MME, the PCRF, and the HSS via the first satellite link.
21. The method of claim 12 , further comprising allocating two Access Point Names (APNs) to a UT with one APN for use by a local PGW and the other APN for use by a remote PGW.