System and method for communicating wireless data utilizing a passive optical network

• US 8,107,815 B2
• Filed: 03/31/2008
• Issued: 01/31/2012
• Est. Priority Date: 03/31/2008
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Akasaka, Youichi, Naito, Takao, Mizutani, Satoshi
• Primary Examiner(s): Sedighian, M. R.
• Application Number:
  US12/059,562
• Publication Number:
  US 20090245805A1
• Time in Patent Office: 1,401 Days
• Field of Search: 398/71, 398/70, 398/69, 398/66, 398/73, 398/128, 398/130, 398/68, 455/553.1, 455/552.1, 455/151.2, 455/39, 455/500, 455/507, 455/66
• US Class Current: 398/71
• CPC Class Codes: H04B 10/1125 using a single common optical path

Abstract

In one embodiment, a method for providing wireless communications utilizing a passive optical network (PON) is disclosed. The method includes receiving, at a PON, downstream packets from a base station destined for a mobile station, and transmitting the downstream packets to wireless transceivers associated with PON. The method also includes receiving, at the first wireless transceiver communicatively coupled to a first optical network terminal (ONT), the downstream packets from the first ONT and transmitting a first wireless signal comprising the downstream packets to a first cell. The method also includes receiving, at a second wireless transceiver communicatively coupled to a second ONT, the downstream packets from the second ONT and transmitting a second wireless signal comprising the downstream packets to a second cell.

Claims

1. A system for providing wireless communications utilizing a passive optical network, comprising:

a passive optical network (PON) comprising;

an optical line terminal (OLT) communicatively coupled to a base station of a wireless communication network and a remote node, the OLT configured to receive downstream packets from the base station destined for a mobile station, and the OLT configured to transmit the downstream packets to the remote node in a downstream wavelength;

the remote node communicatively coupled to the OLT and a plurality of optical network terminals (ONTs), the remote node configured to receive the downstream packets from the OLT and transmit a copy of the downstream packets to each of the plurality of ONTs in the downstream wavelength;

a first ONT communicatively coupled to the remote node and a first wireless transceiver, the first ONT configured to receive the downstream packets from the remote node and transmit the downstream packets to the first wireless transceiver; and

a second ONT communicatively coupled to the remote node and a second wireless transceiver, the second ONT configured to receive the downstream packets from the remote node and transmit the downstream packets to the second wireless transceiver;

the first wireless transceiver communicatively coupled to the first ONT, the first wireless transceiver configured to receive the downstream packets from the first ONT and transmit a first wireless signal comprising the downstream packets to a first cell of the wireless communication network; and

the second wireless transceiver communicatively coupled to the second ONT, the second wireless transceiver configured to receive the downstream packets from the second ONT and transmit a second wireless signal comprising the downstream packets to a second cell of the wireless communication network.

2. The system of claim 1, wherein the OLT comprises:

a receiver, the receiver configured to receive a non-optical signal comprising the downstream packets; and

a transmitter, the transmitter configured to convert the non-optical signal comprising the downstream packets to an optical signal comprising the downstream packets and transmit the optical signal comprising the downstream packets to the remote node via an optical fiber.

3. The system of claim 1, wherein the mobile station is configured to continue to receive the downstream packets without executing a handover when the mobile station enters the second cell from the first cell.

4. The system of claim 1, wherein the first ONT comprises:

a receiver, the receiver configured to receive the optical signal comprising the downstream packets from an optical fiber coupled to the remote node and configured to convert the optical signal comprising the downstream packets to an electrical signal comprising the downstream packets for communication to the wireless transceiver for communication to the first cell.

5. The system of claim 1, wherein the first wireless transceiver and the second wireless transceiver are configured to utilize Worldwide Interoperability for Microwave Access (WiMAX) technology to transmit high speed wireless signals comprising the downstream packets to the first cell and to the second cell.

6. The system of claim 1, wherein the PON is a gigabit PON.

7. The system of claim 1, wherein the first wireless transceiver and the second wireless transceiver are located more than two kilometers from the base station.

8. The system of claim 1, wherein the PON comprises thirty-two ONTs and the first cell covers approximately a 1.25 kilometer range along a vehicular pathway.

9. The system of claim 1, wherein the PON comprises thirty-two ONTs and thirty-two wireless transceivers, the first wireless transceiver is located more than two kilometers from a thirty-second wireless transceiver.

10. A method for providing wireless communications utilizing a passive optical network, comprising:

receiving, at an optical line terminal (OLT) communicatively coupled to a base station of a wireless communication network and a remote node, downstream packets from the base station destined for a mobile station, and transmitting the downstream packets to the remote node in a downstream wavelength, the OLT associated with a passive optical network (PON);

receiving, at the remote node communicatively coupled to the OLT and a plurality of optical network terminals (ONTs), the downstream packets from the OLT and transmitting a copy of the downstream packets to each of the plurality of ONTs in the downstream wavelength;

receiving, at a first ONT communicatively coupled to the remote node and a first wireless transceiver, the downstream packets from the remote node and transmitting the downstream packets to the first wireless transceiver;

receiving, at a second ONT communicatively coupled to the remote node and a second wireless transceiver, the downstream packets from the remote node and transmitting the downstream packets to the second wireless transceiver;

receiving, at the first wireless transceiver communicatively coupled to the first ONT, the downstream packets from the first ONT and transmitting a first wireless signal comprising the downstream packets to a first cell of the wireless communication network; and

receiving, at the second wireless transceiver communicatively coupled to the second ONT, the downstream packets from the second ONT and transmitting a second wireless signal comprising the downstream packets to a second cell of the wireless communication network.

11. The method of claim 10, further comprising:

receiving, at a receiver communicatively coupled to the OLT, a non-optical signal comprising the downstream packets; and

converting the non-optical signal comprising the downstream packets to an optical signal comprising the downstream packets and transmitting the optical signal comprising the downstream packets to the remote node via an optical fiber.

12. The method of claim 10, wherein the mobile station continues to receive the downstream packets without executing a handover when the mobile station enters the second cell from the first cell.

13. The method of claim 10, further comprising:

receiving, at a receiver communicatively coupled to the first ONT, the optical signal comprising the downstream packets from an optical fiber coupled to the remote node and converting the optical signal comprising the downstream packets to an electrical signal comprising the downstream packets for communication to the wireless transceiver for communication to the first cell.

14. The method of claim 10, wherein the first wireless transceiver and the second wireless transceiver utilize Worldwide Interoperability for Microwave Access (WiMAX) technology to transmit high speed wireless signals comprising the downstream packets to the first cell and to the second cell.

15. The method of claim 10, wherein the PON is a gigabit PON.

16. The method of claim 10, wherein the first wireless transceiver and the second wireless transceiver are located more than two kilometers from the base station.

17. The method of claim 10, wherein the PON comprises thirty-two ONTs and the first cell covers approximately a 1.25 kilometer range along a vehicular pathway.

18. The method of claim 10, wherein the PON comprises thirty-two ONTs and thirty-two wireless transceivers, the first wireless transceiver is located more than two kilometers from a thirty-second wireless transceiver.

19. A method for providing wireless communications utilizing a passive optical network, comprising:

receiving, at a first wireless transceiver communicatively coupled to a first optical network terminal (ONT), the upstream packets from a mobile station and transmitting the upstream packets to the first ONT, the first wireless transceiver providing wireless service to a first cell of a wireless communication network;

receiving, at a second wireless transceiver communicatively coupled to a second ONT, the upstream packets from the mobile station and transmitting the upstream packets to the second ONT, the second wireless transceiver providing wireless service to a second cell of a wireless communication network;

receiving, at the first ONT communicatively coupled to a remote node and the first wireless transceiver, the upstream packets from the first wireless transceiver and transmitting the upstream packets to the remote node;

receiving, at the second ONT communicatively coupled to the remote node and the second wireless transceiver, the upstream packets from the second wireless transceiver and transmitting the upstream packets to the remote node;

receiving, at the remote node communicatively coupled to the first and second ONTs, the upstream packets from the first ONT and the second ONT and transmitting the upstream packets from the remote node and

receiving, at an optical line terminal (OLT) communicatively coupled to a base station of a wireless communication network and the remote node, upstream packets from the remote node, and transmitting the upstream packets to the base station of the wireless communication network.

20. The method of claim 19, wherein the first wireless transceiver and the second wireless transceiver are located more than two kilometers from the base station.

21. The method of claim 19, wherein the mobile station continues to transmit the upstream packets without executing a handover when the mobile station enters the second cell from the first cell.

22. The method of claim 19, wherein the mobile station utilizes Worldwide Interoperability for Microwave Access (WiMAX) technology to transmit high speed wireless signals comprising the upstream packets to the first transceiver and to the second transceiver.

23. The method of claim 19, wherein the PON is a gigabit PON.

24. The method of claim 19, wherein the PON comprises thirty-two ONTs and the first cell covers approximately a 1.25 kilometer range along a vehicular pathway.

25. The method of claim 19, wherein the PON comprises thirty-two ONTs and thirty-two wireless transceivers, the first wireless transceiver is located more than two kilometers from a thirty-second wireless transceiver.