Method and transceiver for network diversity in long distance communications

• US 10,075,229 B2
• Filed: 06/26/2013
• Issued: 09/11/2018
• Est. Priority Date: 06/26/2013
• Status: Active Grant

• Current Assignee: Saab AB
• Original Assignee: Saab AB
• Inventors: Backman, Anders, Andersson, Morgan
• Primary Examiner(s): Patel, Jay P
• Application Number:
  US14/898,866
• Publication Number:
  US 20160191140A1
• Time in Patent Office: 1,903 Days
• CPC Class Codes: H04B 17/00 Monitoring; Testing of line transmission systems H04B3/46; arrangements for monitoring or testing transmission systems employing electromagnetic waves other than radio waves H04B10/07
• CPC Class Codes: H04B 17/391 Modelling the propagation channel
• CPC Class Codes: H04B 7/15507 Relay station based processing for cell extension or control of coverage area, network planning with network coordinated processing with regard to cell extension H04W16/26; network topologies using dedicated repeater stations H04W84/047; terminal devices adapted for relaying to or from an other terminal H04W88/04
• CPC Class Codes: H04B 7/15592 Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path cooperative diversity H04B7/024
• CPC Class Codes: H04B 7/18502 Airborne stations
• CPC Class Codes: H04B 7/2125 Synchronisation
• CPC Class Codes: H04B 7/2126 using a reference station

Abstract

A method in a main node for communication with a destination node over long distances. Use of at least one communications resource is synchronized with an auxiliary node. A main signal and an auxiliary signal are generated from an information quantity. The main signal is transmitted to the destination node by the at least one synchronized communications resource. The auxiliary signal is transmitted to the auxiliary node by the at least one synchronized communications resource.

Claims

1. A method in a main node for communication with a destination node over long distances, the method comprising:

synchronizing use of at least one communications resource with an auxiliary node,

generating a main signal and an auxiliary signal from an information quantity,

transmitting the main signal to the destination node by the at least one synchronized communications resource,

transmitting the auxiliary signal to the auxiliary node by the at least one synchronized communications resource;

determining a network geometry and a network propagation condition of a network comprising the main node, the destination node, and the auxiliary node; and

positioning the auxiliary node based on said determined network geometry and propagation conditions to optimize transmission conditions for communication between the main node and the destination node, wherein determining a network geometry and a network propagation condition of a network further comprises constructing a propagation condition forecast based on changes in the network geometry and a network propagation condition of the network, and wherein positioning the auxiliary node comprises optimizing transmission conditions for communication between the main node and the destination node based on said propagation condition forecast.

2. The method according to claim 1, wherein the at least one communications resource comprises at least one out of a transmission time schedule, a transmission frequency allotment schedule, and a spread spectrum spreading code assignment.

3. A method in an auxiliary node for communication between a main node and a destination node over long distances, the method comprising:

synchronizing use of at least one communications resource with the main node,

receiving an auxiliary signal from the main node by the at least one synchronized communications resource,

transmitting a forwarded auxiliary signal to the destination node by the at least one synchronized communications resource,

determining a network geometry and a network propagation condition of a network comprising the main node, the destination node, and the auxiliary node; and

positioning the auxiliary node based on said determined network geometry and propagation conditions to optimize transmission conditions for communication between the main node and the destination node, wherein determining the network geometry and the network propagation condition of a network further comprises constructing a propagation condition forecast based on changes in the network geometry and the network propagation condition of the network, and wherein positioning the auxiliary node comprises optimizing transmission conditions for communication between the main node and the destination node based on said propagation condition forecast.

4. The method according to claim 3, further comprising:

manoeuvring the auxiliary node based on the determined network geometry and the determined network propagation condition in order to optimize transmission conditions for communication between the main node and the destination node.

5. A transceiver arranged for long distance communication in a main node, the transceiver comprising:

an antenna unit,

a network communicator unit connected to the antenna unit,

a signal processor unit,

a synchronization unit, and

a transmission condition optimizer,

wherein the synchronization unit is arranged to synchronize use by the network communicator of at least one communications resource with an auxiliary node, determining a network geometry and a network propagation condition of a network comprising the main node, the destination node, and the auxiliary node, the auxiliary node is positioned based on said determined network geometry and propagation conditions to optimize transmission conditions for communication between the main node and the destination node, wherein determining the network geometry and the network propagation condition of a network further comprises constructing a propagation condition forecast based on changes in the network geometry and a network propagation condition of the network, and wherein positioning the auxiliary node comprises optimizing transmission conditions for communication between the main node and the destination node based on said propagation condition forecast, wherein the signal processor unit is arranged to generate a main signal and an auxiliary signal from an input information quantity arranged to be received on an input interface of the main node, and wherein the network communicator unit is arranged to receive the main signal and the auxiliary signal and to transmit said main and auxiliary signals via the antenna unit to a destination node and the auxiliary node, respectively.

10. The transceiver according to claim 5, wherein the network communicator unit is arranged to apply a forward error correction channel code prior to transmitting signals via the antenna unit.

11. The transceiver according to claim 5, wherein the network communicator unit is arranged to access a shared transmission medium by either of a time division multiple access method, a frequency division multiple access method, a code division multiple access method, or an orthogonal frequency division multiple access method.

12. The transceiver according to claim 5, wherein the network communicator unit is arranged to simultaneously transmit and receive signals via the antenna unit.

6. A transceiver arranged to assist in long distance communication in an auxiliary node, the transceiver comprising:

an antenna unit,

a network communicator unit connected to the antenna unit,

a synchronization unit, and

a transmission condition optimizer,

wherein the synchronization unit is arranged to synchronize use by the network communicator of at least one communications resource with a main node, determining a network geometry and a network propagation condition of a network comprising the main node, the destination node, and an auxiliary node, the auxiliary node is positioned based on said determined network geometry and propagation conditions to optimize transmission conditions for communication between the main node and the destination node, wherein determining the network geometry and the network propagation condition of the network further comprises constructing a propagation condition forecast based on changes in the network geometry and a network propagation condition of the network, and wherein positioning the auxiliary node comprises optimizing transmission conditions for communication between the main node and the destination node based on said propagation condition forecast, and wherein the signal processor unit is arranged to be received, by the network communicator unit an auxiliary signal and to retransmit said auxiliary signal as a forwarded auxiliary signal by the network communicator unit.

7. The transceiver according to claim 6, wherein the network communicator unit is arranged to apply a forward error correction, channel code prior to transmitting signals via the antenna unit.

8. The transceiver according to claim 6, wherein the network communicator unit is arranged to access a shared transmission medium by either of a time division multiple access method, a frequency division multiple access method, a code division multiple access method, or an orthogonal frequency division multiple access method.

9. The transceiver according to claim 6, wherein the network communicator unit is arranged to simultaneously transmit and receive signals via the antenna unit.