Communication device and communication method
AssigneeSony Corporation
InventorHiromasa Uchiyama
Life of this patent
Estimating the term…
Abstract
[Object] To provide innovation with respect to which synchronization signal a communication device uses to conduct a synchronization process. [Solution] Provided is a communication device including: a selection unit configured to select a synchronization signal from respective synchronization signals received from two or more other devices on a basis of origin information that is acquired by communication with another device and that indicates an origin of a synchronization signal used for acquisition of synchronization timing in the other device; and a synchronization processing unit configured to acquire synchronization timing using the synchronization signal selected by the selection unit.
Claims15
A mobile communication device comprising:
- circuitry configured to
- select a synchronization signal from a first synchronization signal received from a first device and a second synchronization signal received from a second device after no longer being able to receive an initial synchronization signal due to the mobile communication device entering low signal strength area,
- wherein the synchronization signal is selected based on first origin information that indicates a first synchronization signal origin and second origin information that indicates a second synchronization signal origin,
- wherein the first synchronization signal origin is one of a global positioning satellite (GPS) satellite, a base station, a roadside unit (RSU) or a mobile device, and the second synchronization signal origin is another of the GPS satellite, the base station, the roadside unit or the mobile device;
- and
- acquire synchronization timing using the selected synchronization signal,
- wherein the low signal strength area is a tunnel, and the circuitry is configured to use a lane ID that indicates which road the mobile communication device has moved along as a movement condition of the mobile communication device for selecting the synchronization signal.
The mobile communication device according to claim wherein
- the first relay information indicates a first number of hops from the first source that initially provided the first synchronization signal to the first device, and
- the second relay information indicates a second number of hops from the second source that initially provided the second synchronization signal to the second device,
- wherein the first number of hops and the second number of hops are independent integers equal to or greater than zero.
A communication method performed by a mobile terminal, the method comprising:
- selecting a synchronization signal from a first synchronization signal received from a first device and a second synchronization signal received from a second device after no longer being able to receive an initial synchronization signal due to the mobile communication device entering low signal strength area,
- wherein the synchronization signal is selected based on first origin information that indicates a first synchronization signal origin and second origin information that indicates a second synchronization signal origin,
- wherein the first synchronization signal origin is one of a global positioning satellite (GPS) satellite, a base station, a roadside unit (RSU) or a mobile device, and the second synchronization signal origin is another of the GPS satellite, the base station, the roadside unit or the mobile device;
- and
- acquiring synchronization timing using the selected synchronization signal,
- wherein the low signal strength area is a tunnel, and the circuitry is configured to use a lane ID that indicates which road the mobile communication device has moved along as a movement condition of the mobile communication device for selecting the synchronization signal.
Dependencies are inferred from the claim text.