Transporting residue of vehicle position data via wireless network
First Claim
1. A vehicle-mounted terminal for transporting residue of vehicle position data via a wireless network, comprising:
- a data acquisition device, configured to obtain position data of a vehicle;
an encoding schema updating device, configured to calculate a probability of occurrence of a residue corresponding to the vehicle according to a normalized residue distribution, and construct a residue encoding schema according to the probability of occurrence utilizing data received from a backend server via the wireless network, thereby producing a constructed residue encoding schema;
a storage device, configured to store the constructed residue encoding schema; and
an encoder, configured to generate a corresponding code of a residue according to the constructed residue encoding schema;
wherein;
the vehicle-mounted terminal is located in the vehicle;
the constructed residue encoding schema is constructed such that each residue of the constructed residue encoding schema corresponds to one code; and
the constructed residue encoding schema is constructed such that a residue with a relatively high probability of occurrence corresponds to a code of relatively short length.
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Accused Products
Abstract
The invention relates to compressed data transmission in wireless data communication. Disclosed are methods and apparatuses for transporting residue of vehicle position data via a wireless network. A disclosed method for transporting residue of vehicle position data via a wireless network, includes the steps of: receiving data for updating residue encoding schema from a monitoring server; constructing a residue encoding schema based on the data, thereby producing a constructed residue encoding schema; and storing the constructed residue encoding schema such that the constructed residue encoding schema will become the current residue encoding schema; where: the constructed residue encoding schema is constructed such that each residue of the constructed residue encoding schema corresponds to a code; and the constructed residue encoding schema is constructed such that a residue having a relatively high probability of occurrence corresponds to a code of relatively short length.
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Citations
5 Claims
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1. A vehicle-mounted terminal for transporting residue of vehicle position data via a wireless network, comprising:
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a data acquisition device, configured to obtain position data of a vehicle; an encoding schema updating device, configured to calculate a probability of occurrence of a residue corresponding to the vehicle according to a normalized residue distribution, and construct a residue encoding schema according to the probability of occurrence utilizing data received from a backend server via the wireless network, thereby producing a constructed residue encoding schema; a storage device, configured to store the constructed residue encoding schema; and an encoder, configured to generate a corresponding code of a residue according to the constructed residue encoding schema; wherein; the vehicle-mounted terminal is located in the vehicle; the constructed residue encoding schema is constructed such that each residue of the constructed residue encoding schema corresponds to one code; and the constructed residue encoding schema is constructed such that a residue with a relatively high probability of occurrence corresponds to a code of relatively short length. - View Dependent Claims (2, 3, 4, 5)
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Specification