Mobile communication system and cell reselection method thereof
First Claim
1. A cell reselection method, comprising:
- measuring received signal strength of a satellite communication cell based at least partly on a terminal of a mobile communication system being switched to an idle mode;
determining priority of a satellite communication system relative to at least one terrestrial communication system using the measured received signal strength and location information of the terminal with respect to the at least one terrestrial communication system;
setting a first threshold value for cell reselection of the satellite communication system;
comparing the received signal strength with the first threshold value; and
comparing a value representing power variation of a received signal according to shadowing determined by the location information of the terminal with a second threshold value when the received signal strength is greater than the first threshold value.
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Accused Products
Abstract
Provided are a mobile communication system and a cell reselection method of a mobile communication terminal. The mobile communication system includes two or more communication systems using different transmission modes and a mobile communication terminal connectable to the two or more communication systems. The mobile communication terminal measures received signal strength of a satellite communication cell when being switched to an idle mode, divides priority of a satellite communication system using the measured received signal strength and location information of the mobile communication terminal, and sets a first threshold value necessary for cell reselection of the satellite communication system.
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Citations
18 Claims
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1. A cell reselection method, comprising:
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measuring received signal strength of a satellite communication cell based at least partly on a terminal of a mobile communication system being switched to an idle mode; determining priority of a satellite communication system relative to at least one terrestrial communication system using the measured received signal strength and location information of the terminal with respect to the at least one terrestrial communication system; setting a first threshold value for cell reselection of the satellite communication system; comparing the received signal strength with the first threshold value; and comparing a value representing power variation of a received signal according to shadowing determined by the location information of the terminal with a second threshold value when the received signal strength is greater than the first threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cell reselection method, comprising:
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determining whether a terminal in a mobile communication system connected to a satellite communication cell is switched to an idle mode; determining priority of a satellite communication system relative to a terrestrial communication system using location information of the terminal, at least partly in response to determining that the terminal is switched to the idle mode; setting a first threshold value for cell reselection of the satellite communication system; comparing a received signal strength of the satellite communication cell with the first threshold value; and comparing a value representing power variation of a received signal according to shadowing determined by the location information of the terminal with a second threshold value when the received signal strength is greater than the first threshold value. - View Dependent Claims (9, 10, 11, 12)
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13. A mobile communication system comprising:
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two or more communication systems using different transmission modes; and a mobile communication terminal connectable to the two or more communication systems, wherein the mobile communication terminal measures received signal strength of a satellite communication cell at least partly in response to being switched to an idle mode, determines priority of a satellite communication system relative to a terrestrial communication system using the measured received signal strength and location information of the mobile communication terminal, sets a first threshold value for cell reselection of the satellite communication system, compares the received signal strength with the first threshold value, and based at least partly on the received signal strength being greater than the first threshold value, compares a value representing power variation of a received signal according to shadowing determined by the location information of the mobile communication terminal with a second threshold value. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification