Mobile communication system and mobile communication method
AssigneeNtt Docomo, Inc.
InventorsMasafumi Usuda, Takehiro Nakamura
Life of this patent
Estimating the term…
Abstract
An estimator 120 of a mobile station 100a of the present invention estimates traveling speed information which is a value variable with either a traveling speed of the mobile station or a variation in the traveling speed. A comparison unit 130 or a comparison unit 320 compares the traveling speed information estimated by the estimator with a threshold defined as a value of traveling speed information for achieving a desired level of communication quality which varies depending on the traveling speed. A selector 150 or a selector 340 selects an applicable frequency band in response to a result of comparison.
Claims10
A mobile communication system configured to allow a mobile station and a radio base station to execute communication using a specific frequency band, the mobile communication system comprising:
- an estimator configured to estimate traveling speed information which is a value variable with a traveling speed of the mobile station or a variation in the traveling speed;
- a comparison unit configured to compare the traveling speed information estimated by the estimator with a threshold defined as a value of traveling speed information for achieving a desired level of communication quality which varies depending on the traveling speed;
- and
- a selector configured to select a frequency band to be used for communication between the mobile station and the radio base station in response to a result of comparison by the comparison unit.
A mobile communication method for executing communication between a mobile station and a radio base station using a specific frequency band, the method comprising the steps of:
- estimating traveling speed information which is a value variable with a traveling speed of the mobile station or a variation in the traveling speed;
- comparing the estimated traveling speed information with a threshold defined as a value of traveling speed information for achieving a desired level of communication quality which varies depending on the traveling speed, and
- selecting a frequency band to be used for communication between the mobile station and the radio base station in response to a result of comparison.
Dependencies are inferred from the claim text.