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US 2009/0154370 A1Published application
Mobile Communication Device and Reception Quality Information Creation Method
AssigneeNEC Corporation
InventorKeiko Yamaguchi
Life of this patent
Estimating the term…
Abstract
When a processing delay detection unit (27) detects that an end timing (F) of measurement of the reception quality of a common pilot signal transmitted from a wireless base station has delayed from a creation start time limit for reception quality information, approximate reception quality information (k) is created on the basis of reception quality measured before the creation start time limit. The approximate reception quality information is transmitted to a wireless base station. The delay of the transmission timing of the reception quality information can be prevented, and the wireless base station can quickly set the transmission rate of transmission data to a cellular phone.
Claims15
A mobile communication device comprising:
- a reception quality information creation unit which measures reception quality of a downlink signal transmitted from a wireless base station via a downlink at a predetermined time interval in a predetermined section in each frame of the downlink signal and creating reception quality information representing reception quality of the downlink signal on the basis of the measurement result;
- a transmission unit which transmits the reception quality information created by said reception quality information creation unit to the wireless base station via an uplink;
- and
- a reception unit which receives transmission data at a transmission rate set by the wireless base station on the basis of the reception quality information,
- said reception quality information creation unit comprising
- a processing delay detection unit which determines whether an end timing of measurement of reception quality has delayed from a predetermined creation start time limit of reception quality information, and
- a reception quality information output unit which calculates approximate reception quality information on the basis of reception quality measured before the creation start time limit when said processing delay detection unit determines that the end timing has delayed, and outputting calculated approximate reception quality information as the reception quality information.
4 more elements
A reception quality information creation method comprising the steps of:
- measuring reception quality of a downlink signal transmitted from a wireless base station via a downlink at a predetermined time interval in a predetermined section in each frame of the downlink signal and creating reception quality information representing reception quality of the downlink signal on the basis of the measurement result;
- transmitting the created reception quality information to the wireless base station via an uplink;
- and
- receiving transmission data at a transmission rate set by the wireless base station on the basis of the reception quality information,
- wherein the creating step comprises the steps of
- determining whether an end timing of measurement of reception quality has delayed from a predetermined creation start time limit of reception quality information, and
- calculating approximate reception quality information on the basis of reception quality measured before the creation start time limit when it is determined that the end timing has delayed, and outputting calculated approximate reception quality information as the reception quality information.
4 more elements
A mobile communication device comprising:
- reception quality information creation means for measuring reception quality of a downlink signal transmitted from a wireless base station via a downlink at a predetermined time interval in a predetermined section in each frame of the downlink signal and creating reception quality information representing reception quality of the downlink signal on the basis of the measurement result;
- transmission means for transmitting the reception quality information created by said reception quality information creation means to the wireless base station via an uplink;
- and
- reception means for receiving transmission data at a transmission rate set by the wireless base station on the basis of the reception quality information,
- said reception quality information creation means comprising
- processing delay detection means for determining whether an end timing of measurement of reception quality has delayed from a predetermined creation start time limit of reception quality information, and
- reception quality information output means for calculating approximate reception quality information on the basis of reception quality measured before the creation start time limit when said processing delay detection means determines that the end timing has delayed, and outputting calculated approximate reception quality information as the reception quality information.
4 more elements
Dependencies are inferred from the claim text.