INFORMATION PROCESSING APPARATUS AND COMMUNICATION APPARATUS

• US 20080037450A1
• Filed: 07/03/2007
• Published: 02/14/2008
• Est. Priority Date: 11/16/2000
• Status: Active Grant

• Current Assignee: Katsutoshi Itoh, Masanori Sato
• Original Assignee: Katsutoshi Itoh, Masanori Sato
• Inventors: Sato, Masanori, Itoh, Katsutoshi
• Granted Patent: US 7,983,620 B2
• Time in Patent Office: Days
• US Class Current: 370/278
• CPC Class Codes: H04B 17/382 for resource allocation, admission control or handover
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0015 characterised by the adaptation strategy
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0028 Formatting
• CPC Class Codes: H04L 1/0035 evaluation of received explicit signalling
• CPC Class Codes: H04L 1/1671 the supervisory signal being transmitted together with control information
• CPC Class Codes: H04L 1/1874 Buffer management
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/10 Open loop power control
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/265 taking into account the quality of service QoS
• CPC Class Codes: H04W 52/267 taking into account the information rate
• CPC Class Codes: H04W 52/40 during macro-diversity or soft handoff
• CPC Class Codes: H04W 52/54 Signalisation aspects of the TPC commands, e.g. frame structure
• CPC Class Codes: H04W 52/60 using different transmission rates for TPC commands
• CPC Class Codes: H04W 88/02 : Terminal devices
• CPC Class Codes: H04W 88/08 : Access point devices

Abstract

The present invention relates to an information processing apparatus and a communication apparatus for accurately recognizing at the base station the current receiving quality of the mobile terminals for improving the throughput of the base station. A mobile terminal 61 determines its own receiving quality based on the signal received from the base station 62 for generating the receiving quality message indicating the receiving quality and generates the power control information requesting the transmission power of the base station 62. The receiving quality message is transmitted at a frame rate and power control information is transmitted at the slot rate to the base station 62. Based on both the receiving quality message and power control information, the base station 62 estimates the current receiving quality of the mobile terminal 61 and adaptive modulation and coding is performed based on the estimated value. The present invention may be applied to cellular phones and base stations.

Claims

1. An information processing apparatus for calculating receiving quality of a communication apparatus, comprising:

receiving quality message acquisition means for acquiring a receiving quality message indicating the receiving quality transmitted from the communication apparatus at a first interval and calculated in the communication apparatus;

power control information acquisition means for acquiring a power control information requesting transmission power adjustment transmitted from the communication apparatus at a second interval shorter than the first interval; and

receiving quality estimation means for estimating a current receiving quality of the communication apparatus based on both the receiving quality message and power control information.

2-67. -67. (canceled)