# US 12,003,325 B2 · Mobile communication system

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- Number: US 12,003,325 B2
- Document ID: US12003325B2
- Status: Granted
- Kind: B2
- Application number: 15/164,586
- Filed: 2016-05-25
- Published: 2016-09-15
- Granted: 2024-06-04
- Earliest claimed: 2009-06-19
- Assignees: Mitsubishi Electric Corporation
- Applicants: Mitsubishi Electric Corporation
- Inventors: Miho Maeda; Mitsuru Mochizuki; Taiga Saegusa; Yasushi Iwane
- Web page: https://patentgrep.com/patent/US12003325B2

## CPC

- H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04W 72/20: Control channels or signalling for resource management
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)}
- H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00)
- H04W 88/02: Terminal devices
- H04W 88/12: Access point controller devices
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

In a mobile communication system according to the present invention, with the separate use of a plurality of component carriers or with the use of a carrier set including the plurality of component carriers aggregated, a base station performs radio communication with a user equipment corresponding to the component carrier or a user equipment corresponding to the aggregated carriers. In particular, in a case where the base station performs radio communication with the user equipment corresponding to the aggregated carriers with the use of the aggregated carriers, each of a plurality of transport blocks created by dividing a transport channel is transmitted per each of the plurality of component carriers constituting the aggregated carriers, and control information related to radio communication between the base station and the user equipment corresponding to the aggregated carriers is transmitted such that physical information of the corresponding component carrier is identifiable.

## Claims

### Claim 1

A mobile communication system in which with a use of aggregated carriers including a plurality of component carriers aggregated by carrier aggregation, comprising:
a user equipment; and
a base station configured to perform radio communication with the user equipment,
wherein
when transmission or reception of information is performed between the user equipment and the base station, the base station is configured to transmit component carrier information to the user equipment with a use of an RRC message or the user equipment is configured to transmit the component carrier information to the base station with the use of the RRC message, the component carrier information indicating a component carrier of the plurality of component carriers to which the information relates.

### Claim 2

A user equipment that performs radio communication with a base station with a use of aggregated carriers including a plurality of component carriers aggregated by carrier aggregation, comprising:
an antenna; and
circuitry including a controller, wherein
when the circuitry is configured to transmit or receive information with the base station, the circuitry is configured to transmit component carrier information to the base station with a use of an RRC message or receive the component carrier information from the base station with the use of the RRC message, the component carrier information indicating a component carrier of the plurality of component carriers to which the information relates.

### Claim 3

A base station that performs radio communication with a user equipment with a use of aggregated carriers including a plurality of component carriers aggregated by carrier aggregation, comprising:
an antenna; and
circuitry including a controller, wherein
when the circuitry is configured to transmit and receive information with the user equipment, the circuitry is configured to transmit component carrier information to the user equipment with a use of an RRC message or receive the component carrier information from the user equipment with the use of the RRC message, the component carrier information indicating a component carrier of the plurality of component carriers to which the information relates.