# US 2020/0404459 A1 · Radio terminal and base station

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- Number: US 2020/0404459 A1
- Document ID: US20200404459A1
- Status: Published application
- Kind: A1
- Application number: 17/013,471
- Filed: 2020-09-04
- Published: 2020-12-24
- Earliest claimed: 2016-11-04
- Assignees: KYOCERA Corporation
- Applicants: KYOCERA Corporation
- Inventors: Masato FUJISHIRO; Hiroyuki ADACHI; Henry CHANG
- Web page: https://patentgrep.com/patent/US20200404459A1

## CPC

- H04W 4/06: Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04L 5/06: the signals being represented by different frequencies (combined with time-division multiplexing H04L5/26)
- H04L 12/18: for broadcast or conference {, e.g. multicast}
- H04L 12/189: {in combination with wireless systems (selective distribution or broadcast in wireless communication networks H04W4/06)}
- H04L 49/201: Multicast operation; Broadcast operation
- H04W 4/12: Messaging; Mailboxes; Announcements
- H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC]
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 48/20: Selecting an access point
- H04W 84/045: {using private Base Stations, e.g. femto Base Stations, home Node B}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A user equipment, a method and an apparatus supporting Multimedia Broadcast Multicast Service (MBMS) service provided via Single Cell Point-To-Multipoint (SC-PTM) perform a cell reselection operation for selecting a cell different from a current serving cell as a serving cell. When the user equipment is in an enhanced coverage, the cell reselection is performed according to a ranking based on a radio quality irrespective of frequency priority, and when the user equipment is in the enhanced coverage and the user equipment is receiving or interested in receiving an MBMS service via the SC-PTM, the ranking is performed on cells belonging to a SC-PTM frequency where the MBMS service is provided.

## Claims

### Claim 1

A user equipment supporting Multimedia Broadcast Multicast Service (MBMS) service provided via Single Cell Point-To-Multipoint (SC-PTM), the user equipment comprising:
a processor and a memory coupled to the processor, wherein
the processor is configured to perform a cell reselection operation for selecting a cell different from a current serving cell as a serving cell,
when the user equipment is in an enhanced coverage, the processor is configured to perform the cell reselection according to a ranking based on a radio quality irrespective of frequency priority, and
when the user equipment is in the enhanced coverage and the user equipment is receiving or interested in receiving an MBMS service via the SC-PTM, the processor is configured to perform the ranking on cells belonging to a SC-PTM frequency where the MBMS service is provided

### Claim 2

A method used in a user equipment supporting Multimedia Broadcast Multicast Service (MBMS) service provided via Single Cell Point-To-Multipoint (SC-PTM), the method comprising:
performing a cell reselection operation for selecting a cell different from a current serving cell as a serving cell, the user equipment, wherein
performing the cell reselection operation includes:
performing a ranking based on a radio quality irrespective of frequency priority, when the user equipment is in an enhanced coverage; and
performing the cell reselection according to the ranking, wherein
performing the ranking includes:
when the user equipment is in the enhanced coverage and the user equipment is receiving or interested in receiving an MBMS service via the SC-PTM, performing the ranking on cells belonging to a SC-PTM frequency where the MBMS service is provided.

### Claim 3

An apparatus for controlling a user equipment supporting Multimedia Broadcast Multicast Service (MBMS) service provided via Single Cell Point-To-Multipoint (SC-PTM), the apparatus comprising:
a processor and a memory coupled to the processor, wherein
the processor is configured to perform a cell reselection operation for selecting a cell different from a current serving cell as a serving cell,
when the user equipment is in an enhanced coverage, the processor is configured to perform the cell reselection according to a ranking based on a radio quality irrespective of frequency priority, and
when the user equipment is in the enhanced coverage and the user equipment is receiving or interested in receiving an MBMS service via the SC-PTM, the processor is configured to perform the ranking on cells belonging to a SC-PTM frequency where the MBMS service is provided.