IP Library › Granted Patent US 12,592,787
Granted Patent B2
US 12,592,787 · App. 18/895,159 · Granted Mar 31, 2026

Mobile station and reception quality measurement method

Inventors: Ayako Horiuchi (Kanagawa, JP); Masayuki Hoshino (Kanagawa, JP); Seigo Nakao (Singapore, SG)
Assignee: Panasonic Intellectual Property Corporation of America
H04B17/328H04L5/005H04W48/12
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Quick Facts
Patent No.
US 12,592,787
App. No.
18/895,159
Granted
Mar 31, 2026
Kind
B2
Abstract

Received Signal Strength Indicator (RSSI) is measured accurately even in a case where a discovery signal is transmitted. A receiver receives a plurality of subframes, at least one of which includes a discovery signal, and a measurer measures Reference Signal Reception Power (RSRP) using a first resource in which the discovery signal is mapped, measures RSSI using a second resource different from the first resource for which the discovery signal is mapped, and calculates Reference Signal Reception Quality (RSRQ) using RSRP and RSSI.

Claims (9)

1 . An integrated circuit, comprising:

transmission circuitry, which in operation, controls a transmission of control information indicating subframes to be used in measuring discovery signals; and

reception circuitry, which in operation, controls a reception of a result of Reference Signal Reception Quality (RSRQ), the RSRQ being measured by a communication apparatus based on Reference Signal Reception Power (RSRP) and Received Signal Strength Indicator (RSSI) by using the subframes indicated by the control information,

wherein a number of first resource elements used for measuring the RSSI within the subframes is greater than a number of second resource elements used for measuring the RSRP.

2 . The integrated circuit according to claim 1 , wherein the RSRP is measured based on the discovery signals in the subframes.

3 . The integrated circuit according to claim 1 , wherein a portion of the first resource elements used for the measurement of the RSSI in the subframes is adjacent along a time axis to the second resource elements used for the measurement of the RSRP in the subframes.

4 . The integrated circuit according to claim 1 , wherein the control information includes information regarding a period of the subframes to be used in measuring discovery signals.

5 . The integrated circuit according to claim 1 , wherein a discovery signal is one of a Channel State Information (CSI)-RS, a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Cell specific RS (CRS).

6 . The integrated circuit according to claim 1 , wherein a discovery signal is a signal transmitted from an OFF-state cell which has no traffic data to be transmitted.

Priority Claims (1)
JP 2013-267112 · Dec 25, 2013 · national
Continuity (7)
Continuation 18334145 · Jun 13, 2023
Continuation 17478003 · Sep 17, 2021
Continuation 16844645 · Apr 9, 2020
Continuation 16033123 · Jul 11, 2018
Continuation 15088263 · Apr 1, 2016
Continuation PCTJP2014006063 · Dec 4, 2014
Related Publication 20250015908A1 · Jan 9, 2025
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