Integrated circuit for cqi reporting in wireless communication

Patent metadata

Field	Value
Publication number	US-2019349056-A1
Application number	US-201916520187-A
Country	US
Kind code	A1
Filing date	Jul 23, 2019
Priority date	Aug 19, 2005
Publication date	Nov 14, 2019
Grant date	—

Abstract

A mobile terminal includes circuitry, a transmitter and a receiver. The circuitry, in operation, generates a CQI for each subcarrier (SC) group of multiple subcarrier groups, a plurality of subcarriers consecutive in a frequency domain being grouped into the multiple subcarrier groups. The transmitter, in operation, reports first respective CQIs of the multiple SC groups in inconsecutive time resources based on a first period, and reports, based on a second period, second respective CQIs of the multiple SC groups in inconsecutive time resources based on the first period, the second period being longer than the first period. The receiver, in operation, receives information indicative of the first period.

First claim

1 . A base station, comprising:
a transmitter, which in operation transmits data to a mobile terminal using a plurality of consecutive subcarriers in a frequency domain, the plurality of subcarriers being grouped into multiple subcarrier groups; and a receiver, coupled to the transmitter, and which, in operation, receives channel quality indicators (CQIs) from the mobile terminal for subcarrier groups of the multiple subcarrier groups, wherein,
the CQIs are received in inconsecutive time resources,
first respective CQIs of each of the multiple subcarrier groups are received at a first periodicity,
second respective CQIs of each of the multiple subcarrier groups are received at the first periodicity; and
reporting of a first and a second CQI of a subcarrier group of the multiple subcarrier groups occurs at a second periodicity which is greater than the first periodicity.

2 . The base station of claim 1 wherein the receiving of the respective CQIs of the multiple subcarrier groups is cyclical.

3 . The base station of claim 1 wherein the subcarrier group for which the CQI is received changes in accordance with the first periodicity.

4 . The base station of claim 1 wherein at least two of the respective CQIs are received at a determined interval.

5 . The base station of claim 1 wherein at least two of the CQIs are received per a determined number of transmission time intervals (TTIs).

6 . The base station of claim 1 wherein subcarriers of a subcarrier group are consecutive in the frequency domain.

7 . The base station of claim 1 wherein a subcarrier group includes a plurality of resource blocks, and subcarriers of a resource block are consecutive in the frequency domain.

8 . The base station of claim 1 wherein a subcarrier group includes a plurality of subbands, and subcarriers of a subband are consecutive in the frequency domain.

9 . The base station of claim 1 wherein the transmitter transmits information indicative of the first periodicity.

10 . The base station of claim 1 wherein the transmitter transmits data to a plurality of mobile terminals and receives CQIs from the plurality of mobile terminals.

11 . A method, comprising:
transmitting data from a base station to a mobile terminal using a plurality of consecutive subcarriers in a frequency domain, the plurality of subcarriers being grouped into multiple subcarrier groups; and receiving, by the base station, channel quality indicators (CQIs) transmitted by the mobile terminal for subcarrier groups of the multiple subcarrier groups, wherein,
the CQIs are received in inconsecutive time resources,
first respective CQIs of each of the multiple subcarrier groups are received at a first periodicity,
second respective CQIs of each of the multiple subcarrier groups are received at the first periodicity; and
reporting of a first and a second CQI of a subcarrier group of the multiple subcarrier groups occurs at a second periodicity which is greater than the first periodicity.

12 . A non-transitory computer-readable medium having contents which configure processing circuitry of a base station to perform a method, the method comprising:
transmitting data to a mobile terminal using a plurality of consecutive subcarriers in a frequency domain, the plurality of subcarriers being grouped into multiple subcarrier groups; and receiving channel quality indicators (CQIs) transmitted by the mobile terminal for subcarrier groups of the multiple subcarrier groups, wherein,
the CQIs are received in inconsecutive time resources,
first respective CQIs of each of the multiple subcarrier groups are received at a first periodicity,
second respective CQIs of each of the multiple subcarrier groups are received at the first periodicity; and
reporting of a first and a second CQI of a subcarrier group of the multiple subcarrier groups occurs at a second periodicity which is greater than the first periodicity.

Assignees

• Godo Kaisha Ip Bridge 1

Inventors

• Toda Takashi
• Nishio Akihiko
• Imamura Daichi

Classifications

• H04L1/0026 Primary

  Transmission of channel quality indication · CPC title

• H04W24/00

  Supervisory, monitoring or testing arrangements · CPC title

• H04L5/006

  Quality of the received signal, e.g. BER, SNR, water filling · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title

• H04L1/0035

  evaluation of received explicit signalling · CPC title