MOBILE COMMUNICATION TERMINAL DEVICE AND METHOD FOR SELECTING A VIRTUAL CARRIER FOR MACHINE-TYPE COMMUNICATIONS BASED ON MEASUREMENTS OF CHANNEL CONDITIONS

• US 20180007705A1
• Filed: 09/12/2017
• Published: 01/04/2018
• Est. Priority Date: 01/16/2013
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: WAKABAYASHI, Hideji, Webb, Matthew William, Morioka, Yuichi, Truelove, Stephen
• Granted Patent: US 10,420,125 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/0012 Hopping in multicarrier systems for frequency hopping in spread spectrum systems H04B1/713
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

An apparatus and method providing feedback on channel conditions in a wireless telecommunications system including a base station to communicate with plural terminals device using frequencies spanning a system frequency bandwidth. At least one terminal device is a reduced capability terminal device including a tuneable transceiver configured to receive downlink transmissions from the base station using only a restricted frequency bandwidth smaller than and within the system frequency bandwidth. The reduced capability terminal device is configured to communicate information derived from measurements of channel conditions to the base station. The information may include an indication of measured channel conditions for different frequency locations, or an indication of one or more frequency locations for which corresponding measurement of channel conditions meet a pre-defined selection criterion. The base station subsequently schedules downlink transmissions for the terminal device in a manner that takes account of the information received from the terminal device.

Claims

1. (canceled)

2. A method of operating a terminal device in a wireless telecommunications system comprising a base station arranged to communicate with a plurality of terminal devices using frequencies spanning a system frequency bandwidth, wherein the terminal device comprises a tunable transceiver configured to receive downlink transmissions from the base station using a restricted frequency bandwidth which is smaller than and within the system frequency bandwidth, the method comprising:

sequentially tuning the transceiver to different frequency locations for the restricted frequency bandwidth within the system frequency bandwidth and making measurements of channel conditions at the different frequency locations to provide a corresponding plurality of measurements of channel conditions; and

communicating information derived from the plurality of measurements of channel conditions to the base station, wherein

the different frequency locations for the restricted frequency bandwidth within the system frequency bandwidth comprise a plurality of predefined frequency locations

3. A method of operating a terminal device in a wireless telecommunications system comprising a base station arranged to communicate with a plurality of terminal devices using frequencies spanning a system frequency bandwidth, wherein the terminal device comprises a tunable transceiver configured to receive downlink transmissions from the base station using a restricted frequency bandwidth which is smaller than and within the system frequency bandwidth, the method comprising:

sequentially tuning the transceiver to different frequency locations for the restricted frequency bandwidth within the system frequency bandwidth and making measurements of channel conditions at the different frequency locations to provide a corresponding plurality of measurements of channel conditions; and

communicating information derived from the plurality of measurements of channel conditions to the base station, wherein

the information communicated to the base station comprises an indication of locations for the restricted frequency bandwidth within the system frequency bandwidth associated with measurements of channel conditions meeting a predefined criterion.