Device for narrow-band communication in a multi-carrier system
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSten Sjöberg, Ulf Hansson
Life of this patent
Estimating the term…
Abstract
A central unit for a multi-carrier system receives both multi-carrier and single carrier signals. The single carrier wave is a carrier wave that is part of the multi-carrier system for which the central unit is designed. The central unit schedules transmission from the single-carrier equipment in interaction with the single-carrier equipment.
Claims25
A central unit for a multi-carrier system, comprising:
- multiple carrier wave reception equipment for the reception of a signal transmitted using multiple carrier waves from a multiple carrier unit;
- subset carrier wave reception equipment for the reception of a signal transmitted on a subset of carrier waves from a subset-carrier unit equipped for transmitting a subset of the carrier waves in the multi-carrier system, where the subset of carrier waves corresponds to any subset of the carrier waves in the multi-carrier system;
- and
- a scheduler for scheduling the signal transmission from the subset-carrier unit on the subset of carrier waves by communicating with the subset-carrier unit using a first transmission frame format modified from a second transmission frame format used for communications between the multiple carrier unit in the multi-carrier system and the central unit.
Subset-carrier equipment, arranged for transmitting a subset of the carrier waves in a multi-carrier system, for use in a multi-carrier system including a central unit that communicates with multiple carrier units using multiple carriers, comprising:
- a receiver for receiving a multi-carrier transmission from the central unit in the multi-carrier system;
- a transmitter for transmitting a subset carrier transmission, using a subset of the carrier waves in the multi-carrier system where the subset of carrier waves corresponds to any subset of the carrier waves in the multi-carrier system, to the central unit;
- and
- a scheduler for scheduling the subset carrier transmission to the central unit on a subset of the multiple carrier waves used in the multi-carrier system,
- wherein the scheduler is configured to communicate with the central unit using a first transmission frame format modified from a second transmission frame format used for communications between a multiple carrier unit in the multi-carrier system and the central unit.
A method implemented in a central unit for a multi-carrier system, comprising:
- receiving a signal transmitted using multiple carrier waves from a multiple carrier unit, and
- receiving a signal transmitted on a subset of carrier waves from a subset-carrier unit equipped for transmitting a subset of the multiple carrier waves in the multi-carrier system, where the subset of carrier waves corresponds to any subset of the multiple carrier waves in the multi-carrier system;
- and
- wherein the signal transmission from the subset-carrier unit on the subset of carrier waves uses a first transmission frame format modified from a second transmission frame format used for communications between the multiple carrier unit and the central unit.
A method implemented in a subset-carrier equipment arranged for transmitting a subset of multiple carrier waves in a multi-carrier system including a central unit that communicates with multiple carrier units using multiple carriers, comprising:
- receiving a multi-carrier transmission from the central unit in a multi-carrier system;
- transmitting a subset carrier transmission, using a subset of the carrier waves in the multi-carrier system where the subset of carrier waves corresponds to any subset of the carrier waves in the multi-carrier system, to the central unit;
- and
- communicating the signal transmission from the subset-carrier equipment, on the subset of the multiple carrier wave, using a first transmission frame format modified from a second transmission frame format used for communications between a multiple carrier unit in the multi-carrier system and the central unit.
Dependencies are inferred from the claim text.