Integrated circuit for controlling a process
AssigneePanasonic Intellectual Property Corporation of America
InventorsYoshihiko Ogawa, Daichi Imamura, Kenichi Miyoshi, Takashi Iwai, Tomofumi Takata
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Abstract
Provided is a cyclic shift sequence generation method which can prevent coming of an interference wave into a desired wave detection window even if a cyclic shift sequence has a high mutual correlation in different bandwidths, thereby improving a channel estimation accuracy in a base station. In this method, a cyclic shift sequence number to be allocated to a cell is decided in advance. Moreover, when the cyclic shift amount between cyclic shift sequences allocated in cells is Δ1 and the cyclic shift amount of the cyclic shift sequences allocated between the cells is Δ2, Δ1 and Δ2 are made different when generating a cyclic shift sequence.
Claims19
An integrated circuit for controlling a process comprising:
- receiving control information transmitted from a base station;
- generating a reference signal based on a cyclic shift number out of a plurality of cyclic shift numbers, the cyclic shift number being given by the control information;
- and
- transmitting the reference signal,
- wherein the plurality of cyclic shift numbers includes two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a first interval, and two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a second interval different from the first interval.
An integrated circuit for controlling a process comprising:
- transmitting control information to a terminal;
- receiving a reference signal, which is generated based on a cyclic shift number out of a plurality of cyclic shift numbers and which is transmitted from the terminal, the cyclic shift number being given by the control information;
- and
- wherein the plurality of cyclic shift numbers includes two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a first interval, and two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a second interval different from the first interval.
An integrated circuit comprising:
- at least one input;
- and
- circuitry coupled to the at least one input, wherein the circuitry, in operation:
- controls reception of control information transmitted from a base station;
- controls generation of a reference signal based on a cyclic shift number out of a plurality of cyclic shift numbers, the cyclic shift number being given by the control information;
- and
- controls transmission of the reference signal,
- wherein the plurality of cyclic shift numbers includes two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a first interval, and two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a second interval different from the first interval.
An integrated circuit comprising:
- at least one input;
- and
- circuitry coupled to the at least one input, wherein the circuitry, in operation:
- controls transmission of control information to a terminal;
- and
- controls reception of a reference signal, which is generated based on a cyclic shift number out of a plurality of cyclic shift numbers and which is transmitted from the terminal, the cyclic shift number being given by the control information,
- wherein the plurality of cyclic shift numbers includes two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a first interval, and two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a second interval different from the first interval.
A communication apparatus comprising:
- a receiver which, in operation, receives control information transmitted from a base station;
- circuitry which, in operation, generates a reference signal based on a cyclic shift number out of a plurality of cyclic shift numbers, the cyclic shift number being given by the control information;
- and
- a transmitter which, in operation, transmits the reference signal,
- wherein the plurality of cyclic shift numbers includes two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a first interval, and two cyclic shift numbers, which are next to each other in order of cyclic shift number and a difference between which is a second interval different from the first interval.
Dependencies are inferred from the claim text.