# US 10,313,072 B2 · Communication system, base station, mobile station, method for mobile station, and method for communication system

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- Number: US 10,313,072 B2
- Document ID: US10313072B2
- Status: Granted
- Kind: B2
- Application number: 15/696,790
- Filed: 2017-09-06
- Published: 2017-12-21
- Granted: 2019-06-04
- Earliest claimed: 2006-04-28
- Assignees: NEC Corporation
- Applicants: NEC Corporation
- Inventors: Kengo Oketani; Yoshikazu Kakura
- Web page: https://patentgrep.com/patent/US10313072B2

## CPC

- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04J 13/0059: {CAZAC [constant-amplitude and zero auto-correlation]}
- H04J 13/0062: {Zadoff-Chu}
- H04J 13/16: Code allocation
- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04W 28/04: Error control
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/20: Control channels or signalling for resource management
- H04W 72/21: in the uplink direction of a wireless link, i.e. towards the network
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04B 2201/70701: featuring pilot assisted reception
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04W 72/04: Wireless resource allocation
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION

## Abstract

A device and method is which plurality of Zadoff-Chu sequences is allocated to a frame, a value of a parameter in the Zadoff-Chu sequence is different among the plurality of Zadoff-Chu sequences, and the Zadoff-Chu sequence allocated to the frame is different among a plurality of cells.

## Claims

### Claim 1

A mobile station comprising:
a processor configured to:
generate a first signal based on a first Zadoff-Chu sequence;
generate a second signal based on a second Zadoff-Chu sequence;
wherein the first and second Zadoff-Chu sequences are defined by a formula including a parameter, wherein a first value of the parameter for the first Zadoff-Chu sequence is different than a second value of the parameter for the second Zadoff-Chu sequence,
wherein the parameter is based on a first information received from a base station; and
a transmitter configured to transmit the first signal in a first portion of a subframe, and transmit the second signal in a second portion of the subframe.

### Claim 2 (depends on 1)

The mobile station according to claim 1, wherein the formula for each of the first and second Zadoff-Chu sequences comprises: Ck(n)=exp[−(j2πk/N)(n(n+1)/2+qn)], k in the formula is the parameter, and q in the formula is an arbitrary integer.

### Claim 3 (depends on 2)

The mobile station according to claim 2, wherein the parameter k is a positive integer.

### Claim 4 (depends on 2)

The mobile station according to claim 2, wherein the first signal and the second signal are transmitted by single carrier transmission.

### Claim 5 (depends on 2)

The mobile station according to claim 2, wherein the first portion and the second portionH are different in a time domain.

### Claim 6

A method comprising:
generating a first signal based on a first Zadoff-Chu sequence;
generating a second signal based on a second Zadoff-Chu sequence;
wherein the first and second Zadoff-Chu sequences are defined by a formula including a parameter,
wherein a first value of the parameter for the first Zadoff-Chu sequence is different than a
second value of the parameter for the second Zadoff-Chu sequence,
wherein the parameter is based on a first information received from a base station;
transmitting the first signal in a first portion of a subframe; and
transmitting the second signal in a second portion of the subframe.

### Claim 7 (depends on 6)

The method according to claim 6, wherein the formula for each of the first and second Zadoff-Chu sequences comprises: Ck(n)=exp[−(j2πk/N)(n(n+1)/2+qn)], k in the formula is the parameter, and q in the formula is an arbitrary integer.

### Claim 8 (depends on 7)

The method according to claim 7, wherein the parameter k is a positive integer.

### Claim 9 (depends on 7)

The method according to claim 7, wherein the first signal and the second signal are transmitted by single carrier transmission.

### Claim 10 (depends on 7)

The method according to claim 7, wherein the first portion and the second portion are different in a time domain.