# US 2019/0246453 A1 · User equipment and base station

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- Number: US 2019/0246453 A1
- Document ID: US20190246453A1
- Status: Published application
- Kind: A1
- Application number: 16/344,501
- Filed: 2017-10-31
- Published: 2019-08-08
- Earliest claimed: 2016-11-02
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Yousuke Sano; Kazuki Takeda; Kazuaki Takeda; Daiki Takeda; Daisuke Murayama; Satoshi Nagata
- Web page: https://patentgrep.com/patent/US20190246453A1

## CPC

- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H04L 5/0082: {at predetermined intervals}
- H04L 5/1469: {using time-sharing}
- H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)}
- H04W 48/12: using downlink control channel
- H04W 72/04: Wireless resource allocation
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 74/0833: Random access procedures, e.g. with 4-step access
- H04L 5/0096: {Indication of changes in allocation}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Disclosed is a scheme of transmitting various types of radio signals for which interference between adjacent cells is considered in a radio communication system (for example, dynamic TDD) in which uplink communication and downlink communication can be dynamically switched. A feature of the present invention relates to user equipment including a transceiver that performs transmission and reception of a radio signal with a base station in accordance with a communication scheme in which uplink communication and downlink communication are dynamically switched and a signal processor that processes the radio signal, wherein the transceiver transmits a connection request signal generated by the signal processor in fixed uplink radio resources of the communication scheme.

## Claims

### Claim 1

A user equipment, comprising:
a transceiver that performs transmission and reception of a radio signal with a base station in accordance with a communication scheme in which uplink communication and downlink communication are dynamically switched; and
a signal processor that processes the radio signal,
wherein the transceiver transmits a connection request signal generated by the signal processor on fixed uplink radio resources of the communication scheme.

### Claim 2 (depends on 1)

The user equipment according to claim 1, wherein
the transceiver receives a cell residing information signal on fixed downlink radio resources of the communication scheme.

### Claim at position 3

-6. (canceled)