Terminal device, base station device, communication system, measurement method, and integrated circuit

Patent metadata

Field	Value
Publication number	US-2018227973-A1
Application number	US-201615750834-A
Country	US
Kind code	A1
Filing date	Aug 5, 2016
Priority date	Aug 7, 2015
Publication date	Aug 9, 2018
Grant date	—

Abstract

A terminal device, a base station device, a communication system, a measurement method, and an integrated circuit, which are capable of efficiently performing Sidelink Direct Discovery, are provided. In the terminal device, a reception unit is configured to receive an RRC connection reconfiguration message including a first configuration related to Sidelink Direct Discovery, and in a case where the first configuration includes frequency information, to attempt to acquire configuration information about monitoring of a Sidelink Direct Discovery announcement at a frequency indicated by the frequency information, using a timer configured to count a predetermined time and while the timer is counting, by acquiring system information to be broadcast at the frequency.

First claim

1 .- 5 . (canceled)

6 . A terminal device comprising:
receiving circuitry configured to receive an RRC message including first configuration related to a Sidelink Direct Discovery; and controlling circuitry configured to start a timer with a predetermined value being configured, in a case that frequency information is included in the first configuration; wherein the receiving circuitry is further configured to attempt to acquire configuration information related to a Sidelink Direct Discovery announcement monitoring, from system information broadcasted in a frequency indicated by the frequency information, while the timer is running.

7 . A base station device comprising:
generating circuitry configured to generate an RRC message including first configuration related to a Sidelink Direct Discovery, wherein the first configuration causes a terminal device to start a timer with a predetermined value being configured, in a case that frequency information is included in the first configuration; and transmitting circuitry configured to transmit the RRC message to the terminal device; wherein the transmitting circuitry is further configured to broadcast system information including configuration information related to a Sidelink Direct Discovery announcement monitoring, in a frequency indicated by the frequency information, wherein the configuration information is information which the terminal device attempts to acquire from the system information while the timer is running.

8 . A method performed by a terminal device comprising:
receiving an RRC message including first configuration related to a Sidelink Direct Discovery; starting a timer with a predetermined value being configured, in a case that frequency information is included in the first configuration; and attempting to acquire configuration information related to a Sidelink Direct Discovery announcement monitoring, from system information broadcasted in a frequency indicated by the frequency information, while the timer is running.

9 . A method performed by a base station device comprising:
generating an RRC message including first configuration related to a Sidelink Direct Discovery, wherein the first configuration causes a terminal device to start a timer with a predetermined value being configured, in a case that frequency information is included in the first configuration; transmitting the RRC message to the terminal device; and broadcasting system information including configuration information related to a Sidelink Direct Discovery announcement monitoring, in a frequency indicated by the frequency information, wherein the configuration information is information which the terminal device attempts to acquire from the system information while the timer is running.

Assignees

• Sharp Kk

Inventors

• Tsuboi Hidekazu
• Uemura Katsunari
• Yamada Shohei

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W8/005

  Discovery of network devices, e.g. terminals · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W48/12

  using downlink control channel · CPC title

• H04W76/14 Primary

  Direct-mode setup · CPC title