Invention Grant
- Patent Title: Method and device for enabling direct communication between terminals using pseudo-random access procedure
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Application No.: US14899513Application Date: 2014-07-01
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Publication No.: US09967904B2Publication Date: 2018-05-08
- Inventor: Hakseong Kim , Hanbyul Seo
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG ELECTRONICS INC.
- Current Assignee: LG ELECTRONICS INC.
- Current Assignee Address: KR Seoul
- Agency: Lee Hong Degerman Kang Waimey
- International Application: PCT/KR2014/005859 WO 20140701
- International Announcement: WO2015/002438 WO 20150108
- Main IPC: H04W74/08
- IPC: H04W74/08 ; H04W76/02 ; H04W88/04 ; H04W72/04 ; H04W4/00 ; H04W4/06 ; H04W72/00

Abstract:
The present document presents a method and device for transmitting and receiving a signal by using direct communication (D2D communication) between terminals by using a pseudo-RACH procedure in a wireless communication system. A transmission terminal performing the method randomly selects one of a certain number of D2D communication signatures to transmit a first message through a resource randomly selected from among predetermined time-frequency resources to a base station, and receives a second message including control information for a D2D broadcast or groupcast signal transmission from the base station, wherein the transmission terminal uses control information received through the second message to transmit a third message including a groupcast signal or the D2D broadcast to one or more reception terminals.
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