CN104838609A

5G,4G

Title

METHOD FOR OBTAINING SYNCHRONIZATION FOR DEVICE-TO-DEVICE COMMUNICATION BETWEEN USER EQUIPMENT INSIDE COVERAGE AREA AND USER EQUIPMENT OUTSIDE OF COVERAGE AREA IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME

Application Number:

CN2013864296

Publication Date:

12-08-2015

Current Assignee:

LG

Family ID:

Application Date:

05-12-2013

Declaring Company:

LG

Publication Country:

US

Priority Date:

09-12-2012

Title

METHOD FOR OBTAINING SYNCHRONIZATION FOR DEVICE-TO-DEVICE COMMUNICATION BETWEEN USER EQUIPMENT INSIDE COVERAGE AREA AND USER EQUIPMENT OUTSIDE OF COVERAGE AREA IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR SAME

Application Number:

CN2013864296

Family ID:

Publication Country:

US

Publication Date:

12-08-2015

Application Date:

05-12-2013

Priority Date:

09-12-2012

Current Assignee:

LG

Declaring Company:

LG

Abstract  Abstract

Disclosed in the present invention is a method for a first user equipment inside a coverage area of a base station conducting device-to-device communication with a second user equipment outside the coverage area in a wireless communication system. More specifically the method comprises the steps of: dividing into a plurality of candidate sections a specific time unit for the device-to-device communication; and transmitting a reference signal for obtaining synchronization to the second user equipment from one section from among the candidate sections when a random number that is generated is bigger than or equal to a critical value corresponding to the inside of the coverage area wherein the critical value corresponding to the inside of the coverage area is smaller than a critical value corresponding to the outside of the coverage area.

The invention claims a user device for the second coverage area in a wireless communication system in the first user equipment in the base station and outside the coverage area for device-to-device communication method. More specifically the method comprises the following steps: the specific time unit used for the device to device communication is divided into a plurality of candidate section and when the random number is generated is greater than or equal to the corresponding value in the coverage area transmitting reference signal for obtaining synchronization to the second user device from the selected one segment wherein said critical value corresponding with the interior of the coverage area than an outer threshold value corresponding to the coverage area is small.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.