# US 10,484,936 B2 · Discovery signal transmission/reception method and apparatus for use in mobile communication system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,936 B2 - Document ID: US10484936B2 - Status: Granted - Kind: B2 - Application number: 16/207,645 - Filed: 2018-12-03 - Published: 2019-04-04 - Granted: 2019-11-19 - Earliest claimed: 2012-12-14 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Youngbum Kim; Joonyoung Cho; Yongjun Kwak; Juho Lee; Hyojin Lee; Hyoungju Ji; Younsun Kim; Sangmin Ro; Seunghoon Choi - Web page: https://patentgrep.com/patent/US10484936B2 ## CPC - H04W 48/16: Discovering, processing access restriction or access information - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 56/00: Synchronisation arrangements - H04W 56/001: {Synchronization between nodes} - H04W 56/0015: {one node acting as a reference for the others} - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A discovery signal transmission/reception method and an apparatus for improving energy efficiency of the system are provided. The discovery signal transmission method of a base station in a mobile communication system according to the present disclosure includes acquiring a discovery signal configuration of a neighbor cell, transmitting the discovery signal configuration to a terminal, receiving a measurement report including a result of measurement on a discovery signal of the neighbor from the terminal, the measurement being performed based on the discovery signal configuration, and determining whether to make a handover decision for the terminal based on the measurement report. The discovery signal transmission/reception method of the present disclosure is advantageous in improving energy efficiency of a mobile communication system. ## Claims ### Claim 1 A method of a terminal in a mobile communication system, the method comprising: receiving, from a base station, a configuration message for a synchronization signal transmitted from a neighbor cell; measuring the synchronization signal transmitted from the neighbor cell based on the configuration message; and transmitting, to the base station, a measurement report including a measurement result on the synchronization signal, wherein the configuration message includes information on a signal transmission timing indicating a transmission period and a timing offset of the synchronization signal. ### Claim 2 (depends on 1) The method of claim 1, wherein the synchronization signal is transmitted on a radio frame of system frame number n, and wherein a first value based on modular operation with the system frame number n and the transmission period corresponds to a second value indicated by the timing offset. ### Claim 3 (depends on 1) The method of claim 1, wherein a reference timing for the timing offset is a serving cell timing of the base station. ### Claim 4 (depends on 1) The method of claim 1, wherein the transmission period includes at least one of a period of 10 ms, 20 ms, 40 ms, 80 ms, or 160 ms. ### Claim 5 A method of a base station in a mobile communication system, the method comprising: identifying configuration information of a synchronization signal of a neighbor cell; transmitting, to a terminal, a configuration message including the configuration information; receiving, from the terminal, a measurement report including a measurement result of the synchronization signal transmitted from the neighbor cell according to the configuration information; wherein the configuration information includes information on a signal transmission timing indicating a transmission period and a timing offset of the synchronization signal. ### Claim 6 (depends on 5) The method of claim 5, wherein the synchronization signal is transmitted on a radio frame of system frame number n, and wherein a first value based on modular operation with the system frame number n and the transmission period corresponds to a second value indicated by the timing offset. ### Claim 7 (depends on 5) The method of claim 5, wherein a reference timing for the timing offset is a serving cell timing of the base station. ### Claim 8 (depends on 5) The method of claim 5, wherein the transmission period includes at least one of a period of 10 ms, 20 ms, 40 ms, 80 ms, or 160 ms. ### Claim 9 A terminal in a mobile communication system, the terminal comprising: a transceiver; and a controller configured to: control the transceiver to receive, from the base station, a configuration message for a synchronization signal transmitted from a neighbor cell, measure the synchronization signal transmitted from the neighbor cell based on the configuration message, and control the transceiver to transmit, to the base station, a measurement report including a measurement result of the synchronization signal, wherein the configuration message includes information on a signal transmission timing indicating a transmission period and a timing offset of the synchronization signal. ### Claim 10 (depends on 9) The terminal of claim 9, wherein the synchronization signal is transmitted on a radio frame of system frame number n, and wherein a first value based on modular operation with the system frame number n and the transmission period corresponds to a second value indicated by the timing offset. ### Claim 11 (depends on 9) The terminal of claim 9, wherein a reference timing for the timing offset is a serving cell timing of the base station. ### Claim 12 (depends on 9) The terminal of claim 9, wherein the transmission period includes at least one of a period of 10 ms, 20 ms, 40 ms, 80 ms, or 160 ms. ### Claim 13 A base station in a mobile communication system, the base station comprising: a transceiver; and a controller configured to control to: identify configuration information of a synchronization signal of a neighbor cell, control the transceiver to transmit, to the terminal, a configuration message including the configuration information, and control the transceiver to receive, from the terminal, a measurement report including a measurement result of the synchronization signal transmitted from the neighbor cell according to the configuration information, wherein the configuration information includes information on a signal transmission timing indicating a transmission period and a timing offset of the synchronization signal. ### Claim 14 (depends on 13) The base station of claim 13, wherein the synchronization signal is transmitted on a radio frame of system frame number n, and wherein a first value based on modular operation with the system frame number n and the transmission period corresponds to a second value indicated by the timing offset. ### Claim 15 (depends on 13) The base station of claim 13, wherein a reference timing for the timing offset is a serving cell timing of the base station. ### Claim 16 (depends on 13) The base station of claim 13, wherein the transmission period includes at least one of a period of 10 ms, 20 ms, 40 ms, 80 ms, or 160 ms.