Patent ID: 9503348
Filing Date: 2016-11-22
CPC Classification: H04L

Claim Text:
1. An operating method of a control point device, comprising: setting, by the control point device, a Maximum time for waits (MX) value for device discovery; transmitting, by the control point device, a Method for Search Request (M-SEARCH) message comprising the set MX value to at least one device connected with the control point device; and receiving, by the control point device, a response message in response to the M-SEARCH message from the at least one device, wherein the response message indicates a connection status of each device and is received from the at least one device within a certain time in a range of the set MX value; and wherein said setting the MX value for the device discovery comprises: determining, by the control point device, whether a current device discovery is an initial device discovery, and upon a determination that the current device discovery is the initial device discovery, setting the MX value to a first set value, and upon a determination that the current device discovery is not the initial device discovery, comparing a difference between an execution time of the current device discovery and an execution time of a last device discovery with a sum of a pre-stored MX value and a predetermined time, and when the difference is smaller than the sum, setting the MX value to the first set value, and when the difference is greater than or equal to the sum, setting the MX value to a second set value that is smaller than the first set value, and wherein the execution time indicates from a transmission time of the M-SEARCH message to a reception time of a last response message for the M-SEARCH message.