Patent ID: 8510421
Filing Date: 2013-08-13
Classification: G06F,H04L

Abstract:
1. A server comprising: a memory storing a program; and a processor operable to execute the program, wherein the processor, when executing the program, operates as: wherein the registration processing unit, (a) when registering the unregistered terminal apparatus in the registration unit, sets a validity period of the registration of the unregistered terminal apparatus being registered, (b) when receiving the registration request from the registered terminal apparatus within the set validity period, causes the packet transmission unit to transmit the measuring packet to the registered terminal apparatus, (c) when the measured value is smaller than another reference measurement value, performs extension processing to extend the set validity period, and (d) when the measured value is larger than or equal to the other reference measurement value, causes the packet transmission unit to newly transmit the measuring packet to the registered terminal apparatus and performs the extension processing to extend the set validity period when the measured value for the newly transmitted measuring packet is smaller than the other reference measurement value.