Patent ID: 7849150
Filing Date: 2010-12-07
Classification: H04L,H04W

Abstract:
1. A communication processing device configured to function as a master in a wireless communication network which comprises a plurality of slaves which communicate through the master and in which each of the plurality of slaves sends an inquiry to acquire address and synchronization information of the master upon setting up the wireless communication network and receives a signal containing the address and synchronization information of the master and each of the plurality of slaves performs a page process by transmitting a page signal containing attribute information, wherein the master and each of the plurality of slaves are synchronized in terms of frequency axis and time axis, the communication processing device comprising: data-receiving means for receiving data from each of the plurality of slaves wherein each of the plurality of slaves is a device constituting the wireless communication network, wherein capabilities of data processing for items of evaluation are set as performance parameters in the data; a processor which performs a process of determining a master aptitude for each of the plurality of slaves based on the performance parameters received from each of the plurality of slaves, a process of ranking each of the plurality of slaves from highest to lowest based on the determined master aptitude, and a process of determining one of the plurality of slaves, which has a master aptitude with the highest ranking, as a candidate slave set to be a backup-master for next master; and data-transmitting means for transmitting backup-master information to each of the plurality of slaves including address information and synchronization information of the backup-master, said synchronization information of the backup-master relating to comprising at least clock information, wherein the at least clock information allows another plurality of slaves to synchronize with the backup master, the address information of the backup-master is determined by the processor, wherein the another plurality of slaves are a set of slaves among the plurality of slaves without the candidate slave, wherein the another plurality of slaves can establish synchronization of a next network by using the backup-master information transmitted from the data-transmitting means, without each of the another plurality of slaves transmitting another inquiry signal to acquire the address of the backup-master and synchronization information of the backup-master, wherein the performance parameters include at least one of data items of remaining battery power, CPU (computer processing unit) performance, memory resource and RSSI (Radio Signal Strength Indicator), i.e., electric-field intensity, all pertaining to each of the plurality slaves, the processor determines the master aptitude by performing an operation in which a weight coefficient is applied to at least one of the performance parameters, and the master performs a process of transmitting a backup-master activation request packet to the backup master, the backup-master activation request packet requesting for activation of the backup-master.