Pattern generating device, pattern generating method, and wireless communication system

Inventors

Ozaki, Norimasa • Kuwahara, Toshiaki

Assignees

SMC Corp

Abstract

A pattern generating device includes a random number generating unit configured to generate a plurality of random numbers using a unique number assigned to a base wireless device as a seed, an associating unit configured to associate each of the different random numbers with a frequency of each channel, and a pattern generating unit configured to generate a change pattern by determining order of the plurality of random numbers based on numerical values represented by the respective random numbers, and by arranging the frequencies corresponding to the random numbers in same order as the order of the random numbers.

Core Innovation

The patent describes a wireless communication system in which a base wireless device and at least one remote wireless device communicate with each other while changing the frequency. A pattern generating device generates a change pattern of a frequency used in the wireless communication system, and includes a random number generating unit, an associating unit, and a pattern generating unit.

The random number generating unit generates a plurality of random numbers using a unique number assigned to the base wireless device as a seed. The associating unit associates each of the different random numbers with the frequency of each channel, and the pattern generating unit generates the change pattern by determining the order of the plurality of random numbers based on numerical values represented by the respective random numbers and arranging the frequencies corresponding to the random numbers in the same order.

The disclosed approach is further refined by frequency sorting and grouping schemes in which the random numbers are partitioned into multiple groups and selected for generating the change pattern. In one embodiment, multiple groups are used and a predetermined nth random number is selected per group and reordered for arranging the corresponding frequencies. In another embodiment, two groups are used and random numbers are selected one by one alternately from the two groups while maintaining the same order based on numerical values represented by the random numbers.

Claims Coverage

The independent claims cover a pattern generating device, a pattern generating method, and a wireless communication system using a base-to-remote and remote-to-base frequency change based on a generated change pattern. Across the independent claims, there are three inventive-feature groupings: seeded random number generation, association of random numbers with channel frequencies, and generating a change pattern by ordering random numbers by their numerical values to arrange the corresponding frequencies in the same order.

The independent claims collectively require generating a change pattern from a sequence of random numbers seeded by a unique number assigned to the base wireless device, associating the random numbers to channel frequencies, and ordering the random numbers by their numerical values to arrange the corresponding frequencies in the same order. The wireless communication system further applies the generated change pattern to frequency changes for both base-to-remote and remote-to-base radio-wave communications.

Stated Advantages

Documented Applications