Patent ID: 8942160
Filing Date: 2015-01-27
Classification: H04L,H04W

Abstract:
1. A communication apparatus in a communication system comprised of a plurality of communication apparatuses, the communication apparatus comprising: a first determination unit configured to determine one or more first communication apparatuses within a shadow area of a second communication apparatus using a first radio wave multiplex type, wherein the shadow area is a low link quality area; a second determination unit configured to determine a third communication apparatus to transmit data to the one or more first communication apparatuses by data transmission using a second radio wave multiplex type different from the first radio wave multiplex type, wherein the second determination unit determines the third communication apparatus that has link qualities with the one or more first communication apparatuses being equal to or higher than a threshold, and wherein the second communication apparatus and the third communication apparatus concurrently transmit data using the first radio wave multiplex type and the second radio wave multiplex type, respectively; wherein the link qualities are based on a received signal intensity, a bit error rate, or a frame error rate detected at each communication apparatus when the multiple data transmissions have been performed using two different radio wave multiplex types orthogonal to each other.