Patent ID: 7715841
Filing Date: 2010-05-11
Classification: H04W

Abstract:
1. A radio communication system, comprising: a base station of a first radio communication system; a base station of a second radio communication system including a cell being in close proximity to or overlapping a cell for communications by the base station of the first radio communication system, and operating asynchronous to the base station of the first radio communication system; and a mobile station capable of communications with both the first and second radio communication systems, wherein the mobile station includes: a radio section that receives a radio wave from each of the first and second radio communication systems; and a system information estimation section that scans a plurality of radio frequencies to determine a frequency of the radio wave received from the second radio communication system, determines a communication mode of the second radio communication system based on the determined frequency, and transmits the determined communication mode as system estimation information to the base station in the first radio communication system, the base station of the first radio communication system includes: a storage section that stores the system estimation information provided by the mobile station, and wherein the base station of the first radio communication system transmits the system estimation information to the mobile station in the cell, and the mobile station switches from the first radio communication system to the second radio communication system based on the system estimation information.