Title:
ALLOCATION OF CARRIER WAVE FREQUENCY IN SDMA RADIO SYSTEM
Document Type and Number:
Japanese Patent JPH08265837
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable a carrier wave frequency to be simply and surely assigned by making a system constructed so that the carrier wave frequency is given to a remote station, only when a direction in a space is different more than a stereoscopic angle and a radio signal gives in a base station receiving level within the range of predetermined level. SOLUTION: A base station BTS is provided with an antenna array A of a group antenna phase controlled and a transceiver TRX which is a radio sub-assembly connected to the antenna array formed as an SDMA radio transceiver. These components are used for the SDMA radio transmission between the base station BTS and mobile stations MS1 to MS3 positions in a radio cell. And only when a direction in the space is different more than the predetermined stereoscopic angle and a radio signal gives in the base station BTS a receiving level within the range of predetermined level, the carrier wave frequency is assigned to a remote station. The predetermined stereoscopic angle is, for instance, selected to the beam width of the antenna array A.
Inventors:
MIHIYAERU TANGEMAN
KORUNERISU HOETSUKU
HAINTSU SHIYUREJINGAA
KORUNERISU HOETSUKU
HAINTSU SHIYUREJINGAA
Application Number:
JP3849196A
Publication Date:
October 11, 1996
Filing Date:
February 26, 1996
Export Citation:
Assignee:
ALCATEL NV
International Classes:
H04B7/10; H04B7/26; H04Q7/36; H04W16/28; (IPC1-7): H04Q7/36; H04Q7/34; H04Q7/28; H04Q7/22
Attorney, Agent or Firm:
Takehiko Suzue