The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 2006
Filed:
Jan. 21, 2003
Athanasios A. Kasapi, San Francisco, CA (US);
Adam B. Kerr, Menlo Park, CA (US);
Xiaoming Yu, Cupertino, CA (US);
Lars Johan Persson, Stockholm, SE;
Athanasios A. Kasapi, San Francisco, CA (US);
Adam B. Kerr, Menlo Park, CA (US);
Xiaoming Yu, Cupertino, CA (US);
Lars Johan Persson, Stockholm, SE;
Arraycomm, LLC, San Jose, CA (US);
Abstract
An embodiment of the invention provides a method for effecting switchback on a spatial division multiple access (SDMA) PHS channel. A communication signal is broadcast over each of one or more SDMA channels of a multi-access channel to one or more corresponding user terminals. A set of transmit spatial weights is determined for a synchronization burst to a user terminal attempting to reestablish communication over an SDMA channel of the multi-access channel. The set of transmit spatial weights is determined such that interference caused by one or more communication signals to the synchronization burst is reduced.