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:
Nov. 06, 2012
Filed:
Mar. 06, 2008
Daniele Tortora, Sesto s. Giovanni, IT;
Daniele Tortora, Sesto s. Giovanni, IT;
Nokia Siemens Networks GmbH & Co. KG, Munich, DE;
Abstract
A method for improving distributed resource allocation in OFDMA based wireless communication networks such as WiMAX IEEE 802.16 for either fixed or mobile subscriber stations SSs is executed by neighbor Base Stations BSs serving the SSs. Each BS controls the allocation of respective permutation zones and radio resources encompassing different radio subchannels within each permutation zone. In this task the BS avails of RRM primitives and instances of a NCMS functionality promoting direct BS-to-BS communication, which can be exploited in a distributed RRM profile. A BS playing the role of RRC sends to Neighbor BSs a unique RRM Request for receiving event-driven Spare Capacity Reports. Among driving events, 'Change of Radio Resources Allocation' is included. Neighbor BSs, at every allocation change is detected, send to the requester BS a Spare Capacity Report including a Bitmap indicating subchannels used for transmission in each Permutation Zone. In order to eliminate Co-Channel Interference CCI, the requester BS avoids using same subchannels already indicated in the received Bitmap.