US 7953411

Here's a concise summary of US Patent 7953411:

Title: Virtual soft hand over in OFDM and OFDMA wireless communication network

Assignee: Integral Wireless Technologies LLC (Current Assignee)

• Original Assignee: ZTE USA Inc

Inventor: Mary Chion

Filing Date: June 9, 2005

Issue Date: May 31, 2011

Abstract:
The patent describes efficient handover mechanisms for OFDM and OFDMA wireless communication systems. It involves operating a mobile subscriber station (MSS) to transmit and receive a frame with only one base station while continuously monitoring communications with adjacent base stations.

Plain-Language Overview of Independent Claims:

• Independent Claim 1: This claim describes a method for a mobile subscriber station (MSS) to perform a handover in a wireless network. The method involves the MSS, currently serviced by one base station (the "current base station"), monitoring air interface messages from several adjacent base stations. The MSS transmits and receives data only with the current base station during allocated bursts within each single frame, even while continuously monitoring other base stations. The MSS then identifies a "preferred base station" from the monitored stations based on these messages (specifically, carrier to interference plus noise ratio (CINR) values). Upon the MSS requesting a handover to this preferred base station, the network changes the serving base station from the current one to the preferred one. This change involves the MSS sending a signal identifying the preferred base station, stopping communication with the current base station, and then beginning data exchange with the preferred base station in a subsequent frame.

• Independent Claim 10: This claim also describes a method for an MSS handover in a wireless network. It focuses on the MSS maintaining an "active set" of potential transmitting base stations, but only communicating with one "current transmitting base station" per single frame. The MSS monitors all base stations in this active set while actively sending and receiving data with the current transmitting base station. Based on this monitoring, the MSS determines a "preferred transmitting base station" and informs the current transmitting base station about this preference via a fast feedback channel. Subsequently, the MSS stops communicating with the current transmitting base station and begins exchanging data with the preferred base station in a following frame.

CAFC 2026 Dockets:
As of April 26, 2026, a search of CAFC 2026 dockets for US patent 7953411 did not yield any specific results directly mentioning this patent number. The search results provided general information about scheduled cases and patent-related rulings in the Federal Circuit during 2026 but did not list any active litigation or docket entries for US7953411.