Fast switching of forward link in wireless system

专利名称：Fast switching of forward link in wireless

system

发明人：Pertti Olavi Alapuranen,Kevin P.

Johnson,Kevin L. Farley

申请号：US09847860申请日：20010502

公开号：US20020163894A1公开日：20021107

专利附图：

摘要：A technique for distributing channel allocation information in a demand accesscommunication system. In a preferred embodiment, for use with Code Division Multiple

Access (CDMA) type communication, multiple access codes are used that have a definedcode repeat period or code epoch. For each such epoch duration, a central controller,such as located at a base station in the case of operating a forward link, determines aschedule of assignment of traffic channels to active terminals for each epoch. For eachterminal designated as active during the epoch, an active terminal unit identifier isassigned. For each terminal designated as active during the epoch, the base stationassigns a list of active channels for such terminal unit. Prior to the start of each epoch, achannel set up message is sent on one of the forward link channels, such as a pagingchannel. The channel set up message indicates the terminal unit identifiers and the lists ofactive channels for epochs of the associated traffic channel(s) that are to follow. At theremote terminal unit, upon receiving a paging channel message, an active terminalidentifier is determined from each paging channel message and compared to a previouslyassigned terminal identifier. On a predetermined subsequent epoch, the indicated activetraffic channel, as indicated from the list of active traffic channels indicated by a receivedpaging channel message, are then processed.

申请人：TANTIVY COMMUNICATIONS, INC.

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