Ipr Licensing, Inc.

Intel Corporation

Interdigital Technology Corporation

Other

Tantivy Communications, Inc.

Kevin Peter Johnson

George Rodney Nelson, Jr

John B Cornett

John Erich Hoffmann

Kevin L Farley

Pertti Olavi Alapuranen

John A Regnier

Antoine Jean Rouphael

Ana Lucia Iacono

Janet A Stern-Berkowitz

Arty Chandra

Inhyok Cha

Kambiz Casey Zangi

Angelo A Cuffaro

Thomas E Gorsuch

Michael James Lynch

Kai Liu

Carl Wang

James C Otto

Timothy A Axness

Gregg Arthur Charlton

George R Nelson

Lawrence Robert Foore

Antoine J Rouphael, Iii

Ross L Lintelman

Daniel P Steinbach

Stanley Gutowski

A subscriber unit and a method for receiving data at a subscriber unit for wireless communications are provided. A subscriber unit includes a receiver and at least one processor configured to monitor and receive forward control information within a first time interval of a first slot of a plurality of slots. Each slot of the plurality of slots includes the first time interval and a second time interval subsequent to the first time interval. The receiver and the at least one processor are further configured to receive forward traffic data in the first time interval of a second slot of the plurality of slots in accordance with the forward control information, where the second slot is contiguous to the first slot.

Techniques for setting up traffic channels in a communications system

Parallel demodulators are provided in field units. Forward and reverse channel allocation information may be broadcast to the field units in the same epoch as traffic data but on first and second channels, such as paging and traffic channels. This assures that all field units are able to receive forward and reverse channel allocation information every epoch. By having parallel demodulators in the field unit, switching between the first and second channels is avoided and channel allocation information is not lost.

Techniques for reducing overhead in a communications system

An apparatus and method for communication is disclosed. Information is transmitted on a downlink channel in a first time interval. Feedback information regarding the transmitted information is received in a second time interval on an uplink channel. For the second time interval, an explicit allocation of the uplink channel is not transmitted. The second time interval on the uplink channel is a pre-determined time period away from the first time interval on the downlink channel.

Automatic uplink channel assignment

A technique for distributing channel allocation information in a demand access communication system. Multiple access codes are used that have a defined code repeat period or code epoch. For each such epoch duration, a schedule of assignment of traffic channels to active terminals for each epoch is determined. For each terminal designated as active during the epoch, a list of active channels for such terminal unit is assigned. Prior to the start of each epoch, a channel set up message is sent on one of the forward link channels, such as a paging channel, indicating the lists of active channels for epochs of the associated traffic channel(s) that are to follow.

Fast switching of forward link in wireless system

A control channel supporting traffic control in epochs is divided into two control subchannels each being less than or equal to about a half epoch in duration and occurring serially in time. Slot allocation data may be transmitted and received independently over the subchannels. One subchannel may be used for transmitting forward slot allocation data and the other subchannel may be used for transmitting reverse slot allocation data. The channel split into two subchannels may be a paging channel. The forward and reverse slot allocation data may be transmitted between a base station processor and field unit. Forward and reverse traffic data may be staggered by at least about half an epoch. Transmission of traffic data happens within about two epochs after the assignments.

A method and apparatus for communication is disclosed. Information is received on a downlink channel in a first time interval. Feedback information regarding the received information is transmitted in a second time interval on an uplink channel. For the second time interval, an explicit allocation of the uplink channel is not received. The second time interval on the uplink channel is a pre-determined time period away from the first time interval on the downlink channel.

A method and apparatus for communication is disclosed. Information is transmitted on a downlink channel in a time interval. On a condition that an explicit allocation of a first uplink channel is transmitted, feedback information regarding the transmitted information is received on the first uplink channel, wherein the feedback information is received with user data on the first uplink channel. On a condition that an explicit allocation of the first uplink channel is not transmitted, feedback information regarding the transmitted information is received in a time interval on a second uplink channel, wherein an explicit allocation of the second uplink channel is not transmitted, wherein the time interval on the second uplink channel is a pre-determined time period away from the time interval on the downlink channel.

Automatic reverse channel assignment in a two-way TDM communication system

A technique for a time division multiplex system in which access to shared broadcast communication media is granted on a demand basis. Particular connections are assigned slot times at the transmitter based on demand. However, no specific information regarding the assignment of time slots need be communicated to the receivers. The transmit side employs a forward error correction technique followed by multiplication by a cover sequence unique to each connection. All receivers listen to the broadcast transmission channel all of the time. The receiver assigned to each connection decodes the signals in such a manner that only the receiver with the correct cover sequence assigned to a particular connection will successfully decode the data associated with that connection. Data frames that fail the forward error correction process are discarded, and only those frames which are successfully decoded are passed up to a higher layer. The occurrence of an erroneously received frame is not necessarily always reported to the transmit side of the connection; only a packet level error indication is made. In this way, information containing time slot assignment need not be communicated between the transmitter and receiver, and yet data will be correctly received.

Receiver for time division multiplex system without explicit time slot assignment

A method and apparatus for communication is disclosed. Information is received on a downlink channel in a time interval. On a condition that an explicit allocation of a first uplink channel is received, feedback information regarding the received information is transmitted on the first uplink channel, wherein the feedback information is transmitted with user data on the first uplink channel. On a condition that an explicit allocation of the first uplink channel is not received, feedback information regarding the received information is transmitted in a time interval on a second uplink channel, wherein an explicit allocation of the second uplink channel is not received, wherein the time interval on the second uplink channel is a pre-determined time period away from the time interval on the downlink channel.

Growing community of inventors

Palm Bay, FL, United States of America

Kevin Peter Johnson