Method of controlling the operation of a packet switched CDMA communication network for controlling the operation of transmitters and receivers

Patent 5257257 Issued on October 26, 1993. Estimated Expiration Date:

April 3, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Nokia Mobiltelefoner AB

Application

No. 863026 filed on 04/03/1992

US Classes:

370/441, Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA)370/203, GENERALIZED ORTHOGONAL OR SPECIAL MATHEMATICAL TECHNIQUES370/389Switching a message which includes an address header

Examiners

Primary: Olms, Douglas W.
Assistant: Patel, Ajit

Attorney, Agent or Firm

Cushman, Darby & Cushman

International Classes

H04J 013/00
H04J 011/00
H04J 003/02

Foreign Application Priority Data

1991-04-05 FI

Abstract

A method of controlling the operation of a packet switched CDMA telecommunication network for controlling the operation of transmitters and receivers. The terminals of network users (Ui,j) communicate with other terminals (Uj,i) via a CDMA channel, and the terminal of each user is assigned a receiver code (ri,j) and a transmitter code (ti,j) used by the terminals for encoding packets to the other terminals of the network. To improve the performance of the network, the terminals sense the channel for the presence of the receiver codes (ri,j) and/or the transmitter codes (ti,j) at the different stages of the connection establishment, and the transmitting terminal (TERi) transmits encoded request packets (REQ) and data packets (DAT) to the channel on the basis of the sensing procedure, and the other communicating party, i.e. the receiving terminal (TERj), receives said encoded packets and transmits encoded acknowledgement packets (ACK) and busy tone packets to the channel.