Establishment of a connection between a base station and a mobile station using random access channels

Inactive Publication Date: 2006-11-07
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]Considerable advantages are attained with the solution of the invention. By using the method of the invention, macrodiversity state will be assumed from the beginning of connection establishment. In that case the updating of the

Problems solved by technology

Furthermore, during a packet-mode transmission it is difficult to carry out soft handover the middle of the pa

Method used

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  • Establishment of a connection between a base station and a mobile station using random access channels
  • Establishment of a connection between a base station and a mobile station using random access channels
  • Establishment of a connection between a base station and a mobile station using random access channels

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Example

[0021]In the following, the invention will be explained in more detail by examining its operation in a CDMA cellular radio system without restricting it thereto. The invention is also suitable for use in a time division GSM (Global System for Mobile communication) system and / or SDMA and PRMA systems.

[0022]FIG. 1 illustrates the subscriber terminal equipment of the invention in its essential parts. The subscriber terminal equipment comprises a receiver part A and a transmitter part B. The receiver part A comprises an antenna 10, radio frequency parts 11, an A / D converter 12, a demodulator 13, a signal quality evaluation means 14, selection means 15, a channel decoder 16, a source decoder 17 and a loud speaker 18. The transmitter part B comprises a microphone 20, a source encoder 21, a channel encoder 22, a modulator 23, a D / A converter 24, radio frequency parts 25 and an antenna 26.

[0023]The base station transceiver is in main parts similar to the subscriber terminal equipment withou...

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Abstract

A connection establishment method for establishing a random access type connection using a random access channel, which is used in a radio system having several subscriber terminal equipments (37 to 38) and base stations (33 to 36) where one or more transceiver units (40 to 47) operate, and in which system connection establishment between one of the subscriber terminal equipments (37 to 38) and the base station (33 to 36) is possible when the one subscriber terminal equip nt (37 to 38) is situated in the coverage area of one or more transceiver units (40 to 47) of the base station, where the one subscriber terminal equipment (3 to 38) evaluates the quality of the connections to be established. Starting from a condition in which no connection is established with the one subscriber terminal equipment, the one subscriber terminal equipment (37 to 38) forms a random access type connection to more than one base station transceiver unit (40 to 47) included in one or more base stations (33 to 38).m

Description

[0001]This application is the national phase of international application PCT / F197 / 00064, filed Feb. 4, 1997 which designated the U.S.FIELD OF THE INVENTION[0002]The invention relates to a connection establishment method comprising a random access type connection establishment using a random access channel, which is used in a radio system comprising several subscriber terminal equipments and base stations where one or more transceiver units operate, and in which system the connection establishment between the subscriber terminal equipment and the base station is possible when the subscriber terminal equipment is situated in the coverage area of one or more transceiver units of the base station, in which area the subscriber terminal equipment evaluates the quality of the connections to be established.[0003]The invention further relates to a subscriber terminal equipment which is arranged to establish a random access type connection by using a random access channel in a radio system c...

Claims

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Application Information

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IPC IPC(8): H04B7/00H04Q7/20H04B7/005H04B7/02H04B7/26H04J13/00H04L12/56H04W36/18H04W36/36H04W48/20H04W52/40H04W74/08H04W76/02
CPCH04B7/022H04W36/18H04W36/36H04W48/20H04W52/40H04W74/0833H04W74/0866
Inventor HAKKINEN, HANNUGRANLUND, SEPPOHAMALAINEN, SEPPO
Owner QUALCOMM INC
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