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Time scheduling with stop-and-wait arq process

An automatic retransmission request, stop-and-wait technique for error prevention/detection using return channels, digital transmission systems, electrical components, etc.

Inactive Publication Date: 2005-02-02
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Moreover, rate scheduling needs to set a bound when determining the maximum transmit power per mobile station considering all mobile stations transmitting simultaneously

Method used

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  • Time scheduling with stop-and-wait arq process
  • Time scheduling with stop-and-wait arq process
  • Time scheduling with stop-and-wait arq process

Examples

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Embodiment Construction

[0037] figure 1 Shows part of the cellular network.

[0038] It is assumed that the cellular network is in accordance with the UMTS (Universal Mobile Telecommunications System) standard defined by 3GPP. This standard applies a WCDMA modulation scheme.

[0039] Each cell includes a base station 11 . Each base station is adapted to communicate with mobile stations 12, 13 within the cell containing the base station, and with mobile stations 14 in soft handover regions of neighboring cells.

[0040] The respective base stations are interconnected by a physical network 20 .

[0041] A Radio Network Controller 22 (RNC) is connected to the base stations via the network 20 . The Radio Network Controller hosts Radio Resource Management (RRM) algorithms. In particular, it is adapted to control the UMTS Terrestrial Radio Access Network (UTRAN).

[0042] Uplink transmission is the transmission performed from the mobile station to the base station. A downlink transmission is a trans...

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PUM

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Abstract

The process for sending sets of data on a uplink dedicated transport channel made of successive sub-frames from a mobile station to a base station of wireless communication network, said process including: implementing a SAW ARQ process in which each set of data to be transmitted is split into packets which are transmitted in following sub-frames and a next packet is transmitted only when a response for the previous packet is received by the mobile station. It includes: defining several SAW channels, made of a sub-set of sub-frames regularly time spaced in the uplink dedicated transport channel; for each set of data, assigning a primary channel to said set of data, and sending the packets of said set of data in the sub-frames of said assigned primary channel by implementing a SAW ARQ process in the primary channel.

Description

technical field [0001] The invention relates to a method of transmitting a data set on an uplink dedicated transport channel consisting of consecutive subframes from a mobile station to a base station of a wireless communication network. Background technique [0002] In a wireless communication system, data is transmitted from a mobile station to a base station through an uplink dedicated transport channel (DCH). [0003] In the UMTS standard, 3GPP (Third Generation Partnership Project) is studying how to enhance the dedicated transport channel of the uplink. The results and assumptions of the research have been disclosed in the technical report TR25.896 text 0.3.0 "Uplink Enhancement of Dedicated Transport Channel". [0004] As the use of IP-based services becomes more important, there is an increasing need to improve coverage and throughput while reducing delay in the uplink. Applications that benefit from the enhanced uplink could include services like video clipping, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04L1/00H04L1/18
CPCH04L1/1803H04L2001/0096H04L1/0083H04L1/1887
Inventor 福井范行
Owner MITSUBISHI ELECTRIC CORP
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