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A method and a device for improved retransmissions

A user equipment, retransmission technology, applied in non-redundancy-based fault handling, using return channels for error prevention/detection, transmission systems, etc., can solve problems such as difficult to obtain timers, expensive timers, and transmission delays

Pending Publication Date: 2009-12-09
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Using timers for retransmissions is quite expensive due to the need to maintain and control all the timers
In addition, since retransmissions may be delayed not only due to transmission errors, but also due to multi-user scheduling, it is difficult to obtain the correct value of the timer

Method used

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  • A method and a device for improved retransmissions

Examples

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Embodiment Construction

[0022] figure 1 A system 100 in which the present invention may be applied is schematically shown. System 100 is a cellular access system, and thus includes a plurality of cells, one of which is at figure 1 is shown with reference numeral 110 .

[0023] The cell 110 comprises at least one radio base station RBS, such as figure 1 Shown in 120. In particular, RBS 120 is used to control traffic to and from users in cell 110 . Cell 110 can accommodate at least one user terminal, figure 1 Two user terminals referenced 130 and 140 are shown in .

[0024] System 100 is shown as a cellular telephone system, and the invention will be described with reference to such a system, but it should be noted that this is by way of example only and that the invention is applicable to a number of different wireless access systems.

[0025] In addition, terms used when describing the present invention with reference to the system 100 are only used to help readers understand the present invent...

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PUM

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Abstract

The invention discloses a method (200) for use in a cellular system (100) with an RBS (120) which controls traffic to and from a cell (110), with one User Equipment, UE (130, 140), in the cell. The RBS and the UE receive and transmit information between each other, one of them being a sending party and the other one is a receiving party, and errors in messages (BSN 1, BSN 4) which are received can be detected by the receiving party by a first error detection method and if errors are detected in received messages, the re not ceiving party can request a retransmission from the transmitting party. The receiving party stores the order in which retransmissions are requested, so that erroneous retransmissions may be detected by the receiving party with not out the first error detection method.

Description

technical field [0001] The present invention discloses a method for use in a cellular access system in which there may be at least one radio base station controlling traffic to and from cells in the system and in which there may be at least one user with User of the device UE. [0002] The RBS and UE can receive and transmit information between each other such that one of them is a sender and the other is a receiver, and an error in a received message can be detected using an error detection method. If an error is detected in a received message, the receiver can request the sender to retransmit the message in which the error was detected. Background technique [0003] In a cellular access system, such as a cellular telephone system, there is at least one cell in which there are one or more users, each user having a user equipment UE with which the user can communicate with the system. The system will also comprise at least one radio base station RBS, in particular for cont...

Claims

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Application Information

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IPC IPC(8): H04L1/18
CPCH04L1/007H04L1/1642H04L1/1829H04L1/08G06F11/0709G06F11/0751G06F11/079
Inventor Y·廷纳H·阿克塞尔森
Owner TELEFON AB LM ERICSSON (PUBL)
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