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Methods and arrangements in a wireless communications system

A wireless communication system and radio base station technology, applied in the field of wireless communication, can solve the problems of excessive retransmission, increased delay, high cost, etc., achieve the best coverage, reduce the number of retransmissions, and reduce costs

Inactive Publication Date: 2011-02-09
TELEFON AB LM ERICSSON (PUBL)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although autonomous HARQ retransmissions can alleviate the above coverage problem to some extent, when the UE is in a favorable situation in the cell, the fixed number of autonomous retransmissions will lead to an excessive number of retransmissions in some cases
In general, an excessive number of HARQ retransmissions is a disadvantage, because the requirements on receiver resources become high on the network side, which translates into high cost
If a certain amount of UEs are always performing a large number of HARQ retransmissions, the cost of the provided service becomes high
Numerous HARQ retransmissions also increase latency, which is undesirable for real-time services such as voice
On the other hand, a fixed number of autonomous retransmissions will sometimes not be sufficient to obtain correctly received data packets, and thus some additional transmissions will be required
This also increases the latency

Method used

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  • Methods and arrangements in a wireless communications system
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  • Methods and arrangements in a wireless communications system

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Embodiment Construction

[0023] In the following, the invention will be described in more detail with reference to certain embodiments and drawings. For purposes of explanation and not limitation, specific details are set forth, such as particular situations, techniques, etc., in order to provide a thorough understanding of the present invention. However, it will be understood by those skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.

[0024] In addition, those skilled in the art will understand that the functions and components explained herein below can be implemented using software functioning in conjunction with a programmed microprocessor or general purpose computer and / or using application specific integrated circuits (ASICs). It will also be appreciated that while the invention has been primarily described in terms of methods and apparatus, the invention can also be implemented in a computer program product and in a sys...

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Abstract

The present invention relates to methods and arrangements that enable continuous adaptive control of the number of autonomous HARQ retransmissions. This is achieved by a solution, where the UE and the radio base station are using a number of autonomous HARQ retransmissions that can be adjusted based on observations in the UE and / or the radio base station. What is observed is the amount of HARQ retransmissions needed for the radio base station to correctly decode the latest received data packet(s).

Description

technical field [0001] The present invention relates to the field of wireless communications, and in particular, to autonomous HARQ retransmissions for wireless communications networks. Background technique [0002] The Universal Mobile Telecommunications System (UMTS), also known as a third generation (3G) system or Wideband Code Division Multiple Access (WCDMA) system, is designed to succeed GSM. The UMTS Terrestrial Radio Access Network (UTRAN) is the radio access network of the UMTS system. In UTRAN architecture, such as figure 1 As shown, a User Equipment (UE) 150 of a particular cell 110 is wirelessly connected to a NodeB (NB) 130 which in turn is connected to a Radio Network Controller (RNC) 100 . [0003] The evolution of UTRAN and other radio interface standards has focused heavily on packet access technologies to support packet data services such as VoIP, where the main principle is that small data units or packets carry data over the communication medium, and ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04W36/00H04L1/08
CPCH04L1/0009H04L1/1825H04L1/1812H04L1/08H04L1/189
Inventor D·格斯坦伯格J·伯格曼K-E·苏内尔
Owner TELEFON AB LM ERICSSON (PUBL)
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