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Determining timing of feedback information in wireless networks realised in different technologies

A technique of timing, technical systems, applied in the direction of wireless communication, error prevention/detection using return channel, electrical components, etc., can solve problems such as not providing HSPA

Active Publication Date: 2013-11-27
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is still not possible to allocate e.g. only 5 MHz to LTE clients in order to provide a decent bit rate on the LTE carrier, since LTE evolution would then not provide competitive performance with respect to HSPA

Method used

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  • Determining timing of feedback information in wireless networks realised in different technologies
  • Determining timing of feedback information in wireless networks realised in different technologies
  • Determining timing of feedback information in wireless networks realised in different technologies

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Embodiment Construction

[0053] For purposes of illustration rather than limitation, specific details such as specific architectures, interfaces, technologies, etc. are set forth in the following description in order to provide a thorough understanding. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the understanding of this description with unnecessary detail. The same reference numbers designate the same or similar elements throughout the description.

[0054] 3GPP is responsible for the development and maintenance of GSM / GPRS, WCDMA / HSPA and LTE standards. In this disclosure, the main focus is on the evolution of HSPA built on WCDMA radio access (also known as Universal Terrestrial Radio Access Network (UTRAN)) and LTE, which is based on OFDM and SC-FDMA and is also considered the long-term successor of UTRAN. Evolved or Evolved UTRAN (E-UTRAN). The detailed UTRAN radio access specifications are described in the 25 series of...

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Abstract

The invention relates to a method in a user equipment 4 for determination of timing of a Hybrid Automatic Repeat re-Request, HARQ, response. The user equipment 4 operates in a communication network 1 comprising a primary radio access technology system 2and a secondary radio access technology system 3. The user equipment 4 receives on at least one downlink carrier on the first radio access technology system 2 and on at least one downlink carrier on the second radio access technology system 3. The method comprises determining a downlink timing related to the secondary radio access technology system 3; determining a virtual uplink timing for HARQ response on the secondary radio access technology system 3 based on the downlink timing; determining an uplink timing related to the primary radio access technology system 2; and determining, based on the virtual uplink timing and the uplink timing for the primary radio access technology system 2, an uplink time instance for transmission of the HARQ response on an uplink carrier of the primary radio access technology system 2, wherein the HARQ response relates to data received on the downlink carrier on the secondary radio access technology system 3. The invention also relates to user equipment, radio base stations and methods therein.

Description

technical field [0001] The technology disclosed herein relates generally to the field of wireless communication systems, and in particular to the timing of feedback information in wireless communication systems using multiple radio access technologies. Background technique [0002] Today, many radio / wireless and cellular access technologies and standards exist, such as GSM / GPRS (Global System for Mobile Communications / General Packet Radio Service), WCDMA / HSPA (Wideband Code Division Multiple Access / High Speed ​​Packet Access), CDMA-based technology, WiFi (Wireless Fidelity), WiMAX (Worldwide Interoperability for Microwave Access) and most recently LTE (Long Term Evolution), to name a few. Technologies and standards have been developed over the past few decades, and this development can be expected to continue. Specifications are developed in organizations such as 3GPP, 3GPP2, and IEEE. [0003] Various frequency bands are usually allocated and / or sold by governmental organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/18H04W72/04
Inventor B.林德多夫S.帕克瓦尔M.塞格福斯
Owner TELEFON AB LM ERICSSON (PUBL)