Scheduling voice-over-IP users in wireless systems using carrier aggregation

A carrier aggregation and secondary carrier technology, applied in transmission systems, wireless communications, digital transmission systems, etc., and can solve the problems of inability to decode downlink data, not receiving downlink assignments, and inability to determine UE.

Inactive Publication Date: 2017-09-26
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] figure 1 The table reproduced in , shows that in many cases the base station receiving the HARQ feedback ("eNodeB" or "eNB" in LTE terminology) cannot determine whethe...

Method used

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  • Scheduling voice-over-IP users in wireless systems using carrier aggregation
  • Scheduling voice-over-IP users in wireless systems using carrier aggregation
  • Scheduling voice-over-IP users in wireless systems using carrier aggregation

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Embodiment Construction

[0044] The inventive concept will be described more fully hereinafter with reference to the accompanying drawings, in which examples of embodiments of the inventive concept are shown. These inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. It should also be noted that these embodiments are not mutually exclusive. Components from one embodiment may be present in or used in another embodiment by default.

[0045] For purposes of illustration and explanation only, these and other embodiments of the inventive concept are described herein in the context of a radio access network communicating with mobile terminals (also referred to as terminal devices, wireless terminals or UEs) over radio communication channel...

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Abstract

Scheduling of delay-sensitive downlink traffic in a downlink carrier aggregation scenario is performed in such a way as to take advantage of the unambiguous HARQ feedback that is available when the downlink assignment is transmitted coincident with an uplink TDD subframe on the secondary carrier. An example method, in a wireless network node supporting downlink carrier aggregation of a primary carrier in Frequency-Division Duplexing, FDD, mode and a secondary carrier in Time-Division Duplexing, TDD, mode, includes determining (710) that a first user device supported or to be supported with said downlink carrier aggregation has delay-sensitive downlink traffic. Subsequent scheduling of the first user device's delay-sensitive downlink traffic is prioritized (720) in transmission-time intervals, TTIs, in which the subframe of the secondary carrier is an uplink subframe. The delay-sensitive downlink traffic may be voice-over-Internet-Protocol, VoIP, traffic, for example.

Description

technical field [0001] The techniques disclosed herein relate generally to wireless telecommunications networks, and more specifically to techniques for supporting downlink carrier aggregation and delay sensitive downlink traffic in such networks. Background technique [0002] carrier aggregation [0003] Carrier aggregation is one of the features recently developed by members of the 3rd Generation Partnership Project (3GPP) for the so-called Long Term Evolution (LTE) system, formally known as the Enhanced Universal Terrestrial Radio Access Network (E-UTRAN), and Part of being standardized as LTE Release 10, also known as LTE-Advanced. [0004] Release 8, an earlier version of the LTE standard, supports transmission bandwidths of up to 20 MHz. However, the ultra-high data rates expected for LTE-Advanced will require extended transmission bandwidth. Therefore, by utilizing carrier aggregation, bandwidths up to 100 MHz are supported in LTE-Advanced. In order to maintain b...

Claims

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Application Information

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IPC IPC(8): H04L5/00
CPCH04L5/001H04L5/0044H04L5/0064H04L1/1887H04L1/1845H04W72/566H04L5/0032H04L5/14H04W72/0446H04W72/1215
Inventor A.瑙亚A.米扎伊
Owner TELEFON AB LM ERICSSON (PUBL)
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