Active queue management for wireless communication network uplink

A technology for transmitting queues and connections, applied in the field of wireless communication networks, and can solve problems such as unavailability

Active Publication Date: 2012-10-17
TELEFON AB LM ERICSSON (PUBL)
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as noted, this proposal was not accepted in 3GPP for LTE Release 8
It will be possible to specify a UE-based uplink AQM mechanism for LTE in Release 9 (or subsequent releases) to achieve better performance, but standardization work will be required and the mechanism will not be available for Release 8 UEs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Active queue management for wireless communication network uplink
  • Active queue management for wireless communication network uplink
  • Active queue management for wireless communication network uplink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Active Queue Management (AQM) maintains high link utilization and low end-to-end latency compared to queue size-based approaches such as PDPC. In addition, AQM is less affected by bandwidth changes. Thus, in the new algorithm proposed in this invention, the delay-based principle is preserved. Advantageously, however, a base station, such as an eNodeB in an LTE network, provides delay-based queue management for user equipment (UE), such as mobile terminals.

[0020] In order to apply this principle in an eNodeB or other wireless communication network base station, the eNodeB should know the queuing delay of packets in the UE buffer. However, the UE queuing delay is not directly known in the eNodeB and needs to be estimated. A general description of the proposed AQM algorithm and supported delay estimation method for one or more embodiments of the invention is disclosed below.

[0021] Latency-based AQM in eNodeB

[0022] In LTE, a Buffer Status Report (BSR) is tran...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

According to the teachings presented herein, a base station implements active queue management (AQM) for uplink transmissions from user equipment (UE), such as a mobile terminal. The base station, e.g., an eNodeB in a Long Term Evolution (LTE) network, uses buffer status reports, for example, to estimate packet delays for packets in the UE's uplink transmit buffer. In one embodiment, a (base station) method of AQM for the uplink includes estimating at least one of a transmit buffer size and a transmit buffer queuing delay for a UE, and selectively dropping or congestion-marking packets received at the base station from the UE. The selective dropping or marking is based on the estimated transmit buffer size and / or the estimated transmit buffer queuing delay.

Description

technical field [0001] The present invention relates generally to wireless communication networks, and more particularly to active queue management (AQM) in such networks. Background technique [0002] LTE is a new radio access network technology that evolved from 3G WCDMA and provides high peak bit rate and high-end QoS. However, the wireless link can still be the bottleneck of the end-to-end connection in many cases. In an overload situation, that is, a situation where the data rate entering the link is greater than the outgoing rate, too much data is temporarily stored in the memory. This memory is often referred to as the transmit buffer or queue. If the overload continues, the data queue will accumulate and grow large. This can cause many problems, such as large end-to-end delays, unfair sharing between different flows, etc. [0003] Also, because the buffer is finite, the queue may eventually exceed the physical limit and some data will have to be discarded. The s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/10H04L12/56H04L29/06H04L47/30H04L47/31H04L47/32
CPCH04L47/12H04L69/16H04L47/30H04L69/163H04L47/32H04L47/10H04L47/14H04L47/31H04W80/06H04W28/12H04W28/0247H04W28/0278H04W8/04
Inventor Y·谭R·苏西塔伊瓦尔J·托斯纳
Owner TELEFON AB LM ERICSSON (PUBL)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap