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Efficient flow control in a radio network controller (RNC)

A wireless network and wireless link control technology, applied in the field of efficient flow control, can solve the problem of high cost of Iub transmission link

Inactive Publication Date: 2012-10-10
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, however, increased Uu interface capacity does not always coincide with similarly increased Iub TN capacity
The cost of the Iub transmission link is still high and is not expected to decrease significantly

Method used

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  • Efficient flow control in a radio network controller (RNC)
  • Efficient flow control in a radio network controller (RNC)
  • Efficient flow control in a radio network controller (RNC)

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Embodiment Construction

[0031] In the following description, for purposes of illustration rather than limitation, specific details are set forth, such as specific architectures, interfaces, techniques, etc., in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. That is to say, various configurations will occur to those skilled in the art which, although not explicitly described or shown herein, embody the principles of the invention and are included within its spirit and scope.

[0032] In some instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail. All statements herein reciting principles, aspects, and embodiments of the invention, as well as specific examples thereof, are intended to encompass both stru...

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Abstract

A mechanism is provided to resolve the Iub transport network congestion efficiently for HSDPA by dynamic adjustment of the transmit window of the RLC. The RLC protocol is extended with congestion control functionality. The Iub TN and Uu congestion detection method in the Node-B (120) signals the congestion to the RNC (110), and this congestion indication is used by RLC to react on the congestion situation. In the RNC (110), the transmission window of the RLC is adjusted to control the flow rate. When congestion is detected, the RLC transmission window size is decreased. When there is no congestion, then the RLC transmission window size is increased automatically. Different types of congestion are distinguished and are handled in different ways. Alternatively, congestion control is achieved without any modification in the RLC layer from the existing standard. Here, RLC STATUS PDUs are used to change the RLC transmission window size.

Description

technical field [0001] The techniques of this disclosure relate to facilitating efficient flow control for High Speed ​​Downlink Packet Access (HSDPA) in wireless networks. Background technique [0002] With the growing demand for higher throughput (i.e. higher bit rates) and more efficient packet data transmission over wireless networks, the 3rd Generation Partnership Project (3GPP) has used High Speed ​​Downlink Packet Access (HSDPA) extended its specification. In HSDPA, a new shared downlink transport channel called High Speed ​​Downlink Shared Channel (HS-DSCH) is introduced. This channel is shared dynamically between packet data users mainly in the time domain. The application of shared channels makes the use of available radio resources more efficient. HSDPA also supports a new feature, also known as Adaptive Modulation and Coding (AMC), which relies on fast adaptation of transmission parameters to instantaneous radio conditions. The main features of HSDPA include ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04W28/10H04J3/24
CPCH04L47/12H04L47/225H04L1/1832H04L47/10H04L47/11H04L1/1825H04W28/12H04W28/0284H04L47/25H04L47/14H04W28/10H04W28/02H04W8/04
Inventor 桑德尔·拉茨佐尔坦·纳吉C吉尔维斯特·纳达斯彼得·伦达
Owner TELEFON AB LM ERICSSON (PUBL)
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