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Updating next-expected TSN and receiver window to avoid stall conditions

A receiver and window technology, applied in communication between multiple stations, wireless network protocols, electrical components, etc., can solve problems such as errors, service quality degradation, and delays

Active Publication Date: 2010-07-21
3G LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0058] Whenever the NET value falls outside the receiver window, the receiving side still stores the received MAC-hsPDU in the reordering buffer, even though it may be delivered immediately to the upper layer, resulting in delay in the process
[0059] Such delivery delays lead to errors in upper layers, and / or lead to severe quality of service degradation

Method used

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  • Updating next-expected TSN and receiver window to avoid stall conditions
  • Updating next-expected TSN and receiver window to avoid stall conditions
  • Updating next-expected TSN and receiver window to avoid stall conditions

Examples

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Embodiment Construction

[0076] The present invention is described as being implemented in a W-CDMA mobile communication system. However, the present invention can also be adapted and implemented in communication systems operating under other types of communication.

[0077] Figure 7 A non-limiting exemplary embodiment of the invention is depicted in the Image 6 An improvement on the prior art method shown in .

[0078] At step 610, a MAC-hs PDU with a Transport Sequence Number (TSN) is received having a Sequence Number (SN) (=nonce) value.

[0079] In step 620, the SN value is compared with the receiver window range, and if the SN value is within the range, the following step 630 is performed, but if it is outside the range, the following step 622 is performed.

[0080] In step 630, when the SN value falls within the receiver window range, the SN value is compared with NET, and it is checked whether a MAC-hs PDU corresponding to this SN has been previously received. If the SN is smaller than the ...

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Abstract

Updating the next-expected transmission sequence number (NET) or the receiver window position to ensure that the NET always falls within the receiver window range to prevent unnecessary delays in delivering data blocks in order to avoid stall conditions and achieve high speed data transmission capabilities for a high-speed downlink packet access (HSDPA) system.

Description

technical field [0001] The present invention relates to wireless (radio) communication and, in particular, to processing data modules by updating next expected TSN and receiver windows to avoid stall conditions. Background technique [0002] The invention relates to reordering buffers controlled by user equipment (UE) in UMTS (Universal Mobile Telecommunications System) with next expected Transmission Sequence Number (TSN) and for HSDPA (High Speed ​​Downlink Data Packet Access) The receiver window of the system, the UMTS being a European type of IMT-2000 system, in particular, involves controlling the reordering buffer to prevent when the next expected TSN falls outside the range of the receiver window due to MAC-hs PDU The pause state caused by not being sent to the upper layer. [0003] UMTS (Universal Mobile Telecommunications System) is a third-generation mobile communication system developed from the European GSM (Global System for Mobile Communications) system, with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26
CPCH04B7/26H04W80/00
Inventor 千成德李承俊李英大
Owner 3G LICENSING SA
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