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Method and arrangement for handling unreliable scheduling grants in a telecommunications network

A telecommunication network, reliable technology, applied in the field of communication systems, can solve the problems of errors, system interference, etc., to achieve the effect of preventing poor uplink reception quality and alleviating the problem of unreliable transmission licenses

Inactive Publication Date: 2019-07-12
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is always a risk that the grants are of such power that e.g. a "down" grant might be mistakenly seen as a "hold" grant, which in turn causes too much interference in the system

Method used

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  • Method and arrangement for handling unreliable scheduling grants in a telecommunications network
  • Method and arrangement for handling unreliable scheduling grants in a telecommunications network
  • Method and arrangement for handling unreliable scheduling grants in a telecommunications network

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Embodiment Construction

[0031] abbreviation

[0032] UE User Equipment

[0033] UL TPC Uplink Transmit Power Control

[0034] E-RGCH Enhanced relative licensed channel

[0035] E-AGCH Enhanced Absolute Granted Channel

[0036] TTI transmission time interval

[0037] SG service license

[0038] TFC Transport Format Combination

[0039] RLS radio link set

[0040] E-DCH Enhanced Dedicated Channel

[0041] WCDMA wideband code division multiple access

[0042] RRM radio resource management

[0043] 3GPP third generation cooperation project

[0044] RNC radio network controller

[0045] SHO soft handover

[0046] A detailed description

[0047] A first problem with the prior art is that the user equipment (UE) does not perform any reliability check on the received scheduling grant, which can lead to misinterpretation of the grant by the UE, especially for soft handover. In other words, some grant messages received by the UE may be unreliable. This situation can happen due to several reas...

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Abstract

The present invention relates to methods and arrangements for handling unreliable scheduling grants within a WCDMA communication system. The user equipment detects that the received scheduling permission is unreliable and adjusts its service permission based on this information. The user equipment is also able to report continuously received unreliable grants as an event to the network, allowing the network to adapt its operation to reduce unreliable grants.

Description

technical field [0001] The present invention relates generally to communication systems and in particular to methods and arrangements for handling unreliable scheduling grants in WCDMA communication systems. Background technique [0002] In WCDMA enhanced uplink, the Node B sends scheduling commands to the user equipment (UE) in every Transmission Time Interval (TTI), which can currently be 2 ms or 10 ms. Each user equipment maintains a serving grant (SG) by increasing or decreasing its transmission bit rate as dictated by the scheduling grant received from the network. This change of the transmission bit rate is in turn implemented by applying the selection of the Transport Format Combination (TFC) in the user equipment. [0003] A Scheduling Grant or a Scheduling Grant message provides an indication to a user equipment from eg a Node B of a serving radio link set and a non-serving radio link set, about the maximum amount of uplink resources that the user equipment can use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/14H04W28/04H04B1/7097H04J13/00
CPCH04W28/04H04W72/23H04B7/264H04W52/24
Inventor M.卡兹米W.米勒R.安德森D.格斯滕博格J.博格斯特龙S.帕克瓦尔
Owner TELEFON AB LM ERICSSON (PUBL)
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