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Channel quality signaling for persistent/semi-persistent radio resource allocations

A channel quality reporting and persistent technology, applied in wireless communication, transmission modification based on link quality, characterized by signaling, etc., can solve the problem of not being able to deliver detailed frequency information

Active Publication Date: 2011-05-11
NOKIA TECHNOLOGLES OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because of the low number of payload bits, they cannot deliver detailed frequency information to help eNBs in scheduling decisions
Also, DRX mode may limit the possibility to send PUCCH-based CQI for users converging on VoIP

Method used

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  • Channel quality signaling for persistent/semi-persistent radio resource allocations
  • Channel quality signaling for persistent/semi-persistent radio resource allocations
  • Channel quality signaling for persistent/semi-persistent radio resource allocations

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Embodiment Construction

[0047] Although not limited thereto, embodiments of the invention are particularly beneficial for use in E-UTRAN (also known as LTE or 3.9G), and relate to CQI-related signaling in persistent / semi-persistent resource allocation scenarios. Described in detail below is a novel approach that allows CQI reporting that can be embedded in persistent UL transmissions without explicit triggering at each transmission interval and without extending the controls already used in LTE for resource allocation signaling. Although the scheme is described with reference to LTE, this description is only exemplary and not limiting; these teachings can be easily extended to other communication systems besides E-UTRAN.

[0048] In an embodiment of the invention, when a UE is given a persistent or semi-persistent UL resource allocation in which the CQI indicator is set to a value indicating "ON", the UE will utilize every first transmission (which is in the persistent / The CQI report is sent on the...

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Abstract

A persistent or a semi-persistent uplink resource allocation also comprises an indication for a user equipment UE to send channel quality reports. The format for the channel quality report is determined (based on a transmission mode for which the UE receives a downlink shared channel). In at least first transmissions of user data for instances of the persistently allocated uplink resource the UE sends user data and a channel quality report according to the determined format. For the case that a NACK is received in reply to one of those sent user data with channel quality reports, four options are detailed: re-send the NACK' d user data on a next instance of the persistently allocated UL resource with or without a channel quality report, and re-send the NACK' d user data on a dynamically allocated uplink resource with or without a channel quality report.

Description

[0001] Cross References to Related Applications [0002] Pursuant to 35 U.S.C. § 11 9(e), this application claims priority to US Provisional Patent Application No. 61 / 130,991, filed June 4, 2008, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] Exemplary and non-limiting embodiments of the present invention relate generally to wireless communication systems, methods, apparatus and computer programs, and more particularly to signaling to a network, especially when a communication apparatus is operating according to a persistent (or semi-persistent) resource allocation A technique for channel quality indication between a mobile communication device and a portable communication device. Background technique [0004] The following defined abbreviations are used herein: [0005] 3GPP Third Generation Partnership Project [0006] AT Assignment Table (PDCCH) [0007] CQI Channel Quality Indicator / Indication [0008] DL downlin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W72/54H04L12/54
CPCH04L1/0026H04L1/0027H04L1/0028H04L1/1607H04W72/04H04W72/542H04W72/21H04W72/23H04W72/0466
Inventor T.E.伦蒂拉J.奥贾拉
Owner NOKIA TECHNOLOGLES OY