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Channel state information (csi) measurement and reporting for enhanced interference management for traffic adaptation (eimta) in lte

A channel measurement and interference measurement technology, which is applied in communication between multiple stations, transmission path sub-channel allocation, transmission modification based on link quality, etc., can solve transmission interference and reduce downlink and uplink performance And other issues

Active Publication Date: 2016-01-06
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the uplink, transmissions from a UE may interfere with transmissions from other UEs communicating with neighboring base stations
Interference can degrade both downlink and uplink performance

Method used

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  • Channel state information (csi) measurement and reporting for enhanced interference management for traffic adaptation (eimta) in lte
  • Channel state information (csi) measurement and reporting for enhanced interference management for traffic adaptation (eimta) in lte
  • Channel state information (csi) measurement and reporting for enhanced interference management for traffic adaptation (eimta) in lte

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Embodiment Construction

[0031] This article provides techniques and devices for channel state information (CSI) measurement and reporting for service-adapted enhanced interference management (eIMTA) in Long Term Evolution (LTE). According to certain aspects, a user equipment (UE) may recognize a subframe as a fixed subframe or a flexible subframe. The UE may also determine whether the subframe is dedicated to uplink transmission or downlink transmission, for example, via received signaling or blind detection. If the flexible subframe is determined to be an uplink subframe, the UE may skip interference measurement and / or CSI measurement filtering for this subframe. Alternatively, the UE may use a small part or all of the system bandwidth to perform interference measurement. The UE may also omit the CSI report for this subframe. Alternatively, the UE may report as usual, or report a predetermined value. According to certain aspects, the UE can specify a new CSI reference signal (CSI-RS) and interfere...

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Abstract

Certain aspects of the disclosure generally relate to wireless communications and, more particularly, to techniques for channel state information (CSI) measurement and reporting for enhanced interference management for traffic adaptation (eIMTA) in long term evolution (LTE). According to certain aspects, a method for wireless communications by a user equipment (UE) is provided. The method generally includes identifying, within a set of subframes, one or more flexible subframes that may be dynamically managed for either uplink or downlink communications, determining whether a current flexible subframe is for either uplink or downlink communications, and performing at least one of channel measurement, interference measurement, or channel state reporting based on the determination.

Description

[0001] Claim priority based on 35U.S.C.§119 [0002] This application claims the rights of U.S. Provisional Patent Application No. 61 / 824,533 filed on May 17, 2013 and U.S. Patent Application No. 14 / 275,942 filed on May 13, 2014, by reference The entire contents of the two are incorporated into this article. Technical field [0003] In a nutshell, certain aspects of the present disclosure relate to wireless communications, and more specifically, to channel state information (CSI) for service-adapted enhanced interference management (eIMTA) in Long Term Evolution (LTE). ) Measurement and reporting techniques. Background technique [0004] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcasting, etc. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing available network resources. Examples of such multiple access networks include code d...

Claims

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Application Information

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IPC IPC(8): H04W24/10H04B7/26
CPCH04B7/0626H04B7/2656H04L1/0026H04W72/0446H04L5/005H04L5/1469H04W24/10H04W72/542
Inventor P·加尔W·陈
Owner QUALCOMM INC