Reference signal resource allocation

A technology of reference signals and reference signal sequences, applied in the field of wireless communication systems, can solve problems such as performance degradation

Active Publication Date: 2016-05-04
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This interference can degrade performance on both the downlink and uplink

Method used

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Embodiment Construction

[0035] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to limit the scope of the present disclosure. Rather, the detailed description includes specific details for the purpose of providing a thorough understanding of the inventive subject matter. It will be apparent to those skilled in the art that these specific details are not required in every case, and in some instances, well-known structures and components are shown in block diagram form for clarity of presentation.

[0036] Carriers have so far viewed WiFi as the primary mechanism for using unlicensed spectrum to alleviate growing levels of congestion in cellular networks. However, new carrier types (NCT) based on LTE / LTE-A in unlicensed spectrum can be compatible with carrier-grade WiFi, making LTE / LTE-A utilizing unlicensed spectrum an alternative to WiFi. LTE / LTE-A using unlicensed spectrum can utilize LT...

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Abstract

Sequence mapping for reference signal is disclosed in which the reference signal sequence at the fixed set of resource blocks around a predetermined common frequency is generated to be independent from the system bandwidth. The reference signal sequence may be generated around the predetermined common frequency or may be configured based on a cell identifier. Either such solution provides a system bandwidth independent means for a user equipment (UE) to detect the reference signal sequence for decoding a bandwidth information bearing signal received from the communicating base station.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Patent Application No. 61 / 880,499, filed September 20, 2013, entitled "SEQUENCEMAPPINGFORLTE-U" and filed September 17, 2014, entitled "SEQUENCEMAPPINGFORLTE / LTE- AWITHUNLICENSEDSPECTRUM," US Invention Patent Application No. 14 / 489,266, which is hereby expressly incorporated by reference in its entirety. technical field [0003] Aspects of the present disclosure relate generally to wireless communication systems and, more particularly, to sequence mapping of reference signals for long term evolution (LTE) / LTE-Advanced (LTE-A) communication systems utilizing unlicensed spectrum. Background technique [0004] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and so on. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing available...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00
CPCH04L5/0048H04L25/0224H04W16/14
Inventor 骆涛W·陈P·加尔
Owner QUALCOMM INC
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