Discovery reference signal transmission window detection and random access procedure selection

A random access process and random access technology, applied in the field of wireless communication, can solve problems such as battery power consumption, battery time user experience degradation, and unrecognized cells

Active Publication Date: 2018-10-23
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, monitoring DRS may consume battery power
DRS monitoring may limit useful battery time and degrade user experience
It is also possible to time the UE's DRS monitoring so as not to identify a preferred cell for connection

Method used

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  • Discovery reference signal transmission window detection and random access procedure selection
  • Discovery reference signal transmission window detection and random access procedure selection
  • Discovery reference signal transmission window detection and random access procedure selection

Examples

Experimental program
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Embodiment Construction

[0076] A user equipment (UE) may use discovery reference signals (DRS) to perform measurements on serving or neighbor cells. A DRS may include synchronization signals, cell-specific reference signals, master information blocks (MIBs) and other signaling useful for identifying or attaching to a cell. The base station may transmit DRS during a periodically configured DRS transmission window (DTXW). The UE may measure the cell DRS according to a periodically configured DRS measurement timing configuration (DMTC) period. DMTC may be configured for measurements on the serving cell or neighbor cells or both. Further, in various examples, the DMTC may be frequency specific, or may be multiple frequencies where applicable.

[0077] In some cases, a UE may monitor for DRS of multiple cells that may or may not be synchronized in time. Cells that are not synchronized in time may have periodic DTXWs that are also not aligned in time. That is, the DMTC and DTXW of nearby cells may not ...

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PUM

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Abstract

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may monitor a neighbor cell and report the result to a serving base station. Based on the report, the serving base station may identify an estimated discovery reference signal (DRS) transmission window of the neighbor cell. In some cases, the UE may estimate and report parameters of the neighbor DRS transmission window, and in other cases, the UE may make a measurement report and the base station may infer DRS transmission window parameters. The base station may then provide the UE with a DRS measurement timing configuration (DMTC) based on the estimated parameters of the neighbor cell so that the UE may monitor the neighbor cell and the serving cell in an efficient manner. For example, the UE mayconserve battery life by refraining from monitoring DRS during periods when a DRS transmission is not likely.

Description

[0001] cross reference [0002] This patent application claims U.S. Patent Application No. 15 / 441,215, filed February 23, 2017, by Radulescu et al., entitled "Discovery Reference Signal Transmission Window Detection and Discovery Reference Signal Measurement Configuration"; U.S. Provisional Patent Application No. 62 / 318,742, filed February 5, entitled "Discovery Reference Signal Transmission Window Detection and Discovery Reference Signal Measurement Configuration," and Radulescu et al., filed February 26, 2016, entitled "Discovery Reference Priority to U.S. Provisional Patent Application No. 62 / 300,718 for Signal Transmission Window Detection and Discovery Reference SignalMeasurement Configuration,” each of which is assigned to the assignee of the present application. technical field [0003] In general, the following relates to wireless communications and, more specifically, to discovery reference signal (DRS) transmission window detection and discovery signal measurement co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/16H04J11/00H04L5/00H04W74/00
CPCH04J11/0036H04W48/00H04W48/16H04W52/0216H04L5/0057H04L5/0092H04L5/0048H04W24/10Y02D30/70H04W72/23H04W74/0833H04W72/02H04W72/542H04W56/00H04W74/002H04B17/318H04W24/08H04W72/0453H04L41/0866H04W88/02H04W88/08
Inventor A·勒杜列斯库C·帕特尔骆涛A·肯达马拉伊坎南
Owner QUALCOMM INC
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