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Adaptive modulation order for multi-user superposition transmissions with non-aligned resources

A technology of modulation order and resource set, applied in the first part of bit stream mapping field

Active Publication Date: 2019-06-04
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Efficient use of resources for transports with non-aligned transport layers presents a challenge

Method used

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  • Adaptive modulation order for multi-user superposition transmissions with non-aligned resources
  • Adaptive modulation order for multi-user superposition transmissions with non-aligned resources
  • Adaptive modulation order for multi-user superposition transmissions with non-aligned resources

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Embodiment Construction

[0049] Techniques for utilizing adaptive modulation order for Multi-User Superposition Transmission (MUST) with non-aligned resources are described. A base station may schedule transmissions with data for multiple UEs in the same transmission time interval (eg, subframe, etc.). Based on the relative geometry of the first and second UEs, the base station may determine that non-orthogonal layers of transmission (eg, MUST) may be used to transmit data destined for the first and second UEs. In some cases, the base station may use aligned resources for layers associated with the first and second UEs. Using the aligned resources, the enhancement layer for the second UE can be superimposed on the base layer for the first UE using a combined constellation.

[0050] Alternatively, layers may not be aligned along at least one dimension (eg, time, frequency, etc.). For example, the transmission may include an enhancement layer for a first UE across a set of resources and a base layer f...

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PUM

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Abstract

Multi-user superposition transmissions (MUSTs) on non-aligned resources are described. A base station may schedule a transmission to enhancement layer user equipment (UE) and base layer UE. The transmission may include a base layer that spans a base layer resource set and an enhancement layer that spans an enhancement layer resource set, wherein the resource sets may be aligned or un-aligned. Thebase station may use a combined constellation to map symbols to the base layer resource set for communication with the enhancement layer and base layer UE over overlapping portions of the resource sets, and an extended constellation to map symbols to an extended set of resources for which the enhancement layer resource set is exclusive of the base layer resource set. The extended constellation maybe based on an extended modulation order determined based on a base modulation order and an enhancement modulation order.

Description

[0001] cross reference [0002] This patent application claims the benefit of U.S. Patent Application No. 15 / 601,845, entitled "AdaptiveModulation Order for Multi-User Superposition Transmissions with Non-AlignedResources," filed May 22, 2017, by Sun et al. Priority to U.S. Provisional Patent Application No. 62 / 398,839, filed September 23, 2011, entitled "Adaptive Modulation Order for Multi-User Superposition Transmissions with Non-Aligned Resources"; each of the above applications is assigned to the present application the assignee. Background technique [0003] The following relates generally to wireless communications; more specifically, to adaptive modulation order for Multi-User Superposition Transmission (MUST) with non-aligned resources. [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems are capable of supporting communication wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L5/00
CPCH04L1/0009H04L5/0044H04L27/3416H03K7/10H04W4/18H04W72/563H04B7/0413H04L27/34H04W52/143H04W52/262H04W72/12H04W88/04
Inventor J·孙陈万士P·加尔J·蒙托霍
Owner QUALCOMM INC