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Backward compatible lte system design for asymmetric uplink/downlink spectrum

A downlink and physical uplink technology, applied in the field of wireless communication systems, can solve problems such as transmission interference and downlink performance degradation

Inactive Publication Date: 2013-04-24
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the downlink, transmissions from a base station may receive interference caused by transmissions from neighboring base stations or from other wireless radio frequency (RF) transmitters
On the uplink, transmissions from UEs may be subject to interference caused by uplink transmissions from other UEs communicating with the same or neighboring base stations or from other wireless RF transmitters
This interference degrades performance on both the downlink and uplink

Method used

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  • Backward compatible lte system design for asymmetric uplink/downlink spectrum
  • Backward compatible lte system design for asymmetric uplink/downlink spectrum
  • Backward compatible lte system design for asymmetric uplink/downlink spectrum

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Embodiment Construction

[0029] 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 represent the only configurations in which the concepts described in this application can be implemented. The detailed description includes specific details to provide a thorough understanding of various concepts. It will be apparent, however, to one of ordinary skill in the art that the concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts.

[0030] The techniques described in this application may be used in various wireless communication networks, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and others. The terms "network" and "system" are often used interchangeably. CDMA network can implement such as Universal Terrestrial Radio Access (UTRA), Telecommunications Industry Assoc...

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Abstract

A method of frequency division duplex (FDD) wireless communications asymmetrically maps between downlink and uplink spectrum blocks. Multiple downlink spectrum blocks may be mapped to an uplink spectrum block.

Description

technical field [0001] In general, aspects of the invention relate to wireless communication systems, and in particular, aspects of the invention relate to asymmetric mapping between downlink and uplink spectrum blocks in LTE systems. Background technique [0002] Wireless communication networks have been 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 network resources. A wireless communication network may include a number of base stations that can support communication for a number of user equipments (UEs). A UE can communicate with a base station through downlink and uplink. The downlink (or forward link) refers to the communication link from the base station to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the base station. [0003] A ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
CPCH04W74/0833H04L5/0057H04W72/04H04W72/00H04L5/0023H04L5/0048H04L1/00H04L5/0055H04W28/0289H04W28/02H04L5/0007H04B7/15507H04L5/143H04W72/0493H04L1/1893H04B1/50H04W72/21H04L1/1861H04W24/00H04W28/04
Inventor D·P·马拉蒂魏永斌
Owner QUALCOMM INC