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Hierarchical control channel structure for wireless communication

A control channel, wireless communication technology, applied in the field of communication, can solve problems such as performance degradation

Inactive Publication Date: 2011-06-08
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Interference from interfering base stations and interfering UEs can degrade performance for both downlink and uplink

Method used

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  • Hierarchical control channel structure for wireless communication
  • Hierarchical control channel structure for wireless communication
  • Hierarchical control channel structure for wireless communication

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0021] The techniques described herein may be used in a variety of wireless communication networks such as: CDMA, TDMA, FDMA, OFDMA, SC-OFDMA, and others. The terms "network" and "system" are often used interchangeably. A CDMA network may implement a radio technology such as Universal Terrestrial Radio Access (UTRA), cdma2000, and so on. UTRA includes Wideband-CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95 and IS-856 standards. A TDMA network may implement a radio technology such as Global System for Mobile Communications (GSM). OFDMA networks can implement technologies such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash- and other radio technologies. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are new releases of UMTS that use E-UTRA, which uses OFDMA on the downlink and SC-FDMA on t...

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Abstract

Techniques for sending control information in a wireless network are described. In an aspect, a hierarchical control channel structure may be used, a first group of control channels may be sent in a low reuse segment, and a second group of control channels may be sent in a non-reuse segment. In another aspect, a first control channel is sent in the low reuse segment and is used to configure a second control channel sent in the non-reuse segment so that the second control channel can be reliably received in dominant interference scenarios. In one design, a first base station sends a first message on a first control channel to a user equipment (UE). The UE sends a second message to an interfering base station to request it to reduce interference to a second control channel. The first base station sends control information on the second control channel to the UE.

Description

[0001] This application claims priority to U.S. Provisional Application No. 61 / 080,044, filed July 11, 2008, entitled "HIERARCHICALCONTROL SIGNALING," assigned to the assignee of this application, and incorporated by reference This article. technical field [0002] The present disclosure relates generally to communications, and more specifically, to techniques for transmitting control channels in wireless communications networks. Background technique [0003] Wireless communication networks are widely deployed to provide various communication content such as: voice, video, packet data, messaging, broadcasting, and the like. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing available network resources. Examples of these multiple access networks include: Code Division Multiple Access (CDMA) networks, Time Division Multiple Access (TDMA) networks, Frequency Division Multiple Access (FDMA) networks, Orthogonal FDMA (OFDMA) n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/00H04W72/54
CPCH04W72/082H04W72/541H04B15/00H04J11/005H04W72/20
Inventor R·保兰基A·D·汉德卡尔N·布尚
Owner QUALCOMM INC