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Opportunistic decoding of transmissions on a forward link in a machine-to-machine wireless wide area network

A technology of wireless wide area network and forward link, which is applied in the field of communication in the machine-to-machine wireless wide area network, and can solve the problems of inefficient use of power supplies of M2M devices

Active Publication Date: 2015-07-22
QUALCOMM INC
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transmission of ACK messages on the reverse link may result in an inefficient use of power to the M2M device

Method used

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  • Opportunistic decoding of transmissions on a forward link in a machine-to-machine wireless wide area network
  • Opportunistic decoding of transmissions on a forward link in a machine-to-machine wireless wide area network
  • Opportunistic decoding of transmissions on a forward link in a machine-to-machine wireless wide area network

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Embodiment Construction

[0032] Methods, systems and devices are described herein for conserving power of M2M devices by providing an opportunistic decoding scheme for packets received by M2M devices on the forward link of an M2M wireless WAN. Conventional cellular systems can employ additional physical layer channels to facilitate reverse link communication between M2M devices and base stations. For example, a reverse link control channel may be established between the M2M device and the base station to carry a physical layer ACK message. However, establishing these channels and sending physical layer ACK messages requires bandwidth on the reverse link and power of the M2M device. In M2M wireless WAN, it is desirable to save power of M2M devices. Therefore, the traditional cellular system approach presents significant drawbacks for M2M wireless WANs.

[0033] To improve power efficiency, M2M devices may minimize the amount of transmissions they make on the reverse link. In addition, the device can...

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Abstract

Methods, systems, and devices are described for managing wireless communications in a machine-to-machine (M2M) wireless Wide Area Network (WAN). A packet is decoded and demodulated by an M2M device that is received during a time slot of a physical layer forward link frame in the M2M wireless WAN. The packet is transmitted by a base station. The M2M device enters a sleep state before a physical layer acknowledgment (ACK) message is transmitted to the base station to indicate receipt of the packet.

Description

Background technique [0001] In general terms, the following relates to wireless communications, and more specifically, to communications in machine-to-machine (M2M) wireless wide area networks (WANs). Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, sensor data, tracking data, and so on. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources such as time, frequency and power. Examples of such multiple-access systems include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, and Orthogonal Frequency Division Multiple Access (OFDMA) systems. [0002] Generally, a wireless multiple-access communication system may include multiple base stations, each base station simultaneously supporting communicati...

Claims

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Application Information

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IPC IPC(8): H04W4/00H04W4/70
CPCH04W52/0219H04W4/005H04W52/0216H04W52/0229H04W4/70Y02D30/70
Inventor A·K·古普塔田彬
Owner QUALCOMM INC
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