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Methods and apparatus for communicating information using various transmission power modes

A technology of transmit power and mode, applied in power management, wireless communication, electrical components, etc., can solve problems such as equipment interference

Active Publication Date: 2015-03-11
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This simultaneous use of the common resource creates interference issues for devices attempting to resume broadcasting the apex discovery signal

Method used

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  • Methods and apparatus for communicating information using various transmission power modes
  • Methods and apparatus for communicating information using various transmission power modes
  • Methods and apparatus for communicating information using various transmission power modes

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Experimental program
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Embodiment Construction

[0035] figure 1 An exemplary peer-to-peer wireless communication system 100 is shown implemented in accordance with various exemplary embodiments. Exemplary communication system 100 includes a plurality of wireless communication devices including communication device 1 102 , communication device 2 104 , communication device 3 106 , communication device 4 108 , communication device 5 110 , . . . , and communication device n 112 . The wireless communication devices (102, 104, 106, 108, 110, ..., 112) support peer-to-peer communication. The wireless communication devices (102, 104, 106, 108, 110, . . . , 112) support various types of signaling between peers, eg, peer discovery signals, paging signals, traffic data transmission, and the like. Some of these wireless communication devices, such as devices 102, 104, 108, 110 and 112, are mobile communication devices, eg mobile wireless terminals such as handheld mobile communication devices. Still other devices, such as device 3106...

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Abstract

A wireless communications device supports a constant transmission power mode of operation and a time varying transmission power mode of operation for transmitting data, e.g., peer discovery data. The device determines an amount of network congestion and switches between the two modes of operation as a function of the determined amount of network congestion. Various described methods and apparatus are well suited for use in a peer to peer ad hoc wireless communications system in which a limited amount of air link resources are available for peer discovery signaling and the same peer discovery resources are, at times, used concurrently by multiple devices. When network congestion is low, the device operates in the constant transmission power mode. When network congestion is high, the device operates in the time varying power mode. Devices sharing a common peer discovery resource in a local area intentionally select different time varying transmission patterns.

Description

technical field [0001] Various embodiments relate to wireless communication methods and apparatus, and more particularly, to wireless communication methods and apparatus for transmitting data and / or information using a variety of different transmit power levels. Background technique [0002] In some peer-to-peer communication systems, there is a limited number of air link resources available for peer discovery broadcast signaling. Congestion in a system can, and often does, vary widely over time. Sometimes only a few devices may desire to broadcast a peer discovery signal, and each device may be able to acquire and use peer discovery resources that are not used by any other device in its vicinity. However, at other times, there may be a large number of devices expecting to broadcast peer discovery signals, and there may not be enough peer discovery resources available to select unique resources for each device. As a result, during times of high congestion, it is hoped that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/34
CPCH04W52/322H04W52/343H04W52/46H04W52/34
Inventor X·吴厉隽怿N·胡德S·苏布拉玛尼安
Owner QUALCOMM INC