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A method and a device for sending a synchronization signal

A technology for synchronizing signals and equipment, applied in the direction of synchronizing devices, multiplexing communication, wireless communication, etc., can solve problems such as reducing network performance, and achieve the effect of avoiding CH switching

Active Publication Date: 2016-03-30
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frequent CH transitions may also degrade the performance of the network, which benefits from static interference patterns

Method used

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  • A method and a device for sending a synchronization signal
  • A method and a device for sending a synchronization signal
  • A method and a device for sending a synchronization signal

Examples

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Embodiment Construction

[0025] Briefly described, the synchronization mechanism disclosed herein enables a device supporting D2D communication (such as a user equipment (UE) of a cellular communication network that also supports D2D communication) to communicate between different supporting device-to-device (D2D) devices as a synchronization reference. Communicating devices are differentiated so that they can choose to synchronize with an appropriate synchronization reference according to their need for synchronization. In order to enable a UE or a D2D communication enabled device to identify a suitable synchronization reference, embodiments of the present disclosure provide a synchronization signal carrying information about the "sync state" of the device transmitting the synchronization signal. By doing so, the receiver UE or D2D communication enabled device is able to detect whether the synchronization signal is a stable synchronization reference or a temporary signal transmitted by the broadcastin...

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PUM

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Abstract

The exemplary embodiments relate to a method (800) and a first Device-to-Device, D2D, communication enabled device (1000) for operating as a synchronization reference to other D2D communication enabled devices located within radio coverage of the first D2D communication enabled device. According to the method (800), the first D2D communication enabled device transmits (820) a synchronization signal that conveys information about an intention of the first D2D communication enabled device regarding operation as a synchronization reference to the other D2D communication enabled devices.

Description

technical field [0001] This embodiment relates to synchronization in a communication system. In particular, it relates to methods and devices for transmitting synchronization signals in a communication system. Background technique [0002] In the field of telecommunications, so-called device-to-device (D2D) communication has been proposed as a means of providing peer-to-peer services between user equipments (UEs). Device-to-device communication is a well-known and widely used component of many existing wireless technologies, including adhoc and cellular networks. Examples include Bluetooth and several variants of the IEEE 802.11 group of standards, such as WiFiDirect. These systems operate in unlicensed spectrum. [0003] Recently, device-to-device (D2D) communication underpinning cellular networks has been proposed as a means to take advantage of the close range of communicating devices while enabling the devices to operate in a controlled interference environment. Typi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W84/18H04W4/70
CPCH04J3/0638H04W4/70H04W56/0025
Inventor S·索伦蒂诺
Owner TELEFON AB LM ERICSSON (PUBL)