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Method and device for sending synchronization signals

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: 2020-03-20
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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  • Method and device for sending synchronization signals
  • Method and device for sending synchronization signals
  • Method and device for sending synchronization signals

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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Abstract

Exemplary embodiments relate to a method (800) and a first device supporting device to device D2D communication (1000), a first device supporting D2D communication (100) for operating as a synchronous reference to other devices supporting D2D communication within the radio coverage of the first device supporting D2D communication. According to the method (800), the first device supporting D2D communication transmits (820) synchronization signal, the synchronization signal conveys information related to the first device supporting D2D communication as a synchronization reference of other devices supporting D2D communication.

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 ad hoc and cellular networks. Examples include Bluetooth and several variants of the IEEE 802.11 group of standards, such as WiFi Direct. 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. Ty...

Claims

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Application Information

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