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Synchronization signal design for wireless devices in a long range extension mode

A technology of synchronization signal and main synchronization signal, applied in the directions of wireless communication, synchronization device, pilot signal distribution, etc., can solve problems such as affecting the cost of wireless devices

Active Publication Date: 2015-11-18
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Several factors affect the cost of manufacturing and operating a given wireless device
The main manufacturing cost drivers are: (1) processing speed (primarily at receive), (2) number of antennas, and (3) bandwidth

Method used

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  • Synchronization signal design for wireless devices in a long range extension mode
  • Synchronization signal design for wireless devices in a long range extension mode
  • Synchronization signal design for wireless devices in a long range extension mode

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Embodiment Construction

[0043] The embodiments set forth below represent the necessary information to enable one skilled in the art to practice the embodiments and illustrate the best mode of carrying out the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the disclosure and will recognize applications of these concepts not specifically addressed herein. It should be understood that these concepts and applications are within the scope of this disclosure and the appended claims.

[0044] Systems and methods are disclosed that relate to synchronization signals that are particularly well suited for wireless devices in extended coverage areas of cells of a cellular communication network. Before discussing various embodiments of the present disclosure, it is instructive to briefly discuss Long Term Evolution (LTE) and conventional synchronization signals used in LTE. It is noted that while many of t...

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Abstract

Systems and methods related to a synchronization signal particularly well suited for wireless devices in an extended coverage area of a cell of a cellular communications network are disclosed. In one embodiment, a base station transmits a synchronization signal including multiple repetitions of a basic synchronization block during a coherence time of a downlink channel over which the synchronization signal is transmitted. The multiple repetitions of the basic synchronization block during the coherence time enable coherent combining during detection of the synchronization signal at wireless devices located in the cellular communications network. This coherent combining enables, for example, wireless devices located in an extended coverage area of a cell served by the base station to synchronize to the cell using a shorter synchronization signal than that which would be required if only non-coherent combining were used.

Description

[0001] related application [0002] This application claims the benefit of Provisional Patent Application Serial No. 61 / 753,703, filed January 17, 2013, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to cellular communication networks, and in particular, to synchronization signals for cellular communication networks. Background technique [0004] There is an increasing need to support efficient and cost-effective devices or terminals in cellular communication networks. This is especially true of the increasing interest and development of machine-to-machine (M2M) communications. In the 3rd Generation Partnership Project (3GPP) standard, unlike traditional services such as voice and web streaming, M2M services are due to the 3GPP Technical Specification (TS) 22.368V11.6.0 "Services for Machine Type Communications (MTC) Requirements; Phase 1" often have very different requirements for cellul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04L27/26
CPCH04B1/7073H04L5/0048H04L27/2655H04L27/2692H04W56/00H04W56/0015H04W56/001H04L27/26132
Inventor R.鲍尔德迈尔P.弗伦格尔K.迪谋J.贝里曼
Owner TELEFON AB LM ERICSSON (PUBL)
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