D2D communication method and device

A communication method and communication equipment technology, applied in wireless communication, signaling distribution, channel coding adjustment, etc., can solve the problem of heavy load of wireless communication network, and achieve the effect of improving spectrum utilization and data transmission rate

Inactive Publication Date: 2014-04-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although LTE-A uses various technologies to increase the data rate, with the rapid development of wireless communication and the emergence of ultra-high-speed services (such as high-definition video), the load on the wireless communication network is getting heavier

Method used

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  • D2D communication method and device

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] The embodiment of the present invention also provides another D2D communication method, including:

[0030] Carry the control information and data information to be sent in the physical resource block; the physical resource block includes M orthogonal frequency division multiplexing OFDM symbols in the time domain, and N subcarriers in the frequency domain, one OFDM symbol and A time-frequency resource defined by a subcarrier is represented as a resource uni...

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Abstract

The invention discloses a D2D communication method. The method comprises the step that control information and data information are born on a physical resource block, wherein the control information and the data information need to be sent; the control information comprises at least one of a modulation and coding scheme MCS, a redundant version RV and a new data instruction NDI, and at least one of the MCS, the RV and the NDI is mapped on a high frequency part RE in the physical resource block; the data information is mapped on a blank RE except the RE on which the control information is mapped in the physical resource block; and the physical resource block is sent to a target user device in a D2D communication link between devices. The invention further discloses a D2D communication system. According to the embodiment of the invention, by rationally configuring an uplink physical channel of D2D communication, the utilization rate of a high frequency spectrum and the data transmission rate can be improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a D2D communication method and device. Background technique [0002] 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) LTE-ARel-10 / 11 (Long Term Evolution-Advance Rel-10 / 11, version 10 / 11 of Advanced Long-term Evolution) is an enhancement of LTE Rel-8 technology , the LTE-A system has higher bandwidth requirements than the LTE system, and supports a peak data rate of up to 1 Gbits / s. In order to meet the bandwidth requirements of LTE-A, the LTE-A system uses CA (Carrier Aggregation, Carrier Aggregation) technology as a method to expand system bandwidth, and extensively uses MIMO (Multiple Input Multiple Output, also known as multiple Antenna technology) enhancement technology and adaptive technology to improve data rate and system performance. [0003] Although LTE-A uses various technologies to increase the data rate, with the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L5/00
CPCH04L27/26H04L5/0007H04L5/0044H04L5/0053H04L5/0055H04L5/0051H04W76/14H04L1/0009H04L27/2601H04W72/044
Inventor 张兴炜
Owner HUAWEI TECH CO LTD
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