Method and apparatus for device-to-device communication

A device communication and device technology, applied in wireless communication, machine-to-machine/machine-type communication services, wireless communication services, etc., can solve problems such as D2D coverage limitations, and achieve increased coverage, improved reliability, and increased coverage. effect of distance

Active Publication Date: 2015-11-18
新奇点智能科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing LTETER12 standard, more attention is paid to the star network architecture. The base station or user equipment UE is used as the central con

Method used

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  • Method and apparatus for device-to-device communication
  • Method and apparatus for device-to-device communication

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0025] The device-to-device communication method of the embodiment of the present invention can be applied to a chained communication network. The chained communication network may specifically include a plurality of master control nodes, and each master control node forms a corresponding star node with its surrounding slave nodes. type network, and each master control node as a node in the chain communication network can be used to realize the multi-hop function of the chain communication network, refer to figure 1 , which shows a flow chart of the steps of Embodiment 1 of a method for device-to-device communication according to the present invention, which may specifically include:

[0026] Step 101, the current hop master control node controls the communication between any two slave nodes in the current star network corresponding to the current hop master control node;

[0027] refer to figure 2 , shows a schematic structural diagram of a chain communication network of th...

Embodiment 2

[0035] The method for device-to-device communication in this embodiment may further include the following optional technical solutions on the basis of the first embodiment above. refer to image 3, which shows a flow chart of the steps of an embodiment of a method for establishing a chained communication network according to the present invention, which may specifically include:

[0036] Step 301, the current hop master control node sends a downlink synchronization code to its surrounding slave nodes;

[0037] In a specific implementation, the first-hop master control node can be a node that initiates communication for the first time in an area. For example, assuming that there are a large number of nodes in the area, all nodes can be in the listening state in an idle state. If a node (assuming the aforementioned node 1) wants to initiate communication, it can first send a downlink synchronization code, such as PSS (PrimarySynchronizationSignal, primary synchronization signal...

Embodiment 3

[0071] The method for device-to-device communication in this embodiment may further include the following optional technical solutions on the basis of the second embodiment above.

[0072] refer to Figure 4 , which shows a flow chart of steps in Embodiment 3 of a method for device-to-device communication according to the present invention, which may specifically include:

[0073] Step 401, the current hop master control node sends downlink synchronization codes to its surrounding slave nodes;

[0074] Step 402, the current hop master control node broadcasts the first system information to its surrounding slave nodes, so that the surrounding slave nodes determine the resources of the random access channel according to the first system information;

[0075] Step 403, the current hop master control node receives the random access preamble sent by its surrounding slave nodes according to the resources of the random access channel;

[0076] Step 404, the current hop master contr...

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PUM

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Abstract

Embodiments of the invention provide a method and an apparatus for device-to-device communication. The method and the apparatus are applied to a chain communication network. The chain communication network includes multiple master control nodes, each master control node and surrounding slave nodes thereof constitute a corresponding star network, and each master control node is used as a node in the chain communication network and is used to realize a multi-hopping function. The method comprises the following steps: the master control node of the current hop controls communication between any two slave nodes in the current star network corresponding to the master control node of the current hop; and the master control node of the current hop communicates with the master control node of next hop. By adopting the method and the apparatus provided by the embodiments of the invention, the coverage of the communication network can be increased.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and device for device-to-device communication. Background technique [0002] With the diversification of mobile communication services, for example, social networking, electronic payment, etc. are more and more widely used in wireless communication systems, so that the demand for service transmission between users at close distances is increasing. Therefore, a D2D (Device-to-Device, device-to-device) communication mode has increasingly received widespread attention. [0003] The so-called D2D communication means that two adjacent devices can transmit data through a direct link within a short distance without forwarding through a base station. Using this communication method, on the one hand, it can reduce the traffic of the base station and reduce the processing burden of the base station; on the other hand, the devices that are closer to each other only need...

Claims

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Application Information

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IPC IPC(8): H04W4/00
CPCH04W4/70
Inventor 褚红发王艳龙张明东
Owner 新奇点智能科技集团有限公司
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