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Multi-hop transitroute design method based on terminal direct communication

A terminal direct communication and multi-hop relay technology, which is applied in the design field of multi-hop relay routing, can solve problems such as the impact of terminal communication quality, achieve the effect of shortening transmission delay and reducing the waste of spectrum resources

Active Publication Date: 2015-06-24
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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  • Claims
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Problems solved by technology

This communication method will cause some problems. For example, at the edge of the cell, where the signal coverage of the base station is not very good, the communication quality of the terminal will be affected. In some cases where network resources are limited and flexible scheduling is required, the base station It is fixed and cannot be moved, so the base station can only use power control, rate control, etc. to improve the communication quality of the system

Method used

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  • Multi-hop transitroute design method based on terminal direct communication
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  • Multi-hop transitroute design method based on terminal direct communication

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Embodiment Construction

[0038] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0039] 1) D2D clustering process

[0040] Under the control and management of the base station, all terminals that need to be distributed and are eligible to be distributed are assigned to a D2D cluster to facilitate the adoption of D2D technology.

[0041] Such as figure 1 As shown, in the background of the cellular system, there are several terminals that need to be distributed data, among which, the black terminal is called the confirmed terminal (ACK-Device), which means the terminal that has received the data to be distributed, and its number is recorded for N ACK ; The white terminal is called an unacknowledged terminal (NACK-Device), indicating that the terminal has not received the data to be distributed, and its number is recorded as N NACK .

[0042] In order to describe the D2D multi-hop relay routing algorithm more conveniently, the present invention ...

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Abstract

The invention discloses a multi-hop transitroute design method based on terminal direct communication. Direct communication among terminals is permitted, the burden of a cellular system is relieved, and the capacity of a communication system is expanded. A D2D communication system improves the resource utilization rate of a communication network and system reliability by leading in the relaying technology. In order to meet the scene where the same data need to be sent to multiple terminals within a large range in a low-delay mode, a route is selected in this way, and a transmission route of the data is built. A solution scheme is provided in order to overcome the cavitation phenomenon that a goal terminal can not be reached.

Description

technical field [0001] The invention relates to a design method of a multi-hop relay route based on terminal direct communication technology, and belongs to the technical field of wireless communication. Background technique [0002] The traditional wireless communication system takes the base station as the core, and the base station controls the terminals in its coverage area and transmits information as a relay station. This communication method will cause some problems. For example, at the edge of the cell, where the signal coverage of the base station is not very good, the communication quality of the terminal will be affected, and in some cases where network resources are limited and flexible scheduling is required, the base station It is fixed and cannot be moved, so the base station can only use power control, rate control and other methods to improve the communication quality of the system. [0003] In order to improve the communication quality of cellular communic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/22
Inventor 邵世祥阮智昊
Owner NANJING UNIV OF POSTS & TELECOMM
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