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Subsequent evolution embedded D2D(device-to-device) implementing method on basis of IMT-A (intelligent multimode terminal-advanced) standards

A technology of IMT-A and an implementation method, applied in the field of cellular networks, can solve problems such as unsatisfactory effects, and achieve the effects of long durability, improved spectrum utilization, and reduced energy consumption

Inactive Publication Date: 2013-01-02
XIDIAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, this solution is based on an ideal environment with strict power control, ignoring the impact of D2D users on cellular users, and has many limitations in application, and the effect is not ideal in actual operation.

Method used

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  • Subsequent evolution embedded D2D(device-to-device) implementing method on basis of IMT-A (intelligent multimode terminal-advanced) standards
  • Subsequent evolution embedded D2D(device-to-device) implementing method on basis of IMT-A (intelligent multimode terminal-advanced) standards
  • Subsequent evolution embedded D2D(device-to-device) implementing method on basis of IMT-A (intelligent multimode terminal-advanced) standards

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Embodiment Construction

[0051] Without loss of generality, the present invention is applied to an easy-to-understand network for illustration, and the transmission frame structure is as follows figure 2 As shown, the transmission frame is transmitted by the D2D user using the uplink resources of the cellular communication without significantly changing the structure of the original cellular communication transmission frame.

[0052] The network scene used in the present invention, such as image 3 shown. image 3 The three users are UE 1 、UE 2 and UE 3 , they are all within the coverage of the base station BS, at the current moment UE 1 、UE 2 and UE 3 Perform standard cellular communication with the base station, and at the next moment UE 2 with UE 3 There is a need for mutual communication. Order g ij , i=1,2,3; j=1,2,3 is UE i with UE j The channel gain between, h j ,j=1,2,3 is UE j Channel gain with base station BS, l j ,j=1,2,3 is the UE obtained by GPS j The location information...

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Abstract

The invention discloses a subsequent evolution embedded D2D(device-to-device) implementing method on the basis of IMT-A (intelligent multimode terminal-advanced) standards, and mainly solves the problems that complicated mode selection and single resource allocation strategy during establishment of a cellular network utilizing the embedded D2D technology. The subsequent evolution embedded D2D implementing method includes that a base station acquires state information of a channel between a user and the base station, and forms an adjacent user list by the aid of a global position system GPS; the user percepts adjacent users to acquire a power level list of the adjacent users and uploads the power level list to the base station; the base station forms a full-network channel gain list and generates a D2D potential cluster of the user; the optimal transmission mode is selected for the base station according to the full-network channel gain list, and user's requirement for quantity of service Qos and information of the D2D potential cluster by a joint optimization resource allocation method when the terminal user sends a service request for the base station; and communication is established between the terminal user and a target user according to the selected optimal transmission mode. Compared with conversional cellular communication, the method can assist in increasing frequency spectrum utilization rate, increasing system capacity and reducing overall power consumption of cells.

Description

technical field [0001] The invention belongs to the technical field of communication, relates to a terminal direct-to-D2D transmission mechanism, and can be used in a cellular network following the evolution of the IMT-A standard. Background technique [0002] D2D technology is a new wireless communication technology that has been paid close attention to and researched by academia and industry in recent years. The so-called D2D technology refers to a data transmission technology that establishes a communication link between terminal devices in a cellular cell for direct communication without affecting the operation of the overall cellular network, without relaying through a base station. By introducing D2D technology, the reuse of cellular resources can be realized, transmission efficiency can be improved, terminal energy consumption can be reduced, and the overall performance of the cellular system can be greatly improved. Existing studies have shown that the capacity of a...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04W76/02
CPCY02B60/50Y02D30/70
Inventor 李勇朝孙鹏刘毅李丹萍任智源张海林梁海涛张锐韩鹍
Owner XIDIAN UNIV
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