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Used for the discovery resource adaptation mechanism in d2d

A technology for discovering resources and discovering resource pools, which is applied in the field of D2D discovery resource adaptation mechanisms, can solve problems such as unfavorable network performance, resource selection conflicts, impacts, etc., to avoid resource conflicts, ensure reliability, and improve resource utilization. Effect

Active Publication Date: 2018-08-14
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this environment, only random selection of discovery resources will lead to discovery resource selection conflicts in areas with a high density of discovery transmitters, which will adversely affect network performance

Method used

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  • Used for the discovery resource adaptation mechanism in d2d
  • Used for the discovery resource adaptation mechanism in d2d
  • Used for the discovery resource adaptation mechanism in d2d

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Embodiment Construction

[0023] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0024] Under the random selection mechanism of the discovery channel, each UE randomly selects a resource from the discovery resource pool, and transmits discovery information on the selected resource. Meanwhile, in other time intervals, the UE will try to decode the discovery messages (Discovery Message) of other UEs, so as to determine whether the UEs corresponding to these discovery messages are its neighbors. It can be expected that if ...

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Abstract

The present invention provides a discovery resource adaptation mechanism used in LTE D2D. The method for adaptively adjusting the discovery sending period in the user equipment according to the neighbor detection and discovery results, and the base station reconfiguring the neighbor discovery resources according to the user report includes: during the neighbor discovery process, in each neighbor discovery period, according to The result of neighbor detection and discovery, calculate the first parameter, and compare the first parameter with the first and second thresholds respectively; when the number of times the first parameter is greater than or equal to the first threshold is greater than or equal to the first predetermined value and the current When the discovery period is less than the maximum value of the optional discovery period, the user equipment increases the length of its discovery period; or when the number of times the first parameter is less than or equal to the second threshold is greater than or equal to the second predetermined value and the current discovery period of the user equipment is greater than the optional When the minimum value of the discovery period is reached, the UE reduces the length of its discovery period.

Description

technical field [0001] The present invention generally relates to the field of wireless communication, and more specifically relates to an adaptation mechanism for D2D discovery resources. Background technique [0002] In the D2D (Device to Device) system of LTE, when the user equipment (User Equipment, UE) is in the coverage area of ​​the cellular network, the base station (eNodeB, eNB) configures the discovery resource of the UE through the system information (System Information Blocks, SIB) , the discovery resources of each cycle form an available discovery resource pool. According to the discussion on D2D at the 76th meeting of 3GPPRAN1, the D2D neighbor discovery transmitter itself automatically and randomly selects discovery resources from the discovery resource pool as a benchmark discovery channel selection method. [0003] According to the discussion on LTE D2D in the 3GPP RAN1 meeting, the neighbor discovery transmitter includes not only UEs in connected mode (eg,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04
CPCH04W72/53H04W72/52
Inventor 李栋刘勇徐艳丽
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD