Discovery resource adaption mechanism used for D2D

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

Active Publication Date: 2015-09-23
ALCATEL LUCENT SHANGHAI BELL CO LTD
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AI Technical Summary

Problems solved by technology

In this environment, only random selection of discovery resources will lead to discovery resource selection co

Method used

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  • Discovery resource adaption mechanism used for D2D
  • Discovery resource adaption mechanism used for D2D
  • Discovery resource adaption mechanism used for 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 invention provides a discovery resource adaption mechanism used in a LTE D2D. In user equipment, according to a neighbor detection and discovery result, adaptive adjustment is performed on a discovery sending period. And a base station carries out reconfiguration on a neighbor discovery resource according to a user report. The mechanism is characterized in that during a neighbor discovery process, in each neighbor discovery period, according to the neighbor detection and discovery result, a first parameter is calculated and the first parameter is compared to a first threshold and a second threshold; when a frequency that the first parameter is greater than or equal to the first threshold is greater than or equal to a first preset value and a current discovery period of the user equipment is less than a maximum value of an optional discovery period, the user equipment increases a length of the discovery period; or when a frequency that the first parameter is less than or equal to the second threshold is greater than or equal to a second preset value and the current discovery period of the user equipment is greater than a minimum value of the optional discovery period, the user equipment reduces the length of the 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 of the UE through the system information (System Information Blocks, SIB) resources, the discovery resources of each cycle form an available discovery resource pool. According to the discussion on D2D in the 76th meeting of 3GPP RAN1, the D2D neighbor discovery transmitter itself automatically randomly selects a discovery resource from a 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, RRC...

Claims

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Application Information

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