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Connection establishment method, device and system for D2D (device-to-device) terminals

A technology for connection establishment and connection establishment request, applied in the field of communication, can solve problems such as increased delay, and achieve the effect of reducing delay and avoiding impact

Active Publication Date: 2013-04-03
HONOR DEVICE CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Embodiments of the present invention provide a connection establishment method, device, and system for D2D terminals, which can solve the problem caused by the unnecessary random access process performed by the called user terminal when UEs with relatively short distances perform D2D communication in the prior art. The problem of increased latency

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Embodiment Construction

[0032] The method, system and device for establishing a connection of a D2D terminal will be described in detail below.

[0033] figure 2 A schematic flowchart of a method for establishing a connection of a D2D terminal according to an embodiment of the present invention is shown.

[0034] see figure 2 It can be seen that, to establish a D2D connection between the first UE of the calling user equipment and the second UE of the called user equipment, perform the following steps:

[0035] Step 201: the first user equipment UE sends a preamble to the base station;

[0036] Step 202: the base station sends a random access response RA response message to the first UE after receiving the preamble sent by the first UE, whereby the first UE receives the random access response message sent by the base station in response to the preamble . Wherein, the message may carry a timing advance TA value and / or a transmission power value for the first UE, so as to be used by the first UE t...

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Abstract

The invention discloses a connection establishment method, a connection establishment device and a connection establishment system for D2D (device-to-device) terminals. The method comprises the following steps that: first user equipment UE sends a preamble to a base station; the first UE receives a random access response message which responds to the preamble and is sent by the base station; the first UE sends a second UE identifier to the base station, and second UE is the D2D communication objective of the first UE; the first UE receives D2D link configuration parameters of the first UE and RRC connection configuration parameters which respond to the second UE identifier and are sent by the base station; and the first UE establishes a D2D connection based on the D2D link configuration parameters of the first UE and the second UE, and completes the establishment of an RRC connection between the first UE and the base station based on the RRC connection configuration parameters.

Description

technical field [0001] The present invention relates to communication technologies, and in particular to a device to device (Device to Device, D2D) terminal connection establishment method, device and system. Background technique [0002] In a cell network, when a user equipment (User Equipment, UE) wants to communicate with other user equipment, it usually needs centralized control through a base station, for example, in an LTE network, an evolved base station (Evolved Node B, eNB) controls the calls of both parties. Signal connection process such as call establishment between UEs. The benefit of communication links between users being coordinated and controlled by the base station is that the base station can centrally manage the use of wireless resources in the cell, so that the wireless resources can be allocated reasonably and effectively, and at the same time, wireless interference between users can be well avoided. However, if two user equipments are relatively close...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04W76/02
CPCH04W74/0833H04W76/023H04W76/14
Inventor 常俊仁冯淑兰时洁
Owner HONOR DEVICE CO LTD
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