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A communication method and device in a user equipment-to-network relay scenario

A technology of user equipment and network relay, applied in the field of wireless communication, can solve problems such as RemoteUE data loss, and achieve the effect of reducing data loss

Active Publication Date: 2019-09-17
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a communication method and device in the UE to Network Relay scenario, to solve the problem of data loss of Remote UE due to the establishment or release of the UE to network relay link

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  • A communication method and device in a user equipment-to-network relay scenario
  • A communication method and device in a user equipment-to-network relay scenario
  • A communication method and device in a user equipment-to-network relay scenario

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Embodiment Construction

[0094] The technical solutions provided by the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0095] Figure 4 Shown is a flowchart of a communication method in a UE to network relay scenario provided by an embodiment of the present invention, specifically including the following operations:

[0096] Step 100, judging that a new communication link needs to be established.

[0097] Step 110, after it is determined that a new communication link needs to be established, stop sending data and / or signals on the current D2D link; continue to receive data and / or signals on the current D2D link, the current D2D link is established with the current Relay UE D2D link.

[0098] For the above-mentioned cases 1 and 3, the technical solution provided by the embodiment of the present invention does not release the D2D link established with the current Relay UE after it is determined that a new communication link needs...

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Abstract

The invention discloses a communication method and device for use in a user equipment (UE) to network relay scenario. One method comprises the following steps: judging whether a new communication link needs to be established or not; and if the new communication link needs to be established as judged, not releasing a D2D (Device to Device) link established with current Relay UE, only stopping transmitting data and / or signals on a current D2D link, but continually receiving data and / or signals on the current D2D link, so that the problem of data loss of Remote UE caused by release of a UE to network relay link is effectively solved. Another method comprises the following steps: judging a to-be-off-network coverage range; and establishing a D2D link with Relay UE if the user equipment is in to-be-off-network coverage range, and transmitting data and / or signals through the established link in order to reduce data loss caused by establishment of the UE to network link after network disconnection as much as possible.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular to a communication method and device in a UE to Network Relay (UE to Network Relay) scenario. Background technique [0002] In the future development of the mobile communication system, in order to better meet the needs of users, a device-to-device (D2D, Device to Device) proximity service is introduced. The D2D proximity service includes D2D discovery (Device to Device Discovery) and D2D communication (Device to Device Communication). ). [0003] On the basis of D2D communication technology, user equipment (UE, User Equipment) outside the network coverage—also known as off-network UE, Remote UE—can communicate with the network through a relay (Relay). Specifically, a UE on the network—also known as a Relay UE—is used as a relay node, and data is transferred to it through the Relay UE. This scenario is called UEto Network Relay. Among them, the UE to net...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/00H04W76/14H04W76/18H04W76/19
Inventor 杨星
Owner DATANG MOBILE COMM EQUIP CO LTD