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Method and apparatus for communication between user equipments

A user equipment, user plane technology, applied in wireless communication, vehicle-to-vehicle communication, transportation and packaging, etc., can solve problems such as failure of normal communication, and achieve the effect of maintaining service continuity

Active Publication Date: 2021-03-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the existing D2D communication technology is limited to the communication in the base station or in the UP loopback, UE1 and UE2 will not be able to communicate normally in the cross-UP communication scenario, or when UE1 or UE2 switches from one UP to another continuous service

Method used

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  • Method and apparatus for communication between user equipments
  • Method and apparatus for communication between user equipments
  • Method and apparatus for communication between user equipments

Examples

Experimental program
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Effect test

Embodiment 1

[0063] The specific scenario where this embodiment is applied is that the vehicle is performing V2V service communication, but not performing UP switching. refer to image 3 , UE1, UE2 and UE3 are terminals of the V2V service type. In this embodiment, during the communication process, no UP switching occurs for any UE. The communication process mainly includes the following contents. Both UE2 and UE3 send data packets to UE1. UE1 is served by UP1, UE2 is served by UP2, and UE3 is served by UP3. Since UE1 is now served by UP1, the context record of UE1 on UP1 may be marked as the "primary" context record. UE1, UE2 and UE3 are not limited to terminals of the V2V service type; instead, they may be other mobile terminals suitable for D2D communication. The specific implementation process is as follows (such as image 3 shown):

[0064] 1a. Send a packet data unit (Packet Data Unit, PDU) session establishment request from UE1 to the CP. The CP learns that UE1 is a V2V type ...

Embodiment 2

[0079] Another specific scenario where this embodiment can be applied is: during the communication process between vehicles, even if the movement of the vehicles changes the user plane gateway serving the UE, service continuity can be maintained. Such as Figure 4 As shown, both UE1 and UE2 are terminals of the V2V service type, and UE2 sends a data packet to UE1. Since UE1 is now served by UP1, the context record for UE1 created on UP1 may be marked as the "master" context record. Due to the movement of UE1, the user plane gateway serving UE1 switches from UP1 to UP3. The path for transmitting data packets is changed from path 1 to path 2. UE1 and UE2 are not limited to terminals of the V2V service type; instead, they may be other mobile terminals capable of D2D communication. The specific implementation process is as follows (such as Figure 5 shown):

[0080] 1a to 1c and 2a to 2c. These steps are the same as Steps 1a to 1c and 2a to 2c in Example 1.

[0081] 3. UE2 ...

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Abstract

The present invention provides a method and device for inter-user equipment (user equipment, UE) communication. The method includes: receiving a data packet from a first UE, the data packet including data and an IP address of a second UE; obtaining a context record of the second UE, the context record including The IP address of the second user plane and the identifier of the second user plane; according to the identifier of the second user plane, the data packet is sent to the second user plane, so that the second user plane can send The data packet is sent to the second UE. By using the solution provided in the method, when a cross-UP communication scenario occurs, the UE can still communicate normally and maintain service continuity.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of mobile communication, and in particular, relate to a method and system for implementing device-to-device (device-to-device, D2D) communication in a cellular communication network. Background technique [0002] One of the development goals of mobile communication is to establish a wide network including various types of terminals. This is also one of the starting points for the current development of the Internet of Things under the framework of cellular communication. According to industry forecasts, by 2020, there will be approximately 50 billion cellular access terminals worldwide, most of which will be machine communication terminals with IoT features. The Internet of Vehicles is an extension of the Internet of Things in the field of transportation. The Internet of Vehicles is a unified network in which technologies such as wireless communication, sensing and detection are used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12
CPCH04W28/06H04W4/70H04W4/46H04L67/10H04L67/12H04L67/568H04W36/037H04W76/14H04W76/11H04W36/0033H04L61/5061H04L61/5007H04W88/16H04W76/12H04W76/15H04W8/26H04W80/04H04W80/10
Inventor 周汉夏渊姚琦
Owner HUAWEI TECH CO LTD
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