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Method and apparatus for wireless transmission during high speed movement

A technology of moving direction and moving speed, which is applied in wireless communication, electrical components, etc., and can solve problems such as high complexity LTE

Inactive Publication Date: 2017-03-01
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above technology has not been adopted by LTE (Long Term Evolution, Long Term Evolution) due to its high complexity.

Method used

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  • Method and apparatus for wireless transmission during high speed movement
  • Method and apparatus for wireless transmission during high speed movement
  • Method and apparatus for wireless transmission during high speed movement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Embodiment 1 illustrates the switching flow chart of the first node, as shown in the attached figure 1 shown. attached figure 1 , the steps in block F1 and block F2 are optional steps respectively, wherein block F2 describes the process of establishing an RRC connection with the target cell in LTE handover.

[0104] for first node , receiving the first information in step S12.

[0105] for second node, receiving the fourth information in step S23, and sending the first information in step S24.

[0106] for fourth node , the fourth information is sent in step S42, and the fourth information is sent in step S42.

[0107] In Embodiment 1, the first node and the second node are user equipments respectively, and the third node and the fourth node are network devices respectively. The first information includes all or part of fields in the mobilityControlInfo IE, and the fourth information includes the first information. The targetPhysCellId in the first informatio...

Embodiment 2

[0111] Embodiment 2 illustrates the flow chart of establishing a D2D connection, as shown in the attached figure 2 shown.

[0112] for first node , the third information is sent in step S101, and the D2D signal is received in step S102.

[0113] for fourth node , receiving third information in step S401, and sending downlink information in step S402.

[0114] for second node , receiving the downlink information in step S201, and sending a D2D signal in step S202.

[0115] In Embodiment 2, the third information includes {identity of the first node, measurement result of the first node for the second cell, moving speed of the first node, moving direction of the first node, measurement result of the second node} at least one of the . The downlink information instructs the first node to maintain the RRC connection with the second cell through the relay of the second node.

[0116] As a sub-embodiment 1 of Embodiment 2, the D2D signal includes {the downlink information, ...

Embodiment 3

[0118] Embodiment 3 illustrates the flow chart of the second node relaying downlink data packets, as shown in the attached image 3 shown. The step of downlink relay described in block F3 is optional.

[0119] For the first node, the second information is sent in step S111, and the downlink packet data is received in step S112.

[0120] For the second node, the second information is received in step S211, the fifth information is sent in step S212, and the downlink packet data is relayed (received and sent) in step S213.

[0121] For the fourth node, the fifth information is received in step S411, and the downlink packet data is sent in step S412.

[0122] In Embodiment 3, the second information includes all or part of fields in {RLF-Report-r9, RLF-Report-v9e0}. The second information includes an identifier of the second cell, the second cell is maintained by the fourth node, and the second cell is a serving cell of the second node.

[0123] The essence of Embodiment 3 is ...

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Abstract

The invention discloses a method and apparatus for wireless transmission during high speed movement. A first node receives first information sent by a second node in the first step and establishes an RRC connection with a first cell in the second step, wherein the first cell is maintained by a third node, and the first node and the second node are user equipment respectively. The first information contains all or partial domain in mobilityControlInfo IE, and an identifier of the first cell. Call disconnection due to switching can be effectively reduced, and the method and apparatus are especially suitable for high-speed mobile communication.

Description

technical field [0001] The present invention relates to a wireless signal transmission scheme in a wireless communication system, in particular to a D2D (Device to Device, device-to-device)-based cell handover method and device. Background technique [0002] The high-speed mobile scene represented by V2X (Vehicle to X) has become a research hotspot in the next generation of mobile communication. However, a serious challenge faced by traditional cellular networks in high-speed mobile scenarios is: the high call drop rate faced by terminals during handover. Among them, too late handover, that is, the connection failure (Connection Failure) between the terminal and the source base station caused by it, is one of the main reasons for the handover failure. [0003] In order to improve the robustness of handover, technologies such as soft handover and relay handover are applied to some handheld terminals. However, the above technology has not been adopted by LTE (Long Term Evolu...

Claims

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Application Information

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IPC IPC(8): H04W36/08H04W36/18
CPCH04W36/08H04W36/18
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD
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