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Method and apparatus for controlling mobility for cell having small cell service area

一种目标小区、控制消息的技术，应用在电气元件、无线通信、连接管理等方向，能够解决没有具体准备小型服务区域的系统变量操作机制等问题，达到降低切换失败的概率的效果

Inactive Publication Date: 2019-08-20
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no specific preparation for the application of system variables or the development of operating mechanisms suitable for small service areas

Method used

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  • Method and apparatus for controlling mobility for cell having small cell service area
  • Method and apparatus for controlling mobility for cell having small cell service area
  • Method and apparatus for controlling mobility for cell having small cell service area

Examples

Experimental program
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Effect test

Embodiment 1

[0034] figure 2 is a view for describing a method for reducing the probability of handover failure in a scenario where small cells 205 are sparsely arranged within the service area of ​​the macro cell 200 . When the UE 210 passes through the small cell while moving at high speed, the time for the UE 210 to stay in the service area of ​​the small cell will be short. Thus, in order to stably maintain communication, it is more appropriate to skip handover instead of forcibly performing handover to a small cell. This embodiment proposes a method for skipping handover. In addition, this embodiment proposes a method of quickly performing reconnection when a Radio Link Failure (RLF) occurs while skipping handover.

[0035]In step 215, the UE 210 reports measurement information to the eNB, and the measurement information includes the moving speed information of the UE and the moving direction information of the UE. In addition to the moving speed information of the UE and the movi...

Embodiment 2

[0043] In the LTE technology, when the eNB does not configure the handover although the UE is in a situation where the UE should actually perform the handover, the UE cannot perform the handover. That is, although the No-HO indicator described earlier is not newly defined, the eNB can also control whether the UE performs handover. Therefore, in this embodiment, the operation regarding the case where no No-HO indicator is newly defined will be described. When the UE selects a small cell as a new suitable cell after the occurrence of RLF, in order to immediately perform the establishment procedure without performing the re-establishment procedure, a new operation of the UE is required. That is, since the No-HO indicator or the cell ID of the small cell to which handover is not allowed is not provided in advance from the eNB, an additional operation of the UE is required in order to skip the re-establishment procedure. Therefore, when a predetermined condition is satisfied, the ...

Embodiment 3

[0052] Figure 7 is a view for describing a method for reducing the probability of handover failure in a scenario where a plurality of small cells are densely arranged while being adjacent to each other. When a UE moving at high speed in an area where small cells are concentrated is notified of one target cell according to the prior art, the UE may leave another cell other than the target cell before handover is completed. In short, this means the failure of handover. A method for fundamentally removing this probability of failure is to inform the UE of multiple target cells. The present invention proposes a process of notifying UE of multiple target cells in LTE standard technology.

[0053] The UE 705 reports the measurement result to the current serving cell 700 in step 715 . The measured results may include information about the moving speed and moving direction of the UE, signal strength information (RSRP / RSRQ) of the serving cell and neighboring cells, PCI information...

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Abstract

The present invention relates to a method and an apparatus for controlling mobility for a cell having a small cell service area in a mobile communication system. The method for controlling mobility ofa terminal in a mobile communication system, according to one embodiment of the present invention, can comprise the steps of: receiving a control message including handover configuration information,the handover configuration information including information about a plurality of target cells; determining one target cell among the plurality of target cells that satisfies a predetermined condition for handover; and performing a random access procedure on the determined target cell.

Description

[0001] This application is an application for an invention patent with an application date of January 24, 2014, an application number of 201480006135.7, and an invention title of "Method and device for controlling mobility for a cell with a small cell service area in a mobile communication system" Divisional application. technical field [0002] The present invention relates to a method and apparatus for effectively controlling mobility for a cell having a small cell service area in a mobile communication system. Background technique [0003] In general, mobile communication systems are developed to provide communication while ensuring mobility of users. With the rapid development of technology, such mobile communication systems have reached the stage of providing not only voice communication but also high-speed data communication services. Recently, standard operation from 3GPP to Long Term Evolution-Advanced (LTE-A) is in progress as one of next-generation mobile communic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/32
CPCH04W36/0085H04W36/0083H04W36/00835H04W36/324H04W76/10H04W36/34H04W36/0016H04W36/04H04W36/32
Inventor 金相范金成勋郑景仁
Owner SAMSUNG ELECTRONICS CO LTD
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