A Location Management Method in the Scenario of Intensive User Location Update Using Random Time Delay

A technology of random time delay and location area, which is applied in location information-based services, wireless communication, electrical components, etc., can solve problems affecting communication system performance, insufficient channel resources, signaling storms, etc., to reduce signaling storms , Guarantee the effect of connection rate

Active Publication Date: 2019-10-29
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The disadvantage of the location management strategy in the high-speed railway scenario in the above-mentioned prior art is that in a dense user scenario such as a high-speed train, due to the large number of train users, there will be many mobile terminals performing location update at the same time, and channel resources will be insufficient. , signaling storms, etc., which affect the performance of the communication system

Method used

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  • A Location Management Method in the Scenario of Intensive User Location Update Using Random Time Delay
  • A Location Management Method in the Scenario of Intensive User Location Update Using Random Time Delay
  • A Location Management Method in the Scenario of Intensive User Location Update Using Random Time Delay

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Embodiment 1

[0046] The present invention provides a dense user location management strategy using random time delay, aiming to solve the problems of signaling storm and network congestion in the communication system caused by multiple users simultaneously initiating location updates in the case of dense distribution of users in the high-speed railway environment . The main technical feature of the present invention is that multiple user position update requests that may be initiated simultaneously are distributed to different time points by assigning random time delays. When the location update meets the trigger condition, the user allocates a random delay value for itself according to the received system broadcast parameters, and waits until a certain delay time is reached before initiating a location update request.

[0047] The location management strategy of grouping and randomly sorting dense users in the high-speed train in the time domain, that is, "random delay intensive user loca...

Embodiment 2

[0071] figure 1 A schematic diagram of the location area along the railway line provided by this embodiment, figure 2 A processing flowchart of a location management method in the scenario of intensive user location update using random time delay provided in this embodiment includes the following processing steps:

[0072] Step 1. Set the cell reselection and location update related parameters CRH,n in the cell broadcast system message of the location area boundary base station 0 ,T 0 and T change .

[0073] (1) Cell reselection parameter Cell reselection hysteresis (CRH)

[0074] In engineering implementation, the value of CRH is generally 4dB. In this embodiment, the value of CRH needs to be properly reduced and adjusted, so that CRH=2dB.

[0075] (2) Location update delay packet parameter n 0

[0076] no 0 The size of the value can be determined jointly by the number N of users performing simultaneous location updating in the traditional solution and the number D ...

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Abstract

The invention provides a position manage method using random time delays under a dense user position updating scene; the method comprises the following steps: in a cell overlapping region, a mobile terminal determines to need cell reselection according to a received system message from a base station, and reselects a new cell; the mobile terminal receives a system message broadcasted by the base station of the new cell, and form a position update random delay time t according to n0, T0 and Tchange in the system message; the mobile terminal compares the position update random delay time t with the Tchange, and determines whether to return to the original cell to wait for position update restart according to a comparison result. The method uses the random time delay to manage the mobile terminal positions, and randomly ranks users in the time domain, thus dispersing the dense position update requests while ensuring inter-user fairness, solving the problems that mass users send the position update request in the same time, reducing the signaling storm and network jamming condition generating probability, and ensuring the calling user complete rate.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a location management method in the scenario of dense user location update using random time delay. Background technique [0002] Due to the advantages of fast speed, large transport capacity, low power consumption and low pollution, high-speed railway plays a vital role in the development of the country. At present, China has become the country with the fastest development of high-speed railway in the world. The continuous improvement of speed has brought great benefits to passengers, but it has also brought great challenges to the deployment of mobile communication networks along the railway. Location management is one of them. one. [0003] Due to the mobility of the user terminal, the serving base station needs to effectively track the mobile station in real time and determine its approximate location, so that the user can answer or initiate a call at ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W36/08H04W36/32
CPCH04W4/023H04W4/025H04W36/08H04W36/32
Inventor 吴昊魏小欢
Owner BEIJING JIAOTONG UNIV
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