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Mobile communication system and method for switching to closed user group cell

A closed subscriber group and cell handover technology, applied in wireless communication, access restriction, electrical components, etc., can solve the problems of lack of access control means, handover failure, etc., and achieve the effect of improving reliability and handover speed

Inactive Publication Date: 2011-06-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The technical problem to be solved by the present invention is to provide a mobile communication system and a method for switching to a Closed Subscriber Group (CSG) cell, which are used to solve the problem of lack of access control means in the prior art when switching to a CSG cell The problem that caused the switch to fail

Method used

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  • Mobile communication system and method for switching to closed user group cell
  • Mobile communication system and method for switching to closed user group cell
  • Mobile communication system and method for switching to closed user group cell

Examples

Experimental program
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Embodiment 1

[0058] Such as image 3 As shown, without loss of generality, the detailed optimization method is described as follows by taking the handover between cells of the evolved home base station of the LTE system as an example:

[0059] Step 301, the source home base station HeNB1 receives the UE's measurement report and considers that the current UE meets the handover condition, then HeNB1 (via the home base station gateway HeNB GW1) sends a first message carrying access control request information to the MME;

[0060] The access control request information may carry information about one or several neighboring cells of the current serving cell, such as Cell2 cell information adjacent to HeNB2, where the neighboring cell information may include the cell identity of Cell2 (such as the cell global identity CGI) , and / or the CSG identifier (CSG ID) of Cell2, and / or the access mode of Cell2 (such as Close access mode or Hybrid access mode), etc.

[0061] Step 302, the MME performs acc...

Embodiment 2

[0065] If a direct interface is supported between base stations, such as in an LTE system, HeNB or HeNB GW supports a direct interface (for example, there is an X2 interface between HeNBs or between HeNB GWs or between HeNB and a macro base station, or between HeNB GW and a macro base station) Such as Figure 4As shown, taking the handover between evolved home base station cells of the LTE system as an example, the detailed implementation is described as follows:

[0066] Step 401, the source home base station HeNB1 receives the UE's measurement report, and considers that the current UE meets the handover condition, then HeNB1 (via the home base station gateway HeNB GW1) initiates a first message carrying access control request information to the MME;

[0067] The access control request information may carry information about one or several neighboring cells of the current serving cell, such as Cell2 cell information adjacent to HeNB2, where the neighboring cell information ma...

Embodiment 3

[0078] In the UMTS system, if the HNB or the HNB GW supports the direct interface. For example, if there is an Iur interface between HNBs, the enhanced relocation process of the Iur interface can be further optimized. Such as Figure 5 As shown in , the HNB GW only plays the role of transparent transmission in the process, so it is omitted in the figure.

[0079] Step 501, the source home base station HNB1 receives the UE's measurement report and considers that the current UE meets the relocation condition, then HNB1 (via the home base station gateway HNB GW1) initiates a first message carrying access control request information to the core network;

[0080] The access control request information may carry information about one or several neighboring cells of the current serving cell, such as cell information of Cell2 adjacent to HNB2, which may include the cell identity of Cell2, and / or the CSG identity (CSG ID) of Cell2, And / or the access mode of Cell2 (such as Close acces...

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Abstract

The invention discloses a mobile communication system and a method for switching to a closed user group cell. In the communication system, a source base station sends a first message to a core network, and the first message carries access control request information; the core network carries out access control on corresponding user equipment according to the access control request information and replies an access control result to the source base station through a second message, and the second message carries access control result information; and when the source base station starts switching from the user equipment to the closed user group cell, the source base station selects a target closed user group cell for the user equipment according to the access control result and then starts cell switching of the user equipment to the selected target closed user group cell. In the invention, before the switching is started in the source base station, the access control is carried out on the user equipment to be switched, and then switching is started according to the access control result, thereby a switching failure caused by an access control failure can be avoided, and the reliability and the speed of switching can be improved greatly.

Description

technical field [0001] The present invention relates to a wireless cellular communication system, more specifically, to a mobile communication system and a method for switching to a closed subscriber group cell. Background technique [0002] Home base station (HNB, Home NodeB) is a small, low-power base station deployed in indoor places such as homes and offices. Its main function is to provide users with higher service rates and reduce the cost of using high-rate services. It makes up for the lack of coverage of existing distributed cellular wireless communication systems. The advantages of femtocells are affordable, convenient, low power output, plug and play, etc. [0003] The home base station user is connected to the core network through the home base station access network (HNB AN, Home NodeB AccessNetwork). figure 1 It is a schematic diagram of a femtocell network layout in a Universal Mobile Telecommunications System (UMTS, Universal Mobile Telecommunications Syste...

Claims

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Application Information

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IPC IPC(8): H04W36/08H04W48/20H04W88/08
Inventor 和峰奚进韩立锋王昇明
Owner ZTE CORP
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