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Method and system for handing over UE (user equipment) to hybrid cell and base station

A cell and base station technology, which is applied in the field of user terminals switching to hybrid cells, which can solve the problems of heavy core network signaling load and large handover delay.

Active Publication Date: 2013-01-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] On the other hand, as an indoor coverage enhancement, HeNB should allow all users who are not members of the CSG group to access. However, due to the strong mobility of these users, and the large number of weekends and Each user to the hybrid cell adopts the S1 handover process, and the access control is performed by the MME. The signaling load of the core network is relatively large, and there is a large handover delay.

Method used

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  • Method and system for handing over UE (user equipment) to hybrid cell and base station
  • Method and system for handing over UE (user equipment) to hybrid cell and base station

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Embodiment 1

[0133] This embodiment describes a method for the MME to indicate the identity of the UE through a path transfer request confirmation message when the target HeNB performs admission control based on the default identity of the UE. image 3 It is a schematic flow diagram of a method for handing over a UE to a hybrid cell in Embodiment 1 of the present invention, as shown in image 3 As shown, the method includes:

[0134] Step 301: UE sends a measurement report to the source (H)eNB. The measurement report at least includes a Physical Cell ID (PCI) of the target base station.

[0135] Step 302: The source (H)eNB (which may be a macro base station or a home base station) selects a handover target base station according to the measurement report, and can determine the type of the handover target base station according to the PCI.

[0136] Step 303: If the target base station is a hybrid mode home base station and meets the basic conditions for X2 handover (there is an X2 interfa...

Embodiment 2

[0153] This embodiment describes the method for the MME to indicate the UE identity through the UE identity indication message when the target HeNB performs admission control based on the default identity of the UE. The difference between this embodiment and Embodiment 1 is that the MME receives the path transfer request After the message, judge the UE's identity under the hybrid mode target HeNB, and immediately indicate the identity to the target HeNB.

[0154] Figure 4 It is a schematic flow diagram of a method for handing over a UE to a hybrid cell according to Embodiment 2 of the present invention, as shown in Figure 4 As shown, steps 401-409, step 411, and steps 413-418 are the same as steps 301-309, step 311, and steps 312-317 in the flow chart of Embodiment 1, and will not be repeated here.

[0155] Step 410: After receiving the path transfer request message, the MME judges whether the UE is a member or a non-member under the hybrid mode target HeNB according to the...

Embodiment 3

[0159] This embodiment describes that the source base station decides whether to adopt the method described in embodiment 1 or embodiment 2 according to the load condition of the target base station, that is, the usage status of radio resources when making a handover decision. In this way, the access success rate of the membership users can be guaranteed under the condition that the target HeNB is heavily loaded. Figure 5 It is a schematic flow diagram of a method for handing over a UE to a hybrid cell in Embodiment 3 of the present invention, as shown in Figure 5 As shown, the method includes:

[0160] Step 501: After receiving the UE's measurement report, the source base station judges that the target HeNB is in hybrid mode according to the PCI. And there is an X2 interface between the source and target base stations, and the source and target base stations are connected to the same MMEpool.

[0161] Step 502: If the source base station detects that the load of the targe...

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Abstract

The invention discloses a method for handing over UE (user equipment) to a hybrid cell. The method comprises the following steps that: a source base station sends an X2 handover request massage to a target base station of a target cell, wherein the target cell is a hybrid cell; the target base station performs admission control to the UE, and then sends a path transfer request massage to an MME (mobility management entity); the MME determines the identity of the UE under the target cell, and indicates the determined result to the target base station; and the target base station performs corresponding treatment according to the identity of the UE indicated by the MME. The invention also correspondingly discloses a system and a base station for handing over the UE to the hybrid cell. According to the invention, during the handover process, a net element of a core net can be prevented from performing received control as far as possible, thus the handing over process can be simplified effectively, and the handover delay is reduced.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and in particular to a method, system and base station for switching a user terminal (UE) to a hybrid (hybrid) cell. Background technique [0002] Femtocells are small, low-power base stations that are mainly used in small-scale indoor places such as homes and offices. The femtocell is connected to the core network of the mobile operator through indoor wired access equipment such as cable, DSL or optical fiber, and provides specific users with access services based on wireless mobile communication networks. It is an effective supplement to the existing network deployment, can effectively improve the coverage of indoor voice and high-speed data services, and has many advantages, such as low cost, low power, simple access, plug and play, saving backhaul, and compatible with existing terminals , improve network coverage, etc. [0003] A home base station in an LTE (Long Term...

Claims

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Application Information

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IPC IPC(8): H04W36/08H04W36/34
CPCH04W36/0055H04W36/34H04W36/08H04W36/0058H04W36/0079
Inventor 黄莹奚进陈琳谢峰祝建建翟恒星
Owner ZTE CORP
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