A method, system and base station for UE handover to hybrid cell

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: 2017-10-31
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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  • A method, system and base station for UE handover to hybrid cell
  • A method, system and base station for UE handover to hybrid cell
  • A method, system and base station for UE handover to hybrid cell

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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

Disclosed in the present invention is a method for handover of a User Equipment (UE) to a hybrid cell, and the method includes the following steps: a source Base Station (BS) sends X2 handover request message to a target BS to which a target cell belongs, and the target cell is a hybrid cell; the target BS processes access control to the UE, if the access control succeeds, then the target BS sends a path switch request message to a Mobile Management Entity (MME); the MME judges the identity of the UE in the target cell, and indicates the judging result to the target BS; and the target BS processes according to the judging result of the MME. A system and BS for handover of an UE to a hybrid cell are also accordingly disclosed by the present invention. By the present invention, the core network element can be tried to avoid processing access control during handover, thereby the handover procedure can be simplified effectively, and handover delay can be 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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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W36/34
CPCH04W36/08H04W36/0058H04W36/0079
Inventor 黄莹奚进陈琳谢峰祝建建翟恒星
Owner ZTE CORP
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