KR20120030952A - Method for determining relocation process and determining handover process - Google Patents

Abstract

PURPOSE: A location registration renewal procedure determination method and handover procedure determination method are provided to reduce the failure probability of a location registration update by determining a location registration renewal procedure. CONSTITUTION: An HNB(Home Node B) GW(Gate Way) or an OAM(Operation, Administration, and Maintenance) apparatus notify location registration renewal information to an HNB(401). The HNB determines the location registration renewal procedure executed in a terminal according to the location registration renewal information(402).

Description

How to determine location registration renewal procedure and how to determine handover procedure {METHOD FOR DETERMINING RELOCATION PROCESS AND DETERMINING HANDOVER PROCESS}

TECHNICAL FIELD The present invention relates to mobile communication technology, and more particularly, to a method for determining a location registration update procedure and a method for determining a handover process.

The home base station is a base station used in a home including a Home evolved Node B (HeNB) and a Home Node B (HNB). HeNB is a home base station in Long Term Evolution (LTE) system and HNB is a home base station in Universal Mobile Telecommunication System (UMTS). 1 shows a connection structure of an HNB in a conventional UMTS. As shown in FIG. 1, the user equipment (UE) is connected to the HNB via the Uu interface, the HNB is connected to the home base station gateway (HNB GW) via the Iuh interface, and the home base station gateway is connected to the core network via the Iu interface. It is connected to a Serving General Packet Radio Service (GPRS) Supporting Node (SGSN) in a Core Network (CN).

LTE technology is an evolution of the third generation (3G) mobile communication system that has the advantage of improving cell capacity and reducing system delay.

2 is a schematic diagram illustrating a configuration of a conventional LTE system. As shown in FIG. 2, the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) of the LTE system is a radio resource management entity (Mobile) such as a macro base station (eNB) and a home base station (HeNB). It mainly includes a management entity (MME), and may further include a home base station gateway (HeNB GW). When a home base station gateway is not included, the HeNB may be directly connected to a mobility management entity (MME) of the core network, and when a home base station gateway is included, the HeNB is connected to a mobility management entity through a home base station gateway. The mobility management entity is an important network entity of the core network that realizes functions of radio access bearer setup, mobility management, and the like.

To provide more access services to the UE, there are several types of HNB / HeNB, such as open HNB / HeNB, mixed HNB / HeNB, and Closed Subscriber Group (CSG) type HNB / HeNB. Can be. Each closed subscriber group has a closed subscriber group identification that uniquely identifies this closed subscriber group. The open HNB / HeNB is not specifically limited to the accessed user equipment, i.e. some user equipment can access the open HNB / HeNB, and the closed subscriber group HNB / HeNB can only access the specific user equipment served by the HNB / HeNB. (The specific user device is referred to hereinafter simply as the closed subscriber group user device for ease of explanation), and the mixed HNB / HeNB is used to provide better quality access services to the closed subscriber group user device. It may allow access of closed subscriber group user equipment served by and at the same time allow access of non-closed subscriber group user equipment.

In a UTMS system, a user equipment may perform a location registration update procedure when moving between HNBs, and in relatively LTE systems, a user equipment performs handover processing when moving between different HeNBs or between HeNBs and eNBs. Can be done. In particular, both the location registration update procedure and the handover procedure are procedures performed when the user equipment (in connected mode) moves between different base stations (eNB or Radio Network Control entity (RNC), etc.) or cells. The only difference between the two procedures is that the particular procedure has little difference when applied to different systems. In addition, the conventional relocation process and the handover process have similar disadvantages and will be described below.

Currently, when a user equipment performs location registration update between various HNBs under one home base station gateway, location registration update is performed through SGSN, which surely increases the burden on the core network, resulting in deterioration of location registration update performance. . Therefore, a location registration update method for optimizing a user device according to the prior art is proposed. Referring to FIG. 3, the method includes the following steps.

Step 301: The user equipment is connected to the core network through the source S-HNB and the home base station gateway, and a Circuit Switched (CS) domain and / or packet switched domain between the user equipment and the core network. PS) The service is activated.

Step 302: The S-HNB determines whether to perform location registration update of the user equipment in the current CS and / or PS service.

Step 303: The S-HNB determines whether location registration update is performed via Home Base Station Application Protocol (HNBAP) or Radio Access Network Application Part (RANAP) signaling according to the information of the HNB neighbor cell. If the S-HNB chooses to trigger the home base station application protocol location registration update procedure, the HNB sends an HNBAP location registration update request message to the home base station gateway. This message contains all the necessary information of the global cell identification of the source cell and the destination cell, the user device context (UE context), and all other destination HNB requests holding the location registration updated user device.

Step 304: Alternatively, an access control or member verification process may be performed for the user device. This step does not emphasize the present invention and detailed technical description thereof is omitted.

Step 305: The home base station gateway sends an HNBAP location registration update request message to the destination T-HNB. The home base station gateway adds upstream transport layer parameters to the message. The location registration update request message may perform an implicit user device registration process.

Step 306: The T-HNB sends an HNBAP Location Registration Update Response message to the home base station gateway.

Step 307: The home base station gateway sends a location registration update response message to the S-HNB.

Step 308: After preparing for HNBAP location registration update, the S-HNB initiates an RRC reconfiguration process to instruct the user equipment to move to the destination HNB.

Step 309: The user equipment sends an RRC Connection Reconfiguration Complete message to the T-HNB.

Step 310: The S-HNB sends an HNBAP Location Registration Update Delegation message to the home base station gateway.

Step 311: The home base station gateway sends an HNBAP location registration update delegation message to the T-HNB.

Step 312: The T-HNB sends a HNBAP Location Registration Update Complete message to the home base station gateway. This message notifies the home base station gateway of the completion of the location registration update.

Step 313: The home base station gateway sends a RUA (RANAP User Adaptation) disconnect message to the S-HNB.

Step 314: The home base station gateway sends an HNBAP user device de-register message to the S-HNB. The S-HNB releases the resource assigned to the user equipment.

The transmission of user plane data between the HNB and the core network may be performed through one tunnel or two tunnels. One tunnel means that user plane data is transmitted directly from the HNB to the core network or directly from the core network to the HNB; Two tunnels means that user plane data is sent from the HNB to the home base station gateway to the next core network, or from the core network to the home base station gateway to the next HNB.

In LTE, the transmission of user plane data between the HeNB and the core network may be performed through one tunnel or two tunnels. One tunnel means that user plane data is transmitted directly from the HeNB to the S-GW / PDN GW or directly from the S-GW / PDN GW to the HeNB; Two tunnels means that user plane data is sent from the HeNB to the home base station gateway and then to the S-GW / PDN GW, or from the S-GW / PDN GW to the home base station gateway and then to the HeNB.

As can be seen from the optimized location registration update procedure shown in Fig. 3, the S-HNB initiates an optimized location registration update procedure (HNBAP location registration update procedure, etc.) terminated at the home base station gateway, or a conventional RANAP location. Determine if registration renewal procedures are initiated. The conventional RANAP location registration update procedure is described in detail in 3GPP TS 23.060, and the detailed technical description thereof is omitted. If the user plane data is transmitted through one tunnel, when the user equipment is moved from the S-HNB to the T-HNB, the core network needs to know the change of the downstream user plane. Therefore, although the RANAP location registration update procedure cannot be used, the current HNB cannot know whether user plane data is transmitted through one tunnel or two tunnels, and therefore, the conventional location registration update procedure stops location registration update to update location registration. There is a tendency to reduce efficiency.

Similarly, in LTE systems a similar problem exists when user equipment is handed over between different HeNBs or between HeNBs and eNBs. The handover mode may be an original S1 handover or an optimized handover (such as an X2 handover). If S1 handover, the S-HeNB sends an S1 access protocol (AP) handover request message to the home base station gateway (if a home base station gateway arrangement exists); If it is X2 handover, the S-HeNB sends an X2AP handover request message to the T-HeNB or via the home base station gateway to the T-HeNB. In addition, if the X2 handover is terminated at the gateway, the HeNB also needs to know if user plane data is transmitted over one tunnel or two tunnels, and at the same time it needs to know if the home base station gateway supports the X2 protocol. However, at present the HeNB does not know if the home base station gateway supports the X2 protocol. In addition, when the user equipment is handed over from the HeNB to the eNB, when selecting the use of the mode of performing the X2 handover through the home base station gateway, it is required that some conditions are satisfied in addition to the requirement of the home base station gateway supporting the X2 protocol. If necessary, for example, there is an X2 interface between the home base station gateway and the destination eNB, and there is an S1 interface between the destination eNB and the source mobility management entity of the user equipment. However, the HeNB conventionally does not know the information. Since the HeNB cannot know this information, the conventional handover procedure tends to cause handover failures, thereby degrading handover efficiency.

As can be seen from the above, in the conventional location registration update / handover process, it is not possible to determine whether the optimized location registration update / handover mode can be used according to the necessary information, so that the location registration update / handover fails to improve efficiency. Tends to drop.

In view of this, it is an object of the present invention to provide a method of determining a location registration update procedure that can reduce the probability of failure of location registration update and efficiently improve location registration update.

The present invention further provides a method for determining a handover procedure that can reduce the probability of handover failure and efficiently improve handover.

In order to achieve the above object, the technical solution of the present invention is implemented as follows.

The method for determining a location registration update procedure may include information on whether the home base station gateway supports an optimized location registration update procedure by a Home NodeB GateWay (HNB-GW) or OAM (Operation And Maintenance). Notifying Node B), and determining, by the HNB, the location registration update procedure to be executed in the user equipment according to the information of whether the home base station gateway supports the optimized location registration update procedure.

The method for determining the handover process includes notifying the HeNB of information about whether the home base station gateway supports X2 handover by the home base station gateway or OAM, and whether the home base station gateway supports X2 handover by the HeNB. Accordingly, determining a handover procedure to be executed in the user equipment.

As can be seen, in the method of determining the location registration update procedure according to the present invention, when the home base station gateway supports information of the optimized location registration update procedure in advance, the HNB is informed, and when the location registration update procedure is executed. The HNB can determine whether the optimized location registration update procedure or the initial location registration update procedure implemented through the core network is executed according to the information of whether the home base station gateway supports the optimized location registration update procedure. Unnecessary failure of the update procedure is avoided, and the location registration update efficiency is improved. Similarly, in the method for determining handover processing according to the present invention, the HeNB is informed of whether the home base station gateway supports X2 handover in advance, and when the home base station gateway executes the handover process, the HeNB is informed of the X2 hand. Since it is possible to determine whether the X2 handover or the initial S1 network handover process is executed according to the information on whether to support the over, unnecessary failure of the X2 handover process is avoided, and the handover efficiency is improved.

1 is a schematic diagram illustrating a connection structure of an HNB in a conventional general purpose mobile communication system;
2 is a schematic diagram illustrating a configuration of a conventional long term evolution system;
3 is a diagram illustrating an optimized location registration update procedure of a user device in the prior art;
4 is a flowchart for a method of determining a location registration update procedure according to the present invention;
5 is a flowchart for a method of determining handover processing according to the present invention;
6 is a diagram showing a process of a home base station gateway performing notification through an HNB registration process according to the first embodiment of the present invention;
7 is a diagram showing a process in which an OAM such as an HMS performs notification through an HNB registration process according to the second embodiment of the present invention;
8 is a diagram illustrating a process of a home base station gateway performing notification through an RUA access message according to a third embodiment of the present invention;
9 is a diagram showing a process in which an S-HNB initiates a location registration update procedure according to the fourth embodiment of the present invention;
10 is a diagram showing a process in which an S-HNB initiates a location registration update procedure according to the fifth embodiment of the present invention;
11 is a diagram showing a process in which an S-HNB initiates a location registration update procedure according to the sixth embodiment of the present invention;
12 is a diagram showing processing by a home base station gateway according to a seventh embodiment of the present invention to perform notification through HeNB registration processing;
13 is a diagram showing a process in which a HeMS performs notification through HeNB registration processing according to the eighth embodiment of the present invention;
14 is a diagram showing a process in which an S-HeNB initiates a handover process according to the ninth embodiment of the present invention;
15 is a diagram illustrating a process of initiating a handover process by the S-HeNB according to the tenth embodiment of the present invention;
16 is a diagram illustrating a process in which an S-HeNB initiates a handover process according to an eleventh embodiment of the present invention.

In view of the problems existing in the prior art, the present invention determines a method and handover procedure for determining a location registration update procedure that can reduce the probability of location registration update / handover failure and improve location registration update / handover efficiency. Provide a way to. The solution of the present invention can be realized by the following method.

How to determine the location registration update procedure. 4 shows a flowchart for determining a location registration update procedure, the method comprising the following steps.

Step 401: The home base station gateway or OAM notifies the HNB of the information about whether the home base station gateway supports the optimized location registration update procedure.

Step 402: The HNB determines the location registration update procedure to be performed for the user equipment according to the information on whether the home base station gateway supports the optimized location registration update procedure.

How to determine handover processing. 5 shows a flow diagram for determining handover processing, the method comprising the following steps.

Step 501: The home base station gateway or OAM notifies the HeNB of the information about whether the home base station gateway supports X2 handover.

Step 502: The HeNB determines a handover procedure to be performed for the user equipment according to the information of whether the home base station gateway supports X2 handover.

For clarity of technical solution of the present invention, the solution of the present invention will be described in more detail with reference to the drawings and embodiments.

It should be noted that all examples in the following embodiments are made in case of location registration update of user equipment between HNB and handover of user equipment between HeNB in LTE system. The gateway of the system is HBNB GW or HeNB GW. In the figure, the solution described in the present invention is also applicable if an eNB also accesses a mobility management entity (MME) through a gateway, or another radio resource management entity accesses a core network through a gateway.

First embodiment:

In this embodiment, the home base station gateway (HNB GW) notifies the HNB of information on whether the HNG GW supports the location registration update procedure optimized by the HNB registration process. Here, the information on whether the home base station gateway (HNB GW) supports the optimized location registration update procedure is described in 1) whether the home base station gateway (HNB GW) transmits user plane data through one tunnel or two tunnels. Information may be included, or 2) a home base station gateway (HNB GW) is assigned an HNB application protocol (HNBAP) location update procedure, an access layer application protocol of an interface between the HNB and HNBRAP location registration procedure, or between an RNC and an RNC. It may include information on whether the protocol stack (Iur protocol) is supported.

Information about whether the home base station gateway (HNB GW) supports the optimized location registration update procedure may include any one or more of the above information. In particular, three cases exist as follows.

Case 1: Information about whether the home base station gateway (HNB GW) supports the optimized location registration update procedure is information on whether the home base station gateway (HNB GW) transmits user plane data through one tunnel or two tunnels. When the home base station gateway (HNB GW) transmits user plane data through one tunnel, the home base station gateway (HNB GW) does not support the optimized location registration update procedure; When the home base station gateway (HNB GW) transmits user plane data through two tunnels, the home base station gateway (HNB GW) supports an optimized location registration update procedure.

Case 2: information about whether the home base station gateway (HNB GW) supports the optimized location registration update procedure is determined whether the home base station gateway (HNB GW) supports the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol. If the home base station gateway (HNB GW) does not support the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol, the home base station gateway (HNB GW) supports an optimized location registration update procedure. Not; When the home base station gateway (HNB GW) supports the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol, the home base station gateway (HNB GW) supports the optimized location registration update procedure.

Case 3: information about whether the home base station gateway (HNB GW) supports the optimized location registration update procedure information about whether the home base station gateway (HNB GW) transmits user plane data through one tunnel or two tunnels And when the home base station gateway (HNB GW) supports the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol, the home base station gateway (HNB GW) transmits user plane data through one tunnel. Or if the home base station gateway (HNB GW) does not support the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol, the home base station gateway (HNB GW) does not support the optimized location registration update procedure; If the home base station gateway (HNB GW) transmits user plane data through two tunnels and the home base station gateway (HNB GW) supports the HNBAP location update procedure, HNBRAP location update procedure or the Iur protocol, the home base station gateway (HNB GW) supports the optimized location registration update procedure.

FIG. 6 is a diagram illustrating a process of a home base station gateway (HNB GW) performing notification through an HNB registration process including the following steps according to the first embodiment of the present invention.

Step 601: The HNB sends an HNB registration request message to the home base station gateway (HNB GW).

Step 602: The home base station gateway sends an HNB registration response message to the HNB. The HNB registration response message includes information on whether the home base station gateway (HNB GW) supports the optimized location registration update procedure, and in particular, this information is used by the home base station gateway (HNB GW) in one tunnel or two. Information on whether to transmit through two tunnels; Alternatively, the information may be information about whether the home base station gateway (HNB GW) supports the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol.

The HNB stores the information received from the home base station gateway (HNB GW).

Second embodiment:

In this embodiment, an operation, administration and maintenance (OAM) device such as an HNB management system (HMS) is a location registration update procedure in which a home base station gateway (HNB GW) is optimized for an HNB. Notify if information is supported. In this embodiment, the information of whether the home base station gateway (HNB GW) supports the optimized location registration update procedure is the same as in the first embodiment.

7 is a diagram illustrating a process in which an HMS performs notification through an HNB registration process according to a second embodiment of the present invention, which includes the following steps.

Step 701: The HNB sends an HNB registration request message to an OAM entity (HeMS, etc.).

Step 702: The OAM entity sends an HNB Registration Response message to the HNB. The HNB registration response message includes information on whether the home base station gateway supports an optimized location registration update procedure. In particular, the information indicates whether the home base station gateway transmits user plane data through one tunnel or two tunnels. ; Or it may be information on whether the home base station gateway supports the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol. The HNB stores the information received from the OAM.

Third embodiment;

In this embodiment, the home base station gateway informs the HNB of the information about whether the home base station gateway supports the optimized location registration update procedure via a RUA (RANAP user adaptation) connection message. In this embodiment, the information of whether the home base station gateway supports the optimized location registration update procedure is the same as in the first embodiment.

8 is a diagram illustrating a process of a home base station gateway according to a third embodiment of the present invention performing notification via an RUA connection message including the following steps.

Step 800: The home base station gateway (HNB GW) receives a location registration update trigger (such as a RANAP location registration update request message) of an inbound user equipment.

Step 801: The home base station gateway (HNB GW) determines the T-HNB, and the home base station gateway (HNB GW) sends a RUA connection message to the T-HNB. The RUA connection message includes a RANAP location registration update request message, and the RUA connection message includes information on whether the home base station gateway supports an optimized location registration update procedure. In particular, this information may include information about whether the home base station gateway transmits user plane data through one tunnel or two tunnels; Or it may be information on whether the home base station gateway supports the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol.

Step 802: 802a) The home base station gateway and the T-HNB perform an implicit registration. 802b): The T-HNB allocates appropriate resources for location registration update. The T-HNB stores information on whether it supports the optimized location registration update procedure received in step 801. If the home base station gateway does not support the optimized location registration update procedure or if the home base station gateway uses one tunnel user plane transmission mode of the user equipment, the T-HNB will initiate the core network update when starting the next location registration update of the user equipment. Executes a conventional location registration update procedure performed via T-HNB to S-HNB; If the home base station gateway supports the optimized location registration procedure or if the home base station gateway uses the two tunnel user plane transmission modes of all user equipments, the T-HNB will optimize the location registration when the next location registration update of the user equipment is initiated. The update procedure can be executed. For example, if the user equipment is updated for location registration under one gateway or in one closed subscriber group of one gateway, an optimized location registration update procedure is executed.

Step 803: The T-HNB sends a location registration update request acknowledgment message to the home base station gateway via an RUA direct transfer message.

Fourth Embodiment:

In this embodiment, the S-HNB uses the information obtained from the first, second or third embodiments to determine the location registration update procedure to be used for the user equipment. 9 is a diagram showing a process in which the S-HNB initiates a location registration update procedure according to the fourth embodiment of the present invention including the following steps.

Step 900: The S-HNB determines to perform a location registration update procedure of the user equipment. The S-HNB may store stored information of whether the home base station gateway supports an optimized location registration update procedure, or information of whether the home base station gateway transmits user plane data through one tunnel or two tunnels, and other information (eg, a user). Location update procedure optimized (i.e., termination at the gateway) depending on whether the device is moving under one home base station gateway or if the user device is moving within one closed subscriber group and one home base station gateway Or a conventional location registration update procedure performed through the core network is executed. For example, the information stored by the S-HNB is information of a home base station gateway that transmits user plane data or information of a home base station gateway that supports an optimized location registration update procedure, and the user equipment includes one home base station. When moving under a gateway or when a user equipment moves within one closed subscriber group and one home base station gateway, the S-HNB executes an optimized location registration update procedure (ie, a location registration update procedure terminated at the gateway), That is, it is determined to perform step 901. Otherwise, the conventional location registration update procedure performed through the core network is executed.

Step 901: The S-HNB performs an optimized location registration update procedure.

The focus of the present invention is to use information from the home base station gateway to determine whether a conventional location registration update procedure or an optimized location registration update procedure (i.e., a location registration update procedure terminated at the gateway) is performed through the core network. That's how. The optimized location registration update procedure may be the HNBAP location registration update procedure shown in FIG. 3, or the location registration update procedure mentioned in R3-101474 of 3GPP RAN3, or other optimized location registration update procedure (HNBRAP location registration update procedure or Iur location). Registration renewal procedure). What kind of optimized location registration update procedure is used is not limited in the present invention.

Fifth Embodiment:

In this embodiment, when the home base station gateway supports the optimized location registration update procedure or the S-HNB does not know whether the home base station gateway transmits user plane data through one tunnel or two tunnels, When moving under one home base station gateway or when a user equipment moves within one closed subscriber group and one home base station gateway, an optimized location registration update procedure may be attempted first; If the location registration update procedure fails, the location registration update procedure is restarted according to the information obtained from the home base station gateway.

Fig. 10 is a diagram showing a process in which the S-HNB according to the fifth embodiment of the present invention starts the location registration update procedure including the following steps.

Step 1001: The S-HNB sends an HNBAP location registration update request message to the home base station gateway.

Step 1002: If the home base station gateway does not support the optimized location registration update procedure or the home base station gateway transmits user plane data through one tunnel, the location registration update fails, and the home base station gateway fails the HNBAP location registration update request. Send a message to the S-HNB. This message includes the reason for the failure of the location registration update, the value of which is the home base station gateway which transmits information or user plane data through the one tunnel of the home base station gateway that does not support the optimized location registration procedure. It is set to information. Information of a home base station gateway that transmits user plane data through one tunnel includes information on a home base station gateway that transmits user plane data through one tunnel, or transmits user plane data of all user equipments through one tunnel. It may be information of a home base station gateway.

The S-HNB stores the information of the home base station gateway which does not support the optimized location registration update procedure or the information of the home base station gateway that transmits user plane data through one tunnel, and the S-HNB stores the core network according to this information. A conventional location registration update procedure is performed, that is, proceeds to step 1003. Home base station that does not support optimized location registration update procedure or home base station gateway that transmits user plane data through one tunnel Information of home base station gateway transmits user plane data of all user equipment through one tunnel If it is information of the gateway, when subsequently initiating the location registration update procedure of another user equipment, the S-HNB does not initiate the optimized location registration update procedure, but initiates the conventional location registration update procedure performed through the core network. .

Step 1003: The S-HNB sends a RANAP location registration update request message to the home base station gateway through the RUA.

Step 1004: A conventional RANAP location registration update procedure performed through the core network is performed. This step is the same as the prior art, and its detailed technical description is omitted.

Sixth embodiment:

In this embodiment, the user equipment in case the S-HNB does not know whether the home base station gateway supports an optimized location registration update procedure or whether the home base station gateway transmits user plane data through one tunnel or two tunnels. When the mobile device moves under one home base station gateway or when a user equipment moves within one closed subscriber group and one home base station gateway, an optimized location registration procedure may be attempted first; If the location registration update procedure fails, the location registration update procedure is restarted according to the information obtained from the home base station gateway.

11 is a diagram showing a process in which the S-HNB according to the sixth embodiment of the present invention starts a location registration update procedure including the following steps.

Step 1101: The S-HNB sends an HNBRAP Location Registration Update Request message to the T-HNB.

The T-HNB sends an access control request message to the home base station gateway. This message includes user device identification.

Step 1103: The home base station gateway sends an access control response message to the T-HNB. If the home base station gateway does not support the optimized location registration update procedure, or if the home base station gateway transmits user plane data through one tunnel, this message indicates the information or user of the home base station gateway that does not support the optimized location registration update procedure. It contains information of a home base station gateway that transmits plane data through one tunnel. The information on the home base station gateway that transmits user plane data through one tunnel includes information on the home base station gateway that transmits user plane data of the user equipment through one tunnel or user plane data of all user devices. It may be information of a home base station gateway to transmit through.

Step 1104: The T-HNB sends a HNBRAP Location Registration Update Request Failure message to the S-HNB. This message includes the reason for the failure of the location registration update, the value of which is the home base station gateway which transmits information or user plane data through the one tunnel of the home base station gateway that does not support the optimized location registration procedure. It is set to information. The information on the home base station gateway that transmits user plane data through one tunnel includes information on the home base station gateway that transmits user plane data of the user equipment through one tunnel or user plane data of all user devices. It may be information of the home base station gateway.

The S-HNB stores the information of the home base station gateway which does not support the optimized location registration update procedure or the information of the home base station gateway that transmits user plane data through one tunnel, and is performed through the core network according to this information. The conventional location registration update procedure is started, i.e., step 1105 is performed. Home base station gateway that does not support optimized location registration update procedure or home base station gateway that transmits user plane data through one tunnel. If, then, when subsequently initiating the location registration update procedure of the other user equipment, the S-HNB does not initiate the optimized location registration update procedure, but initiates the conventional location registration update procedure performed through the core network.

Step 1105: The S-HNB sends a radio access network application part location registration update request message to the home base station gateway via the RUA.

Step 1106: A conventional RANAP location registration update procedure performed through the core network is performed. This step is the same as the prior art, and its detailed technical description is omitted.

The above-described embodiment obtains information of whether the home base station gateway supports an optimized location registration update procedure or information of whether the home base station gateway transmits user plane data through one tunnel or two tunnels, and according to the information, which location is used. Describe the specific method of the HNB that determines the use of the registration renewal procedure. In the following embodiments, a specific method of the HeNB will be described that obtains information of whether the home base station gateway supports X2 handover and determines which handover process to use according to the information.

Seventh embodiment:

In this embodiment, the home base station gateway notifies the HeNB of the information whether the home base station gateway supports X2 handover processing (ie, optimized handover processing) through the HeNB registration process. Here, the information on whether the home base station gateway supports the X2 handover process includes information on whether the home base station gateway supports the X2 protocol, or whether the home base station gateway transmits user plane data through one tunnel or two tunnels. It may include. In particular, when the home base station gateway supports the X2 protocol, or when the home base station gateway transmits user plane data through two tunnels, the home base station gateway supports the X2 handover process; Otherwise, the home base station gateway does not support X2 handover processing.

12 is a diagram illustrating a process of performing a notification through a HeNB registration process including the following steps by a home base station gateway (HeNB GW) according to the first embodiment of the present invention.

Step 1201: The HeNB sends a HeNB registration request message to the home base station gateway (HeNB GW).

Step 1202: The home base station gateway (HeNB GW) sends a HeNB registration response message to the HeNB. The HeNB registration response message includes information on whether the home base station gateway supports the X2 handover procedure, and in particular, this information indicates whether the home base station gateway (HeNB GW) supports the X2 protocol, or the home base station gateway (HeNB GW). ) May be information of whether user plane data is transmitted through one tunnel or two tunnels.

The HeNB stores the information received from the home base station gateway.

8th Embodiment:

In this embodiment, an OAM, such as a HeNB management system (HeMS), informs the HeNB about whether the home base station gateway (HeNB GW) supports the X2 handover procedure (ie, optimized handover processing). In this embodiment, the information of whether the home base station gateway (HeNB GW) supports the X2 handover procedure is the same as in the seventh embodiment.

FIG. 13 is a diagram showing a process in which a HeMS according to an eighth embodiment of the present invention performs notification through HeNB registration processing including the following steps.

Step 1301: The HeNB sends a HeNB registration request message to an OAM entity (HeMS, etc.).

Step 1302: The OAM entity sends a HeNB registration response message to the HeNB. The HeNB registration response message includes information on whether the home base station gateway (HeNB GW) supports X2 handover processing, and in particular, this information includes information on whether the home base station gateway supports the X2 protocol, or the home base station gateway user plane data. Information may be transmitted through one tunnel or two tunnels.

The HeNB stores the information received from the home base station gateway.

9th Embodiment

In this embodiment, the S-HeNB determines that the handover process is to be used for the user equipment according to the information obtained from the seventh or eighth embodiment. 14 is a diagram illustrating a process in which an S-HeNB initiates a handover process including the following steps according to a ninth embodiment of the present invention.

Step 1400: The S-HeNB determines to perform a handover procedure for the user equipment. The S-HeNB determines whether the optimized X2 handover procedure or the conventional S1 handover procedure is performed according to the stored information on whether the home base station gateway supports the X2 handover procedure. For example, the information stored by the S-HeNB is information of the home base station gateway supporting the X2 handover procedure, and the user equipment moves under one home base station gateway or the user equipment has one closed subscriber group and one home base station gateway. When moving within, the S-HeNB determines to perform an X2 handover procedure that continues to step 1401. Otherwise, the conventional S1 handover procedure is executed.

Step 1401: The S-HeNB executes X2 handover processing.

10th Embodiment:

In this embodiment, if the S-HeNB does not know whether the home base station gateway supports the X2 handover procedure, the user equipment moves under one home base station gateway (HeNB GW) or the user equipment is in one closed subscriber group. When moving at, the X2 handover procedure may be attempted first. 15 is a diagram illustrating a process of initiating a handover procedure by an S-HeNB including the following steps according to the tenth embodiment of the present invention:

Step 1501: The S-HeNB sends an X2AP handover request message to the home base station gateway (HeNB GW).

Step 1502: The home base station gateway (HeNB GW) has an X2 handover (eg, the HeNB does not support the X2 protocol and there is no X2 interface between the home base station gateway and the destination eNB, or source mobility management of the destination eNB and the user equipment). If no S1 interface exists between the entities), the handover fails, and the HeNB sends an X2AP handover request failure message to the S-HeNB. This message includes the reason for the failure, and the reason for the failure is that the home base station gateway does not support the X2 protocol, the X2 interface does not exist between the home base station gateway and the destination eNB, or between the source eNB and the source mobility management entity of the user equipment. There is no S1 interface, or the home base station gateway transmits user plane data through one tunnel. A home base station gateway that transmits user plane data through one tunnel may be for a user device or for all user devices.

The S-HeNB stores the information and decides to start a conventional handover procedure (such as S1 handover process) according to this information following step 1503.

If the home base station gateway does not support X2 handover or if the home base station gateway that transmits user plane data through one tunnel is for all user equipments, then the S-HeNB will initiate the handover procedure of another user equipment. Rather than initiating the X2 handover procedure, the conventional handover procedure (S1 processing, etc.) performed through the core network is disclosed.

If there is no X2 interface between the home base station gateway and the destination eNB, when subsequently initiating the handover process for the eNb for another user equipment, the S-HeNB does not initiate the X2 handover procedure, but also initiates the core network. It is to start the conventional handover process (S1 process, etc.) performed through.

If there is no S1 interface between the target eNB and the mobility management entity of the user equipment, when subsequently initiating the handover procedure of the other user equipment connected to the mobility management entity for the target eNB, the S-HeNB may also display the X2 handover procedure. Rather than initiating, it is to initiate a conventional handover procedure (such as S1 processing) performed through the core network.

Step 1503: The S-HeNB sends an S1AP Handover Request message to the home base station gateway.

Step 1504: A conventional S1 handover procedure is performed. This step is the same as the prior art, and its detailed technical description is omitted.

Eleventh Embodiment:

In this embodiment, if the S-HeNB does not know whether the home base station gateway (HeNB GW) supports X2 handover processing, the user equipment moves under one home base station gateway (HeNB GW) or the user equipment has one When moving within a closed subscriber group, an X2 handover procedure may be attempted first. FIG. 16 is a diagram illustrating a process in which an S-HeNB initiates a handover procedure including the following steps according to an eleventh embodiment of the present invention.

Step 1601: The S-HeNB sends an X2AP Handover Request message to the T-eNB.

Step 1602: The T-eNB sends an access control request message to the home base station gateway (HeNB GW).

Step 1603: The home base station gateway (HeNB GW) sends an access control response message to the T-eNB. If the home base station gateway (HeNB GW) does not support X2 handover (eg, the HeNB does not support the X2 protocol or there is no S1 interface between the destination eNB and the source mobility management entity of the user equipment), the access control response The message contains information on the HeNB that does not support X2 handover, such as information on the HeNB that does not support the X2 protocol or information on the absence of the S1 interface between the destination eNB and the source mobility management entity of the user equipment, or user plane data. It includes information of the home base station gateway transmitted through the three tunnels. A home base station gateway that transmits user plane data through one tunnel may be for a user device or for all user devices.

Step 1604: The T-eNB sends a handover request failure message to the S-HeNB. This message contains the reason for the failure, and the reason for the failure is that the home base station gateway does not support X2 handover, in particular the home base station gateway does not support the X2 protocol, or the S1 interface between the destination eNB and the source mobility management entity of the user equipment. Is not present.

The S-HeNB stores the information, and continues in step 1605 to initiate a conventional handover procedure (such as an S1 handover procedure) performed over the core network according to this information.

If the home base station gateway (HeNB GW) does not support X2 handovers or if the home base station gateway (HeNB GW), which transmits user plane data through one tunnel, is for all user devices, follow the handover procedure of the other user devices. When initiating, the S-HeNB does not initiate the X2 handover procedure, but also initiates the conventional handover procedure (S1 processing, etc.) performed through the core network.

If there is no S1 interface between the target eNB and the source of the user equipment, when subsequently initiating a handover procedure of another user equipment connected to the mobility management entity for the target eNB, the S-HeNB also initiates an X2 handover procedure. Rather, it initiates a conventional handover procedure (such as S1 processing) performed through the core network.

Step 1605: The S-HeNB sends an S1AP Handover Request message to the home base station gateway.

Step 1606: A conventional S1 handover procedure is executed. This step is the same as the prior art, and its detailed technical description is omitted.

Thus, the description of the solution of the present invention is completed.

In the above embodiment, only contents related to the solutions of the present invention are introduced, and some contents not directly related to the solutions of the present invention known to those skilled in the art and some contents related to the solutions of the present invention are described. It should be noted that not.

As can be seen from the above embodiment, in the method of determining the location registration update procedure according to the present invention, information of whether the home base station gateway supports the optimized location registration update procedure is obtained by the HNB, and the optimized location is obtained. Whether or not the registration update procedure is started may be determined according to the information, thereby effectively reducing the probability of failure of the location registration update and improving the location registration update efficiency. Further, in the method for determining the handover process according to the present invention, information on whether the home base station gateway supports the X2 handover process is obtained by the HeNB, and whether the X2 handover process is restarted is determined according to the information. The probability of handover failure can be effectively reduced and handover efficiency can be improved.

The above description is only for the preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims (20)

In the method of determining the location registration update procedure,
The home base station gateway (HNB GW) or operation, administration and maintenance (OAM) device, the home base station gateway (HNB GW), the information about whether the home base station gateway (HNB GW) supports the optimized location registration update procedure, the home base station ( HNB), and
Determining, by the HNB, a location registration update procedure to be executed in a user equipment (UE) according to information on whether the home base station gateway (HNB GW) supports the optimized location registration update procedure. Method comprising the.
The method of claim 1,
Information about whether the home base station gateway supports the optimized location registration update procedure,
Information about whether the home base station gateway transmits user plane data through one tunnel or two tunnels,
When the home base station gateway transmits the user plane data through one tunnel, the home base station gateway does not support the optimized location registration update procedure,
And when the home base station gateway transmits the user plane data through two tunnels, the home base station gateway supports the optimized location registration update procedure.
The method of claim 1,
Information of whether the home base station gateway supports the optimized location registration update procedure,
HNB Application Protocol (HNBAP) location registration update procedure, location registration update procedure of access layer application protocol (HNBRAP) of interface between HNB and HNB, or RNC (Radio Network Controller) and RNC Contains information about whether the protocol stack (Iur protocol) is supported
When the home base station gateway does not support HNBAP location registration update procedure, HNBRAP location registration update procedure, or Iur protocol, the home base station gateway does not support the optimized location registration update procedure,
When the home base station gateway supports an HNBAP location registration update procedure, an HNBRAP location registration update procedure, or an Iur protocol, the home base station gateway supports the optimized location registration update procedure.
The method of claim 1,
Information of whether the home base station gateway supports the optimized location registration update procedure,
Information about whether the home base station gateway transmits user plane data through one tunnel or two tunnels, or whether the home base station gateway supports the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol. Information,
When the home base station gateway transmits the user plane data through one tunnel or when the home base station gateway does not support the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol, the home base station gateway is configured to perform the optimization. Does not support the updated location registration procedure,
When the home base station gateway transmits the user plane data through two tunnels, or when the home base station gateway supports an HNBAP location registration update procedure, an HNBRAP location registration update procedure, or an Iur protocol, the home base station gateway is configured to perform the optimization. A method for supporting location registration updating.
5. The method according to any one of claims 1 to 4,
The location registration update procedure determined by the HNB of the user equipment according to the information of whether the home base station gateway supports the optimized location registration update procedure,
When the user equipment moves under control of one home base station gateway or moves within one closed subscriber group and one home base station gateway, if the home base station gateway supports the optimized location registration updating procedure, optimization of the user equipment Determining whether to perform the registered location registration update procedure.
5. The method according to any one of claims 1 to 4,
Before the home base station gateway notifies the HNB of information about whether the home base station gateway supports the optimized location registration update procedure,
When the user equipment moves under one home base station gateway or within one closed subscriber group and one home base station gateway, the HNB further includes initiating an optimized location registration update procedure for the user equipment. ,
When the optimized location registration update procedure fails, informing the HNB of the information about whether the home base station gateway supports the optimized location registration update procedure, the home base station gateway is configured to notify the HNB the optimized location registration. To notify the information about the home base station gateway that does not support the update procedure,
According to the information on whether the home base station gateway supports the optimized location registration update procedure, the location registration update procedure for the user equipment determined by the HNB is determined by the HNB to perform the optimized location registration update procedure. And determining to perform a location registration update procedure performed through the core network for the user equipment according to information of a home base station gateway not supported.
In the method for determining the handover process,
Notifying the HeNB by the home base station gateway (HeNB GW) or OAM whether the home base station gateway supports X2 handover;
Determining, by the HeNB, a handover procedure to be executed in a user equipment according to the information of whether the home base station gateway supports the X2 handover.
The method of claim 7, wherein
Information of whether the home base station gateway supports the X2 handover,
Information on whether the home base station gateway supports the X2 protocol, information on whether an X2 interface exists between the home base station gateway and the destination eNB, or a source mobility management entity (MME) of the destination eNB and the user equipment; Information about whether an S1 interface exists between
When the home base station gateway supports the X2 protocol and there is an X2 interface between the home base station gateway and the destination eNB or an S1 interface between the destination eNB and the mobility management entity of the user equipment, the home base station gateway is Support the X2 handover,
Otherwise, the home base station gateway does not support the X2 handover.
The method according to claim 7 or 8,
The handover process determined by the HeNB of the user equipment according to the information of whether the home base station gateway supports the X2 handover,
When the user equipment moves under one home base station gateway control or within one closed subscriber group, if the home base station gateway supports the X2 handover, determining to execute the X2 handover procedure of the user equipment. How to feature.
The method according to claim 7 or 8,
Before the home base station gateway notifies the HeNB of the information of whether the home base station gateway supports the X2 handover,
The HeNB further including starting an X2 handover process of the user equipment when the user equipment moves under one home base station gateway or within one closed subscriber group;
When the X2 handover process fails, notifying the HeNB of the information about whether the home base station gateway supports the X2 handover,
The home base station gateway notifies the HeNB of information about a home base station gateway that does not support the X2 handover,
The handover process for the user equipment determined by the HeNB according to the information on whether the home base station gateway supports the X2 handover is performed according to the information on the home base station gateway that does not support the X2 handover. And the HeNB determines to perform an S1 handover procedure for the user equipment.
A system for determining a location registration update procedure,
Home base station gateway (HNB GW) or operation, administration and maintenance (OAM) that notifies the home base station (HNB) of information about whether the home base station gateway (HNB GW) supports an optimized location registration update procedure. ) Your device,
And including the HNB to determine a location registration update procedure to be executed in a user equipment (UE) according to the information on whether the home base station gateway (HNB GW) supports the optimized location registration update procedure. Characterized in that the method.
The method of claim 11,
Information about whether the home base station gateway supports the optimized location registration update procedure,
Information about whether the home base station gateway transmits user plane data through one tunnel or two tunnels,
When the home base station gateway transmits the user plane data through one tunnel, the home base station gateway does not support the optimized location registration update procedure,
And when the home base station gateway transmits the user plane data through two tunnels, the home base station gateway supports the optimized location registration update procedure.
The method of claim 11,
Information of whether the home base station gateway supports the optimized location registration update procedure,
HNB Application Protocol (HNBAP) location registration update procedure, location registration update procedure of access layer application protocol (HNBRAP) of interface between HNB and HNB, or RNC (Radio Network Controller) and RNC Contains information about whether the protocol stack (Iur protocol) is supported
When the home base station gateway does not support HNBAP location registration update procedure, HNBRAP location registration update procedure, or Iur protocol, the home base station gateway does not support the optimized location registration update procedure,
And when the home base station gateway supports an HNBAP location registration update procedure, an HNBRAP location registration update procedure, or an Iur protocol, the home base station gateway supports the optimized location registration update procedure.
The method of claim 11,
Information of whether the home base station gateway supports the optimized location registration update procedure,
Information about whether the home base station gateway transmits user plane data through one tunnel or two tunnels, or whether the home base station gateway supports the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol. Information,
When the home base station gateway transmits the user plane data through one tunnel or when the home base station gateway does not support the HNBAP location registration update procedure, the HNBRAP location registration update procedure, or the Iur protocol, the home base station gateway is configured to perform the optimization. Does not support the updated location registration procedure,
When the home base station gateway transmits the user plane data through two tunnels, or when the home base station gateway supports an HNBAP location registration update procedure, an HNBRAP location registration update procedure, or an Iur protocol, the home base station gateway is configured to perform the optimization. A system characterized by supporting a location registration update procedure.
15. The method according to any one of claims 11 to 14,
The location registration update procedure determined by the HNB of the user equipment according to the information of whether the home base station gateway supports the optimized location registration update procedure,
When the user equipment moves under control of one home base station gateway or moves within one closed subscriber group and one home base station gateway, if the home base station gateway supports the optimized location registration updating procedure, optimization of the user equipment And determine to perform the registered location registration update procedure.
15. The method according to any one of claims 11 to 14,
Before the home base station gateway notifies the HNB of information about whether the home base station gateway supports the optimized location registration update procedure,
When the user equipment moves under one home base station gateway or within one closed subscriber group and one home base station gateway, the HNB initiates an optimized location registration update procedure for the user equipment,
When the optimized location registration update procedure fails, informing the HNB of the information about whether the home base station gateway supports the optimized location registration update procedure, the home base station gateway is configured to notify the HNB the optimized location registration. To notify the information about the home base station gateway that does not support the update procedure,
According to the information on whether the home base station gateway supports the optimized location registration update procedure, the location registration update procedure for the user equipment determined by the HNB is determined by the HNB to perform the optimized location registration update procedure. And determine to perform a location registration update procedure performed through the core network for the user equipment according to information of a home base station gateway not supported.
In the method for determining the handover process,
Notifying the HeNB by the home base station gateway (HeNB GW) or OAM whether the home base station gateway supports X2 handover;
Determining, by the HeNB, a handover procedure to be executed in a user equipment according to the information of whether the home base station gateway supports the X2 handover.
The method of claim 17,
Information of whether the home base station gateway supports the X2 handover,
Information on whether the home base station gateway supports the X2 protocol, information on whether an X2 interface exists between the home base station gateway and the destination eNB, or a source mobility management entity (MME) of the destination eNB and the user equipment; Information about whether an S1 interface exists between
When the home base station gateway supports the X2 protocol and there is an X2 interface between the home base station gateway and the destination eNB or an S1 interface between the destination eNB and the mobility management entity of the user equipment, the home base station gateway is Support the X2 handover,
Otherwise, the home base station gateway does not support the X2 handover.
The method of claim 17 or 18,
The handover process determined by the HeNB of the user equipment according to the information of whether the home base station gateway supports the X2 handover,
When the user equipment moves under one home base station gateway control or within one closed subscriber group, if the home base station gateway supports the X2 handover, determining to execute the X2 handover procedure of the user equipment. System characterized.
The method of claim 17 or 18,
Before the home base station gateway notifies the HeNB of the information of whether the home base station gateway supports the X2 handover,
The HeNB further including starting an X2 handover process of the user equipment when the user equipment moves under one home base station gateway or within one closed subscriber group;
When the X2 handover process fails, notifying the HeNB of the information about whether the home base station gateway supports the X2 handover,
The home base station gateway notifies the HeNB of information about a home base station gateway that does not support the X2 handover,
The handover process for the user equipment determined by the HeNB according to the information on whether the home base station gateway supports the X2 handover is performed according to the information on the home base station gateway that does not support the X2 handover. The HeNB determines to perform an S1 handover procedure for the user equipment.

Images