JP2017531398A - Handover method, system, home base station gateway, and computer storage medium - Google Patents

Abstract

The present invention discloses a handover method, in which a home base station gateway (HeNB GW) receives a handover request message, and acquires a handover identifier included in the handover request message. Transmitting the handover request message to a target base station based on the handover identifier. The present invention also discloses a home base station gateway, a handover system and a computer storage medium. [Selection] Figure 1

Description

  TECHNICAL FIELD The present invention relates to a handover technology for a radio communication network of a fourth generation mobile communication system, and more particularly, a handover method, system, home base station gateway, and computer for long term evolution (LTE) macro / micro ad hoc networks. The present invention relates to a storage medium.

  The 3rd generation partnership project (3GPP: The 3rd Generation Partnership Project) in the wireless communication field is the largest research project established in recent 3GPP, and LTE is a technology that evolves from 3G to 4G. In the current wireless communication area, the need for a distributed home base station network increases on the basis of a conventional macro base station planning network.

  In an LTE macro / micro / ad-hoc network, a base station cannot sense whether a neighboring cell is a macro base station (eNB: Macro eNB) or a home base station (HeNB: Home eNB). When initiating a handover request to an adjacent cell, the base station transmitting the handover request message is normally considered to have the same type as the base station of the adjacent cell and the base station transmitting the handover request message. Fill in the handover request message according to the format of its own identifier (ID: Identity), and if the type of the base station of the neighboring cell and the base station that transmits the handover request message are not the same, The content of the over request message is incorrect. There is a problem in that the handover fails and the compatibility of the LTE macro / micro / ad-hoc network with the HeNB is deteriorated.

  In order to solve the conventional technical problems, embodiments of the present invention provide a handover method, a system, a home base station gateway, and a computer storage medium.

An embodiment of the present invention provides a handover method, which includes:
A home base station gateway (HeNB GW) receives a handover request message;
Obtaining a handover identifier included in the handover request message;
Based on the handover identifier, transmitting the handover request message to a target base station;
including.

In the above technical solution, the handover request message is transmitted from the eNB,
Obtaining a handover identifier included in the handover request message;
Extracting a container from the handover request message;
Decoding the Container to obtain a target cell ID;
including.

  In the above technical solution, based on the handover identifier, transmitting the handover request message to a target base station is based on the target cell ID, and the handover request message has the same identifier ID as the target cell ID. Including transmitting to a target base station.

In the above technical solution, before the HeNB GW receives the handover request message, the method further includes:
The eNB fills in the target base station identifier (Target ID) according to the format of the macro base station identifier eNB ID, and transmits a handover request message including the Target ID to the mobility management entity (MME).
The MME finds a HeNB GW having the same virtual macro base station identifier (V-eNB ID: Virtual eNB ID) as the Target ID, transmits a handover request message to the HeNB GW, and the V-eNB ID is the HeNB. An identifier configured in the GW;
including.

  In the above technical solution, the handover request message is transmitted from a home base station HeNB, and acquiring a handover identifier included in the handover request message acquires a Target ID included in the handover request message. Including that.

In the above technical solution, based on the handover identifier, transmitting the handover request message to a target base station,
Converting the Target ID from the format of the home base station identifier (HeNB ID) to the format of the eNB ID, and setting it as the converted Target ID;
A handover request message including the converted Target ID so that the MME acquires an eNB ID from the converted Target ID and transmits the handover request message to a target base station having the same ID as the eNB ID. Sending to the MME;
including.

  In the above technical solution, before the HeNB GW receives a handover request message, the method further includes a handover request in which the HeNB fills in the Target ID according to a HeNB ID format and includes the Target ID. Sending a message to the HeNB GW.

An embodiment of the present invention provides a HeNB GW, wherein the HeNB GW
A receiving module configured to receive a handover request message;
An acquisition module configured to acquire a handover identifier included in the handover request message;
A transmission module configured to transmit the handover request message to a target base station based on the handover identifier.

In the above technical solution, the handover request message is transmitted from the eNB,
The acquisition module is
The container is extracted from the handover request message, decoded to the container, and a target cell ID is obtained.

  In the above technical solution, the transmission module is configured to transmit the handover request message to a target base station having the same ID as the target cell ID based on the target cell ID.

  In the above technical solution, the handover request message is transmitted from the HeNB, and the acquisition module is configured to acquire a Target ID included in the handover request message.

In the above technical solution, the transmission module includes:
The Target ID is converted from the HeNB ID format to the eNB ID format to obtain the converted Target ID,
A handover request including the converted Target ID so that the MME obtains an eNB ID from the converted Target ID and transmits the handover request message to the target base station having the same ID as the eNB ID. A message is configured to be sent to the MME.

Embodiments of the present invention further provide a handover system, the system comprising:
Based on the format of the eNB ID, the eNB configured to fill in the Target ID and send a handover request message including the Target ID to the MME;
An MME configured to find a HeNB GW having the same V-eNB ID as the Target ID and to send a handover request message to the HeNB GW;
The Container is extracted from the handover request message, decoding is performed on the Container, the target cell ID is obtained, and the handover request message has the same ID as the target cell ID based on the target cell ID. A HeNB GW configured to transmit to the HeNB;
And a HeNB configured to receive the handover request message.

Embodiments of the present invention further provide a handover system, the system comprising:
A HeNB configured to fill in a Target ID according to the format of the HeNB ID and to transmit a handover request message including the Target ID to the HeNB GW;
A HeNB GW configured to convert the Target ID from a HeNB ID format to an eNB ID format to obtain a converted Target ID, and to transmit a handover request message including the converted Target ID to the MME; ,
An MME configured to obtain an eNB ID from the converted Target ID and transmit the handover request message to an eNB having the same ID as the eNB ID;
An eNB configured to receive the handover request message.

  An embodiment of the present invention further provides a computer storage medium, which includes an instruction set, and when executing the instruction set, causes at least one processor to execute the above handover method.

  In the handover method, system, HeNB GW and computer storage medium provided in the embodiments of the present invention, the HeNB GW receives a handover request message and obtains a handover identifier included in the handover request message. The handover request message is transmitted to the target base station based on the handover identifier. Accordingly, the base station that transmits the handover request message can fill in the handover request message according to the format of its own ID and transmit the handover request message to the target base station. A handover function of a micro ad hoc network is realized, so that the embodiment of the present invention improves the compatibility of LTE macro micro ad hoc network to HeNB.

3 is a flowchart of a handover method in an embodiment of the present invention. It is a figure which shows the structure of HeNB GW in the Example of this invention. It is a figure which shows the structure of the handover system in Example 1 of this invention. It is a figure which shows the structure of the handover system in Example 2 of this invention.

  In the drawings (not necessarily drawn to scale), similar drawing symbols may depict similar components in different drawings. Similar drawing symbols with different alphabetic suffixes may indicate different examples of similar parts. The drawings illustrate the embodiments described in the present invention by way of example and not by way of limitation.

  In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the drawings.

  In each embodiment of the present invention, the HeNB GW receives a handover request message, acquires a handover identifier included in the handover request message, and sends the handover request message to a target base station based on the handover identifier. Send to.

  FIG. 1 is a flowchart of a handover method in the embodiment of the present invention. As shown in FIG. 1, the handover method in the embodiment of the present invention includes the following steps.

  In step 101, the HeNB GW receives a handover request message.

  Here, the handover request message in which the HeNB GW is received may be transmitted from the eNB or may be transmitted from the HeNB.

  In steps 102 to 103, a handover identifier included in the handover request message is acquired, and the handover request message is transmitted to a target base station based on the handover identifier.

  Here, when the handover request message is transmitted from the eNB, acquiring a handover identifier included in the handover request message extracts a Container from the handover request message, and transmits the handover identifier to the Container Decoding and obtaining a target cell ID, and accordingly transmitting the handover request message to a target base station based on the handover identifier based on the target cell ID Transmitting a request message to a target base station having the same ID as the target cell ID.

In addition, before the step of receiving the handover request message by the HeNB GW, the method further includes configuring at least one V-eNB ID in the HeNB GW, specifically, a format of the V-eNB ID. May be 20 bits, and the home base station identifier (HeNB ID) used by the HeNB needs to satisfy the following conditions. The upper 20 bits of the HeNB ID match any one V-eNB ID used in the HeNB GW, the HeNB ID is 28 bits, there is a difference between the V-eNB ID and 8 bits, and the HeNB GW has 1 when configuring one of V-eNB ID, it is possible to HeNB GW manages ^{two eight} HeNB, in fact applications, there are thousands more HeNB to macro micro ad hoc network, therefore, thousands In order to manage the above HeNB, it is necessary to extend the HeNB GW. In other words, a plurality of V-eNB IDs are configured in the HeNB GW, and at the same time, the V-eNB ID is recorded in the neighboring cell information of the eNB The

  When handover is required, the eNB fills in the Target ID based on the format of the macro base station identifier eNB ID, sends a handover request message including the Target ID to the MME, and the MME and the Target ID A HeNB GW having the same V-eNB ID is found, and a handover request message is transmitted to the HeNB GW.

  In actual application, the core network includes MME and HeNB GW, the access network includes eNB and HeNB, and the core network and access network are connected and communicated with each other via S1 interface, and MME, HeNB GW, eNB And after starting and operating normally in each network element called HeNB, S1 connection is established between them. First, at least one V-eNB ID is configured in the HeNB GW, the V-eNB ID is configured based on the format of the eNB ID, and the HeNB GW and the MME establish the S1 connection. It is necessary to transmit a connection establishment request, and the connection establishment request message includes the HeNB GW ID, that is, the V-eNB ID. Next, when the HeNB and the HeNB GW establish an S1 connection, the connection establishment request message includes the HeNB ID, and the HeNB ID is in the HeNB ID format. Here, the HeNB ID in which the HeNB is used needs to satisfy the condition that the upper 20 bits of the HeNB ID match any one V-eNB ID used in the HeNB GW. Finally, after establishing an S1 connection between each network element, it becomes possible to transmit signaling, eg, a handover request message, etc. over the S1 link.

  Here, in the LTE protocol, the format of eNB ID is 20 bits, and the format of HeNB ID is 28 bits.

  Specifically, when starting handover from the eNB to the HeNB, first, the eNB fills in the Target ID based on the format of the eNB ID, that is, 20 bits, and transmits a handover request message including the Target ID to the MME. The handover request message further includes other information and is specifically written in accordance with the LTE protocol. For example, “Source to Target Transparent Container” is included. However, the MME does not decode the Container. In addition, after the MME obtains the Target ID in the handover request, searches for the HeNB GW based on the Target ID, finds the HeNB GW that is the same as the V-eNB ID and the Target ID, and then sends the handover request message. Send to HeNB GW. At this time, the HeNB GW needs to perform decoding on the Container in the handover request message, and the Container is defined in the LTE protocol. Specifically, “The Source eNB to target eNB Transient Container is an information element. is produced by the source eNB and is transmitted to the target eNB.For inter-system handovers to E-UTRAN, the Container is transmitted to the target. target eNB "(the transmission container from the source base station to the target base station is an information element which is created by the source base station and transmitted to the target base station, and is handed over between the systems. For global cells, the container is transmitted from the external handover source to the target base station), ie, for LTE system handover, the target cell ID is the E-UTRAN CGI (Evolved Universal). Terrestrial Radio Access Network Cell Global Identifier), in other words, the HeNB GW performs decoding for the Container. Is a target cell ID was collected using. Note that the LTE protocol stipulates that there can be only one HeNB cell, and thus the target cell ID corresponds to the HeNB ID of the HeNB. Finally, a handover request message is transmitted to the HeNB having the same ID as the HeNB ID.

  Here, when the handover request message is transmitted from the HeNB, acquiring a handover identifier included in the handover request message includes acquiring a Target ID included in the handover request message; Accordingly, based on the handover identifier, transmitting the handover request message to the target base station converts the Target ID from the HeNB ID format to the eNB ID format and sets it as the converted Target ID. And the converted Target ID is such that the MME obtains the eNB ID from the converted Target ID and sends the handover request message to the target base station having the same ID as the eNB ID. Comprising transmitting a Murrell handover request message to the MME, the.

  In addition, before the step in which the HeNB GW receives a handover request message, the method further includes a handover request message in which the HeNB fills in the Target ID based on a HeNB ID format and includes the Target ID. To the HeNB GW.

  Specifically, when each network element of MME, HeNB GW, eNB, and HeNB establishes an S1 connection, when the HeNB starts handover to the eNB, first, the HeNB is based on the HeNB ID format, that is, 28 bits. , The Target ID is entered, and it is determined in the LTE protocol that the target cell ID is 28 bits, the Target ID here corresponds to the target cell ID, and a handover request message including the Target ID is transmitted to the HeNB GW. Next, the HeNB GW converts the Target ID from the HeNB ID format to the eNB ID format to obtain the converted Target ID, and the conversion from the HeNB ID format to the eNB ID format is the above V -According to the definition of eNB ID, the V-eNB ID is 20 bits, and the upper 20 bits of the Target ID in the HeNB ID format are extracted and used as the converted Target ID. At this time, the converted Target ID is 20 bits, and the HeNB GW transmits a handover request message including the converted Target ID to the MME. Finally, the MME acquires the eNB ID from the converted Target ID. Since the eNB ID is 20 bits, the Target ID is equal to the eNB ID, and a handover request message is transmitted to the eNB having the same ID as the eNB ID.

  As described above, the handover method according to the embodiment of the present invention is a handover method for an LTE macro / micro / ad hoc network.

  In an embodiment of the present invention, the HeNB GW first receives a handover request message, then acquires a handover identifier included in the handover request message, and finally, based on the handover identifier, the handover eNB GW acquires the handover identifier. By transmitting the request message to the target base station, the base station that transmits the handover request message can fill in the handover request message according to its own ID format and transmit the handover request message to the target base station. In addition, a handover function of the LTE macro / micro / ad-hoc network is realized, so that the embodiment of the present invention improves the compatibility of the LTE macro / micro / ad-hoc network to the HeNB.

FIG. 2 is a diagram illustrating the configuration of the HeNB GW of the LTE macro / micro ad hoc network according to the embodiment of the present invention. As illustrated in FIG. 2, the LTE macro / micro ad hoc network according to the embodiment of the present invention is illustrated. The configuration of the HeNB GW includes a reception module 201, an acquisition module 202, and a transmission module 203. here,
The receiving module 201 is configured to receive a handover request message.

  The acquisition module 202 is configured to acquire a handover identifier included in the handover request message.

  The transmission module 203 is configured to transmit the handover request message to a target base station based on the handover identifier.

In one embodiment, the handover request message is sent from the eNB, and the acquisition module 202 specifically specifies:
The container is extracted from the handover request message, decoded to the container, and a target cell ID is obtained.

  Accordingly, the transmission module 203 is specifically configured to transmit the handover request message to a target base station having the same ID as the target cell ID based on the target cell ID.

  In one embodiment, the handover request message is transmitted from the HeNB, and the acquisition module 202 is specifically configured to acquire a Target ID included in the handover request message.

Accordingly, the transmission module 203 specifically:
The Target ID is converted from the HeNB ID format to the eNB ID format to obtain the converted Target ID,
A handover request including the converted Target ID so that the MME obtains an eNB ID from the converted Target ID and transmits the handover request message to the target base station having the same ID as the eNB ID. A message is configured to be sent to the MME.

  In actual application, the functions of the reception module 201, the acquisition module 202 and the transmission module 203 are the central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or programmable gate array in the HeNB GW ( (FPGA).

FIG. 3 is a diagram illustrating the configuration of the handover system according to the first embodiment of the present invention. As illustrated in FIG. 3, the configuration of the handover system according to the first embodiment of the present invention includes an eNB, an MME, a HeNB GW, and Includes HeNB. here,
The eNB is configured to fill in the Target ID based on the format of the eNB ID and transmit a handover request message including the Target ID to the MME.

  The MME is configured to find a HeNB GW having the same V-eNB ID as the Target ID and send a handover request message to the HeNB GW.

  The HeNB GW extracts a Container from the handover request message, performs decoding on the Container, obtains a target cell ID, and based on the target cell ID, the HeNB GW sends the handover request message to the target cell ID. Configured to transmit to the HeNB having the same ID.

  The HeNB is configured to receive the handover request message.

  Here, the handover system shown in FIG. 3 is a handover system of an LTE macro / micro / ad hoc network, and implements a handover request from the eNB to the HeNB.

  FIG. 4 is a diagram illustrating a configuration of a handover system according to the second embodiment of the present invention. As illustrated in FIG. 4, the configuration of the handover system according to the second embodiment of the present invention includes HeNB, HeNB GW, MME, and Includes eNB.

  The HeNB is configured to fill in the Target ID based on the HeNB ID format and transmit a handover request message including the Target ID to the HeNB GW.

  The HeNB GW converts the Target ID from the HeNB ID format to the eNB ID format to obtain a converted Target ID, and transmits a handover request message including the converted Target ID to the MME. Composed.

  The MME is configured to obtain an eNB ID from the converted Target ID and to transmit the handover request message to an eNB having the same ID as the eNB ID.

  The eNB is configured to receive the handover request message.

  Here, the handover system shown in FIG. 4 is an LTE macro / micro / ad hoc network handover system, and implements a handover request from the HeNB to the eNB.

  It will be apparent to those skilled in the art that embodiments of the present invention can be provided as a method, system, or computer product. Accordingly, the present invention can be implemented in the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware. The present invention is also applicable to one or more storage media (including but not limited to a magnetic disk device and an optical storage device) that can be used in a computer including program codes that can be used in the computer. The form of the implemented computer program product may be adopted.

  The present invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It should be understood that computer program instructions implement each flow and / or block in the flowchart and / or block diagram, and the association with the flow and / or block in the flowchart and / or block diagram. These computer program instructions are provided to a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device processor to create a device that is executed by the computer or other programmable data processing device processor. Through the instructions, it is possible to generate a device for implementing the function specified in one or more flows of the flowchart and / or one block or blocks of the block diagram.

  These computer program instructions may be stored in a computer readable storage device that causes a computer or other programmable data processing device to operate in a particular manner, and are stored in the computer readable storage device. The instruction device generates a product including the instruction device, and the instruction device realizes a function specified by one or more flows in the flowchart and / or one block or a plurality of blocks in the block diagram.

  These computer program instructions may be installed on a computer or other programmable data processing device and cause a series of operations on the computer or other programmable data processing device to generate a computer-implemented process. The instructions that cause a step to be executed and thereby executed on a computer or other programmable data processing device are specified in one or more flows in the flowchart and / or in one or more blocks in the block diagram. Steps for realizing the functions are provided.

  Based on the above, an embodiment of the present invention provides a computer storage medium, which includes an instruction set, and causes at least one processor to execute the handover method when executing the instructions.

  The above is a preferred embodiment of the present invention, but does not limit the scope of the present invention.

Claims (15)

A handover method comprising:
The home base station gateway HeNB GW receives the handover request message;
Obtaining a handover identifier included in the handover request message;
Based on the handover identifier, transmitting the handover request message to a target base station;
Said method. The handover request message is transmitted from the macro base station eNB;
Obtaining a handover identifier included in the handover request message;
Extracting a container Container from the handover request message;
Decoding the Container to obtain a target cell ID;
The method of claim 1 comprising:   Based on the handover identifier, transmitting the handover request message to the target base station transmits the handover request message to the target base station having the same identifier ID as the target cell ID based on the target cell ID. 3. The method of claim 2, comprising: Before the HeNB GW receives the handover request message, the method further comprises:
the eNB fills in the target base station identifier Target ID according to the format of the macro base station identifier eNB ID, and sends a handover request message including the Target ID to the mobility management entity MME;
The MME finds a HeNB GW having the same virtual macro base station identifier V-eNB ID as the Target ID, transmits a handover request message to the HeNB GW, and the V-eNB ID is configured in the HeNB GW. And
The method according to claim 2 or 3, comprising: The handover request message is transmitted from the base station HeNB;
The method according to claim 1, wherein obtaining a handover identifier included in the handover request message includes obtaining a Target ID included in the handover request message. Based on the handover identifier, sending the handover request message to a target base station,
Converting the Target ID from the format of the home base station identifier HeNB ID to the format of the eNB ID, and converting it to the converted Target ID;
A handover request message including the converted Target ID so that the MME acquires an eNB ID from the converted Target ID and transmits the handover request message to a target base station having the same ID as the eNB ID. Sending to the MME;
The method of claim 5 comprising:   Before the HeNB GW receives the handover request message, the method further includes filling the Target ID according to the HeNB ID format and sending the handover request message including the Target ID to the HeNB GW. The method according to claim 5 or 6, comprising transmitting. A home base station gateway HeNB GW,
A receiving module configured to receive a handover request message;
An acquisition module configured to acquire a handover identifier included in the handover request message;
A transmission module configured to transmit the handover request message to a target base station based on the handover identifier;
The HeNB GW. The handover request message is transmitted from the eNB;
The acquisition module is
The home base station gateway according to claim 8, wherein the home base station gateway is configured to extract a container from the handover request message, perform decoding on the container, and obtain a target cell ID. The home base station gateway according to claim 9, wherein the transmission module is configured to transmit the handover request message to a target base station having the same ID as the target cell ID based on the target cell ID. The handover request message is transmitted from the HeNB;
The home base station gateway according to claim 8, wherein the acquisition module is configured to acquire a Target ID included in the handover request message. The transmission module includes:
The Target ID is converted from the HeNB ID format to the eNB ID format to obtain the converted Target ID, the MME obtains the eNB ID from the converted Target ID, and the handover request message is sent to the eNB ID. 12. The home base station gateway according to claim 11, configured to transmit a handover request message including the converted Target ID to the MME so as to transmit to a target base station having the same ID. A handover system,
Based on the format of the eNB ID, the eNB configured to fill in the Target ID and send a handover request message including the Target ID to the MME;
An MME configured to find a HeNB GW having the same V-eNB ID as the Target ID and to send a handover request message to the HeNB GW;
The Container is extracted from the handover request message, decoding is performed on the Container, the target cell ID is obtained, and the handover request message has the same ID as the target cell ID based on the target cell ID. A HeNB GW configured to transmit to the HeNB;
A HeNB configured to receive the handover request message;
Including the system. A handover system,
A HeNB configured to fill in a Target ID according to the format of the HeNB ID and to transmit a handover request message including the Target ID to the HeNB GW;
A HeNB GW configured to convert the Target ID from a HeNB ID format to an eNB ID format to obtain a converted Target ID, and to transmit a handover request message including the converted Target ID to the MME; ,
An MME configured to obtain an eNB ID from the converted Target ID and transmit the handover request message to an eNB having the same ID as the eNB ID;
An eNB configured to receive the handover request message;
Including the system. A computer storage medium,
7. The computer storage medium comprising an instruction set, wherein when executing the instruction set, at least one processor executes the method according to any one of claims 1-3, 5, and 6.