WO2012126323A1

WO2012126323A1 - Method and system for home nodeb to learn neighbour information

Info

Publication number: WO2012126323A1
Application number: PCT/CN2012/072258
Authority: WO
Inventors: 刘磊; 奚进; 韩立锋
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-03-24
Filing date: 2012-03-13
Publication date: 2012-09-27
Also published as: CN102695158B; CN102695158A

Abstract

A method for a home NodeB to learn neighbour information. The method includes: a superior access node of a home NodeB learns that there is a home NodeB closed, and sends a first message to a neighbour home NodeB of the closed home NodeB; and the neighbour home NodeB learns the information about closure of the home NodeB according to the first message. A system for a home NodeB to learn neighbour information. The system includes a home NodeB, a superior access node of the home NodeB, and a neighbour home NodeB of the home NodeB.

Description

Method and system for knowing neighboring area information by home base station

Technical field

The present invention relates to wireless cellular communication technologies, and in particular, to a method and system for a home base station to learn neighboring cell information.

Background technique

The home base station is a small, low-power base station deployed in indoor locations such as homes and offices. The main role of the home base station is to provide users with higher service rates and lower the cost of using high-speed services, while at the same time making up for the deficiencies of existing distributed cellular wireless communication systems. The advantages of a home base station are affordability, convenience, low power output, plug and play, and more.

The home base station user is connected to the core network through a home base station access network (Home (e) NodeB Access Network, H(e)NB AN ) (as shown in FIG. 1 and FIG. 2), where H(e)NB AN It is composed of a home base station (Home (e)NodeB, H(e)NB) and a home base station gateway (Home (e)NodeB Gateway, H(e)NB GW). The main functions performed by the H(e)NB GW are: processing the registration and access control of the home base station, verifying the home base station, and exchanging data of the core network and the home base station. In addition, the H(e)MS system is a home base station management system, performs operation and maintenance management on the home base station, configures and controls the home base station according to the operator's requirements, and mostly implements a configuration management function for the H(e)NB, including location information. Verify and configure parameters for H(e)NB, mainly designing parameters to the core network (CN) level, parameter configuration on the radio access network (RAN) side, and parameter configuration of radio frequency (RF, Radio Frequency). For an evolved home base station (HeNB) system, the HeNB may directly connect to the mobility management entity (MME) without going through the HeNB GW. Summary of the invention

The coverage of the home base station is small, and the number of service objects is small and relatively fixed. Compared with the macro base station, the frequency of the home base station is relatively high. When the home base station is shut down, its neighboring access network element does not know, and the home base station in the neighboring area may also initiate various services and processes to the home base station. On the one hand, these services and processes may fail, on the other hand, the network The invalid load in the will increase. Therefore, you need to have one Ways to solve the above problems.

The present invention provides a method and system for a home base station to obtain neighboring cell information, to solve a service and process failure caused by a home base station in a neighboring cell to initiate a variety of services and processes to the home base station when the home base station is shut down, and in the network. The invalid load increases the problem.

The present invention provides a method for a home base station to obtain neighboring cell information, the method comprising: the upper-level access node of the home base station knowing that the home base station is closed, and transmitting the first message to the neighboring home base station of the closed home base station;

The neighboring home base station learns the closing information of the home base station according to the first message. Preferably, the foregoing method may have the following feature: The first message sent by the upper-level access node to the neighboring home base station of the home base station carries the shutdown information of the home base station.

Preferably, the foregoing method may further have the following features: before the upper-level access node of the home base station learns that the home base station is closed, the method further includes:

After the neighboring cell home base station is turned on, the request message for acquiring the neighboring cell information is sent to the upper-level access node;

After receiving the foregoing request message, the upper-level access node sends a response message to the neighboring home base station in a one-time or periodic manner, and carries the neighboring cell information of the neighboring home base station, where the neighboring cell information includes the neighboring home base station that is turned on. list of;

The neighboring home base station saves or updates the neighboring cell information of the home base station.

Preferably, the foregoing method may further have the following feature: the first message sent by the upper-level access node to the neighboring cell home base station carries the neighboring cell information of the neighboring home base station;

The neighboring home base station obtains the closing information of the home base station according to the foregoing first message, and includes: the neighboring area information of the home base station carried in the first message received by the neighboring home base station, and the neighbor of the home base station saved before. The area information is compared to obtain the closing information of the above-mentioned home base station.

Preferably, the above method may also have the following characteristics:

The first message is an S1 signaling message, and the upper access node is a home base station gateway or a mobility management entity; or

The first message is an iuh signaling message, and the upper access node is a home base station gateway. Preferably, the foregoing method may further have the following features: after the neighboring home base station learns the closing information of the home base station, the method further includes:

The neighboring home base station terminates the service with the home base station.

The present invention provides a system for a home base station to obtain neighboring cell information. The system includes a home base station, a superior access node of the home base station, and a neighboring home base station of the home base station, where: the upper access node is configured to: The home base station is turned off, and the first message is sent to the neighboring home base station of the closed home base station;

The neighboring home base station is configured to: obtain the closing information of the home base station according to the first message.

Preferably, the foregoing system may have the following feature: The first message sent by the upper-level access node to the neighboring home base station of the home base station carries the shutdown information of the home base station.

Preferably, the above system may also have the following features:

The neighboring home base station is further configured to: after the opening, send a request message for acquiring the neighboring cell information to the upper-level access node; and save or update the neighboring cell of the home base station carried in the response message sent by the upper-level access node Information

The foregoing upper-level access node is further configured to: after receiving the request message sent by the neighboring home base station, send a response message to the neighboring home base station in a one-time or periodic manner, and carry the neighboring area information of the neighboring home base station, The neighbor information includes a list of neighboring home base stations that are turned on.

Preferably, the foregoing system may further have the following feature: the first message sent by the upper-level access node to the neighboring cell home base station carries the neighboring cell information of the neighboring home base station;

The neighboring home base station is configured to: compare the neighbor information of the home base station carried in the first message with the previously stored neighbor information of the home base station, and obtain the closing information of the home base station.

Preferably, the above system may also have the following features:

The first message is an iuh signaling message, and the upper access node is a home base station gateway. Preferably, the above system may also have the following features:

The neighboring home base station is further configured to: after learning the closing information of the home base station, terminate the service with the home base station.

The method and system for the neighboring base station to obtain the neighboring area information can be obtained by the neighboring area H(e)NB when the H(e)NB is closed, and then the H(e)NB can be terminated in time. The process can also cancel the process that is about to be initiated to the H(e)NB, thereby reducing the invalid network load. BRIEF abstract

FIG. 1 is a structural diagram of a network of an existing HeNB;

2 is a structural diagram of an existing HNB network;

3 is a signaling flowchart of notifying a neighboring HeNB of a closed HeNB by S1 signaling in a Long Term Evolution (LTE) system according to an embodiment of the present invention;

FIG. 4 is a signaling flowchart of requesting, by the S1 signaling, the LTE system to acquire neighboring cell information once or periodically according to an embodiment of the present invention;

5 is a signaling flowchart of notifying a neighboring HNB of a closed HNB by iuh signaling in a Universal Mobile Telecommunications System (UMTS) system according to an embodiment of the present invention;

6 is a signaling flowchart of requesting, by the IUh signaling, a one-time or periodic acquisition of neighboring area information in the UMTS system according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a system for a home base station to learn neighbor cell information according to an embodiment of the present invention. Preferred embodiment of the invention

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

The present invention provides a method for a home base station to obtain neighboring cell information. The method includes: the upper-level access node of the home base station learns that the home base station is closed, and sends the first message to the neighboring home base station of the closed home base station;

The neighboring home base station learns the closing information of the home base station according to the first message. After the neighboring home base station learns the closing information of the home base station, the neighboring home The base station terminates service with the home base station.

When the H(e)NB is shut down, the upper access node needs to obtain the information change. In order to make the description of the present invention clearer, the present invention will be described in detail below using the following examples.

Embodiment 1

This embodiment describes that in the LTE system, when the HeNB is turned off, the information is notified to the neighboring cell HeNB of the HeNB, and the inventive point focuses on step 102. In this embodiment, the closed HeNB and the HeNB of the HeNB may be directly connected to the MME, or may be connected to the MME through the HeNB GW. As shown in FIG. 3, the process includes:

Step 101: The HeNB is enabled, and the HeNB sends an S1 message to the MME to notify the HeNB of the location information. If the HeNB is connected to the MME through the HeNB GW, the HeNB sends the SI message to the HeNB GW, where the SI message includes the identifier of the HeNB. The HeNB GW determines the neighbor relationship of the HeNB according to the location information of the HeNB, that is, which other HeNBs exist in the neighboring area of the HeNB, and the location information of the HeNB (such as the geographic coordinates, the height direction).

Step 102: The HeNB is shut down, and the MME discovers an underlying flow control transmission protocol with the HeNB.

The (SCTP) connection is disconnected, thereby determining that the HeNB is unreachable, releasing resources related to the HeNB, such as an S1 connection, and if the HeNB is connected to the MME through the HeNB GW, the HeNB GW releases resources related to the HeNB;

Step 103: If the neighboring cell HeNB is directly connected to the MME, the MME sends an S1 signaling message to the neighboring cell HeNB to notify the neighboring cell HeNB that the HeNB has been closed. If the neighboring cell HeNB is connected to the MME through the HeNB GW, the HeNB GW The neighboring area HeNB sends the SI signaling message, where the S1 message includes the identifier of the closed HeNB and the HeNB off information.

Embodiment 2

In this embodiment, the HeNB requests its neighbor information from the MME or the HeNB GW in the LTE system. The MME may respond to the neighbor information requested by the HeNB when receiving the request, or may periodically respond to the HeNB with the neighbor information. . In this way, when one HeNB is turned off, its neighboring cell HeNB can obtain the information that the HeNB is turned off, and the inventive point focuses on steps 202 and 203. In this embodiment, the closed HeNB and the neighboring cell HeNB of the HeNB may directly connect to the MME. The process can be connected to the MME through the HeNB GW. As shown in FIG. 4, the process includes: Step 201, Step 101 of Embodiment 1;

Step 202: If the neighboring cell HeNB of the HeNB is directly connected to the MME, the neighboring cell HeNB sends an S1 signaling message to the MME, requesting to acquire the neighboring cell information of the neighboring cell HeNB once or periodically; if the neighboring cell HeNB passes the HeNB GW When the MME is connected, the neighboring cell HeNB sends the SI signaling message to the HeNB GW, where the S1 message includes the identifier of the neighboring cell HeNB, the request to acquire the neighboring cell information, and the acquiring mode (one-time or periodic), which is assumed to be a period in this embodiment. Sex);

Step 203: If the neighboring cell HeNB of the HeNB is directly connected to the MME, the MME sends an S1 signaling message to the HeNB according to whether the request in the step 202 is one-time acquisition or periodic acquisition, where the S1 message includes the neighboring cell HeNB. a neighboring HeNB list, if the neighboring cell HeNB is connected to the MME through the HeNB GW, the HeNB GW sends the S1 signaling message to the neighboring cell HeNB;

Step 204: The HeNB is closed, and the MME finds that the underlying SCTP connection with the HeNB is disconnected, thereby determining that the HeNB is unreachable, releasing resources related to the HeNB, such as an S1 connection, if the HeNB is connected to the MME through the HeNB GW, Then the HeNB GW releases resources related to the HeNB;

The neighboring area HeNB is configured to periodically acquire the neighboring area information. Therefore, after the MME or the HeNB GW acquires the HeNB, the S1 message is sent to the neighboring area HeNB, where the S1 message includes the neighboring area HeNB list of the neighboring area HeNB.

Step 205: The neighboring HeNB obtains its own neighbor HeNB list, and compares with the previously obtained neighbor HeNB list to know that the closed HeNB is unreachable.

It should be noted that the manner in which the neighboring cell HeNB requests to obtain the neighboring cell information may be one-time or periodic; the one-time acquiring mode refers to: after the HeNB GW or the MME receives the request message of the neighboring cell HeNB, Returning the neighboring cell information once; but after a period of time, the HeNB may be shut down. At this time, the neighboring cell HeNB sends a request message to the HeNB GW or the MME, and then the HeNB GW or the MME returns the neighboring cell information to the neighboring cell HeNB, the neighboring cell. The HeNB can compare the neighboring information returned twice and discover the closed home base station. The periodic acquisition mode is as follows: After receiving the request message of the neighboring cell HeNB, the HeNB GW or the MME periodically returns the neighboring cell information to the neighboring cell HeNB, so that the neighboring cell HeNB can be adjacent according to the neighboring cell information. List of home base stations Change, find the home base station that has been shut down.

Embodiment 3

This embodiment describes that in the UMTS system, when the HNB is closed, the information is notified to the neighboring cell HNB of the HNB, and the inventive point focuses on step 302. In this embodiment, the HNB and the neighboring cell HNB of the HNB are connected to the CN through the HNB GW, as shown in FIG. 5, the process includes:

Step 301: The HNB is started, and the HNB initiates a registration process to the HNB GW, and notifies the HNB GW of the HNB identifier, the location information of the HNB, and the like, and the HNB GW determines the neighbor relationship of the HNB according to the location information of the HNB, that is, the neighboring area of the HNB exists. What other HNBs;

Step 302: The HNB is closed, and the HNB GW finds that the underlying SCTP connection with the HNB is disconnected, thereby determining that the HNB is unreachable, releasing resources related to the HNB, such as an iuh connection; Step 303, for the neighboring area HNB of the HNB The HNB GW sends an iuh signaling message to the neighboring cell HNB, where the iuh signaling message may be a Radio Access Network Application Part (RANAP) protocol User Adaptation (RUA) or a home base station. Application Part (HNB AP) message, which includes the identity of the closed HNB and HNB shutdown information.

Embodiment 4

This embodiment describes that in the UMTS system, the HNB requests its neighbor information from the HNB GW. The HNB GW can respond to the neighbor information requested by the HNB when receiving the request, or periodically respond to the HNB with the neighbor information. In this way, when an HNB is closed, its neighbor HNB can obtain the information that the HeNB is closed, and the invention focuses on steps 402 and 403. In this embodiment, the closed HNB and the neighbor HNB of the HNB are connected to the MME through the HeNB GW. As shown in FIG. 6, the process includes:

Step 401, the same as step 301 of the third embodiment;

Step 402: The neighboring area HNB of the HNB sends an iuh signaling message to the HNB GW, where the iuh signaling message may be a RUA or an HNBAP message, requesting to acquire the neighboring area information of the neighboring area HNB once or periodically. Identification of the district HNB, request to obtain neighboring area information, and acquisition method (one-time or periodic);

Step 403: The HNB GW sends an iuh signaling message to the neighboring cell HNB, where the iuh signaling message can be According to the RUA or HNBAP message, according to whether the request in step 402 is one-time acquisition or periodic acquisition, a signaling message is sent to the ,, the message includes the neighboring cell ΗΝΒ list of the neighboring cell; Step 404, ΗΝΒ Close, HNB GW It is found that the underlying SCTP connection with the ΗΝΒ is disconnected, thereby judging that the ΗΝΒ is unreachable, releasing resources related to the ,, such as iuh connection; Step 405, the neighboring HNB obtains its own neighbor HNB list, and obtains the previous By comparing the neighboring HNB lists, you can know that the closed HNB is unreachable.

上述 In the above method, when the H(e)NB is closed, the neighboring area H(e)NB can obtain the information, so that the ongoing process with the H(e)NB can be terminated in time, and the cancellation can be cancelled. The process initiated by H(e)NB can also reduce the invalid network load.

As shown in FIG. 7, the system structure of the neighboring cell information is obtained by the home base station of the present invention. The system includes a home base station 71, an upper-level access node 72 of the home base station, and a neighboring home base station 73 of the home base station, where: The upper-level access node is configured to send the first message to the neighboring home base station of the closed home base station, and the neighboring home base station is configured to learn the closed information of the home base station according to the first message.

Specifically, the first message sent by the upper-level access node to the neighboring home base station of the home base station may carry the shutdown information of the home base station.

Further, the neighboring home base station is further configured to: after being turned on, send a request message for acquiring the neighboring cell information to the upper-level access node; and save or update the home base station carried in the response message sent by the upper-level access node. The neighboring cell information is further configured to: after receiving the request message sent by the neighboring cell home base station, send the response message to the neighboring cell home base station once or periodically, and carry the neighboring cell home base station Neighbor information, the neighbor information includes a list of neighboring home base stations that are turned on. Specifically, the first message sent by the upper-level access node to the neighboring home base station carries the neighboring cell information of the neighboring home base station; the neighboring home base station is used to carry the home base station carried in the first message. The neighboring area information is compared with the previously stored neighboring area information of the home base station, and the closing information of the home base station is known.

The first message is an S1 signaling message, and the upper access node is a home base station gateway or an MME; or the first message is an iuh signaling message, and the upper access node is a home base station. Gateway.

Further, the neighboring home base station may be further configured to terminate the service with the home base station after obtaining the closing information of the home base station.

In the above system, when the H(e)NB is closed, the neighboring area H(e)NB can obtain the information about the home base station being turned off, and the implementation method is the same as the method embodiment. See FIG. 3-6; The neighboring area H(e)NB can terminate the ongoing process with the H(e)NB in time, or cancel the process to be initiated to the H(e)NB, reducing the invalid network load.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program that instructs the associated hardware to be stored in a computer readable storage medium, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

The above embodiments are only intended to illustrate the technical solutions of the present invention and are not to be construed as limiting the invention. It should be understood by those skilled in the art that the present invention may be modified or equivalently substituted without departing from the spirit and scope of the invention.

Industrial applicability

The method and system for the neighboring base station to obtain the neighboring area information can be obtained by the neighboring area H(e)NB when the H(e)NB is closed, and then the H(e)NB can be terminated in time. The process can also cancel the process that is about to be initiated to the H(e)NB, thereby reducing the invalid network load.

Claims

Claim

A method for a home base station to obtain neighboring area information, the method comprising:

The upper-level access node of the home base station learns that the home base station is turned off, and sends the first message to the neighboring home base station of the closed home base station;

The neighboring home base station learns the closing information of the home base station according to the first message.

2. The method according to claim 1, wherein

The first message sent by the upper-level access node to the neighboring home base station of the home base station carries the shutdown information of the home base station.

The method according to claim 1, wherein before the upper-level access node of the home base station learns that the home base station is closed, the method further includes:

After the neighboring home base station is turned on, sending a request message for acquiring the neighboring area information to the upper-level access node;

After receiving the request message, the upper-level access node sends a response message to the neighboring home base station in a one-time or periodic manner, and carries the neighboring area information of the neighboring home base station, where the neighboring area information includes a list of neighboring home base stations;

The neighboring home base station saves or updates neighboring area information of the home base station.

4. The method according to claim 3, wherein

The first message sent by the upper-level access node to the neighboring home base station carries the neighboring area information of the neighboring home base station;

The neighboring home base station learns the closing information of the home base station according to the first message, and includes:

The neighboring home base station compares the neighboring cell information of the home base station carried in the received first message with the previously stored neighbor cell information of the home base station, and obtains the closing information of the home base station.

5. A method according to any of claims 2-4, wherein

The first message is an iuh signaling message, and the upper access node is a home base station gateway.

6. The method according to claim 5, wherein

After the neighboring home base station learns the shutdown information of the home base station, the method further includes:

The neighboring home base station terminates service with the home base station.

A system for a home base station to obtain neighboring area information, the system comprising a home base station, a superior access node of the home base station, and a neighboring home base station of the home base station, where:

The upper access node is configured to: notify that the home base station is closed, and send the first message to the neighboring home base station of the closed home base station;

The neighboring home base station is configured to: obtain the shutdown information of the home base station according to the first message.

8. The system according to claim 7, wherein

9. The system according to claim 7, wherein

The neighboring home base station is further configured to: after the opening, send a request message for acquiring the neighboring area information to the upper-level access node; and save or update the home base station carried in the response message sent by the upper-level access node The neighboring cell information is further configured to: after receiving the request message sent by the neighboring cell home base station, send a response message to the neighboring cell home base station once or periodically, The neighboring cell information of the neighboring cell home base station, where the neighboring cell information includes a list of the neighboring home base stations that are turned on.

10. The system according to claim 9, wherein

The neighboring home base station is configured to compare the neighboring cell information of the home base station carried in the first message with the previously stored neighboring cell information of the home base station, and obtain the closing information of the home base station.

11. A system according to any of claims 8-10, wherein The first message is an SI signaling message, and the upper access node is a home base station gateway or a mobility management entity; or

The first message is an M1 signaling message, and the upper access node is a home base station gateway.

12. The system of claim 11 wherein

The neighboring home base station is further configured to: terminate the service with the home base station after knowing the closing information of the home base station.