WO2012109970A1

WO2012109970A1 - Destination cell selection method, system and device

Info

Publication number: WO2012109970A1
Application number: PCT/CN2012/071082
Authority: WO
Inventors: 鲍炜; 杨义; 赵亚利
Original assignee: 电信科学技术研究院
Priority date: 2011-02-14
Filing date: 2012-02-13
Publication date: 2012-08-23
Also published as: CN102111806A; CN102111806B

Abstract

Disclosed are a destination cell selection method, system and device, relating to the technical field of wireless communications, and aiming to solve the problem of handover failure caused by a donor eNB selecting for a relay node a destination cell that does not allow the relay node to access. In the present invention, an Operation, Administration and Maintenance (OAM) device configures the donor attribute information about the eNB to the same, and the eNB sends the obtained donor attribute information to other eNBs adjacent to the eNB; the donor eNB determines a donor cell that allows the relay node to access according to the received donor attribute information and sends the information about the determined donor cell to the relay node; the relay node only reports measurement information about the donor cell, and the donor eNB selects a destination cell for cell handover for the relay node according to the measurement information reported by the relay node. The application of the present invention can avoid the problem of handover failure caused by a donor eNB selecting for a relay node a destination cell that does not allow the relay node to access for the same.

Description

Target cell selection method, system and device The present application claims priority to a Chinese patent application filed on February 14, 2011 by the Chinese Patent Office, the application number is 201110037545.6, and the invention name is "target cell selection method, system and device", The entire contents are incorporated herein by reference.

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, system, and device for selecting a target cell. Background technique

In order to improve the quality of mobile communication services in high-speed mobile scenarios, a mobile relay technology has been introduced. The network architecture of the mobile relay is similar to that of the fixed relay. As shown in Figure 1, the mobile relay node is connected to the cell under its home base station through a wireless interface, and then connected to the core network through a wired network. The base station is referred to as a donor base station (DeNB) of the mobile relay node, and the cell is referred to as a donor cell of the mobile relay node.

In Figure 1, there are three radio interfaces: the Un interface between the mobile Relay node and the donor base station; the Uu interface between the user terminal (R-UE) belonging to the mobile Relay node and the mobile Relay node; and the user terminal (UE) Uu interface with the donor base station. The mobile relay node provides processing functions such as signal reception, decoding, protocol conversion, and data forwarding between the Uu and Un interfaces.

It should be noted that not all base stations (eNBs) are suitable as DeNBs of the relay node. In the existing mechanism, the DeNB and/or donor cell of the relay node need to be pre-configured to the relay node by the Operation and Maintenance (OAM) system of the relay node.

The Mobile Relay node has the following key features:

The mobile relay node belongs to the network side node and is deployed, managed, and maintained by the operator.

The mobile relay node is installed on the vehicle to provide service for the user terminal inside the vehicle; the mobile relay node is relatively stationary with the served user terminal;

In the view of the user terminal, the mobile Relay node is an ordinary base station; the mobile Relay node manages an independent cell, and has an independent physical layer cell identifier, and transmits independent synchronization signals, reference symbols, etc.; directly belongs to the user terminal of the mobile Relay node. Receiving scheduling and control signaling from the mobile Relay node, and directly transmitting uplink data, control, and feedback information to the mobile Relay node;

In the view of the donor base station, the mobile relay node is similar to a user terminal: the mobile relay node interacts with the core network through the donor base station;

The mobile Relay node needs to measure the Un port signal quality and switch between different donor cells/donor base stations according to the measurement result. In the Long Term Evolution-Advanced (LTE-A) system, a fixed Relay node is introduced. Compared with the mobile Relay node, an important feature of the fixed Relay node is that its position does not change after the power is turned on.

In the network, not all e Bs can be used as De B of the Relay node. For a DeNB, the cells under its jurisdiction may not necessarily be the donor CelL of a Relay node. To determine which eNB/Cells can act as DeNBs. /donor Cell, the Relay node needs to know the DeNB/donor Cell information that the node can access before starting the service for the UE.

As a network side node, the donor node information of the relay node is configured by the operator through the OAM system of the relay node. The boot process of a fixed relay node is shown in Figure 2 and can be divided into the following two phases:

Phase I: The relay node is attached to the network in the role of the UE to obtain pre-configured parameters.

Specifically, after the power is turned on, the relay node selects a cell (not necessarily a cell supporting the relay), uses the same attach procedure as the UE, attaches to the network, and establishes a data connection with the Relay OAM system. The initial configuration parameters are then obtained from the Relay OAM system. The initial configuration parameters include: a list of donor cells that can be selected by the relay.

After obtaining the initial configuration parameters, the Relay node uses the same Detach procedure as the UE to detach from the network and trigger Phase II operations.

Phase II: The Relay node is attached to the network in the Relay role and starts working.

Specifically, the relay node selects an appropriate donor cell access network according to the donor cell list obtained in phase I, and completes the attach process as a relay. After completing a series of preparations, such as: selecting a mobility management entity (MME) supporting Relay for the Relay node, establishing an S1 interface and an X2 interface between the Relay node and the DeNB, and establishing a data connection for the Relay node to connect to the Relay OAM system, After the user plane bearer of the Relay node is established, the relay node starts the Uu interface and starts to provide services for the R-UE.

Once the fixed relay node enters the stage, the fixed relay node will always be connected unless an abnormal situation occurs, such as the restart of the relay node and the sudden deterioration of the wireless link shield of the Un port. The fixed Relay node does not change the donor cell in the connected state.

The following technical problems exist in the prior art:

The Mobile Relay node can reuse errors during the initial boot process! The reference source was not found. The flow shown in the process determines and connects to the network pre-configured DeNB/donor CelL. However, during the mobile Relay node handover, the target eNB/Cell of the handover is determined by the currently serving DeNB. In the current protocol, the DeNB cannot know whether the target eNB/Cell can allow the Relay node to access. This will cause the current DeNB of the mobile Relay node to select a target eNB/Cell that cannot allow the Relay node to access for the mobile Relay node, thereby causing the handover to fail. Summary of the invention The embodiment of the invention provides a method and a device for configuring base station information, which are used to solve the problem of how a base station obtains its own donor attribute information.

A method for configuring base station information, the method includes:

The operation and maintenance OAM device acquires donor donor attribute information of the base station, where the donor attribute information includes information about whether the base station allows the relay node to access, and/or whether the cell under the base station allows the relay node to access. Information

The OAM device configures the donor attribute information to the base station.

A base station information configuration device, the device comprising:

An acquiring unit, configured to acquire donor donor attribute information of the base station, where the donor attribute information includes information about whether the base station allows the relay node to access, and/or whether the cell under the base station allows the relay node to access Information;

And a configuration unit, configured to configure the donor attribute information to the base station.

In this solution, the 0AM device configures the donor attribute information of the base station to the corresponding base station, so that the base station can obtain its own donor attribute information.

The embodiment of the present invention further provides a base station information interaction method and device, which are used to solve the problem of how a base station obtains donor attribute information of a neighboring base station.

A base station information interaction method, the method comprising:

The first base station receives the donor donor attribute information of the local base station sent by the operation and maintenance 0AM device, where the donor attribute information includes information about whether the first base station allows the relay node to access, and/or whether the cell under the first base station is Information that allows the relay node to access;

The first base station sends the donor attribute information of the base station to the second base station adjacent to the base station.

A base station information interaction device, the device includes:

a receiving unit, configured to receive the donor donor attribute information of the local base station sent by the operation and maintenance 0AM device, where the donor attribute information includes information about whether the base station allows the relay node to access, and/or whether the cell under the base station is Information that allows the relay node to access;

The interaction unit is configured to send the donor attribute information of the base station to other base stations adjacent to the base station.

In this solution, after receiving the donor attribute information of the local base station sent by the OAM device, the base station sends the donor attribute information of the local base station to other base stations adjacent to the base station, so that the base station can obtain the donor attribute information of the neighboring base station. .

The embodiment of the invention provides a method and a device for reporting cell measurement information, which are used to solve the problem that the relay node only reports the measurement information of the donor cell.

A method for reporting cell measurement information, the method comprising:

The relay node receives information of a donor cell sent by the donor base station, where the donor cell includes a relay allowed under the donor base station a cell that the node accesses, and a cell that allows the relay node to access under the base station adjacent to the donor base station; after obtaining the measurement information of the neighboring cell of the current cell, the relay node determines whether the neighbor cell is included in the donor cell. ;

When determining that the neighboring cell is included in the donor cell, the relay node uplinks the measurement information of the neighboring cell to the donor base station.

A cell measurement information reporting device, the device includes:

a receiving unit, configured to receive information of a donor cell sent by a donor base station, where the donor cell includes a cell that allows the relay node to access under the donor base station, and a cell that allows the relay node to access under the base station adjacent to the donor base station;

a determining unit, configured to determine, after obtaining the measurement information of the neighboring cell of the current cell, whether the neighboring cell is included in the donor cell;

The reporting unit is configured to report the measurement information of the neighboring cell to the donor base station when determining that the neighboring cell is included in the donor cell.

In this solution, after obtaining the measurement information of the neighboring cell of the current cell, the relay node determines whether the neighbor cell is included in the donor cell information sent by the donor base station, and reports the measurement information of the neighboring cell when the neighboring cell is included. Give the donor base station. It can be seen that, by using the solution, the relay node can report only the measurement information of the donor cell.

The embodiment of the invention provides a method, a system and a device for selecting a target cell, which are used to solve the problem that the donor base station selects a target cell that cannot allow the relay node to access the relay node, and causes the handover to fail.

A method for selecting a target cell, the method comprising:

The donor base station receives the donor donor attribute information of the base station sent by the OAM device, and the donor donor attribute information sent by the base station adjacent to the base station, where the donor attribute information includes whether the base station allows the relay node to access. Information, and/or information about whether the cell under the base station allows the relay node to access;

The donor base station determines, according to the donor attribute information, a donor cell that allows the relay node to access under the base station, and a donor cell that allows the relay node to access under the base station adjacent to the base station; and sends the determined information of the donor cell to Relaying the node to notify the relay node that only the measurement information of the donor cell is up;

The donor base station selects a target cell that performs cell handover for the relay node according to the measurement information reported by the relay node to the donor cell.

A method for selecting a target cell, the method comprising:

The donor base station receives the donor donor attribute information of the base station sent by the OAM device, the donor attribute information sent by the base station adjacent to the base station, and the measurement information of the cell reported by the relay node, where the donor attribute information Information including whether the base station allows the relay node to access, and/or information about whether the cell under the base station allows the relay node to access;

The donor base station determines, according to the received donor attribute information, whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access; The donor base station selects a target cell that performs cell handover for the relay node from the cell that allows the relay node to access. A target cell selection device, the device includes:

a receiving unit, configured to receive donor donor attribute information of the local base station sent by the OAM device, and donor donor attribute information sent by the base station adjacent to the base station, where the donor attribute information includes whether the base station allows relaying Information accessed by the node, and/or information about whether the cell under the base station allows the relay node to access;

a notification unit, configured to determine, according to the donor attribute information, a donor cell that is allowed to be accessed by the relay node in the base station, and a donor cell that allows the relay node to access under the base station adjacent to the base station; the determined donor cell The information is sent to the relay node to notify the relay node that only the measurement information of the donor cell is up.

And a selecting unit, configured to select, according to the measurement information of the donor cell reported by the relay node, a target cell that performs cell handover for the relay node.

A target cell selection device, the device includes:

a receiving unit, configured to receive donor donor attribute information of the base station sent by the operation and maintenance device, donor attribute information sent by the base station adjacent to the base station, and measurement information of the cell reported by the relay node, where The donor attribute information includes information on whether the base station allows the relay node to access, and/or information on whether the cell under the base station allows the relay node to access;

A wireless communication system, the system comprising:

The operation and maintenance device is configured to obtain donor donor attribute information of the base station, where the donor attribute information includes information about whether the base station allows the relay node to access, and/or whether the cell under the base station allows the relay node Accessing information; configuring the donor attribute information to the base station;

a base station, configured to receive donor attribute information of the base station sent by the 0AM device, and send donor attribute information of the base station to a donor base station adjacent to the base station;

a donor base station, configured to receive donor attribute information of the local base station sent by the OAM device, and donor attribute information sent by the base station adjacent to the base station; and determine, according to the donor attribute information, the access node is allowed to access the base station a donor cell and a donor cell that allows the relay node to access the base station adjacent to the base station, and send the determined information of the donor cell to the relay node; according to the measurement information reported by the relay node to the donor cell, Selecting a target cell for performing cell handover for the relay node;

a relay node, configured to receive information about a donor cell sent by a donor base station; after obtaining measurement information of a neighboring cell of the current cell, determining whether the neighboring cell is included in the donor cell; and determining, in determining, the donor cell The neighbor When the cell is in the cell, the measurement information of the neighboring cell is reported to the donor base station.

A wireless communication system, the system comprising:

The operating maintenance OAM device is configured to acquire donor donor attribute information of the base station, where the donor attribute information includes information about whether the base station allows the relay node to access, and/or whether the cell under the base station allows the relay node. Accessing information; configuring the donor attribute information to the base station;

a base station, configured to receive donor attribute information of the base station sent by the OAM device, and send donor attribute information of the base station to a donor base station adjacent to the base station;

a donor base station, configured to receive donor donor attribute information of the base station sent by the OAM device, donor attribute information sent by the base station adjacent to the base station, and measurement information of the cell reported by the relay node; according to the received donor attribute The information determines whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access. From the cell that allows the relay node to access, the target cell that performs cell handover is selected for the relay node.

In this solution, the donor base station determines, according to the donor attribute information of the local base station sent by the OAM device and the donor attribute information sent by the base station adjacent to the base station, the donor cell that allows the relay node to access, and determines the determined donor cell. The information is sent to the relay node, so that the relay node only performs measurement information on the donor cell, and then the donor base station selects the target cell for cell handover for the relay node according to the measurement information reported by the relay node. Since the relay node only uploads the measurement information of the donor cell, the target cell selected by the donor base station according to the measurement information reported by the relay node for the relay node must be a cell that allows the relay node to access, thereby avoiding the donor. The base station selects a cell that does not allow the relay node to access the relay node, causing the handover failure.

The donor base station determines whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access according to the donor attribute information of the local base station and the donor attribute information sent by the base station adjacent to the base station, and From the cell that allows the relay node to access, the target cell that performs cell handover is selected for the relay node. It can be seen that, in the present solution, the target cell selected by the donor base station for the relay node must be a cell that allows the relay node to access, thereby avoiding the problem that the donor base station selects a cell that does not allow the relay node to access the relay node to cause the handover failure. . DRAWINGS

1 is a schematic diagram of a network structure of a mobile relay in the prior art;

2 is a schematic diagram of a boot process of a relay in the prior art;

FIG. 3 is a schematic flowchart of a method according to an embodiment of the present disclosure;

4 is a schematic flowchart of another method according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of still another method according to an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart of still another method according to an embodiment of the present disclosure;

FIG. 7 is a schematic flowchart of still another method according to an embodiment of the present disclosure;

8A is a schematic diagram of determining, by a DeNB, a target cell for a mobile relay according to an embodiment of the present invention; 8B is a schematic diagram of an unresponsive X2 port interaction donor attribute in an embodiment of the present invention; FIG. 8C is a schematic diagram of a response X2 port interaction donor attribute in an embodiment of the present invention;

8D is a schematic diagram of a process of establishing an X2 interface according to an embodiment of the present invention;

8E is a schematic flowchart of a base station configuration update according to an embodiment of the present invention;

FIG. 8F is a schematic diagram of an unresponsive S 1 port interactive donor attribute in an embodiment of the present invention; FIG.

FIG. 8G is a schematic diagram of a S 1 port interactive donor attribute in response to an embodiment of the present invention; FIG.

FIG. 8H is a schematic diagram of a donor attribute query process according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a system according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a device according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another device according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of still another device according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of still another device according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of still another device according to an embodiment of the present invention. detailed description

In order to prevent the donor base station from selecting a target cell that cannot be allowed to be accessed by the relay node, the embodiment of the present invention provides a base station information configuration, a base station information interaction, and a target cell selection method. The operation and maintenance (OAM) device allocates donor attribute information of the base station (including the donor base station) to the corresponding base station, and the base station sends the obtained donor attribute information to other base stations (including the donor base station) adjacent to the base station. The donor base station may select the target cell for cell handover for the relay node according to the following two ways: First, the donor base station determines, according to the dodon attribute information, the donor cell that allows the relay node to access, and the information of the determined donor cell. Sending to the relay node, the relay node only reports the measurement information of the donor cell, and the donor base station selects the target cell for the cell handover according to the measurement information reported by the relay node; second, the donor base station receives the Donor attribute information determines that the relay node reports Each cell measurement information corresponding to the relay node whether to permit access to and from the cell to allow access of a relay node, the relay node cell selected for handover target cell.

Referring to FIG. 3, a method for configuring base station information according to an embodiment of the present invention includes the following steps:

Step 30: The OAM device acquires donor attribute information of the base station; the donor attribute information includes information about whether the base station allows the relay node to access, and/or information about whether the cell under the base station allows the relay node to access; The donor attribute information of the base station is configured by the maintenance personnel in the OAM device.

Step 3: The OAM device configures the donor attribute information to the base station.

Preferably, after the OAM device configures the donor attribute information to the base station, the OAM device reconfigures the changed donor attribute information to the base station when the donor attribute information is changed.

Preferably, when there are multiple relay nodes in the current network, the donor attribute information further includes: the base station Type information of the relay node that is allowed to access, and/or type information of the relay node that the cell under the base station is allowed to access. The types of relay nodes include inband relay nodes, outband relay nodes, and the like.

Referring to FIG. 4, an embodiment of the present invention further provides a base station information interaction method, including the following steps:

Step 40: The first base station receives the donor attribute information of the local base station sent by the OAM device, where the donor attribute information includes information about whether the first base station allows the relay node to access, and/or whether the cell under the first base station allows the relay. Information about node access;

Step 41: The first base station sends the donor attribute information of the local base station to the second base station adjacent to the base station. Preferably, after the first base station sends the donor attribute information of the local base station to the second base station adjacent to the base station, the first base station receives the changed donor attribute information sent by the 0AM device, and the changed donor The attribute information is resent to the second base station.

In step 41, the first base station may periodically send the donor attribute information of the local base station to the second base station adjacent to the base station; or the first base station sends the donor of the base station when a preset trigger event occurs. The attribute information is sent to a second base station adjacent to the base station.

The triggering event may be: the first base station receives the donor attribute information of the second base station sent by the second base station; or the first base station receives the donor attribute information query message sent by the second base station.

The triggering event is: when the first base station receives the donor attribute information of the second base station sent by the second base station, the first base station may send the donor attribute information of the base station to the second base station by using a response message to the second base station. For example, the second base station sends the donor attribute information of the second base station to the first base station by using the X2 setup request message; the first base station sends the donor attribute information of the base station to the second base station by using the X2 setup response message; or

The second base station sends the donor attribute information of the second base station to the first base station by using the base station configuration update message. The first base station sends the donor attribute information of the base station to the second base station by using the base station configuration update response message.

After receiving the donor attribute information sent by the first base station, the second base station may also return a response message to the first base station, where the response message may or may not carry the donor attribute information of the second base station.

The triggering event is: when the first base station receives the donor attribute information query message sent by the second base station, the candidate attribute information query message carries the qualification information of the donor attribute information that needs to be queried; in step 41, A base station sends donor attribute information of the base station that satisfies the defined condition to the second base station. For example, the second base station may carry the relay node type information in the donor attribute information query message, and the first base station sends information about whether the base station and/or the cell under the base station allows access of the type of the relay node to the first Two base stations.

In step 41, the first base station may send the donor attribute information of the local base station to the second base station by using an X2 interface with the second base station; or the first base station uses the mobility management entity (MME) to set the donor attribute of the local base station. The information is sent to the second base station.

Preferably, when there are multiple relay nodes in the current network, the donor attribute information further includes: type information of the relay node that the base station is allowed to access, and/or a cell allowed by the cell under the base station Type of incoming relay node Interest.

Referring to FIG. 5, an embodiment of the present invention further provides a method for selecting a target cell, including the following steps:

Step 50: The donor base station receives the donor attribute information of the local base station sent by the device, and the donor attribute information includes information about whether the base station allows the relay node to access and/or whether the cell under the base station allows the relay node to access. Information; and, the donor base station receives donor attribute information sent by the base station adjacent to the base station from the OAM device; the donor attribute information includes information about whether the base station adjacent to the base station allows the relay node to access and/or Whether the cell under the base station adjacent to the base station allows the relay node to access information;

Step 51: The donor base station determines, according to the donor attribute information, a donor cell that is allowed to be accessed by the relay node in the base station, and a donor cell that allows the relay node to access under the base station adjacent to the local base station; and sends the information of the determined donor cell. Giving the relay node to notify the relay node that only the measurement information for the donor cell is up;

Step 52: The donor base station selects a target cell for performing cell handover for the relay node according to the measurement information reported by the relay node to the donor cell. For specific selection, a cell may be selected from the donor cell as a target cell according to a preset algorithm, for example, a cell with the best signal quality is selected as the target cell.

The information of the donor cell includes: one or any combination of cell identification information, cell frequency point information, and identity information of a base station to which the cell belongs. The relay node can determine the cell that needs to report the measurement information based on the information.

Preferably, when there are multiple relay nodes in the current network, the donor attribute information further includes: type information of the relay node that the base station is allowed to access, and/or a cell allowed by the cell under the base station Type information of the incoming relay node.

Referring to FIG. 6, an embodiment of the present invention further provides a method for selecting a target cell, including the following steps:

Step 60: The donor base station receives the donor attribute information of the base station sent by the 0AM device, the donor attribute information sent by the base station adjacent to the base station, and the measurement information of the cell reported by the relay node. The donor attribute information includes Whether the base station and/or the cell under the corresponding base station allows the relay node to access information; here, for the donor attribute information of the base station sent by the OAM device, the corresponding base station refers to the base station; and the base station adjacent to the base station The donor attribute information sent, the corresponding base station refers to the base station adjacent to the base station;

Step 61: The donor base station determines, according to the received donor attribute information, whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access;

Step 62: The donor base station selects a target cell that performs cell handover for the relay node from the cell that allows the relay node to access. Specifically, a cell selected as a target cell from a cell that allows the relay node to access may be selected according to a preset algorithm, for example, a cell with the best signal quality is selected as the target cell.

Referring to FIG. 7, an embodiment of the present invention further provides a method for measuring cell information, including the following steps: Step 70: The relay node receives information of a donor cell sent by the donor base station, where the donor cell includes a cell that allows the relay node to access under the donor base station, and a cell that allows the relay node to access under the base station adjacent to the donor base station. Step 71: After obtaining the measurement information of the neighboring cell of the current cell, the relay node determines whether the neighboring cell is included in the donor cell.

Step 72: The relay node reports the measurement information of the neighboring cell to the donor base station when determining that the neighboring cell is included in the donor cell. When it is determined that the neighboring cell is not included in the donor cell, the measurement information of the neighboring cell is not reported to the donor base station.

The information of the cell includes: one or any combination of cell identification information, cell frequency point information, and identity information of a base station to which the cell belongs.

The invention will be specifically described below:

For convenience of description, defining the donor attribute of the eNB may include, but is not limited to:

Whether e B can be used as the DeNB of the relay node;

Which cell of the eNB can serve as the donor cell of the relay node;

When there are multiple Relay nodes in the network, the eNB can serve as the DeNB of the Relay Nodes. When there are multiple Relay nodes in the network, the eNB can serve as the Relay Cell. .

The main idea of the present invention is: The eNB acquires the donor attribute of the neighboring eNB, so that when the mobile relay node performs handover, the target DeNB/donor Cell is selected for use.

The present invention relates to a method for determining a target donor cell during a handover between DeNBs after the relay node provides normal operation for the R-UE. After the relay node is powered on, the process of selecting the donor cell to access the network for the first time is not limited in this patent. That is, the mobile relay node can adopt the error! The reference source was not found. The method shown obtains the initial donor eNB/Cell list, and the donor cell can also be determined in other ways.

The OAM system behavior of the eNB includes:

The OAM system of the eNB configures the donor attribute of each eNB to the corresponding eNB;

When the donor attribute of the eNB needs to be changed, the OAM of the eNB notifies the corresponding eNB donor attribute to the corresponding e B.

The eNB side behavior includes:

The eNB obtains its donor attribute from the OAM system of the eNB;

The donor attribute is exchanged between the eNB and the neighboring eNB;

When the donor attribute of the eNB is changed, the neighboring eNB needs to be notified by the corresponding attribute update process;

The eNB can control the measurement of the relay node, that is, the eNB performs measurement configuration on the relay node, and the relay node is required to perform measurement only on the neighboring cell of the donor cell;

If the eNB does not limit the neighbor cell to be measured by the Relay node, the serving DeNB needs to be tested according to the Relay node. The quantity reporting result and the donor attribute of the neighboring cell determine the neighboring cell that can serve as the target cell.

The present invention is embodied as follows:

As shown in Figure 8A. eNB1 is the current serving DeNB of the mobile relay node, and eNB2 is the neighbor e B of eNB1. The process by which eNB1 determines the target donor cell of the mobile relay node is as follows:

Step 1: The eNB2 downloads the configuration parameters from the OAM system, and the configuration parameters include the donor attribute of the eNB.

Step 2: eNB2 interacts with all neighboring eNBs (eNB1 in the figure) with the donor attribute. Through the process: eNB1 obtains the donor attribute of e B2; through multiple interactions with different neighbor eNBs, eNB1 can acquire the donor attribute of all neighboring eNBs.

The process is initiated by the eNB2, and the initiation time may be after the eNB2 obtains its own donor attribute from its OAM for the first time, or after the e B2 obtains its updated donor attribute from its own OAM.

Step 3: The eNB 1 may send the cell information of the donor and the neighboring eNB as the donor cell to the mobile relay node according to the obtained donor attribute of the neighboring eNB. This step is an optional step.

The cell information of the donor cell may be: cell identity information, cell frequency point information, identity information of an eNB to which a cell belongs, and the like.

Step 4: The eNB 1 configures measurement parameters for the mobile relay node.

Step 5: The mobile relay node reports the measurement result according to the configuration of the eNB l:

If the eNB1 sends the information of the donor cell to the mobile relay node, the mobile relay node can only measure the information of the notified donor cell.

If the eNB1 does not send the information of the donor cell to the mobile relay node, the mobile relay node can perform the measurement result of all the cells that meet the reporting condition.

The upper condition is configured by the eNB 1 in step 4.

Step 6: The eNB determines the target donor cell according to the measurement result reported by the mobile relay node.

If the mobile relay node reports only the measurement information of the notified donor cell, the eNB1 only needs to determine the target donor cell according to the measurement result.

If the mobile relay node reports the measurement result of all the cells that meet the reporting condition, the eNB1 needs to determine the target donor cell to be switched by the relay node according to the measurement result and the donor attribute of the neighboring eNB.

In this embodiment, the specific flow of step 2 in Fig. 8A is as shown in Fig. 8B:

Step 1: The eNB2 notifies the eNB 1 of its own donor attribute obtained from its own OAM system; the process may be triggered periodically or triggered by an event. When the process is triggered by an event, the triggering event may be: eNB2 initially downloads its own donor attribute from its OAM; or eNB2 obtains its own updated donor attribute from its OAM; or in the response message to eNB1 The own donor attribute is notified to the eNB 1.

In FIG. 8B, eNB1 is a neighboring eNB of eNB2: The specific process of step 2 in Figure 8A may also be as shown in Figure 8C:

Step 1: eNB2 notifies eNB 1 of its own donor attribute obtained from its own OAM system; Step 2: eNB l returns a response message to eNB2, informing eNB2 that it successfully received the message sent in step 1. This process can be triggered periodically or by an event. When the process is triggered by an event, the triggering event may be: eNB2 initially downloads its own donor attribute from the OAM; or e B2 obtains its own updated donor attribute from the OAM.

In Figure 8C, eNB1 is the neighboring eNB of eNB2:

As an optional optimization, eNB1 may return its own donor attribute to eNB2 in the response message. If the donor attribute is notified by the procedure shown in 8C, the existing protocol procedure can be reused, such as the X2 setup process shown in Figure 8D and the eNB configuration update procedure shown in Figure 8E. That is, the donor attribute information can be carried by extending the existing: X2 setup request message, X2 setup response message, eNB configuration update message, and eNB configuration update acknowledge message.

When there is no X2 interface or the X2 interface is unavailable between the eNB 1 and the e B2, in this embodiment, the specific process of step 2 in FIG. 8A is as shown in FIG. 8F:

Step 1: e B2 notifies the MME of its own donor attribute obtained from its own OAM system; in the message sent by e B2, it needs to carry its own identification information and identification information of the target eNB;

Step 2: The MME forwards the message sent by the eNB2 to the eNB1;

This process can be triggered periodically or by an event. When the process is triggered by an event, the triggering event may be: eNB2 initially downloads its own donor attribute from its own OAM; or eNB2 obtains its own updated donor attribute from its own OAM.

In Figure 8F, eNB l is the neighboring eNB of e B2:

When there is no X2 interface or the X2 interface is unavailable between the eNB 1 and the eNB 2, in this embodiment, the specific process of step 2 in FIG. 8A may also be as shown in FIG. 8G:

Step 1: The eNB2 notifies the MME of its own donor attribute obtained from its OAM system; in this message, it needs to carry the identity information of itself (ie, e B2 ) and the identification information of the target eNB (ie, eNB1); Step 2 : MME forwards the message sent by eNB2 to eNB 1;

Step 3: eNB1 returns a response message to the MME, and confirms that it successfully receives the message sent in step 2; in the message, it needs to carry the identity information of itself (ie, eNB1) and the identity information of the target eNB (ie, e B2 ); Step 4 The MME forwards the message sent by the eNB1 to the eNB2.

In Figure 8G, eNB1 is a neighboring eNB of eNB2: As an optional optimization, the eNB 1 may return its own donor attribute to the MME in the response message (message 3).

In Figure 8B, Figure 8C, Figure 8F, Figure 8G, the notification donor attribute sent by eNB2 can be triggered by eNB1. For example, as shown in the "donor attribute query procedure" in step 0 of Figure 8H:

Step 0: The eNB 1 sends a donor attribute query message to the eNB2, requesting the eNB2 to return its own donor attribute information.

Similarly, the eNB2 donor attribute interaction process in FIG. 8C, FIG. 8F, and FIG. 8G may also be triggered by the eNB 1 by sending a donor attribute query message. In the corresponding process in FIG. 8F and FIG. 8G, the donor attribute query message sent by the eNB 1 needs to be transited by the MME and sent to the eNB2.

The eNB l may send a donor attribute query message to obtain the donor attribute of the neighbor eNB/Cell when it becomes the De B of the mobile relay.

As an optimization, in the donor attribute query message, the attribute information of the relay node, such as the type of the relay node, may be carried. If the donor attribute query message contains the attribute information of the relay node, e B2 only needs to feedback the donor attribute that matches the attribute of the relay node. For example, the eNB indicates in the donor attribute query message that: the inband relay related donor attribute needs to be queried, and e B2 only needs to reply in the notification donor attribute message: whether the eNB2 can serve as the DeNB of the inband relay node (or which Cell can serve as The donor cell of the inband relay node; there is no need to indicate whether it can act as the DeNB of the outband relay node (or which cells can act as the donor cell of the outband relay node).

Referring to FIG. 9, an embodiment of the present invention further provides a wireless communication system, where the system includes:

The OAM device 90 is configured to obtain donor donor attribute information of the base station, where the donor attribute information includes information about whether the base station allows the relay node to access, and/or information about whether the cell under the base station allows the relay node to access. Configuring the donor attribute information to the base station;

The base station 91 is configured to receive the donor attribute information of the base station sent by the OAM device, and send the donor attribute information of the base station to the donor base station adjacent to the base station;

a donor base station 92, configured to receive donor attribute information of the local base station sent by the OAM device, and donor attribute information sent by the base station adjacent to the base station; and determine, according to the donor attribute information, allow the relay node to access the base station. a donor cell and a donor cell that allows the relay node to access under the base station adjacent to the base station, and send the determined information of the donor cell to the relay node; and the measurement information reported by the relay node to the donor cell , selecting a target cell for performing cell handover for the relay node;

a relay node 93, configured to receive information about a donor cell sent by a donor base station; after obtaining measurement information of a neighboring cell of the current cell, determining whether the neighboring cell is included in the donor cell; determining the donor cell When the cell is included, the measurement information of the neighbor cell is reported to the donor base station.

Still referring to FIG. 9, an embodiment of the present invention further provides a wireless communication system, where the system includes: The OAM device 90 is configured to acquire donor attribute information of the base station, where the donor attribute information includes information about whether the base station allows the relay node to access, and/or information about whether the cell under the base station allows the relay node to access; And configuring the donor attribute information to the base station;

The base station 91 is configured to receive the donor attribute information of the local base station sent by the OAM device, and send the donor attribute information of the base station to the donor base station adjacent to the base station;

The donor base station 92 is configured to receive donor donor attribute information of the local base station sent by the OAM device, donor attribute information sent by the base station adjacent to the base station, and measurement information of the cell reported by the relay node; according to the received donor The attribute information determines whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access; and from the cell that allows the relay node to access, select a target cell for performing cell handover for the relay node;

The relay node 93 is configured to report the measurement information of the neighboring cell to the donor base station after obtaining the measurement information of the neighboring cell of the current cell.

Referring to FIG. 10, an embodiment of the present invention further provides a base station information configuration device, where the device includes:

The obtaining unit 101 is configured to acquire donor attribute information of the base station, where the donor attribute information includes information about whether the base station and/or the cell under the base station allows the relay node to access;

The configuration unit 102 is configured to configure the donor attribute information to the base station.

The configuration unit 102 is further configured to:

After the donor attribute information is allocated to the base station, when the donor attribute information is changed, the changed donor attribute information is reconfigured to the base station.

When there are multiple relay nodes in the current network, the donor attribute information further includes:

The type information of the relay node that the base station allows access, and/or the type information of the relay node that the cell under the base station is allowed to access.

Referring to FIG. 11, an embodiment of the present invention further provides a base station information interaction device, where the device includes:

The receiving unit 111 is configured to receive donor donor attribute information of the local base station sent by the operation and maintenance OAM device; the donor attribute information includes information about whether the base station allows the relay node to access, and/or whether the cell under the base station is allowed. Following the information of the node access;

The interaction unit 112 is configured to send the donor attribute information of the base station to other base stations adjacent to the base station.

The interaction unit 112 is further configured to:

After transmitting the donor attribute information of the base station to another base station adjacent to the base station, the changed donor attribute information sent by the OAM device is received, and the changed donor attribute information is retransmitted to the other base station.

The interaction unit 112 is configured to:

Periodically transmitting the donor attribute information of the base station to the other base station; or

When a preset trigger event occurs, the donor attribute information of the local base station is sent to the other base station. The triggering event is: receiving donor attribute information sent by the other base station; or receiving the other The donor attribute information query message sent by the base station.

The interaction unit 112 is configured to:

The triggering event is: receiving the donor attribute information sent by the other base station, receiving the donor attribute information sent by the other base station by using an X2 setup request message; and setting the donor attribute information of the base station by using the X2 setup response message Sent to the other base station; or

The donor attribute information sent by the other base station is received by the base station configuration update message, and the donor attribute information of the local base station is sent to the other base station by using a base station configuration update response message.

The interaction unit 112 is configured to:

The triggering event is: when the donor attribute information query message sent by the other base station is received, and the donor attribute information query message carries the qualified condition information of the donor attribute information that needs to be queried, the base station is satisfied. The qualified donor attribute information is sent to the other base stations.

The interaction unit 112 is configured to:

Transmitting the donor attribute information of the local base station to the other base station by using an X2 interface with the other base station; or

The donor attribute information of the base station is sent to the other base station by the mobility management entity MME.

Referring to FIG. 12, an embodiment of the present invention further provides a target cell selection device, where the device includes:

The receiving unit 121 is configured to receive donor donor attribute information of the local base station sent by the operation and maintenance OAM device, and donor donor attribute information sent by the base station adjacent to the base station; the donor attribute information includes the corresponding base station and/or corresponding Whether the cell under the base station allows the relay node to access information;

The notification unit 122 is configured to determine, according to the donor attribute information, a donor cell that allows the relay node to access under the base station, and a donor cell that allows the relay node to access under the base station adjacent to the base station; The information of the donor cell is sent to the relay node to notify the relay node that only the measurement information of the donor cell is up;

The selecting unit 123 is configured to select, according to the measurement information of the donor cell reported by the relay node, a target cell that performs cell handover for the relay node.

The information of the donor cell includes:

One or any combination of cell identification information, cell frequency point information, and identification information of a base station to which the cell belongs. Referring to FIG. 13, an embodiment of the present invention further provides a target cell selection device, where the device includes:

The receiving unit 131 is configured to receive donor donor attribute information of the local base station sent by the operation and maintenance OAM device, donor attribute information sent by the base station adjacent to the base station, and measurement information of the cell reported by the relay node; The attribute information includes information about whether the cell under the corresponding base station and/or the corresponding base station allows the relay node to access;

a determining unit 132, configured to determine, according to the received donor attribute information, whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access;

The selecting unit 133 is configured to select, for the relay node, the cell handover from the cell that allows the relay node to access. Target cell.

Referring to FIG. 14, an embodiment of the present invention further provides a cell measurement information reporting device, where the device includes: a receiving unit 141, configured to receive information of a donor cell sent by a donor base station, where the donor cell includes a relay node under a donor base station a cell that is accessed, and a cell that allows the relay node to access under the base station adjacent to the donor base station; and a determining unit 142, configured to determine, after obtaining the measurement information of the neighboring cell of the current cell, whether the donor cell includes the Neighboring cell;

The upper unit 143 is configured to report the measurement information of the neighboring cell to the donor base station when determining that the neighboring cell is included in the donor cell.

The information of the cell includes:

One or any combination of cell identification information, cell frequency point information, and identification information of a base station to which the cell belongs. In summary, the beneficial effects of the present invention include:

In the solution provided by the embodiment of the present invention, the OAM device configures the donor attribute information of the base station to the corresponding base station, and the base station sends the obtained donor attribute information to other base stations adjacent to the base station; thus, the donor base station can be based on the OAM. The donor attribute information of the local base station sent by the device and the donor attribute information sent by the base station adjacent to the base station determine a donor cell that allows the relay node to access, and send the determined information of the donor cell to the relay node. The relay node is only configured to measure the information of the donor cell, and then the measurement information of the donor base station on the relay node is selected by the relay node as the target cell for performing cell handover. Since the relay node only reports the measurement information of the donor cell, the target cell selected by the donor base station according to the measurement information reported by the relay node for the relay node must be a cell that allows the relay node to access, thereby avoiding the donor base station. Selecting a cell that does not allow the relay node to access for the relay node causes the handover to fail.

In the solution provided by the embodiment of the present invention, the OAM device configures the donor attribute information of the base station to the corresponding base station, and the base station sends the obtained donor attribute information to other base stations adjacent to the base station; thus, the donor base station can be based on the OAM. The donor attribute information of the base station sent by the device and the donor attribute information sent by the base station adjacent to the base station, determining whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access, and allows the relay to be relayed. In the cell that the node accesses, the target cell that performs cell handover is selected for the relay node. It can be seen that, in the present solution, the target cell selected by the donor base station for the relay node must be a cell that allows the relay node to access, thereby avoiding the problem that the donor base station selects a cell that does not allow the relay node to access the relay node to cause the handover failure. .

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. To implement the functions specified in one or more blocks of a flow or a flow and/or block diagram of a flowchart Device.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those of ordinary skill in the art that <RTIgt; Therefore, the appended claims are intended to be construed as including the preferred embodiments and the modifications

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Rights request

A method for configuring base station information, characterized in that the method comprises:

The OAM device configures the donor attribute information to the base station.

The method according to claim 1, wherein after the OAM device configures the donor attribute information to the base station, the method further includes:

When the donor attribute information is changed, the 0AM device reconfigures the changed donor attribute information to the base station.

The method according to claim 1 or 2, wherein, when there are multiple relay nodes in the current network, the donor attribute information further includes:

4. A base station information interaction method, the method comprising:

The first base station receives the donor donor attribute information of the local base station sent by the operation and maintenance OAM device, where the donor attribute information includes information about whether the first base station allows the relay node to access, and/or whether the cell under the first base station is Information that allows the relay node to access;

The method according to claim 4, wherein after the first base station sends the donor attribute information of the base station to the second base station adjacent to the base station, the method further includes:

The first base station receives the changed donor attribute information sent by the 0AM device, and retransmits the changed donor attribute information to the second base station.

The method according to claim 4, wherein the transmitting, by the first base station, the donor attribute information of the base station to the second base station adjacent to the base station includes:

The first base station periodically sends the donor attribute information of the local base station to the second base station adjacent to the local base station; or the first base station sends the donor attribute information of the base station to the preset base station when the trigger event occurs. The second base station adjacent to the base station.

7. The method of claim 6, wherein the triggering event is:

Receiving, by the first base station, the donor attribute information of the second base station sent by the second base station; or

The first base station receives the donor attribute information query message sent by the second base station.

8. The method of claim 7, wherein the triggering event is: When the first base station receives the donor attribute information of the second base station, the second base station sends the donor attribute information of the second base station to the first base station by using an X2 setup request message; the first base station establishes through X2. Sending, by the response message, the donor attribute information of the local base station to the second base station; or

The method according to claim 7, wherein, in the triggering event, when the first base station receives the donor attribute information query message sent by the second base station, the donor attribute information query message carries the need Qualification information of the donor attribute information of the query;

The first base station sends the donor attribute information of the local base station to the second base station adjacent to the local base station, and the first base station sends the donor attribute information of the local base station that meets the qualified condition to the second base station.

The method according to any one of claims 4-9, wherein the first base station sends the donor attribute information of the base station to the second base station by using an X2 interface with the second base station; or

The first base station sends the donor attribute information of the base station to the second base station by using the mobility management entity MME.

11. A method for selecting a target cell, the method comprising:

The donor base station receives the donor donor attribute information of the base station sent by the OAM device and the donor donor attribute information sent by the base station adjacent to the base station, where the donor attribute information includes whether the base station allows the relay node to connect. Information entered, and/or information about whether the cell under the base station allows the relay node to access;

The donor base station determines, according to the donor attribute information, a donor cell that allows the relay node to access under the base station, and a donor cell that allows the relay node to access under the base station adjacent to the base station; and sends the determined information of the donor cell to Relaying the node to notify the relay node that only the measurement information of the donor cell is performed;

The method according to claim 11, wherein the information of the donor cell comprises: one or any combination of cell identification information, cell frequency point information, and identity information of a base station to which the cell belongs.

13. A method for selecting a target cell, the method comprising:

The donor base station determines, according to the received donor attribute information, whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access;

The donor base station selects a target cell that performs cell handover for the relay node from the cell that allows the relay node to access.

A cell measurement information reporting method, the method comprising: The relay node receives information of a donor cell sent by the donor base station, where the donor cell includes a cell that allows the relay node to access under the donor base station, and a cell that allows the relay node to access under the base station adjacent to the donor base station;

After obtaining the measurement information of the neighboring cell of the current cell, the relay node determines whether the neighboring cell is included in the donor cell;

When the relay node determines that the neighboring cell is included in the donor cell, the relay node reports the measurement information of the neighboring cell to the donor base station.

The method according to claim 14, wherein the information of the cell includes:

One or any combination of cell identification information, cell frequency point information, and identification information of a base station to which the cell belongs.

A base station information configuration device, the device comprising:

The device according to claim 16, wherein the configuration unit is further configured to:

The device according to claim 16 or 17, wherein when there are multiple relay nodes in the current network, the donor attribute information further includes:

19. A base station information interaction device, the device comprising:

a receiving unit, configured to receive donor donor attribute information of the local base station sent by the operation and maintenance OAM device, where the donor attribute information includes information about whether the base station allows the relay node to access, and/or whether the cell under the base station is Information that allows the relay node to access;

The device of claim 19, wherein the interaction unit is further configured to:

The device according to claim 19, wherein the interaction unit is specifically configured to:

When a preset trigger event occurs, the donor attribute information of the base station is sent to the other base station.

22. The device of claim 21, wherein the triggering event is:

Receiving donor attribute information sent by the other base station; or Receiving a donor attribute information query message sent by the other base station.

The device according to claim 22, wherein the interaction unit is specifically configured to:

The device according to any one of claims 19 to 24, wherein the interaction unit is specifically configured to: send, by using an X2 interface with the other base station, donor attribute information of the base station to the Other base stations; or,

26. A target cell selection device, the device comprising:

a notification unit, configured to determine, according to the donor attribute information, a donor cell that is allowed to be accessed by the relay node in the base station, and a donor cell that allows the relay node to access under the base station adjacent to the base station; the determined donor cell The information is sent to the relay node to notify the relay node that only the measurement information of the donor cell is up;

The device according to claim 26, wherein the information of the donor cell comprises: one or any combination of cell identification information, cell frequency point information, and identity information of a base station to which the cell belongs.

28. A target cell selection device, the device comprising:

a receiving unit, configured to receive donor donor attribute information of the base station sent by the OAM device, dore attribute information sent by the base station adjacent to the base station, and measurement information of the cell reported by the relay node, where The donor attribute information includes information on whether the base station allows the relay node to access, and/or information on whether the cell under the base station allows the relay node to access;

a determining unit, configured to determine, according to the received donor attribute information, whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access; And a selecting unit, configured to select, from the cell that allows the relay node to access, a target cell that performs cell handover for the relay node.

A cell measurement information reporting device, the device comprising:

The device according to claim 29, wherein the information of the cell includes:

31. A wireless communication system, the system comprising:

a donor base station, configured to receive donor attribute information of the local base station sent by the 0AM device, and donor attribute information sent by the base station adjacent to the base station; and determine, according to the donor attribute information, the access node is allowed to access the base station a donor cell and a donor cell that allows the relay node to access the base station adjacent to the base station, and send the determined information of the donor cell to the relay node; according to the measurement information reported by the relay node to the donor cell, Selecting a target cell for performing cell handover for the relay node;

a relay node, configured to receive information about a donor cell sent by a donor base station; after obtaining measurement information of a neighboring cell of the current cell, determining whether the neighboring cell is included in the donor cell; and determining that the donor cell includes the When the neighboring cell is used, the measurement information of the neighboring cell is reported to the donor base station.

32. A wireless communication system, characterized in that the system comprises:

a donor base station, configured to receive donor donor attribute information of the base station sent by the OAM device, donor attribute information sent by the base station adjacent to the base station, and measurement information of the cell reported by the relay node; according to the received donor The attribute information determines whether each cell corresponding to the measurement information reported by the relay node allows the relay node to access. From the cell that allows the relay node to access, the target cell that performs the cell handover is selected for the relay node.