WO2013159628A1

WO2013159628A1 - Handover method and device

Info

Publication number: WO2013159628A1
Application number: PCT/CN2013/073377
Authority: WO
Inventors: 李秉肇; 陈燕燕
Original assignee: 华为技术有限公司
Priority date: 2012-04-27
Filing date: 2013-03-28
Publication date: 2013-10-31
Also published as: CN103379563B; CN103379563A

Abstract

Provided are a handover method and device. In the embodiments of the present invention, information about a serving cell of a second access network device of UE is obtained by a first access network device, the first access network device and the second access network device belong to different wireless communication systems, so that the first access network device can hand over the UE to the serving cell under the second access network device according to the information about the serving cell, thereby being able to solve the problem of a handover failure in the prior art because a target cell handed over to by a heterogeneous system is not the serving cell of the UE in the heterogeneous system, thereby increasing the handover reliability. In addition, by using the technical solution provided in the present invention, UE does not need to measure an air interface of a heterogeneous system, so that the invalid air interface measurement of the heterogeneous system conducted by the UE and the increasing of the power consumption of the UE can be avoided.

Description

The present application claims priority to Chinese Patent Application No. 201210129073.1, entitled "Switching Method and Apparatus", filed on Apr. 27, 2012, the entire contents of in.

Technical field

The present invention relates to communication technologies, and in particular, to a handover method and apparatus. Background technique

In a different system scenario of a wireless communication system with Carrier Aggregation (CA), the user equipment (UE) can be served by at least two wireless communication systems, that is, the UE can pass each wireless communication system. The serving cell sends an uplink signal to the access network device to which the serving cell belongs, and can also receive a downlink signal from the access network device to which the serving cell belongs by using the serving cell under each wireless communication system.

However, in a different system scenario where the core network device is used as an aggregation control device (ie, aggregation based on the core network device), the target cell of the different system handover may not be the serving cell of the UE in the different system, and thus, the handover fails. Thereby reducing the reliability of the handover. Summary of the invention

Aspects of the present invention provide a handover method and apparatus for improving handover reliability. An aspect of the present invention provides a handover method, including: a first access network device obtains information about a serving cell of a UE under a second access network device, where the first access network device and the second access The network access device belongs to a different wireless communication system; the first access network device switches the UE to a serving cell under the second access network device according to the information of the serving cell. Another aspect of the present invention provides a handover method, including: obtaining, by a UE, information of a serving cell of the UE under a second access network device; and transmitting, by the UE, the serving cell to a first access network device Information, the first access network device and the second access network device belong to different wireless communication systems, so that the first access network device switches the UE to according to the information of the serving cell. a serving cell under the second access network device.

Another aspect of the present invention provides a handover method, including: an aggregation control device obtains information of a serving cell of a UE under a second access network device; and the aggregation control device sends the service to a first access network device Information about the cell, the first access network device and the second access network device belong to different wireless communication systems, such that the first access network device, according to the information of the serving cell, the UE Switching to the service d and the area under the second access network device.

Another aspect of the present invention provides an access network device, including: an acquiring processor, configured to obtain information about a serving cell of a UE under a second access network device, where the access network device and the second The access network device belongs to a different wireless communication system; the handover processor is configured to switch the UE to a serving cell under the second access network device according to the information of the serving cell.

Another aspect of the present invention provides a UE, including: an acquiring processor, configured to obtain information about a serving cell of the UE under a second access network device; and a transmitter, configured to send to the first access network device Sending information of the serving cell, where the first access network device and the second access network device belong to different wireless communication systems, so that the first access network device according to the information of the serving cell, Switching the UE to a serving cell under the second access network device.

Another aspect of the present invention provides an aggregation control device, including: an acquisition processor, configured to obtain information about a serving cell of a UE under a second access network device; and a transmitter, configured to send to the first access network device Sending information of the serving cell, where the first access network device and the second access network device belong to different wireless communication systems, so that the first access network device according to the information of the serving cell, Switching the UE to a serving cell under the second access network device.

As can be seen from the above technical solutions, the reliability of handover can be improved. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a schematic flowchart of a handover method according to an embodiment of the present invention;

2 is a schematic flowchart of a handover method according to another embodiment of the present invention;

3 is a schematic flowchart of a handover method according to another embodiment of the present invention;

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

FIG. 5 is a schematic flowchart of a handover method according to another embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an access network device according to another embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a user equipment according to another embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of an aggregation control device according to another embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The technical solution of the present invention can be applied to at least two wireless communication systems in various wireless communication systems, wherein different communication systems are used herein to refer to different access technologies, and may also be referred to as different standards. Communication Systems. The UE may establish a Radio Access Bearer (RAB) in two or more wireless communication systems, for example: Global System for Mobile Communications (GSM), General Packet Radio Service (General Packet Radio Service, GPRS) system, code division multiple access (Code Division Multiple Access, CDMA) system, CDMA2000 system, Wideband Code Division Multiple Access (WCDMA) system, Long Term Evolution (LTE) system or global microwave access interoperability

(World Interoperability for Microwave Access, WiMAX) system, etc.

The first access network device and the second access network device may be access network devices in any two wireless communication systems, and may be a base station controller (Base Station Controller, BSC) in a GSM system, a GPRS system, or a CDMA system. ), it can also be a Radio Network Controller (RNC) in a CDMA2000 system or a WCDMA system, or an Evolved NodeB (eNodeB) in an LTE system, or an access in a WiMAX network. Network elements such as the Access Service Network Base Station (ASN BS) of the service network.

The aggregation control device may be a core network device in any two wireless communication systems, for example: a mobility management device (ie, a core network control plane) accessed by the first access network device/the second access network device The network element or the gateway device (that is, the core network user plane network element) or the like, or may be a new core network device, which is not limited in this embodiment. The mobile management device may be a Mobile Switching Center (MSC) in a GSM system, a GPRS system or a CDMA system, or may be a General Packet Radio Service (CDMA) in a CDMA2000 system or a WCDMA system. GPRS) Serving GPRS Supporting Node (SGSN), which may also be a Mobility Management Entity (MME) in an LTE system, or a gateway of an access service network in a WiMAX network (Access Service Network Gateway) Network element such as ASN GW); the gateway device may be a Gateway GPRS Supporting Node (GGSN) in a CDMA2000 system or a WCDMA system, or may be a Packet Data Network Gateway (PGW) in the LTE system. It may also be a network element such as an Access Service Network Gateway (ASN GW) in the WiMAX network. It should be noted that the serving cell refers to a serving cell of a connected UE, that is, a cell used for data transmission between an access network device and a connected UE.

Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist, exist alone B These three situations. In addition, the character "," in this article, generally means that the contextual object is an "or" relationship.

FIG. 1 is a schematic flowchart of a handover method according to an embodiment of the present invention, as shown in FIG. 1.

101. The first access network device obtains information about a serving cell of the UE under the second access network device, where the first access network device and the second access network device belong to different wireless communication systems.

It should be noted that the information about the serving cell of the UE under the second access network device may include, but is not limited to, whether there is an indication of the serving cell under the second access network device or the second access network. The service d and the identifier of the area under the device.

It can be understood that: the indication of whether there is a serving cell under the second access network device, or an indication of whether there is a connection with the second access network device.

Optionally, in an optional implementation manner of this embodiment, the UE may serve the UE by using two wireless communication systems (the first wireless communication system and the first wireless communication system), that is, the UE may pass each wireless communication system. The serving cell sends an uplink signal to the access network device to which the serving cell belongs, and can also receive a downlink signal from the access network device to which the serving cell belongs by using the serving cell in each wireless communication system. That is to say, the UE can establish an RAB in two wireless communication systems to perform carrier aggregation.

In a different system scenario in which the core network device is used as an aggregation control device, the aggregation control device or the UE may obtain information of a serving cell in two wireless communication systems (ie, information of a serving cell under the first access network device). And the information about the serving cell in the second access network device. For details, refer to related content in the prior art, and details are not described herein again.

Optionally, in an optional implementation manner of this embodiment, in 101, the first connection The network access device may specifically receive information about the serving cell sent by the aggregation control device. Specifically, the first access network device may specifically receive the information about the serving cell that is sent by the aggregation control device in the process of establishing an RAB for the UE; or, the first access network device may specifically be After the establishment of the RAB, the UE receives the information about the serving cell sent by the aggregation control device, which is not limited in this embodiment. In this way, the first access network device does not need to send a measurement control message to the UE, so as to notify the UE to start the inter-system measurement, thereby preventing the UE from performing invalid inter-system air interface measurement, thereby increasing the UE's Power consumption.

Optionally, in an optional implementation manner of this embodiment, if the aggregation control device is separately configured from the mobility management device that is accessed by the first access network device, in 101, the first access The network device may specifically receive information about the serving cell that is sent by the aggregation control device by the mobility management device that is accessed by the first access network device.

Optionally, in an optional implementation manner of this embodiment, in the 101, the first access network device may specifically receive information about the serving cell sent by the UE. Specifically, the first access network device may specifically be a connection between the UE and the first access network device (for example, a Signalling Radio Bearer (SRB) or an RAB, etc.) and the UE and the second connection. After the connection between the network access devices (for example, SRB or RAB, etc.) is established, the information about the serving cell sent by the UE is received. For example: after the connection between the UE and the first access network device and the connection between the UE and the second access network device are completed, when the UE needs to perform the different system handover, the first access network The device sends a measurement control message to the UE to notify the UE to initiate an inter-system measurement; the first access network device receives a measurement response message or a measurement report sent by the UE, and the measurement response message or the The information of the serving cell is included in the measurement report, which is not limited in this embodiment. In this way, although the first access network device sends a measurement control message to the UE to notify the UE to start the inter-system measurement, the UE does not need to initiate the inter-system measurement, but directly to the first access. The network device sends the measurement response message or the measurement report, so that the UE can prevent the invalid inter-system air interface measurement from being performed, thereby increasing the power consumption of the UE. 102. The first access network device switches the UE to a serving cell under the second access network device according to the information of the serving cell.

It should be noted that, in the present invention, the precondition of the first access network device to switch the UE to the serving cell under the second access network device according to the information of the serving cell is: The UE needs to perform a different system handover from the serving cell under the first access network device to the serving cell under the second access network device, for example, the condition is that the UE has low signal quality in the serving cell under the first access network device. To a certain extent, the detailed description can refer to the related content of the starting conditions of the different system switching in the prior art, and details are not described herein again.

Optionally, in an optional implementation manner of this embodiment, the information about the serving cell is an indication of whether a serving cell under the second access network device exists; and if the information of the serving cell indicates presence The serving cell in the second access network device, in the 102, the first access network device may send a handover message according to the information of the serving cell, where the handover message may include an identifier of any cell. The identifier of the target cell does not include the identifier of any cell, so that the mobility management device accessed by the first access network device modifies the identifier of the target cell in the handover message to the identifier of the serving cell. The subsequent process is the same as the switching process in the prior art. For example, the RAB reconfiguration process is initiated to the second access network device. For details, refer to related content in the prior art, and details are not described herein again. It can be understood that: if the mobility management device accessed by the first access network device is separately configured from the aggregation control device, the mobility management device accessed by the first access network device may be performed by using the aggregation control device The information of the serving cell under the second access network device is obtained, for example, the identifier of the serving cell under the second access network device.

Optionally, in an optional implementation manner of this embodiment, the information about the serving cell is an identifier of a serving cell in the second access network device. In 102, the first access network device Specifically, the handover message is sent according to the information of the serving cell, where the handover message includes an identifier of the serving cell indicated by the information of the serving cell. The subsequent process is the same as the handover process in the prior art, for example: initiating an RAB reconfiguration process to the second access network device, For a detailed description, refer to related content in the prior art, and details are not described herein again.

In this embodiment, the information about the serving cell of the UE under the second access network device is obtained by the first access network device, and the first access network device and the second access network device belong to different wireless communications. The system is configured to enable the first access network device to switch the UE to the serving cell under the second access network device according to the information of the serving cell, which can solve the prior art handover due to different systems. The target cell is not the handover failure caused by the UE in the serving cell of the different system, thereby improving the reliability of the handover. In addition, by using the technical solution provided by the present invention, the UE does not need to perform the measurement of the different system air interface, and can prevent the UE from performing invalid inter-system air interface measurement, thereby increasing the power consumption of the UE.

FIG. 2 is a schematic flowchart of a handover method according to another embodiment of the present invention, as shown in FIG. 2. 201. The UE obtains information about a serving cell of the UE under the second access network device.

In a different system scenario where the core network device is used as an aggregation control device, the UE may obtain information of a serving cell in two wireless communication systems (ie, information of a serving cell under the first access network device and a second access network) For details of the information about the serving cell under the device, refer to related content in the prior art, and details are not described herein again. 202. The UE sends the information about the serving cell to a first access network device, where the first access network device and the second access network device belong to different wireless communication systems, so that the first The access network device switches the UE to the serving cell under the second access network device according to the information of the serving cell.

It should be noted that, in the present invention, the precondition of the first access network device to switch the UE to the serving cell under the second access network device according to the information of the serving cell is: The UE needs to perform the different system switching from the serving cell in the first access network device to the serving cell in the second access network device. For details, refer to related content of the starting condition of the different system switching in the prior art. No longer.

Optionally, in an optional implementation manner of this embodiment, in 202, the UE may be specifically connected between the UE and the first access network device and between the UE and the second access network device. After the connection is established, the information about the serving cell is sent to the first access network device. For example, after the connection between the UE and the first access network device and the connection between the UE and the second access network device are completed, when the UE needs to perform the different system handover, the UE receives the a measurement control message sent by the access network device to notify the UE to initiate an inter-system measurement; the UE sends a measurement response message or a measurement report to the first access network device, where the measurement response message or The information about the serving cell is included in the measurement report, which is not limited in this embodiment. In this way, although the UE receives the measurement control message sent by the first access network device to notify the UE to start the inter-system measurement, the UE does not need to initiate the inter-system measurement, but directly to the first connection. The network access device sends the measurement response message or the measurement report, so that the UE can prevent the invalid system air interface measurement from being performed, thereby increasing the power consumption of the UE.

Optionally, in an optional implementation manner of this embodiment, the information about the serving cell is an indication of whether a serving cell under the second access network device exists; and if the information of the serving cell indicates presence The serving cell in the second access network device, where the first access network device may send a handover message according to the information of the serving cell, where the handover message may include an identifier of any cell as an identifier of the target cell. Or does not contain the identity of any cell, so that The mobility management device that is accessed by the first access network device modifies the identity of the target cell in the handover message to the identifier of the serving cell. The subsequent process is the same as the handover process in the prior art. For example, the RAB reconfiguration process is initiated to the second access network device. For details, refer to related content in the prior art, and details are not described herein again. It can be understood that: if the mobility management device accessed by the first access network device is separately configured from the aggregation control device, the mobility management device accessed by the first access network device may be performed by using the aggregation control device The information of the serving cell under the second access network device is obtained, for example, the target i of the serving cell under the second access network device.

Optionally, in an optional implementation manner of this embodiment, the information about the serving cell is an identifier of a serving cell in the second access network device, and the first access network device may be specifically configured according to the The information about the serving cell sends a handover message, where the handover message includes an identifier of the serving cell indicated by the information of the serving cell. The subsequent process is the same as the handover process in the prior art. For example, the RAB reconfiguration process is initiated to the second access network device. For details, refer to related content in the related art, and details are not described herein again.

In this embodiment, the information about the serving cell of the UE under the second access network device is obtained by the UE, and then the information of the serving cell is sent to the first access network device, where the first access network device and The second access network device belongs to a different wireless communication system, so that the first access network device switches the UE to the service under the second access network device according to the information of the serving cell. The cell can solve the handover failure caused by the target cell in the prior art because the UE is not in the serving cell of the different system, thereby improving the reliability of the handover. In addition, the technical solution provided by the present invention, the UE does not need to perform the measurement of the different system air interface, and can prevent the UE from performing invalid inter-system air interface measurement, thereby increasing the power consumption of the UE.

In order to make the method provided by the embodiment of the present invention clearer, the WCDMA system and the LTE system jointly serve the UE as an example. FIG. 3 is a schematic flowchart of a handover method according to another embodiment of the present invention. In this embodiment, a GGSN and a PGW are combined as an aggregation control device. As shown in FIG. 3, the switching method in this embodiment may include: 301. The UE establishes a connection in the WCDMA system (for example, SRB or RAB between the UE and the RNC, etc.);

302. The UE establishes a connection in the LTE system (for example, an SRB or an RAB between the UE and the eNodeB, etc.);

It can be understood that the order of execution of 301 and 302 is not limited in this embodiment.

303. When the UE needs to perform the inter-system handover from the WCDMA system to the LTE system, the RNC sends a measurement control message to the UE to notify the UE to start the inter-system measurement.

304. When the UE finds that the UE establishes a connection between the WCDMA system and the LTE system, and carries the identifier of the obtained serving cell of the UE under the eNodeB in the measurement response message or the measurement report, and sends the message to the RNC.

305. The RNC sends a switching message to the SGSN according to the identifier of the serving cell in the eNodeB, where the handover message includes an identifier of the serving cell.

306. The SGSN performs a subsequent handover process.

Optionally, the SGSN may further interact with the aggregation control device to release the RAB established by the UE in the WCDMA system according to the type of bearer in the aggregation. The type of the bearer in the aggregation can be divided into two types, one is a dual RAT coordinated bearer, that is, the two RATs jointly carry the same service; the other is a single RAT, and one RAT carries one service separately.

So far, the different system handover in the scenario of the UE in which the GGSN and the PGW are combined as the aggregation control device is implemented, that is, the UE is switched by the serving cell under the RNC to the serving cell under the eNodeB.

In this embodiment, the UE obtains the identifier of the serving cell of the UE under the eNodeB, and then sends the identifier of the serving cell to the RNC, where the RNC and the eNodeB belong to different radio access networks, so that the The RNC switches the UE to the serving cell under the eNodeB according to the identifier of the serving cell, and can solve the handover failure caused by the target cell in the prior art that the UE is not in the serving cell of the different system in the prior art. Thereby improving the cut The reliability of the exchange. In addition, with the technical solution provided by the present invention, the UE does not need to perform the measurement of the different system air interface, and can prevent the UE from performing invalid inter-system air interface measurement, thereby increasing the power consumption of the UE.

FIG. 4 is a schematic flowchart diagram of a handover method according to another embodiment of the present invention, as shown in FIG. 4.

401. The aggregation control device obtains information about a serving cell of the UE under the second access network device. It should be noted that the information about the serving cell of the UE under the second access network device may include, but is not limited to, whether there is an indication of the serving cell under the second access network device or the second access network. The service d and the identifier of the area under the device.

In a different system scenario in which the core network device is used as the aggregation control device, the aggregation control device may obtain information about the serving cell in the two wireless communication systems (ie, the information of the serving cell under the first access network device and the second connection) For details of the information about the serving cell in the network access device, refer to the related content in the prior art, and details are not described herein again.

402. The aggregation control device sends information about the serving cell to a first access network device, where the first access network device and the second access network device belong to different wireless communication systems, so that the The first access network device switches the UE to a serving cell under the second access network device according to the information of the serving cell.

It should be noted that, in the present invention, the precondition for the first access network device to switch the UE to the serving cell under the second access network device according to the information of the serving cell is: The UE needs to perform a different system handover from the serving cell under the first access network device to the serving cell under the second access network device, for example, the condition is that the UE is in the serving cell under the first access network device. The quality is lower than a certain level. For details, refer to related content of the startup conditions of the different system switching in the prior art, and details are not described herein again.

Optionally, in an optional implementation manner of this embodiment, in 402, the aggregation control device may specifically send the serving cell to the first access network device in a process of establishing an RAB for the UE. For example, the aggregation control device may further send the information about the serving cell to the first access network device after the RAB is established for the UE, which is not limited in this embodiment. In this way, the first access network device does not need to send a measurement control message to the UE, so as to notify the UE to start the inter-system measurement, thereby preventing the UE from performing invalid inter-system air interface measurement, thereby increasing the UE's Power consumption.

Optionally, in an optional implementation manner of this embodiment, if the aggregation control device is separately configured from the mobility management device that is accessed by the first access network device, then in 402, the aggregation control device is specifically The information about the service d and the area may be sent to the first access network device by the mobility management device accessed by the first access network device.

Optionally, in an optional implementation manner of this embodiment, the information about the serving cell is an indication of whether a serving cell under the second access network device exists; and if the information of the serving cell indicates presence The serving cell in the second access network device, where the first access network device may send a handover message according to the information of the serving cell, where the handover message may include an identifier of any cell as an identifier of the target cell. Or the identifier of any cell is not included, so that the mobility management device accessed by the first access network device modifies the identifier of the target cell in the handover message to the identifier of the serving cell. The subsequent process is the same as the handover process in the prior art. For example, the RAB reconfiguration process is initiated to the second access network device. For details, refer to related content in the prior art, and details are not described herein again. It can be understood that: if the mobility management device accessed by the first access network device is separately configured from the aggregation control device, the mobility management device accessed by the first access network device may be performed by using the aggregation control device Interact, get the first Information about the serving cell in the second access network device, for example: the target i of the serving cell under the second access network device.

In this embodiment, the information about the serving cell of the UE under the second access network device is obtained by the aggregation control device, and then the information of the serving cell is sent to the first access network device, where the first access network device and The second access network device belongs to a different wireless communication system, so that the first access network device switches the UE to the service under the second access network device according to the information of the serving cell. The cell can solve the handover failure caused by the target cell in the prior art because the UE is not in the serving cell of the different system, thereby improving the reliability of the handover. In addition, with the technical solution provided by the present invention, the UE does not need to perform the measurement of the different system air interface, and can prevent the UE from performing invalid inter-system air interface measurement, thereby increasing the power consumption of the UE.

In order to make the method provided by the embodiment of the present invention clearer, the WCDMA system and the LTE system jointly serve the UE as an example. FIG. 5 is a schematic flowchart of a handover method according to another embodiment of the present invention. In this embodiment, a GGSN and a PGW are jointly configured as an aggregation control device. As shown in FIG. 5, it is a schematic flowchart of a handover method according to this embodiment.

501. The UE establishes an RAB in the WCDMA system.

502. The UE establishes an RAB in the LTE system.

It can be understood that the order in which 501 and 502 are not executed is not limited in this embodiment.

503. The aggregation control device finds that the UE establishes an RAB in the WCDMA system and the LTE system, and the obtained UE has the information of the serving cell under the eNodeB, and sends the information to the RNC through the SGSN. The transmission, and the information that the obtained UE has a serving cell under the RNC, is transmitted to the eNodeB through the MME.

504. When the UE needs to perform the inter-system handover from the WCDMA system to the LTE system, the RNC sends a handover message to the SGSN according to the information of the serving cell under the eNodeB, where the handover message includes the identifier of any cell or does not include any The identity of the cell.

505. The SGSN, according to the identifier of the monthly service cell of the UE under the eNodeB, modifies the identifier of the any cell to the identifier of the serving cell, or adds the identifier of the serving cell, and performs a subsequent handover process. .

Optionally, the SGSN may further interact with the aggregation control device to release the RAB established by the UE in the WCDMA system according to the type of bearer in the aggregation. The type of the bearer in the aggregation can be divided into two types, one is a dual radio access technology (Radio Acess Technology, RAT) cooperative bearer, that is, the two RATs jointly carry the same service; A RAT carries a single service.

In this embodiment, the information about the presence of the serving cell by the UE under the eNodeB is obtained by the aggregation control device, and then the information of the existing serving cell is sent to the RNC, where the RNC and the eNodeB belong to different radio access networks, so that The RNC switches the UE to the serving cell under the eNodeB according to the information of the serving cell, and can solve the handover failure in the prior art that the target cell that is different from the UE is not in the serving cell of the different system in the prior art. , thereby improving the reliability of the handover. In addition, with the technical solution provided by the present invention, the UE does not need to perform the measurement of the different system air interface, and can prevent the UE from performing invalid inter-system air interface measurement, thereby increasing the power consumption of the UE.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present invention is not The described sequence of actions is limited in that certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details are not described in detail in an embodiment, and the related descriptions of other embodiments can be referred to.

FIG. 6 is a schematic structural diagram of an access network device according to another embodiment of the present invention, which may be

The base station controller in the GSM system, the GPRS system or the CDMA system may also be a radio network controller in the CDMA2000 system or the WCDMA system, an evolved base station in the LTE system, or an access service in the WiMAX network. Network elements such as base stations of the network. As shown in FIG. 6, the access network device of this embodiment may include an acquisition processor 61 and a handover processor 62. The acquiring processor 61 is configured to obtain information about a serving cell of the UE under the second access network device, where the access network device and the second access network device belong to different wireless communication systems; And configured to switch the UE to a serving cell under the second access network device according to the information of the serving cell.

Optionally, in an optional implementation manner of this embodiment, the acquiring processor 61 may specifically receive information about the serving cell sent by the aggregation control device. Specifically, the acquiring processor 61 may specifically receive the information about the serving cell that is sent by the aggregation control device in the process that the access network device establishes the RAB for the UE; or, the acquiring processor 61 may specifically be in the After the network access device establishes the RAB for the UE, the information about the serving cell sent by the aggregation control device is received, which is not limited in this embodiment. In this way, the access network device does not need to send a measurement control message to the UE, so as to notify the UE to start the inter-system measurement, thereby avoiding The UE performs an invalid inter-system air interface measurement, thereby increasing the power consumption of the UE.

Optionally, in an optional implementation manner of this embodiment, if the aggregation control device is separately configured from the mobility management device that is accessed by the access network device, the acquiring processor 61 may specifically receive the aggregation control device. The information about the serving cell sent by the mobility management device accessed by the access network device.

Optionally, in an optional implementation manner of the embodiment, the acquiring processor 61 may specifically receive information about the serving cell sent by the UE. Specifically, the acquiring processor 61 may specifically be a connection between the UE and the access network device (for example, a Signalling Radio Bearer (SRB) or an RAB, etc.) and between the UE and the second access network device. After the connection (for example, SRB or RAB, etc.) is established, the information about the serving cell sent by the UE is received. For example, after the connection between the UE and the access network device and the connection between the UE and the second access network device are established, when the UE needs to perform the different system handover, the acquisition processor 61 sends the signal to the UE. And measuring a control message, to notify the UE to initiate an inter-system measurement; and then receiving a measurement response message or a measurement report sent by the UE, where the measurement response message or the measurement report includes the serving cell The information in this embodiment is not limited thereto. In this way, although the access network device sends a measurement control message to the UE to notify the UE to initiate the inter-system measurement, the UE does not need to initiate the inter-system measurement, but directly sends the device to the access network device. The measurement response message or the measurement report is described, so that the UE can prevent the invalid inter-system air interface measurement from being performed, thereby increasing the power consumption of the UE.

Optionally, in an optional implementation manner of this embodiment, the information about the serving cell is an indication of whether a serving cell under the second access network device exists; and if the information of the serving cell indicates presence For the serving cell in the second access network device, the handover processor 62 may specifically send a handover message according to the information of the serving cell, where the handover message may include the identifier of any cell as the identifier of the target cell or does not include any The identifier of the cell is such that the mobility management device accessed by the access network device modifies the identifier of the target cell in the handover message to the identifier of the serving cell. The subsequent process is the same as the switching process in the prior art, for example: The second access network device initiates the RAB reconfiguration process and the like. For details, refer to related content in the prior art, and details are not described herein again. It can be understood that: if the mobility management device accessed by the access network device is separately configured from the aggregation control device, the mobility management device accessed by the access network device can obtain an interaction by interacting with the aggregation control device. The information about the serving cell under the second access network device, for example, the identifier of the serving cell under the second access network device.

Optionally, in an optional implementation manner of this embodiment, the information of the serving cell is an identifier of a serving cell in the second access network device, and the handover processor 62 may be specifically configured according to the serving cell. And transmitting a handover message, where the handover message includes an identifier of the serving cell indicated by the information of the serving cell. The subsequent process is the same as the handover process in the prior art, for example, the RAB reconfiguration process is initiated to the second access network device. For details, refer to related content in the prior art, and details are not described herein again.

In this embodiment, the access network device obtains information about the serving cell of the UE under the second access network device by using the acquiring processor, where the access network device and the second access network device belong to different wireless communication systems. The handover processor is configured to switch the UE to the serving cell under the second access network device according to the information of the serving cell, which can solve the problem that the target cell in the prior art is different from the UE in the prior art. The handover failure caused by the serving cell of the system improves the reliability of the handover. In addition, with the technical solution provided by the present invention, the UE does not need to perform heterogeneous air interface measurement, and can prevent the UE from performing invalid inter-system air interface measurement, thereby increasing the power consumption of the UE.

FIG. 7 is a schematic structural diagram of a user equipment according to another embodiment of the present invention. As shown in FIG. 7, the user equipment in this embodiment may include an acquiring processor 71 and a transmitter 72. The acquiring processor 71 is configured to obtain information about the serving cell of the UE under the second access network device, where the transmitter 72 is configured to send information about the serving cell to the first access network device, where the first The access network device and the second access network device belong to different wireless communication systems, so that the first access network device switches the UE to the second access according to the information of the serving cell. The serving cell under the network device. It should be noted that the information about the serving cell of the UE under the second access network device may include, but is not limited to, whether there is an indication of the serving cell under the second access network device or the second access network. The service d and the identifier of the area under the device.

Optionally, in an optional implementation manner of this embodiment, the transmitter 72 may specifically be after the connection between the UE and the first access network device and the connection between the UE and the second access network device are established. Sending information of the serving cell to the first access network device. For example: after the connection between the UE and the first access network device and the connection between the UE and the second access network device are completed, when the UE needs to perform the different system handover, the transmitter 72 receives the And a measurement control message sent by the access network device, to notify the UE to initiate the inter-system measurement; and then, send a measurement response message or a measurement report to the first access network device, where the measurement response message or the The information of the serving cell is included in the measurement report, which is not limited in this embodiment. In this way, although the UE receives the measurement control message sent by the first access network device to notify the UE to start the inter-system measurement, the UE does not need to initiate the inter-system measurement, but directly to the first connection. The network access device sends the measurement response message or the measurement report, so that the UE can prevent the invalid system air interface measurement from being performed, thereby increasing the power consumption of the UE.

In this embodiment, the UE obtains information about the serving cell of the UE under the second access network device by using the acquiring processor, and then the sender sends the information of the serving cell to the first access network device, where the a wireless communication system in which the access network device and the second access network device belong to each other, so that the first access network device switches the UE to the second connection according to the information of the serving cell. The serving cell in the network access device can solve the handover failure caused by the target cell in the prior art that the UE is not in the serving cell of the different system in the prior art, thereby improving the reliability of the handover. In addition, with the technical solution provided by the present invention, the UE does not need to perform the measurement of the different system air interface, and can avoid the U E performing the invalid system air interface measurement, thereby increasing the power consumption of the U E .

FIG. 8 is a schematic structural diagram of an aggregation control device according to another embodiment of the present invention, as shown in FIG. 8 As shown, the aggregation control device of the present embodiment may include an acquisition processor 81 and a transmitter 82. The obtaining processor 81 is configured to obtain information about a serving cell of the UE under the second access network device, where the transmitter 82 is configured to send information about the serving cell to the first access network device, where the first access The network device and the second access network device belong to different wireless communication systems, so that the first access network device switches the UE to the second access network device according to the information of the serving cell. The next service area.

Optionally, in an optional implementation manner of the embodiment, the transmitter 82 may specifically send the information about the serving cell to the first access network device in a process of establishing an RAB for the UE; or, send Specifically, the device 82 may further send the information about the serving cell to the first access network device after the RAB is established for the UE, which is not limited in this embodiment. In this way, the first access network device does not need to send a measurement control message to the UE, so as to notify the UE to start the inter-system measurement, thereby preventing the UE from performing invalid inter-system air interface measurement, thereby increasing the UE's Power consumption.

Optionally, in an optional implementation manner of this embodiment, if the aggregation control device is separately configured from the mobility management device that is accessed by the first access network device, the transmitter 82 may specifically pass the first The mobility management device accessed by the access network device sends the information of the monthly service cell to the first access network device.

In this embodiment, the aggregation control device obtains information about the serving cell of the UE under the second access network device by using the acquiring processor, and then the sender sends the information of the serving cell to the first access network device, where the a wireless communication system different from the access network device and the second access network device, so that the first access network device, according to the information of the serving cell, the UE Switching to the serving cell under the second access network device can solve the handover failure caused by the target cell in the prior art that the UE is not in the serving cell of the different system in the prior art, thereby improving the reliability of the handover. In addition, with the technical solution provided by the present invention, the UE does not need to perform the measurement of the different system air interface, and can prevent the UE from performing invalid inter-system air interface measurement, thereby increasing the power consumption of the UE.

A person skilled in the art can clearly understand that the specific working process of the system, the device and the unit described above can be referred to the corresponding process in the foregoing method embodiments for the convenience and brevity of the description, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form. The components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a hardware plus software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention is essential or the part contributing to the prior art or the technical side. All or part of the case may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or processing A processor performs all or part of the steps of the method described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A switching method, comprising:

The first access network device obtains the information of the serving cell of the user equipment UE under the second access network device, where the first access network device and the second access network device belong to different wireless communication systems;

The first access network device switches the UE to a serving cell under the second access network device according to the information of the serving cell.

The method according to claim 1, wherein the first access network device obtains the information of the serving cell of the UE under the second access network device, including:

Receiving, by the first access network device, information about the serving cell sent by the aggregation control device; or

The first access network device receives information about the serving cell sent by the UE.

The method according to claim 2, wherein the receiving, by the first access network device, the information of the serving cell sent by the aggregation control device includes:

And the first access network device receives information about the serving cell that is sent by the mobility management device that is accessed by the aggregation control device by using the first access network device.

The method according to claim 2, wherein the receiving, by the first access network device, the information about the serving cell sent by the UE includes:

Sending, by the first access network device, a measurement control message to the U E;

The first access network device receives a measurement response message or a measurement report sent by the UE, where the measurement response message or the measurement report includes information about the serving cell.

The method according to any one of claims 1 to 4, wherein the information of the serving cell is an indication of whether a serving cell under the second access network device exists.

If the information of the serving cell indicates that the serving cell under the second access network device exists, the first access network device switches the UE to the second access according to the information of the serving cell The service cell under the network device, including: The first access network device sends a handover message according to the information of the serving cell, so that the mobility management device accessed by the first access network device modifies the identifier of the target cell in the handover message to The identity of the serving cell.

The method according to any one of claims 1 to 4, wherein the information of the serving cell is an identifier of a serving cell under the second access network device; the first access network The device, according to the information about the serving cell, the UE is switched to the serving cell under the second access network device, including:

The first access network device sends a handover message according to the information of the serving cell, where the handover message includes an identifier of the serving cell.

The method according to any one of claims 2 to 6, wherein the aggregation control device comprises a mobility management device or a gateway device accessed by the first access network device, or A mobile management device or gateway device accessed by the access network device.

8. A handover method, comprising:

The user equipment UE obtains the information of the serving cell of the UE under the second access network device; the UE sends the information of the serving cell to the first access network device, where the first access network device and the The second access network device belongs to a different wireless communication system, so that the first access network device switches the UE to the serving cell under the second access network device according to the information of the serving cell.

The method according to claim 8, wherein the information about the serving cell sent by the UE to the first access network device includes:

Receiving, by the UE, a measurement control message sent by the first access network device;

The UE sends a measurement response message or a measurement report to the first access network device, where the measurement response message or the measurement report includes information about the serving cell.

The method according to claim 8 or 9, wherein the information of the serving cell is an indication of whether there is a serving cell under the second access network device;

If the information of the serving cell indicates that the service under the second access network device is small And the first access network device, according to the information of the serving cell, to switch the UE to the serving cell under the second access network device, including:

The first access network device sends a handover message according to the information of the serving cell, so that the mobility management device accessed by the first access network device modifies the identifier of the target cell in the handover message to The identity of the serving cell.

The method according to claim 8 or 9, wherein the information of the serving cell is an identifier of a serving cell under the second access network device; The information about the serving cell, the handover of the UE to the serving cell under the second access network device, includes:

12. A switching method, comprising:

The aggregation control device obtains information about the serving cell of the user equipment UE under the second access network device;

The aggregation control device sends the information of the serving cell to the first access network device, where the first access network device and the second access network device belong to different wireless communication systems, so that the first The access network device switches the UE to the serving cell under the second access network device according to the information of the serving cell.

The method according to claim 12, wherein the sending, by the aggregation control device, the information of the serving cell to the first access network device includes:

The aggregation control device sends the information of the service d and the area to the first access network device by using the mobility management device accessed by the first access network device.

The method according to claim 12 or 13, wherein the information of the serving cell is an indication of whether a serving cell under the second access network device exists.

If the information of the serving cell indicates that a serving cell under the second access network device exists, the first access network device switches the UE to the The serving cell under the second access network device includes:

The method according to claim 12 or 13, wherein the information of the serving cell is an identifier of a serving cell under the second access network device; The information of the serving cell, the UE is switched to the serving cell under the second access network device, and includes:

The method according to any one of claims 12 to 15, wherein the aggregation control device comprises a mobility management device or a gateway device accessed by the first access network device, or A mobile management device or gateway device accessed by the access network device.

17. An access network device, comprising:

Obtaining a processor, configured to obtain information about a serving cell of the user equipment UE under the second access network device, where the access network device and the second access network device belong to different wireless communication systems; And configured to switch the UE to a serving cell under the second access network device according to the information of the serving cell.

The access network device according to claim 17, wherein the acquisition processor is specifically configured to:

Receiving information about the serving cell sent by the aggregation control device; or

Receiving information about the serving cell sent by the UE.

The access network device according to claim 18, wherein the acquisition processor is specifically configured to:

Receiving, by the aggregation control device, information of the monthly service cell sent by the mobility management device accessed by the access network device.

And sending a measurement control message to the UE, and receiving a measurement response message or a measurement report sent by the UE, where the measurement response message or the measurement report includes information about the serving cell.

The access network device according to any one of claims 17 to 20, wherein the information of the serving cell is an indication of whether a serving cell under the second access network device exists; The information about the serving cell indicates that the serving cell under the second access network device exists, and the switching processor is specifically used to

And transmitting, according to the information of the serving cell, a handover message, so that the mobility management device accessed by the access network device modifies the identity of the target cell in the handover message to the identity of the service cell.

The access network device according to any one of claims 17 to 20, wherein the information of the serving cell is an identifier of a serving cell under the second access network device; Specific to

And transmitting, according to the information of the serving cell, a handover message, where the handover message includes an identifier of the serving cell.

A user equipment (UE), comprising:

Obtaining a processor, configured to obtain information about a serving cell of the UE under the second access network device;

a transmitter, configured to send information about the serving cell to a first access network device, where the first access network device and the second access network device belong to different wireless communication systems, so that the first The access network device switches the UE to the serving cell under the second access network device according to the information of the serving cell.

The UE according to claim 23, wherein the transmitter is specifically configured to receive a measurement control message sent by the first access network device, and to the first access The network device sends a measurement response message or a measurement report, where the measurement response message or the measurement report includes information about the serving cell.

25. An aggregation control device, comprising:

Obtaining a processor, configured to obtain information about a serving cell of the user equipment UE under the second access network device;

The aggregation control device according to claim 25, wherein the transmitter is specifically used for

And transmitting, by the mobility management device that is accessed by the first access network device, information about the serving cell to the first access network device.

The aggregation control device according to claim 25 or 26, wherein the aggregation control device comprises a mobility management device or a gateway device accessed by the first access network device, or the second connection A mobility management device or gateway device accessed by the access device.