WO2016019540A1

WO2016019540A1 - Network mobility optimizing method, device and system

Info

Publication number: WO2016019540A1
Application number: PCT/CN2014/083868
Authority: WO
Inventors: 张宏卓; 罗海燕
Original assignee: 华为技术有限公司
Priority date: 2014-08-07
Filing date: 2014-08-07
Publication date: 2016-02-11
Also published as: CN105493548B; CN105493548A

Abstract

The present invention is suitable for the technical field of wireless communications. Provided in an embodiment of the present invention are a network mobility optimizing method, device and system capable of reducing unnecessary switching between cells when the cell to which a UE belongs has a high load, the method comprising: when the UE switches from a source cell to a target cell, and the target cell distributes 3GPP network traffic to a non-3GPP network, the UE acquires the time length of an interval, the time length of the interval being a time difference between the time when the UE switches to the target cell and the time when the UE distributes the 3GPP network traffic via the non-3GPP network in the target cell; and the UE transmits the time length of the interval to a target control node, the target control node being a control node to which the target cell belongs.

Description

Method, device and system for network mobility optimization

The present invention relates to the field of wireless communications, and in particular, to a method, apparatus, and system for network mobility optimization.

Background technique

With the rapid development of User Equipment (UE) and mobile applications, the rapid growth of mobile data traffic has made it increasingly difficult for existing 3rd Generation Partnership Project (3GPP) networks to meet data traffic growth. Demand. To solve this problem, the prior art uses a non-3GPP network to carry some 3GPP network traffic, such as a wireless local area network (WLAN) to carry part of 3GPP network traffic, to alleviate the traffic of the existing 3GPP network. load.

When a non-3GPP network is used to carry part of the 3GPP network traffic, the UE usually uses the Radio Access Network (RAN) auxiliary parameter of the cell to which the UE belongs, and the auxiliary parameter actually measured by the UE, combined with the RAN rule or access. The network discovery and selection function (ANDSF) policy performs the selection of the non-3GPP network, and then the traffic of the 3GPP network is offloaded through the non-3GPP network. Therefore, the rationality of the auxiliary parameters of the cell to which the UE belongs directly affects Whether the UE can offload network traffic of part of the 3GPP network through the non-3GPP network in the cell. If the auxiliary parameter of the cell to which the UE belongs is set properly, the UE may carry part of the 3GPP network traffic through the non-3GPP network when the cell to which the UE belongs is high; and if the auxiliary parameter of the cell to which the UE belongs is unreasonable, the UE When the cell load is high, the UE cannot carry some 3GPP network traffic through the non-3GPP network in the cell to which the cell belongs, but the network side needs to use the handover to switch some UEs of the source cell from the source cell to the target cell to mitigate the source. The load of the cell, however this leads to the occurrence of unnecessary inter-cell handover. On the one hand, excessive unnecessary signaling load will be introduced to increase the signaling overhead of the system; on the other hand, if cell handover fails during cell handover, the user experience will be reduced.

Summary of the invention The embodiment of the invention provides a method, a device and a system for optimizing network mobility, which can reduce the occurrence of unnecessary handover between cells when the cell load of the UE belongs to a higher load.

To achieve the above objective, the embodiments of the present invention provide the following solutions:

In a first aspect, a user equipment UE is provided, where the UE is handed over from a source cell to a target cell, and the third-generation partner plan 3GPP network traffic is offloaded to a non-3GPP network in the target cell. The UE includes: an acquiring unit and a sending unit;

The acquiring unit is configured to acquire an interval length, where the interval time is a time when the UE switches to the target cell, and the UE uses the non-3GPP network to send the 3GPP network traffic to the target cell in the target cell. The time difference of the time when the splitting is performed; the sending unit is configured to send the interval length to the target control node, where the target control node is a control node to which the target cell belongs.

In a first possible implementation manner of the first aspect, in combination with the first aspect, the moment that the UE offloads the 3GPP network traffic by using the non-3GPP network by the target cell includes:

And determining, by the UE, the time when the target cell is used to offload the 3GPP network traffic by using the non-3GPP network; or

And the time when the UE completes offloading the designated service to the non-3GPP network in the target cell.

In a second possible implementation manner of the first aspect, in combination with the first aspect or the first possible implementation manner of the first aspect, the moment that the UE switches to the target cell includes:

Receiving, by the U E, a handover command message sent by the source cell or a message equivalent to a message of the handover command; or

a time when the UE completes a random access procedure in the target cell; or a moment when the UE successfully sends a handover complete message or a message equivalent to a handover complete message in the target cell.

In a third possible implementation manner of the first aspect, in combination with the first aspect to the second possible implementation manner of the first aspect, if the target cell is in a 3GPP network of a long-term evolution LTE system, the target control node is specifically Target base station; If the target cell is in a 3GPP network of the Universal Mobile Telecommunications System (UMTS) system, the target control node is specifically a target radio network controller RNC.

In a second aspect, a target control node is provided, where the target device is switched from a source cell to a target cell, and the third-generation partner plan 3GPP network traffic is offloaded to the non-3GPP network in the target cell, where the target The control node is a control node to which the target cell belongs, and the target control node includes: a receiving unit, a determining unit, and a sending unit;

The receiving unit is configured to receive an interval length of the UE, where the interval length is a time when the UE switches to the target cell, and the UE passes the non-3GPP network in the target cell. a time difference of a time at which the 3GPP network traffic is split;

The determining unit is configured to determine whether the interval length is less than a first preset threshold;

The sending unit is configured to send the first indication message to the source control node or the single wireless controller SRC, if the target control node determines that the interval length is less than the first preset threshold, the first indication message And indicating that the UE has an unnecessary handover, where the source control node is a control node to which the source cell belongs.

In a first possible implementation manner of the second aspect, in combination with the second aspect, the moment that the UE offloads the 3GPP network traffic by using the non-3GPP network by the target cell includes:

Determining, at the target cell, a time at which the 3GPP network traffic is offloaded by the non-3GPP network;

Or,

In a second possible implementation manner of the second aspect, in combination with the second aspect or the first possible implementation manner of the second aspect, the moment that the UE switches to the target cell includes:

Receiving, by the UE, a handover command message sent by the source cell or a message equivalent to a handover command message; or The moment when the UE completes the random access procedure in the target cell; or the moment when the UE successfully sends a handover complete message or a message equivalent to the handover complete message in the target cell.

In a third possible implementation manner of the second aspect, in combination with the second aspect, the second possible implementation manner of the second aspect, the receiving unit is further configured to send, by the sending unit, the first indication message to the source control After receiving the first message sent by the source control node, the first message is used to request a second radio access network RAN auxiliary parameter, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

The sending unit is further configured to send a second message to the source control node, where the second message carries the second RAN auxiliary parameter.

In a fourth possible implementation manner of the second aspect, in combination with the third possible implementation manner of the second aspect, the first message carries a first RAN auxiliary parameter, where the first RAN auxiliary parameter is the first source cell RAN auxiliary parameters of the source cell.

In a fifth possible implementation manner of the second aspect, in combination with the second aspect, the fourth possible implementation manner of the second aspect, the receiving unit is further configured to send, by the sending unit, the first indication message to the source control Receiving, by the node or the S RC, a fourth message sent by the source control node, where the fourth message carries the updated first radio access network RAN auxiliary parameter, where the first RAN auxiliary parameter is the source cell RAN auxiliary parameters.

In a sixth possible implementation manner of the second aspect, in combination with the fifth possible implementation manner of the second aspect, the target control node further includes an update unit;

The updating unit is configured to: after the receiving unit receives the fourth message sent by the source control node, update the second RAN auxiliary parameter according to the updated first RAN auxiliary parameter, the second RAN auxiliary parameter Is the RAN auxiliary parameter of the target cell.

In a seventh possible implementation manner of the second aspect, in combination with the second aspect, the fourth possible implementation manner of the second aspect, the target control node further includes an update unit, where the receiving unit is further configured to After the sending unit sends the first indication message to the source control node or the S RC, the fifth message sent by the source control node is received, where the fifth message carries the modified value of the first RAN auxiliary parameter and the suggestion of the second RAN auxiliary parameter. Modifying a value, the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell, The second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell, and the updating unit is configured to update the first according to a modified value of the first auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter. Two RAN auxiliary parameters.

In the eighth possible implementation manner of the second aspect, in combination with the second aspect to the seventh possible implementation manner of the second aspect, if the source cell and the target cell are both in a long-term evolution LTE standard 3GPP network, The source control node is specifically a source base station, and the target control node is specifically a target base station;

If the source cell and the target cell are both in the 3GPP network of the UMTS system, the source control node is specifically a source radio network controller RNC, and the target control node is specifically a target RNC;

If the source cell is in the 3GPP network of the LTE system, the target cell is in the network of the UMTS system, the source control node is specifically a source base station, and the target control node is specifically a target RNC;

If the source cell is in the 3GPP network of the UMTS system, the target cell is in the network of the LTE system, the source control node is specifically a source RNC, and the target control node is specifically a target base station.

A third aspect provides a source control node, where a user equipment UE is handed over from a source cell to a target cell, and the third-generation partner plan 3GPP network traffic is offloaded to a non-3GPP network in the target cell. The source control node is a control node to which the source cell belongs, and the source control node includes: a receiving unit, a modifying unit, or an updating unit;

The receiving unit is configured to receive a first indication message that is sent by the target control node, where the first indication message is used to indicate that the UE has an unnecessary handover, where the target control node is the target cell Control node;

The modifying unit is configured to: if the number of unnecessary handovers of the UE received by the receiving unit is greater than the second preset threshold, modify the handover target selection policy; or

The updating unit is configured to: if the number of unnecessary handovers of the UE received by the receiving unit is greater than the second preset threshold, the first radio access network RAN auxiliary parameter is updated, the first The RAN auxiliary parameter is the RAN assist of the source cell Parameters.

In a first possible implementation manner of the third aspect, in combination with the third aspect, the source control node further includes a sending unit;

The sending unit is configured to send a first message to the target control node before the updating unit updates the first RAN auxiliary parameter, where the first message is used to request a second RAN auxiliary parameter, the second RAN The auxiliary parameter is a RAN auxiliary parameter of the target cell;

The receiving unit is further configured to receive a second message sent by the target control node, where the second message carries the second RAN auxiliary parameter;

The update unit is specifically configured to:

Updating the first RAN auxiliary parameter according to the second RAN auxiliary parameter.

In a second possible implementation manner of the third aspect, in combination with the first possible implementation manner of the third aspect, the first message carries the first RAN auxiliary parameter.

In a third possible implementation manner of the third aspect, in combination with the third aspect, the receiving unit is further configured to: before the updating unit updates the first RAN auxiliary parameter, receive the third sent by the single wireless controller S RC a message, the third message carries an updated value of the first RAN auxiliary parameter;

The update unit is specifically configured to:

The first RAN auxiliary parameter is updated according to an updated value of the first RAN auxiliary parameter.

In a fourth possible implementation manner of the third aspect, in combination with the third aspect, the third possible implementation manner of the third aspect, the source control node further includes a sending unit;

The sending unit is configured to send a fourth message to the target control node after the updating unit updates the first RAN auxiliary parameter, where the fourth message carries the updated first RAN auxiliary parameter.

In a fifth possible implementation manner of the third aspect, in combination with the third aspect, the third possible implementation manner of the third aspect, the source control node further includes a sending unit;

The sending unit is configured to send a fifth message to the target control node after the updating unit updates the first RAN auxiliary parameter, where the fifth message carries the modified value of the first RAN auxiliary parameter and the Suggested modification of the second RAN auxiliary parameter Value.

In a sixth possible implementation manner of the third aspect, in combination with the third aspect to the fifth possible implementation manner of the third aspect, if the source cell and the target cell are both in a long-term evolution LTE standard 3GPP network, The source control node is specifically a source base station, and the target control node is specifically a target base station;

If the source cell is in the LTE system of the 3GPP network, the target cell is in the UMTS system, the source control node is specifically the source base station, and the target control node is specifically the target RNC;

If the source cell is in the 3GPP network of the UMTS system, the target cell is in the 3GPP network of the LTE system, the source control node is specifically a source RNC, and the target control node is specifically a target base station.

In a fourth aspect, a single wireless controller SRC is provided, where the user equipment UE is handed over from the source cell to the target cell, and the third-generation partner plan 3GPP network traffic is offloaded to the non-3GPP network in the target cell. The SRC includes: a receiving unit and a sending unit;

The receiving unit is configured to receive a first indication message that is sent by the target control node, where the first indication message is used to indicate that the user equipment UE has an unnecessary handover, where the target control node is a control to which the target cell belongs. Node

If the number of unnecessary handovers of the UE in the access control node is greater than the second preset threshold, the SRC sends a third message to the source control node, where the third message carries the first An update value of the RAN auxiliary parameter of the radio access network, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell, and the source control node is a control node to which the source cell belongs.

In a first possible implementation manner of the fourth aspect, in combination with the fourth aspect, if the source cell and the target cell are both in a 3GPP network of a long-term evolution LTE system, the source control node is specifically a source base station, where The target control node is specifically a target base station; if the source cell and the target cell are both in the universal mobile communication system UMTS system In the 3GPP network, the source control node is specifically a source radio network controller RNC, and the target control node is specifically a target RNC;

A fifth aspect provides a network mobility optimization method, in which a user equipment UE switches from a source cell to a target cell, and offloads 3rd Generation Partnership Project 3GPP network traffic to a non-3GPP network in the target cell. The method includes: acquiring, by the UE, an interval length, where the UE is switched to the target cell, and the UE is in the target cell by using the non-3GPP network to the 3GPP. The time difference at the moment when the network traffic is split;

And the UE sends the interval length to the target control node, where the target control node is a control node to which the target cell belongs.

In a first possible implementation manner of the fifth aspect, in combination with the fifth aspect, the moment that the UE offloads the 3GPP network traffic by using the non-3GPP network by the target cell includes:

In a second possible implementation manner of the fifth aspect, in combination with the first possible implementation manner of the fifth aspect or the fifth aspect, the moment that the UE switches to the target cell includes:

At the moment when the UE completes the random access procedure in the target cell; or, the UE successfully sends a handover complete message or is equivalent to the handover in the target cell. The moment when the message of the message is completed.

In a third possible implementation manner of the fifth aspect, in combination with the second possible implementation manners of the fifth aspect to the fifth aspect, if the target cell is in a 3GPP network of a long-term evolution LTE system, the target control node is specifically Target base station;

If the target cell is in a 3GPP network of the Universal Mobile Telecommunications System (UMTS) system, the target control node is specifically a target radio network controller RNC.

In a sixth aspect, a method for network mobility optimization is provided, in which a user equipment UE switches from a source cell to a target cell, and offloads 3rd Generation Partnership Project 3GPP network traffic to a non-3GPP network in the target cell. The method includes: the target control node receives an interval length of the UE, where the interval length is a time when the UE switches to the target cell, and the UE passes the non-3GPP in the target cell. The time difference of the time at which the network offloads the 3GPP network traffic, where the target control node is a control node to which the target cell belongs; and the target control node determines whether the interval length is less than a first preset threshold;

If the target control node determines that the interval length is less than the first preset threshold, the target control node sends a first indication message to the source control node or the single wireless controller SRC, where the first indication message is used. Instructing the UE to perform an unnecessary handover, where the source control node is a control node to which the source cell belongs.

In a first possible implementation manner of the sixth aspect, in combination with the sixth aspect, the moment that the UE offloads the 3GPP network traffic by using the non-3GPP network by the target cell includes:

Or,

In a second possible implementation manner of the sixth aspect, in combination with the sixth aspect or the first possible implementation manner of the sixth aspect, the moment that the UE switches to the target cell includes: Receiving, by the UE, a handover command message sent by the source cell or a message equivalent to a handover command message; or

In a third possible implementation manner of the sixth aspect, in combination with the second possible implementation manner of the sixth aspect to the sixth aspect, after the target control node sends the first indication message to the source control node, the method further includes:

Receiving, by the target control node, a first message sent by the source control node, where the first message is used to request a second radio access network RAN auxiliary parameter, and the second RAN auxiliary parameter is a RAN auxiliary of the target cell Parameter

The target control node sends a second cancellation, I, to the source control node, and the second message carries the second RAN auxiliary parameter.

In a fourth possible implementation manner of the sixth aspect, in combination with the third possible implementation manner of the sixth aspect to the sixth aspect, the first message carries a first RAN auxiliary parameter, where the first RAN auxiliary parameter is The RAN auxiliary parameters of the source cell.

In a fifth possible implementation manner of the sixth aspect, in combination with the fourth possible implementation manner of the sixth aspect to the sixth aspect, after the target control node sends the first indication message to the source control node or the S RC, Includes:

Receiving, by the target control node, a fourth message sent by the source control node, where the fourth message carries an updated first radio access network RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN of the source cell Auxiliary parameters.

In a sixth possible implementation manner of the sixth aspect, in combination with the fifth possible implementation manner of the sixth aspect, after the target control node receives the fourth message sent by the source control node, the method further includes:

And the target control node updates the second RAN auxiliary parameter according to the updated first RAN auxiliary parameter, where the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell.

In a seventh possible implementation manner of the sixth aspect, in combination with the fourth possible implementation manner of the sixth aspect to the sixth aspect, the first control message is sent by the target control node After the source control node or SRC, it also includes:

The target control node receives a fifth message sent by the source control node, where the fifth message carries a modified value of the first RAN auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter, where the first RAN auxiliary parameter is The RAN auxiliary parameter of the source cell, where the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

The target control node updates the second RAN auxiliary parameter according to a modified value of the first auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter.

In an eighth possible implementation manner of the sixth aspect, in combination with the seventh possible implementation manner of the sixth aspect to the sixth aspect, if the source cell and the target cell are both in a long-term evolution LTE standard 3GPP network, The source control node is specifically a source base station, and the target control node is specifically a target base station;

A seventh aspect provides a network mobility optimization method, in which a user equipment UE switches from a source cell to a target cell, and offloads 3rd Generation Partnership Project 3GPP network traffic to a non-3GPP network in the target cell. The method includes: the source control node receives the first indication message sent by the target control node, where the first indication message is used to indicate that the UE has performed an unnecessary handover, where the source control node is the source a control node to which the cell belongs, the target control node being a control node to which the target cell belongs;

And the source control node modifies the handover target selection policy, or the source control node updates the first, if the number of times that the UE receives the unnecessary handover is greater than the second preset threshold. Radio access network RAN auxiliary parameter, The first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

In a first possible implementation manner of the seventh aspect, in combination with the seventh aspect, before the source control node updates the first RAN auxiliary parameter, the method further includes:

The source control node sends a first message to the target control node, the first message is used to request a second RAN auxiliary parameter, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

The source control node receives a second message sent by the target control node, and the second message carries the second RAN auxiliary parameter;

The source control node updates the first RAN auxiliary parameter, including:

The source control node updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter.

In a second possible implementation manner of the seventh aspect, in combination with the first possible implementation manner of the seventh aspect, the first message carries the first RAN auxiliary parameter.

In a third possible implementation manner of the seventh aspect, in combination with the seventh aspect, before the source control node updates the first RAN auxiliary parameter, the method further includes: the source control node receiving the third sent by the single wireless controller SRC a message, the third message carries an updated value of the first RAN auxiliary parameter;

The source control node updates the first RAN auxiliary parameter, including:

The source control node updates the first RAN assist parameter according to an updated value of the first RAN assist parameter.

In a fourth possible implementation manner of the seventh aspect, in combination with the third possible implementation manner of the seventh aspect to the seventh aspect, after the source control node updates the first RAN auxiliary parameter, the method further includes:

The source control node sends a fourth message to the target control node, and the fourth message carries the updated first R A N auxiliary parameter.

In a fifth possible implementation manner of the seventh aspect, in combination with the third possible implementation manner of the seventh aspect to the seventh aspect, after the source control node updates the first RAN auxiliary parameter, the method further includes:

The source control node sends a fifth cancellation, I, to the target control node, the fifth The message carries a modified value of the first RAN assist parameter and a suggested modified value of the second RAN assist parameter.

In a sixth possible implementation manner of the seventh aspect, in combination with the fifth possible implementation manner of the seventh aspect to the seventh aspect, if the source cell and the target cell are both in a long-term evolution LTE standard 3GPP network, The source control node is specifically a source base station, and the target control node is specifically a target base station;

In an eighth aspect, a method for network mobility optimization is provided, in which a user equipment UE switches from a source cell to a target cell, and offloads 3rd Generation Partnership Project 3GPP network traffic to a non-3GPP network in the target cell. The method includes: receiving, by the single wireless controller SRC, a first indication message sent by the target control node, where the first indication message is used to indicate that the UE has performed an unnecessary handover, where the target control node is the a control node to which the target cell belongs;

In a first possible implementation manner of the eighth aspect, in combination with the eighth aspect, if the source cell and the target cell are both in a 3GPP network of a long-term evolution LTE system, the source control node is specifically a source base station, where The target control node is specifically a target base station; if the source cell and the target cell are both in the universal mobile communication system UMTS system In the 3GPP network, the source control node is specifically a source radio network controller RNC, and the target control node is specifically a target RNC;

A ninth aspect, a user equipment UE is provided, where the UE is handed over from a source cell to a target cell, and the third-generation partner plan 3GPP network traffic is offloaded to a non-3GPP network in the target cell. The UE includes: a processor and a transmitter;

The processor is configured to acquire an interval length, where the interval length is a time when the UE switches to the target cell, and the UE uses the non-3GPP network to send the 3GPP network traffic in the target cell. The time difference of the time when the splitting is performed; the sender is configured to send the interval length to the target control node, where the target control node is a control node to which the target cell belongs.

In a first possible implementation manner of the ninth aspect, in combination with the ninth aspect, the moment that the UE offloads the 3GPP network traffic by using the non-3GPP network by the target cell includes:

In a second possible implementation manner of the ninth aspect, in combination with the first possible implementation manner of the ninth aspect or the ninth aspect, the moment that the UE switches to the target cell includes:

At the moment when the UE completes the random access procedure in the target cell; or The moment when the UE successfully sends a handover complete message or a message equivalent to a handover complete message in the target cell.

In a third possible implementation manner of the ninth aspect, in combination with the second possible implementation manners of the ninth aspect to the ninth aspect, if the target cell is in a 3GPP network of a long-term evolution LTE system, the target control node is specifically Target base station;

According to a tenth aspect, a target control node is provided, where the user equipment UE is handed over from a source cell to a target cell, and the target cell is used to offload 3rd Generation Partnership Project 3GPP network traffic to a non-3GPP network, where the target The control node is a control node to which the target cell belongs, and the target control node includes: a receiver, a processor, and a transmitter;

The receiver is configured to receive an interval length of the UE, where the interval length is a time when the UE switches to the target cell, and the UE passes the non-3GPP network in the target cell. a time difference of a time at which the 3GPP network traffic is split;

The processor is configured to determine whether the interval length is less than a first preset threshold;

The transmitter is configured to send a first indication message to a source control node or a single wireless controller SRC, if the target control node determines that the interval length is less than the first preset threshold, the first indication message And indicating that the UE has an unnecessary handover, where the source control node is a control node to which the source cell belongs.

In a first possible implementation manner of the tenth aspect, in combination with the tenth aspect, the UE, when the target cell is offloading the 3GPP network traffic by using the non-3GPP network, includes:

Or,

And the time when the UE completes offloading the designated service to the non-3GPP network in the target cell. In a second possible implementation manner of the tenth aspect, in combination with the tenth aspect or the first possible implementation manner of the tenth aspect, the moment that the UE switches to the target cell includes:

In a third possible implementation manner of the tenth aspect, in combination with the second possible implementation manners of the tenth to tenth aspects, the receiver is further configured to send, by the sender, a first indication message to the source control After receiving the first message sent by the source control node, the first message is used to request a second radio access network RAN auxiliary parameter, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

The transmitter is further configured to send a second message to the source control node, where the second message carries the second RAN auxiliary parameter.

In a fourth possible implementation manner of the tenth aspect, in combination with the third possible implementation manner of the tenth aspect, the first message carries a first RAN auxiliary parameter, where the first RAN auxiliary parameter is the source cell RAN auxiliary parameters.

In a fifth possible implementation manner of the tenth aspect, in combination with the fourth possible implementation manner of the tenth to tenth aspects, the receiver is further configured to send, by the sender, a first indication message to the source control After receiving the fourth message sent by the source control node, the fourth message carries the updated first radio access network RAN auxiliary parameter, where the first RAN auxiliary parameter is the RAN of the source cell. Auxiliary parameters.

In a sixth possible implementation manner of the tenth aspect, in combination with the fifth possible implementation manner of the tenth aspect, the processor is further configured to: after the receiver receives the fourth message sent by the source control node And updating, according to the updated first RAN auxiliary parameter, the second RAN auxiliary parameter, where the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell.

In a seventh possible implementation manner of the tenth aspect, in combination with the fourth possible implementation manner of the tenth aspect to the tenth aspect, the receiver is further configured to send in the transmitter Receiving, by the source control node or the SRC, a fifth message sent by the source control node, where the fifth message carries a modified value of the first RAN auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter, where The first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

The processor is configured to update the second RAN auxiliary parameter according to the modified value of the first auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

In an eighth possible implementation manner of the tenth aspect, in combination with the seventh possible implementation manner of the tenth aspect to the tenth aspect, if the source cell and the target cell are both in a long-term evolution LTE standard 3GPP network, The source control node is specifically a source base station, and the target control node is specifically a target base station;

In an eleventh aspect, a source control node is provided, where the user equipment UE is handed over from the source cell to the target cell, and the third-generation partner plan 3GPP network traffic is offloaded to the non-3GPP network in the scenario, The source control node is a control node to which the source cell belongs, and the source control node includes: a receiver, a processor, and the receiver is configured to receive a first indication message sent by the target control node, where the first The indication message is used to indicate that the UE has an unnecessary handover, where the target control node is a control node to which the target cell belongs;

The processor is configured to: if the number of unnecessary handovers of the UE received by the receiver is greater than a second preset threshold, modify the handover target selection policy; or The processor is configured to: if the number of unnecessary handovers of the UE received by the receiver is greater than a second preset threshold, the first radio access network RAN auxiliary parameter is updated, the first The RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

In a first possible implementation manner of the eleventh aspect, in combination with the eleventh aspect, the source control node further includes a transmitter;

The transmitter is configured to send a first message to the target control node before the processor updates the first RAN auxiliary parameter, where the first message is used to request a second RAN auxiliary parameter, the second RAN The auxiliary parameter is a RAN auxiliary parameter of the target cell;

The receiver is further configured to receive a second message sent by the target control node, where the second message carries the second RAN auxiliary parameter;

The processor is specifically configured to:

In a second possible implementation manner of the eleventh aspect, in combination with the first possible implementation manner of the eleventh aspect, the first message carries the first RAN auxiliary parameter.

In a third possible implementation manner of the eleventh aspect, in combination with the eleventh aspect, the receiver is further configured to: before the processor updates the first RAN auxiliary parameter, receive the sending by the single wireless controller S RC a third message, where the third message carries an updated value of the first RAN auxiliary parameter;

The processor is specifically configured to:

In a fourth possible implementation manner of the eleventh aspect, in combination with the third possible implementation manner of the eleventh to eleventh aspects, the source control node further includes a transmitter, and the transmitter is configured to be used in After the processor updates the first RAN auxiliary parameter, sending a fourth message to the target control node, where the fourth message carries the updated first RAN auxiliary parameter.

In a fifth possible implementation manner of the eleventh aspect, in combination with the third possible implementation manner of the eleventh to eleventh aspects, the source control node further includes a transmitter; The transmitter, configured to send a fifth message to the target control node after the processor updates the first RAN auxiliary parameter, where the fifth message carries a modified value of the first RAN auxiliary parameter and the The suggested modified value of the second RAN auxiliary parameter.

In a sixth possible implementation manner of the eleventh aspect, in combination with the tenth aspect to the eleventh aspect, the fifth possible implementation, if the source cell and the target cell are both in a long-term evolution LTE standard 3GPP network The source control node is specifically a source base station, and the target control node is specifically a target base station;

According to a twelfth aspect, a single wireless controller SRC is provided, which is applied to a scenario where a user equipment UE switches from a source cell to a target cell, and the third generation partner plan 3GPP network traffic is offloaded to a non-3GPP network in the target cell. The SRC includes: a receiver and a transmitter;

The receiver is configured to receive a first indication message that is sent by the target control node, where the first indication message is used to indicate that the user equipment UE has an unnecessary handover, where the target control node is a control to which the target cell belongs. Node

In a first possible implementation manner of the twelfth aspect, in combination with the twelfth aspect, if the source cell and the target cell are both in a long-term evolution LTE standard 3GPP network, The source control node is specifically a source base station, and the target control node is specifically a target base station;

In a thirteenth aspect, a network mobility optimization system is provided, the system comprising the user terminal UE according to any one of the first aspect or the ninth aspect, according to any of the second aspect or the tenth aspect A target control node, and the source control node according to any of the third or eleventh aspects.

A fourteenth aspect, a network mobility optimization system, the system comprising the user terminal UE according to any one of the first aspect or the ninth aspect, according to any of the second aspect or the tenth aspect The target control node, the source control node according to any one of the third aspect or the eleventh aspect, and the single wireless controller SR according to any one of the fourth aspect or the twelfth aspect.

Based on the method, device, and system for network mobility optimization provided by the embodiment of the present invention, the UE may obtain the interval length and send the interval length to the target control node, where the interval length is the UE handover to the target cell. The time difference between the moment and the time when the UE splits the 3GPP network traffic through the non-3GPP network in the target cell. In this way, the target control node can determine whether the UE has an unnecessary handover according to the length of the interval, and notify the source control node or the SRC in time when the UE has an unnecessary handover, so that the source control node can modify the handover target selection policy or The first RAN auxiliary parameter is updated, or the SRC may notify the source control node to update the first RAN auxiliary parameter in time, thereby preventing the UE from continuously performing unnecessary switching in the source cell. On the one hand, the signaling overhead of the system is saved, and on the other hand, the problem of cell handover failure in the cell handover process is also prevented, and the user body is improved. n to achieve the purpose of network mobility optimization.

A fifteenth aspect, a first control node is provided, where the first control node includes: a sending unit, a receiving unit, and an updating unit;

The sending unit is configured to send a first message to the second control node, where the first message is used to request a second radio access network RAN auxiliary parameter, where the first control node is a control node to which the first cell belongs, The second control node is a control node to which the second cell belongs, the second RAN auxiliary parameter is a RAN auxiliary parameter of the second cell, and the receiving unit is configured to receive the second a second message, where the second message carries the second RAN auxiliary parameter;

And the updating unit is configured to update the first RAN auxiliary parameter according to the second RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

In a first possible implementation manner of the fifteenth aspect, in combination with the fifteenth aspect, the first message carries the first R A N auxiliary parameter.

In a second possible implementation manner of the fifteenth aspect, in combination with the fifteenth aspect or the first possible implementation manner of the fifteenth aspect, the sending unit is further configured to perform, according to the second After the RAN auxiliary parameter updates the first RAN auxiliary parameter, the fourth message is sent to the second control node, and the fourth message carries the updated first RAN auxiliary parameter.

In a fifth possible implementation manner of the fifteenth aspect, in combination with the fifteenth aspect or the first possible implementation manner of the fifteenth aspect, the sending unit is further configured to perform, according to the second After the RAN auxiliary parameter updates the first RAN auxiliary parameter, sending a fifth message to the second control node, where the fifth message carries the modified value of the first RAN auxiliary parameter and the suggested modification of the second RAN auxiliary parameter value.

In a fourth possible implementation manner of the fifteenth aspect, in combination with the fifth possible implementation manner of the fifteenth aspect to the fifteenth aspect, if the first cell and the second cell are both in the long term evolution LTE system The third control partner is a third base station, and the second control node is specifically a second base station;

If the first cell and the second cell are both in a 3GPP network of a universal mobile communication system UMT S, the first control node is specifically a first wireless network control. RNC, the second control node is specifically a second RNC;

If the first cell is in the 3GPP network of the LTE system, and the second cell is in the network of the UMTS system, the first control node is specifically a first base station, and the second control node is specific. For the second RNC;

If the first cell is in the 3GPP network of the UMT S system, and the second cell is in the network of the LTE system, the first control node is specifically a first RNC, and the second control node is It is the second base station.

In a sixteenth aspect, a second control node is provided, where the second control node includes: a receiving unit and a sending unit;

The receiving unit is configured to receive a first message sent by the first control node, where the first message is used to request a second radio access network RAN auxiliary parameter, where the first control node is a control node to which the first cell belongs The second control node is a control node to which the second cell belongs, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the second cell;

The sending unit is configured to send a second message to the first control node, where the second message carries the second RAN auxiliary parameter.

In a first possible implementation manner of the sixteenth aspect, in combination with the sixteenth aspect, the first message carries a first RAN auxiliary parameter, and the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

In a second possible implementation manner of the sixteenth aspect, in combination with the sixteenth aspect or the first possible implementation manner of the sixteenth aspect, the receiving unit is further configured to send, by the sending unit, a second message to Receiving, by the first control node, a fourth message sent by the first control node, where the fourth message carries the updated first RAN auxiliary parameter, where the first RAN auxiliary parameter is the first cell RAN auxiliary parameters.

In a third possible implementation manner of the sixteenth aspect, in combination with the second possible implementation manner of the sixteenth aspect, the second control node further includes an update unit;

And the updating unit is configured to: after the receiving unit receives the fourth message sent by the first control node, update the second RAN auxiliary parameter according to the updated first RAN auxiliary parameter.

In a fourth possible implementation of the sixteenth aspect, in combination with the sixteenth aspect or a first possible implementation manner of the sixteenth aspect, the second control node further includes an update unit;

The receiving unit is configured to: after the sending, by the sending unit, the second message to the first control node, receive a fifth message sent by the first control node, where the fifth message carries the first RAN auxiliary parameter a modified value and a suggested modified value of the second RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell, and the updating unit is configured to modify a value according to the first auxiliary parameter The suggested modified value of the second RAN auxiliary parameter updates the second RAN auxiliary parameter.

In a fifth possible implementation manner of the sixteenth aspect, in combination with the fourth possible implementation manner of the sixteenth aspect to the sixteenth aspect, if the first cell and the second cell are both in the long term evolution LTE system The third control partner is a third base station, and the second control node is specifically a second base station;

If the first cell and the second cell are both in the 3GPP network of the universal mobile communication system UMT S, the first control node is specifically a first radio network controller RNC, and the second control node is specific. For the second RNC;

In a seventeenth aspect, a method for network mobility optimization is provided, the method comprising: a first control node sending a first message to a second control node, where the first message is used to request a second radio access network RAN to assist a parameter, the first control node is a control node to which the first cell belongs, the second control node is a control node to which the second cell belongs, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the second cell;

Receiving, by the first control node, a second message sent by the second control node, where the second message carries the second RAN auxiliary parameter;

The first control node updates the first RAN according to the second RAN auxiliary parameter The auxiliary parameter, the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell. In a first possible implementation manner of the seventeenth aspect, in combination with the seventeenth aspect, the first message carries the first RAN auxiliary parameter.

In a second possible implementation manner of the seventeenth aspect, in combination with the seventeenth aspect or the first possible implementation manner of the seventeenth aspect, the first control node updates the first one according to the second RAN auxiliary parameter After the RAN auxiliary parameter, it also includes:

The first control node sends a fourth message to the second control node, and the fourth message carries the updated first RAN auxiliary parameter.

In a third possible implementation manner of the seventeenth aspect, in combination with the seventeenth aspect or the first possible implementation manner of the seventeenth aspect, the first control node updates the first one according to the second RAN auxiliary parameter After the RAN auxiliary parameter, it also includes:

The first control node sends a fifth message to the second control node, and the fifth message carries a modified value of the first R A N auxiliary parameter and a suggested modified value of the second R A N auxiliary parameter.

In a fourth possible implementation manner of the seventeenth aspect, in combination with the third possible implementation manner of the seventeenth aspect to the seventeenth aspect, if the first cell and the second cell are both in the long term evolution LTE system The third control partner is a third base station, and the second control node is specifically a second base station;

If the first cell and the second cell are both in a 3GPP network of a universal mobile communication system (UMTS) system, the first control node is specifically a first radio network controller RNC, and the second control node is specifically Two RNC;

If the first cell is in the 3GPP network of the LTE system, and the second cell is in the network of the UMTS system, the first control node is specifically a first base station, and the second control node is specifically Second RNC;

If the first cell is in the 3GPP network of the UMTS system, and the second cell is in the network of the LTE system, the first control node is specifically a first RNC, and the second control node is a Two base stations.

According to an eighteenth aspect, a method for network mobility optimization is provided, the method includes: receiving, by a second control node, a first message sent by a first control node, where the first The information is used to request the second radio access network RAN auxiliary parameter, where the first control node is a control node to which the first cell belongs, the second control node is a control node to which the second cell belongs, and the second RAN assists The parameter is a RAN auxiliary parameter of the second cell; the second control node sends a second message to the first control node, and the second message carries the second RAN auxiliary parameter.

In a first possible implementation manner of the eighteenth aspect, in combination with the eighteenth aspect, the first message carries a first RAN auxiliary parameter, and the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

In a second possible implementation manner of the eighteenth aspect, in combination with the eighteenth aspect or the first possible implementation manner of the eighteenth aspect, the second control node sends a second message to the first control node After that, it also includes:

Receiving, by the second control node, a fourth message sent by the first control node, where the fourth message carries an updated first RAN auxiliary parameter, where the first RAN auxiliary parameter is RAN assisted by the first cell parameter.

In a third possible implementation manner of the eighteenth aspect, in combination with the second possible implementation manner of the eighteenth aspect, after the second control node receives the fourth message sent by the first control node, :

The second control node updates the second RAN auxiliary parameter according to the updated first RAN auxiliary parameter.

In a fourth possible implementation manner of the eighteenth aspect, in combination with the eighteenth aspect or the first possible implementation manner of the eighteenth aspect, the second control node sends a second message to the first control node After that, it also includes:

Receiving, by the second control node, a fifth message sent by the first control node, where the fifth message carries a modified value of the first RAN auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter, where the first RAN assists The parameter is a RAN auxiliary parameter of the first cell;

The second control node updates the second RAN auxiliary parameter according to the modified value of the first auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

In a fifth possible implementation manner of the eighteenth aspect, the fourth possible implementation manner of the eighteenth aspect to the eighteenth aspect, if the first cell and the second cell The first control node is specifically the first base station, and the second control node is specifically the second base station, in the third generation partner project 3GPP network of the long-term evolution LTE system;

In a nineteenth aspect, a first control node is provided, where the first control node includes: a transmitter, a receiver, and a processor;

The transmitter is configured to send a first message to the second control node, where the first message is used to request a second radio access network RAN auxiliary parameter, where the first control node is a control node to which the first cell belongs, The second control node is a control node to which the second cell belongs, the second RAN auxiliary parameter is a RAN auxiliary parameter of the second cell, and the receiver is configured to receive the second a second message, where the second message carries the second RAN auxiliary parameter;

The processor is configured to update, according to the second RAN auxiliary parameter, a first RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

In a first possible implementation manner of the nineteenth aspect, in combination with the nineteenth aspect, the first message carries the first R A N auxiliary parameter.

In a second possible implementation manner of the nineteenth aspect, in combination with the nineteenth aspect or the first possible implementation manner of the nineteenth aspect, the transmitter is further configured to perform, according to the second After the RAN auxiliary parameter updates the first RAN auxiliary parameter, the fourth message is sent to the second control node, and the fourth message carries the updated first RAN auxiliary parameter.

In a third possible implementation of the nineteenth aspect, in combination with the nineteenth aspect or The first possible implementation manner of the nineteenth aspect, the transmitter is further configured to: after the processor updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter, send a fifth message to the second control a node, the fifth message carrying a modified value of the first RAN auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter.

In a fourth possible implementation manner of the nineteenth aspect, in combination with the third possible implementation manner of the nineteenth aspect to the nineteenth aspect, if the first cell and the second cell are both in the long term evolution LTE system The third control partner is a third base station, and the second control node is specifically a second base station;

In a twentieth aspect, a second control node is provided, where the second control node includes: a receiver and a transmitter;

The receiver is configured to receive a first message sent by the first control node, where the first message is used to request a second radio access network RAN auxiliary parameter, where the first control node is a control node to which the first cell belongs The second control node is a control node to which the second cell belongs, the second RAN auxiliary parameter is a RAN auxiliary parameter of the second cell, and the transmitter is configured to send a second message to the first And controlling, by the second node, the second RAN auxiliary parameter.

In a first possible implementation manner of the twentieth aspect, in combination with the twentieth aspect, the first message carries a first RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

In the second possible implementation of the twentieth aspect, combining the twentieth aspect or the The first possible implementation manner of the twentieth aspect, the receiver is further configured to: after the transmitter sends the second message to the first control node, receive the fourth message sent by the first control node, The fourth message carries the updated first RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

In a third possible implementation manner of the twentieth aspect, in combination with the second possible implementation manner of the twentieth aspect, the second control node further includes a processor;

And the processor, configured to: after the receiver receives the fourth message sent by the first control node, update the second RAN auxiliary parameter according to the updated first RAN auxiliary parameter.

In a fourth possible implementation manner of the twentieth aspect, in combination with the first possible implementation manner of the twentieth aspect, the second control node further includes a processor;

The receiver is configured to: after the sending, by the sender, the second message to the first control node, receive a fifth message sent by the first control node, where the fifth message carries the first RAN auxiliary parameter a modified value and a suggested modified value of the second RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell;

In a fifth possible implementation manner of the twentieth aspect, in combination with the fourth possible implementation manner of the twentieth aspect to the twentieth aspect, if the first cell and the second cell are both in the long term evolution LTE system The third control partner is a third base station, and the second control node is specifically a second base station;

If the first cell is in the 3GPP network of the UMTS system, and the second cell is in the network of the LTE system, the first control node is specifically a first RNC, The second control node is a second base station.

A twenty-first aspect, a system for network mobility optimization, the system comprising the first control node according to any one of the fifteenth aspect or the nineteenth aspect, and the sixteenth aspect or the second The second control node of any of the ten aspects.

Based on the method, device, and system for network mobility optimization provided by the embodiment of the present invention, the first control node sends a first message to the second control node, where the first message is used to request the second R AN auxiliary parameter; and then the first control node Receiving a second message sent by the second control node, where the second message carries the second RAN auxiliary parameter; and the first control node further updates the first RAN auxiliary parameter according to the second R AN auxiliary parameter. By updating the first R AN auxiliary parameter according to the second RAN auxiliary parameter by the first control node, it is possible to prevent the U E from unnecessary switching from the first cell to the second cell. On the one hand, the system's signaling overhead is saved. On the other hand, the problem of cell handover failure during cell handover is prevented, and the user experience is improved, thereby achieving the goal of network mobility optimization.

DRAWINGS

FIG. 1 is a schematic structural diagram of accessing a P D N through a 3 G P P access network and a WLAN according to an embodiment of the present invention;

2 is a schematic flowchart of a method for carrying LST network traffic through a WLA N network according to an embodiment of the present invention;

3 is a schematic flowchart 1 of a method for network mobility optimization according to an embodiment of the present invention;

4 is a schematic flowchart 2 of a method for network mobility optimization according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of a method for network mobility optimization according to an embodiment of the present invention; FIG.

6 is a schematic flowchart of a method for network mobility optimization according to an embodiment of the present invention;

7 is a schematic flowchart of a method for network mobility optimization according to an embodiment of the present invention;

FIG. 8 is a schematic flowchart 6 of a method for network mobility optimization according to an embodiment of the present disclosure; FIG. 9 is an interaction diagram of a method for network mobility optimization according to an embodiment of the present invention, where

10 is an interactive method for network mobility optimization provided by an embodiment of the present invention

-闳,

11 is a mobile mobility optimization method provided by the embodiment of the invention, which is an interactive gesture ι3⁄4,

FIG. 12 is a schematic diagram of an interactive method for network mobility optimization according to an embodiment of the present invention.

FIG. 13 is a schematic diagram of a method for network mobility optimization according to an embodiment of the present invention; FIG.

FIG. 14 is a schematic diagram of a method for optimizing network mobility according to an embodiment of the present invention; “^”;

FIG. 15 is a schematic diagram of a method for optimizing network mobility optimization according to an embodiment of the present invention; FIG.

16 is an interaction diagram of a method for optimizing network mobility according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of a method for optimizing network mobility according to an embodiment of the present invention; FIG.

FIG. 18 is a flowchart of a method for network mobility optimization according to an embodiment of the present invention; FIG.

FIG. 19 is a flowchart of a method for network mobility optimization according to an embodiment of the present invention; FIG.

FIG. 20 is a flowchart of a method for optimizing network mobility according to an embodiment of the present invention. FIG.

FIG. 21 is a flowchart of a method for network mobility optimization according to an embodiment of the present invention; FIG.

FIG. 22 is a flowchart of a method for network mobility optimization according to an embodiment of the present invention.

FIG. 23 is a schematic flowchart diagram of a method for network mobility optimization according to an embodiment of the present invention. FIG. 24 is a schematic structural diagram of a UE according to an embodiment of the present disclosure;

FIG. 25 is a schematic structural diagram of a target control node according to an embodiment of the present invention; FIG. 26 is a schematic structural diagram of a source control node according to an embodiment of the present invention; FIG. 28 is a schematic structural diagram of a source control node according to an embodiment of the present invention; FIG. 28 is a schematic structural diagram of a source control node according to an embodiment of the present invention; FIG. 30 is a schematic structural diagram of an SRC according to an embodiment of the present invention; ;

FIG. 31 is a schematic diagram 1 of a system structure for network mobility optimization according to an embodiment of the present invention; FIG.

32 is a schematic diagram of a system structure for network mobility optimization according to an embodiment of the present invention;

FIG. 33 is a schematic structural diagram of a first control node according to an embodiment of the present invention; FIG. 34 is a schematic diagram of a second control node according to an embodiment of the present invention. FIG. FIG. 36 is a schematic structural diagram 3 of a network mobility optimization system according to an embodiment of the present invention.

detailed description

3GPP defines the architecture of the UE accessing the Packet Data Network (PDN) through the 3GPP access network and the wireless local area network (WLAN) as shown in Figure 1.

For the Universal Mobile Telecommunications System (UMTS), the UE passes through the Node (NodeB), via the Radio Network Control (RNC), the GPRS Support Node (SGSN; GM) Packet Radio Service, GPRS) Gateway GPRS Support Node (Gateway GPRS Support Node, GGSN) Access to the PDN network.

For a Long Term Evolution (LTE) network, the UE passes an evolved base station ( evolved NodeB, eNB), via a mobility management entity (Mol ibi 1 i ty Mangemant Eni ty, MME), and a monthly service gateway (Serving GateWay, SGW) The Packet Data Network Gateway (PDN GateWay, PGW) accesses the PDN network.

For a trusted AN network, the UE accesses the PDN network through an access point (AP), a WLAN Trusted Access Gateway (WTAG), and a PGW.

For non-trusted WLAN networks, the UE passes through the WLAN and accesses the gateway through the WLAN.

(WLAN Access Gateway, WAG), Enhanced Packet Data Gateway (ePDG), PGW access to PDN network.

In the network topology shown in FIG. 1, a scheme in which the RAN side carries a part of the 3GPP network traffic by the WLAN network is proposed. The following takes the interaction between the LTE system and the WLAN system as an example, and the existing WLAN network is used to carry part of the LTE. A specific example of network traffic is shown in Figure 2:

S201 UE establishes a PDN connection with the PGW.

S202. The MME sends a Non-Access Stratum (NAS) message to the UE, where the NAS message carries an access point name (Access Point Name, ΑΡΝ) information that can be offloaded.

The ΑΡΝ information contains APN information that can be offloaded to the WLAN.

It should be noted that, the MME sends a NAS message to the UE, which may be in the process of establishing a PDN connection in S201, or after the PDN connection is established, which is not specifically limited in this embodiment of the present invention.

S203. The eNB sends a broadcast message or a dedicated Radio Resource Control (RRC) message to the UE, and the RAN auxiliary parameter of the cell to which the UE belongs is carried in the broadcast message or the dedicated RRC message.

Among them, the auxiliary parameters include:

LTE network parameters, Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (Reference) Signal Receiving Power , RSRQ );

WLAN network parameters, Channel Utilization WLAN for WLAN networks, Backhau 1 Rate D1 WLAN for WLAN networks, Backhaul Rate U1 WLAN for WLAN networks, Receive channel power for WLAN networks Received Channel Power Indicator (RCP I), WLAN network: Received Channel Power Indicator (RSN I);

A list of WLAN network identifiers used to identify possible offloading target WLAN networks.

S204. The UE acquires an auxiliary parameter that is actually measured.

S205. The UE performs WLAN network selection by using the RAN rule according to the received RAN auxiliary parameter and the actually measured auxiliary parameter, and determines an APN that can be offloaded to the WLAN network according to the received APN information that can be offloaded.

Specifically, the RAN rule can be as follows:

The LTE service cell meets:

RSRP measurement value < RSRP preset low threshold; or

RSRQ measurement value < RSRQ preset low threshold;

And, the target WLAN network meets:

Channel utilization of the WLAN network <channel utilization preset low threshold; and, downlink backhaul rate of the WLAN network> downlink backhaul rate preset high threshold; and, WLAN network uplink backhaul rate> uplink backhaul rate preset High threshold; and, RCPI > RCPI preset high threshold; and,

RSNI > RSNI preset high threshold.

S206. The UE accesses the selected WLAN network, establishes a connection with the PGW, and transmits the bearer or IP stream corresponding to the splittable APN through the WLAN network.

Of course, when the UE performs network offloading from the WLAN network to the LTE network, the specific RAN rule can be as follows:

The target WLAN network meets:

Channel utilization of the WLAN network > channel utilization preset high threshold; or, downlink downlink rate of the WLAN network <downward return rate preset low threshold; or By,

Uplink backhaul rate of the WLAN network <uplink backhaul rate preset low threshold; or

RCPI < RCPI preset low threshold; or,

RSNI < RSNI preset low threshold;

And, the LTE serving cell satisfies:

RSRP measurement value > RSRP preset high threshold;

RSRQ measurement value > RSRQ preset high threshold;

It should be noted that the above is merely an exemplary method for carrying a part of 3GPP network traffic through a non-3GPP network. Of course, the specific implementation may be different for different systems, and the present invention is here. No longer.

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 obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The UE described in the embodiment of the present invention may be a wireless terminal, which may be a device that only provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem. . The wireless terminal can communicate with one or more core networks via the RAN, which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, can be portable, pocket-sized, Handheld, computer built-in or in-vehicle mobile devices that exchange language and/or data with the RAN. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), etc. . A wireless terminal may also be called a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber Station), a mobile station (Mo bile Station), a mobile station (Mobi le), a remote station (Remote Station) access point (Access Point, AP), Remote Terminal, Access Terminal, User Terminal User Agent or User Equipment.

In order to facilitate the clear description of the technical solution of the embodiment of the present invention, in the embodiment of the present invention, the words "first", "second", "third", "fourth" and the like are used to have substantially the same function and function. The same or similar items are distinguished, and those skilled in the art can understand that the words "first", "second", "third", "fourth" and the like do not limit the quantity and execution order.

Embodiment 1

The embodiment of the present invention provides a UE 2400, where the UE2400 is used to switch from the source cell to the target cell, and the target cell divides the 3GPP network traffic to the non-3GPP network. As shown in FIG. 24, the UE2400 includes: an acquiring unit 2401. And sending unit 2402.

The obtaining unit 2401 is configured to obtain an interval length, where the time interval between the UE2400 handover to the target cell and the time when the UE2400 offloads the 3GPP network traffic by the target cell through the non-3GPP network.

The sending unit 2402 is configured to send an interval length to the target control node, where the target control node is a control node to which the target cell belongs.

Preferably, the time when the UE2400 offloads the 3GPP network traffic by the non-3GPP network in the target cell may include:

The UE2400 determines, at the time when the target cell divides the 3GPP network traffic through the non-3GPP network; or

The UE2400 completes the offloading of the designated service to the non-3GPP network in the target cell.

Preferably, the moment when the UE2400 switches to the target cell may specifically include:

The time when the UE2400 receives the handover command message sent by the source cell or the message equivalent to the handover command; or

The moment when the UE2400 completes the random access procedure in the target cell; or,

The UE2400 successfully transmits a handover complete message or a message equivalent to the handover complete message in the target cell. Specifically, if the target cell is in the LTE standard 3GPP network, the target control node may specifically be the target base station;

If the target cell is in the UMTS standard 3GPP network, the target control node may specifically be the target RN (:.

It should be noted that, in the unit module of the UE2400 provided by the embodiment of the present invention, the obtaining unit 2401 may be specifically implemented by a processor, and the sending unit 2402 may be specifically implemented by using a transmitter. The processor and the transmitter can communicate with each other, which is not specifically limited in this embodiment of the present invention.

Specifically, the method for performing network mobility optimization by using the UE2400 may refer to the description of the ninth embodiment or the tenth embodiment, which is not repeatedly described in the embodiment of the present invention.

Since the UE 2400 of the present embodiment can be used to perform the method of the following embodiment IX or the tenth embodiment, the technical effects that can be obtained can also be referred to the following description in the ninth embodiment or the tenth embodiment. No specific explanation.

Embodiment 2

The embodiment of the present invention provides a target control node 2500, where the target control node 2500 is controlled by the target cell, in a scenario where the UE switches from the source cell to the target cell, and the target cell divides the 3GPP network traffic to the non-3GPP network. As shown in FIG. 25, the target control node 2500 includes: a receiving unit 2501, a determining unit 2502, and a sending unit 2503.

The receiving unit 2501 is configured to receive an interval length of the UE, where the interval time is a time difference between a time when the UE switches to the target cell and a time when the UE divides the 3GPP network traffic by the target cell by using the non-3GPP network;

a determining unit 2502, configured to determine whether an interval length is less than a first preset threshold;

The sending unit 2503 is configured to: if the target control node 2500 determines that the interval length is less than the first preset threshold, send the first indication message to the source control node or a single radio controller (SRC), where the first indication message is used. Indicates that the UE has an unnecessary handover, where the source control node is the control node to which the source cell belongs.

Preferably, the UE enters the 3GPP network traffic through the non-3GPP network in the target cell. The timing of the line splitting may specifically include:

The UE determines, at the target cell, a time when the 3GPP network traffic is offloaded through the non-3GPP network; or

The UE completes the time when the designated service is offloaded to the non-3GPP network in the target cell. Preferably, the moment when the UE switches to the target cell may specifically include:

Receiving, by the UE, a handover command message sent by the source cell or a message equivalent to a message of the handover command; or

The moment when the UE completes the random access procedure in the target cell; or,

The moment when the UE successfully transmits a handover complete message or a message equivalent to the handover complete message in the target cell.

Further, the receiving unit 25 01 is further configured to: after the sending unit 25 03 sends the first indication message to the source control node, receive the first message sent by the source control node, where the first message is used to request the second RAN auxiliary parameter, The two RAN auxiliary parameters are RAN auxiliary parameters of the target cell.

The sending unit 2 5 0 3 is further configured to send the second message to the source control node, and the second message carries the second RAN auxiliary parameter.

Optionally, the first message may carry the first RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell. This embodiment of the present invention does not specifically limit this.

Further, the receiving unit 25 01 is further configured to: after the sending unit 25 03 sends the first indication message to the source control node or the SRC, receive the fourth message sent by the source control node, where the fourth message carries the updated first wireless connection. The incoming RAN auxiliary parameter, the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

Further, as shown in FIG. 26, the target control node 2 500 can also include an update unit 254.

The updating unit 2 5 04 is configured to: after the receiving unit 205 receives the fourth message sent by the source control node, update the second RAN auxiliary parameter according to the updated first RAN auxiliary parameter, where the second RAN auxiliary parameter is the target cell RAN auxiliary parameters.

Optionally, the receiving unit 2 5 01 is further configured to: after the sending unit 25 03 sends the first indication message to the source control node or the S RC, receive the fifth message sent by the source control node, where the fifth message carries the first RAN assist Modified value of the parameter and the second RAN auxiliary parameter a number of suggested modified values, the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

The updating unit 2504 is configured to update the second RAN auxiliary parameter according to the modified value of the first auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

Specifically, if the source cell and the target cell are both in the LTE standard 3GPP network, the source control node may be the source base station, and the target control node 2500 may be the target base station;

If the source cell and the target cell are both in the UMTS standard 3GPP network, the source control node may be a source radio network controller RNC, and the target control node 2500 may specifically be a target RNC;

If the source cell is in the LTE standard 3GPP network, the target cell is in the UMTS system, the source control node may be the source base station, and the target control node 2500 may be the target RNC;

If the source cell is in the UMTS 3GPP network and the target cell is in the LTE network, the source control node may be the source RNC, and the target control node 2500 may be the target base station.

It should be noted that, in the unit module of the target control node 2500 provided by the embodiment of the present invention, the receiving unit 2501 may be implemented by a receiver, and the determining unit 2502 and the updating unit 2504 may be specifically implemented by a processor, where the sending unit 2503 This can be achieved by a transmitter. The receiver, the processor, and the transmitter can communicate with each other, which is not specifically limited in this embodiment of the present invention.

For example, the method for performing network mobility optimization by the target control node 2500 may refer to the description of the ninth embodiment or the tenth embodiment.

Since the target control node 2500 of the present embodiment can be used to perform the method of the following embodiment IX or the tenth embodiment, the technical effects that can be obtained can also be referred to the following description in the ninth embodiment or the tenth embodiment. I will elaborate on this beforehand.

Embodiment 3

The embodiment of the present invention provides a source control node 2700, where the source control node 2700 is controlled by the source cell, in a scenario where the UE is handed over from the source cell to the target cell, and the target cell divides the 3GPP network traffic to the non-3GPP network. Node, specific As shown in FIG. 27, the source control node 27 00 includes: a receiving unit 2 7 01, a modifying unit 2 7 02; or, as specifically shown in FIG. 28, the source control node 27 00 includes: a receiving unit 2 7 01, an update unit 27 03.

The receiving unit 2 7 01 is configured to receive a first indication message sent by the target control node, where the first indication message is used to indicate that the UE has performed an unnecessary handover, where the target control node is a control node to which the target cell belongs.

The modifying unit 2 7 02 is configured to modify the switching target selection policy if the number of unnecessary handovers of the UE received by the receiving unit 27 01 is greater than the second preset threshold within a preset time. Or,

The updating unit 2 7 03 is configured to: if the number of unnecessary handovers of the UE received by the receiving unit 271 is greater than the second preset threshold, the first RAN auxiliary parameter is updated, and the first RAN auxiliary parameter is the source. RAN auxiliary parameters of the cell.

Further, in a possible implementation manner, as shown in FIG. 29, the source control node 2 7 00 further includes a sending unit 2 7 04.

The sending unit 2 7 04 is configured to send a first message to the target control node before updating the first RAN auxiliary parameter, the first message is used to request the second RAN auxiliary parameter, and the second RAN auxiliary parameter is the target RAN auxiliary parameters of the cell.

The receiving unit 2 7 01 is further configured to receive a second message sent by the target control node, where the second message carries the second RAN auxiliary parameter.

Update unit 2 7 03 is specifically used for:

The first RAN auxiliary parameter is updated according to the second RAN auxiliary parameter.

Optionally, the first message may carry the first RAN auxiliary parameter, which is not specifically limited in this embodiment of the present invention.

In another possible implementation manner, the receiving unit 207 is further configured to: before the updating unit 27 03 updates the first RAN auxiliary parameter, receive a third message sent by the S RC, where the third message carries the first RAN auxiliary parameter. Update the value.

Update unit 2 7 03 is specifically used for:

The first RAN auxiliary parameter is updated according to the updated value of the first RAN auxiliary parameter.

Further, in a possible implementation manner, as shown in FIG. 29, the sending unit 2 7 04 is configured to send the first RAN auxiliary parameter after the updating unit 277 The fourth message is sent to the target control node, and the fourth message carries the updated first RAN auxiliary parameter.

In another possible implementation, the sending unit 2704 is configured to: after the updating unit 2703 updates the first RAN auxiliary parameter, send a fifth message to the target control node, where the fifth message carries the modified value of the first RAN auxiliary parameter and the The suggested modified value of the two RAN auxiliary parameters.

Specifically, if the source cell and the target cell are both in the LTE standard 3GPP network, the source control node 2700 is specifically a source base station, and the target control node may be a target base station;

If the source cell and the target cell are both in the UMTS 3GPP network, the source control node 2700 may be an RNC, and the target control node may be a target RNC.

If the source cell is in the LTE standard 3GPP network, and the target cell is in the UMTS system, the source control node 2700 may be the source base station, and the target control node may be the target RNC;

If the source cell is in the 3GPP network of the UMTS system and the target cell is in the 3GPP network of the LTE system, the source control node 2700 may be a source RNC, and the target control node may be a target base station. It should be noted that, in the unit module of the source control node 2700 provided by the embodiment of the present invention, the receiving unit 2701 may be implemented by a receiver, and the modifying unit 2702 may be implemented by a processor, where the sending unit 2704 is implemented. This can be achieved by a transmitter. The receiver, the processor, and the transmitter can communicate with each other, which is not specifically limited in this embodiment of the present invention.

For details, the method for performing network mobility optimization by the source control node 2700 may be referred to the description of the ninth embodiment or the tenth embodiment.

Since the source control node 2700 of the present embodiment can be used to perform the method of the following embodiment IX or the tenth embodiment, the technical effects that can be obtained can also be referred to the following description in the ninth embodiment or the tenth embodiment. I will elaborate on this beforehand.

Embodiment 4

The embodiment of the present invention provides an SRC3000, where the UE is switched from a source cell to a target cell, and the 3GPP network traffic is offloaded to the non-3GPP network in the target cell. In the scenario, as shown in FIG. 30, the SRC3000 includes: a receiving unit 3001 and a sending unit 3002.

The receiving unit 3001 is configured to receive a first indication message that is sent by the target control node, where the first indication message is used to indicate that the user equipment UE has an unnecessary handover, where the target control node is a control node to which the target cell belongs.

If the number of unnecessary handovers of the UE in the access control node is greater than the second preset threshold, the SRC3000 sends a third message to the source control node, and the third message carries the updated value of the first RAN auxiliary parameter. The first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell, and the source control node is a control node to which the source cell belongs.

Specifically, if the source cell and the target cell are both in the LTE standard 3GPP network, the source control node may be the source base station, and the target control node may be the target base station;

If the source cell and the target cell are both in the UMTS 3GPP network, the source control node may be an RNC, and the target control node may be a target RNC;

If the source cell is in the LTE standard 3GPP network, and the target cell is in the UMTS standard network, the source control node may be the source base station, and the target control node may be the target RNC;

If the source cell is in the UMTS 3GPP network and the target cell is in the LTE network, the source control node may be the source RNC, and the target control node may be the target base station.

It should be noted that, in the unit module of the SRC3000 provided by the embodiment of the present invention, the receiving unit 3001 may be specifically implemented by a receiver, and the sending unit 3002 may be specifically implemented by a transmitter. The receiver and the transmitter can communicate with each other, which is not specifically limited in this embodiment of the present invention.

For details, the method for performing network mobility optimization by using the SRC300G may be referred to the description of the embodiment IX or the tenth embodiment.

Since the SRC3000 of the present embodiment can be used to perform the method of the following embodiment IX or the tenth embodiment, the technical effects that can be obtained can also be referred to the following description of the ninth embodiment or the tenth embodiment. Do not elaborate.

Embodiment 5 The embodiment of the present invention provides a network mobility optimization system 3100. Specifically, as shown in FIG. 31, the system 3100 includes:

The UE 2400 according to the first embodiment, the target control node 2500 as described in the second embodiment, and the source control node 2700 as described in the third embodiment.

For a specific description of the UE2400, refer to the first embodiment. For a detailed description of the target control node 2500, refer to the second embodiment. For a detailed description of the source control node 2700, reference may be made to the third embodiment. Narration.

Specifically, the method for performing network mobility optimization by the network mobility optimization system 3100 can refer to the description of the tenth embodiment, and details are not described herein again.

Since the system 3100 of the present embodiment can be used to perform the method of the following tenth embodiment, the technical effects that can be obtained can also be referred to the description in the following tenth embodiment, which will not be specifically described herein.

Optionally, the embodiment of the present invention further provides a network mobility optimization system 3200. As shown in FIG. 32, the system 3200 includes:

The UE 2400 according to the first embodiment, the target control node 2500 as described in the second embodiment, the source control node 2700 as described in the third embodiment, and the SRC 3000 as described in the fourth embodiment.

For a detailed description of the UE2400, refer to the first embodiment. For a detailed description of the target control node 2500, refer to the second embodiment. For a detailed description of the source control node 2700, refer to the third embodiment. For a detailed description of the SRC3000, refer to the implementation. For example, the embodiment of the present invention is not described herein again.

Specifically, the method for performing network mobility optimization by the network mobility optimization system 3200 can refer to the description of the tenth embodiment, and details are not described herein again.

Since the system 3200 of the present embodiment can be used to perform the method of the following tenth embodiment, the technical effects that can be obtained can also be referred to the description in the following tenth embodiment, which will not be specifically described herein.

Embodiment 6

The embodiment of the present invention provides a first control node 3300. Specifically, as shown in FIG. 33, the first control node 3300 includes: a sending unit 3301, a receiving unit 3302, and an updating unit 3303. The sending unit 3 301 is configured to send a first message to the second control node, where the first message is used to request the second radio access network RAN auxiliary parameter, the first control node 3300 is a control node to which the first cell belongs, and the second The control node is a control node to which the second cell belongs, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the second cell.

The receiving unit 3 302 is configured to receive a second message sent by the second control node, where the second message carries the second RAN auxiliary parameter.

The updating unit 3 30 3 is configured to update the first RAN auxiliary parameter according to the second RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

Further, the sending unit 3 301 is further configured to: after the updating unit 333 updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter, send a fourth message to the second control node, where the fourth message carries the updated first RAN auxiliary parameters.

Optionally, the sending unit 3 301 is further configured to: after the updating unit 3 303 updates the first RAN auxiliary parameter by using the second RAN auxiliary parameter, sending a fifth message to the second control node, where the fifth message carries the first RAN auxiliary parameter The modified value and the suggested modified value of the second RAN auxiliary parameter.

Specifically, if the first cell and the second cell are both in the 3GPP network of the LTE system, the first control node 3300 may be the first base station, and the second control node may be the second base station.

If the first cell and the second cell are both in the 3GPP network of the UMTS system, the first control node 3 300 may be the first RNC, and the second control node may be the second RNC.

If the first cell is in the LTE system and the second cell is in the UMTS network, the first control node 3300 may be the first base station, and the second control node may be the second RNC.

If the first cell is in the 3GPP network of the UMT S system, and the second cell is in the network of the LTE system, the first control node 3 300 may be the first RNC, and the second control node may be the second base station.

It should be noted that, in the first control node 3 300 provided by the embodiment of the present invention, In the unit module, the receiving unit 3 302 can be implemented by a receiver, and the updating unit 3 303 can be implemented by a processor, and the sending unit 3 301 can be implemented by using a transmitter. The receiver, the processor, and the transmitter can communicate with each other, which is not specifically limited in this embodiment of the present invention.

Specifically, the method for performing network mobility optimization by using the first control node 3 300 may refer to the description of the eleventh embodiment, and details are not described herein again.

The first control node 3 300 of the present embodiment can be used to perform the method of the following eleventh embodiment. Therefore, the technical effects that can be obtained can also be referred to the description in the following eleventh embodiment. Make a specific explanation.

Example VII.

The embodiment of the present invention provides a second control node 34 00 . As shown in FIG. 34 , the second control node 34 00 includes: a receiving unit 34 01 and a sending unit 34 02.

The receiving unit 34 01 is configured to receive a first message sent by the first control node, where the first message is used to request a second RAN auxiliary parameter, where the first control node is a control node to which the first cell belongs, and the second control node 34 00 is The control node to which the second cell belongs, the second RAN auxiliary parameter is the RAN auxiliary parameter of the second cell.

The sending unit 34 02 is configured to send a second message to the first control node, where the second message carries the second RAN auxiliary parameter.

Optionally, the first message may carry the first RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell. This embodiment of the present invention does not specifically limit this.

Further, the receiving unit 34 01 is further configured to: after the sending unit 34 02 sends the second message to the first control node, receive the fourth message sent by the first control node, where the fourth message carries the updated first RAN auxiliary parameter. The first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

Further, as shown in FIG. 35, the second control node 34 00 further includes an update unit 34 03.

The updating unit 34 03 is configured to update the second RAN auxiliary parameter according to the updated first RAN auxiliary parameter after the receiving unit 34 01 receives the fourth message sent by the first control node. Optionally, the receiving unit 3401 is configured to: after the sending unit 3402 sends the second message to the first control node, receive the fifth message sent by the first control node, where the fifth message carries the modified value of the first RAN auxiliary parameter and the a suggested modified value of the second RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell;

The updating unit 3403 is configured to update the second RAN auxiliary parameter according to the modified value of the first auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

Specifically, if the first cell and the second cell are both in the LTE standard 3GPP network, the first control node may be the first base station, and the second control node 3400 may be the second base station.

If the first cell and the second cell are both in the UMTS 3GPP network, the first control node may be the first RNC, and the second control node 3400 may be the second RNC.

If the first cell is in the 3GPP network of the LTE system, and the second cell is in the UMTS network, the first control node may be the first base station, and the second control node 3400 may be the second RNC.

If the first cell is in the 3GPP network of the UMTS system, and the second cell is in the network of the LTE system, the first control node may be the first RNC, and the second control node 3400 may be the second base station. It should be noted that, in the unit module of the second control node 3400 provided by the embodiment of the present invention, the receiving unit 3401 may be specifically implemented by a receiver, and the updating unit 3403 may be specifically implemented by a processor, and the sending unit 3402 may specifically pass The transmitter is implemented. The receiver, the processor, and the transmitter can communicate with each other, which is not specifically limited in this embodiment of the present invention.

Specifically, the method for performing network mobility optimization by using the second control node 3400 may refer to the description of the eleventh embodiment, and details are not described herein again.

The second control node 3400 of the present embodiment can be used to perform the method of the following eleventh embodiment. Therefore, the technical effects that can be obtained can also be referred to the description in the following eleventh embodiment. Specific explanation.

Example VIII.

The embodiment of the invention provides a system 3600 for network mobility optimization, such as As shown in Figure 36, system 3600 includes:

The first control node 3 300 as described in the sixth embodiment, and the second control node 34 00 as described in the seventh embodiment.

For a specific description of the first control node 3 3 00, reference may be made to the sixth embodiment. For a detailed description of the second control node 340, reference may be made to the seventh embodiment, and the embodiments of the present invention are not described herein again.

Specifically, the method for performing network mobility optimization by using the first control node 3 3 00 and the second control node 34 00 may refer to the description of the eleventh embodiment, and details are not described herein again.

Since the system 36 00 of the present embodiment can be used to perform the method of the following eleventh embodiment, the technical effects that can be obtained can also be referred to the description in the following eleventh embodiment, and will not be specifically described herein. .

Example IX.

An embodiment of the present invention provides a method for network mobility optimization, in which a UE switches from a source cell to a target cell, and offloads 3GPP network traffic to a non-3GPP network in the target cell. As shown in FIG. 3, the method includes :

S 301: The UE obtains an interval length, where the interval time is a time difference between a time when the UE switches to the target cell and a time when the UE divides the 3GPP network traffic by the target cell through the non-3GPP network.

The time at which the UE splits the traffic of the 3GPP network through the non-3GPP network by the target cell (the end time of the interval length) may specifically include:

The UE completes the time when the designated service is offloaded to the non-3GPP network in the target cell.

The time at which the UE switches to the target cell (the starting time of the interval length) may specifically include:

The UE successfully sends a handover complete message or is equivalent to a handover complete message in the target cell. The moment of the message.

The embodiment of the present invention does not specifically limit the start time and the end time of the interval length.

S 302. The UE sends an interval length to the target control node, where the target control node is a control node to which the target cell belongs.

It should be noted that, in the embodiment of the present invention, when the target cell is in a different 3GPP network, the associated control nodes are not the same.

Exemplarily, if the target cell is in the LTE standard 3GPP network, the target control node may specifically be the target eNB.

Exemplarily, if the target cell is in the UMTS standard 3GPP network, the target control node may specifically be the target RN (:.

It should be noted that the foregoing is only a 3GPP network of the LTE system and a 3GPP network of the UMTS system. For example, the embodiment of the present invention may be applied to other types of networks, which is not specifically limited in this embodiment of the present invention. No longer here - list instructions.

According to the network mobility optimization method provided by the embodiment of the present invention, the UE may obtain the interval length and send the interval length to the target control node, where the interval length is the time when the UE switches to the target cell and the UE is in the UE. The time difference of the time when the target cell splits the 3GPP network traffic through the non-3GPP network. In this way, the target control node can determine whether the UE has an unnecessary handover according to the length of the interval, and notify the source control node or the SRC in time when the UE has an unnecessary handover, so that the source control node can modify the handover target selection policy or The first RAN auxiliary parameter is updated, or the SRC may notify the source control node to update the first RAN auxiliary parameter in time, thereby preventing the UE from continuously switching unnecessary in the source cell. On the one hand, the signaling overhead of the system is saved. On the other hand, the problem of cell handover failure in the cell switching process is also prevented, and the user experience is improved, thereby achieving the purpose of network mobility optimization.

An embodiment of the present invention provides a method for network mobility optimization, in which a UE is handed over from a source cell to a target cell, and the 3GPP network traffic is offloaded to the non-3GPP network in the target cell. As shown in FIG. 4, the method includes: S401. The target control node receives the interval length sent by the UE, where the interval time is a time difference between a time when the UE switches to the target cell and a time when the UE splits the 3GPP network traffic by the non-3GPP network.

The target control node is a control node to which the target cell belongs.

For the time when the UE is used to offload the 3GPP network traffic through the non-3GPP network, and the time when the UE is handed over to the target cell, refer to the description of the embodiment shown in FIG. 3, which is not described herein again.

S402. The target control node determines whether the interval length is less than a first preset threshold.

It should be noted that, when the starting point of the interval length is different, the value of the first preset threshold is not the same, which is not specifically limited in the embodiment of the present invention.

S403. If the value is smaller, the target control node sends the first indication message to the source control node or the SRC, where the first indication message is used to indicate that the UE has performed an unnecessary handover.

The source control node is a control node to which the source cell belongs.

A person skilled in the art can easily understand that the first indication message may be a message formed by adding an indicator or information indicating that the UE has an unnecessary handover in the existing message, or may be a newly added message. The embodiment of the invention is not specifically limited thereto.

It should be noted that, in the embodiment of the present invention, when the target cell and/or the source cell are in different 3GPP networks, the associated control nodes are not the same.

For example, if the source cell and the target cell are both in the LTE standard 3GPP network, the source control node may be the source eNB, and the target control node may be the target eNB.

The target control node sends the first indication message to the source control node, which may specifically include:

The target eNB sends the X2 interface message to the source eNB through the X2 interface; or the target eNB forwards the first indication message source eNB through the MME.

For example, if the source cell and the target cell are both in the UMTS standard 3GPP network, the source control node may be an RNC, and the target control node may be a target RN (:.

The target control node sends the first indication message to the source control node, which may specifically include: The target RNC forwards the first indication message to the source RN through the SGSN (:.

For example, if the source cell is in the LTE standard 3GPP network and the target cell is in the UMTS system, the source control node may be the source eNB, and the target control node may be the target RN (:.

The target RNC forwards the first indication message to the source eNB through the SGSN and the MME.

For example, if the source cell is in the 3GPP network of the UMTS system and the target cell is in the LTE system, the source control node may be the source RNC, and the target control node may be the target eNB.

The target eNB forwards the first indication message to the source RN through the MME and the SGSN (:.

It should be noted that the foregoing is only an example of the inter-network interaction and the intra-network interaction of the 3GPP network of the LTE system and the 3GPP network of the UMTS system. Of course, the embodiment of the present invention can also be applied to networks of other standards, and the present invention The embodiment is not specifically limited thereto, and is not described here again.

Further, after the target control node sends the first indication message to the source control node, the method may further include:

The target control node receives the first message sent by the source control node, where the first message is used to request the second RAN auxiliary parameter, and the second RAN auxiliary parameter is the RAN auxiliary parameter of the target cell.

The target control node sends a second message to the source control node, and the second message carries the second RAN auxiliary parameter.

Further, as shown in FIG. 5, after the target control node sends the first indication message to the source control node or the SRC (step S403), the method may further include:

S404a: The target control node receives the fourth message sent by the source control node, and the fourth message carries the updated first RAN auxiliary parameter. The first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

S405a. The target control node updates the second RAN auxiliary parameter according to the updated first RAN auxiliary parameter.

The second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell.

It should be noted that the step S405a is an optional step, that is, the target control node may only perform the steps S401-S404a, which is not specifically limited in the embodiment of the present invention.

Optionally, as shown in FIG. 6, after the target control node sends the first indication message to the source control node or the SRC (step S403), the method may further include:

S404b: The target control node receives the fifth message sent by the source control node, where the fifth message carries the modified value of the first RAN auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

The first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell.

S405b. The target control node updates the second RAN auxiliary parameter according to the modified value of the first auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

It should be noted that the modified value of the first RAN auxiliary parameter, the recommended modified value of the second RAN auxiliary parameter, and the updated value of the first RAN auxiliary parameter described below may be an actual value or a scaled index value. The embodiment of the present invention does not specifically limit this.

It should be noted that, as described in the preamble of the specific implementation, the first/second auxiliary parameter may include an LTE network parameter, a WLAN network parameter, a WLAN network identifier, a J'J table, etc., and the LTE parameter may include an LTE network. RSRP, RSRQ; WLAN network parameters may include uplink and downlink backhaul rates of the WLAN network, RCPI/RSNI of the WLAN network, and the like, which are not specifically limited in this embodiment of the present invention. Therefore, when the target control node updates the second RAN auxiliary parameter, it may be that only one or several parameters of the second RAN auxiliary parameter are updated, or all parameters of the second RAN auxiliary parameter may be updated, the present invention The embodiment does not specifically limit this.

Exemplarily, it is assumed that the target control node finds that the RSRP low threshold in the updated first RAN auxiliary parameter is _90 dBm, and the RSRP low threshold in the second RAN auxiliary parameter is -60 dBm, which may be correspondingly reduced. Low RSRP in the second RAN auxiliary parameter The threshold is _70dBm.

It should be noted that the fourth message and the fifth message in the foregoing embodiment may be a message formed by adding new information to an existing message, or may be a newly added message, which is not used by the embodiment of the present invention. Specifically limited.

According to the network mobility optimization method provided by the embodiment of the present invention, the target control node receives the interval length sent by the UE, where the interval time is the time when the UE switches to the target cell and the UE transmits the 3GPP network traffic through the non-3GPP network in the target cell. The time difference at the time of the split. Then, the target control node determines whether the interval length is less than the first preset threshold. If the target control node sends the first indication message to the source control node or the SRC, the first indication message indicates that the UE has an unnecessary handover. In this way, the source control node can modify the handover target selection policy or update the first RAN auxiliary parameter in time, or the SRC can notify the source control node to update the first RAN auxiliary parameter in time, thereby preventing the UE from continuously performing unnecessary handover in the source cell. A phenomenon occurs. On the one hand, the signaling overhead of the system is saved. On the other hand, the problem of cell handover failure in the cell handover process is also prevented, and the user experience is improved, thereby achieving the goal of network mobility optimization.

An embodiment of the present invention provides a method for network mobility optimization, in which a UE switches from a source cell to a target cell, and offloads 3GPP network traffic to a non-3GPP network in the target cell. As shown in FIG. 7, the method includes:

The S70K source control node receives the first indication message sent by the target control node, where the first indication message is used to indicate that the UE has performed an unnecessary handover.

The source control node is a control node to which the source cell belongs, and the target control node is a control node to which the target cell belongs.

S702. If the number of unnecessary handovers of the UE received by the source control node is greater than the second preset threshold within a preset time, the source control node modifies the handover target selection policy; or the source control node updates the first RAN auxiliary parameter.

The first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

That is, if the number of unnecessary handovers of the UE received by the source control node is greater than the second preset threshold within a preset time, the source cell may be optimized by modifying the handover target selection policy of the source cell or updating the first RAN auxiliary parameter. Network parameters. Exemplarily, the handover target selection policy may be modified by: determining a target cell that is not to be switched as a low priority candidate handover target cell; or

Change the priority switching policy to the policy of prioritizing non-3GPP network offloading.

Of course, the above is only an exemplary way to modify the switching target selection policy, and the switching target selection policy may be modified in other ways, which is not specifically limited in the embodiment of the present invention.

Further, before the source control node updates the first RAN auxiliary parameter, the method may further include:

The source control node sends a first message to the target control node, the first message is used to request the second RAN auxiliary parameter, and the second RAN auxiliary parameter is the RAN auxiliary parameter of the target cell.

The source control node receives the second message sent by the target control node, and the second message carries the second RAN auxiliary parameter.

The source control node updates the first RAN auxiliary parameter, which may specifically include:

The source control node updates the first RAN assist parameter according to the second RAN assist parameter. Similar to the above description, when the source control node updates the first RAN auxiliary parameter, it may be that only one or several parameters of the first RAN auxiliary parameter are updated, or all parameters in the first RAN auxiliary parameter may be updated. The embodiment of the present invention does not specifically limit this. Exemplarily, if the source control node finds that the RSRP low threshold in the second RAN auxiliary parameter is -90 dBm, and the RSRP low threshold in the first RAN auxiliary parameter is -60 dBm, the first RAN may be correspondingly reduced. The RSRP low threshold in the auxiliary parameters is -70dBm.

The source control node sends the first message to the target control node, where the first message is used. The requesting the second RAN auxiliary parameter may specifically include:

The source eNB sends an X2 setup request message to the target eNB, and the X2 request message carries the first RAN auxiliary parameter for requesting the second RAN auxiliary parameter.

The source control node receives the second message sent by the target control node, and the second message carries the second RAN auxiliary parameter, which may specifically include:

The source eNB receives the X2 setup response message sent by the target eNB, and the X2 setup response message carries the second RAN assist parameter.

Or,

The source control node sends a first message to the target control node, where the first message is used to request the second RAN auxiliary parameter, which may include:

The source eNB forwards the RAN information request message to the target eNB through the MME, and the RAN information request message is used to request the second RAN auxiliary parameter.

The source eNB receives the RAN information message forwarded by the target eNB through the MME, and the RAN information message carries the second RAN auxiliary parameter.

The source RNC forwards the RAN information request message to the target RNC through the SGSN, and the RAN information request message is used to request the second RAN auxiliary parameter.

The source RNC receives the RAN information message forwarded by the target RNC through the SGSN, and the RAN information message carries the second RAN auxiliary parameter.

Exemplarily, if the source cell is in the LTE system of the 3GPP network, and the target cell is in the UMTS system, the source control node may be the source eNB, and the target control node may be the target RN (:. The source control node sends a first message to the target control node, where the first message is used to request the second RAN auxiliary parameter, which may include:

The source eNB forwards the RAN information request message to the target RNC through the MME and the SGSN, and the RAN information request message is used to request the second RAN auxiliary parameter.

The source eNB receives the RAN information message forwarded by the target RNC through the SGSN and the MME, and the RAN information message carries the second RAN auxiliary parameter.

For example, if the source cell is in the 3GPP network of the UMTS system and the target cell is in the 3GPP network of the LTE system, the source control node may be the source RNC, and the target control node may be the target eNB.

The source RNC forwards the RAN information request message to the target eNB through the SGSN, and the RAN information request message is used to request the second RAN auxiliary parameter.

The source RNC receives the RAN information message forwarded by the target eNB through the MME and the SGSN, and the RAN information message carries the second RAN auxiliary parameter.

It should be noted that the first message and the second message in the foregoing embodiment are all formed by adding new information to the existing message. Of course, the first message and the second message may also be newly added. The message is not specifically limited in this embodiment of the present invention.

Optionally, before the source control node updates the first RAN auxiliary parameter, the method further includes:

The source control node receives the third message sent by the SRC, and the third message carries the updated value of the first RAN auxiliary parameter. The updating, by the source control node, the first RAN auxiliary parameter may include: the source control node updating the first RAN auxiliary parameter according to the updated value of the first RAN auxiliary parameter.

Similar to the above description, the updated value of the first RAN auxiliary parameter may be one of the first RAN auxiliary parameter or an updated value of several parameters, or may be an updated value of all the parameters, which is not specifically described in this embodiment of the present invention. limited.

It should be noted that the third message in the embodiment of the present invention may be a message that is added with new information in the existing message, and may be a newly added message, which is not specifically limited in the embodiment of the present invention.

Further, after the source control node updates the first RAN auxiliary parameter, the method may further include:

The source control node sends a fourth message to the target control node, and the fourth message carries the updated first RAN auxiliary parameter; or

The source control node sends a fifth message to the target control node, and the fifth message carries the modified value of the first RAN auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

Based on the network mobility optimization method provided by the embodiment of the present invention, the source control node receives the first indication message sent by the target control node, where the first indication message is used to indicate that the UE has an unnecessary handover. If the number of unnecessary handovers of the UE received by the source control node is greater than the second preset threshold within a preset time, the source control node modifies the handover target selection policy or updates the first RAN auxiliary parameter. This prevents the UE from continuously switching unnecessary in the source cell. On the one hand, the signaling overhead of the system is saved. On the other hand, the problem of cell handover failure in the cell handover process is also prevented, and the user experience is improved, thereby achieving the purpose of network mobility optimization.

An embodiment of the present invention provides a method for network mobility optimization, in which a UE switches from a source cell to a target cell, and offloads 3GPP network traffic to a non-3GPP network in the target cell. As shown in FIG. 8, the method includes :

The S 8 0 K S RC receives the first indication message sent by the target control node, where the first indication message is used to indicate that the UE has performed an unnecessary handover.

The target control node is a control node to which the target cell belongs.

S 8 02. If the UE in the access source control node is unnecessary within a preset time The number of handovers is greater than the second preset threshold, and the SRC sends a third message to the source control node, where the third message carries the updated value of the first RAN auxiliary parameter.

The first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell, and the source control node is a control node to which the source cell belongs.

For example, if the source cell and the target cell are both in the UMTS 3GPP network, the source control node may be the source RNC, and the target control node may be the target RN (:.

Based on the network mobility optimization method provided by the embodiment of the present invention, the SRC receives the first indication message sent by the target control node, where the first indication message is used to indicate that the UE has performed unnecessary handover. If the number of unnecessary handovers of the UE in the access control node is greater than the second preset threshold, the SRC sends a third message to the source control node, and the third message carries the updated value of the first RAN auxiliary parameter. . The source control node may update the first RAN auxiliary parameter according to the updated value of the first RAN auxiliary parameter, thereby preventing the UE from continuously performing unnecessary switching in the source cell. On the one hand, the signaling overhead of the system is saved; on the other hand, the problem of cell handover failure in the cell handover process is also prevented, and the user experience is improved, thereby achieving the purpose of network mobility optimization. Embodiment 10

An embodiment of the present invention provides a method for network mobility optimization, in which a UE switches from a source cell to a target cell, and offloads 3GPP network traffic to a non-3GPP network in the target cell, specifically taking a cell handover in the LTE system as an example. For example, the control node (ie, the source control node) to which the source cell belongs is specifically the source base station, and the control node (ie, the target control node) to which the target cell belongs is specifically the target base station. As shown in FIG. 9, the method includes:

S901. The UE acquires an interval length.

The interval length is a time difference between a time when the UE switches to the target cell and a time when the UE splits the 3GPP network traffic by the non-3GPP network in the target cell.

Specifically, the time when the UE performs the offloading of the 3GPP network traffic by the non-3GPP network and the time when the UE is handed over to the target cell may refer to the description of the embodiment shown in FIG. 3, which is not described herein again.

S902. The UE sends the interval length to the target eNB.

S903. The target eNB receives the interval length sent by the UE.

S904. The target eNB determines whether the interval length is less than a first preset threshold.

S905. If the target eNB sends the first indication message to the source eNB, the first indication message is used to indicate that the UE has performed an unnecessary handover.

Specifically, the sending, by the target _e NB, the first indication message to the eNB can be implemented as follows:

This embodiment of the present invention does not specifically limit this.

S906. The source eNB receives the first indication message sent by the target eNB.

S907a, if the number of unnecessary handovers of the UE received by the source eNB is greater than the second preset threshold, the source eNB sends a first message to the target eNB, where the first message is used to request the second RAN auxiliary parameter.

Specifically, the source eNB sends a first message to the target eNB, where the first message is used for the request. The second RAN auxiliary parameter can be implemented as follows:

The source eNB sends an X2 setup request message to the target eNB, and the X2 setup request message carries the first RAN auxiliary parameter for requesting the second RAN auxiliary parameter. Alternatively, the source eNB forwards the RAN information request message to the target eNB through the MME, and the RAN information request message is used to request the second RAN auxiliary parameter.

This embodiment of the present invention does not specifically limit this.

S 908a. The target eNB receives the first message sent by the source eNB.

S909a: The target eNB sends a second message to the source eNB, where the second message carries the second RAN auxiliary parameter.

S910a. The source eNB receives the second message sent by the target eNB, and updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter carried in the second message.

Specifically, if the source eNB sends the X2 setup request message to the target eNB, the receiving, by the source eNB, the second message sent by the target eNB may include:

If the source eNB forwards the RAN information request message to the target eNB through the MME, the receiving, by the source eNB, the second message sent by the target eNB may include:

Optionally, the embodiment of the present invention further provides a method for network mobility optimization, as shown in FIG. 10, that is, after step S906, step S907b may also be performed:

S907b: If the number of unnecessary handovers of the UE received by the source eNB is greater than the second preset threshold within a preset time, the source eNB modifies the handover target selection policy.

For the description of the steps S901-S906, reference may be made to the related description in the embodiment shown in FIG. 9, and details are not described herein again.

Optionally, the embodiment of the present invention further provides a method for network mobility optimization, as shown in FIG. 11, including:

The S110K UE obtains the interval length, and the interval length is the UE switching to the destination. The time difference between the time of the target cell and the time when the UE splits the 3GPP network traffic through the non-3GPP network in the target cell.

S 1102: The UE sends the interval length to the target eNB.

51103. The target eNB receives an interval length sent by the UE.

51104. The target eNB determines whether the interval length is less than a first preset threshold.

S105. If the target eNB sends the first indication message to the SRC, the first indication message is used to indicate that the UE has performed an unnecessary handover.

S106. The SRC receives the first indication message sent by the target eNB.

If the number of unnecessary handovers of the UE in the access source eNB is greater than the second preset threshold, the SRC sends a third message to the source eNB, where the third message carries the updated value of the first RAN auxiliary parameter. .

51108. The source eNB receives the third message, and updates the first RAN auxiliary parameter according to the updated value of the first RAN auxiliary parameter.

An embodiment of the present invention provides a method for network mobility optimization, in which a UE switches from a source cell to a target cell, and offloads 3GPP network traffic to a non-3GPP network in the target cell, specifically taking a cell handover in the UMTS system as an example. For example, it is assumed that the control node (ie, the source control node) to which the source cell belongs is specifically the source RNC, and the control node (ie, the target control node) to which the target cell belongs is specifically the target RNC. As shown in FIG. 12, the method includes:

The S120K UE obtains the interval length, which is the time difference between the time when the UE switches to the target cell and the time when the UE splits the 3GPP network traffic through the non-3GPP network.

S 1202: The UE sends the interval length to the target RN (:. S1203. The target RNC receives the interval length sent by the UE.

S1204. The target RNC determines whether the interval length is less than a first preset threshold.

S1205. If the value is smaller, the target RNC forwards the first indication message to the source RNC by using the SGSN, where the first indication message is used to indicate that the UE has performed an unnecessary handover.

S 1206. The source RNC receives the first indication message sent by the target RNC.

S1207a: If the number of unnecessary handovers of the UE received by the source RNC is greater than the second preset threshold within a preset time, the source RNC forwards the RAN information request message to the target RNC through the SGSN, where the RAN information request message is used for the request. Two RAN auxiliary parameters.

S 1208a. The target RNC receives the RAN information request message sent by the source RNC.

S 1209a The target RNC forwards the RAN information message to the source RNC through the SGSN, and the RAN information message carries the second RAN auxiliary parameter.

The S1210a source RNC receives the RAN information message and updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter carried in the RAN information message.

Optionally, the embodiment of the present invention further provides a method for network mobility optimization, as shown in FIG. 13, that is, after step S1206, step S1207b may be further performed:

S1207b: If the number of unnecessary handovers of the UE received by the source RNC is greater than the second preset threshold within a preset time, the source RNC modifies the handover target selection policy.

For the description of the steps S1201-S1206, reference may be made to the related description in the embodiment shown in FIG. 12, and details are not described herein again.

Optionally, the embodiment of the present invention further provides a method for network mobility optimization, as shown in FIG. 14, which includes:

The S140K UE obtains the interval length, which is the time difference between the time when the UE switches to the target cell and the time when the UE splits the 3GPP network traffic through the non-3GPP network.

For example, the time when the UE is used to offload the 3GPP network traffic by the non-3GPP network and the time when the UE is handed over to the target cell may refer to the description of the embodiment shown in FIG. 3, which is not described herein again. S 1402: The UE sends the interval length to the target RN (:.

S1403. The target RNC receives the interval length sent by the UE.

51404. The target RNC determines whether the interval length is less than a first preset threshold.

If the RNC sends a first indication message to the SRC, the first indication message is used to indicate that the UE has performed an unnecessary handover.

S406. The SRC receives the first indication message sent by the target SRC.

If the number of unnecessary handovers of the UE in the access source RNC is greater than the second preset threshold, the SRC sends a third message to the source RNC, where the third message carries the updated value of the first RAN auxiliary parameter. .

51408. The source RNC receives the third message, and updates the first RAN auxiliary parameter according to the updated value of the first RAN auxiliary parameter.

An embodiment of the present invention provides a network mobility optimization method, in which a UE switches from a source cell to a target cell, and offloads 3GPP network traffic to a non-3GPP network in a target cell, specifically, a cell handover from an LTE system to a UMTS standard. For example, the control node (ie, the source control node) to which the source cell belongs is specifically the source eNB, and the control node (ie, the target control node) to which the target cell belongs is specifically the target RNC. As shown in FIG. 15, the method includes:

The S150K UE obtains the interval length, which is the time difference between the time when the UE switches to the target cell and the time when the UE splits the 3GPP network traffic through the non-3GPP network.

S 1502: The UE sends the interval length to the target RN (:.

S1503. The target RNC receives the interval length sent by the UE.

S1504. The target RNC determines whether the interval length is less than a first preset threshold.

S1505. If the target RNC is forwarded to the source eNB by using the SGSN and the MME, the first indication message is used to indicate that the UE has performed unnecessary handover. The SI 506 receives the first indication message sent by the target RNC.

S1507a, if the number of unnecessary handovers of the UE received by the source eNB is greater than the second preset threshold, the source eNB forwards the RAN information request message to the target RNC through the MME and the SGSN, and the RAN information request message is used. The second RAN auxiliary parameter is requested.

S 1508a. The target RNC receives the RAN information request message sent by the source eNB.

S 1509a The target RNC forwards the RAN information message to the source eNB through the SGSN, and the RAN information message carries the second RAN auxiliary parameter.

The S1510a source eNB receives the RAN information message and updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter carried in the RAN information message.

Optionally, the embodiment of the present invention further provides a method for network mobility optimization, as shown in FIG. 16, that is, after step S1506, step S1507b may be further performed:

S1507b: If the number of unnecessary handovers of the UE received by the source eNB is greater than the second preset threshold within a preset time, the source eNB modifies the handover target selection policy.

For the description of the steps S1501-S1506, reference may be made to the related description in the embodiment shown in FIG. 15, and details are not described herein again.

Optionally, the embodiment of the present invention further provides a method for network mobility optimization, as shown in FIG. 17, including:

The S170K UE obtains the interval length, which is the time difference between the time when the UE switches to the target cell and the time when the UE splits the 3GPP network traffic through the non-3GPP network.

S 1702. The UE sends the interval length to the target RN (:.

S 1703. The target RNC receives the interval length sent by the UE.

S1704: The target RNC determines whether the interval length is less than a first preset threshold. S 1705. If the value is less than, the target RNC sends a first indication message to the SRC, where the first indication message is used to indicate that the UE has performed an unnecessary handover.

S1706: The SRC receives the first indication message sent by the target SRC.

S1707: If the number of unnecessary handovers of the UE in the access source eNB is greater than the second preset threshold, the SRC sends a third message to the source eNB, where the third message carries the update of the first RAN auxiliary parameter. value.

S 1708. The source eNB receives the third message, and updates the first RAN auxiliary parameter according to the updated value of the first RAN auxiliary parameter.

It should be noted that the network mobility optimization method provided by the embodiment of the present invention is also applicable to a scenario in which a UE is handed over from a cell of a UMTS system to a cell of an LTE standard, and the implementation scheme in this scenario is switched from the cell in the LTE system to the cell in the LTE system. The implementation scheme of the cell in the UMTS system is similar, except that when the UE is handed over from the cell of the UMTS system to the cell of the LTE system, the control node (ie, the source control node) to which the source cell belongs is specifically the source RNC, and the target cell belongs to The control node (ie, the target control node) is specifically the target eNB. The source RNC interacts with the target eNB through the SGSN and the MME, and the target MME interacts with the source RNC through the MME and the SGSN.

Specifically, when the UE is switched from the cell of the UMTS system to the cell of the LTE system, the method for optimizing the network mobility may refer to the description of the embodiment shown in FIG. 15 to FIG. The method of sexual optimization is not elaborated.

It should be noted that the above embodiment is only an example of the inter-network interaction and the intra-network interaction of the 3GPP network of the LTE system and the 3GPP network of the UMTS system. Of course, the embodiment of the present invention can also be applied to networks of other standards. The embodiment of the present invention does not specifically limit this, and is not illustrated here.

The source control node sends a fourth message to the target control node, and the fourth message carries the updated first RAN auxiliary parameter.

The target control node receives the fourth message sent by the source control node.

Optionally, the first RAN auxiliary parameter carried by the target control node according to the fourth message The second RAN auxiliary parameter is updated.

Optionally, after the source control node updates the first RAN auxiliary parameter, the method further includes:

The target control node receives the fifth message sent by the source control node, and updates the second RAN auxiliary parameter according to the modified value of the first RAN auxiliary parameter carried in the fifth message and the recommended modified value of the second RAN auxiliary parameter.

According to the network mobility optimization method provided by the embodiment of the present invention, the UE may obtain the interval length and send the interval length to the target control node, where the interval length is the time when the UE switches to the target cell and the UE is in the UE. The time difference of the time at which the target cell splits the 3GPP network traffic through the non-3GPP network. In this way, the target control node can determine whether the UE has an unnecessary handover according to the length of the interval, and notify the source control node or the S RC in time when the UE has an unnecessary handover, so that the source control node can modify the handover target selection policy in time. Or, the first RAN auxiliary parameter is updated, or the S RC may notify the source control node to update the first RAN auxiliary parameter in time, thereby preventing the UE from continuously switching unnecessary in the source cell. On the one hand, the signaling overhead of the system is saved. On the other hand, the problem of cell handover failure in the cell switching process is also prevented, and the user experience is improved, thereby achieving the purpose of network mobility optimization.

Embodiment 11

An embodiment of the present invention provides a method for network mobility optimization, which is specifically shown in FIG. 18, and includes:

S 1 8 0 K The first control node sends a first message to the second control node, and the first message is used to request the second RAN auxiliary parameter.

The first control node is a control node to which the first cell belongs, the second control node is a control node to which the second cell belongs, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the second cell.

Optionally, the first message may carry the first RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell, which is not specifically limited by the embodiment of the present invention. Set.

S 1802. The first control node receives the second message sent by the second control node, and the second message carries the second RAN auxiliary parameter.

S 1803. The first control node updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter.

Similar to the description of the ninth embodiment, when the first control node updates the first RAN auxiliary parameter, it may be that only one or several parameters of the first RAN auxiliary parameter are updated, or the first RAN auxiliary parameter may be updated. All the parameters in the embodiment of the present invention are not described herein again.

Further, as shown in FIG. 19, after the first control node updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter (step S1803), the method may further include:

S1804a: The first control node sends a fourth message to the second control node, where the fourth message carries the updated first RAN auxiliary parameter.

Optionally, as shown in FIG. 20, after the first control node updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter (step S1803), the method may further include:

S1804b: The first control node sends a fifth message to the second control node, where the fifth message carries the modified value of the first RAN auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

It should be noted that, in the embodiment of the present invention, when the first cell and/or the second cell are in different 3GPP networks, the associated control nodes are not the same.

For example, if the first cell and the second cell are both in the 3GPP network of the LTE system, the first control node may be the first eNB, and the second control node may be the second eNB.

For example, if the first cell and the second cell are both in the 3GPP network of the UMTS system, the first control node may be the first RNC, and the second control node may be the second RN (:.

For example, if the first cell is in the 3GPP network of the LTE system and the second cell is in the UMTS system, the first control node may be the first eNB, and the second control node may be the second RNC.

Exemplarily, if the first cell is in the UMTS standard 3GPP network, the second cell In the network of the LTE system, the first control node may be a first RNC, and the second control node may be a second eNB.

It should be noted that the first message, the second message, the fourth message, and the fifth message in the embodiment of the present invention may be a message formed by adding new information to an existing message, or may be newly added. The message is not specifically limited in this embodiment of the present invention.

Based on the network mobility optimization method provided by the embodiment of the present invention, the first control node sends a first message to the second control node, where the first message is used to request the second RAN auxiliary parameter; then the first control node receives the second control node. Sending a second message, the second message carries a second RAN auxiliary parameter; and the first control node further updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter. The phenomenon that the UE does not need to switch from the first cell to the second cell may be prevented by the first control node updating the first RAN auxiliary parameter according to the second RAN auxiliary parameter. On the one hand, the signaling overhead of the system is saved, and on the other hand, the problem of cell handover failure in the cell handover process is prevented, and the user's physical risk is improved, thereby achieving the goal of network mobility optimization.

An embodiment of the present invention provides a method for network mobility optimization, which is specifically shown in FIG. 21, and includes:

S210K The second control node receives the first message sent by the first control node, and the first message is used to request the second RAN auxiliary parameter.

Optionally, the first message may carry the first RAN auxiliary parameter, and the first RAN auxiliary parameter is the RAN auxiliary parameter of the first cell, which is not specifically limited in this embodiment of the present invention.

S2102. The second control node sends a second message to the first control node, where the second message carries the second RAN auxiliary parameter. Further, as shown in FIG. 22, after the second control node sends the second message to the first control node (step S2102), the method may further include:

S2103a: The second control node receives the fourth message sent by the first control node, and the fourth message carries the updated first RAN auxiliary parameter.

S 2104a. The second control node updates the second RAN auxiliary parameter according to the updated first RAN auxiliary parameter.

It should be noted that the step S2104a is an optional step, that is, the second control node may only perform the steps S2101-S2103a, which is not specifically limited in this embodiment of the present invention.

Optionally, as shown in FIG. 23, after the second control node sends the second message to the first control node (step S2102), the method may further include:

S2103b: The second control node receives the fifth message sent by the first control node, where the fifth message carries the modified value of the first RAN auxiliary parameter and the recommended modified value of the second RAN auxiliary parameter.

The first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell;

S 2104b. The second control node updates the second RAN auxiliary parameter according to the modified value of the first auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

Similar to the description of the ninth embodiment, when the second control node updates the second RAN auxiliary parameter, it may be that only one or several parameters of the second RAN auxiliary parameter are updated, or the second RAN auxiliary parameter may be updated. All the parameters in the embodiment of the present invention are not described herein again.

Exemplarily, if the first cell is in the LTE system of the 3GPP network, and the second cell is in the UMTS system, the first control node may be the first eNB, and the second The control node may specifically be a second RNC.

For example, if the first cell is in the 3GPP network of the UMTS system and the second cell is in the LTE network, the first control node may be the first RNC, and the second control node may be the second eNB.

According to the method for network mobility optimization provided by the embodiment of the present invention, the second control node receives the first message sent by the first control node, where the first message is used to request the second RAN auxiliary parameter; then the second control node sends the second message. To the first control node, the second message carries the second RAN auxiliary parameter. In this way, the first control node may update the first RAN auxiliary parameter according to the second RAN auxiliary parameter, thereby preventing the UE from unnecessary switching from the first cell to the second cell. On the one hand, the signaling overhead of the system is saved. On the other hand, the problem of cell handover failure in the cell handover process is also prevented, and the user experience is improved, thereby achieving the purpose of network mobility optimization.

It will be apparent to those skilled in the art that, for the convenience and brevity of the description, the above described devices are only exemplified by the division of the above functional modules. In practical applications, the above functions may be assigned differently according to needs. The function module is completed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed. Another point, the mutual coupling or direct coupling shown or discussed The or communication connection may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.

The units described as separate components may or may not be physically separate, and 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 to achieve the objectives of the embodiment of the present invention.

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 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 may be embodied in the form of a software product in the form of a software product, or a part of the technical solution, which is stored in a storage medium. The instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods of the various embodiments of the present invention. The foregoing storage medium includes: a U disk, a removable 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. .

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Claim

A user equipment UE, in a scenario where the UE is handed over from a source cell to a target cell, and the third-generation partner plan 3GPP network traffic is offloaded to a non-3GPP network in the target cell, where The UE includes: an acquiring unit and a sending unit;

The acquiring unit is configured to acquire an interval length, where the interval time is a time when the UE switches to the target cell, and the UE uses the non-3GPP network to send the 3GPP network traffic in the target cell. The time difference of the time when the splitting is performed; the sending unit is configured to send the interval length to the target control node, where the target control node is a control node to which the target cell belongs.

2. The UE according to claim 1, wherein the time at which the UE offloads the 3GPP network traffic by using the non-3GPP network in the target cell includes:

The UE according to claim 1 or 2, wherein the time when the UE switches to the target cell includes:

Receiving, by the UE, a handover command message sent by the source cell or a message equivalent to a message of a handover command; or

a moment when the UE completes a random access procedure in the target cell; or a moment when the UE successfully sends a handover complete message or a message equivalent to a handover complete message in the target cell.

The UE according to any one of claims 1 to 3, wherein, if the target cell is in a 3GPP network of a long-term evolution LTE system, the target control node is specifically a target base station;

5. A target control node, applied to the user equipment UE to switch from the source cell to the destination In the scenario of the target cell, the target control node is the control node to which the target cell belongs, and the target control node is in the scenario that the target cell is to be used to offload the 3GPP network plan 3GPP network traffic to the non-3GPP network. The method includes: a receiving unit, a determining unit, and a sending unit;

The receiving unit is configured to receive an interval length of the UE, where the interval length is a time when the UE switches to the target cell, and the UE passes the non-3GPP network pair in the target cell. a time difference of a time at which the 3GPP network traffic is split;

The sending unit is configured to: if the target control node determines that the interval length is less than the first preset threshold, send a first indication message to a source control node or a single wireless controller SRC, the first indication message And indicating that the UE has an unnecessary handover, where the source control node is a control node to which the source cell belongs.

The target control node according to claim 5, wherein the time when the UE splits the 3GPP network traffic by using the non-3GPP network by the target cell includes:

The target control node according to claim 5 or 6, wherein the moment when the UE switches to the target cell includes:

The target control node according to any one of claims 5-7, wherein the receiving unit is further configured to send, by the sending unit, a first indication message to source control. After the node, the first message sent by the source control node is received, where the first message is used to request a second radio access network RAN auxiliary parameter, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

The target control node according to claim 8, wherein the first message carries a first RAN auxiliary parameter, and the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

The target control node according to any one of claims 5-9, wherein the receiving unit is further configured to: after the sending unit sends the first indication message to the source control node or the SRC, receive And a fourth message sent by the source control node, where the fourth message carries the updated first radio access network RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

The target control node according to claim 10, wherein the target control node further includes an update unit;

The target control node according to any one of claims 5-9, wherein the target control node further comprises an update unit;

The receiving unit is further configured to: after the sending, by the sending unit, the first indication message to the source control node or the SRC, receive the fifth message sent by the source control node, where the fifth message carries the first RAN auxiliary parameter a modified value and a suggested modified value of the second RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

And the updating unit is configured to update the second RAN auxiliary parameter according to the modified value of the first auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

The target control node according to any one of claims 5 to 2, wherein, if the source cell and the target cell are both in a 3GPP network of a long term evolution LTE system, The source control node is specifically a source base station, and the target control node has The body is the target base station;

If the source cell and the target cell are both in the 3GPP network of the universal mobile communication system UMTS system, the source control node is specifically a source radio network controller RNC, and the target control node is specifically a target RNC;

If the source cell is in the 3GPP network of the UMTS system, the target cell is in the LTE system, the source control node is specifically a source RNC, and the target control node is specifically a target base station.

14. A source control node, configured to be used in a scenario where a user equipment UE is handed over from a source cell to a target cell, and in a scenario where the target cell divides 3GPP network plan 3GPP network traffic to a non-3GPP network, the source control The node is a control node to which the source cell belongs, and the source control node includes: a receiving unit, a modifying unit, or an updating unit;

The modifying unit is configured to: if the number of times that the UE received by the receiving unit does not need to be switched is greater than the second preset threshold, modify the switching target selection policy; or

The updating unit is configured to update the first radio access network RAN auxiliary parameter, where the number of unnecessary handovers of the UE received by the receiving unit is greater than a second preset threshold, in the preset time, the first The RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

The source control node according to claim 14, wherein the source control node further comprises a sending unit;

The sending unit is configured to: before the updating unit updates the first RAN auxiliary parameter, send a first message to the target control node, where the first message is used to request a second RAN auxiliary parameter, the second RAN The auxiliary parameter is the RAN auxiliary of the target cell Help parameter

The receiving unit is further configured to receive a second message sent by the target control node, where the second message carries the second R A N auxiliary parameter;

The update unit is specifically configured to:

The source control node according to claim 15, wherein the first message carries the first RAN auxiliary parameter.

The source control node according to claim 14, wherein the receiving unit is further configured to: before the updating unit updates the first RAN auxiliary parameter, receive a third message sent by a single wireless controller SRC, The third message carries an updated value of the first RAN auxiliary parameter;

The update unit is specifically configured to:

The source control node according to any one of claims 14-17, wherein the source control node further comprises a sending unit;

The sending unit is configured to: after the updating unit updates the first RAN auxiliary parameter, send a fifth message to the target control node, where the fifth message carries the modified value of the first RAN auxiliary parameter and the The suggested modified value of the second RAN auxiliary parameter.

The source control node according to any one of claims 14 to 19, wherein if the source cell and the target cell are both in a 3GPP network of a long-term evolution LTE system, the source control node is specifically a source base station, where the target control node is specifically a target base station;

If the source cell and the target cell are both in a 3GPP network of a universal mobile communication system UMTS system, the source control node is specifically a source radio network controller RNC. The target control node is specifically a target RNC;

If the source cell is in the 3GPP network of the LTE system, the target cell is in the UMTS system, the source control node is specifically a source base station, and the target control node is specifically a target RNC;

A single wireless controller SRC, which is applied to a scenario where a user equipment UE is handed over from a source cell to a target cell, and the third-generation partner plan 3GPP network traffic is offloaded to a non-3GPP network in the target cell, and its characteristics are The SRC includes: a receiving unit and a sending unit;

If the number of unnecessary handovers of the UE in the access source control node is greater than the second preset threshold, the SRC sends a third message to the source control node, where the third message carries the first An update value of the RAN auxiliary parameter of the radio access network, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell, and the source control node is a control node to which the source cell belongs.

The SRC according to claim 21, wherein, if the source cell and the target cell are both in a 3GPP network of a long-term evolution LTE system, the source control node is specifically a source base station, and the target control node is Specifically, it is a target base station;

If the source cell is in the 3GPP network of the UMTS system, the target cell is in the network of the LTE system, and the source control node is specifically a source RNC, and the source cell The standard control node is specifically a target base station.

2, a first control node, the first control node includes: a sending unit, a receiving unit, and an updating unit;

The first control node according to claim 23, wherein the first message carries the first RAN auxiliary parameter.

The first control node according to claim 23 or 24, wherein the sending unit is further configured to: after the updating unit updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter, Sending a fourth message to the second control node, where the fourth message carries the updated first RAN auxiliary parameter.

The first control node according to claim 23 or 24, wherein the sending unit is further configured to: after the updating unit updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter, Sending a fifth message to the second control node, where the fifth message carries a modified value of the first RAN auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter.

The first control node according to any one of claims 2 to 26, wherein if the first cell and the second cell are both in a long-term evolution LTE standard third generation partnership project 3GPP network The first control node is specifically a first base station, and the second control node is specifically a second base station; if the first cell and the second cell are both in a 3GPP network of a universal mobile communication system UMTS system The first control node is specifically a first radio network controller RNC, and the second control node is specifically a second RNC;

If the first cell is in the LTE standard 3GPP network, the second cell In the network of the UMTS system, the first control node is specifically a first base station, and the second control node is specifically a second RNC;

A second control node, where the second control node includes: a receiving unit and a sending unit;

The second control node according to claim 28, wherein the first message carries a first RAN auxiliary parameter, and the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

The second control node according to claim 28 or 29, wherein the receiving unit is further configured to: after the sending unit sends the second message to the first control node, receive the And a fourth message sent by the control node, where the fourth message carries the updated first RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

The second control node according to claim 30, wherein the second control node further includes an update unit, and the update unit is configured to receive, by the receiving unit, the first control node After the fourth message, the second RAN auxiliary parameter is updated according to the updated first RAN auxiliary parameter.

The second control node according to claim 29, wherein the second control node further includes an update unit, and the receiving unit is configured to send, by the sending unit, a second message to the first After the control node, the fifth message sent by the first control node is received, where the fifth message carries a modified value of the first RAN auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter, where the first RAN auxiliary parameter is The RAN auxiliary parameter of the first cell; the updating unit, configured to update the second RAN auxiliary parameter according to the modified value of the first auxiliary parameter and the suggested modified value of the second RAN auxiliary parameter.

The second control node according to any one of the preceding claims 28-32, wherein, if the first cell and the second cell are both under the 3GPP network of the 3rd Generation Partnership Project of the Long Term Evolution (LTE) standard The first control node is specifically a first base station, and the second control node is specifically a second base station; if the first cell and the second cell are both in a 3GPP network of a universal mobile communication system UMTS system, The first control node is specifically a first radio network controller RNC, and the second control node is specifically a second RNC;

A network mobility optimization system, the system comprising the user terminal UE according to any one of claims 1 to 4, the target control node according to any one of claims 5-13 And a source control node according to any of claims 14-20.

A network mobility optimization system, the system comprising the user terminal UE according to any one of claims 1 to 4, the target control node according to any one of claims 5-13 A source control node according to any one of claims 14-20, and a single wireless controller SR according to claim 21 or 22.

36. A network mobility optimization system, the system comprising the first control node according to any one of claims 23-27, and the method according to any one of claims 28-33 Two control nodes.

37. A method for network mobility optimization, where a user equipment UE is from a source The cell switches to the target cell, and the third generation partner plan is to be performed in the target cell

The 3GPP network traffic is offloaded to the non-3GPP network, and the method includes: the UE acquires an interval length, where the interval duration is a time when the UE switches to the target cell, and the UE is in the a time difference of a time at which the target cell offloads the 3GPP network traffic by using the non-3GPP network;

The UE sends the interval length to the target control node, where the target control node is a control node to which the target cell belongs.

The method according to claim 37, wherein the time at which the UE offloads the 3GPP network traffic by using the non-3GPP network by the target cell includes:

39. The method according to claim 37 or 38, wherein the moment when the UE switches to the target cell includes:

The method according to any one of claims 37 to 39, wherein, if the target cell is in a 3GPP network of a long-term evolution LTE system, the target control node is specifically a target base station;

41. A method for network mobility optimization, in which a user equipment UE handovers from a source cell to a target cell, and offloads 3rd Generation Partnership Project 3GPP network traffic to a non-3GPP network in the target cell, and features The method includes: receiving, by the target control node, an interval length sent by the UE, where the interval time The time difference between the time when the UE is handed over to the target cell and the time when the UE splits the 3GPP network traffic by the non-3GPP network by the target cell, where the target control node is Determining, by the target control node, whether the length of the interval is less than a first preset threshold;

The method according to claim 41, wherein the time at which the UE offloads the 3GPP network traffic by using the non-3GPP network by the target cell includes:

The method according to claim 41 or 42, wherein the moment when the UE switches to the target cell includes:

The method according to any one of claims 41 to 43, wherein after the target control node sends the first indication message to the source control node, the method further includes: the target control node receiving the source control a first message sent by the node, where the first message is used to request a second radio access network RAN auxiliary parameter, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

The method according to claim 44, wherein the first message carries a first RAN auxiliary parameter, and the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

The method according to any one of claims 41 to 45, wherein after the target control node sends the first indication message to the source control node or the SRC, the method further includes:

Receiving, by the target control node, a fourth message sent by the source control node, where the fourth message carries an updated first radio access network RAN auxiliary parameter, where the first RAN auxiliary parameter is the RAN of the source cell Auxiliary parameters.

The method according to claim 46, after the target control node receives the fourth message sent by the source control node, the method further includes:

The method according to any one of claims 41 to 45, further comprising: after the target control node sends the first indication message to the source control node or the S RC, the method further includes:

The method according to any one of claims 41 to 48, wherein, if the source cell and the target cell are both in a 3GPP network of a long term evolution LTE system, the source control node is specifically a source. a base station, the target control node is specifically a target base station; if the source cell and the target cell are both in a 3GPP network of a universal mobile communication system UMTS system, the source control node is specifically a source radio network controller RNC, The target control node is specifically a target RNC;

If the source cell is in the LTE standard 3GPP network, the target cell is in In the network of the UMTS system, the source control node is specifically a source base station, and the target control node is specifically a target RNC;

If the source cell is in the 3GPP network of the UMTS system, the target cell is in the LTE system, the source control node is specifically a source RNC, and the target control node is a target base station.

a method for network mobility optimization, in which the user equipment UE switches from a source cell to a target cell, and offloads 3rd Generation Partnership Project 3GPP network traffic to the non-3GPP network in the target cell, The method includes: the source control node receives the first indication message sent by the target control node, where the first indication message is used to indicate that the UE has performed an unnecessary handover, where the source control node is a control node to which the source cell belongs, where the target control node is a control node to which the target cell belongs;

If the number of times the UE has received the unnecessary handover is greater than the second preset threshold, the source control node modifies the handover target selection policy, or the source control node updates the first The RAN auxiliary parameter of the radio access network, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the source cell.

The method according to claim 50, wherein before the source control node updates the first RAN auxiliary parameter, the method further includes:

The source control node sends a first message to the target control node, where the first message is used to request a second RAN auxiliary parameter, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the target cell;

The source control node receives a second message sent by the target control node, where the second message carries the second RAN auxiliary parameter;

The source control node updates the first RAN auxiliary parameter, including:

52. The method according to claim 51, wherein the first message carries the first RAN auxiliary parameter.

The method according to claim 50, wherein before the source control node updates the first RAN auxiliary parameter, the method further includes: Receiving, by the source control node, a third message sent by a single radio controller S RC, where the third message carries an updated value of the first RAN auxiliary parameter;

The source control node updates the first RAN auxiliary parameter, including:

The source control node updates the first RAN auxiliary parameter according to an updated value of the first RAN auxiliary parameter.

The method according to any one of claims 50 to 5, wherein after the source control node updates the first RAN auxiliary parameter, the method further includes:

The source control node sends a fifth message to the target control node, where the fifth message carries a modified value of the first RAN auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter.

The method according to any one of claims 50 to 55, wherein, if the source cell and the target cell are both in a 3GPP network of a long term evolution LTE system, the source control node is specifically a source. a base station, the target control node is specifically a target base station; if the source cell and the target cell are both in a 3GPP network of a universal mobile communication system UMTS system, the source control node is specifically a source radio network controller RNC, The target control node is specifically a target RNC;

If the source cell is in the LTE system of the 3GPP network, the target cell is in the UMTS system, the source control node is specifically a source base station, and the target control node is specifically a target RNC;

57. A method for network mobility optimization, in which a user equipment UE switches from a source cell to a target cell, and offloads 3rd Generation Partnership Project 3GPP network traffic to a non-3GPP network in the target cell, The method includes: the single wireless controller S RC receiving the first indication message sent by the target control node, The first indication message is used to indicate that the UE has an unnecessary handover, where the target control node is a control node to which the target cell belongs;

The method according to claim 57, wherein, if the source cell and the target cell are both in a 3GPP network of a long term evolution LTE system, the source control node is specifically a source base station, and the target control The node is specifically a target base station;

A method for network mobility optimization, the method includes: the first control node sends a first message to a second control node, where the first message is used to request the second radio access network RAN to assist a parameter, the first control node is a control node to which the first cell belongs, the second control node is a control node to which the second cell belongs, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the second cell;

Receiving, by the first control node, a second message sent by the second control node, where the second message carries the second R A N auxiliary parameter;

And the first control node updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

The method according to claim 59, wherein the first message carries the first RAN auxiliary parameter.

The method according to claim 59 or 60, wherein after the first control node updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter, the method further includes:

The method according to claim 59 or 60, wherein, after the first control node updates the first RAN auxiliary parameter according to the second RAN auxiliary parameter, the method further includes:

The first control node sends a fifth message to the second control node, where the fifth message carries a modified value of the first RAN auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter.

The method according to any one of claims 59-62, wherein, if the first cell and the second cell are both under the 3GPP network of the 3rd Generation Partnership Project of the Long Term Evolution LTE system, The first control node is specifically a first base station, and the second control node is specifically a second base station;

If the first cell and the second cell are both in the 3GPP network of the universal mobile communication system UMTS, the first control node is specifically the first radio network controller RNC, and the second control node is specifically Second RNC ;

If the first cell is in the 3GPP network of the LTE system, and the second cell is in the network of the UMTS system, the first control node is specifically a first base station, and the second control node is specifically Second RNC ;

64. A method for network mobility optimization, the method comprising: receiving, by a second control node, a first message sent by a first control node, where the first message is used to request a second radio access network RAN The auxiliary parameter, the first control node is a control node to which the first cell belongs, the second control node is a control node to which the second cell belongs, and the second RAN auxiliary parameter is a RAN auxiliary parameter of the second cell. The second control node sends a second message to the first control node, where the The second message carries the second RAN auxiliary parameter.

The method according to claim 64, wherein the first message carries a first RAN auxiliary parameter, and the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

The method according to claim 64 or 65, after the second control node sends the second message to the first control node, the method further includes: the second control node receiving the And a fourth message sent by the control node, where the fourth message carries the updated first RAN auxiliary parameter, where the first RAN auxiliary parameter is a RAN auxiliary parameter of the first cell.

67. The method according to claim 66, after the receiving, by the second control node, the fourth message sent by the first control node, the method further includes:

The method according to claim 64 or 65, after the second control node sends the second message to the first control node, the method further includes: the second control node receiving the a fifth message sent by the control node, where the fifth message carries a modified value of the first RAN auxiliary parameter and a suggested modified value of the second RAN auxiliary parameter, where the first RAN auxiliary parameter is the RAN assist of the first cell Parameter

The method according to any one of claims 64-68, wherein, if the first cell and the second cell are both under the 3GPP network of the Long Term Evolution (LTE) standard, The first control node is specifically a first base station, and the second control node is specifically a second base station;

If the first cell is in the 3GPP network of the LTE system, and the second cell is in the network of the UMTS system, the first control node is specifically a first base station, where The second control node is specifically a second RNC;