CN113133066A - Switching method and network equipment - Google Patents
Switching method and network equipment Download PDFInfo
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- CN113133066A CN113133066A CN201911410725.7A CN201911410725A CN113133066A CN 113133066 A CN113133066 A CN 113133066A CN 201911410725 A CN201911410725 A CN 201911410725A CN 113133066 A CN113133066 A CN 113133066A
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- 238000005259 measurement Methods 0.000 description 11
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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Abstract
The invention provides a switching method and network equipment, wherein the switching method comprises the following steps: sending a switching request message to target network equipment, and receiving indication information sent by the target network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for a terminal. The target network equipment sends the indication information to the source network equipment, so that the source network equipment can select the target network equipment for switching for the terminal according to the indication information, and the target network equipment with double connection configured for the terminal can be preferentially selected, so that the access performance of the terminal is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a handover method and a network device.
Background
For a terminal supporting dual connectivity, the terminal may reside in an evolved Node B (eNB) supporting a Non-independent network architecture (NSA) as much as possible to perform uplink service or downlink service, which may fully utilize network resources on one hand and improve user experience on the other hand.
Currently, three scenarios are mainly defined for handover under the NSA architecture:
scene one: the master node of the eNB switches and simultaneously carries the gNB auxiliary node (the gNB can be replaced or not replaced);
scene two: the eNB switches to the eNB to which the gNB auxiliary node is added;
scene three: the eNB with the added gNB secondary node switches to a single gNB without the added gNB as a secondary node.
In the switching process established in the three scenarios, the source base station does not know whether the target base station adds the auxiliary base station or the auxiliary cell to the terminal, so that the auxiliary base station or the auxiliary cell selected by the source base station for the terminal does not support dual connectivity, and the access performance of the terminal is affected.
Disclosure of Invention
The embodiment of the invention provides a switching method and network equipment, and aims to solve the problem that a source base station cannot know whether a target base station adds an auxiliary base station or an auxiliary cell to a terminal, so that the auxiliary base station or the auxiliary cell selected by the source base station as the terminal does not support dual connection and the access performance of the terminal is influenced.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a handover method, which is applicable to a source network device, where the handover method includes:
sending a switching request message to target network equipment;
receiving indication information sent by target network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for a terminal.
In a second aspect, an embodiment of the present invention provides a handover method, which is applicable to a target network device, where the handover method includes:
receiving a switching request message sent by source network equipment;
and sending indication information to the source network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal.
In a third aspect, an embodiment of the present invention provides a network device, where the network device is a source network device, and includes a processor and a transceiver;
the transceiver is used for sending a switching request message to target network equipment; receiving indication information sent by target network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for a terminal.
In a fourth aspect, an embodiment of the present invention provides a network device, where the network device is a target network device, and includes a processor and a transceiver;
the transceiver is configured to receive a handover request message sent by a source network device, and send indication information to the source network device, where the indication information indicates whether the target network device adds an auxiliary base station or an auxiliary cell to a terminal.
In a fifth aspect, an embodiment of the present invention provides a network device, where the network device is a source network device, and the network device includes:
a sending module, configured to send a handover request message to a target network device;
the receiving module is used for receiving indication information sent by target network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for a terminal.
In a sixth aspect, an embodiment of the present invention provides a network device, where the network device is a target network device, and the network device includes:
a receiving module, configured to receive a handover request message sent by a source network device;
a sending module, configured to send indication information to the source network device, where the indication information indicates whether the target network device adds an auxiliary base station or an auxiliary cell to a terminal.
In a seventh aspect, an embodiment of the present invention provides a network device, including a processor, a memory, and a computer program stored on the memory and being executable on the processor, where the computer program, when executed by the processor, implements the steps in the handover method according to the first aspect, or the computer program, when executed by the processor, implements the steps in the handover method according to the second aspect.
In an eighth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the handover method according to the first aspect, or the computer program, when executed by the processor, implements the steps in the handover method according to the second aspect.
In the embodiment of the invention, the source network equipment sends the switching request message to the target network equipment and receives the indication information sent by the target network equipment, wherein the indication information indicates whether the target network equipment adds the auxiliary base station or the auxiliary cell for the terminal. The target network equipment sends the indication information to the source network equipment, so that the source network equipment can select the target network equipment for switching for the terminal according to the indication information, and the target network equipment with double connection configured for the terminal can be preferentially selected, so that the access performance of the terminal is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1a is a flowchart of a handover method according to an embodiment of the present invention;
fig. 1b is a second flowchart of a handover method according to an embodiment of the present invention;
fig. 2 is a third flowchart of a handover method according to an embodiment of the present invention;
fig. 3 is a diagram of a network device structure according to an embodiment of the present invention;
fig. 4 is a second block diagram of a network device according to an embodiment of the present invention;
fig. 5 is a third block diagram of a network device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1a, fig. 1a is a flowchart of a handover method provided in an embodiment of the present invention, which is applied to a source network device, and as shown in fig. 1a, the method includes the following steps:
Specifically, when the source network device sends an HO request message to the target network device, the source network device may carry a cell identifier and a measurement result in the HO request message.
After receiving the HO request message, the target network equipment determines whether the target network equipment indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal according to whether the target network equipment has the capability of adding the auxiliary node or the auxiliary cell and whether the auxiliary node or the auxiliary cell is successfully added. The indication information may be an HO command message, and may indicate whether the target network device adds a secondary base station or a secondary cell to the terminal by whether configuration information of the secondary node or the secondary cell is included in the HO command message.
In this embodiment, a source network device sends a handover request message to a target network device, and receives indication information sent by the target network device, where the indication information indicates whether the target network device adds an auxiliary base station or an auxiliary cell to a terminal. The target network equipment sends the indication information to the source network equipment, so that the source network equipment can select the target network equipment for switching for the terminal according to the indication information, and the target network equipment with double connection configured for the terminal can be preferentially selected, so that the access performance of the terminal is improved.
The following describes a handover method provided in the present application by referring to more detailed examples.
Referring to fig. 1b, fig. 1b is a flowchart of a handover method provided in an embodiment of the present invention, which is applied to a source network device, and as shown in fig. 1b, the method includes the following steps:
The terminal reports the measurement result to the source base station according to the measurement configuration of the source base station (i.e., the source network device), and the measurement result includes an eNB measurement result and a gNB measurement result.
And the source network equipment selects target network equipment for the terminal according to the measurement result sent by the terminal. The target network device may be one or more.
When the source network device sends an HO request (handover request) message to the target network device, the HO request message may carry a cell identifier and a measurement result. This step corresponds to step 11.
After receiving the HO request message, the target network equipment determines whether the target network equipment indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal according to whether the target network equipment has the capability of adding the auxiliary node or the auxiliary cell and whether the auxiliary node or the auxiliary cell is successfully added. The indication information may be an HO command message, and may indicate whether the target network device adds a secondary base station or a secondary cell to the terminal by whether configuration information of the secondary node or the secondary cell is included in the HO command message.
In this step, after receiving the indication information sent by the target network device, the source network device may determine, according to the indication information, whether the target network device adds an auxiliary base station or an auxiliary cell to the terminal, and specifically, may determine, according to the indication information sent by the target network device for the HO request message. For example, if the target network device includes the configuration information of the secondary node or the secondary cell in the HO command message returned to the source base station, the source network device may determine that the target network device has added the secondary node or the secondary cell to the terminal according to the received HO command message. If the target network device does not include the configuration information of the auxiliary node or the auxiliary cell in the HO command message replied to the source base station, the source network device may determine that the target network device does not add the auxiliary node or the auxiliary cell to the terminal according to the received HO command message.
And 104, selecting target network equipment for switching for the terminal according to the indication information.
Specifically, when selecting a target network device for handover for the terminal, the target network device may be selected for handover from the target network device according to a network device selection policy, where the network device selection policy is at least related to whether the target network device adds an auxiliary base station or an auxiliary cell to the terminal.
The network device selection policy may be at least one of the following policies:
preferentially selecting a second network device as the target network device for handover relative to a first network device; and the combination of (a) and (b),
selecting the target network equipment for switching from second network equipment;
the first network device is a network device which does not add an auxiliary base station or an auxiliary cell to the terminal in the target network device; and the second network equipment is the network equipment which adds an auxiliary base station or an auxiliary cell to the terminal in the target network equipment.
Specifically, the target network device is divided into a first network device and a second network device according to whether an auxiliary base station or an auxiliary cell is added to the terminal, the first network device is a network device to which the auxiliary base station or the auxiliary cell is not added to the terminal, and the second network device is a network device to which the auxiliary base station or the auxiliary cell is added to the terminal.
In the two network device selection policies, for a first selection policy: and selecting the second network device with higher priority as the target network device relative to the first network device in the target network device. That is, when selecting according to the network device selection policy, selecting a network device with a higher priority in the target network device, so that when the target network device has a network device that has added an auxiliary base station or an auxiliary cell for the terminal, and under the same other conditions, the source network device preferentially selects the network device that has added the auxiliary base station or the auxiliary cell for the terminal as the target network device, and ensures that the target network device supports dual connectivity, thereby improving the terminal access performance.
Under this policy, the second network device has a relatively high priority, and due to the influence of other parameters, even if the second network device exists in the target network device, the second network device is not necessarily selected as the target network device.
For the second selection strategy: and selecting the target network equipment for the terminal from second network equipment. That is to say, when there is a network device that has added an auxiliary base station or an auxiliary cell for the terminal in the target network device, the target network device directly selects the target network device from the second network devices that have added an auxiliary base station or an auxiliary cell for the terminal, and it is ensured that the target network device supports dual connectivity, so as to improve the terminal access performance.
Under such a policy, the second network device has the highest priority, and as long as the second network device exists in the target network devices, the second network device is necessarily selected as the target network device.
In this embodiment, a target network device is selected according to a measurement result sent by a terminal supporting dual connectivity; sending a switching request message to target network equipment; receiving indication information sent by target network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for a terminal; and selecting target network equipment for switching for the terminal according to the indication information. In this way, when determining the target network device used for switching by the terminal, the source network device considers whether the target network device configures dual connectivity for the terminal, so that the target network device configured with dual connectivity for the terminal can be preferentially selected to improve the access performance of the terminal.
The indication information is configuration information of an auxiliary base station or an auxiliary cell in a handover command message, or the indication information is first information or second information in a handover request confirmation message, the first information is used for indicating whether the auxiliary base station or the auxiliary cell has been added to the terminal, and the second information is used for indicating identification information of the auxiliary base station or the auxiliary cell that has been added to the terminal.
That is, determining whether the target network device adds a secondary base station or a secondary cell to the terminal according to the indication information includes:
determining whether the target network equipment adds an auxiliary base station or an auxiliary cell to the terminal according to a switching command message sent by the target network equipment;
alternatively, the first and second electrodes may be,
and determining whether the target network equipment adds an auxiliary base station or an auxiliary cell to the terminal or not according to the switching request confirmation message sent by the target network equipment.
In the application, the target network device determines whether the target network device adds an auxiliary base station or an auxiliary cell to the terminal in two ways. The first mode is as follows: and determining whether the target network equipment adds an auxiliary base station or an auxiliary cell to the terminal according to the HO command message sent by the target network equipment. The second way is: and determining whether the target network equipment adds an auxiliary base station or an auxiliary cell to the terminal according to the HO Reuqest Ack (handover request acknowledgement) message sent by the target network equipment.
At present, whether the target network device adds the auxiliary base station or the auxiliary cell configuration information to the terminal is only transmitted in the HO command message sent by the target network device to the source base station and is not transmitted on an interface between base stations, that is, when the target network device sends the HO command to the terminal, the HO command is transmitted to the terminal through the source base station, and the source base station does not know whether the target network device adds the auxiliary base station or the auxiliary cell to the terminal.
In the first method, the source network device opens the received HO command message, and checks whether the HO command message includes the configuration information of the secondary base station or the secondary cell, thereby determining whether the target network device has added the secondary base station or the secondary cell to the terminal. If the HO command message comprises the configuration information of the auxiliary base station or the auxiliary cell, determining that the target network equipment adds the auxiliary base station or the auxiliary cell to the terminal; and if the HO command message does not include the configuration information of the auxiliary base station or the auxiliary cell, determining that the target network equipment does not add the auxiliary base station or the auxiliary cell for the terminal.
In the second way, the target network device includes, in an HO request Ack (handover request acknowledge) message, indication information that a secondary base station or a secondary cell has been added for the terminal. And the source network equipment determines whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal according to the indication information in the switching request confirmation message sent by the target network equipment.
Specifically, the source network device determines whether the target network device adds an auxiliary base station or an auxiliary cell to the terminal according to at least one of the following information included in the handover request acknowledgement message:
first information for indicating whether an auxiliary base station or an auxiliary cell has been added to the terminal;
and the second information is used for indicating the identification information of the secondary base station or the secondary cell added for the terminal.
The first information may include 1 bit (bit), a value of 1 indicates that the target network device has added an auxiliary base station or an auxiliary cell to the terminal, and a value of 0 indicates that the auxiliary base station or the auxiliary cell is not added to the terminal.
And the second information is used for indicating the identification information of the secondary base station or the secondary cell added for the terminal. If the second information comprises identification information of the auxiliary base station or the auxiliary cell, indicating that the target network equipment adds the auxiliary base station or the auxiliary cell for the terminal; and if the second information does not include the identification information of the auxiliary base station or the auxiliary cell, indicating that the target network equipment does not add the auxiliary base station or the auxiliary cell to the terminal.
Wherein the first information is described by a newly added field of the handover request acknowledge message or by a terminal context retention indication bit in a terminal context retention indication information element.
For example, a value of "true" indicates that the target network device has an added secondary base station or a secondary cell and reserves an original secondary base station or an original secondary cell, through an indication of a UE context key indicator; if the value is false, indicating that the target network equipment has added the auxiliary base station or the auxiliary cell but not the original auxiliary base station or the original auxiliary cell, and if the value does not carry the keep gNB indication IE, indicating that the auxiliary base station or the auxiliary cell has been successfully added; the Information Element (IE) refers to an Information Element in a signaling message.
Or, through a keep gNB indication bit indication, a value of 1 indicates that the target network device has added an auxiliary base station or an auxiliary cell, and the original auxiliary base station or the original auxiliary cell is reserved; and if the value is 0, the target network equipment does not add the auxiliary base station or the auxiliary cell, and if the keep gNB indication IE is not carried, the target network equipment indicates that the auxiliary base station or the auxiliary cell is added but not the original auxiliary base station or the original auxiliary cell.
In the second way, the target network device may indicate whether the secondary base station or the secondary cell has been added to the terminal through whether the HO command message includes the configuration information of the secondary base station or the secondary cell, in addition to indicating whether the secondary base station or the secondary cell has been added to the terminal through the handover request confirm message.
In this case, the source network device determines whether the target network device has added the secondary base station or the secondary cell for the terminal by opening and checking the received HO command message (i.e., determining in the first manner).
Referring to fig. 2, fig. 2 is another flowchart of a handover method provided in an embodiment of the present invention, and is applied to a target network device, as shown in fig. 2, the method includes the following steps:
When the source network device sends a handover request message (i.e., an HO request message) to the target network device, the cell identifier and the measurement result may be carried in the HO request message. After receiving the HO request message, the target network equipment determines whether the HO command message replied to the source base station includes the configuration information of the auxiliary node or the auxiliary cell according to whether the target network equipment has the capability of adding the auxiliary node or the auxiliary cell and whether the auxiliary node or the auxiliary cell is successfully added.
The target network equipment determines whether the indication information sent to the source network equipment comprises information of adding an auxiliary node or an auxiliary cell for the terminal or not according to whether the target network equipment has the capability of adding the auxiliary node or the auxiliary cell or not and whether the auxiliary node or the auxiliary cell is successfully added or not, so that the source network equipment can determine whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal or not according to the indication information, the source network equipment can select and configure double-connection target network equipment for the terminal preferentially, and the access performance of the terminal is improved.
In this embodiment, a handover request message sent by a source network device is received; and sending indication information to the source network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal. The source network equipment can determine whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal according to the received indication information, so that the source network equipment can preferentially select the target network equipment configured with double connections for the terminal when selecting the target network equipment for the terminal, and the access performance of the terminal is improved.
The indication information is configuration information of an auxiliary base station or an auxiliary cell in a handover command message, or the indication information is first information or second information in a handover request confirmation message, the first information is used for indicating whether the auxiliary base station or the auxiliary cell has been added to the terminal, and the second information is used for indicating identification information of the auxiliary base station or the auxiliary cell that has been added to the terminal.
That is, the indication information may be transmitted through an HO command message, and whether the target network device adds the configuration information of the secondary base station or the secondary cell to the terminal is transmitted in the HO command message sent by the target network device to the source base station. The source network device may determine whether the target network device adds a secondary base station or a secondary cell to the terminal according to the HO command message.
If the target network device includes the configuration information of the auxiliary node or the auxiliary cell in the HO command message replied to the source base station, the source network device may determine that the target network device has added the auxiliary node or the auxiliary cell for the terminal according to the received HO command message. If the target network device does not include the configuration information of the auxiliary node or the auxiliary cell in the HO command message replied to the source base station, the source network device may determine that the target network device does not add the auxiliary node or the auxiliary cell to the terminal according to the received HO command message.
The indication information may also be transmitted through a handover request acknowledgement message, where the handover request acknowledgement message includes at least one of the following information indicating whether to add a secondary base station or a secondary cell to the terminal:
first information for indicating whether an auxiliary base station or an auxiliary cell has been added to the terminal;
and the second information is used for indicating the identification information of the secondary base station or the secondary cell added for the terminal.
The first information may include 1 bit (bit), a value of 1 indicates that the target network device has added an auxiliary base station or an auxiliary cell to the terminal, and a value of 0 indicates that the auxiliary base station or the auxiliary cell is not added to the terminal.
And the second information is used for indicating the identification information of the secondary base station or the secondary cell added for the terminal. If the second information comprises identification information of the auxiliary base station or the auxiliary cell, indicating that the target network equipment adds the auxiliary base station or the auxiliary cell for the terminal; and if the second information does not include the identification information of the auxiliary base station or the auxiliary cell, indicating that the target network equipment does not add the auxiliary base station or the auxiliary cell to the terminal.
Wherein the first information is described by a newly added field of the handover request acknowledge message or by a terminal context retention indication bit in a terminal context retention indication information element.
For example, a value of "true" indicates that the target network device has an added secondary base station or a secondary cell and reserves an original secondary base station or an original secondary cell, through an indication of a UE context key indicator; if the value is false, indicating that the target network equipment has added the auxiliary base station or the auxiliary cell but not the original auxiliary base station or the original auxiliary cell, and if the value does not carry the keep gNB indication IE, indicating that the auxiliary base station or the auxiliary cell has been successfully added; the Information Element (IE) refers to an Information Element in a signaling message.
Or, through a keep gNB indication bit indication, a value of 1 indicates that the target network device has added an auxiliary base station or an auxiliary cell, and the original auxiliary base station or the original auxiliary cell is reserved; and if the value is 0, the target network equipment does not add the auxiliary base station or the auxiliary cell, and if the keep gNB indication IE is not carried, the target network equipment indicates that the auxiliary base station or the auxiliary cell is added but not the original auxiliary base station or the original auxiliary cell.
The target network device may indicate whether the secondary base station or the secondary cell has been added to the terminal through whether the HO command message includes the configuration information of the secondary base station or the secondary cell, in addition to indicating whether the secondary base station or the secondary cell has been added to the terminal through the handover request confirm message. That is, the indication information may be transmitted through the HO command message and the handover request confirmation message at the same time, so that the source network device may determine whether the target network device has added the secondary base station or the secondary cell for the terminal through the HO command message, or may determine whether the target network device has added the secondary base station or the secondary cell for the terminal through the handover request confirmation message.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 3, a first network device 300 is a source network device, and includes:
a sending module 301, configured to send a handover request message to a target network device;
a receiving module 302, configured to receive indication information sent by a target network device, where the indication information indicates whether the target network device adds an auxiliary base station or an auxiliary cell to a terminal.
Wherein, the first network device 300 further includes: and the selection module is used for selecting target network equipment for switching for the terminal according to the indication information.
Wherein the selection module is configured to:
preferentially selecting a second network device as the target network device for handover relative to a first network device;
and the combination of (a) and (b),
selecting the target network equipment for switching from second network equipment;
the first network equipment is network equipment which does not add an auxiliary base station or an auxiliary cell to the terminal in the target network equipment; and the second network equipment is the network equipment which adds an auxiliary base station or an auxiliary cell to the terminal in the target network equipment.
The indication information is configuration information of an auxiliary base station or an auxiliary cell in a handover command message, or the indication information is first information or second information in a handover request confirmation message, the first information is used for indicating whether the auxiliary base station or the auxiliary cell has been added to the terminal, and the second information is used for indicating identification information of the auxiliary base station or the auxiliary cell that has been added to the terminal.
Wherein the first information is described by a newly added field of the handover request acknowledge message or by a terminal context retention indication bit in a terminal context retention indication information element.
The first network device 300 can implement each process implemented by the source network device in the method embodiment shown in fig. 1, and is not described here again to avoid repetition.
In the first network device 300 of the embodiment of the present invention, the source network device sends a handover request message to the target network device, and receives indication information sent by the target network device, where the indication information indicates whether the target network device is a terminal added with an auxiliary base station or an auxiliary cell. The target network equipment sends the indication information to the source network equipment, so that the source network equipment can select the target network equipment for switching for the terminal according to the indication information, and the target network equipment with double connection configured for the terminal can be preferentially selected, so that the access performance of the terminal is improved.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 4, a second network device 400 is a target network device and includes:
a receiving module 401, configured to receive a handover request message sent by a source network device;
a sending module 402, configured to send indication information to the source network device, where the indication information indicates whether the target network device adds an auxiliary base station or an auxiliary cell to a terminal.
The indication information is configuration information of an auxiliary base station or an auxiliary cell in a handover command message, or the indication information is first information or second information in a handover request confirmation message, the first information is used for indicating whether the auxiliary base station or the auxiliary cell has been added to the terminal, and the second information is used for indicating identification information of the auxiliary base station or the auxiliary cell that has been added to the terminal.
Wherein the first information is described by a newly added field of the handover request acknowledge message or by a terminal context retention indication bit in a terminal context retention indication information element.
The second network device 400 can implement each process implemented by the target network device in the method embodiment shown in fig. 2, and is not described here again to avoid repetition.
The second network device 400 of the embodiment of the present invention receives a handover request message sent by a source network device; and sending indication information to the source network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal. The source network equipment can determine whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal according to the received indication information, so that the source network equipment can preferentially select the target network equipment configured with double connections for the terminal when selecting the target network equipment for the terminal, and the access performance of the terminal is improved.
Referring to fig. 5, an embodiment of the present invention further provides a network device, which includes a bus 501, a transceiver 502, an antenna 503, a bus interface 504, a processor 505, and a memory 506.
In one case, the transceiver 502 is configured to send a handover request message to a target network device; receiving indication information sent by target network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for a terminal.
The processor 505 is configured to select a target network device for handover for the terminal according to the indication information.
Wherein the processor 505 is configured to:
preferentially selecting a second network device as the target network device for handover relative to a first network device;
and the combination of (a) and (b),
selecting the target network equipment for switching from second network equipment;
the first network equipment is network equipment which does not add an auxiliary base station or an auxiliary cell to the terminal in the target network equipment; and the second network equipment is the network equipment which adds an auxiliary base station or an auxiliary cell to the terminal in the target network equipment.
The indication information is configuration information of an auxiliary base station or an auxiliary cell in a handover command message, or the indication information is first information or second information in a handover request confirmation message, the first information is used for indicating whether the auxiliary base station or the auxiliary cell has been added to the terminal, and the second information is used for indicating identification information of the auxiliary base station or the auxiliary cell that has been added to the terminal.
Wherein the first information is described by a newly added field of the handover request acknowledge message or by a terminal context retention indication bit in a terminal context retention indication information element.
The network device can implement each process implemented by the source network device in the method embodiment shown in fig. 1, and is not described here again to avoid repetition.
In the embodiment of the invention, the source network equipment sends the switching request message to the target network equipment and receives the indication information sent by the target network equipment, wherein the indication information indicates whether the target network equipment adds the auxiliary base station or the auxiliary cell for the terminal. The target network equipment sends the indication information to the source network equipment, so that the source network equipment can select the target network equipment for switching for the terminal according to the indication information, and the target network equipment with double connection configured for the terminal can be preferentially selected, so that the access performance of the terminal is improved.
In another case, the transceiver 502 is configured to receive a handover request message sent by a source network device; and sending indication information to the source network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal.
The indication information is configuration information of an auxiliary base station or an auxiliary cell in a handover command message, or the indication information is first information or second information in a handover request confirmation message, the first information is used for indicating whether the auxiliary base station or the auxiliary cell has been added to the terminal, and the second information is used for indicating identification information of the auxiliary base station or the auxiliary cell that has been added to the terminal.
Wherein the first information is described by a newly added field of the handover request acknowledge message or by a terminal context retention indication bit in a terminal context retention indication information element.
The network device can implement each process implemented by the target network device in the method embodiment shown in fig. 2, and is not described here again to avoid repetition.
In this embodiment, a handover request message sent by a source network device is received; and sending indication information to the source network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal. The source network equipment can determine whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal according to the received indication information, so that the source network equipment can preferentially select the target network equipment configured with double connections for the terminal when selecting the target network equipment for the terminal, and the access performance of the terminal is improved.
In fig. 5, a bus architecture (represented by bus 501), bus 501 may include any number of interconnected buses and bridges, with bus 501 linking various circuits including one or more processors, represented by processor 505, and memory, represented by memory 506. The bus 501 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 504 provides an interface between the bus 501 and the transceiver 502. The transceiver 502 may be one element or may be multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 505 is transmitted over a wireless medium via the antenna 503, and further, the antenna 503 receives the data and transmits the data to the processor 505.
The processor 505 is responsible for managing the bus 501 and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And the memory 506 may be used to store data used by the processor 505 in performing operations.
Alternatively, the processor 505 may be a CPU, ASIC, FPGA or CPLD.
Preferably, an embodiment of the present invention further provides a network device, including a processor 505, a memory 506, and a computer program stored in the memory 506 and capable of running on the processor 505, where the computer program is executed by the processor 505 to implement each process of the foregoing switching method embodiment shown in fig. 1, or the computer program is executed by the processor 505 to implement each process of the foregoing switching method embodiment shown in fig. 2, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the handover method embodiment shown in fig. 1, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the switching method embodiment shown in fig. 2, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The computer readable storage medium is, for example, ROM, RAM, magnetic disk or optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (20)
1. A switching method is applicable to a source network device, and is characterized in that the switching method comprises the following steps:
sending a switching request message to target network equipment;
receiving indication information sent by target network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for a terminal.
2. The handover method according to claim 1, wherein after receiving the indication information sent by the target network device, the method further comprises:
and selecting target network equipment for switching for the terminal according to the indication information.
3. The handover method according to claim 2, wherein the selecting, according to the indication information, a target network device for handover for the terminal specifically includes:
preferentially selecting a second network device as the target network device for handover relative to a first network device;
and the combination of (a) and (b),
selecting the target network equipment for switching from second network equipment;
the first network equipment is network equipment which does not add an auxiliary base station or an auxiliary cell to the terminal in the target network equipment; and the second network equipment is the network equipment which adds an auxiliary base station or an auxiliary cell to the terminal in the target network equipment.
4. The handover method according to claim 1, wherein:
the indication information is configuration information of an auxiliary base station or an auxiliary cell in a handover command message, or the indication information is first information or second information in a handover request confirmation message, the first information is used for indicating whether the auxiliary base station or the auxiliary cell is added to the terminal, and the second information is used for indicating identification information of the auxiliary base station or the auxiliary cell added to the terminal.
5. The handover method according to claim 4, wherein the first information is described by a newly added field of the handover request acknowledge message or by a terminal context retention indication bit in a terminal context retention indication information element.
6. A handover method applicable to a target network device is characterized in that the handover method comprises the following steps:
receiving a switching request message sent by source network equipment;
and sending indication information to the source network equipment, wherein the indication information indicates whether the target network equipment adds an auxiliary base station or an auxiliary cell for the terminal.
7. The handover method according to claim 6, wherein: the indication information is configuration information of an auxiliary base station or an auxiliary cell in a handover command message, or the indication information is first information or second information in a handover request confirmation message, the first information is used for indicating whether the auxiliary base station or the auxiliary cell is added to the terminal, and the second information is used for indicating identification information of the auxiliary base station or the auxiliary cell added to the terminal.
8. The handover method according to claim 7, wherein the first information is described by a newly added field of the handover request acknowledge message or by a terminal context retention indication bit in a terminal context retention indication information element.
9. A network device, the network device being a source network device, comprising a processor and a transceiver;
the transceiver is configured to send a handover request message to a target network device, and receive indication information sent by the target network device, where the indication information indicates whether the target network device adds an auxiliary base station or an auxiliary cell to a terminal.
10. The network device of claim 9, wherein the processor is configured to:
and selecting target network equipment for switching for the terminal according to the indication information.
11. The network device of claim 10, wherein the processor is configured to:
preferentially selecting a second network device as the target network device for handover relative to a first network device;
and the combination of (a) and (b),
selecting the target network equipment for switching from second network equipment;
the first network equipment is network equipment which does not add an auxiliary base station or an auxiliary cell to the terminal in the target network equipment; and the second network equipment is the network equipment which adds an auxiliary base station or an auxiliary cell to the terminal in the target network equipment.
12. The network device according to claim 9, wherein the indication information is configuration information of a secondary base station or a secondary cell in a handover command message, or the indication information is first information or second information in a handover request acknowledgement message, the first information is used to indicate whether a secondary base station or a secondary cell has been added to the terminal, and the second information is used to indicate identification information of a secondary base station or a secondary cell that has been added to the terminal.
13. The network device according to claim 12, wherein the first information is described by a newly added field of the handover request confirm message or by a terminal context retention indication bit in a terminal context retention indication information element.
14. A network device, the network device being a target network device, comprising a processor and a transceiver;
the transceiver is configured to receive a handover request message sent by a source network device, and send indication information to the source network device, where the indication information indicates whether the target network device adds an auxiliary base station or an auxiliary cell to a terminal.
15. The network device according to claim 14, wherein the indication information is configuration information of a secondary base station or a secondary cell in a handover command message, or the indication information is first information or second information in a handover request acknowledgement message, the first information is used to indicate whether a secondary base station or a secondary cell has been added to the terminal, and the second information is used to indicate identification information of a secondary base station or a secondary cell that has been added to the terminal.
16. The network device according to claim 15, wherein the first information is described by a newly added field of the handover request confirm message or by a terminal context retention indication bit in a terminal context retention indication information element.
17. A network device, the network device being a source network device, the network device comprising:
a sending module, configured to send a handover request message to a target network device;
the device comprises a receiving module for receiving indication information sent by a target network device, wherein the indication information indicates whether the target network device adds an auxiliary base station or an auxiliary cell for a terminal.
18. A network device, the network device being a target network device, the network device comprising:
a receiving module, configured to receive a handover request message sent by a source network device;
a sending module, configured to send indication information to the source network device, where the indication information indicates whether the target network device adds an auxiliary base station or an auxiliary cell to a terminal.
19. A network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps in the handover method according to any one of claims 1 to 5 or the computer program when executed by the processor implementing the steps in the handover method according to any one of claims 6 to 8.
20. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps in the handover method according to one of the claims 1 to 5, or which computer program, when being executed by the processor, carries out the steps in the handover method according to one of the claims 6 to 8.
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| CN201911410725.7A CN113133066A (en) | 2019-12-31 | 2019-12-31 | Switching method and network equipment |
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