CN112042226B - Handover method, device and storage medium of base station - Google Patents

Abstract

The embodiment of the application provides a method, equipment and a storage medium for switching base stations, in the method, UE receives a switching command sent by a source base station accessed currently, the switching command comprises information used for indicating a first target base station, then whether the source base station meets a first condition is detected, if yes, connection is established with the first target base station, the first condition is a condition used for judging service quality of the source base station, when the source base station meets the switching condition, the source base station is directly switched to the target base station, switching is not needed to be carried out until the target base station meets a configured condition, and the problems of connection interruption and the like caused by poor channel quality of the source base station are avoided.

Description

Handover method, device and storage medium of base station

technical field

The embodiments of the present application relate to communication technologies, and in particular, to a method, device, and storage medium for handover of a base station.

Background technique

In the 3rd Generation Partnership Project (English: 3rd Generation Partnership Project, 3GPP) RAN2#104 meeting, RAN2 agreed to conditional handover (English: conditional handover) for the enhancement of mobility (English: mobility). Conditional handover refers to some special scenarios, such as user equipment (English: User Equipment, UE for short) moving at high speed or under high frequency conditions, it is necessary to frequently switch between different access base stations, such as high-speed rail scenarios.

At present, the specific manner in which the UE switches the access base station is implemented based on the target base station, and the problem of data connection interruption may occur before the handover.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a method, device, and storage medium for handover of a base station, so as to avoid problems such as connection interruption caused by poor channel quality of the source base station.

In the first aspect, the embodiments of the present application may provide a method for handover of a base station, which is applied to a UE, and the method includes:

receiving a handover command sent by the currently accessed source base station, where the handover command includes information used to indicate the first target base station;

detecting whether the source base station satisfies a first condition, where the first condition is a condition for judging the quality of service of the source base station;

If the source base station satisfies the first condition, establish a connection with the first target base station.

In the second aspect, the embodiments of the present application can provide a method for handover of a base station, which is applied to a network device, and the method includes:

configuring the first target base station to be handed over for the UE;

Send a handover command to the UE, where the handover command includes information for indicating the first target base station and a first condition, where the first condition is a condition for judging the service quality of the source base station.

In a third aspect, the embodiments of the present application may provide a user equipment, including:

a receiving module, configured to receive a handover command sent by the currently accessed source base station, where the handover command includes information used to indicate the first target base station;

a processing module, configured to detect whether the source base station satisfies a first condition, where the first condition is a pre-acquired condition for judging the service quality of the source base station;

A sending module, configured to establish a connection with the first target base station if the source base station satisfies the first condition.

In a fourth aspect, an embodiment of the present application may provide a network device, including:

a processing module, configured to configure the first target base station to be handed over for the user equipment UE;

A sending module, configured to send a handover command to the UE, where the handover command includes information used to indicate the first target base station and a first condition, where the first condition is used to determine the service of the source base station quality conditions.

In a fifth aspect, the embodiments of the present application may provide a user equipment, including:

processors, memories, receivers, transmitters, interfaces to communicate with network devices;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the base station handover method of the first aspect.

Optionally, the above-mentioned processor may be a chip.

In a sixth aspect, an embodiment of the present application may provide a network device, including:

processors, memories, transmitters, interfaces to communicate with user equipment;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the base station handover method of the second aspect.

Optionally, the above-mentioned processor may be a chip.

In a seventh aspect, embodiments of the present application may provide a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, which are used to implement the computer-executable instructions when executed by a processor. The handover method of the base station described in the second aspect.

In an eighth aspect, embodiments of the present application may provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the second aspect. The handover method of the base station described above.

In a ninth aspect, an embodiment of the present application provides a program, which, when the program is executed by a processor, is used to execute the method for handover of a base station according to the first aspect.

In a tenth aspect, an embodiment of the present application provides a program that, when the program is executed by a processor, is used to execute the method for handover of a base station as described in the second aspect.

In an eleventh aspect, an embodiment of the present application provides a computer program product, including program instructions, where the program instructions are used to implement the method for handover of a base station as described in the first aspect.

In a twelfth aspect, an embodiment of the present application provides a computer program product, including program instructions, where the program instructions are used to implement the method for handover of a base station according to the second aspect.

In a thirteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the base station handover method described in the first aspect.

Further, the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the first aspect. The handover method of the base station.

In a fourteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the base station handover method described in the second aspect.

Further, the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the second aspect The handover method of the base station.

In the base station handover method, device, and storage medium provided by the embodiments of this application, the UE receives a handover command sent by the currently accessed source base station, where the handover command includes information used to indicate the first target base station, and then detects whether the source base station has The first condition is met. If the source base station meets the first condition, a connection is established with the first target base station. The first condition is a condition for judging the service quality of the source base station. When the source base station meets the condition, it directly switches to the target base station. , it is not necessary to wait for the target base station to meet the configuration conditions before handover, avoiding problems such as connection interruption caused by the poor channel quality of the source base station.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic diagram of a communication system to which an embodiment of the application is applied;

FIG. 2 is a schematic flowchart of a method for handover of an access base station provided by the present application;

3 is a schematic flowchart of Embodiment 1 of a method for handover of a base station provided by the present application;

FIG. 4 is a schematic structural diagram of Embodiment 1 of a user equipment provided by the present application;

FIG. 5 is a schematic structural diagram of Embodiment 1 of a network device provided by the present application;

FIG. 6 is a schematic structural diagram of Embodiment 2 of the user equipment provided by the present application;

FIG. 7 is a schematic structural diagram of Embodiment 2 of a network device provided by this application.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The terms "first", "second" and the like in the description, claims and the above-mentioned drawings of the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein can, for example, be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

FIG. 1 is a schematic diagram of a communication system to which an embodiment of the present application is applied. As shown in FIG. 1 , the communication system includes user equipment (English: User Equipment, UE for short) and network equipment. It can be understood that, in an actual communication system, there may be one or more UEs, network devices, and network devices, and FIG. 1 only takes one UE as an example.

The network device may be an access device in a cellular network, for example, it may be an access device in an LTE network and its evolution network, for example, an evolved base station (Evolutional Node B, eNB or eNodeB for short) is taken as an example in FIG. 1 , the access device may also be a relay station, an access point (Access Point, AP for short) and other devices in the WLAN,

User equipment UE includes equipment such as access terminal, subscriber unit, subscriber station, mobile station, mobile station, user terminal, terminal, wireless communication equipment, user agent or user equipment. It can be a smart phone, a cellular phone, a cordless phone, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, and the like.

In the scenario shown in Figure 1, in the application process of the UE, for some special scenarios, such as the UE is on a high-speed moving vehicle, or under high-frequency conditions, the UE needs to frequently switch between different access devices, and also It is called access point, access network equipment, network equipment, etc. In this case, the base station is used as an example. The UE needs to frequently switch the access base station. At present, the specific way for the UE to switch the access base station is to send the handover command (HO command) in advance. Allocate the UE, and the HO command can contain the conditions for the UE to perform handover, which is for the target base station, that is to say, the UE needs to detect that the target base station meets certain conditions, and the UE will initiate access based on the received handover command. Establish a connection with the target base station. FIG. 2 is a schematic flowchart of a method for switching access to a base station provided by the present application. As shown in FIG. 2 , the process of switching a UE from a source base station to a target base station mainly includes:

The UE measures the channel of the source base station, and reports the corresponding measurement report. The source base station (source eNB) conducts interactive negotiation with other serving base stations to determine the target base station that the UE can switch to, and then sends the HO command to the UE. The HO command includes at least the target base station (that is, the target eNB in the figure) and the handover condition for switching to the target base station, which is mainly for the target base station, that is, after the UE receives the HO command, The channel quality and other parameters are detected to determine whether the handover conditions are met. If so, the UE initiates an access procedure to the target base station to switch from the source base station to the target base station.

Then, in this solution, the handover condition configured for the UE is only for the target base station, that is to say, the target base station must satisfy the handover condition, and the UE initiates access based on the received HO command, and then in the specific application process, there is a target base station. The channel strength of the base station does not meet the configured conditions, but the channel quality of the source base station is already very low, which leads to the deterioration of the transmission quality of the UE, and even the link failure. Based on this, the present application proposes a base station handover method. During the conditional handover, the channel quality of the source base station is detected, so that the UE can handover to the target base station when the channel quality of the source base station decreases.

The handover method of the base station will be described below through specific embodiments.

FIG. 3 is a schematic flowchart of Embodiment 1 of a base station handover method provided by the present application. As shown in FIG. 3 , the base station handover method specifically includes the following steps:

S101: Configure a first target base station to be handed over for the UE.

In this embodiment, the base station currently accessed by the UE, that is, the source base station, can configure the target base station to be handed over for the UE according to at least one piece of information such as the measurement result reported by the UE, the movement track of the UE, or the location of the UE, and the source base station determines in advance. The movement track of the UE will obtain the base station that the UE moves to the corresponding location that can provide services, and the source base station will negotiate with other base stations that can provide services for the UE, obtain the corresponding access configuration information, and determine whether it can provide access for the UE. service, after the negotiation is completed, the next target base station to be handed over by the UE is determined, that is, the first target base station.

Optionally, in a specific implementation manner, the source base station may determine multiple target base stations for the UE, and the multiple target base stations include the first target base station.

In the specific implementation of this solution, it should be understood that this process may also be performed by a core network device or other network access device, which is not limited to this solution.

S102: Receive a handover command sent by the currently accessed source base station, where the handover command includes information used to indicate the first target base station.

In this embodiment, after the source base station or other network device determines the first target for the UE, it needs to send the first target base station to the UE through a handover command. The handover command refers to a conditional handover, that is, conditional handover. Generally speaking, the handover command may carry information used to indicate the first target base station, for example, the identifier of the first target base station and the like.

Optionally, the handover command may also carry the condition in the conditional handover process, that is, the condition for limiting the channel quality of the source base station, which is hereinafter referred to as the first condition. In the first condition, a certain condition is set for the service quality of the source base station, and if the UE detects that the service quality of the source base station satisfies the condition, it triggers the UE to establish a connection with the first target base station. In the specific implementation of this solution, it should be understood that establishing a connection between the UE and the first target base station includes: the UE is handed over from the source base station to the first target base station, that is, the UE disconnects the connection with the source base station and establishes a connection with the first target base station; or It includes that the UE continues to connect with the source base station and establishes a connection with the first target base station at the same time.

In a specific implementation of the solution, if the received handover command includes multiple target base stations, the UE needs to determine the first target base station from the multiple target base stations. The rule selects one of multiple target base stations as the first target base station. For example, according to the service quality of each target base station, a base station with better service quality is determined as the first target base station. Specifically, the first target base station is any one of the at least one target base station, or the first target base station It is the base station with the best service quality among the at least one target base station, and the service quality can be represented by parameters such as channel quality, which is not limited in this solution.

S103: Detect whether the source base station satisfies the first condition.

In this solution, the first condition is a pre-acquired condition for judging the service quality of the source base station.

In this embodiment, after receiving the handover command, the UE needs to detect the source base station to determine some parameters that can represent the service quality of the source base station, so as to determine whether the source base station can continue to provide services for the UE. After the parameters of the quality of service of the accessed source base station, it is necessary to determine whether the source base station satisfies the first condition according to the pre-obtained first condition, and if so, trigger the UE to establish a connection process with the first target base station. In this solution, generally speaking, the first condition is used to define the minimum standard that can continue to provide services for the UE. For example, a channel quality threshold can be set, if the first channel quality of the source base station is lower than the threshold (implementation of this solution) In the example, the first channel quality is used to represent the channel quality of the source base station, and the second channel quality is used to represent the channel quality of the first target base station). The first target base station may also be a limiting condition of other parameters such as the number of retransmissions, which is not limited in this solution.

In a specific implementation, the first condition includes any one or more of the following conditions:

(1) The first channel quality of the source base station is lower than the first threshold.

In this solution, the UE needs to detect whether the first channel quality of the source base station is less than a preset first threshold, where the first threshold is a configured value, which is generally the lowest limit that can continue to provide services for the UE. Optionally, the first threshold may also be a value determined according to the second channel quality of the first target base station, for example, the second channel quality of the first target base station may be used as the first threshold. The meaning of this solution is to select a base station with better channel quality from the source base station and the first target base station to provide services for the UE. As long as the channel quality of the new first target base station is better than that of the source base station, the accuracy of data transmission of the UE can be improved. and efficiency. In this solution, the UE needs to detect the second channel quality of the first target base station in order to compare it with the first channel quality to determine whether the first condition is met. Therefore, the UE also needs to obtain the second channel of the first target base station. quality.

In this solution, the UE may detect the currently accessed source base station, and obtain the first channel quality of the source base station, where the first channel quality may be Reference Signal Receiving Power (English: Reference Signal Receiving Power, RSRP for short), Reference Signal Receiving Quality (English: Reference Signal Receiving Quality, referred to as: RSRQ), one or more of Reference Signal-Signal to Interference plus Noise Ratio (English: Reference Signal-Signal to Interference plus Noise Ratio, referred to as: RS-SINR), and also It can be other parameters used to express the channel quality, which is not limited in this solution, and the unit of the parameter expressing the channel quality can be dB or dBm. Similarly, the second channel quality may be one or more of RSRP, RSRQ, and RS-SINR of the first target base station, or may be other parameters used to express the channel quality, and the unit may be dB or dBm, There is no restriction on this program.

In a specific implementation manner, generally speaking, the UE does not continuously detect the channel quality of the source base station, but can acquire the first channel quality only under certain conditions, and the channel quality can be configured in the UE. Detection conditions, or the network side configures the channel quality detection conditions for the UE, and the UE obtains the first channel quality only after detecting that the channel quality detection conditions are met. Specifically, the channel quality detection conditions may include at least any of the following: One or more conditions:

(1) The number of out-of-sync indications received by the source base station exceeds the preset first number of times.

The out-of-sync indication means that the UE detects that it cannot be synchronized with the source base station, and can send an indication to the source base station to indicate that the UE and the source base station cannot be synchronized, that is, an out-of-sync indication. After the number of times the source base station continuously receives out-of-sync indications exceeds the preset number, it proves that the UE and the source base station cannot be synchronized, which may easily lead to problems such as data transmission errors. At this time, the UE can obtain the first channel quality of the source base station. .

(2) The timer for detecting the channel quality of the source base station times out; the meaning of this solution means that a timer is set in the UE in advance, the channel quality of the source base station is detected according to a certain time interval, and the timer starts timing. And the set time is reached, that is, the first channel quality of the source base station is acquired after the timer expires.

(3) The number of radio link layer control (Radio Link Control, RLC) retransmission times of the source base station reaches a preset second number of times. The main function of the RLC layer is to provide segmentation and retransmission services for users and control data to reduce transmission errors. However, when the number of retransmissions is too many, it means that there is a problem with the link or the reliability is low, so a certain number of retransmissions can be set. , that is, the second number of times, if the number of RLC retransmissions reaches the second number of times, the UE obtains the first channel quality of the currently accessed source base station, and determines whether it needs to switch to the target base station in advance.

(4) A radio link failure (English: Radio Link Failure, RLF for short) occurs in the source base station. Generally speaking, the main reasons for RLF are as follows: wireless network interference; cell alarms, equipment problems; terminal problems; handover failures caused by missed configuration of neighboring cells; weak wireless network coverage; cell base stations are not synchronized; target cell full load. In addition to the problem of the UE itself, other reasons indicate that the service quality of the currently accessed source base station is degraded. At this time, the UE can be triggered to detect the quality of the first channel of the source base station to determine whether it can access the first target in advance. base station.

Detecting the quality of the first channel according to a certain condition triggering or time detection can also reduce the power consumption of the UE.

(2) The number of out-of-sync indications received by the source base station exceeds the preset first number of times, which means that the UE detects that it cannot be synchronized with the source base station, and can send an out-of-sync indication to the source base station, that is, an out-of-sync indication , after the number of times that the source base station continuously receives out-of-sync indications exceeds the preset number, it proves that the UE and the source base station cannot be synchronized, which may easily lead to problems such as data transmission errors. At this time, the UE accesses the first target base station in advance.

(3) The timer used to detect the channel quality of the source base station expires; the meaning of this solution means that a timer is set in the UE in advance, the channel quality of the source base station is detected according to a certain time interval, and the timer starts timing. And the set time is reached, that is, the first target base station is accessed after the timer expires.

(4) The number of RLC retransmissions of the source base station reaches a preset second number of times. The main function of the RLC layer is to provide segmentation and retransmission services for users and control data to reduce transmission errors. However, when the number of retransmissions is too many, it means that there is a problem with the link or the reliability is low, so a certain number of retransmissions can be set. , that is, the second number of times, if the number of RLC retransmissions reaches the second number of times, the UE may switch to the first target base station in advance.

(5) RLF occurs at the source base station. Generally speaking, the main reasons for RLF are as follows: wireless network interference; cell alarms, equipment problems; terminal problems; handover failures caused by missed configuration of neighboring cells; weak wireless network coverage; cell base stations are not synchronized; target cell full load. Except for the problem of the UE itself, other reasons all indicate that the service quality of the currently accessed source base station is degraded, and at this time, the UE can access the first target base station in advance.

S104: If the source base station satisfies the first condition, establish a connection request with the first target base station.

In this step, the UE detects the currently accessed source base station, determines that the source base station satisfies the first condition, and then determines to handover the UE to the first target base station. Specifically, if the source base station is the first target base station configured by the UE resource information, the connection can be established directly; otherwise, the UE can initiate an access procedure to the first target base station, complete the access procedure, and establish a connection with the first target base station.

In the specific implementation of this solution, the first condition may be carried in the handover command and configured to the UE. Optionally, the first condition may also be configured to the UE through a system message or RRC signaling, that is, the first condition is carried in a system message or RRC signaling and sent to the UE, which is not limited in this solution.

Optionally, in a specific implementation of this solution, the UE not only needs to judge whether the source base station satisfies the first condition, but also judge whether the first target base station meets the service requirements that can provide the UE. The second channel quality of the first target base station needs to be acquired. Correspondingly, this step can be specifically implemented as: the source base station satisfies the first condition, and the second channel quality is greater than the second threshold, then establishes a connection with the first target base station; wherein, the second threshold is a preset value Or according to the value determined by the quality of the first channel, in a specific implementation, the second threshold may be the sum of the quality of the first channel and a set value; the set value is greater than or equal to 0dB, for example: 3dB, 6dB, etc. .

In the base station handover method provided in this embodiment, the UE receives a handover command sent by the currently accessed source base station, where the handover command includes information indicating the first target base station, and then detects whether the source base station satisfies the pre-acquired first condition, If the source base station satisfies the first condition, it establishes a connection with the first target base station. The first condition is the pre-acquired condition that defines the quality of service of the source base station. Wait until the target base station meets the configured conditions, and then perform handover to avoid problems such as connection interruption caused by poor channel quality of the source base station.

On the basis of the above embodiment, if the UE successfully establishes a connection with the first target base station, the UE may report the reason for accessing the first target base station to the first target base station or other devices on the network side (such as core network equipment, etc.), such as : The reason may include that the channel quality of the source base station is lower than the set first threshold, etc. The first target base station may instruct the source base station to perform data forwarding after receiving the reason.

If the UE fails to establish a connection with the first target base station, the UE can initiate connection re-establishment, establish a connection with the network side again, and can connect to the first target base station, or the source base station or other base stations after the re-establishment, which is not limited to this solution. . For example, an RRC reestablishment message may be sent to the first target base station, that is, it initiates RRC connection reestablishment to access the first target base station.

After the UE fails to establish a connection with the first target base station, it may not initiate connection re-establishment.

In the above solution, after the source base station satisfies the first condition, whether the service quality of the first target base station satisfies the corresponding second condition is temporarily ignored, that is, the second condition is ignored after the first condition is met.

In another implementation manner of the solution, the UE may also obtain a second condition, specifically, the source base station may configure the second condition through a handover command at the same time, and the second condition is used to limit the quality of service of the first target base station, that is, For judging whether the first target base station satisfies the handover condition, for example, conditions such as the threshold value of the second channel quality of the first target base station may be configured in the second condition.

Optionally, the second condition may also be configured in other manners, such as a system broadcast message or RRC signaling, etc., which is similar to the configuration of the first condition and will not be repeated here.

Based on the solutions provided in each of the above embodiments, it can be seen that the base station handover method provided by the present application includes at least such a scenario: the UE receives the HO command of the conditional handover, and the service quality of the source base station continues to decline to a certain extent, but the current The first target base station has not met the second condition, but the service quality of the first target base station is better than that of the source base station. In this case, in order to avoid the source base station RLF from initiating RRC connection re-establishment, the UE can access the target base station in advance.

However, in the specific application process of this solution, when the UE receives the HOcommand of the conditional handover, the first target base station has not met the second condition assigned to the UE during the period when the assigned RA resource is valid. In this case, The UE can report to the source base station, so that the source base station reselects the target base station to initiate a handover request or trigger measurement again. Another possibility is that when the channel quality of the source base station and the target base station is not good, the UE can only initiate RRC connection re-establishment.

Optionally, the UE may also determine whether to establish a connection with the first target base station in combination with the first condition and the second condition. Specifically, if the source base station satisfies the first condition and the first target base station satisfies the second condition , the UE establishes a connection with the first target base station.

The base station handover method provided by the present application avoids the situation that the UE has not yet been handed over to the target base station when the conditional handover is configured, but the channel quality of the source base station is relatively poor, which leads to RLF, and at the same time increases the success probability of the handover.

The handover method of the base station provided by the embodiment of the present application is described in detail above, and the user equipment and the network device provided by the embodiment of the present application will be described below.

FIG. 4 is a schematic structural diagram of Embodiment 1 of a user equipment provided by the present application. As shown in FIG. 4 , the user equipment 10 includes:

a receiving module 11, configured to receive a handover command sent by the currently accessed source base station, where the handover command includes information used to indicate the first target base station;

a processing module 12, configured to detect whether the source base station satisfies a first condition, where the first condition is a pre-acquired condition for judging the service quality of the source base station;

The sending module 13 is configured to establish a connection with the first target base station if the source base station satisfies the first condition.

The user equipment provided in this embodiment is used to execute the technical solution on the UE side in any of the foregoing method embodiments. The implementation principle and technical effect are similar. The UE receives a handover command sent by the currently accessed source base station, and the handover command includes The information used to indicate the first target base station, and then detect whether the source base station satisfies the first condition, and if so, establish a connection with the first target base station, that is, access the first target base station, and when the source base station meets the handover condition, directly switch over To the target base station, there is no need to wait for the target base station to meet the configuration conditions before handover, avoiding problems such as connection interruption caused by poor channel quality of the source base station.

On the basis of the above embodiment, the first condition includes any of the following conditions:

The first channel quality of the source base station is lower than a first threshold, where the first threshold is a configured value or a value determined according to the second channel quality of the first target base station;

The number of out-of-sync indications received by the source base station exceeds a preset first number of times;

The timer for detecting the channel quality of the source base station times out;

The number of RLC retransmissions of the source base station reaches a preset second number of times;

The source base station generates RLF.

In a specific implementation manner, the first condition includes that the first channel quality is lower than a first threshold, and the processing module 12 is specifically configured to:

It is detected that the first channel quality of the source base station is obtained under the condition that the channel quality detection condition is satisfied;

Wherein, the channel quality detection conditions include any of the following conditions:

The number of out-of-sync indications received by the source base station exceeds a preset first number of times;

The timer for detecting the channel quality of the source base station times out;

The number of RLC retransmissions of the source base station reaches a preset second number of times;

The source base station generates RLF.

Optionally, the switching command further includes the first condition.

Optionally, the receiving module 11 is also used for:

receiving a system message; the system message carries the first condition;

or,

Receive radio resource control RRC signaling, where the RRC signaling carries the first condition.

Optionally, the sending module 13 is also used for:

If the connection with the first target base station is successfully established, the reason for accessing the first target base station is sent to the first target base station, or the reason for accessing the first target base station is sent to the core network device.

On the basis of any of the above embodiments, the sending module 13 is further configured to:

If the connection with the first target base station fails to be established, connection re-establishment is initiated.

Optionally, the first channel quality includes at least one of RSRP, RSRQ, and RS-SINR.

Optionally, the processing module 12 is also used for:

acquiring the second channel quality of the first target base station;

Optionally, the sending module 13 is specifically used for:

The source base station satisfies the first condition, and the second channel quality is greater than a second threshold, then establishes a connection with the first target base station; wherein the second threshold is a preset value or according to the first The value determined by the channel quality.

Optionally, the second threshold is the sum of the first channel quality and a set value; the set value is greater than or equal to 0 dB.

Optionally, the receiving module 11 is also used for:

A second condition is acquired, where the second condition is used to judge the service quality of the first target base station.

Correspondingly, the sending module 13 is specifically used for:

If the source base station satisfies the first condition and the first target base station satisfies the second condition, establish a connection with the first target base station.

Optionally, the switching command includes:

at least one target base station, and a second condition corresponding to each target base station, where each second condition is used to judge the channel quality of the corresponding target base station;

The first target base station is any one of the at least one target base station or a base station selected from the at least one target base station according to a preset rule.

The user equipment provided by any of the foregoing implementation manners is used to execute the technical solutions on the UE side of any of the foregoing method embodiments, wherein the implementation principles and technical effects are similar, and details are not described herein again.

FIG. 5 is a schematic structural diagram of Embodiment 1 of a network device provided by this application. As shown in Figure 5, the network device 20 includes:

a processing module 21, configured to configure the first target base station to be handed over for the UE;

A sending module 22, configured to send a handover command to the UE, where the handover command includes information used to indicate the first target base station and a first condition, where the first condition is used to determine the source base station's Conditions of service quality.

Optionally, the first condition includes any of the following conditions:

The first channel quality of the source base station is lower than a first threshold, and the first threshold is a configured value or the second channel quality of the first target base station;

The number of out-of-sync indications received by the source base station exceeds a preset first number of times;

The timer for detecting the channel quality of the source base station times out;

The number of RLC retransmissions of the source base station reaches a preset second number of times;

The source base station generates RLF.

Optionally, the network device includes the source base station currently accessed by the user.

The network device provided in the above embodiment is used to implement the technical solution on the source base station side in any of the foregoing method embodiments, configure the target base station to be handed over for the UE, and can configure the first condition for handover to the target base station, the first The condition is used to limit the service quality of the source base station. When the source base station meets the handover conditions, it can be directly switched to the target base station. It is not necessary to wait for the target base station to meet the configured conditions before switching to avoid the poor channel quality of the source base station. connection interruption, etc.

FIG. 6 is a schematic structural diagram of Embodiment 2 of a user equipment provided by the present application. As shown in FIG. 6, the user equipment 30 includes:

a processor 31, a memory 32, a receiver 33, a transmitter 34, an interface 35 for communicating with a network device;

The memory 32 stores computer-executed instructions;

The processor 31 executes the computer-executed instructions stored in the memory, so that the processor 31 executes the technical solution of the method for handover of a base station in any of the foregoing method embodiments.

FIG. 7 is a schematic structural diagram of Embodiment 2 of a network device provided by this application. As shown in Figure 7, the network device 40 includes:

The processor 42 , the memory 43 , the transmitter 44 , and the interface 45 for communicating with the user equipment; optionally, the network device 40 further includes a receiver 41 .

The memory 43 stores computer-executed instructions;

The processor 42 executes the computer-executed instructions stored in the memory, so that the processor 42 executes the method for handover of a base station on the base station side in any of the foregoing method embodiments.

The present application further provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the UE in any of the foregoing method embodiments. technical solution.

The present application further provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the base station side in any of the foregoing method embodiments. Technical solutions.

The embodiments of the present application further provide a program, which, when the program is executed by the processor, is used to execute the technical solutions of the UE in the foregoing method embodiments.

The embodiments of the present application further provide a program, which, when executed by the processor, is used to execute the technical solutions of the network device (base station) in the foregoing method embodiments.

Embodiments of the present application further provide a computer program product, including program instructions, where the program instructions are used to implement the technical solutions of the UE in the foregoing method embodiments.

Embodiments of the present application further provide a computer program product, including program instructions, where the program instructions are used to implement the technical solutions of the network device (base station) in the foregoing method embodiments.

Embodiments of the present application further provide a chip, including: a processing module and a communication interface, where the processing module can execute the technical solutions of the UE in the foregoing method embodiments.

Further, the chip also includes a storage module (eg, a memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the UE side. Technical solutions.

An embodiment of the present application further provides a chip, including: a processing module and a communication interface, where the processing module can execute the technical solutions of the network device (base station) in the foregoing method embodiments.

Further, the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the network device side. technical solution.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

In the specific implementation of the above user equipment and network equipment, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, CPU for short), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, referred to as: DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, referred to as: ASIC) and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps in combination with the method disclosed in the present application can be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

All or part of the steps for implementing the above method embodiments may be completed by program instructions related to hardware. The aforementioned program can be stored in a readable memory. When the program is executed, the steps including the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, ROM for short), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppydisk), optical disc (English: optical disc) and any combination thereof.

Claims (18)

1. A method for handover of a base station, characterized in that, applied to a user equipment UE, the method comprising: receiving a handover command sent by the currently accessed source base station, where the handover command includes information used to indicate the first target base station; detecting whether the source base station satisfies a first condition, where the first condition is a condition for judging the quality of service of the source base station; If the source base station satisfies the first condition, establish a connection with the first target base station without judging whether the first target base station meets the configuration condition, wherein the configuration condition includes a condition configured for channel quality; The first condition includes: the first channel quality of the source base station is lower than a first threshold, and the first threshold is a minimum standard of channel quality capable of providing services for the UE or according to the first target base station's quality the value determined by the second channel quality; The method further includes: obtaining the first channel quality of the source base station when it is detected that a channel quality detection condition is satisfied; wherein the channel quality detection condition includes any one of the following conditions: The number of out-of-sync indications received by the source base station exceeds a preset first number of times; The timer for detecting the channel quality of the source base station times out; The radio link layer of the source base station controls the number of RLC retransmissions to reach a preset second number of times; The source base station has a radio link failure RLF; The method further includes: if the connection with the first target base station is successfully established, sending the reason for accessing the first target base station to the first target base station, or sending the access to the core network device to the core network device. The reason for the first target base station. 2. The method of claim 1, wherein the handover command further includes the first condition. 3. The method according to claim 1, wherein the method further comprises: receiving a system message; the system message carries the first condition; or, Receive radio resource control RRC signaling, where the RRC signaling carries the first condition. 4. The method according to any one of claims 1 to 3, wherein the method further comprises: If the connection with the first target base station fails to be established, connection re-establishment is initiated. 5. The method according to any one of claims 1 to 3, wherein the first channel quality comprises reference signal received power RSRP, reference signal received quality RSRQ, reference signal to interference plus noise ratio RS-SINR at least one of. 6 . The method according to claim 1 , wherein the UE accesses the first target base station in advance when the first target base station does not meet the configuration condition. 7 . 7. A method for handover of a base station, wherein the method is applied to a network device, the method comprising: Configuring the first target base station to be handed over for the user equipment UE; Send a handover command to the UE, where the handover command includes information for indicating the first target base station and a first condition, where the first condition is a condition for judging the quality of service of the source base station, so that all When the source base station satisfies the first condition, the UE does not need to judge whether the first target base station meets the configuration condition, and establishes a connection with the first target base station, wherein the configuration condition includes the configuration condition for channel quality. condition; The first condition includes: the first channel quality of the source base station is lower than a first threshold, and the first threshold is a minimum standard of channel quality capable of providing services for the UE or according to the first target a value determined by the second channel quality of the base station; Wherein, the first channel quality of the source base station is obtained by the UE after detecting that the channel quality detection condition is satisfied; wherein, the channel quality detection condition includes any of the following conditions: The number of out-of-sync indications received by the source base station exceeds a preset first number of times; The timer for detecting the channel quality of the source base station times out; The radio link layer of the source base station controls the number of RLC retransmissions to reach a preset second number of times; The source base station has a radio link failure RLF. 8. A user equipment, comprising: a receiving module, configured to receive a handover command sent by the currently accessed source base station, where the handover command includes information used to indicate the first target base station; a processing module, configured to detect whether the source base station satisfies a first condition, where the first condition is a condition for judging the quality of service of the source base station; A sending module, configured to establish a connection with the first target base station if the source base station satisfies the first condition without judging whether the first target base station meets the configuration condition, wherein the configuration condition includes a channel quality the configured conditions; The first condition includes: the first channel quality of the source base station is lower than a first threshold, and the first threshold is a minimum standard of channel quality capable of providing services for the UE or according to the first target base station's quality the value determined by the second channel quality; The processing module is further configured to obtain the first channel quality of the source base station when it is detected that the channel quality detection condition is satisfied; wherein the channel quality detection condition includes any one of the following conditions: The number of out-of-sync indications received by the source base station exceeds a preset first number of times; The timer for detecting the channel quality of the source base station times out; The radio link layer of the source base station controls the number of RLC retransmissions to reach a preset second number of times; The source base station has a radio link failure RLF; The sending module is further configured to: if the connection with the first target base station is successfully established, send the reason for accessing the first target base station to the first target base station, or send the access reason to the core network device The reason for the first target base station. 9. The user equipment according to claim 8, wherein the handover command further comprises the first condition. 10. The user equipment according to claim 8, wherein the receiving module is further configured to: receiving a system message; the system message carries the first condition; or, Receive radio resource control RRC signaling, where the RRC signaling carries the first condition. 11. The user equipment according to any one of claims 8 to 10, wherein the sending module is further configured to: If the connection with the first target base station fails to be established, connection re-establishment is initiated. 12. The user equipment according to any one of claims 8 to 10, wherein the first channel quality comprises reference signal received power RSRP, reference signal received quality RSRQ, reference signal to interference plus noise ratio RS-SINR at least one of them. 13. The user equipment according to any one of claims 8 to 10, wherein the sending module is further configured to: When the first target base station does not meet the configuration condition, the user equipment is connected to the first target base station in advance. 14. A network device, comprising: a processing module, configured to configure the first target base station to be handed over for the user equipment UE; A sending module, configured to send a handover command to the UE, where the handover command includes information used to indicate the first target base station and a first condition, where the first condition is used to judge the quality of service of the source base station condition, so that the UE does not need to judge whether the first target base station meets the configuration condition when the source base station satisfies the first condition, and establishes a connection with the first target base station, wherein the configuration condition includes Conditions configured for channel quality; The first condition includes: the first channel quality of the source base station is lower than a first threshold, and the first threshold is a minimum standard of channel quality capable of providing services for the UE or according to the first target a value determined by the second channel quality of the base station; Wherein, the first channel quality of the source base station is obtained by the UE after detecting that the channel quality detection condition is satisfied; wherein, the channel quality detection condition includes any of the following conditions: The number of out-of-sync indications received by the source base station exceeds a preset first number of times; The timer for detecting the channel quality of the source base station times out; The radio link layer of the source base station controls the number of RLC retransmissions to reach a preset second number of times; The source base station has a radio link failure RLF. 15. A user equipment, comprising: processors, memories, receivers, transmitters, interfaces to communicate with network devices; the memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method for handover of a base station according to any one of claims 1 to 6. 16. A network device, comprising: processors, memories, transmitters, interfaces to communicate with user equipment; the memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor executes the handover method of a base station as claimed in claim 7 . 17. A computer-readable storage medium, wherein computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement any one of claims 1 to 6 The handover method of the base station described in item. 18. A computer-readable storage medium, wherein computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the base station according to claim 7 switching method.

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