WO2016138753A1

WO2016138753A1 - Handover delay measuring method, base station and system

Info

Publication number: WO2016138753A1
Application number: PCT/CN2015/088782
Authority: WO
Inventors: 刘鑫; 武见; 贺保国; 董建军
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-03-05
Filing date: 2015-09-01
Publication date: 2016-09-09
Also published as: CN105992268A

Abstract

Disclosed are a handover delay measuring method, a base station and a system applied to in the field of communications. Firstly, a target-side base station obtains a first time stamp for exchanging a first handover information message and transmitted from a source-side base station, and obtains a second time stamp for exchanging a second handover information message by itself; secondly, the target-side base station computes the difference between the second time stamp and the first time stamp to obtain a handover delay. Compared with related technologies, it is not necessary to perform path measurement, handover delays could be obtained by simple data obtainment at a target-side base station, thus avoiding the complexity of delay obtainment by path measurement. Furthermore, after the obtainment of a single-time handover delay, all the handover delays of the whole network could be measured simultaneously at a network side, thus the handover quality of the whole network could be obtained faster and better, quick and accurate reference could be provided for network optimization, and user experience could be improved.

Description

Switching delay measuring method, base station and system

Technical field

This document relates to, but is not limited to, the field of communications, and specifically relates to a handover delay measurement method, a base station, and a system.

Background technique

In order to ensure that in the complex terrain environment, the user can obtain good signal quality while moving, and ensure the smooth running of the service. The connection under the Long Term Evolution (LTE) system is an essential guarantee. And switching delay is an important indicator to measure the quality of switching. In an LTE commercial network, a large number of users switch every day. If the time from the disconnection to the recovery of the service is long, the user may feel a significant interruption in the call or use of the data service, which seriously affects the user's perception. Therefore, how to accurately and quickly obtain the switching delay level of the entire network and optimize the communication network is very important for operators.

The handover delay is defined as the time from the interruption of the source-side cell to the recovery of the communication in the target cell during the handover. The handover delay can be counted on the user's UE side or the base station side. There is basically no difference between the two, which can reflect the network handover performance. Related techniques for measuring UE side handover delay have the following disadvantages:

1) Counting the handover delay on the UE side, and carrying the terminal to switch the relevant base station to perform active road test;

2) Only one set of switching delay data can be obtained for each road test. If you want to obtain a large amount of data, you need to test multiple times;

3) In order to obtain the handover delay level of the entire network, it is necessary to traverse all base stations for mass road test, thereby acquiring handover delay data of the entire network;

4) The handover delay is calculated on the UE side, and only the current network handover delay level can be obtained. If the network structure change may cause the handover delay to change, the road test needs to be rearranged.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiments of the present invention provide a handover delay measurement method and system, and a base station, which solves the problem that the related art needs to perform the cumbersome operation of the road test on the UE side to measure the handover delay.

The embodiment of the invention provides a handover delay measurement method, including:

Obtaining, by the target side base station, a first timestamp of the first exchange information message that is sent by the source side base station;

Obtaining, by the target side base station, a second timestamp of the second handover information packet that is in itself;

The target side base station calculates a difference between the second timestamp and the first timestamp to obtain a handover delay.

In an embodiment of the present invention, before the acquiring, by the target side base station, the first timestamp of the first handover information message sent by the source side base station, the method further includes: performing step synchronization on the target side base station and the source side base station.

In an embodiment of the present invention, the first handover information packet includes a last downlink service packet and a last uplink service packet, or a last downlink service packet, or a last uplink service packet or a last A business message.

In an embodiment of the present invention, the second handover information packet includes a first downlink service packet and a first uplink service packet, or a first downlink service packet, or a first uplink service. The message or the first service message.

In an embodiment of the present invention, the acquiring, by the source side base station, the first timestamp of the first handover information message is:

Obtaining a handover notification message sent by the source-side base station; the handover notification message includes a first timestamp for interacting with the first handover information packet; and parsing the handover notification message to obtain the first handover of the source-side base station interaction The first timestamp of the message.

The embodiment of the invention further provides a handover delay measurement method, including:

The source side base station sends a first timestamp of the first handover information message to the target side base station.

In an embodiment of the present invention, the source side base station sends an interaction of the first handover information message. Before the time stamp is sent to the target side base station, the source side base station and the target side base station perform time synchronization.

In an embodiment of the present invention, the sending, by the first timestamp, the first timestamp of the first switching information message to the target side base station includes: adding a first timestamp of the first switching information message to the switching notification Transmitting, by the handover notification message, the first timestamp to the target side base station.

The target side base station performs time synchronization with the source side base station;

Transmitting, by the source side base station, a first timestamp of the first handover information message to the target side base station;

The target side base station acquires the first timestamp;

The embodiment of the invention further provides a side base station, including a first synchronization module, an acquisition module and a calculation module:

The first synchronization module is configured to perform time synchronization with an external base station;

The acquiring module is configured to acquire a first timestamp of the first switching information message that is sent by the external base station, and obtain a second timestamp of the second switching information message that is exchanged by the second base station;

The calculating module is configured to calculate a difference between the second timestamp and the first timestamp to obtain a switching delay.

An embodiment of the present invention further provides a base station, including a second synchronization module and a sending module:

The second synchronization module is configured to perform time synchronization with an external base station;

The sending module is configured to send a first timestamp of the first switching information message to the external base station.

The embodiment of the invention further provides a handover delay measurement system, including a source side base station and a target side base station:

The target side base station is configured to perform time synchronization with the source side base station; acquire the first timestamp; acquire a second timestamp of the second handover information message by itself; and calculate the second timestamp and the location The difference between the first timestamps is switched;

The source side base station is configured to send a first timestamp of the first handover information message to the target side base station.

An embodiment of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the foregoing method.

The beneficial effects of the embodiments of the present invention are:

A handover time delay measurement method, a base station, and a system are provided by the embodiment of the present invention. First, the target side base station acquires a first timestamp of the first handover information message sent by the source side base station, and acquires the second handover information of the self interaction. The second timestamp of the packet; then, the target side base station calculates a difference between the second timestamp and the first timestamp to obtain a handover delay. Compared with the related art, the road test is not required, and the handover delay can be obtained by acquiring simple data on the target base station side, and the delay of obtaining the delay by the road test can be avoided. Further, after obtaining a single handover delay, it can be simultaneously measured on the network side. The switching delay of all handovers of the entire network can quickly and better acquire the switching quality of the entire network, providing a fast and accurate reference for network optimization and improving user experience.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic flowchart of a handover delay measurement method according to Embodiment 1 of the present invention;

2 is a schematic flowchart of a handover delay measurement method according to Embodiment 2 of the present invention;

3 is a schematic flowchart of another handover delay measurement method according to Embodiment 2 of the present invention;

4 is a schematic flowchart of a handover delay measurement method according to Embodiment 3 of the present invention;

FIG. 5 is a schematic diagram of a format of an End Marker packet carrying no timestamp in a handover delay measurement method according to Embodiment 3 of the present invention;

FIG. 6 is a schematic diagram of a format of an End Marker message carrying a timestamp in a handover delay measurement method according to Embodiment 3 of the present invention;

FIG. 7 is a schematic structural diagram of a base station according to Embodiment 4 of the present invention;

FIG. 8 is a schematic structural diagram of another base station according to Embodiment 4 of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a handover delay measurement system according to Embodiment 4 of the present invention.

Preferred embodiment of the invention

The present application will be further described in detail below with reference to the accompanying drawings.

Embodiment 1:

The handover delay measurement method provided in this embodiment, as shown in FIG. 1, includes the following steps:

Step S101: The target side base station performs time synchronization with the source side base station;

Step S102: The target side base station acquires a first timestamp of the interaction first handover information message sent by the source side base station;

Step S103: The target side base station acquires a second timestamp of the second handover information message that is in itself.

Step S104: The target side base station calculates the difference between the second timestamp and the first timestamp to be switched. Delay.

In the above step S101, the target side base station and the source side base station are time-synchronized, and have a unified reference time, so that the handover delay between the base stations can be accurately calculated. Otherwise, each base station may maintain local time, which causes the reference time between the target side base station and the source side base station to be different, resulting in inaccurate measurement switching delay. Optionally, the time synchronization between the target side base station and the source side base station may be implemented by using a GPS, and of course, the time synchronization between the target side base station and the source side base station may be performed in other manners, which should be understood as related to the target side base station and the source side. The time synchronization method of the base station can be implemented. And, if the measurement of the handover delay is to be performed on a plurality of base stations, time synchronization is performed on the plurality of base stations. It is worth noting that if the time of the target base station and the source side base station are synchronized, time synchronization may not be performed.

In the above steps S102 and S103, the target side base station needs to know the time when the source side base station and the terminal UE switch, and the time after the connection with the terminal UE is successful after the handover. The specific time when the target base station acquires the handover between the source-side base station and the UE may be the first timestamp of the first-side handover information packet exchanged between the source-side base station and the UE, and the second time of the second handover information message being exchanged with the UE. The first switching information message and the second switching information message are packets that can reflect the handover. That is, the first handover information message is a message indicating that the source side base station performs handover and the terminal UE ends the interaction; the second handover information message is a report indicating that the target side base station has successfully switched to the terminal UE immediately after the handover is successful. Text. Optionally, the first switching information packet includes the last downlink service packet and the last uplink service packet, or the last downlink service packet or the last uplink service packet or the last service packet; the second handover The information packet includes the first downlink service packet and the first uplink service packet, or the first downlink service packet, or the first uplink service packet or the first service packet. For example, the first service information packet is used as the last service packet, that is, the target side base station can obtain the first timestamp of the last service packet that the source side base station interacts with the terminal, where the service packet refers to If the last service packet is the downlink service packet, the last service packet is the last downlink service packet. If the last service packet is the last service packet, For the uplink service packet, the last service packet is the last uplink service packet. Similarly, the second service information packet is used as the first service packet, that is, the target side base station can obtain the first timestamp of the first service packet that the user interacts with the terminal, where the service packet refers to the target. Base station cut The first service packet that is exchanged with the terminal, optionally, if the service packet that starts to be exchanged is a downlink service packet, the first service packet is the first downlink service packet; The service packet is an uplink service packet, and the first service packet is the first uplink service packet. The target side base station can obtain the first timestamp of the last service packet of the first time. The service packet here refers to the first packet that the target side base station interacts with the terminal after the mutual handover, optionally, if the first one The first packet is the downlink service packet, and the first packet is the first downlink service packet. If the first packet is the uplink service packet, the last packet is the last uplink packet. . Taking the first switching information packet as the last downlink service packet as an example, the target side base station obtains the first timestamp of the last downlink service packet that the source side base station interacts with the terminal, and of course, there may be an uplink after the situation. Interaction of business messages. Similarly, the target side base station may also obtain the first timestamp of the last uplink service packet that the source side base station interacts with the terminal. Of course, there may be a downlink service packet interaction later. The first switching information packet may be the last uplink service packet and the last downlink service packet, that is, the timestamp of the last uplink service packet and the timestamp of the last downlink service packet are obtained. The timestamp of the last uplink service packet and the timestamp of the last downlink service packet are both the first timestamp. Similarly, taking the second switching information packet as the first downlink service packet as an example, the target side base station obtains the second timestamp of the first downlink service packet that interacts with the terminal after the handover, and of course, the situation is preceded by There may be interactions of uplink service packets. Similarly, the target-side base station may also obtain the second timestamp of the first uplink service packet that the user interacts with the terminal after the handover. Of course, there may be interaction of the downlink service packet in front of the situation. The second switching information packet may be the first uplink service packet and the first downlink service packet, that is, the timestamp of the first uplink service packet and the time of the first downlink service packet. It is worth noting that the timestamp of the first uplink service packet and the timestamp of the first downlink service packet are both the second timestamp.

In the above step S104, the target side base station acquires the first timestamp of the first handover information packet of the source side base station and the second timestamp of the second handover information of the second base station, and obtains the base station according to the first timestamp and the second timestamp. Switching delay. Specifically, the handover delay is obtained as a difference between the second timestamp and the first timestamp. For example, if the target side base station obtains the first timestamp of the last service packet of the source side base station, it is 12:10:1, and the second timestamp of the first service packet is 12:10. 2 seconds, then the switching delay is the difference of two for 1 second. It should be noted that the calculation handover delay here may be an LTE network, or may be a communication network such as 2G and 3G.

Optionally, in the foregoing step S102, the first timestamp of the target side base station acquiring the first handover information packet of the source side base station may be the handover notification packet sent by the source side base station; the handover notification packet interaction first. The first timestamp of the information packet is switched. The first timestamp of the first handover information packet exchanged by the source side base station is obtained by parsing the handover notification message. It is to be noted that the handover notification message is a packet that the source-side base station tells the target-side base station to switch after the handover occurs. The optional packet can be an End Marker packet, of course, not limited to the End Marker packet. The message that the notification has been switched can be implemented. The manner of obtaining the first timestamp is not limited to being obtained by means of the notification message. It should be understood that the method can be implemented as long as the target base station can obtain the first timestamp of the source side base station. Optionally, the switch notification message may be an End Marker message, because the End Marker message is a type of GTP message, indicating the last message of the service flow. During each handover, when the UE side switches to the target cell, the core network cuts the service conduit from the source side base station to the target base station. Before the handover, the core network sends an End Marker message to the source side base station, and the source side base station forwards the End Marker message to the target base station. In this way, the first timestamp of the first handover information packet can be directly carried in the End Marker message to the target side base station, without using a specific handover notification message to inform the target side base station of the timestamp of the first handover information message. . The specific target-side base station can obtain the End Marker message exchanged by the source-side base station; the End Marker packet exchanges the first timestamp of the first handover information packet; and the End Marker message is parsed to obtain the first handover information report of the source-side base station. The first timestamp of the text. That is, the source side base station carries the first timestamp of the first handover information message into the End Marker message. Optionally, the target side base station parses the End Marker message to obtain the first timestamp of the first handover information packet of the source side base station, and may first parse the value of the extended handover indication H in the first byte to determine whether it is 1, for example, The first timestamp of the first switching information packet of the source side base station is obtained by parsing the first timestamp of the source side carried by the source side base station according to the TLV format.

Embodiment 2:

The handover delay measurement method provided in this embodiment, as shown in FIG. 2, includes the following steps:

Step S201: The source side base station performs time synchronization with the target side base station;

In this step, the source side base station and the target side base station perform time synchronization to ensure that the switching time delay between the base stations is accurately calculated with a uniform reference time.

Step S202: The source side base station sends a first timestamp of the first switching information message to the target side. Base station.

This embodiment further provides a handover delay measurement method, as shown in FIG. 3, including the following steps:

Step S301: The target side base station performs time synchronization with the source side base station;

Step S302: The source side base station sends a first timestamp of the first handover information message to the target side base station.

Step S303: The target side base station acquires the first timestamp.

Step S304: The target side base station acquires a second timestamp of the second handover information packet that is itself exchanged.

Step S305: The target side base station calculates a difference between the second timestamp and the first timestamp to obtain a handover delay.

Embodiment 3:

The embodiment of the present invention provides a method for measuring the handover delay of the base station side. In this example, the time base of the last uplink service of the source side base station and the timestamp of the last downlink service packet are acquired by the target side base station, and the target side is The first time of the base station itself is a timestamp of the first uplink service and a timestamp of the first downlink service packet. As shown in Figure 4, the following steps are included:

Step S401: The source side base station and the target side base station related to the handover ensure time synchronization, which is used as the basis for the later handover delay calculation;

Step S402: For a handover procedure, the end message (End Marker message) that is forwarded by the source-side base station carries the timestamp T _D1 of the last service packet on the source side and the timestamp T of the last service packet. _U1 ;

Step S403: After receiving the end message (End Marker message), the target base station saves the source side timestamp carried by the target base station, and collects the timestamp T _D2 of the first service packet and the first service packet of the uplink. Timestamp T _U2 ;

Step S404: Calculate the time difference between the target side and the source side to obtain the downlink handover delay T _D =(T _D2 -T _D1 ) and the uplink handover delay T _U =(T _U2 -T _U1 ), and complete the handover. Switching delay statistics. It should be noted that the timestamp T _D1 and the timestamp T _U1 in this embodiment are the first timestamps; the timestamp T _D2 and the timestamp T _{U2 in} this embodiment are the second timestamps.

In the above step S401, time synchronization of a plurality of base stations can be realized by using GPS. If the GPS time synchronization is not performed, each base station maintains the local clock. Therefore, the source side timestamp acquired in step S402 is different from the time reference of the target side timestamp, and the handover delay calculated in step S404 is inaccurate.

In the above steps S402 and S403, for the network side, there are a large number of handovers at multiple base stations at the same time, because the UE identity after the UE switches to the target base station changes every time the handover occurs, if the source side base station and the target The side base station reports the timestamp to the network side handover delay statistics module. Therefore, it is difficult for the network side to pair the acquired source side timestamps with the target side timestamps one by one, and the handover delay cannot be calculated. The timestamp of the last downlink packet of the source side base station and the timestamp of the last uplink packet are added to the original End Marker message received by the source side base station (as shown in FIG. 5), and forwarded to the handover target side base station. . After receiving the End Marker, the target side saves the time stamp carried by it.

The end Marker message format of the time-stamped back-transmitted by the source-side base station is shown in FIG. 6. This patent changes the reserved bit (fourth BIT) of the first byte in the original packet format to an extended handover indication H. If H is 0, the packet does not carry the source-side timestamp. If H is 1, the packet carries the source-side timestamp.

When the extended indication H is 1, the source side timestamp follows the Tunnel Endpoint Identifier field of the End Marker packet, and the source side timestamp format adopts the TLV format:

The upper 4 bits of the first byte of the timestamp indicate TYPE (downstream or upstream);

The lower 4 bits of the first byte of the timestamp represent LEN (the length of the subsequent valid timestamp);

The second byte of the timestamp starts to store the specific timestamp;

The switching source side base station uses the End Marker message in the above format to transmit the last packet timestamp T _D1 and the last packet timestamp T _U1 to the target side.

In the step S404, after receiving the End Marker, the handover target base station parses the value of the extended handover indication H in the first byte. If it is 0, the End Marker is normally processed; if it is 1, the End Marker is parsed. After the normal field, the source side timestamp carried in the following is parsed according to the TLV format, and the parsed source side timestamps T _D1 and T _{U1 are} saved.

After the target base station collects the first downlink service packet time T _D2 and the first uplink service packet time T _U2 after the handover, the downlink and uplink handover delays of the current handover are calculated by the following formula, and after the calculation is completed, The switch delay data is reported to the network side handover delay statistics module.

T _D =T _D2 -T _D1 (1)

T _U =T _U2 -T _U1 (2)

The above is only the switching delay statistics flow of one handover. If there are multiple handovers at the same time in the whole network, the source-side base station will send an End Marker packet carrying the source-side timestamp in each handover. The handover delay will be The handover target delay statistics module is directly calculated and reported to the network side. The specific handover delay may be an uplink handover delay, a downlink handover delay, or a sum of an uplink handover delay and a downlink handover delay.

The embodiment of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the method described in the foregoing embodiments.

Embodiment 4:

The target side base station 401 provided in this embodiment, as shown in FIG. 7, includes a first synchronization module 4011, an acquisition module 4012, and a calculation module 4013: the first synchronization module 4011 is configured to perform time synchronization with the source side base station; The 4012 is configured to obtain a first timestamp of the first switching information message sent by the source side base station, and obtain a second timestamp of the second switching information message that is exchanged by the source side; the calculating module 4013 is configured to calculate the second timestamp and the second timestamp The difference of a timestamp results in a switching delay. It should be noted that the target side base station 401 and the source side base station 402 in this embodiment are all ones of the conventional base station, that is, as long as the base station can implement the corresponding function of the source side base station, it can be called the source side base station, and the target side can be realized. The corresponding function of the base station may be referred to as a target side base station. Of course, one base station may be either a source side base station or a target side base station, and may be specifically determined according to specific conditions, and does not constitute a specific limitation.

Optionally, the first switching information packet includes the last downlink service packet and the last uplink service packet, or the last downlink service packet, or the last uplink service packet or the last service packet; The information message includes the first downlink service packet and the first uplink service packet. The text, or the first downlink service packet, or the first uplink service packet or the first service packet.

The embodiment further provides a source side base station 402. As shown in FIG. 8, the second synchronization module 4021 and the sending module 4022 are provided. The second synchronization module 4021 is configured to perform time synchronization with the target side base station. The sending module 4022 is configured to send. The first timestamp of the first handover information message is exchanged to the target side base station.

Optionally, the first switching information packet includes the last downlink service packet and the last uplink service packet, or the last downlink service packet, or the last uplink service packet or the last service packet.

The present embodiment further provides a handover delay measurement system, as shown in FIG. 9, including a source side base station 402 and a target side base station 401: the target side base station 401 is set to perform time synchronization with the source side base station 402; and the source side base station 402 is set. The first timestamp for transmitting the first handover information message is sent to the target side base station 401; the target side base station 401 is further configured to acquire the first timestamp, obtain the second timestamp of the second handover information message and the calculation The difference between the second timestamp and the first timestamp results in a handover delay.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program that instructs the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware or in the form of a software function module. This application is not limited to any specific combination of hardware and software.

The above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to be limiting, and the present application is only described in detail with reference to the preferred embodiments.

Industrial applicability

The above technical solution does not need to perform road test, and can obtain simple data on the target base station side. In order to obtain the switching delay, the delay of obtaining the delay by the road test can be avoided. After obtaining a single handover delay, you can simultaneously measure the handover delay of all handovers on the network, and obtain the handover quality of the entire network faster and better, providing fast and accurate reference for network optimization and improving user experience. degree.

Claims

A handover delay measurement method includes:

Obtaining, by the target side base station, a first timestamp of the first exchange information message that is sent by the source side base station;

Obtaining, by the target side base station, a second timestamp of the second handover information packet that is in itself;

The target side base station calculates a difference between the second timestamp and the first timestamp to obtain a handover delay.
The method for measuring handover delay according to claim 1, further comprising:

Before the target side base station acquires the first timestamp of the first handover information message sent by the source side base station, the target side base station performs time synchronization with the source side base station.
The switching delay measuring method according to claim 1, wherein

The first handover information packet includes a last downlink service packet and a last uplink service packet, or a last downlink service packet, or a last uplink service packet or a last service packet.
The switching delay measuring method according to claim 1, wherein

The second switching information packet includes a first downlink service packet and a first uplink service packet, or a first downlink service packet, or a first uplink service packet or a first service packet.
The handover time delay measurement method according to any one of claims 1 to 4, wherein the acquiring the first timestamp of the source side base station to exchange the first handover information message comprises:

Obtaining, by the source side base station, a handover notification message, where the handover notification message includes a first timestamp of the first handover information packet;

Parsing the handover notification message to obtain a first timestamp of the source side base station interacting with the first handover information message.
A handover delay measurement method includes:

The source side base station sends a first timestamp of the first handover information message to the target side base station.
The handover delay measurement method of claim 6, further comprising:

Transmitting, by the source side base station, a first timestamp of the first handover information message to the target side base station Previously, the source side base station and the target side base station performed time synchronization.
The switching delay measuring method according to claim 6, wherein

The first handover information packet includes a last downlink service packet and a last uplink service packet, or a last downlink service packet, or a last uplink service packet or a last service packet.
The handover delay measurement method according to any one of claims 6 to 8, wherein the transmitting the first timestamp of the first handover information message to the target side base station comprises:

Adding a first timestamp of the first switching information message to the handover notification message;

Transmitting the first timestamp to the target side base station by using the handover notification message.
A handover delay measurement method includes:

The target side base station performs time synchronization with the source side base station;

Transmitting, by the source side base station, a first timestamp of the first handover information message to the target side base station;

The target side base station acquires the first timestamp;

Obtaining, by the target side base station, a second timestamp of the second handover information packet that is in itself;

The target side base station calculates a difference between the second timestamp and the first timestamp to obtain a handover delay.
A side base station includes a first synchronization module, an acquisition module, and a calculation module:

The first synchronization module is configured to perform time synchronization with an external base station;

The acquiring module is configured to acquire a first timestamp of the first switching information message that is sent by the external base station, and obtain a second timestamp of the second switching information message that is exchanged by the second base station;

The calculating module is configured to calculate a difference between the second timestamp and the first timestamp to obtain a switching delay.
The base station according to claim 11, wherein

The first handover information packet includes a last downlink service packet and a last uplink service packet, or a last downlink service packet, or a last uplink service packet or a last service packet.
The base station according to claim 11, wherein

The second switching information packet includes a first downlink service packet and a first uplink service packet, or a first downlink service packet, or a first uplink service packet or a first service packet.
A base station includes a second synchronization module and a sending module:

The second synchronization module is configured to perform time synchronization with an external base station;

The sending module is configured to send a first timestamp of the first switching information message to the external base station.
The base station according to claim 14, wherein the first handover information message includes a last downlink service message and a last uplink service message, or a last downlink service message, or a last uplink service message or The last business message.
A handover delay measurement system includes a source side base station and a target side base station:

The target side base station is configured to perform time synchronization with the source side base station; acquire the first timestamp; acquire a second timestamp of the second handover information message by itself; and calculate the second timestamp and the location The difference between the first timestamps is switched;

The source side base station is configured to send a first timestamp of the first handover information message to the target side base station.
A computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 1 to 5.
A computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 6-9.
A computer storage medium having stored therein computer executable instructions for performing the method of claim 10.