CN111757371A - Statistical method of transmission delay, server and storage medium - Google Patents
Statistical method of transmission delay, server and storage medium Download PDFInfo
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- CN111757371A CN111757371A CN201910250249.0A CN201910250249A CN111757371A CN 111757371 A CN111757371 A CN 111757371A CN 201910250249 A CN201910250249 A CN 201910250249A CN 111757371 A CN111757371 A CN 111757371A
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Abstract
The invention discloses a transmission delay statistical method, a server and a storage medium, which are used for solving the technical problem of low accuracy of transmission delay statistics of an F1 interface in the prior art. The method comprises the following steps: sending a first message to a second node where a radio link control protocol (RLC) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report the processing delay of the data packet with the specified sequence number at the second node and the air interface; receiving a second message which carries processing delay and is returned by the second node based on the first message, and recording first time for receiving the second message; the second message is used for indicating that the data packet with the specified sequence number is successfully sent; and calculating the first time delay of the data packet with the specified sequence number transmitted on the communication interface between the first node and the second node based on the second time, the first time and the processing time delay of the data packet with the specified sequence number transmitted by the first node.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a transmission delay statistical method, a server, and a storage medium.
Background
In a 5G system, a 5G base station supports both a centralized architecture and a Centralized Unit (CU)/Distributed Unit (DU) split architecture, under which one CU may connect to one or more DUs.
In general, a CU handles radio higher layer protocol stack functions, such as Packet Data Convergence Protocol (PDCP); the DU handles the physical layer of baseband processing and part of the protocol stack functions of layer 2, such as Radio Link Control (RLC) layer, Medium Access Control (MAC) layer, etc. Wherein, the interface between the CU and the DU is an F1 interface.
Under the split architecture, since the PDCP and the RLC are located in different entities, when a node (generally referred to as a triggering node) where a CU is located transmits data to a UE through a node (generally referred to as a corresponding node) where a corresponding DU is located, there is usually a transmission delay in the F1 interface.
When processing delay-sensitive services, the transmission of the F1 interface cannot be ignored, but in the prior art, a CU cannot calculate the transmission delay of the F1 interface with certainty, so that operation, Maintenance and administration (OAM) cannot accurately evaluate the performance of the F1 interface.
Therefore, how to accurately count the transmission delay of the F1 interface becomes a technical problem to be solved urgently.
Disclosure of Invention
The invention provides a transmission delay statistical method, a server and a storage medium, which are used for solving the technical problem of low accuracy of transmission delay statistics of an F1 interface in the prior art.
In a first aspect, to solve the foregoing technical problem, an embodiment of the present invention provides a transmission delay statistical method applied to a first node where a packet data protocol convergence protocol PDCP layer is located, where the method includes:
sending a first message to a second node where a radio link control protocol (RLC) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report processing delay of a data packet with a specified sequence number at the second node and an air interface;
receiving a second message which carries the processing delay and is returned by the second node based on the first message, and recording first time for receiving the second message; wherein the second message is used for indicating that the data packet with the specified sequence number is successfully transmitted;
and calculating a first time delay of the data packet with the specified sequence number transmitted on a communication interface between the first node and the second node based on the second time when the first node sends the data packet with the specified sequence number, the first time and the processing time delay.
Sending a first message to a second node where a radio link control protocol (RLC) layer is located by a first node where a packet data protocol convergence protocol (PDCP) layer is located, wherein the first message carries indication information, the indication information is used for enabling the second node to report processing delay of a data packet with a specified sequence number at the second node and an air interface, and recording first time for receiving a second message after the first node receives the second message with the processing delay returned by the second node based on the first message, so that the first node calculates first delay of transmission of the data packet with the specified sequence number on a communication interface of the first node and the second node according to the first time, the second time and the processing delay; wherein the second message is used to indicate that the data packet with the specified sequence number has been successfully transmitted. Because the first node can accurately know the processing time (namely the processing time delay) of the data packet at the second node and the air interface through the method, unlike the prior art that the processing time of the data packet at the second node and the air interface cannot be known, the method provided by the embodiment of the invention can accurately calculate the transmission time delay of the data packet with the specified sequence number at the communication interface of the first node and the second node according to the second time when the first node sends the data packet, the first time when the second message is received, and the processing time.
Optionally, calculating a first time delay of the data packet with the specified sequence number on the communication interface between the first node and the second node includes:
performing difference operation on the first time and the second time to obtain a second time delay;
performing difference operation on the second time delay and the processing time delay to obtain a difference operation result;
and carrying out division operation on the difference operation result and 2 to obtain the first time delay.
Optionally, after calculating a first time delay of the data packet with the specified sequence number on the communication interface between the first node and the second node, the method further includes:
and sending the first time delay to operation, maintenance and management (OAM), wherein the first time delay is used for evaluating the performance of the communication interface.
Optionally, the first message is USER plane message downlink USER DATA DL USER DATA.
Optionally, the indication information is carried in a spare information element of the downlink user data message.
In a second aspect, a statistical method for transmission delay provided in the embodiments of the present invention is applied to a second node where a radio link control protocol RLC layer is located, and a technical solution of the method is as follows:
receiving a first message sent by a first node where a packet data protocol convergence protocol (PDCP) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report the processing delay of the data packet with the specified sequence number at the second node and an air interface;
detecting the sending state of the data packet with the specified sequence number at an air interface based on the indication information;
and when the sending state is successful sending, sending the processing delay of the data packet with the specified sequence number on the second node and the air interface to the first node through a second message, so that the first node calculates the first delay of the data packet with the specified sequence number transmitted on the communication interface of the first node and the second node according to the first time for receiving the second message, the second time for sending the data packet with the specified sequence number by the first node and the processing delay.
Optionally, detecting the sending state of the data packet with the specified sequence number on the air interface includes:
after the data packet with the assigned serial number is sent to a user terminal, whether a response message returned by the user terminal is received or not is detected;
and if the response message is received, determining that the sending state is successful sending.
Optionally, the processing delay is a difference between the sending time of the data packet with the specified sequence number successfully sent over the air interface and the receiving time of the data packet with the specified sequence number received by the second node.
Optionally, the second message is a downlink DATA transmission status DL DATA delay of the user plane message.
Optionally, the processing delay is recorded in a newly added information element of the downlink data transmission status message.
Optionally, the standby information element of the downlink data transmission status message is used to indicate whether the processing delay is carried.
In a third aspect, an embodiment of the present invention provides a server, where the server is a first server where a packet data protocol convergence protocol PDCP layer is located, and the server includes:
a sending unit, configured to send a first message to a second server where a radio link control protocol RLC layer is located; the first message carries indication information, and the indication information is used for enabling the second server to report processing delay of a data packet with a specified sequence number in the second server and an air interface;
a receiving unit, configured to receive a second message carrying the processing delay, which is returned by the second server based on the first message, and record a first time for receiving the second message; wherein the second message is used for indicating that the data packet with the specified sequence number is successfully transmitted;
and the calculating unit is used for calculating a first time delay of the data packet with the specified sequence number transmitted on the communication interface between the first server and the second server based on the second time when the first server sends the data packet with the specified sequence number, the first time and the processing time delay.
Optionally, the computing unit is specifically configured to:
performing difference operation on the first time and the second time to obtain a second time delay;
performing difference operation on the second time delay and the processing time delay to obtain a difference operation result;
and carrying out division operation on the difference operation result and 2 to obtain the first time delay.
Optionally, the sending unit is further configured to:
and sending the first time delay to operation, maintenance and management (OAM), wherein the first time delay is used for evaluating the performance of the communication interface.
Optionally, the first message is USER plane message downlink USER DATA DL USER DATA.
Optionally, the indication information is carried in a spare information element of the downlink user data message.
In a fourth aspect, an embodiment of the present invention provides a server, where the server is a second server where a radio link control protocol RLC layer is located, and the server includes:
a receiving unit, configured to receive a first message sent by a first server where a packet data protocol convergence protocol PDCP layer is located; the first message carries indication information, and the indication information is used for enabling the second server to report processing delay of a data packet with a specified sequence number in the second server and an air interface;
a detection unit, configured to detect, based on the indication information, a sending state of the data packet with the specified sequence number at an air interface;
and a sending unit, configured to send, when the sending status is successful sending, the processing delay of the data packet with the specified sequence number to the first server through a second message, so that the first server calculates, according to a first time for receiving the second message, a second time for sending the data packet with the specified sequence number by the first server, and the processing delay, a first delay for transmitting the data packet with the specified sequence number on a communication interface between the first server and the second server.
Optionally, the detection unit is specifically configured to:
after the data packet with the assigned serial number is sent to a user terminal, whether a response message returned by the user terminal is received or not is detected;
and if the response message is received, determining that the sending state is successful sending.
Optionally, the processing delay is a difference between the sending time of the data packet with the specified sequence number successfully sent over the air interface and the receiving time of the data packet with the specified sequence number received by the second server.
Optionally, the second message is a downlink DATA transmission status DL DATA delay of the user plane message.
Optionally, the processing delay is recorded in a newly added information element of the downlink data transmission status message.
Optionally, the standby information element of the downlink data transmission status message is used to indicate whether the processing delay is carried.
In a fifth aspect, an embodiment of the present invention further provides a server, where the server is a first server where a packet data protocol convergence protocol PDCP layer is located, and the server includes: a processor, a memory, and a transceiver;
the processor is used for reading the program in the memory and executing the following processes:
sending a first message to a second node where a radio link control protocol (RLC) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report processing delay of a data packet with a specified sequence number at the second node and an air interface;
receiving a second message which carries the processing delay and is returned by the second node based on the first message, and recording first time for receiving the second message; wherein the second message is used for indicating that the data packet with the specified sequence number is successfully transmitted;
and calculating a first time delay of the data packet with the specified sequence number transmitted on a communication interface between the first node and the second node based on the second time when the first node sends the data packet with the specified sequence number, the first time and the processing time delay.
Optionally, the processor is specifically configured to:
performing difference operation on the first time and the second time to obtain a second time delay;
performing difference operation on the second time delay and the processing time delay to obtain a difference operation result;
and carrying out division operation on the difference operation result and 2 to obtain the first time delay.
Optionally, the processor is further configured to:
and sending the first time delay to operation, maintenance and management (OAM), wherein the first time delay is used for evaluating the performance of the communication interface.
Optionally, the first message is USER plane message downlink USER DATA DL USER DATA.
Optionally, the indication information is carried in a spare information element of the downlink user data message.
In a sixth aspect, an embodiment of the present invention further provides a server, where the server is a second server where a radio link control protocol RLC layer is located, and the server includes: a processor, a memory, and a transceiver;
the processor is used for reading the program in the memory and executing the following processes:
receiving a first message sent by a first node where a packet data protocol convergence protocol (PDCP) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report the processing delay of the data packet with the specified sequence number at the second node and an air interface;
detecting the sending state of the data packet with the specified sequence number at an air interface based on the indication information;
and when the sending state is successful sending, sending the processing delay of the data packet with the specified sequence number on the second node and the air interface to the first node through a second message, so that the first node calculates the first delay of the data packet with the specified sequence number transmitted on the communication interface of the first node and the second node according to the first time for receiving the second message, the second time for sending the data packet with the specified sequence number by the first node and the processing delay.
Optionally, the processor is specifically configured to:
after the data packet with the assigned serial number is sent to a user terminal, whether a response message returned by the user terminal is received or not is detected;
and if the response message is received, determining that the sending state is successful sending.
Optionally, the processing delay is a difference between the sending time of the data packet with the specified sequence number successfully sent over the air interface and the receiving time of the data packet with the specified sequence number received by the second node.
Optionally, the second message is a downlink DATA transmission status DL DATA delay of the user plane message.
Optionally, the processing delay is recorded in a newly added information element of the downlink data transmission status message.
Optionally, the standby information element of the downlink data transmission status message is used to indicate whether the processing delay is carried.
In a seventh aspect, an embodiment of the present invention further provides a computer-readable storage medium, including:
the computer readable storage medium stores computer instructions which, when executed on a computer, cause the computer to perform the method of the first aspect as described above.
Through the technical solutions in one or more of the above embodiments of the present invention, the embodiments of the present invention have at least the following technical effects:
in the embodiment provided by the invention, a first node where a packet data protocol convergence protocol PDCP layer is located sends a first message to a second node where a radio link control protocol RLC layer is located, wherein the first message carries indication information, the indication information is used for enabling the second node to report the processing delay of a data packet with a specified sequence number at the second node and an air interface, and after the first node receives a second message which carries the processing delay and is returned by the second node based on the first message, the first time for receiving the second message is recorded, so that the first node calculates the first delay of the transmission of the data packet with the specified sequence number on a communication interface between the first node and the second node according to the first time, the second time and the processing delay; wherein the second message is used to indicate that the data packet with the specified sequence number has been successfully transmitted. Because the first node can accurately know the processing time (namely the processing time delay) of the data packet at the second node and the air interface through the method, unlike the prior art that the processing time of the data packet at the second node and the air interface cannot be known, the method provided by the embodiment of the invention can accurately calculate the transmission time delay of the data packet with the specified sequence number at the communication interface of the first node and the second node according to the second time when the first node sends the data packet, the first time when the second message is received, and the processing time.
Drawings
Fig. 1 is a flowchart of a statistical method for transmission delay at a first node according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating interaction between a first node and a second node according to an embodiment of the present invention;
fig. 3 is a flowchart of a statistical method for transmission delay at a second node according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first server according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second server according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another first server according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another second server according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a transmission delay statistical method, a server and a storage medium, which aim to solve the technical problem that the accuracy of the transmission delay of a statistical F1 interface is low in the prior art.
In order to solve the technical problems, the general idea of the embodiment of the present application is as follows:
a statistical method of transmission delay is provided, which is applied to a first node where a packet data protocol convergence protocol (PDCP) layer is located, and the method comprises the following steps: sending a first message to a second node where a radio link control protocol (RLC) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report the processing delay of the data packet with the specified sequence number at the second node and the air interface; receiving a second message which carries processing delay and is returned by the second node based on the first message, and recording first time for receiving the second message; the second message is used for indicating that the data packet with the specified sequence number is successfully sent; and calculating the first time delay of the data packet with the specified sequence number transmitted on the communication interface between the first node and the second node based on the second time, the first time and the processing time delay of the data packet with the specified sequence number transmitted by the first node.
In the above scheme, a first node where a packet data protocol convergence protocol PDCP layer is located sends a first message to a second node where a radio link control RLC layer is located, where the first message carries indication information, where the indication information is used to enable the second node to report a processing delay of a data packet with a specified sequence number at the second node and an air interface, and record a first time for receiving a second message after the first node receives a second message with the processing delay returned by the second node based on the first message, so that the first node calculates a first delay for transmitting the data packet with the specified sequence number on a communication interface between the first node and the second node according to the first time, the second time, and the processing delay; wherein the second message is used to indicate that the data packet with the specified sequence number has been successfully transmitted. Because the first node can accurately know the processing time (namely the processing time delay) of the data packet at the second node and the air interface through the method, unlike the prior art that the processing time of the data packet at the second node and the air interface cannot be known, the method provided by the embodiment of the invention can accurately calculate the transmission time delay of the data packet with the specified sequence number at the communication interface of the first node and the second node according to the second time when the first node sends the data packet, the first time when the second message is received, and the processing time.
In order to better understand the technical solutions of the present invention, the following detailed descriptions of the technical solutions of the present invention are provided with the accompanying drawings and the specific embodiments, and it should be understood that the specific features in the embodiments and the examples of the present invention are the detailed descriptions of the technical solutions of the present invention, and are not limitations of the technical solutions of the present invention, and the technical features in the embodiments and the examples of the present invention may be combined with each other without conflict.
Referring to fig. 1, an embodiment of the present invention provides a transmission delay statistical method, which is applied to a first node where a packet data protocol convergence protocol PDCP layer is located, and the processing procedure of the method is as follows.
Step 101: sending a first message to a second node where a radio link control protocol (RLC) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report processing delay of the data packet with the specified sequence number at the second node and the air interface.
Step 102: receiving a second message which carries processing delay and is returned by the second node based on the first message, and recording first time for receiving the second message; wherein the second message is used to indicate that the data packet with the specified sequence number has been successfully transmitted.
Step 103: and calculating the first time delay of the data packet with the specified sequence number transmitted on the communication interface between the first node and the second node based on the second time, the first time and the processing time delay of the data packet with the specified sequence number transmitted by the first node.
Specifically, the first time delay of the data packet with the specified sequence number on the communication interface between the first node and the second node is calculated by adopting the following method:
firstly, performing difference operation on first time and second time to obtain second time delay;
secondly, performing difference operation on the second time delay and the processing time delay to obtain a difference operation result;
and finally, performing division operation on the difference operation result and 2 to obtain a first time delay.
For example, when the first node sends the data packet with the sequence number of 1 to the second node, the sending time of the data packet with the sequence number of 1 is recorded as the second time, and the first message is sent to the second node at the same time, where the first message carries the indication information, so that the second node can report the processing delay of the data packet with the sequence number of 1 at the second node and the air interface.
And the second node detects the sending state of the data packet with the sequence number of 1 on the air interface according to the indication information in the first message, and records the processing delay of the data packet with the sequence number of 1 on the second node and the air interface when detecting that the sending state is successful sending. And carrying the processing delay in a second message for indicating that the data packet with the sequence number of 1 is successfully sent, and sending the second message to the first node.
And after receiving the second message, the first node records the receiving time of the second message, records the receiving time as the first time, and acquires the processing delay of the data packet with the sequence number of 1 in the second node and the air interface from the second message. Then, calculating a first time delay of the data packet with the sequence number of 1 transmitted on the communication interface between the first node and the second node: the first time-the second time is the second time delay, (the second time delay-the processing time delay)/2 is the first time delay.
Optionally, after calculating a first delay of the data packet with the specified sequence number on the communication interface between the first node and the second node, the first delay may also be sent to the operation, maintenance and management OAM, where the first delay is used to evaluate the performance of the communication interface. Therefore, the OAM carries out performance evaluation on the communication interface between the first node and the second node, namely the F1 interface according to the first time delay, and then reasonably schedules the transmission of the service data.
Optionally, the first message is USER plane message downlink USER DATA (DL USER DATA).
Wherein, the indication information is carried in the spare information element of the downlink user data message.
Please refer to table 1, the definition of the indication information provided by the embodiment of the present invention in the DL USER DATA.
TABLE 1
In order to make the above-mentioned solutions fully understandable to those skilled in the art, a specific example will be described below.
Referring to fig. 2, it is a flowchart of an interaction between a first node where a PDCP layer is located and a second node where an RLC layer is located, where the first node sends a data packet with a sequence number N (denoted as data packet N) to the second node, and now the first node needs to count transmission delay (i.e., first delay) consumed by the data packet N on a communication interface between the first node and the second node.
Step 201: the first node sends a first message to the second node.
The first message carries indication information so that the second node can report the processing delay of the data packet N at the second node and the air interface.
Step 202, the second node detects the sending state of the data packet N on the air interface according to the indication information.
And after receiving the first message, the second node detects the sending state of the data packet N with the sequence number N on the air interface according to the indication information carried in the second message.
Step 203, when the sending state of the data packet N at the air interface is successful sending, recording the processing delay of the data packet N at the second node and the air interface, and writing the processing delay into the second message.
For how to determine that the sending state of the data packet N is successfully sent and how to process the processing delay of the data packet N at the second node and the air interface, please refer to the description of the method portion at the second node side, which is not described herein again.
Step 204: the second node sends a second message to the first node.
And the second message carries the processing delay of the data packet N at the second node and the air interface.
Step 205: and the first node receives the second message, records the first time of receiving the second message, and calculates the first time delay according to the second time, the first time and the processing time delay of the first node for sending the data packet N.
The first time delay calculated by the first node is as follows:
first time delay (first time-second time-processing time delay)/2.
After the first node calculates the first time delay, the first time delay may be sent to the OAM, so that the OAM may evaluate the performance of the communication interface between the first node and the second node, and facilitate subsequent service scheduling.
It should be noted that, in the CU/DU separation architecture, the PDCP layer is located in the CU, the RLC layer is located in the DU, and the CU and the DU communicate with each other through an F1 interface, so the communication interface between the first node and the second node is an F1 interface.
After the description of the statistical method of the transmission delay of the F1 interface at the first node side, the description will be made from the second node side where the RLC layer is located.
Referring to fig. 3, based on the same inventive concept, an embodiment of the present invention provides a transmission delay statistical method applied to a second node where a RLC layer is located, where the method includes:
step 301: receiving a first message sent by a first node where a packet data protocol convergence protocol (PDCP) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report processing delay of the data packet with the specified sequence number at the second node and the air interface.
Step 302: and detecting the sending state of the data packet with the specified sequence number on the air interface based on the indication information.
Step 303: and when the sending state is successful sending, sending the processing delay of the data packet with the specified sequence number at the second node and the air interface to the first node through the second message, so that the first node calculates the first delay of the data packet with the specified sequence number transmitted on the communication interface of the first node and the second node according to the first time for receiving the second message, the second time for sending the data packet with the specified sequence number by the first node and the processing delay.
Specifically, detecting the sending state of the data packet with the specified sequence number on the air interface is implemented by the following method:
after a data packet with a specified serial number is sent to a user terminal, whether a response message returned by the user terminal is received or not is detected; and if the response message is received, determining that the sending state is successful sending.
When the second node detects that the data packet with the specified serial number is successfully sent at an air interface, the corresponding sending time is recorded; and the difference between the sending time and the receiving time is used as the processing delay of the data packet with the specified sequence number at the second node and the air interface.
The second node writes the processing delay into the second message and sends the second message to the first node, so that the first node can calculate the transmission delay (namely the first delay) consumed by the data packet with the specified sequence number on the communication interface between the first node and the second node according to the first time when the first node receives the second message and the second time when the data packet with the specified sequence number is sent and the processing delay.
Specifically, the first time delay is (first time-second time-processing time delay)/2.
Optionally, the second message is a user plane message downlink data transmission STATUS (DL DATA DELIVERY STATUS).
Optionally, the processing delay is recorded in the new information element of DL DATA DELIVERY STATUS.
Optionally, the spare information element of DL DATA DELIVERY STATUS is used to indicate whether a processing delay is carried.
Please refer to table 2, the definition of the processing latency and whether or not it is carried in the second message DL DATA delay.
TABLE 2
In the statistical method of the transmission delay at the first node side, the interaction process between the first node and the second node has been exemplified, and for avoiding repetition, details are not repeated here.
Based on the same inventive concept, an embodiment of the present invention provides a server for transmission delay statistics, where a specific implementation of a method for statistics of transmission delay of the server may refer to the description of the first node side method embodiment, and repeated details are not described again, please refer to fig. 4, where the server is a first server where a packet data protocol convergence protocol PDCP layer is located, and the first server includes:
a sending unit 401, configured to send a first message to a second server where a radio link control protocol RLC layer is located; the first message carries indication information, and the indication information is used for enabling the second server to report processing delay of a data packet with a specified sequence number in the second server and an air interface;
a receiving unit 402, configured to receive a second message carrying the processing delay, which is returned by the second server based on the first message, and record a first time for receiving the second message; wherein the second message is used for indicating that the data packet with the specified sequence number is successfully transmitted;
a calculating unit 403, configured to calculate a first delay of transmission of the data packet with the specified sequence number on a communication interface between the first server and the second server based on the second time when the first server sends the data packet with the specified sequence number, the first time, and the processing delay.
Optionally, the calculating unit 403 is specifically configured to:
performing difference operation on the first time and the second time to obtain a second time delay;
performing difference operation on the second time delay and the processing time delay to obtain a difference operation result;
and carrying out division operation on the difference operation result and 2 to obtain the first time delay.
Optionally, the sending unit 401 is further configured to:
and sending the first time delay to operation, maintenance and management (OAM), wherein the first time delay is used for evaluating the performance of the communication interface.
Optionally, the first message is USER plane message downlink USER DATA DL USER DATA.
Optionally, the indication information is carried in a spare information element of the downlink user data message.
Based on the same inventive concept, an embodiment of the present invention provides a server, where a specific implementation of a method for counting transmission delay of the server may refer to the description of the second node side method embodiment, and repeated parts are not repeated, please refer to fig. 5, where the server is a second server where a RLC layer is located, where the second server includes:
a receiving unit 501, configured to receive a first message sent by a first server where a packet data protocol convergence protocol PDCP layer is located; the first message carries indication information, and the indication information is used for enabling the second server to report processing delay of a data packet with a specified sequence number in the second server and an air interface;
a detecting unit 502, configured to detect, based on the indication information, a sending state of the data packet with the specified sequence number on an air interface;
a sending unit 503, configured to send, when the sending status is successful sending, the processing delay of the data packet with the specified sequence number to the second server and the air interface through a second message, so that the first server calculates, according to a first time for receiving the second message, a second time for sending the data packet with the specified sequence number by the first server, and the processing delay, a first delay for transmitting the data packet with the specified sequence number on a communication interface between the first server and the second server.
Optionally, the detecting unit 502 is specifically configured to:
after the data packet with the assigned serial number is sent to a user terminal, whether a response message returned by the user terminal is received or not is detected;
and if the response message is received, determining that the sending state is successful sending.
Optionally, the processing delay is a difference between the sending time of the data packet with the specified sequence number successfully sent over the air interface and the receiving time of the data packet with the specified sequence number received by the second server.
Optionally, the second message is a downlink DATA transmission status DL DATA delay of the user plane message.
Optionally, the processing delay is recorded in a newly added information element of the downlink data transmission status message.
Optionally, the standby information element of the downlink data transmission status message is used to indicate whether the processing delay is carried.
As shown in fig. 6, a server provided in an embodiment of the present invention is a first server where a packet data protocol convergence protocol PDCP layer is located, and includes: a processor 601, a memory 602, and a transceiver 603;
the processor 601 is configured to read the program in the memory 602 and execute the following processes:
sending a first message to a second node where a radio link control protocol (RLC) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report processing delay of a data packet with a specified sequence number at the second node and an air interface;
receiving a second message which carries the processing delay and is returned by the second node based on the first message, and recording first time for receiving the second message; wherein the second message is used for indicating that the data packet with the specified sequence number is successfully transmitted;
and calculating a first time delay of the data packet with the specified sequence number transmitted on a communication interface between the first node and the second node based on the second time when the first node sends the data packet with the specified sequence number, the first time and the processing time delay.
Optionally, the processor 601 is specifically configured to:
performing difference operation on the first time and the second time to obtain a second time delay;
performing difference operation on the second time delay and the processing time delay to obtain a difference operation result;
and carrying out division operation on the difference operation result and 2 to obtain the first time delay.
Optionally, the processor 601 is further configured to:
and sending the first time delay to operation, maintenance and management (OAM), wherein the first time delay is used for evaluating the performance of the communication interface.
Optionally, the first message is USER plane message downlink USER DATA DL USER DATA.
Optionally, the indication information is carried in a spare information element of the downlink user data message.
The processor 601 is responsible for managing the bus architecture and general processing, and the memory 602 may store data used by the processor 601 in performing operations. The transceiver 603 is used for receiving and transmitting data under the control of the processor 601.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors 601, represented by processor 601, and various circuits of memory 602, represented by memory 602, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 601 is responsible for managing the bus architecture and general processing, and the memory 602 may store data used by the processor 601 in performing operations.
The process disclosed by the embodiment of the invention can be applied to the processor 601 or implemented by the processor 601. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 601. The processor 601 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor 601. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 602, and the processor 601 reads the information in the memory 602 and completes the steps of the signal processing flow in combination with the hardware thereof.
As shown in fig. 7, a server provided in an embodiment of the present invention is a second server where a radio link control protocol RLC layer is located, and includes: a processor 701, a memory 702, and a transceiver 703;
the processor 701 is configured to read a program in the memory 702 and execute the following processes:
receiving a first message sent by a first node where a packet data protocol convergence protocol (PDCP) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report the processing delay of the data packet with the specified sequence number at the second node and an air interface;
detecting the sending state of the data packet with the specified sequence number at an air interface based on the indication information;
and when the sending state is successful sending, sending the processing delay of the data packet with the specified sequence number on the second node and the air interface to the first node through a second message, so that the first node calculates the first delay of the data packet with the specified sequence number transmitted on the communication interface of the first node and the second node according to the first time for receiving the second message, the second time for sending the data packet with the specified sequence number by the first node and the processing delay.
Optionally, the processor 701 is specifically configured to:
after the data packet with the assigned serial number is sent to a user terminal, whether a response message returned by the user terminal is received or not is detected;
and if the response message is received, determining that the sending state is successful sending.
Optionally, the processing delay is a difference between the sending time of the data packet with the specified sequence number successfully sent over the air interface and the receiving time of the data packet with the specified sequence number received by the second node.
Optionally, the second message is a downlink DATA transmission status DL DATA delay of the user plane message.
Optionally, the processing delay is recorded in a newly added information element of the downlink data transmission status message.
Optionally, the standby information element of the downlink data transmission status message is used to indicate whether the processing delay is carried.
The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store 702 data used by the processor 701 in performing operations. The transceiver 703 is used for receiving and transmitting data under the control of the processor 701.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors 701, represented by processor 701, and various circuits of memory 702, represented by memory 702, being linked together in particular. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 701 in performing operations.
The process disclosed in the embodiments of the present invention may be applied to the processor 701, or implemented by the processor 701. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor 701. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and completes the steps of the signal processing flow in combination with the hardware thereof.
Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium, including:
the computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the statistical method of transmission delay on one node side or a second node side as described above.
In the embodiment provided by the invention, a first node where a packet data protocol convergence protocol PDCP layer is located sends a first message to a second node where a radio link control protocol RLC layer is located, wherein the first message carries indication information, the indication information is used for enabling the second node to report the processing delay of a data packet with a specified sequence number at the second node and an air interface, and after the first node receives a second message which carries the processing delay and is returned by the second node based on the first message, the first time for receiving the second message is recorded, so that the first node calculates the first delay of the transmission of the data packet with the specified sequence number on a communication interface between the first node and the second node according to the first time, the second time and the processing delay; wherein the second message is used to indicate that the data packet with the specified sequence number has been successfully transmitted. Because the first node can accurately know the processing time (namely the processing time delay) of the data packet at the second node and the air interface through the method, unlike the prior art that the processing time of the data packet at the second node and the air interface cannot be known, the method provided by the embodiment of the invention can accurately calculate the transmission time delay of the data packet with the specified sequence number at the communication interface of the first node and the second node according to the second time when the first node sends the data packet, the first time when the second message is received, and the processing time.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (25)
1. A statistical method of transmission delay is applied to a first node where a packet data protocol convergence protocol (PDCP) layer is located, and is characterized by comprising the following steps:
sending a first message to a second node where a radio link control protocol (RLC) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report processing delay of a data packet with a specified sequence number at the second node and an air interface;
receiving a second message which carries the processing delay and is returned by the second node based on the first message, and recording first time for receiving the second message; wherein the second message is used for indicating that the data packet with the specified sequence number is successfully transmitted;
and calculating a first time delay of the data packet with the specified sequence number transmitted on a communication interface between the first node and the second node based on the second time when the first node sends the data packet with the specified sequence number, the first time and the processing time delay.
2. The method of claim 1, wherein calculating a first latency of the packet of the specified sequence number over a communication interface of the first node and the second node comprises:
performing difference operation on the first time and the second time to obtain a second time delay;
performing difference operation on the second time delay and the processing time delay to obtain a difference operation result;
and carrying out division operation on the difference operation result and 2 to obtain the first time delay.
3. The method of claim 1, wherein calculating the first delay of the packet of the specified sequence number over the communication interface of the first node and the second node further comprises:
and sending the first time delay to operation, maintenance and management (OAM), wherein the first time delay is used for evaluating the performance of the communication interface.
4. A method according to any of claims 1-3, wherein said first message is a USER plane message downlink USER DATA, DL USER DATA.
5. The method of claim 4, wherein the indication information is carried in a spare information element of the downstream user data message.
6. A statistical method of transmission delay is applied to a second node where a radio link control protocol (RLC) layer is located, and is characterized by comprising the following steps:
receiving a first message sent by a first node where a packet data protocol convergence protocol (PDCP) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report the processing delay of the data packet with the specified sequence number at the second node and an air interface;
detecting the sending state of the data packet with the specified sequence number at an air interface based on the indication information;
and when the sending state is successful sending, sending the processing delay of the data packet with the specified sequence number on the second node and the air interface to the first node through a second message, so that the first node calculates the first delay of the data packet with the specified sequence number transmitted on the communication interface of the first node and the second node according to the first time for receiving the second message, the second time for sending the data packet with the specified sequence number by the first node and the processing delay.
7. The method of claim 6, wherein detecting the transmission status of the data packet with the specified sequence number over an air interface comprises:
after the data packet with the assigned serial number is sent to a user terminal, whether a response message returned by the user terminal is received or not is detected;
and if the response message is received, determining that the sending state is successful sending.
8. The method of claim 6, wherein the processing delay is a difference between a transmission time of the data packet with the specified sequence number successfully transmitted over the air interface and a reception time of the data packet with the specified sequence number received by the second node.
9. The method of any of claims 6-8, wherein the second message is a user plane message downstream data transfer STATUS DL DATA DELIVERY STATUS.
10. The method of claim 9, wherein the processing delay is recorded in an added information element of the downlink data transmission status message.
11. The method of claim 10, wherein a spare information element of the downlink data transmission status message is used to indicate whether the processing delay is carried.
12. A server, the server being a first server where a packet data protocol convergence protocol PDCP layer is located, comprising:
a sending unit, configured to send a first message to a second node where a radio link control protocol RLC layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report processing delay of a data packet with a specified sequence number at the second node and an air interface;
a receiving unit, configured to receive a second message carrying the processing delay, which is returned by the second node based on the first message, and record a first time for receiving the second message; wherein the second message is used for indicating that the data packet with the specified sequence number is successfully transmitted;
a calculating unit, configured to calculate, based on the second time when the first node sends the data packet with the specified sequence number, the first time, and the processing delay, a first delay for transmitting the data packet with the specified sequence number on a communication interface between the first node and the second node.
13. A server, the server being a second server in which a radio link control protocol RLC layer is located, comprising:
a receiving unit, configured to receive a first message sent by a first server where a packet data protocol convergence protocol PDCP layer is located; the first message carries indication information, and the indication information is used for enabling the second server to report processing delay of a data packet with a specified sequence number in the second server and an air interface;
a detection unit, configured to detect, based on the indication information, a sending state of the data packet with the specified sequence number at an air interface;
and a sending unit, configured to send, when the sending status is successful sending, the processing delay of the data packet with the specified sequence number to the first server through a second message, so that the first server calculates, according to a first time for receiving the second message, a second time for sending the data packet with the specified sequence number by the first server, and the processing delay, a first delay for transmitting the data packet with the specified sequence number on a communication interface between the first server and the second server.
14. A server, the server being a first server where a packet data protocol convergence protocol PDCP layer is located, comprising: a processor, a memory, and a transceiver;
the processor is used for reading the program in the memory and executing the following processes:
sending a first message to a second node where a radio link control protocol (RLC) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report processing delay of a data packet with a specified sequence number at the second node and an air interface;
receiving a second message which carries the processing delay and is returned by the second node based on the first message, and recording first time for receiving the second message; wherein the second message is used for indicating that the data packet with the specified sequence number is successfully transmitted;
and calculating a first time delay of the data packet with the specified sequence number transmitted on a communication interface between the first node and the second node based on the second time when the first node sends the data packet with the specified sequence number, the first time and the processing time delay.
15. The server according to claim 14, wherein the processor is specifically configured to:
performing difference operation on the first time and the second time to obtain a second time delay;
performing difference operation on the second time delay and the processing time delay to obtain a difference operation result;
and carrying out division operation on the difference operation result and 2 to obtain the first time delay.
16. The server of claim 14, wherein the processor is further configured to:
and sending the first time delay to operation, maintenance and management (OAM), wherein the first time delay is used for evaluating the performance of the communication interface.
17. A server according to any of claims 14-16, wherein said first message is a USER plane message downlink USER DATA, DL USER DATA.
18. The server of claim 17, wherein the indication information is carried in a spare information element of the downstream user data message.
19. A server, the server being a second server in which a radio link control protocol RLC layer is located, comprising: a processor, a memory, and a transceiver;
the processor is used for reading the program in the memory and executing the following processes:
receiving a first message sent by a first node where a packet data protocol convergence protocol (PDCP) layer is located; the first message carries indication information, and the indication information is used for enabling the second node to report the processing delay of the data packet with the specified sequence number at the second node and an air interface;
detecting the sending state of the data packet with the specified sequence number at an air interface based on the indication information;
and when the sending state is successful sending, sending the processing delay of the data packet with the specified sequence number on the second node and the air interface to the first node through a second message, so that the first node calculates the first delay of the data packet with the specified sequence number transmitted on the communication interface of the first node and the second node according to the first time for receiving the second message, the second time for sending the data packet with the specified sequence number by the first node and the processing delay.
20. The server of claim 19, wherein the processor is specifically configured to:
after the data packet with the assigned serial number is sent to a user terminal, whether a response message returned by the user terminal is received or not is detected;
and if the response message is received, determining that the sending state is successful sending.
21. The server according to claim 19, wherein the processing delay is a difference between a transmission time when the data packet with the specified sequence number is successfully transmitted over the air interface and a reception time when the data packet with the specified sequence number is received by the second node.
22. The server according to any of claims 19-21, wherein the second message is a user plane message downstream data transfer STATUS DL DATA DELIVERY STATUS.
23. The server according to claim 22, wherein the processing delay is recorded in an additional information element of the downlink data transmission status message.
24. The server according to claim 23, wherein the backup information element of the downstream data transmission status message is used to indicate whether the processing delay is carried.
25. A computer-readable storage medium characterized by:
the computer readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-11.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114189298A (en) * | 2021-10-22 | 2022-03-15 | 新华三大数据技术有限公司 | Wireless network system and method for counting average time delay |
| CN114641026A (en) * | 2022-02-17 | 2022-06-17 | 成都中科微信息技术研究院有限公司 | Method for improving quality of service (QoS) monitoring precision of NG-RAN side in NR system |
-
2019
- 2019-03-29 CN CN201910250249.0A patent/CN111757371B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| ZTE: "《3GPP TSG RAN WG3 NR#103，R3-190272，User plane measurements for RAN-centric data collection》", 15 February 2019 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114189298A (en) * | 2021-10-22 | 2022-03-15 | 新华三大数据技术有限公司 | Wireless network system and method for counting average time delay |
| CN114189298B (en) * | 2021-10-22 | 2024-02-09 | 新华三大数据技术有限公司 | Wireless network system and method for counting average time delay thereof |
| CN114641026A (en) * | 2022-02-17 | 2022-06-17 | 成都中科微信息技术研究院有限公司 | Method for improving quality of service (QoS) monitoring precision of NG-RAN side in NR system |
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