CN110661592A - Signaling transmission method and system, centralized unit, distribution unit and storage medium - Google Patents

Signaling transmission method and system, centralized unit, distribution unit and storage medium Download PDF

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Publication number
CN110661592A
CN110661592A CN201810692968.3A CN201810692968A CN110661592A CN 110661592 A CN110661592 A CN 110661592A CN 201810692968 A CN201810692968 A CN 201810692968A CN 110661592 A CN110661592 A CN 110661592A
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signaling
sctp
transmitted
stream information
service
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CN110661592B (en
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夏鹏
张婷
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a signaling transmission method and a system, a centralized unit, a distribution unit and a computer readable storage medium, wherein the method comprises the following steps: determining the service type of a signaling to be transmitted and Stream Control Transmission Protocol (SCTP) stream information corresponding to the signaling to be transmitted; and transmitting the SCTP message carrying the signaling to be transmitted to a Distribution Unit (DU) according to the SCTP stream information. The embodiment of the invention distinguishes F1 signaling through SCTP stream information, and directly distributes F1 signaling to corresponding service processing; the message load is effectively shared, and the performance bottleneck generated when an F1 protocol layer processes signaling distribution in a centralized way is avoided; the F1 signaling transmission path is shortened, and the time delay is reduced.

Description

Signaling transmission method and system, centralized unit, distribution unit and storage medium
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a signaling transmission method and system, a centralized unit, a distributed unit and a computer readable storage medium.
Background
The 3GPP (3rd Generation Partnership Project) standard proposes a vertical architecture with CU-DU (Centralized Unit-Distributed Unit) separation for the same base station (gNB), and defines an inter-CU-DU interface as an F1 interface, where the signaling interface is F1-C and is carried by SCTP (Stream Control Transmission Protocol). F1 signaling is divided into three categories: interface management, UE (User Equipment/terminal) context management and RRC (Radio Resource Control) message transparent transmission, different types of signaling processing modules may be different, and corresponding processing flows may be deployed on different services.
Currently, the F1 transport protocol only defines common procedures and UE-specific procedures. For different types of UE-level signaling, the interface modules at both ends of the CU-DU need to identify a specific signaling type after parsing the SCTP packet, and forward the signaling to a corresponding service (or module) for processing, which results in an extended transmission path of the F1 signaling and a performance bottleneck of a single point.
Disclosure of Invention
In view of the above, an object of the embodiments of the present invention is to provide a signaling transmission method and system, a central unit, a distribution unit, and a computer-readable storage medium, so as to solve the problem that the F1 signaling path between CU-DUs is lengthened, resulting in a single-point performance bottleneck.
The technical scheme adopted by the embodiment of the invention for solving the technical problems is as follows:
according to an aspect of the embodiments of the present invention, there is provided a signaling transmission method, which is used in a central unit CU, the method including:
determining the service type of a signaling to be transmitted and Stream Control Transmission Protocol (SCTP) stream information corresponding to the signaling to be transmitted;
and transmitting the SCTP message carrying the signaling to be transmitted to a Distribution Unit (DU) according to the SCTP stream information.
According to another aspect of the embodiments of the present invention, there is provided a centralized unit CU, the CU including a memory, a processor, and a signaling program stored in the memory and executable on the processor, the signaling program when executed by the processor implementing the steps of the signaling method described above.
According to another aspect of the embodiments of the present invention, there is provided a signaling transmission method, which is used in a DU, the method including:
determining the service type of a signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted;
and transmitting the SCTP message carrying the signaling to be transmitted to the CU according to the SCTP stream information.
According to another aspect of the embodiments of the present invention, there is provided a distribution unit DU, where the DU includes a memory, a processor, and a signaling transmission program stored in the memory and executable on the processor, and the signaling transmission program, when executed by the processor, implements the steps of the signaling transmission method described above.
According to another aspect of the embodiments of the present invention, there is provided a signaling transmission method, including:
the CU determines the service type of the signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to a DU (digital channel Unit) according to the SCTP stream information;
the DU receives the SCTP message transmitted by the CU, and determines the SCTP stream information used by the SCTP message transmitted by the CU; sending a signaling carried by the SCTP message transmitted by the CU to a service corresponding to the used SCTP stream information for processing; or
The method comprises the steps that DU determines the service type of a signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to the CU according to the SCTP stream information;
the CU receives the SCTP message transmitted by the DU, and determines the SCTP stream information used by the SCTP message transmitted by the DU; and sending the signaling carried by the SCTP message transmitted by the DU to the service corresponding to the used SCTP stream information for processing.
According to another aspect of the embodiments of the present invention, there is provided a signaling transmission system, including a CU and a DU;
the CU is used for determining the service type of the signaling to be transmitted and the SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to the DU according to the SCTP stream information;
the DU is used for receiving the SCTP message transmitted by the CU and determining the SCTP stream information used by the SCTP message transmitted by the CU; sending a signaling carried by the SCTP message transmitted by the CU to a service corresponding to the used SCTP stream information for processing; or
The DU is used for determining the service type of the signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to the CU according to the SCTP stream information;
the CU is used for receiving the SCTP message transmitted by the DU and determining the SCTP stream information used by the SCTP message transmitted by the DU; and sending the signaling carried by the SCTP message transmitted by the DU to the service corresponding to the used SCTP stream information for processing.
According to another aspect of the embodiments of the present invention, there is provided a computer-readable storage medium, on which a signaling transmission program is stored, and the signaling transmission program, when executed by a processor, implements the steps of the signaling transmission method described above.
The signaling transmission method, the signaling transmission system, the centralized unit, the distribution unit and the computer-readable storage medium distinguish F1 signaling through SCTP stream information, and directly distribute the F1 signaling to corresponding service processing; the message load is effectively shared, and the performance bottleneck generated when an F1 protocol layer processes signaling distribution in a centralized way is avoided; the F1 signaling transmission path is shortened, and the time delay is reduced.
Drawings
Fig. 1 is a schematic flowchart of a signaling transmission method according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a CU structure according to a second embodiment of the present invention;
fig. 3 is a flowchart illustrating a signaling transmission method according to a third embodiment of the present invention;
FIG. 4 is a diagram illustrating a DU structure according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a signaling transmission system according to a sixth embodiment of the present invention;
fig. 6 is a schematic diagram of the inter-CU-DU F1 signaling structure according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
First embodiment
As shown in fig. 1, a first embodiment of the present invention provides a signaling transmission method, which is used in a CU, and includes:
step S11: determining the service type of the signaling to be transmitted and Stream Control Transmission Protocol (SCTP) stream information corresponding to the signaling to be transmitted.
In this embodiment, the service types of the signaling to be transmitted include, but are not limited to, an F1 interface management service, a UE context management service, an RRC message transparent transmission service, and the like. The F1 interface management service is responsible for establishing and updating an F1AP (application protocol) connection; the CU includes an SDAP (Service Data attachment Protocol) layer and a PDCP (Packet Data Convergence Protocol) layer, and the DU includes an RLC (Radio Link Control) layer, an MAC (Medium Access Control) layer, and a PHY (Physical) layer.
In this embodiment, the SCTP stream information may configure corresponding stream numbers in the transmission link configurations of the CU and the DU according to the service types on the CU/DU, and the SCTP stream numbers at both ends of the F1 interface need to be greater than or equal to the assigned service numbers.
In an embodiment, before determining the service type of the signaling to be transmitted and the SCTP stream information corresponding to the signaling to be transmitted, the method further includes:
under the condition that the SCTP establishment at the two ends of the CU and the DU is successful, determining the total number of SCTP streams at the two ends of the CU and the DU;
and determining the service types of different signaling and SCTP stream information corresponding to the different signaling through initial signaling interaction negotiation.
Specifically, under the condition that the SCTP establishment at the CU and the DU ends is successful, the total number of SCTP streams supported by the CU/DU ends is negotiated according to the maximum stream number configured at the CU/DU ends.
F1 interface management service initiates F1AP establishing flow, selects any SCTP stream as special stream used by F1 interface management service, sends it to opposite terminal through SCTP link, after the F1 interface management service of opposite terminal receives it, identifies the special stream used by sending terminal, replies F1AP with the special stream to establish response, and saves the special stream information as the following F1 interface management signaling.
In the initial establishment process of F1AP, the F1 interface management service needs to receive all SCTP dedicated streams, and after receiving the first message, only processes the corresponding dedicated stream, and notifies the transport interface service. The F1 interface management service between CUs/DUs can also use the default SCTP stream in a agreed manner, reducing the negotiation process, e.g., using stream No. 0 on both sides as a common stream.
The F1 interface management service reserves free private flows for other services and is responsible for allocation according to the private flow used by itself. When other services send inter-CU/DU messages, the SCTP link is first selected by the F1 interface management service, at which time the F1 interface management service allocates SCTP-specific streams for the service. The allocation algorithm may adopt an agreed manner, or alternatively, the number of the dedicated streams used by the two ends and the number of the dedicated streams used by the other services are confirmed according to the first message. The CU/DU services transmit and receive F1 signaling using their SCTP-specific streams, and distinguish signaling focused on by their services.
Step S12: and transmitting the SCTP message carrying the signaling to be transmitted to a Distribution Unit (DU) according to the SCTP stream information.
In an embodiment, after transmitting the SCTP packet carrying the signaling to be transmitted to the distribution unit DU according to the SCTP stream information, the method further includes:
receiving an SCTP message transmitted by a DU, and determining SCTP stream information used by the SCTP message transmitted by the DU;
and sending the signaling carried by the SCTP message transmitted by the DU to the service corresponding to the used SCTP stream information for processing.
To better illustrate the signaling transmission procedure of the present embodiment, the following description is made with reference to fig. 6:
as shown in fig. 6, CU and DU include F1 interface management service, UE context management service, and RRC message pass-through service, respectively, and both ends of the F1 interface include 3 SCTP streams, i.e., Stream0, Stream1, and Stream 2. After negotiation through initial signaling interaction, Stream0 is used as an SCTP private Stream of an F1 interface management service at both ends of the CU and DU, Stream1 is used as an SCTP private Stream of a UE context management service at both ends of the CU and DU, and Stream2 is used as an SCTP private Stream of an RRC message transparent transmission service on UEs at both ends of the CU and DU.
When the RRC message pass-through service on the CU sends F1 signaling, F1 signaling, SCTP link information, and SCTP stream information are passed in through the interface provided by the transport interface service on the CU. The transport interface service packages the signaling into SCTP packets, and transmits the SCTP packets to the DU using a corresponding Stream (i.e., Stream 2).
And the transmission interface service on the DU receives the SCTP message of the CU, analyzes the F1 signaling from the SCTP message, and sends the SCTP stream information used by the SCTP message to the corresponding RRC message transparent transmission service on the DU through the sending interface.
The signaling transmission process of the F1 interface management service and the UE context management service is similar to the above, and is not described herein again. It should be noted that if a subscription and publication mechanism is adopted between the transmission interface service and the upper layer service, each service only needs to subscribe to the stream information concerned by itself, and the transmission interface service only needs to publish the message according to the stream information.
According to the signaling transmission method, the F1 signaling is distinguished through the SCTP stream information, and the F1 signaling is directly distributed to the corresponding service processing; the message load is effectively shared, and the performance bottleneck generated when an F1 protocol layer processes signaling distribution in a centralized way is avoided; the F1 signaling transmission path is shortened, and the time delay is reduced.
Second embodiment
As shown in fig. 2, a second embodiment of the present invention provides a centralized unit CU, including: a memory 21, a processor 22 and a signaling transmission program stored on the memory 21 and operable on the processor 22, wherein the signaling transmission program is used for implementing the following steps of the signaling transmission method when executed by the processor 22:
determining the service type of a signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted;
and transmitting the SCTP message carrying the signaling to be transmitted to a Distribution Unit (DU) according to the SCTP stream information.
The signaling transmission program, when executed by the processor 22, is further configured to implement the steps of the signaling transmission method as follows:
under the condition that the SCTP establishment at the two ends of the CU and the DU is successful, determining the total number of SCTP streams at the two ends of the CU and the DU;
and determining the service types of different signaling and SCTP stream information corresponding to the different signaling through initial signaling interaction negotiation.
The signaling transmission program, when executed by the processor 22, is further configured to implement the steps of the signaling transmission method as follows:
receiving an SCTP message transmitted by a DU, and determining SCTP stream information used by the SCTP message transmitted by the DU;
and sending the signaling carried by the SCTP message transmitted by the DU to the service corresponding to the used SCTP stream information for processing.
The centralized unit of the embodiment of the invention distinguishes the F1 signaling through SCTP stream information and directly distributes the F1 signaling to corresponding service processing; the message load is effectively shared, and the performance bottleneck generated when an F1 protocol layer processes signaling distribution in a centralized way is avoided; the F1 signaling transmission path is shortened, and the time delay is reduced.
Third embodiment
As shown in fig. 3, a third embodiment of the present invention provides a signaling transmission method, where the method is used in a DU, and the method includes:
step S31: and determining the service type of the signaling to be transmitted and the SCTP stream information corresponding to the signaling to be transmitted.
In this embodiment, the service types of the signaling to be transmitted include, but are not limited to, an F1 interface management service, a UE context management service, an RRC message transparent transmission service, and the like. The F1 interface management service is responsible for establishing and updating the F1AP connection; and the RRC message transparent transmission service is responsible for processing UE-level air interface protocol messages, the CU comprises an SDAP layer and a PDCP layer, and the DU comprises an RLC layer, an MAC layer and a PHY layer.
In this embodiment, the SCTP stream information may configure corresponding stream numbers in the transmission link configurations of the CU and the DU according to the service types on the CU/DU, and the SCTP stream numbers at both ends of the F1 interface need to be greater than or equal to the assigned service numbers.
In an embodiment, before determining the service type of the signaling to be transmitted and the SCTP stream information corresponding to the signaling to be transmitted, the method further includes:
under the condition that the SCTP establishment at the two ends of the CU and the DU is successful, determining the total number of SCTP streams at the two ends of the CU and the DU;
and determining the service types of different signaling and SCTP stream information corresponding to the different signaling through initial signaling interaction negotiation.
Specifically, under the condition that the SCTP establishment at the CU and the DU ends is successful, the total number of SCTP streams supported by the CU/DU ends is negotiated according to the maximum stream number configured at the CU/DU ends.
F1 interface management service initiates F1AP establishing flow, selects any SCTP stream as special stream used by F1 interface management service, sends it to opposite terminal through SCTP link, after the F1 interface management service of opposite terminal receives it, identifies the special stream used by sending terminal, replies F1AP with the special stream to establish response, and saves the special stream information as the following F1 interface management signaling.
In the initial establishment process of F1AP, the F1 interface management service needs to receive all SCTP dedicated streams, and after receiving the first message, only processes the corresponding dedicated stream, and notifies the transport interface service. The F1 interface management service between CUs/DUs can also use the default SCTP stream in a agreed manner, reducing the negotiation process, e.g., using stream No. 0 on both sides as a common stream.
The F1 interface management service reserves free private flows for other services and is responsible for allocation according to the private flow used by itself. When other services send inter-CU/DU messages, the SCTP link is first selected by the F1 interface management service, at which time the F1 interface management service allocates SCTP-specific streams for the service. The allocation algorithm may adopt an agreed manner, or alternatively, the number of the dedicated streams used by the two ends and the number of the dedicated streams used by the other services are confirmed according to the first message. The CU/DU services transmit and receive F1 signaling using their SCTP-specific streams, and distinguish signaling focused on by their services.
Step S32: and transmitting the SCTP message carrying the signaling to be transmitted to the CU according to the SCTP stream information.
In an embodiment, after transmitting the SCTP packet carrying the signaling to be transmitted to the CU according to the SCTP stream information, the method further includes:
receiving an SCTP message transmitted by a CU, and determining SCTP stream information used by the SCTP message transmitted by the CU;
and sending the signaling carried by the SCTP message transmitted by the CU to the service corresponding to the used SCTP stream information for processing.
To better illustrate the signaling transmission procedure of the present embodiment, the following description is made with reference to fig. 6:
as shown in fig. 6, CU and DU include F1 interface management service, UE context management service, and RRC message pass-through service, respectively, and both ends of the F1 interface include 3 SCTP streams, i.e., Stream0, Stream1, and Stream 2. After negotiation through initial signaling interaction, Stream0 is used as an SCTP private Stream of an F1 interface management service at both ends of the CU and DU, Stream1 is used as an SCTP private Stream of a UE context management service at both ends of the CU and DU, and Stream2 is used as an SCTP private Stream of an RRC message transparent transmission service on UEs at both ends of the CU and DU.
When the RRC message pass-through service on the DU sends F1 signaling, the F1 signaling, SCTP link information, and SCTP stream information are passed in through the interface provided by the transport interface service on the DU. The transport interface service packages the signaling into SCTP packets and transmits the SCTP packets to the CU using the corresponding Stream (i.e., Stream 2).
And the transmission interface service on the CU receives the SCTP message of the DU, analyzes the F1 signaling from the SCTP message, and sends the SCTP stream information used by the SCTP message to the corresponding RRC message transparent transmission service on the CU through the sending interface.
The signaling transmission process of the F1 interface management service and the UE context management service is similar to the above, and is not described herein again. It should be noted that if a subscription and publication mechanism is adopted between the transmission interface service and the upper layer service, each service only needs to subscribe to the stream information concerned by itself, and the transmission interface service only needs to publish the message according to the stream information.
According to the signaling transmission method, the F1 signaling is distinguished through the SCTP stream information, and the F1 signaling is directly distributed to the corresponding service processing; the message load is effectively shared, and the performance bottleneck generated when an F1 protocol layer processes signaling distribution in a centralized way is avoided; the F1 signaling transmission path is shortened, and the time delay is reduced.
Fourth embodiment
As shown in fig. 4, a distribution unit DU according to a fourth embodiment of the present invention includes: a memory 41, a processor 42 and a signaling transmission program stored on the memory 41 and operable on the processor 42, wherein the signaling transmission program is used for implementing the following steps of the signaling transmission method when executed by the processor 42:
determining the service type of a signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted;
and transmitting the SCTP message carrying the signaling to be transmitted to the CU according to the SCTP stream information.
The signaling transmission program, when executed by the processor 42, is further configured to implement the steps of the signaling transmission method as follows:
under the condition that the SCTP establishment at the two ends of the CU and the DU is successful, determining the total number of SCTP streams at the two ends of the CU and the DU;
and determining the service types of different signaling and SCTP stream information corresponding to the different signaling through initial signaling interaction negotiation.
The signaling transmission program, when executed by the processor 42, is further configured to implement the steps of the signaling transmission method as follows:
receiving an SCTP message transmitted by a CU, and determining SCTP stream information used by the SCTP message transmitted by the CU;
and sending the signaling carried by the SCTP message transmitted by the CU to the service corresponding to the used SCTP stream information for processing.
The distribution unit of the embodiment of the invention distinguishes the F1 signaling through SCTP stream information and directly distributes the F1 signaling to corresponding service processing; the message load is effectively shared, and the performance bottleneck generated when an F1 protocol layer processes signaling distribution in a centralized way is avoided; the F1 signaling transmission path is shortened, and the time delay is reduced.
Fifth embodiment
A fifth embodiment of the present invention provides a signaling transmission method, where the method includes:
the CU determines the service type of the signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to a DU (digital channel Unit) according to the SCTP stream information;
the DU receives the SCTP message transmitted by the CU, and determines the SCTP stream information used by the SCTP message transmitted by the CU; sending a signaling carried by the SCTP message transmitted by the CU to a service corresponding to the used SCTP stream information for processing; or
The method comprises the steps that DU determines the service type of a signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to the CU according to the SCTP stream information;
the CU receives the SCTP message transmitted by the DU, and determines the SCTP stream information used by the SCTP message transmitted by the DU; and sending the signaling carried by the SCTP message transmitted by the DU to the service corresponding to the used SCTP stream information for processing.
According to the signaling transmission method, the F1 signaling is distinguished through the SCTP stream information, and the F1 signaling is directly distributed to the corresponding service processing; the message load is effectively shared, and the performance bottleneck generated when an F1 protocol layer processes signaling distribution in a centralized way is avoided; the F1 signaling transmission path is shortened, and the time delay is reduced.
Sixth embodiment
As shown in fig. 5, a sixth embodiment of the present invention provides a signaling transmission system, which is characterized in that the system includes CU51 and DU 52;
the CU51 is configured to determine a service type of a to-be-transmitted signaling and SCTP stream information corresponding to the to-be-transmitted signaling; transmitting the SCTP message carrying the signaling to be transmitted to the DU52 according to the SCTP stream information;
the DU52 is configured to receive the SCTP packet transmitted by the CU51, and determine SCTP stream information used by the SCTP packet transmitted by the CU 51; sending a signaling carried by the SCTP message transmitted by the CU51 to a service corresponding to the used SCTP stream information for processing; or
The DU52 is configured to determine a service type of a signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to the CU51 according to the SCTP stream information;
the CU51 is configured to receive the SCTP packet transmitted by the DU52, and determine SCTP stream information used by the SCTP packet transmitted by the DU 52; and sending the signaling carried by the SCTP packet transmitted by the DU52 to a service corresponding to the used SCTP stream information for processing.
The signaling transmission system of the embodiment of the invention distinguishes F1 signaling through SCTP stream information and directly distributes F1 signaling to corresponding service processing; the message load is effectively shared, and the performance bottleneck generated when an F1 protocol layer processes signaling distribution in a centralized way is avoided; the F1 signaling transmission path is shortened, and the time delay is reduced.
Seventh embodiment
A seventh embodiment of the present invention provides a computer-readable storage medium, which stores a signaling transmission program, wherein the signaling transmission program is used to implement the steps of the signaling transmission method according to the first embodiment when executed by a processor or the steps of the signaling transmission method according to the third embodiment when executed by a processor.
It should be noted that the computer-readable storage medium of this embodiment belongs to the same concept as the method of the first embodiment or the third embodiment, and specific implementation processes thereof are detailed in the method embodiment, and technical features in the method embodiment are applicable in this embodiment, which is not described herein again.
The computer-readable storage medium distinguishes F1 signaling through SCTP stream information, and directly distributes F1 signaling to corresponding service processing; the message load is effectively shared, and the performance bottleneck generated when an F1 protocol layer processes signaling distribution in a centralized way is avoided; the F1 signaling transmission path is shortened, and the time delay is reduced.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Any modifications, equivalents and improvements which may occur to those skilled in the art without departing from the scope and spirit of the present invention are intended to be within the scope of the claims.

Claims (11)

1. A signaling method for use in a central unit, CU, the method comprising:
determining the service type of a signaling to be transmitted and Stream Control Transmission Protocol (SCTP) stream information corresponding to the signaling to be transmitted;
and transmitting the SCTP message carrying the signaling to be transmitted to a Distribution Unit (DU) according to the SCTP stream information.
2. The method according to claim 1, wherein the determining the service type of the signaling to be transmitted and the SCTP stream information corresponding to the signaling to be transmitted further comprises:
under the condition that the SCTP establishment at the two ends of the CU and the DU is successful, determining the total number of SCTP streams at the two ends of the CU and the DU;
and determining the service types of different signaling and SCTP stream information corresponding to the different signaling through initial signaling interaction negotiation.
3. The method according to claim 1, wherein after transmitting the SCTP packet carrying the signaling to be transmitted to the distribution unit DU according to the SCTP stream information, the method further comprises:
receiving an SCTP message transmitted by a DU, and determining SCTP stream information used by the SCTP message transmitted by the DU;
and sending the signaling carried by the SCTP message transmitted by the DU to the service corresponding to the used SCTP stream information for processing.
4. A central unit, CU, comprising a memory, a processor and a signaling program stored on the memory and executable on the processor, the signaling program when executed by the processor implementing the steps of the signaling method according to any one of claims 1 to 3.
5. A signaling transmission method, which is used in a DU, the method comprising:
determining the service type of a signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted;
and transmitting the SCTP message carrying the signaling to be transmitted to the CU according to the SCTP stream information.
6. The method according to claim 5, wherein the determining the service type of the signaling to be transmitted and the SCTP stream information corresponding to the signaling to be transmitted further comprises:
under the condition that the SCTP establishment at the two ends of the CU and the DU is successful, determining the total number of SCTP streams at the two ends of the CU and the DU;
and determining the service types of different signaling and SCTP stream information corresponding to the different signaling through initial signaling interaction negotiation.
7. The method according to claim 5, wherein after transmitting the SCTP packet carrying the signaling to be transmitted to the CU according to the SCTP stream information, the method further comprises:
receiving an SCTP message transmitted by a CU, and determining SCTP stream information used by the SCTP message transmitted by the CU;
and sending the signaling carried by the SCTP message transmitted by the CU to the service corresponding to the used SCTP stream information for processing.
8. A distribution unit, DU, comprising a memory, a processor and a signalling program stored on the memory and executable on the processor, the signalling program when executed by the processor implementing the steps of the signalling method as claimed in any of the claims 5 to 7.
9. A method of signaling transmission, the method comprising:
the CU determines the service type of the signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to a DU (digital channel Unit) according to the SCTP stream information;
the DU receives the SCTP message transmitted by the CU, and determines the SCTP stream information used by the SCTP message transmitted by the CU; sending a signaling carried by the SCTP message transmitted by the CU to a service corresponding to the used SCTP stream information for processing; or
The method comprises the steps that DU determines the service type of a signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to the CU according to the SCTP stream information;
the CU receives the SCTP message transmitted by the DU, and determines the SCTP stream information used by the SCTP message transmitted by the DU; and sending the signaling carried by the SCTP message transmitted by the DU to the service corresponding to the used SCTP stream information for processing.
10. A signalling transmission system, characterized in that said system comprises CUs and DUs;
the CU is used for determining the service type of the signaling to be transmitted and the SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to the DU according to the SCTP stream information;
the DU is used for receiving the SCTP message transmitted by the CU and determining the SCTP stream information used by the SCTP message transmitted by the CU; sending a signaling carried by the SCTP message transmitted by the CU to a service corresponding to the used SCTP stream information for processing; or
The DU is used for determining the service type of the signaling to be transmitted and SCTP stream information corresponding to the signaling to be transmitted; transmitting the SCTP message carrying the signaling to be transmitted to the CU according to the SCTP stream information;
the CU is used for receiving the SCTP message transmitted by the DU and determining the SCTP stream information used by the SCTP message transmitted by the DU; and sending the signaling carried by the SCTP message transmitted by the DU to the service corresponding to the used SCTP stream information for processing.
11. A computer-readable storage medium, characterized in that a signaling transmission program is stored on the computer-readable storage medium, which when executed by a processor implements the steps of the signaling transmission method according to any one of claims 1 to 3 or which when executed by the processor implements the steps of the signaling transmission method according to any one of claims 5 to 7.
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