CN117528841A

CN117528841A - Information transmission method, device, access network equipment and wireless access network controller

Info

Publication number: CN117528841A
Application number: CN202210898523.7A
Authority: CN
Inventors: 孙慧晴; 罗张宇
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2024-02-06
Also published as: WO2024022209A1

Abstract

The application provides an information transmission method, an information transmission device, access network equipment and a radio access network controller, and relates to the technical field of communication. The method, performed by an access network device, comprises: and sending a first message to the radio access network controller, wherein the first message is used for requesting to delete at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription. According to the scheme, when the first message for requesting to delete at least one subscription is sent to the radio access network controller, the deletion identifier corresponding to the at least one subscription is carried, so that the radio access network controller is informed of the emergency degree of subscription deletion, smooth subscription deletion is ensured, and stable operation of the access network equipment is ensured.

Description

Information transmission method, device, access network equipment and wireless access network controller

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method, an information transmission device, an access network device, and a radio access network controller.

Background

The subscription deletion request procedure initiated by the existing Radio Access Network (RAN) side network function of E2 interface connection (which may be referred to as E2 node, which is a base station side node) has to rely on the decision of the Near real time radio access network controller (Near Real Time RAN Intelligent Controller, near-RT RIC). Whereas Near-RT RIC only suggests a request by the E2 node to attempt to delete a subscription, it does not necessarily result in a subscription deletion process. When an E2 node acts as a subscription resource provider, and is overloaded or fails, it is necessary to wait for a Near-RT RIC decision when one or more subscriptions are to be deleted, and the deletion request may be denied by the Near-RT RIC. Therefore, the E2 node cannot release the resource in time, causing further overload or failure, so that node instability increases.

If the E2 node forcibly starts the Reset (Reset) process, all RIC Subscriptions (Subscriptions) will be deleted directly and the resources will be released, which will not only affect the Subscriptions that originally requested to be deleted, but also delete other critical Subscriptions, resulting in unnecessary release of resources. Near-RT RIC can recover only by fully re-establishing all subscriptions, increasing recovery time and processing delay.

When the E2 node is in need of overload, fault and the like, the E2 node equipment cannot work stably because the decision of the Near-RT RIC refuses to subscribe to the deletion request is a problem to be solved urgently.

Disclosure of Invention

The embodiment of the application provides an information transmission method, an information transmission device, access network equipment and a radio access network controller, so as to ensure the stable operation of E2 node equipment.

In order to solve the above technical problem, an embodiment of the present application provides an information transmission method, which is executed by an access network device, including:

and sending a first message to the radio access network controller, wherein the first message is used for requesting to delete at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

Optionally, the method further comprises:

starting a timer;

deleting the first subscription if the first condition is satisfied;

Wherein the first condition includes:

receiving a second message fed back by the radio access network controller before the timer is overtime; or alternatively

The second message fed back by the radio access network controller is not received under the condition that the timer is overtime;

the second message is used for indicating deletion of a first subscription of at least one subscription indicated in the first message.

Optionally, the second message is a subscription deletion request message sent by the radio access network controller.

Optionally, after the deleting the first subscription, the method further includes:

and canceling the timer.

Optionally, in a case where the first condition includes that the second message fed back by the radio access network controller is not received in a case where the timer expires, after the deleting the first subscription, the method further includes:

and if a second message sent by the radio access network controller is received, feeding back a subscription deletion failure message to the radio access network controller, wherein the subscription deletion failure message is used for indicating that the failure reason is that subscription does not exist.

And sending a subscription updating message to the radio access network controller, wherein the subscription updating message carries identification information of all subscriptions of access network equipment.

Optionally, the first message is a subscription deletion request message sent by the access network device.

The embodiment of the application also provides an information transmission method, which is executed by the radio access network controller and comprises the following steps:

and receiving a first message sent by access network equipment, wherein the first message is used for requesting to delete at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

Optionally, the method further comprises:

and in the case that the deletion of the first subscription is allowed, sending a second message to the access network equipment, wherein the second message is used for indicating the deletion of the first subscription in at least one subscription indicated in the first message.

Optionally, the method further comprises:

and receiving subscription updating information sent by the access network equipment, wherein the subscription updating information carries identification information of all subscriptions existing in the access network equipment.

The embodiment of the application also provides an information transmission method, which is executed by the access network device and comprises the following steps:

and sending a subscription updating message to the radio access network controller, wherein the subscription updating message carries the identification information of the target subscription of the access network equipment.

Optionally, the sending a subscription update message to the radio access network controller includes:

sending a subscription update message to the radio access network controller in the case that the local deletion subscription or subscription loss exists in the access network device; or alternatively

And receiving a subscription inquiry message sent by the radio access network controller, and sending a subscription update message to the radio access network controller according to the subscription inquiry message.

Optionally, in a case where the access network device has a local deletion subscription or a subscription is lost, sending a subscription update message to the radio access network controller, the target subscription is all subscriptions that the access network device has.

Optionally, when receiving the subscription inquiry message sent by the radio access network controller and sending a subscription update message to the radio access network controller according to the subscription inquiry message, if the subscription inquiry message carries identification information of a subscription to be inquired, the target subscription is the subscription to be inquired; the subscription update message also carries status information of each subscription in the subscriptions to be queried, where the status information includes: subscription presence or subscription absence.

Optionally, when receiving the subscription inquiry message sent by the radio access network controller and sending a subscription update message to the radio access network controller according to the subscription inquiry message, if the subscription inquiry message does not carry identification information of the subscription to be inquired, the target subscription is all the subscriptions existing in the access network device.

and receiving a subscription updating message sent by the access network equipment, wherein the subscription updating message carries identification information of target subscription of the access network equipment.

Optionally, when the subscription update message is sent by the access network device in the case that the local deletion subscription exists or the subscription is lost, the target subscription is all subscriptions existing by the access network device.

Optionally, the receiving the subscription update message sent by the access network device includes:

sending a subscription inquiry message to the access network equipment;

and receiving a subscription update message sent by the access network equipment.

Optionally, in the case that the subscription query message carries identification information of a subscription to be queried, the target subscription is the subscription to be queried; the subscription update message also carries status information of each subscription in the subscriptions to be queried, where the status information includes: subscription presence or subscription absence.

Optionally, in the case that the subscription query message does not carry identification information of the subscription to be queried, the target subscription is all subscriptions existing in the access network device.

The embodiment of the application also provides access network equipment, which comprises a memory, a transceiver and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

and sending a first message to a radio access network controller through a transceiver, wherein the first message is used for requesting deletion of at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

Optionally, the processor is configured to read the computer program in the memory and further perform the following operations:

starting a timer;

deleting the first subscription if the first condition is satisfied;

wherein the first condition includes:

Optionally, in the case that the first condition includes that the second message fed back by the radio access network controller is not received in the case that the timer expires, the processor is further configured to read the computer program in the memory:

and if the transceiver receives the second message sent by the radio access network controller, feeding back a subscription deletion failure message to the radio access network controller, wherein the subscription deletion failure message is used for indicating that the failure reason is that the subscription does not exist.

and sending a subscription update message to the radio access network controller through a transceiver, wherein the subscription update message carries identification information of all subscriptions of access network equipment.

The embodiment of the application also provides a radio access network controller, which comprises a memory, a transceiver and a processor:

and receiving a first message sent by access network equipment through a transceiver, wherein the first message is used for requesting to delete at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

in case deletion of the first subscription is allowed, a second message is sent to the access network device by the transceiver, the second message being used to indicate deletion of the first subscription of the at least one subscription indicated in the first message.

and receiving subscription updating information sent by the access network equipment through a transceiver, wherein the subscription updating information carries identification information of all subscriptions existing in the access network equipment.

and sending a subscription update message to the radio access network controller through the transceiver, wherein the subscription update message carries identification information of target subscription of the access network equipment.

Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

sending a subscription update message to the radio access network controller through a transceiver in the event of local deletion subscription or subscription loss of an access network device; or alternatively

And receiving the subscription inquiry message sent by the radio access network controller through a transceiver, and sending a subscription update message to the radio access network controller according to the subscription inquiry message.

And receiving a subscription updating message sent by the access network equipment through the transceiver, wherein the subscription updating message carries the identification information of the target subscription of the access network equipment.

sending a subscription inquiry message to the access network device through a transceiver;

The embodiment of the application also provides an information transmission device, which is applied to the access network equipment and comprises:

the first sending unit is configured to send a first message to the radio access network controller, where the first message is used to request deletion of at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

The embodiment of the application also provides an information transmission device, which is applied to a radio access network controller and comprises:

the first receiving unit is used for receiving a first message sent by the access network equipment, wherein the first message is used for requesting to delete at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

And the second sending unit is used for sending a subscription updating message to the radio access network controller, wherein the subscription updating message carries the identification information of the target subscription of the access network equipment.

the second receiving unit is used for receiving a subscription updating message sent by the access network equipment, wherein the subscription updating message carries identification information of target subscription of the access network equipment.

Embodiments of the present application also provide a processor-readable storage medium storing a computer program for causing the processor to perform the above-described method.

The beneficial effects of this application are:

according to the scheme, when the first message for requesting to delete at least one subscription is sent to the radio access network controller, the deletion identifier corresponding to the at least one subscription is carried, so that the radio access network controller is informed of the emergency degree of subscription deletion, smooth subscription deletion is ensured, and stable operation of the access network equipment is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 shows one of flow diagrams of an information transmission method applied to an access network device according to an embodiment of the present application;

FIG. 2 shows a schematic diagram of a subscription deletion process;

FIG. 3 shows one of the schematic views of a subscription update process;

fig. 4 shows one of flow diagrams of an information transmission method applied to a radio access network controller according to an embodiment of the present application;

fig. 5 shows one of the unit diagrams of the access network device according to the embodiment of the present application;

fig. 6 shows a block diagram of an access network device according to an embodiment of the present application;

fig. 7 shows one of the unit diagrams of the radio access network controller according to the embodiment of the present application;

fig. 8 shows a block diagram of a radio access network controller according to an embodiment of the present application;

fig. 9 shows a second flowchart of an information transmission method applied to an access network device according to an embodiment of the present application;

FIG. 10 is a second schematic diagram of a subscription update process;

fig. 11 is a second flow chart of an information transmission method applied to a radio access network controller according to an embodiment of the present application;

fig. 12 shows a second schematic diagram of an element of an access network device according to an embodiment of the present application;

fig. 13 shows a second schematic diagram of a unit of a radio access network controller according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to implement embodiments of the present application described herein, such as in a sequence other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the embodiment of the application, the term "and/or" describes the association relationship of the association objects, which means that three relationships may exist, for example, a and/or B may be represented: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

Embodiments of the present application are described below with reference to the accompanying drawings. The information transmission method, the information transmission device, the access network equipment and the radio access network controller provided by the embodiment of the application can be applied to a wireless communication system. The wireless communication system may be a system employing a fifth generation (5th Generation,5G) mobile communication technology (hereinafter, simply referred to as a 5G system), and it will be understood by those skilled in the art that the 5G NR system is only an example and not a limitation.

The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the embodiments of the device and the method can be referred to each other, and the repetition is omitted.

As shown in fig. 1, an embodiment of the present application provides an information transmission method, which is executed by an access network device, and includes:

step S101, a first message is sent to a radio access network controller, where the first message is used to request deletion of at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

It should be noted that, the radio access network controller in the embodiments of the present application may include a Near real-time radio access network intelligent controller (Near-RT RIC). The access network device may be understood as a RAN-side network function entity (may be referred to as an E2 node) connected by an E2 interface, for example, may be a base station (e.g. eNB, gNB), or may be a control plane control unit (CU-CP), a user plane control unit (CU-UP) or a Distribution Unit (DU), or an aggregate form of CU-CP and CU-UP.

In the embodiment of the present application, when a deletion subscription is requested to the radio access network controller, a deletion flag corresponding to the subscription to be deleted is carried at the same time, where the deletion flag may be understood as a forced deletion flag, that is, the radio access network controller is informed that the deletion level of the subscription is the highest level, so that the radio access network controller timely responds to the subscription deletion. Alternatively, the first message may be a subscription delete request (i.e., RIC Subscription Delete Required) message sent by the access network device.

Further, during specific transmission, each subscription requesting deletion in the first message may correspond to a deletion identifier respectively; or the plurality of subscriptions share one deletion identifier, that is, the plurality of subscriptions requesting deletion in the first message together correspond to one deletion identifier, and when the radio access network controller acquires the deletion identifier, it can be known that the subscriptions requesting deletion in the first message all have forced deletion identifiers.

Optionally, after step S101, the method further includes:

starting a timer;

deleting the first subscription if the first condition is satisfied;

wherein the first condition includes one of:

A11, receiving a second message fed back by the radio access network controller before the timer is overtime;

optionally, if the radio access network controller can respond to the first message in time, a subscription deletion process (i.e. RIC Subscription Delete procedure) is performed between the radio access network controller and the access network device, the radio access network controller may feed back a second message to the access network device, where the second message is used to instruct to delete the first subscription in the at least one subscription indicated in the first message, and when the subscription deletion is performed, the radio access network controller and the access network device can delete only one subscription at a time, that is, the radio access network controller sends the second message once and can delete only one subscription, and if multiple subscriptions need to be deleted, the radio access network controller needs to send the second message multiple times.

Alternatively, the second message may be a subscription delete request (i.e., RIC Subscription Delete Request) message sent by the radio access network controller.

A12, under the condition that the timer is overtime, a second message fed back by the radio access network controller is not received;

optionally, if the timer expires, the radio access network controller is not able to respond to the first message, i.e. the radio access network controller is not able to send the second message to the access network device, the access network device actively deletes the at least one subscription requested in the first message.

Optionally, after the access network device actively deletes a subscription, if the access network device receives a second message corresponding to the subscription, because the access network device side does not already have the subscription, the access network device needs to feed back a corresponding message to inform the radio access network controller of the situation of the radio access network controller itself, and specifically, in at least one embodiment of the present application, the method further includes:

Optionally, in order to ensure synchronization of subscriptions between the access network device and the radio access network controller, in at least one embodiment of the present application, in a case that the timer expires without receiving a second message fed back by the radio access network controller, after the deleting of the first subscription, the method further includes: and sending a subscription updating message to the radio access network controller, wherein the subscription updating message carries identification information of all subscriptions of access network equipment.

That is, after the access network device actively deletes the subscriptions, it is necessary to inform the radio access network controller of all the subscriptions that exist in itself, so as to ensure synchronization of the subscriptions that exist in the access network device and the radio access network controller.

It should be noted that, when the access network device starts the timer, the timer is cancelled, whether after the timer expires or the requested subscription is deleted during operation.

The following exemplifies the communication of the E2 node with the Near-RT RIC, and the specific application of the present application is exemplified as follows.

In the first case, the subscription deletion process initiated by the E2 node is shown in fig. 2, and the subscription deletion request message may carry a forced deletion identifier to support the E2 node to locally and forcedly release the subscription, which specifically includes:

step 101, establishing one or more RIC Subscriptions between the near-RT RIC and E2 nodes;

it should be noted that different subscriptions may typically be identified by RIC Request indexes (e.g., RIC Request IDs) and/or RAN Function indexes (RAN Function IDs), etc.

Step 102, the E2 node discovers that one or more RIC Subscriptions need to be deleted at runtime;

step 103, the E2 node initiates RIC Subscription Delete Required message;

the RIC Subscription Delete Required message contains a list of RIC Subscriptions to delete (List of RIC Subscriptions To Be Removed) containing one or more subscriptions to delete, identified using the RIC Request ID, RAN Function ID. If there is a RIC description that needs to be forced deleted, the E2 node will also carry a forced delete Flag (Compulsory Flag).

The Near-RT RIC receives the RIC Subscription Delete Required message, with two processing branches for each RIC description contained in the List:

branch one, when Compulsory Flag is not set (this IE does not exist, following the original procedure)

Step 104, near-RT RIC decision;

step 105, initiate the RIC subscription deletion procedure (RIC Subscription Delete procedure) when the Near-RT RIC decision allows deletion of subscriptions.

Branch two, when the Compulsory Flag exists and is set to wire

Step 106, after the E2 node sends RIC Subscription Delete Required message, the local timer T is started _RICSUBdelete Wait for Near-RT RIC feedback.

In this case, there are two processing branches:

branch one, when Near-RT RIC is on timer T _RICSUBdelete Timely feedback during run time

In step 107, the near-RT RIC immediately decides to initiate RIC Subscription Delete the procedure upon receiving the RIC Subscription Delete Required message.

In step 108, the near-RT RIC releases the Subscription related resources, initiates RIC Subscription Delete procedure, and the process informs the E2 node of the RIC Subscription to be deleted, carrying the RIC Request ID and RAN Function ID.

Branch two, timer T _RICSUBdelete Timeout of time

In step 109, the E2 node releases the RIC description locally after the timer expires.

Step 110, after receiving RIC Subscription Delete Request message sent by Near-RT RIC or deleting subscription locally, E2 node cancels timer T _RICSUBdelete 。

Further, after the E2 node performs local deletion, there are two processing cases:

in case one, after the timer finishes and local deletion subscription is adopted by the E2 node, RIC Subscription Delete Request message sent by Near-RT RIC is received for the subscription. Since the subscription does not already exist locally at the E2 node, a feedback RIC Subscription Delete Failure message will carry a cause (cause) identifying that the RIC request index is unknown (RIC Request ID unknown). At this point the Near-RT RIC should consider the E2 node to have deleted the subscription locally, both parties subscribing to the context sync.

In the second case, the E2 node does not always receive any subscription deletion message for the subscription sent by the Near-RT RIC, which indicates that the Near-RT RIC refuses the deletion request, the failure cause fails to receive or fails to process the request, and at this time, the subscription context of the E2 node and the Near-RT RIC is not synchronized.

Further, the RIC SUBSCRIPTION DELTE REQUIRED message includes an RIC Subscription list that the E2 node requests to delete, i.e. one or more RIC subscriptions, and each item of the list summarizes that each RIC Subscription is identified by a RIC Request ID and a RAN Function ID, and carries the reason that the deletion is required.

An Optional (Optional) IE is added to the list item: compulsory Flag. The flag indication will be carried when the E2 node considers that one or more RIC subscriptions need to be forcedly deleted. If the forced deletion is not needed, the E2 node can not carry the flag and follow the original mechanism. One format of RIC SUBSCRIPTION DELTE REQUIRED message content is shown in table 1:

table 1 supporting forced release RIC SUBSCRIPTION DELTE REQUIRED message content

The mandatory identification of each RIC description in the List can realize different configurations of different RIC descriptions, and can respectively determine whether to need mandatory deletion or not.

For example, if the entire identification process is performed on all RIC descriptions, the manner in table 2 may be used, that is, to indicate that forced deletion is required for all RIC descriptions in the List. In this manner, all RIC Subscriptions can be identified at once, as opposed to the manner described above.

Table 2 overall identity forced delete RIC SUBSCRIPTION DELTE REQUIRED message content

Active reporting update after local deletion subscription of E2 node in case two

As shown in fig. 3, when the E2 node deletes a subscription locally or some other faults result in deleting a subscription, an RIC subscription update (RIC Subscription Update) message is actively sent, where the message includes the RIC subscription still existing at the E2 node, and informs the Near-RT RIC of the current subscription condition.

The Near-RT RIC receives the message, and can process the internal subscription of the Near-RT RIC according to the information provided by the E2 node, and align the subscription context of the two parties. Therefore, the problems that the E2 node locally deletes subscription, context information is lost due to Near-RT RIC fault, and the like, the RIC subscription states of the two parties are inconsistent, protocol errors such as the fact that Near-RT RIC cannot know the E2 node subscription condition are generated, data collection, optimization control and the like are affected, and the system operation efficiency is reduced are avoided.

It should be noted that, in the embodiment of the present application, aiming at the problem that in the prior art, because the E2 node is used as the resource provider of subscription and lacks forced deletion subscription, the E2 node overload or failure problem is further aggravated because the resource cannot be released in time, a method for supporting the E2 node to locally and forcedly release subscription and resource is provided, so that possible failures caused by overload, configuration errors and the like of the base station can be effectively reduced.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evolved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The access network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The access network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the access network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Corresponding to the implementation of the access network device side, as shown in fig. 4, an embodiment of the present application provides an information transmission method, which is executed by a radio access network controller, and includes:

step S401, a first message sent by an access network device is received, where the first message is used to request deletion of at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

Optionally, the method further comprises:

Optionally, the method further comprises: and receiving subscription updating information sent by the access network equipment, wherein the subscription updating information carries identification information of all subscriptions existing in the access network equipment.

It should be noted that, in the above embodiments, all descriptions about the radio access network controller are applicable to the embodiments of the information transmission method applied to the radio access network controller, and the same technical effects can be achieved.

As shown in fig. 5, an embodiment of the present application provides an information transmission apparatus 500, which is applied to an access network device, including:

a first sending unit 501, configured to send a first message to a radio access network controller, where the first message is used to request deletion of at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

Optionally, the apparatus further comprises:

a starting unit for starting the timer;

a deleting unit configured to delete the first subscription in case that the first condition is satisfied;

wherein the first condition includes:

Optionally, after the deleting unit deletes the first subscription, the method further includes:

and the cancellation unit is used for canceling the timer.

Optionally, in a case where the first condition includes that the second message fed back by the radio access network controller is not received in a case where the timer expires, after the deleting unit deletes the first subscription, the method further includes:

and the feedback unit is used for feeding back a subscription deletion failure message to the radio access network controller if the second message sent by the radio access network controller is received, wherein the subscription deletion failure message is used for indicating that the failure reason is that the subscription does not exist.

and the third sending unit is used for sending a subscription updating message to the radio access network controller, wherein the subscription updating message carries identification information of all subscriptions of the access network equipment.

It should be noted that, the embodiment of the access network device is an access network device corresponding to the embodiment of the method one by one, and all the implementation manners in the embodiment of the method are applicable to the embodiment of the access network device, so that the same technical effects can be achieved.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

As shown in fig. 6, the embodiment of the present application further provides an access network device, including a processor 600, a transceiver 610, a memory 620, and a program stored on the memory 620 and executable on the processor 600; the transceiver 610 is connected to the processor 600 and the memory 620 through a bus interface, where the processor 600 is configured to read a program in the memory, and perform the following procedures:

a first message is sent to the radio access network controller through the transceiver 610, where the first message is used to request deletion of at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

A transceiver 610 for receiving and transmitting data under the control of the processor 600.

Wherein in fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 600 and various circuits of memory represented by memory 620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

The processor 600 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

Further, the processor, for reading the computer program in the memory, performs the following operations:

starting a timer;

deleting the first subscription if the first condition is satisfied;

wherein the first condition includes:

and canceling the timer.

if a second message sent by the radio access network controller is received, feeding back a subscription deletion failure message to the radio access network controller through a transceiver, wherein the subscription deletion failure message is used for indicating that the failure reason is that subscription does not exist.

It should be noted that, the access network device provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the method and achieve the same technical effects, and the same parts and beneficial effects as those of the embodiment of the method in the embodiment are not described in detail herein.

The embodiments of the present application also provide a computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements the steps of an information transmission method applied to an access network device. The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

As shown in fig. 7, an embodiment of the present application provides an information transmission apparatus 700, applied to a radio access network controller, including:

the first receiving unit 701 is configured to receive a first message sent by an access network device, where the first message is used to request deletion of at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

Optionally, the apparatus further comprises:

and the fourth sending unit is used for sending a second message to the access network equipment under the condition that the first subscription is allowed to be deleted, wherein the second message is used for indicating to delete the first subscription in at least one subscription indicated in the first message.

Optionally, the apparatus further comprises:

and the third receiving unit is used for receiving the subscription updating message sent by the access network equipment, wherein the subscription updating message carries the identification information of all subscriptions of the access network equipment.

It should be noted that, the embodiment of the radio access network controller is a radio access network controller corresponding to the embodiment of the method, and all the implementation manners in the embodiment of the method are applicable to the embodiment of the radio access network controller, so that the same technical effects can be achieved.

As shown in fig. 8, the embodiment of the present application further provides a radio access network controller, including a processor 800, a transceiver 810, a memory 820, and a program stored on the memory 820 and executable on the processor 800; the transceiver 810 is connected to the processor 800 and the memory 820 through a bus interface, where the processor 800 is configured to read a program in the memory, and perform the following procedures:

A first message sent by an access network device is received through the transceiver 810, where the first message is used to request deletion of at least one subscription, and the first message carries a deletion identifier corresponding to the at least one subscription.

A transceiver 810 for receiving and transmitting data under the control of the processor 800.

Wherein in fig. 8, a bus architecture may comprise any number of interconnected buses and bridges, and in particular, one or more processors represented by processor 800 and various circuits of memory represented by memory 820, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 810 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, etc.

The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 in performing operations.

Alternatively, the processor 800 may be a CPU (Central processing Unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable Gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multi-core architecture.

The processor is configured to execute any of the methods provided in the embodiments of the present application by invoking a computer program stored in a memory in accordance with the obtained executable instructions. The processor and the memory may also be physically separate.

It should be noted that, the radio access network controller provided in this embodiment of the present application can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

The embodiments of the present application also provide a computer readable storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements the steps of an information transmission method applied to a radio access network controller. The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

As shown in fig. 9, an embodiment of the present application provides an information transmission method, which is executed by an access network device, and includes:

Step S901, a subscription update message is sent to a radio access network controller, where the subscription update message carries identification information of a target subscription of an access network device.

It should be noted that, the radio access network controller in the embodiments of the present application may include a Near real-time radio access network intelligent controller (Near-RT RIC). The access network device may be, for example, a base station, or may be an E2 node belonging to the access network side.

In the embodiment of the invention, the access network equipment sends the subscription update message to the radio access network controller, so that the interaction of subscription owned by the access network equipment and the radio access network controller can be ensured, and the stability and the operation efficiency of the system are improved.

Optionally, the implementation procedure of this step S901 includes one of the following:

b11, under the condition that the local deletion subscription exists in the access network equipment or the subscription is lost, a subscription update message is sent to the radio access network controller;

it should be noted that, when the access network device actively deletes the subscription (the process of actively deleting the subscription is referred to the implementation process of the above embodiment, which is not described herein again), or the subscription is lost (for example, a part of the subscription is lost after the access network device fails to restart), the subscription update message is actively sent to the radio access network controller; it will be appreciated that in this case, it may be understood that the access network device sends a subscription update message to the radio access network controller immediately upon performing an active deletion of the subscription or knowing that it has lost the subscription itself.

Optionally, in this case, the target subscription is all subscriptions that the access network device exists.

B12, receiving a subscription inquiry (RIC Subscription Query) message sent by the radio access network controller, and sending a subscription update message to the radio access network controller according to the subscription inquiry message;

optionally, in this case, the radio access network controller makes a subscription query to the access network device, and the access network device sends a subscription update message to the radio access network controller only after receiving the subscription query message.

Optionally, in this case, if the subscription query message carries identification information of a subscription to be queried, the target subscription is the subscription to be queried; further, the subscription update message further carries status information of each subscription in the subscriptions to be queried, where the status information includes: subscription presence or subscription absence. If the subscription query message does not carry the identification information of the subscription to be queried, the target subscription is all the subscriptions existing in the access network equipment.

For example, when inquiring about a subscription from an access network device, the radio access network controller may carry identification information of the subscription to be inquired in a subscription inquiry message, or may not carry the subscription; in the case that the subscription query message carries identification information of the subscription that the radio access network controller wants to query, the access network device needs to feed back for the specific subscription queried by the radio access network controller, for example, feeds back whether the specific subscription queried by the radio access network controller exists; under the condition that the subscription inquiry message does not carry the identification information of any subscription, the radio access network controller can be understood as the fact that the radio access network controller wants to inquire all subscriptions of the access network device side, and the access network device needs to feed back all the subscriptions existing in the access network device to the radio access network controller.

Case one and E2 node active reporting mode

Some subscriptions are deleted due to local deletion subscription or other faults of the E2 node, and RIC subscription update (RIC Subscription Update) information is actively sent, wherein the information contains RIC subscription still existing in the E2 node at present, and informs Near-RT RIC of the current subscription condition.

The Near-RT RIC receives the message, and can process the internal subscription of the Near-RT RIC according to the information provided by the E2 node, and align the subscription context of the two parties.

Condition two, near-RT RIC query mode

In the operation process of Near-RT RIC, it is found that the information reported by the E2 node is missing, for example, if a report message is not received for a subscription all the time, a RIC Subscription Query process may be initiated to query the subscription condition of the E2 node, and the specific process is as shown in fig. 10:

step 201, near-RT RIC sends RIC Subscription Query message to E2 node;

the message may include: a) Querying subscriptions at all E2 nodes, b) querying status information (partial subscriptions) of one or more specific subscriptions;

step 202, after receiving the RIC Subscription Query message, the E2 node compares the existing local subscription according to the query requirement of the Near-RT RIC, and feeds RIC Subscription Update a message to the Near-RT RIC to inform the query result.

Further, when the Near-RT RIC queries all subscriptions, the E2 node contains a complete list of locally existing subscriptions in the RIC Subscription Update message; when Near-RT RIC queries for partial subscriptions, the E2 node feeds back according to the subscriptions provided by the RIC, which may include locally existing subscriptions, unknown subscriptions (i.e., subscriptions that do not exist locally), and so on.

Further, in the above-described RIC Subscription synchronization process, the RIC Subscription Query message may be defined as a format as in table 3, optionally containing a list of RIC descriptions that the Near-RT RIC wants to query. When List of Queried RIC Subscriptions does not exist, then it indicates that the Near-RT RIC queries all subscriptions currently on the E2 node.

Table 3RIC Subscription Query message content

Optionally, the maximum number of RIC subscriptions requested by the Near-RT RIC to the E2 node is 1024.

Further, the RIC synchronization procedure described above, the RIC Subscription Update message may be defined as a format as in table 4, where List of Retained RIC Subscriptions and List of Unknown RIC Subscriptions are both alternatives (Range starts from 0).

1. When the E2 node actively reports the subscription updates, list of Retained RIC Subscriptions will be included, for all RIC Subscriptions currently left at the E2 node, each subscription identified using the RIC Request ID and RAN Function ID.

2. When Near-RT RIC queries for subscriptions at the E2 node:

if List of Queried RIC Subscriptions does not exist in the RIC Subscription Query message, then the E2 node needs to feed back all existing subscriptions currently, including List of Retained RIC Subscriptions;

if List of Queried RIC Subscriptions is carried in the RIC Subscription Query message, the E2 node feeds back the situation of each subscription according to the subscription identifier in the list: if the subscription still exists, (RIC Request id+ran Function ID) is placed in List of Retained RIC Subscriptions, and if the subscription does not exist, (RIC Request id+ran Function ID) is placed in List of Unknown RIC Subscriptions.

Table 4RIC Subscription Update message content

Optionally, the maximum number of RIC subscriptions fed back by the E2 node to the Near-RT RIC is 1024.

As can be seen from the above, the embodiment of the application provides a subscription synchronization mode aiming at the problem that the E2 node and the Near-RT RIC dual-subscription context cannot be aligned, so that subscription conditions of both parties can be updated, efficiency of Near-RT RIC data collection and control optimization is improved, processing time delay caused by invalid waiting due to information asynchronization is reduced, and system stability and operation efficiency are improved.

Corresponding to the implementation of the access network device side, as shown in fig. 11, an embodiment of the present application provides an information transmission method, which is executed by a radio access network controller, and includes:

step S1101, receiving a subscription update message sent by an access network device, where the subscription update message carries identification information of a target subscription of the access network device.

sending a subscription inquiry message to the access network equipment;

As shown in fig. 12, an embodiment of the present application provides an information transmission apparatus 1200, applied to an access network device, including:

Optionally, the second sending unit is configured to:

The embodiment of the present application further provides an access network device, where the specific structure of the access network device is shown in fig. 6, and is not described herein again.

The processor is used for reading the program in the memory, and executing the following processes:

Further, the processor is configured to read the computer program in the memory and perform the following operations:

As shown in fig. 13, an embodiment of the present application provides an information transmission apparatus 1300, applied to a radio access network controller, including:

a second receiving unit 1301, configured to receive a subscription update message sent by an access network device, where the subscription update message carries identification information of a target subscription of the access network device.

Optionally, the second receiving unit is configured to:

sending a subscription inquiry message to the access network equipment;

The embodiment of the present application further provides a radio access network controller, and the specific structure of the radio access network controller is shown in fig. 8 and will not be described herein.

sending a subscription inquiry message to the access network equipment;

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable 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 processor-executable instructions may also be stored in a processor-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 processor-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 processor-executable 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 modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. An information transmission method, performed by an access network device, comprising:

2. The method as recited in claim 1, further comprising:

starting a timer;

deleting the first subscription if the first condition is satisfied;

wherein the first condition includes:

3. The method of claim 2, wherein the second message is a subscription delete request message sent by the radio access network controller.

4. The method of claim 2, further comprising, after the deleting the first subscription:

and canceling the timer.

5. The method of claim 2, wherein, in the case where the first condition includes that the second message fed back by the radio access network controller is not received if the timer expires, after the deleting the first subscription, further comprising:

6. The method of claim 2, wherein, in the case where the first condition includes that the second message fed back by the radio access network controller is not received if the timer expires, after the deleting the first subscription, further comprising:

7. The method of claim 1, wherein the first message is a subscription delete request message sent by an access network device.

8. An information transmission method, performed by a radio access network controller, comprising:

9. The method as recited in claim 8, further comprising:

10. The method of claim 9, wherein the second message is a subscription delete request message sent by the radio access network controller.

11. The method as recited in claim 8, further comprising:

12. The method of claim 8, wherein the first message is a subscription delete request message sent by an access network device.

13. An information transmission method, performed by an access network device, comprising:

14. The method of claim 13, wherein the sending a subscription update message to the radio access network controller comprises:

15. The method according to claim 14, wherein the target subscription is all subscriptions that the access network device exists in case a local deletion subscription or a loss of subscription exists in the access network device, in case a subscription update message is sent to the radio access network controller.

16. The method according to claim 14, wherein in the case of receiving a subscription inquiry message sent by the radio access network controller and sending a subscription update message to the radio access network controller according to the subscription inquiry message, if the subscription inquiry message carries identification information of a subscription to be inquired, the target subscription is the subscription to be inquired; the subscription update message also carries status information of each subscription in the subscriptions to be queried, where the status information includes: subscription presence or subscription absence.

17. The method according to claim 14, wherein in the case of receiving a subscription inquiry message sent by the radio access network controller, and sending a subscription update message to the radio access network controller according to the subscription inquiry message, if the subscription inquiry message does not carry identification information of a subscription to be inquired, the target subscription is all subscriptions existing in the access network device.

18. An information transmission method, performed by a radio access network controller, comprising:

19. The method of claim 18, wherein the target subscription is all subscriptions that the access network device exists when the subscription update message is sent for the access network device in the presence of a local delete subscription or a loss of subscription.

20. The method of claim 18, wherein receiving the subscription update message sent by the access network device comprises:

sending a subscription inquiry message to the access network equipment;

21. The method according to claim 20, wherein the target subscription is a subscription to be queried in case the identification information of the subscription to be queried is carried in the subscription query message; the subscription update message also carries status information of each subscription in the subscriptions to be queried, where the status information includes: subscription presence or subscription absence.

22. The method according to claim 20, wherein the target subscription is all subscriptions existing for the access network device in case no identification information of the subscription to be queried is carried in the subscription query message.

23. An access network device comprising a memory, a transceiver, and a processor:

24. The access network device of claim 23, wherein the processor is configured to read the computer program in the memory to further:

starting a timer;

deleting the first subscription if the first condition is satisfied;

wherein the first condition includes:

25. The access network device of claim 24, wherein the processor is configured to read the computer program in the memory further to:

26. The access network device of claim 24, wherein the processor is configured to read the computer program in the memory further to:

27. A radio access network controller comprising a memory, a transceiver, and a processor:

28. The radio access network controller of claim 27, wherein the processor is configured to read the computer program in the memory to further:

29. The radio access network controller of claim 27, wherein the processor is configured to read the computer program in the memory to further:

30. An access network device comprising a memory, a transceiver, and a processor:

31. The access network device of claim 30, wherein the processor is configured to read the computer program in the memory and perform the following:

32. A radio access network controller comprising a memory, a transceiver, and a processor:

33. The radio access network controller of claim 32, wherein the processor is configured to read the computer program in the memory and perform the following:

34. An information transmission apparatus applied to an access network device, comprising:

35. An information transmission apparatus applied to a radio access network controller, comprising:

36. An information transmission apparatus applied to an access network device, comprising:

37. An information transmission apparatus applied to a radio access network controller, comprising:

38. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 22.