CN114867071A - A method, electronic device and storage medium for establishing a QoS flow and DRB aggregation relationship - Google Patents

Abstract

The present invention provides a method for establishing an aggregation relationship between a QoS flow and a DRB. In the process of handover from an LTE station to an NR station, the QoS flow and E-RAB information of the source LTE base station are combined with the QoS flow and E-RAB information carried in the handover request. The RAB aggregation relationship is mapped to the aggregation relationship between the QoS flow of the destination NR base station and the DRB. The invention can effectively reduce the data plane processing complexity and reduce the risk of UE service data interruption.

Description

A method, electronic device and storage medium for establishing a QoS flow and DRB aggregation relationship

technical field

The present invention relates to the field of communication technologies, in particular to a method for establishing an aggregation relationship between QoS flows and DRBs, an electronic device and a storage medium, which are suitable for 3GPP wireless NR systems

Background technique

Related to 3GPP wireless systems 38.413, 36.413, and 38.300 protocols, the relevant flow of LTE to NR handover is defined as shown in Figure 1. The destination NR station needs to access the QoS flow carried in the HANDOVER REQUEST. At present, the related 38.413 and 38.300 protocols do not specify their mapping methods.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the prior art, a method for establishing an aggregation relationship between QoS flows and DRBs, an electronic device and a storage medium are provided, which can generate the aggregation relationship between local QoS flows and DRBs, reduce the complexity of data plane processing, and reduce UE services. Risk of data interruption.

The technical scheme adopted by the present invention is as follows: a method for establishing an aggregation relationship between a QoS flow and a DRB, in the process of handover from LTE to an NR base station, the target NR station obtains the QoS flow information to be established according to the information carried in the received handover request, and Establish an aggregation relationship corresponding to the QoS flow to the DRB.

Further, the NR base station obtains the aggregation relationship of the QoS flow to the E-RAB on the source LTE base station where the handover request exists, and uses the E-RAB as the DRB ID to complete the establishment of the aggregation relationship of the QoS flow to the DRB.

Further, in the NR base station, QoS flows with the same E-RAB are aggregated to the same DRB.

Further, it also includes specific steps for mapping between E-RAB and DRB in the process of switching from the LTE station to the NR station at the destination NR station:

Step 1, the destination NR station receives the handover request sent by the source LTE station, and decodes the handover request;

Step 2, the destination NR station obtains the relevant information of the required PDU and the E-RAB ID information of the source LTE station according to the decoded handover request; wherein, the relevant information of the PDU includes QoS flow and corresponding E-RAB information;

Step 3. Find out whether the ID exists in the E-RAB ID information of the source LTE station according to the E-RAB ID corresponding to the QoS flow. All QoS flows are aggregated into the DRB; if the corresponding E-RAB ID that does not exist in the QoS flow or the corresponding E-RAB ID does not exist in the E-RAB ID information of the source LTE station, a new E-RAB ID is generated according to the rules of the local station. DRB aggregation relationship.

The present invention also provides an electronic device, including a memory and a processor, where the memory stores a computer program that can be loaded by the processor and executes the above-mentioned method for establishing a QoS flow and a DRB aggregation relationship.

The present invention also provides a computer-readable storage medium on which computer program instructions are stored, wherein when the program instructions are executed by a processor, the program instructions are used to implement the process corresponding to the above-mentioned method for establishing a QoS flow and a DRB aggregation relationship.

Compared with the prior art, the beneficial effects of adopting the above technical solutions are: the present invention can effectively reduce the complexity of data plane processing and reduce the risk of UE service data interruption.

Description of drawings

FIG. 1 is a specific flowchart of handover from LTE to NR in the prior art.

FIG. 2 is a flowchart of a method for establishing an aggregation relationship between a QoS flow and a DRB proposed by the present invention.

Detailed ways

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar modules or modules having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but should not be construed as a limitation on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

Example 1

As shown in Figure 2, this embodiment proposes a method for mapping the QoS flow aggregation relationship of the source LTE base station E-RAB to the destination NR base station DRB during the QoS flow admission process on the target NR base station in the Inter Rat handover scenario. It is used to generate the aggregation relationship between the user QOS flow and DRB of the destination NR base station, which reduces the processing complexity of the UE data channel by the destination base station, and reduces the risk of data flow interruption during the handover process. The specific plans are as follows:

A method for establishing an aggregation relationship between a QoS flow and a DRB. In the process of handover from LTE to an NR base station, the destination NR station obtains the information of the QoS flow to be established according to the information carried in the received handover request, and establishes the aggregation of the corresponding QoS flow to the DRB. relation.

Specifically, the NR base station obtains the aggregation relationship of the QoS flow to the E-RAB on the source LTE base station where the handover request exists, and uses the E-RAB as the DRB ID to complete the establishment of the aggregation relationship of the QoS flow to the DRB, and will have the same E-RAB QoS flows are aggregated to the same DRB.

Among them, the PDU Session Resource Setup List, PDU Session Resource Setup Item, and Handover Request Transfer carried in the handover request (HANDOVER REQUEST) can be used to obtain the QoS flow information to be established, and the E-RAB ID in the QoS flow Setup Request Item is an optional information. The element is used to map with the E-RAB ID in the Source toTarget Transparent Container, indicating which QoS flows need to be forwarded.

In this embodiment, the E-RAB and DRB mapping process, that is, the QoS flow and DRB aggregation relationship establishment process in the process of switching the destination NR station to the NR station, is specifically described:

Step 1, the destination NR station receives the handover request sent by the source LTE station, and decodes the handover request through the ASN;

Step 2, the destination NR station obtains the relevant information of the required PDU and the E-RAB ID information of the source LTE station according to the decoded handover request; wherein, the relevant information of the PDU is obtained through the PDU Session Resource SetupList carried in the handover request, which mainly includes basic information. PDU SESSION ID information, QoS flow and corresponding E-RAB related information, etc.; the basic information of the E-RAB of the source LTE station is obtained through the Source to Target Transparent Container carried in the handover request, including the E-RAB ID, etc.

Step 3. Find out whether the ID exists in the E-RAB ID information of the source LTE station according to the E-RAB ID corresponding to the QoS flow. All QoS flows are aggregated into the DRB; if the corresponding E-RAB ID that does not exist in the QoS flow or the corresponding E-RAB ID does not exist in the E-RAB ID information of the source LTE station, a new E-RAB ID is generated according to the rules of the local station. DRB aggregation relationship.

In the process of handover from an LTE station to an NR station, the present invention maps the QoS flow and E-RAB aggregation relationship of the source LTE base station to the QoS flow of the target NR base station and the QoS flow of the DRB through the QoS flow and E-RAB information carried in the handover request. Aggregate relationships to reduce the complexity of data plane processing and the risk of data flow interruption during handover.

Example 2

This embodiment also provides an electronic device, including a memory and a processor, where the memory stores a computer program that can be loaded by the processor and executes the method for establishing a QoS flow and DRB aggregation relationship according to Embodiment 1.

Example 3

The present invention also provides a computer-readable storage medium on which computer program instructions are stored, wherein, when the program instructions are executed by a processor, the program instructions are used to implement the method for establishing a QoS flow and a DRB aggregation relationship described in Embodiment 1. the process of.

It should be noted that, in the description of the embodiments of the present invention, unless otherwise expressly specified and limited, the terms "arrangement" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, Or integrally connected; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood under specific circumstances; the accompanying drawings in the embodiments are used to clearly and completely describe the technical solutions in the embodiments of the present invention. The described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (6)

1. A method for establishing a QoS flow and DRB aggregation relation is characterized in that in the process of switching an LTE station to an NR station, a target NR station establishes an aggregation relation from a QoS flow to a DRB according to the aggregation relation in a source LTE station carried in a received switching request.

2. The method for establishing the aggregation relationship between the Qos flows and the DRBs of claim 1, wherein the NR base station obtains the aggregation relationship from the Qos flows to the E-RAB on the source LTE base station where the handover request exists, and completes the establishment of the aggregation relationship from the Qos flows to the DRBs by using the E-RAB as the DRB ID.

3. The method of claim 2, wherein the Qos flows with the same E-RAB are aggregated to the same DRB in the NR base station.

4. The method for establishing a Qos flow and DRB aggregation relationship according to any one of claims 1 to 3, further comprising the specific step of mapping E-RAB and DRB in the process of handover of an LTE station to an NR station by a target NR station:

step 1, a target NR station receives a switching request sent by a source LTE station and decodes the switching request;

step 2, the target NR station acquires the related information of the needed PDU and the E-RAB ID information of the source LTE station according to the decoded switching request; the related information of the PDU comprises QoS flow and corresponding E-RAB information;

step 3, searching whether the ID exists in E-RAB ID information of the source LTE station or not according to the E-RAB ID corresponding to the QoS flow, if so, taking the E-RAB ID as a DRB ID, and aggregating the QoS flows corresponding to the same E-RAB ID into the DRB; and if the corresponding E-RAB ID which does not exist in the QoS flow or the corresponding E-RAB ID does not exist in the E-RAB ID information of the source LTE station, generating a new DRB aggregation relation according to the rule of the station.

5. An electronic device, comprising a memory and a processor, wherein the memory stores a computer program capable of being loaded by the processor and executing the method for establishing QoS flow and DRB aggregation relation according to any one of claims 1 to 4.

6. A computer readable storage medium having stored thereon computer program instructions, wherein the program instructions, when executed by a processor, are configured to implement the procedure corresponding to the QoS flow and DRB aggregation relation establishment method according to any one of claims 1 to 4.

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