CN112087806A

CN112087806A - Method and electronic device for reducing call connection establishment delay

Info

Publication number: CN112087806A
Application number: CN201910505247.1A
Authority: CN
Inventors: 徐飞
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-12-15

Abstract

The invention discloses a method and an electronic device for reducing call connection establishment delay, which comprises the steps of carrying out PDU load establishment detection; and when the establishment of the 5QI bearer is detected, performing uplink pre-scheduling on the UE. The invention can reduce the time delay of the access and the answering of the UE in the 5G voice call and increase the user experience.

Description

Method and electronic device for reducing call connection establishment delay

Technical Field

The present invention relates to 5G mobile communication technology, and in particular, to a method for reducing call setup delay.

Background

In order to support Service flexibility and high-speed Data transmission, layer 2 is modified in a fifth-generation mobile communication system, and a Service Data Adaptation (SDAP) module is added. According to the description of the Next Generation Radio Access Network (NG-RAN) overall specification TS38.300 provided by the third Generation partnership project 3GPP, in LTE, a Radio Access Bearer management layer (RABM) is used above a Packet Data Convergence Protocol (PDCP) layer, and the module mainly maps different service Data to different Data Radio Bearer resources. However, in the 5G system, the SDAP module is not simply replacing the RABM module in the 4G LTE era, and there is an essential difference here. The mapping between the QoS Flow and the Data Radio Bearer (DRB) is completed according to the SDAP module in the service Data adaptation Protocol specification TS37.324 provided by 3GPP, and the QoS and the DRB may belong to different Protocol Data Unit (PDU) sessions.

In the prior art, a DRB establishment procedure between a User Equipment (UE) and a 5G base station (gNB) is established or modified through Radio Resource Control (RRC) messages, where a voice-related DRB is an RRC reconfiguration complete signaling that establishes a default bearer of 5QI5 or a dedicated bearer of 5QI1, and the signaling cannot be sent to the base station by the UE when a Discontinuous Reception (DRX) is started or when the DCI is lost, thereby causing the problem of too long time consumption of the UE during a call connection process.

Disclosure of Invention

The invention mainly aims to provide a method for reducing call connection establishment delay so as to reduce the time delay of PDU session establishment.

In order to achieve the purpose of the invention, the invention provides a method for reducing call connection establishment delay, which comprises the steps of carrying out PDU load establishment detection; and when the establishment of the 5QI bearer is detected, performing uplink pre-scheduling on the UE.

The invention sends the uplink resource required by the RRC establishment response of the 5QI bearer to the UE in advance, and carries out uplink pre-authorization on the signaling sent by the UE in advance, thereby reducing the time delay of the access and answering of the UE in the 5G voice call, effectively prolonging the connection time of the voice call by hundreds of milliseconds, and greatly improving the user experience.

Drawings

Fig. 1 is a flowchart illustrating a method for reducing call setup delay according to an embodiment of the present invention;

fig. 2 is a flowchart of a method for reducing call setup delay 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

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The present embodiment discloses a method for resource allocation, as shown in fig. 1, the method includes:

step S101: carrying out PDU load bearing establishment detection;

step S102: and when the establishment of the 5QI bearer is detected, performing uplink pre-scheduling on the UE.

The method for resource allocation disclosed in this embodiment specifically further includes the following steps:

before the UE reports the resource request, the uplink pre-scheduling of the UE comprises the step of sending down the uplink resource required by the RRC resource configuration response of the 5QI bearer to the UE. The RRC resource configuration response of the 5QI bearer includes an RRC reconfiguration response or an RRC connection recovery complete response.

Performing uplink pre-scheduling on the UE includes performing uplink periodic pre-scheduling on the UE. And pre-scheduling according to a preset period of the timer by setting the timer.

The technical solution of the present invention is explained in detail by the following specific examples:

the first embodiment is as follows:

the number listed in the examples is merely an example and is not intended to be limiting.

When the pre-scheduling switch established by the 5QI5 is turned on, PDU load establishment detection is carried out, and whether a 5QI1 load or a 5QI5 load is established or not is judged. The UE can be predicted to have an RRC reconfiguration response or an uplink RRC signaling message of RRC recovery completion in advance.

When the 5QI5 bearer establishment is detected, performing 5QI5 bearer pre-Scheduling, and because there is a possibility of missing detection in a Scheduling Request (SR) sent by the UE, performing pre-Scheduling according to a preset period of the timer by setting the timer. Wherein the preset period is an adjustable, short period to ensure that the signaling can be scheduled in time, for example, 5 ms. The method can ensure that the UE has enough time to process according to the cyclic authorization of the resources for the UE within a certain period of time, and once the UE is processed, the signaling can be transmitted as soon as possible by utilizing the authorization resources.

When the RRC reconfiguration response for establishing the 5QI5 bearer is received or the scheduling time reaches a preset time, for example, 5 times, the pre-scheduling of the 5QI5 is terminated, wherein the time-out time of the pre-scheduling may be modified. Thereby avoiding resources being granted to one UE for too long, resulting in wasted resources.

And when the 5QI1 bearer establishment is detected, carrying out 5QI1 bearer pre-scheduling, and carrying out pre-scheduling according to a preset period of the timer by setting the timer. Wherein the preset period is an adjustable, short period to ensure that the signaling can be scheduled in time, for example, 5 ms.

When the RRC reconfiguration response for establishing the 5QI1 bearer is received or the scheduling time reaches a preset time, for example, 5 times, the pre-scheduling of the 5QI1 is terminated, wherein the time-out time of the pre-scheduling may be modified.

Example two:

As shown in fig. 2, when the pre-scheduling switch established by 5QI5 is turned on, PDU bearer establishment detection is performed to determine whether a 5QI1 bearer or a 5QI5 bearer is established.

And when the 5QI5 bearer establishment is detected, carrying out 5QI5 bearer pre-scheduling, and carrying out pre-scheduling according to a preset period of the timer by setting the timer. Wherein the preset period is an adjustable, short period to ensure that the signaling can be scheduled in time, for example, 5 ms.

If the UE is a calling user, when the base station receives a first session invite message of the calling user, terminating the pre-scheduling; if the UE is the called user, when the base station receives the first response message 100trying message of the user, the pre-scheduling is terminated.

And when the 5QI1 bearer is detected to be established, carrying out 5QI1 bearer pre-scheduling, if the current terminal enters a DRX state, directly scheduling the terminal to carry out uplink pre-authorization UL Grant, and awakening the terminal to exit the DRX state. The UE can be awakened in time by carrying out uplink authorization through pre-scheduling, and the time for sending RRC configuration response (establishing 5QI1 bearing) signaling by the UE can be shortened.

When the RRC reconfiguration response for establishing the 5QI1 bearer is received or the scheduling time reaches a preset time, for example, 5 times, the pre-scheduling of the 5QI1 is terminated, wherein the time-out time of the pre-scheduling may be modified. Therefore, the periodical authorization resources are terminated in time after the signaling of the terminal comes or when the terminal processes abnormity, and the resources are prevented from being authorized to a user terminal for too long time.

It will be apparent to those skilled in the art that the steps of the present invention described above may be implemented by a general purpose computing device, centralized on a single computing device or distributed across a network of computing devices, or alternatively, by program code executable by a computing device, such that the steps shown and described may be executed by a computing device stored in a memory device and, in some cases, executed out of order, or fabricated separately as individual integrated circuit modules, or fabricated as a single integrated circuit module from a plurality of modules or steps. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for reducing call completion setup latency, the method comprising:

carrying out PDU load bearing establishment detection;

and when the establishment of the 5QI bearer is detected, performing uplink pre-scheduling on the UE.

2. The method according to claim 1, wherein the pre-scheduling the uplink to the UE comprises issuing an uplink grant resource to the UE, wherein the uplink grant resource comprises an uplink resource required for an RRC resource configuration response of a 5QI bearer.

3. The method of claim 2, wherein the issuing the uplink grant resource to the UE is before the UE reports the resource request.

4. The method of claim 1, wherein the pre-scheduling the UE in uplink comprises pre-scheduling the UE in uplink periodically.

5. The method of claim 4, wherein the pre-scheduling the uplink periodically for the UE comprises setting a timer, and performing pre-scheduling according to a period preset by the timer.

6. The method of claim 2, wherein the RRC resource configuration response of the 5QI bearer comprises an RRC reconfiguration response or an RRC connection recovery complete response.

7. The method of claim 1, wherein the pre-scheduling is terminated when an RRC reconfiguration response for establishing a 5QI bearer is received or a scheduling number reaches a preset number.

8. The method of claim 1, wherein when the UE is a calling subscriber, the pre-scheduling is terminated when a first session invitation message is received from the calling subscriber; and when the UE is the called user, receiving a first response message of the called user, and terminating the pre-scheduling.

9. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 8 when executed.

10. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 8.