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Method and device for determining air interface time delay

An air interface delay and delay technology, applied in the field of communication, can solve the problems of inaccurate delay control and inability to meet the needs of VR services.

Pending Publication Date: 2022-03-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is not precise enough for delay control, and may not be able to meet the business requirements of VR services in some cases

Method used

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  • Method and device for determining air interface time delay
  • Method and device for determining air interface time delay
  • Method and device for determining air interface time delay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0183] Embodiment 1 is used to illustrate the implementation process of the above-mentioned mode 1. In Embodiment 1, the loopback delay includes the delay inside the cellular network and the delay outside the cellular network.

[0184] see Figure 12 , the method that embodiment 1 provides comprises:

[0185] 1201. The terminal initiates a PDU session establishment process, so as to establish a PDU session for uplink and downlink data transmission.

[0186] 1202. The terminal sends an uplink data packet to the access network device, where the uplink data packet includes: a first identifier, a timestamp, and a loopback delay D. Correspondingly, the access network device receives the uplink data packet.

[0187] Wherein, the timestamp indicates the time T1 when the terminal sends the uplink data packet.

[0188] 1203. The access network device determines the time T1 and the loopback delay D when the terminal sends the uplink data packet according to the uplink data packet. ...

Embodiment 2

[0203] Embodiment 2 is used to illustrate the implementation process of the above-mentioned manner 2. At this time, the loopback delay includes the delay in the cellular network. In this case, the UPF needs to determine the delay outside the cellular network and send it to the access network device, so that the access network device can determine the air interface delay of the downlink data packet according to the delay.

[0204] see Figure 13 , the method that embodiment 2 provides comprises:

[0205] Steps 1301-1305 are the same as steps 1201 to 1205 respectively.

[0206] 1306. The UPF records the sending time T3 of the uplink data packet.

[0207] Steps 1307-1308 are the same as steps 1206 and 1207 respectively.

[0208] 1309. The UPF records the time T4 when the downlink data packet is received, and calculates the first time delay D1.

[0209] Specifically, the UPF can obtain the first time delay D1=T4-T3 according to T4 and T3.

[0210] 1310. The UPF sends the dow...

Embodiment 3

[0215] Embodiment 3 is different from Embodiment 1 and Embodiment 2 in that: the UPF determines the air interface delay of the downlink data packet or the information used to determine the air interface delay of the downlink data packet and sends it to the access network device, and the access network The device schedules downlink data packets according to the information sent by the UPF. In this embodiment, the adaptation layer carries the first identifier, timestamp, and loopback delay as an example to illustrate the method provided in the above embodiment. At this time, the access network device does not need to perceive the association between uplink and downlink data transmission. , it only needs to perform downlink data packet scheduling according to the UPF instruction.

[0216] see Figure 14 , the method that embodiment 3 provides comprises:

[0217] 1401. Same as step 1201.

[0218] 1402. The terminal sends an uplink data packet, and the adaptation layer header of...

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Abstract

The invention provides a method and device for determining air interface time delay, and relates to the technical field of communication. In the method, an access network device obtains an air interface time delay of a downlink data packet and schedules the downlink data packet according to the air interface time delay of the downlink data packet, and the air interface time delay of the downlink data packet is calculated according to a loopback time delay. The loopback time delay refers to the time delay which needs to be met from the time when the terminal sends the uplink data packet to the time when the terminal receives the downlink data packet corresponding to the uplink data packet. In the method, the access network equipment can schedule the downlink data packet according to the air interface time delay of the downlink data packet, so that the time delay control of uplink and downlink data transmission is accurately carried out, and a guarantee is provided for the uplink and downlink data transmission to meet the loopback time delay.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method and device for determining air interface delay. Background technique [0002] The development of communication technology has further improved the experience of the new media industry. Video services have become the mainstream media form, and emerging multimedia services such as 4K / 8K ultra-high-definition video, virtual reality (virtual reality, VR), and augmented reality (augment reality, AR) have emerged. VR is a transformative technology that completely subverts content consumption and communication consumption. VR technology blocks users' sight and brings their senses into an independent and brand-new virtual space, providing users with an immersive and more immersive experience. [0003] When VR technology is applied, see figure 1 , VR devices (for example, VR helmets) capture user motion information, such as head movements, hand movements, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L69/16H04L47/24
CPCH04L69/16H04L47/82H04L43/0864H04L47/283H04W28/0236H04W72/542H04W24/10H04W28/10H04W92/10
Inventor 黄正磊倪慧李永翠潘奇
Owner HUAWEI TECH CO LTD
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