Unlock instant, AI-driven research and patent intelligence for your innovation.

Network access nodes and client devices for maintaining time synchronization

A technology for network access nodes and client devices, applied in synchronization devices, wireless network protocols, digital transmission systems, etc., and can solve the problems of short delay and high reliability

Active Publication Date: 2022-02-25
HUAWEI TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, a variety of URLLC services can be expected from so-called chat applications, where the chat applications frequently transmit small packets with strict requirements on latency and reliability, to alarm systems where sensors may rarely report alarms, But once the alarm is raised, the latency must be short and the reliability must be high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Network access nodes and client devices for maintaining time synchronization
  • Network access nodes and client devices for maintaining time synchronization
  • Network access nodes and client devices for maintaining time synchronization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0104] In LTE, for eg NR mobile broadband service, timing advance control is used to initiate and maintain uplink time synchronization of UE. The network access node, for example, in NR, the so-called next generation NodeB (gNB for short) estimates the initial timing advance from the random access request sent by the UE during initial access. The random access request is further used as an uplink time reference during eg radio link failure and handover. Upon receiving the Random Access Request, the gNB calculates the Timing Advance value and transmits the Timing Advance value to the UE in a Timing Advance Command as part of the Random Access Response. Once the UE is in the connected state, if the uplink time needs to be corrected, the gNB will continue to estimate the timing advance of the UE and transmit a timing advance command to the UE. In LTE, the UE adjusts its uplink transmission time in subframe #n+6 according to the timing advance command received in downlink subfram...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to maintaining time synchronization of a wireless connection (502) between a network access node (100) and a client device (300). A wireless connection can be configured (502) for traffic with delay constraints. Based on, for example, the time alignment timer of the client device (300) expiring, the network access node (100) transmits a control message (510) to the client device (300), wherein the control message instructs the client device (300) to send a message to the network access The ingress node (100) transmits a response signal (520). The network access node (100) can use the response signal (520) to determine the timing advance of the wireless connection (502), and adjust the timing advance if necessary. Thus, time synchronization of the wireless connection (502) can be maintained, thereby reducing delays in uplink and downlink transmissions.

Description

technical field [0001] The invention relates to a network access node and a client device for maintaining time synchronization of wireless connections. Furthermore, the invention also relates to a corresponding method and computer program. Background technique [0002] Over the past three decades, the growth of wireless data traffic has never stopped. It is expected that the upcoming fifth generation (5G for short) wireless cellular communication system new radio (new radio, NR for short) will carry 1000 times the traffic while maintaining high reliability. Another key requirement for 5G is to support ultra-low latency services, where latency corresponds to the time it takes to transmit a packet of data through the network. [0003] The nominal delay of the current fourth generation (4G for short) wireless cellular communication system LTE is about 50 ms. However, this is currently unpredictable and can be as long as a few seconds. In addition, it is mainly optimized for...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
CPCH04W56/0045H04W74/0833H04L25/0226H04W56/001H04W80/02H04W72/23
Inventor 本特·林多夫古斯塔夫·格莱森拉马·库马尔·莫匹代韦胡文权托斯顿·斯科尔
Owner HUAWEI TECH CO LTD