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Method and apparatus for latency monitoring

A technology of equipment and delay, applied in the field of communication network, can solve problems such as lack of precision

Active Publication Date: 2019-09-27
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TWAMP (or Two-Way Activity Measurement Protocol) is being considered, but traditional solutions do not include access to accurate time synchronization information, which results in a lack of required precision (accuracy in the sub-microsecond range)

Method used

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Embodiment Construction

[0044] In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular architectures, interfaces, techniques, etc. in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0045] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not nec...

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Abstract

A method of supporting latency monitoring in a network transporting traffic to and from a wireless base station. The method comprises, at a first node of the transport network determining (1401) a first timestamp representing a time at which a data element is received at the first node and adding (1402) information representative of the first timestamp to a communication signal which carries data for the wireless base station, the data including the data element. The method also comprises sending (1403) an indication of an association between the information representative of the first timestamp and the data element that the information representative of the first timestamp relates to. A method performed at a second node as well as apparatus for use at the first node and apparatus for use at the second node are also disclosed.

Description

technical field [0001] The present invention relates generally to communication networks, and in particular to monitoring delays in packet transmission in transport networks. Background technique [0002] The Radio Base Station (RBS) can be functionally separated into a Digital Unit (DU) and a Radio Unit (RU). The DU generates and processes a digitized baseband RF signal, the RU creates an analog transmit RF signal from the baseband signal and provides it to the antenna, and separately The RF received signal is digitized. [0003] Separation of DU and RU (split RBS) creates opportunities for network optimization. Active Remote Radio Heads (RRHs) are connected to the centralized pool of DUs by means of CPRI (Common Public Radio Interface) flows across geographical areas. The transmission of traffic between the distributed parts of a split RBS is called "fronthaul". The term "backhaul" describes traffic transmission to / from a base station with RF and baseband processing at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04W88/08H04J3/14H04L45/24
CPCH04L43/0852H04J3/14H04W88/085H04J2203/0035H04W56/0055H04L43/106H04L45/22
Inventor S.鲁菲尼S.施特拉卡
Owner TELEFON AB LM ERICSSON (PUBL)