Traffic timing control for an open radio access network in a cloud radio access network system

Patent metadata

Field	Value
Publication number	US-2021385686-A1
Application number	US-202117335655-A
Country	US
Kind code	A1
Filing date	Jun 1, 2021
Priority date	Jun 3, 2020
Publication date	Dec 9, 2021
Grant date	—

Abstract

There is provided a method of operating an Open Radio Access Network (O-RAN) having an O-RAN radio unit (O-RU) and an O-RU controller. The method includes sending, from the O-RU to the O-RU controller, (i) a message informing that the O-RU supports a feature such as (a) a plurality of delay management profiles, and/or (b) a plurality of transmission window sizes, and (ii) a report of capabilities of the O-RU, where the report includes a parameter such as (a) a quantity of supported delay management profiles, (b) supported window sizes for each of the plurality of delay management profiles, and/or (c) a supported window offset for each of the plurality of delay management profiles. The O-RU controller configures the O-RU based on the feature and the parameter.

First claim

What is claimed is:

1 . A method of operating an Open Radio Access Network (O-RAN) having an O-RAN radio unit (O-RU) and an O-RU controller, comprising:
sending, from said O-RU to said O-RU controller, a message informing that said O-RU supports a feature selected from the group consisting of (a) a plurality of delay management profiles, and (b) a plurality of transmission window sizes; and sending, from said O-RU to said O-RU controller, a report of capabilities of said O-RU, wherein said report comprises a parameter selected from the group consisting of (a) a quantity of supported delay management profiles, (b) supported window sizes for each of said plurality of delay management profiles, and (c) a supported window offset for each of said plurality of delay management profiles; wherein said O-RU controller configures said O-RU based on said feature and said parameter.

2 . The method of claim 1 , wherein each of said plurality of delay management profiles is defined in terms of a bandwidth and subcarrier spacing, and given a delay management profile identification.

3 . The method of claim 1 , wherein said O-RAN also includes an O-RAN distributed unit (O-DU), and said method further comprises:
sending, from said O-DU to said O-RU, in a control-plane message, a section extension that includes a delay management profile identification (ID) that identifies a delay management profile to be used for a user-plane resource.

4 . The method of claim 3 , wherein said delay management profile ID refers to delay parameters of a control-plane message.

5 . The method of claim 1 , wherein said O-RAN also includes an O-RAN distributed unit (O-DU), and said method further comprises:
sending, from said O-DU to said O-RU, in a control-plane message, a section extension that indicates a transmit window and a delay offset to be used for a time/frequency resource.

6 . The method of claim 1 , wherein said O-RU controller statically links, via a management-plane interface, a delay management profile in said plurality of delay management profiles, to traffic selected from the group consisting of user-plane traffic and control-plane traffic.

7 . The method of claim 1 , wherein said O-RU controller configures said O-RU, via a management-plane interface, with a window size from said supported set of window sizes, and a window offset from said supported window offsets, for traffic selected from the group consisting of user-plane traffic and control-plane traffic.

8 . The method of claim 1 , wherein said O-RU controller configures said O-RU via a management-plane interface by marking control-plane traffic as non-delay managed traffic.

9 . An Open Radio Access Network Radio Unit (O-RU) comprising electronic circuity adapted to perform operations of:
sending to an O-RU controller in an Open Radio Access Network (O-RAN), a message informing that said O-RU supports a feature selected from the group consisting of (a) a plurality of delay management profiles, and (b) a plurality of transmission window sizes; sending to said O-RU controller, a report of capabilities of said O-RU, wherein said report comprises a parameter selected from the group consisting of (a) a quantity of supported delay management profiles, (b) supported window sizes for each of said plurality of delay management profiles, and (c) a supported window offset for each of said plurality of delay management profiles; receiving from said O-RU controller, configuration data based on said feature and said parameter; and operating said O-RU in accordance with said configuration data.

10 . The O-RU of claim 9 , wherein each of said plurality of delay management profiles is defined in terms of a bandwidth and subcarrier spacing, and given a delay management profile identification.

11 . The O-RU of claim 9 , wherein said electronic circuitry is further adapted to perform an operation of:
receiving, from an Open Radio Access Network Distributed Unit (O-DU) in said O-RAN, in a control-plane message, a section extension that includes a delay management profile identification (ID) that identifies a delay management profile to be used for a user-plane resource.

12 . The O-RU of claim 11 , wherein said delay management profile ID refers to delay parameters of a control-plane message.

13 . The O-RU of claim 9 , wherein said electronic circuitry is further adapted to perform an operation of:
receiving from an Open Radio Access Network Distributed Unit (O-DU) in said O-RAN, in a control-plane message, a section extension that indicates a transmit window and a delay offset to be used for a time/frequency resource.

14 . The O-RU of claim 9 , wherein said O-RU controller statically links, via a management-plane interface, a delay management profile in said plurality of delay management profiles, to traffic selected from the group consisting of user-plane traffic and control-plane traffic.

15 . The O-RU of claim 9 , wherein said O-RU controller configures said O-RU, via a management-plane interface, with a window size from said supported set of window sizes, and a window offset from said supported window offsets, for traffic selected from the group consisting of user-plane traffic and control-plane traffic.

16 . The O-RU of claim 9 , wherein said O-RU controller configures said O-RU via a management-plane interface by marking control-plane traffic as non-delay managed traffic.

17 . An Open Radio Access Network Radio Unit controller (O-RU controller) comprising electronic circuity adapted to perform operations of:
receiving, from an Open Radio Access Network Radio Unit (O-RU) in an Open Radio Access Network (O-RAN), a message informing that said O-RU supports a feature selected from the group consisting of (a) a plurality of delay management profiles, and (b) a plurality of transmission window sizes; receiving, from said O-RU to said O-RU controller, a report of capabilities of said O-RU, wherein said report comprises a parameter selected from the group consisting of (a) a quantity of supported delay management profiles, (b) supported window sizes for each of said plurality of delay management profiles, and (c) a supported window offset for each of said plurality of delay management profiles; and configuring said O-RU based on said feature and said parameter.

18 . The O-RU controller of claim 17 , wherein each of said plurality of delay management profiles is defined in terms of a bandwidth and subcarrier spacing, and given a delay management profile identification.

19 . The O-RU controller of claim 17 , wherein said O-RAN also includes an O-RAN distributed unit (O-DU), and wherein said O-DU sends to said O-RU, in a control-plane message, a section extension that includes a delay management profile identification (ID) that identifies a delay management profile to be used for a user-plane resource.

20 . The O-RU controller of claim 19 , wherein said delay management profile ID refers to delay parameters of a control-plane message.

21 . The O-RU controller of claim 17 ,
wherein said O-RAN also includes an O-RAN distributed unit (O-DU), and wherein said O-DU sends to said O-RU, in a control-plane message, a section extension that indicates a transmit window and a delay offset to be used for a time/frequency resource.

22 . The O-RU controller of claim 17 , wherein said electronic circuitry is further adapted to perform an operation of statically linking, via a management-plane interface, a delay management profile

Assignees

• Mavenir Systems Inc

Inventors

• Ahmed Wessam Afifi
• Nam Young-Han
• Rajagopal Sridhar
• Kachhla Rasiklal

Classifications

• H04L41/40

  using virtualisation of network functions or resources, e.g. SDN or NFV entities · CPC title

• H04W28/06 Primary

  Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} · CPC title

• H04W24/02 Primary

  Arrangements for optimising operational condition · CPC title

• H04W88/12

  Access point controller devices · CPC title

• H04W56/0045

  compensating for timing error by altering transmission time · CPC title