Intelligent transport system congestion and multi-channel control

Patent metadata

Field	Value
Publication number	US-2022110018-A1
Application number	US-202117551871-A
Country	US
Kind code	A1
Filing date	Dec 15, 2021
Priority date	Apr 29, 2021
Publication date	Apr 7, 2022
Grant date	—

Abstract

The present disclosure provides techniques or mechanisms to reduce congestion or improve efficiency of intelligent transport system (ITS) congestion and multi-channel control. Some embodiments relate to multi-channel transmission of ITS-related service messages. Some embodiments relate to use of a freshness factor in scheduling ITS transmissions. Other embodiments may be described or claimed.

First claim

1 . An intelligent transportation system (ITS)-station (ITS-S) comprising:
one or more processors; and one or more non-transitory computer-readable media comprising instructions that, upon execution of the instructions by the one or more processors, are to cause a facilities layer (FAC) entity to:
identify, based on a radio access technology (RAT)-related indication received from a cross-layer management (CROSS) entity, an available channel busy ratio (CBR) percentage per radio channel of a wireless connection between the ITS-S and another ITS entity;
identify a freshness factor related to respective messages that are to be transmitted on a wireless connection by the ITS-S;
calculate, based on the CBR and the freshness factor, a minimum inter-message interval for respective applications and respective traffic classes of the wireless connection; and
provide, to the CROSS entity, an indication of the minimum inter-message intervals for the respective applications and respective traffic classes.

2 . The ITS-S of claim 1 , wherein the RAT-related indication includes context-related information of a RAT on which the respective messages are to be transmitted.

3 . The ITS-S of claim 2 , wherein the context-related information includes position, speed, or heading of nodes within a vicinity of the ITS-S that are configured to communicate on the RAT.

4 . The ITS-S of claim 1 , wherein the CROSS entity is to identify, based on the indication of the minimum inter-message intervals for the respective applications and respective traffic classes, a channel resource limit (CRL) for a channel of the wireless connection.

5 . The ITS-S of claim 4 , wherein the CROSS entity is further to allocate, for a channel related to the CRL, a proportion of an available channel resource (CR) for transmission of the respective messages.

6 . The ITS-S of claim 4 , wherein the channel is a first channel, and wherein the CROSS entity is further to identify, based on the indication of the minimum inter-message intervals for the respective applications and respective traffic classes, a second CRL for a second channel of the wireless connection.

7 . The ITS-S of claim 1 , wherein the freshness factor is a freshness of information parameter or a remaining lifetime of information (RLoI) parameter.

8 . The ITS-S of claim 7 , wherein the freshness factor further includes a weight applied to the freshness of information parameter or a weight applied to the RLoI parameter.

9 . The ITS-S of claim 1 , wherein the CROSS entity is a multi-channel operation (MCO) CROSS (MCO_CROSS) entity or a decentralized congestion control (DCC) CROSS (DCC_CROSS) entity.

10 . The ITS-S of claim 1 , wherein the FAC entity is a multi-channel operation (MCO) FAC (MCO_FAC) entity or a decentralized congestion control (DCC) FAC (DCC_FAC) entity.

11 . An edge device, comprising:
a wireless interface to communicate with one or more other edge devices in a wireless network; one or more processors; and one or more non-transitory computer-readable media comprising instructions that, upon execution of the instructions by the one or more processors, are to cause the edge device to:
identify a plurality of service messages to be transmitted on a primary channel of a wireless network;
identify at least one service message of the plurality of service messages to be offloaded to a secondary channel of the wireless network;
cause transmission of a set of the service messages of the plurality of service messages on the primary channel, wherein the set of the service messages does not include the at least one service message; and
cause transmission of the at least one service message on the secondary channel.

12 . The edge device of claim 11 , wherein identification that the at least one service message is to be offloaded to the secondary channel is based on a comparison of a priority of the at least one service message to respective priorities of other service messages of the plurality of service messages.

13 . The edge device of claim 12 , wherein identification that the at least one service message is to be offloaded to the secondary channel is based on an identification that the priority of the at least one service message is lower than a priority of another service message of the plurality of service messages.

14 . The edge device of claim 12 , wherein identification that the set service message is to be transmitted on the primary channel is based on an identification that a priority of the first service message is higher than a priority of another service message of the plurality of service messages.

15 . The edge device of claim 11 , wherein the primary channel is a broadcast channel.

16 . The edge device of claim 11 , wherein the secondary channel is a broadcast channel, a unicast channel, or a groupcast channel.

17 . The edge device of claim 11 , wherein identification that the second service message is to be offloaded to a secondary channel is based on an identification that a channel bandwidth required to transmit the plurality of service messages exceeds an available bandwidth of the primary channel.

18 . The edge device of claim 11 , wherein execution of the instructions are further to cause the edge device to:
identify, based on a size of another service message of the plurality of service messages, that the other service message is to be transmitted on the secondary channel; adjust a message rate or size of the other service message to generate an adjusted other service message; and identify, based on a size of the adjusted other service message, that the other service message is to be transmitted on the primary channel.

19 . The edge device of claim 11 , wherein the primary channel is a primary channel of a plurality of primary channels, wherein respective primary channels of the plurality of primary channels are related to different edge computing applications or edge computing services.

20 . The edge device of claim 11 , wherein the plurality of service messages are intelligent transportation system (ITS) service messages, and the plurality of service messages include one or more of a maneuver coordination message (MCM), a decentralized environmental notification message (DENM), a collective perception message (CPM), a cooperative awareness message (CAM), and an ITS multi-channel operation (MCO) assistance message (MAS).

21 . One or more non-transitory computer-readable media (NTCRM) comprising instructions for operating a cross-layer management (CROSS) entity of an intelligent transportation system (ITS)-station (ITS-S), wherein execution of the instructions by one or more processors of the ITS-S is to cause the ITS-S to operate the CROSS entity to:
send a radio access technology (RAT)-related indicator to a facilities layer (FAC) entity, the RAT-related indicator for identification of an available channel busy ratio (CBR) percentage per radio channel of a wireless connection between the ITS-S and another ITS entity; receive, from the FAC entity, an inter-message interval indicator that includes respective minimum inter-message intervals for corresponding applications and corresponding traffic classes, wherein the respective minimum inter-message intervals are based on the CBR and a freshness factor related to respective messages that are to be transmitted on a wireless connection by the ITS-S.

22 . The one or more NTCRM of claim 21 , wherein the RAT-related indication includes context-related info

Assignees

• Intel Corp

Inventors

• Jha Satish C
• Sharma Banjade Vesh Raj
• Sivanesan Kathiravetpillai
• Gomes Baltar Leonardo
• Sehra Suman A

Classifications

• H04W72/569

  of the traffic information · CPC title

• H04W28/0289 Primary

  Congestion control (load shedding arrangements in network planning H04W16/08; performing reselection for handling the traffic H04W36/22; wireless traffic scheduling H04W72/12) · CPC title

• H04W4/027

  using movement velocity, acceleration information · CPC title

• H04W4/40

  for vehicles, e.g. vehicle-to-pedestrians [V2P] · CPC title

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title