Intelligent transport system congestion and multi-channel control
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.
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, wherein the RAT-related indication includes context-related information of a RAT on which the respective messages are to be transmitted;
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 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.
3 . 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.
4 . The ITS-S of claim 3 , 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.
5 . The ITS-S of claim 3 , 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.
6 . The ITS-S of claim 1 , wherein the freshness factor is a freshness of information parameter or a remaining lifetime of information (RLoI) parameter.
7 . The ITS-S of claim 6 , wherein the freshness factor further includes a weight applied to the freshness of information parameter or a weight applied to the RLoI parameter.
8 . 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.
9 . 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.
10 . 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, wherein the RAT-related indication includes context-related information of a RAT on which the respective messages are to be transmitted;
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.
11 . The one or more NTCRM of claim 10 , 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.
12 . The one or more NTCRM of claim 10 , wherein execution of the instructions is to cause the ITS-S to operate the CROSS entity to:
identify a first channel resource limit (CRL) for a first channel of the wireless connection based on the inter-message interval indicator for the respective applications and respective traffic classes;
identify a second CRL for a second channel of the wireless connection based on the inter-message interval indicator for the respective applications and respective traffic classes; and
allocate, for the first channel or the second channel, a proportion of an available channel resource (CR) for transmission of the respective messages.
13 . The one or more NTCRM of claim 10 , wherein the freshness factor further includes a weight applied to a freshness of an information parameter or a weight applied to a remaining lifetime of information (RLoI) parameter.
14 . The one or more NTCRM of claim 10 , wherein the CROSS entity is a multi-channel operation (MCO) CROSS (MCO_CROSS) entity or a decentralized congestion control (DCC) CROSS (DCC_CROSS) entity, and the FAC entity is a multi-channel operation (MCO) FAC (MCO_FAC) entity or a decentralized congestion control (DCC) FAC (DCC_FAC) entity.