# US 2019/0320380 A1 · Intelligent transport system message control method and arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0320380 A1 - Document ID: US20190320380A1 - Status: Published application - Kind: A1 - Application number: 16/343,431 - Filed: 2016-10-21 - Published: 2019-10-17 - Earliest claimed: 2016-10-21 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Tomas NYLANDER; Lisa BOSTRÖM; Stefan RUNESON - Web page: https://patentgrep.com/patent/US20190320380A1 ## CPC - H04W 48/16: Discovering, processing access restriction or access information - H04W 4/38: for collecting sensor information - H04W 48/02: Access restriction performed under specific conditions - H04W 48/10: using broadcasted information - H04L 12/1886: {with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains} - H04W 28/0247: {based on conditions of the access network or the infrastructure network (central resource management H04W28/16)} - H04W 28/0273: {adapting protocols for flow control or congestion control to wireless environment, e.g. adapting transmission control protocol [TCP] (wireless network protocols or protocol adaptations to wireless operation, e.g. wireless application protocol H04W80/00)} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method for message control in a cooperative intelligent transport system comprises creating (S3) of a transmission restriction control message. The transmission restriction control message comprises restriction instructions, defining how a transmission restriction demand is to be applied by an on board unit, and validity information. The transmission restriction control message is broadcasted (S4). A method for message control in a cooperative intelligent transport system comprises receiving, in an on board unit, a transmission restriction control message. The transmission restriction control message comprises restriction instructions, defining how a transmission restriction demand is to be applied by the on board unit, and validity information. It is determined whether or not the on board unit fulfils the validity information. If the on board unit fulfils the validity information, the transmissions of messages from the on board unit are adapted according to the restriction instructions. Corresponding apparatuses are also disclosed. ## Claims ### Claim 1 A method for message control in a cooperative intelligent transport system, wherein said method comprises: creating a transmission restriction control message; said transmission restriction control message comprising: i) restriction instructions defining how a transmission restriction demand is to be applied by an on board unit; and ii) validity information; and broadcasting said transmission restriction control message. ### Claim at position 2 2-19. (canceled) ### Claim 20 A method for message control in a cooperative intelligent transport system, wherein said method comprises: receiving, in an on board unit, a transmission restriction control message, said transmission restriction control message comprising: i) restriction instructions defining how a transmission restriction demand is to be applied by said on board unit and ii) validity information; determining whether or not said on board unit fulfils said validity information; and as a result of determining that said on board unit fulfils said validity information, adapting transmissions from said on board unit of messages according to said restriction instructions. ### Claim at position 4 21-34. (canceled) ### Claim 35 A node configured for communication with on board units in a cooperative intelligent transport system, wherein said node is configured to: create a transmission restriction control message comprising: i) restriction instructions defining how a transmission restriction demand is to be applied by an on board unit and ii) validity information; and broadcast said transmission restriction control message. ### Claim 36 (depends on 35) The node of claim 35, wherein said node comprises a processor and a memory, said memory comprising instructions executable by the processor, whereby the processor is operative to create said transmission restriction control message. ### Claim 37 (depends on 35) The node of claim 35, wherein said node comprises communication circuitry configured to broadcast said transmission restriction control message. ### Claim 38 (depends on 35) The node of claim 35, wherein said validity information comprises an identification of a restriction area for which said transmission restriction demand is valid. ### Claim at position 9 39-40. (canceled) ### Claim 41 (depends on 35) The node of claim 35, wherein said validity information comprises a definition of a restriction time interval for which said transmission restriction demand is valid. ### Claim 42 (depends on 35) The node of claim 35, wherein said restriction instructions comprises a definition of messages to which said transmission restriction demand is to be applied. ### Claim 43 (depends on 42) The node of claim 42, wherein said definition of messages to which said transmission restriction demand is to be applied comprises at least one of message types, message priority, and messages transmitted from particular types of transmitting nodes. ### Claim 44 (depends on 35) The node claim 35, wherein said restriction instructions comprises a requested transmission timing of messages to which said transmission restriction demand is to be applied. ### Claim 45 (depends on 44) The node of claim 44, wherein said requested transmission timing comprises at least one of a shortest allowed time between successive transmissions and no transmissions at all permitted. ### Claim 46 (depends on 35) The node of claim 35, wherein said node is configured to perform said broadcasting repeatedly, regularly or intermittently. ### Claim 47 (depends on 35) The node of claim 35, wherein said node is configured to perform said broadcasting over a dedicated wireless communication resource. ### Claim 48 (depends on 35) The node of claim 35, wherein said node is further configured to obtain a transmission restriction policy, whereby said creating of said transmission restriction control message is performed according to said obtained restriction policy. ### Claim 49 (depends on 48) The node of claim 48, wherein said node is configured to perform said obtaining of said transmission restriction policy by receiving said transmission restriction policy from a control node of said cooperative intelligent transport system. ### Claim 50 (depends on 48) The node of claim 48, wherein said transmission restriction policy comprises definitions of time intervals during which said broadcasting is to be performed, compulsory or conditionally. ### Claim 51 (depends on 35) The node of claim 35, wherein said node is configured to perform said creating trigged by an external event. ### Claim 52 (depends on 35) The node of claim 35, wherein said node is further configured to measure a load in the transmission resources dedicated to said cooperative intelligent transport system, whereby said node is configured to trig said creating if said measured load exceeds a predetermined threshold. ### Claim at position 22 53-54. (canceled) ### Claim 55 An on board unit of a cooperative intelligent transport system, wherein said on board unit is configured to: receive a transmission restriction control message, said transmission restriction control message comprising: i) restriction instructions defining how a transmission restriction demand is to be applied by said on board unit and ii) validity information; determine whether or not said on board unit fulfils said validity information; and adapt, if said on board unit fulfils said validity information, transmissions from said on board unit of messages according to said restriction instructions. ### Claim at position 24 56-69. (canceled) ### Claim 70 (depends on 20) A computer program product comprising a non-transitory computer readable medium storing a computer program comprising instructions, which when executed by at least one processor of a device, cause the device to perform the method of claim 20. ### Claim at position 26 71-74. (canceled)