Road-side network node and method to operate the road-side network node

Abstract

A road-side network node for operation in an adhoc radio communications network is provided. The road-side network node includes a processor, a memory, a radio module, and an antenna. The road-side network node is configured to: determine data to be transmitted via an adhoc radio channel; determine or provide an adhoc time slice reserved for transmissions via the adhoc radio channel; and start a transmission of the data via the adhoc radio channel during the adhoc time slice.

What is claimed is: 
     
         1 . A road-side network node for operation in an adhoc radio communications network, the road-side network node comprising:
 a processor;   a memory;   a radio module; and   an antenna;   wherein the road-side network node is configured to:
 determine data to be transmitted via an adhoc radio channel; 
 determine or provide an adhoc time slice reserved for transmissions via the adhoc radio channel; and 
 start a transmission of the data via the adhoc radio channel during the adhoc time slice. 
   
     
     
         2 . The road-side network node according to  claim 1 , wherein the road-side network node is configured to:
 synchronize a local clock to a common time source signal;   determine expected boundaries of an a-priori known time duration of a frame unit, including determining subframe boundaries, of a cell-supported radio communications network in dependence on a clock signal of the local clock;   determine a status of the adhoc radio channel;   determine an occupancy of the adhoc radio channel in dependence on the expected boundaries and in dependence on the status of the adhoc radio channel; and   determine the adhoc time slice in dependence on the occupancy.   
     
     
         3 . The road-side network node according to  claim 2 , wherein the road-side network node is configured to:
 determine the occupancy as a first occupancy of the adhoc radio channel with adhoc traffic, when the status indicates a contiguous transmission with at least one transmission boundary not being an expected boundary.   
     
     
         4 . The road-side network node according to  claim 2 , wherein the road-side network node is configured to:
 determine the occupancy as a second occupancy of the adhoc radio channel with non-adhoc traffic, when the status indicates a contiguous transmission with both transmission boundaries being an expected boundary.   
     
     
         5 . The road-side network node according to  claim 1 , wherein the adhoc time slice is provided via a pre-configured resource pool. 
     
     
         6 . The road-side network node according to  claim 5 , wherein the road-side network node is configured to:
 synchronize a local clock to the common time source signal;   determine the adhoc time slice in dependence on the clock signal of the local clock and in dependence on a global start time reference of the pre-configured resource pool.   
     
     
         7 . The road-side network node according to  claim 1 , wherein the road-side network node is configured to:
 start the transmission of the data via the adhoc radio channel during one of the adhoc time slices omitting a start during a guard interval arranged at an end of the adhoc time slice.   
     
     
         8 . A method to operate a road-side network node, the method comprising the following steps:
 determining data to be transmitted via an adhoc radio channel;   determining or providing an adhoc time slice reserved for transmissions via the adhoc radio channel; and   starting a transmission of the data via the adhoc radio channel during the adhoc time slice.