Semi-persistent resource allocation for V2V traffic
The invention relates to an improved semi-persistent resource allocation for a mobile terminal (MT) for transmitting periodic data. The MT transmits information on the periodic data to the radio base station (BS), such that the BS determines the different possible transmission periodicities and/or the different possible message sizes of the data components of the periodic data. The MT receives from the BS plural semi-persistent resource (SPS) configurations, each being usable to transmit at least one of the supported data components. The MT indicates to the BS the data components that are to be transmitted by the MT. The MT receives from the BS an activation command to activate one or more of the SPS configurations to periodically allocate radio resources for the MT to transmit each of the indicated data components. The MT then transmits the one or more data components based on the radio resources and the transmission periodicity as configured by the activated one or more SPS configurations.
1. An integrated circuit configured to control a process of a vehicular mobile terminal to transmit periodic data to one or more receiving entities, wherein the process includes:
transmitting, to a radio base station, information on the periodic data including information related to vehicle parameters supported by the vehicular mobile terminal, the information on the vehicle parameters usable by the radio base station to determine different possible transmission periodicities of one or more data components of the periodic data,
in response to one of the vehicle parameters in a previous value range changing to be in a different value range, transmitting, to the radio base station, information related to the changed vehicle parameter,
indicating, to the radio base station, that the one or more data components of the periodic data are available to be transmitted from the vehicular mobile terminal to the one or more receiving entities,
receiving, from the radio base station, a plurality of semi-persistent radio resource configurations configured by the radio base station based on the information on the periodic data, each of the plurality of semi-persistent radio resource configurations usable to transmit at least one of the one or more data components of the periodic data,
receiving, from the radio base station, an activation command to activate one or more of the plurality of semi-persistent radio resource configurations, selected by the radio base station based on the information related to the changed vehicle parameter, to periodically allocate radio resources used to transmit the one or more data components of the periodic data, and
transmitting, to the one or more receiving entities, the one or more data components of the periodic data using the allocated radio resources and using the transmission periodicity defined by the activated one or more semi-persistent radio resource configurations.
2. The integrated circuit according to claim 1 , comprising:
circuitry, which, in operation, controls the process;
an input node, which is coupled to the circuitry and which, in operation, inputs data; and
an output node, which is coupled to the circuitry and which, in operation, outputs data.
3. The integrated circuit according to claim 1 , wherein the information on the periodic data includes at least one of:
information on a message size of at least one data component of the periodic data, which is transmitted together with a buffer status report, or
information on the one or more data components.
4. The integrated circuit according to claim 1 , wherein
the information on the periodic data is transmitted within one message, or
the information on the periodic data is transmitted within at least two separate messages, wherein information on the different possible periodicities is transmitted within a first message and information on a message size of at least one data component of the periodic data is transmitted together with a buffer status report.
5. The integrated circuit according to claim 1 , wherein each of the plurality of semi-persistent radio resource configurations identifies:
radio resources and a periodicity suitable for transmitting at least one of the one or more data components of the periodic data, wherein the plurality of semi-persistent radio resource configurations are received in a message of a Radio Resource Control (RRC) protocol, or
a periodicity for transmitting at least one of the one or more data components of the periodic data, wherein information on the radio resources usable by the vehicular mobile terminal to transmit at least one of the one or more data components of the periodic data is received together with the activation command in a message via a Physical Downlink Control Channel (PDCCH).
6. The integrated circuit according to claim 1 , wherein the data components, to be transmitted at the same time instance, are either transmitted as one message or as separate messages.
7. The integrated circuit according to claim 1 , wherein the receiving entities comprise other vehicular or non-vehicular mobile terminals and the periodic data are transmitted via a sidelink connection, and/or the receiving entities comprise the radio base station and the periodic data are transmitted via a radio connection.
8. The integrated circuit according to claim 1 , wherein the plurality of semi-persistent radio resource configurations are configured such that there is one semi-persistent radio resource configuration for each data component with a specific message size and a specific transmission periodicity.
9. An integrated circuit configured to control operation of a vehicular mobile terminal to transmit periodic data to one or more receiving entities, the integrated circuit comprising:
transmission circuitry configured to control:
transmitting, to a radio base station, information on the periodic data including information related to vehicle parameters supported by the vehicular mobile terminal, the information on the vehicle parameters usable by the radio base station to determine different possible transmission periodicities of one or more data components of the periodic data, and
in response to one of the vehicle parameters in a previous value range changing to be in a different value range, transmitting, to the radio base station, information related to the changed vehicle parameter, and
indicating, to the radio base station, that the one or more data components of the periodic data are available to be transmitted from the vehicular mobile terminal to the one or more receiving entities, and
reception circuitry configured to control:
receiving, from the radio base station, a plurality of semi-persistent radio resource configurations configured by the radio base station based on the information on the periodic data, each of the plurality of semi-persistent radio resource configurations usable to transmit at least one of the one or more data components of the periodic data, and
receiving, from the radio base station, an activation command to activate one or more of the plurality of semi-persistent radio resource configurations, selected by the radio base station based on the information related to the changed vehicle parameter, to periodically allocate radio resources used to transmit the one or more data components of the periodic data,
wherein
the transmission circuitry, in operation, controls transmitting, to the one or more receiving entities, the one or more data components of the periodic data using the allocated radio resources and using the transmission periodicity defined by the activated one or more semi-persistent radio resource configurations.
10. The integrated circuit according to claim 1 , wherein the information on the periodic data includes at least one of:
information on a message size of at least one data component of the periodic data, which is transmitted together with a buffer status report, or
information on the one or more data components.
11. The integrated circuit according to claim 1 , wherein
the information on the periodic data is transmitted within one message, or
the information on the periodic data is transmitted within at least two separate messages, wherein information on the different possible periodicities is transmitted within a first message and information on a message size of at least one data component of the periodic data is transmitted together with a buffer status report.
12. The integrated circuit according to claim 9 , wherein each of the plurality of semi-persistent radio resource configurations identifies:
radio resources and a periodicity suitable for transmitting at least one of the one or more data components of the periodic data, wherein the plurality of semi-persistent radio resource configurations are received in a message of a Radio Resource Control (RRC) protocol, or
a periodicity for transmitting at least one of the one or more data components of the periodic data, wherein information on the radio resources usable by the vehicular mobile terminal to transmit at least one of the one or more data components of the periodic data is received together with the activation command in a message via a Physical Downlink Control Channel (PDCCH).
13. The integrated circuit according to claim 9 , wherein the data components, to be transmitted at the same time instance, are either transmitted as one message or as separate messages.
14. The integrated circuit according to claim 9 , wherein the receiving entities comprise other vehicular or non-vehicular mobile terminals and the periodic data are transmitted via a sidelink connection, and/or the receiving entities comprise the radio base station and the periodic data are transmitted via a radio connection.
15. The integrated circuit according to claim 9 , wherein the plurality of semi-persistent radio resource configurations are configured such that there is one semi-persistent radio resource configuration for each data component with a specific message size and a specific transmission periodicity.