Cell configuration for V2X communications in a wireless network

A method comprising:

• receiving, by a base station from a wireless device, a first message comprising a frequency band combination configuration comprising a first sequence of a plurality of frequency band parameters, a first frequency band parameter in the first sequence comprising:
• a first frequency band identifier indicating a first frequency band;
• a first radio configuration parameter;
• and
• at least one parameter indicating whether at least one V2X configuration is supported in the first frequency band;
• transmitting, employing the first message, a second message comprising configuration parameters of at least one cell operating in one of the plurality of frequency bands in the first sequence;
• transmitting, by the base station to a second base station and in response to the base station making a handover decision for the wireless device, the first sequence of the plurality of parameters;
• receiving, from the second base station, a second message comprising an information element indicating configuration parameters of at least one semi-persistent scheduling (SPS), the configuration parameters comprising:
• an uplink SPS radio network temporary identifier (RNTI);
• an SPS configuration index indicating an index of at least one uplink SPS configuration parameter;
• and
• the at least one uplink SPS configuration parameter;
• and
• transmitting, to the wireless device, a third message comprising the information element indicating the configuration parameters of the at least one SPS configuration.

A base station comprising:

• one or more processors;
• memory storing instructions that, when executed by the one or more processors, cause the base station to:
• receive, by a base station from a wireless device, a message comprising a first sequence of a plurality of capability parameters, a first capability parameter in the first sequence indicating whether a vehicle-to-everything (V2X) transmission configuration is supported in a first frequency band combination, wherein:
• the first frequency band combination is in a second sequence of a plurality of frequency band combinations associated with the wireless device;
• an index of the first capability parameter in the first sequence identifies the first frequency band combination in the second sequence;
• and
• the first frequency band combination comprises a third sequence of one or more frequency band identifiers each indicating a specific frequency band;
• and
• transmit, based on the message, a second message comprising configuration parameters of at least one cell for V2X communications, wherein the at least one cell operates in one of the plurality of frequency band combinations that supports the V2X transmission configuration.