Service delivery methods and service-providing device

A service transmission method for a service providing device, wherein the service providing device is adapted to interact with a service application device connected via a wireless network, wherein the service delivery method comprising the steps of: (A) enabling said service-providing device to receive a service request signal from the service application device within a control channel time period, wherein the service request signal is a service request of the service application device includes (503); (B1) Empower the service-providing device to receive the service request in a wireless polling list (504); (B2) enabling said service-providing device to determine a signal strength of the service application device according to the service request signal (505); (C1) Empower the service-providing device to determine a communication coverage of the service application device according to the signal strength (506); (C2) enabling said service-providing device to define a service schedule for the service application apparatus of the communication coverage area and the recorded in the radio polling list service request (507); and (D) Empower the service-providing device to send within a service channel time period according to the service schedule a service-polling signal, so that the service application device can access a specified by the service polling signal service resource, the service-providing device a roadside unit, the service application device is a driving-side unit and the wireless network is a wireless access a vehicle-based and dedicated short-range communication network technology (WAVE / DSRC) is.