CN-122028054-A - Distribution method, device, equipment and medium of Internet of vehicles spectrum

CN122028054ACN 122028054 ACN122028054 ACN 122028054ACN-122028054-A

Abstract

The application discloses a distribution method, a device, equipment and a medium of a vehicle networking frequency spectrum, and belongs to the technical field of vehicle communication. The method comprises the steps of obtaining total bandwidth of a frequency spectrum of a base station, the number of terminal users connected with the base station, idle bandwidth of a free frequency spectrum and replaceable coefficients of the frequency spectrum, service security weight, unit frequency spectrum income and transmission frequency spectrum efficiency of each cognitive user, wherein the service security weight is used for representing service security, and determining optimal shared bandwidth rented to each cognitive user in the free frequency spectrum and optimal unit frequency spectrum renting price given by each cognitive user according to the total bandwidth, the number of terminal users, the idle bandwidth, the replaceable coefficients, each service security weight, each unit frequency spectrum income and each transmission frequency spectrum efficiency, a preset profit function of an authorized user and a preset profit function of the cognitive user. The method can allocate the idle frequency spectrum of the authorized user to the cognitive user, and improves the utilization rate of the frequency spectrum.

Inventors

Tong Beining
ZHAO YIMING
LUO XUERONG
LIU ZECHENG
XIONG JI

Assignees

东风汽车集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260326

Claims (10)

1. A method for allocating a spectrum of internet of vehicles, the method comprising: acquiring the total bandwidth of the frequency spectrum of a base station, the number of terminal users connected with the base station, the idle bandwidth of a idle frequency spectrum, the substitutable coefficient of the frequency spectrum, and the service security weight, unit frequency spectrum income and transmission frequency spectrum efficiency of each cognitive user, wherein the service security weight is used for representing the security of the service; determining an optimal shared bandwidth leased to each cognitive user in the idle spectrum and an optimal unit spectrum leasing price given by each cognitive user according to the total bandwidth, the number of terminal users, the idle bandwidth, the alternative coefficient, each business security weight, each unit spectrum income and each transmission spectrum efficiency, and a preset profit function of an authorized user and a profit function of the cognitive user; The profit function of the authorized user is a relation function of the total bandwidth, the number of the terminal users, the idle bandwidth, the replaceable coefficient, the business safety weight, the shared bandwidth, the unit spectrum renting price and the profit of the authorized user, and the profit function of the cognitive user is a relation function of the business safety weight, the unit spectrum income, the transmission spectrum efficiency, the shared bandwidth, the unit spectrum renting price and the profit of the cognitive user.
2. The method for allocating spectrum to internet of vehicles according to claim 1, wherein the determining an optimal shared bandwidth leased to each cognitive user and an optimal unit spectrum lease price given by each cognitive user according to the total bandwidth, the number of end users, the idle bandwidth, the alternative coefficient, each business security weight, each unit spectrum income and each transmission spectrum efficiency, and a preset profit function of an authorized user and profit function of a cognitive user comprises: the emergency type of each cognitive user is obtained, and the emergency type comprises an emergency vehicle and a non-emergency vehicle; determining an emergency compensation coefficient corresponding to the emergency type of each cognitive user; compensating the profit function of the authorized user by using the emergency compensation coefficient to obtain the profit compensation function of the authorized user; And determining the optimal shared bandwidth leased to each cognitive user and the optimal unit spectrum leasing price given by each cognitive user according to the total bandwidth, the number of end users, the idle bandwidth, the alternative coefficient, each business security weight, each unit spectrum income and each transmission spectrum efficiency, the profit compensation function of the authorized user and the profit function of the cognitive user.
3. The method for allocating internet of vehicles spectrum according to claim 1, wherein the cognitive user profit function is a multi-objective profit function, and the multi-objective profit function includes a delay penalty coefficient, and the delay penalty coefficient is determined according to the service priority of the cognitive user.
4. The method for allocating internet of vehicles spectrum according to claim 1, wherein the cognitive user profit function is a multi-objective profit function, and the multi-objective profit function includes a transmission quality profit coefficient, and the transmission quality profit coefficient is determined according to the service priority of the cognitive user.
5. The allocation method of internet of vehicles spectrum according to claim 2, wherein said determining an optimal shared bandwidth leased to each cognitive user and an optimal unit spectrum lease price given by each cognitive user according to the total bandwidth, the number of end users, the idle bandwidth, the alternative coefficient, each traffic security weight, each unit spectrum income and each transmission spectrum efficiency, and the authorized user profit compensation function and the cognitive user profit function comprises: Solving the partial derivative of the shared bandwidth for the profit compensation function of the authorized user, and enabling the derivative result to be equal to 0, so as to obtain the shared bandwidth function when the profit function of the authorized user is maximized; Solving a partial derivative of the lease price of the unit spectrum for the profit function of the cognitive user, and enabling the result of the derivative to be equal to 0 to obtain an objective function; And obtaining an optimal shared bandwidth leased to each cognitive user and an optimal unit spectrum leasing price given by each cognitive user based on the shared bandwidth function and the objective function, the total bandwidth, the number of end users, the idle bandwidth, the replaceable coefficient, each business security weight, each unit spectrum income and each transmission spectrum efficiency.
6. The allocation method of internet of vehicles spectrum according to claim 1, wherein the obtaining the total bandwidth of the spectrum of the base station, the number of end users connected to the base station, the idle bandwidth of the idle spectrum, the replaceable coefficient of the spectrum, the traffic security weight of each cognitive user, the unit spectrum income, and the transmission spectrum efficiency comprises: acquiring the service priority, the channel signal-to-noise ratio, the Doppler frequency offset coefficient and the interference suppression coefficient of each cognitive user; determining the service error rate of the corresponding cognitive user according to each service priority; and determining the transmission spectrum efficiency of each cognitive user according to the service error rate, the channel signal-to-noise ratio, the Doppler frequency offset coefficient and the interference suppression coefficient of each cognitive user.
7. The method for allocating a spectrum of an internet of vehicles according to claim 6, wherein determining the transmission spectrum efficiency of each cognitive user according to the service error rate, the channel signal-to-noise ratio, the doppler frequency offset coefficient and the interference suppression coefficient of each cognitive user comprises: Acquiring a driving scene of each cognitive user, wherein the driving scene comprises a high-speed scene and a low-speed scene; determining the Doppler frequency offset coefficient weight corresponding to the driving scene of each cognitive user; and determining the transmission spectrum efficiency of each cognitive user according to the service error rate, the channel signal-to-noise ratio, the Doppler frequency offset coefficient weight and the interference suppression coefficient of each cognitive user.
8. An apparatus for allocating spectrum of internet of vehicles, the apparatus comprising: The system comprises an acquisition module, a service security weight, a unit spectrum income and a transmission spectrum efficiency, wherein the acquisition module is used for acquiring the total bandwidth of a frequency spectrum of a base station, the number of terminal users connected with the base station, the idle bandwidth of a idle frequency spectrum, the substitutable coefficient of the frequency spectrum, and the service security weight, the unit spectrum income and the transmission spectrum efficiency of each cognitive user; The determining module is used for determining an optimal shared bandwidth leased to each cognitive user in the idle frequency spectrum and an optimal unit frequency spectrum leasing price given by each cognitive user according to the total bandwidth, the number of terminal users, the idle bandwidth, the substitutional coefficient, each business security weight, each unit frequency spectrum income and each transmission frequency spectrum efficiency, and a preset profit function of an authorized user and a profit function of the cognitive user; The profit function of the authorized user is a relation function of the total bandwidth, the number of the terminal users, the idle bandwidth, the replaceable coefficient, the business safety weight, the shared bandwidth, the unit spectrum renting price and the profit of the authorized user, and the profit function of the cognitive user is a relation function of the business safety weight, the unit spectrum income, the transmission spectrum efficiency, the shared bandwidth, the unit spectrum renting price and the profit of the cognitive user.
9. An electronic device comprising a memory and a processor, the memory and the processor being communicatively coupled to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the method of any of claims 1-7.
10. A computer readable storage medium having stored thereon computer instructions for causing the computer to perform the method of any one of claims 1-7.

Description

Distribution method, device, equipment and medium of Internet of vehicles spectrum Technical Field The present application relates to the field of vehicle communications technologies, and in particular, to a method, an apparatus, a device, and a medium for allocating a spectrum of a vehicle networking. Background Cellular internet of vehicles is an emerging technology that can use the 4G/5G standard to implement vehicle communications, and mainly includes two communication interfaces, one is a short-range direct communication interface (PC 5) between vehicles, between vehicles and people, and between vehicles and roads, and the other is a cellular communication interface (Uu) between terminals and base stations, such as vehicles, cell phones, and other intelligent devices. The spectrum resource is increasingly important as a basic resource for vehicle communication, and the research on the spectrum resource allocation method has great practical significance. In the prior art, a fixed spectrum allocation policy is adopted, a base station allocates a designated spectrum to an authorized user, and the authorized user can use the designated spectrum for communication. However, when the authorized user does not send information, the corresponding designated spectrum is in an idle state, which causes the designated spectrum to be underutilized, resulting in spectrum resource waste. Disclosure of Invention In view of the above problems, the present application provides a method, an apparatus, a device, and a medium for allocating a spectrum of an internet of vehicles, which solve the above problems, and can rent a free spectrum to a cognitive user, thereby improving the spectrum utilization rate and reducing the spectrum resource waste. In a first aspect, the present application provides a method for allocating a spectrum of internet of vehicles, the method comprising: acquiring the total bandwidth of the frequency spectrum of a base station, the number of terminal users connected with the base station, the idle bandwidth of a idle frequency spectrum, the substitutable coefficient of the frequency spectrum, and the service security weight, unit frequency spectrum income and transmission frequency spectrum efficiency of each cognitive user, wherein the service security weight is used for representing the security of the service; determining an optimal shared bandwidth leased to each cognitive user in the idle spectrum and an optimal unit spectrum leasing price given by each cognitive user according to the total bandwidth, the number of terminal users, the idle bandwidth, the alternative coefficient, each business security weight, each unit spectrum income and each transmission spectrum efficiency, and a preset profit function of an authorized user and a profit function of the cognitive user; The profit function of the authorized user is a relation function of the total bandwidth, the number of the terminal users, the idle bandwidth, the replaceable coefficient, the business safety weight, the shared bandwidth, the unit spectrum renting price and the profit of the authorized user, and the profit function of the cognitive user is a relation function of the business safety weight, the unit spectrum income, the transmission spectrum efficiency, the shared bandwidth, the unit spectrum renting price and the profit of the cognitive user. In a second aspect, the present application provides an allocation apparatus for a spectrum of internet of vehicles, the apparatus comprising: The system comprises an acquisition module, a service security weight, a unit spectrum income and a transmission spectrum efficiency, wherein the acquisition module is used for acquiring the total bandwidth of a frequency spectrum of a base station, the number of terminal users connected with the base station, the idle bandwidth of a idle frequency spectrum, the substitutable coefficient of the frequency spectrum, and the service security weight, the unit spectrum income and the transmission spectrum efficiency of each cognitive user; The determining module is used for determining an optimal shared bandwidth leased to each cognitive user in the idle frequency spectrum and an optimal unit frequency spectrum leasing price given by each cognitive user according to the total bandwidth, the number of terminal users, the idle bandwidth, the substitutional coefficient, each business security weight, each unit frequency spectrum income and each transmission frequency spectrum efficiency, and a preset profit function of an authorized user and a profit function of the cognitive user; The profit function of the authorized user is a relation function of the total bandwidth, the number of the terminal users, the idle bandwidth, the replaceable coefficient, the business safety weight, the shared bandwidth, the unit spectrum renting price and the profit of the authorized user, and the profit function of the cognitive user is a relation function of the business sa