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A time slot allocation method and system

A time slot allocation and time slot technology, applied in the field of communication, to achieve the effect of preventing resource collisions

Active Publication Date: 2018-04-17
DATANG GOHIGH INTELLIGENT & CONNECTED TECH (CHONGQING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a time slot allocation method and system, which are used to solve the time slot allocation problem under the condition of multiplexing time slot resources in the Internet of Vehicles environment, and prevent resource collisions when vehicles select idle time slots

Method used

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  • A time slot allocation method and system
  • A time slot allocation method and system
  • A time slot allocation method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1: The vehicle reports its own vehicle identification, current location information, and time slot information that is no longer occupied to the time slot information collection module in the system.

[0060] Assume that the current time slot is 2, and the time slots occupied by vehicles A, B, and C are respectively time slot 0, time slot 2, and time slot 5. The content reported by vehicle A is (vehicle identification (A), current location (A), (abandoned time slot)), if the time slot that vehicle A no longer occupies, that is, the abandoned time slot is time slot 0, the reported content is ( Vehicle identity (A), current position (A), (0)), where A represents the identity of vehicle A, and 0 represents the time slot 0 that vehicle A decides to give up.

Embodiment 2

[0061] Embodiment 2: When the high-level business of the vehicle needs to apply for a new free time slot, the vehicle sends an application to the time slot information application module in the system, and the time slot information release module in the system distributes information to the vehicle

[0062]When vehicle A receives a high-level new service data packet, for example, the maximum cache time required in the high-level service parameters is 6ms, the application information sent by vehicle A is (vehicle identification (A), current location (A), 6), where , 6 means that the maximum cache time required in the high-level service parameters is 6ms. If the system decides to allocate a new time slot 3 to vehicle A, the information released by the system to vehicle A is (vehicle ID (A), 3), where A represents the ID of vehicle A, and 3 means that the system decides to allocate a new time slot to vehicle A time slot 3.

Embodiment 3

[0063] Embodiment 3: The operation of the time slot occupancy state maintenance and update module on the time slot occupancy state table

[0064] Assuming that the current time slot is 2, and the time slots occupied by vehicles A, B, and C are respectively time slot 0, time slot 2, and time slot 5, the time slot occupancy status table is shown in Table 1:

[0065]

[0066] Table 1

[0067] If the occupied time slot of the vehicle remains unchanged, only the current position of each vehicle needs to be updated in Table 1.

[0068] If vehicle A receives time slot 3 allocated by the system for its new service in time slot 4, then in time slot 4, the time slot occupancy status table is shown in Table 2:

[0069]

[0070] Table 2

[0071] After that, if vehicle A decides to give up the self-occupied time slot 0 in time slot 6, then in time slot 6, the time slot occupancy state table is shown in Table 3:

[0072]

[0073] table 3

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Abstract

The invention relates to a time slot allocation method and system, and aims to solve the problem of time slot allocation under a time slot resource multiplexing condition in an Internet of vehicles environment and prevent resource collision during selection of idle time slots for vehicles. The method comprises the following steps: a time slot information acquisition module acquires the identifier of a vehicle, current location information and unoccupied time slot information; a time slot occupation state updating and maintaining module maintains a time slot resource occupation state table according to the information; when a time slot information application module receives an application time slot request of the vehicle, an idle time slot matching module allocates time slot resources to the vehicle according to the application time slot request of the vehicle and the currently-maintained time slot resource occupation state table.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a time slot allocation method and system. Background technique [0002] In the Internet of Vehicles, vehicle-related applications, especially safety applications, require the vehicle to periodically broadcast its location and other information to surrounding vehicles, which inevitably involves the utilization of time slot resources. [0003] The time slot resource of the vehicle is either obtained through the vehicle's own competition, such as using carrier sense multiple access (CAMA) / collision detection (CA) or based on a time slot allocation mechanism, and the vehicle accepts the time slot allocated to itself. When a vehicle competes for a time slot, it randomly selects among the perceived free time slots. Generally, multiple vehicles randomly select multiple free time slots. For the time slot allocation mechanism in which vehicles do not compete, the entity th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/029H04W4/40H04W72/04
CPCH04W72/0446H04W74/085
Inventor 林琳房家奕赵毅冯媛
Owner DATANG GOHIGH INTELLIGENT & CONNECTED TECH (CHONGQING) CO LTD
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