Vehicle-mounted wireless short-distance communication system and communication resource allocation method thereof

Abstract

The invention discloses a vehicle-mounted wireless short-distance communication system and a communication resource allocation method thereof. The vehicle-mounted wireless short-distance communication system comprises an advanced G node and at least one general G node, the communication resource allocation method comprises the following steps: responding to at least one general G node to request a communication resource from an advanced G node, and respectively generating priority information of the general G node according to the priority of a logic channel requested by the current communication resource of each general G node; at least one general G node of the to-be-requested communication resource sends request information including own priority information to the advanced G node; and in response to the request information, received by the high-level G node, of the at least one general G node of the to-be-requested communication resource, distributing the communication resource to the at least one general G node in sequence based on the priority information decline sequence. According to the invention, a stable and effective resource allocation mechanism is provided, the vehicle-mounted communication efficiency and accuracy are improved, and the timeliness and rationality of data transmission are improved.

Description

technical field [0001] The invention relates to the technical field of automobile communication, in particular to a vehicle wireless short-distance communication system and a communication resource allocation method thereof. Background technique [0002] Vehicle-mounted wireless short-range communication system refers to the interconnection and communication between vehicle-mounted devices, mainly including cockpit domain controller, vehicle-mounted terminal (for example, vehicle-mounted audio equipment, vehicle-mounted video equipment, anti-theft system), smart phones, and smart wearable devices. system. [0003] refer to figure 1 In the example in , in the vehicle-mounted wireless short-distance communication system, there are mainly two kinds of nodes, which are G node (Grant Node, management node) and T node (Terminal Node, terminal node, ie managed node). Among them, the main functions of the G node are to send synchronization signals and broadcast information, send h...

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a vehicle-mounted wireless short-distance communication system and its communication resource allocation method in order to overcome the defects of low communication efficiency and accuracy of the vehicle-mounted wireless short-distance communication system in the prior art

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