Method and device for indicating resource collision
A pointing device and resource technology, applied in the field of communication, can solve problems such as huge FI overhead
Active Publication Date: 2019-09-17
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology
[0006] Embodiments of the present invention provide a resource collision indication method and device to solve the problem of excessive FI overhead in the prior art
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[0067] In order to solve the problem of excessive FI overhead in the prior art, in the embodiment of the present invention, instead of using FI to notify other terminals of resource usage status, an alternative solution is provided. Specifically: by dividing subframes in a frame period into two parts: service subframes and collision indication subframes, and establishing a mapping relationship between service subframes and collision indication subframes, when it is determined that a collision occurs in a certain service subframe, The collision indication information is notified to other terminals on the corresponding collision indication subframe, thereby reducing the overhead of the system for sending safety messages and reducing the system operating load.
[0068] The preferred solutions of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0069] In the embodiment of the present invention, after a cert...
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Disclosed are a resource collision indication method and apparatus, so as to reduce overheads of collision indication information. The method comprises: a first terminal separately performs signal monitoring on each service subframe not occupied by the first terminal on a current frame cycle, wherein when each service subframe arrives, the first terminal determines whether the service subframe is a collision service subframe; when the current frame cycle ends, the first terminal separately determines a collision indication subframe corresponding to the each collision service subframe according to a preset mapping relationship; and when each collision indication subframe arrives and the first terminal determines at least one collision service subframe exists in service subframes corresponding to the collision indication subframe, the first terminal correspondingly sends collision indication information of the collision service subframe on an indication unit corresponding to the collision indication subframe. In this way, it is not required to use FI to notify another terminal of resource use condition, so that overheads of collision indication information is greatly reduced, thereby reducing system operation loads.
Description
technical field [0001] The present invention relates to the field of communication technology, in particular to a resource collision indication method and device. Background technique [0002] During the time slot Aloha (ALOHA) collision discovery process in the Internet of Vehicles, the terminal based on the set subframe period (assuming that it contains N subframes), in each subframe period, in the selected transmission subframe while sending service data, the terminal needs to send frame information (Frame Information, FI), wherein FI is composed of information of N subframes in the subframe period, and the information of each subframe includes 8-bit temporary identification ( Source Temporary Identifier, STI) and 2-bit status information (STATUS). Wherein, the specific meaning of the state information is: an idle state, an occupied state, a collision state or a two-hop neighboring node occupied state. [0003] Obviously, since the FI sent by the terminal needs to conta...
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IPC IPC(8): H04W74/08
Inventor 周海军冯媛房家奕赵丽
Owner DATANG MOBILE COMM EQUIP CO LTD