Target area selection method, device and system, obu, rsu
A target area, regional technology, applied in the field of communication, can solve the problem of continuous implementation of the Internet of Vehicles business, and achieve the effect of improving efficiency
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Embodiment 1
[0100] The application scenario of this embodiment is: LTE->DRSC; wherein, this application scenario can be subdivided into two sub-scenes: (1) the target cell has only DSRC coverage; (2) the target cell has DSRC and LTE coverage.
[0101] Figure 5 It is a schematic diagram of realizing V2X service continuity when the target cell has only DSRC coverage according to an optional embodiment of the present invention, based on the schematic diagram Figure 5The steps of the present embodiment 1 method include:
[0102] Step S301: RRC-Idle OBU cell reselect cell reselection;
[0103] Among them, the idle state OBU obtains cell reselection parameters according to the broadcast message in the source LTE cell or RRC dedicated signaling: such as priority, R criterion parameters, etc. When the idle state OBU moves out of the LTE cell, it reselects to the target DSRC according to the above parameters cell, the key point here is: LTE needs to set the target DSRC cell identity as a highe...
Embodiment 2
[0138] The application scenario in this embodiment is DRSC->LTE, wherein the application scenario also includes two sub-scenes: (1) the target cell has only LTE coverage; (2) the target cell has DSRC and LTE coverage.
[0139] Figure 7 is a schematic diagram of realizing V2X service continuity when the target cell has only LTE coverage according to an optional embodiment of the present invention, based on the schematic Figure 7 The steps of the method of this embodiment include:
[0140] Step S501: idle OBU cell reselect;
[0141] Among them, the idle state OBU cell reselection criterion in the DSRC cell is not clear, if it is similar to LTE cell reselection, then use the method in 3.1.1-1) to realize cell reselection; otherwise, it needs to be carried out according to the rules of DSRC, such as OBU Leaving DSRC coverage and entering LTE coverage, OBU detects an LTE cell and supports V2X (indicated in a broadcast message), then the OBU cell selects an LTE cell.
[0142] T...
Embodiment 3
[0161] Figure 10 is a schematic diagram of implementing V2X service continuity during switching between DSRCs according to this embodiment, as shown in Figure 10 As shown, the business continuity related parameters are transmitted through the above interface, and cell reselection or handover is performed to ensure the continuity of the V2X service. For the idle state OBU: the OBU will provide the frequency of the V2X service as the highest priority cell reselection frequency ; For connected state OBU: RSU preferentially selects the cell that provides the V2X service required by the OBU as the target cell for handover.
[0162] There is an interface between DSRC-RSUs, and the above-mentioned relevant parameters can be transferred through the interface between D-RSUs. Considering the regularity of OBU movement, for example, the direction and speed of vehicles on the highway generally do not change much. The source cell RSU can notify the target RSU of the above information in...
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