Method for performing communication between vehicle terminals and equipment

A technology between terminals and vehicles, applied in the field of mobile communication, can solve problems such as large delay, inability to ensure vehicle terminal security information, and no consideration of communication distance between vehicles, etc., to meet application requirements and reduce transmission delay.

Active Publication Date: 2016-08-03
DATANG MOBILE COMM EQUIP CO LTD
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AI-Extracted Technical Summary

Problems solved by technology

[0007] The inventor found that, in the broadcast/multicast communication mode, on the one hand, the communication distance between vehicles is not considered in the delineation of the broadcast range, which largely cannot ensure that the vehicle terminal can receive all the vehicle terminals within the communication distance. terminal security information; on the other hand, because the vehicle terminal information needs to be sent to the core network, and the S1 (communication interface between the base station and the packet core network) interface and the M1 interface (the interface between the base station and the MBMSGW...
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Method used

[0129] Here, the specific CSCAreaID and the cell ID mode that can be broadcasted are recorded for each cell by the access network side, that is, the complexity of the vehicle information sharing cell list is reduced...
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Abstract

The embodiment of the present invention provides a method and equipment for communication between vehicle terminals, including: the first base station receives the vehicle safety information reported by the vehicle terminal; according to the set maximum communication distance between the vehicle terminals, the shared information cell: carry the identification of the determined shared information cell in the vehicle safety information and send it to the second base station to which each cell belongs in the shared information cell, so that the second base station broadcasts the vehicle safety information to the shared information cell. A vehicle terminal in a cell within the coverage area of ​​the second base station. The solution of the embodiment of the present invention reduces the transmission delay of vehicle safety information to a large extent, and ensures that the vehicle terminal within the set maximum communication distance from the vehicle terminal can receive the vehicle safety information in a timely manner, that is, the vehicle safety information is satisfied. Application requirements for terminal communication.

Application Domain

Technology Topic

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  • Method for performing communication between vehicle terminals and equipment
  • Method for performing communication between vehicle terminals and equipment
  • Method for performing communication between vehicle terminals and equipment

Examples

  • Experimental program(1)

Example Embodiment

[0075] In the embodiment of the present invention, the first base station receives the vehicle safety information reported by the vehicle terminal; determines the shared information cell of the vehicle terminal according to the set maximum communication distance between the vehicle terminals; carries the identification of the determined shared information cell on the vehicle The safety information is respectively sent to the second base station to which each cell in the shared information cell belongs, so that the second base station broadcasts the vehicle safety information to the vehicle terminals in the cell in the coverage area of ​​the second base station in the shared information cell. After the first base station receives the vehicle safety information, it determines the shared information cell of the vehicle terminal according to the set communication distance between vehicles, and the first base station directly sends the information to the second cell to which each cell in the shared information cell belongs. The base station does not need to upload the vehicle safety information to the core network and forward it through the MBMSGW, and does not need to pass the M1 interface and the S1 interface, which greatly reduces the transmission delay of the vehicle safety information and ensures the distance from the vehicle terminal The vehicle terminal within the set maximum communication distance can receive vehicle safety information in a timely manner, which also meets the application requirements of vehicle terminal communication.
[0076] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings of the specification. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not used to limit the present invention. And if there is no conflict, the embodiments in the application and the features in the embodiments can be combined with each other.
[0077] The method and equipment provided by the present invention will be described in detail below with specific embodiments in conjunction with the accompanying drawings.
[0078] An embodiment of the present invention provides a method for communication between vehicle terminals, such as figure 1 As shown, it specifically includes the following steps:
[0079] Step 101: The first base station receives the vehicle safety information reported by the vehicle terminal;
[0080] The vehicle safety information is information used to evaluate the safety status of the vehicle terminal, that is, periodic basic vehicle safety messages, namely BSM (BasicSafetyMessage, basic safety information)/CAM (Cooperative AwarenessMessage, cooperative awareness information) or other similar messages, Contains basic information such as vehicle terminal location information, speed information, and vehicle terminal node attribute information.
[0081] Step 102: Determine the shared information cell of the vehicle terminal according to the set maximum communication distance between the vehicle terminals;
[0082] The shared information cell means that the vehicle terminal in the cell can share the vehicle safety information of the vehicle terminal in step 101. Similarly, the vehicle terminal in step 101 can also share the vehicle safety information of the vehicle terminal in the shared information cell;
[0083] The shared information cell of the vehicle terminal determined here includes the cell within the coverage of the first base station, and usually also includes the cell not under the coverage of the first base station;
[0084] The shared information cell may be one or several cells with a maximum communication distance between vehicles set in the cell where the vehicle terminal is located.
[0085] As for determining the number of cells within the set vehicle distance from the cell where the vehicle terminal is located, the number of cells to be selected as shared information cells can be further determined according to the type of security application\vehicle speed. For example: when the vehicle speed is relatively high, the communication distance (brake distance) between vehicles will be relatively large. When the vehicle speed is relatively low, the communication distance (braking distance) between vehicles will be relatively small.
[0086] Step 103: Broadcast the vehicle safety information to the vehicle terminals in the cell in the coverage area of ​​the first base station in the shared information cell, and carry the identified shared information cell identity in the vehicle safety information and send to the shared information cell respectively The second base station to which each cell belongs, so that the second base station broadcasts the vehicle safety information.
[0087] Preferably, the method further includes:
[0088] Receiving parameter information reported by the vehicle terminal, where the parameter information includes one or more of three types of information: current geographic location information of the vehicle terminal, cell information to which it belongs, and quality information of the measured link signal;
[0089] According to the set maximum communication distance between the vehicle terminals, determining the shared information cell of the vehicle terminal includes:
[0090] Determine the shared information cell of the vehicle terminal according to the set maximum communication distance between the vehicle terminals and the parameter information.
[0091] When obtaining the above parameter information reported by the vehicle terminal, the set maximum communication distance between the vehicle terminals can be combined with the parameter information, and the shared information area of ​​the vehicle terminal can be determined relatively accurately. The following two applications The scenario describes the method of communication between vehicle terminals.
[0092] Application scenario 1: In a typical urban cellular network deployment scenario, the distance between the first base station and neighboring base stations is not less than the set maximum communication distance between vehicle terminals;
[0093] At this time, the method of communication between vehicle terminals is as follows figure 2 As shown, including the following steps:
[0094] Step 201: The first base station receives parameter information reported by the vehicle terminal, where the parameter information includes the current geographic location information of the vehicle terminal;
[0095] The parameter information may also be information including the quality information of the measured link signal, or information including the quality information of the measured link signal and the current geographic location information of the vehicle terminal;
[0096] The measured quality information of the link signal may be, but is not limited to, RSRP (Reference Signal Receiving Power, reference signal received power).
[0097] Step 202: The first base station receives the vehicle safety information reported by the vehicle terminal;
[0098] The above step 201 and step 202 can be performed at the same time, or step 202 can be performed first, and then step 201 can be performed, which is not limited here;
[0099] Step 203: The first base station determines whether the vehicle terminal is in the edge area of ​​the coverage area of ​​the first base station according to the current geographic location information of the vehicle terminal; if yes, execute step 204; if not, execute step 205;
[0100] Wherein, the edge area of ​​the coverage area of ​​the first base station is the area outside and within the coverage area with the center of the coverage area of ​​the first base station as the center, and the radius is less than the first set value. The difference between the first set value is not less than the set maximum communication distance between vehicle terminals, and the first set value is an integer greater than 0;
[0101] If the parameter information can also be information including the quality information of the measured link signal, in this step 203, it can be determined whether the vehicle terminal is in the coverage area of ​​the first base station according to the quality information of the measured link signal. Marginal area
[0102] If the parameter information includes the measured quality information of the link signal and the information of the current geographic location information of the vehicle terminal, this step 203 can be based on the measured quality information of the link signal and the current geographic location information of the vehicle terminal. , Determine whether the vehicle terminal is in the edge area of ​​the coverage area of ​​the first base station;
[0103] Specifically, considering the breathing effect of the cell, the coverage of the first base station varies with the number of users in the cell, that is, the cell boundary itself is not strict, but the quality information of the measured link signal can be used In order to determine the coverage area of ​​the first base station, that is, the cell boundary, the coverage area of ​​the first base station can be determined first according to the quality information of the measured link signal, and then whether the vehicle terminal is determined according to the current geographic location information of the vehicle terminal Located at the edge of the coverage area of ​​the first base station. In other words, first determine the cell boundary of the cell where the vehicle terminal is located according to the measured link signal quality information, and then determine whether the vehicle terminal is at the cell edge of the cell where the vehicle terminal is located according to the current geographic location information of the vehicle terminal.
[0104] Use below image 3 Describe the edge area of ​​the coverage of the first base station; image 3 The distance between adjacent base stations is not less than the set maximum communication distance between vehicle terminals;
[0105] Assuming that eNB1 is the first base station, the coverage area of ​​the first base station is image 3 A great circle with a middle radius of R, and a circle whose center is the center of the coverage area of ​​the first base station and whose radius is smaller than the first set value is image 3 A small circle with a middle radius of r; the value of R-r is greater than or equal to the set maximum communication distance between vehicle terminals; the edge area of ​​the coverage area of ​​the first base station is the circle between the circle and the small circle.
[0106] Relative to the edge area of ​​the coverage area of ​​the first base station, the area within the small circle with a radius of r can be referred to as the central area of ​​the coverage area of ​​the first base station;
[0107] Step 204: The first base station determines the shared information cell of the vehicle terminal according to the set maximum communication distance between the vehicle terminals, and executes step 206;
[0108] Step 205: The first base station broadcasts the vehicle safety information in the coverage area of ​​the first base station;
[0109] Step 206: Broadcast the vehicle safety information to the vehicle terminals in the cell within the coverage area of ​​the first base station in the shared information cell, and carry the determined identity of the shared information cell in the vehicle safety information and send it to each of the shared information cells. The second base station to which the cell belongs, so that the second base station broadcasts the vehicle safety information.
[0110] In this step 206, the first base station can receive the vehicle safety information sent by a vehicle terminal in the edge area and forward it to the second base station through the X2 interface. It can also set a time window to set a certain period (for example, 10ms, the period (Need to be less than the interval for the vehicle to send information) The received vehicle safety information sent by the vehicle terminal in the edge area is packaged and forwarded to the home base station of the neighboring cell.
[0111] In the above step 204, the shared information area is only determined for the vehicle terminal in the edge area, and the shared information area is not determined for the vehicle terminal in the central area. This is because the distance from the vehicle terminal in the central area is set. The vehicle terminals with the largest communication distance between the terminals are all within the coverage of the first base station. Therefore, the first base station only needs to broadcast the vehicle safety information reported by the vehicle terminals in the central area under its own coverage to satisfy the vehicle network. There is no need to determine the vehicle terminal to share the information cell. For the vehicle terminal in the edge area, the vehicle terminal from the maximum communication distance between the vehicle terminals set by it is not completely within the coverage of the first base station. Therefore, it is necessary to determine the shared information cell to pass the vehicle safety information through the base station. The forwarding between the vehicle terminals realizes the information sharing of the vehicle terminal to the vehicle terminals in the shared information cell.
[0112] Application scenario 2: Dense urban areas where the distance between adjacent base stations is less than the set maximum communication distance between vehicle terminals, that is, the distance between the first base station and the adjacent base station is less than the set maximum communication distance between vehicle terminals;
[0113] At this time, the method of communication between vehicle terminals is as follows Figure 4 As shown, including the following steps:
[0114] Step 401: The first base station receives parameter information reported by the vehicle terminal, where the parameter information includes cell information to which it belongs;
[0115] Step 402: The first base station receives the vehicle safety information reported by the vehicle terminal;
[0116] The above step 401 and step 402 can be performed at the same time, or step 402 can be performed first, and then step 401, which is not limited here;
[0117] Step 403: The first base station determines that all areas are in cells within the maximum communication distance between the vehicle terminals set outside the boundary of the cell to which the vehicle terminal belongs;
[0118] Step 404: Determine the shared information cell of the vehicle terminal according to the determined cell;
[0119] In this step 404, on the basis of the determined cells, some cells from the determined cells may be selected as shared information cells according to the highway class and the current network resource load situation. For example, when the system load is too high, the vehicle density is too high, or the Internet of Vehicles resources are limited, selecting some cells can reduce the number of cells sharing vehicle information.
[0120] Step 405: Broadcast the vehicle safety information to the vehicle terminals in the cell in the coverage area of ​​the first base station in the shared information cell, and carry the determined identity of the shared information cell in the vehicle safety information and send it to each of the shared information cells. The second base station to which the cell belongs, so that the second base station broadcasts the vehicle safety information.
[0121] In this step 405, the first base station can receive the vehicle safety information sent by a vehicle terminal and forward it to the second base station through the X2 interface. It can also set a time window to set a certain period (such as 10ms, the period needs to be less than the vehicle terminal The interval for sending vehicle safety information) The received vehicle safety information sent by the vehicle terminal is packaged and forwarded to the home base station of the neighboring cell.
[0122] Pass below Figure 5 , Image 6 The above steps 403 and 404 will be described.
[0123] In specific implementation, the network side configures a cell list of neighboring base stations that need to exchange vehicle safety information for each cell in advance according to the station spacing planned by the network. For example, the distance between base stations is 300 meters, and the required communication distance is also 300 meters. Figure 5 In the figure shown, Cell1, Cell2, and Cell3 respectively plan the vehicle sharing information list, as shown in the following table (1). Then, after obtaining the identity of the cell to which the vehicle terminal belongs, use the cell list of neighboring base stations that have been configured to exchange vehicle safety information to obtain the identity of the shared information cell and the base station to which each cell in the shared information cell belongs.
[0124] Table 1)
[0125]
[0126]
[0127] The above-mentioned vehicle information sharing cell lists are all cell-level or vehicle-level, and there are differences in the lists of each cell or each vehicle, and there are no rules, which results in high network maintenance costs. In order to reduce the maintenance cost of the network, the shared cell information list can also be simplified to reduce the maintenance cost.
[0128] At this time, the network divides each cell and its nearest 6 neighboring cells, a total of 7 cells into a CSCArea (CarSafetyCommunicationArea, vehicle safety communication area), and each cell records its own CSCAreaID and the CSCArea All cell identities. E.g, Image 6 Cell1 and Cell2 belong to CSCArea1 and CSCArea2, respectively.
[0129] Here, the access network side records the specific CSCAreaID and cell ID that can be broadcast for each cell, which reduces the complexity of the vehicle information sharing cell list, reduces maintenance costs, and realizes the reduction of vehicle information uploading to the core network for broadcasting. Time delay, and avoid the burden of a large amount of data and signaling on the S1 interface.
[0130] Preferably, after determining the shared information cell of the vehicle terminal according to the set maximum communication distance between the vehicle terminals, the method further includes:
[0131] Determine the broadcast resource occupation information of the first base station;
[0132] The determined broadcast resource occupation information of the first base station is respectively sent to the second base station to which each cell in the shared information cell belongs, so that the second base station determines the vehicle safety information used for broadcast reception according to the broadcast resource occupation information Broadcast resources.
[0133] It should be noted that if the network side pre-allocates specific broadcast resources for each cell, there is no need for base stations to exchange broadcast resources used by each cell.
[0134] In addition, when allocating uplink time slot resources to the vehicle terminal, the first base station can determine whether the vehicle terminal is in the edge area of ​​the coverage area of ​​the first base station based on the current geographic location information reported by the vehicle terminal, and based on the obtained information of other cells The time-slot resource allocation information selects non-conflicting time-frequency resources for the vehicle terminal. For example, for a vehicle terminal located in the central area of ​​the first base station, that is, a vehicle terminal that is not located in the edge area, it can be allocated time in the central area of ​​the neighboring base station. The frequency resource can also be the time-frequency resource of the center area of ​​the neighboring base station that is farther away, that is, the time-frequency resource of the vehicle terminal that has no communication requirements is reused; for the vehicle terminal in the edge area of ​​the first base station, it can be allocated to the neighboring base station. The time slot resources used by the vehicle terminals in the edge area of ​​the base station are different time slot resources; or the vehicle terminals in different cells are allocated completely different time-frequency resources in a certain area.
[0135] Wherein, the above-mentioned time slot resource allocation information of other cells can be obtained in either or both of the following two ways:
[0136] The first method: sharing the time-frequency resource information that each cell has allocated for the vehicle terminal in the first base station;
[0137] The second way: the first base station and the neighboring base station use the X2 interface to exchange the time-frequency resource information that has been allocated for the vehicle terminal.
[0138] Figure 7 The second flowchart of a method for communication between vehicle terminals provided by an embodiment of the present invention includes:
[0139] Step 701: The second base station receives the vehicle safety information carrying the identity of the shared information cell from the first base station;
[0140] Step 702: Broadcast the vehicle safety information to the vehicle terminals in the cell in the coverage area of ​​the second base station in the shared information cell.
[0141] Preferably, before broadcasting the vehicle safety information to the vehicle terminal in the cell in the coverage area of ​​the second base station in the shared information cell, the method further includes:
[0142] Receiving broadcast resource occupation information sent by the first base station;
[0143] Determine, according to the broadcast resource occupancy information, broadcast resources used for the vehicle safety information received by broadcast;
[0144] The broadcasting the vehicle safety information to the vehicle terminal in the cell in the coverage area of ​​the first base station in the shared information cell includes:
[0145] Broadcast the vehicle safety information using the determined broadcast resource to the vehicle terminals in the cell in the coverage area of ​​the second base station in the shared cell information.
[0146] Preferably, when the distance between adjacent base stations is not less than the set maximum communication distance between the vehicle terminals, the vehicle safety information is broadcast to the vehicles in the cell in the area covered by the second base station in the shared information cell Terminal, including:
[0147] Broadcasting the vehicle safety information to the vehicle terminals in the cell in the coverage area of ​​the second base station and in the edge area of ​​the coverage area of ​​the second base station in the shared information cell;
[0148] Wherein, the edge area of ​​the coverage area of ​​the second base station is the area outside and within the coverage area with the center of the coverage area of ​​the second base station as the center, and the radius is less than the first set value. The difference between the first set value is not less than the set maximum communication distance between vehicle terminals, and the second set value is an integer greater than 0.
[0149] Here for the above scenario 1, after acquiring the broadcast resource information of the first base station, the second base station can select the same broadcast resource as the first base station to broadcast the vehicle safety information of the same vehicle terminal, so that the first base station and the second base station can The joint transmission of the edge area with overlapping coverage improves the receiving performance of the vehicle terminal in the edge area.
[0150] Based on the same inventive concept, the embodiments of the present invention also provide a first base station and a second base station. Since the principle of the problem solved by the first base station and the second base station is similar to the aforementioned method of communication between vehicle terminals, the first base station and the second base station The implementation of the first base station and the second base station can refer to the implementation of the foregoing method, and the repetition will not be repeated.
[0151] Such as Figure 8 As shown, a schematic structural diagram of a first base station provided by an embodiment of the present invention includes:
[0152] The receiving unit 81 is configured to receive vehicle safety information reported by the vehicle terminal;
[0153] The determining unit 82 is configured to determine the shared information cell of the vehicle terminal according to the set maximum communication distance between the vehicle terminals;
[0154] The sending unit 83 is configured to broadcast the vehicle safety information to the vehicle terminals in the cell within the coverage area of ​​the first base station in the shared information cell, and carry the identified shared information cell identity in the vehicle safety information to send to The second base station to which each cell in the shared information cell belongs, so that the second base station broadcasts the vehicle safety information.
[0155] Preferably, the receiving unit 81 is further configured to receive parameter information reported by the vehicle terminal. The parameter information includes the current geographic location information of the vehicle terminal, the cell information to which it belongs, and the quality information of the measured link signal. One or several types of information;
[0156] The determining unit 82 is specifically configured to determine the shared information cell of the vehicle terminal according to the set maximum communication distance between the vehicle terminals and the parameter information.
[0157] Preferably, the parameter information includes current geographic location information of the vehicle terminal and/or quality information of the measured link signal;
[0158] The determining unit 82 is specifically configured to, when the distance between the first base station and the neighboring base station is not less than the set maximum communication distance between the vehicle terminals, according to the current geographic location information of the vehicle terminal and/or the Determine whether the vehicle terminal is in the edge area of ​​the coverage area of ​​the first base station based on the quality information of the measured link signal; if the judgment result is that it is in the edge area of ​​the coverage area of ​​the first base station, then according to the set maximum communication distance between the vehicle terminals, Determine the shared information cell of the vehicle terminal; wherein the edge area of ​​the coverage area of ​​the first base station is located outside the circle with the center of the coverage area of ​​the first base station as the center and the radius less than the first set value and within the coverage area Area, the difference between the radius of the coverage area of ​​the first base station and the first set value is not less than the set maximum communication distance between vehicle terminals, and the first set value is an integer greater than 0.
[0159] Preferably, the parameter information includes cell information to which it belongs;
[0160] The determining unit 82 is specifically configured to determine that when the first base station and the neighboring base station are less than the set maximum communication distance between vehicle terminals, determine that the entire area is outside the boundary of the cell to which the vehicle terminal belongs. A cell within the communication distance; according to the determined cell, the shared information cell of the vehicle terminal is determined.
[0161] Preferably, the determining unit 82 is further configured to determine the broadcast resource occupation information of the first base station;
[0162] The sending unit 83 is further configured to send the determined broadcast resource occupation information of the first base station to the second base station to which each cell in the shared information cell belongs, so that the second base station determines according to the broadcast resource occupation information A broadcast resource used to broadcast received vehicle safety information.
[0163] Such as Picture 9 As shown, a schematic structural diagram of a second base station provided by an embodiment of the present invention includes:
[0164] The receiving unit 91 is configured to receive vehicle safety information carrying the identity of the shared information cell from the first base station;
[0165] The sending unit 92 is configured to broadcast the vehicle safety information to the vehicle terminals in the cell in the coverage area of ​​the second base station in the shared information cell.
[0166] Preferably, the receiving unit 91 is further configured to receive broadcast resource occupation information sent by the first base station;
[0167] The second base station further includes:
[0168] The determining unit 93 is configured to determine, according to the broadcast resource occupancy information, the broadcast resource used for the broadcast received vehicle safety information;
[0169] The sending unit 92 is specifically configured to broadcast the vehicle safety information using the determined broadcast resource to the vehicle terminal in the cell in the coverage area of ​​the second base station in the shared cell information.
[0170] Preferably, the sending unit 92 is specifically configured to broadcast the vehicle safety information to the second cell in the shared information cell when the distance between adjacent base stations is not less than the set maximum communication distance between vehicle terminals. A vehicle terminal in a cell within the coverage area of ​​the base station and in the edge area of ​​the coverage area of ​​the second base station;
[0171] Wherein, the edge area of ​​the coverage area of ​​the second base station is the area outside and within the coverage area with the center of the coverage area of ​​the second base station as the center, and the radius is less than the first set value. The difference between the first set value is not less than the set maximum communication distance between vehicle terminals, and the second set value is an integer greater than 0.
[0172] Such as Picture 10 As shown, another schematic structural diagram of a first base station provided by an embodiment of the present invention includes:
[0173] The processor 1000 is configured to read the program in the memory 1020 and execute the following process: receive the vehicle safety information reported by the vehicle terminal through the transceiver 1010; determine the shared information of the vehicle terminal according to the set maximum communication distance between the vehicle terminals Cell; broadcast the vehicle safety information through the transceiver 1010 to the vehicle terminals in the cell in the coverage area of ​​the first base station in the shared information cell, and carry the identity of the determined shared information cell in the vehicle safety information through the transceiver 1010 is respectively sent to the second base station to which each cell in the shared information cell belongs, so that the second base station broadcasts the vehicle safety information.
[0174] The transceiver 1010 is used to receive and send data under the control of the processor 1000.
[0175] Preferably, the processor 1000 is also used to read the program in the memory 1020, and execute the following process: receive the parameter information reported by the vehicle terminal through the transceiver 1010, and the parameter information includes the current geographic location information of the vehicle terminal and the ownership One or more of the three types of cell information and measured link signal quality information; determine the shared information cell of the vehicle terminal according to the set maximum communication distance between the vehicle terminals and the parameter information.
[0176] Preferably, the parameter information includes current geographic location information of the vehicle terminal and/or quality information of the measured link signal;
[0177] The processor 1000 is specifically configured to read the program in the memory 1020 and execute the following process: when the distance between the first base station and the neighboring base station is not less than the set maximum communication distance between the vehicle terminals, according to the vehicle terminal To determine whether the vehicle terminal is in the edge area of ​​the coverage area of ​​the first base station; if the result of the determination is that it is in the edge area of ​​the coverage area of ​​the first base station, then according to The maximum communication distance between the vehicle terminals is set to determine the shared information cell of the vehicle terminal; wherein the edge area of ​​the coverage area of ​​the first base station is centered on the center of the coverage area of ​​the first base station, and the radius is smaller than the first set value In the area outside the circle of, and within the coverage area, the difference between the radius of the coverage area of ​​the first base station and the first set value is not less than the set maximum communication distance between vehicle terminals, and the first set value is greater than An integer of 0.
[0178] Preferably, the parameter information includes cell information to which it belongs;
[0179] The processor 1000 is specifically configured to read the program in the memory 1020 and execute the following process: when the first base station and the neighboring base station are less than the set maximum communication distance between the vehicle terminals, determine that all areas belong to the vehicle terminal A cell within the maximum communication distance between the vehicle terminals set outside the cell boundary; and the shared information cell of the vehicle terminal is determined according to the determined cell.
[0180] Preferably, the processor 1000 is further configured to read the program in the memory 1020 and execute the following process: after determining the shared information cell of the vehicle terminal according to the set maximum communication distance between the vehicle terminals, determining the first base station Broadcast resource occupation information; the determined broadcast resource occupation information of the first base station is sent to the second base station to which each cell in the shared information cell belongs through the transceiver 1010, so that the second base station determines according to the broadcast resource occupation information A broadcast resource used to broadcast received vehicle safety information.
[0181] Among them, in Picture 10 In this case, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1000 and various circuits of the memory represented by the memory 1020 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface provides the interface. The transceiver 1010 may be a plurality of elements, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on a transmission medium. The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1000 when performing operations.
[0182] Such as Picture 11 As shown, another schematic structural diagram of a second base station provided by an embodiment of the present invention includes:
[0183] The processor 1100 is configured to read the program in the memory 1120, and execute the following process: receive the vehicle safety information carrying the identity of the shared information cell from the first base station through the transceiver 1110; pass the vehicle safety information through the transceiver 1110 Broadcast to the vehicle terminals in the cell in the coverage area of ​​the second base station in the shared information cell.
[0184] The transceiver 1110 is configured to receive and send data under the control of the processor 1100.
[0185] Preferably, the processor 1100 is further configured to read a program in the memory 1120, and execute the following process: receive the broadcast resource occupation information sent by the first base station through the transceiver 1110; and determine the broadcast resource occupation information according to the broadcast resource occupation information. The received broadcast resource of the vehicle safety information; the broadcast resource determined by the vehicle safety information is broadcast to the vehicle terminals in the cell in the coverage area of ​​the second base station in the shared cell information through the transceiver 1110.
[0186] Preferably, the processor 1100 is also used to read the program in the memory 1120, and when the distance between adjacent base stations is not less than the set maximum communication distance between the vehicle terminals, the vehicle safety information is transmitted through the transceiver 1110 is broadcast to the vehicle terminals in the cell in the coverage area of ​​the second base station and in the edge area of ​​the coverage area of ​​the second base station in the shared information cell;
[0187] Wherein, the edge area of ​​the coverage area of ​​the second base station is the area outside and within the coverage area with the center of the coverage area of ​​the second base station as the center, and the radius is less than the first set value. The difference between the first set value is not less than the set maximum communication distance between vehicle terminals, and the second set value is an integer greater than 0.
[0188] Through the description of the above implementation manners, those skilled in the art can clearly understand that the embodiments of the present invention can be implemented by hardware, or can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solutions of the embodiments of the present invention can be embodied in the form of a software product, and the software product can be stored in a non-volatile storage medium (which can be a CD-ROM, U disk, mobile hard disk, etc.), A number of instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in each embodiment of the present invention.
[0189] Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of preferred embodiments, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present invention.
[0190] Those skilled in the art can understand that the modules in the terminal in the embodiment may be distributed in the terminal of the embodiment according to the description of the embodiment, or may be changed to be located in one or more terminals different from this embodiment. The modules of the above-mentioned embodiments can be combined into one module, or further divided into multiple sub-modules.
[0191] The sequence numbers of the foregoing embodiments of the present invention are only for description, and do not represent the superiority of the embodiments.
[0192] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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