WO2018000263A1 - 通信方法、转发设备和终端设备 - Google Patents

通信方法、转发设备和终端设备 Download PDF

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Publication number
WO2018000263A1
WO2018000263A1 PCT/CN2016/087746 CN2016087746W WO2018000263A1 WO 2018000263 A1 WO2018000263 A1 WO 2018000263A1 CN 2016087746 W CN2016087746 W CN 2016087746W WO 2018000263 A1 WO2018000263 A1 WO 2018000263A1
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WO
WIPO (PCT)
Prior art keywords
information
terminal device
information packet
time
packet
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Application number
PCT/CN2016/087746
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English (en)
French (fr)
Inventor
唐海
胡鑫
王强
韦伟
杨丽娜
Original Assignee
广东欧珀移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to EP16906664.4A priority Critical patent/EP3429272B1/en
Priority to PCT/CN2016/087746 priority patent/WO2018000263A1/zh
Priority to US16/096,819 priority patent/US20190141602A1/en
Priority to CN201680084149.XA priority patent/CN109076429B/zh
Priority to TW106119695A priority patent/TW201801503A/zh
Publication of WO2018000263A1 publication Critical patent/WO2018000263A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/20Communication route or path selection, e.g. power-based or shortest path routing based on geographic position or location
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/12Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/18Self-organising networks, e.g. ad-hoc networks or sensor networks

Definitions

  • the present invention relates to the field of communications, and more particularly to a communication method, a forwarding device, and a terminal device.
  • VANET Vehicular Ad-hoc network
  • ITS Intelligent Transportation System
  • RSUs roadside units
  • the real-time and reliable security information and the multimedia service information are exchanged with each other to realize an effective and reliable interaction process between the safe driving and the vehicles.
  • the vehicles in the vehicle-mounted self-organizing network can have rich external auxiliary information, which can not only obtain its own location information, but also obtain geographic information of the region, such as Intersection distribution, road direction, regional map, etc.
  • GPS Global Positioning System
  • the vehicle self-organizing network is a specific application of the traditional mobile ad-hoc network (MANET) on the road. It has various characteristics of the mobile ad hoc network, such as autonomous, no fixed structure, multi-hop routing, network. Features such as dynamic changes in topology.
  • the vehicle-mounted self-organizing network plays an important role in safe driving and driving comfort. Its applications can be mainly divided into two categories: one mainly solves the driving safety problem, and the corresponding sent message is high priority; the other type It mainly provides users with value-added services, such as functions such as multimedia entertainment for passengers in the car, and the corresponding messages sent are of low priority.
  • the vehicular self-organizing network usually adopts the wireless communication standard IEEE 802.11p, which is a communication standard adopted by Dedicated Short Range Communications (DSRC), and its communication coverage is small, so the vehicle will inevitably appear frequently in a high-speed mobile environment.
  • IEEE 802.11p is a communication standard adopted by Dedicated Short Range Communications (DSRC)
  • DSRC Dedicated Short Range Communications
  • the switching process When the distance between the transceiver vehicles exceeds a certain range, the transmission power must be increased to ensure the business continuity of the vehicle communication. When the vehicle distance continues to increase, simply increasing the transmission power still cannot solve the problem. Jump relay forwarding information becomes a must.
  • a dynamic routing scheme for a multi-hop relay node (that is, how to select a suitable relay node to forward data and determine a suitable topology connection path) is mainly divided into a centralized road.
  • a selection scheme and a distributed routing scheme wherein centralized routing belongs to a strategy of a dynamic routing algorithm, that is, the base station is responsible for collecting and calculating information in the entire network system, and planning and implementing the optimal path, and the base station periodically
  • the implementation scheme is sent to each node in the network.
  • the base station needs to spend a lot of resources to update the routing table.
  • the centralized selection scheme will cause an unloading load on the base station.
  • each node exchanges cost and routing information with neighboring nodes on an interactive basis until the optimal topology connection path is obtained. It is obvious that the interactive broadcast process between relay nodes causes a large number of invalidations. Broadcasting results in a large signaling overhead, and the entire interactive process has low convergence and consumes a large delay.
  • the embodiment of the invention provides a communication method, a forwarding device and a terminal device, which can reduce signaling overhead and improve communication efficiency.
  • a communication method comprising:
  • the first forwarding device receives the first information packet, where the first information packet includes data and/or signaling sent by the first terminal device to the second terminal device;
  • the first forwarding device forwards the first information packet according to a predetermined area, where the predetermined area is an area that is set with a predetermined value centered on the first forwarding device.
  • the information packet is forwarded according to the predetermined area, and the signaling overhead can be reduced, thereby improving communication efficiency.
  • the first information packet further includes location information of the second terminal device
  • the first forwarding device forwards the first information packet according to the predetermined area and the location information of the second terminal device.
  • the first forwarding device forwards the first information packet according to the predetermined area and the location information of the second terminal device, including:
  • the first forwarding device sends the first information packet to the second forwarding device at the edge of the predetermined area, where the second forwarding device is located in the proximity of the first forwarding device One side of the second terminal device.
  • the method further includes:
  • the first forwarding device acquires routing information in the predetermined area
  • the first forwarding device sends the first information packet to the second forwarding device at the edge of the predetermined area, including:
  • the first forwarding device sends the first information packet to the second forwarding device according to the routing information in the predetermined area.
  • the first forwarding device forwards the first information packet according to the predetermined area and the location information of the second terminal device, including:
  • the first forwarding device sends the first information packet to the second terminal device.
  • the method further includes:
  • the first forwarding device When receiving the first information packet, the first forwarding device writes time information of the first information packet to the first information packet.
  • the first information packet further includes an information level
  • the method further includes:
  • the first forwarding device determines, according to the information level, that the information level of the first information packet is a normal level.
  • the predetermined value includes a predetermined distance or a predetermined number of hops.
  • the location information of the second terminal device includes location information of the second terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or T 0 Direction information of time, where T 0 represents a specific time before the first terminal device transmits the first information packet, and ⁇ T represents a change of time.
  • the first information packet further includes at least one of identification information of the first terminal device, identification information of the second terminal device, and location information of the first terminal device.
  • a communication method including:
  • the first terminal device acquires location information of the second terminal device, where the second terminal device is a target terminal device of the first terminal device;
  • the first terminal device determines, according to the location information of the second terminal device, at least one forwarding device, where the forwarding device is a forwarding device that the first terminal device can access;
  • the first terminal device sends a first information packet to the forwarding device, where the first information packet includes data and/or signaling sent by the first terminal device to the second terminal device.
  • the information packet is directionally transmitted according to the location information, and the communication efficiency can be improved.
  • the first information packet further includes location information of the second terminal device.
  • the first information packet further includes time information that the first terminal device sends the first information packet.
  • the method before the first terminal device acquires the location information of the second terminal device, the method further includes:
  • the first terminal device determines that the information level of the first information packet is a normal level
  • the first information packet also includes the information level.
  • the first information packet further includes at least one of identification information of the first terminal device, identification information of the second terminal device, and location information of the first terminal device.
  • the location information of the first terminal device includes location information of the first terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or T 0
  • the location information of the second terminal device includes location information of the second terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or direction of time T 0 Information, where T 0 represents a specific time before the first terminal device transmits the first information packet, and ⁇ T represents a change in time.
  • the method further includes:
  • the first terminal device acquires location information of the first terminal device at time T 0 according to the positioning module of the first terminal device, and/or determines location information of the first terminal device at time T 0 + ⁇ T; or
  • the first terminal device acquires location information of the first terminal device at time T 0 according to the positioning module of the first terminal device, and/or determines direction information of the first terminal at time T 0 ;
  • the acquiring, by the first terminal device, location information of the second terminal device includes: receiving, by the first terminal device, location information of the second terminal device that is sent by the base station.
  • the method further includes:
  • the first terminal device sends location information and/or T 0 direction information of the first terminal device at time T 0 to the base station.
  • a communication method including:
  • the second terminal device Determining, by the second terminal device, the first reverse path according to the received first information packet, where the first reverse path is a reverse path of the at least one sending path of the first information packet;
  • the second terminal device sends a second information packet according to the first reverse path, where the second information packet includes data and/or signaling sent by the second terminal device to the first terminal device.
  • the reverse path is determined from the transmission path of the first information packet, and a suitable reverse path can be obtained, thereby improving communication efficiency.
  • the first information packet further includes time information, where the time information includes time information that the first terminal device sends the first information packet, and/or each forwarding device that forwards the first information packet Receiving time information of the first information packet;
  • Determining, by the second terminal device, the first reverse path according to the received first information packet including:
  • the second terminal device determines the first reverse path according to the time information.
  • the first reverse path is a reverse path of a transmission path of the first packet with a minimum delay.
  • a communication method including:
  • the lifetime is greater than zero, the lifetime is reduced by a fixed value, and the third packet is broadcast.
  • the communication method of the embodiment of the present invention can avoid broadcast storm and information redundancy.
  • the third information packet further includes an information level
  • the method also includes:
  • the third information packet is determined to include high priority information based on the information level.
  • the high priority information is secure traffic information.
  • a communication method including:
  • the communication device for receiving the third information packet in the life cycle reduces the lifetime to a fixed value when the lifetime is greater than zero, and broadcasts the third packet.
  • the communication method of the embodiment of the present invention can avoid broadcast storm and information redundancy.
  • the method before the generating the third information packet, the method further includes:
  • the third information packet further includes an information level indicating that the third information packet includes the high priority information.
  • the high priority information is secure traffic information.
  • a forwarding device comprising means for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a terminal device comprising means for performing the method of any of the second aspect or any of the possible implementations of the second aspect.
  • a terminal device comprising means for performing the method of any of the third or third aspects of the possible implementation.
  • a communication device comprising means for performing the method of any of the possible implementations of the fourth aspect or the fourth aspect.
  • a communication device comprising means for performing the method of any of the fifth or fifth aspects of the possible implementation.
  • a forwarding device in an eleventh aspect, includes a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
  • a terminal device includes a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.
  • a terminal device in a thirteenth aspect, includes a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the third aspect or the third aspect.
  • a communication device in a fourteenth aspect, includes a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • Memory for storing instructions
  • processor For executing the instruction, the communication interface is used to communicate with other network elements under the control of the processor.
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the fourth aspect or the fourth aspect.
  • a communication device in a fifteenth aspect, includes a processor, a memory, and a communication interface.
  • the processor is coupled to the memory and communication interface.
  • the memory is for storing instructions for the processor to execute, and the communication interface is for communicating with other network elements under the control of the processor.
  • the processor executes the instructions stored by the memory, the execution causes the processor to perform the method of any of the possible implementations of the fifth or fifth aspect.
  • a sixteenth aspect a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • a seventeenth aspect a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of any of the second aspect or the second aspect of the second aspect.
  • a computer readable medium for storing a computer program comprising instructions for performing the method of any of the third aspect or any of the possible implementations of the third aspect.
  • a nineteenth aspect a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of any of the fourth or fourth aspect of the fourth aspect.
  • a computer readable medium for storing a computer program comprising instructions for performing the method of any of the fifth or fifth aspects of the possible implementation.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.
  • FIG. 2 is a schematic flow chart of a communication method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a communication method according to another embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a communication method according to still another embodiment of the present invention.
  • 5a and 5b are schematic diagrams of messages in an embodiment of the present invention.
  • Figure 6 is a schematic diagram of a packet in an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a communication method according to still another embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a communication method according to still another embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of a communication method according to still another embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of a forwarding device according to an embodiment of the present invention.
  • FIG. 11 is a schematic block diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 12 is a schematic block diagram of a terminal device according to another embodiment of the present invention.
  • Figure 13 is a schematic block diagram of a communication device in accordance with one embodiment of the present invention.
  • Figure 14 is a schematic block diagram of a communication device in accordance with another embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a communication device according to still another embodiment of the present invention.
  • the terminal device in the embodiment of the present invention may also refer to a vehicle, a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, Terminal, wireless communication device, user agent or user device.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, or a Personal Digital Assistant ("PDA").
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • a handheld device having a wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN network.
  • the forwarding device in the embodiment of the present invention is a network device that forwards the information packet of the terminal device.
  • the forwarding device can be an RSU or a wireless router or the like.
  • the base station in the embodiment of the present invention is a network device in a communication system, and may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or a base station (NodeB, NB) in WCDMA, or may be in LTE.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • the evolved base station (Evolutional Node B, ENB or e-NodeB) is not limited in the present invention.
  • the communication device in the embodiment of the present invention may be any one of the foregoing devices, that is, a terminal device, a forwarding device, or a base station.
  • FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present invention.
  • the scenario includes a base station 101; a plurality of forwarding devices, such as forwarding devices 111-117; and a plurality of terminal devices, such as terminal devices 121 and terminal devices 122.
  • the terminal device 121 is intended to communicate with the terminal device 122.
  • the scenario in Figure 1 can be a traffic scenario, in which case the terminal device can be a vehicle and the forwarding device can be an RSU.
  • FIG. 2 shows a schematic flow diagram of a communication method 200 in accordance with an embodiment of the present invention.
  • the method 200 is performed by a forwarding device (denoted as a first forwarding device), such as the forwarding device of FIG.
  • a forwarding device denoted as a first forwarding device
  • the method 200 includes:
  • the first forwarding device receives a first information packet, where the first information packet includes data and/or signaling sent by the first terminal device to the second terminal device.
  • the first forwarding device forwards the first information packet according to the predetermined area, where the predetermined area is an area that is set by a predetermined value centering on the first forwarding device.
  • the first terminal device represents a source node of the first information packet
  • the second terminal device represents a target node of the first information packet
  • the first forwarding device represents any forwarding in the forwarding process of the first information packet. device.
  • the first forwarding device forwards the first information packet according to a predetermined area, where the predetermined area is an area set by a predetermined value centering on the first forwarding device. That is to say, the first forwarding device does not need to consider the entire network, and only needs to consider the predetermined area, that is, the first forwarding device only needs to obtain the information of the predetermined area, so that the information can be reduced relative to the solution for acquiring the entire network information.
  • the overhead is increased, thereby improving communication efficiency.
  • the communication method of the embodiment of the present invention can reduce the signaling overhead by forwarding the information packet according to the predetermined area, thereby improving communication efficiency.
  • the information packet carries data and/or signaling transmitted between the communication devices, and the “information packet” may also be expressed as “message”, “message”, “data packet”, etc. The specific expression is not limited by the present invention.
  • the predetermined area is an area centered on the forwarding device and set by a predetermined value.
  • the predetermined area may also be referred to as a virtual area, and the description of the predetermined area is not limited in the embodiment of the present invention.
  • Each forwarding device has a virtual area centered on itself and set by a predetermined value.
  • the predetermined value may be a predetermined distance or a predetermined number of hops.
  • the predetermined value can be an N hop, where N is a positive integer.
  • the predetermined area of the forwarding device 115 may be an area with the forwarding device 115 as the center node and the hop number 1 as the radius.
  • the predetermined areas corresponding to different forwarding devices may overlap, that is, a certain forwarding device may belong to multiple predetermined areas at the same time.
  • a node with a hop count of N from the center node may be referred to as a side edge node, and a node hopped from the center node N-1 to 0 is defined as an intra-area node, as shown in FIG. 3, due to the hop count
  • the N value is 1, so the forwarding devices 111, 112, and 116 in the predetermined area of the forwarding device 115 are the side nodes, and the forwarding device 115 is the regional node.
  • the central node periodically exchanges with other nodes and updates network topology connection information in the current predetermined area, thereby acquiring routing information in the predetermined area. That is to say, the central node can obtain routing information from the local node to all the remaining nodes in the predetermined area, that is, can obtain routing information of all remaining nodes in the arriving area.
  • the forwarding device forwards the information packet according to the predetermined area, that is, forwards the information packet in the predetermined area.
  • the first information packet further includes location information of the second terminal device
  • the first forwarding device forwards the first information packet according to the predetermined area and the location information of the second terminal device.
  • the first forwarding device may further obtain location information of the second terminal device by using other manners.
  • including the location information of the second terminal device in the first information packet is only a preferred implementation manner.
  • the invention is not limited.
  • the first forwarding device forwards the first information packet according to the predetermined area and the location information of the second terminal device, including:
  • the first forwarding device sends the first information packet to the second forwarding device at the edge of the predetermined area, where the second forwarding device is located in the proximity of the first forwarding device One side of the second terminal device.
  • the first forwarding device determines, according to the predetermined area and the location information of the second terminal device, whether the second terminal device is in the predetermined area, and if the second terminal device is not in the predetermined area, the first The forwarding device sends the first information packet to the second forwarding device at the edge of the predetermined area.
  • the second forwarding device is located at a side of the first forwarding device that is adjacent to the second terminal device. That is, the first forwarding device sends the first information packet to the edge node in the direction from the first terminal device to the second terminal device.
  • the manner in which the first forwarding device sends the first information packet to the second forwarding device may be direct transmission or indirect transmission.
  • the first forwarding device may send the first information packet to the second forwarding indirectly through another forwarding device. device.
  • the forwarding device 115 determines that the terminal device 122 is not in the predetermined area of the forwarding device 115, and thus the packet is along the terminal device 121.
  • the transmission to the terminal device 122 can be sent to the forwarding device 111 or the forwarding device 112.
  • the first forwarding device may first obtain routing information in the predetermined area, and send the first information packet to the second forwarding device according to the routing information in the predetermined area.
  • the first forwarding device can periodically exchange with other forwarding devices in the predetermined area and update network topology connection information in the current predetermined area, thereby acquiring routing information in the predetermined area.
  • the first forwarding device forwards the first information packet according to the predetermined area and the location information of the second terminal device, including:
  • the first forwarding device sends the first information packet to the second terminal device.
  • the first forwarding device determines, according to the predetermined area and the location information of the second terminal device, whether the second terminal device is in the predetermined area, and if the second terminal device is in the predetermined area, the first The forwarding device sends the first information packet to the second terminal device.
  • the The first forwarding device may send the first information packet to the second terminal device through the directional antenna.
  • the manner in which the first forwarding device sends the first information packet to the second terminal device may be direct transmission or indirect transmission.
  • the first forwarding device may send the first information packet to the second terminal indirectly through another forwarding device. device.
  • the forwarding device 113 determines that the terminal device 122 is within the predetermined area of the forwarding device 113, and therefore directly transmits the information packet to the terminal.
  • Device 122 when the terminal device 121 sends a packet to the terminal device 122, the forwarding device 113 determines that the terminal device 122 is within the predetermined area of the forwarding device 113, and therefore directly transmits the information packet to the terminal. Device 122.
  • the method may further include:
  • the first forwarding device When receiving the first information packet, the first forwarding device writes time information of the first information packet to the first information packet.
  • the first terminal device can write the sending moment to the information packet when the information packet is sent, and each forwarding device writes the receiving moment of the information packet into the information packet, so that the delay of the link can be determined through these moments.
  • the forwarding device can also write the forwarding hop count into the information packet.
  • the first information packet may further include an information level.
  • the information level indicates that the information level of the first information packet is a normal level.
  • the information level can be written by the first forwarding device into the first information packet.
  • the first forwarding device determines, according to the information level, that the information level of the first information packet is a normal level.
  • the first information packet may further include at least one of identifier information of the first terminal device, identifier information of the second terminal device, and location information of the first terminal device.
  • the first information packet may also include other fields, which are not limited by the present invention.
  • the location information of the first terminal device includes location information of the first terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and Or direction information at time T 0
  • the location information of the second terminal device includes location information of the second terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or T Direction information at time 0 , where T 0 represents a specific time before the first terminal device transmits the first packet, and ⁇ T represents a change in time.
  • each terminal device can obtain its own position information at the current time T 0 according to its own positioning module, for example, the GPS module, for example, latitude and longitude coordinate information, and determine direction information at time T 0 according to its own motion detection module. Determine its own speed, acceleration and other information to predict its position information at T 0 + ⁇ T.
  • Each terminal device may transmit the location information of the terminal apparatus to the base station, e.g., position information of the own position and time information T 0 / T 0 + ⁇ T or time, or the time T 0 and / or direction information is notified to The base station, in this way, the transmitting terminal device of the information packet can acquire the location information of the receiving terminal device of the information packet to the base station.
  • the communication method of the embodiment of the present invention is described above from the forwarding device side, and the communication method of the embodiment of the present invention is described below from the terminal device side.
  • FIG. 4 shows a schematic flow diagram of a communication method 400 in accordance with an embodiment of the present invention.
  • the method 400 is performed by a source node (denoted as a first terminal device) of a packet, such as terminal device 121 in FIG.
  • the method 400 includes:
  • the first terminal device acquires location information of the second terminal device, where the second terminal device is a target terminal device of the first terminal device;
  • the first terminal device determines, according to the location information of the second terminal device, at least one forwarding device, where the forwarding device is a forwarding device that the first terminal device can access;
  • the first terminal device sends a first information packet to the forwarding device, where the first information packet includes data and/or signaling sent by the first terminal device to the second terminal device.
  • the location information of the second terminal device selects a forwarding device that the first terminal device can access, for example, selecting to be located at the first terminal.
  • the forwarding device of the device that is close to the side of the second terminal device sends the first information packet to the forwarding device, and then the forwarding device continues to forward the first information packet. That is to say, the first terminal device performs directional transmission of the information packet according to the location information, thereby improving communication efficiency.
  • the first information packet may further include location information of the second terminal device.
  • the location information of the second terminal device can be used for directed forwarding of subsequent forwarding devices.
  • the location information of the first terminal device includes location information of the first terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or direction information at time T 0
  • the location information of the second terminal device includes location information of the second terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or direction information at time T 0 , where T 0 indicates a specific time before the first terminal device transmits the first packet, and ⁇ T indicates a change in time.
  • the first terminal device acquires location information of the first terminal device at time T 0 according to the positioning module of the first terminal device, and/or determines a location of the first terminal device at time T 0 + ⁇ T Information; or
  • the first terminal device acquires location information of the first terminal device at time T 0 according to the positioning module of the first terminal device, and/or determines direction information of the first terminal at time T 0 ;
  • the first terminal device receives location information of the second terminal device sent by the base station.
  • the method further includes:
  • the first terminal device sends location information and/or direction information of the first terminal device at time T 0 to the base station.
  • each terminal device may obtain its own position information at the current time T 0 according to its own positioning module, for example, the GPS module, for example, latitude and longitude coordinate information, and determine direction information at time T 0 according to its own motion detection module. Determine its own speed, acceleration and other information to predict its position information at T 0 + ⁇ T.
  • Each terminal device may transmit the location information of the terminal apparatus to the base station, e.g., position information of the own position and time information T 0 / T 0 + ⁇ T or time, or the time T 0 and / or direction information is notified to The base station, in this way, the transmitting terminal device of the information packet can acquire the location information of the receiving terminal device of the information packet to the base station.
  • the first terminal device may obtain location information of the first terminal device at time T 0 according to the positioning module of the first terminal device, and determine direction information at time T 0 , according to the first
  • the motion detection module of the terminal device determines location information of the first terminal device at time T 0 + ⁇ T.
  • the first terminal device requests location information of the second terminal device from the base station.
  • the first terminal device can request a message to the base station as shown in Figure 5a.
  • the location information of the second terminal device reported by the second terminal device for example, the location information of the second terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or Direction information is sent to the first terminal device.
  • the message that the terminal device reports the location information to the base station and the message that the base station sends the location information to the terminal device may adopt a message as shown in FIG. 5b.
  • the first terminal device may be configured according to location information of the first terminal device and location information of the second terminal device.
  • Determine the next hop routing device preferably, the determined next hop routing device is located at a side of the first terminal device that is close to the second terminal device.
  • the terminal device may be equipped with an electronic map, and the terminal device determines a plurality of multi-hop forwarding paths that may exist between the transmitting and receiving ends according to the location information of the transmitting and receiving ends through the electronic map, thereby determining a possible next hop. If the distance between the transmitting and receiving ends is L and the distribution density of the forwarding device is ⁇ , there are ⁇ L 2 /2 forwarding devices in the square with the straight line distance between the transmitting and receiving ends as the diagonal line, and the selected ⁇ L can be preset. 2 /2 forwarding paths are used as candidates, where ⁇ is the pre-selected path percentage.
  • the terminal device 121 when the terminal device 121 sends a packet to the terminal device 122, the terminal device 121 can select the forwarding device 116 or the forwarding device 115 as the next hop according to the location of the terminal device 121 and the terminal device 122.
  • the first information packet may further include time information, such as a time, that the first terminal device sends the first information packet. This time information can be used to determine the delay of the link.
  • the first information packet may further include an information level, where the information level indicates that the information level of the first information packet is a normal level.
  • the method further includes:
  • the first terminal device determines that the information level of the first information packet is a normal level.
  • the first information packet further includes at least one of identifier information of the first terminal device, identifier information of the second terminal device, and location information of the first terminal device.
  • the first packet may adopt a format as shown in FIG. 6. It should be understood that FIG. 6 is only an example. In practical applications, the first information packet may adopt more or less fields than those shown in FIG. 6.
  • the forwarding device may forward the first information packet according to the forwarding device side method described in the foregoing embodiment of the present invention, so that the first information packet is finally Send to the second terminal device.
  • the terminal device 121 when the terminal device 121 sends a packet to the terminal device 122, the terminal device 121 can select the forwarding device 116 as the next hop according to the location of the terminal device 121 and the terminal device 122, and send the packet to the forwarding device 116. ;
  • the forwarding device 116 determines that the terminal device 122 is not in the predetermined area of the forwarding device 116, and therefore sends the information packet in the direction of the terminal device 121 to the terminal device 122, that is, can be sent to the forwarding device 115;
  • the forwarding device 115 determines that the terminal device 122 is not in the predetermined area of the forwarding device 115, and therefore sends the information packet in the direction of the terminal device 121 to the terminal device 122, that is, may be sent to the forwarding device 112;
  • the forwarding device 112 determines that the terminal device 122 is not within a predetermined area of the forwarding device 112, thus Sending the information packet in the direction of the terminal device 121 to the terminal device 122, that is, it can be sent to the forwarding device 117;
  • the forwarding device 117 determines that the terminal device 122 is not in the predetermined area of the forwarding device 117, and therefore sends the information packet in the direction of the terminal device 121 to the terminal device 122, that is, can be sent to the forwarding device 114;
  • the forwarding device 114 determines that the terminal device 122 is not in the predetermined area of the forwarding device 114, and therefore sends the information packet in the direction of the terminal device 121 to the terminal device 122, that is, can be sent to the forwarding device 113;
  • the forwarding device 113 determines that the terminal device 122 is within the predetermined area of the forwarding device 113, and thus transmits the information packet directly to the terminal device 122.
  • FIG. 7 shows a schematic flow diagram of a communication method 700 in accordance with an embodiment of the present invention.
  • the method 700 is performed by a target node (denoted as a second terminal device) of a packet, such as the terminal device 122 of FIG.
  • the method 700 includes:
  • the second terminal device receives the first information packet, where the first information packet includes data and/or signaling sent by the first terminal device to the second terminal device.
  • the second terminal device determines, according to the received first information packet, a first reverse path, where the first reverse path is a reverse path of at least one sending path of the first information packet;
  • the second terminal device sends a second information packet according to the first reverse path, where the second information packet includes data and/or signaling sent by the second terminal device to the first terminal device.
  • the second terminal device when receiving the first information packet of the first terminal device, determines a reverse path from the sending path of the first information packet according to the received first information packet, so that Get the appropriate reverse path to improve communication efficiency.
  • the first information packet further includes time information, where the time information includes time information that the first terminal device sends the first information packet, and/or each forwarding device that forwards the first information packet receives the first information packet.
  • Time information of a packet includes time information that the first terminal device sends the first information packet, and/or each forwarding device that forwards the first information packet receives the first information packet.
  • Determining, by the second terminal device, the first reverse path according to the received first information packet including:
  • the second terminal device determines the first reverse path according to the time information.
  • the first reverse path is a reverse path of a sending path of the first packet with a minimum delay.
  • the second terminal device may select a reverse path of the transmission path of the first information packet with the smallest delay, and send the second information packet to the first terminal device in reverse.
  • the format of the second information packet may be similar to the first information packet.
  • the base station may periodically allocate a delay threshold and a rate threshold of each link to the nodes in the coverage range, and the threshold may be used to determine whether the current node needs to continue to forward the information packet. .
  • the base station may set an appropriate predetermined value according to the current terminal device density and the forwarding device density, so as to ensure that the delay communication is as small as possible under the premise of a certain communication rate, and at the same time No resources are wasted because the routing information in the predetermined area is too large.
  • FIG. 8 shows a schematic flow diagram of a communication method 800 in accordance with an embodiment of the present invention.
  • the method 800 can be performed by a head node, such as the first terminal device of FIG. As shown in FIG. 8, the method 800 includes:
  • the third information packet is broadcasted, and the communication device that receives the third information packet in the life cycle reduces the lifetime to a fixed value when the lifetime is greater than zero, and broadcasts the third information packet.
  • the life cycle is set in the information packet, and each subsequent forwarding, the life cycle is reduced by a fixed value.
  • the fixed value may be 1, and the forwarding is stopped when the life cycle is zero, so that the broadcast storm can be avoided. And information redundancy.
  • the method before generating the third information packet, the method further includes:
  • the third information packet further includes an information level indicating that the third information packet includes the high priority information.
  • the high priority information is safety road condition information.
  • the surrounding vehicles should avoid the congested road section as soon as possible, send the life cycle of the vehicle preset safety road condition information, and broadcast the information to the surrounding radius.
  • the vehicles in R are forwarded by the surrounding vehicles, and the number of life cycles per transmission is reduced by 1. When the number of life cycles is 0, the forwarding is stopped, thereby avoiding broadcast storms and information redundancy.
  • FIG. 9 shows a schematic flow diagram of a communication method 900 in accordance with an embodiment of the present invention.
  • the method 900 can be performed by an intermediate node. As shown in FIG. 9, the method 900 includes:
  • the lifetime is reduced by a fixed value every time it is forwarded.
  • the fixed value may be 1, and the forwarding is stopped when the lifetime is zero, so that broadcast storm and information redundancy can be avoided.
  • the third information packet further includes an information level
  • the method also includes:
  • the third information packet is determined to include high priority information based on the information level.
  • the high priority information is safety road condition information.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • FIG. 10 shows a schematic block diagram of a forwarding device 1000 in accordance with an embodiment of the present invention. As shown in FIG. 10, the forwarding device 1000 includes:
  • the receiving module 1010 is configured to receive a first information packet, where the first information packet includes data and/or signaling sent by the first terminal device to the second terminal device;
  • the processing module 1020 is configured to forward the first information packet according to the predetermined area, where the predetermined area is an area that is set with a predetermined value centered on the forwarding device.
  • the forwarding device of the embodiment of the present invention can reduce the signaling overhead by forwarding the information packet according to the predetermined area, thereby improving communication efficiency.
  • the first information packet further includes location information of the second terminal device
  • the processing module 1020 is specifically configured to:
  • processing module 1020 is specifically configured to:
  • the first information packet is sent to the second forwarding device at the edge of the predetermined area, where the second forwarding device is located in the forwarding device that is close to the second terminal device. side.
  • processing module 1020 is configured to:
  • processing module 1020 is specifically configured to:
  • processing module 1020 is further configured to:
  • the time information of receiving the first information packet is written into the first information packet.
  • the first information packet further includes an information level
  • the processing module 1020 is further configured to:
  • the information level of the first information packet is determined to be a normal level according to the information level.
  • the predetermined value comprises a predetermined distance or a predetermined number of hops.
  • the location information of the second terminal device includes location information of the second terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or direction information at time T 0
  • T 0 represents a specific time before the first terminal device transmits the first information packet
  • ⁇ T represents a change in time
  • the first information packet further includes at least one of identifier information of the first terminal device, identifier information of the second terminal device, and location information of the first terminal device.
  • the forwarding device 1000 may correspond to a first forwarding device in a communication method according to an embodiment of the present invention, and the above-described and other operations and/or functions of the respective modules in the forwarding device 1000 respectively implement the foregoing respective methods The corresponding process, for the sake of brevity, will not be described here.
  • FIG. 11 shows a schematic block diagram of a terminal device 1100 according to an embodiment of the present invention. As shown in FIG. 11, the terminal device 1100 includes:
  • the obtaining module 1110 is configured to acquire location information of the second terminal device, where the second terminal device is a target terminal device of the terminal device;
  • the determining module 1120 is configured to determine, according to the location information of the second terminal device, at least one forwarding device, where the forwarding device is a forwarding device that the terminal device can access;
  • the sending module 1130 is configured to send, to the forwarding device, a first information packet, where the first information packet includes Data and/or signaling sent by the terminal device to the second terminal device.
  • the terminal device in the embodiment of the present invention performs directional transmission of the information packet according to the location information, thereby improving communication efficiency.
  • the first information packet further includes location information of the second terminal device.
  • the first information packet further includes time information that the terminal device sends the first information packet.
  • the determining module 1120 is further configured to:
  • the first information packet also includes the information level.
  • the first information packet further includes at least one of identifier information of the terminal device, identifier information of the second terminal device, and location information of the terminal device.
  • the location information of the terminal device includes location information of the terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or direction information at time T 0
  • the second The location information of the terminal device includes location information of the second terminal device at time T 0 and/or time T 0 + ⁇ T, or location information at time T 0 and/or direction information at time T 0
  • T 0 represents the terminal
  • ⁇ T represents a change in time.
  • the obtaining module 1110 is configured to:
  • the sending module 1130 is further configured to:
  • the terminal device 1100 may correspond to a first terminal device in a communication method according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the terminal device 1100 respectively implement the foregoing respective methods The corresponding process, for the sake of brevity, will not be described here.
  • FIG. 12 shows a schematic block diagram of a terminal device 1200 according to an embodiment of the present invention. As shown in FIG. 12, the terminal device 1200 includes:
  • the receiving module 1210 is configured to receive a first information packet, where the first information packet includes data and/or signaling sent by the first terminal device to the terminal device;
  • a determining module 1230 configured to determine, according to the received first information packet, a first reverse path, where the first reverse path is a reverse path of at least one sending path of the first information packet;
  • the sending module 1240 is configured to send, according to the first reverse path, a second information packet, where the second information packet includes data and/or signaling sent by the terminal device to the first terminal device.
  • the terminal device determines a reverse path from the transmission path of the first information packet according to the received first information packet, and can obtain a suitable reverse path, thereby improving communication efficiency.
  • the first information packet further includes time information, where the time information includes time information that the first terminal device sends the first information packet, and/or each forwarding device that forwards the first information packet receives the first information packet.
  • Time information of a packet includes time information that the first terminal device sends the first information packet, and/or each forwarding device that forwards the first information packet receives the first information packet.
  • the determining module 1230 is specifically configured to:
  • the first reverse path is determined.
  • the first reverse path is a reverse path of a sending path of the first packet with a minimum delay.
  • the terminal device 1200 may correspond to a second terminal device in a communication method according to an embodiment of the present invention, and the above-described and other operations and/or functions of respective modules in the terminal device 1200 respectively implement the foregoing respective methods
  • the corresponding process for the sake of brevity, will not be described here.
  • FIG. 13 shows a schematic block diagram of a communication device 1300 in accordance with an embodiment of the present invention. As shown in FIG. 13, the communication device 1300 includes:
  • the receiving module 1310 is configured to receive a third information packet, where the third information packet includes a life cycle
  • the processing module 1320 is configured to reduce the lifetime period by a fixed value when the lifetime is greater than zero, and broadcast the third packet.
  • the third information packet further includes an information level
  • the processing module 1320 is further configured to:
  • the third information packet is determined to include high priority information based on the information level.
  • the high priority information is safety road condition information.
  • the communication device of the embodiment of the invention can avoid broadcast storms and information redundancy.
  • FIG. 14 shows a schematic block diagram of a communication device 1400 in accordance with an embodiment of the present invention.
  • the communication device 1400 includes:
  • the processing module 1410 is configured to generate a third information packet, where the third information packet includes a life cycle
  • the sending module 1420 is configured to broadcast the third information packet, where the communication device that receives the third information packet reduces the lifetime to a fixed value and broadcasts the third information when the lifetime is greater than zero. package.
  • processing module 1410 is further configured to:
  • the third information packet further includes an information level indicating that the third information packet includes the high priority information.
  • the high priority information is safety road condition information.
  • the communication device of the embodiment of the invention can avoid broadcast storms and information redundancy.
  • FIG. 15 shows a structure of a communication device according to still another embodiment of the present invention, including at least one processor 1502 (for example, a CPU), at least one network interface 1505 or other communication interface, a memory 1506, and at least one communication bus 1503. Used to implement connection communication between these devices.
  • the processor 1502 is configured to execute executable modules, such as computer programs, stored in the memory 1506.
  • the memory 1506 may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory.
  • a communication connection with at least one other network element is achieved by at least one network interface 1505 (which may be wired or wireless).
  • the memory 1506 stores a program 15061
  • the processor 1502 executes the program 15061 for performing the communication method of any of the foregoing embodiments of the present invention.
  • the term "and/or” is merely an association relationship describing an associated object, indicating that there may be three relationships.
  • a and/or B may indicate that A exists separately, and A and B exist simultaneously, and B cases exist alone.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明公开了一种通信方法、转发设备和终端设备。该方法包括:第一转发设备接收第一信息包,该第一信息包包括第一终端设备发送给第二终端设备的数据和/或信令;该第一转发设备根据预定区域转发该第一信息包,其中该预定区域为以该第一转发设备为中心,以预定值设定范围的区域。本发明实施例的通信方法、转发设备和终端设备,能够减少信令开销,从而能够提高通信效率。

Description

通信方法、转发设备和终端设备 技术领域
本发明涉及通信领域,并且更具体地,涉及一种通信方法、转发设备和终端设备。
背景技术
当前,车载自组织网络(Vehicular Ad-hoc network,VANET)是移动互联网研究领域的热点方向。作为智能交通系统(Intelligent Transport System,ITS)的一个重要组成部分,车载自组织网络依靠车辆与路侧单元(Road Side Unit,RSU)、车车之间以及车与基站、路侧单元与基站之间的通信为基础,通过彼此交换实时可靠的安全信息以及多媒体业务信息来实现安全驾驶和车辆间彼此有效可靠的交互过程。随着全球定位系统(Global Positioning System,GPS)的普及,车载自组织网络中的行驶车辆可以有比较丰富的外部辅助信息,不仅可以获得自身的位置信息,还可以获得所在区域的地理信息,比如路口分布、道路方向、区域地图等。
车载自组织网络是传统移动自组织网络(Mobile Ad-hoc network,MANET)在道路上的具体应用,它具有移动自组织网络的各种特点,例如自治性、无固定结构、多跳路由、网络拓扑的动态变化等特点。目前车载自组织网络对于安全驾驶、行车舒适度等方面发挥重要作用,其应用主要可以分为两大类:一类主要解决行车安全问题,相应的所发送的消息为高优先级;另一类主要为用户提供增值业务,例如满足乘客在车中的多媒体娱乐等功能,相应的所发送的消息为低优先级。
车载自组织网络通常采用无线通信标准IEEE 802.11p,即专用短程通信技术(Dedicated Short Range Communications,DSRC)采用的通信标准,其通信覆盖范围很小,因此车辆在高速移动的环境中必然会出现频繁的切换过程。当收发车辆之间距离超过一定范围后必然要加大发射功率来保证车车通信的业务连续性,当车车距离继续增大时,简单的提高发送功率仍不能解决问题,收发车辆间采用多跳中继转发信息成为必须。
现有技术中,针对多跳中继节点的动态路由选择方案(即如何选择合适中继节点进行转发数据,进而确定合适的拓扑连接路径)主要分为集中式路 由选择方案和分布式路由选择方案,其中集中式路由选择属于动态路由算法的一种策略,即由基站负责整个网络系统内信息的收集和计算,最佳路径的规划和实现,基站定期的将实现方案发送到网络中各个节点,很明显基站需要耗费很大的资源来更新路由表,此外当车流量较大或处于交通高峰期时,集中式选择方案会对基站造成难以负荷的负载。分布式路由选择方案中每个节点在交互式的基础上与邻节点交换代价与路由信息,直至获得了最佳的拓扑连接路径为止,很明显中继节点间的交互广播过程会造成大量的无效广播,导致很大的信令开销,并且整个交互过程收敛度低,会耗费较大延时。
发明内容
本发明实施例提供了一种通信方法、转发设备和终端设备,能够降低信令开销,提高通信效率。
第一方面,提供了一种通信方法,包括:
第一转发设备接收第一信息包,该第一信息包包括第一终端设备发送给第二终端设备的数据和/或信令;
该第一转发设备根据预定区域转发该第一信息包,其中该预定区域为以该第一转发设备为中心,以预定值设定范围的区域。
本发明实施例的通信方法,根据预定区域转发信息包,能够减少信令开销,从而能够提高通信效率。
在一些可能的实现方式中,该第一信息包还包括该第二终端设备的位置信息;
该第一转发设备根据预定区域转发该第一信息包,包括:
该第一转发设备根据该预定区域和该第二终端设备的位置信息转发该第一信息包。
在一些可能的实现方式中,该第一转发设备根据预定区域和该第二终端设备的位置信息转发该第一信息包,包括:
若该第二终端设备不在该预定区域内,则该第一转发设备将该第一信息包发送给该预定区域边缘的第二转发设备,其中该第二转发设备位于该第一转发设备的靠近该第二终端设备的一侧。
在一些可能的实现方式中,该方法还包括:
该第一转发设备获取该预定区域内的路由信息;
该第一转发设备将该第一信息包发送给该预定区域边缘的第二转发设备,包括:
该第一转发设备根据该预定区域内的路由信息,将该第一信息包发送给该第二转发设备。
在一些可能的实现方式中,该第一转发设备根据预定区域和该第二终端设备的位置信息转发该第一信息包,包括:
若该第二终端设备在该预定区域内,则该第一转发设备将该第一信息包发送给该第二终端设备。
在一些可能的实现方式中,该方法还包括:
该第一转发设备在接收到该第一信息包时,将接收到该第一信息包的时间信息写入该第一信息包。
在一些可能的实现方式中,该第一信息包还包括信息等级;
在该第一转发设备根据预定区域转发该第一信息包之前,该方法还包括:
该第一转发设备根据该信息等级确定该第一信息包的信息等级为普通等级。
在一些可能的实现方式中,该预定值包括预定距离或预定跳数。
在一些可能的实现方式中,该第二终端设备的位置信息包括该第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示该第一终端设备发送该第一信息包以前的特定时刻,ΔT表示时刻的变化。
在一些可能的实现方式中,该第一信息包还包括该第一终端设备的标识信息、该第二终端设备的标识信息和该第一终端设备的位置信息中的至少一种。
第二方面,提供了一种通信方法,包括:
第一终端设备获取第二终端设备的位置信息,其中,该第二终端设备为该第一终端设备的目标终端设备;
该第一终端设备根据该第二终端设备的位置信息,确定至少一个转发设备,其中该转发设备为该第一终端设备能够接入的转发设备;
该第一终端设备向该转发设备发送第一信息包,该第一信息包包括该第一终端设备发送给该第二终端设备的数据和/或信令。
本发明实施例的通信方法,根据位置信息对信息包进行有向发送,能够提高通信效率。
在一些可能的实现方式中,该第一信息包还包括该第二终端设备的位置信息。
在一些可能的实现方式中,该第一信息包还包括该第一终端设备发送该第一信息包的时间信息。
在一些可能的实现方式中,在该第一终端设备获取第二终端设备的位置信息之前,该方法还包括:
该第一终端设备确定该第一信息包的信息等级为普通等级;
该第一信息包还包括该信息等级。
在一些可能的实现方式中,该第一信息包还包括该第一终端设备的标识信息、该第二终端设备的标识信息和该第一终端设备的位置信息中的至少一种。
在一些可能的实现方式中,该第一终端设备的位置信息包括该第一终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,该第二终端设备的位置信息包括该第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示该第一终端设备发送该第一信息包以前的特定时刻,ΔT表示时刻的变化。
在一些可能的实现方式中,该方法还包括:
该第一终端设备根据该第一终端设备的定位模块,获取该第一终端设备在T0时刻的位置信息,和/或确定该第一终端设备在T0+ΔT时刻的位置信息;或
该第一终端设备根据该第一终端设备的定位模块,获取该第一终端设备在T0时刻的位置信息,和/或确定第一终端在T0时刻的方向信息;
该第一终端设备获取第二终端设备的位置信息,包括:该第一终端设备接收基站发送的该第二终端设备的位置信息。
在一些可能的实现方式中,该方法还包括:
该第一终端设备向该基站发送该第一终端设备在T0时刻和/或T0+ΔT时刻的位置信息;或
该第一终端设备向该基站发送该第一终端设备在T0时刻的位置信息和/ 或T0方向信息。
第三方面,提供了一种通信方法,包括:
第二终端设备接收第一信息包,该第一信息包包括第一终端设备发送给第二终端设备的数据和/或信令;
该第二终端设备根据接收到的该第一信息包,确定第一反向路径,该第一反向路径为该第一信息包的至少一个发送路径的反向路径;
该第二终端设备根据该第一反向路径发送第二信息包,该第二信息包包括该第二终端设备发送给该第一终端设备的数据和/或信令。
本发明实施例的通信方法,根据接收到的第一信息包,从第一信息包的发送路径中确定反向路径,可以得到合适的反向路径,从而提高通信效率。
在一些可能的实现方式中,该第一信息包还包括时间信息,该时间信息包括该第一终端设备发送该第一信息包的时间信息和/或转发该第一信息包的每个转发设备接收到该第一信息包的时间信息;
该第二终端设备根据接收到的该第一信息包,确定第一反向路径,包括:
该第二终端设备根据该时间信息,确定该第一反向路径。
在一些可能的实现方式中,该第一反向路径为时延最小的该第一信息包的发送路径的反向路径。
第四方面,提供了一种通信方法,包括:
接收第三信息包,该第三信息包包括生存周期;
在该生存周期大于零时,将该生存周期减固定值,并广播该第三信息包。
本发明实施例的通信方法,能够避免广播风暴和信息冗余。
在一些可能的实现方式中,该第三信息包还包括信息等级;
该方法还包括:
根据该信息等级确定该第三信息包包括高优先级信息。
在一些可能的实现方式中,该高优先级信息为安全路况信息。
第五方面,提供了一种通信方法,包括:
生成并广播第三信息包,该第三信息包包括生存周期;
该生存周期用于接收到该第三信息包的通信设备在该生存周期大于零时,将该生存周期减固定值,并广播该第三信息包。
本发明实施例的通信方法,能够避免广播风暴和信息冗余。
在一些可能的实现方式中,在该生成第三信息包之前,该方法还包括:
确定待发送信息为高优先级信息;
该第三信息包还包括信息等级,该信息等级指示该第三信息包包括该高优先级信息。
在一些可能的实现方式中,该高优先级信息为安全路况信息。
第六方面,提供了一种转发设备,包括执行第一方面或第一方面的任意可能的实现方式中的方法的模块。
第七方面,提供了一种终端设备,包括执行第二方面或第二方面的任意可能的实现方式中的方法的模块。
第八方面,提供了一种终端设备,包括执行第三方面或第三方面的任意可能的实现方式中的方法的模块。
第九方面,提供了一种通信设备,包括执行第四方面或第四方面的任意可能的实现方式中的方法的模块。
第十方面,提供了一种通信设备,包括执行第五方面或第五方面的任意可能的实现方式中的方法的模块。
第十一方面,提供了一种转发设备。该网络设备包括处理器、存储器和通信接口。处理器与存储器和通信接口连接。存储器用于存储指令,处理器用于执行该指令,通信接口用于在处理器的控制下与其他网元进行通信。该处理器执行该存储器存储的指令时,该执行使得该处理器执行第一方面或第一方面的任意可能的实现方式中的方法。
第十二方面,提供了一种终端设备。该终端设备包括处理器、存储器和通信接口。处理器与存储器和通信接口连接。存储器用于存储指令,处理器用于执行该指令,通信接口用于在处理器的控制下与其他网元进行通信。该处理器执行该存储器存储的指令时,该执行使得该处理器执行第二方面或第二方面的任意可能的实现方式中的方法。
第十三方面,提供了一种终端设备。该终端设备包括处理器、存储器和通信接口。处理器与存储器和通信接口连接。存储器用于存储指令,处理器用于执行该指令,通信接口用于在处理器的控制下与其他网元进行通信。该处理器执行该存储器存储的指令时,该执行使得该处理器执行第三方面或第三方面的任意可能的实现方式中的方法。
第十四方面,提供了一种通信设备。该终端设备包括处理器、存储器和通信接口。处理器与存储器和通信接口连接。存储器用于存储指令,处理器 用于执行该指令,通信接口用于在处理器的控制下与其他网元进行通信。该处理器执行该存储器存储的指令时,该执行使得该处理器执行第四方面或第四方面的任意可能的实现方式中的方法。
第十五方面,提供了一种通信设备。该终端设备包括处理器、存储器和通信接口。处理器与存储器和通信接口连接。存储器用于存储指令,处理器用于执行该指令,通信接口用于在处理器的控制下与其他网元进行通信。该处理器执行该存储器存储的指令时,该执行使得该处理器执行第五方面或第五方面的任意可能的实现方式中的方法。
第十六方面,提供了一种计算机可读介质,用于存储计算机程序,该计算机程序包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的指令。
第十七方面,提供了一种计算机可读介质,用于存储计算机程序,该计算机程序包括用于执行第二方面或第二方面的任意可能的实现方式中的方法的指令。
第十八方面,提供了一种计算机可读介质,用于存储计算机程序,该计算机程序包括用于执行第三方面或第三方面的任意可能的实现方式中的方法的指令。
第十九方面,提供了一种计算机可读介质,用于存储计算机程序,该计算机程序包括用于执行第四方面或第四方面的任意可能的实现方式中的方法的指令。
第二十方面,提供了一种计算机可读介质,用于存储计算机程序,该计算机程序包括用于执行第五方面或第五方面的任意可能的实现方式中的方法的指令。
附图说明
为了更清楚地说明本发明实施例的技术方案,下面将对本发明实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明实施例的应用场景的示意图。
图2是本发明一个实施例的通信方法的示意性流程图。
图3是本发明另一实施例的通信方法的示意图。
图4是本发明又一实施例的通信方法的示意性流程图。
图5a和图5b是本发明实施例中的消息的示意图。
图6是本发明实施例中的信息包的示意图。
图7是本发明又一实施例的通信方法的示意性流程图。
图8是本发明又一实施例的通信方法的示意性流程图。
图9是本发明又一实施例的通信方法的示意性流程图。
图10是本发明实施例的转发设备的示意性框图。
图11是本发明一个实施例的终端设备的示意性框图。
图12是本发明另一实施例的终端设备的示意性框图。
图13是本发明一个实施例的通信设备的示意性框图。
图14是本发明另一实施例的通信设备的示意性框图。
图15是本发明又一实施例的通信设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明的一部分实施例,而不是全部实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例,都应属于本发明保护的范围。
应理解,本发明实施例的技术方案可以应用于各种车车通信或终端与终端通信的系统或网络中,例如:VANET、MANET等。
本发明实施例中的终端设备也可以指车辆、用户设备(User Equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字处理(Personal Digital Assistant,简称为“PDA”)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备,未来5G网络中的终端设备或者未来演进的PLMN网络中的终端设备等。
本发明实施例中的转发设备为转发终端设备的信息包的网络设备。例 如,转发设备可以为RSU或无线路由器等。
本发明实施例中的基站为通信系统中的网络设备,可以是GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB,NB),还可以是LTE中的演进型基站(Evolutional Node B,ENB或e-NodeB),本发明并不限定。
本发明实施例中的通信设备可以为上述任一种设备,即终端设备、转发设备或基站。
为了描述方便,下述实施例将以车辆、RSU和基站为例进行说明,但这不应理解为对本发明的限定。
图1是本发明实施例的一个应用场景的示意图。如图1所示,该场景中包括基站101;多个转发设备,例如转发设备111-117;多个终端设备,例如终端设备121和终端设备122。终端设备121欲与终端设备122进行通信。图1中的场景可以为交通场景,在这种情况下,终端设备可以为车辆,转发设备可以为RSU。
图2示出了根据本发明实施例的通信方法200的示意性流程图。该方法200由转发设备(表示为第一转发设备)执行,例如图1中的转发设备。如图2所示,该方法200包括:
S210,第一转发设备接收第一信息包,该第一信息包包括第一终端设备发送给第二终端设备的数据和/或信令;
S220,该第一转发设备根据预定区域转发该第一信息包,其中该预定区域为以该第一转发设备为中心,以预定值设定范围的区域。
在本发明实施例中,第一终端设备表示第一信息包的源节点,第二终端设备表示第一信息包的目标节点,第一转发设备表示第一信息包的转发过程中的任一转发设备。
第一转发设备根据预定区域转发该第一信息包,该预定区域为以该第一转发设备为中心,以预定值设定范围的区域。也就是说,第一转发设备不需要考虑整个网络,只需要考虑该预定区域,即,第一转发设备只需要获取该预定区域的信息,这样,相对于获取全网信息的方案,能够减少信令开销,从而能够提高通信效率。
因此,本发明实施例的通信方法,根据预定区域转发信息包,能够减少信令开销,从而能够提高通信效率。
应理解,在本发明实施例中,信息包携带通信设备之间传输的数据和/或信令,“信息包”也可以表述为“报文”、“消息”、“数据包”等,对于该具体的表述,本发明并不限定。
在本发明实施例中,预定区域为以转发设备为中心,以预定值设定范围的区域。该预定区域也可以称为虚拟区域,本发明实施例对该预定区域的表述不做限定。
每个转发设备都具有以自身为中心,以预定值设定范围的虚拟区域。
可选地,该预定值可以为预定距离或预定跳数。例如,该预定值可以为N跳,其中N为正整数。
例如,如图3所示,转发设备115的预定区域可以为以转发设备115为中心节点,跳数1为半径的区域。
不同转发设备所对应的预定区域可以重叠,即某个转发设备可以同时属于多个预定区域。
在每个预定区域内,距离中心节点跳数为N的节点可以称为区边节点,距离中心节点第N-1至0跳的节点定义为区内节点,如图3所示,由于跳数N值为1,所以转发设备115的预定区域内转发设备111、112、116为区边节点,转发设备115是区内节点。
可选地,在每个预定区域内,中心节点与其他节点周期性的互相交换并且更新当前预定区域内网络拓扑连接信息,从而获取该预定区域内的路由信息。也即是说,中心节点可以获得从本节点到预定区域内所有其余节点的路由信息,即可以获取到达区域内所有其余节点的路由信息。
在本发明实施例中,转发设备根据预定区域转发信息包,也就是说,将该信息包在该预定区域内转发。
可选地,在本发明一个实施例中,该第一信息包还包括该第二终端设备的位置信息;
该第一转发设备根据预定区域转发该第一信息包,包括:
该第一转发设备根据该预定区域和该第二终端设备的位置信息转发该第一信息包。
应理解,该第一转发设备还可以通过其他方式获取该第二终端设备的位置信息,换句话说,在该第一信息包中包括该第二终端设备的位置信息只是一种优选的实施方式,但本发明并不限定。
可选地,在本发明一个实施例中,该第一转发设备根据预定区域和该第二终端设备的位置信息转发该第一信息包,包括:
若该第二终端设备不在该预定区域内,则该第一转发设备将该第一信息包发送给该预定区域边缘的第二转发设备,其中该第二转发设备位于该第一转发设备的靠近该第二终端设备的一侧。
具体而言,该第一转发设备根据预定区域和该第二终端设备的位置信息确定该第二终端设备是否在该预定区域内,若该第二终端设备不在该预定区域内,则该第一转发设备将该第一信息包发送给该预定区域边缘的第二转发设备。该第二转发设备位于该第一转发设备的靠近该第二终端设备的一侧。也就是说,该第一转发设备将该第一信息包发送给沿第一终端设备到第二终端设备方向上的区边节点。
应理解,该第一转发设备将该第一信息包发送给该第二转发设备的方式可以是直接发送,也可以是间接发送。换句话说,在该第一转发设备不能将该第一信息包直接发送给该第二转发设备时,该第一转发设备可以将该第一信息包通过其他转发设备间接发送给该第二转发设备。
例如,以图3中的转发设备115为例,在终端设备121发送信息包给终端设备122时,转发设备115确定终端设备122不在转发设备115的预定区域内,因此将信息包沿终端设备121到终端设备122的方向发送,即可以发送给转发设备111或转发设备112。
可选地,该第一转发设备可先获取该预定区域内的路由信息,根据该预定区域内的路由信息,将该第一信息包发送给该第二转发设备。
如前该,该第一转发设备可以与该预定区域内其他转发设备周期性的互相交换并且更新当前预定区域内网络拓扑连接信息,从而获取该预定区域内的路由信息。
可选地,在本发明另一个实施例中,该第一转发设备根据预定区域和该第二终端设备的位置信息转发该第一信息包,包括:
若该第二终端设备在该预定区域内,则该第一转发设备将该第一信息包发送给该第二终端设备。
具体而言,该第一转发设备根据预定区域和该第二终端设备的位置信息确定该第二终端设备是否在该预定区域内,若该第二终端设备在该预定区域内,则该第一转发设备将该第一信息包发送给该第二终端设备。可选地,该 第一转发设备可以通过有向天线将该第一信息包发送给该第二终端设备。
应理解,该第一转发设备将该第一信息包发送给该第二终端设备的方式可以是直接发送,也可以是间接发送。换句话说,在该第一转发设备不能将该第一信息包直接发送给该第二终端设备时,该第一转发设备可以将该第一信息包通过其他转发设备间接发送给该第二终端设备。
例如,以图3中的转发设备113为例,在终端设备121发送信息包给终端设备122时,转发设备113确定终端设备122在转发设备113的预定区域内,因此直接将信息包发送给终端设备122。
可选地,在本发明一个实施例中,该方法还可以包括:
该第一转发设备在接收到该第一信息包时,将接收到该第一信息包的时间信息写入该第一信息包。
具体而言,第一终端设备在发送信息包时可以将发送时刻写入该信息包,每个转发设备将信息包的接收时刻写入信息包,这样,通过这些时刻可以确定链路的时延。
可选地,转发设备还可以将转发跳数写入信息包,
可选地,在本发明一个实施例中,该第一信息包还可以包括信息等级。
该信息等级指示该第一信息包的信息等级为普通等级。该信息等级可以由第一转发设备写入该第一信息包中。
该第一转发设备根据该信息等级确定该第一信息包的信息等级为普通等级。
可选地,在本发明一个实施例中,该第一信息包还可以包括该第一终端设备的标识信息、该第二终端设备的标识信息和该第一终端设备的位置信息中的至少一种。应理解,该第一信息包还可以包括其他字段,本发明对此并不限定。
可选地,在本发明一个实施例中,该第一终端设备的位置信息包括该第一终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,该第二终端设备的位置信息包括该第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示该第一终端设备发送该第一信息包以前的特定时刻,ΔT表示时刻的变化。
具体而言,每个终端设备可以根据自身的定位模块,例如GPS模块获 取自身在当前时刻T0的位置信息,例如经纬度坐标信息,确定在T0时刻的方向信息,根据自身的运动检测模块,确定自身速度、加速度等信息,从而预测自身在T0+ΔT时刻的位置信息。每个终端设备可以向基站发送该终端设备的位置信息,例如,将自身在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或方向信息,上报给基站,这样,信息包的发送终端设备可以向基站获取信息包的接收终端设备的位置信息。
以上从转发设备侧描述了本发明实施例的通信方法,下面从终端设备侧描述本发明实施例的通信方法。
图4示出了根据本发明实施例的通信方法400的示意性流程图。该方法400由信息包的源节点(表示为第一终端设备)执行,例如图1中的终端设备121。如图4所示,该方法400包括:
S410,第一终端设备获取第二终端设备的位置信息,其中,该第二终端设备为该第一终端设备的目标终端设备;
S420,该第一终端设备根据该第二终端设备的位置信息,确定至少一个转发设备,其中该转发设备为该第一终端设备能够接入的转发设备;
S430,该第一终端设备向该转发设备发送第一信息包,该第一信息包包括该第一终端设备发送给该第二终端设备的数据和/或信令。
在本发明实施例中,第一终端设备在欲发送数据给第二终端设备时,第二终端设备的位置信息,选择第一终端设备能够接入的转发设备,例如,选择位于该第一终端设备的靠近该第二终端设备的一侧的转发设备,将第一信息包发送给该转发设备,再由该转发设备继续转发该第一信息包。也就是说,第一终端设备根据位置信息对信息包进行有向发送,从而提高通信效率。
可选地,该第一信息包还可以包括该第二终端设备的位置信息。该第二终端设备的位置信息可用于后续的转发设备的有向转发。
可选地,该第一终端设备的位置信息包括该第一终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,该第二终端设备的位置信息包括该第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示该第一终端设备发送该第一信息包以前的特定时刻,ΔT表示时刻的变化。
可选地,该第一终端设备根据该第一终端设备的定位模块,获取该第一终端设备在T0时刻的位置信息,和/或确定该第一终端设备在T0+ΔT时刻的位 置信息;或
该第一终端设备根据该第一终端设备的定位模块,获取该第一终端设备在T0时刻的位置信息,和/或确定该第一终端在T0时刻的方向信息;
该第一终端设备接收基站发送的该第二终端设备的位置信息。
可选地,该方法还包括:
该第一终端设备向该基站发送该第一终端设备在T0时刻和/或T0+ΔT时刻的位置信息或
该第一终端设备向该基站发送该第一终端设备在T0时刻的位置信息和/或方向信息。
具体而言,每个终端设备可以根据自身的定位模块,例如GPS模块获取自身在当前时刻T0的位置信息,例如经纬度坐标信息,确定在T0时刻的方向信息,根据自身的运动检测模块,确定自身速度、加速度等信息,从而预测自身在T0+ΔT时刻的位置信息。每个终端设备可以向基站发送该终端设备的位置信息,例如,将自身在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或方向信息,上报给基站,这样,信息包的发送终端设备可以向基站获取信息包的接收终端设备的位置信息。
在本发明实施例中,该第一终端设备可以根据该第一终端设备的定位模块,获取该第一终端设备在T0时刻的位置信息,确定在T0时刻的方向信息,根据该第一终端设备的运动检测模块确定该第一终端设备在T0+ΔT时刻的位置信息。
然后,该第一终端设备向基站请求该第二终端设备的位置信息。例如,第一终端设备可以向基站如图5a所示的请求消息。基站将该第二终端设备上报的该第二终端设备的位置信息,例如该第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或方向信息,发送给该第一终端设备。例如,终端设备向基站上报位置信息的消息和基站向终端设备发送位置信息的消息可以采用如图5b所示的消息。
可选地,在获取了该第一终端设备的位置信息和该第二终端设备的位置信息后,该第一终端设备可以根据该第一终端设备的位置信息和该第二终端设备的位置信息确定下一跳路由设备。在本发明实施例中,优选地,所确定的下一跳路由设备位于该第一终端设备的靠近该第二终端设备的一侧。
例如,终端设备上可配备电子地图,终端设备通过电子地图根据收发两 端的位置信确定收发两端之间可能存在的多种多跳转发路径,从而确定可能的下一跳。若收发两端之间距离为L,转发设备的分布密度为λ,则在以收发两端直线距离为对角线的正方形内有λL2/2个转发设备,可预设选定α×λL2/2条转发路径作为候选方案,其中α为预选路径百分比。
例如,以图3为例,在终端设备121发送信息包给终端设备122时,终端设备121根据终端设备121和终端设备122的位置可选择转发设备116或转发设备115作为下一跳。
可选地,该第一信息包还可以包括该第一终端设备发送该第一信息包的时间信息,例如时刻。该时间信息可以用于确定链路的时延。
可选地,该第一信息包还可以包括信息等级,该信息等级指示该第一信息包的信息等级为普通等级。
可选地,该方法还包括:
该第一终端设备确定该第一信息包的信息等级为普通等级。
可选地,该第一信息包还包括该第一终端设备的标识信息、该第二终端设备的标识信息和该第一终端设备的位置信息中的至少一种。
例如,该第一信息包可以采用如图6所示的格式。应理解,图6仅是一种示例,实际应用时,第一信息包可以采用比图6所示更多或更少的字段。
第一终端设备将第一信息包发送给下一跳转发设备后,转发设备可根据前述本发明实施例描述的转发设备侧的方法转发该第一信息包,从而将该第一信息包最终发送给第二终端设备。
下面结合图3,以一个具体的例子描述本发明实施例的技术方案。
如图3所示,在终端设备121发送信息包给终端设备122时,终端设备121根据终端设备121和终端设备122的位置可选择转发设备116作为下一跳,将信息包发送给转发设备116;
转发设备116确定终端设备122不在转发设备116的预定区域内,因此将信息包沿终端设备121到终端设备122的方向发送,即可以发送给转发设备115;
转发设备115确定终端设备122不在转发设备115的预定区域内,因此将信息包沿终端设备121到终端设备122的方向发送,即可以发送给转发设备112;
转发设备112确定终端设备122不在转发设备112的预定区域内,因此 将信息包沿终端设备121到终端设备122的方向发送,即可以发送给转发设备117;
转发设备117确定终端设备122不在转发设备117的预定区域内,因此将信息包沿终端设备121到终端设备122的方向发送,即可以发送给转发设备114;
转发设备114确定终端设备122不在转发设备114的预定区域内,因此将信息包沿终端设备121到终端设备122的方向发送,即可以发送给转发设备113;
转发设备113确定终端设备122在转发设备113的预定区域内,因此直接将信息包发送给终端设备122。
图7示出了根据本发明实施例的通信方法700的示意性流程图。该方法700由信息包的目标节点(表示为第二终端设备)执行,例如图1中的终端设备122。如图7所示,该方法700包括:
S710,第二终端设备接收第一信息包,该第一信息包包括第一终端设备发送给第二终端设备的数据和/或信令;
S720,该第二终端设备根据接收到的该第一信息包,确定第一反向路径,该第一反向路径为该第一信息包的至少一个发送路径的反向路径;
S730,该第二终端设备根据该第一反向路径发送第二信息包,该第二信息包包括该第二终端设备发送给该第一终端设备的数据和/或信令。
在本发明实施例中,第二终端设备在接收到第一终端设备的第一信息包时,根据接收到的第一信息包,从第一信息包的发送路径中确定反向路径,这样可以得到合适的反向路径,从而提高通信效率。
可选地,该第一信息包还包括时间信息,该时间信息包括该第一终端设备发送该第一信息包的时间信息和/或转发该第一信息包的每个转发设备接收到该第一信息包的时间信息;
该第二终端设备根据接收到的该第一信息包,确定第一反向路径,包括:
该第二终端设备根据该时间信息,确定该第一反向路径。
可选地,该第一反向路径为时延最小的该第一信息包的发送路径的反向路径。
具体而言,该第二终端设备可选择时延最小的第一信息包的发送路径的反向路径,向第一终端设备反向发送第二信息包。
可选地,第二信息包的格式可以与第一信息包类似。
在本发明实施例中,可选地,基站可以为所覆盖范围内的节点定期配发各条链路的时延阈值、速率阈值,该阈值可用来判定当前节点是否有继续转发信息包的必要。
在本发明实施例中,可选地,基站可以根据当前的终端设备密度和转发设备密度,设定合适的预定值,以保证在一定通信速率前提下,尽可能小的时延通信,同时又不会因为预定区域内路由信息交互过大而造成资源浪费。
以上描述了发送普通业务数据的方法,下面描述发送高优先级信息的方法。
图8示出了根据本发明实施例的通信方法800的示意性流程图。该方法800可由首节点执行,例如图1中的第一终端设备。如图8所示,该方法800包括:
S810,生成第三信息包,该第三信息包包括生存周期;
S820,广播该第三信息包,该生存周期用于接收到该第三信息包的通信设备在该生存周期大于零时,将该生存周期减固定值,并广播该第三信息包。
在本发明实施例中,在信息包中设定生存周期,后续每转发一次,生存周期减固定值,例如,该固定值可以为1,当生存周期为零时停止转发,这样能够避免广播风暴和信息冗余。
可选地,在生成第三信息包之前,该方法还包括:
确定待发送信息为高优先级信息;
该第三信息包还包括信息等级,该信息等级指示该第三信息包包括该高优先级信息。
可选地,该高优先级信息为安全路况信息。
例如,若待发送信息为安全路况信息,即表明当前发送车辆所处路段出现拥堵现象,周围车辆应尽快避开拥堵路段,发送车辆预设安全路况信息的生存周期,并将信息广播给周围半径R内的车辆,周围车辆进行转发,每转发一次生存周期数减1,当生存周期数为0时停止转发,从而避免广播风暴和信息冗余。
图9示出了根据本发明实施例的通信方法900的示意性流程图。该方法900可由中间节点执行。如图9所示,该方法900包括:
S910,接收第三信息包,该第三信息包包括生存周期;
S920,在该生存周期大于零时,将该生存周期减固定值,并广播该第三信息包。
在本发明实施例中,在转发信息包时,每转发一次,生存周期减固定值,例如,该固定值可以为1,当生存周期为零时停止转发,这样能够避免广播风暴和信息冗余。
可选地,该第三信息包还包括信息等级;
该方法还包括:
根据该信息等级确定该第三信息包包括高优先级信息。
可选地,该高优先级信息为安全路况信息。
应理解,在本发明的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。
上文详细描述了根据本发明实施例的通信方法,下面将描述根据本发明实施例的各种设备。应理解,本发明实施例的各种设备可以执行前述本发明实施例的各种方法,即以下各种设备的具体工作过程,可以参考前述方法实施例中的对应过程。
图10示出了根据本发明实施例的转发设备1000的示意性框图。如图10所示,该转发设备1000包括:
接收模块1010,用于接收第一信息包,该第一信息包包括第一终端设备发送给第二终端设备的数据和/或信令;
处理模块1020,用于根据预定区域转发该第一信息包,其中该预定区域为以该转发设备为中心,以预定值设定范围的区域。
本发明实施例的转发设备,根据预定区域转发信息包,能够减少信令开销,从而能够提高通信效率。
可选地,该第一信息包还包括该第二终端设备的位置信息;
该处理模块1020具体用于:
根据该预定区域和该第二终端设备的位置信息转发该第一信息包。
可选地,该处理模块1020具体用于:
若该第二终端设备不在该预定区域内,则将该第一信息包发送给该预定区域边缘的第二转发设备,其中该第二转发设备位于该转发设备的靠近该第二终端设备的一侧。
可选地,该处理模块1020用于:
获取该预定区域内的路由信息;
根据该预定区域内的路由信息,将该第一信息包发送给该第二转发设备。
可选地,该处理模块1020具体用于:
若该第二终端设备在该预定区域内,则将该第一信息包发送给该第二终端设备。
可选地,该处理模块1020还用于:
在接收到该第一信息包时,将接收到该第一信息包的时间信息写入该第一信息包。
可选地,该第一信息包还包括信息等级;
该处理模块1020还用于:
根据该信息等级确定该第一信息包的信息等级为普通等级。
可选地,该预定值包括预定距离或预定跳数。
可选地,该第二终端设备的位置信息包括该第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示该第一终端设备发送该第一信息包以前的特定时刻,ΔT表示时刻的变化。
可选地,该第一信息包还包括该第一终端设备的标识信息、该第二终端设备的标识信息和该第一终端设备的位置信息中的至少一种。
根据本发明实施例的转发设备1000可对应于根据本发明实施例的通信方法中的第一转发设备,并且转发设备1000中的各个模块的上述和其它操作和/或功能分别为了实现前述各个方法的相应流程,为了简洁,在此不再赘述。
图11示出了根据本发明实施例的终端设备1100的示意性框图。如图11所示,该终端设备1100包括:
获取模块1110,用于获取第二终端设备的位置信息,其中,该第二终端设备为该终端设备的目标终端设备;
确定模块1120,用于根据该第二终端设备的位置信息,确定至少一个转发设备,其中该转发设备为该终端设备能够接入的转发设备;
发送模块1130,用于向该转发设备发送第一信息包,该第一信息包包括 该终端设备发送给该第二终端设备的数据和/或信令。
本发明实施例的终端设备,根据位置信息对信息包进行有向发送,能够提高通信效率。
可选地,该第一信息包还包括该第二终端设备的位置信息。
可选地,该第一信息包还包括该终端设备发送该第一信息包的时间信息。
可选地,该确定模块1120还用于:
确定该第一信息包的信息等级为普通等级;
该第一信息包还包括该信息等级。
可选地,该第一信息包还包括该终端设备的标识信息、该第二终端设备的标识信息和该终端设备的位置信息中的至少一种。
可选地,该终端设备的位置信息包括该终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,该第二终端设备的位置信息包括该第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示该终端设备发送该第一信息包以前的特定时刻,ΔT表示时刻的变化。
可选地,该获取模块1110用于:
根据该终端设备的定位模块,获取该终端设备在T0时刻的位置信息,和/或确定该终端设备在T0+ΔT时刻的位置信息;或根据该终端设备的定位模块,获取该终端设备在T0时刻的位置信息,和/或确定该终端设备在T0时刻方向信息;
接收基站发送的该第二终端设备的位置信息。
可选地,该发送模块1130还用于:
向该基站发送该终端设备在T0时刻和/或T0+ΔT时刻的位置信息;或向该基站发送该终端设备在T0时刻的位置信息和/或方向信息。
根据本发明实施例的终端设备1100可对应于根据本发明实施例的通信方法中的第一终端设备,并且终端设备1100中的各个模块的上述和其它操作和/或功能分别为了实现前述各个方法的相应流程,为了简洁,在此不再赘述。
图12示出了根据本发明实施例的终端设备1200的示意性框图。如图12所示,该终端设备1200包括:
接收模块1210,用于接收第一信息包,该第一信息包包括第一终端设备发送给终端设备的数据和/或信令;
确定模块1230,用于根据接收到的该第一信息包,确定第一反向路径,该第一反向路径为该第一信息包的至少一个发送路径的反向路径;
发送模块1240,用于根据该第一反向路径发送第二信息包,该第二信息包包括该终端设备发送给该第一终端设备的数据和/或信令。
本发明实施例的终端设备,根据接收到的第一信息包,从第一信息包的发送路径中确定反向路径,可以得到合适的反向路径,从而提高通信效率。
可选地,该第一信息包还包括时间信息,该时间信息包括该第一终端设备发送该第一信息包的时间信息和/或转发该第一信息包的每个转发设备接收到该第一信息包的时间信息;
该确定模块1230具体用于:
根据该时间信息,确定该第一反向路径。
可选地,该第一反向路径为时延最小的该第一信息包的发送路径的反向路径。
根据本发明实施例的终端设备1200可对应于根据本发明实施例的通信方法中的第二终端设备,并且终端设备1200中的各个模块的上述和其它操作和/或功能分别为了实现前述各个方法的相应流程,为了简洁,在此不再赘述。
图13示出了根据本发明实施例的通信设备1300的示意性框图。如图13所示,该通信设备1300包括:
接收模块1310,用于接收第三信息包,该第三信息包包括生存周期;
处理模块1320,用于在该生存周期大于零时,将该生存周期减固定值,并广播该第三信息包。
可选地,该第三信息包还包括信息等级;
该处理模块1320还用于:
根据该信息等级确定该第三信息包包括高优先级信息。
可选地,该高优先级信息为安全路况信息。
本发明实施例的通信设备,能够避免广播风暴和信息冗余。
图14示出了根据本发明实施例的通信设备1400的示意性框图。如图14所示,该通信设备1400包括:
处理模块1410,用于生成第三信息包,该第三信息包包括生存周期;
发送模块1420,用于广播该第三信息包,该生存周期用于接收到该第三信息包的通信设备在该生存周期大于零时,将该生存周期减固定值,并广播该第三信息包。
可选地,该处理模块1410还用于:
确定待发送信息为高优先级信息;
该第三信息包还包括信息等级,该信息等级指示该第三信息包包括该高优先级信息。
可选地,该高优先级信息为安全路况信息。
本发明实施例的通信设备,能够避免广播风暴和信息冗余。
图15示出了本发明的又一实施例提供的通信设备的结构,包括至少一个处理器1502(例如CPU),至少一个网络接口1505或者其他通信接口,存储器1506,和至少一个通信总线1503,用于实现这些装置之间的连接通信。处理器1502用于执行存储器1506中存储的可执行模块,例如计算机程序。存储器1506可能包含高速随机存取存储器(RAM:Random Access Memory),也可能还包括非不稳定的存储器(non-volatile memory),例如至少一个磁盘存储器。通过至少一个网络接口1505(可以是有线或者无线)实现与至少一个其他网元之间的通信连接。
在一些实施方式中,存储器1506存储了程序15061,处理器1502执行程序15061,用于执行前述本发明任一实施例的通信方法。
应理解,本文中的具体的例子只是为了帮助本领域技术人员更好地理解本发明实施例,而非限制本发明实施例的范围。
应理解,在本发明实施例中,术语“和/或”仅仅是一种描述关联对象的关联关系,表示可以存在三种关系。例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个 特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到,为了描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另外,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接,也可以是电的,机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分,或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易 想到各种等效的修改或替换,这些修改或替换都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以权利要求的保护范围为准。

Claims (48)

  1. 一种通信方法,其特征在于,包括:
    第一转发设备接收第一信息包,所述第一信息包包括第一终端设备发送给第二终端设备的数据和/或信令;
    所述第一转发设备根据预定区域转发所述第一信息包,其中所述预定区域为以所述第一转发设备为中心,以预定值设定范围的区域。
  2. 根据权利要求1所述的方法,其特征在于,所述第一信息包还包括所述第二终端设备的位置信息;
    所述第一转发设备根据预定区域转发所述第一信息包,包括:
    所述第一转发设备根据所述预定区域和所述第二终端设备的位置信息转发所述第一信息包。
  3. 根据权利要求2所述的方法,其特征在于,所述第一转发设备根据所述预定区域和所述第二终端设备的位置信息转发所述第一信息包,包括:
    若所述第二终端设备不在所述预定区域内,则所述第一转发设备将所述第一信息包发送给所述预定区域边缘的第二转发设备,其中所述第二转发设备位于所述第一转发设备的靠近所述第二终端设备的一侧。
  4. 根据权利要求3所述的方法,其特征在于,所述方法还包括:
    所述第一转发设备获取所述预定区域内的路由信息;
    所述第一转发设备将所述第一信息包发送给所述预定区域边缘的第二转发设备,包括:
    所述第一转发设备根据所述预定区域内的路由信息,将所述第一信息包发送给所述第二转发设备。
  5. 根据权利要求2所述的方法,其特征在于,所述第一转发设备根据所述预定区域和所述第二终端设备的位置信息转发所述第一信息包,包括:
    若所述第二终端设备在所述预定区域内,则所述第一转发设备将所述第一信息包发送给所述第二终端设备。
  6. 根据权利要求1至5中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一转发设备在接收到所述第一信息包时,将接收到所述第一信息包的时间信息写入所述第一信息包。
  7. 根据权利要求1至6中任一项所述的方法,其特征在于,所述第一 信息包还包括信息等级;
    在所述第一转发设备根据预定区域转发所述第一信息包之前,所述方法还包括:
    所述第一转发设备根据所述信息等级确定所述第一信息包的信息等级为普通等级。
  8. 根据权利要求1至7中任一项所述的方法,其特征在于,所述预定值包括预定距离或预定跳数。
  9. 根据权利要求2至5中任一项所述的方法,其特征在于,所述第二终端设备的位置信息包括所述第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示所述第一终端设备发送所述第一信息包以前的特定时刻,ΔT表示时刻的变化。
  10. 根据权利要求1至9中任一项所述的方法,其特征在于,所述第一信息包还包括所述第一终端设备的标识信息、所述第二终端设备的标识信息和所述第一终端设备的位置信息中的至少一种。
  11. 一种通信方法,其特征在于,包括:
    第一终端设备获取第二终端设备的位置信息,其中,所述第二终端设备为所述第一终端设备的目标终端设备;
    所述第一终端设备根据所述第二终端设备的位置信息,确定至少一个转发设备,其中所述转发设备为所述第一终端设备能够接入的转发设备;
    所述第一终端设备向所述转发设备发送第一信息包,所述第一信息包包括所述第一终端设备发送给所述第二终端设备的数据和/或信令。
  12. 根据权利要求11所述的方法,其特征在于,所述第一信息包还包括所述第二终端设备的位置信息。
  13. 根据权利要求11或12所述的方法,其特征在于,所述第一信息包还包括所述第一终端设备发送所述第一信息包的时间信息。
  14. 根据权利要求11至13中任一项所述的方法,其特征在于,在所述第一终端设备获取所述第二终端设备的位置信息之前,所述方法还包括:
    所述第一终端设备确定所述第一信息包的信息等级为普通等级;
    所述第一信息包还包括所述信息等级。
  15. 根据权利要求11至14中任一项所述的方法,其特征在于,所述第一信息包还包括所述第一终端设备的标识信息、所述第二终端设备的标识信 息和所述第一终端设备的位置信息中的至少一种。
  16. 根据权利要求15所述的方法,其特征在于,所述第一终端设备的位置信息包括所述第一终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,所述第二终端设备的位置信息包括所述第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示所述第一终端设备发送所述第一信息包以前的特定时刻,ΔT表示时刻的变化。
  17. 根据权利要求16所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备根据所述第一终端设备的定位模块,获取所述第一终端设备在T0时刻的位置信息,和/或确定所述第一终端设备在T0+ΔT时刻的位置信息;或
    所述第一终端设备根据所述第一终端设备的定位模块,获取所述第一终端设备在T0时刻的位置信息,和/或确定所述第一终端在T0时刻的方向信息;
    所述第一终端设备获取第二终端设备的位置信息,包括:所述第一终端设备接收基站发送的所述第二终端设备的位置信息。
  18. 根据权利要求17所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备向所述基站发送所述第一终端设备在T0时刻和/或T0+ΔT时刻的位置信息;或
    所述第一终端设备向所述基站发送所述第一终端设备在T0时刻的位置信息和/或方向信息。
  19. 一种通信方法,其特征在于,包括:
    第二终端设备接收第一信息包,所述第一信息包包括第一终端设备发送给所述第二终端设备的数据和/或信令;
    所述第二终端设备根据接收到的所述第一信息包,确定第一反向路径,所述第一反向路径为所述第一信息包的至少一个发送路径的反向路径;
    所述第二终端设备根据所述第一反向路径发送第二信息包,所述第二信息包包括所述第二终端设备发送给所述第一终端设备的数据和/或信令。
  20. 根据权利要求19所述的方法,其特征在于,所述第一信息包还包括时间信息,所述时间信息包括所述第一终端设备发送所述第一信息包的时间信息和/或转发所述第一信息包的每个转发设备接收到所述第一信息包的时间信息;
    所述第二终端设备根据接收到的所述第一信息包,确定第一反向路径,包括:
    所述第二终端设备根据所述时间信息,确定所述第一反向路径。
  21. 一种通信方法,其特征在于,包括:
    接收第三信息包,所述第三信息包包括生存周期;
    在所述生存周期大于零时,将所述生存周期减固定值,并广播所述第三信息包。
  22. 根据权利要求21所述的方法,其特征在于,所述第三信息包还包括信息等级;
    所述方法还包括:
    根据所述信息等级确定所述第三信息包包括高优先级信息,所述高优先级信息为安全路况信息。
  23. 一种通信方法,其特征在于,包括:
    生成并广播第三信息包,所述第三信息包包括生存周期;
    所述生存周期用于接收到所述第三信息包的通信设备在所述生存周期大于零时,将所述生存周期减固定值,并广播所述第三信息包。
  24. 根据权利要求23所述的方法,其特征在于,在生成第三信息包之前,所述方法还包括:
    确定待发送信息为高优先级信息;
    所述第三信息包还包括信息等级,所述信息等级指示所述第三信息包包括所述高优先级信息,所述高优先级信息为安全路况信息。
  25. 一种转发设备,其特征在于,包括:
    接收模块,用于接收第一信息包,所述第一信息包包括第一终端设备发送给第二终端设备的数据和/或信令;
    处理模块,用于根据预定区域转发所述第一信息包,其中所述预定区域为以所述转发设备为中心,以预定值设定范围的区域。
  26. 根据权利要求25所述的转发设备,其特征在于,所述第一信息包还包括所述第二终端设备的位置信息;
    所述处理模块具体用于:
    根据所述预定区域和所述第二终端设备的位置信息转发所述第一信息包。
  27. 根据权利要求26所述的转发设备,其特征在于,所述处理模块具体用于:
    若所述第二终端设备不在所述预定区域内,则将所述第一信息包发送给所述预定区域边缘的第二转发设备,其中所述第二转发设备位于所述转发设备的靠近所述第二终端设备的一侧。
  28. 根据权利要求27所述的转发设备,其特征在于,所述处理模块用于:
    获取所述预定区域内的路由信息;
    根据所述预定区域内的路由信息,将所述第一信息包发送给所述第二转发设备。
  29. 根据权利要求26所述的转发设备,其特征在于,所述处理模块具体用于:
    若所述第二终端设备在所述预定区域内,则将所述第一信息包发送给所述第二终端设备。
  30. 根据权利要求25至29中任一项所述的转发设备,其特征在于,所述处理模块还用于:
    在接收到所述第一信息包时,将接收到所述第一信息包的时间信息写入所述第一信息包。
  31. 根据权利要求25至30中任一项所述的转发设备,其特征在于,所述第一信息包还包括信息等级;
    所述处理模块还用于:
    根据所述信息等级确定所述第一信息包的信息等级为普通等级。
  32. 根据权利要求25至31中任一项所述的转发设备,其特征在于,所述预定值包括预定距离或预定跳数。
  33. 根据权利要求25至32中任一项所述的转发设备,其特征在于,所述第二终端设备的位置信息包括所述第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示所述第一终端设备发送所述第一信息包以前的特定时刻,ΔT表示时刻的变化。
  34. 根据权利要求25至33中任一项所述的转发设备,其特征在于,所述第一信息包还包括所述第一终端设备的标识信息、所述第二终端设备的标识信息和所述第一终端设备的位置信息中的至少一种。
  35. 一种终端设备,其特征在于,包括:
    获取模块,用于获取第二终端设备的位置信息,其中,所述第二终端设备为所述终端设备的目标终端设备;
    确定模块,用于根据所述第二终端设备的位置信息,确定至少一个转发设备,其中所述转发设备为所述终端设备能够接入的转发设备;
    发送模块,用于向所述转发设备发送第一信息包,所述第一信息包包括所述终端设备发送给所述第二终端设备的数据和/或信令。
  36. 根据权利要求35所述的终端设备,其特征在于,所述第一信息包还包括所述第二终端设备的位置信息。
  37. 根据权利要求35或36所述的终端设备,其特征在于,所述第一信息包还包括所述终端设备发送所述第一信息包的时间信息。
  38. 根据权利要求35至37中任一项所述的终端设备,其特征在于,所述确定模块还用于:
    确定所述第一信息包的信息等级为普通等级;
    所述第一信息包还包括所述信息等级。
  39. 根据权利要求35至38中任一项所述的终端设备,其特征在于,所述第一信息包还包括所述终端设备的标识信息、所述第二终端设备的标识信息和所述终端设备的位置信息中的至少一种。
  40. 根据权利要求39所述的终端设备,其特征在于,所述终端设备的位置信息包括所述终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,所述第二终端设备的位置信息包括所述第二终端设备在T0时刻和/或T0+ΔT时刻的位置信息,或T0时刻的位置信息和/或T0时刻的方向信息,其中T0表示所述终端设备发送所述第一信息包以前的特定时刻,ΔT表示时刻的变化。
  41. 根据权利要求40所述的终端设备,其特征在于,所述获取模块用于:
    根据所述终端设备的定位模块,获取所述终端设备在T0时刻的位置信息,和/或确定所述终端设备在T0+ΔT时刻的位置信息;或根据所述终端设备的定位模块,获取所述终端设备在T0时刻的位置信息,和/或确定所述终端设备在T0时刻方向信息;
    接收基站发送的所述第二终端设备的位置信息。
  42. 根据权利要求41所述的终端设备,其特征在于,所述发送模块还用于:
    向所述基站发送所述终端设备在T0时刻和/或T0+ΔT时刻的位置信息;或向所述基站发送所述终端设备在T0时刻的位置信息和/或方向信息。
  43. 一种终端设备,其特征在于,包括:
    接收模块,用于接收第一信息包,所述第一信息包包括第一终端设备发送给所述终端设备的数据和/或信令;
    确定模块,用于根据接收到的所述第一信息包,确定第一反向路径,所述第一反向路径为所述第一信息包的至少一个发送路径的反向路径;
    发送模块,用于根据所述第一反向路径发送第二信息包,所述第二信息包包括所述终端设备发送给所述第一终端设备的数据和/或信令。
  44. 根据权利要求43所述的终端设备,其特征在于,所述第一信息包还包括时间信息,所述时间信息包括所述第一终端设备发送所述第一信息包的时间信息和/或转发所述第一信息包的每个转发设备接收到所述第一信息包的时间信息;
    所述确定模块具体用于:
    根据所述时间信息,确定所述第一反向路径。
  45. 一种通信设备,其特征在于,包括:
    接收模块,用于接收第三信息包,所述第三信息包包括生存周期;
    处理模块,用于在所述生存周期大于零时,将所述生存周期减固定值,并广播所述第三信息包。
  46. 根据权利要求45所述的通信设备,其特征在于,所述第三信息包还包括信息等级;
    所述处理模块还用于:
    根据所述信息等级确定所述第三信息包包括高优先级信息,所述高优先级信息为安全路况信息。
  47. 一种通信设备,其特征在于,包括:
    处理模块,用于生成第三信息包,所述第三信息包包括生存周期;
    发送模块,用于广播所述第三信息包,所述生存周期用于接收到所述第三信息包的通信设备在所述生存周期大于零时,将所述生存周期减固定值,并广播所述第三信息包。
  48. 根据权利要求47所述的通信设备,其特征在于,所述处理模块还用于:
    确定待发送信息为高优先级信息;
    所述第三信息包还包括信息等级,所述信息等级指示所述第三信息包包括所述高优先级信息,所述高优先级信息为安全路况信息。
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