WO2018010139A1 - 群组通信装置、方法以及通信系统 - Google Patents

群组通信装置、方法以及通信系统 Download PDF

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Publication number
WO2018010139A1
WO2018010139A1 PCT/CN2016/090016 CN2016090016W WO2018010139A1 WO 2018010139 A1 WO2018010139 A1 WO 2018010139A1 CN 2016090016 W CN2016090016 W CN 2016090016W WO 2018010139 A1 WO2018010139 A1 WO 2018010139A1
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WO
WIPO (PCT)
Prior art keywords
message
group
information
user equipment
communication device
Prior art date
Application number
PCT/CN2016/090016
Other languages
English (en)
French (fr)
Inventor
蒋琴艳
周华
郤伟
Original Assignee
富士通株式会社
蒋琴艳
周华
郤伟
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 富士通株式会社, 蒋琴艳, 周华, 郤伟 filed Critical 富士通株式会社
Priority to PCT/CN2016/090016 priority Critical patent/WO2018010139A1/zh
Priority to CN202210443788.8A priority patent/CN114979971B/zh
Priority to CN201680087025.7A priority patent/CN109314992B/zh
Publication of WO2018010139A1 publication Critical patent/WO2018010139A1/zh
Priority to US16/239,034 priority patent/US11284224B2/en
Priority to US17/669,473 priority patent/US20220167125A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/009—Security arrangements; Authentication; Protecting privacy or anonymity specially adapted for networks, e.g. wireless sensor networks, ad-hoc networks, RFID networks or cloud networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a group communication apparatus, method, and communication system.
  • the vehicle may indicate the resource location of the data information of the message, the modulation and demodulation mode, the target receiver, etc. through the control information of the message; the control information is, for example, a physical side link control channel (PSCCH, Physical Sidelink Control Channel). Bearer Control Information (SCI, Sidelink Control Information). After receiving the SCI, the vehicle can successfully receive the data information according to the information contained in the SCI.
  • PSCCH Physical Sidelink Control Channel
  • SCI Sidelink Control Information
  • 3GPP proposes a typical automatic driving scenario for vehicle communication, that is, multiple vehicles can form a fleet, and the first vehicle manages and controls the entire fleet to travel forward, thereby reducing the vehicle spacing. And energy saving.
  • the inventors have found that in the above-described automatic driving scenario, the vehicle in the fleet not only needs internal information or private information such as the driving route of the vehicle team interacting with the vehicle inside the vehicle, but also needs to exchange information such as the state of the fleet with the vehicle or equipment outside the fleet.
  • groups or queues
  • internal members or external devices need to selectively receive messages of different target ranges; on the other hand, in order to avoid potential security threats, the internal or private information of the group should be Try to ensure that only internal members can receive it.
  • the existing direct communication technology between devices still cannot meet the needs of the above group communication.
  • Embodiments of the present invention provide a group communication apparatus, method, and communication system.
  • Group members or external devices can selectively receive messages of different types or different target ranges.
  • a group communication method which is applied to a first user equipment, where the group communication method includes:
  • Decoding the data information of the message by using corresponding scrambling information according to the message type and/or the message sending range; wherein different message types and/or the message sending range correspond to different scrambling information;
  • the scrambled data information is sent to the second user equipment.
  • a group communication device configured in a first user equipment, where the group communication device includes:
  • a data scrambling unit that scrambles data information of the message according to a message type and/or a message transmission range by using corresponding scrambling information; wherein the different message types and/or the message sending range correspond to different additions Disturbance information;
  • a data sending unit that transmits the scrambled data information to the second user equipment.
  • a group communication method which is applied to a second user equipment, where the group communication method includes:
  • the data information of the message is obtained in the case of successful descrambling.
  • a group communication device configured in a second user equipment, where the group communication device includes:
  • a data descrambling unit which descrambles the data information of the message by using corresponding descrambling information according to the message type and/or the message sending range; wherein different message types and/or the message sending range correspond to different solutions Disturbance information;
  • a data receiving unit that obtains data information of the message in the case of successful descrambling.
  • a user equipment configured with the group communication apparatus as described in the second aspect above.
  • a user equipment configured with the group communication apparatus according to the fourth aspect above.
  • a communication system comprising:
  • a first user equipment which uses the corresponding scrambling information to scramble the data information of the message according to the message type and/or the message sending range; wherein the different message types and/or the message sending range correspond to different adding Disturbing information; and transmitting scrambled data information.
  • a second user equipment which uses the corresponding descrambling information to descramble the data information of the message according to the message type and/or the message sending range; wherein different message types and/or the message sending range correspond to different solutions Disturbing information; and obtaining data information of the message in the case of successful descrambling.
  • An advantageous effect of the embodiments of the present invention is that the data information is scrambled by using scrambling information that is different according to different message types and/or message transmission ranges.
  • members of the group or external devices can selectively receive messages of different types or different target ranges; not only can the message be correctly received by the corresponding recipient, but also the security of the internal message can be improved.
  • FIG. 1 is a schematic diagram of a scenario of an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a group communication method according to Embodiment 1 of the present invention.
  • FIG. 3 is another schematic diagram of a group communication method according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic diagram of a vehicle fleet message type according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic diagram of vehicle fleet message transmission according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic diagram of a group communication method according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic diagram of a group communication method according to Embodiment 3 of the present invention.
  • FIG. 8 is another schematic diagram of a group communication method according to Embodiment 3 of the present invention.
  • FIG. 9 is a schematic diagram of a group communication method according to Embodiment 4 of the present invention.
  • FIG. 10 is a schematic diagram of a group communication apparatus according to Embodiment 5 of the present invention.
  • FIG. 11 is another schematic diagram of a group communication apparatus according to Embodiment 5 of the present invention.
  • FIG. 12 is a schematic diagram of a group communication apparatus according to Embodiment 6 of the present invention.
  • FIG. 13 is another schematic diagram of a group communication apparatus according to Embodiment 6 of the present invention.
  • Figure 14 is a schematic diagram of a communication system according to Embodiment 7 of the present invention.
  • Figure 15 is a schematic diagram of a user equipment according to Embodiment 7 of the present invention.
  • a base station may be referred to as an access point, a broadcast transmitter, a Node B, an evolved Node B (eNB), etc., and may include some or all of their functions.
  • the term “base station” will be used herein. Each base station provides communication coverage for a particular geographic area.
  • the term “cell” can refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • a mobile station or device may be referred to as a "User Equipment” (UE).
  • UE User Equipment
  • a UE may be fixed or mobile and may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, and the like.
  • the UE may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, and the like.
  • PDA personal digital assistant
  • a group may also be referred to as a queue, which may be a vehicle queue in a V2X scenario, or a collection of devices in other scenarios.
  • the group communication of the embodiment of the present invention is schematically illustrated by taking the vehicle queue as an example.
  • FIG. 1 is a schematic diagram of a scenario according to an embodiment of the present invention.
  • a plurality of vehicles which can be regarded as user equipments
  • each vehicle can also be within the coverage of the base station, and the base station can communicate with each user equipment.
  • the present invention It can also be applied to the case where each user equipment is not within the coverage of the base station, or is applicable to the case where some user equipments are within the coverage of the base station.
  • group management or control functions may be centralized in a certain device, for example, members of the group may be divided into a main user device (for example, a head car in a V2X scenario) and a secondary user device (for example, a V2X scene). Other vehicles in the middle team); in addition, group management or control functions can be distributed to multiple or all internal members of the group.
  • the present invention is not limited to this, and the specific implementation manner of the group may be determined according to actual needs.
  • FIG. 2 is a schematic diagram of a group communication method according to an embodiment of the present invention. As shown in FIG. 2, the group communication method includes:
  • Step 201 The first user equipment uses the corresponding scrambling information to scramble the data information of the message according to the message type and/or the message sending range; wherein different message types and/or message sending ranges correspond to different scrambling information;
  • Step 202 The first user equipment sends the scrambled data information to the second user equipment.
  • the first user equipment is a sending end of the message
  • the second user equipment is a receiving end of the message.
  • the first user equipment and the second user equipment may be members of the same group, and the message is a group internal message; the first user equipment and the second user equipment may not be members of the same group, and the message is a non-group Group internal messages (such as group external messages).
  • the non-group internal message may be a group external message sent only to an external member of the group, or may be a message sent to an internal member of the group and an external member of the group (for example, may be referred to as a general message), or may be The message is sent to the internal members of the group but does not limit the messages received by the members outside the group; the invention is not limited thereto.
  • the message may be a group internal message or a non-group internal message (for example, a group external message), and the data information of the message may be sent through a data channel.
  • the message may also be a group discovery message, and the data information of the group discovery message may be sent through a discovery channel, such as a Physical Sidelink Discovery Channel (PSDCH).
  • PSDCH Physical Sidelink Discovery Channel
  • the message type (and/or message transmission range) has a corresponding relationship with the scrambling information. It may be a one-to-one correspondence, for example, an internal message corresponding scrambling sequence 1, an external message corresponding scrambling sequence 2, a general message corresponding scrambling sequence 3, etc.; or a many-to-one relationship, such as an internal message corresponding scrambling sequence 1, Both the external message and the general message correspond to the scrambling sequence 2 and the like; and may also be a one-to-many relationship, for example, the internal message corresponds to the scrambling sequence 1 and the scrambling sequence 2, the external message corresponds to the scrambling sequence 3, and the like.
  • the present invention is not limited thereto, and only needs to have different message types and/or the message transmission range corresponds to different scrambling information; in addition, the correspondence between the message type (and/or message transmission range) and the scrambling information It can be defined in advance or dynamically adjusted, and only the sender and receiver of the message need to agree.
  • the group communication method may include:
  • Step 301 The first user equipment indicates, by using the control information, a message type and/or a message sending range to the second user equipment.
  • Step 302 The first user equipment uses the corresponding scrambling information to scramble the data information of the message according to the message type and/or the message sending range; wherein different message types and/or message sending ranges correspond to different scrambling information;
  • Step 303 The first user equipment sends the scrambled data information to the second user equipment.
  • control information may be sent through the control channel (ie, the control information is SCI), or may be through a synchronization signal and/or a broadcast channel (eg, Physical Sidelink Broadcast Channel (PSBCH)). ) was sent.
  • the data information may be sent through a data channel (eg, Physical Sidelink Shared Channel (PSSCH)) (eg, dynamically scheduling time-frequency resources, or occupying periodic/semi-periodic fixed time-frequency resources).
  • a data channel eg, Physical Sidelink Shared Channel (PSSCH)
  • a specific transmission method can be selected according to actual conditions.
  • the following describes an example of a message type and/or a message transmission range of an SCI indication message passing through a control channel in a V2X scenario.
  • a header can send internal messages (including internal unicast messages and internal broadcast messages) to internal members of the fleet, and can also External members of the fleet send external messages, and can also send other messages to both internal and external members.
  • control information may include one or more of the following information: indication information indicating the type of the message, identification information of the group, and identification information of the user equipment.
  • indication information indicating the type of the message
  • identification information of the group e.g., identification information of the group
  • identification information of the user equipment e.g., identification information of the user equipment.
  • the SCI can indicate different message types and/or message delivery ranges, such as indicating whether the message is a fleet internal message and/or a fleet discovery message.
  • Table 1 is an example of the manner in which the SCI message type is indicated.
  • 1 bit can be used in the SCI to indicate whether the message is an internal message or an external message (such as a fleet discovery message), using several bits to indicate the own fleet ID or internal vehicle ID. For example, when the message is an internal broadcast message, the SCI indicates an internal message and includes its own fleet ID; when the message is an internal unicast message, the SCI indicates an internal message and includes an internal vehicle ID; when the message is a fleet When the message is found, the SCI indicates that the team has found the message and includes its own fleet ID.
  • Table 1 only schematically shows an example of the control information, but the present invention is not limited thereto.
  • the identifier 1 may be used to indicate the internal broadcast message
  • the identifier 2 is used to indicate the internal unicast message
  • the identifier is used. 3 to instruct the team to find the news, and so on.
  • the specific form of the control information can be determined according to the actual situation.
  • the above description is only made by sending a message to the first car.
  • the message can also be sent similarly; for example, sending internal messages between members of the group, or other members in the group to the group. Send external messages externally.
  • the fleet discovery message may use the synchronization signal and/or broadcast information (for example, MIB-SL, carried on the physical side link broadcast channel) without using the SCI indication. (PSBCH, Physical Sidelink Broadcast Channel)) indication.
  • MIB-SL Physical Sidelink Broadcast Channel
  • the control information may not be sent for indication.
  • the specific method may refer to the group discovery and opt-in process in Embodiment 2.
  • the transmitting end may select the corresponding scrambling information (such as a scrambling sequence or a scrambling ID, etc.) to scramble the data information according to the message type and/or the message sending range.
  • the above concept or content regarding a signal or a channel is not limited to content in a Long Term Evolution (LTE) system or an LTE-A system, and may be, for example, an enhanced signal or channel.
  • the data information of the message may be scrambled using a group specific sequence.
  • the group specific sequence may be generated by the user equipment and reported to the base station; or The reporting information for the user equipment is generated or pre-configured for the group; and the group-specific sequence can be notified to the internal members of the group by the base station.
  • the group specific sequence may be updated periodically, or when a certain user equipment joins the group, or when a certain user equipment leaves the group.
  • the data information can be scrambled using a fleet-specific scrambling sequence that is known in advance to the vehicle within the fleet.
  • the fleet-specific scrambling sequence may be generated by the Header and reported to the base station, or the base station may assign the fleet-specific scrambling sequence to each group member.
  • the fleet-specific scrambling sequence can be updated periodically or when a vehicle leaves the fleet.
  • the base station informs the vehicle of the current fleet-specific scrambling sequence when the new vehicle joins the fleet.
  • the data information may be scrambled using the identification information included in the control information, or a scrambling sequence generated according to the identification information may be used. The data information is scrambled.
  • the data information may be scrambled using an ID included in the SCI or a sequence generated based on the ID.
  • the data information may be scrambled using a predetermined scrambling sequence; or, in the control information In the case where the identification information is not included, the data information may also be scrambled using a predetermined scrambling sequence.
  • the predetermined scrambling sequence may be a sequence specified in the standard, and may also be known by each user equipment, and may be agreed in advance at the transmitting end and the receiving end of the message.
  • FIG. 5 is a schematic diagram of fleet message transmission according to an embodiment of the present invention.
  • the data information when transmitting a fleet internal message, the data information may be scrambled by using a fleet-specific scrambling sequence.
  • the data information When transmitting a fleet discovery message or other message, the data information may be scrambled using an ID included in the SCI or a sequence generated based on the ID.
  • the vehicle can determine the message type and/or transmission range of the message based on the information contained in the SCI (eg, whether it is a fleet internal message or a fleet outside message, or whether it is a fleet discovery message).
  • the internal vehicle may utilize the fleet specific descrambling sequence (eg, the same as the fleet specific scrambling sequence) to receive the data information. Further, when the message is an internal unicast message, only the vehicle indicated by the ID included in the SCI needs to receive the data information. For an external vehicle, since the fleet-specific descrambling sequence cannot be known, the data information cannot be descrambled, and thus the subsequent data information is not received.
  • the fleet specific descrambling sequence eg, the same as the fleet specific scrambling sequence
  • the Any vehicle may descramble the data information according to information contained in the SCI (for example, its own fleet ID), and may select whether to receive the data according to information included in the SCI (eg, target recipient ID/target receiving group ID, message type, etc.). Message.
  • information contained in the SCI for example, its own fleet ID
  • information included in the SCI eg, target recipient ID/target receiving group ID, message type, etc.
  • the vehicle may default to the message as a non-internal message and attempt to receive the message; and the in-flight vehicle may attempt to further receive the message using the fleet-specific descrambling sequence.
  • the data information is scrambled using scrambled information that varies with different message types and/or message transmission ranges.
  • the group member or the external device can selectively receive messages of different types or different target ranges; not only can the message be correctly received by the corresponding recipient, but also the security of the internal message can be improved.
  • the embodiment of the present invention further describes the case of the group discovery message on the basis of the embodiment 1.
  • the same content as that of the embodiment 1 will not be described again.
  • the first user equipment and the second user equipment are not members of the same group, that is, the second user equipment is an out-of-group user equipment of the group in which the first user equipment is located.
  • FIG. 6 is a schematic diagram of a group communication method according to an embodiment of the present invention. As shown in FIG. 6, the group communication method includes:
  • Step 601 The first user equipment indicates, by using the control information, that the message is a group discovery message to the second user equipment.
  • Step 602 The first user equipment performs scrambling on the data information of the group discovery message by using corresponding scrambling information.
  • different message types and/or message sending ranges correspond to different scrambling information; wherein the scrambling information of the group discovery message may be an ID included in the control information, or according to the ID The generated scrambling sequence.
  • Step 603 The first user equipment sends the scrambled data information to the second user equipment.
  • control information may be transmitted through the control channel or may be transmitted through a synchronization signal and/or a broadcast channel; the data information may be transmitted through the data channel.
  • data information can also be transmitted over the discovery channel, at which point step 601 can be omitted and the scrambling information can be a predetermined scrambling sequence.
  • the present invention is not limited to this, and a specific transmission method can be selected according to actual conditions.
  • the Header may transmit the synchronization signal using a synchronization sequence of a specific packet, and the synchronization signal sequence may be mapped one-to-one with the fleet ID, and indicate the data information of the fleet discovery message in the broadcast information (eg, MIB-SL, carried in the PSBCH), for example, Cycle, modem mode, dedicated resource location, fleet ID, etc.
  • the broadcast information eg, MIB-SL, carried in the PSBCH
  • the Header may periodically send a group discovery message, and the group discovery message may include one or more of the following information:
  • the maximum number of vehicles or queue length of the vehicle queue is the maximum number of vehicles or queue length of the vehicle queue
  • the vehicle queue allows for the length of the added vehicle and/or the width of the vehicle and/or the height of the vehicle;
  • the above only schematically shows the information of the group discovery message, but the present invention is not limited thereto; for example, other information may also be used.
  • the foregoing information may be explicitly or implicitly included in the data information, or may be explicitly or implicitly included in the control information, wherein the plurality of information may also be combined and indicated; the specific implementation may be determined according to actual conditions. the way.
  • the group communication method may further include:
  • Step 604 The first user equipment receives a request to join the message sent by the second user equipment to join the group.
  • the second user equipment may further receive the data information of the group discovery message. According to the data information, the second user equipment may determine whether to join the group in which the first user equipment is located (hereinafter referred to as the first group), or determine the group in which the second user equipment is located (hereinafter referred to as the second group) Whether to join (or merge to) the first group.
  • the first group the group in which the first user equipment is located
  • the second group the group in which the second user equipment is located
  • the source vehicle or source vehicle queue meets the target vehicle queue for the number of vehicles and/or vehicle size (including Limit of length/width/height).
  • the second user equipment may send a request to join message to the first user equipment if it is determined to join the first group.
  • the timing of the request to join the message may be determined, for example, according to the “reception timing of the request to join message” in the group discovery message; and the first user equipment may reserve the fixed time to receive the request to join the message after the group discovery message is sent. .
  • the request to join message may include one or more of the following information:
  • the type of source vehicle or the type of source vehicle queue is the type of source vehicle or the type of source vehicle queue
  • Vehicle length and/or vehicle width and/or vehicle height of the source vehicle are Vehicle length and/or vehicle width and/or vehicle height of the source vehicle
  • the speed and/or direction of travel of the source vehicle queue are the speed and/or direction of travel of the source vehicle queue.
  • the above merely shows information of the request to join the message, but the present invention is not limited thereto; for example, other information may also be used.
  • the foregoing information may be explicitly or implicitly included in the data information, or may be explicitly or implicitly included in the control information, wherein the plurality of information may also be combined and indicated; the specific implementation may be determined according to actual conditions. the way.
  • the group communication method may further include:
  • Step 605 The first user equipment determines, according to the request to join the message, whether the second user equipment or the second group corresponding to the second user equipment is allowed to join the first group.
  • step 606 is performed if allowed; the process can be ended if not allowed.
  • the first user equipment may periodically broadcast the group discovery message, and the multiple second user equipment may receive the group discovery message.
  • a certain second user equipment can receive a plurality of first users. The group discovery message sent by the device, and then select a suitable first group.
  • the group communication method may further include:
  • Step 606 The first user equipment reports related information to the base station.
  • Step 607 The base station sends an acknowledgement message to the second user equipment.
  • the base station may send an acknowledgement message to the second user equipment, and send the group specific sequence of the first group to the second user equipment.
  • the first user equipment may also send an acknowledgement message allowing the join to the second user equipment.
  • the first user equipment may also send a message to the second user equipment that is not allowed to join.
  • FIG. 6 only schematically shows the steps related to the first user equipment, and the present invention is not limited thereto; reference may be made to FIG. 9 regarding the steps related to the second user equipment.
  • FIG. 6 only schematically illustrates an embodiment of the present invention. For example, the order of execution between the steps may be appropriately adjusted, and other steps may be added or some of the steps may be reduced.
  • the second user equipment may receive the group internal message and accept the management inside the group.
  • the vehicle can receive internal information of the fleet; the Header can further manage and control the vehicle, such as adjusting vehicle speed or vehicle position.
  • the data information is scrambled using scrambled information that varies with different message types and/or message transmission ranges.
  • the group member or the external device can selectively receive messages of different types or different target ranges; not only can the message be correctly received by the corresponding recipient, but also the security of the internal message can be improved.
  • the embodiment of the present invention provides a group communication method, which is described from the receiving end of the message, and the same content as that of Embodiment 1 is not described again.
  • FIG. 7 is a schematic diagram of a group communication method according to an embodiment of the present invention. As shown in FIG. 7, the group communication method includes:
  • Step 701 The second user equipment uses the corresponding descrambling information to descramble the data information of the message according to the message type and/or the message sending range.
  • the different message types and/or the message sending range correspond to different solutions. Disturbing information.
  • Step 702 The second user equipment obtains data information of the message in case of successful descrambling.
  • the first user equipment is a sending end of the message
  • the second user equipment is a receiving end of the message.
  • the first user equipment and the second user equipment may be members of the same group, and the message is a group internal message; the first user equipment and the second user equipment may not be members of the same group, and the message is a non-group Group internal messages (such as group external messages).
  • the message may be a group internal message or a non-group internal message (for example, a group external message), and the data information of the message may be sent through a data channel.
  • the message may also be a group discovery message, and the data information of the group discovery message may be sent through a discovery channel, such as a physical edge link discovery channel (PSDCH).
  • PSDCH physical edge link discovery channel
  • FIG. 8 is another schematic diagram of a group communication method according to an embodiment of the present invention, showing a case where control information of a message is used. As shown in FIG. 8, the group communication method includes:
  • Step 801 The second user equipment receives a message type and/or a message sending range that is sent by the first user equipment by using the control information.
  • Step 802 The second user equipment uses the corresponding descrambling information to descramble the data information of the message according to the message type and/or the message sending range.
  • the different message types and/or the message sending range correspond to different descrambling information.
  • Step 803 The second user equipment obtains data information of the message in case of successful descrambling.
  • control information may be transmitted through a control channel or may be transmitted through a synchronization signal and/or a broadcast channel.
  • the data information can be sent over the data channel or sent over the discovery channel.
  • the present invention is not limited to this, and a specific transmission method can be selected according to actual conditions.
  • the descrambling information may be the same as the scrambling information, or may be different but have a corresponding relationship; only the pre-conformity may be agreed at the transmitting end and the receiving end of the message.
  • the message may be a group internal message; the second user equipment may descramble the data information using a group specific sequence.
  • the group-specific sequence may be configured by the base station in advance for the second user equipment, for example, when the second user equipment joins the group, and sent by the base station to the second user equipment; but the invention is not limited thereto.
  • the message may also be a non-group internal message; the second user equipment may use the identification information included in the control information to descramble the data information, or use the identifier according to the identifier.
  • the descrambling sequence generated by the information descrambles the data information.
  • the second user equipment may use the predetermined descrambling sequence to the data information. De-scrambling is performed; the predetermined descrambling sequence can be pre-agreed by the transmitting end and the receiving end.
  • control information may include one or more of the following information: indication information indicating a message type, identification information of the group, and identification information of the user equipment; but the invention is not limited thereto.
  • the data information is scrambled using scrambled information that varies with different message types and/or message transmission ranges.
  • the group member or the external device can selectively receive messages of different types or different target ranges; not only can the message be correctly received by the corresponding recipient, but also the security of the internal message can be improved.
  • the embodiment of the present invention further describes the case of the group discovery message on the basis of the third embodiment, and the same content as the first to third embodiments will not be described again.
  • the first user equipment and the second user equipment are not members of the same group, that is, the second user equipment is an out-of-group user equipment of the group in which the first user equipment is located.
  • FIG. 9 is a schematic diagram of a group communication method according to an embodiment of the present invention. As shown in FIG. 9, the group communication method includes:
  • Step 901 The first user equipment indicates, by using the control information, that the message is a group discovery message to the second user equipment.
  • Step 902 The second user equipment uses the corresponding descrambling information to descramble the data information of the group discovery message.
  • different message types and/or message sending ranges may correspond to different descrambling information; wherein the descrambling information of the group discovery message may be an ID included in the control information, or according to the ID The generated descrambling sequence.
  • Step 903 The second user equipment obtains data information of the group discovery message in case of successful descrambling.
  • control information may be transmitted through the control channel or may be transmitted through a synchronization signal and/or a broadcast channel; the data information may be transmitted through the data channel.
  • data information can also be transmitted through the discovery channel, at which point step 901 can be omitted and the descrambling information can be a predetermined descrambling sequence.
  • the present invention is not limited to this, and a specific transmission method can be selected according to actual conditions.
  • the group communication method may further include:
  • Step 904 The second user equipment determines, according to the group discovery message, whether the second user equipment or the second group corresponding to the second user equipment can join the corresponding first group.
  • the source vehicle or source vehicle queue meets the target vehicle queue limits for the number of vehicles and/or vehicle size (including length/width/height).
  • the group communication method may further include:
  • Step 905 The second user equipment selects a group to be joined from one or more first groups.
  • the second user equipment may receive a group discovery message, and if it is determined that the second group is able to join, the first group corresponding to the group discovery message is used as the group to be added, and step 905 may be omitted. .
  • the second user equipment may also receive multiple group discovery messages. If it is determined in step 904 that multiple first groups can join, the following vehicle queue may be selected as the group to be joined:
  • Step 906 The second user equipment sends a request join message requesting to join the group to the first user equipment.
  • the second user equipment sends a request to join message to the corresponding user equipment if it is determined to join the group.
  • the timing of the request to join the message may be determined according to the “reception timing of the request to join message” in the group discovery message; and the first user equipment may reserve a fixed time to receive the request to join the message after the group discovery message is sent.
  • the group communication method may further include:
  • Step 907 The second user equipment receives the acknowledgement message sent by the base station.
  • the first user equipment may report related information to the base station, and the base station may send an acknowledgement message to the second user equipment, and the group specific sequence of the first group is used. Send to the second user device.
  • the first user equipment may also send an acknowledgement message allowing the join to the second user equipment.
  • the first user equipment may also send a message to the second user equipment that is not allowed to join.
  • FIG. 9 only schematically shows the steps related to the second user equipment, and the present invention is not limited thereto; reference may be made to FIG. 6 regarding the steps related to the first user equipment.
  • FIG. 9 is only illustrative of an embodiment of the present invention. For example, the order of execution between the various steps may be appropriately adjusted, and other steps may be added or some of the steps may be reduced.
  • the second user equipment may receive the group internal message and accept the management inside the group.
  • the vehicle can receive internal information of the fleet; the Header can further manage and control the vehicle, such as adjusting vehicle speed or vehicle position.
  • the data information is scrambled using scrambled information that varies with different message types and/or message transmission ranges.
  • the group member or the external device can selectively receive messages of different types or different target ranges; not only can the message be correctly received by the corresponding recipient, but also the security of the internal message can be improved.
  • the embodiment of the invention provides a group communication device, which is configured on the first user equipment (the sending end of the message).
  • the embodiments of the present invention correspond to Embodiments 1 and 2, and the same content will not be described again.
  • FIG. 10 is a schematic diagram of a group communication apparatus according to an embodiment of the present invention. As shown in FIG. 10, the group communication apparatus 1000 includes:
  • the data scrambling unit 1001 performs scrambling on the data information of the message by using corresponding scrambling information according to the message type and/or the message sending range; wherein different message types and/or the message sending range correspond to different Scrambling information;
  • the data transmitting unit 1002 transmits the scrambled data information to the second user equipment.
  • the message may be a group internal message or a non-group internal message (for example, a group external message), and the data information of the message may be sent through a data channel.
  • the message may also be a group discovery message, and the data information of the group discovery message may be sent through a discovery channel, such as a physical edge link discovery channel (PSDCH).
  • PSDCH physical edge link discovery channel
  • the group communication device 1000 may further include:
  • the information indicating unit 1003 indicates the message type and/or the message transmission range to the second user equipment by the control information.
  • control information may be transmitted through a control channel, or may also be transmitted through a synchronization signal/or a broadcast channel, and the data information may be transmitted through a data channel or a discovery channel.
  • the message is a group internal message; the data scrambling unit 1001 may scramble the data information using a group specific sequence.
  • the message is a non-group internal message; the data scrambling unit 1001 may use the identification information included in the control information to scramble the data information, or use the identification information according to the identifier information.
  • the generated scrambling sequence scrambles the data information.
  • the data scrambling unit 1001 may further use the predetermined scrambling sequence to the data.
  • the information is scrambled.
  • the predetermined scrambling sequence can be pre-agreed by the transmitting end and the receiving end.
  • the group specific sequence may be generated by the user equipment and reported to the base station; or generated or pre-configured by the base station based on the reporting information of the user equipment; and the group specific sequence may be periodically updated. Or updated when a user device joins the group, or when a user device leaves the group.
  • control information may include one or more of the following information: indication information indicating a message type, identification information of the group, and identification information of the user equipment.
  • indication information indicating a message type
  • identification information of the group identification information of the user equipment.
  • identification information of the user equipment identification information of the user equipment.
  • the invention is not limited thereto.
  • the message may be a group discovery message
  • the second user equipment is an out-of-group user equipment.
  • the group communication apparatus 1100 includes: an information indication unit 1003, a data scrambling unit 1001, and a data transmission unit 1002; as described above.
  • the group communication device 1100 may further include:
  • the request receiving unit 1101 receives the request sent by the second user equipment and joins the corresponding first group. Seek to join the message;
  • the determining unit 1102 determines whether to allow the second user equipment or the second group corresponding to the second user equipment to join the first group according to the request joining message.
  • the group communication device 1100 may further include:
  • the information reporting unit 903 when the joining determining unit 1102 allows the joining, reports the related information to the base station, so that the base station sends the group specific sequence of the first group to the second user equipment.
  • the group discovery message may include one or more of the following information:
  • the maximum number of vehicles or queue length of the vehicle queue is the maximum number of vehicles or queue length of the vehicle queue
  • the vehicle queue allows for the length of the added vehicle and/or the width of the vehicle and/or the height of the vehicle;
  • the above only schematically shows the information of the group discovery message, but the present invention is not limited thereto; for example, other information may also be used.
  • the foregoing information may be explicitly or implicitly included in the data information, or may be explicitly or implicitly included in the control information, wherein the plurality of information may also be combined and indicated; the specific implementation may be determined according to actual conditions. the way.
  • the data information of the request joining message may include one or more of the following information:
  • the type of source vehicle or the type of source vehicle queue is the type of source vehicle or the type of source vehicle queue
  • Vehicle length and/or vehicle width and/or vehicle height of the source vehicle are Vehicle length and/or vehicle width and/or vehicle height of the source vehicle
  • the speed and/or direction of travel of the source vehicle queue are the speed and/or direction of travel of the source vehicle queue.
  • the above merely shows information of the request to join the message, but the present invention is not limited thereto; for example, other information may also be used.
  • the foregoing information may be explicitly or implicitly included in the data information, or may be explicitly or implicitly included in the control information, wherein the plurality of information may also be combined and indicated; the specific implementation may be determined according to actual conditions. the way.
  • the joining determining unit 1102 may adopt one or more of the following conditions when determining whether to allow joining:
  • the source vehicle or source vehicle queue meets the target vehicle queue limits for the number of vehicles and/or vehicle size (including length/width/height).
  • FIG. 10 and FIG. 11 only schematically show some components related to the present invention, but the present invention is not limited thereto, and other components of the group communication device are not shown in FIG. 10 and FIG. Refer to related technologies, and details are not described here.
  • the data information is scrambled using scrambled information that varies with different message types and/or message transmission ranges.
  • the group member or the external device can selectively receive messages of different types or different target ranges; not only can the message be correctly received by the corresponding recipient, but also the security of the internal message can be improved.
  • the embodiment of the invention provides a group communication device, which is configured on a second user equipment (the receiving end of the message).
  • the embodiments of the present invention correspond to the embodiments 3 and 4, and the same content is not described again.
  • FIG. 12 is a schematic diagram of a group communication apparatus according to an embodiment of the present invention. As shown in FIG. 12, the group communication apparatus 1200 includes:
  • the data descrambling unit 1201 descrambles the data information of the message by using corresponding descrambling information according to the message type and/or the message sending range; wherein different message types and/or the message sending range correspond to Different descrambling information.
  • the data receiving unit 1202 obtains the data information of the message in the case of successful descrambling.
  • the group communication device 1200 may further include:
  • the information receiving unit 1203 receives the message type and/or the message sending range sent by the first user equipment by using the control information.
  • the message is a group internal message; the data descrambling unit 1201 may descramble the data information using a group specific sequence.
  • the message is a non-group internal message; the data descrambling unit 1201 may use the identification information included in the control information to descramble the data information, or use the identification information according to the identifier information.
  • the generated descrambling sequence descrambles the data information.
  • the data descrambling unit 1201 may further use the predetermined descrambling sequence to Data information is descrambled.
  • the predetermined descrambling sequence can be pre-agreed by the transmitting end and the receiving end.
  • control information may include one or more of the following information: indication information indicating a message type, identification information of the group, and identification information of the user equipment.
  • indication information indicating a message type
  • identification information of the group identification information of the user equipment.
  • identification information of the user equipment identification information of the user equipment.
  • the invention is not limited thereto.
  • the message may be a group discovery message
  • the second user equipment is an out-of-group user equipment.
  • FIG. 13 is another schematic diagram of a group communication apparatus according to an embodiment of the present invention.
  • the group communication apparatus 1300 includes: an information receiving unit 1203, a data descrambling unit 1201, and a data receiving unit 1202, as described above.
  • the group communication device 1300 may further include:
  • the determining unit 1301 is configured to determine, according to the group discovery message, whether the second group corresponding to the second user equipment or the second user equipment joins the corresponding first group;
  • the request sending unit 1302 sends a request join message requesting to join the first group to the corresponding user equipment.
  • the joining determination unit 1301 may adopt one or more of the following conditions when determining whether to join:
  • the source vehicle or source vehicle queue meets the target vehicle queue limit for the number of vehicles and/or vehicle size system.
  • the group communication device 1300 may further include:
  • the group selection unit 1303 selects a group to be joined from one or more first groups that are determined to be able to join.
  • the group is a vehicle queue
  • the group to be joined may be: a vehicle queue that receives the strongest information intensity, or a vehicle queue with the least number of vehicles in the current vehicle queue, or a vehicle queue with the shortest queue length in the current vehicle queue, or The queue of vehicles that have the highest number of vehicles allowed to access, or the queue of vehicles that have the largest queue length allowed to access.
  • the invention is not limited thereto.
  • FIG. 12 and FIG. 13 only schematically show some components related to the present invention, but the present invention is not limited thereto, for example, other components of the group communication device are not shown in FIGS. 12 and 13.
  • the related art can be referred to, and details are not described herein again.
  • the data information is scrambled using scrambled information that varies with different message types and/or message transmission ranges.
  • the group member or the external device can selectively receive messages of different types or different target ranges; not only can the message be correctly received by the corresponding recipient, but also the security of the internal message can be improved.
  • the embodiment of the present invention further provides a communication system, and the same content as Embodiments 1 to 6 is not described again.
  • FIG. 14 is a schematic diagram of a communication system according to an embodiment of the present invention, which schematically illustrates a case where a transmitting end is a first user equipment and a receiving end is a second user equipment.
  • communication system 1400 can include a first user device 1401 and a second user device 1402.
  • the first user equipment 1401 is configured with the group communication device 1000 or 1100 as described in Embodiment 5
  • the second user equipment 1402 is configured with the group communication device 1200 or 1300 as described in Embodiment 6.
  • the communication system 1400 can also include:
  • Base station 1403 which provides communication services for first user equipment 1401 and/or second user equipment 1402.
  • the embodiment of the invention further provides a user equipment, which may be the first user equipment 1401 or the second user equipment 1402.
  • FIG. 15 is a schematic diagram of a user equipment according to an embodiment of the present invention.
  • the user device 1500 can include a central processing unit 100 and a memory 140; the memory 140 is coupled to the central processing unit 100.
  • the figure be exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the user equipment 1500 can act as a sender of the message.
  • the functions of the group communication device 1000 or 1100 can be integrated into the central processing unit 100.
  • the central processing unit 100 may be configured to implement the group communication method described in Embodiment 1 or 2.
  • the central processing unit 100 can be configured to perform control of scrambling data information of the message with corresponding scrambling information according to the message type and/or the message transmission range; wherein the different message types and/or The message transmission range corresponds to different scrambling information; and the scrambled data information is transmitted.
  • the user equipment 1500 can act as a receiving end of a message.
  • the functions of the group communication device 1200 or 1300 can be integrated into the central processing unit 100.
  • the central processing unit 100 may be configured to implement the group communication method described in Embodiment 3 or 4.
  • the central processing unit 100 can be configured to perform control of descrambling the data information of the message with corresponding descrambling information according to the message type and/or the message transmission range; wherein the different message types and/or The message transmission range corresponds to different descrambling information; and the data information of the message is obtained in the case of successful descrambling.
  • the user equipment 1500 may further include: a communication module 110, an input unit 120, a display 160, and a power source 170.
  • the functions of the above components are similar to those of the prior art, and are not described herein again. It should be noted that the user equipment 1500 does not have to include all the components shown in FIG. 15, and the above components are not required; in addition, the user equipment 1500 may further include components not shown in FIG. There are technologies.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes the group communication device or user equipment to perform the embodiments 1 to 4 when the program is executed in a group communication device or a user equipment The group communication method described.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the group communication device or the user equipment to perform the group communication method described in Embodiments 1 to 4.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the group communication method/device described in connection with the embodiments of the present invention may be directly embodied as hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional block diagrams shown in FIG. 10 and/or one or more combinations of functional block diagrams may correspond to each of the computer program flows.
  • Software modules can also correspond to individual hardware modules. These software modules may correspond to the respective steps shown in FIG. 2, respectively.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • the software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.

Abstract

一种群组通信装置、方法以及通信系统。所述群组通信方法包括：根据消息类型和/或消息发送范围采用对应的加扰信息对消息的数据信息进行加扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的加扰信息；以及发送加扰后的数据信息。由此，群组内部成员或外部设备能够选择性地接收不同类型或者不同目标范围的消息；不仅能够保证消息被相应接收者正确接收，而且可以提高内部消息的安全性。

Description

群组通信装置、方法以及通信系统 技术领域
本发明涉及通信技术领域，特别涉及一种群组通信装置、方法以及通信系统。
背景技术
随着通信技术大范围和全球化的普及，基于通信技术的应用得到越来越广泛的应用。其中智能交通系统成为一个非常热门的应用方向。在第三代合作伙伴计划(3GPP，3rd Generation Partnership Project)近期的研究工作中，车联网(V2X，Vehicle-to-everything)通信作为一项重要研究被立项，成为3GPP当前热点研究内容之一。
在V2X通信中，车辆可以通过消息的控制信息指示消息的数据信息的资源位置、调制解调方式以及目标接收者等；控制信息例如是由物理边链路控制信道(PSCCH，Physical Sidelink Control Channel)承载的边链路控制信息(SCI，Sidelink Control Information)。车辆接收到SCI后即可根据SCI中包含的信息成功接收到数据信息。
在第五代(5G)通信技术的研究中，3GPP针对车辆通信提出了一种典型的自动驾驶场景，即多个车辆可以组成车队，由头车管理和控制整个车队向前行驶，从而缩小车辆间距并节能。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
但是，发明人发现：在上述自动驾驶场景下，车队中的车辆不仅需要与车队内部车辆交互车队的行车路线等内部信息或私密信息，而且需要与车队外部车辆或设备交互车队状态等信息。
即一方面，群组(或者也可称为队列)内部成员或外部设备需要选择性地接收不同目标范围的消息；另一方面，为了避免潜在的安全威胁，群组的内部信息或私密信息应尽量保证只有内部成员才能接收。而现有的设备间直接通信技术仍无法满足上述群组通信的需求。
本发明实施例提供一种群组通信装置、方法以及通信系统。群组内部成员或外部设备能够选择性地接收不同类型或者不同目标范围的消息。
根据本发明实施例的第一个方面，提供一种群组通信方法，应用于第一用户设备，所述群组通信方法包括：
根据消息类型和/或消息发送范围采用对应的加扰信息对消息的数据信息进行加扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的加扰信息；
向第二用户设备发送加扰后的数据信息。
根据本发明实施例的第二个方面，提供一种群组通信装置，配置于第一用户设备，所述群组通信装置包括：
数据加扰单元，其根据消息类型和/或消息发送范围采用对应的加扰信息对消息的数据信息进行加扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的加扰信息；
数据发送单元，其向第二用户设备发送加扰后的数据信息。
根据本发明实施例的第三个方面，提供一种群组通信方法，应用于第二用户设备，所述群组通信方法包括：
根据消息类型和/或消息发送范围采用对应的解扰信息对消息的数据信息进行解扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的解扰信息；
在成功解扰的情况下获得所述消息的数据信息。
根据本发明实施例的第四个方面，提供一种群组通信装置，配置于第二用户设备，所述群组通信装置包括：
数据解扰单元，其根据消息类型和/或消息发送范围采用对应的解扰信息对消息的数据信息进行解扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的解扰信息；
数据接收单元，其在成功解扰的情况下获得所述消息的数据信息。
根据本发明实施例的第五个方面，提供一种用户设备，其配置有如上第二方面所述的群组通信装置。
根据本发明实施例的第六个方面，提供一种用户设备，其配置有如上第四方面所述的群组通信装置。
根据本发明实施例的第七个方面，提供一种通信系统，所述通信系统包括：
第一用户设备，其根据消息类型和/或消息发送范围采用对应的加扰信息对消息的数据信息进行加扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的加扰信息；以及发送加扰后的数据信息。
第二用户设备，其根据消息类型和/或消息发送范围采用对应的解扰信息对消息的数据信息进行解扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的解扰信息；以及在成功解扰的情况下获得所述消息的数据信息。
本发明实施例的有益效果在于：采用随不同消息类型和/或消息发送范围而不同的加扰信息对数据信息进行加扰。由此，群组内部成员或外部设备能够选择性地接收不同类型或者不同目标范围的消息；不仅能够保证消息被相应接收者正确接收，而且可以提高内部消息的安全性。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本发明实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本发明实施例的一场景示意图；
图2是本发明实施例1的群组通信方法的一示意图；
图3是本发明实施例1的群组通信方法的另一示意图；
图4是本发明实施例1的车队消息类型的一示意图；
图5是本发明实施例1的车队消息传输的一示意图；
图6是本发明实施例2的群组通信方法的一示意图；
图7是本发明实施例3的群组通信方法的一示意图；
图8是本发明实施例3的群组通信方法的另一示意图；
图9是本发明实施例4的群组通信方法的一示意图；
图10是本发明实施例5的群组通信装置的一示意图；
图11是本发明实施例5的群组通信装置的另一示意图；
图12是本发明实施例6的群组通信装置的一示意图；
图13是本发明实施例6的群组通信装置的另一示意图；
图14是本发明实施例7的通信系统的一示意图；
图15是本发明实施例7的用户设备的一示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请中，基站可以被称为接入点、广播发射机、节点B、演进节点B(eNB)等，并且可以包括它们的一些或所有功能。在文中将使用术语“基站”。每个基站对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本申请中，移动站或设备可以被称为“用户设备”(UE，User Equipment)。UE可以是固定的或移动的，并且也可以称为移动台、终端、接入终端、用户单元、站等。UE可以是蜂窝电话、个人数字助理(PDA)、无线调制解调器、无线通信设备、手持设备、膝上型计算机、无绳电话等。
在本申请中，群组也可以被称为队列，可以是V2X场景下的车辆队列，也可以是其他场景下的设备的集合。以下仅以车辆队列为例，对本发明实施例的群组通信进行示意性说明。
图1是本发明实施例的一场景示意图，如图1所示，多个车辆(可以看作用户设备)可以组成群组，在群组内部各成员之间可以直接进行通信。此外，各车辆还可以处于基站的覆盖范围之内，基站可以与各用户设备进行通信。值得注意的是，本发明 也可以适用于各用户设备均不处于基站覆盖范围之内的情况，或者适用于部分用户设备处于基站覆盖范围之内的情况。
在某一群组中，群组管理或控制功能可以被集中在某一设备中，例如群组内部成员可以分为主用户设备(例如V2X场景中的头车)和辅用户设备(例如V2X场景中车队的其他车辆)；此外群组管理或控制功能也可以被分布到多个或全部群组内部成员中。本发明不限于此，可以根据实际需要确定群组的具体实现方式。
实施例1
本发明实施例提供一种群组通信方法，从消息的发送端(第一用户设备)进行说明。图2是本发明实施例的群组通信方法的一示意图，如图2所示，所述群组通信方法包括：
步骤201，第一用户设备根据消息类型和/或消息发送范围采用对应的加扰信息对消息的数据信息进行加扰；其中不同的消息类型和/或消息发送范围对应于不同的加扰信息；
步骤202，第一用户设备向第二用户设备发送加扰后的数据信息。
在本实施例中，第一用户设备为消息的发送端，第二用户设备为消息的接收端。其中，第一用户设备和第二用户设备可以是同一群组的成员，该消息为群组内部消息；第一用户设备和第二用户设备也可以不是同一群组的成员，该消息为非群组内部消息(例如群组外部消息)。
其中，非群组内部消息可以是仅发送给群组外部成员的群组外部消息，也可以是发送给群组内部成员以及群组外部成员的消息(例如可以称为通用消息)，还可以是发给群组内部成员但不限制群组外部成员接收的消息；本发明不限于此。
在本实施例中，所述消息可以为群组内部消息或者非群组内部消息(例如群组外部消息)，该消息的数据信息可以通过数据信道被发送。所述消息也可以为群组发现消息，该群组发现消息的数据信息可以通过发现信道被发送，该发现信道例如是物理边链路发现信道(PSDCH，Physical Sidelink Discovery Channel)。
在本实施例中，消息类型(和/或消息发送范围)与加扰信息具有对应关系。可以是一一对应的关系，例如内部消息对应加扰序列1、外部消息对应加扰序列2、通用消息对应加扰序列3等；也可以是多对一的关系，例如内部消息对应加扰序列1、 外部消息和通用消息均对应加扰序列2等；还可以是一对多的关系，例如内部消息对应加扰序列1和加扰序列2、外部消息对应加扰序列3等。
但本发明不限于此，只需要存在不同的消息类型和/或消息发送范围对应于不同的加扰信息即可；此外消息类型(和/或消息发送范围)与加扰信息之间的对应关系可以预先被定义，也可以动态地被调整，只需要消息的发送端和接收端达成一致即可。
图3是本发明实施例的群组通信方法的另一示意图，示出了使用消息的控制信息的情况。如图3所示，所述群组通信方法可以包括：
步骤301，第一用户设备通过控制信息向第二用户设备指示消息类型和/或消息发送范围；
步骤302，第一用户设备根据消息类型和/或消息发送范围采用对应的加扰信息对消息的数据信息进行加扰；其中不同的消息类型和/或消息发送范围对应于不同的加扰信息；
步骤303，第一用户设备向第二用户设备发送加扰后的数据信息。
在本实施例中，该控制信息可以通过控制信道被发送(即该控制信息为SCI)，也可以通过同步信号和/或广播信道(例如物理边链路广播信道(PSBCH，Physical Sidelink Broadcast Channel))被发送。该数据信息可以通过数据信道(例如物理边链路共享信道(PSSCH，Physical Sidelink Shared Channel))被发送(例如动态调度时频资源，或者占用周期性/半周期性固定的时频资源)。本发明不限于此，可以根据实际情况选择具体的发送方式。
以下以V2X场景下通过控制信道的SCI指示消息的消息类型和/或消息发送范围为例进行说明。
图4是本发明实施例的车队消息类型的一示意图，如图4所示，头车(Header)可以向车队内部成员发送内部消息(包括内部单播消息以及内部广播消息)，此外还可以向车队外部成员发送外部消息，也可以向内部成员和外部成员均发送其他消息。
例如，控制信息可以包括如下信息的一项或多项：指示消息类型的指示信息、群组的标识信息和用户设备的标识信息。以SCI为例，SCI可以指示不同消息类型和/或消息发送范围，例如指示该消息是否为车队内部消息和/或车队发现消息。
表1是SCI消息类型指示方式的一个示例。
表1
Figure PCTCN2016090016-appb-000001
如表1所示，可以在SCI中使用1比特来指示该消息是内部消息还是外部消息(例如车队发现消息)，使用若干比特指示自身车队ID或者内部车辆ID。例如，当该消息为内部广播消息时，SCI中指示为内部消息且包含自身车队ID；当该消息为内部单播消息时，SCI中指示为内部消息且包含内部车辆ID；当该消息为车队发现消息时，SCI中指示为车队发现消息且包含自身车队ID。
值得注意的是，表1仅示意性示出了控制信息的一个例子，但本发明不限于此，例如也可以使用标识1来指示内部广播消息，使用标识2来指示内部单播消息，使用标识3来指示车队发现消息，等等。关于控制信息的具体形式，可以根据实际情况确定。
以上仅以头车发送消息为例进行了说明，对于群组内部的其他成员，也可以类似地发送消息；例如在群组内部成员之间发送内部消息，或者群组内部的其他成员向群组外部发送外部消息。
在本实施例中，若车队发现消息采用固定资源周期性传输，则车队发现消息可以不通过SCI指示，而利用同步信号和/或广播信息(例如MIB-SL，承载于物理边链路广播信道(PSBCH，Physical Sidelink Broadcast Channel))指示。
此外，若车队发现消息由发现信道承载，则可不发送控制信息进行指示。具体信号或消息内容可以参考现有技术，而具体方法可参考实施例2中的群组发现及选择加入过程。
在本实施例中，发送端可以根据消息类型和/或消息发送范围，来选择对应的加扰信息(例如加扰序列或者加扰ID等)对数据信息进行加扰。值得注意的是，以上关于信号或信道的概念或内容，并不限于长期演进(LTE，Long Term Evolution)系统或LTE-A系统中的内容，例如还可以是增强后的信号或信道。
在一个实施方式中，若消息为群组内部消息，则可以使用群组特定序列对消息的数据信息进行加扰。该群组特定序列可以由用户设备生成并上报基站；或者由基站基 于用户设备的上报信息为群组生成或预配置；并且，该群组特定序列可以由基站告知群组内部成员。此外，群组特定序列可以周期性地被更新，或者在某一用户设备加入所述群组时被更新，或者在某一用户设备离开所述群组时被更新。
例如，车辆发送某一车队内部消息时，可以采用车队特定加扰序列对数据信息进行加扰，该车队加扰序列为车队内部车辆所预先获知。该车队特定加扰序列可由Header生成后上报基站，或者基站为各个群组成员分配该车队特定加扰序列。并且该车队特定加扰序列可周期性更新，或者在有车辆离开车队时更新。同时，基站在新车辆加入车队时，告知该车辆当前的车队特定加扰序列。
在另一个实施方式中，若消息为非群组内部消息，则可以使用所述控制信息中所包含的标识信息对所述数据信息进行加扰，或者使用根据所述标识信息生成的加扰序列对所述数据信息进行加扰。
例如，车辆发送非车队内部消息时，可以利用SCI中包含的ID或基于该ID生成的序列对数据信息进行加扰。
在另一个实施方式中，若消息为群组发现消息(例如数据信息通过发现信道发送并且不使用控制信息)，可以使用预定加扰序列对所述数据信息进行加扰；或者，在控制信息中不包含标识信息的情况下，也可以使用预定加扰序列对所述数据信息进行加扰。其中，该预定加扰序列可以是标准中规定的序列，同样可以被各用户设备所获知，可以在消息的发送端和接收端预先达成一致。
以下以车辆队列为例，使用SCI进行说明。
图5是本发明实施例的车队消息传输的一示意图，如图5所示，在发送车队内部消息时，可以采用车队特定加扰序列对数据信息进行加扰。在发送车队发现消息或者其他消息时，可以采用SCI中包含的ID或基于该ID生成的序列对数据信息进行加扰。
在接收端，车辆根据SCI包含的信息可判断该消息的消息类型和/或发送范围(例如是车队内部消息还是车队外部消息，或者是否为车队发现消息)。
若该消息为车队内部消息，则内部车辆可以利用车队特定解扰序列(例如与车队特定加扰序列相同)来接收该数据信息。进一步地，当该消息为内部单播消息时，只有SCI中包含的ID所指示的车辆才需要接收该数据信息。而对于外部车辆，由于无法获知该车队特定解扰序列，无法对该数据信息进行解扰，因此不接收后续数据信息。
若该消息为非车队内部消息(例如图5所示的车队发现消息或其他消息)，则所 有车辆均可以根据SCI包含的信息(例如自身车队ID)对该数据信息进行解扰，并可以根据SCI包含的信息(例如目标接收者ID/目标接收组ID、消息类型等)选择是否接收该消息。
特别地，当SCI不进行例如上述方式的信息类型指示时，车辆可默认该消息为非内部消息并尝试接收该消息；而车队内部车辆可尝试进一步利用车队特定解扰序列接收此消息。
由上述实施例可知，采用随不同消息类型和/或消息发送范围而不同的加扰信息对数据信息进行加扰。由此，群组成员或外部设备能够选择性地接收不同类型或者不同目标范围的消息；不仅能够保证消息被相应接收者正确接收，而且可以提高内部消息的安全性。
实施例2
本发明实施例在实施例1的基础上，对群组发现消息的情况进行进一步说明，与实施例1相同的内容不再赘述。在本实施例中，第一用户设备和第二用户设备不是同一群组的成员，即第二用户设备是第一用户设备所在群组的群组外用户设备。
图6是本发明实施例的群组通信方法的一示意图，如图6所示，所述群组通信方法包括：
步骤601，第一用户设备通过控制信息向第二用户设备指示消息为群组发现消息；
步骤602，第一用户设备采用对应的加扰信息对所述群组发现消息的数据信息进行加扰；
在本实施例中，不同的消息类型和/或消息发送范围对应于不同的加扰信息；其中群组发现消息的加扰信息可以为该控制信息中所包含的ID，或者为根据该ID所生成的加扰序列。
步骤603，第一用户设备向第二用户设备发送加扰后的数据信息。
在本实施例中，该控制信息可以通过控制信道被发送，也可以通过同步信号和/或广播信道被发送；该数据信息可以通过数据信道被发送。此外，该数据信息也可以通过发现信道被发送，此时步骤601可以被省略，并且加扰信息可以是预定加扰序列。本发明不限于此，可以根据实际情况选择具体的发送方式。
例如，当采用专用资源周期性发送消息时，也可以通过同步信号和/或广播信息 指示车队发现消息。即，Header可以采用特定分组的同步序列发送同步信号，且该同步信号序列可与车队ID一一映射，在广播信息(例如MIB-SL，承载于PSBCH)中指示车队发现消息的数据信息，例如周期、调制解调方式、专用资源位置、车队ID等。
在本实施例中，以所述群组为车辆队列为例，Header可以周期性地发送群组发现消息，所述群组发现消息可以包括如下信息的一项或多项：
车辆队列的标识；
车辆队列的类型；
车辆队列的最大车辆数或者队列长度；
当前队列的车辆数或者队列长度；
当前队列允许加入的车辆数量或者队列长度；
车辆队列允许加入的车辆长度和/或车辆宽度和/或车辆高度；
车辆队列的行驶速度和/或行驶方向；
车辆队列所在车道；
请求加入消息的接收定时。
值得注意的是，以上仅示意性示出了群组发现消息的信息，但本发明不限于此；例如还可以使用其他的信息。此外，上述信息可以显式或隐式地包含在数据信息中，也可以显式或隐式地包含在控制信息中，其中多个信息也可以合并起来被指示；可以根据实际情况确定具体的实施方式。
如图6所示，所述群组通信方法还可以包括：
步骤604，第一用户设备接收第二用户设备发送的请求加入群组的请求加入消息；
在本实施例中，第二用户设备在接收到第一用户设备发送的控制信息之后，可以进一步接收该群组发现消息的数据信息。根据该数据信息，第二用户设备可以确定是否加入第一用户设备所在的群组(以下称为第一群组)，或者确定第二用户设备所在的群组(以下称为第二群组)是否加入(或合并到)第一群组。
在确定是否允许加入时，可以采用如下条件中的一项或多项：
源车辆或源车辆队列和目标车辆队列的行驶方向是否一致；
源车辆或源车辆队列和目标车辆队列的类型是否匹配；
源车辆或源车辆队列是否符合目标车辆队列对于车辆数量和/或车辆大小(包括 长度/宽度/高度)的限制。
值得注意的是，以上仅示意性示出了是否允许加入的若干判断条件，但本发明不限于此；例如还可以使用其他的判断条件。
在本实施例中，第二用户设备在确定加入第一群组的情况下，可以向第一用户设备发送请求加入消息。关于请求加入消息的发送时机，例如可以根据群组发现消息中的“请求加入消息的接收定时”确定；而第一用户设备在该群组发现消息发送之后，可以预留固定时间接收请求加入消息。
在本实施例中，以所述群组为车辆队列为例，所述请求加入消息可以包括如下信息的一项或多项：
目标车辆队列的标识；
源车辆的标识或者源车辆队列的标识；
源车辆的类型或者源车辆队列的类型；
源车辆队列的车辆数；
源车辆的车辆长度和/或车辆宽度和/或车辆高度；
源车辆队列的队列长度和/或队列宽度和/或队列高度；
源车辆所在车道；
源车辆队列所在车道；
源车辆的行驶速度和/或行驶方向；
源车辆队列的行驶速度和/或行驶方向。
值得注意的是，以上仅示意性示出了请求加入消息的信息，但本发明不限于此；例如还可以使用其他的信息。此外，上述信息可以显式或隐式地包含在数据信息中，也可以显式或隐式地包含在控制信息中，其中多个信息也可以合并起来被指示；可以根据实际情况确定具体的实施方式。
如图6所示，所述群组通信方法还可以包括：
步骤605，第一用户设备根据请求加入消息确定是否允许第二用户设备或者第二用户设备所对应的第二群组加入第一群组；
在本实施例中，如果允许则执行步骤606；如果不允许则可以结束该过程。
在本实施例中，第一用户设备可以周期性广播该群组发现消息，多个第二用户设备可以收到该群组发现消息。另一方面，某个第二用户设备可以接收到多个第一用户 设备发送的群组发现消息，然后选择合适的某个第一群组。
如图6所示，所述群组通信方法还可以包括：
步骤606，第一用户设备向基站上报相关信息。
步骤607，基站向第二用户设备发送确认消息；
在本实施例中，在允许加入第一群组的情况下，基站可以向第二用户设备发送确认消息，并将第一群组的群组特定序列发送给第二用户设备。
在本实施例中，在允许加入第一群组的情况下，第一用户设备也可以向第二用户设备发送允许加入的确认消息。在不允许加入的情况下，第一用户设备还可以向第二用户设备发送不允许加入的消息。
值得注意的是，图6仅示意性示出了与第一用户设备相关的步骤，本发明不限于此；关于与第二用户设备相关的步骤可以参考图9。此外，图6仅示意性地对本发明实施例进行了说明，例如还可以适当地调整各个步骤之间的执行顺序，此外还可以增加其他的一些步骤或者减少其中的某些步骤。
在本实施例中，第二用户设备接收到群组特定序列之后，可以接收群组内部消息并接受群组内部的管理。例如，车辆接收到车队特定加扰序列后，即可接收该车队的内部消息；Header可进一步对该车辆进行管理和控制，例如调整车辆速度或车辆位置等。
由上述实施例可知，采用随不同消息类型和/或消息发送范围而不同的加扰信息对数据信息进行加扰。由此，群组成员或外部设备能够选择性地接收不同类型或者不同目标范围的消息；不仅能够保证消息被相应接收者正确接收，而且可以提高内部消息的安全性。
实施例3
本发明实施例提供一种群组通信方法，从消息的接收端进行说明，与实施例1相同的内容不再赘述。
图7是本发明实施例的群组通信方法的一示意图，如图7所示，所述群组通信方法包括：
步骤701，第二用户设备根据消息类型和/或消息发送范围采用对应的解扰信息对消息的数据信息进行解扰；其中不同的消息类型和/或消息发送范围对应于不同的解 扰信息。
步骤702，第二用户设备在成功解扰的情况下获得消息的数据信息。
在本实施例中，第一用户设备为消息的发送端，第二用户设备为消息的接收端。其中，第一用户设备和第二用户设备可以是同一群组的成员，该消息为群组内部消息；第一用户设备和第二用户设备也可以不是同一群组的成员，该消息为非群组内部消息(例如群组外部消息)。
在本实施例中，所述消息可以为群组内部消息或者非群组内部消息(例如群组外部消息)，该消息的数据信息可以通过数据信道被发送。所述消息也可以为群组发现消息，该群组发现消息的数据信息可以通过发现信道被发送，该发现信道例如是物理边链路发现信道(PSDCH)。
图8是本发明实施例的群组通信方法的另一示意图，示出了使用消息的控制信息的情况。如图8所示，所述群组通信方法包括：
步骤801，第二用户设备接收第一用户设备通过控制信息发送的消息类型和/或消息发送范围；
步骤802，第二用户设备根据消息类型和/或消息发送范围采用对应的解扰信息对消息的数据信息进行解扰；其中不同的消息类型和/或消息发送范围对应于不同的解扰信息。
步骤803，第二用户设备在成功解扰的情况下获得消息的数据信息。
在本实施例中，该控制信息可以通过控制信道被发送，也可以通过同步信号和/或广播信道被发送。该数据信息可以通过数据信道被发送，也可以通过发现信道被发送。本发明不限于此，可以根据实际情况选择具体的发送方式。
在本实施例中，解扰信息可以与加扰信息相同，也可以不同但具有对应关系；只需在消息的发送端和接收端预先达成一致即可。
在一个实施方式中，该消息可以为群组内部消息；第二用户设备可以使用群组特定序列对所述数据信息进行解扰。其中该群组特定序列可以由基站预先为该第二用户设备配置，例如在该第二用户设备加入该群组时由基站发送给该第二用户设备；但本发明不限于此。
在另一个实施方式中，该消息也可以为非群组内部消息；第二用户设备可以使用所述控制信息中所包含的标识信息对所述数据信息进行解扰，或者使用根据所述标识 信息生成的解扰序列对所述数据信息进行解扰。
在另一个实施方式中，在所述消息为群组发现消息的情况下，或者在所述控制信息中不包含标识信息的情况下，第二用户设备可以使用预定解扰序列对所述数据信息进行解扰；该预定解扰序列可以由发送端和接收端预先达成一致。
在本实施例中，所述控制信息可以包括如下信息的一项或多项：指示消息类型的指示信息、群组的标识信息和用户设备的标识信息；但本发明不限于此。
由上述实施例可知，采用随不同消息类型和/或消息发送范围而不同的加扰信息对数据信息进行加扰。由此，群组成员或外部设备能够选择性地接收不同类型或者不同目标范围的消息；不仅能够保证消息被相应接收者正确接收，而且可以提高内部消息的安全性。
实施例4
本发明实施例在实施例3的基础上，对群组发现消息的情况进行进一步说明，与实施例1至3相同的内容不再赘述。在本实施例中，第一用户设备和第二用户设备不是同一群组的成员，即第二用户设备是第一用户设备所在群组的群组外用户设备。
图9是本发明实施例的群组通信方法的一示意图，如图9所示，所述群组通信方法包括：
步骤901，第一用户设备通过控制信息向第二用户设备指示消息为群组发现消息；
步骤902，第二用户设备采用对应的解扰信息对所述群组发现消息的数据信息进行解扰；
在本实施例中，不同的消息类型和/或消息发送范围可以对应于不同的解扰信息；其中群组发现消息的解扰信息可以为该控制信息中所包含的ID，或者为根据该ID所生成的解扰序列。
步骤903，第二用户设备在成功解扰的情况下获得群组发现消息的数据信息。
在本实施例中，该控制信息可以通过控制信道被发送，也可以通过同步信号和/或广播信道被发送；该数据信息可以通过数据信道被发送。此外，该数据信息也可以通过发现信道被发送，此时步骤901可以被省略，并且解扰信息可以是预定解扰序列。本发明不限于此，可以根据实际情况选择具体的发送方式。
如图9所示，所述群组通信方法还可以包括：
步骤904，第二用户设备根据群组发现消息确定所述第二用户设备或者所述第二用户设备所对应的第二群组是否能够加入对应的第一群组；
在本实施例中，以所述群组为车辆队列为例，在确定是否能够加入时可以采用如下条件中的一项或多项：
源车辆或源车辆队列和目标车辆队列的行驶方向是否一致；
源车辆或源车辆队列和目标车辆队列的类型是否匹配；
源车辆或源车辆队列是否符合目标车辆队列对于车辆数量和/或车辆大小(包括长度/宽度/高度)的限制。
值得注意的是，以上仅示意性示出了确定是否加入的若干判断条件，但本发明不限于此；例如还可以使用其他的判断条件。
如图9所示，所述群组通信方法还可以包括：
步骤905，第二用户设备从一个或多个第一群组中选择待加入的群组；
在本实施例中，第二用户设备可以接收到一个群组发现消息，如果确定能够加入，则将该群组发现消息对应的第一群组作为待加入的群组，此时步骤905可以省略。此外，第二用户设备也可以接收到多个群组发现消息，在步骤904中确定有多个第一群组均可以加入的情况下，可以选择如下车辆队列作为待加入的群组：
接收信息强度最大的车辆队列；
或者当前车辆队列中车辆数最少的车辆队列；
或者当前车辆队列中队列长度最短的车辆队列；
或者允许接入的车辆数最多的车辆队列；
或者允许接入的队列长度最大的车辆队列。
值得注意的是，以上仅示意性示出了选择群组的若干判断条件，但本发明不限于此；例如还可以使用其他的判断条件。
步骤906，第二用户设备向第一用户设备发送请求加入群组的请求加入消息。
在本实施例中，第二用户设备在确定加入所述群组的情况下，向对应的用户设备发送请求加入消息。关于请求加入消息的发送时机，可以根据群组发现消息中的“请求加入消息的接收定时”确定；而第一用户设备在该群组发现消息发送之后，可以预留固定时间接收请求加入消息。
如图9所示，所述群组通信方法还可以包括：
步骤907，第二用户设备接收基站发送的确认消息；
在本实施例中，在允许加入第一群组的情况下，第一用户设备可以向基站上报相关信息，基站可以向第二用户设备发送确认消息，并将第一群组的群组特定序列发送给第二用户设备。
在本实施例中，在允许加入第一群组的情况下，第一用户设备也可以向第二用户设备发送允许加入的确认消息。在不允许加入的情况下，第一用户设备还可以向第二用户设备发送不允许加入的消息。
值得注意的是，图9仅示意性示出了与第二用户设备相关的步骤，本发明不限于此；关于与第一用户设备相关的步骤可以参考图6。此外，图9仅示意性地对本发明实施例进行了说明，例如还可以适当地调整各个步骤之间的执行顺序，此外还可以增加其他的一些步骤或者减少其中的某些步骤。
在本实施例中，第二用户设备接收到群组特定序列之后，可以接收群组内部消息并接受群组内部的管理。例如，车辆接收到车队特定加扰序列后，即可接收该车队的内部消息；Header可进一步对该车辆进行管理和控制，例如调整车辆速度或车辆位置等。
由上述实施例可知，采用随不同消息类型和/或消息发送范围而不同的加扰信息对数据信息进行加扰。由此，群组成员或外部设备能够选择性地接收不同类型或者不同目标范围的消息；不仅能够保证消息被相应接收者正确接收，而且可以提高内部消息的安全性。
实施例5
本发明实施例提供一种群组通信装置，配置于第一用户设备(消息的发送端)。本发明实施例对应于实施例1和2，相同的内容不再赘述。
图10是本发明实施例的群组通信装置的一示意图，如图10所示，群组通信装置1000包括：
数据加扰单元1001，其根据消息类型和/或消息发送范围采用对应的加扰信息对消息的数据信息进行加扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的加扰信息；
数据发送单元1002，其向第二用户设备发送加扰后的数据信息。
在本实施例中，所述消息可以为群组内部消息或者非群组内部消息(例如群组外部消息)，该消息的数据信息可以通过数据信道被发送。所述消息也可以为群组发现消息，该群组发现消息的数据信息可以通过发现信道被发送，该发现信道例如是物理边链路发现信道(PSDCH)。
如图10所示，群组通信装置1000还可以包括：
信息指示单元1003，其通过控制信息向第二用户设备指示消息类型和/或消息发送范围。
在本实施例中，所述控制信息可以通过控制信道被发送，或者也可以通过同步信号/或广播信道被发送，所述数据信息可以通过数据信道或者发现信道被发送。
在一个实施方式中，所述消息为群组内部消息；数据加扰单元1001可以使用群组特定序列对所述数据信息进行加扰。
在另一个实施方式中，所述消息为非群组内部消息；数据加扰单元1001可以使用所述控制信息中所包含的标识信息对所述数据信息进行加扰，或者使用根据所述标识信息生成的加扰序列对所述数据信息进行加扰。
在另一个实施方式中，在所述消息为群组发现消息的情况下，或者所述控制信息中不包含标识信息的情况下，数据加扰单元1001还可以使用预定加扰序列对所述数据信息进行加扰。该预定加扰序列可以由发送端和接收端预先达成一致。
在本实施例中，群组特定序列可以由用户设备生成并上报基站；或者由基站基于用户设备的上报信息为群组生成或预配置；并且，所述群组特定序列可以周期性地被更新，或者在某一用户设备加入所述群组时被更新，或者在某一用户设备离开所述群组时被更新。
在本实施例中，所述控制信息可以包括如下信息的一项或多项：指示消息类型的指示信息、群组的标识信息和用户设备的标识信息。但本发明不限于此。
在本实施例中，所述消息可以为群组发现消息，第二用户设备为群组外用户设备。
图11是本发明实施例的群组通信装置的另一示意图，如图11所示，群组通信装置1100包括：信息指示单元1003，数据加扰单元1001和数据发送单元1002；如上所述。
如图11所示，群组通信装置1100还可以包括：
请求接收单元1101，其接收第二用户设备发送的请求加入对应的第一群组的请 求加入消息；
加入确定单元1102，其根据所述请求加入消息确定是否允许第二用户设备或者第二用户设备所对应的第二群组加入第一群组。
如图11所示，群组通信装置1100还可以包括：
信息上报单元903，其在加入确定单元1102允许加入的情况下，向基站上报相关信息，使得基站将第一群组的群组特定序列发送给第二用户设备。
以所述群组为车辆队列为例，群组发现消息可以包括如下信息的一项或多项：
车辆队列的标识；
车辆队列的类型；
车辆队列的最大车辆数或者队列长度；
当前队列的车辆数或者队列长度；
当前队列允许加入的车辆数量或者队列长度；
车辆队列允许加入的车辆长度和/或车辆宽度和/或车辆高度；
车辆队列的行驶速度和/或行驶方向；
车辆队列所在车道；
请求加入消息的接收定时。
值得注意的是，以上仅示意性示出了群组发现消息的信息，但本发明不限于此；例如还可以使用其他的信息。此外，上述信息可以显式或隐式地包含在数据信息中，也可以显式或隐式地包含在控制信息中，其中多个信息也可以合并起来被指示；可以根据实际情况确定具体的实施方式。
以所述群组为车辆队列为例，请求加入消息的数据信息可以包括如下信息的一项或多项：
目标车辆队列的标识；
源车辆的标识或者源车辆队列的标识；
源车辆的类型或者源车辆队列的类型；
源车辆队列的车辆数；
源车辆的车辆长度和/或车辆宽度和/或车辆高度；
源车辆队列的队列长度和/或队列宽度和/或队列高度；
源车辆所在车道；
源车辆队列所在车道；
源车辆的行驶速度和/或行驶方向；
源车辆队列的行驶速度和/或行驶方向。
值得注意的是，以上仅示意性示出了请求加入消息的信息，但本发明不限于此；例如还可以使用其他的信息。此外，上述信息可以显式或隐式地包含在数据信息中，也可以显式或隐式地包含在控制信息中，其中多个信息也可以合并起来被指示；可以根据实际情况确定具体的实施方式。
以所述群组为车辆队列为例，加入确定单元1102在确定是否允许加入时，可以采用如下条件中的一项或多项：
源车辆或源车辆队列和目标车辆队列的行驶方向是否一致；
源车辆或源车辆队列和目标车辆队列的类型是否匹配；
源车辆或源车辆队列是否符合目标车辆队列对于车辆数量和/或车辆大小(包括长度/宽度/高度)的限制。
值得注意的是，以上仅示意性示出了是否允许加入的若干判断条件，但本发明不限于此；例如还可以使用其他的判断条件。此外，图10和图11仅示意性地示出了与本发明相关的部分部件，但本发明不限于此，例如群组通信装置的其他部件在图10和图11中并没有示出，可以参考相关技术，此处不再赘述。
由上述实施例可知，采用随不同消息类型和/或消息发送范围而不同的加扰信息对数据信息进行加扰。由此，群组成员或外部设备能够选择性地接收不同类型或者不同目标范围的消息；不仅能够保证消息被相应接收者正确接收，而且可以提高内部消息的安全性。
实施例6
本发明实施例提供一种群组通信装置，配置于第二用户设备(消息的接收端)。本发明实施例对应于实施例3和4，相同的内容不再赘述。
图12是本发明实施例的群组通信装置的一示意图，如图12所示，群组通信装置1200包括：
数据解扰单元1201，其根据消息类型和/或消息发送范围采用对应的解扰信息对消息的数据信息进行解扰；其中不同的所述消息类型和/或所述消息发送范围对应于 不同的解扰信息。
数据接收单元1202，其在成功解扰的情况下获得消息的数据信息。
如图12所示，群组通信装置1200还可以包括：
信息接收单元1203，其接收第一用户设备通过控制信息发送的消息类型和/或消息发送范围。
在一个实施方式中，所述消息为群组内部消息；数据解扰单元1201可以使用群组特定序列对所述数据信息进行解扰。
在另一个实施方式中，所述消息为非群组内部消息；数据解扰单元1201可以使用所述控制信息中所包含的标识信息对所述数据信息进行解扰，或者使用根据所述标识信息生成的解扰序列对所述数据信息进行解扰。
在另一个实施方式中，在所述消息为群组发现消息的情况下，或者在所述控制信息中不包含标识信息的情况下，数据解扰单元1201还可以使用预定解扰序列对所述数据信息进行解扰。该预定解扰序列可以由发送端和接收端预先达成一致。
在本实施例中，所述控制信息可以包括如下信息的一项或多项：指示消息类型的指示信息、群组的标识信息和用户设备的标识信息。但本发明不限于此。
在本实施例中，所述消息可以为群组发现消息，第二用户设备为群组外用户设备。
图13是本发明实施例的群组通信装置的另一示意图，如图13所示，群组通信装置1300包括：信息接收单元1203、数据解扰单元1201和数据接收单元1202，如上所述。
如图13所示，群组通信装置1300还可以包括：
加入判断单元1301，其根据所述群组发现消息判断所述第二用户设备或者所述第二用户设备所对应的第二群组是否加入对应的第一群组；
请求发送单元1302，其向对应的用户设备发送请求加入所述第一群组的请求加入消息。
以所述群组为车辆队列，加入判断单元1301在确定是否加入时，可以采用如下条件中的一项或多项：
源车辆或源车辆队列和目标车辆队列的行驶方向是否一致；
源车辆或源车辆队列和目标车辆队列的类型是否匹配；
源车辆或源车辆队列是否符合目标车辆队列对于车辆数量和/或车辆大小的限 制。
如图13所示，群组通信装置1300还可以包括：
群组选择单元1303，其从一个或多个确定能够加入的第一群组中选择待加入的群组。
以所述群组为车辆队列，待加入的群组可以为：接收信息强度最大的车辆队列，或者当前车辆队列中车辆数最少的车辆队列，或者当前车辆队列中队列长度最短的车辆队列，或者允许接入的车辆数最多的车辆队列，或者允许接入的队列长度最大的车辆队列。但本发明不限于此。
值得注意的是，图12和图13仅示意性地示出了与本发明相关的部分部件，但本发明不限于此，例如群组通信装置的其他部件在图12和图13中并没有示出，可以参考相关技术，此处不再赘述。
由上述实施例可知，采用随不同消息类型和/或消息发送范围而不同的加扰信息对数据信息进行加扰。由此，群组成员或外部设备能够选择性地接收不同类型或者不同目标范围的消息；不仅能够保证消息被相应接收者正确接收，而且可以提高内部消息的安全性。
实施例7
本发明实施例还提供一种通信系统，与实施例1至6相同的内容不再赘述。
图14是本发明实施例的通信系统的一示意图，示意性说明了发送端为第一用户设备以及接收端为第二用户设备的情况。如图14所示，通信系统1400可以包括第一用户设备1401和第二用户设备1402。
其中，第一用户设备1401配置有如实施例5所述的群组通信装置1000或1100，第二用户设备1402配置有如实施例6所述的群组通信装置1200或1300。
如图14所示，通信系统1400还可以包括：
基站1403，其为第一用户设备1401和/或第二用户设备1402提供通信服务。
本发明实施例还提供一种用户设备，该用户设备可以是第一用户设备1401或者第二用户设备1402。
图15是本发明实施例的用户设备的一示意图。如图15所示，该用户设备1500可以包括中央处理器100和存储器140；存储器140耦合到中央处理器100。值得注 意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
在一个实施方式中，该用户设备1500可以作为消息的发送端。群组通信装置1000或1100的功能可以被集成到中央处理器100中。其中，中央处理器100可以被配置为实现实施例1或者2中所述的群组通信方法。
例如，中央处理器100可以被配置为进行如下的控制：根据消息类型和/或消息发送范围采用对应的加扰信息对消息的数据信息进行加扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的加扰信息；以及发送加扰后的数据信息。
在另一个实施方式中，该用户设备1500可以作为消息的接收端。群组通信装置1200或1300的功能可以被集成到中央处理器100中。其中，中央处理器100可以被配置为实现实施例3或者4中所述的群组通信方法。
例如，中央处理器100可以被配置为进行如下的控制：根据消息类型和/或消息发送范围采用对应的解扰信息对消息的数据信息进行解扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的解扰信息；以及在成功解扰的情况下获得消息的数据信息。
如图15所示，该用户设备1500还可以包括：通信模块110、输入单元120、显示器160、电源170。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，用户设备1500也并不是必须要包括图15中所示的所有部件，上述部件并不是必需的；此外，用户设备1500还可以包括图15中没有示出的部件，可以参考现有技术。
本发明实施例还提供一种计算机可读程序，其中当在群组通信装置或者用户设备中执行所述程序时，所述程序使得所述群组通信装置或者用户设备执行实施例1至4所述的群组通信方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得群组通信装置或者用户设备执行实施例1至4所述的群组通信方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本发明实施例描述的群组通信方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图10中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合(例如，数据加扰单元和数据发送单元等)，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图2所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的精神和原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。

Claims (20)

  1. 一种群组通信装置，配置于第一用户设备，所述群组通信装置包括：
    数据加扰单元，其根据消息类型和/或消息发送范围采用对应的加扰信息对消息的数据信息进行加扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的加扰信息；
    数据发送单元，其向第二用户设备发送加扰后的数据信息。
  2. 根据权利要求1所述的群组通信装置，其中，所述群组通信装置还包括：
    信息指示单元，其通过控制信息向所述第二用户设备指示所述消息类型和/或所述消息发送范围。
  3. 根据权利要求2所述的群组通信装置，其中，所述控制信息通过控制信道被发送，或者通过同步信号和/或广播信道被发送。
  4. 根据权利要求1所述的群组通信装置，其中，所述数据信息通过数据信道或者发现信道被发送。
  5. 根据权利要求1所述的群组通信装置，其中，在所述消息为群组内部消息的情况下，所述数据加扰单元使用群组特定序列对所述数据信息进行加扰。
  6. 根据权利要求2所述的群组通信装置，其中，在所述消息为非群组内部消息的情况下，所述数据加扰单元使用所述控制信息中所包含的标识信息或者根据所述标识信息生成的加扰序列对所述数据信息进行加扰。
  7. 根据权利要求2所述的群组通信装置，其中，在所述消息为群组发现消息的情况下或者在所述控制信息中不包含标识信息的情况下，所述数据加扰单元使用预定加扰序列对所述数据信息进行加扰。
  8. 根据权利要求5所述的群组通信装置，其中，所述群组特定序列由用户设备生成并上报基站；或者由基站基于用户设备的上报信息为群组生成或预配置。
  9. 根据权利要求2所述的群组通信装置，其中，所述控制信息包括如下信息的一项或多项：指示消息类型的指示信息、群组的标识信息和用户设备的标识信息。
  10. 根据权利要求1所述的群组通信装置，其中，所述消息为群组发现消息，所述第二用户设备为群组外用户设备；所述群组通信装置还包括：
    请求接收单元，其接收所述第二用户设备发送的请求加入所述群组发现消息所对 应的第一群组的请求加入消息；
    加入确定单元，其根据所述请求加入消息确定是否允许所述第二用户设备或者所述第二用户设备所对应的第二群组加入所述第一群组。
  11. 根据权利要求10所述的群组通信系统，其中，所述群组通信装置还包括：
    信息上报单元，其在所述加入确定单元允许加入的情况下，向基站上报相关信息，使得所述基站将所述第一群组的群组特定序列发送给所述第二用户设备。
  12. 一种群组通信装置，配置于第二用户设备，所述群组通信装置包括：
    数据解扰单元，其根据消息类型和/或消息发送范围采用对应的解扰信息对第一用户设备发送的消息的数据信息进行解扰；其中不同的所述消息类型和/或所述消息发送范围对应于不同的解扰信息；
    数据接收单元，其在成功解扰的情况下获得所述消息的数据信息。
  13. 根据权利要求12所述的群组通信装置，其中，所述群组通信装置还包括：
    信息接收单元，其接收所述第一用户设备通过控制信息发送的所述消息类型和/或所述消息发送范围。
  14. 根据权利要求12所述的群组通信装置，其中，在所述消息为群组内部消息的情况下，所述数据解扰单元使用群组特定序列对所述数据信息进行解扰。
  15. 根据权利要求13所述的群组通信装置，其中，在所述消息为非群组内部消息的情况下，所述数据解扰单元使用所述控制信息中所包含的标识信息或者根据所述标识信息生成的解扰序列对所述数据信息进行解扰。
  16. 根据权利要求13所述的群组通信装置，其中，在所述消息为群组发现消息的情况下或者在所述控制信息中不包含标识信息的情况下，所述数据解扰单元使用预定解扰序列对所述数据信息进行解扰。
  17. 根据权利要求12所述的群组通信装置，其中，所述消息为群组发现消息，所述第二用户设备为群组外用户设备；所述群组通信装置还包括：
    加入判断单元，其根据所述群组发现消息判断所述第二用户设备或者所述第二用户设备所对应的第二群组是否能够加入所述群组发现消息所对应的第一群组；
    请求发送单元，其向发送所述群组发现消息的用户设备发送请求加入所述第一群组的请求加入消息。
  18. 根据权利要求17所述的群组通信装置，其中，所述群组通信装置还包括：
    群组选择单元，其从能够加入的一个或多个第一群组中选择待加入的群组。
  19. 一种通信系统，所述通信系统包括：
    第一用户设备，其配置有如权利要求1所述的群组通信装置；
    第二用户设备，其配置有如权利要求12所述的群组通信装置。
  20. 根据权利要求19所述的通信系统，其中，所述通信系统还包括：
    基站，其为所述第一用户设备和/或所述第二用户设备提供通信服务。
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