WO2016183748A1 - 一种发现方法及设备 - Google Patents

一种发现方法及设备 Download PDF

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Publication number
WO2016183748A1
WO2016183748A1 PCT/CN2015/079118 CN2015079118W WO2016183748A1 WO 2016183748 A1 WO2016183748 A1 WO 2016183748A1 CN 2015079118 W CN2015079118 W CN 2015079118W WO 2016183748 A1 WO2016183748 A1 WO 2016183748A1
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WO
WIPO (PCT)
Prior art keywords
mcptt
user
discovery
discovery message
message
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PCT/CN2015/079118
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English (en)
French (fr)
Inventor
吴义壮
杨艳梅
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020177034830A priority Critical patent/KR102038880B1/ko
Priority to CN202010010713.1A priority patent/CN111372204B/zh
Priority to EP15892127.0A priority patent/EP3285509B1/en
Priority to CN201580079690.7A priority patent/CN107534847B/zh
Priority to JP2017559547A priority patent/JP6573288B2/ja
Priority to PCT/CN2015/079118 priority patent/WO2016183748A1/zh
Publication of WO2016183748A1 publication Critical patent/WO2016183748A1/zh
Priority to US15/812,859 priority patent/US10516987B2/en
Priority to US16/708,028 priority patent/US10999729B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08User group management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10Push-to-Talk [PTT] or Push-On-Call services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/18Self-organising networks, e.g. ad-hoc networks or sensor networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W92/00Interfaces specially adapted for wireless communication networks
    • H04W92/16Interfaces between hierarchically similar devices
    • H04W92/18Interfaces between hierarchically similar devices between terminal devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/40Connection management for selective distribution or broadcast
    • H04W76/45Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/08Trunked mobile radio systems

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a discovery method and device.
  • the Mission Critical Push To Talk (MCPTT) system can support Direct Mode Operation (DMO) scenarios.
  • DMO Direct Mode Operation
  • TS22.179 defines MCPTT to support one-to-one (one-to-one).
  • Communication or private call two types of DMO scenarios.
  • MCPTT User Equipment
  • the same user can not only belong to multiple communication groups, but also use different MCPTT User Equipment (UE) to obtain MCPTT services, for example, in the MCPTT system shown in FIG.
  • UE User Equipment
  • User1 belongs to communication group 1 and communication group 2, and user1 can obtain MCPTT service using MCPTT UE1, MCPTT UE2, and MCPTT UE3.
  • the communication parties in the DMO scenario need not only know the application layer identifier of the other party, that is, the user ID, but also need to know each other.
  • the layer 2 ID of the currently used MCPTT UE, that is, the device identifier, is used to accurately identify each other, and then communicates by means of Proximity-based Services (Prose).
  • the source user when the source user needs to discover at least one target user, the following discovery method is generally used to discover the other party: the source user sends a discovery message including the layer 2 identifier of the MCPTT UE currently used by the user to the at least one target user. After receiving the discovery message, the target user returns a response message including the layer 2 identifier of the MCPTT UE currently used by the target user. The source user cannot identify the target user according to the response message returned by the target user, and the source user cannot pass the response. The Prose mode communicates with the target user.
  • the embodiment of the present invention provides a method and a device for the discovery that the source user cannot identify the target user according to the response message returned by the target user, and the source user cannot communicate with the target user through the Prose mode.
  • an embodiment of the present invention provides a discovery method, which is applied to a first key task, namely, an MCPTT user equipment UE.
  • the method includes:
  • the discovery message includes: application layer identification information of a discovery target, where the discovery target is at least one target user or at least one communication group of the first user using the first MCPTT UE;
  • the response message includes: a layer 2 identifier of the second MCPTT UE and an application layer identifier of a user using the second MCPTT UE;
  • the second MCPTT UE when the discovery target is the at least one target user, the second MCPTT UE is an MCPTT UE currently used by any one of the at least one target users; and when the discovery target is the at least one In the communication group, the second MCPTT UE is an MCPTT UE currently used by a user in any one of the at least one communication group.
  • the discovery message is an application layer message.
  • the discovery message is included in user plane data of the first MCPTT UE.
  • the discovery message is a control plane signaling message of the first MCPTT UE.
  • the application layer identifier information of the discovery target is encrypted information
  • the discovery message further includes a security parameter, where the security parameter is used to enable the second MCPTT UE to obtain the corresponding security information according to the security parameter, obtain an application layer identifier of the discovery target in the discovery message, and return a response.
  • the sending the discovery message includes: when the target user is in the first communication group and the first user is in the first communication group, the sending the discovery message includes:
  • the implementation of any one of the fourth aspect to the fourth implementation manner of the first aspect when the discovery target is the at least one communication group And sending, by the first user, the second communication group in the at least one communication group, the sending the discovery message includes:
  • the layer 2 identifier of the first MCPTT UE and the application layer identifier of the user using the first MCPTT UE are identical to each other.
  • the embodiment of the present invention provides a discovery method, which is applied to a key task, namely, an MCPTT user equipment UE.
  • the method includes:
  • the discovery message includes an application layer identifier of the first user using the MCPTT UE.
  • the discovery message is included in user plane data of the MCPTT UE.
  • the The current message is the control plane signaling message of the MCPTT UE.
  • the sending the discovery message includes:
  • the application layer identifier of the first user is encrypted, and the discovery message further includes a security parameter, where the security parameter is used to make other MCPTT UEs in the first communication group except the MCPTT UE according to the After the security parameter determines the corresponding security information, the application layer identifier of the first user that uses the MCPTT UE in the discovery message is obtained.
  • the discovery message further includes:
  • the layer 2 identifier of the MCPTT UE is the layer 2 identifier of the MCPTT UE.
  • the embodiment of the present invention provides a key task push-to-talk user equipment MCPTT UE, including:
  • a sending unit configured to send a discovery message, where the discovery message includes: application layer identification information of a discovery target, where the discovery target is at least one target user or at least one communication group of the first user using the first MCPTT UE ;
  • a receiving unit configured to receive a response message sent by the second MCPTT UE, where the response message includes: a layer 2 identifier of the second MCPTT UE and an application layer identifier of a user using the second MCPTT UE;
  • the second MCPTT UE when the discovery target is the at least one target user, the second MCPTT UE is an MCPTT UE currently used by any one of the at least one target users; and when the discovery target is the at least one When the group is communicated, the second MCPTT UE is a user in any one of the at least one communication group The MCPTT UE currently in use.
  • the discovery message is an application layer message.
  • the discovery message is included in user plane data of the MCPTT UE.
  • the discovery message is a control plane signaling message of the MCPTT UE.
  • the application layer identifier information of the discovery target is encrypted information
  • the discovery message further includes a security parameter
  • the security parameter is used to enable the second MCPTT UE to determine the application layer identifier of the target in the discovery message and return a response message after determining the corresponding security information according to the security parameter.
  • the MCPTT UE when the discovery target is the at least one target user, And when the target user and the first user are in the first communication group, the MCPTT UE further includes:
  • An obtaining unit configured to acquire a group layer two address of the first communication group
  • the sending unit is specifically configured to send the discovery message to the group layer two address, so that all users in the first communication group except the first user receive the discovery message.
  • any one of the fourth implementable manners of the third aspect to the third aspect may be implemented, when the discovery target is the at least one communication group And when the first user is in the second communication group of the at least one communication group, the MCPTT UE further includes:
  • An obtaining unit configured to acquire a group layer two address of the second communication group
  • the sending unit is specifically configured to send the discovery message to the group layer two address, so that all users in the second communication group except the first user receive The discovery message.
  • the discovery message further includes:
  • the layer 2 identifier of the MCPTT UE and the application layer identifier of the user using the MCPTT UE are identical to each other.
  • an embodiment of the present invention provides an MCPTT UE, including:
  • An acquiring unit configured to acquire an application layer identifier of a first user that uses the MCPTT UE;
  • a sending unit configured to send a discovery message, where the discovery message includes an application layer identifier of the first user that uses the MCPTT UE.
  • the discovery message is an application layer message.
  • the discovery message is included in user plane data of the MCPTT UE.
  • the discovery message is a control plane signaling message of the MCPTT UE.
  • any one of the third implementable manners of the fourth aspect to the fourth aspect may be implemented,
  • the acquiring unit is further configured to acquire a group layer two address of the first communication group to which the first user belongs;
  • the sending unit is specifically configured to send the discovery message to the group layer two address, so that all users in the first communication group except the first user receive the discovery message.
  • the application layer identifier of the first user is encrypted, where
  • the discovery message further includes a security parameter, the security parameter is used to make other MCPTTs in the first communication group except the MCPTT UE
  • the UE obtains an application layer identifier of the first user that uses the MCPTT UE in the discovery message.
  • the discovery message further includes:
  • the layer 2 identifier of the MCPTT UE is the layer 2 identifier of the MCPTT UE.
  • an embodiment of the present invention provides a key task, namely, a push-to-talk user equipment MCPTT UE, including:
  • a communication unit configured to send a discovery message, where the discovery message includes: application layer identification information of a discovery target, where the discovery target is at least one target user or at least one communication group of the first user using the first MCPTT UE ;
  • the second MCPTT UE And receiving a response message sent by the second MCPTT UE, where the response message includes: a layer 2 identifier of the second MCPTT UE and an application layer identifier of a user using the second MCPTT UE;
  • the second MCPTT UE when the discovery target is the at least one target user, the second MCPTT UE is an MCPTT UE currently used by any one of the at least one target users; and when the discovery target is the at least one In the communication group, the second MCPTT UE is an MCPTT UE currently used by a user in any one of the at least one communication group.
  • the discovery message is an application layer message.
  • the discovery message is included in user plane data of the MCPTT UE.
  • the discovery message is a control plane signaling message of the MCPTT UE.
  • the application layer identifier information of the discovery target is encrypted information
  • the discovery message also contains security parameters
  • the security The parameter is used to enable the second MCPTT UE to determine the corresponding security information according to the security parameter, obtain an application layer identifier of the target found in the discovery message, and return a response message.
  • any one of the fourth implementable manners of the fifth aspect to the fifth aspect may be implemented, when the discovery target is the at least one target user, And when the target user and the first user are in the first communication group, the MCPTT UE further includes:
  • a processor configured to acquire a group layer two address of the first communication group
  • the communication unit is specifically configured to send the discovery message to the group layer two address, so that all users in the first communication group except the first user receive the discovery message.
  • any one of the fourth implementable manners of the fifth aspect to the fifth aspect may be implemented, when the discovery target is the at least one communication group And when the first user is in the second communication group of the at least one communication group, the MCPTT UE further includes:
  • An obtaining unit configured to acquire a group layer two address of the second communication group
  • the communication unit is specifically configured to send the discovery message to the group layer two address, so that all users in the second communication group except the first user receive the discovery message.
  • the discovery message further includes:
  • the layer 2 identifier of the MCPTT UE and the application layer identifier of the user using the MCPTT UE are identical to each other.
  • an embodiment of the present invention provides an MCPTT UE, including:
  • a processor configured to acquire an application layer identifier of a first user that uses the MCPTT UE;
  • a communication unit configured to send a discovery message, where the discovery message includes an application layer identifier of the first user that uses the MCPTT UE.
  • the discovery message is an application layer message.
  • the discovery message is included in user plane data of the MCPTT UE.
  • the discovery message is a control plane signaling message of the MCPTT UE.
  • the processor is further configured to acquire a group layer two address of the first communication group to which the first user belongs;
  • the communication unit is specifically configured to send the discovery message to the group layer two address, so that all users in the first communication group except the first user receive the discovery message.
  • the application layer identifier of the first user is encrypted, where
  • the discovery message further includes a security parameter, where the security parameter is used to obtain the discovery after the other MCPTT UEs other than the MCPTT UE in the first communication group determine corresponding security information according to the security parameter.
  • the application layer identifier of the first user of the MCPTT UE is used in the message.
  • the discovery message further includes:
  • the layer 2 identifier of the MCPTT UE is the layer 2 identifier of the MCPTT UE.
  • the embodiment of the present invention provides a method and a device for discovering.
  • the first MCPTT UE sends a discovery message including the identifier information of the discovery target, and receives the layer 2 of the second MCPTT UE that is sent by the at least one second MCPTT UE. And a response message identifying the application layer identifier of the user using the second MCPTT UE.
  • the application layer identifier of the user is such that the sender can determine not only the layer 2 identifier of the MCPTT UE used by the other party but also the user who uses the MCPTT UE, thereby accurately identifying the other party and performing service communication through the Prose mode to avoid
  • the existing source user cannot identify the target user according to the response message returned by the target user, and the source user cannot communicate with the target user through the Prose mode.
  • FIG. 1 is a schematic diagram of a conventional MCPTT system
  • FIG. 3 is a schematic diagram of a user plane according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a control plane according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of another method for discovering according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of an MCPTT UE 30 according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of an MCPTT UE 30 according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of an MCPTT UE 40 according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of an MCPTT UE 50 according to an embodiment of the present invention.
  • FIG. 9 is a structural diagram of an MCPTT UE 60 according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a discovery method according to an embodiment of the present invention, which is applied to a first task under a Mission Critical Push To Talk (MCPTT) system (such as a public security system or a fire protection system).
  • MCPTT Mission Critical Push To Talk
  • the MCPTT UE is configured to enable the user of the first MCPTT UE to discover some other users or some communication groups around the user, where the first MCPTT UE may be any user equipment under the MCPTT system, which is not limited herein.
  • the method may include:
  • the first MCPTT UE sends a discovery message, where the discovery message includes: application layer identifier information of a discovery target, where the discovery target is at least one target user of the first user using the first MCPTT UE or at least one Communication group.
  • the discovery target may determine some target users or some communication groups that are discovered by the first user using the first MCPTT UE, and the target user may be any user that uses the MCPTT UE to obtain the MCPTT service, and may use the first MCPTT UE.
  • the first user is in the same communication group, and may be in a different communication group from the first user using the first MCPTT UE, and is not limited herein; the application layer identification information of the target user is used to identify the target user, which may be An external identifier defined by the 3rd generation partnership project (English: 3rd generation partnership project, abbreviation: 3GPP), such as: Mobile Subscriber International ISDN/PSTN number (abbreviation: MSISDN), ISDN for integrated services
  • the digital network is an abbreviation of integrated service digital network.
  • the PSTN is a public switched telephone network. It is an abbreviation of the public switched telephone network. It can also be a Session Initiation Protocol (Uniform Resource Identity, SIP URI).
  • the communication group may be any communication group in the MCPTT system, and the application layer identification information of the communication group may be a group identifier of the communication group, which may be an application layer group identifier, and used to identify the communication group in the MCPTT system.
  • the group name in the middle for example, a fire department contains three communication groups: communication group 1, communication group 2, and communication group 3, wherein the group identification of the communication group 1 is an emergency group, and the communication group 2
  • the group ID is the lead group, and the group ID of the communication group 3 is the service group.
  • different MCPTT UEs can communicate directly in a one-to-many manner using a connectionless state, establish a user plane channel for service communication, and can also transmit messages through a control plane channel, where
  • the user plane includes six layers from top to bottom (direction indicated by the arrow in FIG. 3) as shown in FIG. 3: Application, Internet Protocol Address (IP) Address Resolution Protocol (ARP) Layer, Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) layer, Media Access Control (MAC), Physical Layer (Physical, PHY), application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • IP Internet Protocol Address
  • ARP Address Resolution Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • Physical Layer Physical Layer
  • application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • the control layer message or data of the application layer is included as a payload in the data packet for the bottom layer.
  • the message is sent to the bottom layer, and then processed by the bottom layer (such as encapsulation and forwarding), and then sent to the bottom layer of the peer device, and then processed by the bottom layer of the peer device (such as receiving and unpacking).
  • the control plane as shown in FIG. 4 from top to bottom (in the direction indicated by the arrow in FIG. 4) may include three layers: Proximity-based Services Protocol (Prose Protocol).
  • the discovery message in step 101 can also be used as an application layer message, including user plane data.
  • the middle transmission can also be sent as a control plane signaling message.
  • the sending, by the first MCPTT UE, the discovery message may specifically include:
  • the application layer entity of the first MCPTT UE determines to send a discovery message, and sends a discovery message to the bottom entity of the first MCPTT UE;
  • the underlying entity of the first MCPTT UE sends the discovery message in the user plane data for transmission.
  • the discovery message is used to request to discover some other users around the user or some of the other communication groups, and the first user using the first MCPTT UE may trigger the sending by using a trigger button on the first MCPTT UE application layer entity.
  • the discovery message may be triggered by the first user to trigger the first MCPTT UE to send the discovery message, which is not limited by the disclosure.
  • the sending, by the first MCPTT UE, the discovery message may specifically include:
  • the Prose Protocol layer entity of the first MCPTT UE determines to send a discovery message, and sends the discovery message as a control plane signaling message.
  • the discovery message is used to request to discover some other users around the user or some of the other communication groups, and may be triggered by the first user using the first MCPTT UE by using a trigger button on the Prose Protocol layer entity of the first MCPTT UE.
  • the first MCPTT UE may be triggered by the first user to send the discovery message, which is not limited by the present invention.
  • the first MCPTT UE may send a discovery message by means of a broadcast, so that any discovery target in the MCPTT system can receive the discovery message, and/or can obtain the group of the communication group.
  • a Layer 2 address where the group 2 address is used as a destination address to send a discovery message, so that all users except the first user in the communication group can receive a discovery message, where the first MCPTT UE
  • the implementation manner of sending the discovery message by using the group 2 address as the destination address is as follows:
  • the sending the discovery message may specifically include:
  • the sending the discovery message may specifically include:
  • the discovery message may further include: a layer 2 identifier of the first MCPTT UE, an application layer identifier of a user using the first MCPTT UE, and a first MCPTT UE
  • the layer 2 identifier may be identified by a medium access control layer, such as a media access control layer (MAC).
  • MAC media access control layer
  • the first MCPTT UE receives the response message sent by the second MCPTT UE, where the response message includes: a layer 2 identifier of the second MCPTT UE and an application layer identifier of a user using the second MCPTT UE.
  • the second MCPTT UE when the discovery target is the at least one target user, the second MCPTT UE is an MCPTT UE currently used by any one of the at least one target users; and when the discovery target is the at least one In the communication group, the second MCPTT UE is an MCPTT UE currently used by a user in any one of the at least one communication group.
  • the first MCPTT UE may receive a response message sent by the at least one second MCPTT UE in a one-to-one manner; and may further receive the at least one second MCPTT UE by using one A response message sent in one-to-many mode.
  • the application layer identification information of the discovery target may be encrypted information
  • the discovery message may further include a security parameter, where the security parameter is used for After the second MCPTT UE determines the corresponding security information according to the security parameter, the application layer identifier of the target is found in the discovery message, and the response message is returned.
  • the security parameter may be a key identifier.
  • the method may further include:
  • the first MCPTT UE acquires an application layer identifier of the first user using the first MCPTT UE.
  • the application layer identifier of the first user that uses the first MCPTT UE by the first MCPTT UE may be: the application layer entity of the first MCPTT UE, when the discovery message is an application layer message, and is included in the user plane data. From the first The application layer identifier of the first user that uses the first MCPTT UE is obtained in the MCPTT UE database, where the database pre-stores the correspondence between the user using the first MCPTT UE and the application layer identifier of the user.
  • the first MCPTT UE obtains the application layer identifier of the first user that uses the first MCPTT UE, and may be: the Prose Protocol layer entity of the first MCPTT UE from the first MCPTT.
  • the application layer entity of the UE acquires an application layer identifier of the first user using the first MCPTT UE, and the application layer entity of the first MCPTT UE acquires the first using the first MCPTT UE from the first MCPTT UE database.
  • An application layer identifier of the user where the database pre-stores a correspondence between the user using the first MCPTT UE and the application layer identifier of the user.
  • the embodiment of the present invention provides a discovery method, where the first MCPTT UE sends a discovery message including the identification information of the discovery target, and receives the layer 2 identifier that is sent by the at least one second MCPTT UE and includes the second MCPTT UE.
  • a response message of an application layer identifier of a user of the second MCPTT UE is used.
  • the response message includes the layer 2 identifier of the MCPTT UE and the application layer identifier of the user using the MCPTT UE, so that the sender can determine not only the layer 2 identifier of the MCPTT UE used by the other party but also the user who uses the MCPTT UE.
  • the other party can accurately identify the other party and communicate with the target user through the Prose mode. problem.
  • FIG. 5 is a flowchart of another discovery method provided by an embodiment of the present invention, which is applied to a MCPTT under a Mission Critical Push To Talk (MCPTT) system (such as a public security system or a fire protection system).
  • MCPTT Mission Critical Push To Talk
  • the UE is used to enable some users or some communication groups to discover the user who uses the MCPTT UE, where the MCPTT UE may be any user equipment in the MCPTT system, which is not limited herein, as shown in FIG. 2, Methods can include:
  • the MCPTT UE acquires an application of the first user that uses the MCPTT UE. Layer identification.
  • the user's application layer identifier is used to identify the user, and may be an external identifier defined by the 3rd generation partnership project (English: 3rd generation partnership project, abbreviation: 3GPP), such as: mobile subscriber number (English: Mobile Subscriber International ISDN/PSTN number, abbreviation: MSISDN), ISDN is an integrated service digital network, short for integrated service digital network, PSTN is public switched telephone network, short for public switched telephone network; can also be unified for session initiation protocol Resource Initiation Protocol (Uniform resource Identity, SIP URI).
  • 3rd generation partnership project International 3rd generation partnership project, abbreviation: 3GPP
  • MSISDN Mobile Subscriber International ISDN/PSTN number
  • ISDN is an integrated service digital network, short for integrated service digital network
  • PSTN is public switched telephone network, short for public switched telephone network
  • SIP URI Uniform resource Identity
  • the MCPTT UE sends a discovery message, where the discovery message includes: an application layer identifier that includes the first user that uses the MCPTT UE.
  • the MCPTT system different MCPTT UEs can communicate directly in a one-to-many manner using a connectionless state, establish a user plane channel for service communication, and can also transmit messages to each other through the control plane.
  • the user plane includes six layers from top to bottom (direction indicated by the arrow in FIG. 3) as shown in FIG. 3: Application, Internet Protocol Address (IP) Address Resolution Protocol (ARP) Layer, Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) layer, Media Access Control (MAC), Physical Layer (Physical, PHY), application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • IP Internet Protocol Address
  • ARP Address Resolution Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • Physical Layer Physical Layer
  • application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • the control layer message or data of the application layer is included as a payload in the data packet for the bottom layer.
  • the message is sent to the bottom layer, and the bottom layer performs corresponding processing (such as encapsulation and forwarding), and then sends it to the bottom layer of the peer device, and then The bottom layer of the end device performs corresponding processing (such as receiving and unpacking) and then transmits the message to the application layer;
  • the control plane as shown in FIG. 4 from top to bottom may include three layers: close range The Proximity-based Services Protocol (Prose Protocol) layer, the Media Access Control (MAC) layer, and the physical layer (PHY).
  • Proximity-based Services Protocol Proximity-based Services Protocol
  • MAC Media Access Control
  • PHY physical layer
  • the inter-body can be directly transmitted by the control signaling, for example, the control signaling is directly transmitted between the Prose Protocol layer of the MCPTT UE1 and the Prose Protocol layer of the MCPTT UE2; therefore, in the embodiment of the present invention, the discovery message in step 201 can be used as
  • the application layer message which is sent in the user plane data, can also be sent as a control plane signaling message.
  • the sending, by the MCPTT UE, the discovery message may specifically include:
  • the application layer entity of the MCPTT UE determines to send a discovery message, and sends a discovery message to the bottom entity of the MCPTT UE;
  • the underlying entity of the MCPTT UE sends the discovery message in the user plane data for transmission.
  • the discovery message is used to request some users in the vicinity of the user of the MCPTT UE or some users in other communication groups to discover the user, and may be used by the first user using the MCPTT UE through the MCPTT UE application layer entity.
  • the triggering button triggers the sending of the discovery message, and the first user may trigger the MCPTT UE to send the discovery message in other manners, which is not limited by the present invention.
  • the sending, by the MCPTT UE, the discovery message may specifically include:
  • the Prose Protocol layer entity of the MCPTT UE determines the discovery message and sends the discovery message as a control plane signaling message.
  • the discovery request message is used to request some users in the vicinity of the user of the MCPTT UE or some users in other communication groups to discover the user, and may pass the Prospence protocol of the MCPTT UE by the first user using the MCPTT UE.
  • the triggering button on the layer entity triggers the sending of the discovery message, and the first user may trigger the MCPTT UE to send the discovery message in other manners, which is not limited by the present invention.
  • the discovery message may further include: a layer 2 identifier of the MCPTT UE, where the layer 2 identifier of the MCPTT UE is a medium access control layer identifier, such as a media access control layer (Media Access Control, MAC) address.
  • a layer 2 identifier of the MCPTT UE is a medium access control layer identifier, such as a media access control layer (Media Access Control, MAC) address.
  • Media Access Control, MAC Media Access Control
  • the MCPTT UE may send the discovery message by means of a broadcast, so that all users except the first user in the MCPTT system can receive the discovery message, and/or can also Obtaining a group layer two address corresponding to the communication group to which the first user belongs; using the group layer two address as a target address, sending the discovery message to the target address, so that the group is other than the first user All users can receive the discovery message, where the group layer two address is used as the target address, and the discovery message is sent to the target address as follows:
  • the group 2 address of the first communication group may be a media access control layer identifier of the first communication group, such as a MAC address.
  • the application layer identifier of the first user is encrypted, and the discovery message further includes a security parameter, where the security parameter is used to enable the After the other MCPTT UEs in the first communication group determine the corresponding security information according to the security parameter, the application layer identifier of the first user using the MCPTT UE in the discovery message is obtained.
  • the MCPTT UE when the discovery message is transmitted by using the user plane data, the MCPTT UE obtains the application layer identifier of the first user that uses the MCPTT UE, and may be: an application layer entity of the MCPTT UE from the MCPTT.
  • the application layer identifier of the first user that uses the MCPTT UE is obtained in the UE database, where the database pre-stores the correspondence between the user using the MCPTT UE and the application layer identifier of the user.
  • the MCPTT UE obtains the application layer identifier of the first user that uses the MCPTT UE, and may be: the Pros Protocol layer entity of the MCPTT UE obtains the usage from the application layer entity of the MCPTT UE.
  • An application layer identifier of the first user of the MCPTT UE where an application layer entity of the MCPTT UE obtains the MCPTT UE from the MCPTT UE database.
  • An application layer identifier of the first user wherein the database pre-stores a correspondence between a user using the MCPTT UE and an application layer identifier of the user.
  • the embodiment of the present invention provides a discovery method, where an MCPTT UE sends an application layer identifier including a first user that uses the MCPTT UE.
  • the discovery message includes the application layer identifier of the first user of the MCPTT UE, so that the receiving device can know who the user of the used MCPTT UE is, and thus can accurately identify the other party, and perform service communication through the Prose mode, thereby avoiding the present If the existing target user cannot identify the source user, the target user cannot communicate with the source user through the Prose mode.
  • FIG. 6 is a structural diagram of an MCPTT UE 30 according to an embodiment of the present invention, which is used to perform the method in the first embodiment.
  • the MCPTT UE 30 may include:
  • the sending unit 301 is configured to send a discovery message, where the discovery message includes: application layer identifier information of a discovery target, where the discovery target is at least one target user or at least one communication group of the first user using the MCPTT UE group.
  • the discovery target may be determined by the first user using the MCPTT UE to identify some target users or some communication groups.
  • the target user may be any user who uses the MCPTT UE to obtain the MCPTT service, and may be in the same position as the first user using the MCPTT UE.
  • the same communication group may also be in a different communication group from the first user using the MCPTT UE, and is not limited herein; the application layer identification information of the target user is used to identify the target user, and may be a third generation partner program.
  • 3GPP 3rd generation partnership project, abbreviation: 3GPP
  • 3GPP defines an external identifier, such as: mobile subscriber number (English: Mobile Subscriber International ISDN/PSTN number, abbreviation: MSISDN), ISDN is integrated service digital network, is integrated service The short name of the digital network, the PSTN is a public switched telephone network, which is an abbreviation of the public switched telephone network, and may also be a Session Initiation Protocol (Uniform Resource Identity, SIP URI).
  • the communication group can be MCPTT
  • the application layer identifier information of the communication group may be a group identifier of the communication group, and may be an application layer group identifier, which is used to identify the group name of the communication group in the MCPTT system, for example,
  • a fire department includes three communication groups: a communication group 1, a communication group 2, and a communication group 3, wherein the group identification of the communication group 1 is an emergency group, and the group identification of the communication group 2 is a leading group.
  • the group ID of the communication group 3 is a service group.
  • the receiving unit 302 is configured to receive a response message sent by the second MCPTT UE, where the response message includes: a layer 2 identifier of the second MCPTT UE and an application layer identifier of a user using the second MCPTT UE.
  • the second MCPTT UE when the discovery target is the at least one target user, the second MCPTT UE is an MCPTT UE currently used by any one of the at least one target users; and when the discovery target is the at least one In the communication group, the second MCPTT UE is an MCPTT UE currently used by a user in any one of the at least one communication group.
  • the MCPTT system different MCPTT UEs can communicate directly in a one-to-many manner using a connectionless state, establish a user plane channel for service communication, and can also transmit messages to each other through the control plane.
  • the user plane includes six layers from top to bottom (direction indicated by the arrow in FIG. 3) as shown in FIG. 3: Application, Internet Protocol Address (IP) Address Resolution Protocol (ARP) Layer, Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) layer, Media Access Control (MAC), Physical Layer (Physical, PHY), application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • IP Internet Protocol Address
  • ARP Address Resolution Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • Physical Layer Physical Layer
  • application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • the control layer message or data of the application layer is included as a payload in the data packet for the bottom layer.
  • the message is sent to the bottom layer, and the bottom layer performs corresponding processing (such as encapsulation and forwarding), and then sends it to the bottom layer of the peer device, and then After the bottom layer of the end device performs corresponding processing (such as receiving and unpacking), the message is transmitted to the application layer; the control surface is as shown in FIG. 4 from top to bottom (in the direction indicated by the arrow in FIG. 4).
  • the layer 3 includes a Proximity-based Services Protocol (Prose Protocol) layer, a Media Access Control (MAC) layer, and a physical layer (PHY). Therefore, in the embodiment of the present invention,
  • the discovery message can also be sent as an application layer message, included in the user plane data, or sent as a control plane signaling message.
  • the sending unit 301 is specifically configured to:
  • the application layer entity of the MCPTT UE determines to send a discovery message, it sends a discovery message to the bottom entity of the MCPTT UE, so that the underlying entity of the MCPTT UE sends the discovery message in the user plane data and sends it out.
  • the discovery message is used to request to discover some other users around the user or some of the other communication groups, and the first user using the MCPTT UE may trigger the sending of the discovery message by using a trigger button on the MCPTT UE application layer entity.
  • the MCPTT UE may also be triggered by the first user to send a discovery message, which is not limited by the present invention.
  • the sending unit is specifically configured to:
  • the discovery message is sent as a control plane signaling message.
  • the discovery message is used to request to discover some other users around the user or some of the other communication groups, and the first user using the MCPTT UE may trigger the sending of the discovery through a trigger button on the Pros Protocol layer entity of the MCPTT UE.
  • the message may be triggered by the first user to trigger the MCPTT UE to send the discovery message, which is not limited by the present invention.
  • the discovery message may further include: a layer 2 identifier of the MCPTT UE, an application layer identifier of a user using the MCPTT UE, and a layer 2 identifier of the MCPTT UE may be media selected Enter the control layer identifier, such as the Media Access Control (MAC).
  • MAC Media Access Control
  • the sending unit 301 can be broadcasted.
  • the method sends a discovery message, so that any discovery target in the MCPTT system can receive the discovery message, and/or can obtain the group layer two address of the communication group, and send the discovery message by using the group layer two address as the target address. Therefore, all the users except the first user in the communication group can receive the discovery message, and the implementation manner in which the sending unit 301 sends the discovery message by using the group 2 address as the target address is as follows:
  • the MCPTT UE Can also contain:
  • An obtaining unit 303 configured to acquire a group layer two address of the first communication group
  • the sending unit 301 is specifically configured to send the discovery message to the group layer two address, so that all users in the first communication group except the first user receive the discovery message.
  • the discovery target is the at least one communication group
  • the first user is in a second communication group of the at least one communication group
  • the obtaining unit 303 is specifically configured to acquire a group layer two address of the second communication group.
  • the sending unit 301 is specifically configured to send the discovery message to the group layer two address, so that all users in the second communication group except the first user receive the discovery message.
  • the group 2 address may be a media access control layer identifier of the communication group, such as a MAC address, used to identify the target communication group.
  • the receiving unit 302 may be configured to receive a response message sent by the at least one second MCPTT UE in a one-to-one manner, and may further be configured to receive the at least one second MCPTT.
  • the application layer identification information of the discovery target may be encrypted information
  • the discovery message may further include a security parameter
  • the security parameter is used to make the second MCPTT UE according to the security
  • the security parameter may be a key identifier.
  • the acquiring unit 303 is further configured to: before the sending unit 301 sends the discovery message, acquire an application layer identifier of the first user that uses the MCPTT UE.
  • the acquiring unit 303 may be located in an application layer entity of the MCPTT UE, where the acquiring unit 303 acquires the first using the MCPTT UE.
  • the application layer identifier of a user may be obtained by acquiring an application layer identifier of a first user using the MCPTT UE from the MCPTT UE database, where the database is pre-stored with a user using the MCPTT UE and a user. Correspondence of application layer identification.
  • the acquiring unit 303 may be located in the Prose Protocol layer entity of the MCPTT UE, and the acquiring unit 303 may obtain the application layer identifier of the first user using the MCPTT UE, which may be: Acquiring an application layer identifier of the first user that uses the MCPTT UE from an application layer entity of the MCPTT UE, where an application layer entity of the MCPTT UE acquires an application layer of the first user using the MCPTT UE from the MCPTT UE database The identifier, wherein the database pre-stores a correspondence between a user using the MCPTT UE and an application layer identifier of the user.
  • an embodiment of the present invention provides a MCPTT UE, which sends a discovery message including the identification information of the discovery target, and receives the layer 2 identifier of the second MCPTT UE that is sent by the at least one second MCPTT UE, and uses the foregoing
  • the response message of the application layer identifier of the user of the second MCPTT UE includes the layer 2 identifier of the MCPTT UE and the application layer identifier of the user using the MCPTT UE, so that the sender can determine not only the layer 2 identifier of the MCPTT UE used by the other party but also the user who uses the MCPTT UE.
  • the other party can accurately identify the other party and communicate with the target user through the Prose mode. problem.
  • FIG. 7 is a structural diagram of an MCPTT UE 40 according to an embodiment of the present invention. The method is applied to the method in the second embodiment. As shown in FIG. 7, the MCPTT UE 40 may include:
  • the obtaining unit 401 is configured to acquire an application layer identifier of the first user that uses the MCPTT UE.
  • the user's application layer identifier is used to identify the user, and may be an external identifier defined by the 3rd generation partnership project (English: 3rd generation partnership project, abbreviation: 3GPP), such as: mobile subscriber number (English: Mobile Subscriber International ISDN/PSTN number, abbreviation: MSISDN), ISDN is an integrated service digital network, short for integrated service digital network, PSTN is public switched telephone network, short for public switched telephone network; can also be unified for session initiation protocol Resource Initiation Protocol (Uniform resource Identity, SIP URI).
  • 3rd generation partnership project International 3rd generation partnership project, abbreviation: 3GPP
  • MSISDN Mobile Subscriber International ISDN/PSTN number
  • ISDN is an integrated service digital network, short for integrated service digital network
  • PSTN is public switched telephone network, short for public switched telephone network
  • SIP URI Uniform resource Identity
  • the sending unit 402 is configured to: after the acquiring unit 401 acquires an application layer identifier of a user that uses the MCPTT UE, send a discovery message, where the discovery message includes: including the first user that uses the MCPTT UE Application layer identifier.
  • the MCPTT system different MCPTT UEs can communicate directly in a one-to-many manner using a connectionless state, establish a user plane channel for service communication, and can also transmit messages to each other through the control plane.
  • the user plane includes six layers from top to bottom (direction indicated by the arrow in FIG. 3) as shown in FIG. 3: Application, Internet Protocol Address (IP) Address Resolution Protocol (ARP) Layer, Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) layer, Media Access Control (MAC), Physical Layer (Physical, PHY), application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • IP Internet Protocol Address
  • ARP Address Resolution Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • Physical Layer Physical Layer
  • application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • the control layer message or data of the application layer is included as a payload in the data packet for the bottom layer.
  • the message is delivered to the underlying layer.
  • corresponding processing such as encapsulation and forwarding
  • it is sent to the bottom layer of the peer device, and then the bottom layer of the peer device performs corresponding processing (such as receiving and unpacking) and then transmits the message to the application layer;
  • the top-down may include three layers: a Proximity-based Services Protocol (Prose Protocol) layer and a Media Access Control (MAC) layer.
  • the physical layer (PHY) therefore, in the embodiment of the present invention, the discovery message may be sent as an application layer message, included in the user plane data, or may be sent as a control plane signaling message.
  • the sending unit 402 may specifically be used to:
  • the application layer entity of the MCPTT UE After the application layer entity of the MCPTT UE determines to send the discovery message, it sends a discovery message to the underlying entity of the MCPTT UE, so that the underlying entity of the MCPTT UE sends the discovery message in the user plane data and sends it out.
  • the discovery message is used to request some users in the vicinity of the user of the MCPTT UE or some users in other communication groups to discover the user, and may be used by the first user using the MCPTT UE through the MCPTT UE application layer entity.
  • the triggering button triggers the sending of the discovery message, and the first user may trigger the MCPTT UE to send the discovery message in other manners, which is not limited by the present invention.
  • the sending unit 402 may be specifically configured to:
  • the discovery message is sent as a control plane signaling message.
  • the discovery request message is used to request some users in the vicinity of the user of the MCPTT UE or some users in other communication groups to discover the user, and may pass the Prospence protocol of the MCPTT UE by the first user using the MCPTT UE.
  • the triggering button on the layer entity triggers the sending of the discovery message, and the first user may trigger the MCPTT UE to send the discovery message in other manners, which is not limited by the present invention.
  • the obtaining unit 401 may be: acquiring, by using the MCPTT UE database, the first user that uses the MCPTT UE from the MCPTT UE.
  • An application layer identifier wherein the database pre-stores a correspondence between a user using the MCPTT UE and an application layer identifier of the user.
  • the MCPTT UE obtains the application layer identifier of the first user that uses the MCPTT UE, and may be: acquiring the first using the MCPTT UE from the application layer entity of the MCPTT UE.
  • An application layer identifier of the user, the application layer entity of the MCPTT UE acquires an application layer identifier of the first user using the MCPTT UE from the MCPTT UE database, where the database pre-stores a user using the MCPTT UE and The corresponding relationship of the user's application layer identifier.
  • the discovery message may further include: a layer 2 identifier of the MCPTT UE, where the layer 2 identifier of the MCPTT UE is a medium access control layer identifier, such as a media access control layer (Media Access Control, MAC) )address.
  • a layer 2 identifier of the MCPTT UE is a medium access control layer identifier, such as a media access control layer (Media Access Control, MAC) )address.
  • MAC media access control layer
  • the sending unit 402 may be specifically configured to send a discovery message by means of a broadcast, so that all users in the MCPTT system can receive the discovery message, and/or can also obtain the first The group 2 address of the communication group to which the user belongs; the group 2 address is used as the target address, and the discovery message is sent to the target address, so that all users in the group can receive the discovery message, where
  • the sending unit 402 uses the group layer two address as the target address, and sends the discovery message to the target address as follows:
  • the obtaining unit 401 is further configured to acquire a group two address of the first communication group to which the first user belongs;
  • the sending unit 402 is specifically configured to send the discovery message to the group layer two address, so that all users in the first communication group except the first user receive the discovery message.
  • the group 2 address of the first communication group may be a media access control layer identifier of the first communication group, such as a MAC address.
  • the application layer identifier of the first user is encrypted, and the discovery message further includes a security parameter, where the security parameter is used in the first communication group.
  • the application layer identifier of the first user that uses the MCPTT UE in the discovery message is obtained.
  • an embodiment of the present invention provides an MCPTT UE, which sends an application layer identifier including a first user that uses the MCPTT UE.
  • the discovery message includes the application layer identifier of the first user of the MCPTT UE, so that the receiving device can know who the user of the used MCPTT UE is, and thus can accurately identify the other party, and perform service communication through the Prose mode, thereby avoiding the present If the existing target user cannot identify the source user, the target user cannot communicate with the source user through the Prose mode.
  • FIG. 8 is a structural diagram of an MCPTT UE 50 according to an embodiment of the present invention. The method for performing the first embodiment is performed.
  • the MCPTT UE 50 may include: a communication unit 501, and a processor 502. , a memory 503, at least one communication bus 504, for implementing connection and mutual communication between the devices;
  • the communication unit 501 is configured to perform data transmission with an external network element.
  • the processor 502 may be a central processing unit (English: central processing unit, referred to as CPU).
  • the memory 503 may be a volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM); or non-volatile memory (English: non-volatile memory), for example Read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: solid-state drive, abbreviation :SSD); or a combination of the above types of memory and providing instructions and data to the processor 502.
  • volatile memory such as random access memory (English: random-access memory, abbreviation: RAM); or non-volatile memory (English: non-volatile memory), for example Read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: solid-state drive, abbreviation :SSD); or a combination
  • the communication unit 501 is configured to send a discovery message, where the discovery message includes: application layer identification information of a discovery target, where the discovery target is to use the MCPTT UE At least one target user or at least one communication group of the first user.
  • the second MCPTT UE And receiving a response message sent by the second MCPTT UE, where the response message includes: a layer 2 identifier of the second MCPTT UE and an application layer identifier of a user using the second MCPTT UE.
  • the discovery target may be determined by the first user using the MCPTT UE to identify some target users or some communication groups.
  • the target user may be any user who uses the MCPTT UE to obtain the MCPTT service, and may be in the same position as the first user using the MCPTT UE.
  • the same communication group may also be in a different communication group from the first user using the MCPTT UE, and is not limited herein; the application layer identification information of the target user is used to identify the target user, and may be a third generation partner program.
  • the communication group may be any communication group in the MCPTT system, and the application layer identification information of the communication group may be a group identifier of the communication group, which may be an application layer group identifier, and used to identify the communication group in the MCPTT system.
  • the group name in the middle for example, a fire department contains three communication groups: communication group 1, communication group 2, and communication group 3, wherein the group identification of the communication group 1 is an emergency group, and the communication group 2
  • the group ID is the lead group, and the group ID of the communication group 3 is the service group.
  • the second MCPTT UE when the discovery target is the at least one target user, the second MCPTT UE is an MCPTT UE currently used by any one of the at least one target users; and when the discovery target is the at least one In the communication group, the second MCPTT UE is an MCPTT UE currently used by a user in any one of the at least one communication group.
  • a connectionless state can be used between different MCPTT UEs.
  • the one-to-many method directly communicates, establishes user plane channels for service communication, and can also transmit messages to each other through the control plane, wherein the user plane is as shown in FIG. 3 from top to bottom (FIG. 3)
  • the direction indicated by the arrow includes six layers in sequence: Application, Internet Protocol Address (IP) Address Resolution Protocol (ARP) layer, Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) layer, Media Access Control (MAC), Physical Layer (Physical, PHY), application layer can be called high-level, one or more layers below the application layer It can be called the bottom layer.
  • IP Internet Protocol Address
  • ARP Address Resolution Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • Physical Layer Physical Layer
  • application layer can be called high-level, one or more layers below the application layer It can be called the bottom layer.
  • the control layer message or data of the application layer is used as the payload in the data packet: after the application layer initiates the message, the message is transmitted to the bottom layer, and the bottom layer is After corresponding processing (such as encapsulation and forwarding), it is sent to the bottom layer of the peer device, and then processed by the bottom layer of the peer device (such as receiving and unpacking).
  • the information is transmitted to the application layer; the control plane, as shown in FIG.
  • the discovery message may also be used as an application layer message, and may be sent in the user plane data, or may be used as a control plane. Signaling message is sent.
  • Proximity-based Services Protocol Proximity-based Services Protocol
  • MAC media access control
  • PHY physical layer
  • the communication unit 501 is specifically configured to:
  • the application layer entity of the MCPTT UE determines to send a discovery message, it sends a discovery message to the bottom entity of the MCPTT UE, so that the underlying entity of the MCPTT UE sends the discovery message in the user plane data and sends it out.
  • the discovery message is used to request to discover some other users around the user or some of the other communication groups, and the first user using the MCPTT UE may trigger the sending of the discovery message by using a trigger button on the MCPTT UE application layer entity.
  • the MCPTT UE may also be triggered by the first user to send a discovery message, which is not limited by the present invention.
  • the sending unit is specifically configured to:
  • the discovery message is sent as a control plane signaling message.
  • the discovery message is used to request to discover some other users around the user or some of the other communication groups, and the first user using the MCPTT UE may trigger the sending of the discovery through a trigger button on the Pros Protocol layer entity of the MCPTT UE.
  • the message may be triggered by the first user to trigger the MCPTT UE to send the discovery message, which is not limited by the present invention.
  • the discovery message may further include: a layer 2 identifier of the MCPTT UE, an application layer identifier of a user using the MCPTT UE, and a layer 2 identifier of the MCPTT UE may be media selected Enter the control layer identifier, such as the Media Access Control (MAC).
  • MAC Media Access Control
  • the communication unit 501 may send a discovery message by means of a broadcast, so that any discovery target in the MCPTT system can receive the discovery message, and/or can acquire the group layer of the communication group. Sending a discovery message by using the group 2 address as the target address, so that all users in the communication group can receive the discovery message, wherein the communication unit 501 uses the group layer two address as the target address.
  • the implementation of sending a discovery message is as follows:
  • the processor 502 is configured to acquire the location a group two address of the first communication group;
  • the communication unit 501 is specifically configured to send the discovery message to the group layer two address, so that all users in the first communication group except the first user receive the discovery message.
  • the discovery target is the at least one communication group
  • the first user is in a second communication group of the at least one communication group
  • the processor 502 is specifically configured to acquire a group two address of the second communication group.
  • the communication unit 501 is specifically configured to send the discovery message to the group layer two address, so that all users in the second communication group except the first user receive the discovery message.
  • the group 2 address may be a media access control layer identifier of the communication group, such as a MAC address, used to identify the target communication group.
  • the communication unit 501 may be configured to receive a response message sent by at least one second MCPTT UE in a one-to-one manner, and may also be configured to receive at least one second MCPTT. A response message sent by the UE in a one-to-many manner.
  • the application layer identification information of the discovery target may be encrypted information
  • the discovery message may further include a security parameter
  • the security parameter is used to make the second MCPTT
  • the UE obtains the application layer identifier of the target in the discovery message and returns a response message.
  • the security parameter may be a key identifier.
  • the processor 502 is further configured to acquire an application layer identifier of the first user using the MCPTT UE before the communication unit 501 sends the discovery message.
  • the processor 502 may be located in an application layer entity of the MCPTT UE, where the processor 502 acquires the first use of the MCPTT UE.
  • the application layer identifier of a user may be obtained by acquiring an application layer identifier of a first user using the MCPTT UE from the MCPTT UE database, where the database is pre-stored with a user using the MCPTT UE and a user. Correspondence of application layer identification.
  • the processor 502 may be located in a Prose Protocol layer entity of the MCPTT UE, and the processor 502 may obtain an application layer identifier of the first user using the MCPTT UE. Acquiring an application layer identifier of the first user that uses the MCPTT UE from an application layer entity of the MCPTT UE, where an application layer entity of the MCPTT UE acquires an application layer of the first user using the MCPTT UE from the MCPTT UE database Logo, where, The database stores in advance a correspondence relationship between a user who uses the MCPTT UE and an application layer identifier of the user.
  • an embodiment of the present invention provides a MCPTT UE, which sends a discovery message including the identification information of the discovery target, and receives the layer 2 identifier of the second MCPTT UE that is sent by the at least one second MCPTT UE, and uses the foregoing
  • the response message of the application layer identifier of the user of the second MCPTT UE includes the layer 2 identifier of the MCPTT UE and the application layer identifier of the user using the MCPTT UE, so that the sender can determine not only the layer 2 identifier of the MCPTT UE used by the other party but also the user who uses the MCPTT UE.
  • the other party can accurately identify the other party and communicate with the target user through the Prose mode. problem.
  • FIG. 9 is a structural diagram of an MCPTT UE 60 according to an embodiment of the present invention. The method is applied to the method according to the second embodiment.
  • the MCPTT UE 60 may include: a communication unit 601, a processor 602, a memory 603, at least one communication bus 604, for implementing connection and mutual communication between the devices;
  • the communication unit 601 is configured to perform data transmission with an external network element.
  • the processor 602 may be a central processing unit (English: central processing unit, referred to as CPU).
  • the memory 603 may be a volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM); or non-volatile memory (English: non-volatile memory), for example Read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: solid-state drive, abbreviation :SSD); or a combination of the above types of memory and providing instructions and data to the processor 602.
  • volatile memory such as random access memory (English: random-access memory, abbreviation: RAM); or non-volatile memory (English: non-volatile memory), for example Read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: solid-state drive, abbreviation :SSD); or a combination
  • the processor 602 is configured to acquire an application layer identifier of the first user that uses the MCPTT UE.
  • the user's application layer identifier is used to identify the user, and may be an external identifier defined by the 3rd generation partnership project (English: 3rd generation partnership project, abbreviation: 3GPP), such as: mobile subscriber number (English: Mobile Subscriber International ISDN/PSTN number, abbreviation: MSISDN), ISDN is an integrated service digital network, short for integrated service digital network, PSTN is public switched telephone network, short for public switched telephone network; can also be unified for session initiation protocol Resource Initiation Protocol (Uniform resource Identity, SIP URI).
  • 3rd generation partnership project International 3rd generation partnership project, abbreviation: 3GPP
  • MSISDN Mobile Subscriber International ISDN/PSTN number
  • ISDN is an integrated service digital network, short for integrated service digital network
  • PSTN is public switched telephone network, short for public switched telephone network
  • SIP URI Uniform resource Identity
  • the communication unit 601 is configured to: after the processor 602 acquires an application layer identifier of the user that uses the MCPTT UE, send a discovery message, where the discovery message includes: including the first user that uses the MCPTT UE Application layer identification.
  • the MCPTT system different MCPTT UEs can communicate directly in a one-to-many manner using a connectionless state, establish a user plane channel for service communication, and can also transmit messages to each other through the control plane.
  • the user plane includes six layers from top to bottom (direction indicated by the arrow in FIG. 3) as shown in FIG. 3: Application, Internet Protocol Address (IP) Address Resolution Protocol (ARP) Layer, Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) layer, Media Access Control (MAC), Physical Layer (Physical, PHY), application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • IP Internet Protocol Address
  • ARP Address Resolution Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Media Access Control
  • Physical Layer Physical Layer
  • application layer It can be called a high-level, one or more layers below the application layer can be called the bottom layer.
  • the control layer message or data of the application layer is included as a payload in the data packet for the bottom layer.
  • the message is sent to the bottom layer, and then processed by the bottom layer (such as encapsulation and forwarding), and then sent to the bottom layer of the peer device, and then processed by the bottom layer of the peer device (such as receiving and unpacking).
  • the control plane as shown in FIG. 4 from top to bottom (in the direction indicated by the arrow in FIG. 4) may include three layers: Proximity-based Services Protocol (Prose Protocol). Layer, Media Access Control (MAC) layer, physical layer (PHY); therefore, in the embodiment of the present invention,
  • the discovery message can be sent as an application layer message, included in the user plane data, or sent as a control plane signaling message.
  • the communication unit 601 may be specifically configured to:
  • the application layer entity of the MCPTT UE After the application layer entity of the MCPTT UE determines to send the discovery message, it sends a discovery message to the underlying entity of the MCPTT UE, so that the underlying entity of the MCPTT UE sends the discovery message in the user plane data and sends it out.
  • the discovery message is used to request some users in the vicinity of the user of the MCPTT UE or some users in other communication groups to discover the user, and may be used by the first user using the MCPTT UE through the MCPTT UE application layer entity.
  • the triggering button triggers the sending of the discovery message, and the first user may trigger the MCPTT UE to send the discovery message in other manners, which is not limited by the present invention.
  • the communication unit 601 may be specifically configured to:
  • the discovery message is sent as a control plane signaling message.
  • the discovery request message is used to request some users in the vicinity of the user of the MCPTT UE or some users in other communication groups to discover the user, and may pass the Prospence protocol of the MCPTT UE by the first user using the MCPTT UE.
  • the triggering button on the layer entity triggers the sending of the discovery message, and the first user may trigger the MCPTT UE to send the discovery message in other manners, which is not limited by the present invention.
  • the processor 602 when the discovery message uses the user plane data transmission, the processor 602 is located in the application layer entity of the MCPTT UE, and the processor 602 obtains the application layer identifier of the first user using the MCPTT UE, which may be:
  • the application layer identifier of the first user that uses the MCPTT UE is obtained in the MCPTT UE database, where the database pre-stores the correspondence between the user using the MCPTT UE and the application layer identifier of the user.
  • the MCPTT UE acquires The application layer identifier of the first user of the MCPTT UE may be obtained by: acquiring an application layer identifier of a first user using the MCPTT UE from an application layer entity of the MCPTT UE, where an application layer entity of the MCPTT UE is The application layer identifier of the first user using the MCPTT UE is obtained in the MCPTT UE database, where the database pre-stores the correspondence between the user using the MCPTT UE and the application layer identifier of the user.
  • the discovery message may further include: a layer 2 identifier of the MCPTT UE, where the layer 2 identifier of the MCPTT UE is a medium access control layer identifier, such as a media access control layer (Media Access Control, MAC) )address.
  • a layer 2 identifier of the MCPTT UE is a medium access control layer identifier, such as a media access control layer (Media Access Control, MAC) )address.
  • MAC media access control layer
  • the communication unit 601 may be specifically configured to send a discovery message by means of a broadcast, so that all users in the MCPTT system can receive the discovery message, and/or can also obtain the first a group 2 address of the communication group to which the user belongs; the group address 2 address is used as the target address, and the discovery message is sent to the target address, so that all users in the group can receive the discovery message, where
  • the communication unit 601 uses the group layer two address as a target address, and sends the discovery message to the target address as follows:
  • the processor 602 is further configured to acquire a group two address of the first communication group to which the first user belongs;
  • the communication unit 601 is specifically configured to send the discovery message to the group layer two address, so that all users in the first communication group except the first user receive the discovery message.
  • the group 2 address of the first communication group may be a media access control layer identifier of the first communication group, such as a MAC address.
  • the application layer identifier of the first user is encrypted, and the discovery message further includes a security parameter, where the security parameter is used in the first communication group.
  • the application layer identifier of the first user that uses the MCPTT UE in the discovery message is obtained.
  • an embodiment of the present invention provides an MCPTT UE, which includes An application layer identifier of the first user of the MCPTT UE.
  • the discovery message includes the application layer identifier of the first user of the MCPTT UE, so that the receiving device can know who the user of the used MCPTT UE is, and thus can accurately identify the other party, and perform service communication through the Prose mode, thereby avoiding the present If the existing target user cannot identify the source user, the target user cannot communicate with the source user through the Prose mode.
  • 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, and may be in an electrical, mechanical or other form.
  • 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 purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included 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 hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computing device) A machine, server, or network device, etc.) performs some of the steps of the method 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, and the program code can be stored. Medium.
  • the storage medium may include a read only memory, a random access memory, a magnetic disk or an optical disk, or the like.

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Abstract

本发明公开了一种发现方法及设备,涉及无线通信技术领域,以解决现有通信双方不能准确地发现对方,进而不能保证通信双方通过Prose方式进行业务通信的问题。本发明提供的方法包括:发送发现消息,所述发现消息包含:发现目标的应用层标识信息,所述发现目标为使用所述第一MCPTT UE的第一用户的至少一个目标用户或至少一个通信群组;接收第二MCPTT UE发送的响应消息,所述响应消息包含:所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识。

Description

一种发现方法及设备 技术领域
本发明涉及无线通信技术领域,尤其涉及一种发现方法及设备。
背景技术
关键任务即按即说(Mission Critical Push To Talk,简称MCPTT)系统可支持直接模式工作(Direct Mode Operation,简称DMO)的场景,如TS22.179定义MCPTT可支持一对一(one-to-one)通信或私人通话(private call)两种DMO场景。在MCPTT系统中,同一用户不仅可以隶属多个通信群组(group),而且还可以使用不同的MCPTT用户设备(User Equipment,简称UE)获取MCPTT业务,例如:在图1所示的MCPTT系统中,user1隶属通信群组1和通信群组2,且user1可以使用MCPTT UE1、MCPTT UE2和MCPTT UE3获得MCPTT业务。
由于在MCPTT系统下一个用户可以使用不同的MCPTT UE获取MCPTT业务,所以为了保证正常通信,DMO场景下的通信双方不仅需要获知对方的应用层标识,即用户标识(user ID),还需要获知对方当前使用的MCPTT UE的层二标识(layer 2ID),即设备标识,以便准确地识别对方,进而通过近距离业务(Proximity-based Services,简称Prose)方式进行业务通信。
但是,现有技术中,当源用户需要发现至少一个目标用户时,通常采用下述发现方法发现对方:源用户向至少一个目标用户发送包含用户当前使用的MCPTT UE的层二标识的发现消息,目标用户接收到发现消息后,向用户返回包含目标用户当前使用的MCPTT UE的层二标识的响应消息,由于源用户不能根据所述目标用户返回的响应消息识别出目标用户,导致源用户不能通过Prose方式与目标用户进行业务通信。
发明内容
本发明的实施例提供一种发现方法及设备,以解决现有源用户不能根据所述目标用户返回的响应消息识别出目标用户,导致源用户不能通过Prose方式与目标用户进行业务通信的问题。
为达到上述目的,本发明的实施例采用如下技术方案:
第一方面,本发明实施例提供一种发现方法,应用于第一关键任务即按即说MCPTT用户设备UE,所述方法包括:
发送发现消息,所述发现消息包含:发现目标的应用层标识信息,所述发现目标为使用所述第一MCPTT UE的第一用户的至少一个目标用户或至少一个通信群组;
接收第二MCPTT UE发送的响应消息,所述响应消息包含:所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识;
其中,当所述发现目标为所述至少一个目标用户时,所述第二MCPTT UE为所述至少一个目标用户中任一目标用户当前使用的MCPTT UE;当所述发现目标为所述至少一个通信群组时,所述第二MCPTT UE为所述至少一个通信群组中任一通信群组中的用户当前使用的MCPTT UE。
在第一方面的第一种可实现方式中,结合第一方面,所述发现消息为应用层消息。
在第一方面的第二种可实现方式中,结合第一方面的第一种可实现方式,所述发现消息包含在所述第一MCPTT UE的用户面数据中。
在第一方面的第三种可实现方式中,结合第一方面,所述发现消息为所述第一MCPTT UE的控制面信令消息。
在第一方面的第四种可实现方式中,结合第一方面至第一方面的第三种可实现方式中任一种可实现方式,所述发现目标的应用层标识信息为加密信息,所述发现消息还包含安全参数,所述安全参数用于使所述第二MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中发现目标的应用层标识并返回响应 消息。
在第一方面的第五种可实现方式中,结合第一方面至第一方面的第四种可实现方式中的任一种可实现方式,当所述发现目标为所述至少一个目标用户,且所述至少一个目标用户中存在一个目标用户与使用所述第一用户处于第一通信群组时,所述发送发现消息包括:
获取所述第一通信群组的组层二地址;
向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
在第一方面的第六种可实现方式中,结合第一方面至第一方面的第四种可实现方式中的任一种可实现方式,当所述发现目标为所述至少一个通信群组,且所述第一用户处于所述至少一个通信群组中的第二通信群组时,所述发送发现消息包括:
获取所述第二通信群组的组层二地址;
向所述组层二地址发送所述发现消息,以使得所述第二通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
在第一方面的第七种可实现方式中,结合第一方面至第一方面的第六种可实现方式中的任一种可实现方式,
所述第一MCPTT UE的层二标识和使用所述第一MCPTT UE的用户的应用层标识。
第二方面,本发明实施例提供一种发现方法,应用于关键任务即按即说MCPTT用户设备UE,所述方法包括:
获取使用所述MCPTT UE的第一用户的应用层标识;
发送发现消息,其中,所述发现消息包含所述使用所述MCPTT UE的第一用户的应用层标识。
在第二方面的第二种可实现方式中,结合第二方面的第一种可实现方式,所述发现消息包含在所述MCPTT UE的用户面数据中。
在第二方面的第三种可实现方式中,结合第二方面,所述发 现消息为所述MCPTT UE的控制面信令消息。
在第二方面的第四种可实现方式中,结合第二方面至第二方面的第三种可实现方式中任一种可实现方式,所述发送发现消息包括:
获取所述第一用户所属的第一通信群组的组层二地址;
向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
在第二方面的第五种可实现方式中,结合第二方面至第二方面的第四种可实现方式中的任一种可实现方式,
所述第一用户的应用层标识被加密,所述发现消息还包含安全参数,所述安全参数用于使所述第一通信群组中除所述MCPTT UE之外的其他MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中使用所述MCPTT UE的第一用户的应用层标识。
在第二方面的第六种可实现方式中,结合第二方面至第二方面的第五种可实现方式,所述发现消息还包含:
所述MCPTT UE的层二标识。
第三方面,本发明实施例提供一种关键任务即按即说用户设备MCPTT UE,包括:
发送单元,用于发送发现消息,所述发现消息包含:发现目标的应用层标识信息,所述发现目标为使用所述第一MCPTT UE的第一用户的至少一个目标用户或至少一个通信群组;
接收单元,用于接收第二MCPTT UE发送的响应消息,所述响应消息包含:所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识;
其中,当所述发现目标为所述至少一个目标用户时,所述第二MCPTT UE为所述至少一个目标用户中任一目标用户当前使用的MCPTT UE;当所述发现目标为所述至少一个通信群组时,所述第二MCPTT UE为所述至少一个通信群组中任一通信群组中的用户 当前使用的MCPTT UE。
在第三方面的第一种可实现方式中,结合第三方面,所述发现消息为应用层消息。
在第三方面的第二种可实现方式中,结合第三方面的第一种可实现方式,所述发现消息包含在所述MCPTT UE的用户面数据中。
在第三方面的第三种可实现方式中,结合第三方面,所述发现消息为所述MCPTT UE的控制面信令消息。
在第三方面的第四种可实现方式中,结合第三方面至第三方面的第三种可实现方式中任一种可实现方式,所述发现目标的应用层标识信息为加密信息,所述发现消息还包含安全参数,所述安全参数用于使所述第二MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中发现目标的应用层标识并返回响应消息。
在第三方面的第五种可实现方式中,结合第三方面至第三方面的第四种可实现方式中的任一种可实现方式,当所述发现目标为所述至少一个目标用户,且所述至少一个目标用户中存在一个目标用户与所述第一用户处于第一通信群组时,所述MCPTT UE还包括:
获取单元,用于获取所述第一通信群组的组层二地址;
所述发送单元,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
在第三方面的第六种可实现方式中,结合第三方面至第三方面的第四种可实现方式中的任一种可实现方式,当所述发现目标为所述至少一个通信群组,且所述第一用户处于所述至少一个通信群组中的第二通信群组时,所述MCPTT UE还包括:
获取单元,用于获取所述第二通信群组的组层二地址;
所述发送单元,具体用于向所述组层二地址发送所述发现消息,以使得所述第二通信群组内除所述第一用户之外的所有用户接收到 所述发现消息。
在第三方面的第七种可实现方式中,结合第三方面至第三方面的第六种可实现方式中的任一种可实现方式,所述发现消息还包含:
所述MCPTT UE的层二标识和使用所述MCPTT UE的用户的应用层标识。
第四方面,本发明实施例提供一种MCPTT UE,包括:
获取单元,用于获取使用所述MCPTT UE的第一用户的应用层标识;
发送单元,用于发送发现消息,其中,所述发现消息包含所述使用所述MCPTT UE的第一用户的应用层标识。
在第方面的第一种可实现方式中,结合第四方面,所述发现消息为应用层消息。
在第四方面的第二种可实现方式中,结合第四方面的第一种可实现方式,所述发现消息包含在所述MCPTT UE的用户面数据中。
在第四方面的第三种可实现方式中,结合第四方面,所述发现消息为所述MCPTT UE的控制面信令消息。
在第四方面的第四种可实现方式中,结合第四方面至第四方面的第三种可实现方式中任一种可实现方式,
所述获取单元,还用于获取所述第一用户所属的第一通信群组的组层二地址;
所述发送单元,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
在第四方面的第五种可实现方式中,结合第四方面至第四方面的第四种可实现方式中的任一种可实现方式,所述第一用户的应用层标识被加密,所述发现消息还包含安全参数,所述安全参数用于使所述第一通信群组中除所述MCPTT UE之外的其他MCPTT  UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中使用所述MCPTT UE的第一用户的应用层标识。
在第四方面的第六种可实现方式中,结合第四方面至第四方面的第五种可实现方式中的任一种可实现方式,所述发现消息还包含:
所述MCPTT UE的层二标识。
第五方面,本发明实施例提供一种关键任务即按即说用户设备MCPTT UE,包括:
通信单元,用于发送发现消息,所述发现消息包含:发现目标的应用层标识信息,所述发现目标为使用所述第一MCPTT UE的第一用户的至少一个目标用户或至少一个通信群组;
以及,接收第二MCPTT UE发送的响应消息,所述响应消息包含:所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识;
其中,当所述发现目标为所述至少一个目标用户时,所述第二MCPTT UE为所述至少一个目标用户中任一目标用户当前使用的MCPTT UE;当所述发现目标为所述至少一个通信群组时,所述第二MCPTT UE为所述至少一个通信群组中任一通信群组中的用户当前使用的MCPTT UE。
在第五方面的第一种可实现方式中,结合第五方面,所述发现消息为应用层消息。
在第五方面的第二种可实现方式中,结合第五方面的第一种可实现方式,所述发现消息包含在所述MCPTT UE的用户面数据中。
在第五方面的第三种可实现方式中,结合第五方面,所述发现消息为所述MCPTT UE的控制面信令消息。
在第五方面的第四种可实现方式中,结合第五方面至第五方面的第三种可实现方式中任一种可实现方式,所述发现目标的应用层标识信息为加密信息,所述发现消息还包含安全参数,所述安全 参数用于使所述第二MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中发现目标的应用层标识并返回响应消息。
在第五方面的第五种可实现方式中,结合第五方面至第五方面的第四种可实现方式中的任一种可实现方式,当所述发现目标为所述至少一个目标用户,且所述至少一个目标用户中存在一个目标用户与所述第一用户处于第一通信群组时,所述MCPTT UE还包括:
处理器,用于获取所述第一通信群组的组层二地址;
所述通信单元,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
在第五方面的第六种可实现方式中,结合第五方面至第五方面的第四种可实现方式中的任一种可实现方式,当所述发现目标为所述至少一个通信群组,且所述第一用户处于所述至少一个通信群组中的第二通信群组时,所述MCPTT UE还包括:
获取单元,用于获取所述第二通信群组的组层二地址;
所述通信单元,具体用于向所述组层二地址发送所述发现消息,以使得所述第二通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
在第五方面的第七种可实现方式中,结合第五方面至第五方面的第六种可实现方式中的任一种可实现方式,所述发现消息还包含:
所述MCPTT UE的层二标识和使用所述MCPTT UE的用户的应用层标识。
第六方面,本发明实施例提供一种MCPTT UE,包括:
处理器,用于获取使用所述MCPTT UE的第一用户的应用层标识;
通信单元,用于发送发现消息,其中,所述发现消息包含所述使用所述MCPTT UE的第一用户的应用层标识。
在第方面的第一种可实现方式中,结合第六方面,所述发现消息为应用层消息。
在第六方面的第二种可实现方式中,结合第六方面的第一种可实现方式,所述发现消息包含在所述MCPTT UE的用户面数据中。
在第六方面的第三种可实现方式中,结合第六方面,所述发现消息为所述MCPTT UE的控制面信令消息。
在第六方面的第四种可实现方式中,结合第六方面至第六方面的第三种可实现方式中任一种可实现方式,
所述处理器,还用于获取所述第一用户所属的第一通信群组的组层二地址;
所述通信单元,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
在第六方面的第五种可实现方式中,结合第六方面至第六方面的第四种可实现方式中的任一种可实现方式,所述第一用户的应用层标识被加密,所述发现消息还包含安全参数,所述安全参数用于使所述第一通信群组中除所述MCPTT UE之外的其他MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中使用所述MCPTT UE的第一用户的应用层标识。
在第六方面的第六种可实现方式中,结合第六方面至第六方面的第五种可实现方式中的任一种可实现方式,所述发现消息还包含:
所述MCPTT UE的层二标识。
由上可知,本发明实施例提供一种发现方法及设备,第一MCPTT UE发送包含发现目标的标识信息的发现消息,接收至少一个第二MCPTT UE发送的包含所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识的响应消息。由于响应消息包含MCPTT UE的层二标识以及使用该MCPTT UE的 用户的应用层标识,使得发送端不仅能够确定对方使用的MCPTT UE的层二标识,而且还可以确定使用该MCPTT UE的用户是谁,进而可以准确地识别对方,通过Prose方式进行业务通信,避免了现有源用户不能根据所述目标用户返回的响应消息识别出目标用户,导致源用户不能通过Prose方式与目标用户进行业务通信的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述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为现有MCPTT系统示意图;
图2为本发明实施例提供的一种发现方法的流程图;
图3为本发明实施例提供的用户面示意图;
图4为本发明实施例提供的控制面示意图;
图5为本发明实施例提供的另一种发现方法的流程图;
图6为本发明实施例提供的MCPTT UE30的结构图;
图6A为本发明实施例提供的MCPTT UE30的结构图;
图7为本发明实施例提供的MCPTT UE40的结构图;
图8为本发明实施例提供的MCPTT UE50的结构图;
图9为本发明实施例提供的MCPTT UE60的结构图。
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,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。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前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例一
图2示出了本发明实施例提供的一种发现方法的流程图,应用于关键任务即按即说(Mission Critical Push To Talk,简称MCPTT)系统(如公安系统、消防系统)下的第一MCPTT UE,用于使第一MCPTT UE的用户发现该用户周围的其他一些用户或者一些通信群组,其中,所述第一MCPTT UE可以为MCPTT系统下的任一用户设备,在此不进行限定,如图2所示,所述方法可以包括:
101、第一MCPTT UE发送发现消息,其中,所述发现消息包含:发现目标的应用层标识信息,所述发现目标为使用所述第一MCPTT UE的第一用户的至少一个目标用户或至少一个通信群组。
其中,发现目标可以为使用第一MCPTT UE的第一用户确定发现的一些目标用户或者一些通信群组,目标用户可以为任一使用MCPTT UE获取MCPTT业务的用户,可以与使用第一MCPTT UE的第一用户处于同一通信群组,也可以与使用第一MCPTT UE的第一用户处于不同通信群组,在此不进行限定;目标用户的应用层标识信息用于标识所述目标用户,可以为第三代合作伙伴计划(英文:3rd generation partnership project,缩写:3GPP)定义的一种外部标识,如:移动用户号码(英文:Mobile Subscriber International ISDN/PSTN number,缩写:MSISDN),ISDN为综合业务数字网,是integrated service digital network的简称,PSTN为公共交换电话网络,是public switched telephone network的简称,还可以是会话发起协议的统一资源标识符(Session Initiation Protocol,Uniform resource Identity,SIP URI)。通信群组可以为MCPTT系统中的任一通信群组,通信群组的应用层标识信息可以为通信群组的组标识,可以为应用层组标识,用于标识所述通信群组在MCPTT系统中的小组名称,例如,一消防部门中包含三个通信群组:通信群组1、通信群组2以及通信群组3,其中,通信群组1的组标识为紧急小组,通信群组2的组标识为领导小组,通信群组3的组标识为服务小组。
在MCPTT系统下,不同MCPTT UE之间可以使用无连接态的一对多(one-to-many)的方式直接通信,建立用户面信道进行业务通信,也可以通过控制面信道传输消息,其中,用户面如图3所示从上到下(图3中箭头所示方向)依次包括六层:应用层(Application)、互联网协议(Internet Protocol Address,IP)地址解析协议(Address Resolution Protocol,ARP)层、分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)、无线链路控制(Radio Link Control,RLC)层、媒体接入控制(Media Access Control,MAC)、物理层(Physical,PHY),应用层可称为高层,应用层以下的一个或多个层均可称为底层,通常情况下,在用户面中,应用层的控制面消息或者数据对于底层来说,都是作为载荷包含在数据包。应用层发起消息之后,将消息传送给底层,由底层进行相应处理(如封装、转发)后,发送至对端设备的底层,再由对端设备的底层进行相应处理(如接收、拆封)后将消息传送给应用层;控制面如图4所示从上到下(图4中箭头所示方向)依次可以包括3层:近距离业务协议层(Proximity-based Services Protocol,简称Prose Protocol)层、媒体接入控制(Media Access Control,MAC)层、物理层(Physical,PHY);因此,在本发明实施例中,步骤101中的发现消息也可以作为应用层消息,包含在用户面数据中发送,也可以作为控制面信令消息发送。
当所述发现消息为应用层消息,包含在用户面数据中发送时,所述第一MCPTT UE发送发现消息具体可以包括:
第一MCPTT UE的应用层实体确定发送发现消息,向所述第一MCPTT UE的底层实体发送发现消息;
第一MCPTT UE的底层实体将所述发现消息包含在用户面数据中发送出去。
其中,发现消息用于请求发现用户周围的其他一些用户或者其他通信群组中的一些用户,可以由使用第一MCPTT UE的第一用户通过第一MCPTT UE应用层实体上的触发按钮触发发送所述 发现消息,也可以由第一用户通过其他方式触发第一MCPTT UE发送发现消息,本发明对此不进行限定。
当所述发现消息作为控制面信令消息发送时,所述第一MCPTT UE发送发现消息具体可以包括:
第一MCPTT UE的Prose Protocol层实体确定发送发现消息,将发现消息作为控制面信令消息发送出去。
其中,发现消息用于请求发现用户周围的其他一些用户或者其他通信群组中的一些用户,可以由使用第一MCPTT UE的第一用户通过第一MCPTT UE的Prose Protocol层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发第一MCPTT UE发送发现消息,本发明对此不进行限定。
可选的,本发明实施例中,第一MCPTT UE可以通过广播的方式发送发现消息,以使得MCPTT系统中的任一个发现目标均可接收到发现消息,和/或可以获取通信群组的组层二地址,将所述组层二地址作为目标地址发送发现消息,以使得所述通信群组内除所述第一用户之外的所有用户均可以接收到发现消息,其中,第一MCPTT UE将所述组层二地址作为目标地址发送发现消息的实现方式具体如下:
当所述发现目标为所述至少一个目标用户,且所述至少一个目标用户中存在一个目标用户与使用所述第一用户处于第一通信群组时,所述发送发现消息具体可以包括:
获取所述第一通信群组的组层二地址;
向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
当所述发现目标为所述至少一个通信群组,且所述第一用户处于所述至少一个通信群组中的第二通信群组时,所述发送发现消息具体可以包括:
获取所述第二通信群组的组层二地址;
向所述组层二地址发送所述发现消息,以使得所述第二通信群 组内除所述第一用户之外的所有用户接收到所述发现消息。
可选的,本发明实施例中,所述发现消息还可以包含:所述第一MCPTT UE的层二标识、使用所述第一MCPTT UE的用户的应用层标识,所述第一MCPTT UE的层二标识可以媒体接入控制层标识,如媒体接入控制层地址(Media Access Control,MAC)。
102、第一MCPTT UE接收第二MCPTT UE发送的响应消息;其中,所述响应消息包含:所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识。
其中,当所述发现目标为所述至少一个目标用户时,所述第二MCPTT UE为所述至少一个目标用户中任一目标用户当前使用的MCPTT UE;当所述发现目标为所述至少一个通信群组时,所述第二MCPTT UE为所述至少一个通信群组中任一通信群组中的用户当前使用的MCPTT UE。
可选的,本发明实施例中,第一MCPTT UE可以接收至少一个第二MCPTT UE通过一对一(one-to-one)方式发送的响应消息;还可以接收至少一个第二MCPTT UE通过一对多(one-to-many)方式发送的响应消息。
进一步的,为了保证发现消息传送过程中的安全性,本发明实施例中,所述发现目标的应用层标识信息可以为加密信息,所述发现消息还可以包含安全参数,所述安全参数用于使所述第二MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中发现目标的应用层标识并返回响应消息;优选的,所述安全参数可以为密钥标识。
进一步的,在步骤101之前,所述方法还可以包括:
第一MCPTT UE获取使用所述第一MCPTT UE的第一用户的应用层标识。
其中,当发现消息为应用层消息,包含在用户面数据中时,第一MCPTT UE获取使用所述第一MCPTT UE的第一用户的应用层标识具体可以为:第一MCPTT UE的应用层实体从所述第一 MCPTT UE数据库中获取使用所述第一MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述第一MCPTT UE的用户以及用户的应用层标识的对应关系。
当发现消息为控制面信令消息时,第一MCPTT UE获取使用所述第一MCPTT UE的第一用户的应用层标识具体可以为:第一MCPTT UE的Prose Protocol层实体从所述第一MCPTT UE的应用层实体获取使用所述第一MCPTT UE的第一用户的应用层标识,第一MCPTT UE的应用层实体从所述第一MCPTT UE数据库中获取使用所述第一MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述第一MCPTT UE的用户以及用户的应用层标识的对应关系。
由上可知,本发明实施例提供一种发现方法,第一MCPTT UE发送包含发现目标的标识信息的发现消息,接收至少一个第二MCPTT UE发送的包含所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识的响应消息。由于响应消息包含MCPTT UE的层二标识以及使用该MCPTT UE的用户的应用层标识,使得发送端不仅能够确定对方使用的MCPTT UE的层二标识,而且还可以确定使用该MCPTT UE的用户是谁,进而可以准确地识别对方,通过Prose方式进行业务通信,避免了现有源用户不能根据所述目标用户返回的响应消息识别出目标用户,导致源用户不能通过Prose方式与目标用户进行业务通信的问题。
实施例二
图5示出了本发明实施例提供的另一种发现方法的流程图,应用于关键任务即按即说(Mission Critical Push To Talk,简称MCPTT)系统(如公安系统、消防系统)下的MCPTT UE,用于使一些用户或者一些通信群组发现使用MCPTT UE的用户,其中,所述MCPTT UE可以为MCPTT系统下的任一用户设备,在此不进行限定,如图2所示,所述方法可以包括:
201、MCPTT UE获取使用所述MCPTT UE的第一用户的应用 层标识。
其中,用户的应用层标识用于标识所述用户,可以为第三代合作伙伴计划(英文:3rd generation partnership project,缩写:3GPP)定义的一种外部标识,如:移动用户号码(英文:Mobile Subscriber International ISDN/PSTN number,缩写:MSISDN),ISDN为综合业务数字网,是integrated service digital network的简称,PSTN为公共交换电话网络,是public switched telephone network的简称;还可以为会话发起协议的统一资源标识符(Session Initiation Protocol,Uniform resource Identity,SIP URI)。
202、MCPTT UE发送发现消息,其中,所述发现消息包含:包含所述使用所述MCPTT UE的第一用户的应用层标识。
在MCPTT系统下,不同MCPTT UE之间可以使用无连接态的一对多(one-to-many)的方式直接通信,建立用户面通道进行业务通信,也可以通过控制面相互传输消息,其中,用户面如图3所示从上到下(图3中箭头所示方向)依次包括六层:应用层(Application)、互联网协议(Internet Protocol Address,IP)地址解析协议(Address Resolution Protocol,ARP)层、分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)、无线链路控制(Radio Link Control,RLC)层、媒体接入控制(Media Access Control,MAC)、物理层(Physical,PHY),应用层可称为高层,应用层以下的一个或多个层均可称为底层,通常情况下,在用户面中,应用层的控制面消息或者数据对于底层来说,都是作为载荷包含在数据包:应用层发起消息之后,将消息传送给底层,由底层进行相应处理(如封装、转发)后,发送至对端设备的底层,再由对端设备的底层进行相应处理(如接收、拆封)后将消息传送给应用层;控制面如图4所示从上到下(图4中箭头所示方向)依次可以包括3层:近距离业务协议层(Proximity-based Services Protocol,简称Prose Protocol)层、媒体接入控制(Media Access Control,MAC)层、物理层(PHY),在控制面中,设备之间的两个同层实 体间可以通过控制信令直接传输,如:MCPTT UE1的Prose Protocol层与MCPTT UE2的Prose Protocol层之间直接传输控制信令;因此,在本发明实施例中,步骤201中的发现消息可以作为应用层消息,包含在用户面数据中发送,也可以作为控制面信令消息发送。
当所述发现消息为应用层消息,包含在用户面数据中发送时,所述MCPTT UE发送发现消息具体可以包括:
MCPTT UE的应用层实体确定发送发现消息,向所述MCPTT UE的底层实体发送发现消息;
MCPTT UE的底层实体将所述发现消息包含在用户面数据中发送出去。
其中,发现消息用于请求使用所述MCPTT UE的用户的周围的其他一些用户或者其他通信群组中的一些用户发现所述用户,可以由使用MCPTT UE的第一用户通过MCPTT UE应用层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
当所述发现消息作为控制面信令消息发送时,所述MCPTT UE发送发现消息具体可以包括:
MCPTT UE的Prose Protocol层实体确定发现消息,将发现消息作为控制面信令消息发送出去。
其中,发现请求消息用于请求使用所述MCPTT UE的用户的周围的其他一些用户或者其他通信群组中的一些用户发现所述用户,可以由使用MCPTT UE的第一用户通过MCPTT UE的Prose Protocol层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
可选的,本发明实施例中,所述发现消息还可以包含:MCPTT UE的层二标识,MCPTT UE的层二标识为媒体接入控制层标识,如媒体接入控制层(Media Access Control,MAC)地址。
可选的,本发明实施例中,MCPTT UE可以通过广播的方式发送发现消息,以使得MCPTT系统中的除所述第一用户之外的所有用户均可接收到发现消息,和/或还可以获取与第一用户所属通信群组的组层二地址;将所述组层二地址作为目标地址,向所述目标地址发送所述发现消息,以使得组内除所述第一用户之外的所有用户均可接收到发现消息,其中,将所述组层二地址作为目标地址,向所述目标地址发送所述发现消息具体如下:
获取所述第一用户所属的第一通信群组的组层二地址;
向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
其中,所述第一通信群组的组层二地址可以为第一通信群组的媒体接入控制层标识,如MAC地址。
进一步的,为了保证发现消息传送过程中的安全性,本发明实施例中,所述第一用户的应用层标识被加密,所述发现消息还包含安全参数,所述安全参数用于使所述第一通信群组中除所述MCPTT UE之外的其他MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中使用所述MCPTT UE的第一用户的应用层标识。
可选的,本发明实施例中,当发现消息使用用户面数据传输时,MCPTT UE获取使用所述MCPTT UE的第一用户的应用层标识具体可以为:MCPTT UE的应用层实体从所述MCPTT UE数据库中获取使用所述MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
当发现消息作为控制面信令消息发送时,MCPTT UE获取使用所述MCPTT UE的第一用户的应用层标识具体可以为:MCPTT UE的Prose Protocol层实体从所述MCPTT UE的应用层实体获取使用所述MCPTT UE的第一用户的应用层标识,MCPTT UE的应用层实体从所述MCPTT UE数据库中获取使用所述MCPTT UE的 第一用户的应用层标识,其中,所述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
由上可知,本发明实施例提供一种发现方法,MCPTT UE发送包含使用所述MCPTT UE的第一用户的应用层标识。由于发现消息包含使用该MCPTT UE的第一用户的应用层标识,使得接收设备能够获知使用的MCPTT UE的用户是谁,进而可以准确地使对方识别自己,通过Prose方式进行业务通信,避免了现有现有目标用户不能识别出源用户,导致目标用户不能通过Prose方式与源用户进行业务通信的问题。
实施例三
图6示出了本发明实施例提供的一种MCPTT UE30的结构图,用于执行实施例一所述的方法,如图6所示,所述MCPTT UE30可以包括:
发送单元301,用于发送发现消息,其中,所述发现消息包含:发现目标的应用层标识信息,所述发现目标为使用所述MCPTT UE的第一用户的至少一个目标用户或至少一个通信群组。
其中,发现目标可以为使用MCPTT UE的第一用户确定发现的一些目标用户或者一些通信群组,目标用户可以为任一使用MCPTT UE获取MCPTT业务的用户,可以与使用MCPTT UE的第一用户处于同一通信群组,也可以与使用MCPTT UE的第一用户处于不同通信群组,在此不进行限定;目标用户的应用层标识信息用于标识所述目标用户,可以为第三代合作伙伴计划(英文:3rd generation partnership project,缩写:3GPP)定义的一种外部标识,如:移动用户号码(英文:Mobile Subscriber International ISDN/PSTN number,缩写:MSISDN),ISDN为综合业务数字网,是integrated service digital network的简称,PSTN为公共交换电话网络,是public switched telephone network的简称,还可以是会话发起协议的统一资源标识符(Session Initiation Protocol,Uniform resource Identity,SIP URI)。通信群组可以为MCPTT系 统中的任一通信群组,通信群组的应用层标识信息可以为通信群组的组标识,可以为应用层组标识,用于标识所述通信群组在MCPTT系统中的小组名称,例如,一消防部门中包含三个通信群组:通信群组1、通信群组2以及通信群组3,其中,通信群组1的组标识为紧急小组,通信群组2的组标识为领导小组,通信群组3的组标识为服务小组。
接收单元302,用于接收第二MCPTT UE发送的响应消息;其中,所述响应消息包含:所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识。
其中,当所述发现目标为所述至少一个目标用户时,所述第二MCPTT UE为所述至少一个目标用户中任一目标用户当前使用的MCPTT UE;当所述发现目标为所述至少一个通信群组时,所述第二MCPTT UE为所述至少一个通信群组中任一通信群组中的用户当前使用的MCPTT UE。
在MCPTT系统下,不同MCPTT UE之间可以使用无连接态的一对多(one-to-many)的方式直接通信,建立用户面通道进行业务通信,也可以通过控制面相互传输消息,其中,用户面如图3所示从上到下(图3中箭头所示方向)依次包括六层:应用层(Application)、互联网协议(Internet Protocol Address,IP)地址解析协议(Address Resolution Protocol,ARP)层、分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)、无线链路控制(Radio Link Control,RLC)层、媒体接入控制(Media Access Control,MAC)、物理层(Physical,PHY),应用层可称为高层,应用层以下的一个或多个层均可称为底层,通常情况下,在用户面中,应用层的控制面消息或者数据对于底层来说,都是作为载荷包含在数据包:应用层发起消息之后,将消息传送给底层,由底层进行相应处理(如封装、转发)后,发送至对端设备的底层,再由对端设备的底层进行相应处理(如接收、拆封)后将消息传送给应用层;控制面如图4所示从上到下(图4中箭头所示方向)依次可以 包括3层:近距离业务协议层(Proximity-based Services Protocol,简称Prose Protocol)层、媒体接入控制(Media Access Control,MAC)层、物理层(PHY);因此,在本发明实施例中,发现消息也可以作为应用层消息,包含在用户面数据中发送,也可以作为控制面信令消息发送。
当所述发现消息为应用层消息,包含在用户面数据中发送时,所述发送单元301具体用于:
在所述MCPTT UE的应用层实体确定发送发现消息时,向所述MCPTT UE的底层实体发送发现消息,以使得MCPTT UE的底层实体将所述发现消息包含在用户面数据中发送出去。
其中,发现消息用于请求发现用户周围的其他一些用户或者其他通信群组中的一些用户,可以由使用MCPTT UE的第一用户通过MCPTT UE应用层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
当所述发现消息作为控制面信令消息发送时,所述发送单元具体用于:
在MCPTT UE的Prose Protocol层实体确定发送发现消息后,将发现消息作为控制面信令消息发送出去。
其中,发现消息用于请求发现用户周围的其他一些用户或者其他通信群组中的一些用户,可以由使用MCPTT UE的第一用户通过MCPTT UE的Prose Protocol层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
可选的,本发明实施例中,所述发现消息还可以包含:所述MCPTT UE的层二标识、使用所述MCPTT UE的用户的应用层标识,所述MCPTT UE的层二标识可以媒体接入控制层标识,如媒体接入控制层地址(Media Access Control,MAC)。
进一步的,本发明实施例中,发送单元301,可以通过广播的 方式发送发现消息,以使得MCPTT系统中的任一个发现目标均可接收到发现消息,和/或可以获取通信群组的组层二地址,将所述组层二地址作为目标地址发送发现消息,以使得所述通信群组内除所述第一用户之外的所有用户均可以接收到发现消息,其中,发送单元301将所述组层二地址作为目标地址发送发现消息的实现方式具体如下:
当所述发现目标为所述至少一个目标用户,且所述至少一个目标用户中存在一个目标用户与使用所述第一用户处于第一通信群组时,如图3A所示,所述MCPTT UE还可以包含:
获取单元303,用于获取所述第一通信群组的组层二地址;
所述发送单元301,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
当所述发现目标为所述至少一个通信群组,且所述第一用户处于所述至少一个通信群组中的第二通信群组时,
所述获取单元303,具体用于获取所述第二通信群组的组层二地址;
所述发送单元301,具体用于向所述组层二地址发送所述发现消息,以使得所述第二通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
其中,组层二地址可以为通信群组的媒体接入控制层标识,如MAC地址,用于标识目标通信群组。
进一步的,本发明实施例中,接收单元302,可以用于接收至少一个第二MCPTT UE通过一对一(one-to-one)方式发送的响应消息;还可以用于接收至少一个第二MCPTT UE通过一对多(one-to-many)方式发送的响应消息。
进一步的,为了保证发现消息传送过程中的安全性,所述发现目标的应用层标识信息可以为加密信息,所述发现消息还可以包含安全参数,所述安全参数用于使所述第二MCPTT UE根据所述安 全参数确定相应的安全信息后,获取所述发现消息中发现目标的应用层标识并返回响应消息;优选的,所述安全参数可以为密钥标识。
进一步的,所述获取单元303,还用于在所述发送单元301发送发现消息之前,获取使用所述MCPTT UE的第一用户的应用层标识。
其中,可选的,当发现消息为应用层消息,包含在用户面数据中时,所述获取单元303可以位于MCPTT UE的应用层实体内,所述获取单元303获取使用所述MCPTT UE的第一用户的应用层标识具体可以为:从所述MCPTT UE数据库中获取使用所述MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
当发现消息为控制面信令消息时,所述获取单元303可以位于MCPTT UE的Prose Protocol层实体内,所述获取单元303获取使用所述MCPTT UE的第一用户的应用层标识具体可以为:从所述MCPTT UE的应用层实体获取使用所述MCPTT UE的第一用户的应用层标识,MCPTT UE的应用层实体从所述MCPTT UE数据库中获取使用所述MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
由上可知,本发明实施例提供一种MCPTT UE,发送包含发现目标的标识信息的发现消息,接收至少一个第二MCPTT UE发送的包含所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识的响应消息。由于响应消息包含MCPTT UE的层二标识以及使用该MCPTT UE的用户的应用层标识,使得发送端不仅能够确定对方使用的MCPTT UE的层二标识,而且还可以确定使用该MCPTT UE的用户是谁,进而可以准确地识别对方,通过Prose方式进行业务通信,避免了现有源用户不能根据所述目标用户返回的响应消息识别出目标用户,导致源用户不能通过Prose方式与目标用户进行业务通信的问题。
实施例四
图7示出了本发明实施例提供的一种MCPTT UE40的结构图,应用于实施例二所述的方法,如图7所示,所述MCPTT UE40可以包括:
获取单元401,用于获取使用所述MCPTT UE的第一用户的应用层标识。
其中,用户的应用层标识用于标识所述用户,可以为第三代合作伙伴计划(英文:3rd generation partnership project,缩写:3GPP)定义的一种外部标识,如:移动用户号码(英文:Mobile Subscriber International ISDN/PSTN number,缩写:MSISDN),ISDN为综合业务数字网,是integrated service digital network的简称,PSTN为公共交换电话网络,是public switched telephone network的简称;还可以为会话发起协议的统一资源标识符(Session Initiation Protocol,Uniform resource Identity,SIP URI)。
发送单元402,用于在所述获取单元401获取使用所述MCPTT UE的用户的应用层标识后,发送发现消息,其中,所述发现消息包含:包含所述使用所述MCPTT UE的第一用户的应用层标识。
在MCPTT系统下,不同MCPTT UE之间可以使用无连接态的一对多(one-to-many)的方式直接通信,建立用户面通道进行业务通信,也可以通过控制面相互传输消息,其中,用户面如图3所示从上到下(图3中箭头所示方向)依次包括六层:应用层(Application)、互联网协议(Internet Protocol Address,IP)地址解析协议(Address Resolution Protocol,ARP)层、分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)、无线链路控制(Radio Link Control,RLC)层、媒体接入控制(Media Access Control,MAC)、物理层(Physical,PHY),应用层可称为高层,应用层以下的一个或多个层均可称为底层,通常情况下,在用户面中,应用层的控制面消息或者数据对于底层来说,都是作为载荷包含在数据包中。应用层发起消息之后,将消息传送给底层,由底层 进行相应处理(如封装、转发)后,发送至对端设备的底层,再由对端设备的底层进行相应处理(如接收、拆封)后将消息传送给应用层;控制面如图4所示从上到下(图4中箭头所示方向)依次可以包括3层:近距离业务协议层(Proximity-based Services Protocol,简称Prose Protocol)层、媒体接入控制(Media Access Control,MAC)层、物理层(PHY);因此,在本发明实施例中,发现消息可以作为应用层消息,包含在用户面数据中发送,也可以作为控制面信令消息发送。
当所述发现消息为应用层消息,包含在用户面数据中发送时,所述发送单元402具体可以用于:
在MCPTT UE的应用层实体确定发送发现消息后,向所述MCPTT UE的底层实体发送发现消息,以使得MCPTT UE的底层实体将所述发现消息包含在用户面数据中发送出去。
其中,发现消息用于请求使用所述MCPTT UE的用户的周围的其他一些用户或者其他通信群组中的一些用户发现所述用户,可以由使用MCPTT UE的第一用户通过MCPTT UE应用层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
当所述发现消息作为控制面信令消息发送时,所述发送单元402具体可以用于:
在MCPTT UE的Prose Protocol层实体确定发现消息后,将发现消息作为控制面信令消息发送出去。
其中,发现请求消息用于请求使用所述MCPTT UE的用户的周围的其他一些用户或者其他通信群组中的一些用户发现所述用户,可以由使用MCPTT UE的第一用户通过MCPTT UE的Prose Protocol层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
相对应的,当发现消息使用用户面数据传输时,获取单元401 位于MCPTT UE的应用层实体内,所述获取单元401获取使用所述MCPTT UE的第一用户的应用层标识具体可以为:从所述MCPTT UE数据库中获取使用所述MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
当发现消息作为控制面信令消息发送时,MCPTT UE获取使用所述MCPTT UE的第一用户的应用层标识具体可以为:从所述MCPTT UE的应用层实体获取使用所述MCPTT UE的第一用户的应用层标识,MCPTT UE的应用层实体从所述MCPTT UE数据库中获取使用所述MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
进一步的,本发明实施例中,所述发现消息还可以包含:MCPTT UE的层二标识,MCPTT UE的层二标识为媒体接入控制层标识,如媒体接入控制层(Media Access Control,MAC)地址。
进一步的,本发明实施例中,所述发送单元402,具体可以用于通过广播的方式发送发现消息,以使得MCPTT系统中所有用户均可接收到发现消息,和/或还可以获取与第一用户所属通信群组的组层二地址;将所述组层二地址作为目标地址,向所述目标地址发送所述发现消息,以使得组内的所有用户均可接收到发现消息,其中,其中,发送单元402将所述组层二地址作为目标地址,向所述目标地址发送所述发现消息具体如下:
所述获取单元401,还用于获取所述第一用户所属的第一通信群组的组层二地址;
所述发送单元402,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
其中,所述第一通信群组的组层二地址可以为第一通信群组的媒体接入控制层标识,如MAC地址。
进一步的,为了保证发现消息传送过程中的安全性,所述第一用户的应用层标识被加密,所述发现消息还包含安全参数,所述安全参数用于使所述第一通信群组中除所述MCPTT UE之外的其他MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中使用所述MCPTT UE的第一用户的应用层标识。
由上可知,本发明实施例提供一种MCPTT UE,发送包含使用所述MCPTT UE的第一用户的应用层标识。由于发现消息包含使用该MCPTT UE的第一用户的应用层标识,使得接收设备能够获知使用的MCPTT UE的用户是谁,进而可以准确地使对方识别自己,通过Prose方式进行业务通信,避免了现有现有目标用户不能识别出源用户,导致目标用户不能通过Prose方式与源用户进行业务通信的问题。
实施例五
图8示出了本发明实施例提供的一种MCPTT UE50的结构图,用于执行实施例一所述的方法,如图8所示,所述MCPTT UE50可以包括:通信单元501,处理器502、存储器503、至少一个通信总线504,用于实现这些设备之间的连接和相互通信;
通信单元501,用于与外部网元之间进行数据传输。
处理器502可能是一个中央处理器(英文:central processing unit,简称为CPU)。
存储器503,可以是易失性存储器(英文:volatile memory),例如随机存取存储器(英文:random-access memory,缩写:RAM);或者非易失性存储器(英文:non-volatile memory),例如只读存储器(英文:read-only memory,缩写:ROM),快闪存储器(英文:flash memory),硬盘(英文:hard disk drive,缩写:HDD)或固态硬盘(英文:solid-state drive,缩写:SSD);或者上述种类的存储器的组合,并向处理器502提供指令和数据。
通信单元501,用于发送发现消息,其中,所述发现消息包含:发现目标的应用层标识信息,所述发现目标为使用所述MCPTT UE 的第一用户的至少一个目标用户或至少一个通信群组。
以及,接收第二MCPTT UE发送的响应消息;其中,所述响应消息包含:所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识。
其中,发现目标可以为使用MCPTT UE的第一用户确定发现的一些目标用户或者一些通信群组,目标用户可以为任一使用MCPTT UE获取MCPTT业务的用户,可以与使用MCPTT UE的第一用户处于同一通信群组,也可以与使用MCPTT UE的第一用户处于不同通信群组,在此不进行限定;目标用户的应用层标识信息用于标识所述目标用户,可以为第三代合作伙伴计划(英文:3rd generation partnership project,缩写:3GPP)定义的一种外部标识,如:移动用户号码(英文:Mobile Subscriber International ISDN/PSTN number,缩写:MSISDN),ISDN为综合业务数字网,是integrated service digital network的简称,PSTN为公共交换电话网络,是public switched telephone network的简称,还可以是会话发起协议的统一资源标识符(Session Initiation Protocol,Uniform resource Identity,SIP URI)。通信群组可以为MCPTT系统中的任一通信群组,通信群组的应用层标识信息可以为通信群组的组标识,可以为应用层组标识,用于标识所述通信群组在MCPTT系统中的小组名称,例如,一消防部门中包含三个通信群组:通信群组1、通信群组2以及通信群组3,其中,通信群组1的组标识为紧急小组,通信群组2的组标识为领导小组,通信群组3的组标识为服务小组。
其中,当所述发现目标为所述至少一个目标用户时,所述第二MCPTT UE为所述至少一个目标用户中任一目标用户当前使用的MCPTT UE;当所述发现目标为所述至少一个通信群组时,所述第二MCPTT UE为所述至少一个通信群组中任一通信群组中的用户当前使用的MCPTT UE。
在MCPTT系统下,不同MCPTT UE之间可以使用无连接态 的一对多(one-to-many)的方式直接通信,建立用户面通道进行业务通信,也可以通过控制面相互传输消息,其中,用户面如图3所示从上到下(图3中箭头所示方向)依次包括六层:应用层(Application)、互联网协议(Internet Protocol Address,IP)地址解析协议(Address Resolution Protocol,ARP)层、分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)、无线链路控制(Radio Link Control,RLC)层、媒体接入控制(Media Access Control,MAC)、物理层(Physical,PHY),应用层可称为高层,应用层以下的一个或多个层均可称为底层,通常情况下,在用户面中,应用层的控制面消息或者数据对于底层来说,都是作为载荷包含在数据包:应用层发起消息之后,将消息传送给底层,由底层进行相应处理(如封装、转发)后,发送至对端设备的底层,再由对端设备的底层进行相应处理(如接收、拆封)后将消息传送给应用层;控制面如图4所示从上到下(图4中箭头所示方向)依次可以包括3层:近距离业务协议层(Proximity-based Services Protocol,简称Prose Protocol)层、媒体接入控制(Media Access Control,MAC)层、物理层(PHY);因此,在本发明实施例中,发现消息也可以作为应用层消息,包含在用户面数据中发送,也可以作为控制面信令消息发送。
当所述发现消息为应用层消息,包含在用户面数据中发送时,所述通信单元501具体用于:
在所述MCPTT UE的应用层实体确定发送发现消息时,向所述MCPTT UE的底层实体发送发现消息,以使得MCPTT UE的底层实体将所述发现消息包含在用户面数据中发送出去。
其中,发现消息用于请求发现用户周围的其他一些用户或者其他通信群组中的一些用户,可以由使用MCPTT UE的第一用户通过MCPTT UE应用层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
当所述发现消息作为控制面信令消息发送时,所述发送单元具体用于:
在MCPTT UE的Prose Protocol层实体确定发送发现消息后,将发现消息作为控制面信令消息发送出去。
其中,发现消息用于请求发现用户周围的其他一些用户或者其他通信群组中的一些用户,可以由使用MCPTT UE的第一用户通过MCPTT UE的Prose Protocol层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
可选的,本发明实施例中,所述发现消息还可以包含:所述MCPTT UE的层二标识、使用所述MCPTT UE的用户的应用层标识,所述MCPTT UE的层二标识可以媒体接入控制层标识,如媒体接入控制层地址(Media Access Control,MAC)。
进一步的,本发明实施例中,通信单元501,可以通过广播的方式发送发现消息,以使得MCPTT系统中的任一个发现目标均可接收到发现消息,和/或可以获取通信群组的组层二地址,将所述组层二地址作为目标地址发送发现消息,以使得所述通信群组内的所有用户均可以接收到发现消息,其中,通信单元501将所述组层二地址作为目标地址发送发现消息的实现方式具体如下:
当所述发现目标为所述至少一个目标用户,且所述至少一个目标用户中存在一个目标用户与使用所述第一用户处于第一通信群组时,所述处理器502,用于获取所述第一通信群组的组层二地址;
所述通信单元501,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
当所述发现目标为所述至少一个通信群组,且所述第一用户处于所述至少一个通信群组中的第二通信群组时,
所述处理器502,具体用于获取所述第二通信群组的组层二地址;
所述通信单元501,具体用于向所述组层二地址发送所述发现消息,以使得所述第二通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
其中,组层二地址可以为通信群组的媒体接入控制层标识,如MAC地址,用于标识目标通信群组。
进一步的,本发明实施例中,通信单元501,可以用于接收至少一个第二MCPTT UE通过一对一(one-to-one)方式发送的响应消息;还可以用于接收至少一个第二MCPTT UE通过一对多(one-to-many)方式发送的响应消息。
进一步的,为了保证发现消息传送过程中的安全性,所述发现目标的应用层标识信息可以为加密信息,所述发现消息还可以包含安全参数,所述安全参数用于使所述第二MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中发现目标的应用层标识并返回响应消息;优选的,所述安全参数可以为密钥标识。
进一步的,所述处理器502,还用于在所述通信单元501发送发现消息之前,获取使用所述MCPTT UE的第一用户的应用层标识。
其中,可选的,当发现消息为应用层消息,包含在用户面数据中时,所述处理器502可以位于MCPTT UE的应用层实体内,所述处理器502获取使用所述MCPTT UE的第一用户的应用层标识具体可以为:从所述MCPTT UE数据库中获取使用所述MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
当发现消息为控制面信令消息时,所述处理器502可以位于MCPTT UE的Prose Protocol层实体内,所述处理器502获取使用所述MCPTT UE的第一用户的应用层标识具体可以为:从所述MCPTT UE的应用层实体获取使用所述MCPTT UE的第一用户的应用层标识,MCPTT UE的应用层实体从所述MCPTT UE数据库中获取使用所述MCPTT UE的第一用户的应用层标识,其中,所 述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
由上可知,本发明实施例提供一种MCPTT UE,发送包含发现目标的标识信息的发现消息,接收至少一个第二MCPTT UE发送的包含所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识的响应消息。由于响应消息包含MCPTT UE的层二标识以及使用该MCPTT UE的用户的应用层标识,使得发送端不仅能够确定对方使用的MCPTT UE的层二标识,而且还可以确定使用该MCPTT UE的用户是谁,进而可以准确地识别对方,通过Prose方式进行业务通信,避免了现有源用户不能根据所述目标用户返回的响应消息识别出目标用户,导致源用户不能通过Prose方式与目标用户进行业务通信的问题。
实施例六
图9示出了本发明实施例提供的一种MCPTT UE60的结构图,应用于实施例二所述的方法,如图9所示,所述MCPTT UE60可以包括:通信单元601,处理器602、存储器603、至少一个通信总线604,用于实现这些设备之间的连接和相互通信;
通信单元601,用于与外部网元之间进行数据传输。
处理器602可能是一个中央处理器(英文:central processing unit,简称为CPU)。
存储器603,可以是易失性存储器(英文:volatile memory),例如随机存取存储器(英文:random-access memory,缩写:RAM);或者非易失性存储器(英文:non-volatile memory),例如只读存储器(英文:read-only memory,缩写:ROM),快闪存储器(英文:flash memory),硬盘(英文:hard disk drive,缩写:HDD)或固态硬盘(英文:solid-state drive,缩写:SSD);或者上述种类的存储器的组合,并向处理器602提供指令和数据。
处理器602,用于获取使用所述MCPTT UE的第一用户的应用层标识。
其中,用户的应用层标识用于标识所述用户,可以为第三代合作伙伴计划(英文:3rd generation partnership project,缩写:3GPP)定义的一种外部标识,如:移动用户号码(英文:Mobile Subscriber International ISDN/PSTN number,缩写:MSISDN),ISDN为综合业务数字网,是integrated service digital network的简称,PSTN为公共交换电话网络,是public switched telephone network的简称;还可以为会话发起协议的统一资源标识符(Session Initiation Protocol,Uniform resource Identity,SIP URI)。
通信单元601,用于在所述处理器602获取使用所述MCPTTUE的用户的应用层标识后,发送发现消息,其中,所述发现消息包含:包含所述使用所述MCPTT UE的第一用户的应用层标识。
在MCPTT系统下,不同MCPTT UE之间可以使用无连接态的一对多(one-to-many)的方式直接通信,建立用户面通道进行业务通信,也可以通过控制面相互传输消息,其中,用户面如图3所示从上到下(图3中箭头所示方向)依次包括六层:应用层(Application)、互联网协议(Internet Protocol Address,IP)地址解析协议(Address Resolution Protocol,ARP)层、分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)、无线链路控制(Radio Link Control,RLC)层、媒体接入控制(Media Access Control,MAC)、物理层(Physical,PHY),应用层可称为高层,应用层以下的一个或多个层均可称为底层,通常情况下,在用户面中,应用层的控制面消息或者数据对于底层来说,都是作为载荷包含在数据包中。应用层发起消息之后,将消息传送给底层,由底层进行相应处理(如封装、转发)后,发送至对端设备的底层,再由对端设备的底层进行相应处理(如接收、拆封)后将消息传送给应用层;控制面如图4所示从上到下(图4中箭头所示方向)依次可以包括3层:近距离业务协议层(Proximity-based Services Protocol,简称Prose Protocol)层、媒体接入控制(Media Access Control,MAC)层、物理层(PHY);因此,在本发明实施例中, 发现消息可以作为应用层消息,包含在用户面数据中发送,也可以作为控制面信令消息发送。
当所述发现消息为应用层消息,包含在用户面数据中发送时,所述通信单元601具体可以用于:
在MCPTT UE的应用层实体确定发送发现消息后,向所述MCPTT UE的底层实体发送发现消息,以使得MCPTT UE的底层实体将所述发现消息包含在用户面数据中发送出去。
其中,发现消息用于请求使用所述MCPTT UE的用户的周围的其他一些用户或者其他通信群组中的一些用户发现所述用户,可以由使用MCPTT UE的第一用户通过MCPTT UE应用层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
当所述发现消息作为控制面信令消息发送时,所述通信单元601具体可以用于:
在MCPTT UE的Prose Protocol层实体确定发现消息后,将发现消息作为控制面信令消息发送出去。
其中,发现请求消息用于请求使用所述MCPTT UE的用户的周围的其他一些用户或者其他通信群组中的一些用户发现所述用户,可以由使用MCPTT UE的第一用户通过MCPTT UE的Prose Protocol层实体上的触发按钮触发发送所述发现消息,也可以由第一用户通过其他方式触发MCPTT UE发送发现消息,本发明对此不进行限定。
相对应的,当发现消息使用用户面数据传输时,处理器602位于MCPTT UE的应用层实体内,所述处理器602获取使用所述MCPTT UE的第一用户的应用层标识具体可以为:从所述MCPTT UE数据库中获取使用所述MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
当发现消息作为控制面信令消息发送时,MCPTT UE获取使 用所述MCPTT UE的第一用户的应用层标识具体可以为:从所述MCPTT UE的应用层实体获取使用所述MCPTT UE的第一用户的应用层标识,MCPTT UE的应用层实体从所述MCPTT UE数据库中获取使用所述MCPTT UE的第一用户的应用层标识,其中,所述数据库预先存储有使用所述MCPTT UE的用户以及用户的应用层标识的对应关系。
进一步的,本发明实施例中,所述发现消息还可以包含:MCPTT UE的层二标识,MCPTT UE的层二标识为媒体接入控制层标识,如媒体接入控制层(Media Access Control,MAC)地址。
进一步的,本发明实施例中,所述通信单元601,具体可以用于通过广播的方式发送发现消息,以使得MCPTT系统中所有用户均可接收到发现消息,和/或还可以获取与第一用户所属通信群组的组层二地址;将所述组层二地址作为目标地址,向所述目标地址发送所述发现消息,以使得组内所有用户均可接收到发现消息,其中,其中,通信单元601将所述组层二地址作为目标地址,向所述目标地址发送所述发现消息具体如下:
所述处理器602,还用于获取所述第一用户所属的第一通信群组的组层二地址;
所述通信单元601,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
其中,所述第一通信群组的组层二地址可以为第一通信群组的媒体接入控制层标识,如MAC地址。
进一步的,为了保证发现消息传送过程中的安全性,所述第一用户的应用层标识被加密,所述发现消息还包含安全参数,所述安全参数用于使所述第一通信群组中除所述MCPTT UE之外的其他MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中使用所述MCPTT UE的第一用户的应用层标识。
由上可知,本发明实施例提供一种MCPTT UE,发送包含使 用所述MCPTT UE的第一用户的应用层标识。由于发现消息包含使用该MCPTT UE的第一用户的应用层标识,使得接收设备能够获知使用的MCPTT UE的用户是谁,进而可以准确地使对方识别自己,通过Prose方式进行业务通信,避免了现有现有目标用户不能识别出源用户,导致目标用户不能通过Prose方式与源用户进行业务通信的问题。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的单元和系统的具体工作过程,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,设备和方法,可以通过其它的方式实现。例如,以上所描述的设备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。另一点,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,可以是电性,机械或其它的形式。
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包括,也可以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,也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元,可以存储在一个计算机可读取存储介质中。上述软件功能单元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(Read-Only Memory,简称ROM)、随机存取存储器(Random Access Memory,简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件(例如处理器)来完成,该程序可以存储于一计算机可读存储介质中,存储介质可以包括:只读存储器、随机存储器、磁盘或光盘等。
最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (30)

  1. 一种发现方法,应用于第一关键任务即按即说MCPTT用户设备UE,其特征在于,所述方法包括:
    发送发现消息,所述发现消息包含:发现目标的应用层标识信息,所述发现目标为使用所述第一MCPTT UE的第一用户的至少一个目标用户或至少一个通信群组;
    接收第MCPTT UE发送的响应消息,所述响应消息包含:所述第MCPTT UE的层二标识以及使用所述第MCPTT UE的用户的应用层标识;
    其中,当所述发现目标为所述至少一个目标用户时,所述第二MCPTT UE为所述至少一个目标用户中任一目标用户当前使用的MCPTT UE;当所述发现目标为所述至少一个通信群组时,所述第二MCPTT UE为所述至少一个通信群组中任一通信群组中的用户当前使用的MCPTT UE。
  2. 根据权利要求1所述的发现方法,其特征在于,所述发现消息为应用层消息。
  3. 根据权利要求2所述的发现方法,其特征在于,所述发现消息包含在所述第一MCPTT UE的用户面数据中。
  4. 根据权利要求1所述的发现方法,其特征在于,所述发现消息为所述第一MCPTT UE的控制面信令消息。
  5. 根据权利要求1-4任一项所述的发现方法,其特征在于,所述发现目标的应用层标识信息为加密信息,所述发现消息还包含安全参数,所述安全参数用于使所述第MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中发现目标的应用层标识并返回响应消息。
  6. 根据权利要求1-5任一项所述的发现方法,其特征在于,当所述发现目标为所述至少一个目标用户,且所述至少一个目标用户中存在一个目标用户与使用所述第一用户处于第一通信群组时,所述发送发现消息包括:
    获取所述第一通信群组的组层二地址;
    向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
  7. 根据权利要求1-5任一项所述的发现方法,其特征在于,当所述发现目标为所述至少一个通信群组,且所述第一用户处于所述至少一个通信群组中的第二通信群组时,所述发送发现消息包括:
    获取所述第二通信群组的组层二地址;
    向所述组层二地址发送所述发现消息,以使得所述第二通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
  8. 根据权利要求1-7任一项所述的发现方法,其特征在于,所述发现消息还包含:
    所述第一MCPTT UE的层二标识和使用所述第一MCPTT UE的用户的应用层标识。
  9. 一种发现方法,应用于关键任务即按即说MCPTT用户设备UE,其特征在于,所述方法包括:
    获取使用所述MCPTT UE的第一用户的应用层标识;
    发送发现消息,其中,所述发现消息包含所述使用所述MCPTT UE的第一用户的应用层标识。
  10. 根据权利要求9所述的发现方法,其特征在于,所述发现消息为应用层消息。
  11. 根据权利要求10所述的发现方法,其特征在于,所述发现消息包含在所述MCPTT UE的用户面数据中。
  12. 根据权利要求9所述的发现方法,其特征在于,所述发现消息为所述MCPTT UE的控制面信令消息。
  13. 根据权利要求9-12任一项所述的发现方法,其特征在于,所述发送发现消息包括:
    获取所述第一用户所属的第一通信群组的组层二地址;
    向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
  14. 根据权利要求9-13任一项所述的发现方法,其特征在于,所述第一用户的应用层标识被加密,所述发现消息还包含安全参数,所述安全参数用于使所述第一通信群组中除所述MCPTT UE之外的其他MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中使用所述MCPTT UE的第一用户的应用层标识。
  15. 根据权利要求9-14任一项所述的发现方法,其特征在于,所述发现消息还包含:
    所述MCPTT UE的层二标识。
  16. 一种关键任务即按即说用户设备MCPTT UE,其特征在于,包括:
    发送单元,用于发送发现消息,所述发现消息包含:发现目标的应用层标识信息,所述发现目标为使用所述第一MCPTT UE的第一用户的至少一个目标用户或至少一个通信群组;
    接收单元,用于接收第二MCPTT UE发送的响应消息,所述响应消息包含:所述第二MCPTT UE的层二标识以及使用所述第二MCPTT UE的用户的应用层标识;
    其中,当所述发现目标为所述至少一个目标用户时,所述第二MCPTT UE为所述至少一个目标用户中任一目标用户当前使用的MCPTT UE;当所述发现目标为所述至少一个通信群组时,所述第二MCPTT UE为所述至少一个通信群组中任一通信群组中的用户当前使用的MCPTT UE。
  17. 根据权利要求16所述的MCPTT UE,其特征在于,所述发现消息为应用层消息。
  18. 根据权利要求17所述的MCPTT UE,其特征在于,所述发现消息包含在所述MCPTT UE的用户面数据中。
  19. 根据权利要求17所述的MCPTT UE,其特征在于,所述发现消息为所述MCPTT UE的控制面信令消息。
  20. 根据权利要求16-19任一项所述的MCPTT UE,其特征在于,所述发现目标的应用层标识信息为加密信息,所述发现消息还包含安 全参数,所述安全参数用于使所述第二MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中发现目标的应用层标识并返回响应消息。
  21. 根据权利要求16-20任一项所述的MCPTT UE,其特征在于,当所述发现目标为所述至少一个目标用户,且所述至少一个目标用户中存在一个目标用户与所述第一用户处于第一通信群组时,所述MCPTT UE还包括:
    获取单元,用于获取所述第一通信群组的组层二地址;
    所述发送单元,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
  22. 根据权利要求16-20任一项所述的MCPTT UE,其特征在于,当所述发现目标为所述至少一个通信群组,且所述第一用户处于所述至少一个通信群组中的第二通信群组时,所述MCPTT UE还包括:
    获取单元,用于获取所述第二通信群组的组层二地址;
    所述发送单元,具体用于向所述组层二地址发送所述发现消息,以使得所述第二通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
  23. 根据权利要求16-22任一项所述的MCPTT UE,其特征在于,所述发现消息还包含:
    所述MCPTT UE的层二标识和使用所述MCPTT UE的用户的应用层标识。
  24. 一种MCPTT UE,其特征在于,包括:
    获取单元,用于获取使用所述MCPTT UE的第一用户的应用层标识;
    发送单元,用于发送发现消息,其中,所述发现消息包含所述使用所述MCPTT UE的第一用户的应用层标识。
  25. 根据权利要求24所述的MCPTT UE,其特征在于,所述发现消息为应用层消息。
  26. 根据权利要求25所述的MCPTT UE,其特征在于,所述发现消息包含在所述MCPTT UE的用户面数据中。
  27. 根据权利要求24所述的MCPTT UE,其特征在于,所述发现消息为所述MCPTT UE的控制面信令消息。
  28. 根据权利要求24-27任一项所述的MCPTT UE,其特征在于,
    所述获取单元,还用于获取所述第一用户所属的第一通信群组的组层二地址;
    所述发送单元,具体用于向所述组层二地址发送所述发现消息,以使得所述第一通信群组内除所述第一用户之外的所有用户接收到所述发现消息。
  29. 根据权利要求24-28任一项所述的MCPTT UE,其特征在于,所述第一用户的应用层标识被加密,所述发现消息还包含安全参数,所述安全参数用于使所述第一通信群组中除所述MCPTT UE之外的其他MCPTT UE根据所述安全参数确定相应的安全信息后,获取所述发现消息中使用所述MCPTT UE的第一用户的应用层标识。
  30. 根据权利要求24-29任一项所述的MCPTT UE,其特征在于,所述发现消息还包含:
    所述MCPTT UE的层二标识。
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