CN110072214A - Using the method and device of discovery in a kind of device-to-device D2D communication - Google Patents
Using the method and device of discovery in a kind of device-to-device D2D communication Download PDFInfo
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- CN110072214A CN110072214A CN201711052303.8A CN201711052303A CN110072214A CN 110072214 A CN110072214 A CN 110072214A CN 201711052303 A CN201711052303 A CN 201711052303A CN 110072214 A CN110072214 A CN 110072214A
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- mobile device
- identification number
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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Abstract
The invention discloses the method and devices in a kind of D2D communication using discovery, this method accesses Centralized Controller and receives the D2D communications applications discovery request message that mobile device is sent, the mobile device identification number of mobile device is determined according to the device number of the mobile device, according to the position of application identities number and mobile device, determine the mobile device identification number of the first equipment, and generate the mobile device identification number of mobile device, the mobile device identification number of first equipment and the corresponding relationship of application identities number, finally to the Cell Broadcast CB application discovery broadcast message where mobile device.The corresponding relationship of the mobile device identification number of mobile device, the mobile device identification number of the first equipment and application identities number that access Centralized Controller is determined can make mobile device actively discover with same application and can carry out the mobile device of D2D communication, so as to voluntarily initiate D2D communication, D2D connection is established without base station or access Centralized Controller.
Description
Technical field
The present embodiments relate to wireless communication technology field more particularly to a kind of device-to-device (Device-to-
Device, D2D) communication in using discovery method and device.
Background technique
5G communication system proposes realization target to availability of frequency spectrum promotion, low delay, promotion user experience rate etc.,
The D2D communication technology is a kind of equipment room direct communication technology, and the communication of equipment room is realized on the basis of the support of mobile system.
D2D communication effectively can sow discord direct channels using low coverage and be communicated, thus the user experience rate between lifting means and
End-to-end time delay is reduced, and base station data amount can be shunted and promote overall spectrum utilization efficiency.The current D2D communication technology is also
In development process, for example, D2D discovery technique, how to distribute frequency spectrum resource with reduce Communication Jamming, D2D communication switching ask
Topic etc. all also in research and improve during.Since D2D communicates the main equipment direct communication for realizing short distance, equipment is direct
Communication first has to the plant issue for solving how to find to carry out direct communication, and direct communication is by specific between initiating equipment
Application drive, not all equipment requires to carry out direct communication.
Relevant scheme is the scheme of the foundation of D2D session.In System Architecture Evolution (System Architecture
Evolution, SAE) in framework, Serving PDN Gateway knows terminal global ip address, it can monitor D2D data flow,
Because gateway will handle the IP head and tunnel mark of each data, each user equipment (User is known
Equipment, UE) under the control of which base station (eNodeB).The source and destination that certain data packet is found when it are same
When within the scope of a eNodeB or within the scope of adjacent eNodeB, that is, thinks that they are possible D2D data flows, carry out again later
Channel measurement between UE can establish D2D connection under eNodeB control when channel quality is good enough.
Even if D2D successful connection is set up, eNodeB is still responsible for honeycomb and the resource allocation of D2D, which can be after
The connection with internet is held in continuation of insurance.By monitoring the IP traffic at a distance of nearlyr equipment, Lai Jianli D2D connection, user is not needed
A D2D session request is specifically initiated, will automatically be selected in cellular connection is connected with D2D by network.
In current D2D scheme, equipment not active D2D communicate ability of discovery, be passively by analysis data packet
Address close on situation to discover whether to exist, so that the direct communication of equipment room is established in control.
Summary of the invention
The embodiment of the present invention provides the method and device in a kind of D2D communication using discovery, to realize mobile device master
It is dynamic to initiate D2D communication.
Using the method for discovery in a kind of D2D communication provided in an embodiment of the present invention, comprising:
It accesses Centralized Controller and receives the D2D communications applications discovery request message that mobile device is sent, the D2D communication is answered
It include device number, the application identities number of the mobile device with discovery request message；
The access Centralized Controller determines the mobile device of the mobile device according to the device number of the mobile device
Identification number；
The access Centralized Controller determines described first according to the position of the application identities number and the mobile device
The device id of equipment, and generate the device id of the mobile device identification number of the mobile device, first equipment
With the corresponding relationship of the application identities number；
Cell Broadcast CB application discovery broadcast message where access from the Centralized Controller to the mobile device, it is described to answer
It include the mobile device identification number of the mobile device, the device id of first equipment and described with discovery broadcast message
The corresponding relationship of application identities number.
Optionally, the access Centralized Controller finds request in the D2D communications applications for receiving the mobile device transmission
Before message, further includes:
The access Centralized Controller establishes discovery information list, device id allocation table and control layer discovery application column
Table；
The access Centralized Controller determines the mobile device of the mobile device according to the device number of the mobile device
Identification number, comprising:
The access Centralized Controller judges whether to store the mobile device according to the device number of the mobile device
Mobile device identification number；If so, determining the mobile device identification number of the mobile device；If it is not, then being set for the movement
Back-up matches the mobile device identification number of the mobile device, and the device identification is written in the device id of the mobile device
Number allocation table, extracts the Base Station Identification number of the mobile device own base station and the location identification number of the mobile device, by institute
It states Base Station Identification number and the discovery information list is written in the location identification number.
Optionally, the access Centralized Controller is in the mobile device mark for distributing the mobile device for the mobile device
After knowledge number, further includes:
The mobile device identification number of the mobile device is sent to the mobile device by the access Centralized Controller.
Optionally, the access Centralized Controller is in the mobile device identification number for generating the mobile device, described first
After the device id of equipment and the corresponding relationship of the application identities number, further includes:
The access Centralized Controller sets the mobile device identification number of the mobile device, first equipment
Standby identification number and the corresponding relationship of the application identities number are written the control layer and find list of application.
Optionally, the method also includes:
The access Centralized Controller receives the application update message that the mobile device is sent；
The access Centralized Controller updates in the control layer discovery list of application according to described using update message
Application identities number.
Optionally, the access Centralized Controller is determined according to the position of the application identities number and the mobile device
The device id of first equipment, comprising:
The access Centralized Controller determines all shiftings with the application identities number according to the application identities number
Dynamic equipment；
The access Centralized Controller all has the application identities number from described according to the position of the mobile device
Mobile device in determine the mobile device for meeting direct-connected communication distance at a distance from the mobile device；
The access Centralized Controller sets the movement for meeting direct-connected communication distance at a distance from the mobile device
Standby mobile device identification number is determined as the mobile device identification number of the first equipment.
Correspondingly, the embodiment of the invention also provides the methods in a kind of D2D communication using discovery, comprising:
Mobile device receives the application discovery broadcast message of access Centralized Controller broadcast, the application discovery broadcast message
In include the mobile device mobile device identification number, the mobile device identification number of the first equipment and the correspondence of application identities number
Relationship；First equipment is to meet the mobile device of direct-connected communication distance at a distance from the mobile device；
The mobile device is according to the mobile device identification number of the mobile device, the mobile device identification number of the first equipment
With the corresponding relationship of application identities number, the mobile device identification number of first equipment with same application identification number is determined；
The mobile device carries out D2D according to the mobile device identification number of first equipment and first equipment and leads to
Letter.
Optionally, the mobile device is in the application discovery broadcast message for receiving the access Centralized Controller broadcast
Before, further includes:
The mobile device sends D2D communications applications to the access Centralized Controller and finds that request message, the D2D are logical
Letter application discovery request message includes the device number of the mobile device, application identities number.
Optionally, the mobile device is sending the D2D communications applications discovery request to the access Centralized Controller
Before message, further includes:
The mobile device establishes equipment end discovery list of application；
The mobile device is after the broadcast message for receiving the access Centralized Controller broadcast, further includes:
The mobile device by the mobile device identification number of the mobile device, the first equipment mobile device identification number and
The corresponding relationship of application identities number is written the equipment end and finds list of application.
Optionally, the method also includes:
The mobile device when determining that the application identities number change, broadcast more in the cell by the mobile device
Application identities number after new.
Correspondingly, the embodiment of the invention also provides the devices in a kind of D2D communication using discovery, comprising:
Receiving module, the D2D communications applications for receiving mobile device transmission find request message, and the D2D communication is answered
It include device number, the application identities number of the mobile device with discovery request message；
Determining module, for determining that the mobile device of the mobile device is identified according to the device number of the mobile device
Number；And the position according to the application identities number and the mobile device, determine the device id of first equipment, and
Generate the mobile device identification number, the device id of first equipment and pair of the application identities number of the mobile device
It should be related to；
Sending module, for the Cell Broadcast CB application discovery broadcast message where the mobile device, the application to be sent out
Now broadcast message includes the mobile device identification number of the mobile device, the device id of first equipment and the application
The corresponding relationship of identification number.
Optionally, further include establishing module:
It is described to establish module, for establishing discovery information list, device id allocation table and control layer discovery application column
Table；
The determining module is specifically used for:
Judge whether to store the mobile device identification number of the mobile device according to the device number of the mobile device；If
It is, it is determined that go out the mobile device identification number of the mobile device；If it is not, then distributing the mobile device for the mobile device
Mobile device identification number, the device id of the mobile device is written into the device id allocation table, described in extraction
The location identification number of the Base Station Identification number of mobile device own base station and the mobile device, by the Base Station Identification number and described
The discovery information list is written in location identification number.
Optionally, after the mobile device identification number for distributing the mobile device for the mobile device, the transmission
Module is also used to the mobile device identification number of the mobile device being sent to the mobile device.
Optionally, in the device id for the mobile device identification number, first equipment for generating the mobile device and
After the corresponding relationship of the application identities number, the determining module is also used to the mobile device mark of the mobile device
The control layer discovery application is written in the corresponding relationship of knowledge number, the device id of first equipment and the application identities number
List.
Optionally, the receiving module is also used to receive the application update message that the mobile device is sent；
The determining module is also used to be updated in the control layer discovery list of application according to described using update message
Application identities number.
Optionally, the determining module is specifically used for:
The access Centralized Controller determines all shiftings with the application identities number according to the application identities number
Dynamic equipment；
The access Centralized Controller all has the application identities number from described according to the position of the mobile device
Mobile device in determine the mobile device for meeting direct-connected communication distance at a distance from the mobile device；
The access Centralized Controller sets the movement for meeting direct-connected communication distance at a distance from the mobile device
Standby mobile device identification number is determined as the mobile device identification number of the first equipment.
Correspondingly, the embodiment of the present invention also provides the device in a kind of D2D communication using discovery, comprising:
Receiving module, for receiving the application discovery broadcast message of access Centralized Controller broadcast, the application discovery is wide
Broadcast the mobile device identification number and application identities number in message including the mobile device identification number of the mobile device, the first equipment
Corresponding relationship；First equipment is to meet the mobile device of direct-connected communication distance at a distance from the mobile device；
Determining module, for being identified according to the mobile device identification number of the mobile device, the mobile device of the first equipment
Number and application identities number corresponding relationship, determine the mobile device identification number of first equipment with same application identification number；
Communication module, it is logical for carrying out D2D according to the mobile device identification number of first equipment and first equipment
Letter.
It optionally, further include sending module；
The sending module, before broadcasting the message for what is broadcasted in the reception access Centralized Controller using discovery,
D2D communications applications are sent to the access Centralized Controller and find request message, and the D2D communications applications find request message packet
Include device number, the application identities number of the mobile device.
It optionally, further include establishing module；
It is described to establish module, for disappearing to the access Centralized Controller transmission D2D communications applications discovery request
Before breath, equipment end discovery list of application is established；
The determining module is also used to after the broadcast message for receiving the access Centralized Controller broadcast, will be described
Institute is written in the corresponding relationship of the mobile device identification number of mobile device, the mobile device identification number of the first equipment and application identities number
State equipment end discovery list of application.
Optionally, the sending module is also used to:
When determining that the application identities number change, updated application identities number are broadcasted in the cell.
Correspondingly, the embodiment of the present invention also provides a kind of computer readable storage medium, including computer-readable instruction, when
When computer reads and executes the computer-readable instruction, so that computer executes the side in above-mentioned D2D communication using discovery
Method.
Correspondingly, the embodiment of the present invention also provides a kind of computer program product, when the computer program product is counted
Calculate it is machine-readable when taking and executing so that computer executes the method in D2D communication using discovery.
The embodiment of the present invention shows that accessing Centralized Controller receives the D2D communications applications discovery request that mobile device is sent
Message determines the mobile device identification number of mobile device according to the device number of the mobile device, according to application identities number and moves
The position of dynamic equipment, determines the mobile device identification number of the first equipment, and generate the mobile device identification number of mobile device, first
The mobile device identification number of equipment and the corresponding relationship of application identities number, finally to the Cell Broadcast CB application hair where mobile device
Now broadcast the message.Access the mobile device identification number for the mobile device that Centralized Controller is determined, the mobile device of the first equipment
Identification number and the corresponding relationship of application identities number can make mobile device actively discover with same application and can carry out D2D
The mobile device of communication is established D2D without base station or access Centralized Controller and is connected so as to voluntarily initiate D2D communication
It connects.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structure of communication system provided in an embodiment of the present invention；
Fig. 2 is the flow diagram that discovery method is applied in a kind of D2D communication provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of base station location provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of distributing equipment identification number provided in an embodiment of the present invention；
Fig. 5 is the flow diagram that discovery method is applied in a kind of D2D communication provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram that a kind of application provided in an embodiment of the present invention updates；
Fig. 7 is the schematic diagram that a kind of mobile device provided in an embodiment of the present invention updates；
Fig. 8 is the structural schematic diagram in a kind of D2D communication provided in an embodiment of the present invention using discovery device；
Fig. 9 is the structural schematic diagram in a kind of D2D communication provided in an embodiment of the present invention using discovery device.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
Fig. 1 is illustratively shown in D2D communication provided in an embodiment of the present invention to be led to using what the method for discovery was applicable in
The structure of letter system, the communication system include access Centralized Controller 101, multiple mobile devices 102, multiple base stations 103.
The mobile device 102 can be it is a kind of with radio transmission-receiving function and the equipment of related mobile application can be run can
To be deployed in land, including indoor or outdoors, hand-held, wearing or vehicle-mounted；(such as steamer) can also be deployed on the water surface；Also
It can dispose in the sky (such as on aircraft, balloon and satellite etc.).The mobile device 102 can be mobile phone (mobile
Phone), Internet of Things (IoT) terminal device, tablet computer (Pad), the computer with radio transmission-receiving function, virtual reality
(virtual Reality, VR) terminal device, augmented reality (augmented Reality, AR) terminal device, Industry Control
Wireless terminal in (industrial control), the wireless terminal in unmanned (self driving), tele-medicine
The wireless terminal in wireless terminal, smart grid (smart grid), transportation safety in (remote medical)
The wireless terminal in wireless terminal, smart city (smart city) in (transportation safety), wisdom family
Wireless terminal etc. in (smart home).Embodiments herein to application scenarios without limitation.Mobile device 102 is sometimes
Be referred to as user equipment (user equipment, UE), access terminal equipment, UE unit, the station UE, movement station, mobile station,
Remote station, remote terminal equipment, mobile device, UE terminal device, terminal device, wireless telecom equipment, UE agency or UE device
Deng.
The base station 103 can be a kind of equipment that mobile device 102 is linked into wireless network, including but not limited to: drilling
Into type node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), section
Point B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base
Transceiver station, BTS), Home eNodeB (for example, home evolved nodeB or home node B, HNB),
Base Band Unit (baseband unit, BBU), base station (g nodeB, gNB), transfer point (transmitting and
Receiving point, TRP), launch point (transmitting point, TP), mobile switching centre etc., further, it is also possible to
Including wifi access point (access point, AP) etc..
The access Centralized Controller 101 can be the entity that 5G mobile communications network realizes resource system management, Neng Goushi
Synergistic function between existing base station.The access Centralized Controller 101 is to control framework according to 5G mobile communications network to dispose,
It can be located in base station 103, can also be located in the control cloud of 5G mobile communications network.
In order to support D2D provided in an embodiment of the present invention in communicating using the method found, above-mentioned entity structure is also
It include certain functional modules.
Wherein, include in mobile device 102: 5G communication module, D2D communications applications discovery module；5G communication module is supported
Communication function in 5G mobile communications network realizes radio communication channel processing function；D2D communications applications discovery module, which is realized, moves
The functions such as the maintenance of the information lists such as device location information, the application message of dynamic equipment end and information update.
Communication channel management is realized in base station 103, realizes mobile device access and data forwarding capability.
Accessing in Centralized Controller 101 includes: D2D communications applications discovery module, synergistic function module；D2D communications applications
Discovery module realizes the application discovery to the mobile device 102 in centralized control base station 103, including position of mobile equipment letter
The kinetic energy such as breath, the creation of application message, update, deletion；Synergistic function module is mainly based upon various resources and user information is real
The now coordinated management between more base stations, such as the distribution to frequency spectrum resource.
Based on foregoing description, Fig. 2 is illustratively shown in a kind of D2D communication provided in an embodiment of the present invention using discovery
Method process, the process can be communicated by D2D in executed using the device of discovery, which can be located at above-mentioned access set
In middle controller, it is also possible to the access Centralized Controller.
As described in Figure 2, which specifically includes:
Step S201, access Centralized Controller receive the D2D communications applications that mobile device is sent and find request message.
Specifically, when application discovery request is initiated in active, it is logical to send the D2D to access Centralized Controller for mobile device
Letter application discovery request message, D2D communications applications discovery request message include that D2D communications applications discovery request message includes moving
The device number of dynamic equipment, application identities number.Optionally, if mobile device is desirable for multiple applications and is communicated, D2D communication
It can also include D2D communications applications discovery request message type number using discovery request message, application identities number 1, should identify
Numbers 2 ..., application identities n, message ending etc..The application identities number are that the application name run in mobile device uses Hash letter
What number was calculated.The D2D communications applications find that request message type number can be as shown in table 1.
Table 1
| D2D communications applications find request message | 100 |
| The related discovery service log message of broadcast | 200 |
| Mobile device identification number assignment message | 300 |
| Mobile device application update message | 400 |
| Mobile device change message | 500 |
In order to preferably realize the process in D2D communication using discovery, access Centralized Controller is set in reception movement
Before D2D communications applications that preparation is sent discovery request message, it is also necessary to establish discovery information list, device id allocation table and
Control layer finds list of application.
Wherein, which may include: mobile device identification number, Base Station Identification number, location identification number, application
The information such as title, significance bit.Mobile device identification number is the temporary identifier number for accessing Centralized Controller and distributing to mobile device,
It is corresponding with the device number of mobile device；Base Station Identification number is the identification number distributed in 5G mobile communications network to base station；Position
Setting identification number is carried out after drawing block to its signal cover in advance based on each base station, to each piece of label；Application identities
It number is the label distributed to each application；Significance bit is to indicate whether a record is effective, and 1 indicates effectively, and 0 indicates invalid, nothing
Effect record can be periodically deleted.
The device id allocation table may include: the information such as the device number of mobile device, mobile device identification number.It is mobile
The device number of equipment is the unique reference number of equipment.Position table may include: Base Station Identification number, location identification number, position signal letter
Breath.The position table is defined by access Centralized Controller, does not need to update, unless base station deployment changes.Such as Fig. 3 institute
Show.
Control layer finds that list of application may include: mobile device identification number 1, mobile device identification number 2, application identities
Number, the information such as significance bit.It is empty table when the table initializes, after executing application discovery process, generation meets D2D communication distance and wants
The record with same application asked.Wherein mobile device identification number 1, mobile device identification number 2 and the record tool of application identities number 1
There is the mobile device of same application.
Step S202, access Centralized Controller determine the movement of the mobile device according to the device number of the mobile device
Device id.
Access Centralized Controller needs after receiving D2D communications applications discovery request message according to mobile device
Device number determines the mobile device identification number of the mobile device.Specifically, equipment of the access Centralized Controller according to mobile device
Number judge whether the mobile device identification number for being stored with the mobile device.If storing the mobile device mark of the mobile device
Number, then it can inquire discovery information list and obtain the mobile device identification number of mobile device.If not storing, controlled in access set
Device processed needs to distribute the mobile device identification number of the mobile device for mobile device, will be in the device id write-in of mobile device
It states in device id allocation table.Then the Base Station Identification number of the mobile device own base station is extracted from system and from position
Above-mentioned discovery information is written in the Base Station Identification number and the location identification number by the location identification number that the mobile device is inquired in table
List.Above-mentioned mobile device identification number is to access the temporary identifier number that Centralized Controller is mobile device distribution, for the ease of
Management.And the device number of mobile device is the unique identifying number of mobile device.
Optionally, access Centralized Controller leads to after distributing mobile device identification number for mobile device, while to D2D is initiated
The mobile device of letter application discovery request message sends a mobile device identification number assignment message, which includes: that movement is set
Standby identification number assignment type of message number, mobile device identification number, as shown in Figure 4.Wherein, mobile device identification number assignment message class
Model can be shown in Table 1.
Step S203 accesses Centralized Controller according to the position of the application identities number and the mobile device, determines institute
The equipment stated the device id of the first equipment, and generate the mobile device identification number of the mobile device, first equipment
The corresponding relationship of identification number and the application identities number.
Specifically, access Centralized Controller can determine all movements with application identities number according to application identities number
Equipment.For example, table 2 shows all mobile devices of controller management in access set, initiates the discovery request of D2D communications applications and disappear
The application identities number of the application of the mobile device operation of breath are 3, can determine that all operation application identities number are 3 from the table
Application mobile device mobile device identification number.
Table 2
| Mobile device identification number | Application identities number |
| 1 | 1、2、3、5、9、11 |
| 2 | 3、4、9、11 |
| 3 | 5、7、11、22、 |
| 4 | 1、3、5、8、9 |
| … | … |
Then access Centralized Controller is according to the position of mobile device from above-mentioned all movements with the application identities number
The mobile device for meeting direct-connected communication distance at a distance from the mobile device is determined in equipment.That is, the mobile device
To meet direct-connected communication distance with the physical distance of other mobile devices with the application identities number, which can
To be empirically arranged, it is not limited in the embodiment of the present invention.Access Centralized Controller can by this with mobile device away from
Mobile device identification number from the mobile device for meeting direct-connected communication distance is determined as the mobile device identification number of the first equipment.?
That is first equipment is to meet the mobile device of direct-connected communication distance at a distance from the mobile device.Then the shifting is generated
Mobile device identification number, the mobile device identification number of the first equipment and the corresponding relationship of application identities number of dynamic equipment, the correspondence
Relationship can exist in the form of a table, that is to say, that in the shifting for the mobile device identification number, the first equipment for generating the mobile device
After dynamic device id and the corresponding relationship of application identities number, Centralized Controller is accessed by the mobile device mark of the mobile device
The corresponding relationship of knowledge number, the mobile device identification number of the first equipment and application identities number is written to above-mentioned control layer discovery application column
In table.
Step S204 accesses the Cell Broadcast CB application discovery broadcast message where Centralized Controller to the mobile device,
The application discovery broadcast message includes the mobile device mark of the mobile device identification number of the mobile device, first equipment
The corresponding relationship of knowledge number and the application identities number.
In the mobile device identification number and application identities number of the mobile device identification number, the first equipment for obtaining the mobile device
Corresponding relationship after, access Centralized Controller need to where the mobile device Cell Broadcast CB application discovery broadcast message,
The application discovery broadcast message include the mobile device identification number of mobile device, first equipment mobile device identification number and
The corresponding relationship of the application identities number.The mobile device for receiving application discovery broadcast message can be made to determine oneself
What is needed can carry out the mobile device of D2D communication, and carry out D2D communication.
Optionally, it if after the application update of mobile device operation, needs to update to access Centralized Controller sending application
Message, this accesses Centralized Controller according to the updated application using including updated application identities number in update message
Identification number updates the application identities number of above-mentioned control layer discovery list of application.
Above-described embodiment shows that accessing the D2D communications applications discovery request that Centralized Controller reception mobile device is sent disappears
Breath, the mobile device identification number of mobile device is determined according to the device number of the mobile device, according to application identities number and movement
The position of equipment, determines the mobile device identification number of the first equipment, and generates the mobile device identification number of mobile device, first sets
The corresponding relationship of standby mobile device identification number and application identities number, finally to the Cell Broadcast CB application discovery where mobile device
Broadcast message includes the mobile device mark of the mobile device identification number of mobile device, the first equipment using discovery broadcast message
Number and application identities number corresponding relationship.Centralized Controller is accessed according to the mobile device identification number and application identities of mobile device
Number mobile device identification number of obtained mobile device, the mobile device identification number of the first equipment and the corresponding of application identities number are closed
System can make mobile device actively discover with same application and can carry out the mobile device of D2D communication, so as to certainly
Row initiates D2D communication, establishes D2D connection without base station or access Centralized Controller.
Based on the same technical idea, Fig. 5 is illustratively shown in a kind of D2D communication using the stream of the method for discovery
Journey, the process can be communicated by D2D in using discovery device execute, the device can be located at mobile device in, be also possible to
The mobile device.
As shown in figure 5, the specific steps of the process comprises:
Step S501, mobile device receive the application discovery broadcast message of access Centralized Controller broadcast, the application hair
It now include the mobile device identification number of the mobile device, the mobile device identification number of the first equipment and application mark in broadcast message
The corresponding relationship of knowledge number.
Specifically, in embodiments of the present invention, which is to meet direct-connected communication at a distance from the mobile device
The mobile device of distance.Mobile device also needs before receiving the application discovery broadcast message of access Centralized Controller broadcast
D2D communications applications are sent to the access Centralized Controller finds that request message, D2D communications applications discovery request message include
The device number of the mobile device, application identities number optionally, should if mobile device is desirable for multiple applications and is communicated
D2D communications applications discovery request message can also include D2D communications applications discovery request message type number, application identities number 1, answer
The identification number 2 ..., application identities n, message ending etc..The application identities number are that the application name run in mobile device uses
What hash function was calculated.
Before sending D2D communications applications discovery request message, in order to execute the process of application discovery, also need
Establish equipment end discovery list of application.The equipment end finds that list of application may include: mobile device identification number, application identities
Number, the message such as significance bit.Mobile device also needs after the application discovery broadcast message for receiving access Centralized Controller broadcast
Corresponding by the mobile device identification number of above-mentioned mobile device, the mobile device identification number of the first equipment and application identities number is closed
System is written in equipment end discovery list of application.
Step S502, mobile device is according to the mobile device identification number of the mobile device, the mobile device of the first equipment
The corresponding relationship of identification number and application identities number determines the mobile device mark of first equipment with same application identification number
Number.
Mobile device finds list of application according to equipment end, and mobile device can be found that and oneself has identical a certain answer
With, and the mobile device of D2D communication can be carried out, mobile device is so that it is determined that provide same application identification number first sets
Standby mobile device identification number.
Step S503, mobile device are carried out according to the mobile device identification number of first equipment and first equipment
D2D communication.
After mobile device obtains the mobile device identification number of first equipment with same application identification number, can with this
One equipment establishes D2D connection, carries out D2D communication.
Optionally, after the application in mobile device changes, mobile device broadcast mobile device application update message,
The message can be received in other mobile devices and access Centralized Controller；Other mobile devices and access Centralized Controller root
According to information updating, it finds list of application；The message includes: mobile device application update message style number, mobile device mark
Number, application identities number, processing type code；When the value for wherein handling type code is 1, indicate to increase application；Handle type
When the value of mark is 0, indicate to delete application.As shown in Figure 6.Mobile device application update message style number can be such as above-mentioned table
Shown in 1.
Optionally, access Centralized Controller can inspect periodically control layer discovery list of application according to the position of mobile device
In mobile device between distance, determine mobile device whether in its range of management, and then generate mobile device change message simultaneously
Broadcast；The message includes: mobile device change message style number, mobile device identification number, equipment state number；Wherein equipment state
Number value be 1 when, indicate mobile device relative recording be failure；When value is 0, indicate that mobile device relative recording carries out
It deletes.As shown in Figure 7.Mobile device change message style number is shown in Table 1.
In embodiments of the present invention, request message and broadcast discovery service log message are found by D2D, accessed respectively
Mobile device is added in the control layer discovery list of application of Centralized Controller and the equipment end discovery list of application of mobile device
And its relative recording of application；Further by above-mentioned record list, accesses Centralized Controller and mobile device end can be actively
In the equipment for being found to have same application, such as the equipment end discovery list of application of slave mobile device, has recorded from broadcast and find
The mobile device identification number that is extracted in service log message, application identities number, significance bit information, in this way its be known that can be straight
Connect the application and equipment of letter；For accessing Centralized Controller, list of application is found by inquiry control layer, will appreciate that shifting
Using situation and the potential mobile device and application for carrying out D2D communication in dynamic equipment.
It is provided in an embodiment of the present invention based on device location and the D2D of list mechanism communication in using discovery method by pair
Access the novel list of discovery, mobile device mark allocation table, position table, control layer discovery list of application and the shifting of Centralized Controller
Equipment end discovery list of application in dynamic equipment is initialized, and is controlled in execution D2D communications applications discovery agreement, access set
Device processed is wide to mobile device transmission assignment messages, mobile device broadcast mobile device application update message, access Centralized Controller
Mobile device change message is broadcast, is had recorded in range of management in each list of above-mentioned access Centralized Controller and mobile device
Mobile device and its there is the case where application, by above- mentioned information can actively discover with same application to carry out D2D logical
The mobile terminal of letter and using situation etc..This based on device location and the D2D of list mechanism communication in apply discovery method
It can simplify and be promoted and the ability for providing and supporting is communicated to D2D；Mobile device end can define the application that can carry out D2D communication
And equipment, reduce the processing pressure of network-side；Access Centralized Controller passes through to mobile device in range of management and its application
It is recorded, combining position information, sends mobile device end for potential D2D communication equipment and application message, improved pair
The application discovery of D2D communication and managerial ability.
Specification is needed, it should be based on not being related in device location and the D2D of list mechanism communication using discovery method
Specific D2D connection setup range.This in device location and the D2D of list mechanism communication based on being not only limited to using discovery method
The scene of agreement description, is also applied for the access Centralized Controller of different range of managements, supports between multiple access Centralized Controller
It cooperates, is predicted according to mobile device shift position, neighboring access Centralized Controller shares mobile device information, executes association
View.
Based on the same technical idea, Fig. 8 is illustratively shown in a kind of D2D communication that the embodiment of the present invention also provides
Using the device of discovery, comprising:
Receiving module 801, the D2D communications applications for receiving mobile device transmission find request message, the D2D communication
It include the device number of the mobile device, application identities number using discovery request message；
Determining module 802, for determining the mobile device mark of the mobile device according to the device number of the mobile device
Knowledge number；And the position according to the application identities number and the mobile device, determine the device id of first equipment,
And generate the mobile device identification number of the mobile device, the device id of first equipment and the application identities number
Corresponding relationship；
Sending module 803, for broadcasting the message to the Cell Broadcast CB application discovery where the mobile device, the application
It was found that broadcast message include the mobile device identification number of the mobile device, first equipment device id and described answer
With the corresponding relationship of identification number.
Optionally, further include establishing module (not shown):
It is described to establish module, for establishing discovery information list, device id allocation table and control layer discovery application column
Table；
The determining module 802 is specifically used for:
Judge whether to store the mobile device identification number of the mobile device according to the device number of the mobile device；If
It is, it is determined that go out the mobile device identification number of the mobile device；If it is not, then distributing the mobile device for the mobile device
Mobile device identification number, the device id of the mobile device is written into the device id allocation table, described in extraction
The location identification number of the Base Station Identification number of mobile device own base station and the mobile device, by the Base Station Identification number and described
The discovery information list is written in location identification number.
Optionally, after the mobile device identification number for distributing the mobile device for the mobile device, the transmission
Module 803 is also used to the mobile device identification number of the mobile device being sent to the mobile device.
Optionally, in the device id for the mobile device identification number, first equipment for generating the mobile device and
After the corresponding relationship of the application identities number, the determining module 802 is also used to set the movement of the mobile device
The control layer discovery is written in the corresponding relationship of standby identification number, the device id of first equipment and the application identities number
List of application.
Optionally, the receiving module 801 is also used to receive the application update message that the mobile device is sent；
The determining module 802 is also used to be updated according to the application update message in the control layer discovery list of application
Application identities number.
Optionally, the determining module 802 is specifically used for:
The access Centralized Controller determines all shiftings with the application identities number according to the application identities number
Dynamic equipment；
The access Centralized Controller all has the application identities number from described according to the position of the mobile device
Mobile device in determine the mobile device for meeting direct-connected communication distance at a distance from the mobile device；
The access Centralized Controller sets the movement for meeting direct-connected communication distance at a distance from the mobile device
Standby mobile device identification number is determined as the mobile device identification number of the first equipment.
Based on the same technical idea, Fig. 9 illustratively shows the embodiment of the present invention and also provides answers in a kind of D2D communication
With the device of discovery, comprising:
Receiving module 901, for receiving the application discovery broadcast message of access Centralized Controller broadcast, the application discovery
The mobile device identification number and application identities of mobile device identification number, the first equipment in broadcast message including the mobile device
Number corresponding relationship；First equipment is to meet the mobile device of direct-connected communication distance at a distance from the mobile device；
Determining module 902, for the mobile device mark according to the mobile device identification number of the mobile device, the first equipment
The corresponding relationship of knowledge number and application identities number determines the mobile device mark of first equipment with same application identification number
Number；
Communication module 903, for carrying out D2D according to the mobile device identification number of first equipment and first equipment
Communication.
It optionally, further include sending module (not shown)；
The sending module, before broadcasting the message for what is broadcasted in the reception access Centralized Controller using discovery,
D2D communications applications are sent to the access Centralized Controller and find request message, and the D2D communications applications find request message packet
Include device number, the application identities number of the mobile device.
It optionally, further include establishing module (not shown)；
It is described to establish module, for disappearing to the access Centralized Controller transmission D2D communications applications discovery request
Before breath, equipment end discovery list of application is established；
The determining module 902 is also used to after the broadcast message for receiving the access Centralized Controller broadcast, by institute
State the corresponding relationship write-in of the mobile device identification number of mobile device, the mobile device identification number of the first equipment and application identities number
The equipment end finds list of application.
Optionally, the sending module is also used to:
When determining that the application identities number change, updated application identities number are broadcasted in the cell.
Optionally, the embodiment of the present invention also provides a kind of computer readable storage medium, including computer-readable instruction, when
When computer reads and executes the computer-readable instruction, so that computer executes the side in above-mentioned D2D communication using discovery
Method.
Optionally, the embodiment of the present invention also provides a kind of computer program product, when the computer program product is counted
Calculate it is machine-readable when taking and executing so that computer executes the method in D2D communication using discovery.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (20)
1. using the method for discovery in a kind of device-to-device D2D communication characterized by comprising
It accesses Centralized Controller and receives the D2D communications applications discovery request message that mobile device is sent, the D2D communications applications hair
Existing request message includes the device number of the mobile device, application identities number；
The access Centralized Controller determines that the mobile device of the mobile device identifies according to the device number of the mobile device
Number；
The access Centralized Controller determines first equipment according to the position of the application identities number and the mobile device
Mobile device identification number, and generate the mobile device mark of the mobile device identification number of the mobile device, first equipment
The corresponding relationship of knowledge number and the application identities number；
Cell Broadcast CB application discovery broadcast message where access from the Centralized Controller to the mobile device, the application hair
Now broadcast message includes the mobile device identification number of the mobile device, the mobile device identification number of first equipment and described
The corresponding relationship of application identities number.
2. the method as described in claim 1, which is characterized in that the access Centralized Controller is receiving the mobile device hair
Before the D2D communications applications discovery request message sent, further includes:
The access Centralized Controller establishes discovery information list, device id allocation table and control layer and finds list of application；
The access Centralized Controller determines that the mobile device of the mobile device identifies according to the device number of the mobile device
Number, comprising:
The access Centralized Controller judges whether to store the movement of the mobile device according to the device number of the mobile device
Device id；If so, determining the mobile device identification number of the mobile device；If it is not, being then the mobile device point
The device id point is written in the device id of the mobile device by the mobile device identification number with the mobile device
With table, the Base Station Identification number of the mobile device own base station and the location identification number of the mobile device are extracted, by the base
The discovery information list is written in station identification numbers and the location identification number.
3. method according to claim 2, which is characterized in that the access Centralized Controller is distributed for the mobile device
After the mobile device identification number of the mobile device, further includes:
The mobile device identification number of the mobile device is sent to the mobile device by the access Centralized Controller.
4. method according to claim 2, which is characterized in that the access Centralized Controller is generating the mobile device
After the corresponding relationship of mobile device identification number, the mobile device identification number of first equipment and the application identities number, also
Include:
The access Centralized Controller sets the movement of the mobile device identification number of the mobile device, first equipment
Standby identification number and the corresponding relationship of the application identities number are written the control layer and find list of application.
5. method as claimed in claim 4, which is characterized in that the method also includes:
The access Centralized Controller receives the application update message that the mobile device is sent；
The access Centralized Controller is according to the application updated using update message in control layer discovery list of application
Identification number.
6. the method as described in claim 1, which is characterized in that the access Centralized Controller according to the application identities number and
The position of the mobile device determines the mobile device identification number of first equipment, comprising:
The access Centralized Controller determines that all movements with the application identities number are set according to the application identities number
It is standby；
The access Centralized Controller is according to the position of the mobile device from all shiftings with the application identities number
The mobile device for meeting direct-connected communication distance at a distance from the mobile device is determined in dynamic equipment；
The access Centralized Controller is by the mobile device for meeting direct-connected communication distance at a distance from the mobile device
Mobile device identification number is determined as the mobile device identification number of the first equipment.
7. using the method for discovery in a kind of device-to-device D2D communication characterized by comprising
Mobile device receives the application discovery broadcast message of access Centralized Controller broadcast, wraps in the application discovery broadcast message
The corresponding of the mobile device identification number of the mobile device, the mobile device identification number of the first equipment and application identities number is included to close
System；First equipment is to meet the mobile device of direct-connected communication distance at a distance from the mobile device；
The mobile device is according to the mobile device identification number of the mobile device, the mobile device identification number of the first equipment and answers
With the corresponding relationship of identification number, the mobile device identification number of first equipment with same application identification number is determined；
The mobile device carries out D2D communication according to the mobile device identification number of first equipment and first equipment.
8. the method for claim 7, which is characterized in that the mobile device is wide in the reception access Centralized Controller
Before the broadcast message broadcast, further includes:
The mobile device sends D2D communications applications to the access Centralized Controller and finds request message, and the D2D communication is answered
It include device number, the application identities number of the mobile device with discovery request message.
9. method according to claim 8, which is characterized in that the mobile device is sent to the access Centralized Controller
Before the D2D communications applications discovery request message, further includes:
The mobile device establishes equipment end discovery list of application；
The mobile device is after receiving the application discovery broadcast message of the access Centralized Controller broadcast, further includes:
The mobile device is by the mobile device identification number of the mobile device, the mobile device identification number of the first equipment and application
The corresponding relationship of identification number is written the equipment end and finds list of application.
10. such as the described in any item methods of claim 7 to 9, which is characterized in that the method also includes:
The mobile device is when determining that the application identities number change, after the mobile device broadcasts update in the cell
Application identities number.
11. using the device of discovery in a kind of device-to-device D2D communication characterized by comprising
Receiving module, the D2D communications applications for receiving mobile device transmission find request message, the D2D communications applications hair
Existing request message includes the device number of the mobile device, application identities number；
Determining module, for determining the mobile device identification number of the mobile device according to the device number of the mobile device；With
And the position according to the application identities number and the mobile device, determine the device id of first equipment, and generate
The mobile device identification number of the mobile device, the device id of first equipment and the corresponding of the application identities number are closed
System；
Sending module, for the Cell Broadcast CB application discovery broadcast message where the mobile device, the application discovery to be wide
Broadcast mobile device identification number, first equipment that message includes the mobile device device id and the application identities
Number corresponding relationship.
12. device as claimed in claim 11, which is characterized in that further include establishing module:
It is described to establish module, list of application is found for establishing discovery information list, device id allocation table and control layer；
The determining module is specifically used for:
Judge whether to store the mobile device identification number of the mobile device according to the device number of the mobile device；If so,
Determine the mobile device identification number of the mobile device；If it is not, then distributing the shifting of the mobile device for the mobile device
The device id of the mobile device is written the device id allocation table, extracts the movement by dynamic device id
The location identification number of the Base Station Identification number of equipment own base station and the mobile device, by the Base Station Identification number and the position
The discovery information list is written in identification number.
13. device as claimed in claim 12, which is characterized in that in the shifting for distributing the mobile device for the mobile device
After dynamic device id, the sending module is also used to the mobile device identification number of the mobile device being sent to the shifting
Dynamic equipment.
14. device as claimed in claim 12, which is characterized in that the mobile device identification number for generating the mobile device,
After the device id of first equipment and the corresponding relationship of the application identities number, the determining module is also used to institute
State the mobile device identification number, the device id of first equipment and the correspondence of the application identities number of the mobile device
Relationship is written the control layer and finds list of application.
15. device as claimed in claim 11, which is characterized in that the determining module is specifically used for:
The access Centralized Controller determines that all movements with the application identities number are set according to the application identities number
It is standby；
The access Centralized Controller is according to the position of the mobile device from all shiftings with the application identities number
The mobile device for meeting direct-connected communication distance at a distance from the mobile device is determined in dynamic equipment；
The access Centralized Controller is by the mobile device for meeting direct-connected communication distance at a distance from the mobile device
Mobile device identification number is determined as the mobile device identification number of the first equipment.
16. using the device of discovery in a kind of device-to-device D2D communication characterized by comprising
Receiving module, for receiving the application discovery broadcast message of access Centralized Controller broadcast, the application discovery broadcast disappears
It include mobile device identification number, the mobile device identification number of the first equipment and pair of application identities number of the mobile device in breath
It should be related to；First equipment is to meet the mobile device of direct-connected communication distance at a distance from the mobile device；
Determining module, for according to the mobile device identification number of the mobile device, the mobile device identification number of the first equipment and
The corresponding relationship of application identities number determines the mobile device identification number of first equipment with same application identification number；
Communication module, for carrying out D2D communication according to the mobile device identification number of first equipment and first equipment.
17. device as claimed in claim 16, which is characterized in that further include sending module；
The sending module, before broadcasting the message for what is broadcasted in the reception access Centralized Controller using discovery, to institute
It states access Centralized Controller and sends D2D communications applications discovery request message, the D2D communications applications discovery request message includes institute
State device number, the application identities number of mobile device.
18. device as claimed in claim 17, which is characterized in that further include establishing module；
It is described to establish module, for the access Centralized Controller send the D2D communications applications find request message it
Before, establish equipment end discovery list of application；
The determining module is also used to after the broadcast message for receiving the access Centralized Controller broadcast, by the movement
It is set described in the corresponding relationship write-in of the mobile device identification number of equipment, the mobile device identification number of the first equipment and application identities number
Standby end discovery list of application.
19. a kind of computer readable storage medium, which is characterized in that including computer-readable instruction, when computer is read and is held
When the row computer-readable instruction, so that computer executes the method as described in claim 1 to 6 or 7 to 10 any one.
20. a kind of computer program product, which is characterized in that when the computer program product is read and executed by a computer
When, so that computer executes the method as described in claims require 1 to 6 or 7 to 10 any one.
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| CN201711052303.8A CN110072214B (en) | 2017-10-30 | 2017-10-30 | Method and device for discovering applications in device-to-device D2D communication |
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