WO2013189246A1 - 一种设备到设备的通信方法、装置、系统、计算机程序及存储介质 - Google Patents

一种设备到设备的通信方法、装置、系统、计算机程序及存储介质 Download PDF

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Publication number
WO2013189246A1
WO2013189246A1 PCT/CN2013/076976 CN2013076976W WO2013189246A1 WO 2013189246 A1 WO2013189246 A1 WO 2013189246A1 CN 2013076976 W CN2013076976 W CN 2013076976W WO 2013189246 A1 WO2013189246 A1 WO 2013189246A1
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WO
WIPO (PCT)
Prior art keywords
communication
terminal
passive
base station
resource allocation
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PCT/CN2013/076976
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English (en)
French (fr)
Inventor
胡南
谢芳
崔春风
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中国移动通信集团公司
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Application filed by 中国移动通信集团公司 filed Critical 中国移动通信集团公司
Publication of WO2013189246A1 publication Critical patent/WO2013189246A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a device-to-device communication method, device system, computer program, and storage medium.
  • D2D communication refers to communication directly between user terminals without data forwarding through a base station.
  • Traditional D2D technologies include Bluetooth, direct wireless Internet access, WiFi-Direct, and the like.
  • cellular networks do not have the function of D2D communication, and communication between terminals must forward data through the base station.
  • D2D technology in the cellular network enables terminals closer to each other to discover each other and directly transmit data, which not only saves air interface resources and core network resources, but also provides new services such as battle games and short-range broadcasting.
  • M2M machine to machine
  • FIG. 1 is a flowchart of implementing a device-to-device communication method in the prior art. As shown in Figure 1, the following steps are included:
  • Step 101 The active terminal broadcasts a D2D communication request message, where the D2D communication request message carries an active terminal identifier.
  • Step 102 The passive terminal returns a D2D communication response message to the active terminal corresponding to the active terminal identifier, where the D2D communication response message carries a passive terminal identifier.
  • the passive terminal activates the D2D probe receiving module for D2D communication, and the passive terminal is within the communication distance of the active terminal, the passive terminal receives the D2D communication request message of the active terminal, if the passive terminal It is expected that the D2D communication is performed with the active terminal, and the passive terminal returns a D2D communication response message to the active terminal corresponding to the active terminal identifier, where the D2D communication response carries the passive terminal identifier.
  • Step 103 The active terminal sends a D2D communication confirmation message to the passive terminal corresponding to the passive terminal identifier.
  • Step 104 The active terminal negotiates with the passive terminal the time-frequency resources used by the two parties in the D2D communication process.
  • Step 105 The active terminal and the passive terminal use the negotiated time-frequency resources for D2D communication.
  • the inventors have found that at least the following problems exist in the prior art: In the D2D communication process between the existing active terminal and the passive terminal, there is no participation of the base station, which makes it impossible to implement the base station to the active terminal and the passive Control of the D2D communication process between terminals. In addition, since there is no base station participation in the D2D communication process, it is also difficult to realize the extended coverage of the network system by the network system.
  • the active terminal A when the active terminal A is not in the coverage of the base station, and the passive terminal B can communicate with the base station, the active terminal A cannot directly communicate with the base station, nor can the passive terminal B communicate with the base station, thereby making the base station Unable to extend coverage of active terminal A through passive terminal B.
  • the main object of the present invention is to provide a device-to-device communication method capable of realizing control of a D2D communication process between a master terminal and a passive terminal by a base station.
  • Another object of the present invention is to provide three device-to-device communication devices capable of controlling the D2D communication process between the active terminal and the passive terminal by the base station.
  • a device-to-device communication method comprising:
  • the base station sends a D2D connection establishment request message
  • the active terminal sends the resource allocation indication information; Performing D2D communication with the active terminal on the resource indicated by the resource allocation indication information.
  • a device-to-device communication method comprising:
  • D2D communication is performed with the passive terminal on the resource indicated by the resource allocation indication information.
  • a device-to-device communication method comprising:
  • Resource allocation indication information for D2D communication is transmitted to the passive terminal.
  • a passive terminal comprising: a first receiving unit, a first sending unit, and a first communications unit; the first receiving unit, configured to receive a device-to-device D2D communication request message broadcast by the active terminal, and send the D2D communication request The message is sent to the first sending unit; and is further configured to receive resource allocation indication information returned by the base station, and send the resource allocation indication information to the first sending unit and the first communications unit;
  • the first sending unit is configured to send a D2D connection establishment request message to the base station, and is further configured to send resource allocation indication information to the active terminal;
  • the first communication unit is configured to perform D2D communication with the active terminal on the resource indicated by the resource allocation indication information.
  • An active terminal includes: a second sending unit, a second receiving unit, and a second communication unit; the second sending unit, the broadcast device to device D2D communication request message;
  • the second receiving unit is configured to receive resource allocation indication information of the base station provided by the passive terminal, and send the resource allocation indication information to the second remote information unit;
  • the second communication unit is configured to perform D2D communication with the passive terminal on the resource indicated by the resource allocation indication information.
  • a base station comprising: a third receiving unit and a third sending unit;
  • the third receiving unit is configured to receive a device-to-device D2D connection establishment request message sent by the passive terminal;
  • the third sending unit is configured to send, to the passive terminal, the resource allocation indication information in the D2D communication.
  • a device-to-device communication system includes a passive terminal, an active terminal, and a base station, where The passive terminal is configured to receive a device-to-device D2D communication request message broadcasted by the active terminal, send a D2D connection establishment request message to the base station, receive resource allocation indication information returned by the base station, and send resource allocation indication information to the active terminal, and The active terminal performs D2D communication on the resource indicated by the resource allocation indication information;
  • the active terminal is configured to broadcast the D2D communication request message, receive resource allocation indication information of the base station provided by the passive terminal, and perform D2D communication with the passive terminal on the resource indicated by the resource allocation indication information;
  • the base station is configured to receive the D2D connection establishment request message sent by the passive terminal, and send resource allocation indication information for D2D communication to the passive terminal.
  • a computer program for performing a device-to-device communication method comprising: receiving a device-to-device D2D communication request message broadcast by an active terminal;
  • a computer program for performing a device-to-device remote signaling method comprising: broadcasting a device to device D2D communication request message;
  • a computer program for performing a device-to-device communication method comprising: receiving a device-to-device D2D connection establishment request message sent by a passive terminal;
  • Resource allocation indication information for D2D communication is transmitted to the passive terminal.
  • Resource allocation indication information for D2D communication is transmitted to the passive terminal.
  • the passive terminal after receiving the D2D communication request message that is carried by the active terminal and carrying the active terminal identifier and the D2D communication condition, the passive terminal sends the D2D connection establishment that carries the D2D communication condition to the base station.
  • a request message when the base station agrees to the D2D remote communication condition, the passive terminal receives the D2D connection setup response message returned by the base station, where the D2D connection setup response message carries resource allocation indication information, and the passive terminal according to the resource allocation indication information and the active terminal Identify the corresponding active terminal for D2D communication.
  • the D2D connection establishment request message is first sent to the base station, and then the base station allocates the passive terminal and the active terminal.
  • the time-frequency resources for D2D communication are performed, so that the base station can effectively participate in the D2D communication process between the active terminal and the passive terminal, and perform corresponding control on the D2D communication process.
  • the base station can control the D2D communication process of the active terminal and the passive terminal, when the passive terminal can communicate with the base station, but the active terminal is not within the coverage of the base station, the active terminal can pass the passive terminal.
  • the relay communicates with the base station, so that the base station can extend the coverage of the active terminal through the passive terminal, and realize the end of the network system.
  • FIG. 1 is a schematic diagram showing an implementation process of a device-to-device communication method in the prior art.
  • FIG. 2 is a schematic diagram of a first implementation process of a device-to-device communication method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a second real process of a device-to-device communication method according to an embodiment of the present invention.
  • 4 is a schematic diagram of a third implementation flow of a device-to-device communication method according to an embodiment of the present invention.
  • FIG. 5 is a device-to-device communication method according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a passive terminal according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an active terminal according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a device-to-device communication system according to an embodiment of the present invention.
  • a device-to-device communication scheme is proposed, which can implement the control of the D2D communication process between the active terminal and the passive terminal by the base station.
  • FIG. 2 is a flowchart of a first implementation of a device-to-device communication method according to an embodiment of the present invention. As shown in Figure 2, the following steps are included:
  • Step 201 The active terminal broadcasts a D2D communication request message, where the D2D communication request message carries an active terminal identifier and a D2D communication condition.
  • the active terminal identifier may be an active terminal ID, or may be other identifier information of the active terminal.
  • the D2D communication condition is used to indicate a reason for the active terminal to perform D2D remote communication
  • the D2D communication condition may include: the passive terminal after interrupting communication with the base station and the active terminal D2D remote communication; or, passive terminal relays communication between the active terminal and the base station.
  • Step 202 The passive terminal returns a D2D communication response message to the active terminal corresponding to the active terminal identifier, where the D2D communication response message carries a passive terminal identifier.
  • the passive terminal identifier may be a passive terminal ID, or may be other identifier information of the passive terminal.
  • the passive terminal determines whether to respond to the D2D communication request message, In a specific implementation, the passive terminal may determine whether to respond to the D2D communication request message according to the D2D communication indication sent by the base station in advance. In addition, the passive terminal may also determine whether to respond to the D2D communication request message by itself.
  • the passive terminal When the passive terminal decides to respond to the D2D communication request message, the passive terminal returns a D2D communication response message to the active terminal corresponding to the active terminal identifier carried in the D2D communication request message, where the D2D communication response message carries the passive terminal identifier.
  • the passive terminal may send the D2D communication response message at a time-frequency location pre-configured by the base station or a standard-defined 0-inch frequency position.
  • the D2D communication response message may further include signal receiving quality information that the passive terminal receives the D2D communication request message, where the signal receiving quality information may include: the signal noise of the passive terminal receiving the D2D communication request message Information such as ratio, signal-to-interference ratio, or received power.
  • the signal receiving quality information is used when the active terminal receives the D2D communication response message returned by the two or more passive terminals, and the active terminal may send the D2D communication confirmation message to the passive terminal whose signal receiving quality information is greater than the preset threshold.
  • Step 203 The active terminal sends a D2D communication confirmation message to the passive terminal corresponding to the passive terminal identifier.
  • the active terminal after the active terminal broadcasts the D2D communication request message, there may be one or more passive terminals that receive the D2D communication request message expecting D2D communication with the active terminal, so the active terminal may receive the same at the same time.
  • a D2D communication response message carrying a passive terminal identifier returned by one or more passive terminals.
  • the active terminal when the active terminal receives the D2D remote response message returned by the one or more passive terminals, the active terminal may directly respond to the corresponding passive terminal according to the passive terminal identifier carried in the D2D communication response message.
  • the terminal separately sends a D2D communication confirmation message.
  • the active terminal when the active terminal receives the D2D communication response message returned by the multiple passive terminals, the active terminal may also broadcast a D2D communication confirmation message to the passive terminal that meets the preset condition. In order to distinguish each passive terminal, the broadcasted D2D communication confirmation message may carry a passive terminal identifier.
  • the active terminal may further determine whether to agree to the D2D communication with the passive terminal corresponding to the passive terminal identifier. For example, the active terminal can determine the information carried in the D2D communication response message. Whether the signal receiving quality information is greater than a preset threshold. If it is greater, it agrees to perform D2D communication with the corresponding passive terminal; otherwise, it does not agree to perform D2D communication with the corresponding passive terminal.
  • the step may be performed, that is, the active terminal sends a D2D communication confirmation message to the passive terminal corresponding to the passive terminal identifier.
  • Step 204 The passive terminal sends a D2D connection establishment request message to the base station, where the D2D connection establishment request message carries a D2D communication condition.
  • the passive terminal after receiving the D2D communication confirmation message sent by the active terminal, the passive terminal can know that the active terminal agrees to perform D2D communication, and the passive terminal sends a D2D connection establishment request message to the base station, and the D2D connection is established.
  • the request message carries a D2D communication condition.
  • Step 205 When the base station agrees to the D2D communication condition, the base station allocates time-frequency resources available for D2D communication to the passive terminal and the active terminal according to the preset resource allocation policy.
  • the base station when the base station agrees to the D2D remote signaling condition, for example, when the base station agrees that the passive terminal performs the D2D communication with the active terminal after interrupting the communication with the base station, or when the base station agrees to the passive terminal relay initiative
  • the base station allocates time-frequency resources that can be used for D2D remote signaling to the passive terminal and the active terminal according to the preset resource allocation policy; when the base station does not agree with the D2D communication condition, the terminal ends between the passive terminal and the active terminal. D2D remote signaling process.
  • the active terminal identifier may be further carried in the D2D connection establishment request message.
  • the base station may further determine, according to the active terminal identifier, whether the passive terminal and the active terminal corresponding to the active terminal identifier are allowed to perform D2D.
  • the base station agrees that the passive terminal and the active terminal corresponding to the active terminal identifier perform D2D communication, the passive terminal and the active terminal are allocated time-frequency resources that can be used for D2D communication according to the preset resource allocation policy; otherwise, the passive terminal and the active terminal are terminated. D2D communication flow between terminals.
  • Step 206 The base station generates resource allocation indication information according to the time-frequency resource.
  • the base station after the base station allocates the time-frequency resources available for the D2D communication to the passive terminal and the active terminal according to the preset resource allocation policy, the base station generates the resource allocation indication information according to the allocated time-frequency resource, where the resource allocation indication The information is used to indicate time-frequency resources for D2D communication between the passive terminal and the active terminal.
  • Step 207 The base station returns a D2D connection establishment response message to the passive terminal, where the D2D connection establishment response message carries resource allocation indication information.
  • the base station returns a D2D connection setup response message to the passive terminal, where the D2D connection setup response message carries resource allocation indication information, where the resource allocation indication information is used to indicate that the passive terminal performs D2D communication with the active terminal. Time-frequency resources.
  • the base station when the D2D communication condition is that the passive terminal performs D2D communication with the active terminal after interrupting communication with the base station, the base station will interrupt the passive terminal after notifying the passive terminal of the time-frequency resource allocated for the passive terminal. Inter-communication; When the D2D communication condition is the communication between the passive terminal relay active terminal and the base station, the base station will continue to maintain communication with the passive terminal after notifying the passive terminal of the time-frequency resources allocated for the passive terminal.
  • Step 208 The passive terminal sends a D2D connection establishment confirmation message to the active terminal corresponding to the active terminal identifier, where the D2D connection establishment confirmation message carries the passive terminal identifier and the resource allocation indication information.
  • the passive terminal learns that the base station agrees to the D2D communication condition, and the passive terminal sends a D2D connection establishment confirmation message to the active terminal corresponding to the active terminal identifier.
  • the D2D connection establishment confirmation message carries the passive terminal identifier and the resource allocation indication information.
  • Step 209 The passive terminal and the active terminal perform D2D communication according to the resource allocation indication information.
  • the passive terminal and the active terminal perform D2D communication according to the resource allocation indication information carried in the D2D connection establishment response message returned by the base station.
  • FIG. 3 is a second implementation flowchart of a device-to-device communication method according to an embodiment of the present invention. As shown in Figure 3, the following steps are included:
  • Step 301 Receive a D2D communication request message broadcast by the active terminal.
  • the passive terminal will receive the D2D telephony request message broadcast by the active terminal.
  • the D2D communication request message carries an active terminal identifier and a D2D communication condition.
  • the active terminal identifier may be an active terminal ID, or may be other identifier information of the active terminal.
  • the D2D communication condition is used to indicate that the active terminal performs D2D communication
  • the D2D communication condition may include: the passive terminal performs an interaction with the active terminal after interrupting communication with the base station. D2D communication; or, passive terminal relay active terminal Communication with the base station.
  • steps 301! and 3012 as described below may also be included:
  • Step 3011 The passive terminal returns a D2D communication response message to the active terminal corresponding to the active terminal identifier.
  • the D2D communication response message carries a passive terminal identifier.
  • the passive terminal identifier may be a passive terminal ID, or may be other identifier information of the passive terminal.
  • the passive terminal determines whether to respond to the D2D communication request message.
  • the passive terminal may determine whether to respond to the D2D according to the D2D communication indication sent by the base station in advance.
  • the communication request message in addition, the passive terminal may also determine whether it responds to the D2D communication request message.
  • the passive terminal When the passive terminal decides to respond to the D2D communication request message, the passive terminal returns a D2D communication response message to the active terminal corresponding to the active terminal identifier carried in the D2D communication request message, where the D2D communication response message carries the passive terminal identifier.
  • the passive terminal may send the D2D communication response message at a pre-configured H-bit frequency position of the base station or a standard time-frequency position specified by the base station.
  • the D2D communication response message may further include signal receiving quality information that the passive terminal receives the D2D communication request message, where the signal receiving quality information may include: the signal noise of the passive terminal receiving the D2D communication request message Information such as ratio, signal interference ratio or received power.
  • the signal receiving quality information is: When the active terminal receives the D2D remote signal response message returned by the two or more passive terminals, the active terminal may send a D2D communication confirmation message to the passive terminal whose signal receiving quality information is greater than the preset threshold.
  • Step 3012 The passive terminal receives the D2D communication confirmation message sent by the active terminal.
  • the active terminal may further determine whether to agree to the D2D communication with the passive terminal corresponding to the passive terminal identifier. For example, the active terminal may determine whether the signal receiving quality information carried in the D2D communication response message is greater than a preset threshold. If it is greater than, the Baitong intends to perform D2D communication with the corresponding passive terminal; otherwise, disagrees with the corresponding passive terminal to perform D2D. Communication. When the active terminal agrees to perform D2D communication with the passive terminal corresponding to the passive terminal identifier, the passive terminal is identified The corresponding passive terminal sends a D2D acknowledgement message. This step can be performed, that is, the active terminal sends a D2D communication confirmation message to the passive terminal corresponding to the passive terminal identifier.
  • Step 302 Send a D2D connection establishment request message to the base station.
  • the passive terminal will send a D2D connection establishment request message to the base station.
  • the passive terminal after receiving the D2D communication confirmation message sent by the active terminal, the passive terminal can know that the active terminal agrees to perform D2D communication, and the passive terminal sends a D2D connection establishment request message to the base station.
  • the D2D connection establishment request message in step 303, the resource allocation indication information returned by the base station is received.
  • the passive terminal will receive the resource allocation indication information returned by the base station.
  • the base station before receiving the D2D connection establishment request message sent by the passive terminal, determines whether to agree to the D2D communication condition carried in the D2D connection establishment request message. For example, the base station determines whether it agrees that the passive terminal performs D2D communication with the active terminal after interrupting communication with the base station, or the base station determines whether to agree to the passive terminal relay communication between the active terminal and the base station.
  • the base station agrees to the D2D communication condition, the base station first allocates time-frequency resources for the passive terminal and the active terminal to perform D2D remote signaling according to the preset resource allocation policy, generates resource allocation indication information according to the allocated time-frequency resources, and then returns to the passive terminal.
  • the D2D connection establishment response message carries the resource allocation indication information.
  • the passive terminal receives the D2D connection setup response message returned by the base station, where the D2D connection setup response message carries resource allocation indication information, where the resource allocation indication information is used.
  • Step 304 Send the resource allocation indication information to the active terminal.
  • the passive terminal will send the resource allocation indication information to the active terminal.
  • the passive terminal after receiving the D2D connection setup response message sent by the base station, the passive terminal can know that the base station agrees to the D2D communication condition, and the passive terminal and the active terminal corresponding to the active terminal identifier send the D2D connection establishment. And the acknowledgement message, where the D2D connection establishment confirmation message carries the passive terminal identifier and the resource allocation indication information.
  • Step 305 Perform D2D communication with the active terminal on the resource indicated by the resource allocation indication information.
  • the passive terminal and the active terminal are on the resource indicated by the resource allocation indication information.
  • the line DD22DD communication letter Into the line DD22DD communication letter. .
  • the passive terminal terminal in the step of the present step, can be connected to the DD22DD connected to the base station according to the base station station to establish a standing response response message.
  • the source and source of the resource in the interest band are assigned with the indication information, and the DD22DD communication is carried out with the main active terminal terminal corresponding to the identification of the main active terminal terminal identifier. letter. .
  • FIG. 44 is a third flow diagram of the flow of the communication method according to the method for implementing the communication device in the embodiment of the present invention. . As shown in Figure 44, the package includes the following steps:
  • Step 440011 Broadcast broadcast DD22DD communication letter Please request to cancel the message. .
  • the main active terminal will send a broadcast message to the DD22DD communication message requesting cancellation of the message. .
  • the main active end terminal when the main active end terminal has the need to establish a DD22DD communication link connection, the main active The terminal terminal may be able to broadcast the DD22DD communication message in accordance with the preset preset power rate. Please request the message to be cancelled, and the DD22DD communication message is requested to request the message to be carried in the message.
  • the DD22DD communication cradle condition component may be after the communication terminal between the passive end terminal and the base base station station.
  • the active terminal device performs the DD22DD communication message; or alternatively, the relay terminal in the passive terminal terminal relays the communication between the active terminal terminal and the base station. .
  • step steps 44001111 and 44001122 as described below in a step-by-step package:
  • Step 44001111 The DD22DD remote signal response of the main active terminal termination receiving and receiving back to the passive terminal shall be cancelled. .
  • step of this step when the main active end terminal is broadcasting the DD22DD remote signal in accordance with the preset preset power rate, please request cancellation.
  • the DD22DD communication signal response received by the passive terminal terminal is returned to the message, and the DD22DD communication signal response should be carried in the message. Carrying the identification with the end of the passive terminal. .
  • the main active terminal if, if the main active end terminal is successfully connected to receive the received DD22DD sent by the passive terminal terminal The letter response should respond to the message, then the main active terminal will stop and stop sending and sending DD22DD remote message, please request to cancel the message, or else, the main active terminal will The DD22DD communication message will be sent and sent according to the preset pre-set cycle period. Please request to cancel the message. .
  • the main active end terminal when the main active end terminal broadcasts the DD22DD communication message, please request the message, then there may be one or more Or more than one of the received DD22DD communication messages, please request the message to be revoked, and the DD22DD communication message is expected to be communicated with the main active terminal terminal, because of this,
  • the main active end terminal has the possibility to be able to receive the same one or more than one received by the passive terminal.
  • the main active terminal termination when the main active terminal termination receives the DD22DD received by one or more than one passive terminal, the DD22DD is returned.
  • the active terminal may directly send a D2D communication confirmation message to each corresponding passive terminal according to the passive terminal identifier carried in the D2D communication response message.
  • the active terminal when the active terminal receives the D2D communication response message returned by the multiple passive terminals, the active terminal may also broadcast a D2D communication confirmation message to the passive terminal that meets the preset condition. In order to distinguish each passive terminal, the broadcasted D2D communication confirmation message may carry a passive terminal identifier.
  • the active terminal may also determine whether to agree to the D2D communication with the passive terminal corresponding to the passive terminal identifier. For example, the active terminal may determine whether the signal receiving quality information carried in the D2D communication response message is greater than a preset threshold, and if yes, agree to perform D2D communication with the corresponding passive terminal; otherwise, disagree with the corresponding passive terminal for D2D remote signaling. .
  • the step may be performed, that is, the active terminal sends a D2D communication confirmation message to the passive terminal corresponding to the passive terminal identifier.
  • the signal receiving quality information may include: information that the passive terminal receives the signal to noise ratio, the signal to interference ratio, or the received power of the D2D communication request message.
  • Step 402 Receive resource allocation indication information of the base station provided by the passive terminal.
  • the active terminal will receive the resource allocation indication information sent by the base station provided by the passive terminal.
  • the passive terminal before the step, after receiving the D2D connection setup response message sent by the base station, the passive terminal can learn that the base station agrees to the D2D communication condition, and the passive terminal sends the D2D connection establishment to the active terminal corresponding to the active terminal identifier. Confirm the message.
  • the active terminal receives the D2D connection establishment confirmation message sent by the passive terminal, where the D2D connection establishment confirmation message carries the passive terminal identifier and the resource allocation indication information, where the resource allocation indication information is used to indicate the location The time-frequency resource for D2D communication by the passive terminal.
  • Step 403 Perform D2D communication with the passive terminal on the resource indicated by the resource allocation indication information.
  • the active terminal performs D2D communication on the resource indicated by the resource allocation indication information according to the passive terminal corresponding to the passive terminal identifier according to the resource allocation indication information.
  • the D2D communication is performed according to the resource allocation indication information carried in the D2D connection establishment confirmation message and the passive terminal corresponding to the passive terminal identifier.
  • FIG. 5 is a flowchart of a fourth implementation of a device-to-device communication method according to an embodiment of the present invention. As shown in Figure 5, the following steps are included:
  • Step 501 Receive a D2D connection establishment request message sent by the passive terminal.
  • the base station will receive the D2D connection establishment request message sent by the passive terminal.
  • the D2D connection establishment request message carries a D2D communication condition.
  • the passive terminal receives the D2D communication request message broadcasted by the active terminal, where the D2D communication request message carries the active terminal identifier and the D2D communication condition, and the passive terminal confirms the active terminal corresponding to the active terminal identifier.
  • the passive terminal sends a D2D connection establishment request message to the base station.
  • the base station receives a D2D connection establishment request message sent by the passive terminal, and the D2D connection establishment request message carries a D2D communication condition.
  • steps 5011 and 5012 as described below may be further included:
  • Step 5011 When the base station agrees to the D2D communication condition, the base station allocates time-frequency resources available for D2D communication to the passive terminal and the active terminal according to the preset resource allocation policy.
  • the base station when the base station agrees to the D2D remote signaling condition, for example, when the base station agrees that the passive terminal performs the D2D communication with the active terminal after interrupting the communication with the base station, or when the base station agrees to the passive terminal relay initiative
  • the base station allocates time-frequency resources that can be used for D2D remote signaling to the passive terminal and the active terminal according to the preset resource allocation policy; when the base station does not agree with the D2D communication condition, the terminal ends between the passive terminal and the active terminal.
  • the D2D communication process when the base station agrees that the passive terminal performs the D2D communication with the active terminal after interrupting the communication with the base station, or when the base station agrees to the passive terminal relay initiative
  • the base station when the D2D communication condition is that the passive terminal performs D2D communication with the active terminal after interrupting communication with the base station, after the base station notifies the passive terminal of the time-frequency resource allocated for the passive terminal, the base station between the interrupt and the passive terminal.
  • the D2D communication condition is the communication between the passive terminal relay active terminal and the base station, the base station will continue to maintain communication with the passive terminal after notifying the passive terminal of the time-frequency resource allocated for the passive terminal.
  • the active terminal identifier may be further carried in the D2D connection establishment request message.
  • the base station may further determine whether to agree to the passive terminal according to the active terminal identifier.
  • the active terminal corresponding to the active terminal identifier performs D2D communication.
  • the base station agrees that the passive terminal performs D2D communication with the active terminal corresponding to the active terminal identifier, the passive terminal and the active terminal are allocated for D2D communication according to the preset resource allocation policy. Frequency resource; Nobe ends the D2D communication process between the passive terminal and the active terminal.
  • Step 5012 The base station generates resource allocation indication information according to the time-frequency resource.
  • the base station after the base station allocates the time-frequency resources available for the D2D communication to the passive terminal and the active terminal according to the preset resource allocation policy, the base station generates the resource allocation indication information according to the allocated time-frequency resource, where the resource allocation indication The information is used to indicate the time-frequency resources of the passive terminal and the active terminal for D2D communication.
  • Step 502 Send resource allocation indication information for D2D communication to the passive terminal.
  • the base station will transmit resource allocation indication information for D2D communication to the passive terminal.
  • the base station returns a D2D connection setup response message to the passive terminal, where the D2D connection setup response message carries resource allocation indication information, where the resource allocation indication information is used to indicate the passive terminal.
  • the device-to-device communication method is provided in the embodiment of the present invention.
  • the passive terminal After receiving the D2D communication request message carrying the active terminal identifier and the D2D communication condition broadcasted by the active terminal, the passive terminal sends the D2D carrying the D2D remote signaling condition to the base station.
  • a connection establishment request message when the base station agrees to the D2D communication condition, the passive terminal receives the D2D connection establishment response message returned by the base station, and the D2D connection establishment response message carries the resource allocation indication information, and the passive terminal according to the resource allocation indication information and the active
  • the active terminal corresponding to the terminal identifier performs D2D communication.
  • the D2D connection establishment request message is first sent to the base station, and then the base station allocates the available for the passive terminal and the active terminal.
  • the time-frequency resource for D2D communication is performed, so that the base station can effectively participate in the D2D communication process between the active terminal and the passive terminal, and perform corresponding control on the D2D communication process.
  • the base station can control the D2D communication process of the active terminal and the passive terminal, when the passive terminal can communicate with the base station, and the active terminal is not within the coverage of the base station, the active terminal can pass The relay of the passive terminal communicates with the base station, so that the base station can extend the coverage of the active terminal through the passive terminal, and realize the end of the network system. Extended coverage of the end.
  • FIG. 6 is a schematic structural diagram of a passive terminal according to an embodiment of the present invention. As shown in FIG. 6, the method includes: a first receiving unit 601, a first sending unit 602, and a first communication unit 603;
  • the first receiving unit 601 is configured to receive a device-to-device D2D communication request message broadcasted by the active terminal, to send the D2D communication request message to the first sending unit 602, and to receive the resource returned by the base station. Allocating the indication information, and sending the resource allocation indication information to the first sending unit 602 and the first communication unit 603;
  • the first sending unit 602 is configured to send a D2D connection establishment request message to the base station, and is further configured to send resource allocation indication information to the active terminal;
  • the first communication unit 603 is configured to perform D2D communication with the active terminal on the resource indicated by the resource allocation indication information.
  • the first receiving unit 601 is further configured to send the D2D communication request message to the first sending unit 602, and further configured to receive a D2D communication confirmation message sent by the active terminal, and send the D2D remote message confirmation message. Giving the first sending unit 602;
  • the first sending unit 60 is further configured to return, to the active terminal corresponding to the active terminal identifier, a D2D communication response message carrying a passive terminal identifier.
  • D2D communication conditions include:
  • the passive terminal performs D2D communication with the active terminal after interrupting communication with the base station; or, the passive terminal relays the remote communication between the active terminal and the base station.
  • FIG. 7 is a schematic structural diagram of an active terminal according to an embodiment of the present invention. As shown in FIG. 7, the second sending unit 701, the second receiving unit 702, and the second remote unit 703 are included;
  • the second sending unit 701 is configured to send a device-to-device D2D communication request message
  • the second receiving unit 702 is configured to receive resource allocation indication information of the base station provided by the passive terminal, and send the D2D connection establishment confirmation message to the Said second communication unit 703;
  • the second communication unit 703 is configured to perform D2D communication with the passive terminal on the resource indicated by the resource allocation indication information.
  • the second receiving unit 702 is further configured to receive the passive terminal identifier returned by the passive terminal
  • the D2D communication response message, the D2D communication response message is sent to the second sending unit 701;
  • the second sending unit 701 is further configured to send a D2D communication confirmation message to the passive terminal corresponding to the passive terminal identifier.
  • the D2D communication response message further carries signal receiving quality information that the passive terminal receives the D2D communication request message
  • the second sending unit 701 is further configured to: when receiving the D2D communication response message returned by the two or more passive terminals, send a D2D communication confirmation message to the passive terminal whose signal receiving quality information is greater than a preset threshold.
  • FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 8, the method includes: a third receiving unit 801, and a third sending unit 804;
  • the second receiving unit 801 is configured to receive a device-to-device D2D connection establishment request message sent by the passive terminal;
  • the third sending unit 804 is configured to send resource allocation indication information for D2D communication to the passive terminal.
  • the base station may further include: a resource allocation unit 802 and an indication information generating unit 803;
  • the second receiving unit 801 is further configured to send the D2D connection establishment request message to the resource allocation unit 802;
  • the resource allocation unit 802 is configured to: when the D2D communication condition is approved, allocate the time-frequency resource that can be used for the D2D remote signal to the passive terminal and the active terminal according to the preset resource allocation policy, and notify the frequency resource. Giving the indication information generating unit 803',
  • the indication information generating unit 803 generates a resource allocation indication information according to the time-frequency resource, and sends the resource allocation indication information to the third sending unit 804;
  • the third sending unit 804 is further configured to return, to the passive terminal, a D2D connection setup response message that carries the resource allocation indication information.
  • the base station may further include a communication control unit 805;
  • the third receiving unit 801 is further configured to send the D2D connection establishment request message to the Communication control unit 805;
  • the communication control unit 805 is configured to: when the D2D communication condition is that the passive terminal performs D2D communication with the active terminal after interrupting communication with the base station, interrupt communication with the passive terminal;
  • the D2D communication condition is that when the passive terminal relays communication between the active terminal and the base station, communication with the passive terminal is maintained.
  • the passive terminal sends a D2D connection carrying the D2D communication condition to the base station after receiving the D2D communication request message carrying the active terminal identifier and the D2D communication condition broadcasted by the active terminal.
  • Establishing a request message when the base station agrees to the D2D communication condition, the passive terminal receives the D2D connection setup response message returned by the base station, where the D2D connection setup response message carries the resource allocation indication information, and the passive terminal according to the resource allocation indication information and the active terminal Identify the corresponding active terminal for D2D communication.
  • the D2D connection establishment request message is first sent to the base station, and then the base station allocates the available for the passive terminal and the active terminal.
  • the time-frequency resource for D2D communication is performed, so that the base station can effectively participate in the D2D communication process between the active terminal and the passive terminal, and perform corresponding control on the D2D communication process.
  • the base station can control the D2D communication process of the active terminal and the passive terminal, when the passive terminal can communicate with the base station, but the active terminal is not within the coverage of the base station, the active terminal can pass the passive terminal.
  • the relay communicates with the base station, so that the base station can extend the coverage of the active terminal through the passive terminal, thereby realizing the extended coverage of the network system by the network system.
  • FIG. 9 is a schematic structural diagram of a device-to-device remote signaling system according to an embodiment of the present invention. As shown in FIG. 9, the system includes a passive terminal 901, an active terminal 902, and a base station 903, where
  • the passive terminal 901 is configured to receive a device-to-device D2D communication request message broadcast by the active terminal 902.
  • the base station 903 sends a D2D connection establishment request message, receives the resource allocation indication information returned by the base station 903, and sends the resource to the active terminal 902. Allocating indication information; performing D2D communication with the active terminal 902 on the resource indicated by the resource allocation indication information;
  • the active terminal 902 in the broadcast of the D2D communication request message, receives the resource allocation indication information of the base station provided by the passive terminal 901, and the resource terminal in the passive terminal 901 Performing D2D communication on the resource indicated by the indication information;
  • the base station 903 is configured to receive the D2D connection establishment request message sent by the passive terminal 901, and send resource allocation indication information for D2D communication to the passive terminal 901.
  • the D2D communication request message carries an active terminal identifier and a D2D communication condition.
  • the D2D connection establishment request message carries the D2D communication condition.
  • the passive terminal 901 is further configured to: return, to the active terminal 902 corresponding to the active terminal identifier, a D2D communication response message carrying a passive terminal identifier, and receive a D2D communication confirmation message sent by the active terminal 902;
  • the active terminal 902 is further configured to receive the D2D communication response message returned by the passive terminal 901, and send the D2D communication confirmation message to the passive terminal 901 corresponding to the passive terminal identifier.
  • the base station 903 is further configured to allocate time-frequency resources for performing D2D communication to the passive terminal 901 and the active terminal 902 according to a preset resource allocation policy when the D2D communication condition is agreed, according to the time-frequency.
  • the resource generates resource allocation indication information.
  • the passive terminal sends the D2D carrying the D2D remote signaling condition to the base station after receiving the D2D communication request message carrying the active terminal identifier and the D2D communication condition broadcasted by the active terminal.
  • a connection establishment request message when the base station agrees to the D2D communication condition, the passive terminal receives the D2D connection establishment response message returned by the base station, and the D2D connection establishment response message carries the resource allocation indication information, and the passive terminal according to the resource allocation indication information and the active
  • the active terminal corresponding to the terminal identifier performs D2D communication.
  • the D2D connection establishment request message is first sent to the base station, and then the base station allocates the available for the passive terminal and the active terminal.
  • the time-frequency resource for D2D communication is performed, so that the base station can effectively participate in the D2D communication process between the active terminal and the passive terminal, and perform corresponding control on the D2D communication process.
  • the base station can control the D2D communication process of the active terminal and the passive terminal, when the passive terminal can communicate with the base station, the active terminal is not covered by the base station.
  • the active terminal can communicate with the base station through the relay of the passive terminal, so that the base station can extend the coverage of the active terminal through the passive terminal, and realize the extended coverage of the network system to the terminal.
  • FIG. 6 For the specific working process of the device embodiment shown in FIG. 6, FIG. 7 and FIG. 8, please refer to the corresponding description in the method embodiments shown in FIG. 3, FIG. 4 and FIG. 5, and details are not described herein again.

Abstract

一种设备到设备的通信方法、装置、系统、计算机程序及存储介质。其中的通信方法包括:主动终端广播D2D通信请求消息;被动终端向基站发送D2D连接建立请求消息;被动终端接收基站返回的资源分配指示信息;被动终端向与主动终端发送资源分配指示信息;被动终端与主动终端在资源分配指示信息指示的资源上进行D2D通信。本发明提出的设备到设备的通信方法、装置、系统、计算机程序及存储介质,能够实现基站对主动终端和被动终端之间的D2D通信过程的控制。

Description

本发明涉及无线通信技术, 特别涉及一种设备到设备的通信方法、装置 系统、 算机程序及存储介质。
设备到设备 (Device to Device, D2D ) 通信是指用户终端之间不需要通 过基站进行数据转发而直接进行的通信, 传统的 D2D技术包括蓝牙, 直接无 线上网 WiFi- Direct等。
目前, 蜂窝网络不具备 D2D通信的功能, 终端之间迸行通信必须通过基 站转发数据。在蜂窝网络中引入 D2D技术, 能够使得距离较近的终端彼此互 相发现并直接进行数据传输, 这样不仅可以节省空口资源与核心网资源, 而 且还可以提供新的业务, 如对战游戏、 近距离广播以及机器到机器(Madime to Machine, M2M) 通信等。 因此, 目前有一些公司开始研究如何使得蜂窝 网络能够支持 D2D功能。
图 i为现有技术中设备到设备的通信方法的实现流程图。 如图 1所示, 包括如下所述的歩骤:
歩骤 101 :主动终端广播 D2D通信请求消息,所述 D2D通信请求消息中 携带有主动终端标识。
步骤 102 : 被动终端向与主动终端标识对应的主动终端返回 D2D通信响 应消息, 所述 D2D通信响应消息中携带有被动终端标识。
在本步骤中, 如果被动终端激活了用于 D2D通信的 D2D探测接收模块, 并 i被动终端在主动终端的通信距离之内, 则被动终端会接收到主动终端的 D2D通信请求消息,如果被动终端期望与主动终端进行 D2D通信, 则被动终 端向与主动终端标识对应的主动终端返回 D2D通信响应消息, 所述 D2D通 信响应中携带有被动终端标识。
步骤 103 : 主动终端向与被动终端标识对应的被动终端发送 D2D通信确 认消息。 步骤 104: 主动终端与被动终端协商双方在 D2D通信过程中所使用的时 频资源。
步骤 105: 主动终端和被动终端使用协商后的时频资源进行 D2D通信。 在实现本发明的过程中, 发明人发现现有技术中至少存在如下问题: 在现有的主动终端和被动终端之间的 D2D通信过程中没有基站的参与, 导致无法实现基站对主动终端和被动终端之间的 D2D通信过程的控制。另外, 由于 D2D通信过程中没有基站的参与, 因此也难以实现网络系统对终端的扩 展覆盖。 例如, 当主动终端 A不在基站的覆盖范围内, 而被动终端 B却可以 与基站进行通信日寸, 主动终端 A无法直接与基站的通信, 也无法通过被动终 端 B与基站进行通信,从而使得基站无法通过被动终端 B对主动终端 A进行 扩展覆盖。
有鉴于此, 本发明的主要目的在于提供 种设备到设备的通信方法, 能 够实现基站对主动终端和被动终端之间的 D2D通信过程的控制。
本发明的另一目的在于提供三种设备到设备的通信装置, 能够实现基站 对主动终端和被动终端之间的 D2D通信过程的控制。
本发明的又一目的在于提供一种设备到设备的通信系统, 能够实现基站 对主动终端和被动终端之间的 D2D通信过程的控制。
本发明的又一目的在于提供三种计算机程序, 能够实现基站对主动终端 和被动终端之间的 D2D遥信过程的控制。
本发明的又一目的在于提供三种存储介质, 能够实现基站对主动终端和 被动终端之间的 D2D通信过程的控制。
为达到上述目的, 本发明的技术方案是这样实现的:
一种设备到设备的通信方法, 所述方法包括:
接收主动终端广播的设备到设备 D2D通信请求消息;
^基站发送 D2D连接建立请求消息;
接收所述基站返回的资源分配指示信息;
^主动终端发送所述资源分配指示信息; 与主动终端在所述资源分配指示信息指示的资源上进行 D2D通信。
一种设备到设备的通信方法, 所述方法包括:
广播设备到设备 D2D通信请求消息;
接收被动终端提供的基站的资源分配指示信息;
与被动终端在所述资源分配指示信息指示的资源上迸行 D2D通信。
一种设备到设备的通信方法, 所述方法包括:
接收被动终端发送的设备到设备 D2D连接建立请求消息;
向所述被动终端发送用于 D2D通信的资源分配指示信息。
一种被动终端, 包括: 第一接收单元、 第一发送单元和第一通信单元; 所述第一接收单元, 用于接收主动终端广播的设备到设备 D2D通信请求 消息, 将所述 D2D通信请求消息发送给所述第一发送单元; 还用于接收基站 返回的资源分配指示信息, 将所述资源分配指示信息发送给所述第一发送单 元和所述第一通信单元;
所述第一发送单元, 用于向所述基站发送 D2D连接建立请求消息; 还用 于向主动终端发送资源分配指示信息;
所述第一通信单元, 用于与主动终端在所述资源分配指示信息指示的资 源上进行 D2D通信。
一种主动终端, 包括: 第二发送单元、 第二接收单元和第二通信单元; 所述第二发送单元, ^于广播设备到设备 D2D通信请求消息;
所述第二接收单元,用于接收被动终端提供的基站的资源分配指示信息, 将所述资源分配指示信息发送给所述第二遥信单元;
所述第二通信单元, 用于与被动终端在所述资源分配指示信息指示的资 源上进行 D2D通信。
一种基站, 包括: 第三接收单元和第三发送单元;
所述第三接收单元, 用于接收被动终端发送的设备到设备 D2D连接建立 请求消息;
所述第三发送单元, 用于向所述被动终端发送 ^于 D2D通信的述资源分 配指示信息。
一种设备到设备的通信系统, 包括被动终端、 主动终端和基站, 其中, 所述被动终端,用于接收主动终端广播的设备到设备 D2D通信请求消息, 向基站发送 D2D连接建立请求消息,接收所述基站返回的资源分配指示信息, 向主动终端发送资源分配指示信息, 与主动终端在所述资源分配指示信息指 示的资源上进行 D2D通信;
所述主动终端, 用于广播所述 D2D通信请求消息, 接收所述被动终端提 供的基站的资源分配指示信息, 与所述被动终端在所述资源分配指示信息指 示的资源上进行 D2D通信;
所述基站, 用于接收所述被动终端发送的所述 D2D连接建立请求消息, 向所述被动终端发送用于 D2D通信的资源分配指示信息。
一种计算机程序, 用于执行设备到设备的通信方法, 所述方法包括: 接收主动终端广播的设备到设备 D2D通信请求消息;
向基站发送 D2D连接建立请求消息;
接收所述基站返回的资源分配指示信息;
向主动终端发送所述资源分配指示信息;
与主动终端在所述资源分配指示信息指示的资源上进行 D2D通信。
一种存储介质, 用于存储计算机程序, 所述计算机程序用于执行设备到 设备的通信方法, 所述方法包括:
接收主动终端广播的设备到设备 D2D通信请求消息;
向基站发送 D2D连接建立请求消息;
接收所述基站返回的资源分配指示信息;
向主动终端发送所述资源分配指示信息;
与主动终端在所述资源分配指示信息指示的资源上进行 D2D通信。
一种计算机程序, 用于执行设备到设备的遥信方法, 所述方法包括: 广播设备到设备 D2D通信请求消息;
接收被动终端提供的基站的资源分配指示信息;
与被动终端在所述资源分配指示信息指示的资源上进行 D2D通信。
一种存储介质, 用于存储什算机程序, 所述计算机程序, 用于执行设备 到设备的通信方法, 所述方法包括:
广播设备到设备 D2D通信请求消息; 接收被动终端提供的基站的资源分配指示信息;
与被动终端在所述资源分配指示信息指示的资源上进行 D2D通信。 一种计算机程序, 用于执行设备到设备的通信方法, 所述方法包括: 接收被动终端发送的设备到设备 D2D连接建立请求消息;
向所述被动终端发送用于 D2D通信的资源分配指示信息。
一种存储介质, 用于存储计算机程序, 所述计算机程序用于执行设备到 设备的通信方法, 所述方法包括:
接收被动终端发送的设备到设备 D2D连接建立请求消息;
向所述被动终端发送用于 D2D通信的资源分配指示信息。
可见, 采用本发明实施例中提供的技术方案, 被动终端在接收到主动终 端广播的携带有主动终端标识和 D2D通信条件的 D2D通信请求消息之后, 向基站发送携带有 D2D通信条件的 D2D连接建立请求消息,当基站同意 D2D 遥信条件时, 被动终端接收基站返回的 D2D连接建立响应消息, 所述 D2D 连接建立响应消息中携带有资源分配指示信息, 被动终端根据该资源分配指 示信息与主动终端标识对应的主动终端进行 D2D通信。由于被动终端没有按 照现有技术中的方法直接与主动终端协商 D2D 通信过程中所使用的时频资 源, 而是首先向基站发送 D2D连接建立请求消息, 然后由基站为被动终端和 主动终端分配可 ^于进行 D2D通信的时频资源,从而使得基站可以有效地参 与到主动终端和被动终端之间的 D2D通信过程中, 并对该 D2D通信过程迸 行相应的控制。
更进一步的, 由于基站可以对主动终端与被动终端的 D2D通信过程进行 控制, 因此, 当被动终端可以与基站进行通信, 而主动终端却不在基站的覆 盖范围内时, 主动终端将可以通过被动终端的中继而与基站迸行通信, 从而 使得基站可以通过被动终端对主动终端进行扩展覆盖, 实现了网络系统对终
¾白 ί) 覆盖。
图 1为现有技术中设备到设备的通信方法的实现流程示意图。
图 2为本发明实施例中设备到设备的通信方法的第一实现流程示意图。 图 3为本发明实施例中设备到设备的通信方法的第二实 程示意图。 图 4为本发明实施例中设备到设备的通信方法的第三实现流程示意图 图 5为本发明实施例中设备到设备的通信方法
Figure imgf000008_0001
图 6为本发明实施例中被动终端的结构示意图。
图 7为本发明实施例中主动终端的结构示意图。
图 8为本发明实施例中基站的结构示意图。
图 9为本发明实施例中设备到设备的通信系统的结构示意图
针对现有技术中存在的问题, 本发明实施例中提出一种改迸后的设备到 设备的通信方案,能够实现基站对主动终端和被动终端之间的 D2D通信过程 的控制。
为使本发明的技术方案更加清楚、 明白, 以下参照附图并举实施例, 对 本发明实施例中所述方案作进一步地详细说明。
图 2为本发明实施例中设备到设备的通信方法的第一实现流程图。如图 2 所示, 包括以下步骤:
歩骤 201 ; 主动终端广播 D2D通信请求消息,所述 D2D通信请求消息中 携带有主动终端标识和 D2D通信条件。
在本发明的具体实施例中, 所述主动终端标识可以是主动终端 ID, 也可 以是主动终端的其他标识信息。
另外, 在本发明的具体实施例中, 所述 D2D通信条件用于表示主动终端 进行 D2D遥信的原因, 所述 D2D通信条件可以包括: 被动终端在中断与基 站之间的通信之后与主动终端迸行 D2D遥信; 或者, 被动终端中继主动终端 与基站之间的通信。
歩骤 202: 被动终端向与主动终端标识对应的主动终端返回 D2D通信响 应消息, 所述 D2D通信响应消息中携带有被动终端标识。
在本发明的具体实施例中, 所述被动终端标识可以是被动终端 ID, 也可 以是被动终端的其他标识信息。 在本歩骤中, 当被动终端在接收到主动终端 发送的 D2D通信请求消息之后, 被动终端判断是否响应 D2D通信请求消息, 具体实施中,被动终端可以根据基站预先发送的 D2D通信指示判断是否响应 D2D通信请求消息, 另外, 被动终端也可以自身判断是否响应 D2D通信请求 消息。 当被动终端决定响应 D2D通信请求消息日寸, 被动终端向与 D2D通信 请求消息中携带的主动终端标识对应的主动终端返回 D2D通信响应消息,所 述 D2D通信响应消息中携带有被动终端标识。
具体实施中, 被动终端可以在基站预先配置的时频位置或者标准规定的 0寸频位置上发送所述 D2D通信响应消息。
具体实施中, 所述 D2D通信响应消息中还可携带有被动终端接收 D2D 通信请求消息的信号接收质量信息, 其中, 所述信号接收质量信息可以包括: 被动终端接收到 D2D通信请求消息的信噪比、信号干扰比或者接收功率等信 息。 所述信号接收质量信息用于当主动终端接收到两个以上被动终端返回的 D2D通信响应消息时, 主动终端可以向信号接收质量信息大于预设阈值的被 动终端发送 D2D通信确认消息。
步骤 203: 主动终端向与被动终端标识对应的被动终端发送 D2D通信确 认消息。
在实际应用场景中, 当主动终端广播 D2D通信请求消息之后, 有可能会 有一个或多个收到 D2D通信请求消息的被动终端期望与主动终端进行 D2D 通信, 因此主动终端有可能会同时接收到一个或多个被动终端返回的携带有 被动终端标识的 D2D通信响应消息。
所以, 在本步骤中, 当主动终端接收到一个或多个被动终端返回的 D2D 遥信响应消息时,该主动终端可直接根据 D2D通信响应消息中所携带的被动 终端标识, 向对应的各个被动终端分别发送 D2D通信确认消息。
具体实施中, 当主动终端接收到多个被动终端返回的 D2D通信响应消息 时, 主动终端也可以向满足预设条件的被动终端广播 D2D通信确认消息。 为 了区分各个被动终端,所述被广播的 D2D通信确认消息中可携带被动终端标 识。
具体实施中, 在本步骤之前, 主动终端在接收到被动终端发送的 D2D通 信响应消息之后, 主动终端还可以判断是否同意与被动终端标识对应的被动 终端进行 D2D通信。 例如, 主动终端可以判断 D2D通信响应消息中携带的 信号接收质量信息是否大于预设阈值, 如果大于, 则同意与对应的被动终端 进行 D2D通信; 否则, 不同意与对应的被动终端进行 D2D通信。 当主动终 端同意与被动终端标识对应的被动终端进行 D2D通信时, 即可执行本步骤, 即主动终端向与被动终端标识对应的被动终端发送 D2D通信确认消息。
步骤 204: 被动终端向基站发送 D2D连接建立请求消息,所述 D2D连接 建立请求消息中携带有 D2D通信条件。
在本步骤中,被动终端在接收到主动终端发送的 D2D通信确认消息之后, 即可获知主动终端同意迸行 D2D通信, 此日寸被动终端向基站发送 D2D连接 建立请求消息, 所述 D2D连接建立请求消息中携带有 D2D通信条件。
步骤 205: 当基站同意 D2D通信条件时, 基站按照预设资源分配策略为 被动终端与主动终端分配可用于 D2D通信的时频资源。
在本歩骤中, 当基站同意 D2D遥信条件时, 例如, 当基站同意被动终端 在中断与基站之间的通信之后与主动终端进行 D2D通信 H寸, 或者, 当基站同 意被动终端中继主动终端与基站之间的通信时, 基站按照预设资源分配策略 为被动终端与主动终端分配可用于 D2D遥信的时频资源;当基站不同意 D2D 通信条件时, 结束被动终端与主动终端之间的 D2D遥信流程。
具体实施中,在所述 D2D连接建立请求消息中还可以携带主动终端标识, 在本歩骤中, 基站还可以进一步根据主动终端标识判断是否同意被动终端与 主动终端标识对应的主动终端迸行 D2D遥信, 当基站同意被动终端与主动终 端标识对应的主动终端进行 D2D通信时,按照预设资源分配策略为被动终端 与主动终端分配可用于 D2D通信的时频资源; 否则, 结束被动终端与主动终 端之间的 D2D通信流程。
歩骤 206; 基站根据时频资源生成资源分配指示信息。
在本步骤中, 基站在按照预设资源分配策略为被动终端与主动终端分配 可用于 D2D通信的时频资源之后,根据所分配的时频资源生成资源分配指示 信息, 其中, 所述资源分配指示信息用于指示被动终端与主动终端进行 D2D 通信的时频资源。
步骤 207: 基站向被动终端返回 D2D连接建立响应消息,所述 D2D连接 建立响应消息中携带有资源分配指示信息。 在本步骤中, 基站向被动终端返回 D2D连接建立响应消息, 所述 D2D 连接建立响应消息中携带有资源分配指示信息, 其中, 所述资源分配指示信 息用于指示被动终端与主动终端进行 D2D通信的时频资源。
进一步的, 当 D2D通信条件为被动终端在中断与基站之间的通信之后与 主动终端进行 D2D通信日寸,基站在将为被动终端分配的时频资源通知被动终 端之后, 将中断与被动终端之间的通信; 当 D2D通信条件为被动终端中继主 动终端与基站之间的通信时, 基站在将为被动终端分配的时频资源通知被动 终端之后, 将继续保持与被动终端之间的通信。
步骤 208: 被动终端向与主动终端标识对应的主动终端发送 D2D连接建 立确认消息,所述 D2D连接建立确认消息中携带有被动终端标识和资源分配 指示信息。
在本歩骤中,被动终端在接收到基站发送的 D2D连接建立响应消息之后, 获知基站同意 D2D通信条件,此时被动终端向与主动终端标识对应的主动终 端发送 D2D连接建立确认消息, 所述 D2D连接建立确认消息中携带有被动 终端标识和资源分配指示信息。
步骤 209: 被动终端和主动终端根据资源分配指示信息进行 D2D通信。 在本步骤中, 被动终端和主动终端根据基站返回的 D2D连接建立响应消 息中携带的资源分配指示信息进行 D2D通信。
图 3为本发明实施例中设备到设备的通信方法的第二实现流程图。如图 3 所示, 包括以下步骤:
歩骤 301 ; 接收主动终端广播的 D2D通信请求消息。
在本歩骤中, 被动终端将接收主动终端广播的 D2D遥信请求消息。
具体实施中, 所述 D2D通信请求消息中携带有主动终端标识和 D2D通 信条件。
具体实施中, 在本发明的具体实施例中, 所述主动终端标识可以是主动 终端 ID, 也可以是主动终端的其他标识信息。
另外, 在本发明的具体实施例中, 所述 D2D通信条件用于表示主动终端 进行 D2D通信的原因, 所述 D2D通信条件可以包括: 被动终端在中断与基 站之间的通信之后与主动终端进行 D2D通信; 或者, 被动终端中继主动终端 与基站之间的通信。
另外, 在本发明的具体的实施例中, 在上述步骤 301之后, 步骤 302之 前, 还可以包括如下所述的步骤 301!和 3012:
步骤 3011 :被动终端向与主动终端标识对应的主动终端返回 D2D通信响 应消息。
具体实施中, 所述 D2D通信响应消息中携带有被动终端标识。
在本发明的具体实施例中, 所述被动终端标识可以是被动终端 ID, 也可 以是被动终端的其他标识信息。 在本步骤中, 当被动终端在接收到主动终端 发送的 D2D通信请求消息之后, 被动终端判断是否响应 D2D通信请求消息, 具体实施中,被动终端可以根据基站预先发送的 D2D通信指示判断是否响应 D2D通信请求消息, 另外,被动终端也可以自身判断是否响应 D2D通信请求 消息。 当被动终端决定响应 D2D通信请求消息时, 被动终端向与 D2D通信 请求消息中携带的主动终端标识对应的主动终端返回 D2D通信响应消息,所 述 D2D通信响应消息中携带有被动终端标识。
具体实施中, 被动终端可以在基站预先配置的 H寸频位置或者标准规定的 时频位置上发送所述 D2D通信响应消息。
具体实施中, 所述 D2D通信响应消息中还可携带有被动终端接收 D2D 通信请求消息的信号接收质量信息, 其中, 所述信号接收质量信息可以包括: 被动终端接收到 D2D通信请求消息的信噪比、信号千扰比或者接收功率等信 息。 所述信号接收质量信息 ^于当主动终端接收到两个以上被动终端返回的 D2D遥信响应消息时, 主动终端可以向信号接收质量信息大于预设阈值的被 动终端发送 D2D通信确认消息。
歩骤 3012: 被动终端接收主动终端发送的 D2D通信确认消息。
具体实施中, 在本步骤之前, 主动终端在接收到被动终端发送的 D2D通 信响应消息之后, 主动终端还可以判断是否同意与被动终端标识对应的被动 终端进行 D2D通信。 例如, 主动终端可以判断 D2D通信响应消息中携带的 信号接收质量信息是否大于预设阈值, 如果大于, 贝桐意与对应的被动终端 进行 D2D通信; 否则, 不同意与对应的被动终端迸行 D2D通信。 当主动终 端同意与被动终端标识对应的被动终端迸行 D2D通信时, 向与被动终端标识 对应的被动终端发送 D2D确认消息。 即可执行本步骤, 即主动终端向与被动 终端标识对应的被动终端发送 D2D通信确认消息。
步骤 302: 向基站发送 D2D连接建立请求消息。
在本步骤中, 被动终端将向基站发送 D2D连接建立请求消息。
具体实施中, 在本步骤中, 被动终端在接收到主动终端发送的 D2D通信 确认消息之后, 即可获知主动终端同意进行 D2D通信, 此时被动终端向基站 发送 D2D连接建立请求消息。 具体实施中, 所述 D2D连接建立请求消息中 步骤 303 : 接收基站返回的资源分配指示信息。
在本步骤中, 被动终端将接收基站返回的资源分配指示信息。
具体实施中, 在本步骤之前, 基站在接收到被动终端发送的 D2D连接建 立请求消息之后, 判断是否同意 D2D连接建立请求消息中携带的 D2D通信 条件。 例如, 基站判断是否同意被动终端在中断与基站之间的通信之后与主 动终端进行 D2D通信, 或者, 基站判断是否同意被动终端中继主动终端与基 站之间的通信。 当基站同意 D2D通信条件时, 基站首先按照预设资源分配策 略为被动终端与主动终端迸行 D2D遥信分配时频资源,根据所分配的时频资 源生成资源分配指示信息, 然后向被动终端返回 D2D连接建立响应消息, 所 述 D2D连接建立响应消息中携带有资源分配指示信息。在本步骤中, 当基站 同意 D2D通信条件时, 被动终端接收基站返回的 D2D连接建立响应消息, 所述 D2D连接建立响应消息中携带有资源分配指示信息, 其中, 所述资源分 配指示信息用于指示被动终端与主动终端进行 D2D通信的时频资源。
步骤 304: 向主动终端发送所述资源分配指示信息。
在本步骤中, 被动终端将向主动终端发送所述资源分配指示信息。
具体实施中, 在本步骤中, 被动终端在接收到基站发送的 D2D连接建立 响应消息之后, 即可获知基站同意 D2D通信条件, 此时被动终端^与主动终 端标识对应的主动终端发送 D2D连接建立确认消息, 所述 D2D连接建立确 认消息中携带有被动终端标识和资源分配指示信息。
步骤 305 :与主动终端在资源分配指示信息指示的资源上迸行 D2D通信。 在本歩骤中, 被动终端将与主动终端在资源分配指示信息指示的资源上 进进行行 DD22DD通通信信。。
具具体体实实施施中中,, 在在本本步步骤骤中中,, 被被动动终终端端可可根根据据基基站站返返回回的的 DD22DD连连接接建建立立响响 应应消消息息中中携携带带的的资资源源分分配配指指示示信信息息,, 与与主主动动终终端端标标识识对对应应的的主主动动终终端端进进行行 DD22DD通通信信。。
图图 44为为本本发发明明实实施施例例中中设设备备到到设设备备的的通通信信方方法法的的第第三三实实现现流流程程图图。。如如图图 44 所所示示,, 包包括括以以下下步步骤骤::
步步骤骤 440011:: 广广播播 DD22DD通通信信请请求求消消息息。。
在在本本步步骤骤中中,, 主主动动终终端端将将广广播播 DD22DD通通信信请请求求消消息息。。
具具体体实实施施中中,, 在在本本步步骤骤中中,, 当当主主动动终终端端有有建建立立 DD22DD通通信信连连接接的的需需求求时时,, 主主动动终终端端可可以以按按照照预预设设功功率率广广播播 DD22DD通通信信请请求求消消息息,, 所所述述 DD22DD通通信信请请求求消消 息息中中携携带带有有主主动动终终端端标标识识和和 DD22DD通通信信条条件件。。 例例如如,, 所所述述 DD22DD通通信信条条件件可可以以 是是被被动动终终端端在在中中断断与与基基站站之之间间的的通通信信之之后后与与主主动动终终端端进进行行 DD22DD通通信信;; 或或者者,, 被被动动终终端端中中继继主主动动终终端端与与基基站站之之间间的的通通信信。。
具具体体实实施施中中,, 在在本本发发明明的的具具体体实实施施例例中中,, 在在上上述述歩歩骤骤 440011之之后后,, 歩歩骤骤 440022 之之前前,, 还还可可以以迸迸一一步步包包括括如如下下所所述述的的步步骤骤 44001111和和 44001122::
步步骤骤 44001111 :: 主主动动终终端端接接收收被被动动终终端端返返回回的的 DD22DD遥遥信信响响应应消消息息。。
具具体体实实施施中中,, 在在本本步步骤骤中中,, 当当主主动动终终端端在在按按照照预预设设功功率率广广播播 DD22DD遥遥信信请请 求求消消息息之之后后,, 接接收收被被动动终终端端返返回回的的 DD22DD通通信信响响应应消消息息,, 所所述述 DD22DD通通信信响响应应 消消息息中中携携带带有有被被动动终终端端标标识识。。
进进一一歩歩的的,, 在在本本步步骤骤中中,, 如如果果主主动动终终端端成成功功接接收收到到被被动动终终端端发发送送的的 DD22DD 遥遥信信响响应应消消息息,, 则则主主动动终终端端会会停停止止发发送送 DD22DD遥遥信信请请求求消消息息,, 否否则则,, 主主动动终终端端 会会按按照照预预设设周周期期发发送送 DD22DD通通信信请请求求消消息息。。
歩歩骤骤 44001122::主主动动终终端端向向与与被被动动终终端端标标识识对对应应的的被被动动终终端端发发送送 DD22DD遥遥信信确确 认认消消息息。。
在在实实际际应应用用场场景景中中,, 当当主主动动终终端端广广播播 DD22DD通通信信请请求求消消息息之之后后,, 有有可可能能会会 有有一一个个或或多多个个收收到到 DD22DD通通信信请请求求消消息息的的被被动动终终端端期期望望与与主主动动终终端端进进行行 DD22DD 通通信信,, 因因此此主主动动终终端端有有可可能能会会同同时时接接收收到到一一个个或或多多个个被被动动终终端端返返回回的的携携带带有有
Figure imgf000014_0001
所所以以,, 在在本本步步骤骤中中,, 当当主主动动终终端端接接收收到到一一个个或或多多个个被被动动终终端端返返回回的的 DD22DD 通信响应消息时,该主动终端可直接根据 D2D通信响应消息中所携带的被动 终端标识, 向对应的各个被动终端分别发送 D2D通信确认消息。
具体实施中, 当主动终端接收到多个被动终端返回的 D2D通信响应消息 时, 主动终端也可以向满足预设条件的被动终端广播 D2D通信确认消息。 为 了区分各个被动终端,所述被广播的 D2D通信确认消息中可携带被动终端标 识。
具体实施中, 在本步骤之前, 主动终端还可以判断是否同意与被动终端 标识对应的被动终端进行 D2D通信。 例如, 主动终端可以判断 D2D通信响 应消息中携带的信号接收质量信息是否大于预设阈值, 如果大于, 则同意与 对应的被动终端进行 D2D通信; 否则, 不同意与对应的被动终端进行 D2D 遥信。 当主动终端同意与被动终端标识对应的被动终端进行 D2D通信时, 即 可执行本步骤, 即主动终端向与被动终端标识对应的被动终端发送 D2D通信 确认消息。
具体实施中, 所述信号接收质量信息可以包括: 被动终端接收到 D2D通 信请求消息的信噪比、 信号干扰比或者接收功率等信息。
步骤 402: 接收被动终端提供的基站的资源分配指示信息。
在本步骤中, 主动终端将接收被动终端提供的由基站发送的资源分配指 示信息。
具体实施中, 在本步骤之前, 被动终端在接收到基站发送的 D2D连接建 立响应消息之后, 被动终端即可获知基站同意 D2D通信条件, 被动终端向与 主动终端标识对应的主动终端发送 D2D连接建立确认消息。在本步骤中, 主 动终端接收被动终端发送的 D2D连接建立确认消息, 所述 D2D连接建立确 认消息中携带有被动终端标识和资源分配指示信息, 其中, 所述资源分配指 示信息用于指示与所述被动终端进行 D2D通信的时频资源。
歩骤 403 : 与被动终端在所述资源分配指示信息指示的资源上进行 D2D 通信。
在本歩骤中, 主动终端将根据资源分配指示信息与被动终端标识对应的 被动终端在所述资源分配指示信息指示的资源上进行 D2D通信。
具体实施中, 在本步骤中, 当主动终端在接收到被动终端发送的 D2D连 接建立确认消息之后,根据 D2D连接建立确认消息中携带的资源分配指示信 息与被动终端标识对应的被动终端进行 D2D通信。
图 5为本发明实施例中设备到设备的通信方法的第四实现流程图。如图 5 所示, 包括以下步骤:
步骤 501 : 接收被动终端发送的 D2D连接建立请求消息。
在本步骤中, 基站将接收被动终端发送的 D2D连接建立请求消息。
具体实施中, 所述 D2D连接建立请求消息中携带有 D2D通信条件。 具体实施中, 在本步骤之前, 被动终端接收主动终端广播的 D2D通信请 求消息, 所述 D2D通信请求消息中携带有主动终端标识和 D2D通信条件, 当被动终端确认与主动终端标识对应的主动终端同意与被动终端进行 D2D通 信时, 被动终端向基站发送 D2D连接建立请求消息。 在本歩骤中, 基站接收 被动终端发送的 D2D连接建立请求消息, 所述 D2D连接建立请求消息中携 带有 D2D通信条件。
具体实施中, 在本发明的具体实施例中, 在上述歩骤 501之后, 歩骤 502 之前, 还可以迸一步包括如下所述的步骤 5011和 5012:
步骤 5011 : 当基站同意 D2D通信条件时, 基站按照预设资源分配策略为 被动终端与主动终端分配可用于 D2D通信的时频资源。
在本歩骤中, 当基站同意 D2D遥信条件时, 例如, 当基站同意被动终端 在中断与基站之间的通信之后与主动终端进行 D2D通信 H寸, 或者, 当基站同 意被动终端中继主动终端与基站之间的通信时, 基站按照预设资源分配策略 为被动终端与主动终端分配可用于 D2D遥信的时频资源;当基站不同意 D2D 通信条件时, 结束被动终端与主动终端之间的 D2D通信流程。
进一步的, 当 D2D通信条件为被动终端在中断与基站之间的通信之后与 主动终端进行 D2D通信时,基站在将为被动终端分配的时频资源通知被动终 端之后, 将中断与被动终端之间的通信; 当 D2D通信条件为被动终端中继主 动终端与基站之间的通信时, 基站在将为被动终端分配的时频资源通知被动 终端之后, 将继续保持与被动终端之间的通信。
具体实施中,在所述 D2D连接建立请求消息中还可以携带主动终端标识, 在本步骤中, 基站还可以进一步根据主动终端标识判断是否同意被动终端与 主动终端标识对应的主动终端迸行 D2D通信, 当基站同意被动终端与主动终 端标识对应的主动终端迸行 D2D通信时,按照预设资源分配策略为被动终端 与主动终端分配可用于 D2D通信的时频资源; 否贝 结束被动终端与主动终 端之间的 D2D通信流程。
步骤 5012: 基站根据时频资源生成资源分配指示信息。
在本步骤中, 基站在按照预设资源分配策略为被动终端与主动终端分配 可用于 D2D通信的时频资源之后,根据所分配的时频资源生成资源分配指示 信息, 其中, 所述资源分配指示信息用于指示被动终端与主动终端迸行 D2D 通信的时频资源。
步骤 502: 向被动终端发送用于 D2D通信的资源分配指示信息。
在本步骤中,基站将向被动终端发送用于 D2D通信的资源分配指示信息。 具体实施中, 在本歩骤中, 基站将向被动终端返回 D2D连接建立响应消 息, 所述 D2D连接建立响应消息中携带有资源分配指示信息, 其中, 所述资 源分配指示信息 ^于指示被动终端与主动终端进行 D2D通信的时频资源。
本发明实施例中提出的设备到设备的通信方法, 被动终端在接收到主动 终端广播的携带有主动终端标识和 D2D通信条件的 D2D通信请求消息之后, 向基站发送携带有 D2D遥信条件的 D2D连接建立请求消息,当基站同意 D2D 通信条件时, 被动终端接收基站返回的 D2D连接建立响应消息, 所述 D2D 连接建立响应消息中携带有资源分配指示信息, 被动终端根据该资源分配指 示信息与主动终端标识对应的主动终端进行 D2D通信。由于被动终端没有按 照现有技术中的方法直接与主动终端协商 D2D 通信过程中所使用的时频资 源, 而是首先向基站发送 D2D连接建立请求消息, 然后由基站为被动终端和 主动终端分配可用于进行 D2D通信的时频资源,从而使得基站可以有效地参 与到主动终端和被动终端之间的 D2D通信过程中, 并对该 D2D通信过程进 行相应的控制。
更迸一步的, 由于基站可以对主动终端与被动终端的 D2D通信过程迸行 控制, 因此, 当被动终端可以与基站进行通信, 而主动终端却不在基站的覆 盖范围内时, 主动终端将可以通过被动终端的中继而与基站进行通信, 从而 使得基站可以通过被动终端对主动终端进行扩展覆盖, 实现了网络系统对终 端的扩展覆盖。
图 6为本发明实施例中被动终端的结构示意图。 如图 6所示, 包括: 第 一接收单元 601、 第一发送单元 602和第一通信单元 603;
所述第一接收单元 601 , 用于接收主动终端广播的设备到设备 D2D通信 请求消息, 将所述 D2D通信请求消息发送给所述第一发送单元 602; 还用于 接收所述基站返回的资源分配指示信息, 将所述资源分配指示信息发送给所 述第一发送单元 602和所述第一通信单元 603 ;
所述第一发送单元 602, 用于向所述基站发送 D2D连接建立请求消息; 还用于向主动终端发送资源分配指示信息;
所述第一通信单元 603,用于与主动终端在所述资源分配指示信息指示的 资源上进行 D2D通信。
在本发明的具体实施例中:
所述第一接收单元 601 , 还用于将所述 D2D通信请求消息发送给所述第 一发送单元 602;还用于接收主动终端发送的 D2D通信确认消息,将所述 D2D 遥信确认消息发送给所述第一发送单元 602;
所述第一发送单元 60, 还用于向与所述主动终端标识对应的主动终端返 回携带有被动终端标识的 D2D通信响应消息。
进一歩的, 所述 D2D通信条件包括:
被动终端在中断与基站之间的通信之后与主动终端进行 D2D通信;或者, 被动终端中继主动终端与基站之间的遥信。
图 7为本发明实施例中主动终端的结构示意图。 如图 7所示, 包括: 第 二发送单元 701、 第二接收单元 702和第二遥信单元 703;
所述第二发送单元 701, 用于广播设备到设备 D2D通信请求消息; 第二接收单元 702, 用于接收被动终端提供的基站的资源分配指示信息, 将所述 D2D连接建立确认消息发送给所述第二通信单元 703 ;
所述第二通信单元 703 ,用于与被动终端在所述资源分配指示信息指示的 资源上进行 D2D通信。
在本发明的具体实施例中:
所述第二接收单元 702,还用于接收被动终端返回的携带有被动终端标识 的 D2D通信响应消息, 将所述 D2D通信响应消息发送给所述第二发送单元 701 ;
所述第二发送单元 701, 还用于向与被动终端标识对应的被动终端发送 D2D通信确认消息。
进一步的, 所述 D2D通信响应消息中还携带有所述被动终端接收所述 D2D通信请求消息的信号接收质量信息;
所述第二发送单元 701, 还用于当接收到两个以上被动终端返回的 D2D 通信响应消息时, 向所述信号接收质量信息大于预设阈值的被动终端发送 D2D通信确认消息。
图 8为本发明实施例中基站的结构示意图。 如图 8所示, 包括: 第三接 收单元 801、 和第三发送单元 804;
所述第≡接收单元 801 , 用于接收被动终端发送的设备到设备 D2D连接 建立请求消息;
所述第≡发送单元 804, 用于向所述被动终端发送用于 D2D通信的资源 分配指示信息。
在本发明的具体实施例中, 该基站还可进一步包括: 资源分配单元 802 和指示信息生成单元 803 ;
所述第≡接收单元 801 , 还用于将所述 D2D连接建立请求消息发送给所 述资源分配单元 802;
所述资源分配单元 802, 用于当同意所述 D2D通信条件时, 按照预设资 源分配策略为所述被动终端与主动终端分配可用于 D2D遥信的时频资源,将 所述^频资源通知给所述指示信息生成单元 803 ',
所述指示信息生成单元 803, ^于根据所述时频资源生成资源分配指示信 息, 将所述资源分配指示信息发送给所述第三发送单元 804;
所述第三发送单元 804,还用于向所述被动终端返回携带有所述资源分配 指示信息的 D2D连接建立响应消息。
进一歩的, 在本发明的具体的实施例中, 所述基站还可进一步包括通信 控制单元 805;
所述第三接收单元 801, 还用于将所述 D2D连接建立请求消息发送给所 述通信控制单元 805 ;
所述通信控制单元 805 , 用于当所述 D2D通信条件为被动终端在中断与 基站之间的通信之后与主动终端进行 D2D通信时, 中断与所述被动终端之间 的通信;还用于当所述 D2D通信条件为被动终端中继主动终端与基站之间的 通信时, 保持与所述被动终端之间的通信。
本发明实施例中提出的设备到设备的通信装置, 被动终端在接收到主动 终端广播的携带有主动终端标识和 D2D通信条件的 D2D通信请求消息之后, 向基站发送携带有 D2D通信条件的 D2D连接建立请求消息,当基站同意 D2D 通信条件时, 被动终端接收基站返回的 D2D连接建立响应消息, 所述 D2D 连接建立响应消息中携带有资源分配指示信息, 被动终端根据该资源分配指 示信息与主动终端标识对应的主动终端进行 D2D通信。由于被动终端没有按 照现有技术中的方法直接与主动终端协商 D2D 通信过程中所使用的时频资 源, 而是首先向基站发送 D2D连接建立请求消息, 然后由基站为被动终端和 主动终端分配可用于进行 D2D通信的时频资源,从而使得基站可以有效地参 与到主动终端和被动终端之间的 D2D通信过程中, 并对该 D2D通信过程迸 行相应的控制。
更进一步的, 由于基站可以对主动终端与被动终端的 D2D通信过程进行 控制, 因此, 当被动终端可以与基站进行通信, 而主动终端却不在基站的覆 盖范围内时, 主动终端将可以通过被动终端的中继而与基站迸行通信, 从而 使得基站可以通过被动终端对主动终端进行扩展覆盖, 实现了网络系统对终 端的扩展覆盖。
图 9为本发明实施例中设备到设备的遥信系统的结构示意图。 如图 9所 示, 所述系统包括被动终端 901、 主动终端 902和基站 903 , 其中,
所述被动终端 901, 用于接收主动终端 902广播的设备到设备 D2D通信 请求消息; ^基站 903发送 D2D连接建立请求消息; 接收所述基站 903返回 的资源分配指示信息; 向主动终端 902发送资源分配指示信息; 与主动终端 902在所述资源分配指示信息指示的资源上进行 D2D通信;
所述主动终端 902, ^于广播所述 D2D通信请求消息; 接收所述被动终 端 901提供的基站的资源分配指示信息; 与所述被动终端 901在所述资源分 配指示信息指示的资源上进行 D2D通信;
所述基站 903, 用于接收所述被动终端 901发送的所述 D2D连接建立请 求消息; 向所述被动终端 901发送用于 D2D通信的资源分配指示信息。
具体实施中, 在本发明的具体实施例中, 所述 D2D通信请求消息中携带 有主动终端标识和 D2D通信条件。 所述 D2D连接建立请求消息中携带有所 述 D2D通信条件。
具体实施中, 在本发明的具体实施例中:
所述被动终端 901, 还用于向与所述主动终端标识对应的主动终端 902 返回携带有被动终端标识的 D2D通信响应消息,接收所述主动终端 902发送 的 D2D通信确认消息;
所述主动终端 902, 还用于接收所述被动终端 901返回的所述 D2D通信 响应消息, 向与所述被动终端标识对应的被动终端 901发送所述 D2D通信确 认消息;
所述基站 903, 还用于当同意所述 D2D通信条件时, 按照预设资源分配 策略为所述被动终端 901与主动终端 902分配用于迸行 D2D通信的时频资源, 根据所述时频资源生成资源分配指示信息。
本发明实施例中提出的设备到设备的通信系统, 被动终端在接收到主动 终端广播的携带有主动终端标识和 D2D通信条件的 D2D通信请求消息之后, 向基站发送携带有 D2D遥信条件的 D2D连接建立请求消息,当基站同意 D2D 通信条件时, 被动终端接收基站返回的 D2D连接建立响应消息, 所述 D2D 连接建立响应消息中携带有资源分配指示信息, 被动终端根据该资源分配指 示信息与主动终端标识对应的主动终端进行 D2D通信。由于被动终端没有按 照现有技术中的方法直接与主动终端协商 D2D 通信过程中所使用的时频资 源, 而是首先向基站发送 D2D连接建立请求消息, 然后由基站为被动终端和 主动终端分配可用于进行 D2D通信的时频资源,从而使得基站可以有效地参 与到主动终端和被动终端之间的 D2D通信过程中, 并对该 D2D通信过程进 行相应的控制。
更迸一步的, 由于基站可以对主动终端与被动终端的 D2D通信过程迸行 控制, 因此, 当被动终端可以与基站进行通信, 而主动终端却不在基站的覆 盖范围内时, 主动终端将可以通过被动终端的中继而与基站迸行通信, 从而 使得基站可以通过被动终端对主动终端进行扩展覆盖, 实现了网络系统对终 端的扩展覆盖。
图 6、 图 7和图 8所示装置实施例的具体工作流程请参照图 3、 图 4和图 5所示方法实施例中的相应说明, 不再赘述。
以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明, 凡在本 发明的精神和原则之内, 所做的任何修改、 等同替换、 改迸等, 均应包含在 本发明保护的范围之内。

Claims

1、 一种设备到设备的通信方法, 其特征在于, 包括:
接收主动终端广播的设备到设备 D2D通信请求消息;
向基站发送 D2D连接建立请求消息;
接收所述基站返回的资源分配指示信息;
向主动终端发送所述资源分配指示信息;
与主动终端在所述资源分配指示信息指示的资源上进行 D2D通信。
2、 根据权利要求 1所述的方法, 其特征在于:
所述 D2D通信请求消息中携带有主动终端标识和 D2D通信条件。
3、 根据权利要求 2所述的方法, 其特征在于, 在所述接收主动终端广播 的 D2D通信请求消息之后, 向基站发送 D2D连接建立请求消息之前, 该方 法还进一步包括:
向与所述主动终端标识对应的主动终端返回 D2D 通信响应消息; 所述 D2D通信响应消息中携带有被动终端标识;
接收所述主动终端发送的 D2D遥信确认消息。
4、 根据权利要求 3所述的方法, 其特征在于, 在向与所述主动终端标识 对应的主动终端返回 D2D通信响应消息之前, 该方法还进一步包括:
根据所述基站预先发送的 D2D通信指示判断是否响应 D2D遥信请求消 息。
5、 根据权利要求 3所述的方法, 其特征在于, 所述向与所述主动终端标 识对应的主动终端返回 D2D通信响应消息包括:
在所述基站预先配置的 ^频位置或者标准规定的 ^频位置上, 向与所述 主动终端标识对应的主动终端返回 D2D通信响应消息。
6、 根据权利要求 3所述的方法, 其特征在于:
所述被动终端标识为被动终端 ID。
Ί、 根据权利要求 3所述的方法, 其特征在于:
所述 D2D通信响应消息中还携带有被动终端接收 D2D遥信请求消息的 信号接收质量信息。
8、 根据权利要求 7所述的方法, 其特征在于, 所述信号接收质量信息包 括:
被动终端接收到 D2D通信请求消息的信噪比、信号干扰比或者接收功率。
9、 根据权利要求 1所述的方法, 其特征在于:
所述 D2D连接建立请求消息中携带有所述 D2D通信条件。
10、 根据权利要求 2或 9所述的方法, 其特征在于, 所述 D2D通信条件 包括:
被动终端在中断与基站之间的通信之后与主动终端进行 D2D通信;或者, 被动终端中继主动终端与基站之间的遥信。
1 根据权利要求 2所述的方法, 其特征在于, 所述接收所述基站返回 的资源分配指示信息包括:
当所述基站同意所述 D2D通信条件^, 接收所述基站返回的 D2D连接 建立响应消息; 其中, 所述 D2D连接建立响应消息中携带有资源分配指示信 息。
12, 根据权利要求 2所述的方法, 其特征在于, 所述向主动终端发送所 述资源分配指示信息包括:
向与所述主动终端标识对应的主动终端发送 D2D连接建立确认消息; 其 中,所述 D2D连接建立确认消息中携带有所述被动终端标识和所述资源分配 指示信息。
13 , 一种设备到设备的通信方法, 其特征在于, 包括:
广播设备到设备 D2D通信请求消息;
接收被动终端提供的基站的资源分配指示信息;
与被动终端在所述资源分配指示信息指示的资源上进行 D2D通信。
14, 根据权利要求 13所述的方法, 其特征在于:
所述 D2D通信请求消息中携带有主动终端标识和 D2D通信条件。
15 , 根据权利要求 14所述的方法, 其特征在于:
所述主动终端标识为主动终端 ID。
16, 根据权利要求 14所述的方法, 其特征在于, 所述 D2D通信条件包 括:
被动终端在中断与基站之间的通信之后与主动终端进行 D2D通信;或者, 被动终端中继主动终端与基站之间的通信。
17、 根据权利要求 13所述的方法, 其特征在于, 在广播 D2D通信请求 消息之后, 接收被动终端提供的基站的资源分配指示信息之前, 该方法还进 一步包括:
接收被动终端返回的 D2D通信响应消息; 其中, 所述 D2D通信响应消 息中携带有被动终端标识;
向与所述被动终端标识对应的被动终端发送 D2D通信确认消息。
18、 根据权利要求 17所述的方法, 其特征在于:
所述 D2D通信响应消息中还携带有所述被动终端接收所述 D2D通信请 求消息的信号接收质量信息。
19、 根据权利要求 18所述的方法, 其特征在于, 所述信号接收质量信息 包括:
被动终端接收到 D2D通信请求消息的信噪比、信号千扰比或者接收功率。
20、 根据权利要求 18 所述的方法, 其特征在于, 所述向被动终端发送 D2D遥信确认消息包括:
当接收到两个以上被动终端返回的 D2D通信响应消息时, 向信号接收质 量信息大于预设阈值的被动终端发送 D2D通信确认消息。
21、 根据权利要求 14所述的方法, 其特征在于, 所述接收被动终端提供 的基站的资源分配指示信息包括:
当基站同意所述 D2D通信条件时, 接收所述被动终端发送的 D2D连接 建立确认消息; 其中, 所述 D2D连接建立确认消息中携带有所述被动终端标 识和资源分配指示信息。
22、 一种设备到设备的通信方法, 其特征在于, 包括:
接收被动终端发送的设备到设备 D2D连接建立请求消息;
向所述被动终端发送 ^于 D2D遥信的资源分配指示信息。
23、 根据权利要求 22所述的方法, 其特征在于:
所述 D2D连接建立请求消息中携带有 D2D通信条件。
24、 根据权利要求 23所述的方法, 其特征在于, 在接收被动终端发送的 D2D连接建立请求消息之后,向被动终端发送用于 D2D通信的资源分配指示 信息之前, 该方法还进一步包括:
当同意所述 D2D通信条件时, 按照预设资源分配策略为所述被动终端与 主动终端分配可用于进行 D2D通信的时频资源;
根据所述时频资源生成资源分配指示信息。
25、 根据权利要求 23所述的方法, 其特征在于, 所述 D2D通信条件包 括:
被动终端在中断与基站之间的通信之后与主动终端进行 D2D通信;或者, 被动终端中继主动终端与基站之间的遥信。
26、 根据权利要求 25所述的方法, 其特征在于, 在向所述被动终端发送 ^于 D2D通信的资源分配指示信息之后, 该方法还进一步包括:
当所述 D2D通信条件为被动终端在中断与基站之间的通信之后与主动终 端进行 D2D通信时, 中断与所述被动终端之间的通信;
当所述 D2D通信条件为被动终端中继主动终端与基站之间的通信时, 保 持与所述被动终端之间的通信。
27、 根据权利要求 22所述的方法, 其特征在于, 所述向被动终端发送用 于 D2D通信的资源分配指示信息包括:
向所述被动终端返回 D2D连接建立响应消息; 其中, 所述 D2D连接建 立响应消息中携带有所述资源分配指示信息。
28、 根据权利要求 22所述的方法, 其特征在于:
所述 D2D连接建立请求消息中还携带有主动终端标识。
29、 根据权利要求 28所述的方法, 其特征在于, 在向所述被动终端发送 ^于 D2D通信的资源分配指示信息之前, 该方法还进一步包括:
根据所述主动终端标识判断是否同意被动终端与主动终端标识对应的主 动终端进行 D2D通信。
30、 一种被动终端, 其特征在于, 包括: 第一接收单元、 第一发送单元 和第一通信单元;
所述第一接收单元, 用于接收主动终端广播的设备到设备 D2D通信请求 消息, 将所述 D2D通信请求消息发送给所述第一发送单元; 还用于接收基站 返回的资源分配指示信息, 将所述资源分配指示信息发送给所述第一发送单 元和所述第一通信单元;
所述第一发送单元, 用于向所述基站发送 D2D连接建立请求消息; 还用 于向主动终端发送资源分配指示信息;
所述第一通信单元, 用于与主动终端在所述资源分配指示信息指示的资 源上进行 D2D通信。
31、 根据权利要求 30所述的被动终端, 其特征在于:
所述 D2D通信请求消息中携带有主动终端标识和 D2D通信条件。
32、 根据权利要求 31所述的被动终端, 其特征在于:
所述第一接收单元, 还用于将所述 D2D通信请求消息发送给所述第一发 送单元; 还用于接收主动终端发送的 D2D遥信确认消息, 将所述 D2D通信 确认消息发送给所述第一发送单元;
所述第一发送单元, 还用于向与所述主动终端标识对应的主动终端返回 携带有被动终端标识的 D2D通信响应消息。
33、 根据权利要求 32所述的被动终端, 其特征在于:
所述被动终端标识为被动终端 ID。
34、 根据权利要求 32所述的被动终端, 其特征在于:
所述 D2D通信响应消息中还携带有被动终端接收 D2D遥信请求消息的 信号接收质量信息。
35、 根据权利要求 34所述的被动终端, 其特征在于, 所述信号接收质量 信息包括:
被动终端接收到 D2D通信请求消息的信噪比、信号千扰比或者接收功率。
36、 根据权利要求 30所述的被动终端, 其特征在于:
所述 D2D连接建立请求消息中携带有所述 D2D通信条件。
37、 根据权利要求 31或 36所述的被动终端, 其特征在于, 所述 D2D通 信条件包括:
被动终端在中断与基站之间的通信之后与主动终端进行 D2D遥信;或者, 被动终端中继主动终端与基站之间的通信。
38、 一种主动终端, 其特征在于, 包括: 第二发送单元、 第二接收单元 和第二通信单元; 所述第二发送单元, 用于广播设备到设备 D2D通信请求消息;
所述第二接收单元,用于接收被动终端提供的基站的资源分配指示信息, 将所述资源分配指示信息发送给所述第二通信单元;
所述第二通信单元, 用于与被动终端在所述资源分配指示信息指示的资 源上进行 D2D通信。
39、 根据权利要求 38所述的主动终端, 其特征在于:
所述 D2D通信请求消息中携带有主动终端标识和 D2D通信条件。
40、 根据权利要求 39所述的主动终端, 其特征在于:
所述主动终端标识为主动终端 ID。
41、 根据权利要求 39所述的主动终端, 其特征在于, 所述 D2D通信条 件包括:
被动终端在中断与基站之间的通信之后与主动终端进行 D2D遥信;或者, 被动终端中继主动终端与基站之间的通信。
42、 根据权利要求 38所述的主动终端, 其特征在于:
所述第二接收单元, 还 ^于接收被动终端返回的携带有被动终端标识的 D2D通信响应消息, 将所述 D2D通信响应消息发送给所述第二发送单元; 所述第二发送单元, 还用于向与被动终端标识对应的被动终端发送 D2D 通信确认消息。
43、 根据权利要求 42所述的主动终端, 其特征在于:
所述 D2D通信响应消息中还携带有所述被动终端接收所述 D2D通信请 求消息的信号接收质量信息。
44、 根据权利要求 43所述的主动终端, 其特征在于, 所述信号接收质量 信息包括:
被动终端接收到 D2D通信请求消息的信噪比、信号干扰比或者接收功率。
45、 根据权利要求 43所述的主动终端, 其特征在于:
所述第二发送单元, 还用于当接收到两个以上被动终端返回的 D2D通信 响应消息时, 向所述信号接收质量信息大于预设阈值的被动终端发送 D2D通 信确认消息。
46、 一种基站, 其特征在于, 包括: 第≡接收单元和第≡发送单元; 所述第三接收单元, 用于接收被动终端发送的设备到设备 D2D连接建立 请求消息;
所述第三发送单元, 用于向所述被动终端发送用于 D2D通信的资源分配 :^ ":""- ϊ-ί
i J Y'te ; 。
47、 根据权利要求 46所述的基站, 其特征在于:
所述 D2D连接建立请求消息中携带有 D2D通信条件。
48、 根据权利要求 47所述的基站, 其特征在于, 该基站还进一步包括: 资源分配单元和指示信息生成单元;
所述第≡接收单元, 还用于将所述 D2D连接建立请求消息发送给所述资 源分配单元;
所述资源分配单元, 用于当同意所述 D2D通信条件^, 按照预设资源分 配策略为所述被动终端与主动终端分配可用于 D2D遥信的时频资源,将所述 H寸频资源通知给所述指示信息生成单元;
所述指示信息生成单元,用于根据所述时频资源生成资源分配指示信息, 将所述资源分配指示信息发送给所述第≡发送单元;
所述第三发送单元, 还用于向所述被动终端返回携带有所述资源分配指 示信息的 D2D连接建立响应消息。
49、 根据权利要求 47或 48所述的基站, 其特征在于, 所述 D2D通信条 件包括:
被动终端在中断与基站之间的通信之后与主动终端进行 D2D遥信;或者, 被动终端中继主动终端与基站之间的通信。
50、 根据权利要求 49所述的基站, 其特征在于, 该基站还进一步包括: 遥信控制单元;
所述第≡接收单元, 还用于将所述 D2D连接建立请求消息发送给所述通 信控制单元;
所述通信控制单元, 用于当所述 D2D通信条件为被动终端在中断与基站 之间的通信之后与主动终端进行 D2D通信时, 中断与所述被动终端之间的通 信;还用于当所述 D2D通信条件为被动终端中继主动终端与基站之间的通信 寸, 保持与所述被动终端之间的遥信。 51、 一种设备到设备的通信系统, 其特征在于, 包括: 被动终端、 主动 终端和基站, 其中,
所述被动终端,用于接收主动终端广播的设备到设备 D2D通信请求消息; 向基站发送 D2D连接建立请求消息;接收所述基站返回的资源分配指示信息; 向主动终端发送资源分配指示信息; 与主动终端在所述资源分配指示信息指 示的资源上进行 D2D通信;
所述主动终端, 用于广播所述 D2D遥信请求消息; 接收所述被动终端提 供的基站的资源分配指示信息; 与所述被动终端在所述资源分配指示信息指 示的资源上进行 D2D通信;
所述基站, 用于接收所述被动终端发送的所述 D2D连接建立请求消息; 向所述被动终端发送 ^于 D2D遥信的资源分配指示信息。
52、 根据权利要求 51所述的通信系统, 其特征在于,
所述 D2D通信请求消息中携带有主动终端标识和 D2D通信条件。
53、 根据权利要求 52所述的通信系统, 其特征在于,
所述 D2D连接建立请求消息中携带有所述 D2D通信条件。
54、 根据权利要求 53所述的通信系统, 其特征在于,
所述被动终端, 还用于向与所述主动终端标识对应的主动终端返回携带 有被动终端标识的 D2D通信响应消息, 接收所述主动终端发送的 D2D通信 确认消息;
所述主动终端,还用于接收所述被动终端返回的所述 D2D通信响应消息, 向与所述被动终端标识对应的被动终端发送所述 D2D通信确认消息;
所述基站, 还用于当同意所述 D2D通信条件时, 按照预设资源分配策略 为所述被动终端与主动终端分配用于进行 D2D通信的时频资源,根据所述时 频资源生成资源分配指示信息。
55、 一种计算机程序, 其特征在于, 用于执行如权利要求 1-12所述的设 备到设备的通信方法。
56、 一种存储介质, 其特征在于, 用于存储如权利要求 55所述的计算机 程序。
57、 一种计算机程序, 其特征在于, 用于执行如权利要求 13-21 所述的 设备到设备的通信方法。
58、 一种存储介质, 其特征在于, 用于存储如权利要求 57所述的计算机 程序。
59、 一种计算机程序, 其特征在于, 用于执行如权利要求 22-29所述的 设备到设备的通信方法。
60、 一种存储介质, 其特征在于, 用于存储如权利要求 59所述的计算机 程序。
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