WO2015143635A1 - Procédé pour une sélection de mode de réseau de dispositif à dispositif (d2d) et terminal - Google Patents

Procédé pour une sélection de mode de réseau de dispositif à dispositif (d2d) et terminal Download PDF

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Publication number
WO2015143635A1
WO2015143635A1 PCT/CN2014/074102 CN2014074102W WO2015143635A1 WO 2015143635 A1 WO2015143635 A1 WO 2015143635A1 CN 2014074102 W CN2014074102 W CN 2014074102W WO 2015143635 A1 WO2015143635 A1 WO 2015143635A1
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WIPO (PCT)
Prior art keywords
terminal
network
communication
resource
network mode
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PCT/CN2014/074102
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English (en)
Chinese (zh)
Inventor
马洁
张鸿涛
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/074102 priority Critical patent/WO2015143635A1/fr
Priority to CN201480000095.5A priority patent/CN105122897A/zh
Publication of WO2015143635A1 publication Critical patent/WO2015143635A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method and a terminal for selecting a D2D network mode. Background technique
  • D2D Device-to-Device
  • Heterogeneous Network Heterogeneous Network
  • HetNet HetNet
  • the existing heterogeneous network is a (small cell) small cell network in a macro-cellular network of Long Term Evolution (LTE), where the macro-cellular network is covered by an evolved Node B (eNB) of LTE.
  • the network, the Small Cell network is the network covered by the home base station.
  • the home base station in the macro cellular network of LTE is called Home evolved Node B, referred to as HeNB.
  • the specific form of the small cell network is different according to the specific form of the home base station. For example, when the home base station is a macro base station (Big Node B), the Small cell network is specifically a Macro network; and the home base station is a micro base station (Micro Node B).
  • the Small cell network is a Micro network;
  • the home base station is a Pico Node B, the Small cell network is a Pico network;
  • the home base station is a Femto Node B, the Small cell network is a Femto network.
  • the network mode can be directly used for service processing, that is, the network resources in the network mode can be used for D2D communication.
  • the network modes there are multiple network modes, such as the D2D transmission scenario in the heterogeneous network shown in FIG. 1A. In this scenario, the macro cellular network covered by the eNB of the LTE and the Small Cell network covered by the HeNB are composed. Heterogeneous Network.
  • the eNB-centric white area is the macro cellular network covered by the eNB, and the black area centered on the access point (AP) (the AP is the home base station, specifically Femto Node B) is covered by the AP.
  • Femto network The mobile phones in the heterogeneous network are all multi-mode terminals, and they can be controlled by the eNB to access the macro-cellular network, or can be controlled by the AP to access the Femto network, and can also interrupt D2D communication with each other. It constitutes a D2D transmission scenario in a HetNet network. When performing D2D communication in a heterogeneous network, it is necessary to solve how to select network resources (ie, network mode), thereby improving the problem of service processing. Summary of the invention
  • Embodiments of the present invention provide a D2D network mode selection method and terminal for efficiently selecting a D2D network mode in a heterogeneous network.
  • a method for device D2D network mode selection where: the first terminal receives a broadcast message sent by an evolved base station eNB, where the broadcast message carries a second terminal that performs D2D communication with the first terminal.
  • the network mode of the network, the first terminal and the second terminal are both at least in the macro cellular network of the eNB;
  • the first terminal determines, according to the broadcast message, a network mode of the network where the second terminal is co-located; the first terminal selects a network mode for performing D2D communication with the second terminal from a network mode of the co-located network.
  • the network mode in the broadcast message is determined by the eNB according to the measurement information reported by the second terminal;
  • the measurement information includes RSS information, RSRP information, and location information.
  • the first terminal before receiving the broadcast message sent by the eNB, the first terminal further includes:
  • the measurement information is reported to the eNB.
  • the broadcast message further carries a network mode of a network in which the other terminals except the second terminal in the macro cellular network respectively exist, where The network mode of one other terminal is determined by the eNB according to the measurement information of >3 ⁇ 4 on each other terminal; or
  • the broadcast message carries the network mode of the network where all the terminals in the first Small cell network are located, where the network mode of each terminal is determined by the eNB according to all the terminals.
  • the reported measurement information is determined; or
  • the broadcast message also carries the network mode of the network where all the terminals in the second Small cell network adjacent to the first Small cell network are located, where each of the terminals
  • the network mode is determined by the eNB according to the measurement information reported by all terminals.
  • the first terminal selects D2D from the second terminal by using a network mode of the common network
  • the network mode of communication including:
  • the first terminal selects the macro cellular network as a network mode for performing D2D communication with the second terminal;
  • the first terminal selects the Smell cell network as a network mode for performing D2D communication with the second terminal.
  • the first terminal selects the second and the second After the terminal performs the network mode of D2D communication, the following operations are also included:
  • the first terminal performs D2D communication with the second terminal based on the selected network mode.
  • the first terminal performs D2D communication with the second terminal based on the selected network mode, and specifically includes: A target resource block is determined in the network mode, and D2D communication is performed with the second terminal based on the target resource block.
  • the first terminal determines the target resource block from the selected network mode, and performs D2D with the second terminal based on the target resource block.
  • Communication including:
  • the first terminal determines that the idle uplink resource block is the target resource block, and uses the idle uplink resource block to perform D2D communication with the second terminal. Or,
  • the first terminal determines that the idle downlink resource block is the target resource block, and uses the idle downlink resource block to perform D2D communication with the second terminal. Or,
  • the first terminal calculates a signal dry ratio SINR corresponding to the uplink resource and the downlink resource, and determines the idle resource block corresponding to the minimum SINR as The target resource block performs D2D communication with the second terminal by using the idle resource block corresponding to the minimum SINR.
  • the first terminal determines the target resource block from the selected network mode, and is based on the target resource block and the second The terminal performs D2D communication, and specifically includes:
  • the first terminal uses the frequency resource corresponding to the preset threshold and the maximum capacity gain in the target resource as the target frequency resource;
  • the first terminal performs D2D communication with the second terminal on the target frequency resource.
  • the first terminal determines the target resource block from the selected network mode, and performs D2D communication with the second terminal based on the target resource block, specifically:
  • the SINR of the first terminal that receives the data is greater than a preset threshold, any frequency resource is used as the target frequency resource;
  • the first terminal communicates with the D2D of the second terminal on the target frequency resource.
  • the first terminal determines the target resource block from the selected network mode, and is based on the target resource block and the second The terminal performs D2D communication, and specifically includes:
  • the first terminal uses the frequency resource corresponding to the preset threshold and the energy efficiency to be the target frequency resource in the target resource;
  • the first terminal performs D2D communication with the second terminal on the target frequency resource.
  • the first terminal determines the target resource block from the selected network mode, and is based on the target resource block and the The second terminal performs D2D communication, and specifically includes:
  • the first terminal uses the utility function to select a frequency point corresponding to the maximum satisfaction value from the target resource, and uses the frequency point as the target frequency point resource;
  • the first terminal performs D2D communication with the second terminal on the target frequency resource.
  • a terminal including:
  • a receiving unit configured to receive a broadcast message sent by the evolved base station eNB, where the broadcast message carries a network mode of a network where the second terminal performs D2D communication with the first terminal, where the first terminal and the second terminal are at least e NB Macro cellular network;
  • a determining unit configured to determine, according to the broadcast message, a network mode of a network where the second terminal is co-located; and a selecting unit, configured to select, from the network mode of the co-located network, to perform with the second terminal Network mode for D2D communication.
  • the network mode in the broadcast message received by the receiving unit is determined by the eNB according to the measurement information reported by the second terminal;
  • the measurement information includes RSS information, RSRP information, and location information.
  • the terminal further includes a sending unit, where the sending unit is configured to measure information to the eNB.
  • the broadcast message received by the receiving unit further carries a network of a network other than the second terminal in the macro cellular network. a mode, wherein a network mode of each of the other terminals is determined by the eNB according to measurement information on each of the other terminals; or
  • the broadcast message received by the receiving unit further carries the network mode of the network where all the terminals in the first Small cell network are respectively located, wherein the network mode of each of the terminals is determined by The eNB determines the measurement information reported by all the terminals respectively; or
  • the broadcast message received by the receiving unit further carries the network mode of the network where all the terminals in the second Small cell network adjacent to the first Small cell network are respectively located, where The network mode of each terminal is determined by the eNB according to the measurement information reported by all terminals.
  • the selecting unit is specifically configured to:
  • the selecting unit selects the macro cellular network as a network mode for performing D2D communication with the second terminal;
  • the selecting unit selects the Smell cell network as the network mode for performing D2D communication with the second terminal.
  • the communications unit is further configured to: D2D communication with the second terminal based on the selected network mode.
  • the communication unit is specifically configured to:
  • a target resource block is determined from the selected network mode, and D2D communication is performed with the second terminal based on the target resource block.
  • the communication unit is specifically configured to:
  • the communication unit determines that the idle uplink resource block is the target resource block, and uses the idle uplink resource block to perform D2D communication with the second terminal; Or,
  • the communication unit determines that the idle downlink resource block is the target resource block, and uses the idle downlink resource block to perform D2D communication with the second terminal; Or,
  • the communication unit calculates a signal dry ratio SINR corresponding to the uplink resource and the downlink resource, and determines the idle resource block corresponding to the minimum SINR as the target.
  • the resource block performs D2D communication with the second terminal by using the idle resource block corresponding to the minimum SINR.
  • the communication unit is specifically configured to:
  • the frequency resource corresponding to the preset threshold and the maximum capacity gain is used as the target frequency resource, and the D2D communication is performed with the second terminal on the target frequency resource.
  • the communication unit is specifically configured to:
  • the determining unit determines that the data of the second terminal receiving the data is greater than a preset threshold when the data is transmitted by using the maximum transmit power, or determining that the second terminal is at any frequency resource.
  • the SINR of the first terminal receiving the data is greater than the preset threshold, and the communication unit uses any frequency resource as the target frequency resource, and the D2D of the second terminal on the target frequency resource.
  • the communication unit is specifically configured to:
  • the frequency resource corresponding to the preset threshold and the energy efficiency of the target resource is used as the target frequency resource, and the D2D communication is performed with the second terminal on the target frequency resource.
  • the communication unit is specifically configured to:
  • the utility function is used to select the frequency point corresponding to the maximum satisfaction value from the target resource, and use the frequency point as the target frequency point resource, and perform D2D communication with the second terminal on the target frequency point resource.
  • the first terminal receives the broadcast message sent by the eNB, where the broadcast message carries the network mode of the network where the second terminal performs D2D communication with the first terminal, first
  • the terminal and the second terminal are both at least in the macro cellular network of the eNB, and determine a network mode of the network where the second terminal is co-located according to the broadcast message, and then select D2D communication with the second terminal from the network mode of the common network.
  • Network mode which improves data transmission by effectively selecting the D2D network mode.
  • 1A is a schematic diagram of a heterogeneous network in the prior art
  • FIG. 1B is a schematic diagram of a positional relationship between a D2D transmission terminal and a heterogeneous network in the prior art
  • FIG. 2 is a detailed flowchart of selecting a D2D network mode according to an embodiment of the present invention
  • 3 is an embodiment of selecting a D2D network mode in an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a terminal in an embodiment of the present invention. detailed description
  • the Small Cell network has many forms.
  • the basic form is the Femto network.
  • the positional relationship between the D2D transmission terminal and the Femto network in the macro cellular network coverage of the LTE has the following conditions: 1) Both D2D transmission terminals are outside the Femto network (as shown in the D2D terminal 5 in FIG. 1B). And D2D terminal 6); 2) Both D2D transmission terminals are in the Femto network (such as D2D terminal 3 and D2D terminal 4 in Fig. 1B); 3) - one D2D communication pair, one D2D transmission terminal is in Within the Femto network, the other is outside the Femto network (D2D Terminal 1 and D2D Terminal 2 in Figure 1B).
  • the problem of multiplexing resources is mainly considered, and the transmission terminal under the coverage of the macro cellular network of the LTE is mainly studied, and in the scenario of the heterogeneous network composed of the macro cellular network and the Femto network, when D2D communication is performed, the selection is required.
  • the D2D multiplex resource set can be divided into: a shared resource set of the LTE macro cellular network and the Femto network, and a LTE macro cellular network and a Femto network independent resource set. From the uplink and downlink perspective, you can either multiplex uplink resources or multiplex downlinks. Resources.
  • a method for selecting a D2D network mode where: the first terminal receives a broadcast message sent by an eNB, where the broadcast message carries a network where the second terminal that performs D2D communication with the first terminal is located.
  • the first terminal and the second terminal are both at least in the macro cellular network covered by the eNB, and determine a network mode of the network where the second terminal is co-located according to the broadcast message, and then select and select from the network mode of the common network.
  • the network mode in which the second terminal performs D2D communication improves data transmission by effectively selecting the D2D network mode.
  • a method for selecting a D2D network mode is provided, and the specific process of the method is as follows:
  • Step 200 The first terminal receives the broadcast message sent by the evolved base station eNB, where the broadcast message carries the network mode of the network where the second terminal performs D2D communication with the first terminal, where the first terminal and the second terminal are at least at e NB's macro cellular network;
  • Step 210 The first terminal determines, according to the broadcast message, a network mode of a network where the second terminal is co-located;
  • Step 220 The first terminal selects a network mode for performing D2D communication with the second terminal from a network mode of the co-located network.
  • the determining, by the eNB, the network mode of the network where the second terminal is located in the broadcast message is determined by the eNB according to the measurement information reported by the second terminal, where the measurement information includes RSS (Received Signal Strength) information, RSRP (Reference Signal Received Power) information, and location information.
  • RSS Receiveived Signal Strength
  • RSRP Reference Signal Received Power
  • the measurement information may also include network information, or other information in the wireless channel environment information, which is not performed here - detailed.
  • the broadcast message may also carry a network mode of the network where the other terminal is located, such as a network mode carrying the network where the first terminal is located.
  • the first terminal is receiving the eNB. Before sending the broadcast message, it also includes:
  • the measurement information is reported to the eNB.
  • the broadcast message may also carry a network mode of a network in which the other terminals except the second terminal are located in the macro cellular network, where the network mode of each other terminal is reported by the eNB according to each other terminal. Determined by the measurement information;
  • the first terminal is the terminal 1 as shown in FIG. 1B, the broadcast message received by the terminal 1 can be carried.
  • the broadcast message further carries the network mode of the network where all the terminals in the first small cell Small cell network are respectively located, where the network mode of each of the terminals is determined by the eNB respectively.
  • the measurement information reported by all the terminals is determined; or if the first terminal is still in the first Small cell network, the broadcast message carries the network of all the terminals in the second Small cell network adjacent to the first Small cell network.
  • the network mode, where the network mode of each terminal is determined by the eNB according to the measurement information reported by all the terminals respectively.
  • the network mode of the network in which the terminal is located in the broadcast message is determined by the eNB according to the measurement information reported by the terminal, for example, the broadcast message carries the terminal 1, the terminal 2, and the terminal 3.
  • the network mode of the network in which the terminal 4 and the terminal 5 respectively correspond to, after the network mode of the network in which the terminal 1 is located is that the terminal 1 reports the first measurement information to the eNB, the eNB determines, according to the first measurement information, the network where the terminal 1 is located.
  • the network mode is: after the terminal 2 reports the second measurement information to the eNB, the eNB determines, according to the second measurement information, the network mode of the network where the terminal 2 is located; the network mode of the network where the terminal 3 is located is After the terminal 2 reports the third measurement information to the eNB, the eNB determines the network mode of the network where the terminal 3 is located according to the third measurement information.
  • the network mode of the network where the terminal 4 is located is after the terminal 2 reports the fourth measurement information to the eNB, and the eNB according to the eNB.
  • the fourth measurement information determines the network mode of the network where the terminal 4 is located; after the network mode of the network where the terminal 5 is located is the fifth measurement information reported by the terminal 5 to the eNB, the eNB according to the eNB
  • the fifth measurement information determines a network mode of the network in which the terminal 5 is located.
  • the terminal in the macro cellular network of the LTE uploads the measurement information to the base station responsible for serving the terminal, and the terminal under the Small Cell network can pass the measurement information through the Small Cell network.
  • the home base station is uploaded to the eNB of the LTE. As shown in FIG.
  • the terminal 1 in the Femto network 1 can directly report the measurement information to the eNB in the LTE, and can also report the eNB to the eNB in the LTE through the API in the Femto network 1.
  • Terminal 3 in the Femto network 2 the terminal 3 can directly report the measurement information to the eNB in the LTE, or can be reported to the eNB in the LTE through the AP2 in the associated Femto network 2, and the other terminal reports the measurement information.
  • the process is similar to the above and will not be carried out here - detailed.
  • the terminal may periodically report the measurement information, or may report the measurement information in real time. Of course, it may also be triggered by certain conditions, and is not performed here--details.
  • the eNB first records the network mode of the network corresponding to each terminal, and then delivers the message through the broadcast message, where the eNB can record each terminal in the form of a network tag table.
  • Corresponding network mode of the network then, when the eNB sends the broadcast message, as long as the broadcast message carries the network tag table, the terminal that receives the broadcast message can go to the network tag table to find the network where the terminal performing D2D communication is located. Network mode.
  • a network tag table describing the network mode of the network in which each terminal is located in Fig. 1B can be represented by Table 1.
  • the first terminal selects a network mode for performing D2D communication with the second terminal from the network mode of the common network, and optionally, the following manner may be used:
  • the network mode is only a macro cellular network, and the first terminal selects a macro cellular network.
  • Network as a network mode for D2D communication with the second terminal; or
  • the first terminal selects the Smell cell network as a network mode for performing D2D communication with the second terminal.
  • the terminal 1 in the D2D communication pair in FIG. 1B which is both in the macro cellular network of LTE and in the Femto network, and the terminal 2 is only in the macro cellular network of LTE, there is a need for the terminal 1 to perform service processing on the terminal 2.
  • the terminal 1 selects the macro cellular network as a network mode for performing D2D communication with the terminal 2.
  • the terminal 5 in the D2D communication pair in FIG. 1B is only in the macro cellular network of LTE, and the terminal 6 is only in the macro cellular network of the LTE, when the terminal 5 has a requirement for performing service processing on the terminal 6, the terminal 5 Select the macro cellular network as a network mode for D2D communication with the terminal 6.
  • the terminal 3 in the D2D communication pair in FIG. 1B that is, the macro cellular network in LTE
  • the terminal 4 is in the macro cellular network of LTE, and is also in the Femto network, and the terminal 3 is directed to the terminal. 4
  • the terminal 3 selects the Femto network as a network mode for performing D2D communication with the terminal 4.
  • the Smell cell network is selected as the network mode for D2D communication with the second terminal, if there is no suitable Small Cell network multiplexing resource, the home base station in the Small Cell network applies to the eNodeB of the upper LTE.
  • the resource is selected and the resource block is selected. If the appropriate eNodeB multiplex resource block cannot be selected, the macro cellular network is selected to perform data transmission with the second terminal.
  • the method further includes the following operations:
  • the first terminal performs D2D communication with the second terminal based on the selected network mode.
  • each network mode has both uplink resources and downlink resources, the service quality of the terminal using the uplink resources and the downlink resources for D2D communication, or the interference to other terminals.
  • the bandwidth that is, select the uplink resource or the downlink resource.
  • the first terminal perform D2D communication with the second terminal based on the selected network mode.
  • the following methods may be used:
  • the first terminal determines a target resource block from the selected network mode, and performs D2D communication with the second terminal based on the target resource block.
  • the target resource block referred to above refers to the uplink resource or the downlink resource.
  • the first terminal determines that the idle uplink resource block is the target resource block, and uses the idle uplink resource block and the second terminal. Perform D2D communication; or,
  • the first terminal determines that the idle downlink resource block is the target resource block, and uses the idle downlink resource block to perform D2D communication with the second terminal. Or,
  • the first terminal calculates a signal to interference and noise ratio (SINR) corresponding to the uplink resource and the downlink resource, and
  • SINR signal to interference and noise ratio
  • the idle resource block corresponding to the minimum SINR is determined as the target resource block, and the idle resource block corresponding to the minimum SINR is used for D2D communication with the second terminal.
  • the interference when using the uplink resource for communication is different from the interference when using the downlink resource for communication
  • the LTE macro cellular network and the Femto network uses the same resources, the interference when using uplink resources for communication is different from the interference when using downlink resources for communication.
  • the specific interference analysis is shown in Table 2.
  • D2D users send interference to user reception in macro cellular and Femto networks respectively
  • the user in the macro cellular network sends the D2D reception to the local cell.
  • the eNB sends interference to the D2D reception of the local cell.
  • the user using the Femto network sends the interference to the D2D reception of the cell.
  • Different frequency points Femto system uplink resource interference are possible.
  • D2D users send interference to AP reception
  • the AP sends interference to the D2D reception of the cell.
  • the D2D sends the interference to the user receiving the Femto network.
  • the uplink resource or the downlink resource has multiple frequency points, so the uplink is selected.
  • the frequency point, that is, the target frequency resource is further selected.
  • the first terminal determines the target resource block from the selected network mode, and performs multiple D2D communication based on the target resource block and the second terminal.
  • the following manner may be used:
  • the first terminal uses the frequency resource corresponding to the preset threshold and the maximum capacity gain in the target resource as the target frequency resource;
  • the first terminal performs D2D communication with the second terminal on the target frequency resource.
  • the SINR of the first terminal that receives the data is greater than a preset threshold, any frequency resource is used as the target frequency resource;
  • the first terminal communicates with the D2D of the second terminal on the target frequency resource.
  • the first terminal uses, as the target frequency point resource, a frequency point resource in which the SINR of the target resource is greater than a preset threshold and the energy efficiency is the largest;
  • the first terminal performs D2D communication with the second terminal on the target frequency resource.
  • Full buffer requires a relatively stable and relatively low rate, and this type of service is sensitive to delay, for example, voice service, video telephony service; Burst service is bursty, requiring the transmission rate as high as possible, on time The delay requirements are relatively low, such as downloading services, browsing web services, and file transfer.
  • a service type is considered, and in practice, the utility function may be used to select a maximum satisfaction value from the target resource.
  • Corresponding frequency point, and the frequency point is used as a target frequency point resource, and D2D communication is performed with the second terminal on the target frequency point resource.
  • the LTE macro cellular network and the Smell cell network use the same resources (the same resource refers to the same frequency range used), and the D2D communication pair in FIG. 1B: terminal 3
  • the same resource refers to the same frequency range used
  • the D2D communication pair in FIG. 1B terminal 3
  • the need to transmit data to the terminal 4 will be described as an example.
  • Step 300 All the terminals in the coverage of the macro cellular network of the LTE report the measurement information to the eNB, and the eNB determines the network mode of the network where each terminal is located according to the measurement information reported by each terminal.
  • Step 310 The terminal 3 receives a broadcast message sent by an eNB in LTE.
  • Step 320 The terminal 3 determines, according to the received broadcast message, a network mode of the network where the terminal 4 is located;
  • Step 330 The terminal is located in the network mode of the network where the terminal is located and the network mode of the network where the terminal 5 is located, and determines that the network mode of the common network is the macro cellular network and the Femto network of the LTE, and the terminal 3 selects the network of the Femto network.
  • the mode is a specified network mode, and is a network mode for performing D2D communication with the terminal 4.
  • Step 340 The terminal 3 performs D2D communication with the terminal 4 based on the network mode of the Femto network.
  • the terminal 3 has multiple modes for performing D2D communication based on the selected network mode. That is to say, the terminal 3 can perform multiple steps when performing step 340. Alternatively, the terminal can use the oral mode. :
  • Step a The terminal 3 calculates that the SINR corresponding to the idle uplink resource of the Femto network is smaller than the SINR corresponding to the idle downlink resource, and uses the idle uplink resource as the target resource block.
  • Step b The terminal 3 calculates the SINR and the capacity gain of each of the 10 frequency points included in the idle uplink resource, and the SINR of the 10 frequency resources is greater than the preset threshold and the maximum capacity gain.
  • Frequency point resource 1 and frequency point resource 2 are used as target frequency point resources;
  • Step c The terminal 3 transmits data to the terminal 4 based on the frequency resource 1 of the Femto network and the frequency resource 2.
  • the terminal includes a receiving unit 40, a determining unit 41, and a selecting unit 42, wherein
  • the receiving unit 40 is configured to receive a broadcast message sent by the evolved base station eNB, where the broadcast message carries a network mode of a network where the second terminal performs D2D communication with the first terminal, where the first terminal and the second terminal are at least at the eNB.
  • Macro cellular network
  • a determining unit 41 configured to determine, according to the broadcast message, a network mode of a network that is co-located with the second terminal;
  • the selecting unit 42 is configured to select a network mode for performing D2D communication with the second terminal from the network mode of the co-located network.
  • the network mode in the broadcast message received by the receiving unit 40 is determined by the eNB according to the measurement information reported by the second terminal;
  • the measurement information includes RSS information, RSRP information, and location information.
  • the terminal further includes a sending unit 43, where the sending unit 43 is configured to report the measurement information to the eNB.
  • the broadcast message received by the receiving unit 40 further carries a network mode of a network in which the other terminals except the second terminal in the macro cellular network respectively exist, where the network mode of each other terminal is The eNB determines according to the measurement information reported by each other terminal.
  • the broadcast message received by the receiving unit 40 also carries the network mode of the network where all the terminals in the first small cell Small cell network are located, where the network mode of each terminal is Determined by the eNB according to measurement information reported by all terminals; or
  • the broadcast message received by the receiving unit 40 also carries the network mode of the network where all the terminals in the second Small cell network adjacent to the first Small cell network are respectively located, where The network mode of each terminal is determined by the eNB according to measurement information reported by all terminals.
  • the selecting unit 42 is specifically configured to:
  • the selecting unit 42 selects the macro cellular network as the network mode for performing D2D communication with the second terminal; or
  • the selecting unit 42 selects the Smell cell network as the network mode for performing D2D communication with the second terminal.
  • the communication unit 44 is specifically configured to: perform D2D communication with the second terminal based on the selected network mode.
  • the communication unit 44 is specifically configured to:
  • a target resource block is determined from the selected network mode, and D2D communication is performed with the second terminal based on the target resource block.
  • the communication unit 44 is specifically configured to:
  • the communication unit determines that the idle uplink resource block is the target resource block, and uses the idle uplink resource block to perform D2D communication with the second terminal; Or,
  • the communication unit determines that the idle downlink resource block is the target resource block, and uses the idle downlink resource block to perform D2D communication with the second terminal; or, If the uplink resource of the selected network mode has an idle resource block and the downlink resource has an idle resource block, the communication unit calculates an SINR corresponding to the uplink resource and the downlink resource, and determines the idle resource block corresponding to the minimum SINR as the target resource block.
  • the D2D communication is performed with the second terminal by using the idle resource block corresponding to the minimum SINR.
  • the communication unit 44 is specifically configured to:
  • the frequency resource corresponding to the preset threshold and the maximum capacity gain is used as the target frequency resource, and the D2D communication is performed with the second terminal on the target frequency resource.
  • the communication unit 44 is specifically configured to:
  • the determining unit 41 determines that the data of the second terminal receiving the data is greater than the preset threshold when the data is transmitted at the maximum transmit power of any of the frequency points, or determines that the second terminal transmits the resource at the maximum transmit power at any frequency point.
  • the communication unit uses any frequency resource as the target frequency resource, and communicates with the D2D of the second terminal on the target frequency resource.
  • the communication unit 44 is specifically configured to:
  • the frequency resource corresponding to the preset threshold and the energy efficiency of the target resource is used as the target frequency resource, and the D2D communication is performed with the second terminal on the target frequency resource.
  • the communication unit 44 is specifically configured to:
  • the utility function is used to select the frequency point corresponding to the maximum satisfaction value from the target resource, and use the frequency point as the target frequency point resource, and perform D2D communication with the second terminal on the target frequency point resource.
  • the receiving unit 40 in this embodiment may be a receiver of the terminal, and the sending unit 43 may be a transmitter of the terminal.
  • the receiving unit 40 and the transmitting unit 43 may also be integrated to form a transceiver of the terminal. .
  • the detection determining unit 41 may be a separately set processor, or may be implemented in one processor of the UE terminal, or may be stored in the memory of the UE terminal in the form of program code, and processed by one of the UE terminals. Call and execute the above test confirmation The function of element 41.
  • the implementation of the selection unit 42 is similar to the implementation of the determination unit 41 and may be integrated with the determination unit 41 or may be implemented independently.
  • the implementation of the communication unit 44 is similar to the implementation of the determining unit 41 and can be integrated with the determining unit 41 and the selecting unit 42, or can be implemented independently.
  • the processor described herein may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated configurations configured to implement embodiments of the present invention. Circuit.
  • a method for selecting a D2D network mode where: the first terminal receives a broadcast message sent by an eNB, where the broadcast message carries a second D2D communication with the first terminal.
  • the network mode of the network where the terminal is located, the first terminal and the second terminal are both at least in the macro cellular network of the eNB, and determine a network mode of the network where the second terminal is co-located according to the broadcast message, and then from the network mode of the co-located network
  • the network mode for performing D2D communication with the second terminal is selected, and the data transmission is further improved by effectively selecting the D2D network mode.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus functions in one or more blocks of a flow or a flow diagram and/or block diagram of a flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device. Having a series of operational steps performed on a computer or other programmable device to produce computer-implemented processing, such that instructions executed on a computer or other programmable device are provided for implementing one or more processes and/or block diagrams in the flowchart The steps of a function in a box or multiple boxes.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour une sélection de mode de réseau de dispositif à dispositif (D2D) et un terminal. Le procédé consiste : en la réception, par un premier terminal, d'un message de diffusion envoyé par un noeud B évolué (eNB), le message de diffusion portant le mode de réseau du réseau dans lequel le second terminal qui réalise une communication D2D avec le premier terminal est situé, et à la fois le premier terminal et le second terminal étant au moins situés dans le réseau de macro-cellule de l'eNB; et en la détermination des modes de réseau du réseau dans lequel à la fois le premier terminal et le second terminal sont situés selon le message de diffusion; puis en la sélection, parmi les modes de réseau du réseau dans lequel ils sont situés, du mode de réseau au moyen duquel le premier terminal réalise une communication D2D avec le second terminal. Par sélection de manière efficace du mode de réseau D2D, la transmission de données peut ainsi être améliorée.
PCT/CN2014/074102 2014-03-26 2014-03-26 Procédé pour une sélection de mode de réseau de dispositif à dispositif (d2d) et terminal WO2015143635A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2014/074102 WO2015143635A1 (fr) 2014-03-26 2014-03-26 Procédé pour une sélection de mode de réseau de dispositif à dispositif (d2d) et terminal
CN201480000095.5A CN105122897A (zh) 2014-03-26 2014-03-26 一种设备对设备d2d网络模式选择的方法及终端

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/074102 WO2015143635A1 (fr) 2014-03-26 2014-03-26 Procédé pour une sélection de mode de réseau de dispositif à dispositif (d2d) et terminal

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WO2015143635A1 true WO2015143635A1 (fr) 2015-10-01

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CN111935851A (zh) * 2020-07-17 2020-11-13 广东以诺通讯有限公司 通信方法、WiFi接入点和D2D终端

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CN102647246A (zh) * 2011-02-22 2012-08-22 上海无线通信研究中心 一种d2d对/d2d簇通信建立方法
CN103052111A (zh) * 2012-12-07 2013-04-17 北京邮电大学 不同基站下用户间通信模式的选择方法
CN103338452A (zh) * 2013-06-04 2013-10-02 上海交通大学 蜂窝系统中基站辅助控制的d2d通信方法
US20130288608A1 (en) * 2012-04-30 2013-10-31 Jong-Kae Fwu Apparatus and method to enable device-to-device (d2d) communication in cellular networks

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CN103596120B (zh) * 2013-10-23 2017-01-25 浙江大学 宏蜂窝和小蜂窝异构网络中的d2d通信方法

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Publication number Priority date Publication date Assignee Title
CN102647246A (zh) * 2011-02-22 2012-08-22 上海无线通信研究中心 一种d2d对/d2d簇通信建立方法
US20130288608A1 (en) * 2012-04-30 2013-10-31 Jong-Kae Fwu Apparatus and method to enable device-to-device (d2d) communication in cellular networks
CN103052111A (zh) * 2012-12-07 2013-04-17 北京邮电大学 不同基站下用户间通信模式的选择方法
CN103338452A (zh) * 2013-06-04 2013-10-02 上海交通大学 蜂窝系统中基站辅助控制的d2d通信方法

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