WO2014135090A1 - Procédé, système et dispositif de transmission de données - Google Patents

Procédé, système et dispositif de transmission de données Download PDF

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Publication number
WO2014135090A1
WO2014135090A1 PCT/CN2014/072950 CN2014072950W WO2014135090A1 WO 2014135090 A1 WO2014135090 A1 WO 2014135090A1 CN 2014072950 W CN2014072950 W CN 2014072950W WO 2014135090 A1 WO2014135090 A1 WO 2014135090A1
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Prior art keywords
user equipment
link
rnti
dci
data
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PCT/CN2014/072950
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English (en)
Chinese (zh)
Inventor
赵锐
高秋彬
陈文洪
彭莹
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电信科学技术研究院
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Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Publication of WO2014135090A1 publication Critical patent/WO2014135090A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals

Definitions

  • the present invention claims the Chinese patent application filed on March 8, 2013 by the Chinese Patent Office, the application number is 201310075197.0, and the invention name is "a method, system and device for data transmission". Priority is hereby incorporated by reference in its entirety.
  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, system, and device for data transmission.
  • BACKGROUND OF THE INVENTION In a conventional cellular communication technology, a data communication process between two user equipments is shown in FIG. Services such as voice and data of the two user devices interact through the eB (evolved base station) and the core network where they reside.
  • D2D (Device-to-Device), which means that the user equipment can transmit data through a direct link in a close range, without forwarding through the central node (ie, the base station). as shown in picture 2.
  • D2D technology's short-range communication characteristics and direct communication methods have the following advantages:
  • the short-distance direct communication mode of the user equipment can achieve higher data rate, lower delay and lower power consumption.
  • the spectrum resources can be effectively realized by using the widely distributed user equipment in the network and the short-distance characteristics of the D2D communication link.
  • D2D's direct communication method can adapt to the local data sharing requirements of services such as wireless P2P, and provide flexible and adaptable data services;
  • D2D direct communication can take advantage of the large number of widely distributed communication user equipment in the network to extend the coverage of the network.
  • the LTE D2D technology refers to D2D communication controlled by an LTE network operating on an LTE licensed frequency band.
  • the advantages of D2D technology can be fully utilized, and the control of LTE network can also overcome some problems of traditional D2D technology, such as uncontrollable interference.
  • the introduction of LTE D2D features will enable LTE technology to evolve from pure wireless mobile cellular communication technology to Universal Connectivity Technology.
  • the present invention provides a method, system and device for data transmission for performing D2D communication indication between a plurality of user equipments under a cellular mobile communication network to implement D2D transmission.
  • a data transmission method provided by an embodiment of the present invention includes:
  • the network side device configures the user equipment for the wireless network temporary identifier RNTI for D2D communication and/or the information indicating field in the downlink control information DCI;
  • the network side device indicates a domain according to the information in the RNTI and/or the DCI, and the user equipment that communicates in the D2D communication on the network and the user equipment through link N2D Link is directly connected to the D2D link between the user equipments. Communication.
  • the network side device configures, for the user equipment, a first RNTI for indicating that the user equipment communicates on the D2D link;
  • the network side device configures, for the user equipment, a second RNTI for indicating that the user equipment performs data transmission on the D2D link, and/or a third for indicating that the user equipment performs data reception on the D2D link.
  • the network side device configures, for the user equipment, a group RNTI for indicating data reception in D2D group communication; and/or a second RNTI for indicating that the user equipment performs data transmission on the D2D link. .
  • the information indication field in the DCI is used to indicate that the user equipment sends or receives data on the D2D link.
  • the network side device configures, for the user equipment, a first RNTI for indicating that the user equipment communicates on the D2D link; and the information indication field in the DCI is used to indicate that the user equipment sends or receives data. .
  • the network side configures, for the user equipment, a group RNTI for indicating data reception in the D2D group communication; and/or the information indication field in the DCI is used to indicate that the user equipment is in the D2D link. Send or receive data on.
  • the network side device indicates, according to the information indicating domain in the RNTI and/or the DCI, that the user equipment that communicates in the D2D communication communicates on the D2D Link on the N2D Link, and includes:
  • the network side device indicates, according to the information indication field in the RNTI and/or the DCI, the user equipment that performs data transmission in the D2D communication on the N2D Link to send data on the D2D Link; according to the RNTI and/or the DCI
  • the information indication field indicates that the user equipment that performs data reception in the D2D communication on the N2D Link receives data on the D2D Link.
  • the network device on the N2D Link indicates that the user equipment that performs data transmission in the D2D communication sends data on the D2D Link, including:
  • the network side device transmits, in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined by the user equipment C-RNTI, the user equipment that performs data transmission in the D2D communication to send data on the D2D Link. DCI.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a second RNTI.
  • the network side device indicates, on the N2D Link, that the user equipment that performs data reception in the D2D communication is Receive data on the D2D Link, including:
  • the network side device transmits, in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined by the user equipment C-RNTI, the user equipment that receives data reception in the D2D communication receives data on the D2D Link. DCI.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a third RNTI.
  • the network device instructs the user equipment that performs data reception in the D2D communication to receive data on the D2D Link, including:
  • the received user equipment receives the DCI of the data on the D2D Link.
  • the DCI scrambled RNTI is a group RNTL
  • the user equipment receives the DCI, and performs D2D link communication according to the RNTI of the received DCI and/or the information indication field in the received DCI.
  • the user equipment performs D2D link communication, including:
  • the user equipment After receiving the DCI scrambled by the first RNTI for indicating that the user equipment communicates on the D2D link, the user equipment performs D2D link communication;
  • the user equipment After receiving the DCI scrambled by the second RNTI for indicating data transmission by the user equipment on the D2D link, the user equipment performs data transmission on the D2D link;
  • the user equipment After receiving the DCI scrambled by the third RNTI for indicating that the user equipment performs data reception on the D2D link, the user equipment performs data reception on the D2D link.
  • the user equipment performs D2D link communication, including:
  • the D2D link Data transmission After the user equipment receives the DCI scrambled by the user equipment to indicate data transmission on the D2D link, and the DCI used to indicate the group RNTI scrambling for data reception in the D2D group communication, the D2D link Data transmission;
  • the user equipment After receiving the DCI scrambled by the group RNTI for indicating data reception in the D2D group communication, the user equipment performs data reception on the D2D link.
  • the user equipment performs D2D link communication, including:
  • the user equipment After the user equipment receives the DCI including the information indication domain, if the information indication domain indicates that the user equipment is
  • D2D link communication When data is received on the D2D link, data is received on the D2D link.
  • the user equipment performs D2D link communication, including:
  • the user equipment After receiving the DCI scrambled by the first RNTI indicating that the user equipment communicates on the D2D link, the user equipment receives the data indication field, and if the information indication field indicates that the user equipment sends data, then the D2D Send data on the link;
  • the user equipment After receiving the DCI scrambled by the first RNTI for indicating that the user equipment communicates on the D2D link, the user equipment receives the data indicating that the user equipment receives the data, and then the D2D Data reception on the link.
  • the user equipment performs D2D link communication, including:
  • a DCI that includes an information indication field and is scrambled by the first RNTI for indicating that the user equipment performs communication on the D2D link, and the information indication field indicates that the user equipment sends data
  • the data transmission is performed on the D2D link
  • the user equipment receives the information indicating domain, and the C- RNTI scrambled DCI, and the information indication field indicates that the user equipment sends data on the D2D link, and after receiving the DCI scrambled by the group RNTI for indicating data reception in the D2D group communication, on the D2D link Data transmission;
  • the user equipment is scrambled upon receiving a group RNTI for data reception in indicating D2D group communication
  • the receiving, by the user equipment, the DCI includes:
  • the user equipment receives the DCI in a common search space of the PDCCH/EPDCCH and/or a PDCCH/EPDCCH-specific search space determined by the user equipment C-RNTI.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a second RNTI or a third RNTI.
  • the receiving, by the user equipment, the DCI includes:
  • the user equipment receives the DCI of the data on the D2D Link.
  • the RNTI of the DCI plus 4 is a group RNTI.
  • a configuration module configured to configure, by the user equipment, an information indication field in the RNTI and/or the DCI for the D2D communication; the indication module, configured to indicate the domain according to the information in the RNTI and/or the DCI, and indicate the D2D on the N2D Link User equipment communicating in communication communicates on the D2D Link.
  • the configuration module is specifically configured to:
  • the configuration module is specifically configured to:
  • a group RNTI for indicating data reception in the D2D group communication
  • a second RNTI for indicating that the user equipment performs data transmission on the D2D link.
  • the information indication field in the DCI is used to indicate that the user equipment sends or receives data on the D2D link.
  • the configuration module is specifically configured to:
  • the configuration module is specifically configured to:
  • a group RNTI for indicating data reception in the D2D group communication; and/or the information indication field in the DCI is used to indicate that the user equipment sends or receives data on the D2D link.
  • the indication module is specifically configured to:
  • the indication module is specifically configured to:
  • the DCI indicating that the user equipment performing data transmission in the D2D communication transmits the data on the D2D Link is transmitted.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a second RNTI.
  • the indication module is specifically configured to:
  • the DCI indicating that the user equipment performing data reception in the D2D communication receives the data on the D2D Link is transmitted.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a third RNTI.
  • the indication module is specifically configured to:
  • the RNTI of the DCI plus 4 is a group RNTI.
  • An embodiment of the present invention provides a network side device for data transmission, including a processor and a data transceiving interface, where: the processor is configured to: configure, in the RNTI and/or DCI for D2D communication, for the user equipment Information indicating domain; indicating a domain according to the information in the RNTI and/or DCI, indicating D2D communication in the N2D Link The user equipment communicating with the line communicates on the D2D Link;
  • the data transceiving interface is configured to implement communication between the processor and a user equipment.
  • a determining module configured to determine an information indication domain in the RNTI and/or DCI configured for the user equipment by the network side device for D2D communication;
  • the processing module is configured to receive the DCI, and perform D2D link communication according to the RNTI of the received DCI and/or the information indication field in the received DCI.
  • the processing module is specifically configured to:
  • the DCI After receiving the DCI scrambled by the first RNTI for indicating that the user equipment communicates on the D2D link, performing D2D link communication; receiving a second RNTI scrambling for indicating that the user equipment performs data transmission on the D2D link After the DCI, the data is transmitted on the D2D link; after receiving the DCI scrambled by the third RNTI indicating that the user equipment performs data reception on the D2D link, data reception is performed on the D2D link.
  • the processing module is specifically configured to:
  • the processing module is specifically configured to:
  • the DCI including the information indication field
  • the information indication field indicates that the user equipment sends data on the D2D link
  • the data is sent on the D2D link
  • the information indication field indicates that the user equipment receives on the D2D link Data
  • data is received on the D2D link.
  • the processing module is specifically configured to:
  • the information indication field indicates that the user equipment sends data, it is sent on the D2D link.
  • Data after receiving the DCI that contains the information indication field and is scrambled by the first RNTI for indicating that the user equipment communicates on the D2D link, if the information indication field indicates that the user equipment receives data, then on the D2D link Data reception.
  • the processing module is specifically configured to:
  • the DCI scrambled by the group RNTI indicating data reception in the D2D group communication data transmission is performed on the D2D link; upon receiving the DCI including the information indication field and scrambled by the C-RNTI of the user equipment, And the information indication field indicates that the user equipment sends data on the D2D link, and after receiving the DCI scrambled by the group RNTI for indicating data reception in the D2D group communication, performing data transmission on the D2D link; To the number used to indicate D2D group communication After receiving the DCI scrambled by the group RNTI, data reception is performed on the D2D link.
  • the processing module is specifically configured to:
  • the DCI is received in a common search space of the PDCCH/EPDCCH and/or a PDCCH/EPDCCH-specific search space determined by the user equipment C-RNTI.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a second RNTI or a third RNTI.
  • the processing module is specifically configured to:
  • the RNTI of the DCI plus 4 is a group RNTI.
  • An embodiment of the present invention provides a user equipment, where the user equipment includes a processor and a data transceiving interface, where: the processor is configured to: determine an RNTI configured for the user equipment by the network side device for D2D communication And/or the information indicating domain in the DCI; receiving the DCI, and performing D2D link communication according to the RNTI of the received DCI and/or the information indicating domain in the received DCI;
  • the data transceiver interface is configured to implement data transmission between the processor and the network side device and other user equipment.
  • a system for data transmission provided by an embodiment of the present invention includes:
  • a network side device configured to configure, by the user equipment, an information indication field in the RNTI and/or the DCI for D2D communication; instructing the domain according to the information in the RNTI and/or the DCI, indicating communication in the D2D communication on the N2D Link User equipment communicates on the D2D Link;
  • the user equipment is configured to receive the DCI, and perform D2D link communication according to the RNTI of the received DCI and/or the information indication field in the received DCI.
  • FIG. 1 is a schematic diagram of a data flow of user equipment communication in a cellular network in the background art
  • FIG. 2 is a schematic diagram of a data flow of a direct connection communication of a user equipment in the background art
  • FIG. 3 is a schematic diagram of direct communication of user equipment according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a system for data transmission according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a network side device in a system for data transmission according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of user equipment in a system for data transmission according to an embodiment of the present invention
  • FIG. 7 is a schematic flowchart of a method for a network side device to configure data transmission for a user equipment according to an embodiment of the present invention
  • FIG. 8 is a schematic flowchart of a method for data transmission of a user equipment according to an embodiment of the present invention.
  • the network side device indicates the domain according to the information in the RNTI and/or the DCI, and indicates on the N2D Link.
  • the user equipment communicating in the D2D communication communicates on the D2D Link, and can perform D2D communication indication between multiple user equipments under the cellular mobile communication network, thereby realizing D2D data transmission and improving system performance.
  • the D2D link in the embodiment of the present invention is a Device-to-Device Link (a straight-through link between user equipments); and the N2D Link is a network-to-device link (a network and a user equipment direct link).
  • the network side indicates that user equipment A transmits data on the D2D link on the N2D link. After receiving the indication from the network side device, user equipment A transmits data on the D2D link.
  • the network side indicates that user equipment B transmits data on the D2D link. After receiving the indication from the network side device, user equipment B transmits data on the D2D link.
  • two UEs perform D2D transmission, and may also be transmitted by multiple UEs as needed, for example, one UE transmits data, and multiple UEs receive data.
  • the system for data transmission in the embodiment of the present invention includes: a network side device 10 and a user equipment 20.
  • the network side device 10 is configured to configure, for the user equipment, an RNTK Radio Network Temporary Identifier for D2D communication, a wireless network temporary identifier, and/or a DCI (Downlink Control Information) information indicating domain, according to the RNTI and Or the information indicating field in the DCI, the user equipment that communicates in the D2D communication on the network and the user equipment through link N2D Link communicates on the direct link D2D Link between the user equipments; the user equipment 20 is used to determine the network
  • the side device is an information indication field in the RNTI and/or DCI configured for the user equipment for D2D communication; receiving the DCI, and performing the domain according to the RNTI of the received DCI and/or the information indication field in the received DCI D2D link communication.
  • the configuration when the network side device configuration information indicates the domain, the configuration may be explicitly or implicitly configured.
  • the explicit mode is to send an information notification;
  • the implicit mode is to use the D2D transmission mode, that is, to notify the user equipment 20 to use D2D transmission, and the user equipment knows that there is an information indication field in the DCI, and the meaning of the bit value in the information indication field can be preset. It can also be passed by the network side.
  • the network side device may configure a first RNTI for the user equipment to indicate that the user equipment communicates on the D2D link, and if the network side device needs to notify the user equipment to perform D2D communication, the first RNTI may be used to scramble the DCI. After being sent to the user equipment, the corresponding user equipment receives the DCI scrambled by the first RNTI, and then knows that the communication is performed on the D2D. Alternatively, the network side device configures the user equipment to indicate that the user equipment sends data on the D2D link.
  • the second RNTI may be used to scramble the DCI and then send the After receiving the DCI scrambled by the second RNTI, the user equipment knows that the data is transmitted on the D2D. If the data needs to be received, the third RNTI is used for scrambling.
  • the user equipment after receiving the DCI scrambled by the first RNTI for indicating that the user equipment communicates on the D2D link, the user equipment performs D2D link communication;
  • the user equipment After receiving the DCI scrambled by the second RNTI for indicating data transmission by the user equipment on the D2D link, the user equipment performs data transmission on the D2D link.
  • the user equipment After receiving the DCI scrambled by the third RNTI indicating that the user equipment performs data reception on the D2D link, the user equipment performs data reception on the D2D link.
  • the user equipment may send or receive data by itself; or the network side device may use another RNTI or the information indication field to instruct the user equipment to send or receive data. It should be noted that other embodiments that enable the user equipment to determine transmission or reception are also applicable to the embodiments of the present invention.
  • the network side device may configure, for the user equipment, a group RNTI for indicating data reception in the D2D group communication, so that the user equipment only receives broadcast or multicast information on the D2D link; and/or one for indicating The second RNTI that the user equipment performs data transmission on the D2D link.
  • the user equipment after receiving the second RNTI scrambled DCI for indicating that the user equipment performs data transmission on the D2D link, and the DCI for indicating the group RNTI scrambling for data reception in the D2D group communication, the user equipment is in D2D. Send data on the link;
  • the user equipment After receiving the DCI scrambled by the group RNTI for indicating data reception in the D2D group communication, the user equipment performs data reception on the D2D link.
  • the information indication field in the DCI is used to indicate that the user equipment sends or receives data on the D2D link.
  • the bit value corresponding to the information indicating field indicates different meanings, for example: the information indicating field may be 2-bit information, the MSB is used to indicate whether it is scheduling for the N2D link or the scheduling for the D2D link, 0 is the communication of the N2D link, and 1 is the D2D link communication.
  • the LSB is used to indicate whether the D2D link is sent or received, 0 for reception, and 1 for transmission. After the corresponding user equipment receives the DCI information indicating field as 11, it knows to send it on the D2D link.
  • the information indication field in the DCI is used to indicate that the user equipment is transmitting or receiving data.
  • the bit value corresponding to the information indication field indicates different meanings, for example, 1 is transmission, and 0 is reception. If the network side device needs to notify the user equipment to send in D2D, the information indication field may be set to 1, and the corresponding user equipment receives the DCI. Information indication field is 1 After that, you know that it is sent on D2D.
  • the user equipment after receiving the DCI including the information indication field, if the information indication field indicates that the user equipment sends data on the D2D link, the user equipment sends data on the D2D link; if the information indication field indicates that the user equipment is on the D2D link When receiving data, the data is received on the D2D link.
  • the network side device configures a first RNTI for the user equipment to indicate that the user equipment communicates on the D2D link; the information indication field in the DCI is used to indicate that the user equipment sends or receives data.
  • the bit value corresponding to the information indication field indicates different meanings, for example, 1 is transmission, and 0 is reception. If the network side device needs to notify the user equipment to send in D2D, the information indication field may be set to 1, and the corresponding user equipment receives the first After the information indicating field of an RNTI scrambled DCI is 1, it is known to transmit on the D2D. That is, the information indication field is added to the DCI scrambled by the first RNTI, thereby achieving the purpose of combining the indication of the RNTI and the information indication field.
  • the D2D link is Send data on;
  • the user equipment After receiving the DCI scrambled by the first RNTI indicating that the user equipment communicates on the D2D link, the user equipment performs data on the D2D link if the information indication field indicates that the user equipment receives the DCI. receive.
  • the network side device configures, for the user equipment, a group RNTI for indicating data reception in the D2D group communication, so that the user equipment only receives broadcast or multicast information on the D2D link; and/or the information indication in the DCI
  • the field is used to indicate that the user equipment sends or receives data on the D2D link.
  • the user equipment receives the DCI that is included in the information indicating field and is scrambled by the first RNTI for indicating that the user equipment communicates on the D2D link, and the information indicating field indicates that the user equipment sends data, and receives the data.
  • the user equipment After receiving the DCI scrambled by the received group RNTI in the D2D group communication, performing data transmission on the D2D link; the user equipment receives the DCI including the information indication field and being scrambled by the C-RNTI of the user equipment, and The information indication field indicates that the user equipment receives data on the D2D link, and receives the DCI scrambled by the group RNTI for receiving the reception in the D2D group communication, and performs data reception on the D2D link;
  • the user equipment After receiving the DCI scrambled by the group RNTI for receiving the reception in the D2D group communication, the user equipment performs data reception on the D2D link.
  • the network side device indicates the domain according to the information in the RNTI and/or the DCI, and the user equipment that performs data transmission in the D2D communication on the N2D Link transmits the data on the D2D Link; the domain is indicated according to the information in the RNTI and/or the DCI.
  • a user equipment indicating data reception in D2D communication on the N2D Link receives data on the D2D Link.
  • the network device indicates that the user equipment that performs data transmission in the D2D communication on the N2D Link is in the D2D.
  • the user equipment that performs data transmission in the D2D communication may be transmitted in the PDCCH/EPDCCH-specific search space determined by the PDCCH/EPDCCH in the common search space and/or the user equipment C-RNTI.
  • the DCI of the data sent on the D2D Link may be transmitted in the PDCCH/EPDCCH-specific search space determined by the PDCCH/EPDCCH in the common search space and/or the user equipment C-RNTI.
  • the DCI scrambled RNTI may be a C-RNTI or a first RNTI or a second RNTI.
  • the user equipment receives the DCI indicating D2D communication in a common search space of the PDCCH/EPDCCH and/or a PDCCH/EPDCCH-specific search space determined by the user equipment C-RNTI.
  • the network device indicates that the user equipment that performs data reception in the D2D communication on the N2D Link is in the D2D.
  • the user equipment that performs data reception in the D2D communication may receive the data on the D2D Link in the PDCCH/EPDCCH-specific search space determined by the PDCCH/EPDCCH in the common search space and/or the user equipment C-RNTI. DCI.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a third RNTI.
  • the user equipment is determined in the common search space of the PDCCH/EPDCCH and/or the user equipment C-RNTI
  • the DCI is received in the PDCCH/EPDCCH exclusive search space.
  • the network side device indicates, on the N2D Link, that the user equipment that performs data reception in the D2D communication transmits the DCI received by the D2D link in the common search space of the PDCCH/EPDCCH when receiving the data on the D2D Link; and/or in the user equipment.
  • the dedicated search space of the PDCCH/EPDCCH determined by the group RNTI the DCI indicating that the user equipment performing data reception in the D2D communication receives the data on the D2D Link is transmitted.
  • the RNTI of DCI plus 4 is a group RNTI.
  • the user equipment transmits the DCI received by the D2D link in a common search space of the PDCCH/EPDCCH; and/or receives the DCI in a dedicated search space of the PDCCH/EPDCCH determined by the group RNTI of the user equipment.
  • the configuration modes may be selected as needed, or may be combined in various configurations.
  • the first RNTI in configuration one and the DCI in configuration five can be used in combination.
  • the network side device When the network side device indicates that the user equipment transmits data on the D2D Link or the N2D Link, the following scheme can be used:
  • the network side device indicates the domain according to the information in the RNTI or DCI of the DCI, and indicates that the user equipment that needs to be transmitted on the D2D Link is transmitted on the D2D Link on the N2D Link.
  • the user equipment determines to transmit on the D2D Link according to the information indicating field in the RNTI or DCI of the scrambled DCI.
  • the signaling of the data transmission of the D2D link uses different RNTI identifiers, for example:
  • the RNTI for the N2D link can be the C-RNTI (C Radio Radio Network) under normal circumstances.
  • the RNTI for the D2D link may be a specific RNTI or a RNTI configured on the network side, such as D2D-C-RNTI. In this way, the user equipment passes the received scheduling signaling.
  • the RNTI can determine whether the current scheduling signaling indicates the data transmission of the N2D link or the number of D2D links. According to transmission.
  • scheduling signaling may be common through PDCCH (Physical Downlink Control Channel) / EPDCCH (Enhanced Physical Downlink Control Channel)
  • PDCCH Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • the search space and the UE (User Equipment)-specific search space determined by the C-RNTI on the N2D link are transmitted.
  • the scheduling signaling can follow the bit length of the DCI format already existing in LTE Rel-8/9/10/11, which does not increase the number of blind detections of user equipment.
  • the network side device sends, on the N2D Link, the first RNTI scrambled DCI corresponding to the user equipment that needs to transmit data on the D2D Link to the user equipment that needs to be transmitted on the D2D Link.
  • the user equipment determines to perform data transmission on the D2D Link.
  • the network side device is in the physical downlink control channel PDCCH/enhanced physical downlink control channel EPDCCH common search space and/or the PDCCH/EPDCCH exclusive search space determined according to the C-RNTI of the user equipment that needs to transmit data on the D2D Link. And transmitting the DCI scrambled by the first RNTI corresponding to the user equipment.
  • the user equipment is scrambled by the first RNTI corresponding to the user equipment in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment that needs to transmit data on the D2D Link. DCI.
  • Scenario 2 Differentiate the way that the information indicates the domain by adding the existing scheduling signaling (this method is likely to cause an increase in the number of blind detections):
  • an information indicating field is fixedly added to the scheduling signaling to indicate whether the current scheduling signaling is used for scheduling the N2D link or scheduling the D2D link.
  • the size of the information indicating field may be 1 bit or 2 bits.
  • the added information indication field may be 1 bit (the EPDCCH has no DCI ambiguity bit padding), and the example 3 ⁇ 4 port: 0 indicates N2D link, 1 Represents a D2D link.
  • the information indicated by the PDCCH may be 2 bits (the PDCCH needs to consider the 1-bit padding in the case of the ambiguous bit), for example: 00 N2D link, 11 indicates D2D link.
  • the signaling for scheduling the data transmission of the N2D link and scheduling the data transmission of the D2D link may use the same RNTI identifier, that is, the C-RNTI.
  • the DCI length and scheduling of the user equipment that schedules the traditional N2D transmission ie, only supports N2D transmission
  • the DCI length of the user equipment transmitted by N2D+D2D is different (as shown in scheme 2), then the corresponding scheduling signaling transmission methods are as follows: 2.1: The N2D transmission of the N2D+D2D user equipment is scheduled in the common search space of the EPDCCH/PDCCH.
  • the DCI format is the same as the traditional DCI format, and does not include the added information indication field in the scheme 2.
  • the DCI format of the transmission is the DCI format of the information indication domain added in the scheme 2, which can schedule the transmission of the N2D or the D2D. transmission. (This method does not increase the number of additional blind checks, but reduces the number of candidates for blind detection).
  • Method 2.2 Add a DCI format for blind detection in the public space, that is, increase the DCI format of the information indication field in scheme 2.
  • the DCI format transmitted by the user is the DCI format of the information indication domain added in scheme 2, which can schedule both N2D transmission and D2D transmission. (This method increases the number of blind checks for additional public space, but the number of additions is relatively small. According to the definition of the existing search space, only 6 blind detections are added).
  • the different bit value representation of the first information indication field is used to indicate whether to transmit data on the D2D Link or to transmit data on the N2D Link; the network side device sends the inclusion on the N2D Link to the user equipment that needs to be transmitted on the D2D Link.
  • the first information indicating the transmission of data on the D2D Link indicates the DCI of the domain.
  • the user equipment determines to perform data transmission on the D2D Link.
  • the first information of the transmitted data indicates the DCI of the domain.
  • the user equipment receives the DCI including the first information indication field for indicating the data transmission on the D2D Link in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment. .
  • the network side device indicates whether the user equipment is transmitting data or receiving data
  • the following scheme may be adopted: the network side device indicates the domain according to the information in the RNTI or DCI of the scrambled DCI, and indicates that the data needs to be sent on the D2D Link on the N2D Link.
  • the user equipment transmits data and receives on the N2D Link a user equipment that needs to receive data on the D2D Link.
  • the user equipment determines the transmission data or the reception data according to the information indicating field in the RNTI or DCI of the scrambled DCI.
  • Option 1 Use RNTI to distinguish between the receiving and sending of user equipment.
  • D2D user equipment that is, user equipments that can perform D2D and N2D
  • D2D user equipment that is, user equipments that can perform D2D and N2D
  • the scheduling signaling of the D2D-TX-RNTI identifier is D2D transmission, and the scheduling signaling of the D2D-RX-RNTI identifier is D2D reception.
  • a D2D user equipment can simultaneously configure one (or more) D2D-TX-RNTI and D2D-RX-RNTI.
  • multiple RNTIs can be configured for each user equipment, for example: D2D-TX-RNTI, which is used to identify the D2D user equipment for transmission, and one configuration is D2D-group-RX-RNTI, which is used to identify the UE in the group for receiving, when the user equipment in the group receives the D2D-TX at the same time.
  • D2D-TX-RNTI which is used to identify the D2D user equipment for transmission
  • D2D-group-RX-RNTI which is used to identify the UE in the group for receiving, when the user equipment in the group receives the D2D-TX at the same time.
  • the scheduling signaling can follow the DCI bit length already existing in LTE Rel-8/9/10/11, which does not increase the number of blind detections of user equipment.
  • the network side device sends a DCI scrambled by the second RNTI indicating that the user equipment transmits on the D2D link to the user equipment that needs to send data on the D2D link on the N2D Link; and needs to be in the D2D Link on the N2D Link.
  • the user equipment that receives the data sends a DCI that is used to indicate that the user equipment receives the third RNTI on the D2D link.
  • the N2D Link determines to send the data
  • the received data is determined.
  • the network side device sends the second RNTI scrambled DCI corresponding to the user equipment, where: the network side device is in the physical downlink control channel PDCCH/enhanced physical downlink control channel EPDCCH common search space and/or according to the D2D link.
  • the PDCCH/EPDCCH-specific search space determined by the C-RNTI of the user equipment that needs to send data, and the DCI that is scrambled by the second RNTI corresponding to the user equipment;
  • the network side device sends the third RNTI scrambled DCI corresponding to the user equipment, including:
  • the PDCCH/EPDCCH-specific search space transmission determined by the network side device in the physical downlink control channel PDCCH/enhanced physical downlink control channel EPDCCH common search space and/or according to the C-RNTI of the user equipment that needs to receive data on the D2D Link, by the user
  • the third RNTI scrambled DCI corresponding to the device.
  • the user equipment receives the DCI scrambled by the second RNTI corresponding to the user equipment, including:
  • the user equipment receives the second RNTI scrambled by the user equipment in the physical downlink control channel PDCCH/enhanced physical downlink control channel EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment.
  • DCI Downlink Control Channel
  • the user equipment receives the third RNTI scrambled DCI corresponding to the user equipment, including:
  • the user equipment receives the third RNTI scrambled by the user equipment in the physical downlink control channel PDCCH/enhanced physical downlink control channel EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment. DCI.
  • Scenario 2 By adding an information indicating field in the scheduling signaling, the indication field indicates whether the current scheduling signaling indicates whether to receive or transmit.
  • the size of the information indicating field may be 1 bit or 2 bits.
  • the information indication field may be 1 bit (the EPDCCH has no padding of DCI ambiguous bits), for example: 0 for reception and 1 for transmission.
  • the information indicated by the PDCCH may be 2 bits (the PDCCH needs to consider the 1-bit padding in the case of the ambiguous bit), for example: 00 Receive, 11 means send.
  • the scheduling signaling used to schedule the sending of the user equipment is used to indicate that the signaling used to indicate reception or transmission in the current signaling is set to the transmitting state, and the scheduling is performed in the group communication.
  • the scheduling signaling received by other user equipments is used to indicate that the signaling used to indicate reception or transmission in the current signaling is set to the receiving state.
  • the second information indicating the sending data indicates that different bit values of the domain indicate whether to send data or receive data; and the network side device sends, on the N2D Link, the user equipment that needs to be sent on the D2D Link, for indicating the sending data.
  • the second information indicates the DCI of the domain; the DCI containing the second information indicating field for indicating the received data is transmitted on the N2D Link to the user equipment that needs to be received on the D2D Link.
  • the user equipment receives the DCI including the second information indication field for indicating the transmission data on the N2D Link, determining to send the data;
  • the user equipment If the user equipment receives the DCI including the second information indication field for indicating the received data on the N2D Link, it determines to receive the data.
  • the network side device sends the DCI including the second information indication field for indicating the transmission data, including: the network side device in the PDCCH/EPDCCH common search space and/or according to the user equipment that needs to send data on the D2D Link. a PDCCH/EPDCCH-specific search space determined by the C-RNTI, where the transmission includes a DCI indicating a second information indication field of the transmitted data;
  • the network side device sends a DCI including a second information indicating field for indicating the received data, including:
  • the PDCCH/EPDCCH-specific search space determined by the network side device in the PDCCH/EPDCCH common search space and/or according to the C-RNTI of the user equipment that needs to receive data on the D2D Link, and the second information indication field for indicating the received data DCI.
  • the user equipment receives the DCI including the second information indication field for indicating the transmission data, including: the PDCCH/EPDCCH-specific search space determined by the user equipment in the PDCCH/EPDCCH common search space and/or according to the C-RNTI of the user equipment.
  • Receiving, by the user equipment, a DCI including a second information indicating domain for indicating the sending data, where the user equipment receives the DCI including the second information indicating domain for indicating the received data including:
  • the user equipment receives the DCI including the second information indication field for indicating the received data in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment.
  • the network side device has the following four processing methods:
  • the network side device can indicate whether the user equipment is in the D2D Link or the N2D according to the RNTI of the scrambled DCI.
  • the network side device may further indicate, according to the information indication field in the DCI, whether the user equipment transmits data on the D2D Link or the N2D Link; and if the data is transmitted on the D2D Link, whether the user equipment sends data or receives data;
  • the network side device may further indicate, according to the RNTI of the scrambled DCI, the user equipment to transmit data on the D2D Link or the N2D Link; and indicate, according to the information indication field in the DCI, whether the user equipment sends data or receives data;
  • the network side device may further indicate, according to the information indication field in the DCI, the user equipment to transmit data on the D2D Link or the N2D Link; and indicate, according to the RNTI of the scrambling DCI, whether the user equipment sends data or receives data, of course, this manner In fact, the above two indications can be completed through one RNTI, so this method will waste resources.
  • the following is a detailed description of the foregoing method 1 to mode 3.
  • the fourth method is similar to the above manners 1 to 3, and will not be described again.
  • Manner 1 The network side device indicates, according to the RNTI of the DCI, the user equipment that is sent in the D2D transmission on the N2D Link to send data on the D2D Link, and the user equipment that receives the reception in the D2D transmission receives the data on the D2D Link.
  • the user equipment that is sent by the network side device to the D2D transmission on the N2D Link sends a DCI scrambled by the second RNTI corresponding to the user equipment that sends the data on the D2D Link, and is forwarded on the N2D Link.
  • the user equipment that performs the receiving in the D2D transmission sends a DCI that is used to indicate the third RNTI scrambling corresponding to the receiving user equipment that receives the data on the D2D Link;
  • the user equipment receives the DCI scrambled by the second RNTI corresponding to the user equipment that sends the data on the D2D Link on the N2D Link, the data is sent on the D2D Link;
  • the user equipment receives the DCI scrambled by the third RNTI corresponding to the user equipment receiving the data received on the D2D Link on the N2D Link, the data is received on the D2D Link.
  • the second RNTI corresponding to the user equipment for transmitting the data on the D2D Link is: a second RNTI for indicating that the data is transmitted on the D2D Link, and the second RNTI is performed.
  • the second RNTI corresponding to the sent user equipment Subsequent similar descriptions will not be repeated.
  • the network side device is scrambled by the second RNTI corresponding to the user equipment that performs the transmission in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment that transmits the data.
  • DCI DCI scrambled by the third RNTI corresponding to the user equipment receiving the data in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment receiving the data;
  • the user equipment is in the PDCCH/EPDCCH common search space and/or according to the user equipment that sends the data.
  • the PDCCH/EPDCCH-specific search space determined by the C-RNTI receives the second corresponding to the user equipment that performs the transmission.
  • the user equipment receives the DCI scrambled by the third RNTI corresponding to the receiving user equipment in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment receiving the data.
  • the DCI scrambled by the second RNTI and the DCI scrambled by the third RNTI may be sent simultaneously or separately.
  • the network device sends a second RNTI scrambling corresponding to the user equipment that sends the data on the D2D Link to the user equipment that is sent in the D2D transmission in the group on the N2D Link.
  • the DCI is sent to all the user equipments in the group to indicate the DCI scrambled by the group RNTI corresponding to the group receiving the data on the D2D Link, so that the user equipment sending the data in the group sends the data on the D2D Link.
  • Other user equipments in the group receive data on the D2D Link.
  • the user equipment receives, on the N2D Link, a DCI that is used to indicate the second RNTI scrambling corresponding to the user equipment that transmits data on the D2D Link, and is used to indicate that the data is received on the D2D Link.
  • the data is sent on the D2D Link; that is, if the DCI scrambled by the second RNTI corresponding to the user equipment is received, the processing is performed only according to the indication of the second RNTI;
  • the user equipment N2D Link receives the DCI scrambled by the group RNTI corresponding to the group receiving the data on the D2D Link, and then receives the data on the D2D Link.
  • the DCI scrambled by the second RNTI and the DCI scrambled by the group RNTI may be sent simultaneously or separately.
  • the network side device sends the second RNTI scrambled DCI corresponding to the user equipment and the group RNTI corresponding to the group plus the DCI of the group, including:
  • the PDCCH/EPDCCH-specific search space transmitted by the network side device in the PDCCH/EPDCCH common search space and/or according to the C-RNTI of the user equipment that needs to transmit data on the D2D Link transmits the second corresponding to the user equipment.
  • the DCI scrambled by the RNTI transmits the DCI scrambled by the group RNTI corresponding to the group in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the group RNTI corresponding to the group.
  • the user equipment receives the DCI scrambled by the second RNTI corresponding to the user equipment, including:
  • the network side device is determined in the PDCCH/EPDCCH common search space and/or the C-RNTI of the user equipment.
  • the PDCCH/EPDCCH-specific search space transmits a DCI scrambled by the second RNTI corresponding to the user equipment;
  • the user equipment receives the group RNTI scrambled DCI corresponding to the group, including:
  • the network side device is determined in the PDCCH/EPDCCH common search space and/or according to the group RNTI
  • the PDCCH/EPDCCH-specific search space transmits the DCI scrambled by the group RNTI corresponding to the group.
  • the network side device needs to configure three for the user equipment.
  • the C-RNTI indicates that the N2D transmission is performed
  • the D2D-TX-RNTI is used to indicate that the data is transmitted on the D2D.
  • the D2D-RX-RNTI is used to indicate that data is received on the D2D.
  • the network side device needs to configure three RNTIs for the user equipment, that is, the C-RNTI indicates that the N2D transmission is performed, and the D2D-TX-RNTI is used to indicate that the data is transmitted on the D2D, the D2D-group-RX-RNTI It is used to indicate that the user equipment in the group receives data on the D2D.
  • the network side device indicates the domain according to the information in the DCI, and the user equipment that transmits the D2D transmission on the N2D Link transmits the data on the D2D Link, and the user equipment that receives the reception in the D2D transmission receives the data on the D2D Link. .
  • the network side device sends, by using an N2D Link, a DCI that includes a first information indication field for indicating data transmission on the D2D Link and a second information indication field for indicating transmission data, to the user equipment that is sent in the D2D transmission. Transmitting, by the N2D Link, a DCI including a first information indication field for indicating transmission of data on the D2D Link and a second information indication field for indicating reception of data to the user equipment receiving the D2D transmission;
  • the user equipment receives, by using the N2D Link, a first information indication field for indicating data transmission on the D2D Link and a DCI for indicating a second information indication field for transmitting data, transmitting data on the D2D Link; If the user equipment receives the first information indication field indicating the data transmission on the D2D Link and the DCI indicating the second information indication field of the received data through the N2D Link, the data is received on the D2D Link.
  • the network side device transmits, by using the EPDCCH, a first information indication field for indicating transmission of data on the D2D Link and a DCI indicating a second information indication field for transmitting data
  • the PDCCH transmission includes indication for indicating in D2D. a first information indication field for transmitting data on the Link and a DCI indicating a second information indicating field of the received data; or transmitting, by the PDCCH, a first information indication field for indicating transmission of data on the D2D Link and for indicating transmission
  • the second information of the data indicates the DCI of the domain
  • the DCI transmission includes a first information indication field for indicating transmission of data on the D2D Link and a DCI for indicating a second information indication field of the received data;
  • the user equipment receives, by using the EPDCCH, a first information indication field, which is used to indicate that the data is transmitted on the D2D Link, and a DCI, which is used to indicate the second information indication field of the transmission data, or is received by the PDCCH, and is included for indicating on the D2D Link.
  • a first information indication field of the transmission data and a DCI indicating a second information indication field of the transmission data the user equipment receiving, by using the EPDCCH, a first information indication field for indicating transmission of data on the D2D Link and indicating the received data
  • the second information indicates the DCI of the domain; or receives, by the PDCCH, a DCI including a first information indication field and a second information indication field indicating the received data.
  • the PDCCH/EPDCCH-specific search space transmission determined by the network side device in the PDCCH/EPDCCH common search space and/or according to the C-RNTI of the user equipment that needs to transmit data on the D2D Link includes the information for indicating that the data is transmitted on the D2D Link. a first information indication field and a DCI indicating a second information indication field of the transmission data; the network side device is determined in a PDCCH/EPDCCH common search space and/or according to a C-RNTI of a user equipment that needs to receive data on the D2D Link PDCCH/EPDCCH-specific search space transmission is included for indication in D2D
  • the user equipment receives, in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to its own C-RNTI, a first information indication field for indicating transmission of data on the D2D Link and for indicating The second information of the sent data indicates the DCI of the domain;
  • the user equipment receives, in a PDCCH/EPDCCH common search space and/or a PDCCH/EPDCCH-specific search space determined according to its own C-RNTI, a first information indication field for indicating transmission of data on the D2D Link and for indicating reception of data.
  • the second information indicates the DCI of the domain.
  • a first information indication field for indicating transmission of data on the D2D Link and a DCI for indicating a second information indication field for transmitting data and a first information indication field for indicating transmission of data on the D2D Link are included
  • the second information indicating the received data indicates that the DCI of the domain may be transmitted simultaneously or separately.
  • a first information indication field for indicating transmission of data on the D2D Link may be newly added information indicating fields in the DCI
  • the bit value may also be a new value in the bit value in the information indicating field in the existing information in the DCI.
  • two information indication fields are added to the DCI, and the first information indicates whether the field indicates D2D or N2D transmission, and the second information indicates whether the field indicates transmission or reception.
  • each information indication field is 1 bit
  • the first information indicates that 0 indicates D2D in the field, 1 indicates N2D
  • the second information indicates that 0 indicates transmission in the domain
  • 0 indicates reception, if the network side device sends the signal on the D2D.
  • the user equipment indicates that the first information indicates that the domain is 0 (ie, the first information indicates the domain), and the second information indicates that the domain is 1 (ie, the second information indicating the data is used to indicate the domain);
  • the side device indicates to the user equipment received on the D2D, and the first information indicates that the domain is 0 (ie, the first information indication field), and the second information indicates that the domain is 0 (ie, the second is used to indicate the received data).
  • Information indicates the domain).
  • the network device sends a first information indication field for indicating the transmission of data on the D2D link to the user equipment that transmits the D2D transmission in the group on the N2D Link and is used for
  • the second information indicating the transmission data indicates the DCI of the domain, and sends a first information indication field for indicating that the data is transmitted on the D2D Link and a second information indication field for indicating the received data to all user equipments in the group.
  • DCI so that the user equipment that sends data in the group sends data on the D2D Link, and other user equipments in the group receive data on the D2D Link.
  • the user equipment receives, on the N2D Link, a first information indication field for indicating data transmission on the D2D Link and a DCI for indicating a second information indication field for transmitting data, and receiving the inclusion for indicating
  • the data is transmitted on the D2D Link; that is, if the reception is included to indicate the transmission on the D2D Link
  • the first information indication field of the data and the DCI of the second information indication field for indicating the transmission data are processed only according to the indication of the first information indication field and the second information indication field for indicating the transmission data;
  • the user equipment receives a first information indication on the N2D Link that is used to indicate that data is transmitted on the D2D Link After the domain and the second information indicating the received data indicate the DCI of the domain, the data is received on the D2D Link.
  • the network side device sends a DCI that includes a first information indication field for indicating data transmission on the D2D Link and a second information indication field for indicating data to be sent, including:
  • the PDCCH/EPDCCH-specific search space transmission determined by the network side device in the PDCCH/EPDCCH common search space and/or according to the C-RNTI of the user equipment that needs to transmit data on the D2D Link includes a first indication for transmitting data on the D2D Link
  • the information indication field and the second information indicating the transmission of the data indicate the DCI of the domain
  • the network side device sends a DCI including a first information indication field for indicating data transmission on the D2D Link and a second information indication field for indicating the received data, including:
  • the network side device transmits the DCI including the first information indication field and the second information indication field indicating the received data in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the group.
  • the user equipment receives the DCI including the first information indication field for indicating data transmission on the D2D Link and the second information indication field for indicating the transmission data, including:
  • the user equipment receives, in a PDCCH/EPDCCH common search space and/or a PDCCH/EPDCCH-specific search space determined according to a C-RNTI of the user equipment, a first information indication field for indicating transmission of data on the D2D Link and for indicating transmission data.
  • the second information indicates the DCI of the domain;
  • the user equipment receives a DCI including a first information indication field for indicating data transmission on the D2D Link and a second information indication field for indicating the received data, including:
  • the user equipment receives, in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the group, a first information indication field for indicating transmission of data on the D2D Link and for indicating reception data.
  • the second information indicates the DCI of the domain.
  • the first information indicating domain and the second information indicating domain may also be combined into one information indicating domain.
  • the information indicating the field clock indicates that the communication is on the D2D or the N2D, and the indication is Send or receive. For example, two bits, 00 means to communicate on N2D, 01 means to send on D2D, and 10 means to receive on D2D.
  • the network side device indicates the domain according to the information in the RNTI and the DCI of the scrambling DCI, and indicates, on the N2D Link, the user equipment that is sent in the D2D transmission to send data on the D2D Link, and the user equipment that indicates the reception in the D2D transmission. Receive data on the D2D Link.
  • the network side device sends, on the N2D Link, the first RNTI corresponding to the user equipment that is used to transmit the data on the D2D link, and is included in the indication, and includes Transmitting the second information of the data indicating the DCI of the domain; and transmitting, on the N2D Link, the first RNTI scrambled by the user equipment receiving the D2D transmission to indicate that the receiving user equipment transmitting the data on the D2D Link corresponds to the receiving And including a DCI indicating a second information indicating domain of the received data;
  • the user equipment receives, on the N2D Link, the first RNTI scrambling corresponding to the transmitting user equipment indicating that the data is transmitted on the D2D Link, and includes the DCI indicating the second information indicating field of the transmission data. , then send data on the D2D Link;
  • the user equipment receives the first RNTI scrambling corresponding to the receiving user equipment for transmitting data on the D2D Link on the N2D Link, and includes the DCI indicating the second information indicating field of the received data, Receive data on the D2D Link.
  • the network side device transmits, in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment that transmits the data, the user for transmitting the data for indicating transmission on the D2D Link.
  • the first RNTI corresponding to the device is scrambled, and includes a DCI indicating a second information indicating domain for transmitting data;
  • the network side device transmits, in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment that receives the data, the first corresponding to the user equipment that indicates that the data is transmitted on the D2D Link.
  • An RNTI is scrambled and includes a DCI indicating a second information indicating domain of the received data.
  • the user equipment is in the PDCCH/EPDCCH common search space and/or according to the user equipment that sends the data.
  • the PDCCH/EPDCCH-specific search space determined by the C-RNTI receives a first RNTI scrambling corresponding to the transmitting user equipment indicating that the data is transmitted on the D2D Link, and includes a DCI indicating a second information indicating field of the transmitted data. ;
  • the user equipment receives, in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment that receives the data, the first corresponding to the user equipment that indicates that the data is transmitted on the D2D Link.
  • the RNTI scrambles and includes a DCI indicating the second information indicating the received data.
  • the DCI is scrambled by the first RNTI
  • the DCI of the second information indication field for indicating the transmission data is scrambled by the first RNTI
  • the DCI including the second information indication field for indicating the received data can be simultaneously transmitted. , can also be sent separately.
  • the newly added information in the DCI indicates the bit value in the domain, or the bit value in the existing information indicating field in the DCI is assigned a new meaning.
  • an information indication field is added to the DCI, and the information indicates whether the field indicates transmission or reception.
  • the information indicates that the field is 1 bit, the information indicating field 0 indicates transmission, and 0 indicates reception. If the network side device indicates the user equipment sent on the D2D, the information indicates that the domain is 1 (ie, used to indicate the transmission data. The second information indicating field) and scrambling the DCI including the information indicating domain by the fourth RNTI; if the network side device indicates the user equipment received on the D2D, the information indicating that the domain is 0 (ie, for indicating The second information receiving the data indicates the domain), and the DCI containing the information indicating domain is scrambled by the fourth RNTI.
  • the network device sends a first RNTI scrambling corresponding to the user equipment that transmits the data on the D2D Link to the user equipment that is transmitted in the D2D transmission in the group on the N2D Link. And including a DCI indicating a second information indication field of the transmission data; transmitting, to the user equipment in the group, a first RNTI scrambling corresponding to the group indicating the data transmission on the D2D Link, and including The second information of the received data indicates the DCI of the domain, so that the user equipment that sends data in the group sends data on the D2D Link, and other user equipments in the group receive data on the D2D Link.
  • the user equipment receives, on the N2D Link, a first RNTI scrambling corresponding to the user equipment for indicating data transmission on the D2D Link, and includes a second information indication for indicating transmission data.
  • the DCI of the domain, and the first RNTI scrambling corresponding to the group indicating the data transmission on the D2D Link, and including the DCI for indicating the second information indicating domain of the received data transmitting the data on the D2D Link That is, if the first RNTI scrambling is received and the DCI indicating the second information indicating field of the transmission data is included, the indication of the domain is indicated only according to the first RNTI and the second information indicating the transmission data.
  • the user equipment receives the DCI corresponding to the group indicating the data transmission on the D2D Link, and includes the DCI for indicating the second information indicating the received data. Receive data on the D2D Link.
  • the network side device sends a first RNTI scrambling corresponding to the user equipment, and includes a DCI indicating a second information indicating domain of the sending data, including:
  • the network side device performs the first RNTI scrambling corresponding to the PDCCH/EPDCCH dedicated search space and the PDCCH/EPDCCH-specific search space determined by the C-RNTI of the user equipment that needs to transmit data on the D2D Link, and includes The second information indicating the sending data indicates the DCI of the domain;
  • the network side device sends the first RNTI scrambling corresponding to the group, and includes a DCI for indicating the second information indication field of the received data, including:
  • the network side device is scrambled in the PDCCH/EPDCCH common search space and/or the first RNTI corresponding to the PDCCH/EPDCCH-specific search space transmission group determined according to the first RNTI corresponding to the group, and includes a second for indicating the received data.
  • the information indicates the DCI of the domain.
  • the user equipment receives the first RNTI scrambling, and includes a DCI indicating a second information indicating domain of the sending data, including:
  • the user equipment receives the first RNTI scrambling in the PDCCH/EPDCCH common search space and/or the PDCCH/EPDCCH-specific search space determined according to the C-RNTI of the user equipment, and includes a DCI indicating a second information indicating domain of the transmitted data;
  • the user equipment receives the first RNTI scrambling, and includes a DCI indicating a second information indicating domain of the received data, including:
  • the user equipment is determined in the PDCCH/EPDCCH common search space and/or according to the first RNTI corresponding to the group.
  • the PDCCH/EPDCCH-specific search space receives the first RNTI scrambling and includes a DCI indicating a second information indicating domain of the received data.
  • the network side device needs to configure two RNTIs for the user equipment, that is, the C-RNTI indicates N2D transmission, and the D2D-RNTI is used to indicate that data is transmitted on the D2D.
  • the network side device needs to configure two RNTIs for the user equipment, that is, the C-RNTI indicates that the N2D transmission is performed, and the D2D-group RNTI is used to indicate that the user equipment in the group transmits data on the D2D.
  • first RNTI the second RNTI
  • third RNTI the group RNTI, and the like are only used to distinguish RNTIs of different meanings, that is, although they are all the first RNTIs, they can only represent all the first RNTIs. Used to indicate that data is transmitted on the D2D Link, but not all are the same RNTI.
  • the following takes the first RNTI as an example for description.
  • the first RNTI sent by user equipment A and the first RNTI sent by user equipment B are different RNTIs.
  • the first RNTI sent to the user equipment A is the first RNTI allocated to the user equipment A;
  • the first RNTI sent to the user equipment B is the first RNTI allocated to the user equipment B.
  • the user equipment A After receiving the DCI scrambled by the first RNTI corresponding to the user equipment A, the user equipment A knows that the DCI is its own; after receiving the DCI scrambled by the first RNTI corresponding to the user equipment A, the user equipment B knows the DCI. Not your own.
  • the first RNTI may also be allocated to a group of user equipments, and then the corresponding first RNTIs are respectively allocated to each user equipment in the group, so that the user equipment can determine whether the DCIs scrambled by different first RNTIs need to be received. After receiving the corresponding first RNTI, the processing is performed according to the indication of the first RNTI.
  • Embodiment 1 By means of adding information indicating fields in scheduling signaling, jointly distinguishing whether the current scheduling is N2D link or
  • the D2D link, and the scheduling signaling that distinguishes the current network side device, is whether the D2D link is sent or received.
  • the network side device indicates, by using the scheduling signaling on the N2D link, that the D2D user equipment A performs data reception or reception on the D2D link according to the specified transmission attribute on the designated resource, and distinguishes the current network side device from the D2D user equipment.
  • the scheduling signaling is for the scheduling of the N2D link or the scheduling of the D2D link, and whether the scheduling signaling of the current network side device is the transmission of the D2D link or the reception, this situation may be jointly indicated:
  • the information in the PDCCH/EPDCCH is fixed by 2 bits.
  • the MSB is used to indicate the scheduling of the N2D link or the scheduling of the D2D link. For example, 0 indicates the scheduling of the N2D link, and 1 indicates the scheduling of the D2D link.
  • the LSB is used to indicate whether the D2D link is sent or received. For example: 0 means reception and 1 means transmission. (The addition of 2 bits here does not cause the blurring phenomenon after the ambiguous bit padding does not know the current D2D link or N2D link only.) In this case, if the MSB value is 0, the LSB value of 0 or 1 is invalid. In this case, the LSB fixed value is 0 or 1, which is used for PDCCH/EPDCCH consistency detection, and reduces the PDCCH/EPDCCH false detection probability.
  • Embodiment 2 Jointly distinguishing whether a current N2D link is scheduled by configuring multiple RNTIs for one UE.
  • the D2D link, and the scheduling signaling that distinguishes the current network side device, is whether the D2D link is sent or received.
  • RNTIs are configured for one UE, for example: C-RNTI is used for scheduling on the N2D link, D2D-TX-RNTI is used for scheduling D2D link transmission, and D2D-RX-RNTI is used for scheduling D2D link reception. If there is group communication, a D2D-group-RX-RNTI can be configured for the group communication user to schedule the group user to receive on the D2D link.
  • the D2D user equipment After receiving the scheduling/instruction signaling sent on the N2D link of the network side device, the D2D user equipment transmits/receives data according to the indication of the network side device after a predetermined time offset.
  • the user equipment After receiving the scheduling/instruction signaling sent by the N2D link, the user equipment needs to include two parts of processing time: the time for detecting the DCI, and the time for the user equipment to switch (about 20us).
  • the predetermined time offset may be n+k, where n is a subframe in which the network side transmits scheduling/indication signaling on the N2D link, k is the number of offset subframes, and the D2D user equipment is in the n+k subframe. Send/receive D2D link.
  • k can be fixed to 4.
  • k is associated with the TDD UL/DL subframe configuration, and the D2D link is associated with the UL/DL subframe transmission, if the uplink subframe is used, then between the UL grant and the PUSCH of the LTE TDD
  • the timing relationships are the same (k values are determined according to the table defined in the existing 36.213).
  • One-to-one communication scenario for example: D2D user equipment A transmission, D2D user equipment B reception
  • the network side schedules D2D user equipment A to transmit through the signaling indicated by the dedicated RNTI of the D2D user equipment A, and the network side equipment passes the D2D user.
  • the signaling indicated by the dedicated RNTI of device B indicates that D2D user equipment B receives.
  • it can be transmitted independently by one-to-one communication.
  • a one-to-many communication scenario for example, D2D user equipment A sends, D2D user equipment B, C, D receives
  • the network side device first groups the D2D user equipments A, B, C, and D into a group, and establishes a group-RNTI.
  • the network side transmits the D2D user equipment A by using the signaling indicated by the dedicated RNTI of the D2D user equipment A, and the network side equipment indicates the D2D user equipment B, C by the group-RNTI of the D2D user equipments A, B, C, and D.
  • the D receiving wherein, for the D2D user equipment A, the signaling that the scheduled D2D user equipment A indicated by the dedicated RNTI performs transmission covers the received signaling indicated by the group-RNTI.
  • the signaling indicated by the group-RNTI may be transmitted through the common search space of the PDCCH/EPDCCH, or may also be defined in a new common search space for D2D scheduling.
  • the network side device in the system for data transmission in the embodiment of the present invention includes: a configuration module 500 and an indication module 510.
  • the configuration module 500 is configured to configure, for the user equipment, an information indication domain in the RNTI and/or DCI for D2D communication;
  • the indication module 510 is configured to indicate, according to the information indication field in the RNTI and/or the DCI, the user equipment that communicates in the D2D communication on the N2D Link to communicate on the D2D Link.
  • the configuration module 500 is specifically configured to:
  • the configuration module 500 is specifically configured to:
  • a user equipment is configured with a group RNTI for indicating data reception in the D2D group communication; and/or a second RNTI for indicating that the user equipment performs data transmission on the D2D link.
  • the information indication field in the DCI is used to indicate that the user equipment sends or receives data on the D2D link.
  • the configuration module 500 is specifically configured to:
  • the user equipment is configured with a first RNTI for indicating that the user equipment communicates on the D2D link; the information indication field in the DCI is used to indicate that the user equipment sends or receives data.
  • the configuration module 500 is specifically configured to:
  • a user equipment is configured with a group RNTI for indicating data reception in D2D group communication; and/or an information indication field in the DCI is used to indicate that the user equipment transmits or receives data on the D2D link.
  • the indication module 510 is specifically configured to:
  • the user equipment that performs data transmission in the D2D communication on the N2D Link transmits data on the D2D Link; indicates the domain according to the information in the RNTI and/or the DCI, and indicates on the N2D Link
  • the user equipment that performs data reception in D2D communication receives data on the D2D Link.
  • the indication module 510 is specifically configured to:
  • the DCI indicating that the user equipment performing data transmission in the D2D communication transmits the data on the D2D Link is transmitted.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a second RNTI.
  • the indication module 510 is specifically configured to:
  • the DCI indicating that the user equipment performing data reception in the D2D communication receives the data on the D2D Link is transmitted.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a third RNTI.
  • the indication module 510 is specifically configured to:
  • the DCI plus 4 RNTI is a group RNTI.
  • An embodiment of the present invention provides a network side device for data transmission, including a processor and a data transceiving interface, where: the processor is configured to: configure, in the RNTI and/or DCI for D2D communication, for the user equipment An information indication field; according to the information indication domain in the RNTI and/or the DCI, indicating, on the N2D Link, that the user equipment that performs communication in the D2D communication communicates on the D2D Link;
  • the data transceiving interface is configured to implement communication between the processor and a user equipment.
  • the user equipment in the system for data transmission in the embodiment of the present invention includes: a determining module 600 and a processing module 610.
  • a determining module 600 configured to determine, by the network side device, the RNTI configured for the user equipment for D2D communication and/or
  • the information in the DCI indicates the domain
  • the processing module 610 is configured to receive the DCI, and perform D2D link communication according to the RNTI of the received DCI and/or the information indication field in the received DCI.
  • the processing module 610 is specifically configured to:
  • D2D link communication after receiving the DCI scrambled by the second RNTI for indicating that the user equipment sends on the D2D link, transmitting on the D2D link; receiving the indication that the user equipment receives on the D2D link After the DCI scrambled by the third RNTI, the transmission is performed on the D2D link.
  • the processing module 610 is specifically configured to:
  • the processing module 610 is specifically configured to:
  • the information indication field indicates that the user equipment sends on the D2D link, it transmits on the D2D link; if the information indication field indicates that the user equipment receives on the D2D link, on the D2D link Receive.
  • the processing module 610 is specifically configured to:
  • the sending is performed on the D2D link;
  • the DCI that contains the information indication field and is scrambled by the first RNTI for indicating that the user equipment communicates on the D2D link if the information indication field indicates that the user equipment receives, the reception is performed on the D2D link.
  • the processing module 610 is specifically configured to:
  • Receiving the first RNTI containing the information indication field and indicating that the user equipment is communicating on the D2D link The scrambled DCI, and the information indication field indicates the user equipment to send, and after receiving the DCI scrambled by the group RNTI for receiving the reception in the D2D group communication, transmitting on the D2D link; receiving the information indication a domain, and a DCI scrambled by the C-RNTI of the user equipment, and the information indication field indicates that the user equipment transmits on the D2D link, and after receiving the DCI scrambled by the group RNTI for indicating reception in the D2D group communication , transmitting on the D2D link; receiving the D2D link after receiving the DCI scrambled by the group RNTI for receiving the D2D group communication.
  • the processing module 610 is specifically configured to:
  • the DCI is received in a common search space of the PDCCH/EPDCCH and/or a PDCCH/EPDCCH-specific search space determined by the user equipment C-RNTI.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a second RNTI or a third RNTI.
  • the processing module 610 is specifically configured to:
  • the DCI plus 4 RNTI is a group RNTI.
  • An embodiment of the present invention provides a user equipment, where the user equipment includes a processor and a data transceiving interface, where: the processor is configured to: determine an RNTI configured for the user equipment by the network side device for D2D communication And/or the information indicating domain in the DCI; receiving the DCI, and performing D2D link communication according to the RNTI of the received DCI and/or the information indicating domain in the received DCI;
  • the data transceiver interface is configured to implement data transmission between the processor and the network side device and other user equipment.
  • the embodiment of the present invention further provides a method for the network side device to configure data transmission for the user equipment, and the network side device corresponding to the method is the network side device in the system for data transmission according to the embodiment of the present invention.
  • the principle of the method for solving the problem is similar to that of the system. Therefore, the implementation of the method can be referred to the implementation of the system for data transmission, and the repeated description is not repeated.
  • the method for configuring data transmission for a user equipment by a network side device includes the following steps: Step 701: A network side device configures, for a user equipment, a radio network temporary identifier RNTI and/or downlink for D2D communication. The information indicating domain in the control information DCI;
  • Step 702 The network side device indicates the domain according to the information in the RNTI and/or the DCI, and indicates, on the N2D Link, the user equipment that communicates in the D2D communication to communicate on the D2D Link.
  • the network side device may configure a first RNTI for the user equipment to indicate that the user equipment communicates on the D2D link, and if the network side device needs to notify the user equipment to perform D2D communication, the first RNTI may be used to scramble the DCI. After being sent to the user equipment, the corresponding user equipment receives the DCI scrambled by the first RNTI, and then knows that it is in D2D. Or the network side device configures, for the user equipment, a second RNTI for indicating that the user equipment performs data transmission on the D2D link, and/or a third RNTI for indicating that the user equipment performs data reception on the D2D link.
  • the second RNTI may be used to scramble the DCI and then sent to the user equipment. After receiving the DCI scrambled by the second RNTI, the corresponding user equipment knows to send the data on the D2D. Data, if it is necessary to indicate the reception of data, it can be scrambled with the third RNTI.
  • the network side device may configure, for the user equipment, a group RNTI for indicating data reception in the D2D group communication, so that the user equipment only receives broadcast or multicast information on the D2D link; and/or one for indicating The second RNTI that the user equipment performs data transmission on the D2D link.
  • the information indication field in the DCI is used to indicate that the user equipment sends or receives data on the D2D link.
  • the bit value corresponding to the information indication field indicates different meanings, for example, 1 is sent on the D2D link, and 0 is received on the D2D link. If the network side device needs to notify the user equipment to send data in the D2D, the information indication field may be set as 1. After the corresponding user equipment receives the DCI information indicating field as 1, it knows that the data is sent on the D2D.
  • the network side device configures a first RNTI for the user equipment to indicate that the user equipment communicates on the D2D link; the information indication field in the DCI is used to indicate that the user equipment sends or receives data.
  • This configuration combines the RNTI and the information indication domain. That is, the information indication field is added to the DCI scrambled by the first RNTI, thereby achieving the purpose of combining the indication of the RNTI and the information indication field.
  • the network side device configures, for the user equipment, a group RNTI for indicating data reception in the D2D group communication, so that the user equipment only receives broadcast or multicast information on the D2D link; and/or the information indication in the DCI
  • the field is used to indicate that the user equipment sends or receives data on the D2D link.
  • the network side device indicates the domain according to the information in the RNTI and/or the DCI, and the user equipment that performs data transmission in the D2D communication on the N2D Link transmits the data on the D2D Link; the domain is indicated according to the information in the RNTI and/or the DCI.
  • a user equipment indicating data reception in D2D communication on the N2D Link receives data on the D2D Link.
  • the PDCCH/EPDCCH-specific search space that can be determined in the common search space of the PDCCH/EPDCCH and/or the C-RNTI of the user equipment when the user equipment that performs data transmission in the D2D communication transmits the data on the D2D Link on the N2D Link.
  • the transmission indicates that the user equipment performing data transmission in the D2D communication transmits the DCI of the data on the D2D Link.
  • the DCI scrambled RNTI may be a C-RNTI or a first RNTI or a second RNTI.
  • the DCI that receives the data received by the user equipment that performs data reception in the D2D communication on the D2D Link is transmitted.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a third RNTI.
  • the network device indicates that the user equipment that performs data reception in the D2D communication on the N2D Link is in the D2D.
  • the DCI received by the D2D link is transmitted in the common search space of the PDCCH/EPDCCH; and/or in the dedicated search space of the PDCCH/EPDCCH determined by the group RNTI of the user equipment, the transmission indicates data reception in the D2D communication.
  • the user equipment receives the DCI of the data on the D2D Link.
  • the RNTI of DCI plus 4 is a group RNTI.
  • the embodiment of the present invention further provides a method for data transmission of a user equipment, where the user equipment corresponding to the method is a user equipment in a system for data transmission according to an embodiment of the present invention, and the method solves the problem. Similar to the system, therefore, the implementation of the method can be referred to the implementation of the system for data transmission, and the repetition will not be repeated.
  • the method for data transmission of a user equipment includes the following steps:
  • Step 801 The user equipment determines, by the network device, the RNTI configured for the user equipment for D2D communication and/or
  • the information in the DCI indicates the domain
  • Step 802 The user equipment receives the DCI, and performs D2D link communication according to the RNTI of the received DCI and/or the information indication field in the received DCI.
  • the user equipment performs D2D link communication, including:
  • the user equipment After receiving the DCI scrambled by the first RNTI for indicating that the user equipment communicates on the D2D link, the user equipment performs D2D link communication;
  • the user equipment After receiving the DCI scrambled by the second RNTI for indicating data transmission by the user equipment on the D2D link, the user equipment performs data transmission on the D2D link.
  • the user equipment After receiving the DCI scrambled by the third RNTI indicating that the user equipment performs data reception on the D2D link, the user equipment performs data reception on the D2D link.
  • the user equipment performs D2D link communication, including:
  • the user equipment After receiving the second RNTI scrambled DCI for instructing the user equipment to perform data transmission on the D2D link and the DCI for indicating the group RNTI scrambling for data reception in the D2D group communication, the user equipment performs on the D2D link.
  • Data transmission After receiving the second RNTI scrambled DCI for instructing the user equipment to perform data transmission on the D2D link and the DCI for indicating the group RNTI scrambling for data reception in the D2D group communication, the user equipment performs on the D2D link.
  • the user equipment After receiving the DCI scrambled by the group RNTI for indicating data reception in the D2D group communication, the user equipment performs data reception on the D2D link.
  • the user equipment performs D2D link communication, including:
  • the user equipment After receiving the DCI including the information indication field, if the information indication field indicates that the user equipment sends data on the D2D link, the user equipment performs data transmission on the D2D link; if the information indication field indicates that the user equipment receives data on the D2D link, Data is then received on the D2D link.
  • the user equipment performs D2D link communication, including:
  • the user equipment After receiving the DCI scrambled by the first RNTI indicating that the user equipment communicates on the D2D link, the user equipment performs data on the D2D link if the information indication field indicates that the user equipment sends data. Send
  • the user equipment After receiving the DCI that is included in the information indicating field and is used by the user equipment to indicate that the user equipment is communicating on the D2D link, if the information indicating field indicates that the user equipment receives the data, the user equipment performs the D2D link. Data reception.
  • the user equipment performs D2D link communication, including:
  • the user equipment receives the DCI that includes the information indication field and is scrambled by the first RNTI for indicating that the user equipment communicates on the D2D link, and the information indication field indicates that the user equipment sends data, and the received information is used to indicate D2D.
  • the DCI scrambled by the group RNTI for data reception in the group communication data reception is performed on the D2D link;
  • the user equipment receives the DCI including the information indication field and is scrambled by the C-RNTI of the user equipment, and the information indication field indicates that the user equipment sends data on the D2D link, and the reception is performed by the D2D group communication. After the data received by the group RNTI scrambled DCI, data transmission is performed on the D2D link;
  • the user equipment After receiving the DCI scrambled by the group RNTI for indicating data reception in the D2D group communication, the user equipment performs data reception on the D2D link.
  • the user equipment receives the DCI, including:
  • the user equipment is determined in the common search space of the PDCCH/EPDCCH and/or the user equipment C-RNTI
  • the DCI is received in the PDCCH/EPDCCH exclusive search space.
  • the DCI scrambled RNTI is a C-RNTI or a first RNTI or a second RNTI or a third RNTI.
  • the user equipment receives the DCI, including:
  • the DCI plus 4 RNTI is a group RNTI.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • 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 implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Abstract

La présente demande concerne le domaine technique des radiocommunications, et en particulier un procédé, un système et un dispositif de transmission de données, pour diriger une communication D2D entre de multiples dispositifs utilisateurs dans un réseau de communication mobile cellulaire afin de réaliser une transmission D2D. Le procédé selon un mode de réalisation de la présente demande comprend l'opération suivante : sur une liaison N2D, un dispositif côté réseau dirige les dispositifs utilisateurs communiquant dans la transmission D2D afin de communiquer sur une liaison D2D. Etant donné qu'un dispositif côté réseau, sur une liaison N2D et conformément au champ d'indication d'informations figurant dans un RNTI et/ou des DCI, dirige les dispositifs utilisateurs communiquant dans la transmission D2D afin de communiquer sur une liaison D2D, le dispositif côté réseau peut diriger la communication D2D entre de multiples dispositifs utilisateurs dans un réseau de communication mobile cellulaire de manière à réaliser une transmission D2D, améliorant ainsi les performances du système.
PCT/CN2014/072950 2013-03-08 2014-03-06 Procédé, système et dispositif de transmission de données WO2014135090A1 (fr)

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Cited By (2)

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WO2016074201A1 (fr) * 2014-11-13 2016-05-19 华为技术有限公司 Procédé et dispositif de rapport d'un rapport d'état de mémoire tampon (bsr) dans un processus d'accès aléatoire
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* Cited by examiner, † Cited by third party
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EP3247171B1 (fr) * 2015-01-13 2023-09-27 Fujitsu Limited Système de communication sans fil, station de commande et terminal
CN104661177B (zh) * 2015-03-12 2018-05-15 深圳酷派技术有限公司 一种实现d2d通信的方法、系统及设备
CN104837120B (zh) * 2015-04-02 2018-10-19 四川大学 一种集群rnti的分配方法和调度机或者核心网
CN104852794B (zh) * 2015-04-21 2019-01-15 四川大学 基于时钟实现lte终端直通的方法和终端
CN107846708B (zh) * 2016-09-19 2021-11-19 中国移动通信有限公司研究院 V2x数据传输方法及装置
CN109698738B (zh) * 2017-10-24 2022-04-29 华为技术有限公司 通信方法和通信装置
CN110169095B (zh) * 2019-04-12 2022-06-24 北京小米移动软件有限公司 加扰处理方法、解扰处理方法及装置
CN111836390B (zh) * 2019-07-19 2022-03-08 维沃移动通信有限公司 数据传输、发送方法、终端及控制节点
CN111246588B (zh) * 2020-01-10 2021-10-26 北京邮电大学 Nr系统中的解决不同优先级业务之间无序调度的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120129540A1 (en) * 2010-11-19 2012-05-24 Nokia Siemens Networks Oy Signaling mixed resource allocations for D2D communications
CN102711105A (zh) * 2012-05-18 2012-10-03 华为技术有限公司 通过移动通信网络进行通信的方法、装置及系统
CN102893685A (zh) * 2010-04-30 2013-01-23 诺基亚公司 网络控制的设备到设备/机器到机器的集群操作

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102893685A (zh) * 2010-04-30 2013-01-23 诺基亚公司 网络控制的设备到设备/机器到机器的集群操作
US20120129540A1 (en) * 2010-11-19 2012-05-24 Nokia Siemens Networks Oy Signaling mixed resource allocations for D2D communications
CN102711105A (zh) * 2012-05-18 2012-10-03 华为技术有限公司 通过移动通信网络进行通信的方法、装置及系统

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016074201A1 (fr) * 2014-11-13 2016-05-19 华为技术有限公司 Procédé et dispositif de rapport d'un rapport d'état de mémoire tampon (bsr) dans un processus d'accès aléatoire
CN105874869A (zh) * 2014-11-13 2016-08-17 华为技术有限公司 随机接入过程中bsr的上报方法和装置
CN105874869B (zh) * 2014-11-13 2019-07-12 华为技术有限公司 随机接入过程中bsr的上报方法和装置
CN109997384A (zh) * 2016-12-02 2019-07-09 诺基亚技术有限公司 用于第五代通信的接收方标识
US11309920B2 (en) 2016-12-02 2022-04-19 Nokia Technologies Oy Recipient identification for fifth generation communication
CN109997384B (zh) * 2016-12-02 2022-05-10 诺基亚技术有限公司 用于第五代通信的接收方标识

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