WO2014180426A1 - Transmission method for device-to-device discovery signal and user equipment - Google Patents

Transmission method for device-to-device discovery signal and user equipment Download PDF

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Publication number
WO2014180426A1
WO2014180426A1 PCT/CN2014/079368 CN2014079368W WO2014180426A1 WO 2014180426 A1 WO2014180426 A1 WO 2014180426A1 CN 2014079368 W CN2014079368 W CN 2014079368W WO 2014180426 A1 WO2014180426 A1 WO 2014180426A1
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WIPO (PCT)
Prior art keywords
information
discovery signal
configuration information
discovery
signal
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PCT/CN2014/079368
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French (fr)
Chinese (zh)
Inventor
梁枫
杨瑾
吴栓栓
贺海港
李运锋
毕峰
Original Assignee
中兴通讯股份有限公司
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Publication of WO2014180426A1 publication Critical patent/WO2014180426A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention belongs to the field of device-to-device (D2D) discovery signal technology, and in particular, to a D2D discovery signal transmission method.
  • D2D device-to-device
  • D2D technology is a new technology for mutual discovery and communication between two or more wireless communication terminal devices at close range. D2D technology can be applied to scenes with network coverage or no network coverage scenarios, or semi-network coverage scenarios, as shown in Figure 1.
  • D2D technology can be divided into D2D discovery technology and D2D communication technology: D2D discovery technology can support a D2D device to sense the existence of other D2D devices and identify their identity information in a close range; D2D communication technology can support close-range D2D devices.
  • D2D discovery technology can support a D2D device to sense the existence of other D2D devices and identify their identity information in a close range; D2D communication technology can support close-range D2D devices.
  • Various forms of data exchange such as voice calls or multimedia information sharing.
  • a major solution to implement LTE-based D2D discovery technology is to directly transmit and detect D2D discovery signals through D2D devices to achieve sensing and identification between D2D devices.
  • the D2D device that performs the discovery signal transmission and the D2D device that performs the discovery signal detection are likely to be asynchronous to each other due to being in different cells or clusters, which seriously affects the D2D discovery. Effects and user experience.
  • the method for solving this problem is mainly to add a synchronization signal to the D2D discovery signal, wherein the synchronization signal is dispersed in the discovery signal or located at the head of the time domain of the discovery signal.
  • the synchronization signal is dispersed in the discovery signal or located at the head of the time domain of the discovery signal.
  • some devices need to be synchronized, and some devices have been synchronized by other means, and the synchronization maintenance time also changes with the movement state of the D2D device, and the synchronization
  • the frequency domain bandwidth of the signal is also different from the frequency domain bandwidth of the discovery signal. Therefore, there is a big difference in the distribution density of the synchronization signal and the discovery signal. If the above method of binding the synchronization signal to the discovery signal is used, although It can solve the synchronization problem, but it will also reduce the wireless resource utilization and increase the power consumption of the D2D device. Summary of the invention
  • the technical problem to be solved by the embodiments of the present invention is to provide a device-to-device discovery signal transmission method and user equipment to solve the problem of low radio resource utilization in a D2D discovery scenario.
  • a device-to-device discovery signal transmission method comprising:
  • the first device sends a synchronization signal, where the synchronization signal carries configuration information of the discovery signal to be sent by the first device;
  • the first device transmits a discovery signal based on configuration information of the discovery signal.
  • the synchronization signal further carries at least one of the following information: the identifier information of the first device, the device feature information of the first device, the service type information of the first device, the first The traffic information of the device and the indication content category of the discovery signal.
  • the discovery signal when the discovery signal content category indication information indicates that the content of the discovery signal includes discovery information, the discovery signal includes at least network identity information of the first device and/or an application layer of the first device. Identity Information;
  • the discovery signal includes at least communication configuration information of the first device.
  • the discovery signal includes at least one of the following information: the identifier information of the first device, the device feature information of the first device, the service type information of the first device, and the first device The traffic information, the service content summary of the first device, the network identity information of the first device, the application layer identity information of the first device, and the communication configuration information of the first device.
  • the communication configuration information of the first device includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, identity information of the destination receiving end, group identity information of the destination receiving end group, and a service channel.
  • One or more of the configuration information includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, identity information of the destination receiving end, group identity information of the destination receiving end group, and a service channel.
  • the configuration information of the discovery signal includes one or more of the following information: resource configuration information, periodic configuration information, duration configuration information, and transmit power configuration used by the discovery signal to be sent by the first device.
  • resource configuration information includes one or more of the following information: resource configuration information, periodic configuration information, duration configuration information, and transmit power configuration used by the discovery signal to be sent by the first device.
  • Information MCS mode configuration information.
  • the step of sending, by the first device, the discovery signal based on the configuration information of the discovery signal includes:
  • the first device sends the discovery signal according to the resource indicated in the configuration information of the discovery signal, or according to the second resource pool indicated in the configuration information of the discovery signal, in the second resource
  • the discovery resource is sent by the self-selected resource in the pool; or is sent according to the MCS mode, the MCS mode set, the period, the duration, or the transmit power indicated in the configuration information of the discovery signal.
  • a device-to-device discovery signal transmission method comprising:
  • the second device detects a synchronization signal sent by the first device, where the synchronization signal carries configuration information of the discovery signal to be sent by the first device;
  • the second device determines whether to receive the discovery signal according to its own requirement and a synchronization signal.
  • the synchronization signal further carries the discovery signal content category indication information, where: the discovery signal content category indication information indicates that the content of the discovery signal includes discovery information, and the discovery signal includes at least the first device Network identity information and/or application layer identity information of the first device;
  • the discovery signal includes at least communication configuration information of the first device.
  • the discovery signal includes at least one of the following information: the identifier information of the first device, the device feature information of the first device, the service type information of the first device, and the first device The traffic information, the service content summary of the first device, the network identity information of the first device, the application layer identity information of the first device, and the communication configuration information of the first device.
  • the communication configuration information of the first device includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, identity information of the destination receiving end, group identity information of the destination receiving end group, and a service channel.
  • One or more of the configuration information includes a synchronization signal sending module and a discovery signal sending module, where:
  • the synchronization signal sending module is configured to: send a synchronization signal, where the synchronization signal carries configuration information of a discovery signal to be sent by the user equipment;
  • the discovery signal sending module is configured to: send the discovery signal based on configuration information of the discovery signal.
  • the synchronization signal further carries at least one of the following information: the identifier information of the user equipment, the device feature information of the user equipment, the service type information of the user equipment, and the service volume of the user equipment.
  • Information discovery signal content category indication information.
  • the discovery signal when the discovery signal content category indication information indicates that the content of the discovery signal includes discovery information, the discovery signal includes at least network identity information of the user equipment and/or application layer identity information of the user equipment. ;
  • the discovery signal includes at least communication configuration information of the user equipment.
  • a user equipment includes a synchronization signal detection module and a discovery signal receiving module, wherein:
  • the synchronization signal detection module is configured to: detect a synchronization signal sent by the first device, where the synchronization signal carries configuration information of a discovery signal to be sent by the first device;
  • the discovery signal receiving module is configured to: determine whether to receive the discovery signal, and if so, receive the discovery signal according to configuration information of the discovery signal.
  • the discovery signal receiving module determines whether to receive the discovery signal according to its own requirement and a synchronization signal.
  • the synchronization signal further carries at least one of the following information: the identifier information of the first device, the device feature information of the first device, the service type information of the first device, the first The traffic information of the device and the indication content category of the discovery signal.
  • the discovery signal content category indication information indicates that the content of the discovery signal includes discovery information
  • the discovery signal includes at least network identity information of the first device and/or an application layer of the first device.
  • the discovery signal includes at least communication configuration information of the first device.
  • the device-to-device discovery signal transmission method and the user equipment of the foregoing technical solution separate the synchronization signal from the discovery signal, and can efficiently realize discovery between mutually synchronized or asynchronous devices, and can improve resource utilization and reduce power consumption. Improve user experience.
  • FIG. 1 is a schematic diagram of a working scenario of a related art D2D technology
  • FIG. 2 is a schematic diagram of a device-to-device discovery signal transmission method according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of a device-to-device discovery signal transmission method according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic diagram of a method of applying the second application example of the present invention.
  • FIG. 6 is a schematic diagram of a method of applying the third application example of the present invention.
  • FIG. 7 is a schematic diagram of a method of applying the fourth application example of the present invention.
  • FIG. 8 is a schematic structural diagram of a user equipment module according to Embodiment 1 of the present invention.
  • FIG. 9 is a schematic structural diagram of a user equipment module according to Embodiment 2 of the present invention.
  • Embodiment 1 The method for transmitting the device-to-device discovery signal of the present invention is described in detail below from the perspective of the discovery signal transmitting end and the discovery signal receiving end: Embodiment 1
  • the signal transmitting end is also referred to as a first device
  • the signal receiving end is also referred to as a signal receiving end.
  • the second device as shown in FIG. 2, the method includes:
  • Step 201 The first device sends a synchronization signal, where the synchronization signal carries configuration information of a discovery signal to be sent by the first device.
  • the configuration information of the discovery signal includes at least one of the following information: resource configuration information, periodic configuration information, duration configuration information, transmit power configuration information, and MCS mode configuration information used by the discovery signal to be sent by the first device.
  • the synchronization signal further carries at least one of the following information: identifier information of the first device, device feature information of the first device, service type information of the first device, traffic volume information of the first device, and discovery signal content category indication information Therefore, the discovery signal receiving end can distinguish the source of the synchronization signal according to the information carried by the synchronization signal, and serve as a basis for filtering the discovery signal.
  • the information carried by the synchronization signal can be carried by explicit and/or implicitly by the resources and/or synchronization signal generation parameters used by the synchronization signal.
  • the identifier information of the first device includes a long-term identity identifier or a temporary identity identifier used to represent the first device;
  • the device feature information of the first device includes a function, a permission, or a device for authenticating the first device. status information.
  • the discovery signal content category indication information is used to indicate the category of the content of the discovery signal, such as indicating that the content of the discovery signal includes discovery information and/or communication configuration information.
  • the first device generates a synchronization signal according to a synchronization signal generation parameter or a synchronization signal generation parameter set configured by the control node or pre-configured.
  • the first device sends a synchronization signal according to the resource configured or pre-configured by the control node, or sends a synchronization signal in the resource pool according to the resource pool configured or pre-configured by the control node; or according to the control node
  • the configured or pre-configured period, duration, and transmit power transmit synchronization signals.
  • control node is a macro base station, or a micro base station or a relay station, or a Group Owner, or a Cluster Header.
  • the common and/or dedicated configuration on which the synchronization signal and/or the discovery signal are transmitted is configured by the control node, the public configuration information is carried in the system broadcast message, and the dedicated configuration information is carried in the RRC message and/or the physical layer. In the control channel.
  • Step 202 The first device sends a discovery signal based on the configuration information of the discovery signal.
  • the discovery signal includes at least network identity information of the first device and/or application layer identity information of the first device;
  • the discovery signal includes at least first device communication configuration information.
  • the discovery signal includes at least one of the following information: the identification information of the first device, the device feature information of the first device, the service type information of the first device, the traffic information of the first device, and the service content summary of the first device.
  • the network identity information of the first device includes identity information that uniquely identifies the device in the network; the application layer identity information of the first device includes identity information that uniquely identifies the device or a user to which the device belongs in the application.
  • the first device communication configuration information includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, identity information of the destination receiving end, group identity information of the destination receiving end group, and a service channel.
  • One or more of configuration information including resource configuration information, periodic configuration information, duration, transmit power configuration information, or MCS mode configuration information).
  • the first device sends the discovery signal according to the resource indicated in the configuration information of the discovery signal carried in the synchronization signal, or according to the indication indicated in the configuration information of the discovery signal carried in the synchronization signal.
  • a second resource pool wherein the discovery resource is sent by the optional resource in the second resource pool; or the MCS mode, the MCS mode set, the period, and the duration indicated in the configuration information of the discovery signal carried in the synchronization signal Or transmit power for transmission.
  • the information carried in the synchronization signal must be a subset of the information of the control node configuration or pre-configuration.
  • the method for transmitting a device-to-device discovery signal according to the second embodiment of the present invention is described in the embodiment of the present invention.
  • the discovery signal sending end is the first device
  • the signal receiving end is the second.
  • the device as shown in Figure 3, includes:
  • Step 301 The second device detects a synchronization signal sent by the first device, where the synchronization signal carries configuration information of the discovery signal to be sent by the first device.
  • the second device detects the synchronization signal according to the resource configured by the control node or the pre-configured resource, or blindly detects the synchronization signal in the resource pool according to the resource pool configured or pre-configured by the control node; or configured according to the control node Or a pre-configured period, duration, transmit power, and synchronization signal generation parameter detection synchronization signal.
  • the synchronization signal further carries discovery signal content category indication information.
  • Step 302 When it is determined that the discovery signal is received, the second device receives the discovery signal according to the configuration information of the discovery signal.
  • the second device determines whether to receive the discovery signal according to its own requirement and a synchronization signal.
  • the second device when the discovery signal content category indication information indicates that the discovery signal content includes discovery information, and the second device itself needs to perform discovery, the second device receives the discovery signal; otherwise, the discovery is not received. signal.
  • the second device when the discovery signal content category indication information indicates that the discovery signal content includes communication configuration information, and the second device's own requirement includes performing communication, the second device receives the discovery signal; otherwise, the discovery signal is not received. .
  • the second device When the second device detects the synchronization signal and the identification information of the first device carried therein and/or the device feature information of the first device and/or the first service feature information of the first device, the second device The receiving of the discovery signal is determined according to its own needs, or the discovery signal is not received.
  • the discovery signal includes at least network identity information of the first device and/or application layer identity information of the first device;
  • the discovery signal content category indication information indicates that the discovery signal content includes a communication configuration letter
  • the discovery signal includes at least first device communication configuration information.
  • the discovery signal includes at least one of the following information: the identification information of the first device, the device feature information of the first device, the service type information of the first device, the traffic information of the first device, and the service content summary of the first device.
  • the first device communication configuration information includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, identity information of the destination receiving end, group identity information of the destination receiving end group, and configuration information of the traffic channel. one or more.
  • the device to device discovery signal transmission method separates the synchronization signal from the discovery signal, and can efficiently implement discovery between devices that are synchronized or asynchronous, and can improve resource utilization, reduce power consumption, and improve user experience. .
  • UE1 and UE2 are located within the coverage of the base station.
  • the base station performs a common configuration of the synchronization signal and the discovery signal through the system broadcast message, and specifically includes that the radio resource pool configuring the synchronization signal is the last symbol of the subframe 1 and the subframe 5 of each radio frame, and the period is 10 ms.
  • the duration is 1000ms, and the transmit power is 20dBm.
  • the generation parameters of the synchronization signal are configured to use the same parameter configuration as the PRACH of the cell, including generating a root sequence index, a cyclic shift index, a sequence grouping rule, and a wireless discovery signal.
  • the resource pool is an RB except for the resources occupied by the PUCCH on the subframe 2 of each even radio frame, with a period of 20 ms and a duration of 50 transmission periods.
  • the MCS mode is a modulation and coding scheme when the MCS is 4 in the LTE rule.
  • the UE1 selects a resource in the radio resource pool to perform periodic transmission of the synchronization signal according to the common configuration of the synchronization signal from the base station, and the synchronization signal includes the identification information ID1 of the UE1, the discovery signal content category indication information, and the configuration information of the discovery signal.
  • the configuration information of the discovery signal includes a time-frequency resource location used by the discovery signal to be sent by the UE1, and the discovery signal content category indication information indicates that the content of the signaling signal includes the discovery information.
  • the UE1 also selects a resource to perform periodic transmission of the discovery signal according to the common configuration of the discovery signal from the base station, where the discovery signal includes the application layer identity information of the UE1, that is, the MSN user name.
  • the UE2 performs blind detection in the radio resource pool according to the common configuration of the synchronization signal from the base station, detects the synchronization signal from the UE1, and acquires the identification information of the UE1, the discovery signal content category indication information, and the configuration information of the discovery signal, according to the discovery.
  • the signal content category indication information indicates that the discovery signal content includes the discovery information determining to receive the corresponding discovery signal.
  • the UE2 synchronizes with the synchronization signal from the UE1, and receives the discovery signal according to the time-frequency resource location used by the discovery signal indicated by the discovery signal configuration information in the synchronization signal, when the UE2 recognizes the discovery signal.
  • the application layer identity of UE1 is the MSN username, and UE2 completes the discovery of UE1.
  • UE1 and UE2 are located within the coverage of the base station.
  • the UE 1 performs transmission of the synchronization signal and the discovery signal according to the common configuration and the dedicated configuration of the synchronization signal and the discovery signal configured by the base station.
  • the synchronization signal carries the identification information ID1 of the UE1, the service type information provided by the UE1, the traffic information, the discovery signal content category indication information, and the configuration information of the discovery signal, where the service type information is an advertisement type and a traffic quantity information.
  • the configuration information of the discovery signal includes the time-frequency resource location used by the discovery signal to be transmitted by the UE1,
  • the sending period, the discovery signal content category indication information indicates that the discovery signal content includes communication configuration information;
  • the discovery signal carries the identification information ID1 of the UE1, the service content summary provided by the UE1, and the communication configuration information of the UE1, where the service content provided by the UE1 is indicated.
  • the summary is the restaurant discount information, and the communication configuration information of the UE1 includes resource configuration information in the form of a broadcast and a provided service channel.
  • the UE2 performs blind detection and reception of the discovery signal according to the common configuration of the discovery signal configured by the base station, and uses the downlink timing and frequency of the base station as a reference, and receives the discovery signal from the UE1, and acquires the identification information ID1 of the UE1, and provides the identifier information.
  • the service type and the traffic information where the information indicates that the service type provided by the UE1 is an advertisement class, and the communication configuration information of the UE1, wherein the service content summary is provided as the restaurant discount information, and the transmission form is broadcast, and includes Resource configuration information of the traffic channel provided by UE1.
  • the UE 2 determines, based on the synchronization signal from the UE 1 and the communication configuration information in the discovery signal, that the service provided by the UE 1 is of interest to itself, and receives the broadcast service transmission from the UE 2 in accordance with its communication configuration information.
  • UE1 and UE2 are located at a location without a cellular network, UE1 belongs to a cluster and within the coverage of the cluster header (CH), UE2 is outside the CH coverage.
  • CH cluster header
  • the CH performs a common configuration of the synchronization signal by using a broadcast mode
  • the radio resource pool including the synchronization signal is an RB except for the resources occupied by the PUCCH on the subframe 5 of each radio frame, and the period is 10 ms
  • the radio resource pool of the discovery signal is the RB of the subframe 2 of each radio frame except for the resources occupied by the PUCCH, and the period is 10 ms.
  • the UE1 performs the synchronization signal transmission according to the common configuration of the synchronization signal configured by the CH, where the synchronization signal carries the identification information ID1 of the UE1, the device characteristic information of the UE1, the discovery signal content category indication information, and the configuration information of the discovery signal, where the UE1
  • the device feature information indicates that the UE1 is a firefighter device
  • the configuration information of the discovery signal includes the time-frequency resource location and period used by the discovery signal to be sent by the UE1
  • the discovery signal content category indication information indicates that the discovery signal content includes the Letter configuration information.
  • the UE1 calculates the common configuration of the synchronization signal according to the common configuration of the synchronization signal configured by the CH, and the mapping between the synchronization signal configuration and the discovery signal configuration, and the public resource pool includes the radio resource pool for removing the resources occupied by the PUCCH for the subframe 2 of each radio frame.
  • the UE1 performs the transmission of the discovery signal according to the common configuration of the discovery signal, where the discovery signal carries the application layer identity information of the UE1, the service type information of the UE1, and the communication configuration information, where the service type provided by the UE1 is a fire report.
  • the communication configuration information includes resource configuration information in the form of a broadcast, a provided traffic channel.
  • the UE2 performs blind detection of the synchronization signal according to the common configuration of the synchronization signal pre-configured by the manufacturer, acquires the synchronization signal from the UE1, and includes the identification information of the UE1, and the device feature information of the UE1 indicates that the UE1 is a firefighter device, and the UE1 is to be sent.
  • the time-frequency resource location used by the discovery signal, and the discovery signal content category indication information are indicated as communication configuration information.
  • the UE2 judges that the discovery signal of the UE1 is interested by itself according to the device type and the discovery signal class indication information of the UE1, and uses the synchronization signal from the UE1 as a reference of time and frequency, and performs discovery signal according to the discovery signal configuration information from the UE1.
  • the UE 2 determines, based on the communication configuration information from the UE 1, that the message provided by the UE 1 is of interest to itself, and receives the broadcast service transmission from the UE 2 in accordance with its communication configuration information.
  • UE1 and UE2 are located in a location without a cellular network and are not covered by any of the cluster headers.
  • the manufacturer of UE1 and UE2 has completed the common configuration of the synchronization signal and the discovery signal by pre-configuration, and specifically includes the radio resource pool of the synchronization signal for removing PUCCH for subframes 1 and 5 of each radio frame.
  • the UE1 performs the synchronization signal transmission according to the pre-configured synchronization signal common configuration, where the synchronization signal carries the identification information ID1 of the UE1, and the service characteristic information of the UE1 and the discovery signal content category indication information indicate that the service provided by the UE1 is a fire situation.
  • the configuration information of the discovery signal where the service characteristic information of the UE1 indicates that the service provided by the UE1 is a fire report, and the configuration information of the discovery signal includes a time-frequency resource location used by the discovery signal to be sent by the UE1, and a discovery signal.
  • the content category indication information indicates that the discovery signal content includes communication configuration information.
  • the UE1 performs the sending of the discovery signal according to the common configuration of the pre-configured discovery signal, where the discovery signal carries the network identity information ID1X of the UE1, and the communication configuration information of the UE1, wherein the indication transmission form is multicast, and the destination receiving end group
  • the group identity information is the first fire brigade, and also includes resource configuration information of the provided traffic channel.
  • the UE2 performs blind detection of the synchronization signal according to the common configuration of the synchronization signal pre-configured by the manufacturer, acquires the synchronization signal from the UE1, and includes the identification information ID1 of the UE1, and the service type provided by the UE1 is a fire report, and the UE1 is to send
  • the time-frequency resource location used by the discovery signal, and the discovery signal content include communication configuration information.
  • the UE2 determines that the discovery signal of the UE1 is interested by itself according to the device type and the discovery signal class indication information of the UE1, and receives the discovery signal according to the discovery signal configuration information from the UE1, and acquires the network identity information ID1X of the UE1, and the UE1.
  • the communication configuration information indicates that the transmission form of the service provided by the UE1 is multicast, and the service transmission destination end is the first fire department, and the resource configuration information of the service channel provided by the UE1.
  • the UE2 determines, according to the communication configuration information from the UE1, that the message provided by the UE1 is of interest to the UE, and that the UE2 belongs to the first fire brigade, and at this time, the UE2 receives the multicast service transmission from the UE2 according to its communication configuration information.
  • the embodiment of the present invention further provides a user equipment.
  • the user equipment includes:
  • the synchronization signal sending module 801 is configured to: send a synchronization signal, where the synchronization signal carries Configuration information of the discovery signal to be sent by the first device;
  • the discovery signal transmitting module 802 is configured to: transmit a discovery signal based on the configuration information of the discovery signal.
  • the configuration information of the discovery signal includes one or more of the following information: resource configuration information, periodic configuration information, duration configuration information, and transmit power configuration used by the discovery signal to be sent by the first device. Information, MCS mode configuration information.
  • the discovery signal sending module 802 is configured to send the discovery signal based on the configuration information of the discovery signal as follows:
  • the first device sends the discovery signal according to the resource indicated in the configuration information of the discovery signal, or according to the second resource pool indicated in the configuration information of the discovery signal, in the second resource
  • the discovery resource is sent by the self-selected resource in the pool; or is sent according to the MCS mode, the MCS mode set, the period, the duration, or the transmit power indicated in the configuration information of the discovery signal.
  • the synchronization signal further carries at least one of the following information: identifier information of the first device, device feature information of the first device, service type information of the first device, traffic volume information of the first device, and discovery signal content category indication information .
  • the discovery signal includes at least network identity information of the first device and/or application layer identity information of the first device;
  • the discovery signal includes at least first device communication configuration information.
  • the embodiment of the present invention further provides a user equipment, as shown in FIG. 9, the user equipment includes:
  • the synchronization signal detection module 901 is configured to: detect a synchronization signal sent by the first device, where the synchronization signal carries configuration information of the discovery signal to be sent by the first device;
  • the discovery signal receiving module 902 is configured to: determine whether to receive the discovery signal, and if so, receive the discovery signal according to the configuration information of the discovery signal.
  • the second device determines whether to receive the discovery signal according to its own requirement and a synchronization signal.
  • the synchronization signal further carries at least one of the following information: identifier information of the first device, device feature information of the first device, service type information of the first device, traffic information of the first device, and a discovery signal.
  • Content category indication information identifier information of the first device, device feature information of the first device, service type information of the first device, traffic information of the first device, and a discovery signal.
  • the discovery signal when the discovery signal content category indication information indicates that the discovery signal content includes the discovery information, the discovery signal includes at least network identity information of the first device and/or application layer identity information of the first device;
  • the discovery signal includes at least first device communication configuration information.
  • the device-to-device discovery signal transmission method and the user equipment in the embodiment of the present invention separate the synchronization signal from the discovery signal, and can efficiently realize discovery between mutually synchronized or asynchronous devices, and can improve resources. Utilization, reduce power consumption, and enhance user experience.
  • the device-to-device discovery signal transmission method and the user equipment of the foregoing technical solution separate the synchronization signal from the discovery signal, and can efficiently realize discovery between mutually synchronized or asynchronous devices, and can improve resource utilization and reduce power consumption. Improve user experience. Therefore, the present invention has strong industrial applicability.

Abstract

A transmission method for a device-to-device discovery signal and a user equipment. The method comprises: a first device sending a synchronization signal, wherein the synchronization signal carries configuration information about a discovery signal to be sent by the first device; and the first device sending the discovery signal based on the configuration information about the discovery signal. A transmission method for a device-to-device discovery signal and a user equipment separate a synchronization signal from the discovery signal, thereby being able to improve the resource utilization rate as well as reducing the power consumption.

Description

设备到设备发现信号的传输方法和用户设备  Device to device discovery signal transmission method and user equipment
技术领域 Technical field
本发明属于设备到设备（D2D, Device-to-Device )发现信号技术领域， 尤其涉及到一种 D2D发现信号的传输方法。  The present invention belongs to the field of device-to-device (D2D) discovery signal technology, and in particular, to a D2D discovery signal transmission method.
背景技术 Background technique
D2D技术是一种用于近距离的两个或多个无线通信终端设备间进行相互 发现、 通信的新型技术。 D2D技术可以应用于有网络覆盖的场景或无网络覆 盖场景， 或者半网络覆盖场景中， 如图 1所示。  D2D technology is a new technology for mutual discovery and communication between two or more wireless communication terminal devices at close range. D2D technology can be applied to scenes with network coverage or no network coverage scenarios, or semi-network coverage scenarios, as shown in Figure 1.
D2D技术又可分为 D2D发现技术和 D2D通信技术： D2D发现技术可以 支持一个 D2D设备在近距离范围内感知其他 D2D设备的存在并识别其身份 信息； D2D通信技术可以支持近距离的 D2D设备之间进行语音通话或多媒 体信息共享等多种形式的数据交换。  D2D technology can be divided into D2D discovery technology and D2D communication technology: D2D discovery technology can support a D2D device to sense the existence of other D2D devices and identify their identity information in a close range; D2D communication technology can support close-range D2D devices. Various forms of data exchange, such as voice calls or multimedia information sharing.
实现基于 LTE的 D2D发现技术的一个主要解决方案是通过 D2D设备本 身直接发送和检测 D2D发现信号， 来实现 D2D设备之间的感知和识别。 而 这种方案中， 进行发现信号发射的 D2D设备与进行发现信号检测的 D2D设 备之间很可能由于处于不同的小区或者簇（cluster )之中等原因是相互异步 的， 这会严重影响 D2D发现的效果和用户感受。  A major solution to implement LTE-based D2D discovery technology is to directly transmit and detect D2D discovery signals through D2D devices to achieve sensing and identification between D2D devices. In this solution, the D2D device that performs the discovery signal transmission and the D2D device that performs the discovery signal detection are likely to be asynchronous to each other due to being in different cells or clusters, which seriously affects the D2D discovery. Effects and user experience.
而目前解决这一问题的方法主要是在 D2D发现信号中加入同步信号， 其中同步信号分散在发现信号中或者位于发现信号时域的头部。 但是由于 D2D设备的分布状况比较复杂， 有的设备之间需要同步， 而有的设备之间已 经通过其他方式实现了同步， 并且同步维持的时间也随着 D2D设备的移动状 态发生变化， 而且同步信号的频域带宽与发现信号的频域带宽差别也较大， 因此， 同步信号与发现信号的分布密度存在较大差异， 如果釆用上述将同步 信号与发现信号绑定在一起的方法， 虽然可以解决同步问题， 但也会降低无 线资源利用率并增加 D2D设备的功耗。 发明内容 At present, the method for solving this problem is mainly to add a synchronization signal to the D2D discovery signal, wherein the synchronization signal is dispersed in the discovery signal or located at the head of the time domain of the discovery signal. However, due to the complicated distribution of D2D devices, some devices need to be synchronized, and some devices have been synchronized by other means, and the synchronization maintenance time also changes with the movement state of the D2D device, and the synchronization The frequency domain bandwidth of the signal is also different from the frequency domain bandwidth of the discovery signal. Therefore, there is a big difference in the distribution density of the synchronization signal and the discovery signal. If the above method of binding the synchronization signal to the discovery signal is used, although It can solve the synchronization problem, but it will also reduce the wireless resource utilization and increase the power consumption of the D2D device. Summary of the invention
本发明实施例要解决的技术问题是提供一种设备到设备发现信号的传输 方法和用户设备， 以解决 D2D发现场景中无线资源利用率低的问题。  The technical problem to be solved by the embodiments of the present invention is to provide a device-to-device discovery signal transmission method and user equipment to solve the problem of low radio resource utilization in a D2D discovery scenario.
为解决上述技术问题， 釆用如下技术方案：  In order to solve the above technical problems, the following technical solutions are used:
一种设备到设备发现信号的传输方法， 该方法包括：  A device-to-device discovery signal transmission method, the method comprising:
第一设备发送同步信号， 其中， 所述同步信号携带所述第一设备要发送 的发现信号的配置信息；  The first device sends a synchronization signal, where the synchronization signal carries configuration information of the discovery signal to be sent by the first device;
所述第一设备基于所述发现信号的配置信息发送发现信号。  The first device transmits a discovery signal based on configuration information of the discovery signal.
可选地， 所述同步信号还携带以下信息中的至少一个： 所述第一设备的 标识信息、 所述第一设备的设备特征信息、 所述第一设备的业务类型信息、 所述第一设备的业务量信息、 发现信号内容类别指示信息。  Optionally, the synchronization signal further carries at least one of the following information: the identifier information of the first device, the device feature information of the first device, the service type information of the first device, the first The traffic information of the device and the indication content category of the discovery signal.
可选地， 所述发现信号内容类别指示信息指示所述发现信号的内容包括 发现信息时 , 所述发现信号至少包括所述第一设备的网络身份信息和 /或所 述第一设备的应用层身份信息；  Optionally, when the discovery signal content category indication information indicates that the content of the discovery signal includes discovery information, the discovery signal includes at least network identity information of the first device and/or an application layer of the first device. Identity Information;
所述发现信号内容类别指示信息指示所述发现信号的内容包括通信配置 信息时， 所述发现信号至少包括所述第一设备的通信配置信息。  And when the discovery signal content category indication information indicates that the content of the discovery signal includes communication configuration information, the discovery signal includes at least communication configuration information of the first device.
可选地， 所述发现信号包括以下信息中的至少一个： 所述第一设备的标 识信息、 所述第一设备的设备特征信息、 所述第一设备的业务类型信息、 所 述第一设备的业务量信息、 所述第一设备的业务内容摘要、 所述第一设备的 网络身份信息、 所述第一设备的应用层身份信息、 所述第一设备的通信配置 信息。  Optionally, the discovery signal includes at least one of the following information: the identifier information of the first device, the device feature information of the first device, the service type information of the first device, and the first device The traffic information, the service content summary of the first device, the network identity information of the first device, the application layer identity information of the first device, and the communication configuration information of the first device.
可选地， 所述第一设备的通信配置信息包括广播标识信息， 组播标识信 息， 单播标识信息， 中继标识信息、 目的接收端的身份信息、 目的接收端组 的组身份信息、 业务信道的配置信息中的一个或多个。  Optionally, the communication configuration information of the first device includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, identity information of the destination receiving end, group identity information of the destination receiving end group, and a service channel. One or more of the configuration information.
可选地， 所述发现信号的配置信息包括以下信息中的一个或多个： 所述 第一设备所要发送的发现信号所使用的资源配置信息、 周期配置信息、 持续 时间配置信息、 发射功率配置信息、 MCS方式配置信息。  Optionally, the configuration information of the discovery signal includes one or more of the following information: resource configuration information, periodic configuration information, duration configuration information, and transmit power configuration used by the discovery signal to be sent by the first device. Information, MCS mode configuration information.
可选地， 所述第一设备基于所述发现信号的配置信息发送发现信号的步 骤包括： Optionally, the step of sending, by the first device, the discovery signal based on the configuration information of the discovery signal The steps include:
所述第一设备按照所的发现信号的配置信息中所指示的资源进行发送所 述发现信号， 或者， 按照所述发现信号的配置信息中所指示的第二资源池， 在所述第二资源池中自选资源发送所述发现信号； 或者按照所述发现信号的 配置信息中所指示的 MCS方式、 MCS方式集合、 周期、 持续时间或发射功 率进行发送。  The first device sends the discovery signal according to the resource indicated in the configuration information of the discovery signal, or according to the second resource pool indicated in the configuration information of the discovery signal, in the second resource The discovery resource is sent by the self-selected resource in the pool; or is sent according to the MCS mode, the MCS mode set, the period, the duration, or the transmit power indicated in the configuration information of the discovery signal.
一种设备到设备发现信号的传输方法， 该方法包括： A device-to-device discovery signal transmission method, the method comprising:
第二设备检测第一设备发送的同步信号， 所述同步信号携带所述第一设 备要发送的发现信号的配置信息；  The second device detects a synchronization signal sent by the first device, where the synchronization signal carries configuration information of the discovery signal to be sent by the first device;
所述第二设备确定是否接收所述发现信号， 若是， 则所述第二设备根据 所述发现信号的配置信息接收所述发现信号。  Determining, by the second device, whether the discovery signal is received, and if so, the second device receiving the discovery signal according to the configuration information of the discovery signal.
可选地， 所述第二设备根据自身的需求及同步信号确定是否接收所述发 现信号。  Optionally, the second device determines whether to receive the discovery signal according to its own requirement and a synchronization signal.
可选地， 所述同步信号还携带发现信号内容类别指示信息； 其中： 所述发现信号内容类别指示信息指示所述发现信号的内容包括发现信息 时， 所述发现信号至少包括所述第一设备的网络身份信息和 /或所述第一设 备的应用层身份信息；  Optionally, the synchronization signal further carries the discovery signal content category indication information, where: the discovery signal content category indication information indicates that the content of the discovery signal includes discovery information, and the discovery signal includes at least the first device Network identity information and/or application layer identity information of the first device;
所述发现信号内容类别指示信息指示所述发现信号的内容包括通信配置 信息时， 所述发现信号至少包括所述第一设备的通信配置信息。  And when the discovery signal content category indication information indicates that the content of the discovery signal includes communication configuration information, the discovery signal includes at least communication configuration information of the first device.
可选地， 所述发现信号包括以下信息中的至少一个： 所述第一设备的标 识信息、 所述第一设备的设备特征信息、 所述第一设备的业务类型信息、 所 述第一设备的业务量信息、 所述第一设备的业务内容摘要、 所述第一设备的 网络身份信息、 所述第一设备的应用层身份信息、 所述第一设备的通信配置 信息。  Optionally, the discovery signal includes at least one of the following information: the identifier information of the first device, the device feature information of the first device, the service type information of the first device, and the first device The traffic information, the service content summary of the first device, the network identity information of the first device, the application layer identity information of the first device, and the communication configuration information of the first device.
可选地， 所述第一设备的通信配置信息包括广播标识信息， 组播标识信 息， 单播标识信息， 中继标识信息、 目的接收端的身份信息、 目的接收端组 的组身份信息、 业务信道的配置信息中的一个或多个。 一种用户设备， 该用户设备包括同步信号发送模块和发现信号发送模 块， 其中： Optionally, the communication configuration information of the first device includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, identity information of the destination receiving end, group identity information of the destination receiving end group, and a service channel. One or more of the configuration information. A user equipment, where the user equipment includes a synchronization signal sending module and a discovery signal sending module, where:
所述同步信号发送模块设置成： 发送同步信号， 其中所述同步信号携带 所述用户设备要发送的发现信号的配置信息；  The synchronization signal sending module is configured to: send a synchronization signal, where the synchronization signal carries configuration information of a discovery signal to be sent by the user equipment;
所述发现信号发送模块设置成： 基于所述发现信号的配置信息发送所述 发现信号。  The discovery signal sending module is configured to: send the discovery signal based on configuration information of the discovery signal.
可选地， 所述同步信号还携带以下信息中的至少一个： 所述用户设备的 标识信息、 所述用户设备的设备特征信息、 所述用户设备的业务类型信息、 所述用户设备的业务量信息、 发现信号内容类别指示信息。  Optionally, the synchronization signal further carries at least one of the following information: the identifier information of the user equipment, the device feature information of the user equipment, the service type information of the user equipment, and the service volume of the user equipment. Information, discovery signal content category indication information.
可选地， 所述发现信号内容类别指示信息指示所述发现信号的内容包括 发现信息时 , 所述发现信号至少包括所述用户设备的网络身份信息和 /或所 述用户设备的应用层身份信息；  Optionally, when the discovery signal content category indication information indicates that the content of the discovery signal includes discovery information, the discovery signal includes at least network identity information of the user equipment and/or application layer identity information of the user equipment. ;
所述发现信号内容类别指示信息指示所述发现信号的内容包括通信配置 信息时， 所述发现信号至少包括所述用户设备的通信配置信息。  When the discovery signal content category indication information indicates that the content of the discovery signal includes communication configuration information, the discovery signal includes at least communication configuration information of the user equipment.
一种用户设备， 该用户设备包括同步信号检测模块和发现信号接收模 块， 其中： A user equipment includes a synchronization signal detection module and a discovery signal receiving module, wherein:
所述同步信号检测模块设置成： 检测第一设备发送的同步信号， 所述同 步信号携带所述第一设备要发送的发现信号的配置信息；  The synchronization signal detection module is configured to: detect a synchronization signal sent by the first device, where the synchronization signal carries configuration information of a discovery signal to be sent by the first device;
所述发现信号接收模块设置成： 确定是否接收所述发现信号， 若是， 根 据所述发现信号的配置信息接收所述发现信号。  The discovery signal receiving module is configured to: determine whether to receive the discovery signal, and if so, receive the discovery signal according to configuration information of the discovery signal.
可选地， 所述发现信号接收模块根据自身的需求及同步信号确定是否接 收所述发现信号。  Optionally, the discovery signal receiving module determines whether to receive the discovery signal according to its own requirement and a synchronization signal.
可选地， 所述同步信号还携带以下信息中的至少一个： 所述第一设备的 标识信息、 所述第一设备的设备特征信息、 所述第一设备的业务类型信息、 所述第一设备的业务量信息、 发现信号内容类别指示信息。 可选地， 所述发现信号内容类别指示信息指示所述发现信号的内容包括 发现信息时 , 所述发现信号至少包括所述第一设备的网络身份信息和 /或所 述第一设备的应用层身份信息； Optionally, the synchronization signal further carries at least one of the following information: the identifier information of the first device, the device feature information of the first device, the service type information of the first device, the first The traffic information of the device and the indication content category of the discovery signal. Optionally, when the discovery signal content category indication information indicates that the content of the discovery signal includes discovery information, the discovery signal includes at least network identity information of the first device and/or an application layer of the first device. Identity Information;
所述发现信号内容类别指示信息指示所述发现信号内容包括通信配置信 息时， 所述发现信号至少包括所述第一设备的通信配置信息。  And when the discovery signal content category indication information indicates that the discovery signal content includes communication configuration information, the discovery signal includes at least communication configuration information of the first device.
上述技术方案的设备到设备发现信号的传输方法及用户设备， 将同步信 号与发现信号分离， 可以高效的在相互同步或异步的设备之间实现发现， 并 且可以提高资源利用率， 降低功耗， 提升用户感受。 附图概述  The device-to-device discovery signal transmission method and the user equipment of the foregoing technical solution separate the synchronization signal from the discovery signal, and can efficiently realize discovery between mutually synchronized or asynchronous devices, and can improve resource utilization and reduce power consumption. Improve user experience. BRIEF abstract
图 1为相关技术的 D2D技术的工作场景示意图；  FIG. 1 is a schematic diagram of a working scenario of a related art D2D technology;
图 2为本发明实施例一的设备到设备发现信号的传输方法示意图； 图 3为本发明实施例二的设备到设备发现信号的传输方法示意图； 图 4为应用本发明应用实例一的方法的示意图；  2 is a schematic diagram of a device-to-device discovery signal transmission method according to Embodiment 1 of the present invention; FIG. 3 is a schematic diagram of a device-to-device discovery signal transmission method according to Embodiment 2 of the present invention; Schematic diagram
图 5为应用本发明应用实例二的方法的示意图；  5 is a schematic diagram of a method of applying the second application example of the present invention;
图 6为应用本发明应用实例三的方法的示意图；  6 is a schematic diagram of a method of applying the third application example of the present invention;
图 7为应用本发明应用实例四的方法的示意图；  7 is a schematic diagram of a method of applying the fourth application example of the present invention;
图 8为本发明实施例一的用户设备模块结构示意图；  8 is a schematic structural diagram of a user equipment module according to Embodiment 1 of the present invention;
图 9为本发明实施例二的用户设备模块结构示意图。  FIG. 9 is a schematic structural diagram of a user equipment module according to Embodiment 2 of the present invention.
本发明的较佳实施方式 Preferred embodiment of the invention
下面结合附图和具体实施例对本发明所述技术方案作进一步的详细描 述， 以使本领域的技术人员可以更好的理解本发明并能予以实施， 但所举实 施例不作为对本发明的限定。 需要说明的是， 在不冲突的情况下， 本发明中 的实施例及实施例中的特征可以相互组合。  The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and specific embodiments to enable those skilled in the art to understand the invention. . It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
以下分别从发现信号发送端和发现信号接收端的角度对本发明设备到设 备发现信号的传输方法进行详细说明： 实施例一 The method for transmitting the device-to-device discovery signal of the present invention is described in detail below from the perspective of the discovery signal transmitting end and the discovery signal receiving end: Embodiment 1
本发明实施例一的设备到设备发现信号的传输方法， 该实施例从发现信 号发送端进行描述， 本发明实施例中， 发现信号发送端也称为第一设备， 发 现信号接收端也称为第二设备， 如图 2所示， 该方法包括：  The method for transmitting a device-to-device discovery signal according to the first embodiment of the present invention is described in the embodiment of the present invention. In the embodiment of the present invention, the signal transmitting end is also referred to as a first device, and the signal receiving end is also referred to as a signal receiving end. The second device, as shown in FIG. 2, the method includes:
步骤 201 : 第一设备发送同步信号， 其中所述同步信号携带所述第一设 备要发送的发现信号的配置信息；  Step 201: The first device sends a synchronization signal, where the synchronization signal carries configuration information of a discovery signal to be sent by the first device.
所述发现信号的配置信息至少包括以下信息中的一个： 第一设备所要发 送的发现信号所使用的资源配置信息、 周期配置信息、 持续时间配置信息、 发射功率配置信息、 MCS方式配置信息。  The configuration information of the discovery signal includes at least one of the following information: resource configuration information, periodic configuration information, duration configuration information, transmit power configuration information, and MCS mode configuration information used by the discovery signal to be sent by the first device.
所述同步信号还携带以下信息中的至少一个： 第一设备的标识信息、 第 一设备的设备特征信息、 第一设备的业务类型信息、 第一设备的业务量信息、 发现信号内容类别指示信息， 从而可使得发现信号接收端可根据同步信号携 带的信息区分同步信号的来源， 作为发现信号过滤的依据。 同步信号所携带 的信息可由所述同步信号所使用的资源和 /或同步信号生成参数通过显式和 / 或隐式的携带。  The synchronization signal further carries at least one of the following information: identifier information of the first device, device feature information of the first device, service type information of the first device, traffic volume information of the first device, and discovery signal content category indication information Therefore, the discovery signal receiving end can distinguish the source of the synchronization signal according to the information carried by the synchronization signal, and serve as a basis for filtering the discovery signal. The information carried by the synchronization signal can be carried by explicit and/or implicitly by the resources and/or synchronization signal generation parameters used by the synchronization signal.
可选地， 所述第一设备的标识信息包括用于表征第一设备的长期身份标 识或临时身份标识； 所述第一设备的设备特征信息包括用于表征第一设备的 功能、 权限或设备状态信息。  Optionally, the identifier information of the first device includes a long-term identity identifier or a temporary identity identifier used to represent the first device; the device feature information of the first device includes a function, a permission, or a device for authenticating the first device. status information.
可理解地，发现信号内容类别指示信息用于指示发现信号的内容的类别， 比如指示发现信号的内容包括发现信息和 /或通信配置信息。  Intelligible, the discovery signal content category indication information is used to indicate the category of the content of the discovery signal, such as indicating that the content of the discovery signal includes discovery information and/or communication configuration information.
第一设备按照控制节点配置的或者预配置的同步信号生成参数或同步信 号生成参数集合生成同步信号。  The first device generates a synchronization signal according to a synchronization signal generation parameter or a synchronization signal generation parameter set configured by the control node or pre-configured.
所述第一设备按照控制节点配置的或者预配置的资源进行发送同步信 号， 或者， 按照控制节点配置的或预配置的资源池， 在所述资源池中自选资 源发送同步信号； 或者按照控制节点配置的或者预配置的周期、 持续时间、 发射功率发送同步信号。  The first device sends a synchronization signal according to the resource configured or pre-configured by the control node, or sends a synchronization signal in the resource pool according to the resource pool configured or pre-configured by the control node; or according to the control node The configured or pre-configured period, duration, and transmit power transmit synchronization signals.
本发明实施例中所述控制节点为宏基站，或微基站或中继站，或者 Group Owner, 或 Cluster Header。 所述同步信号和 /或发现信号的传输所依据的公共和 /或专用配置，由控制 节点进行配置时， 公共配置信息承载在系统广播消息中， 专用配置信息承载 在 RRC消息和 /或物理层控制信道中。 In the embodiment of the present invention, the control node is a macro base station, or a micro base station or a relay station, or a Group Owner, or a Cluster Header. The common and/or dedicated configuration on which the synchronization signal and/or the discovery signal are transmitted is configured by the control node, the public configuration information is carried in the system broadcast message, and the dedicated configuration information is carried in the RRC message and/or the physical layer. In the control channel.
步骤 202: 第一设备基于所述发现信号的配置信息发送发现信号。  Step 202: The first device sends a discovery signal based on the configuration information of the discovery signal.
所述发现信号内容类别指示信息指示所述发现信号内容包括发现信息 时， 所述发现信号至少包括第一设备的网络身份信息和 /或第一设备的应用层 身份信息；  When the discovery signal content category indication information indicates that the discovery signal content includes discovery information, the discovery signal includes at least network identity information of the first device and/or application layer identity information of the first device;
所述发现信号内容类别指示信息指示所述发现信号内容包括通信配置信 息时， 所述发现信号至少包括第一设备通信配置信息。  And when the discovery signal content category indication information indicates that the discovery signal content includes communication configuration information, the discovery signal includes at least first device communication configuration information.
所述发现信号包括以下信息中的至少一个： 第一设备的标识信息、 第一 设备的设备特征信息、 第一设备的业务类型信息、 第一设备的业务量信息、 第一设备的业务内容摘要、 第一设备的网络身份信息、 第一设备的应用层身 份信息、 第一设备通信配置信息。  The discovery signal includes at least one of the following information: the identification information of the first device, the device feature information of the first device, the service type information of the first device, the traffic information of the first device, and the service content summary of the first device. The network identity information of the first device, the application layer identity information of the first device, and the first device communication configuration information.
所述第一设备的网络身份信息包括在网络中唯一标识该设备的身份信 息； 所述第一设备的应用层身份信息包括在应用中唯一标识该设备或该设备 所属用户的身份信息。  The network identity information of the first device includes identity information that uniquely identifies the device in the network; the application layer identity information of the first device includes identity information that uniquely identifies the device or a user to which the device belongs in the application.
可选地， 所述第一设备通信配置信息包括广播标识信息， 组播标识信息， 单播标识信息， 中继标识信息、 目的接收端的身份信息、 目的接收端组的组 身份信息、 业务信道的配置信息 （包括资源配置信息、 周期配置信息、 持续 时间、 发射功率配置信息或 MCS方式配置信息） 中的一个或多个。  Optionally, the first device communication configuration information includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, identity information of the destination receiving end, group identity information of the destination receiving end group, and a service channel. One or more of configuration information (including resource configuration information, periodic configuration information, duration, transmit power configuration information, or MCS mode configuration information).
第一设备按照所述同步信号中所携带的发现信号的配置信息中所指示的 资源进行发送所述发现信号， 或者， 按照所述同步信号中所携带的发现信号 的配置信息中所指示的第二资源池， 在所述第二资源池中自选资源发送所述 发现信号； 或者按照所述同步信号中所携带的发现信号的配置信息中所指示 的 MCS方式、 MCS方式集合、 周期、 持续时间或发射功率进行发送。  The first device sends the discovery signal according to the resource indicated in the configuration information of the discovery signal carried in the synchronization signal, or according to the indication indicated in the configuration information of the discovery signal carried in the synchronization signal. a second resource pool, wherein the discovery resource is sent by the optional resource in the second resource pool; or the MCS mode, the MCS mode set, the period, and the duration indicated in the configuration information of the discovery signal carried in the synchronization signal Or transmit power for transmission.
如控制节点配置或者预配置用于发送发现信号的资源、 资源池、 周期、 持续时间、发射功率或 MCS方式， 则同步信号中所携带的信息一定是控制节 点配置或预配置的信息的子集。 实施例二 If the control node is configured or pre-configured to use the resource, resource pool, period, duration, transmit power, or MCS mode for transmitting the discovery signal, the information carried in the synchronization signal must be a subset of the information of the control node configuration or pre-configuration. . Embodiment 2
本发明实施例二的设备到设备发现信号的传输方法， 该实施例从发现信 号接收端进行描述， 本发明实施例中， 也称发现信号发送端为第一设备， 发 现信号接收端为第二设备， 如图 3所示， 该方法包括：  The method for transmitting a device-to-device discovery signal according to the second embodiment of the present invention is described in the embodiment of the present invention. In the embodiment of the present invention, the discovery signal sending end is the first device, and the signal receiving end is the second. The device, as shown in Figure 3, includes:
步骤 301 : 第二设备检测第一设备发送的同步信号， 所述同步信号携带 所述第一设备要发送的发现信号的配置信息；  Step 301: The second device detects a synchronization signal sent by the first device, where the synchronization signal carries configuration information of the discovery signal to be sent by the first device.
所述第二设备按照控制节点配置的或者预配置的资源检测同步信号， 或 者， 按照控制节点配置的或预配置的资源池， 在所述资源池中盲检测同步信 号； 或者按照控制节点配置的或者预配置的周期、 持续时间、 发射功率、 同 步信号生成参数检测同步信号。  The second device detects the synchronization signal according to the resource configured by the control node or the pre-configured resource, or blindly detects the synchronization signal in the resource pool according to the resource pool configured or pre-configured by the control node; or configured according to the control node Or a pre-configured period, duration, transmit power, and synchronization signal generation parameter detection synchronization signal.
可选地， 所述同步信号还携带发现信号内容类别指示信息。  Optionally, the synchronization signal further carries discovery signal content category indication information.
步骤 302: 确定接收所述发现信号时， 所述第二设备根据所述发现信号 的配置信息接收所述发现信号。  Step 302: When it is determined that the discovery signal is received, the second device receives the discovery signal according to the configuration information of the discovery signal.
可选地， 所述第二设备根据自身的需求及同步信号确定是否接收所述发 现信号。  Optionally, the second device determines whether to receive the discovery signal according to its own requirement and a synchronization signal.
可选地， 当所述发现信号内容类别指示信息指示发现信号内容包括发现 信息， 并且第二设备自身的需求包括进行发现时， 所述第二设备接收所述发 现信号； 否则不接收所述发现信号。  Optionally, when the discovery signal content category indication information indicates that the discovery signal content includes discovery information, and the second device itself needs to perform discovery, the second device receives the discovery signal; otherwise, the discovery is not received. signal.
可选地， 当发现信号内容类别指示信息指示发现信号内容包括通信配置 信息， 并且第二设备自身的需求包括进行通信时， 所述第二设备接收所述发 现信号； 否则不接收所述发现信号。  Optionally, when the discovery signal content category indication information indicates that the discovery signal content includes communication configuration information, and the second device's own requirement includes performing communication, the second device receives the discovery signal; otherwise, the discovery signal is not received. .
当第二设备检测到所述同步信号以及其中所携带的第一设备的标识信息 和 /或第一设备的设备特征信息和 /或第一设备的第一业务特征信息时，所述第 二设备根据自身的需求确定接收所述发现信号， 或者不接收所述发现信号。  When the second device detects the synchronization signal and the identification information of the first device carried therein and/or the device feature information of the first device and/or the first service feature information of the first device, the second device The receiving of the discovery signal is determined according to its own needs, or the discovery signal is not received.
所述发现信号内容类别指示信息指示所述发现信号内容包括发现信息 时， 所述发现信号至少包括第一设备的网络身份信息和 /或第一设备的应用层 身份信息；  When the discovery signal content category indication information indicates that the discovery signal content includes discovery information, the discovery signal includes at least network identity information of the first device and/or application layer identity information of the first device;
所述发现信号内容类别指示信息指示所述发现信号内容包括通信配置信 息时， 所述发现信号至少包括第一设备通信配置信息。 The discovery signal content category indication information indicates that the discovery signal content includes a communication configuration letter The discovery signal includes at least first device communication configuration information.
所述发现信号包括以下信息中的至少一个： 第一设备的标识信息、 第一 设备的设备特征信息、 第一设备的业务类型信息、 第一设备的业务量信息、 第一设备的业务内容摘要、 第一设备的网络身份信息、 第一设备的应用层身 份信息、 第一设备通信配置信息。  The discovery signal includes at least one of the following information: the identification information of the first device, the device feature information of the first device, the service type information of the first device, the traffic information of the first device, and the service content summary of the first device. The network identity information of the first device, the application layer identity information of the first device, and the first device communication configuration information.
所述第一设备通信配置信息包括广播标识信息， 组播标识信息， 单播标 识信息， 中继标识信息、 目的接收端的身份信息、 目的接收端组的组身份信 息、 业务信道的配置信息中的一个或多个。  The first device communication configuration information includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, identity information of the destination receiving end, group identity information of the destination receiving end group, and configuration information of the traffic channel. one or more.
本发明实施例设备到设备发现信号的传输方法， 将同步信号与发现信号 分离， 可以高效的在相互同步或异步的设备之间实现发现， 并且可以提高资 源利用率， 降低功耗， 提升用户感受。  In the embodiment of the present invention, the device to device discovery signal transmission method separates the synchronization signal from the discovery signal, and can efficiently implement discovery between devices that are synchronized or asynchronous, and can improve resource utilization, reduce power consumption, and improve user experience. .
应用实例一 Application example one
在一个支持 D2D发现功能的 LTE FDD网络中 , UE1和 UE2位于基站的 覆盖范围之内。  In an LTE FDD network supporting D2D discovery, UE1 and UE2 are located within the coverage of the base station.
如图 4所示， 基站通过系统广播消息进行同步信号和发现信号的公共配 置， 具体包括配置同步信号的无线资源池为每个无线帧的子帧 1和子帧 5的 最后一个符号， 周期为 10ms, 持续时间为 1000ms, 发射功率为 20dBm, 同 步信号的生成参数配置为釆用与该小区 PRACH相同的参数配置， 包括生成 根序列索引， 可用循环移位索引， 序列分组规则； 以及发现信号的无线资源 池为每个偶数无线帧的子帧 2上除去 PUCCH所占用资源之外的 RB, 周期为 20ms, 持续时间为 50个发送周期， MCS方式为 LTE规则中 MCS = 4时的调 制编码方式。  As shown in FIG. 4, the base station performs a common configuration of the synchronization signal and the discovery signal through the system broadcast message, and specifically includes that the radio resource pool configuring the synchronization signal is the last symbol of the subframe 1 and the subframe 5 of each radio frame, and the period is 10 ms. The duration is 1000ms, and the transmit power is 20dBm. The generation parameters of the synchronization signal are configured to use the same parameter configuration as the PRACH of the cell, including generating a root sequence index, a cyclic shift index, a sequence grouping rule, and a wireless discovery signal. The resource pool is an RB except for the resources occupied by the PUCCH on the subframe 2 of each even radio frame, with a period of 20 ms and a duration of 50 transmission periods. The MCS mode is a modulation and coding scheme when the MCS is 4 in the LTE rule.
UE1根据来自基站的同步信号的公共配置， 在无线资源池中选择一个资 源进行同步信号的周期性发送， 同步信号中包含了 UE1的标识信息 ID1、 发 现信号内容类别指示信息以及发现信号的配置信息， 发现信号的配置信息包 括 UE1将要发送的发现信号所使用的时频资源位置， 发现信号内容类别指示 信息指示发信信号内容包括发现信息。 UEl还根据来自基站的发现信号的公共配置， 选择资源进行发现信号的 周期性发送， 其中发现信号包括 UE1的应用层身份信息即 MSN用户名。 The UE1 selects a resource in the radio resource pool to perform periodic transmission of the synchronization signal according to the common configuration of the synchronization signal from the base station, and the synchronization signal includes the identification information ID1 of the UE1, the discovery signal content category indication information, and the configuration information of the discovery signal. The configuration information of the discovery signal includes a time-frequency resource location used by the discovery signal to be sent by the UE1, and the discovery signal content category indication information indicates that the content of the signaling signal includes the discovery information. The UE1 also selects a resource to perform periodic transmission of the discovery signal according to the common configuration of the discovery signal from the base station, where the discovery signal includes the application layer identity information of the UE1, that is, the MSN user name.
UE2根据来自基站的同步信号的公共配置， 在无线资源池中进行盲检， 检测到来自 UE1的同步信号，并获取 UE1的标识信息、发现信号内容类别指 示信息以及发现信号的配置信息， 根据发现信号内容类别指示信息指示发现 信号内容包括发现信息确定接收相应的发现信号。  The UE2 performs blind detection in the radio resource pool according to the common configuration of the synchronization signal from the base station, detects the synchronization signal from the UE1, and acquires the identification information of the UE1, the discovery signal content category indication information, and the configuration information of the discovery signal, according to the discovery. The signal content category indication information indicates that the discovery signal content includes the discovery information determining to receive the corresponding discovery signal.
UE2以来自 UE1的同步信号为基准进行同步， 并根据同步信号中的发现 信号配置信息所指示的发现信号所使用的时频资源位置， 对所述发现信号进 行接收，当 UE2识别出发现信号中的 UE1的应用层身份标识即 MSN用户名， 此时 UE2完成了对 UE1的发现。  The UE2 synchronizes with the synchronization signal from the UE1, and receives the discovery signal according to the time-frequency resource location used by the discovery signal indicated by the discovery signal configuration information in the synchronization signal, when the UE2 recognizes the discovery signal. The application layer identity of UE1 is the MSN username, and UE2 completes the discovery of UE1.
应用实例二 Application example two
在一个支持发现功能的 LTE FDD网络中， UE1和 UE2位于基站的覆盖 范围之内。  In an LTE FDD network supporting discovery functions, UE1 and UE2 are located within the coverage of the base station.
如图 5所示， 基站通过系统广播消息进行同步信号和发现信号的公共配 置， 具体包括同步信号的无线资源池为每个无线帧的子帧 1 上除去 PUCCH 所占用资源之外的 RB, 周期为 10ms; 以及发现信号的无线资源池为每个偶 数无线帧的子帧 2上除去 PUCCH所占用资源之外的 RB,周期为 20ms, MCS 方式集合为 LTE规则中 MCS = 4和 6时的调制编码方式集合。  As shown in FIG. 5, the base station performs a common configuration of the synchronization signal and the discovery signal through the system broadcast message, and specifically includes the radio resource pool of the synchronization signal for the RB except the resource occupied by the PUCCH on the subframe 1 of each radio frame. 10 ms; and the radio resource pool of the discovery signal is the RB of the subframe 2 of each even radio frame except for the resources occupied by the PUCCH, the period is 20 ms, and the MCS mode set is the modulation when MCS = 4 and 6 in the LTE rule. A collection of encoding methods.
基站通过 RRC信令对 UE1进行同步信号和发现信号的专用配置， 具体 包括同步信号的无线资源为每个无线帧的子帧 1上的序号为 5的 RN对， 以 及发现信号的无线资源为每个偶数无线帧的子帧 2上序号为 10和 11的两个 RB对， 并且 MCS方式为 LTE规则中 MCS=6式的调制编码方式。  The base station performs dedicated configuration of the synchronization signal and the discovery signal to the UE1 through RRC signaling, and specifically includes the radio resource of the synchronization signal being the RN pair with the sequence number 5 on the subframe 1 of each radio frame, and the radio resource of the discovery signal is The two RB pairs with the sequence numbers 10 and 11 on the subframe 2 of the even-numbered radio frame, and the MCS mode is the modulation coding mode of the MCS=6 type in the LTE rule.
UE1根据基站配置的同步信号和发现信号的公共配置和专用配置进行同 步信号和发现信号的发送。 其中， 同步信号中携带了 UE1的标识信息 ID1 , UE1所提供的业务类型信息， 业务量信息， 发现信号内容类别指示信息以及 发现信号的配置信息， 其中， 业务类型信息为广告类、 业务量信息为少量， 发现信号的配置信息包括 UE1将要发送的发现信号所使用的时频资源位置， 发送周期，发现信号内容类别指示信息指示发现信号内容包括通信配置信息； 发现信号中承载 UE1的标识信息 ID1、UE1所提供的业务内容摘要和 UE1 的通信配置信息， 其中指示 UE1所提供的业务内容摘要为餐饮折扣信息， 并 且 UE1的通信配置信息包括传输形式为广播、 所提供业务信道的资源配置信 息。 The UE 1 performs transmission of the synchronization signal and the discovery signal according to the common configuration and the dedicated configuration of the synchronization signal and the discovery signal configured by the base station. The synchronization signal carries the identification information ID1 of the UE1, the service type information provided by the UE1, the traffic information, the discovery signal content category indication information, and the configuration information of the discovery signal, where the service type information is an advertisement type and a traffic quantity information. For a small amount, the configuration information of the discovery signal includes the time-frequency resource location used by the discovery signal to be transmitted by the UE1, The sending period, the discovery signal content category indication information indicates that the discovery signal content includes communication configuration information; the discovery signal carries the identification information ID1 of the UE1, the service content summary provided by the UE1, and the communication configuration information of the UE1, where the service content provided by the UE1 is indicated. The summary is the restaurant discount information, and the communication configuration information of the UE1 includes resource configuration information in the form of a broadcast and a provided service channel.
UE2根据基站配置的发现信号的公共配置， 并以基站的下行定时和频率 为基准， 进行发现信号的盲检接收， 并接收到来自 UE1的发现信号， 并且获 取 UE1的标识信息 ID1 , 和所提供的业务类型和业务量信息， 其中信息指示 了 UE1所提供的业务类型为广告类， 以及 UE1的通信配置信息，其中指示所 提供的业务内容摘要为餐饮折扣信息， 并且传输形式为广播， 还包括 UE1所 提供业务信道的资源配置信息。  The UE2 performs blind detection and reception of the discovery signal according to the common configuration of the discovery signal configured by the base station, and uses the downlink timing and frequency of the base station as a reference, and receives the discovery signal from the UE1, and acquires the identification information ID1 of the UE1, and provides the identifier information. The service type and the traffic information, where the information indicates that the service type provided by the UE1 is an advertisement class, and the communication configuration information of the UE1, wherein the service content summary is provided as the restaurant discount information, and the transmission form is broadcast, and includes Resource configuration information of the traffic channel provided by UE1.
UE2根据来自 UE1的同步信号和发现信号中的通信配置信息，确定 UE1 所提供的服务是自己感兴趣的， 并按照其通信配置信息接收来自 UE2的广播 业务传输。  The UE 2 determines, based on the synchronization signal from the UE 1 and the communication configuration information in the discovery signal, that the service provided by the UE 1 is of interest to itself, and receives the broadcast service transmission from the UE 2 in accordance with its communication configuration information.
应用实例三 Application example three
UE1和 UE2所处的位置没有蜂窝网网络， UE1属于一个 cluster并且在 cluster header ( CH ) 的覆盖范围内， UE2位于该 CH覆盖范围之外。  UE1 and UE2 are located at a location without a cellular network, UE1 belongs to a cluster and within the coverage of the cluster header (CH), UE2 is outside the CH coverage.
如图 6所示， CH通过广播方式进行同步信号的公共配置，具体包括同步 信号的无线资源池为每个无线帧的子帧 5上除去 PUCCH所占用资源之外的 RB,周期为 10ms; 以及发现信号的无线资源池为每个无线帧的子帧 2上除去 PUCCH所占用资源之外的 RB, 周期为 10ms, MCS方式集合为 LTE规则中 MCS = 4和 6时的调制编码方式集合。  As shown in FIG. 6 , the CH performs a common configuration of the synchronization signal by using a broadcast mode, and the radio resource pool including the synchronization signal is an RB except for the resources occupied by the PUCCH on the subframe 5 of each radio frame, and the period is 10 ms; The radio resource pool of the discovery signal is the RB of the subframe 2 of each radio frame except for the resources occupied by the PUCCH, and the period is 10 ms. The MCS mode set is the modulation coding mode set when MCS = 4 and 6 in the LTE rule.
UE1根据 CH配置的同步信号公共配置进行同步信号的发送， 其中， 同 步信号中携带了 UE1的标识信息 ID1、 UE1的设备特征信息、 发现信号内容 类别指示信息以及发现信号的配置信息， 其中 UE1的设备特征信息指示 UE1 为消防员设备， 发现信号的配置信息包括 UE1将要发送的发现信号所使用的 时频资源位置和周期， 发现信号内容类别指示信息指示发现信号内容包括通 信配置信息。 The UE1 performs the synchronization signal transmission according to the common configuration of the synchronization signal configured by the CH, where the synchronization signal carries the identification information ID1 of the UE1, the device characteristic information of the UE1, the discovery signal content category indication information, and the configuration information of the discovery signal, where the UE1 The device feature information indicates that the UE1 is a firefighter device, and the configuration information of the discovery signal includes the time-frequency resource location and period used by the discovery signal to be sent by the UE1, and the discovery signal content category indication information indicates that the discovery signal content includes the Letter configuration information.
UEl根据 CH配置的同步信号公共配置， 以及同步信号配置与发现信号 配置之间的映射关系， 计算出发现信号的公共配置包括无线资源池为每个无 线帧的子帧 2上除去 PUCCH所占用资源之外的 RB, 周期为 10ms, MCS方 式集合为 LTE规则中 MCS = 4和 6时的调制编码方式集合。  The UE1 calculates the common configuration of the synchronization signal according to the common configuration of the synchronization signal configured by the CH, and the mapping between the synchronization signal configuration and the discovery signal configuration, and the public resource pool includes the radio resource pool for removing the resources occupied by the PUCCH for the subframe 2 of each radio frame. The RBs outside the cycle have a period of 10 ms, and the MCS mode set is a modulation coding mode set when MCS = 4 and 6 in the LTE rule.
UE1根据所述发现信号的公共配置进行发现信号的发送， 其中， 发现信 号承载了 UE1的应用层身份信息、 UE1的业务类型信息、 通信配置信息， 其 中 UE1所提供的业务类型为火情报告， 通信配置信息包括传输形式为广播、 所提供业务信道的资源配置信息。  The UE1 performs the transmission of the discovery signal according to the common configuration of the discovery signal, where the discovery signal carries the application layer identity information of the UE1, the service type information of the UE1, and the communication configuration information, where the service type provided by the UE1 is a fire report. The communication configuration information includes resource configuration information in the form of a broadcast, a provided traffic channel.
UE2根据厂家预配置的同步信号的公共配置， 进行同步信号的盲检， 获 取来自 UE1的同步信号， 其中包含 UE1的标识信息， 以及 UE1的设备特征 信息指示 UE1为消防员设备， UE1将要发送的发现信号所使用的时频资源位 置， 以及发现信号内容类别指示信息指示为通信配置信息。  The UE2 performs blind detection of the synchronization signal according to the common configuration of the synchronization signal pre-configured by the manufacturer, acquires the synchronization signal from the UE1, and includes the identification information of the UE1, and the device feature information of the UE1 indicates that the UE1 is a firefighter device, and the UE1 is to be sent. The time-frequency resource location used by the discovery signal, and the discovery signal content category indication information are indicated as communication configuration information.
UE2根据 UE1的设备类型和发现信号类别指示信息判断 UE1的发现信 号是自己感兴趣的， 并以来自 UE1的同步信号作为时间和频率的基准， 根据 来自 UE1的发现信号配置信息，对发现信号进行接收， 并且获取 UE1所提供 的业务类型为火情报告， 传输形式为广播， UE1所提供业务信道的资源配置 信息， UE1的应用层身份信息。  The UE2 judges that the discovery signal of the UE1 is interested by itself according to the device type and the discovery signal class indication information of the UE1, and uses the synchronization signal from the UE1 as a reference of time and frequency, and performs discovery signal according to the discovery signal configuration information from the UE1. Receiving, and obtaining the service type provided by the UE1 as a fire report, the transmission form is broadcast, the resource configuration information of the service channel provided by the UE1, and the application layer identity information of the UE1.
UE2根据来自 UE1的通信配置信息， 确定 UE1所提供的消息是自己感 兴趣的， 并按照其通信配置信息接收来自 UE2的广播业务传输。  The UE 2 determines, based on the communication configuration information from the UE 1, that the message provided by the UE 1 is of interest to itself, and receives the broadcast service transmission from the UE 2 in accordance with its communication configuration information.
实施例四 Embodiment 4
UE1 和 UE2 所处的位置没有蜂窝网网络， 也不处于任何一个 cluster header的覆盖范围内。  UE1 and UE2 are located in a location without a cellular network and are not covered by any of the cluster headers.
如图 7所示， UE1和 UE2的生产厂家通过预配置已经完成对同步信号和 发现信号的公共配置， 具体包括同步信号的无线资源池为每个无线帧的子帧 1和 5上除去 PUCCH所占用资源之外的 RB, 周期为 10ms; 以及发现信号的 无线资源池为每个偶数无线帧的子帧 2 上除去 PUCCH所占用资源之外的 RB, 周期为 20ms, MCS方式集合为 LTE规则中 MCS = 4和 6时的调制编码 方式集合。 As shown in FIG. 7, the manufacturer of UE1 and UE2 has completed the common configuration of the synchronization signal and the discovery signal by pre-configuration, and specifically includes the radio resource pool of the synchronization signal for removing PUCCH for subframes 1 and 5 of each radio frame. RBs occupying resources other than the period of 10 ms; and the radio resource pool of the discovery signal is other than the resources occupied by the PUCCH on the subframe 2 of each even radio frame RB, the period is 20ms, and the MCS mode is a set of modulation and coding modes when MCS = 4 and 6 in the LTE rule.
UE1根据预配置的同步信号公共配置进行同步信号的发送， 其中， 同步 信号中携带了 UE1的标识信息 ID1 , 以及 UE1的业务特征信息、 发现信号内 容类别指示信息指示 UE1所提供的业务为火情报告， 以及发现信号的配置信 息， 其中， UE1的业务特征信息指示 UE1所提供的业务为火情报告， 发现信 号的配置信息包括 UE1将要发送的发现信号所使用的时频资源位置， 以及发 现信号内容类别指示信息指示为发现信号内容包括通信配置信息。  The UE1 performs the synchronization signal transmission according to the pre-configured synchronization signal common configuration, where the synchronization signal carries the identification information ID1 of the UE1, and the service characteristic information of the UE1 and the discovery signal content category indication information indicate that the service provided by the UE1 is a fire situation. And the configuration information of the discovery signal, where the service characteristic information of the UE1 indicates that the service provided by the UE1 is a fire report, and the configuration information of the discovery signal includes a time-frequency resource location used by the discovery signal to be sent by the UE1, and a discovery signal. The content category indication information indicates that the discovery signal content includes communication configuration information.
UE1根据预配置的发现信号的公共配置进行发现信号的发送， 其中， 发 现信号承载了 UE1的网络身份信息 ID1X, 以及 UE1的通信配置信息， 其中 指示传输形式为组播， 以及目的接收端组的组身份信息为第一消防队， 还包 括所提供业务信道的资源配置信息。  The UE1 performs the sending of the discovery signal according to the common configuration of the pre-configured discovery signal, where the discovery signal carries the network identity information ID1X of the UE1, and the communication configuration information of the UE1, wherein the indication transmission form is multicast, and the destination receiving end group The group identity information is the first fire brigade, and also includes resource configuration information of the provided traffic channel.
UE2根据厂家预配置的同步信号的公共配置， 进行同步信号的盲检， 获 取来自 UE1的同步信号， 其中包含 UE1的标识信息 ID1 , 以及 UE1所提供 的业务类型为火情报告， 以及 UE1将要发送的发现信号所使用的时频资源位 置， 以及发现信号内容包括通信配置信息。  The UE2 performs blind detection of the synchronization signal according to the common configuration of the synchronization signal pre-configured by the manufacturer, acquires the synchronization signal from the UE1, and includes the identification information ID1 of the UE1, and the service type provided by the UE1 is a fire report, and the UE1 is to send The time-frequency resource location used by the discovery signal, and the discovery signal content include communication configuration information.
UE2根据 UE1的设备类型和发现信号类别指示信息判断 UE1的发现信 号是自己感兴趣的， 并根据来自 UE1的发现信号配置信息， 对发现信号进行 接收， 并且获取 UE1的网络身份信息 ID1X, 以及 UE1的通信配置信息， 其 中指示了 UE1所提供的业务的传输形式为组播， 并且其业务发送目的端是第 一消防队， 以及 UE1所提供业务信道的资源配置信息。  The UE2 determines that the discovery signal of the UE1 is interested by itself according to the device type and the discovery signal class indication information of the UE1, and receives the discovery signal according to the discovery signal configuration information from the UE1, and acquires the network identity information ID1X of the UE1, and the UE1. The communication configuration information indicates that the transmission form of the service provided by the UE1 is multicast, and the service transmission destination end is the first fire department, and the resource configuration information of the service channel provided by the UE1.
UE2根据来自 UE1的通信配置信息， 确定 UE1所提供的消息是自己感 兴趣的，并且 UE2属于第一消防队，此时 UE2按照其通信配置信息接收来自 UE2的组播业务传输。  The UE2 determines, according to the communication configuration information from the UE1, that the message provided by the UE1 is of interest to the UE, and that the UE2 belongs to the first fire brigade, and at this time, the UE2 receives the multicast service transmission from the UE2 according to its communication configuration information.
为了实现上述方法实施例一， 本发明实施例还提供了一种用户设备， 如 图 8所示， 该用户设备包括： In order to implement the first embodiment of the foregoing method, the embodiment of the present invention further provides a user equipment. As shown in FIG. 8, the user equipment includes:
同步信号发送模块 801设置成： 发送同步信号， 其中所述同步信号携带 所述第一设备要发送的发现信号的配置信息； The synchronization signal sending module 801 is configured to: send a synchronization signal, where the synchronization signal carries Configuration information of the discovery signal to be sent by the first device;
发现信号发送模块 802设置成： 基于所述发现信号的配置信息发送发现 信号。 可选地， 所述发现信号的配置信息包括以下信息中的一个或多个： 所述 第一设备所要发送的发现信号所使用的资源配置信息、 周期配置信息、 持续 时间配置信息、 发射功率配置信息、 MCS方式配置信息。 可选地， 所述发现信号发送模块 802设置成按照如下方式基于所述发现 信号的配置信息发送发现信号：  The discovery signal transmitting module 802 is configured to: transmit a discovery signal based on the configuration information of the discovery signal. Optionally, the configuration information of the discovery signal includes one or more of the following information: resource configuration information, periodic configuration information, duration configuration information, and transmit power configuration used by the discovery signal to be sent by the first device. Information, MCS mode configuration information. Optionally, the discovery signal sending module 802 is configured to send the discovery signal based on the configuration information of the discovery signal as follows:
所述第一设备按照所的发现信号的配置信息中所指示的资源进行发送所 述发现信号， 或者， 按照所述发现信号的配置信息中所指示的第二资源池， 在所述第二资源池中自选资源发送所述发现信号； 或者按照所述发现信号的 配置信息中所指示的 MCS方式、 MCS方式集合、 周期、 持续时间或发射功 率进行发送。  The first device sends the discovery signal according to the resource indicated in the configuration information of the discovery signal, or according to the second resource pool indicated in the configuration information of the discovery signal, in the second resource The discovery resource is sent by the self-selected resource in the pool; or is sent according to the MCS mode, the MCS mode set, the period, the duration, or the transmit power indicated in the configuration information of the discovery signal.
所述同步信号还携带以下信息中的至少一个： 第一设备的标识信息、 第 一设备的设备特征信息、 第一设备的业务类型信息、 第一设备的业务量信息、 发现信号内容类别指示信息。  The synchronization signal further carries at least one of the following information: identifier information of the first device, device feature information of the first device, service type information of the first device, traffic volume information of the first device, and discovery signal content category indication information .
所述发现信号内容类别指示信息指示所述发现信号内容包括发现信息 时， 所述发现信号至少包括第一设备的网络身份信息和 /或第一设备的应用层 身份信息；  When the discovery signal content category indication information indicates that the discovery signal content includes discovery information, the discovery signal includes at least network identity information of the first device and/or application layer identity information of the first device;
所述发现信号内容类别指示信息指示所述发现信号内容包括通信配置信 息时， 所述发现信号至少包括第一设备通信配置信息。  And when the discovery signal content category indication information indicates that the discovery signal content includes communication configuration information, the discovery signal includes at least first device communication configuration information.
为了实现上述方法实施例二， 本发明实施例还提供了一种用户设备， 如 图 9所示， 该用户设备包括：  In order to implement the foregoing method embodiment 2, the embodiment of the present invention further provides a user equipment, as shown in FIG. 9, the user equipment includes:
同步信号检测模块 901设置成： 检测第一设备发送的同步信号， 所述同 步信号携带所述第一设备要发送的发现信号的配置信息；  The synchronization signal detection module 901 is configured to: detect a synchronization signal sent by the first device, where the synchronization signal carries configuration information of the discovery signal to be sent by the first device;
发现信号接收模块 902设置成： 确定是否接收所述发现信号， 若是， 根 据所述发现信号的配置信息接收所述发现信号。 可选地， 所述第二设备根据自身的需求及同步信号确定是否接收所述发 现信号。 The discovery signal receiving module 902 is configured to: determine whether to receive the discovery signal, and if so, receive the discovery signal according to the configuration information of the discovery signal. Optionally, the second device determines whether to receive the discovery signal according to its own requirement and a synchronization signal.
可选地， 所述同步信号还携带以下信息中的至少一个： 第一设备的标识 信息、 第一设备的设备特征信息、 第一设备的业务类型信息、 第一设备的业 务量信息、 发现信号内容类别指示信息。  Optionally, the synchronization signal further carries at least one of the following information: identifier information of the first device, device feature information of the first device, service type information of the first device, traffic information of the first device, and a discovery signal. Content category indication information.
可选地， 所述发现信号内容类别指示信息指示所述发现信号内容包括发 现信息时， 所述发现信号至少包括第一设备的网络身份信息和 /或第一设备的 应用层身份信息；  Optionally, when the discovery signal content category indication information indicates that the discovery signal content includes the discovery information, the discovery signal includes at least network identity information of the first device and/or application layer identity information of the first device;
所述发现信号内容类别指示信息指示所述发现信号内容包括通信配置信 息时， 所述发现信号至少包括第一设备通信配置信息。  And when the discovery signal content category indication information indicates that the discovery signal content includes communication configuration information, the discovery signal includes at least first device communication configuration information.
相较于相关技术， 本发明实施例的设备到设备发现信号的传输方法及用 户设备， 将同步信号与发现信号分离， 可以高效的在相互同步或异步的设备 之间实现发现， 并且可以提高资源利用率， 降低功耗， 提升用户感受。  Compared with the related art, the device-to-device discovery signal transmission method and the user equipment in the embodiment of the present invention separate the synchronization signal from the discovery signal, and can efficiently realize discovery between mutually synchronized or asynchronous devices, and can improve resources. Utilization, reduce power consumption, and enhance user experience.
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 所述程序可以存储于计算机可读存储介质中， 如只读 存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地， 上述实施例中的各模块可以釆用硬件 的形式实现， 也可以釆用软件功能模块的形式实现。 本发明不限制于任何特 定形式的硬件和软件的结合。 One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module in the foregoing embodiment may be implemented in the form of hardware, or may be implemented in the form of a software function module. The invention is not limited to any specific combination of hardware and software.
当然， 本发明还可有其他多种实施例， 在不背离本发明精神及其实质的 形， 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。  It is a matter of course that the invention may be embodied in various other forms without departing from the spirit and scope of the invention.
工业实用性 Industrial applicability
上述技术方案的设备到设备发现信号的传输方法及用户设备， 将同步信 号与发现信号分离， 可以高效的在相互同步或异步的设备之间实现发现， 并 且可以提高资源利用率， 降低功耗， 提升用户感受。 因此本发明具有很强的 工业实用性。  The device-to-device discovery signal transmission method and the user equipment of the foregoing technical solution separate the synchronization signal from the discovery signal, and can efficiently realize discovery between mutually synchronized or asynchronous devices, and can improve resource utilization and reduce power consumption. Improve user experience. Therefore, the present invention has strong industrial applicability.

Claims

权 利 要 求 书 claims
1、 一种设备到设备发现信号的传输方法， 该方法包括： 1. A device-to-device discovery signal transmission method, the method includes:
第一设备发送同步信号， 其中， 所述同步信号携带所述第一设备要发送 的发现信号的配置信息； The first device sends a synchronization signal, wherein the synchronization signal carries the configuration information of the discovery signal to be sent by the first device;
所述第一设备基于所述发现信号的配置信息发送发现信号。 The first device sends a discovery signal based on the configuration information of the discovery signal.
2、 如权利要求 1所述的传输方法， 其中： 所述同步信号还携带以下信息 中的至少一个： 所述第一设备的标识信息、 所述第一设备的设备特征信息、 所述第一设备的业务类型信息、 所述第一设备的业务量信息、 发现信号内容 类别指示信息。 2. The transmission method according to claim 1, wherein: the synchronization signal also carries at least one of the following information: identification information of the first device, device characteristic information of the first device, The service type information of the device, the service volume information of the first device, and the discovery signal content type indication information.
3、 如权利要求 2所述的传输方法， 其中： 3. The transmission method as claimed in claim 2, wherein:
所述发现信号内容类别指示信息指示所述发现信号的内容包括发现信息 时， 所述发现信号至少包括所述第一设备的网络身份信息和 /或所述第一设备 的应用层身份信息； When the discovery signal content type indication information indicates that the content of the discovery signal includes discovery information, the discovery signal at least includes network identity information of the first device and/or application layer identity information of the first device;
所述发现信号内容类别指示信息指示所述发现信号的内容包括通信配置 信息时， 所述发现信号至少包括所述第一设备的通信配置信息。 When the discovery signal content type indication information indicates that the content of the discovery signal includes communication configuration information, the discovery signal at least includes communication configuration information of the first device.
4、 如权利要求 1所述的传输方法， 其中： 所述发现信号包括以下信息中 的至少一个： 所述第一设备的标识信息、 所述第一设备的设备特征信息、 所 述第一设备的业务类型信息、 所述第一设备的业务量信息、 所述第一设备的 业务内容摘要、 所述第一设备的网络身份信息、 所述第一设备的应用层身份 信息、 所述第一设备的通信配置信息。 4. The transmission method according to claim 1, wherein: the discovery signal includes at least one of the following information: identification information of the first device, device characteristic information of the first device, service type information, business volume information of the first device, service content summary of the first device, network identity information of the first device, application layer identity information of the first device, the first device Communication configuration information of the device.
5、 如权利要求 3或 4所述的传输方法， 其中： 所述第一设备的通信配置 信息包括广播标识信息， 组播标识信息， 单播标识信息， 中继标识信息、 目 的接收端的身份信息、 目的接收端组的组身份信息、 业务信道的配置信息中 的一个或多个。 5. The transmission method according to claim 3 or 4, wherein: the communication configuration information of the first device includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, and identity information of the destination receiving end. , one or more of the group identity information of the destination receiving end group, and the configuration information of the service channel.
6、 如权利要求 1所述的传输方法， 其中: 所述发现信号的配置信息包括以下信息中的一个或多个： 所述第一设备 所要发送的发现信号所使用的资源配置信息、 周期配置信息、 持续时间配置 信息、 发射功率配置信息、 MCS方式配置信息。 6. The transmission method as claimed in claim 1, wherein: The configuration information of the discovery signal includes one or more of the following information: resource configuration information, period configuration information, duration configuration information, transmission power configuration information, MCS mode used by the discovery signal to be sent by the first device Configuration information.
7、 如权利要求 1所述的传输方法， 其中： 所述第一设备基于所述发现信 号的配置信息发送发现信号的步骤包括： 所述第一设备按照所的发现信号的配置信息中所指示的资源进行发送所 述发现信号， 或者， 按照所述发现信号的配置信息中所指示的第二资源池， 在所述第二资源池中自选资源发送所述发现信号； 或者按照所述发现信号的 配置信息中所指示的 MCS方式、 MCS方式集合、 周期、 持续时间或发射功 率进行发送。 7. The transmission method of claim 1, wherein: the step of the first device sending a discovery signal based on the configuration information of the discovery signal includes: the first device transmits the discovery signal as indicated in the configuration information of the discovery signal. resources to send the discovery signal, or, according to the second resource pool indicated in the configuration information of the discovery signal, self-selected resources in the second resource pool send the discovery signal; or according to the discovery signal The MCS mode, MCS mode set, period, duration or transmit power indicated in the configuration information is sent.
8、 一种设备到设备发现信号的传输方法， 该方法包括： 8. A device-to-device discovery signal transmission method, the method includes:
第二设备检测第一设备发送的同步信号， 所述同步信号携带所述第一设 备要发送的发现信号的配置信息； The second device detects the synchronization signal sent by the first device, and the synchronization signal carries the configuration information of the discovery signal to be sent by the first device;
所述第二设备确定是否接收所述发现信号， 若是， 则所述第二设备根据 所述发现信号的配置信息接收所述发现信号。 The second device determines whether to receive the discovery signal, and if so, the second device receives the discovery signal according to the configuration information of the discovery signal.
9、 如权利要求 8所述的传输方法， 其中： 所述第二设备根据自身的需求 及同步信号确定是否接收所述发现信号。 9. The transmission method according to claim 8, wherein: the second device determines whether to receive the discovery signal according to its own needs and a synchronization signal.
10、 如权利要求 8所述的传输方法， 其中： 10. The transmission method as claimed in claim 8, wherein:
所述同步信号还携带发现信号内容类别指示信息； 其中： The synchronization signal also carries discovery signal content type indication information; where:
所述发现信号内容类别指示信息指示所述发现信号的内容包括发现信息 时， 所述发现信号至少包括所述第一设备的网络身份信息和 /或所述第一设备 的应用层身份信息； When the discovery signal content type indication information indicates that the content of the discovery signal includes discovery information, the discovery signal at least includes network identity information of the first device and/or application layer identity information of the first device;
所述发现信号内容类别指示信息指示所述发现信号的内容包括通信配置 信息时， 所述发现信号至少包括所述第一设备的通信配置信息。 When the discovery signal content type indication information indicates that the content of the discovery signal includes communication configuration information, the discovery signal at least includes communication configuration information of the first device.
11、 如权利要求 8所述的传输方法， 其中： 11. The transmission method as claimed in claim 8, wherein:
所述发现信号包括以下信息中的至少一个： 所述第一设备的标识信息、 所述第一设备的设备特征信息、 所述第一设备的业务类型信息、 所述第一设 备的业务量信息、 所述第一设备的业务内容摘要、 所述第一设备的网络身份 信息、 所述第一设备的应用层身份信息、 所述第一设备的通信配置信息。 The discovery signal includes at least one of the following information: identification information of the first device, The device characteristic information of the first device, the service type information of the first device, the service volume information of the first device, the service content summary of the first device, the network identity information of the first device, The application layer identity information of the first device and the communication configuration information of the first device.
12、 如权利要求 10或 11所述的传输方法， 其中： 所述第一设备的通信 配置信息包括广播标识信息， 组播标识信息， 单播标识信息， 中继标识信息、 目的接收端的身份信息、 目的接收端组的组身份信息、 业务信道的配置信息 中的一个或多个。 12. The transmission method according to claim 10 or 11, wherein: the communication configuration information of the first device includes broadcast identification information, multicast identification information, unicast identification information, relay identification information, and identity information of the destination receiving end. , one or more of the group identity information of the destination receiving end group, and the configuration information of the service channel.
13、 一种用户设备， 该用户设备包括同步信号发送模块和发现信号发送 模块， 其中： 13. A user equipment, the user equipment includes a synchronization signal sending module and a discovery signal sending module, wherein:
所述同步信号发送模块设置成： 发送同步信号， 其中所述同步信号携带 所述用户设备要发送的发现信号的配置信息； The synchronization signal sending module is configured to: send a synchronization signal, wherein the synchronization signal carries the configuration information of the discovery signal to be sent by the user equipment;
所述发现信号发送模块设置成： 基于所述发现信号的配置信息发送所述 发现信号。 The discovery signal sending module is configured to: send the discovery signal based on the configuration information of the discovery signal.
14、 如权利要求 13所述的用户设备， 其中： 所述同步信号还携带以下信 息中的至少一个： 所述用户设备的标识信息、 所述用户设备的设备特征信息、 所述用户设备的业务类型信息、 所述用户设备的业务量信息、 发现信号内容 类别指示信息。 14. The user equipment according to claim 13, wherein: the synchronization signal also carries at least one of the following information: identification information of the user equipment, device feature information of the user equipment, services of the user equipment Type information, traffic information of the user equipment, and discovery signal content category indication information.
15、 如权利要求 14所述的用户设备， 其中： 15. The user equipment as claimed in claim 14, wherein:
所述发现信号内容类别指示信息指示所述发现信号的内容包括发现信息 时， 所述发现信号至少包括所述用户设备的网络身份信息和 /或所述用户设备 的应用层身份信息； When the discovery signal content type indication information indicates that the content of the discovery signal includes discovery information, the discovery signal at least includes the network identity information of the user equipment and/or the application layer identity information of the user equipment;
所述发现信号内容类别指示信息指示所述发现信号的内容包括通信配置 信息时， 所述发现信号至少包括所述用户设备的通信配置信息。 When the discovery signal content type indication information indicates that the content of the discovery signal includes communication configuration information, the discovery signal at least includes communication configuration information of the user equipment.
16、 一种用户设备， 该用户设备包括同步信号检测模块和发现信号接收 模块， 其中： 16. A user equipment, which includes a synchronization signal detection module and a discovery signal receiving module, wherein:
所述同步信号检测模块设置成： 检测第一设备发送的同步信号， 所述同 步信号携带所述第一设备要发送的发现信号的配置信息； The synchronization signal detection module is configured to: detect the synchronization signal sent by the first device; The step signal carries configuration information of the discovery signal to be sent by the first device;
所述发现信号接收模块设置成： 确定是否接收所述发现信号， 若是， 根 据所述发现信号的配置信息接收所述发现信号。 The discovery signal receiving module is configured to: determine whether to receive the discovery signal, and if so, receive the discovery signal according to the configuration information of the discovery signal.
17、 如权利要求 16所述的用户设备， 其中： 所述发现信号接收模块根据 自身的需求及同步信号确定是否接收所述发现信号。 17. The user equipment according to claim 16, wherein: the discovery signal receiving module determines whether to receive the discovery signal according to its own needs and synchronization signals.
18、 如权利要求 16所述的用户设备， 其中： 所述同步信号还携带以下信 息中的至少一个： 所述第一设备的标识信息、 所述第一设备的设备特征信息、 所述第一设备的业务类型信息、 所述第一设备的业务量信息、 发现信号内容 类别指示信息。 18. The user equipment according to claim 16, wherein: the synchronization signal also carries at least one of the following information: identification information of the first device, device characteristic information of the first device, The service type information of the device, the service volume information of the first device, and the discovery signal content type indication information.
19、 如权利要求 18所述的用户设备， 其中： 19. The user equipment as claimed in claim 18, wherein:
所述发现信号内容类别指示信息指示所述发现信号的内容包括发现信息 时， 所述发现信号至少包括所述第一设备的网络身份信息和 /或所述第一设备 的应用层身份信息； When the discovery signal content type indication information indicates that the content of the discovery signal includes discovery information, the discovery signal at least includes network identity information of the first device and/or application layer identity information of the first device;
所述发现信号内容类别指示信息指示所述发现信号内容包括通信配置信 息时， 所述发现信号至少包括所述第一设备的通信配置信息。 When the discovery signal content type indication information indicates that the discovery signal content includes communication configuration information, the discovery signal at least includes communication configuration information of the first device.
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