WO2014124610A1 - Procédé et appareil de découverte de dispositif - Google Patents

Procédé et appareil de découverte de dispositif Download PDF

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Publication number
WO2014124610A1
WO2014124610A1 PCT/CN2014/072167 CN2014072167W WO2014124610A1 WO 2014124610 A1 WO2014124610 A1 WO 2014124610A1 CN 2014072167 W CN2014072167 W CN 2014072167W WO 2014124610 A1 WO2014124610 A1 WO 2014124610A1
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Prior art keywords
resource configuration
device discovery
resource
access node
configuration
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PCT/CN2014/072167
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English (en)
Chinese (zh)
Inventor
吴栓栓
陈琳
梁枫
贺海港
李运锋
谢峰
Original Assignee
中兴通讯股份有限公司
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Publication of WO2014124610A1 publication Critical patent/WO2014124610A1/fr

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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

Definitions

  • the present invention relates to cellular wireless communication technologies, and in particular, to a device discovery method and apparatus. Background technique
  • the access node may be a base station (BS, Base Station), or a Node B (NB, Node B), or an evolved Node B (eNB, evolved Node B), or an enhanced Node B (eNB, The enhanced node B), etc.
  • the access node transmits the user data to the access node of the cell where the UE2 is located through the core network, and the access node of the cell where the UE2 is located transmits the service data to the UE2 through the air interface.
  • the service data transmission from UE2 to UE1 adopts a similar processing flow.
  • D2D device-to-device
  • ProSe Proximity Service
  • the UE In cellular communication, when two UEs communicate, in general, the UE itself does not need to know the location of the other party's UE, but through the network side device, for example, an access node or a core network device.
  • Establish a connection between two UEs For D2D communication, the premise of establishing a communication connection is mutual discovery between UEs, which may also be called device-to-device discovery or device discovery.
  • the location distribution of UEs is random, close to each other, and UEs with device-to-device communication conditions may reside in the same cell, or may reside in different cells, such as neighboring cells.
  • Device discovery in D2D communication needs to consider the above various situations. Summary of the invention
  • the embodiments of the present invention mainly provide a device discovery method and device.
  • the first access node receiving device discovers the first resource configuration, generates a second resource configuration for indicating the device discovery resource to the user equipment according to the device discovery first resource configuration, and sends the second resource configuration to the user device ;
  • the device discovery resource is used by the user equipment for device discovery of device to device communication.
  • the first access node receiving device discovers the first resource configuration, and generates a second resource configuration for indicating the device discovery resource to the user equipment according to the device discovery first resource configuration, including:
  • the first resource configuration is sent by an upper layer network entity, where the first resource configuration includes an upper layer configuration parameter of the device discovery resource, and the first access node is configured according to the upper layer configuration parameter and a radio frame and/or wireless of the subordinate cell.
  • the subframe timing generates a second resource configuration for indicating that the device discovers the resource;
  • the first resource configuration is sent by an upper layer network entity, where the first resource configuration includes an upper layer configuration parameter of the device discovery resource, and the first access node generates, according to the upper layer configuration parameter, used to indicate that the device discovers the resource.
  • Second resource configuration is sent by an upper layer network entity, where the first resource configuration includes an upper layer configuration parameter of the device discovery resource, and the first access node generates, according to the upper layer configuration parameter, used to indicate that the device discovers the resource.
  • the first access node receiving device discovers the first resource configuration, according to the The device discovers that the first resource configuration generates a second resource configuration for indicating the device discovery resource to the user equipment UE, including:
  • the first resource configuration is sent by the second access node, where the first resource configuration includes device discovery resource configuration parameters of the second access node or the cell of the second access node, the first access node Generating, according to the device discovery resource configuration parameter of the second access node, and the radio frame and/or the radio subframe timing of the subordinate cell, a second resource configuration for instructing the device to discover the resource; or, the first resource configuration is configured by The second access node sends the device discovery resource configuration parameter of the second access node, and the first access node generates, according to the device discovery resource configuration parameter of the second access node, an indication. The second resource configuration of the device discovery resource.
  • the method further includes:
  • the second resource is configured to indicate a configuration of a device discovery resource of a cell of the second access node
  • the first access node is configured to indicate a third resource configuration of the resource discovery resources of the subordinate cell device
  • the first access node sends the second resource configuration and the third resource configuration to a user equipment.
  • the device discovery resource is a time domain resource
  • the upper layer configuration parameter indicates the time domain resource by indicating a logical frame and/or a logical subframe position, and the first access node according to the logical frame and/or the logical subframe and the subordinate cell radio frame and/or Or the timing offset of the wireless subframe, generating a configuration parameter for indicating the time domain resource, and sending the configuration parameter to the user equipment by using the second resource configuration; or
  • the upper layer configuration parameter indicates the time domain resource by indicating a radio frame and/or a radio subframe position, and the first access node generates, according to the radio frame and/or the radio subframe position, an indication Determining configuration parameters of the time domain resource, and sending the configuration parameter by using the second resource configuration Send to user equipment.
  • the device discovery resource is a time domain resource
  • the device discovery resource configuration parameter of the second access node indicates the time domain resource by indicating a radio frame and/or a radio subframe position; the first access node according to a radio frame of its own subordinate cell and/or a deviation between a radio subframe timing and a radio frame and/or a radio subframe timing of a cell of the second access node, generating a configuration parameter for indicating the time domain resource, and configuring the configuration by using a second resource configuration
  • the parameter is sent to the user equipment; or,
  • the device discovery resource configuration parameter of the second access node indicates the time domain resource by indicating a radio frame and/or a radio subframe position; the first access node is configured according to the radio frame and/or the wireless sub-
  • the frame location generates a configuration parameter for indicating the time domain resource, and sends the configuration parameter to the user equipment by using the second resource configuration.
  • the third resource configuration includes a configuration parameter for indicating a device discovery time domain resource of the cell of the first access node, where the configuration parameter indicates a radio frame and/or a radio subframe position.
  • the mode indicates the time domain resource.
  • the first resource configuration further includes a frequency domain resource configuration parameter discovered by the device
  • the frequency domain resource configuration parameter indicates that the device discovers the frequency domain resource by indicating the allocated frequency domain resource block and/or the carrier index, and the device discovers that the frequency domain resource is used by the user equipment to perform device-to-device communication device discovery.
  • the third resource configuration includes a frequency domain resource configuration parameter, where the frequency domain resource configuration parameter indicates, by indicating the allocated frequency domain resource block and/or the carrier index, the device discovers the frequency domain resource, where the device The discovery of frequency domain resources for device discovery by user equipment for device-to-device communication.
  • the second access node is an access node that has at least one of the following features: a primary access node that belongs to a discovery area in the same manner as the first access node; An access node adjacent to the first access node;
  • An access node having a communication link with the first access node
  • An access node configured with device discovery resources.
  • a device discovery device provided by an embodiment of the present invention includes: a first communication module, a radio resource configuration module, and a second communication module;
  • the first communication module is configured to receive, by the device, the first resource configuration
  • the radio resource configuration module is configured to generate, according to the first resource configuration, a second resource configuration for indicating a device discovery resource to the user equipment;
  • the second communication module is configured to send the second resource configuration generated by the wireless configuration module to the user equipment;
  • the device discovery resource is used by the user equipment for device discovery of device to device communication.
  • the first communication module is configured to receive a first resource configuration sent by an upper layer network entity, where the first resource configuration includes an upper layer configuration parameter of the device discovery resource;
  • the radio resource configuration module is configured to generate, according to the upper layer configuration parameter and the radio frame and/or the radio subframe timing of the subordinate cell, a second resource configuration for instructing the device to discover the resource;
  • the first communication module is configured to receive a first resource configuration sent by an upper layer network entity, where the first resource configuration includes an upper layer configuration parameter of the device discovery resource;
  • the radio resource configuration module is configured to generate, according to the upper layer configuration parameter, a second resource configuration for instructing the device to discover resources.
  • the first communication module is configured to receive a first resource configuration sent by the second access node, where the first resource configuration includes a device discovery resource configuration parameter of the second access node;
  • the radio resource configuration module is configured to generate, according to the device discovery resource configuration parameter of the second access node, a radio frame and/or a radio subframe timing of the subordinate cell, for indicating The second resource configuration of the device discovery resource;
  • the first communication module is configured to receive a first resource configuration that is sent by the second access node, where the first resource configuration includes a device discovery resource configuration parameter of the second access node;
  • the radio resource configuration module is configured to generate a second resource configuration for instructing the device to discover the resource according to the device discovery resource configuration parameter of the second access node.
  • the second resource is configured to indicate a configuration of a device discovery resource of a cell of the second access node
  • the radio resource configuration module is further configured to indicate a third resource configuration for discovering resources of the subordinate cell device
  • the second communication module is configured to send the second resource configuration and the third resource configuration to the user equipment.
  • the device discovery resource is a time domain resource
  • the upper layer configuration parameter indicates the time domain resource by indicating a logical frame and/or a logical subframe position
  • the radio resource configuration module is configured to generate a configuration parameter for indicating the time domain resource according to a timing deviation between the logical frame and/or the logical sub-frame and the subordinate cell radio frame and/or the radio sub-frame;
  • the second communication module is configured to send the configuration parameter to the user equipment by using the second resource configuration
  • the upper layer configuration parameter indicates the time domain resource by indicating a location of a radio frame and/or a radio subframe
  • the radio resource configuration module is configured to generate, according to the radio frame and/or the location of the radio subframe, a configuration parameter used to indicate the time domain resource;
  • the second communication module is configured to configure the configuration parameter by using a second resource configuration The number is sent to the user device.
  • the device discovery resource is a time domain resource
  • the device discovery resource configuration parameter of the second access node indicates the time domain resource by indicating a location of a radio frame and/or a radio subframe;
  • the radio resource configuration module is configured to generate, according to a deviation between a radio frame and/or a radio subframe timing of the subordinate cell and a radio frame and/or a radio subframe timing of the subordinate cell of the second access node, Configuration parameters of the time domain resource;
  • the second communication module is configured to send the configuration parameter to the user equipment by using the second resource configuration
  • the device discovery resource configuration parameter of the second access node indicates the time domain resource by indicating a location of a radio frame and/or a radio subframe;
  • the radio resource configuration module is configured to generate a configuration parameter for indicating the time domain resource according to the radio frame and/or the radio subframe position;
  • the second communication module is configured to send the configuration parameter to the user equipment by using the second resource configuration.
  • the device of the present invention further provides a device discovery device, where the device includes: a first resource configuration module and a third communication module;
  • the first resource configuration module is configured to configure a device discovery resource and generate a first resource configuration for indicating that the device discovers a resource;
  • the third communication module is configured to send the first resource configuration configured by the first resource configuration module to the first access node.
  • the first resource configuration module is configured to generate a first resource configuration that includes an upper layer configuration parameter of the device discovery resource, or is configured to generate a first resource that includes a device discovery resource configuration parameter of the second access node.
  • Configuration An embodiment of the present invention provides a device discovery method and apparatus, where an access node receiving device discovers a first resource configuration, and generates a second resource configuration for indicating a device discovery resource to the UE according to the device discovery first resource configuration, and Transmitting the second resource configuration to the UE; the device discovery resource is used for device discovery by the UE for device-to-device communication; thus, not only device discovery in the cell but also mutual UE camping in different cells can be implemented. It has been found that while solving the problem of device-to-device communication in a cellular communication system, the device-to-device communication application is significantly improved.
  • FIG. 1 is a schematic structural diagram of a radio frame in the prior art
  • FIG. 2 is a schematic structural diagram of a frequency domain resource in the prior art
  • FIG. 3 is a schematic diagram of network deployment of a cellular wireless communication system in the prior art
  • FIG. 4 is a schematic diagram of a user equipment with possible D2D communication camping on different cells;
  • FIG. 5 is a schematic flowchart of a device discovery method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of network deployment with an upper layer network entity according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of network deployment for implementing device discovery between access nodes according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of time domain resource configuration according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a first device discovery device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a second device discovery device according to an embodiment of the present invention. detailed description
  • Common cellular wireless communication systems can be based on Code Division Multiplexing (CDMA), Frequency Division Multiplexing (FDMA), and Orthogonal-FDMA (OFDM) technology.
  • CDMA Code Division Multiplexing
  • FDMA Frequency Division Multiplexing
  • OFDM Orthogonal-FDMA
  • SC-FDMA Single-carrier frequency division multiple access
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • LTE-Advanced LTE-A
  • Radio resources for communication in systems based on OFDMA/SC-FDMA technology Radio resources for communication in systems based on OFDMA/SC-FDMA technology
  • each radio frame has a length of 10 ms.
  • each time slot can include 6 or 7 OFDM or SC-FDM symbols.
  • resources are divided into subcarriers.
  • the minimum unit of the frequency domain resource allocation is a resource block (RB), and one physical resource block (PRB, Physical RB) corresponding to the physical resource.
  • RB resource block
  • PRB Physical resource block
  • one PRB includes 12 in the frequency domain.
  • a resource corresponding to one subcarrier on each OFDM/SC-FDM symbol is called a resource element (RE, Resource Element, or resource element).
  • the UE In the LTE/LTE-A cellular communication, the UE discovers the LTE/LTE-A network by detecting a synchronization signal (SS, Synchronization Signal), and obtains downlink frequency and time synchronization with the access node. Moreover, since the synchronization signal carries a Physical Cell ID (PCID), detecting the synchronization signal also means that the UE discovers the LTE/LTE-A cell.
  • SS Synchronization Signal
  • PCID Physical Cell ID
  • the UE For the uplink, when the UE has uplink data transmission, it needs to initiate random access (RA, Random Access) for uplink synchronization, and initiates establishment of a radio resource control (RRC) connection to the network side, that is, from the RRC.
  • RRC radio resource control
  • the idle (Idle) state enters the RRC Connected state.
  • the UE In random access, the UE needs to send a random access preamble. (preamble), the network side implements identification of the UE and synchronization of the uplink by detecting a random access preamble in a specific time-frequency resource.
  • FIG. 3 is a schematic diagram of network deployment of a cellular wireless communication system.
  • the cellular wireless communication system shown in FIG. 3 may be a 3GPP LTE/LTE-A system, or a system based on other cellular wireless communication technologies.
  • a network device In an access network of a cellular radio communication system, a network device generally includes a certain number of base stations (also referred to as Node Bs, Node Bs, or evolved Node Bs, evolved Node Bs, eNBs, or enhanced Node Bs). Enhanced Node B, eNB ), and other network entities.
  • the base station In the 3GPP system, it may be referred to as an evolved universal terrestrial radio access network of (E-UTRAN, Evolved Universal Terrestrial Radio Access Network) 0
  • the base station also includes a low power access network node (the LPN, Low Power Node), such as a femto cell or a home base station, such as pico, or Relay, or femto, or HeNB (Home eNB).
  • the LPN Low Power Node
  • femto cell such as a femto cell or a home base station, such as pico, or Relay, or femto, or HeNB (Home eNB).
  • HeNB Home eNB
  • Each access node provides a certain wireless signal coverage.
  • the UE within the coverage can communicate wirelessly with the access node, and the wireless signal coverage area of an access node. It may be divided into one or more cells (sectors) or sectors based on the set criteria, for example, may be three cells, and each cell's wireless communication may be processed by an independent subsystem, such as an independent radio frequency.
  • a cell covered by a low-power node a cell covered by a low-power node may also be referred to as a small cell because the coverage area is much smaller than that of a cell covered by a conventional access node.
  • a radio resource for device discovery may be allocated by a base station, and a UE for D2D communication performs device discovery in the allocated radio resource.
  • the radio resources of the subordinate cells of different access nodes may be unsynchronized.
  • the unsynchronization may cause the devices of the subordinate cells of different access nodes to discover different radio resources, so that when the UE belongs to In the case of the subordinate cells of the different access nodes, the device discovery may not be implemented even if the UEs are close to each other, as shown in FIG. 4, UE1 and UE2.
  • the above-mentioned network-assisted device discovery method can only implement device discovery in a cell or a user equipment of a subordinate cell of the same access node, that is, device discovery will be subject to the coverage of the access node or the cell.
  • small cells may become a general direction for the development of LTE/LTE-A networks.
  • the coverage of the cell will be very small (several hundred meters or even tens of meters); therefore, if the range or distance discovered by the D2D device is subject to the coverage of the access node or the cell, the D2D communication will undoubtedly be made.
  • the application is very limited.
  • an embodiment of the present invention provides a device discovery method.
  • the basic idea includes: a first access node receiving device discovering a first resource configuration, and generating, according to the device, a first resource configuration, to indicate to the UE a second resource configuration of the resource, and sending the second resource configuration to the UE; the device discovery resource is used by the UE to perform device-to-device communication device discovery.
  • An embodiment of the present invention implements a device discovery method. As shown in FIG. 5, the method includes the following steps:
  • Step 101 The first access node receiving device discovers the first resource configuration.
  • the first resource configuration is sent by an upper layer network entity (Element) in a discovery area, and the first resource configuration includes an upper layer configuration parameter of the device discovery resource.
  • the upper layer network entity may be a base station controller (BSC), a Mobility Management Entity (MME), a Packet Gateway (PGW), a Service Gateway (SGW), and a multi-cell.
  • MME Mobility Management Entity
  • PGW Packet Gateway
  • SGW Service Gateway
  • MCE Multi-cell/Multicast Coordination Entity
  • a device for a D2D ProSe Server or a mobile switching device which is located above the first access node;
  • the first resource configuration is sent by the second access node, that is, the eNB3 sends the first resource configuration to the eNB4 as the second access node, where the first resource configuration includes the a device discovery resource configuration parameter of a second access node or a cell of the second access node;
  • the device discovery resource may be a time domain resource
  • the upper layer configuration parameter indicates the time domain resource by indicating a logical frame and/or a logical subframe position, and the “logic” is only used to distinguish from the wireless frame or the subframe number, indicating that the upper layer configuration parameter indicates The frame or subframe number is not a radio frame or subframe number; or,
  • the upper layer configuration parameter indicates the time domain resource by indicating a location of a radio frame and/or a radio subframe.
  • the device discovery resource configuration parameter of the second access node indicates the time domain resource by indicating a location of a radio frame and/or a radio subframe;
  • N access nodes there may be N access nodes in the discovery area, where N is an integer greater than or equal to 1; the second access node is an access node having at least one of the following features:
  • the access node configured with the device discovery resource; the communication link may be wireless communication, or X2 port communication, or fiber-optic connection communication.
  • the upper layer configuration parameter indicates, by indicating a logical frame and/or a logical subframe position, the time domain resource, or the upper layer configuration parameter indicates the time domain resource by indicating a wireless frame and/or a wireless subframe position.
  • SFN System Frame Number
  • the radio frame is configured as a device discovery logical frame or a radio frame, that is, a time domain resource in the logical frame or the radio frame, and a logical subframe in which the time domain resource is represented in the form of a bitmap in the logical frame or the radio frame.
  • the allocation period may be configurable, such as configurable as 1, or 2, or 4, or 8, 16, or 32, or 64, etc.
  • the allocation offset may Is configurable, as configurable as 0, 1, or 2, or 3, or 4, or 5, or 6, or 7, etc.; or, the allocation period can be agreed, such as the appointment of 16 Or, 32, the allocation offset may be agreed, as the agreement is 0-16, or 0-32, etc.; the allocation period and the allocation offset may take the system frame number number range Any integer value;
  • a logical sub-frame or a radio sub-frame in which the time domain resource is located in the form of a bitmap in the logical frame or the radio frame for example, a m-bit bitmap may be used to represent a sub-frame in which the time domain resource in the radio frame is located, m
  • the maximum number of subframes in a radio frame that can be configured as a time domain resource such as a value of 6 or 10; or a subframe in which a time domain resource is located in a plurality of radio frames.
  • two or four or eight or 32 radio frames are used as the basic unit.
  • the size of the bitmap corresponds to 2m, 4m, 8m, and 32m bits, respectively, and m has the same meaning as before. It should also be noted that 2, 4, 8, and 32 are examples and do not constitute a limitation;
  • the location of the time domain resource is determined by indicating only the subframe number.
  • the location of the time domain resource may be determined by indicating only the system frame number; the setting device may find that the allocation period and the allocation offset of the radio frame may be: According to the deviation of the number of the air interface radio frame/subframe of the cell to which the access node or each access node belongs, set the device to discover the allocation period and the allocation offset of the radio frame, so that the device configured by the cell to which the different access node belongs is found.
  • the time domain resources are synchronized in the air interface; for example, in FIG. 6, the upper layer network entity knows that the number offset (offset) of the air interface frames of eNB1 and eNB2 is 1 radio frame + 4 subframes, as shown in FIG.
  • the bitmap is a 10-bit bitmap with a value of 00000000.
  • the allocation period and allocation offset of the logical frame found for the setting device may be:
  • the allocation period and the allocation offset of the device discovery logical frame may be set, the device discovers the allocation period and the allocation offset of the logical frame, and is represented by a logical frame/logical subframe number, and the logical frame/logical subframe number may be adopted.
  • the air interface radio frame/subframe number of any one of the access nodes in the area may be found, and a custom logical frame/logical subframe number may also be used.
  • the upper layer network entity in FIG. 6 adopts an air interface radio frame/sub-zone of the cell to which the eNB2 belongs.
  • the frame number is a logical frame/logical subframe number
  • the first resource configuration may further include a frequency domain resource configuration parameter discovered by the device;
  • the frequency domain resource configuration parameter indicates that the device discovers a frequency domain resource by indicating a frequency domain resource block and/or a carrier (Carrier, or component carrier) index, and the device discovers the frequency domain resource for the UE to perform.
  • Device discovery to device communication Determining, by means of indicating the frequency domain resource block, that the device discovers the frequency domain resource: the allocated frequency domain resource block may be indicated by a bitmap as a device discovery resource block; or may be defined by the LTE cellular system
  • the resource allocation (RA, Resource Allocation) mode indicates that the allocated frequency domain resource block is a device discovery resource block, and the RA mode includes: RA mode 0 (type 0) or mode 1 (type 1) or mode 2 (type 2)
  • the size of the device discovery resource block such as 4 resource blocks, or 6 resource blocks, may be predefined, indicating the allocated frequency domain by using the upper layer configuration information to indicate the manner in which the device discovers the starting position of the resource block.
  • the resource block is a device discovery resource block, and the start location may also be represented by a bitmap; the manner of indicating an index of the frequency domain resource configuration indicates that the allocated frequency domain resource block is a device discovery resource block, for example, a predefined For frequency domain resource configuration for device discovery, each frequency domain resource configuration corresponds to an index.
  • the index of the allocated frequency domain resource configuration indicates that the device discovers the resource block, for example, the n RBs are the basic configuration unit of the frequency domain resource discovered by the device, and the system bandwidth or the device discovers the available resource block or the device finds that the available bandwidth is N resources. Block, then the available devices find that the basic hive has N/n rounded down (ie
  • the resource block may be indicated by the index corresponding to the LN/ ⁇ basic configuration unit, or the resource block may be indicated by the bitmap corresponding to the LN "basic configuration unit.”
  • the means for indicating that the device discovers the frequency domain resource by means of the indication of the carrier index may be: pre-allocating the carrier index of the device discovery carrier, where the carrier index may be agreed, for example: the carrier with the lowest frequency is the device discovery carrier, or the agreed frequency
  • the domain resource configuration may be applicable to each carrier or cell.
  • the first resource configuration may further include configuration information of a discovery signal resource used for device discovery, where the discovery signal resource may be a sequence, and the sequence may be a reference signal sequence. Or a synchronization signal sequence, or a preamble sequence, etc., for example, a set of discovery signal resources for device discovery is predefined in the system, and a part of the discovery signal resources in the set are allocated to the device. Current area use;
  • the discovery signal resource used for device discovery may be agreed, for example, a set of discovery signal resources for device discovery is predefined in the system, and device discovery signals in the set are all available for device discovery of D2D communication. , that is, the device discovery signal does not need to be configured.
  • Step 102 The first access node generates, according to the device discovery first resource configuration, a second resource configuration, configured to indicate, to the UE, a device discovery resource.
  • the first access node generates a second resource configuration for indicating the device discovery resource according to the upper layer configuration parameter and the wireless frame and/or the wireless subframe timing of the subordinate cell.
  • the first access node directly generates a second resource configuration for instructing the device to discover the resource according to the upper layer configuration parameter.
  • the first access node may generate a second resource configuration for indicating the device discovery resource according to the device discovery resource configuration parameter of the second access node and the radio frame and/or the radio subframe timing of the subordinate cell. ;
  • the first access node directly generates, according to the device discovery resource configuration parameter of the second access node, a second resource configuration for indicating that the device discovers the resource;
  • the step may be that the second resource configuration may be used only to indicate the configuration of the device discovery resource of the cell of the second access node; the first access node is further configured to indicate the subordinate cell The third resource configuration of the device discovery resource;
  • the third resource configuration may include a configuration parameter for indicating a device discovery time domain resource of the cell of the first access node, the configuration parameter indicating the manner by indicating a radio frame and/or a radio subframe position. Time domain resources.
  • the first access node When the upper layer configuration parameter indicates the time domain resource by indicating a logical frame and/or a logical subframe position, the first access node according to the logical frame and/or the logical subframe and the subordinate cell radio frame And a timing offset of the wireless sub-frame, generating a configuration parameter for indicating the time domain resource, and sending the configuration parameter to the UE by using a second resource configuration; or
  • the upper layer configuration parameter indicates the time domain resource by means of indicating a radio frame and/or a radio subframe position
  • the first access node When the upper layer configuration parameter indicates the time domain resource by means of indicating a radio frame and/or a radio subframe position, the first access node generates, according to the radio frame and/or the radio subframe position, And indicating a configuration parameter of the time domain resource, and sending the configuration parameter to the UE by using a second resource configuration.
  • the device discovery resource configuration parameter of the second access node indicates the time domain resource by indicating a radio frame and/or a radio subframe position
  • the first access node according to the radio frame of the subordinate cell / or wireless subframe timing and radio frame and cell of the second access node subordinate cell
  • the first access node When the device discovery resource configuration parameter of the second access node indicates the time domain resource by indicating a radio frame and/or a radio subframe position, the first access node is configured according to the radio frame and/or The wireless subframe position generates a configuration parameter used to indicate the time domain resource, and sends the configuration parameter to the UE by using the second resource configuration.
  • the above-mentioned layer configuration parameter indicates the time domain resource by way of indicating a logical frame and/or a logical subframe position, and the access node according to the air interface radio frame of the subordinate cell and/or the radio frame of the coding resource of the wireless sub-frame And/or a wireless subframe position, that is, a configuration parameter for indicating a time domain radio resource, such as a configuration parameter indicating a radio frame and/or a radio subframe position, is generated according to the upper layer configuration parameter.
  • the 6 uses the air interface radio frame and/or the subframe number of the cell of the eNB2 as the logical frame and/or the logical subframe number, and pairs the subordinate eNB with the air interface radio frame and/or the subframe number.
  • the logical frame/logical subframe number configured by the entity is the same. Therefore, after the eNB2 obtains the upper layer configuration parameter, the generated air interface configuration parameter has the same value as the upper layer configuration parameter.
  • the air interface radio frame/subframe number of the eNB1 is Logical frame of the upper layer network entity /
  • the deviation of the logical subframe number is 1 radio frame + 4 subframes, and the eNB1 generates configuration parameters for indicating time domain radio resources, such as radio frames and/or radio subframe positions, according to the upper layer configuration parameters and the offsets.
  • the deviation indicated to the eNB1 is 1 radio frame + 4 subframes, and the deviation to the eNB 2 is 0; or the eNB obtains the deviation by other means, for example, by using the eNB to synchronize with the upper layer network entity.
  • the deviation is 1 radio frame + 4 subframes, and the deviation to the eNB 2 is 0; or the eNB obtains the deviation by other means, for example, by using the eNB to synchronize with the upper layer network entity. The deviation.
  • the third resource configuration may also include a frequency domain resource configuration parameter, where the frequency domain resource configuration parameter indicates that the device discovers the frequency domain resource by indicating the allocated frequency domain resource block and/or the carrier index. The device discovers that the frequency domain resource is used for device discovery by the UE for device-to-device communication.
  • Step 103 The first access node sends the second resource configuration to the UE.
  • the UE obtains the radio resource configuration for device discovery through the second resource configuration.
  • the step of the second resource configuration is only used to indicate the configuration of the device discovery resource of the cell of the second access node, and the first access node configures the second resource and the
  • the third resource configuration is sent to the UE, and the UE obtains the device discovery radio resource configuration of the other cell and the device discovery radio resource configuration of the camped cell by using the second resource configuration and the third resource configuration, respectively.
  • the embodiment of the present invention further provides a device discovery device, where the device discovery device is located in a first access node, as shown in FIG. 9, the device includes: a first communication module 21, and a radio resource configuration module. 22. The second communication module 23; wherein
  • the first communication module 21 may be implemented by a receiver of the first access node, and configured to receive, by the device, the first resource configuration;
  • the radio resource configuration module 22 may be implemented by a processor of the first access node, configured to generate, according to the first resource configuration, a second resource configuration for indicating a device discovery resource to the UE;
  • the second communication module 23 may be implemented by a transmitter of the first access node, configured to send the second resource configuration generated by the wireless configuration module 22 to the UE;
  • the device discovery resource is used by the UE for device discovery of device to device communication.
  • the first communication module 21 is configured to receive a first resource configuration sent by an upper layer network entity, where the first resource configuration includes an upper layer configuration parameter of the device discovery resource;
  • the radio resource configuration module 22 is configured to generate, according to the upper layer configuration parameter and the radio frame and/or the radio subframe timing of the subordinate cell, a second resource configuration for indicating the device discovery resource;
  • the first communication module 21 is configured to receive a first resource configuration sent by an upper layer network entity, where the first resource configuration includes an upper layer configuration parameter of the device discovery resource;
  • the radio resource configuration module 22 is configured to generate a second resource configuration for instructing the device to discover resources according to the upper layer configuration parameter.
  • the first communication module 21 is configured to receive a first resource configuration that is sent by the second access node, where the first resource configuration includes a device discovery resource configuration parameter of the second access node;
  • the radio resource configuration module 22 is configured to generate, according to the device discovery resource configuration parameter of the second access node and the radio frame and/or the radio subframe timing of the subordinate cell, a second device for instructing the device to discover the resource.
  • the first communication module 21 is configured to receive a first resource configuration sent by the second access node, where the first resource configuration includes a device discovery resource configuration parameter of the second access node;
  • the radio resource configuration module 22 is configured to generate a second resource configuration for instructing the device to discover the resource according to the device discovery resource configuration parameter of the second access node.
  • the second resource is configured to indicate a configuration of a device discovery resource of a cell of the second access node;
  • the radio resource configuration module 22 is configured to indicate a third resource configuration for discovering resources of the subordinate cell device
  • the second communication module 23 is configured to send the second resource configuration and the third resource configuration to the UE.
  • the device discovery resource is a time domain resource
  • the upper layer configuration parameter indicates the time domain resource by indicating a logical frame and/or a logical subframe position
  • the radio resource configuration module 22 is configured to generate a configuration parameter for indicating the time domain resource according to a timing offset between the logical frame and/or the logical sub-frame and the subordinate cell radio frame and/or the radio sub-frame;
  • the second communication module 23 is configured to send the configuration parameter to the UE by using a second resource configuration
  • the upper layer configuration parameter indicates the time domain resource by indicating a location of a radio frame and/or a radio subframe
  • the radio resource configuration module 22 is configured to generate, according to the radio frame and/or the location of the radio subframe, a configuration parameter used to indicate the time domain resource;
  • the second communication module 23 is configured to send the configuration parameter to the UE by using the second resource configuration.
  • the device discovery resource configuration parameter of the second access node indicates the time domain resource by indicating a location of a radio frame and/or a radio subframe;
  • the radio resource configuration module 22 is configured to generate, according to a deviation between a radio frame and/or a radio subframe timing of the subordinate cell and a radio frame and/or a radio subframe timing of the subordinate cell of the second access node, Determining configuration parameters of the time domain resource;
  • the second communication module 23 is configured to send the configuration parameter to the UE by using a second resource configuration; or
  • the device discovery resource configuration parameter of the second access node indicates the time domain resource by indicating a location of a radio frame and/or a radio subframe;
  • the radio resource configuration module 22 is configured to generate, according to the radio frame and/or the radio subframe location, a configuration parameter used to indicate the time domain resource;
  • the second communication module 23 is configured to send the configuration parameter to the UE by using the second resource configuration.
  • the embodiment of the present invention further provides a device discovery device, where the device may be disposed in an upper layer network entity or the second access node.
  • the device includes: a first resource configuration module 24 And a third communication module 25; wherein
  • the first resource configuration module 24 may be implemented by an upper layer network entity or a processor of the second access node, configured to configure a device discovery resource and generate a first resource configuration for instructing the device to discover resources;
  • the third communication module 25 may be implemented by a transmitter of an upper layer network entity or a second access node, and configured to send the first resource configuration configured by the first resource configuration module 24 to the first access node;
  • the first resource configuration module 24 is configured to generate a first resource configuration that includes an upper layer configuration parameter of the device discovery resource, or is configured to generate a first resource configuration that includes a device discovery resource configuration parameter of the second access node.
  • the first access node of the first access node discovers the first resource configuration, and generates a second resource configuration for indicating the device discovery resource to the UE, which not only enables device discovery in the cell, but also implements camping.
  • the mutual discovery of UEs in different cells significantly improves the extensiveness of device-to-device communication applications while solving the problem of device-to-device communication in cell communication systems.

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

Abstract

L'invention concerne un procédé de découverte de dispositif, dans lequel: un premier noeud d'accès reçoit une première configuration de ressource pour la découverte de dispositif, génère une seconde configuration de ressource servant à indiquer une ressource de découverte de dispositif à un équipement utilisateur (UE) selon la première configuration de ressource de découverte de dispositif, et envoie la seconde configuration de ressource à l'équipement utilisateur. La ressource de découverte de dispositif est utilisée pour que l'UE effectue une découverte de dispositif dans une communication D2D (de dispositif à dispositif). Cette invention se rapporte également à un appareil de découverte de dispositif. Au moyen de la solution de la présente invention, non seulement la découverte de dispositif dans une cellule peut être réalisée, mais la découverte mutuelle des UE résidant dans des cellules différentes, peut également être réalisée, ce qui permet d'améliorer significativement le caractère universel de l'application de communication de dispositif à dispositif, tout en résolvant le problème de découverte de dispositif de la communication de dispositif à dispositif dans un système de communication cellulaire.
PCT/CN2014/072167 2013-02-18 2014-02-17 Procédé et appareil de découverte de dispositif WO2014124610A1 (fr)

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