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WO2015135431A1 - Procédé de sélection de groupe de ressources de transmission d2d et équipement d'utilisateur de transmission d2d - Google Patents

Procédé de sélection de groupe de ressources de transmission d2d et équipement d'utilisateur de transmission d2d Download PDF

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Publication number
WO2015135431A1
WO2015135431A1 PCT/CN2015/073606 CN2015073606W WO2015135431A1 WO 2015135431 A1 WO2015135431 A1 WO 2015135431A1 CN 2015073606 W CN2015073606 W CN 2015073606W WO 2015135431 A1 WO2015135431 A1 WO 2015135431A1
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Prior art keywords
cell
priority
reference signal
signal strength
relay
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Chinese (zh)
Inventor
赵亚利
曾二林
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present application relates to the field of wireless communications technologies, and in particular, to a method for selecting a D2D transmission resource pool and a D2D transmitting UE.
  • the communication adopts the centralized control mode of the network, that is, the uplink and downlink data of the User Equipment (UE) are transmitted and received under the control of the network.
  • the communication between the UE and the UE is forwarded and controlled by the network.
  • the data transmission between the UE and the network can be referred to as D2N (Device to Network, device). To the network) transmission.
  • D2N Device to Network, device
  • D2D proximity services include the following two categories:
  • the UE uses E-UTRA to confirm that another UE is nearby. For example, a user can use the D2D UE to use the service to find nearby taxis, find friends nearby, and the like.
  • D2D Communication By directly establishing a link between two mutually close UEs, the communication link originally transmitted through the network is converted into a local direct communication link, thereby saving a large amount of bandwidth and network efficiency; Or two UEs that are close to each other can use direct link communication to obtain stable high-speed and low-cost communication services.
  • Proximity service communication is generally performed under the control or assistance of the network side, and the eNB (Evolved Base Station) may even dynamically allocate resources for the UE performing the proximity service communication.
  • D2D link refers to the link between the device and the device for direct communication
  • D2N link A link between a device and a network node for communication.
  • UEs participating in D2D Discovery/Communication are divided into two roles:
  • D2D transmitting UE a UE that transmits a D2D Discovery/Communication message
  • the D2D receives the UE: that is, the UE that receives the D2D Discovery/Communication message sent by the D2D transmitting UE.
  • 3GPP For D2D Discovery, 3GPP currently defines two types of resource allocation:
  • Type 1 that is, the D2D sending UE selects one in a D2D Discovery sending resource pool by itself.
  • the resource sends a D2D Discovery message
  • Type 2 The D2D transmitting UE performs D2D Discovery message transmission on the resources allocated by the network. According to the D2D Discovery message allocated by the network, whether the resource is dynamic or semi-static, Type 2 can be divided into Type 2A and Type 2B resource allocation types. For Type 2A, the network dynamically allocates resources used by the D2D Discovery message transmission for the D2D. For Type 2B, the network sends the UE semi-statically allocated resources for D2D Discovery message transmission for the D2D.
  • D2D Discovery resource allocation type For a UE in the D2N idle (IDLE) state, since it does not establish an RRC connection with the base station, when the IDLE UE transmits the UE as a D2D, its D2D Discovery resource allocation type can only select Type1.
  • 3GPP For D2D Communication, 3GPP currently defines two types of resource allocation:
  • Mode 1 that is, the network scheduling D2D sends the resources used by the UE for D2D transmission.
  • Mode 2 The D2D transmitting UE selects a resource in the D2D Communication transmission resource pool to transmit the D2D Communication message.
  • the D2D Communication resource allocation type can only select Mode2.
  • the resource allocation type of D2D Discovery/Communication is controlled by the network.
  • the resource allocation type of the D2D Discovery/Communication cannot be controlled by the network.
  • the resource allocation type of the D2D transmitting UE can only be selected by Type1; for the D2D Communication scenario, The resource allocation type of the D2D transmitting UE can only select Mode2.
  • it may receive the D2D transmission resource pool of the serving cell and the D2D transmission resource pool of the neighboring cell at the same time, and even receive the D2D transmission resource pool forwarded by the relay UE. In this case, it is necessary to consider how the D2D transmitting UE performs D2D transmission resource pool selection.
  • the D2D transmission resource pool refers to the D2D Discovery transmission resource pool.
  • the D2D transmission resource pool refers to the D2D Communication transmission resource pool.
  • the purpose of the application is to provide a method for selecting a D2D transmission resource pool and a D2D transmission UE to solve the problem of how to select from multiple D2D transmission resource pools.
  • a method for selecting a D2D transmission resource pool includes:
  • the D2D transmitting UE selects a target source according to a reference signal strength of the source corresponding to the D2D transmission resource pool and/or a priority of the source;
  • the D2D transmitting UE selects a corresponding D2D transmission resource pool according to the reference signal strength and/or priority of the target source.
  • the embodiment of the present application provides a selection scheme of a D2D transmission resource pool.
  • the selection is based on the reference signal strength of the source and/or the priority of the source, etc., to ensure that the D2D transmitting UE can select a suitable D2D transmission resource pool for transmitting the D2D Discovery/Communication message when moving.
  • the source of the D2D transmission resource pool may be, but is not limited to, a camping cell, a neighboring cell, and a relay of the D2D transmitting UE.
  • the relay may be, but is not limited to, a relay node in the cellular network, or may be a relay UE.
  • the priority of the source may be pre-configured, or may be sent by the D2D transmitting UE to the D2D transmitting UE by means of broadcast or the like.
  • Resident cell neighbor cell > trunk, or,
  • the priority is the same as the priority of the neighboring cell.
  • the reference signal of the source may be a specific signal, which can reflect the channel quality of the source, such as a cell reference signal (CRS) of the D2N network, and the like.
  • CRS cell reference signal
  • the preferred embodiment of selecting a target source is exemplified by taking a detectable source as a camping cell and a neighboring cell as an example.
  • the D2D transmitting UE determines whether the reference signal strength of the neighboring cell satisfies the first predetermined condition
  • the D2D transmitting UE selects the neighboring cell as the target source
  • the D2D transmitting UE selects the camping cell as the target source.
  • the satisfying the first predetermined condition is that the reference signal strength is greater than the reference signal strength of the camping cell, and the duration of the difference greater than the second threshold is greater than the first time threshold.
  • the value of the first time threshold is determined according to actual application requirements. In an extreme case, the value of the first time threshold may be 0.
  • the value of the second threshold is determined according to actual application requirements.
  • the second threshold value is a signal strength offset value corresponding to the D2D resource selection.
  • the neighboring cell with the highest reference signal strength may be selected as the target source, or one neighboring cell may be randomly selected as the target source, and other sources may be selected.
  • the rule selects a neighboring cell as the target source.
  • the D2D sending UE determines whether the reference signal strength of the camped cell is greater than a first threshold
  • the D2D transmitting UE selects the camping cell as the target source
  • the D2D transmitting UE selects the target source in the manner described above.
  • the value of the first threshold is determined according to actual application requirements.
  • the D2D transmitting UE selects the source with the highest priority as the target source according to the priority of the source corresponding to the D2D sending resource pool.
  • the source with the highest priority can be randomly selected as the target source, and the source with the highest reference signal strength can be selected as the target source.
  • the D2D sending UE determines whether the priority of the camped cell is greater than the priority of the neighboring cell
  • the D2D transmitting UE determines whether there is a neighboring cell whose reference signal strength satisfies the second predetermined condition, and if so, selects a neighboring cell whose reference signal strength satisfies the second predetermined condition as a target Source, otherwise, select the resident cell as the target source;
  • the D2D transmitting UE determines whether there is a neighboring cell whose reference signal strength satisfies the third predetermined condition, and if so, selects a neighboring cell whose reference signal strength satisfies the third predetermined condition Target source, otherwise, the camped cell is selected as the target source.
  • satisfying the second predetermined condition means that the reference signal strength is greater than the reference signal strength of the camping cell, and the duration of the difference greater than the third threshold exceeds the second time threshold.
  • satisfying the third predetermined condition means that the reference signal strength is greater than the reference signal strength of the camped cell, and the duration of the difference greater than the fourth threshold exceeds the third time threshold.
  • the values of the second time threshold and the third time threshold are determined according to actual application requirements. In an extreme case, the value of the second time threshold may be 0, and the value of the third time threshold may also be 0.
  • the values of the third threshold and the fourth threshold are determined according to actual application requirements.
  • the third threshold may be set to be greater than the fourth threshold.
  • the neighboring cell with the highest reference signal strength may be selected as the target source.
  • a neighboring cell can be randomly selected as the target source, and one neighboring cell can be selected as the target source according to other rules.
  • the neighboring cell with the highest reference signal strength may be selected as the target source.
  • a neighboring cell may be randomly selected as the target source, and one neighboring cell may be selected as the target source according to other rules.
  • the D2D sending UE determines whether the reference signal strength of the camped cell is greater than a first threshold
  • the D2D transmitting UE selects the camping cell as the target source
  • the D2D transmitting UE selects the target source according to the above manner.
  • the implementation manner of selecting the target source can refer to the selection manner of each target source, and details are not described herein again.
  • the implementation manner of selecting the target source may refer to the selection manner of each target source, and no longer Narration.
  • the source that can be detected is a camping cell, a neighboring cell, and a relay, and the priority of the neighboring cell is greater than the priority of the relay.
  • the reference signal strength is greater than the relay of the fifth threshold whose duration exceeds the fourth time threshold, if any, the relay is selected as the target source, otherwise, the camped cell is selected as the target source; If the priority of the cell is not greater than the priority of the neighboring cell, if no neighboring cell meets the foregoing conditions, it is determined whether the reference signal strength of the relay is greater than the reference signal strength of the camping cell by a duration greater than the sixth threshold.
  • the relay exceeding the fifth time threshold if any, selects the relay as the target source, otherwise, selects the camped cell as the target source. You can also refer to the above method 5 when selecting the target source.
  • the source that can be detected is a camping cell, a neighboring cell, and a relay, and the priority of the relay is greater than the priority of the neighboring cell.
  • the target source you can refer to the above methods one to three.
  • the camped cell is selected as the target source only when the relay and the neighboring cell do not satisfy the predetermined condition; when the priority of the camped cell is not greater than the priority of the relay, the relay and the neighbor are sequentially determined. Whether the cell satisfies the predetermined condition, if a relay meets the predetermined condition, the relay is preferentially selected as the target source, and the camped cell is selected as the target source only when neither the relay nor the neighboring cell meets the predetermined condition. Before determining whether the priority of the camping cell is greater than the priority of the relay, it may also be determined whether the reference signal strength of the camped cell is greater than the first threshold, and if the threshold is greater than the first threshold, the camped cell is selected as the target. Source, otherwise determine whether the priority of the camped cell is greater than the priority of the relay, and select the target source according to the above process.
  • the embodiment of the present application further provides a D2D sending UE, including:
  • a target source selection module configured to select a target source according to a reference signal strength of the source corresponding to the D2D transmission resource pool and/or a priority of the source;
  • the resource pool selection module is configured to select a corresponding D2D transmission resource pool according to the reference signal strength and/or priority of the target source.
  • the embodiment of the present application provides a selection scheme of a D2D transmission resource pool.
  • the selection is based on the reference signal strength of the source and/or the priority of the source, etc., to ensure that the D2D transmitting UE can select a suitable D2D transmission resource pool for transmitting the D2D Discovery/Communication message when moving.
  • the target source selection module is used to:
  • the reference signal strength of the neighboring cell or the relay satisfies the first predetermined condition, and satisfying the first predetermined condition is: the reference signal strength is greater than the reference signal strength of the camped cell, and the difference is greater than the duration of the second threshold Exceeding the first time threshold;
  • the neighboring cell or the relay is selected as the target source
  • the camped cell is selected as the target source.
  • the second threshold value is a signal strength offset value corresponding to the D2D resource selection.
  • the target source selection module is configured to:
  • the camping cell is selected as the target source
  • the reference signal strength of the camping cell is less than or equal to the first threshold, determine whether there is a neighboring cell or a reference of the relay The test signal strength satisfies the first predetermined condition.
  • the target source selection module is configured to:
  • the source with the highest priority is selected as the target source.
  • the source includes: a camping cell, a neighboring cell, and a relay.
  • the priority of the source is pre-configured or camped on the cell broadcast.
  • the priority of the camping cell is greater than the priority of the neighboring cell, and the priority of the neighboring cell is greater than the priority of the relay; or the priority of the camping cell is equal to the priority of the neighboring cell, which is greater than the priority of the relay.
  • the priority of the camping cell, the neighboring cell, and the relay is the same.
  • the target source selection module is configured to:
  • the priority of the camping cell is greater than the priority of the neighboring cell and the relay, determining whether there is a neighboring cell or a relay whose reference signal strength satisfies the second predetermined condition, and if so, selecting a neighbor whose reference signal strength satisfies the second predetermined condition
  • the cell or the relay is used as the target source. Otherwise, the camped cell is selected as the target source.
  • the second predetermined condition is that the reference signal strength is greater than the reference signal strength of the camped cell, and the difference is greater than the third threshold. The duration exceeds the second time threshold.
  • the priority of the camping cell is less than or equal to the priority of the neighboring cell or the relay, determine whether there is a neighboring cell or a relay whose reference signal strength satisfies the third preset condition, and if so, select the reference signal strength to satisfy the third pre- The conditional neighbor cell or relay is used as the target source, otherwise, the camped cell is selected as the target source. Satisfying the third preset condition means that the reference signal strength is greater than the reference signal strength of the camping cell, and the duration of the difference greater than the fourth threshold exceeds the third time threshold.
  • the third threshold is greater than the fourth threshold.
  • the target source selection module is configured to:
  • the priority of the camping cell is greater than the priority of the neighboring cell and the relay.
  • the reference signal of the source comprises: a cell reference signal.
  • the embodiment of the present application further provides a D2D transmitting UE, including a processor and a memory.
  • the processor is configured to execute a computer program having the following functions: transmitting a source corresponding to the resource pool according to the D2D Selecting a target source according to a reference signal strength and/or a priority of the source; selecting a corresponding D2D transmission resource pool according to a reference signal strength and/or priority of the target source;
  • the memory is configured to store code for the above computer program.
  • the embodiment of the present application provides a selection scheme of a D2D transmission resource pool.
  • the selection is based on the reference signal strength of the source and/or the priority of the source, etc., to ensure that the D2D transmitting UE can select a suitable D2D transmission resource pool for transmitting the D2D Discovery/Communication message when moving.
  • FIG. 1 is a flowchart of a method provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of a D2D transmitting UE according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of another D2D transmitting UE according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of another D2D transmitting UE according to an embodiment of the present application.
  • the D2D transmitting UE determines which D2D to use according to the reference signal strength and/or priority corresponding to multiple D2D transmission resource pools that can be detected by the UE. Resource pool.
  • the method for selecting a D2D transmission resource pool includes the following operations:
  • Step 100 The D2D sending UE selects a target source according to a reference signal strength of the source corresponding to the D2D transmission resource pool and/or a priority of the source.
  • Step 110 The D2D transmitting UE selects a corresponding D2D transmission resource pool according to a reference signal strength and/or a priority of the target source.
  • the D2D transmitting UE selects one of multiple resource pools of the target source according to signal strength and/or priority.
  • the embodiment of the present application provides a selection scheme of a D2D transmission resource pool.
  • the selection is based on the reference signal strength of the source and/or the priority of the source, etc., to ensure that the D2D transmitting UE can select a suitable D2D transmission resource pool for transmitting the D2D Discovery/Communication message when moving.
  • the source of the D2D transmission resource pool may be, but is not limited to, a camping cell, a neighboring cell, and a relay of the D2D transmitting UE.
  • the relay may be, but is not limited to, a relay node in the cellular network, or may be a relay UE.
  • the priority of the source may be pre-configured, or may be a camped cell of the D2D transmitting UE by broadcasting or the like.
  • the mode is sent to the D2D to send the UE.
  • Resident cell neighbor cell > trunk, or,
  • the priority is the same as the priority of the neighboring cell.
  • the reference signal of the source may be a specific signal, which can reflect the channel quality of the source, such as a CRS (Cell-specific Reference Signal) of the D2N network.
  • CRS Cell-specific Reference Signal
  • the reference signal strength may be, but is not limited to, RSRP (Reference Signal Receiving Power) of the reference signal, or RSRQ (Reference Signal Receiving Quality).
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • the preferred embodiment of selecting a target source is exemplified by taking a detectable source as a camping cell and a neighboring cell as an example.
  • the D2D transmitting UE determines whether the reference signal strength of the neighboring cell satisfies the first predetermined condition; if the reference signal strength of the neighboring cell satisfies the first predetermined condition, the D2D transmitting UE selects the neighboring cell as the target source; if there is no reference of the neighboring cell The signal strength satisfies the first predetermined condition, and the D2D transmitting UE selects the camping cell as the target source.
  • satisfying the first predetermined condition means that the reference signal strength is greater than the reference signal strength of the camping cell, and the duration of the difference greater than the second threshold exceeds the first time threshold.
  • the value of the first time threshold is determined according to actual application requirements. In an extreme case, the value of the first time threshold may be 0.
  • the value of the second threshold is determined according to actual application requirements.
  • the second threshold value is a signal strength offset value corresponding to the D2D resource selection.
  • the neighboring cell with the highest reference signal strength may be selected as the target source, or one neighboring cell may be randomly selected as the target source, and other sources may be selected.
  • the rule selects a neighboring cell as the target source.
  • the D2D transmitting UE (hereinafter referred to as the UE) in the D2N IDLE state resides in the cell A (Cell A), and the D2D Discovery sending resource pool is selected as follows:
  • the UE performs the neighbor cell measurement, which may be, but is not limited to, determining the CRS, synchronization signal, etc. of the neighboring cell.
  • a neighboring cell such as Cell B, is detected.
  • the CRS signal strength of the D2N link of Cell A be S Serving_cell
  • the CRS signal strength of the D2N link of the neighboring cell Cell B be S neighbour_cell_B
  • the offset is the signal strength offset value corresponding to the D2D resource selection
  • the D2D sending UE determines whether the reference signal strength of the camped cell is greater than a first threshold
  • the D2D transmitting UE selects the camping cell as the target source
  • the D2D transmitting UE selects the target source in the manner described above.
  • the value of the first threshold is determined according to actual application requirements.
  • the D2D transmitting UE (hereinafter referred to as the UE) in the D2N IDLE state resides in the cell A (Cell A), and the D2D Dicovery sending resource pool is selected as follows:
  • the UE If the D2N link CRS signal strength (RSRP or RSRQ) of the Cell A is greater than the first threshold, the UE does not perform neighbor cell measurement, and selects to use the D2D Dicovery transmission resource pool corresponding to Cell A. When the D2D Dicovery message needs to be sent, the UE selects a resource from the D2D Dicovery transmission resource pool broadcasted by the Cell A to transmit.
  • RSRP RSRP or RSRQ
  • the UE With the movement of the UE, when the D2N link CRS signal strength of the Cell A is less than or equal to the first threshold, the UE performs the neighbor cell measurement, which may be, but is not limited to, detecting the CRS, the synchronization signal, etc. of the neighboring cell. Go to a neighboring cell, such as Cell B.
  • the CRS signal strength of the D2N link of Cell A be SServing_cell
  • the CRS signal strength of the D2N link of the neighboring cell Cell B be S neighbour_cell_B
  • the offset is the signal strength offset value corresponding to the D2D resource selection
  • the D2D transmitting UE selects the source with the highest priority as the target source according to the priority of the source corresponding to the D2D sending resource pool.
  • the source with the highest priority can be randomly selected as the target source, and the source with the highest reference signal strength can be selected as the target source.
  • the D2D transmitting UE (hereinafter referred to as UE) in the D2N IDLE state resides in the cell A (Cell A), and the D2D Dicovery sending resource pool is selected as follows:
  • the UE If the CRS strength of the D2N link of the Cell A is higher than the first threshold, the UE does not perform the neighbor cell measurement, and when the D2D Discovery message needs to be sent, the UE selects the resource from the D2D Discovery transmission resource pool broadcasted by the Cell A. .
  • the UE As the UE moves, when the D2N link CRS signal strength of Cell A is lower than the first threshold, the UE starts performing detection of other synchronization signals. It is assumed that a synchronization signal of a relay is detected.
  • the UE preferentially selects the D2D Discovery sending resource pool of the camping cell;
  • the UE may randomly select a D2D Discovery transmission resource pool of one of the sources.
  • the D2D sending UE determines whether the priority of the camped cell is greater than the priority of the neighboring cell
  • the D2D transmitting UE determines whether there is a neighboring cell whose reference signal strength satisfies the second predetermined condition, and if so, selects a neighboring cell whose reference signal strength satisfies the second predetermined condition as a target Source, otherwise, select the resident cell as the target source;
  • the D2D transmitting UE determines whether there is a neighboring cell whose reference signal strength satisfies the third predetermined condition, and if so, selects a neighboring cell whose reference signal strength satisfies the third predetermined condition Target source, otherwise, the camped cell is selected as the target source.
  • Satisfying the second predetermined condition means that the reference signal strength is greater than the reference signal strength of the camping cell, and the duration of the difference greater than the third threshold exceeds the second time threshold.
  • Satisfying the third predetermined condition means that the reference signal strength is greater than the reference signal strength of the camping cell, and the duration of the difference greater than the fourth threshold exceeds the third time threshold.
  • the values of the second time threshold and the third time threshold are determined according to actual application requirements. In an extreme case, the value of the second time threshold may be 0, and the value of the third time threshold may also be 0.
  • the values of the third threshold and the fourth threshold are determined according to actual application requirements.
  • the third threshold may be set to be greater than the fourth threshold.
  • the neighboring cell may also randomly select one neighboring cell as the target source, and may also select one neighboring cell as the target source according to other rules.
  • the reference signal strength of the plurality of neighboring cells is greater than the fourth threshold value, the reference signal strength may be selected therefrom.
  • the largest neighboring cell is used as the target source, and a neighboring cell can be randomly selected as the target source, and one neighboring cell can be selected as the target source according to other rules.
  • the D2D transmitting UE (hereinafter referred to as the UE) in the D2N IDLE state resides in the cell A (Cell A), and the D2D Discovery sending resource pool is selected as follows:
  • the UE performs neighbor cell measurement, which may be, but is not limited to, detecting a neighboring cell, such as Cell B, when detecting a CRS, a synchronization signal, or the like of the neighboring cell.
  • the UE determines, according to the obtained priority information, whether the priority of the Cell A is greater than the priority of the Cell B.
  • the priority of Cell A is greater than the priority of Cell B, only the CRS signal strength of the D2N link of Cell B is greater than the third threshold of the D2N link CRS signal strength of Cell A, and the duration exceeds the second time.
  • the threshold is set, the D2D Discovery of the Cell B is selected to send the resource pool. In other cases, the D2D Discovery of the Cell A is used to send the resource pool.
  • the priority of Cell A is equal to the priority of Cell B, only the reference signal strength needs to be considered, that is, the D2N link CRS signal strength of Cell B is greater than the fourth threshold of the D2N link CRS signal strength of Cell A, and continues.
  • the D2D Discovery of Cell B is selected to send the resource pool. In other cases, the D2D Discovery of Cell A is sent to the resource pool.
  • the third threshold is greater than the fourth threshold.
  • the fourth threshold value is the same as the second threshold value
  • the third time threshold is the same as the first time threshold
  • the D2D sending UE determines whether the reference signal strength of the camped cell is greater than a first threshold
  • the D2D transmitting UE selects the camping cell as the target source
  • the D2D transmitting UE selects the target source according to the above manner.
  • the D2D transmitting UE (hereinafter referred to as the UE) in the D2N IDLE state resides in the cell A (Cell A), and the implementation manner of selecting the D2D Dicovery sending resource pool according to the above manner is as follows:
  • the UE If the D2N link CRS signal strength (RSRP or RSRQ) of the Cell A is greater than the first threshold, the UE does not perform neighbor cell measurement, and selects to use the D2D Dicovery transmission resource pool corresponding to Cell A. When the D2D Dicovery message needs to be sent, the UE selects a resource from the D2D Dicovery transmission resource pool broadcasted by the Cell A to transmit.
  • RSRP RSRP or RSRQ
  • the UE With the movement of the UE, when the D2N link CRS signal strength of the Cell A is less than or equal to the first threshold, the UE performs the neighbor cell measurement, which may be, but is not limited to, detecting the CRS, the synchronization signal, etc. of the neighboring cell. Go to a neighboring cell, such as Cell B.
  • the UE determines, according to the obtained priority information, whether the priority of the Cell A is greater than the priority of the Cell B.
  • the priority of Cell A is greater than the priority of Cell B, only the CRS signal strength of the D2N link of Cell B is greater than the third threshold of the D2N link CRS signal strength of Cell A, and the duration exceeds the second time.
  • the threshold is set, the D2D Discovery of the Cell B is selected to send the resource pool. In other cases, the D2D Discovery of the Cell A is used to send the resource pool.
  • the priority of Cell A is equal to the priority of Cell B, only the reference signal strength needs to be considered, that is, the D2N link CRS signal strength of Cell B is greater than the fourth threshold of the D2N link CRS signal strength of Cell A, and continues.
  • the D2D Discovery of Cell B is selected to send the resource pool. In other cases, the D2D Discovery of Cell A is sent to the resource pool.
  • the third threshold is greater than the fourth threshold.
  • the fourth threshold value is the same as the second threshold value
  • the third time threshold is the same as the first time threshold
  • the implementation manner of selecting the target source can refer to the selection manner of each target source, and details are not described herein again.
  • the source that can be detected is a camping cell, a neighboring cell, and a relay, and the neighboring cell and the relay have the same priority.
  • the implementation method of selecting the target source refer to the selection method of each target source mentioned above, and details are not described herein again.
  • the source that can be detected is a camping cell, a neighboring cell, and a relay, and the priority of the neighboring cell is greater than the priority of the relay.
  • the reference signal strength is greater than the relay of the fifth threshold whose duration exceeds the fourth time threshold, if any, the relay is selected as the target source, otherwise, the camped cell is selected as the target source; If the priority of the cell is not greater than the priority of the neighboring cell, if no neighboring cell meets the foregoing conditions, it is determined whether the reference signal strength of the relay is greater than the reference signal strength of the camping cell by a duration greater than the sixth threshold.
  • the relay exceeding the fifth time threshold if any, selects the relay as the target source, otherwise, selects the camped cell as the target source. You can also refer to the above method 5 when selecting the target source.
  • the source that can be detected is a camping cell, a neighboring cell, and a relay, and the priority of the relay is greater than the priority of the neighboring cell.
  • the priority of the camped cell may be determined to be greater than the priority of the relay.
  • the relay and the neighboring cell are sequentially determined to meet the predetermined condition.
  • the relay is preferentially selected as the target source, and the camped cell is selected as the target source only when the relay and the neighboring cell do not satisfy the predetermined condition; the priority of the camped cell is not greater than When the priority is followed, it is sequentially determined whether the relay and the neighboring cell satisfy the predetermined condition. If the relay meets the predetermined condition, the relay is preferentially selected as the target source, and only when the relay and the neighboring cell do not satisfy the predetermined condition, The camped cell is used as the target source.
  • the camped cell Before determining whether the priority of the camping cell is greater than the priority of the relay, it may also be determined whether the reference signal strength of the camped cell is greater than the first threshold, and if the threshold is greater than the first threshold, the camped cell is selected as the target. Source, otherwise determine whether the priority of the camped cell is greater than the priority of the relay, and select the target source according to the above process.
  • the embodiment of the present application further provides a D2D transmitting UE, as shown in FIG. 2, including:
  • the target source selection module 201 is configured to select a target source according to a reference signal strength of the source corresponding to the D2D transmission resource pool and/or a priority of the source;
  • the resource pool selection module 202 is configured to select a corresponding D2D transmission resource pool according to the reference signal strength and/or priority of the target source.
  • the embodiment of the present application provides a selection scheme of a D2D transmission resource pool.
  • the selection is based on the reference signal strength of the source and/or the priority of the source, etc., to ensure that the D2D transmitting UE can select a suitable D2D transmission resource pool for transmitting the D2D Discovery/Communication message when moving.
  • the target source selection module 201 is configured to:
  • the reference signal strength of the neighboring cell or the relay satisfies the first predetermined condition, and satisfying the first predetermined condition is: the reference signal strength is greater than the reference signal strength of the camped cell, and the difference is greater than the duration of the second threshold Exceeding the first time threshold;
  • the neighboring cell or the relay is selected as the target source
  • the camped cell is selected as the target source.
  • the second threshold value is a signal strength offset value corresponding to the D2D resource selection.
  • the target source selection module 201 is configured to:
  • the camping cell is selected as the target source
  • the reference signal strength of the camping cell is less than or equal to the first threshold, it is determined whether the reference signal strength of the neighboring cell or the relay satisfies the first predetermined condition.
  • the target source selection module 201 is configured to:
  • the source with the highest priority is selected as the target source.
  • the source includes: a camping cell, a neighboring cell, and a relay.
  • the priority of the source is pre-configured or camped on the cell broadcast.
  • the priority of the camping cell is greater than the priority of the neighboring cell, and the priority of the neighboring cell is greater than the priority of the relay; or the priority of the camping cell is equal to the priority of the neighboring cell, which is greater than the priority of the relay.
  • the priority of the camping cell, the neighboring cell, and the relay is the same.
  • the target source selection module 201 is configured to:
  • the priority of the camping cell is greater than the priority of the neighboring cell and the relay, determining whether there is a neighboring cell or a relay whose reference signal strength satisfies the second predetermined condition, and if so, selecting a neighbor whose reference signal strength satisfies the second predetermined condition
  • the cell or the relay is used as the target source. Otherwise, the camped cell is selected as the target source.
  • the second predetermined condition is that the reference signal strength is greater than the reference signal strength of the camped cell, and the difference is greater than the third threshold. The duration exceeds the second time threshold.
  • the priority of the camping cell is less than or equal to the priority of the neighboring cell or the relay, determine whether there is a neighboring cell or a relay whose reference signal strength satisfies the third preset condition, and if so, select the reference signal strength to satisfy the third pre- The conditional neighbor cell or relay is used as the target source, otherwise, the camped cell is selected as the target source. Satisfying the third preset condition means that The reference signal strength is greater than the reference signal strength of the camping cell, and the duration of the difference greater than the fourth threshold exceeds a third time threshold.
  • the third threshold is greater than the fourth threshold.
  • the target source selecting module 201 is configured to:
  • the priority of the camping cell is greater than the priority of the neighboring cell and the relay.
  • the reference signal of the source comprises: a cell reference signal.
  • the embodiment of the present application further provides a D2D transmitting UE, as shown in FIG. 3, including a processor 301 and a memory 302.
  • the processor 301 is configured to execute a computer program having the following functions: selecting a target source according to a reference signal strength of the source corresponding to the D2D transmission resource pool and/or a priority of the source; and determining a reference signal strength according to the target source / or priority to select the corresponding D2D transmission resource pool;
  • the memory 302 is configured to store code of the above computer program.
  • the embodiment of the present application further provides a D2D transmitting UE, as shown in FIG.
  • the processor 401 is configured to read a program in the memory 404 and perform the following process:
  • the transceiver 402 is configured to receive and transmit data under the control of the processor 401.
  • the embodiment of the present application provides a selection scheme of a D2D transmission resource pool.
  • the selection is based on the reference signal strength of the source and/or the priority of the source, etc., to ensure that the D2D transmitting UE can select a suitable D2D transmission resource pool for transmitting the D2D Discovery/Communication message when moving.
  • the processor 401 is configured to:
  • the reference signal strength of the neighboring cell or the relay satisfies the first predetermined condition, and satisfying the first predetermined condition is: the reference signal strength is greater than the reference signal strength of the camped cell, and the difference is greater than the duration of the second threshold Exceeding the first time threshold;
  • the neighboring cell or the relay is selected as the target source
  • the camped cell is selected as the target message. source.
  • the second threshold value is a signal strength offset value corresponding to the D2D resource selection.
  • the processor 401 is configured to:
  • the camping cell is selected as the target source
  • the reference signal strength of the camping cell is less than or equal to the first threshold, it is determined whether the reference signal strength of the neighboring cell or the relay satisfies the first predetermined condition.
  • the processor 401 is configured to:
  • the source with the highest priority is selected as the target source.
  • the source includes: a camping cell, a neighboring cell, and a relay.
  • the priority of the source is pre-configured or camped on the cell broadcast.
  • the priority of the camping cell is greater than the priority of the neighboring cell, and the priority of the neighboring cell is greater than the priority of the relay; or the priority of the camping cell is equal to the priority of the neighboring cell, which is greater than the priority of the relay.
  • the priority of the camping cell, the neighboring cell, and the relay is the same.
  • the processor 401 is configured to:
  • the priority of the camping cell is greater than the priority of the neighboring cell and the relay, determining whether there is a neighboring cell or a relay whose reference signal strength satisfies the second predetermined condition, and if so, selecting a neighbor whose reference signal strength satisfies the second predetermined condition
  • the cell or the relay is used as the target source. Otherwise, the camped cell is selected as the target source.
  • the second predetermined condition is that the reference signal strength is greater than the reference signal strength of the camped cell, and the difference is greater than the third threshold. The duration exceeds the second time threshold.
  • the priority of the camping cell is less than or equal to the priority of the neighboring cell or the relay, determine whether there is a neighboring cell or a relay whose reference signal strength satisfies the third preset condition, and if so, select the reference signal strength to satisfy the third pre- The conditional neighbor cell or relay is used as the target source, otherwise, the camped cell is selected as the target source. Satisfying the third preset condition means that the reference signal strength is greater than the reference signal strength of the camping cell, and the duration of the difference greater than the fourth threshold exceeds the third time threshold.
  • the third threshold is greater than the fourth threshold.
  • the processor 401 when determining whether the priority of the camping cell is greater than the priority of the neighboring cell and the relay, is configured to:
  • the priority of the camping cell is greater than the priority of the neighboring cell and the relay.
  • the reference signal of the source comprises: a cell reference signal.
  • a bus architecture (represented by bus 400), which may include any number of interconnected buses and bridges, will include one or more processors and memory 404 represented by general purpose processor 401.
  • the various circuits of the memory are linked together.
  • the bus 400 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art and, therefore, will not be further described herein.
  • Bus interface 403 provides an interface between bus 400 and transceiver 402.
  • Transceiver 402 can be an element or a plurality of elements, such as a plurality of receivers and transmitters, providing means for communicating with various other devices on a transmission medium.
  • transceiver 402 receives external data from other devices.
  • the transceiver 402 is configured to send the processed data of the processor 401 to other devices.
  • a user interface 405 can also be provided, such as a keypad, display, speaker, microphone, joystick.
  • the processor 401 is responsible for managing the bus 400 and the usual processing, running a general purpose operating system as described above.
  • the memory 404 can be used to store data used by the processor 401 in performing operations.
  • the processor 401 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).
  • CPU Central Embedded Device
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • the embodiment of the present application provides a selection scheme of a D2D transmission resource pool, and selects according to the reference signal strength of the source and/or the priority of the source, so as to ensure that the D2D transmitting UE can select when moving.
  • a suitable D2D transmission resource pool is used for sending D2D Discovery/Communication messages.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

La présente invention concerne un procédé qui permet de sélectionner un groupe de ressources de transmission de dispositif à dispositif (D2D) et un équipement utilisateur (UE) de transmission D2D. Le procédé comprend les étapes suivantes : un UE de transmission D2D sélectionne une source de signal cible selon l'intensité du signal des sources de signaux de référence correspondant à des groupes de ressources de transmission D2D et/ou des priorités des sources de signaux ; l'UE de transmission D2D sélectionne un groupe de ressources de transmission D2D correspondant selon l'intensité du signal de référence et/ou une priorité de la source de signal cible. Selon la présente invention, des modes de réalisation de celle-ci fournissent une solution permettant de sélectionner un groupe de ressources de transmission D2D. Le groupe de ressources de transmission D2D est sélectionné selon l'intensité du signal de référence d'une source de signal et/ou la priorité de la source de signal, de manière à garantir que l'UE) de transmission D2D pendant son déplacement peut sélectionner un groupe de ressources de transmission D2D adapté à la transmission d'un message de communication/découverte D2D.
PCT/CN2015/073606 2014-03-14 2015-03-04 Procédé de sélection de groupe de ressources de transmission d2d et équipement d'utilisateur de transmission d2d Ceased WO2015135431A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9967810B2 (en) * 2013-10-31 2018-05-08 Lg Electronics Inc. Method for transmitting discovery message in wireless communication system and apparatus for same
CN108370575A (zh) * 2016-01-05 2018-08-03 富士通株式会社 信息传输方法、装置和系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105307234A (zh) * 2015-11-05 2016-02-03 东莞酷派软件技术有限公司 远端终端的准入控制方法及装置、终端和基站
EP3439388A4 (fr) * 2016-04-01 2019-10-23 Fujitsu Limited Procédé d'allocation de ressources, dispositif et système de communication
TWI633803B (zh) * 2016-10-07 2018-08-21 宏碁股份有限公司 進行點對點通訊之方法及相關通訊系統
CN111988772A (zh) * 2019-05-23 2020-11-24 北京邮电大学 终端发现方法及设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011124015A1 (fr) * 2010-04-06 2011-10-13 Nokia Corporation Procédé et appareil de gestion du brouillage entre cellules pour communications de dispositif à dispositif
CN102404837A (zh) * 2011-12-07 2012-04-04 华为技术有限公司 设备发射功率控制的方法、装置及系统
CN102547871A (zh) * 2012-02-07 2012-07-04 华为技术有限公司 一种d2d通信中的资源协商方法及设备
CN103327568A (zh) * 2012-03-21 2013-09-25 中国移动通信集团公司 资源分配消息发送方法、设备发现方法及相关设备
US20130252654A1 (en) * 2012-03-21 2013-09-26 Telefonaktiebolaget L M Ericsson (Publ) Dynamic resource selection to reduce interference resulting from direct device to device communications

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103209492B (zh) * 2011-09-15 2019-02-12 华为技术有限公司 一种无线资源管理方法和通信设备
CN103037450B (zh) * 2011-09-29 2017-01-25 华为技术有限公司 一种通信模式切换的方法和装置
CN103037448B (zh) * 2011-09-30 2015-05-27 华为技术有限公司 内容发布方法和用户设备
CN103634852B (zh) * 2012-08-28 2017-10-17 华为技术有限公司 D2d通信的资源协商方法、设备及系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011124015A1 (fr) * 2010-04-06 2011-10-13 Nokia Corporation Procédé et appareil de gestion du brouillage entre cellules pour communications de dispositif à dispositif
CN102404837A (zh) * 2011-12-07 2012-04-04 华为技术有限公司 设备发射功率控制的方法、装置及系统
CN102547871A (zh) * 2012-02-07 2012-07-04 华为技术有限公司 一种d2d通信中的资源协商方法及设备
CN103327568A (zh) * 2012-03-21 2013-09-25 中国移动通信集团公司 资源分配消息发送方法、设备发现方法及相关设备
US20130252654A1 (en) * 2012-03-21 2013-09-26 Telefonaktiebolaget L M Ericsson (Publ) Dynamic resource selection to reduce interference resulting from direct device to device communications

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9967810B2 (en) * 2013-10-31 2018-05-08 Lg Electronics Inc. Method for transmitting discovery message in wireless communication system and apparatus for same
CN108370575A (zh) * 2016-01-05 2018-08-03 富士通株式会社 信息传输方法、装置和系统

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