WO2016184286A1 - 执行设备到设备发现过程及检测用户设备的方法及装置 - Google Patents

执行设备到设备发现过程及检测用户设备的方法及装置 Download PDF

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Publication number
WO2016184286A1
WO2016184286A1 PCT/CN2016/079756 CN2016079756W WO2016184286A1 WO 2016184286 A1 WO2016184286 A1 WO 2016184286A1 CN 2016079756 W CN2016079756 W CN 2016079756W WO 2016184286 A1 WO2016184286 A1 WO 2016184286A1
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discovery
relay
timer
mode
model
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PCT/CN2016/079756
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English (en)
French (fr)
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赵亚利
全海洋
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电信科学技术研究院
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Publication of WO2016184286A1 publication Critical patent/WO2016184286A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and apparatus for performing a device-to-device discovery process and detecting a user equipment.
  • the Long Term Evolution (LTE) system introduces UE-NW Relay (UE: User Equipment, User Equipment; NW: network, network) technology, which is within the network coverage.
  • UE-NW Relay UE is an in-network UE, and the UE outside the network coverage is called a Remote UE.
  • the Remote UE can communicate with the UE through the UE-NW Relay UE.
  • a Device to Device (D2D) communication technology is used between the Remote UE and the UE-NW Relay UE, and a traditional cellular communication technology is used between the UE-NW Relay UE and the network.
  • D2D Device to Device
  • the Remote UE can discover the UE-NW Relay UE that can serve it through the D2D discovery mechanism.
  • the shortcoming of the prior art is that the existing D2D Discovery mechanism does not guarantee that the Remote UE can discover the UE-NW Relay UE that can serve it.
  • the present invention provides a method for detecting a relay UE in a D2D discovery process, which is used to ensure that a Remote UE can discover a UE-NW Relay UE that can serve it by using a D2D Discovery mechanism.
  • the embodiment of the invention provides a method for detecting a relay UE in a D2D discovery process, including:
  • the D2D discovery mode is executed in the D2D discovery mode, and the UE-NW Relay UE is detected during the running of the timer corresponding to the mode.
  • the D2D discovery mode includes: UE-NW Relay discovery model A and UE-NW Relay discovery model B;
  • the timer corresponding to the UE-NW Relay discovery model A is the first timer
  • the timer corresponding to the UE-NW Relay discovery model B is the second timer.
  • the D2D discovery process is performed according to the UE-NW Relay discovery model A.
  • the D2D discovery process is performed during the second timer operation according to the UE-NW Relay discovery model B.
  • the first timer After detecting the N1 UE-NW Relay UEs, the first timer is stopped and the D2D discovery process is stopped, and the relayed UE-NW Relay UE is selected, where N1 is greater than 1. Natural number;
  • N2 is greater than The natural number of 1.
  • the value of the N1, N2 is pre-configured or agreed in the protocol.
  • the duration of the first timer and/or the second timer is pre-configured or agreed in the protocol.
  • the UE-NW Relay UE When the UE-NW Relay UE is not detected, the UE is notified that the UE-NW Relay UE is not found, and the D2D discovery process is started according to the trigger command of the upper layer.
  • An embodiment of the present invention provides a method for performing a D2D discovery process, including:
  • the D2D discovery process is performed in the second D2D discovery mode.
  • the first D2D discovery mode is UE-NW Relay discovery model A
  • the second D2D discovery mode is UE-NW Relay discovery model B.
  • the method further includes:
  • the D2D discovery process is performed according to the UE-NW Relay discovery model A. After the third timer expires, the D2D discovery process is performed according to the UE-NW Relay discovery model B.
  • the D2D discovery process is performed in one of the D2D discovery modes, which is started after the UE's Relay function is activated.
  • the D2D discovery process is performed in one of the D2D discovery modes, which is started after the UE's Relay function is activated.
  • the relay function of the UE is activated by the UE, and/or the base station is activated by signaling, and the signaling includes one or a combination of the following signaling: physical layer signaling, MAC signaling, and RRC signaling.
  • An embodiment of the present invention provides a device for detecting a relay UE in a D2D discovery process, including:
  • a first determining module configured to determine a timer corresponding to each D2D discovery mode
  • a first execution module configured to perform a D2D discovery process according to the D2D discovery mode during a timer corresponding to one of the D2D discovery modes, and fail to detect the UE-NW Relay UE before the timer corresponding to the mode expires, Pressing a D2D discovery mode performs a D2D discovery process during the timer operation corresponding to the mode until the UE-NW Relay UE is detected.
  • the first determining module is further configured to determine that the D2D discovery mode includes: UE-NW The timer corresponding to the UE-NW Relay discovery model A is the first timer, and the timer corresponding to the UE-NW Relay discovery model B is the second timer.
  • the first execution module is further configured to perform the D2D discovery process according to the UE-NW Relay discovery model A, and fail to detect the UE-NW Relay UE before the first timer expires, according to the UE-NW Relay discovery model B at the second timing.
  • the D2D discovery process is performed during the running of the device.
  • An embodiment of the present invention provides an apparatus for performing a D2D discovery process, including:
  • a second determining module configured to determine a third timer corresponding to the first D2D discovery mode
  • a second execution module configured to perform a D2D discovery process according to the first D2D discovery mode during the third timer operation corresponding to the first D2D discovery mode, and after the third timer corresponding to the first D2D discovery mode times out, press the second The D2D discovery mode performs the D2D discovery process.
  • the second determining module is further configured to determine that the first D2D discovery mode is UE-NW Relay discovery model A, and the second D2D discovery mode is UE-NW Relay discovery model B;
  • the second execution module is further configured to perform the D2D discovery process according to the UE-NW Relay discovery model B after the third timer expires after performing the D2D discovery process according to the UE-NW Relay discovery model A.
  • the second execution module is further configured to restart the third timer when receiving the Relay discovery request or the UE-NW Relay connection establishment request during the D2D discovery process performed by the UE-NW Relay discovery model B, and During the operation of the three timers, the D2D discovery process is performed according to the UE-NW Relay discovery model A; after performing the D2D discovery process according to the UE-NW Relay discovery model A, after the third timer expires, the D2D discovery is performed according to the UE-NW Relay discovery model B. process.
  • the second execution module is further configured to start performing the D2D discovery process in one of the D2D discovery modes after the relay function of the UE is activated.
  • An embodiment of the present invention provides a user equipment UE, including:
  • transceiver for receiving or transmitting data under the control of a processor
  • a processor for reading a program in the memory performing the following process:
  • the D2D discovery mode is executed in the D2D discovery mode, and the UE-NW Relay UE is detected during the running of the timer corresponding to the mode.
  • the D2D discovery mode includes: the UE-NW Relay discovery model A and the UE-NW Relay discovery model B; the timer corresponding to the UE-NW Relay discovery model A is the first timer, and the UE-NW Relay discovery model B corresponds to The timer is a second timer;
  • the processor is further configured to perform the D2D discovery process according to the UE-NW Relay discovery model A, when the UE-NW Relay UE is not detected before the first timer expires, and run the second timer according to the UE-NW Relay discovery model B.
  • the D2D discovery process is performed during the period.
  • processor is further configured to execute:
  • the first timer After detecting the N1 UE-NW Relay UEs, the first timer is stopped and the D2D discovery process is stopped, and the relayed UE-NW Relay UE is selected, where N1 is greater than 1. Natural number;
  • N2 is greater than The natural number of 1.
  • the value of the N1, N2 is pre-configured or agreed in the protocol.
  • the duration of the first timer and/or the second timer is pre-configured or agreed in the protocol.
  • the processor is further configured to: when the UE-NW Relay UE is not detected, notify the upper layer that the UE-NW Relay UE is not found, and start the D2D discovery process according to the trigger command of the upper layer.
  • An embodiment of the present invention provides a user equipment UE, including:
  • transceiver for receiving or transmitting data under the control of a processor
  • a processor for reading a program in the memory performing the following process:
  • the D2D discovery process is performed in the second D2D discovery mode.
  • the first D2D discovery mode is UE-NW Relay discovery model A
  • the second D2D discovery mode is UE-NW Relay discovery model B.
  • the processor is further used to perform the D2D discovery process in the UE-NW Relay discovery model B:
  • the transceiver When the transceiver receives the Relay discovery request or the UE-NW Relay connection establishment request, restarts the third timer, and performs the D2D discovery process according to the UE-NW Relay discovery model A during the third timer operation;
  • the D2D discovery process is performed according to the UE-NW Relay discovery model B.
  • the duration of the third timer is pre-configured or agreed in the protocol.
  • the processor performs the D2D discovery process in one of the D2D discovery modes, which is started after the UE's Relay function is activated.
  • the relay function of the UE is activated by the UE, and/or the base station is activated by signaling, and the signaling includes one or a combination of the following signaling: physical layer signaling, MAC signaling, and RRC signaling.
  • each mode is transferred to the next mode after being executed for a period of time, so no matter what discovery mode is performed by the Relay UE, It can be guaranteed that the Remote UE can detect the Relay UE.
  • the UE-NW Relay UE side performs the D2D discovery process provided by the embodiment of the present invention, after performing a period of time in a mode, a mode is executed, so that no matter what discovery mode is performed by the Remote UE, Relay
  • the UE can both proactively announce and request the Remote UE.
  • the line responds to ensure that the Relay UE can detect the Remote UE.
  • the UE-NW Relay discovery model A and the UE-NW Relay discovery model B provided by the embodiments of the present invention can ensure that the system supports both the Relay discovery model A and the UE-NW Relay discovery model B. Next, it is ensured that the Remote UE can discover the UE-NW Relay UE.
  • FIG. 1 is a schematic diagram of a communication manner of centralized control of a network according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of D2D Discovery/Communication in an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a UE-NW Relay communication network according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a discovery mode of a discovery mode Discovery model A according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of an implementation process of a discovery mode Discovery model B according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for detecting a Relay UE in a D2D discovery process on a Remote UE side according to an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart of a method for detecting a UE in a D2D discovery process of a UE-NW Relay UE side according to an embodiment of the present invention
  • FIG. 8 is a device for detecting a Relay UE in a D2D discovery process on a Remote UE side according to an embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of an apparatus for detecting a UE in a D2D discovery process of a UE-NW Relay UE side according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a Remote UE according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a UE-NW Relay UE according to an embodiment of the present invention.
  • the existing D2D Discovery mechanism does not guarantee that the Remote UE can discover the UE-NW Relay UE that can serve it for the following reasons:
  • Figure 1 is a schematic diagram of the communication mode of centralized control of the network.
  • the traditional communication system adopts the centralized control mode of the network, that is, the uplink and downlink data of the UE are transmitted and received under the control of the network.
  • the communication data between the UE and the UE is forwarded through the network, and there is no direct communication link between the two.
  • D2D In order to improve network transmission efficiency and reduce UE power consumption, the 3rd Generation Partnership Project (3GPP) introduced a new mechanism for direct communication between UEs, namely D2D.
  • 3GPP 3rd Generation Partnership Project
  • D2D consists of two parts:
  • D2D discovery The UE uses D2D discovery to find out if another UE is nearby. For example, a UE using D2D can use the service to find nearby taxis, find friends nearby, and the like;
  • D2D communication device-to-device communication: UEs that are close to each other, through the direct establishment of a link between the two UEs (such as D2D Discovery or Communication shown in Figure 2), so that the communication link originally transmitted through the network Converted to a local direct communication link, saving a lot of bandwidth and network efficiency; or two close to each other, you can use direct link communication to obtain stable high-speed and low-cost communication services.
  • the proximity service communication is generally performed under the control or assistance of the network side, and the evolved Node B (eNB) may even dynamically allocate resources for the UE performing the proximity service communication.
  • eNB evolved Node B
  • the UE performing D2D may be on the network or off-network, in order to support the off-network UE.
  • the UE-NW Relay mechanism is introduced in the prior art.
  • 3 is a schematic structural diagram of a UE-NW Relay communication network.
  • an off-network UE is called a Remote UE
  • an on-network UE supporting a Relay function is a UE-NW Relay UE.
  • the UE-NW Relay UE is responsible for transferring data between the Remote UE and the network.
  • the Remote UE In order to communicate using the UE-NW Relay, the Remote UE first needs to perform the UE-NW Relay discovery process.
  • UE-NW Relay discovery supports two discovery models: model A and model B. The main difference between the two is:
  • the relay UE initiates the relay UE.
  • the relay UE only needs to send an announcement message.
  • the remote UE does not need to send a response message.
  • the model B mode it is initiated by the Remote UE, which requires not only the Remote UE to send a request (Solicitation) but also The Relay (Response) message sent by the UE-NW Relay UE is received to complete the Relay discovery process.
  • Figure 4 is a schematic diagram of the implementation process of the Discovery model A
  • Figure 5 is a schematic diagram of the implementation process of the Discovery model B. As shown in the figure, the specific processes of the two UE-NW Relay discovery models are as follows:
  • UE1 is a Relay UE
  • UE2-5 is a Remote UE
  • a type (Type) carried in a message sent by UE1 to UE2-5 is Announcement
  • a Disco Type is UE-NW Relay Discovery.
  • the UE1 is a Remote UE
  • the UE2-5 is a Relay UE.
  • the Type carried by the UE1 to the UE2-5 carries the Solicitation and the Disco Type is the UE-NW Relay Discovery.
  • the type of the response message returned by UE2 and UE3 is Response and the Disco Type is UE-NW Relay Discovery.
  • the Relay UE will not receive the Remote UE's Solication, and the Remote UE will not receive the Announcement, which will cause the D2D discovery process to fail.
  • the Relay UE will not respond to the Solicitation initiated by the Remote UE, and the Relay UE sends the Announcement, and the Remote UE will also be in the mode. The difference will not process the message, which will also cause the D2D discovery process to not start.
  • FIG. 6 is a schematic flowchart of a method for detecting a Relay UE in a D2D discovery process on a remote UE side. As shown in the figure, the method may include:
  • Step 601 Determine a timer corresponding to each D2D discovery mode.
  • Step 602 Perform a D2D discovery process according to the D2D discovery mode during a timer corresponding to one of the D2D discovery modes.
  • Step 603 When the UE-NW Relay UE fails to be detected before the timer corresponding to the mode expires, pressing the D2D discovery mode to perform the D2D discovery process during the timer running corresponding to the mode until the UE-NW is detected. Relay UE.
  • each D2D discovery mode is controlled by setting a timer
  • the D2D discovery process is started, the timer starts counting, and when the timer expires, the D2D discovery process is stopped.
  • the D2D discovery mode may include: UE-NW Relay discovery model A and UE-NW Relay discovery model B;
  • the timer corresponding to the UE-NW Relay discovery model A is the first timer
  • the timer corresponding to the UE-NW Relay discovery model B is the second timer.
  • the D2D discovery process is performed during the second timer operation according to the UE-NW Relay discovery model B. .
  • control of the UE-NW Relay discovery model A is specifically implemented by the timer T1
  • control of the UE-NW Relay discovery model B is specifically implemented by the timer T2.
  • the Remote UE stops the timer T1 after detecting N1 (N1 ⁇ 1) UE-NW Relay UEs, and performs UE-NW Relay UE selection.
  • the Remote UE may stop the timer T2 after detecting N2 (N2 ⁇ 1) UE-NW Relay UEs, and perform UE-NW Relay UE selection.
  • the values of the timers T1, T2, and N1, N2 may be pre-configured lengths, or their lengths are agreed in the protocol.
  • each D2D discovery mode may further include:
  • the UE-NW Relay UE when the UE-NW Relay UE is not detected in an execution cycle, the UE is notified that the UE-NW Relay UE is not found, and the upper layer may randomly wait for a period of time, and then trigger the Remote UE to restart the UE again. NW Relay UE detection.
  • the following is an example of the coordination work of the UE-NW Relay discovery model A/B on the Remote UE side.
  • the timer T1 is started, and the UE-NW Relay discovery is started according to the UE-NW Relay discovery model A. If the T1 timeout is not detected, UE-NW Relay UE starts timer T2. UE-NW Relay discovery is performed according to UE-NW Relay discovery model B.
  • the timer T2 times out, if the UE-NW Relay UE has not been detected, the upper layer is notified that the UE-NW Relay UE is not found. Specifically, it can be:
  • the timer T1 is started, and UE-NW Relay discovery is started according to the UE-NW Relay discovery model A.
  • the Remote UE detects N1 (N1 ⁇ 1) UE-NW Relay UEs, stops the timer T1, and performs UE-NW Relay UE selection.
  • the timer T2 is started after the timer T1 times out.
  • the Remote UE may stop the timer T2 after detecting N2 (N2 ⁇ 1) UE-NW Relay UEs, and perform UE-NW Relay UE selection.
  • the timer T2 times out. If the Remote UE has not detected the UE-NW Relay UE, the Remote UE notifies its upper layer that the UE-NW Relay UE is not found.
  • the upper layer may randomly wait for a period of time, and then trigger the Remote UE to restart the UE-NW Relay UE detection according to the previous procedure.
  • the values of the timers T1, T2 and N1, N2 may be pre-configured or their lengths are agreed in the protocol.
  • FIG. 7 is a schematic flowchart of a method for performing a D2D discovery process on a UE-NW Relay UE side, as shown in the figure, which may include:
  • Step 701 Perform a D2D discovery process according to the first D2D discovery mode during a third timer operation corresponding to the first D2D discovery mode.
  • Step 702 After the third timer corresponding to the first D2D discovery mode expires, the D2D discovery process is performed according to the second D2D discovery mode.
  • each D2D discovery mode is controlled by setting a timer
  • the D2D discovery process is started, the timer starts counting, and when the timer expires, the D2D discovery process is stopped.
  • the first D2D discovery mode is UE-NW Relay discovery model A
  • the second D2D discovery mode is UE-NW Relay discovery model B.
  • the Relay UE uses the mode A, which is beneficial to the power saving of the Remote UE. Because the number of Remote UEs is more, the A mode is used as much as possible. It can save energy more effectively.
  • the D2D discovery process is performed according to one of the D2D discovery modes, which is started after the UE's Relay function is activated.
  • the activation of the UE-NW relay function may be that the relay UE activates itself, or the base station is activated by using signaling, and the signaling may be physical layer signaling, media access control (MAC) signaling, Radio Resource Control (RRC) signaling or higher layer signaling.
  • the signaling may be physical layer signaling, media access control (MAC) signaling, Radio Resource Control (RRC) signaling or higher layer signaling.
  • MAC media access control
  • RRC Radio Resource Control
  • the timer T3 is started immediately and operates according to the UE-NW Relay discovery model A.
  • T3 starts to work according to UE-NW Relay discovery model B.
  • the value of the timer T3 may be a pre-configured length or a length is stipulated in the protocol.
  • the method further includes:
  • the D2D discovery process is performed according to the UE-NW Relay discovery model B.
  • the UE-NW Relay discovery model A can be started by simply using the timer restart operation.
  • the UE-NW Relay UE works during the UE-NW Relay discovery model B. If the Relay discovery request of the Remote UE or the UE-NW Relay connection establishment request sent by the Remote UE is received, the timer T3 may be restarted and converted to the UE. -NW Relay discovery model A.
  • the following is an example of the coordinated operation of the UE-NW Relay UE side UE-NW Relay discovery model A/B.
  • the UE-NW Relay UE after the UE-NW Relay function is activated, the UE-NW Relay UE immediately starts the timer T3 and works according to the UE-NW Relay discovery model A.
  • the UE-NW Relay function activation may be that the Relay UE activates itself (such as based on a high-level indication) or the base station activates through signaling (the signaling may be physical layer signaling, MAC signaling, RRC signaling, or higher layer signaling).
  • the UE-NW Relay UE can be converted to the UE-NW Relay discovery model B.
  • the UE-NW Relay UE can restart the timer T3 if it receives the Relay discovery request (Solicitation) of the Remote UE or the UE-NW Relay connection establishment request sent by the Remote UE. Converted to UE-NW Relay discovery model A work.
  • the value of the timer T3 in this embodiment may be pre-configured or its length is stipulated in the protocol.
  • the embodiment of the present invention further provides a device for detecting a relay UE in a D2D discovery process, and a device for performing a D2D discovery process.
  • a device for detecting a relay UE in a D2D discovery process and a device for performing a D2D discovery process.
  • the principle of solving the problem by these devices and detecting in a D2D discovery process The method of relaying the UE and the method of performing the D2D discovery process are similar. Therefore, the implementation of these devices can be referred to the implementation of the method, and the repeated description is not repeated.
  • the device may include:
  • a first determining module 801, configured to determine a timer corresponding to each D2D discovery mode
  • the first execution module 802 is configured to perform a D2D discovery process according to the D2D discovery mode during a timer corresponding to one of the D2D discovery modes, and fail to detect the UE-NW Relay UE before the timer corresponding to the mode expires. Then press a D2D discovery mode in the corresponding mode The D2D discovery process is performed during the running of the timer until the UE-NW Relay UE is detected.
  • the first determining module is further configured to determine that the D2D discovery mode includes: the UE-NW Relay discovery model A and the UE-NW Relay discovery model B; the timer corresponding to the UE-NW Relay discovery model A is the first timer.
  • the timer corresponding to the UE-NW Relay discovery model B is a second timer.
  • the first execution module may be further configured to perform the D2D discovery process according to the UE-NW Relay discovery model A, and fail to detect the UE-NW Relay UE before the first timer expires, according to the UE-NW Relay discovery model B.
  • the D2D discovery process is performed during the second timer run.
  • FIG. 9 is a schematic structural diagram of an apparatus for performing a D2D discovery process on a UE-NW Relay UE side. As shown in the figure, the apparatus may include:
  • a second determining module 901 configured to determine a third timer corresponding to the first D2D discovery mode
  • the second execution module 902 is configured to perform a D2D discovery process according to the first D2D discovery mode during the third timer operation corresponding to the first D2D discovery mode, and after the third timer corresponding to the first D2D discovery mode expires, press the first The second D2D discovery mode performs the D2D discovery process.
  • the second determining module may be further configured to determine that the first D2D discovery mode is UE-NW Relay discovery model A, and the second D2D discovery mode is UE-NW Relay discovery model B;
  • the second execution module may be further configured to perform the D2D discovery process according to the UE-NW Relay discovery model B after the third timer expires after performing the D2D discovery process according to the UE-NW Relay discovery model A.
  • the second execution module may be further configured to restart the third timer when receiving the Relay discovery request or the UE-NW Relay connection establishment request during the D2D discovery process performed by the UE-NW Relay discovery model B, and The D2D discovery process is performed according to the UE-NW Relay discovery model A during the third timer operation; after the third timer expires according to the UE-NW Relay discovery model A, the D2D discovery process is performed according to the UE-NW Relay discovery model B.
  • the second execution module may be further configured to open after the relay function of the UE is activated.
  • the D2D discovery process is performed in one of the D2D discovery modes.
  • FIG. 10 is a schematic structural diagram of a Remote UE. As shown in the figure, the user equipment includes:
  • the processor 1000 is configured to read a program in the memory 1020 and perform the following process:
  • the D2D discovery mode is executed during the running of the timer corresponding to the mode, until the UE-NW Relay UE is detected;
  • the transceiver 1010 is configured to receive or transmit data under the control of the processor 1000.
  • the D2D discovery mode includes: UE-NW Relay discovery model A and UE-NW Relay discovery model B;
  • the timer corresponding to the UE-NW Relay discovery model A is the first timer
  • the timer corresponding to the UE-NW Relay discovery model B is the second timer.
  • the processor 1000 performs the D2D discovery process according to the UE-NW Relay discovery model A, and fails to detect the UE-NW Relay UE before the first timer expires, and performs the second timer operation according to the UE-NW Relay discovery model B. D2D discovery process.
  • processor 1000 is further configured to execute:
  • the first timer After detecting the N1 UE-NW Relay UEs, the first timer is stopped and the D2D discovery process is stopped, and the relayed UE-NW Relay UE is selected, where N1 is greater than 1. Natural number;
  • N2 is a natural number greater than one.
  • the value of the N1, N2 is pre-configured or agreed in the protocol.
  • the duration of the first timer and/or the second timer is pre-configured or agreed in the protocol.
  • processor 1000 is further configured to execute:
  • the UE-NW Relay UE When the UE-NW Relay UE is not detected, the UE is notified that the UE-NW Relay UE is not found, and the D2D discovery process is started according to the trigger command of the upper layer.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1000 and various circuits of memory represented by memory 1020.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 1010 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1030 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1000 in performing operations.
  • FIG. 11 is a schematic structural diagram of a UE-NW Relay UE. As shown in the figure, the user equipment includes:
  • the processor 1100 is configured to read a program in the memory 1120 and perform the following process:
  • the transceiver 1110 is configured to receive or transmit data under the control of the processor 1100.
  • the first D2D discovery mode is UE-NW Relay discovery model A
  • the second D2D discovery mode is UE-NW Relay discovery model B.
  • the processor 1100 performs D2D transmission according to the UE-NW Relay discovery model B. In the process, it is further used to execute:
  • the transceiver 1110 When the transceiver 1110 receives the Relay discovery request or the UE-NW Relay connection establishment request, restarts the third timer, and performs the D2D discovery process according to the UE-NW Relay discovery model A during the third timer operation;
  • the D2D discovery process is performed according to the UE-NW Relay discovery model B.
  • the duration of the third timer is pre-configured or agreed in the protocol.
  • the processor 1100 performs a D2D discovery process in one of the D2D discovery modes, which is started after the UE's Relay function is activated.
  • the relay function of the UE is activated by the UE, and/or the base station is activated by signaling, and the signaling includes one or a combination of the following signaling: physical layer signaling, MAC signaling, and RRC signaling.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 1110 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1130 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 in performing operations.
  • the timer T1 is started, and the UE-NW is started according to the UE-NW Relay discovery model A.
  • the Relay finds that if the T1 timeout has not detected the UE-NW Relay UE, the timer T2 is started, and the UE-NW Relay discovery is performed according to the UE-NW Relay discovery model B.
  • the Remote UE stops the timer T1 after detecting N1 (N1 ⁇ 1) UE-NW Relay UEs, and performs UE-NW Relay UE selection.
  • the Remote UE may stop the timer T2 after detecting N2 (N2 ⁇ 1) UE-NW Relay UEs, and perform UE-NW Relay UE selection.
  • the upper layer may randomly wait for a period of time, and trigger the Remote UE to restart the UE-NW Relay UE detection again.
  • the timer T3 is started immediately and operates according to the UE-NW Relay discovery model A.
  • T3 starts to work according to UE-NW Relay discovery model B.
  • the UE-NW Relay UE works during the UE-NW Relay discovery model B. If the Relay discovery request of the Remote UE or the UE-NW Relay connection establishment request sent by the Remote UE is received, the timer T3 may be restarted and converted to the UE. -NW Relay discovery model A.
  • the activation of the UE-NW relay function may be that the Relay UE activates itself, or the base station may be activated by signaling, and the signaling may be physical layer signaling, MAC signaling, RRC signaling, or higher layer signaling.
  • the values of the timers T1, T2, T3, and N1, N2 may be pre-configured or their lengths are agreed in the protocol.
  • the UE-NW Relay discovery model A and the UE-NW Relay discovery model B coordinated by the embodiments of the present invention can ensure that the system supports both the Relay discovery model A and the UE-NW Relay discovery model B while the system supports Remote.
  • the UE can discover the UE-NW Relay UE and can save both the Remote UE and the UE-NW Relay UE as much as possible.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention 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 and 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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Abstract

本发明公开了一种执行设备到设备发现过程及检测用户设备的方法及装置,包括:在远端用户设备侧,在其中一个设备到设备发现模式对应的定时器运行期间按照该模式执行;在该模式对应的定时器超时前未能检测到用户设备到网络中继用户设备时,则按下一个设备到设备发现模式在对应的定时器运行期间执行直至检测到。在用户设备到网络中继用户设备侧,在第一设备到设备发现模式对应的第三定时器运行期间按照第一设备到设备发现模式执行;在第三定时器超时后,按第二设备到设备发现模式执行。采用本发明可以保证在系统同时支持用户设备到网络中继发现模式A和B的情况下,远端用户设备可以发现用户设备到网络中继用户设备。

Description

执行设备到设备发现过程及检测用户设备的方法及装置
本申请要求在2015年5月15日提交中国专利局、申请号为201510251518.7、发明名称为“执行设备到设备发现过程及检测用户设备的方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域,尤其涉及一种执行设备到设备发现过程及检测用户设备的方法及装置。
背景技术
长期演进(Long Term Evolution,LTE)系统为了扩展网络覆盖,引入了UE到网络中继(UE-NW Relay,UE:User Equipment,用户设备;NW:network,网络)技术,处于网络覆盖范围内的UE-NW Relay UE是一个在网UE,处于网络覆盖范围外的UE称为远端UE(Remote UE),Remote UE可以通过UE-NW Relay UE和网络进行通信。其中Remote UE和UE-NW Relay UE之间使用设备到设备(Device to Device,D2D)通信技术,UE-NW Relay UE和网络之间使用传统的蜂窝通信技术。
Remote UE可以通过D2D发现(D2D discovery)机制发现可以为其服务的UE-NW Relay UE。但现有技术的不足在于:现有的D2D Discovery机制并不能保证Remote UE可以发现能够为其服务的UE-NW Relay UE。
发明内容
本发明提供了一种D2D发现过程中检测中继UE的方法,用以保证Remote UE利用D2D Discovery机制可以发现能够为其服务的UE-NW Relay UE。
本发明实施例提供了一种D2D发现过程中检测中继UE的方法,包括:
确定各D2D发现模式对应的定时器;
在其中一个D2D发现模式对应的定时器运行期间按照该D2D发现模式执行D2D发现过程;
在该模式对应的定时器超时前未能检测到UE-NW Relay UE时,则按下一个D2D发现模式在该模式对应的定时器运行期间执行D2D发现过程,直至检测到UE-NW Relay UE。
进一步地,D2D发现模式包括:UE-NW Relay discovery model A与UE-NW Relay discovery model B;
UE-NW Relay discovery model A对应的定时器为第一定时器,UE-NW Relay discovery model B对应的定时器为第二定时器;
按UE-NW Relay discovery model A执行D2D发现过程在第一定时器超时前未能检测到UE-NW Relay UE时,按UE-NW Relay discovery model B在第二定时器运行期间执行D2D发现过程。
进一步地,包括:
在第一定时器运行期间,在检测到N1个UE-NW Relay UE后停止第一定时器及停止执行D2D发现过程,并选择进行中继的UE-NW Relay UE,其中,N1为大于1的自然数;
或,在第二定时器运行期间,在检测到N2个UE-NW Relay UE后停止第二定时器及停止执行D2D发现过程,并选择进行中继的UE-NW Relay UE,其中,N2为大于1的自然数。
进一步地,所述N1,N2的取值是预配置的,或是在协议中约定的。
进一步地,所述第一定时器和/或第二定时器的时长是预配置的,或是在协议中约定的。
进一步地,包括:
未能检测到UE-NW Relay UE时,通知高层未发现UE-NW Relay UE,并根据高层的触发指令开始执行D2D发现过程。
本发明实施例提供了一种执行D2D发现过程的方法,包括:
在第一D2D发现模式对应的第三定时器运行期间按照第一D2D发现模式执行D2D发现过程;
在第一D2D发现模式对应的第三定时器超时后,按第二D2D发现模式执行D2D发现过程。
进一步地,所述第一D2D发现模式为UE-NW Relay discovery model A,所述第二D2D发现模式为UE-NW Relay discovery model B。
进一步地,按UE-NW Relay discovery model B执行D2D发现过程中,进一步包括:
在接收到Relay discovery请求或者UE-NW Relay连接建立请求时,重启第三定时器,并在第三定时器运行期间按UE-NW Relay discovery model A执行D2D发现过程;
按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
进一步地,按其中一个D2D发现模式执行D2D发现过程,是在UE的Relay功能被激活后开始执行的。
进一步地,按其中一个D2D发现模式执行D2D发现过程,是在UE的Relay功能被激活后开始执行的。
进一步地,UE的Relay功能是通过UE激活的,和/或基站通过信令激活的,所述信令包括以下信令之一或者组合:物理层信令、MAC信令、RRC信令。
本发明实施例提供了一种D2D发现过程中检测中继UE的装置,包括:
第一确定模块,用于确定各D2D发现模式对应的定时器;
第一执行模块,用于在其中一个D2D发现模式对应的定时器运行期间按照该D2D发现模式执行D2D发现过程,在该模式对应的定时器超时前未能检测到UE-NW Relay UE时,则按下一个D2D发现模式在该模式对应的定时器运行期间执行D2D发现过程,直至检测到UE-NW Relay UE。
进一步地,第一确定模块进一步用于确定D2D发现模式包括:UE-NW  Relay discovery model A与UE-NW Relay discovery model B;UE-NW Relay discovery model A对应的定时器为第一定时器,UE-NW Relay discovery model B对应的定时器为第二定时器;
第一执行模块进一步用于在按UE-NW Relay discovery model A执行D2D发现过程在第一定时器超时前未能检测到UE-NW Relay UE时,按UE-NW Relay discovery model B在第二定时器运行期间执行D2D发现过程。
本发明实施例提供了一种执行D2D发现过程的装置,包括:
第二确定模块,用于确定第一D2D发现模式对应的第三定时器;
第二执行模块,用于在第一D2D发现模式对应的第三定时器运行期间按照第一D2D发现模式执行D2D发现过程,在第一D2D发现模式对应的第三定时器超时后,按第二D2D发现模式执行D2D发现过程。
进一步地,第二确定模块进一步用于确定第一D2D发现模式为UE-NW Relay discovery model A,第二D2D发现模式为UE-NW Relay discovery model B;
第二执行模块进一步用于在按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
进一步地,第二执行模块进一步用于在按UE-NW Relay discovery model B执行D2D发现过程中,在接收到Relay discovery请求或者UE-NW Relay连接建立请求时,重启第三定时器,并在第三定时器运行期间按UE-NW Relay discovery model A执行D2D发现过程;在按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
进一步地,第二执行模块进一步用于在UE的Relay功能被激活后开始按其中一个D2D发现模式执行D2D发现过程。
本发明实施例提供了一种用户设备UE,包括:
收发机,用于在处理器的控制下接收或发送数据;
处理器,用于读取存储器中的程序,执行下列过程:
确定各D2D发现模式对应的定时器;
在其中一个D2D发现模式对应的定时器运行期间按照该D2D发现模式执行D2D发现过程;
在该模式对应的定时器超时前未能检测到UE-NW Relay UE时,则按下一个D2D发现模式在该模式对应的定时器运行期间执行D2D发现过程,直至检测到UE-NW Relay UE。
进一步地,D2D发现模式包括:UE-NW Relay discovery model A与UE-NW Relay discovery model B;UE-NW Relay discovery model A对应的定时器为第一定时器,UE-NW Relay discovery model B对应的定时器为第二定时器;
处理器进一步用于在按UE-NW Relay discovery model A执行D2D发现过程在第一定时器超时前未能检测到UE-NW Relay UE时,按UE-NW Relay discovery model B在第二定时器运行期间执行D2D发现过程。
进一步地,处理器进一步用于执行:
在第一定时器运行期间,在检测到N1个UE-NW Relay UE后停止第一定时器及停止执行D2D发现过程,并选择进行中继的UE-NW Relay UE,其中,N1为大于1的自然数;
或,在第二定时器运行期间,在检测到N2个UE-NW Relay UE后停止第二定时器及停止执行D2D发现过程,并选择进行中继的UE-NW Relay UE,其中,N2为大于1的自然数。
进一步地,所述N1,N2的取值是预配置的,或是在协议中约定的。
进一步地,所述第一定时器和/或第二定时器的时长是预配置的,或是在协议中约定的。
处理器进一步用于执行:未能检测到UE-NW Relay UE时,通知高层未发现UE-NW Relay UE,并根据高层的触发指令开始执行D2D发现过程。
本发明实施例提供了一种用户设备UE,包括:
收发机,用于在处理器的控制下接收或发送数据;
处理器,用于读取存储器中的程序,执行下列过程:
在第一D2D发现模式对应的第三定时器运行期间按照第一D2D发现模式执行D2D发现过程;
在第一D2D发现模式对应的第三定时器超时后,按第二D2D发现模式执行D2D发现过程。
进一步地,所述第一D2D发现模式为UE-NW Relay discovery model A,所述第二D2D发现模式为UE-NW Relay discovery model B。
处理器在按UE-NW Relay discovery model B执行D2D发现过程中,进一步用于执行:
在收发机接收到Relay discovery请求或者UE-NW Relay连接建立请求时,重启第三定时器,并在第三定时器运行期间按UE-NW Relay discovery model A执行D2D发现过程;
在按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
进一步地,所述第三定时器的时长是预配置的,或是在协议中约定的。
进一步地,处理器按其中一个D2D发现模式执行D2D发现过程,是在UE的Relay功能被激活后开始执行的。
进一步地,UE的Relay功能是通过UE激活的,和/或基站通过信令激活的,所述信令包括以下信令之一或者组合:物理层信令、MAC信令、RRC信令。
本发明有益效果如下:
由于在本发明实施例提供的Remote UE侧D2D发现过程中检测Relay UE的方案中,每种模式都会在执行一段时间后转入下一模式来执行,因此不管Relay UE执行何种发现模式,都可以保证Remote UE能够检测到Relay UE。
在本发明实施例提供的UE-NW Relay UE侧执行D2D发现过程的方案中,在按一种模式执行一段时间后,便按下一模式来执行,使得不管Remote UE执行何种发现模式,Relay UE既能主动的宣告,也能对Remote UE的请求进 行响应,从而保证Relay UE能够检测到Remote UE。
进一步的,通过本发明实施例提供的UE-NW Relay discovery model A和UE-NW Relay discovery model B协调工作的方案,可以保证在系统同时支持Relay discovery model A和UE-NW Relay discovery model B的情况下,保证Remote UE可以发现UE-NW Relay UE。
附图说明
此处所说明的附图用来提供对本发明的进一步理解,构成本发明的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1为本发明实施例中网络集中控制的通信方式示意图;
图2为本发明实施例中D2D发现/通信(D2D Discovery/Communication)示意图;
图3为本发明实施例中UE-NW Relay通信网络结构示意图;
图4为本发明实施例中发现模式Discovery model A实施流程示意图;
图5为本发明实施例中发现模式Discovery model B实施流程示意图;
图6为本发明实施例中在Remote UE侧D2D发现过程中检测Relay UE的方法实施流程示意图;
图7为本发明实施例中在UE-NW Relay UE侧D2D发现过程中检测UE的方法实施流程示意图;
图8为本发明实施例中在Remote UE侧D2D发现过程中检测Relay UE的装置;
图9为本发明实施例中在UE-NW Relay UE侧D2D发现过程中检测UE的装置结构示意图;
图10为本发明实施例中Remote UE结构示意图;
图11为本发明实施例中UE-NW Relay UE结构示意图。
具体实施方式
下面结合附图对本发明的具体实施方式进行说明。
发明人在发明过程中注意到:
现有的D2D Discovery机制并不能保证Remote UE可以发现可以为其服务的UE-NW Relay UE,其原因如下:
图1为网络集中控制的通信方式示意图,如图所示,传统的通信系统是采用网络集中控制的方式,即UE的上下行数据都在网络的控制下进行发送和接收。UE和UE之间的通信数据是通过网络转发的,两者之间并不存在直接的通信链路。
为了提升网络传输效率,降低UE功率消耗,第三代合作伙伴计划(3rd Generation Partnership Project,3GPP)引入了一种新的UE之间直接通信的机制,即D2D。图2为D2D发现/通信(D2D Discovery/Communication)示意图,图中UE和网络之间使用虚线连接,该虚线示意使用D2D的UE既可以是在网的,也可以是脱网的(即D2D不受网络控制)。如图所示,D2D包括两部分内容:
1、设备到设备发现(D2D discovery):UE使用D2D discovery来发现是否有另外一个UE在其附近。例如,使用D2D的UE可以使用该服务来寻找附近的出租车、寻找在其附近的朋友等;
2、设备到设备通信(D2D communication):相互接近的UE,通过在两个UE之间直接建立链路(如图2所示的D2D Discovery or Communication),这样将原本通过网络传输的通信链路转化为本地的直接通信链路,节省了大量的带宽和网络效率;或者两个相互接近的UE,可以利用直接链路通信来获得稳定高速低廉的通信服务。接近服务通信一般是在网络侧控制或者辅助下进行的,演进基站(evolved Node B,eNB)甚至可能会为进行接近服务通信的UE动态的分配资源。
进行D2D的UE可以是在网的也可以是脱网的,为了支持脱网UE能够 和网络进行通信,现有技术中引入了UE-NW Relay机制。图3为UE-NW Relay通信网络结构示意图,图中,脱网的UE称为Remote UE,支持Relay功能的在网UE为UE-NW Relay UE。如图所示,UE-NW Relay UE负责在Remote UE和网络之间中转数据。
为了使用UE-NW Relay进行通信,Remote UE首先需要进行UE-NW Relay discovery过程。目前UE-NW Relay discovery支持两种发现模式(discovery model):model A和model B。两者的主要区别是:
model A方式下,由Relay UE发起,Relay UE只需要发送宣告(announcement)消息,Remote UE无需反馈响应消息;model B方式下,由Remote UE发起,不仅需要Remote UE发送请求(Solicitation),还需接收UE-NW Relay UE发送的响应(Response)消息,才能完成Relay discovery过程。图4为Discovery model A实施流程示意图,图5 为Discovery model B实施流程示意图,如图所示,两种UE-NW Relay discovery models具体流程如下:
图4中,UE1为Relay UE,UE2-5为Remote UE,UE1向UE2-5发送的消息(message)中携带的类型(Type)为Announcement,发现类型(Disco Type)为UE-NW Relay Discovery。
图5中,UE1为Remote UE,UE2-5为Relay UE,UE1向UE2-5发送的message中携带的Type为Solicitation,Disco Type为UE-NW Relay Discovery。
UE2、UE3返回的响应message中携带的Type为Response,Disco Type为UE-NW Relay Discovery。
目前3GPP要求对于UE-NW Relay discovery,discovery model A和model B都需要支持。
然而,对于同时支持UE-NW Relay discovery model A和UE-NW Relay discovery model B的通信系统,如何让两种UE-NW Relay discovery models协调工作,保证Remote UE可以发现UE-NW relay UE,目前并没有解决的方案,而这也使得现有的D2D Discovery机制不能保证Remote UE能够发现可以为其服务的UE-NW Relay UE。例如,当两个UE以不同的模式工作时,将不能 完成D2D discovery过程。具体原因如下:
假设,Remote UE以model A工作、而Relay UE以model B工作,那么,Relay UE将接收不到Remote UE的Solicitation,而Remote UE也将接收不到Announcement,这将导致D2D discovery过程不能开始;
或者,假设,Remote UE以model B工作、而Relay UE以model A工作,那么,即使Remote UE发起Solicitation,Relay UE也不会响应Remote UE发起的Solicitation,Relay UE发送Announcement,Remote UE也会因模式不同而不会处理该消息,这也将导致D2D discovery过程不能开始。
基于此,本发明实施例中给出了一种UE-NW Relay discovery model A和UE-NW Relay discovery model B协调工作的方案。下面进行说明。
在说明过程中,将分别从UE-NW Relay UE与Remote UE侧的实施进行说明,但这并不意味着二者必须配合实施,实际上,当UE-NW Relay UE与Remote UE分开实施时,其也各自解决UE-NW Relay UE侧、Remote UE侧的问题,只是二者结合使用时,会获得更好的技术效果。
图6为在Remote UE侧D2D发现过程中检测Relay UE的方法实施流程示意图,如图所示,可以包括:
步骤601、确定各D2D发现模式对应的定时器;
步骤602、在其中一个D2D发现模式对应的定时器运行期间按照该D2D发现模式执行D2D发现过程;
步骤603、在该模式对应的定时器超时前未能检测到UE-NW Relay UE时,则按下一个D2D发现模式在该模式对应的定时器运行期间执行D2D发现过程,直至检测到UE-NW Relay UE。
实施中,在通过设定定时器的方式来控制每一个D2D发现模式的执行时,开始执行D2D发现过程,定时器也开始计时,定时器到时,则停止执行D2D发现过程。
实施中,D2D发现模式可以包括:UE-NW Relay discovery model A与UE-NW Relay discovery model B;
UE-NW Relay discovery model A对应的定时器为第一定时器,UE-NW Relay discovery model B对应的定时器为第二定时器;
在按UE-NW Relay discovery model A执行D2D发现过程在第一定时器超时前未能检测到UE-NW Relay UE时,按UE-NW Relay discovery model B在第二定时器运行期间执行D2D发现过程。
为便于理解,下面将以定时器T1来具体实施对UE-NW Relay discovery model A的控制,以定时器T2来具体实施对UE-NW Relay discovery model B的控制。则在具体实施中:
对于Remote UE,其定时器T1和T2可以按照如下方式维护:
在定时器T1运行期间,Remote UE在检测到N1个(N1≥1)UE-NW Relay UE后停止定时器T1,并进行UE-NW Relay UE选择。
在定时器T2运行期间,Remote UE可以在检测到N2个(N2≥1)UE-NW Relay UE后停止定时器T2,并进行UE-NW Relay UE选择。
具体实施中,定时器T1、T2,以及N1、N2的取值可以是预配置的长度,或者在协议中约定其长度。
实施中,如果在一个执行周期中,各D2D发现模式执行一次,则可以进一步包括:
在一个执行周期内未能检测到UE-NW Relay UE时,在等待预设时间长度或经过随机时间长度后,开始下一个执行周期。
具体实施中,可以是,在一个执行周期内未能检测到UE-NW Relay UE时,通知高层未发现UE-NW Relay UE,则高层可以随机等待一段时间,然后再次触发Remote UE重新开始UE-NW Relay UE检测。
下面以Remote UE侧UE-NW Relay discovery model A/B协调工作的实例进行说明。
本实施例中,对于Remote UE,当其期望发现UE-NW Relay UE时,启动定时器T1,并开始按照UE-NW Relay discovery model A进行UE-NW Relay discovery,当T1超时如果还未检测到UE-NW Relay UE,则开启定时器T2, 并按照UE-NW Relay discovery model B进行UE-NW Relay discovery。当定时器T2超时,如果还未检测到UE-NW Relay UE,则通知高层未发现UE-NW Relay UE。具体可以为:
对于Remote UE,当其期望发现UE-NW Relay UE时,启动定时器T1,并开始按照UE-NW Relay discovery model A进行UE-NW Relay discovery。
在定时器T1运行期间,Remote UE检测到N1个(N1≥1)UE-NW Relay UE,则停止定时器T1,并进行UE-NW Relay UE选择。
如果T1超时后,Remote UE未检测到UE-NW Relay UE,则当定时器T1超时后,启动定时器T2。在定时器T2运行期间,如果检测到UE-NW Relay UE,Remote UE可以在检测到N2个(N2≥1)UE-NW Relay UE后停止定时器T2,并进行UE-NW Relay UE选择。
定时器T2超时,如果Remote UE还未检测到UE-NW Relay UE,则Remote UE通知其高层未发现UE-NW Relay UE。
对于Remote UE,如果其通知高层未发现UE-NW Relay UE,高层可以随机等待一段时间,然后再次触发Remote UE按照前面的过程重新开始UE-NW Relay UE检测。
实施例中定时器T1,T2以及N1,N2的取值可以是预配置的或者在协议中约定其长度。
图7为在UE-NW Relay UE侧执行D2D发现过程的方法实施流程示意图,如图所示,可以包括:
步骤701、在第一D2D发现模式对应的第三定时器运行期间按照第一D2D发现模式执行D2D发现过程;
步骤702、在第一D2D发现模式对应的第三定时器超时后,按第二D2D发现模式执行D2D发现过程。
实施中,在通过设定定时器的方式来控制每一个D2D发现模式的执行时,开始执行D2D发现过程,定时器也开始计时,定时器到时,则停止执行D2D发现过程。
实施中,第一D2D发现模式为UE-NW Relay discovery model A,第二D2D发现模式为UE-NW Relay discovery model B。
具体实施中,针对UE-NW Relay discovery model A、UE-NW Relay discovery model B的执行顺序,Relay UE使用模式A,有利于Remote UE节电,因为Remote UE个数更多,所以尽量使用A模式就可以更有效的节电。
实施中,按其中一个D2D发现模式执行D2D发现过程,是在UE的Relay功能被激活后开始执行的。
具体实施中,UE-NW Relay功能的激活可以是Relay UE自己激活,也可以是基站通过信令激活,信令可以是物理层信令、媒体接入控制(Media Access Control,MAC)信令、无线资源控制(Radio Resource Control,RRC)信令或者更高层信令。
为便于理解,下面将以定时器T3的具体实施来进行说明。则在具体实施中:
对于UE-NW Relay UE,当其Relay功能被激活后,则立即启动定时器T3,并按照UE-NW Relay discovery model A工作。当T3超时后,开始按照UE-NW Relay discovery model B工作。
具体实施中,定时器T3的取值可以是预配置的长度,或者在协议中约定其长度。
实施中,按UE-NW Relay discovery model B执行D2D发现过程中,可以进一步包括:
在接收到Relay discovery请求或者UE-NW Relay连接建立请求时,重启第三定时器,并在第三定时器运行期间按UE-NW Relay discovery model A执行D2D发现过程;
在按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
具体实施中,只需简单的采用定时器重启操作,便可以启动UE-NW Relay discovery model A执行。
具体的,UE-NW Relay UE工作在UE-NW Relay discovery model B期间,如果接收到Remote UE的Relay discovery请求或者Remote UE发送的UE-NW Relay连接建立请求,可以重启定时器T3并转换为UE-NW Relay discovery model A。
下面以UE-NW Relay UE侧UE-NW Relay discovery model A/B协调工作的的实例进行说明。
本实施例中,当UE-NW Relay功能被激活后,UE-NW Relay UE立即启动定时器T3,并按照UE-NW Relay discovery model A工作。其中UE-NW Relay功能激活可以是Relay UE自己激活(比如基于高层指示)或者基站通过信令激活(信令可以是物理层信令、MAC信令、RRC信令或者更高层信令)。
当T3超时后,为了节电,UE-NW Relay UE可以转换为UE-NW Relay discovery model B工作。
进一步的,UE-NW Relay UE工作在UE-NW Relay discovery model B期间,如果接收到Remote UE的Relay discovery请求(Solicitation)或者Remote UE发送的UE-NW Relay连接建立请求,可以重启定时器T3并转换为UE-NW Relay discovery model A工作。
本实施例中定时器T3的取值可以是预配置的或者在协议中约定其长度。
基于同一发明构思,本发明实施例中还提供了一种D2D发现过程中检测中继UE的装置、一种执行D2D发现过程的装置,由于这些装置解决问题的原理与一种D2D发现过程中检测中继UE的方法、一种执行D2D发现过程的方法相似,因此这些设备的实施可以参见方法的实施,重复之处不再赘述。
图8为在Remote UE侧D2D发现过程中检测中继Relay UE的装置,如图所示,装置中可以包括:
第一确定模块801,用于确定各D2D发现模式对应的定时器;
第一执行模块802,用于在其中一个D2D发现模式对应的定时器运行期间按照该D2D发现模式执行D2D发现过程,在该模式对应的定时器超时前未能检测到UE-NW Relay UE时,则按下一个D2D发现模式在该模式对应的定 时器运行期间执行D2D发现过程,直至检测到UE-NW Relay UE。
实施中,第一确定模块还可以进一步用于确定D2D发现模式包括:UE-NW Relay discovery model A与UE-NW Relay discovery model B;UE-NW Relay discovery model A对应的定时器为第一定时器,UE-NW Relay discovery model B对应的定时器为第二定时器;
第一执行模块还可以进一步用于在按UE-NW Relay discovery model A执行D2D发现过程在第一定时器超时前未能检测到UE-NW Relay UE时,按UE-NW Relay discovery model B在第二定时器运行期间执行D2D发现过程。
图9为在UE-NW Relay UE侧执行D2D发现过程的装置结构示意图,如图所示,装置中可以包括:
第二确定模块901,用于确定第一D2D发现模式对应的第三定时器;
第二执行模块902,用于在第一D2D发现模式对应的第三定时器运行期间按照第一D2D发现模式执行D2D发现过程,在第一D2D发现模式对应的第三定时器超时后,按第二D2D发现模式执行D2D发现过程。
实施中,第二确定模块还可以进一步用于确定第一D2D发现模式为UE-NW Relay discovery model A,第二D2D发现模式为UE-NW Relay discovery model B;
第二执行模块还可以进一步用于在按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
实施中,第二执行模块还可以进一步用于在按UE-NW Relay discovery model B执行D2D发现过程中,在接收到Relay discovery请求或者UE-NW Relay连接建立请求时,重启第三定时器,并在第三定时器运行期间按UE-NW Relay discovery model A执行D2D发现过程;在按UE-NW Relay discovery model A在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
实施中,第二执行模块还可以进一步用于在UE的Relay功能被激活后开 始按其中一个D2D发现模式执行D2D发现过程。
为了描述的方便,以上所述装置的各部分以功能分为各种模块或单元分别描述。当然,在实施本发明时可以把各模块或单元的功能在同一个或多个软件或硬件中实现。
在实施本发明实施例提供的技术方案时,可以按如下方式实施。
图10为Remote UE结构示意图,如图所示,用户设备包括:
处理器1000,用于读取存储器1020中的程序,执行下列过程:
确定各D2D发现模式对应的定时器;
在其中一个D2D发现模式对应的定时器运行期间按照该D2D发现模式执行D2D发现过程;
在该模式对应的定时器超时前未能检测到UE-NW Relay UE时,则按下一个D2D发现模式在该模式对应的定时器运行期间执行D2D发现过程,直至检测到UE-NW Relay UE;
收发机1010,用于在处理器1000的控制下接收或发送数据。
实施中,D2D发现模式包括:UE-NW Relay discovery model A与UE-NW Relay discovery model B;
UE-NW Relay discovery model A对应的定时器为第一定时器,UE-NW Relay discovery model B对应的定时器为第二定时器;
处理器1000在按UE-NW Relay discovery model A执行D2D发现过程在第一定时器超时前未能检测到UE-NW Relay UE时,按UE-NW Relay discovery model B在第二定时器运行期间执行D2D发现过程。
实施中,处理器1000进一步用于执行:
在第一定时器运行期间,在检测到N1个UE-NW Relay UE后停止第一定时器及停止执行D2D发现过程,并选择进行中继的UE-NW Relay UE,其中,N1为大于1的自然数;
或,在第二定时器运行期间,在检测到N2个UE-NW Relay UE后停止第二定时器及停止执行D2D发现过程,并选择进行中继的UE-NW Relay UE, 其中,N2为大于1的自然数。
实施中,所述N1,N2的取值是预配置的,或是在协议中约定的。
实施中,所述第一定时器和/或第二定时器的时长是预配置的,或是在协议中约定的。
实施中,处理器1000进一步用于执行:
未能检测到UE-NW Relay UE时,通知高层未发现UE-NW Relay UE,并根据高层的触发指令开始执行D2D发现过程。
其中,在图10中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1000代表的一个或多个处理器和存储器1020代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1010可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口1030还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1000负责管理总线架构和通常的处理,存储器1020可以存储处理器1000在执行操作时所使用的数据。
图11为UE-NW Relay UE结构示意图,如图所示,用户设备包括:
处理器1100,用于读取存储器1120中的程序,执行下列过程:
在第一D2D发现模式对应的第三定时器运行期间按照第一D2D发现模式执行D2D发现过程;
在第一D2D发现模式对应的第三定时器超时后,按第二D2D发现模式执行D2D发现过程;
收发机1110,用于在处理器1100的控制下接收或发送数据。
实施中,所述第一D2D发现模式为UE-NW Relay discovery model A,所述第二D2D发现模式为UE-NW Relay discovery model B。
实施中,处理器1100在按UE-NW Relay discovery model B执行D2D发 现过程中,进一步用于执行:
在收发机1110接收到Relay discovery请求或者UE-NW Relay连接建立请求时,重启第三定时器,并在第三定时器运行期间按UE-NW Relay discovery model A执行D2D发现过程;
在按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
实施中,所述第三定时器的时长是预配置的,或是在协议中约定的。
实施中,处理器1100按其中一个D2D发现模式执行D2D发现过程,是在UE的Relay功能被激活后开始执行的。
实施中,UE的Relay功能是通过UE激活的,和/或基站通过信令激活的,所述信令包括以下信令之一或者组合:物理层信令、MAC信令、RRC信令。
其中,在图11中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1100代表的一个或多个处理器和存储器1120代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1110可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备,用户接口1130还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1100负责管理总线架构和通常的处理,存储器1120可以存储处理器1100在执行操作时所使用的数据。
综上所述,在本发明实施例提供的技术方案中,对于Remote UE,当其期望发现UE-NW Relay UE时,启动定时器T1,并开始按照UE-NW Relay discovery model A进行UE-NW Relay发现,当T1超时如果还未检测到UE-NW Relay UE,则开启定时器T2,并按照UE-NW Relay discovery model B进行UE-NW Relay discovery。
在该过程中,可以按照如下方式维护:
在定时器T1运行期间,Remote UE在检测到N1个(N1≥1)UE-NW Relay UE后停止定时器T1,并进行UE-NW Relay UE选择。
在定时器T2运行期间,Remote UE可以在检测到N2个(N2≥1)UE-NW Relay UE后停止定时器T2,并进行UE-NW Relay UE选择。
如果其通知高层未发现UE-NW Relay UE,则高层可以随机等待一段时间,再次触发Remote UE重新开始UE-NW Relay UE检测。
对于UE-NW Relay UE,当其Relay功能被激活后,则立即启动定时器T3,并按照UE-NW Relay discovery model A工作。当T3超时后,开始按照UE-NW Relay discovery model B工作。
进一步的,UE-NW Relay UE工作在UE-NW Relay discovery model B期间,如果接收到Remote UE的Relay discovery请求或者Remote UE发送的UE-NW Relay连接建立请求,可以重启定时器T3并转换为UE-NW Relay discovery model A。
UE-NW Relay功能的激活可以是Relay UE自己激活,也可以是基站通过信令激活,信令可以是物理层信令、MAC信令、RRC信令或者更高层信令。
其中,定时器T1,T2,T3,以及N1,N2的取值可以是预配置的或者在协议中约定其长度。
采用本发明实施例提供的UE-NW Relay discovery model A和UE-NW Relay discovery model B协调工作的方案,可以保证在系统同时支持Relay discovery model A和UE-NW Relay discovery model B的情况下,Remote UE可以发现UE-NW Relay UE,并且可以让Remote UE和UE-NW Relay UE都尽可能节电。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (20)

  1. 一种设备到设备D2D发现过程中检测中继用户设备UE的方法,其特征在于,包括:
    确定各D2D发现模式对应的定时器;
    在其中一个D2D发现模式对应的定时器运行期间按照该D2D发现模式执行D2D发现过程;
    在该模式对应的定时器超时前未能检测到用户设备到网络中继用户设备UE-NW Relay UE时,则按下一个D2D发现模式在该模式对应的定时器运行期间执行D2D发现过程,直至检测到UE-NW Relay UE。
  2. 根据权利要求1所述的方法,其特征在于,D2D发现模式包括:用户设备到网络中继发现模式UE-NW Relay discovery model A与UE-NW Relay discovery model B;
    UE-NW Relay discovery model A对应的定时器为第一定时器,UE-NW Relay discovery model B对应的定时器为第二定时器;
    按UE-NW Relay discovery model A执行D2D发现过程在第一定时器超时前未能检测到UE-NW Relay UE时,按UE-NW Relay discovery model B在第二定时器运行期间执行D2D发现过程。
  3. 根据权利要求2所述的方法,其特征在于,进一步包括:
    在第一定时器运行期间,在检测到N1个UE-NW Relay UE后停止第一定时器及停止执行D2D发现过程,并选择进行中继的UE-NW Relay UE,其中,N1为大于1的自然数;
    或,在第二定时器运行期间,在检测到N2个UE-NW Relay UE后停止第二定时器及停止执行D2D发现过程,并选择进行中继的UE-NW Relay UE,其中,N2为大于1的自然数。
  4. 根据权利要求3所述的方法,其特征在于,所述N1,N2的取值是预配置的,或是在协议中约定的。
  5. 根据权利要求2所述的方法,其特征在于,所述第一定时器和/或第二定时器的时长是预配置的,或是在协议中约定的。
  6. 根据权利要求1至5任一所述的方法,其特征在于,进一步包括:
    未能检测到UE-NW Relay UE时,通知高层未发现UE-NW Relay UE,并根据高层的触发指令开始执行D2D发现过程。
  7. 一种执行D2D发现过程的方法,其特征在于,包括:
    在第一D2D发现模式对应的第三定时器运行期间按照第一D2D发现模式执行D2D发现过程;
    在第一D2D发现模式对应的第三定时器超时后,按第二D2D发现模式执行D2D发现过程。
  8. 根据权利要求7所述的方法,其特征在于,所述第一D2D发现模式为UE-NW Relay discovery model A,所述第二D2D发现模式为UE-NW Relay discovery model B。
  9. 根据权利要求8所述的方法,其特征在于,按UE-NW Relay discovery model B执行D2D发现过程中,进一步包括:
    在接收到中继发现Relay discovery请求或者UE-NW Relay连接建立请求时,重启第三定时器,并在第三定时器运行期间按UE-NW Relay discovery model A执行D2D发现过程;
    按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
  10. 根据权利要求7所述的方法,其特征在于,所述第三定时器的时长是预配置的,或是在协议中约定的。
  11. 根据权利要求7至10任一所述的方法,其特征在于,按其中一个D2D发现模式执行D2D发现过程,是在UE的中继Relay功能被激活后开始执行的。
  12. 根据权利要求11所述的方法,其特征在于,UE的Relay功能是通过UE激活的,和/或基站通过信令激活的,所述信令包括以下信令之一或者组合: 物理层信令、媒体接入控制MAC信令、无线资源控制RRC信令。
  13. 一种D2D发现过程中检测中继UE的装置,其特征在于,包括:
    第一确定模块,用于确定各D2D发现模式对应的定时器;
    第一执行模块,用于在其中一个D2D发现模式对应的定时器运行期间按照该D2D发现模式执行D2D发现过程,在该模式对应的定时器超时前未能检测到UE-NW Relay UE时,则按下一个D2D发现模式在该模式对应的定时器运行期间执行D2D发现过程,直至检测到UE-NW Relay UE。
  14. 根据权利要求13所述的装置,其特征在于,第一确定模块进一步用于确定D2D发现模式包括:UE-NW Relay discovery model A与UE-NW Relay discovery model B;UE-NW Relay discovery model A对应的定时器为第一定时器,UE-NW Relay discovery model B对应的定时器为第二定时器;
    第一执行模块进一步用于在按UE-NW Relay discovery model A执行D2D发现过程在第一定时器超时前未能检测到UE-NW Relay UE时,按UE-NW Relay discovery model B在第二定时器运行期间执行D2D发现过程。
  15. 一种执行D2D发现过程的装置,其特征在于,包括:
    第二确定模块,用于确定第一D2D发现模式对应的第三定时器;
    第二执行模块,用于在第一D2D发现模式对应的第三定时器运行期间按照第一D2D发现模式执行D2D发现过程,在第一D2D发现模式对应的第三定时器超时后,按第二D2D发现模式执行D2D发现过程。
  16. 根据权利要求15所述的装置,其特征在于,第二确定模块进一步用于确定第一D2D发现模式为UE-NW Relay discovery model A,第二D2D发现模式为UE-NW Relay discovery model B;
    第二执行模块进一步用于在按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
  17. 根据权利要求16所述的装置,其特征在于,第二执行模块进一步用于在按UE-NW Relay discovery model B执行D2D发现过程中,在接收到Relay  discovery请求或者UE-NW Relay连接建立请求时,重启第三定时器,并在第三定时器运行期间按UE-NW Relay discovery model A执行D2D发现过程;在按UE-NW Relay discovery model A执行D2D发现过程在第三定时器超时后,按UE-NW Relay discovery model B执行D2D发现过程。
  18. 根据权利要求15或16、17所述的装置,其特征在于,第二执行模块进一步用于在UE的Relay功能被激活后开始按其中一个D2D发现模式执行D2D发现过程。
  19. 一种用户设备UE,其特征在于,包括:
    收发机,用于在处理器的控制下接收或发送数据;
    处理器,用于读取存储器中的程序,执行下列过程:
    确定各D2D发现模式对应的定时器;
    在其中一个D2D发现模式对应的定时器运行期间按照该D2D发现模式执行D2D发现过程;
    在该模式对应的定时器超时前未能检测到UE-NW Relay UE时,则按下一个D2D发现模式在该模式对应的定时器运行期间执行D2D发现过程,直至检测到UE-NW Relay UE。
  20. 一种用户设备UE,其特征在于,包括:
    收发机,用于在处理器的控制下接收或发送数据;
    处理器,用于读取存储器中的程序,执行下列过程:
    在第一D2D发现模式对应的第三定时器运行期间按照第一D2D发现模式执行D2D发现过程;
    在第一D2D发现模式对应的第三定时器超时后,按第二D2D发现模式执行D2D发现过程。
PCT/CN2016/079756 2015-05-15 2016-04-20 执行设备到设备发现过程及检测用户设备的方法及装置 WO2016184286A1 (zh)

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