WO2018082054A1 - Procédé et dispositif de communication - Google Patents

Procédé et dispositif de communication Download PDF

Info

Publication number
WO2018082054A1
WO2018082054A1 PCT/CN2016/104751 CN2016104751W WO2018082054A1 WO 2018082054 A1 WO2018082054 A1 WO 2018082054A1 CN 2016104751 W CN2016104751 W CN 2016104751W WO 2018082054 A1 WO2018082054 A1 WO 2018082054A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
network device
link
rrc connection
relay
Prior art date
Application number
PCT/CN2016/104751
Other languages
English (en)
Chinese (zh)
Inventor
肖潇
曹振臻
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/104751 priority Critical patent/WO2018082054A1/fr
Publication of WO2018082054A1 publication Critical patent/WO2018082054A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a communication method and a communication device.
  • wearable devices With the advent and increasing popularity of smart watches, smart bracelets, and smart glasses, wearable devices have become a popular electronic product worldwide. Wearable device-based applications and communication technologies for wearable devices have become a research hotspot in the global telecommunications industry.
  • a wearable device such as a smart watch, a wristband, or a watch usually establishes a wireless connection with a cellular network and communicates through a smart phone, so that the user can directly pass through each of the wearable devices.
  • Application Application, referred to as APP
  • APP Application
  • the network to send and receive various types of multimedia business data, to avoid the inconvenience caused by the smart phone, inconvenient to carry and other issues, convenient and fast.
  • FIG 1 shows a schematic diagram of wearable device communication.
  • the wearable device such as a smart watch or smart glasses transmits data to the smart phone through a through link; then, the smart phone acts as a relay terminal (Relay User), and the data passes through the cellular uplink (Uplink).
  • the base station is sent to the Long Term Evolution (LTE) system to complete the transmission of wearable data.
  • LTE Long Term Evolution
  • the base station sends data to the Relay UE through the downlink (Downlink), and the relay UE sends the data to the wearable device through the through link to complete data reception of the wearable device.
  • the wearable device is generally referred to as a Remote User Equipment (Remote UE).
  • Remote User Equipment Remote User Equipment
  • a communication method in which a wearable device performs relay transmission through a UE which is also referred to as a UE-to-Network Relay.
  • wearable device communication has the following two characteristics:
  • the wearable device should use the "UE-network" method as much as possible.
  • the Remote UE uses short-range communication technology to transmit data to the Relay UE through the through link, and then the Relay UE forwards the data to the base station to achieve the end. May save power.
  • the business continuity requirement The most important service type and application scenario of the wearable device is a voice call, which usually has high requirements for service continuity.
  • the wearable device may interrupt the connection with the Relay UE due to the communication range of the Relay UE (which may also be the coverage of the Relay UE), it is necessary to switch to the cellular uplink and downlink to directly communicate with the base station. In this process, the data transmission of the wearable device is required to be as short as possible to maintain business continuity.
  • the direct link between the Remote UE and the Relay UE adopts a short-distance direct-pass technology based on wifi
  • the "UE-network" relay transmission method is the currently used "wifi" hotspot technology, that is, the smart phone is turned on.
  • the "wifi hotspot” function the wearable device transmits data to the wifi hotspot via wifi, and then transmits the data to the cellular base station by the wifi hotspot; or the base station sends the data to the wifi hotspot, and the data is sent by the wifi hotspot to the wearable device through the wifi.
  • Figure 2 shows a schematic diagram of the process of "UE-network" relay transmission.
  • the Remote UE when the Remote UE is gradually away from the Relay UE, the wifi signal is gradually weakened, and the coverage of the Relay UE may be removed, resulting in interruption of communication with the Relay UE. At this time, the Remote UE will establish a connection with the base station and further continue data transmission and reception through the uplink/downlink of the base station.
  • the connection establishment with the base station is initiated, and only after the connection with the base station is established, the uplink/downlink of the base station can continue to communicate with the base station, which is
  • the data transmission is interrupted during the process of establishing a connection between the Remote UE and the base station, and the interruption time can be as long as several seconds, which seriously affects the communication performance.
  • 3GPP standardizes the "UE-network" relay technology based on LTE D2D in the Release-13 protocol version.
  • the direct link between the Relay UE and the Remote UE is a short-distance communication technology based on LTE D2D, and the air interface corresponding to the through link is referred to as a “PC5 interface”.
  • the system is A number of "resource pools" are defined on the through link; a resource pool is a collection of "time-frequency" resources.
  • the remote UE uses the resources in the resource pool to send data to the Relay UE, and the relay UE forwards the data to the base station through the uplink of the cellular network, or the base station sends the data to the Remote UE through the relay UE relay.
  • FIG. 3 is a schematic diagram of a “UE-network” relay mode based on LTE D2D.
  • the Remote UE determines data transmission and reception according to the link quality with the base station. path.
  • the Remote UE located outside the coverage of the base station or covering the edge of the base station usually connects with the Relay UE and performs data transmission and reception with the base station by means of “UE-network” relay.
  • the Remote UE moves from the coverage of the base station or the coverage edge to the coverage, if there is acceptable cellular link quality (such as RSRP/RSRP), the cellular connection will be established with the base station, and The uplink and downlink between the base stations perform subsequent data transmission and reception, and terminate the data transmission and reception through the Relay UE even if it is still within the coverage of the Relay UE.
  • the Remote UE transmits the uplink and downlink as much as possible, that is, even if the Remote UE is within the coverage of the Relay UE, as long as it Can communicate using the cellular uplink and downlink, and will not transfer data through the Relay UE.
  • the communication distance between the Relay UE and the base station is much longer than the distance between the Relay UE and the Reote UE, and thus the transmission power consumption is high. Therefore, the existing "UE-network" relay technology based on LTE D2D may cause the Remote UE to generate high transmission power consumption, and is particularly unsuitable for devices with limited battery capacity such as wearable devices.
  • the existing LTE D2D-based "UE-network" relay technology has a disadvantage in that it will cause excessively high Remote UE transmission power consumption, and is particularly unsuitable for a battery capacity limited device such as a wearable device.
  • the embodiment of the present invention provides a communication method and a communication device, which are used to implement the "UE-network" relay technology, and ensure the service continuity of the Remote UE when leaving the Relay UE under the premise of saving the power consumption of the Remote UE as much as possible.
  • an embodiment of the present invention provides a communication method, including: a first terminal communicating with a network device by using a second terminal as a relay device; and determining, by the first terminal, the first terminal and the second terminal The pass-through link quality is lower than the pass-through link quality threshold, triggering to switch data transmission from the direct link between the first terminal and the second terminal to the first terminal and the network device Uplink and/or downlink communication links between.
  • the uplink and/or downlink communication link between the first terminal and the network device ensures service continuity of communication between the first terminal and the network device, and communicates with the network device by using a relay manner as much as possible. The purpose of saving the power of the first terminal as much as possible is achieved.
  • the pass-through link quality threshold is configured by the network device to the first terminal, or pre-configured in the first terminal. Thereby, a pass-through link quality threshold can be configured for the first terminal.
  • the first terminal before the first terminal communicates with the network device by using the second terminal as the relay device, the first terminal establishes a radio resource control RRC connection with the network device by using the second terminal. Thereby, the first terminal can enable the data transmission and reception of the relay mode with the network device through the second terminal, instead of adopting the uplink or downlink of the cellular network.
  • the first terminal triggers to switch data transmission from a direct link between the first terminal and the second terminal to an uplink between the first terminal and the network device.
  • a downlink communication link comprising: the first terminal triggering using a cell radio network temporary identifier C-RNTI dedicated to the first terminal, and transmitting data from the first terminal to the second terminal
  • the pass-through link switches to an uplink and/or downlink communication link between the first terminal and the network device.
  • the first terminal after the first terminal establishes a radio resource control RRC connection with the network device, the first terminal triggers to switch data transmission from the direct link between the first terminal and the second terminal to Before the uplink and/or downlink communication link between the first terminal and the network device, the first terminal acquires, by using the second terminal, the C that is allocated by the network device to the first terminal -RNTI. Thereby, the required parameters can be provided for switching data transmissions from the through link to the uplink and/or downlink communication links between the first terminal and the network device.
  • the first terminal acquires, by using the second terminal, the C-RNTI that is allocated by the network device to the first terminal, where the first terminal acquires by using the second terminal.
  • the RRC connection reconfiguration message sent by the network device, where the RRC connection reconfiguration message carries the C-RNTI allocated to the first terminal.
  • the first terminal before the first terminal acquires, by the second terminal, the C-RNTI that is allocated by the network device to the first terminal, the first terminal passes the second terminal to the The network device sends a direct link pre-interrupt indication, where the direct link pre-interrupt indication is used to indicate that communication between the first terminal and the second terminal is about to be interrupted. Thereby, the network device can be triggered to allocate the C-RNTI to the first terminal through the through link pre-interrupt indication.
  • the first terminal acquires the through-link configured by the network device by using the second terminal Quality threshold.
  • the first terminal establishes a radio resource control RRC connection with the network device by using the second terminal, where the first terminal sends an RRC connection request message to the second terminal, where The second terminal sends the RRC connection request message to the network device; the first terminal receives an RRC connection setup message that is sent by the network device by using the second terminal, and the first terminal sends the The second terminal sends an RRC connection setup complete message, and the second terminal sends the RRC connection setup complete message to the network device.
  • the first terminal establishes an RRC connection with the network device by using the second terminal as the relay device.
  • the RRC connection request message, the RRC connection setup message, and the RRC connection setup complete message respectively carry indication information of the first terminal. Thereby enabling the second terminal and the network device to distinguish the RRC message from the first terminal.
  • the embodiment of the present invention provides a communication method, including: the network device uses the second terminal as a relay device to communicate with the first terminal; and the network device switches to use the first terminal and the network device Data transmission between the uplink and/or downlink communication link and the first terminal, wherein the first terminal determines that the direct link between the first terminal and the second terminal is of low quality After the pass-through link quality threshold, triggering to switch data transmission from the direct link between the first terminal and the second terminal to uplink and/or downlink between the first terminal and the network device Communication link.
  • the method before the network device communicates with the first terminal by using the second terminal as the relay device, the method further includes: the network device establishing a radio resource with the first terminal by using the second terminal Control RRC connection.
  • the network device after the network device establishes a radio resource control RRC connection with the first terminal by using the second terminal, the network device switches to pass between the first terminal and the network device.
  • the method further includes:
  • the network device allocates, by using the second terminal, the cell radio network temporary identifier C-RNTI dedicated to the first terminal to the first terminal.
  • the network device by using the second terminal, to allocate, to the first terminal, a cell radio network temporary identifier C-RNTI dedicated to the first terminal, including:
  • the network device sends an RRC connection reconfiguration message to the first terminal by using the second terminal, where the RRC connection reconfiguration message carries the C-RNTI allocated to the first terminal.
  • the method before the network device allocates the first terminal-specific cell radio network temporary identifier C-RNTI to the first terminal by using the second terminal, the method further includes:
  • the network device receives, by the second terminal, a through link pre-interrupt indication sent by the first terminal, where the through link pre-interrupt indication is used to indicate between the first terminal and the second terminal Communication is about to break.
  • the method before the network device switches to data transmission with the first terminal by using an uplink and/or downlink communication link between the first terminal and the network device, the method further includes :
  • the network device configures the through link quality threshold to the first terminal by using the second terminal.
  • an embodiment of the present invention provides a terminal, where the terminal has the function of implementing the foregoing first aspect and the method implementation of the second aspect, where the function may be implemented by hardware or by hardware.
  • Corresponding software implementations that include one or more modules corresponding to the functions described above.
  • the embodiment of the present invention provides a network device, where the terminal has the function of implementing the network device in the implementation of the foregoing first aspect and the second aspect, and the function may be implemented by hardware or by hardware.
  • Corresponding software implementations that include one or more modules corresponding to the functions described above.
  • an embodiment of the present invention provides a terminal, including a processor, a memory, and a transceiver, wherein a preset program is stored in the memory, and the processor reads a program in the memory, and executes the first according to the program. Aspect method.
  • an embodiment of the present invention provides a network device, including a processor, a memory, and a transceiver, where a preset program is stored in the memory, and the processor reads a program in the memory, and executes the foregoing according to the program.
  • FIG. 1 is a schematic diagram of a prior art wearable device communication
  • FIG. 2 is a schematic diagram of a process of a relay transmission of a UE-network in the prior art
  • FIG. 3 is a schematic diagram of a “UE-network” relay mode based on LTE D2D in the prior art
  • FIG. 4 is a schematic diagram of an application scenario of an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a communication process according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of maintaining service continuity in an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of another process for maintaining service continuity according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of another process for maintaining service continuity according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another terminal according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of another network device according to an embodiment of the present invention.
  • the embodiment of the present invention provides a communication method and a communication device.
  • the embodiment of the present invention establishes a communication connection with the base station directly before the Remote UE is about to leave the coverage of the Relay UE, to avoid communication interruption, and when the Remote UE is located in the coverage of the Relay UE, the relay UE transits as much as possible.
  • Data transmission and reception is performed using "UE-network" relay technology to save transmission power consumption.
  • the application scenario of the present invention is as shown in FIG. 4.
  • the scenario mainly includes a first terminal 401, a second terminal 402, and a network device 403, where the first terminal is in the coverage of the second terminal, and the second terminal is used as a relay. Communicate with network devices.
  • the embodiment of the present invention is improved based on the "UE-network" relay technology of LTE D2D.
  • the first terminal is a Remote UE and the second terminal is a Relay UE.
  • the detailed method for communicating the Remote UE with the network device is as follows:
  • Step 501 The first terminal communicates with the network device by using the second terminal as a relay device.
  • the first terminal before the first terminal communicates with the network device by using the second terminal as the relay device, the first terminal establishes radio resource control (Radio Resource Control) with the network device by using the second terminal. RRC) connection.
  • radio resource control Radio Resource Control
  • the first UE and the second terminal perform Relay UE discovery and connection establishment based on the LTE D2D technology on the sidelink. That is, the first terminal discovers the terminal existing around the first terminal through the Relay Discovery Message broadcasted by the second terminal on the through link, and the terminal that can cover the first terminal in the surrounding terminal is used as the terminal.
  • a second terminal the first terminal sends a direct communication request to the second terminal, and after the second terminal performs authentication and security verification on the first terminal according to the direct communication request, the direct link between the first terminal and the second terminal The path establishes a connection, and then the first terminal and the second terminal can perform direct data interaction through the connection established on the through link.
  • the specific process of the first terminal establishing an RRC connection with the network device by using the second terminal is: the first terminal sends an RRC connection request message to the second terminal, where the second terminal The RRC connection request message is sent to the network device; the first terminal receives an RRC connection setup message that is sent by the network device by using the second terminal, and the first terminal sends an RRC connection to the second terminal. And establishing, by the second terminal, the RRC connection setup complete message to the network device.
  • the RRC connection request message, the RRC connection setup message, and the RRC connection setup complete message respectively carry indication information of the first terminal.
  • the second terminal needs to distinguish whether the data received from the first terminal is the service data or the RRC message as the control signaling, and the specific implementation manner is: Packet Data Protocol Convergence corresponding to the RRC message.
  • the protocol data unit (Protocol Data Unit) of the protocol layer uses the value of the dedicated PDCP SDU Type, so that the second terminal can determine, according to the value, whether the encapsulated in the corresponding PDCP PDU is from the first terminal or the network device.
  • the RRC message that needs to be sent to the first terminal; or the RRC message sent by the first terminal or the RRC message sent by the first terminal to the second terminal adopts a dedicated logical channel identifier. (Logical Channel Identifier, LCID). This is only an example. The application can also be distinguished in other ways. It is not listed here.
  • Step 502 The first terminal determines that the quality of the direct link between the first terminal and the second terminal is lower than the quality of the through link, and triggers data transmission from the first terminal and the second terminal.
  • the pass-through link between the two switches to an uplink and/or downlink communication link between the first terminal and the network device.
  • the quality of the through link may be characterized by a combination of one or more of the following parameters: Slinking Reference Signal Received Power (S-RSRP), Relay in LTE D2D technology Discover the signal strength of the message, etc.
  • S-RSRP Slinking Reference Signal Received Power
  • Relay in LTE D2D technology Discover the signal strength of the message, etc.
  • the measurement manner of the quality of the through link is not limited. Specifically, the measurement may be performed according to the configuration of the network device, for example, periodically according to the configured measurement period.
  • the pass-through link quality threshold is configured by the network device to the first terminal, or pre-configured in the first terminal. Specifically, the first terminal acquires the through link quality threshold configured by the network device by using the second terminal. In the embodiment of the present invention, when the quality of the through link between the first terminal and the second terminal is lower than the quality threshold of the through link, the first terminal and the second terminal are configured by the reasonable configuration of the quality threshold of the through link.
  • the communication can be continued, so as to ensure that the first terminal can perform data transmission with the network device by using the second terminal as the relay device in the process of establishing the RRC connection with the base station, thereby ensuring that the first terminal is leaving the second terminal. Business continuity when covering.
  • the first terminal triggers the Cell Radio Network Temporary Identity (C-RNTI), which is used by the first terminal, to transmit data from the first terminal and the second terminal.
  • C-RNTI Cell Radio Network Temporary Identity
  • the pass-through link between the two ends is switched to an uplink and/or downlink communication link between the first terminal and the network device, and the network device performs data transmission through an uplink and/or downlink communication link.
  • the first terminal establishes a radio resource control RRC connection with the network device by using the second terminal. After receiving, the first terminal acquires, by the second terminal, the C-RNTI allocated by the network device to the first terminal.
  • the first terminal acquires an RRC connection reconfiguration message sent by the network device by using the second terminal, where the RRC connection reconfiguration message carries a location allocated to the first terminal. Said C-RNTI.
  • the first terminal sends a through link pre-interrupt indication to the network device by using the second terminal, where the direct link pre-interrupt indication is used to indicate the first terminal and the second terminal
  • the communication between the two is about to be interrupted; the network device allocates the C-RNTI to the first terminal through the second terminal. For example, if the signal strength of the first terminal on the through link is lower than a preset threshold or leaves the coverage of the second terminal, it is determined that the communication between the first terminal and the second terminal is about to be interrupted.
  • Step 503 The network device switches to perform data transmission with the first terminal by using an uplink and/or downlink communication link between the first terminal and the network device.
  • the first terminal determines that the quality of the direct link between the first terminal and the second terminal is lower than the quality threshold of the through link in the process of performing data communication between the second terminal and the network device. Transmitting the data transmission from the through link to the uplink and/or downlink communication link between the first terminal and the network device, so that the first terminal can be avoided because the power of the first terminal is saved as much as possible Mobility causes data transmission interruption, which ensures the business continuity of the first terminal.
  • the first specific embodiment, as shown in FIG. 6, the specific process of maintaining business continuity is as follows:
  • Step 1 The Remote UE and the Relay UE perform Relay UE discovery and connection establishment based on the existing LTE D2D technology on the direct link.
  • This step directly multiplexes the related mechanisms and process implementations in the existing LTE D2D-based "UE-network" relay technology.
  • the Relay Discovery Message broadcasted by the Remote UE over the direct link through the Relay UE (Relay Discovery Message) ), discovering the Relay UE that exists around, and Located in the coverage of the Relay UE; the Remote UE sends a direct communication request to the Relay UE, and the Remote UE authenticates and securely authenticates the Remote UE.
  • the Remote UE After the Remote UE establishes a connection with the Relay UE's direct communication link, the Remote UE Direct data interaction with the Relay UE.
  • the Remote UE can perform data transmission and reception with the Relay UE on the through link, and then realize data transmission with the base station through the "UE-network" relay technology.
  • Step 2 The Remote UE measures the quality of the through link between the Remote UE and the Relay UE by using the correlation signal strength with the Relay UE.
  • the quality of the pass-through link has multiple manifestations, including but not limited to the following, and the short-link reference signal received power (S-RSRP) strength or Relay discovery message in the LTE D2D. Signal strength.
  • the Remote UE obtains the quality of the through link between the Remote UE and the Relay UE by measuring the signal strength of the through link reference signal received power or the Relay discovery message.
  • the Remote UE periodically and continuously performs measurement of the quality of the through link.
  • the specific measurement period is configured by the base station by using a radio resource control (RRC) reconfiguration message (RRC Connection Reconfiguration), and the measurement period depends on the implementation of the network device, and is not specifically limited herein.
  • RRC radio resource control
  • Step 3 The Remote UE adopts a “UE-network” relay technology, and establishes an RRC connection with the base station by means of relay UE relay.
  • the RRC connection establishment process multiplexes the RRC connection establishment related procedure and the RRC message in the existing LTE system, and the only difference is that the Remote UE performs the RRC message interaction related to the RRC connection establishment by the relay UE in the relay UE transit mode. Instead of directly interacting with the base station through the uplink and downlink of the cellular network of the LTE system, the RRC message is directly exchanged.
  • the Remote UE sends an RRC Connection Request message to the Relay UE through the through link, and the Relay UE forwards the RRC connection request message to the base station through the uplink; the base station uses the downlink to The Relay UE sends an RRC Connection Setup message, and the Relay UE forwards the RRC connection setup message to the Remote UE; the Remote UE sends the RRC Connection Setup Complete to the Relay UE.
  • the Connection Setup Complete message is forwarded by the Relay UE to the base station to complete the RRC connection establishment process of the Remote UE.
  • the Relay UE distinguishes whether the data received from the Remote UE is service data or an RRC message as control signaling.
  • the specific distinguishing method is that the value of the dedicated PDCP SDU Type (for example, "111" is used in the Protocol Data Unit (PDU) of the Packet Data Convergence Protocol (PDCP) protocol layer corresponding to the RRC message.
  • the relay UE can determine, by using the value, that the encapsulated data in the PDCP PDU is from the Remote UE, or that the encapsulated data in the PDCP PDU is sent by the base station to the Remote UE; or the RRC sent to the Remote UE or sent to the Remote UE.
  • the message is identified by a dedicated Logical Channel Identifier (LCID). It should be noted that the description is not intended to limit the scope of the present invention.
  • LCID Logical Channel Identifier
  • the Remote UE can only perform data transmission and reception based on the “UE-network” relay by using the Relay UE and the base station, instead of directly performing uplink and downlink communication with the base station.
  • Step 4 After the RRC connection of the Remote UE is established, the base station sends an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message to the Remote UE by using the relay UE transit mode, where the RRC connection reconfiguration message includes at least: a pass-through link quality threshold. And the C-RNTI dedicated to Remote UE.
  • RRC Connection Reconfiguration RRC Connection Reconfiguration
  • the base station sends the RRC connection reconfiguration message to the Remote UE by means of relay UE relay.
  • the relay UE may use the method listed in step 3 to determine that the RRC connection reconfiguration message is received from the base station, instead of the service data, and forward the RRC connection reconfiguration message to the Remote UE.
  • the RRC connection reconfiguration message includes at least a pass-through link quality threshold and a C-RNTI.
  • the RRC connection reconfiguration message may also include other information in the RRC connection reconfiguration message in other existing LTE systems.
  • the specific parameters used by the through link correspond to step 2 (eg, S-RSRP strength, signal strength of Relay discovery message, or others). Specifically, the specificity of the quality threshold of the through link is taken. The value depends on the specific implementation of the base station, and is not specifically limited herein.
  • Step 5 The Remote UE determines whether the measured pass-through link quality is lower than the pass-through link quality threshold configured by the base station, and if yes, the Remote UE initiates an RRC connection establishment procedure with the base station, and uses the C allocated by the base station. - RNTI, the data transmission is transferred from the Relay UE through link to the uplink and downlink of the cellular network, and the subsequent data is directly transmitted and received with the base station.
  • the Remote UE is triggered to establish an RRC connection with the base station, and the service data is from the Relay link being used ("UE - Network "relay" is switched to the uplink and downlink of the cellular network, and subsequent data transmission is directly performed with the base station.
  • the pass-through link quality is lower than the pass-through link quality threshold configured by the base station, indicating that the Remote UE signal is weak, and may soon leave the coverage of the Relay UE, thereby triggering an RRC connection establishment process between the Remote UE and the base station, and Data is transferred to the uplink and downlink of the cellular network for transmission.
  • the reasonable quality of the pass-through link quality threshold between the Remote UE and the Relay UE is such that the quality of the direct link between the Remote UE and the Relay UE is not lower than the quality of the pass-through link.
  • Communicating with the Relay UE, and making the quality of the direct link between the Remote UE and the Relay UE lower than the pass-through link quality threshold, and the data transmission based on the "UE-network" relay by the Relay UE is not interrupted.
  • the Remote UE can still perform data transmission based on the “UE-network” relay through the Relay UE during the establishment of the RRC connection with the base station. Business continuity when the Remote UE leaves the Remote UE.
  • Steps 1 to 3 are the same as the first embodiment.
  • Step 4 After the RRC connection of the Remote UE is established, the base station sends an RRC connection reconfiguration message to the Remote UE by using the relay UE transit mode, where the RRC connection reconfiguration message includes at least a pass link quality threshold.
  • the base station in this step does not need to allocate a dedicated UE for the Remote UE. C-RNTI.
  • Step 5 The Remote UE reports the through link quality measurement report to the base station by means of the Relay UE transit.
  • the pass-through link quality can be reported by the existing RRC message measurement report (MeasurmentReport).
  • the specific reporting frequency can be configured by the base station through the RRC connection reconfiguration message (as in step 4), depending on the network implementation. No specific restrictions are imposed.
  • Step 6a The base station determines, according to the measurement report of the Remote UE, whether the quality of the direct link between the Remote UE and the Relay UE is lower than the pass-through link quality threshold configured in step 4, and if yes, configures a dedicated C for the Remote UE. -RNTI.
  • the pass-through link quality between the Remote UE and the Relay UE is lower than the configured pass-through link quality threshold, and the trigger base station configures the dedicated C-RNTI for the Remote UE.
  • Step 6b the Remote UE determines whether the quality of the through link with the remaining Relay UE is lower than the pass link quality threshold configured in step 4, and if yes, and has received the C-RNTI configured by the base station, the Remote UE initiates The RRC connection with the base station is established, and the data transmission is transferred from the direct link of the Relay UE to the uplink and downlink of the cellular network by using the C-RNTI allocated by the base station, and the subsequent data is directly transmitted and received with the base station.
  • the condition that the Remote UE allows to use the uplink and downlink of the cellular network for communication is that the quality of the through link with the Relay UE is lower than the quality of the through link configured by the base station, and the configuration of the base station is received.
  • C-RNTI these two conditions are indispensable.
  • the specific embodiment is different from the second embodiment in that the third embodiment does not require the Remote UE to report the measurement report of the through link quality to the base station through the Relay UE.
  • Steps 1 to 4 are the same as the second embodiment.
  • the remote UE determines whether the quality of the through link between the remaining and the relay UE is lower than the quality of the through link configured in the step 4, and if yes, reports the through link to the base station through the relay UE transit mode. Interrupt indication message.
  • the remote UE finds that the quality of the direct link is lower than the quality of the pass-through link configured by the base station, and triggers the remote UE to send a direct link pre-interrupt indication message to the base station, where the direct link pre-interrupt indication message is used to notify the base station of the Remote UE.
  • the signal on the through link is weak, the communication with the Relay UE is about to be interrupted, and the coverage of the Relay UE is about to leave.
  • the direct link pre-interrupt indication message may be sent to the base station by using an RRC message, or may be sent to the base station by using a Medium Access Control (MAC) protocol layer control element (Control Element, CE). No specific restrictions are imposed.
  • MAC Medium Access Control
  • the remote UE does not need to perform measurement reporting on the through link to the base station because the direct link pre-interrupt indication message is introduced.
  • Step 6a After receiving the through link pre-interrupt indication message, the base station configures a dedicated C-RNTI for the Remote UE.
  • the base station pre-interrupt indication message triggers the base station to configure a dedicated C-RNTI for the Remote UE.
  • Step 6b The Remote UE receives the C-RNTI configured by the base station, and uses the C-RNTI allocated by the base station to transfer the data transmission from the Relay UE through link to the uplink and downlink of the UE, and directly performs subsequent data transmission and reception with the base station.
  • an embodiment of the present invention provides a terminal.
  • the terminal is mainly include:
  • the communication module 901 is configured to communicate with the network device by using the second terminal as a relay device;
  • the processing module 902 is configured to determine that a pass-through link quality between the terminal and the second terminal is lower than a pass-through link quality threshold, and trigger a data transmission from the terminal to the second terminal The link switches to an uplink and/or downlink communication link between the terminal and the network device.
  • an embodiment of the present invention provides a network device.
  • the network device For a specific implementation of the network device, refer to the related description of the network device in the method embodiment, and details are not repeated herein.
  • the network As shown in FIG. 10, the network is not shown.
  • the equipment mainly includes:
  • the communication module 1001 is configured to communicate with the first terminal by using the second terminal as a relay device.
  • the processing module 1002 is configured to switch the communication module to perform data transmission with the first terminal by using an uplink and/or downlink communication link between the first terminal and the network device, where After determining that the direct link quality between the first terminal and the second terminal is lower than a pass-through link quality threshold, the first terminal triggers data transmission from the first terminal to the second terminal The pass-through link switches to an uplink and/or downlink communication link between the first terminal and the network device.
  • an embodiment of the present invention provides a terminal.
  • the terminal mainly
  • the processor 1101 is configured to receive and transmit data under the control of the processor 1101.
  • the memory 1102 stores a preset program, and the processor 1101 reads the memory 1102. Program, according to the program to perform the following process:
  • the processor is configured to perform the functions of the processing module of the terminal in the above embodiment, and the processor controls the transceiver to perform the functions of the communication module of the terminal in the above embodiment.
  • an embodiment of the present invention provides a network device.
  • the device mainly includes a processor 1201 for receiving and transmitting data under the control of the processor 1201, a preset program stored in the memory 1202, and a processor 1201 reading the memory 1202. In the program, follow the procedure to perform the following process:
  • the transceiver to perform data transmission with the first terminal through an uplink and/or downlink communication link between the first terminal and the network device, wherein the first terminal determines the After the pass-through link quality between the first terminal and the second terminal is lower than the pass-through link quality threshold, triggering to switch data transmission from the direct link between the first terminal and the second terminal to the An uplink and/or downlink communication link between the first terminal and the network device.
  • the processor is configured to perform the functions of the processing module of the network device in the above embodiment, and the processor controls the transceiver to perform the functions of the processing module in the above embodiment.
  • the network device is a base station.
  • the processor, the memory and the transceiver are connected by a bus, and the bus architecture may include any number of interconnected buses and bridges, specifically represented by one or more processors and memories represented by the processor.
  • the various circuits of the memory are linked together.
  • 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 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 processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.
  • 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.

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif de communication, destinés à être utilisés pour assurer la continuité de service lorsqu'un UE distant quitte la couverture d'un UE relais sur l'hypothèse qu'une technologie de relais « UE-réseau » est mise en œuvre et que la consommation d'énergie de l'UE distant est réduite autant que possible. Le procédé comprend les étapes suivantes : un premier terminal communique avec un dispositif de réseau en utilisant un deuxième terminal en tant que dispositif relais ; et lorsque le premier terminal détermine que la qualité d'une liaison par connexion directe entre le premier terminal et le deuxième terminal est inférieure à un seuil de qualité de liaison par connexion directe, le premier terminal déclenche le transfert de la transmission de données depuis la liaison par connexion directe entre le premier terminal et le deuxième terminal vers une communication par liaison montante et/ou liaison descendante entre le premier terminal et le dispositif de réseau.
PCT/CN2016/104751 2016-11-04 2016-11-04 Procédé et dispositif de communication WO2018082054A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/104751 WO2018082054A1 (fr) 2016-11-04 2016-11-04 Procédé et dispositif de communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/104751 WO2018082054A1 (fr) 2016-11-04 2016-11-04 Procédé et dispositif de communication

Publications (1)

Publication Number Publication Date
WO2018082054A1 true WO2018082054A1 (fr) 2018-05-11

Family

ID=62076294

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/104751 WO2018082054A1 (fr) 2016-11-04 2016-11-04 Procédé et dispositif de communication

Country Status (1)

Country Link
WO (1) WO2018082054A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112789941A (zh) * 2019-04-30 2021-05-11 Oppo广东移动通信有限公司 一种信息处理方法、设备及存储介质
CN112866965A (zh) * 2021-01-18 2021-05-28 恒玄科技(上海)股份有限公司 一种智能眼镜
CN113630821A (zh) * 2020-05-09 2021-11-09 华为技术有限公司 通信方法及装置
CN113711641A (zh) * 2021-07-19 2021-11-26 北京小米移动软件有限公司 一种中继终端设备测量上报的方法及其装置
WO2022022661A1 (fr) * 2020-07-31 2022-02-03 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil de connexion radio
WO2023169451A1 (fr) * 2022-03-08 2023-09-14 华为技术有限公司 Procédé et appareil de communication et support d'informations

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102469410A (zh) * 2010-11-02 2012-05-23 中国移动通信集团公司 一种数据传输方法、设备及系统
CN102811497A (zh) * 2011-06-03 2012-12-05 中国移动通信集团公司 一种接入网络的方法、终端及系统
CN103747507A (zh) * 2014-01-28 2014-04-23 宇龙计算机通信科技(深圳)有限公司 通信模式的选择方法和选择装置、终端、基站
CN103781016A (zh) * 2014-01-28 2014-05-07 宇龙计算机通信科技(深圳)有限公司 通信模式的选择方法和选择装置、终端
CN103781017A (zh) * 2014-01-28 2014-05-07 宇龙计算机通信科技(深圳)有限公司 无线通信方法、无线通信装置、基站和终端
CN104869526A (zh) * 2015-04-10 2015-08-26 电信科学技术研究院 一种设备到设备通信及其资源分配方法、设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102469410A (zh) * 2010-11-02 2012-05-23 中国移动通信集团公司 一种数据传输方法、设备及系统
CN102811497A (zh) * 2011-06-03 2012-12-05 中国移动通信集团公司 一种接入网络的方法、终端及系统
CN103747507A (zh) * 2014-01-28 2014-04-23 宇龙计算机通信科技(深圳)有限公司 通信模式的选择方法和选择装置、终端、基站
CN103781016A (zh) * 2014-01-28 2014-05-07 宇龙计算机通信科技(深圳)有限公司 通信模式的选择方法和选择装置、终端
CN103781017A (zh) * 2014-01-28 2014-05-07 宇龙计算机通信科技(深圳)有限公司 无线通信方法、无线通信装置、基站和终端
CN104869526A (zh) * 2015-04-10 2015-08-26 电信科学技术研究院 一种设备到设备通信及其资源分配方法、设备

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112789941A (zh) * 2019-04-30 2021-05-11 Oppo广东移动通信有限公司 一种信息处理方法、设备及存储介质
CN113891285A (zh) * 2019-04-30 2022-01-04 Oppo广东移动通信有限公司 一种信息处理方法、设备及存储介质
CN112789941B (zh) * 2019-04-30 2023-12-05 Oppo广东移动通信有限公司 一种信息处理方法、设备及存储介质
US12082270B2 (en) 2019-04-30 2024-09-03 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Information processing method, and first and second terminal devices
CN113630821A (zh) * 2020-05-09 2021-11-09 华为技术有限公司 通信方法及装置
CN113630821B (zh) * 2020-05-09 2023-03-10 华为技术有限公司 通信方法及装置
WO2022022661A1 (fr) * 2020-07-31 2022-02-03 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil de connexion radio
EP4190033A4 (fr) * 2020-07-31 2024-08-21 Ericsson Telefon Ab L M Procédé et appareil de connexion radio
CN112866965A (zh) * 2021-01-18 2021-05-28 恒玄科技(上海)股份有限公司 一种智能眼镜
CN112866965B (zh) * 2021-01-18 2023-05-12 恒玄科技(上海)股份有限公司 一种智能眼镜
CN113711641A (zh) * 2021-07-19 2021-11-26 北京小米移动软件有限公司 一种中继终端设备测量上报的方法及其装置
WO2023169451A1 (fr) * 2022-03-08 2023-09-14 华为技术有限公司 Procédé et appareil de communication et support d'informations

Similar Documents

Publication Publication Date Title
US11778684B2 (en) Indicating tracking area update (TAU) while in RRC inactive state
CN108924949B (zh) 无线网络中的通信方法、装置和系统
CN107645779B (zh) 一种数据发送、传输方法及装置
WO2018082054A1 (fr) Procédé et dispositif de communication
CN113475109B (zh) 随着rrc恢复完成之类的消息的早期测量报告
US11284468B2 (en) Suspending/resuming measurements in RRC inactive state
WO2020167205A1 (fr) Rapport de mesure précoce avec message de demande de reprise rrc et indication de demande de mesures précoces associées à la radiomessagerie
US11696355B2 (en) System and method for indicating coverage types for user devices in dual connectivity wireless networks
US20160007336A1 (en) Mobile communication system, user terminal, and base station
US10993149B2 (en) Operating a terminal device in a cellular mobile communication network
WO2021018283A1 (fr) Procédé de communication et appareil de communication
WO2021104192A1 (fr) Procédé de communication et dispositif de communication
WO2018068358A1 (fr) Procédé et dispositif de commutation de trajet
CN113286331A (zh) 重建立的方法和通信装置
CN115885575A (zh) 无线通信方法和通信装置
WO2021000688A1 (fr) Procédé et appareil d'émission et de réception d'informations de capacité
US11265937B2 (en) Device discovery in a device to device communication using two types of discovery
WO2021042387A1 (fr) Procédé, dispositif et appareil de communication
CN112770366B (zh) 一种通信方法与通信装置
WO2024071081A1 (fr) Dispositif de communication, station de base et procédé de communication
WO2023102907A1 (fr) Procédé de communication sans fil, premier terminal et dispositif de réseau
WO2024071079A1 (fr) Station de base et procédé de communication
CN117751623A (zh) 无线通信方法及无线通信装置
CN116471687A (zh) 一种传输数据的方法和装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16920676

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16920676

Country of ref document: EP

Kind code of ref document: A1