WO2020034470A1 - Augmentation de l'efficacité dans les communications sans fil - Google Patents

Augmentation de l'efficacité dans les communications sans fil Download PDF

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Publication number
WO2020034470A1
WO2020034470A1 PCT/CN2018/115570 CN2018115570W WO2020034470A1 WO 2020034470 A1 WO2020034470 A1 WO 2020034470A1 CN 2018115570 W CN2018115570 W CN 2018115570W WO 2020034470 A1 WO2020034470 A1 WO 2020034470A1
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WIPO (PCT)
Prior art keywords
communication node
efficiency
ratio
communication
user device
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Application number
PCT/CN2018/115570
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English (en)
Inventor
Qian Dai
He Huang
Jianxun Ai
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Zte Corporation
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Publication date
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Priority to CN201880099419.3A priority Critical patent/CN112997523B/zh
Priority to PCT/CN2018/115570 priority patent/WO2020034470A1/fr
Publication of WO2020034470A1 publication Critical patent/WO2020034470A1/fr

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/0215Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/0215Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • H04W28/0221Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices power availability or consumption
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0251Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/15Setup of multiple wireless link connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • H04W88/085Access point devices with remote components
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This patent document is directed generally to wireless communications.
  • This patent document describes, among other things, techniques for increasing power, spectrum, or transmission efficiency in dual-connection or multi-connection scenarios. Techniques are also described to improve spectrum efficiency when duplicated transmissions are used in single-connection, dual-connection, or multi-connection scenarios.
  • a wireless communication method includes receiving, by a communication node, a report from a communication apparatus.
  • the report indicates a power efficiency or a spectrum efficiency of the communication apparatus.
  • the method also includes determining, by the communication node, resource scheduling according to the report.
  • a wireless communication method in another example aspect, includes detecting, by a communication apparatus, a power efficiency or a spectrum efficiency of the communication apparatus. The method also includes transmitting, by the communication apparatus, a report to a communication node indicating the power efficiency or the spectrum efficiency of the communication apparatus.
  • a wireless communication method includes receiving, by a user device, one or more parameters from a communication node for configuring duplicated transmissions to be performed by the user device. The method also includes performing, by the user device, duplicated transmissions according to the one or more parameters.
  • the one or more parameters includes at least one of: a packet size limitation for duplicated transmissions, an indicator to enable or disable the packet size limitation, a condition upon which duplicated transmissions are to be performed, or a time offset threshold for the duplicated transmissions over one or more links or one or more carriers.
  • a wireless communication method includes transmitting, from a communication node, one or more parameters to a user device for configuring duplicated transmissions to be performed by the user device.
  • the one or more parameters includes at least one of: a packet size limitation for duplicated transmissions, an indicator to enable or disable the packet size limitation, a condition upon which duplicated transmissions can be performed, or a time offset threshold for the duplicated transmissions over one or more links or one or more carriers.
  • a communication apparatus in another example aspect, includes a processor that is configured to implement an above-described method.
  • a computer-program storage medium includes code stored thereon.
  • the code when executed by a processor, causes the processor to implement a described method.
  • FIG. 1 shows an example architecture of a 5G Radio Access Network (RAN) .
  • RAN Radio Access Network
  • FIG. 2 shows an example of a dual-connectivity (DC) architecture of the 5G system.
  • FIG. 3 is a flowchart representation of a wireless communication method in accordance with one or more embodiments of the present technology.
  • FIG. 4 is a flowchart representation of another wireless communication method in accordance with one or more embodiments of the present technology.
  • FIG. 5 is a flowchart representation of another wireless communication method in accordance with one or more embodiments of the present technology.
  • FIG. 6 is a flowchart representation of another wireless communication method in accordance with one or more embodiments of the present technology.
  • FIG. 7 shows an example messaging procedure for reporting power and/or spectrum efficiency in accordance with one or more embodiments of the present technology.
  • FIG. 8 shows an example intra-CU inter-DU dual connection architecture.
  • FIG. 9 shows another example messaging procedure for reporting power and/or spectrum efficiency in accordance with one or more embodiments of the present technology.
  • FIG. 10 shows another example messaging procedure for reporting power and/or spectrum efficiency in accordance with one or more embodiments of the present technology.
  • FIG. 11 shows an example messaging procedure for configuring a duplicated transmission to increase efficiency in accordance with one or more embodiments of the present technology.
  • FIG. 12 shows an example of a wireless communication system where techniques in accordance with one or more embodiments of the present technology can be applied.
  • FIG. 13 is a block diagram representation of a portion of a radio station in accordance with one or more embodiments of the present technology can be applied.
  • Section headings are used in the present document only to improve readability and do not limit scope of the disclosed embodiments and techniques in each section to only that section. Certain features are described using the example of 5G wireless protocol. However, applicability of the disclosed techniques is not limited to only 5G wireless systems.
  • NR New Radio
  • FIG. 1 shows an example architecture of a 5G Radio Access Network (RAN) .
  • the 5G architecture includes a 5G core network (5GC) 101 and a NG RAN 102.
  • the NG-RAN 102 includes a set of one or more base stations 103 (e.g., gNBs) connected to the 5GC through the NG interface.
  • a gNB 103 can support frequency division duplex (FDD) mode, time division duplex (TDD) mode, or dual connectivity mode operations.
  • the set of gNBs can be interconnected through the Xn interface.
  • a gNB may include a gNB Centrialized Unit (CU) 104 and one or more gNB Distributed Units (DUs) 105.
  • a gNB-CU 104 and a gNB-DU 105 is connected via F1 interface.
  • the forward network interface can be divided based on transmission capacity, transmission delay, and/or ease of deployment.
  • the delay-insensitive network function can be placed on a network element such as in a CU and a delay-sensitive network function can be placed on another network element, such as a DU.
  • the left gNB is not split into CU and DU, whereas the right gNB is split into CU and DU.
  • This decision whether to split the gNB can be based on an operator’s network deployment requirements.
  • An example of the division of CU and DU functions in the protocol stack is that the CU can include Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) functions and the DU can include RLC, MAC, and PHY functions.
  • RRC Radio Resource Control
  • PDCP Packet Data Convergence Protocol
  • FIG. 2 shows an example of a dual-connectivity (DC) architecture of the 5G system.
  • a DC system may include two or more network-side nodes that provide data connectivity to or from User Equipment (UEs) .
  • the network nodes may include master and secondary nodes.
  • the network nodes in a DC system may include an eNB and a gNB or other types of serving network nodes that provide wireless connectivity to UEs.
  • the current serving base station e.g., network element A as shown in FIG. 2 can select a suitable wireless channel for the UE.
  • the network element A can select a wireless channel having a quality that meets or exceeds a certain threshold.
  • a second base station e.g., network element B as shown in FIG. 2
  • the two base stations can jointly provide radio resources for the UE to perform user plane data transmission.
  • a first NG control plane (NG-C) can be established between the network element A and the Next Generation Core Network (NG-CN)
  • NG-CN Next Generation Core Network
  • NG-U Next Generation Core Network
  • the network element A and the network element B can be connected by an ideal or non-ideal interface called an Xn interface.
  • the network element A and the network element B may provide the same or different Radio Access Technology (RAT) , and relatively independent scheduling of UEs.
  • RAT Radio Access Technology
  • the network element A connected to the control plane of the core network can be referred to as a master node, and the core network can have only the user plane connection even if there may be no user plane connection with the core network in some cases.
  • the network element B can be referred to as a secondary node. If there are more than two network elements connected to the UE, all nodes except the master node are called secondary nodes.
  • the multi-RAT dual connection refers to a dual connectivity architecture where the master node and the secondary node can be access points of different radio access technologies.
  • one access point can be a NR RAN node (e.g., gNB) and another access point can be an LTE RAN node (e.g., eNB) .
  • the eNB and the gNB can be connected to a 5G core network at the same time.
  • a dual connectivity scenario can include both the primary node and the secondary node as NR RAN nodes (e.g., gNB) .
  • MC Multi-Connection
  • UE can simultaneously support more than two radio interface connections.
  • SNs Secondary Nodes
  • MN Master Node
  • Packet Data Convergence Protocol (PDCP) duplication is introduced as a robustness enhancement scheme in both LTE and NR protocol.
  • the PDCP layer of the transmitting side sends the same PDCP Protocol Data Unit (PDU) packets to two RLC entities.
  • PDU Packet Data Convergence Protocol
  • the two RLC entities used for the PDCP duplication can be configured in two carriers in case of LTE/NR standalone deployment, or in two carriers which belong to different access network nodes in case of dual-connection. Duplicated transmission can improve the demodulation performance but at the cost of more radio resource usage.
  • FIG. 3 is a flowchart representation of a wireless communication method 300 in accordance with one or more embodiments of the present technology.
  • the method 300 includes, at step 301, receiving, by a communication node, a report from a communication apparatus.
  • the report indicates a power efficiency or a spectrum efficiency of the communication apparatus.
  • the method 300 includes, at step 302, determining, by the communication node, resource scheduling according to the report.
  • FIG. 4 is a flowchart representation of a wireless communication method 400 in accordance with one or more embodiments of the present technology.
  • the method 400 includes, at step 401, detecting, by a communication apparatus, a power efficiency or a spectrum efficiency of the communication apparatus.
  • the method 400 includes, at step 402, transmitting, by the communication apparatus, a report to a communication node indicating the power efficiency or the spectrum efficiency of the communication apparatus.
  • the communication node includes a master communication node and the communication apparatus includes a secondary communication node, wherein the master communication node and the secondary communication node connect to a user device simultaneously.
  • the communication node includes a Central Unit and the communication apparatus includes a Distributed Unit. In some embodiments, the communication node includes an access node and the communication apparatus includes a user device.
  • FIG. 5 is a flowchart representation of a wireless communication method 1200 in accordance with one or more embodiments of the present technology.
  • the method 1200 includes, at step 501, receiving, by a user device, one or more parameters from a communication node for configuring duplicated transmissions to be performed by the user device.
  • the method 1200 includes, at step 502, performing, by the user device, duplicated transmissions according to the one or more parameters.
  • the one or more parameters includes at least one of the following: a packet size limitation for duplicated transmissions, an indicator to enable or disable the packet size limitation, a condition upon which duplicated transmissions are to be performed, or a time offset threshold for the duplicated transmissions over one or more links or one or more carriers.
  • FIG. 6 is a flowchart representation of a wireless communication method 600 in accordance with one or more embodiments of the present technology.
  • the method 600 includes, at step 601, transmitting, from a communication node, one or more parameters to a user device for configuring duplicated transmissions to be performed by the user device.
  • the one or more parameters includes at least one of the following: a packet size limitation for duplicated transmissions, an indicator to enable or disable the packet size limitation, a condition upon which duplicated transmissions can be performed, or a time offset threshold for the duplicated transmissions over one or more links or one or more carriers.
  • This embodiment demonstrates how the network side can exchange the efficiency information and use it in the dual-connection scenarios.
  • the UE simultaneously connects to two network elements (e.g., as shown in FIG. 2) .
  • the network element A also referred to as the master node (MN)
  • MN master node
  • the network element b is referred to as the secondary node (SN) .
  • the MN and SN can use the same Radio Access Technology (RAT) type or different RAT types.
  • RAT Radio Access Technology
  • LTE Long Term Evolution
  • NR Alternatively, both can be NR.
  • the core network can be either Evolved Packet Core (EPC) or 5GC network.
  • EPC Evolved Packet Core
  • FIG. 7 shows an example messaging procedure for reporting power and/or spectrum efficiency in accordance with one or more embodiments of the present technology.
  • Step 701 The MN configures and sends one or more thresholds for triggering the efficiency info reporting to the SN.
  • the one or more thresholds can include at least one of the following:
  • the threshold for a power efficiency can be indicated by a ratio of transmitted bit for each power consumption unit.
  • the ratio of transmitted bit per power consumption e.g., watt
  • the ratio of transmitted bit per power consumption indicates how much power is used, on average, to send a certain number of traffic bits, e.g. one data bit, (not including the control channel bits) .
  • the threshold can be defined with one of the following granularities: per connection, per cell group, per cell, per carrier, per PDU session, per Quality of Service (QoS) flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • QoS Quality of Service
  • the ratio is determined based on all cells or all carriers configured in the SN for the given UE.
  • the ratio is determined based on each cell configured in the SN for the given UE.
  • the granularity of per carrier the ratio is determined based on each carrier configured in the SN for the given UE.
  • the threshold of a transmission time ratio can be a ratio between the transmission time and the connection time, or a ratio between the transmission time and the connection active time.
  • the transmission time can be defined as the time during which transmitting or receiving of the traffic data is performed.
  • the active time can be defined as the time that a user device is monitoring the downlink control channel or transmitting the uplink control channel information, during which the traffic data may or may not be transmitted or received.
  • the threshold can be defined with one of the following granularities: per connection, per cell group, per cell, per carrier, per PDU session, per Qos flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • the threshold can be used by the receiving side to determine when to trigger the reporting of transmission time ratio according to the granularity.
  • the threshold of a spectrum efficiency can be indicated based on how much radio resources (e.g. bandwidth, or resource blocks, or other resource units) is used, on average, for transmitting a certain amount of data bits (not including the control channel bits) .
  • the spectrum efficiency can be indicated by bits per Hz.
  • the threshold can be defined with one of the following granularities: per connection, per cell group, per cell, per carrier, per PDU session, per Quality of Service (QoS) flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • QoS Quality of Service
  • the threshold can be used by the receiving side to decide when to trigger the reporting of the spectrum efficiency according to the granularity.
  • the MN also configures the period of sending the efficiency report.
  • Step 702 Based on the configuration that SN receives from the MN, the SN determines if the condition of triggering the efficiency reporting has been met. For example, the SN can trigger the reporting when the ratio of transmitted bit per power consumption is below a first threshold, when the ratio of transmission time is below a second threshold, or when the spectrum efficiency is below a third threshold. In some embodiments, transmitting the report can be triggered periodically. For example, the SN can use a timer to track whether it can trigger the reporting when the timer expires according to the period of reporting indicated by the MN.
  • first, second, and third thresholds can be the thresholds that SN receives from the MN.
  • the SN can determine the threshold values by itself.
  • Step 703 The SN sends the efficiency information to the MN.
  • the efficiency information includes at least one of the following:
  • the power efficiency can be indicated by a ratio of transmitted bit for each power consumption unit.
  • the ratio of transmitted bit for each power consumption unit can be determined based on the granularity indicated by the MN.
  • the ratio is determined based on all cells or all carriers configured in the SN for the given UE.
  • the ratio is determined based on each cell configured in the SN for the given UE.
  • the ratio is determined based on each carrier configured in the SN for the given UE.
  • a ratio of transmission time can be indicated by a ratio between the transmission time and connection time, or a ratio between the transmission time and connection active time as discussed above.
  • the ratio can be determined based on the granularity indicated by the MN.
  • the spectrum efficiency can be indicated by how much radio resource (e.g. bandwidth, or resource blocks, or other resource units) is used on average for transmitting a certain amount of data bits (not including the control channel bits) as discussed above.
  • the spectrum efficiency can be determined based on the granularity indicated by the MN.
  • Step 704 Upon receiving the efficiency information, the MN determines whether and/or how to maintain the dual connection. For example, if the power efficiency, spectrum efficiency, or the ratio of transmission time is not too low, the MN can decide to offload some traffic of the SN back to the MN to reduce the workload of SN. As another example, if the power efficiency, spectrum efficiency, or the ratio of transmission time is too low, the MN can decide to release the SN, or to change to another SN to obtain better performance.
  • This embodiment demonstrates how a DU and a CU can exchange the efficiency information and use it in the intra-CU inter-DU dual-connection scenarios.
  • FIG. 8 shows an example intra-CU inter-DU dual connection architecture.
  • the UE simultaneously connects to a DU1 and a DU2.
  • Both DU1 and DU2 connect to the same CU.
  • the DU1 is referred to as the master DU
  • the DU2 is referred to as the secondary DU.
  • both DUs use same RAT for a given UE.
  • both DUs use NR for the UE.
  • FIG. 9 shows another example messaging procedure for reporting power and/or spectrum efficiency in accordance with one or more embodiments of the present technology.
  • Step 901 The CU configures and sends one or more thresholds of triggering the efficiency info reporting to the Secondary DU.
  • the one or more thresholds can include at least one of the following:
  • the threshold for a power efficiency can be indicated by a ratio of transmitted bit for each power consumption unit.
  • the ratio of transmitted bit per power consumption e.g., watt
  • the ratio of transmitted bit per power consumption indicates how much power is used, on average, to send a certain number of traffic bits, e.g. one data bit, (not including the control channel bits) .
  • the threshold can be defined with one of the following granularities: per connection, per cell group, per cell, per carrier, per PDU session, per Quality of Service (QoS) flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • QoS Quality of Service
  • the ratio is determined based on all cells or all carriers configured in the SN for the given UE.
  • the ratio is determined based on each cell configured in the SN for the given UE.
  • the granularity of per carrier the ratio is determined based on each carrier configured in the SN for the given UE.
  • the threshold of a transmission time ratio can be a ratio between the transmission time and the connection time, or a ratio between the transmission time and the connection active time.
  • the transmission time can be defined as the time during which transmitting or receiving of the traffic data is performed.
  • the active time can be defined as the time that a user device is monitoring the downlink control channel or transmitting the uplink control channel information, during which the traffic data may or may not be transmitted or received.
  • the threshold can be defined with one of the following granularities: per connection, per cell group, per cell, per carrier, per PDU session, per Qos flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • the threshold can be used by the receiving side to determine when to trigger the reporting of transmission time ratio according to the granularity.
  • the threshold of a spectrum efficiency can be indicated based on how much radio resources (e.g. bandwidth, or resource blocks, or other resource units) is used, on average, for transmitting a certain amount of data bits (not including the control channel bits) .
  • the spectrum efficiency can be indicated by bits per Hz.
  • the threshold can be defined with one of the following granularities: per connection, per cell group, per cell, per carrier, per PDU session, per Quality of Service (QoS) flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • QoS Quality of Service
  • the threshold can be used by the receiving side to decide when to trigger the reporting of the spectrum efficiency according to the granularity.
  • the MN also configures the period of sending the efficiency report.
  • Step 902 Based on the information that the secondary DU receives from the CU, the secondary DU determines if the condition of triggering the efficiency reporting has been met. For example, the secondary DU can trigger the reporting when the ratio of transmitted bit per power consumption is below a first threshold, when the ratio of transmission time is below a second threshold, or when the spectrum efficiency is below a third threshold. In some embodiments, transmitting the report can be triggered periodically. For example, the secondary DU can use a timer to track whether it can trigger the reporting when the timer expires according to the period of reporting indicated by the CU.
  • first, second, and third thresholds can be the thresholds that secondary DU receives from the CU.
  • the secondary DU can determine the threshold values by itself.
  • Step 903 The secondary DU sends the efficiency information to the CU.
  • the efficiency information includes at least one of the following:
  • the power efficiency can be indicated by a ratio of transmitted bit for each power consumption unit.
  • the ratio of transmitted bit for each power consumption unit can be determined based on the granularity indicated by the CU.
  • the ratio is determined based on all cells or all carriers configured in the secondary DU for the given UE.
  • the ratio is determined based on each cell configured in the secondary DU for the given UE.
  • the ratio is determined based on each carrier configured in the secondary DU for the given UE separately.
  • a ratio of transmission time can be indicated by a ratio between the transmission time and connection time, or a ratio between the transmission time and connection active time as discussed above.
  • the ratio can be determined based on the granularity indicated by the CU.
  • the spectrum efficiency can be indicated by how much radio resource (e.g. bandwidth) is used on average for transmitting a certain amount of data bits (not including the control channel bits) as discussed above.
  • the spectrum efficiency can be determined based on the granularity indicated by the CU.
  • Step 904 Upon receiving the efficiency information, the CU determines whether and/or how to maintain the dual connection. For example, if the power efficiency, spectrum efficiency, or the ratio of transmission time is not too low, the CU can decide to offload some traffic of the secondary DU. As another example, if the power efficiency, spectrum efficiency, or the ratio of transmission time is too low, the CU can decide to release the secondary DU, or to change to another secondary DU to obtain better performance.
  • Step 905 and 906 In some embodiments, these two steps can be performed anytime during the UE connection time.
  • the master DU or the second DU receives preference information from the UE, the master DU or the second DU relays such information to the CU.
  • the preference information can indicate the UE’s preference of whether to prioritize power saving instead of prioritizing user experience. For example, the information can indicate whether certain traffic needs to be prioritized to ensure greater traffic throughput, or minimize the scheduling delay.
  • the preference information can also be reported according to a granularity, such as per connection, per cell group in the case of dual connection or multiple connection, per PDU session, per Qos flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • This embodiment shows how an access node and a UE can exchange the efficiency information and use it in the dual-connection scenarios.
  • the UE simultaneously connects to two network elements (e.g., as shown in FIG. 2) .
  • the network element A also referred to as the master node (MN)
  • MN master node
  • SN secondary node
  • the MN and SN can use the same Radio Access Technology (RTA) type or different RAT types.
  • RTA Radio Access Technology
  • LTE Long Term Evolution
  • NR NR
  • both can be NR.
  • the core network can be either Evolved Packet Core (EPC) or 5GC network.
  • FIG. 10 shows another example messaging procedure for reporting power and/or spectrum efficiency in accordance with one or more embodiments of the present technology.
  • Step 1001 The MN configures and sends one or more thresholds for triggering the efficiency info reporting to the UE.
  • the one or more thresholds can include at least one of the following:
  • the threshold for a power efficiency can be indicated by a ratio of transmitted bit for each power consumption unit.
  • the ratio of transmitted bit per power consumption e.g., watt
  • the ratio of transmitted bit per power consumption indicates how much power is used, on average, to send a certain number of traffic bits, e.g. one data bit, (not including the control channel bits) .
  • the threshold can be defined with one of the following granularities: per connection, per cell group, per cell, per carrier, per PDU session, per Quality of Service (QoS) flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • QoS Quality of Service
  • the ratio is determined based on all cells or all carriers for the UE.
  • the ratio is determined based on each cell for the UE.
  • the granularity of per carrier the ratio is determined based on each carrier for the UE.
  • the threshold of a transmission time ratio can be a ratio between the transmission time and the connection time, or a ratio between the transmission time and the connection active time.
  • the transmission time can be defined as the time during which transmitting or receiving of the traffic data is performed.
  • the active time can be defined as the time that a user device is monitoring the downlink control channel or transmitting the uplink control channel information, during which the traffic data may or may not be transmitted or received.
  • the threshold can be defined with one of the following granularities: per connection, per cell group, per cell, per carrier, per PDU session, per Qos flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • the threshold can be used by the receiving side to determine when to trigger the reporting of transmission time ratio according to the granularity.
  • the threshold of a spectrum efficiency can be indicated based on how much radio resources (e.g. bandwidth, or resource blocks, or other resource units) is used, on average, for transmitting a certain amount of data bits (not including the control channel bits) .
  • the spectrum efficiency can be indicated by bits per Hz.
  • the threshold can be defined with one of the following granularities: per connection, per cell group, per cell, per carrier, per PDU session, per Quality of Service (QoS) flow, per direction (e.g., uplink and/or downlink) , per bearer, or per logical channel.
  • QoS Quality of Service
  • the threshold can be used by the receiving side to decide when to trigger the reporting of the spectrum efficiency according to the granularity.
  • the MN also configures the period of sending the efficiency report.
  • Step 1002 Based on the configuration that UE receives from the MN, the UE determines if the condition of triggering the efficiency reporting has been met. For example, the UE can trigger the reporting when the ratio of transmitted bit per power consumption is below a first threshold, when the ratio of transmission time is below a second threshold, or when the spectrum efficiency is below a third threshold. In some embodiments, transmitting the report can be triggered periodically. For example, the UE can use a timer to track whether it can trigger the reporting when the timer expires according to the period of reporting indicated by the MN.
  • Step 1003 The UE sends the efficiency information to the MN.
  • the efficiency information includes at least one of the following:
  • the power efficiency can be indicated by a ratio of transmitted bit for each power consumption unit.
  • the ratio of transmitted bit for each power consumption unit can be determined based on the granularity indicated by the MN. For example, using the granularity of per connection, the ratio is determined based on all cells or all carriers for the UE. As another example, using the granularity of per cell, the ratio is determined based on each cell for the UE. As one more example, using the granularity of per carrier, the ratio is determined based on each carrier for the UE.
  • a ratio of transmission time can be indicated by a ratio between the transmission time and connection time, or a ratio between the transmission time and connection active time as discussed above.
  • the ratio can be determined based on the granularity indicated by the MN.
  • the spectrum efficiency can be indicated by how much radio resource (e.g. bandwidth) is used on average for transmitting a certain amount of data bits (not including the control channel bits) as discussed above.
  • the spectrum efficiency can be determined based on the granularity indicated by the MN.
  • Step 1004 Upon receiving the efficiency information, the MN determines whether and/or how to maintain the dual connection. For example, if the power efficiency, spectrum efficiency, or the ratio of transmission time is not too low, the MN can decide to offload some traffic of some of the SN (s) back to the MN. As another example, if the power efficiency, spectrum efficiency, or the ratio of transmission time is too low, the MN can decide to release one or more SNs, or to change to different SN (s) to obtain better performance.
  • This embodiment shows how an access node can enhance resource efficiency in duplicated transmission scenarios.
  • the UE is configured with a dual connection.
  • the PDCP duplicated transmission is configured and activated.
  • the PDCP duplicated transmission indicates that a same PDCP packet is transmitted twice: once using the MN link and once using the SN link.
  • Duplicated transmission can be used to increase reliability when the radio channel condition becomes worse. However, it costs double the amount of radio resources, which is expensive on the spectrum efficiency.
  • FIG. 11 shows an example messaging procedure for configuring a duplicated transmission to increase efficiency in accordance with one or more embodiments of the present technology.
  • Step 1101 The UE receives one or more configuration parameters from the MN for configuring PDCP duplication transmissions.
  • the one or more configuration parameters include at least one of the following:
  • a packet size limitation for duplicated transmission (s) .
  • the limitation can be defined per UE or per bearer. For example, after the UE receives the threshold, if the UE is configured to perform PDCP duplication transmission, the UE only performs duplicated transmission for packet sizes that do not exceed the said limitation. As another example, if the UE is configured to perform PDCP duplication transmission for a particular bearer, the UE the UE only performs duplicated transmission using that bearer for packet sizes that do not exceed the said limitation.
  • a condition upon which duplicated transmissions are to be performed can be a radio quality level upper limit, a radio quality level lower limit, or a radio quality level range.
  • the radio quality level can be defined as Signal to Interference and Noise Ratio (SINR) , Reference Signal Received Power (RSRP) , or Reference Signal Received Quality (RSRQ) .
  • SINR Signal to Interference and Noise Ratio
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality
  • condition can be satisfied when the radio quality level exceeds or is equal to the radio quality level lower limit, or when the radio quality level is below or equal to the radio quality level upper limit. Alternatively, the condition can be satisfied when the radio quality level is within the radio quality level range.
  • a time offset indication or a time offset value for the duplicated transmissions over one or more links or one or more carriers is to indicate whether the UE needs to add a time offset between the different connections of the duplicated transmissions --that is, the duplicated transmissions are not performed simultaneously.
  • the time offset value can be indicated as a manner of a lower limit or a range of limits.
  • the UE can decide by itself a time offset value for the duplicated transmissions.
  • the UE receives a time offset value from the MN, the UE then uses the time offset value for the duplicated transmissions.
  • the time offset value is provided as a lower limit.
  • the UE then uses a time offset that is the same or greater than the given value (i.e., the lower limit) .
  • the time offset value is provided as a range of limits.
  • the UE then uses a time offset value that is within the given range. For example, the time offset indicated by the MN is ⁇ t in the form of a lower limit.
  • the UE performs the first transmission using the MN link at t 1 .
  • the UE then performs the second (duplicated) transmission using the SN link at t 2 ⁇ t 1 + ⁇ t.
  • the UE can ensure that the average time offset between duplicated transmission (e.g., corresponding to one of the granularities as discussed above) meets or exceeds the given time offset lower limit.
  • Step 1102 Upon receiving the configuration parameters from the MN, the UE perform the duplicated transmissions according to these parameters as discussed above.
  • FIG. 12 shows an example of a wireless communication system 1200 where techniques in accordance with one or more embodiments of the present technology can be applied.
  • a wireless communication system 1200 can include one or more base stations (BSs) 1205a, 1205b, one or more wireless devices 1210a, 1210b, 1210c, 1210d, and a core network 525.
  • a base station 1205a, 1205b can provide wireless service to wireless devices 1210a, 1210b, 1210c and 1210d in one or more wireless sectors.
  • a base station 1205a, 1205b includes directional antennas to produce two or more directional beams to provide wireless coverage in different sectors.
  • the core network 525 can communicate with one or more base stations 1205a, 1205b.
  • the core network 525 provides connectivity with other wireless communication systems and wired communication systems.
  • the core network may include one or more service subscription databases to store information related to the subscribed wireless devices 1210a, 1210b, 1210c, and 1210d.
  • a first base station 1205a can provide wireless service based on a first radio access technology
  • a second base station 1205b can provide wireless service based on a second radio access technology.
  • the base stations 1205a and 1205b may be co-located or may be separately installed in the field according to the deployment scenario.
  • the wireless devices 1210a, 1210b, 1210c, and 1210d can support multiple different radio access technologies.
  • FIG. 13 is a block diagram representation of a portion of a radio station.
  • a radio station 1305 such as a base station or a wireless device (or UE) can include processor electronics 1310 such as a microprocessor that implements one or more of the wireless techniques presented in this document.
  • the radio station 1305 can include transceiver electronics 1315 to send and/or receive wireless signals over one or more communication interfaces such as antenna 1320.
  • the radio station 1305 can include other communication interfaces for transmitting and receiving data.
  • Radio station 1305 can include one or more memories (not explicitly shown) configured to store information such as data and/or instructions.
  • the processor electronics 1310 can include at least a portion of the transceiver electronics 1315. In some embodiments, at least some of the disclosed techniques, modules or functions are implemented using the radio station 1305.
  • the present document discloses techniques that can be embodied into wireless communication systems to increase power and/or spectrum efficiency in various scenarios.
  • the techniques described herein can be applied to multi-/dual-connection scenarios to enhance power/spectrum efficiency.
  • the techniques can also be applied to single-connection scenarios for duplicated transmission using multiple carriers to increase spectrum efficiency.
  • a method for wireless communication includes receiving, by a communication node, a report from a communication apparatus.
  • the report indicates a power efficiency or a spectrum efficiency of the communication apparatus.
  • the method also includes determining, by the communication node, resource scheduling according to the report.
  • the communication node includes a master communication node and the communication apparatus includes a secondary communication node.
  • the master communication node and the secondary communication node connect to a user device simultaneously.
  • the communication node includes a Central Unit and the communication apparatus includes a Distributed Unit.
  • the communication node includes an access node and the communication apparatus includes a user device.
  • the report includes at least one of a first value indicating the power efficiency, a second value indicating a transmission time ratio, a third value indicating the spectrum efficiency, or preference information about a preference between power saving and user experience.
  • the power efficiency, the transmission time ratio, the spectrum efficiency, or the preference between power saving and user experience is determined and reported for each connection, each direction of the connection, each cell group, each cell, each carrier, each Protocol Data Unit (PDU) session, each Quality of Service (QoS) flow, each bearer, or each logical channel.
  • PDU Protocol Data Unit
  • QoS Quality of Service
  • the power efficiency is determined based on an average power consumption of transmitting or receiving an amount of data bits not including control channel bits.
  • the transmission time ratio is determined based on a ratio between a transmission time and a connection time, or a ratio between the transmission time and a connection active time.
  • the spectrum efficiency is determined based on an average amount of radio resources used for transmitting or receiving an amount of data bits.
  • the method includes transmitting, from a communication node, a message to a wireless communication device.
  • the message indicates a condition under which the communication apparatus transmits the report of power efficiency or spectrum efficiency to the communication node.
  • the condition can include at least one of: a threshold for a power efficiency, a threshold for a transmission time ratio, or a threshold for a spectrum efficiency.
  • the message indicates a transmission period of the report.
  • a wireless communication method in another example aspect, includes detecting, by a communication apparatus, a power efficiency or a spectrum efficiency of the communication apparatus. The method also includes transmitting, by the communication apparatus, a report to a communication node indicating the power efficiency or the spectrum efficiency of the communication apparatus.
  • the communication node includes a master communication node and the communication apparatus includes a secondary communication node.
  • the master communication node and the secondary communication node connect to a user device simultaneously.
  • the communication node includes a Central Unit and the communication apparatus includes a Distributed Unit.
  • the communication node includes an access node and the communication apparatus includes a user device.
  • the report includes at least one of a first value indicating the power efficiency, a second value indicating a transmission time ratio, a third value indicating the spectrum efficiency, or preference information about a preference between power saving and user experience.
  • the power efficiency, the transmission time ratio, the spectrum efficiency, or the preference between power saving and user experience is determined and reported for each connection, each direction of the connection, each cell group, each cell, each carrier, each Protocol Data Unit (PDU) session, each Quality of Service (QoS) flow, each bearer, or each logical channel.
  • PDU Protocol Data Unit
  • QoS Quality of Service
  • the power efficiency is determined based on an average power consumption of transmitting or receiving an amount of data bits.
  • the transmission time ratio is determined based on a ratio between a transmission time and a connection time, or a ratio between the transmission time and a connection active time.
  • the spectrum efficiency is determined based on an average amount of radio resources used for transmitting or receiving an amount of data bits.
  • the method includes transmitting, from a communication node, a message to a wireless communication device.
  • the message indicates a condition under which the communication apparatus transmits the report of power efficiency or spectrum efficiency to the communication node.
  • the condition can include at least one of: a threshold for a power efficiency, a threshold for a transmission time ratio, or a threshold for a spectrum efficiency.
  • the message indicates a transmission period of the report.
  • a method for wireless communication includes receiving, by a user device, one or more parameters from a communication node for configuring duplicated transmissions to be performed by the user device.
  • the method also includes performing, by the user device, duplicated transmissions according to the one or more parameters.
  • the one or more parameters includes at least one of: a packet size limitation for duplicated transmissions, an indicator to enable or disable the packet size limitation, a radio condition upon which duplicated transmissions are to be performed, a time offset indication for the duplicated transmissions over one or more links or one or more carriers, or a time offset value for the duplicated transmissions over one or more links or one or more carriers.
  • the packet size limitation is defined for each user device or each bearer of the user device.
  • the radio condition upon which duplicated transmissions are to be performed includes a radio quality level.
  • the radio quality level is indicated by Signal to Interference and Noise Ratio (SINR) , Reference Signal Received Power (RSRP) , or Reference Signal Received Quality (RSRQ) .
  • a method for wireless communication includes transmitting, from a communication node, one or more parameters to a user device for configuring duplicated transmissions to be performed by the user device.
  • the one or more parameters includes at least one of: a packet size limitation for duplicated transmissions, an indicator to enable or disable the packet size limitation, a radio condition upon which duplicated transmissions can be performed, a time offset indication for the duplicated transmissions over one or more links or one or more carriers, or a time offset value for the duplicated transmissions over one or more links or one or more carriers.
  • the packet size limitation is defined for each user device or each bearer of the user device.
  • the radio condition upon which duplicated transmissions are to be performed includes a radio quality level.
  • the radio quality level is indicated by Signal to Interference and Noise Ratio (SINR) , Reference Signal Received Power (RSRP) , or Reference Signal Received Quality (RSRQ) .
  • a communication apparatus includes a processor configured to implement the method described above.
  • a computer program product having code stored thereon is disclosed.
  • the code when executed by a processor, causes the processor to implement the methods described above.
  • the disclosed and other embodiments, modules and the functional operations described in this document can be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed in this document and their structural equivalents, or in combinations of one or more of them.
  • the disclosed and other embodiments can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer readable medium for execution by, or to control the operation of, data processing apparatus.
  • the computer readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter effecting a machine-readable propagated signal, or a combination of one or more them.
  • data processing apparatus encompasses all apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers.
  • the apparatus can include, in addition to hardware, code that creates an execution environment for the computer program in question, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them.
  • a propagated signal is an artificially generated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiver apparatus.
  • a computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment.
  • a computer program does not necessarily correspond to a file in a file system.
  • a program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document) , in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub programs, or portions of code) .
  • a computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across multiple sites and interconnected by a communication network.
  • the processes and logic flows described in this document can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output.
  • the processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit) .
  • processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer.
  • a processor will receive instructions and data from a read only memory or a random-access memory or both.
  • the essential elements of a computer are a processor for performing instructions and one or more memory devices for storing instructions and data.
  • a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto optical disks, or optical disks.
  • mass storage devices for storing data, e.g., magnetic, magneto optical disks, or optical disks.
  • a computer need not have such devices.
  • Computer readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including by way of example semiconductor memory devices, e.g., EPROM, EEPROM, and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto optical disks; and CD ROM and DVD-ROM disks.
  • semiconductor memory devices e.g., EPROM, EEPROM, and flash memory devices
  • magnetic disks e.g., internal hard disks or removable disks
  • magneto optical disks e.g., CD ROM and DVD-ROM disks.
  • the processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.

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

Abstract

L'invention concerne des procédés, un appareil et des systèmes pour augmenter la puissance, le spectre, ou l'efficacité de transmission dans des scénarios à double connexion ou multi-connexion. L'invention concerne également des techniques permettant d'améliorer l'efficacité spectrale lorsque des transmissions dupliquées sont utilisées dans des scénarios à connexion simple, à double connexion ou à connexions multiples. Dans un aspect donné à titre d'exemple, un procédé de communication sans fil consiste à recevoir, par un nœud de communication, un rapport provenant d'un appareil de communication. Le rapport indique une efficacité de puissance ou une efficacité de spectre de l'appareil de communication. Le procédé consiste également à déterminer, par le nœud de communication, une planification de ressources en fonction du rapport.
PCT/CN2018/115570 2018-11-15 2018-11-15 Augmentation de l'efficacité dans les communications sans fil WO2020034470A1 (fr)

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WO2017054836A1 (fr) * 2015-09-28 2017-04-06 Nokia Solutions And Networks Oy Contrôle de multi-connectivité
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WO2018204828A1 (fr) * 2017-05-05 2018-11-08 Qualcomm Incorporated Duplication de paquets au niveau d'une entité de protocole de convergence de données par paquets (pdcp)

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