WO2020133254A1 - Procédé de gestion de synchronisation de système et dispositif de communication - Google Patents

Procédé de gestion de synchronisation de système et dispositif de communication Download PDF

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Publication number
WO2020133254A1
WO2020133254A1 PCT/CN2018/125000 CN2018125000W WO2020133254A1 WO 2020133254 A1 WO2020133254 A1 WO 2020133254A1 CN 2018125000 W CN2018125000 W CN 2018125000W WO 2020133254 A1 WO2020133254 A1 WO 2020133254A1
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Prior art keywords
communication unit
system timing
standard
communication
node
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PCT/CN2018/125000
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English (en)
Chinese (zh)
Inventor
唐富华
林雁
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华为技术有限公司
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Priority to CN201880096399.4A priority Critical patent/CN112534953B/zh
Priority to PCT/CN2018/125000 priority patent/WO2020133254A1/fr
Publication of WO2020133254A1 publication Critical patent/WO2020133254A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • 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

  • This application relates to the field of communications, and in particular to a system timing management method and a communication device.
  • the same terminal device can communicate with the master node (MN) of the first standard through the first connection, and communicate with the second standard through the second connection at the same time.
  • Secondary node (SN) communication For example, the same mobile phone can communicate with the evolved Node (B, eNB) of a long term evolution (LTE) system through its first modem, and simultaneously communicate with the new air interface (new radio) through its second modem , NR) system g node (g Node B, gNB) communication.
  • B, eNB evolved Node
  • LTE long term evolution
  • new radio new radio
  • the terminal device can independently control the modem that has no data transmission requirement to enter the sleep state, such as disconnecting the power supply of the radio frequency circuit of the modem and the baseband processor to reduce power consumption of the terminal device. It is easy to understand that when the modem is in the sleep state, the modem no longer maintains the system timing between its corresponding nodes.
  • the terminal device may need to use the system timing between the modem in the sleep state and its corresponding node in order to coordinate the behavior of the modem in the awake state.
  • the second modem does not know when the first modem wakes up, so the second modem cannot utilize the wireless resources allocated to the first standard to perform data transmission of the second standard, which is the above
  • the wireless resources configured by the two standards are idle because they cannot be shared, resulting in a reduction in the utilization rate of the wireless resources.
  • the terminal device needs to report the system timing deviation (SFN and Frame Timing Difference, SFTD) between the system timing of the first mode and the system timing of the second mode, so as to serve as a reference when scheduling radio resources.
  • SFN and Frame Timing Difference SFTD
  • SFTD System Timing Difference
  • the present application provides a system timing management method and a communication device, which can continuously maintain the system timing of the first standard corresponding to the communication unit when a communication unit of the terminal device is in a sleep state, thereby implementing the second standard for another communication unit Provides reference for business scheduling and resource configuration in order to achieve shared resources, improve work efficiency and reduce power consumption.
  • a communication device in a first aspect, includes: a common storage area without power failure, a first communication unit and a second communication unit.
  • the first communication unit is used to establish a communication connection of the first standard
  • the second communication unit is used to establish a communication connection of the second standard.
  • the first communication unit is used to acquire the system timing of the first standard when the first communication unit is in the awake state, and store the system timing of the first standard in the common storage area without powering down.
  • the second communication unit is used to calculate the system timing compensation value of the first standard according to the system timing of the first standard stored in the common storage area without powering down when the second communication unit is in the awake state and the first communication unit is in the sleep state .
  • the second communication unit is also used for calculating the system communication of the first system and the system timing compensation value of the first system according to the system timing compensation value stored in the common storage area without power-off, when the second communication unit is in the awake state and the first communication unit is in sleep At the time, the system of the first system converts the value regularly.
  • the second communication unit can calculate the first time when the first communication unit is in the sleep state according to the system timing of the first standard acquired and stored in the common storage area without power-off when the first communication unit is in the wake-up state The system timing compensation value of the system, and then calculating the system timing conversion value of the first system when the first communication unit is in a sleep state. That is to say, even if the first communication unit is in the sleep state, the purpose of maintaining the system timing of the first mode can be continuously maintained, so as to provide a reference for the second communication unit to implement the service scheduling and resource configuration process of the second mode, which can improve Shared resource utilization and work efficiency, and reduce power consumption.
  • the second communication unit can use the wireless resources allocated to the first standard to complete the communication of the second standard, improve the utilization rate of the wireless resources, thereby improving the communication efficiency, and can reduce the probability of resource conflict .
  • the first communication unit is also used to acquire the system timing of the first mode and time the system of the first mode when the first communication unit is in the awake state and the second communication unit is in the sleep state Store in the public storage area without power down.
  • the second communication unit is also used to acquire the system timing of the second mode when the second communication unit is in the awake state and the first communication unit is in the sleep state.
  • the second communication unit is also used to calculate the system timing deviation between the first system and the second system based on the system timing conversion value of the first system and the system timing of the second system.
  • the second communication unit can calculate the first according to the system timing of the first system that is acquired and stored in the common storage area without power down when the first communication unit is in the awake state and the second communication unit is in the sleep state
  • the system timing compensation value of the first mode when the communication unit is in the sleep state and then calculates the system timing conversion value of the first mode when the second communication unit is in the awake state and the first communication unit is in the sleep state, and according to the system timing of the first mode
  • the conversion value and the system timing of the second system, to calculate the system timing deviation between the first system and the second system can avoid measuring the system timing deviation between the first system and the second system
  • the situation of the communication unit that should maintain the deep sleep state can reduce the power consumption of the communication device during the measurement of the system timing deviation between the first mode and the second mode.
  • the first communication unit is also used to receive system timing measurement tasks.
  • the system timing measurement task is used to measure the system timing deviation of the first system and the second system.
  • the second communication unit is also used to receive system timing measurement tasks.
  • the system timing measurement task is used to measure the system timing deviation of the first system and the second system.
  • the first communication unit is also used to send the system timing deviation when it is in the awake state again.
  • the second communication unit is also used to send the system timing deviation of the first mode and the second mode when it is in the awake state this time.
  • the first node delivers and reports to the first node; the second node delivers and reports to The second node reports; the first node sends the report to the second node; the second node sends the report to the first node.
  • the communication device in the first aspect may be a terminal device, or a chip provided in the terminal device, such as a baseband processing chip, or a system chip including a radio frequency circuit, which is not limited in this application.
  • a system timing management method is provided. This method is applied to terminal equipment.
  • the terminal device includes: a common storage area without power failure, a first communication unit and a second communication unit.
  • the first communication unit is used to establish a communication connection of the first standard
  • the second communication unit is used to establish a communication connection of the second standard.
  • the system timing management method includes: when the first communication unit is in the awake state, acquiring the system timing of the first standard, and storing the system timing of the first standard in the common storage area without power failure.
  • the system timing compensation value of the first mode is calculated according to the system timing of the first mode stored in the common storage area without powering down.
  • the system of the first system is calculated when the second communication unit is in the awake state and the first communication unit is in the sleep state Time conversion value.
  • the above system timing management method may further include: when the first communication unit is in the awake state and the second communication unit is in the sleep state, acquiring the system timing of the first standard, and setting the first standard The system is regularly stored in the public storage area without power down.
  • the system timing of the second mode is acquired. Based on the conversion value of the system timing of the first mode and the system timing of the second mode, the system timing deviation between the first mode and the second mode is calculated.
  • the foregoing system timing management method may further include: receiving a system timing measurement task.
  • the system timing measurement task is used to measure the system timing deviation of the first system and the second system.
  • the above system timing management method may further include: receiving a system timing measurement task.
  • the system timing measurement task is used to measure the system timing deviation of the first system and the second system.
  • the above system timing management method may further include: when the first communication unit is in the awake state again, sending the system timing deviation.
  • the above system timing management method may further include: when the second communication unit is in the awake state this time, sending the system timing deviation of the first system and the second system.
  • a communication device in a third aspect, includes a processor and a transceiver, and the processor is coupled with the transceiver and the memory.
  • Memory is used to store computer programs.
  • the processor is configured to execute the computer program stored in the memory, so that the communication device executes the system timing management method described in the second aspect or any possible implementation manner of the second aspect.
  • the communication device includes one or more processors and multiple transceivers.
  • the transceiver is used to support the communication device to communicate with other devices to realize the receiving and/or transmitting functions of the first communication unit and the second communication unit. For example, receiving the system timing measurement task sent by the first node, and sending the system timing deviation to the first node or the second node.
  • the one or more processors are configured to support the communication device according to the third aspect to perform the corresponding function of the terminal device in the above system timing management method.
  • the second communication unit is controlled to calculate the system timing compensation value and the system timing conversion value of the first system when the first communication unit is in the sleep state.
  • the communication device may further include one or more memories, the memory is coupled to the processor, and is used to store necessary program instructions and/or data of the communication device.
  • the coupling of the memory and the processor means that there is a signal connection between the memory and the processor.
  • the one or more memories may be integrated with the processor, or may be set separately from the processor, which is not limited in this application.
  • the communication device may be a smart phone or a wearable device
  • the transceiver may be a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the communication device may also be a communication chip, such as a baseband processing chip, or a system chip containing a radio frequency circuit.
  • the transceiver may be an input/output circuit or an interface of the communication chip.
  • the communication device includes a transceiver, a processor, and a memory.
  • the processor is used to control the transceiver to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to run the computer program in the memory, so that the communication device performs any possible implementation as in the second aspect or the second aspect The system timing management method described in this manner.
  • a communication system includes: a communication device according to the first or third aspect, and a plurality of nodes, such as the first node and the second node described above.
  • a readable storage medium that stores programs or instructions, and when the programs or instructions run on a computer, the computer is executed as described in the second aspect or any possible implementation manner of the second aspect System timing management method.
  • a computer program product including computer program code, which, when the computer program code runs on a computer, causes the computer to perform system timing as described in the second aspect or any possible implementation manner of the second aspect Management methods.
  • FIG. 1 is a schematic structural diagram of a communication system to which the system timing management method provided by this application is applicable;
  • FIG. 2 is a schematic flowchart of a system timing management method
  • FIG. 3 is a schematic diagram of a scenario of a system timing management method
  • FIG. 4 is a schematic flowchart of a method for measuring a system timing deviation
  • FIG. 5 is a schematic diagram of a scenario of a system timing deviation measurement method
  • FIG. 6 is a schematic flowchart of the system timing management method provided by the application.
  • FIG. 7 is a schematic diagram of a scenario of a system timing management method provided by this application.
  • FIG. 8 is a schematic flowchart of a system timing deviation measurement method provided by this application.
  • FIG. 9 is a schematic diagram of a scenario of a system timing deviation measurement method provided by this application.
  • FIG. 10 is a schematic structural diagram 1 of a communication device provided by an embodiment of the present application.
  • FIG. 11 is a second structural diagram of a communication device provided by an embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various wireless communication systems that can support dual connectivity.
  • the dual connection includes a first connection and a second connection, which are respectively used for communication of a first standard between a terminal device and a first node, and communication of a second standard between a communication device and a second node.
  • the first standard and the second standard may be wireless communication of different standards, or wireless communication of the same standard, which is not limited in the embodiments of the present application.
  • the first standard may be LTE
  • the second standard may be NR
  • the first communication unit and the first node support LTE
  • the second communication unit and the second node support NR
  • the first standard may also be NR
  • the second standard may also be LTE
  • the first communication unit and the first node support NR
  • the second communication unit and the second node support LTE.
  • the wireless communication system composed of the first node and the second node is a heterogeneous wireless communication system.
  • the first standard and the second standard may both be LTE, or both may be NR.
  • the first communication unit and the first node, and the second communication unit and the second node only support one of LTE or NR.
  • the wireless communication system composed of the first node and the second node is a single-standard wireless communication system.
  • Wi-Fi wireless fidelity
  • NB-IoT narrow-band Internet of Things
  • MTC Machine Type Communication
  • 6G The communication standard, such as 6G, is not limited in the embodiments of the present application.
  • the first node and the second node are two different base stations. It is easy to understand that the first node and the second node may also be different cells of the same base station (co-site deployment), such as different sectors of the same base station, which is not limited in this embodiment of the present application.
  • first node and the second node may be connected by wired means, such as optical fiber or network cable, or may be connected by wireless means, which is not limited in the embodiments of the present application.
  • the network architecture and business scenarios described in the embodiments of the present application are to more clearly explain the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. With the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.
  • the wireless communication system shown in FIG. 1 is first taken as an example to describe in detail the wireless communication system applicable to the embodiments of the present application.
  • the wireless communication system includes a terminal device, a first node, and a second node, such as eNB and gNB.
  • the above terminal device may be connected to the first node and/or the second node through a wireless air interface, so as to receive network services.
  • the above-mentioned first node and second node are mainly used to implement wireless physical layer functions, resource scheduling and wireless resource management, wireless access control, and mobility management functions.
  • the first node and the second node may be an access network device with wireless transceiver function or a chip provided in the access network device.
  • the access network equipment includes but is not limited to: access points (access points (AP) in the Wi-Fi system, such as home wireless routers, wireless relay nodes, wireless backhaul nodes, transmission points (transmission and reception points, TRP) Or transmission point (TP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (BSC) 1.
  • Base transceiver station BTS
  • home base station for example, home evolved NodeB, or home Node B, HNB
  • baseband unit BBU
  • 5G such as NR, gNB in the system , Or, transmission point (TRP or TP), one or a group of base stations in a 5G system (including multiple antenna panels), or it can also be a node that constitutes a gNB or transmission point, such as a baseband unit (BBU) , Or, distributed unit (DU), etc.
  • BBU baseband unit
  • DU distributed unit
  • the first node and the second node may include a centralized unit (CU) and a DU.
  • the first node and the second node may further include a radio unit (RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB, for example, CU implements radio resource control (RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer functions
  • DU implements wireless chain Road control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layer functions.
  • RRC radio resource control
  • PDCP packet data convergence layer protocol
  • DU implements wireless chain Road control (radio link control, RLC)
  • media access control media access control
  • MAC physical (physical, PHY) layer functions.
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network devices in the access network RAN, and can also be divided into network devices in the core network CN, which is not limited herein.
  • the above-mentioned terminal device may be a user device with a wireless transceiver function or a chip provided in the user device.
  • the above terminal equipment may also be referred to as a station (STA), user equipment (UE), access terminal, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal , Wireless communication equipment, user agents or user devices.
  • the above terminal devices include but are not limited to: mobile phones, tablet computers, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grids, transportation safety
  • FIG. 1 is only a simplified schematic diagram for ease of understanding and examples.
  • the communication system may also include other nodes or other terminal devices, which are not shown in FIG. 1.
  • the following uses the first communication unit and the first node of the terminal device shown in FIG. 1 and the first standard as LTE as an example to introduce the existing system timing management method in detail.
  • FIG. 2 is a schematic flowchart of an existing system timing management method. As shown in FIG. 2, the method may include S201-S205:
  • the terminal device is powered on, and the public slow counter in its always-on area is started.
  • the terminal device may maintain a public slow counter with a frequency of 32.768 kilohertz (KHz) in its non-power-off zone.
  • KHz kilohertz
  • the length of time corresponding to the maximum count value of the common slow counter is greater than the length of one system frame period of the first standard.
  • one system frame period includes 1024 radio frames (frames), one radio frame is 10 milliseconds (milisecond, ms), and one system frame period is 10240 ms.
  • the terminal device wakes up the first communication unit, and establishes a communication connection (first connection) with the first mode of the first node.
  • the first communication unit may be a modem used in the terminal device to support the first standard.
  • the modem may include only the baseband processor, or it may include both the baseband processor and the radio frequency circuit.
  • the terminal device controls the first communication unit to acquire the system timing of the first standard and the count value of the common slow counter, and to count the timing between the system timing of the first standard and the common slow counter Mapping relations.
  • the above-mentioned timing mapping relationship may be the number of basic time units of the first standard included in one clock cycle of the common slow counter, or may be the number of sampling clock cycles of the first communication unit.
  • the clock period of the sampling clock needs to be less than or equal to 1 Ts.
  • the clock frequency of the sampling clock may be 30.72 megahertz (magaherts, MHz) or 61.44 MHz or 122.88 MHz, usually an integer multiple of 30.72 MHz.
  • the terminal device may calculate the count value of the public slow counter when the first communication unit wakes up again according to the timing mapping relationship.
  • the count value of the common slow counter at this time of wake-up is 1000
  • the sampling clock of the first communication unit is a clock signal of 61.44MHz
  • the terminal device controls the first communication unit to enter a sleep state, and controls the common slow counter to continue counting.
  • the terminal device wakes up the first communication unit again.
  • the above terminal device may also be configured with a second communication unit.
  • the second communication unit is used to establish a second-standard communication connection (second connection) between the terminal device and the second node, and the second communication unit may also use the same wake-sleep mechanism as the first communication unit in order to achieve Power saving purpose.
  • the terminal device needs to report the system timing deviation between the above two standards to the network side, as reported Give the main node (main node, MN) of the above two nodes, and the main node informs the secondary node (secondary node, SN), so that the main node and the secondary node coordinate with each other in the process of communicating with the same terminal device to avoid conflicts .
  • the wake-up period of the terminal device in the first mode may be different from the wake-up period in the second mode, for example, one is 80 ms and the other is 640 ms.
  • the system timings of the above two systems may not be synchronized. Even if the wake-up periods of the above two systems are the same, there may be a case where the above two communication units cannot wake up at the same time.
  • the terminal device needs to wake up the first communication unit and the second communication unit at the same time, lock the first system timing and the second system timing, and then calculate and report the system timing deviation . If the terminal device is controlling a communication unit to execute the timing deviation measurement task, and the wake-up cycle according to another standard, the other communication unit should be in a sleep state, but in order to complete the system timing deviation measurement task, the terminal device must additionally wake up another A communication unit, which leads to increased power consumption of the terminal device.
  • FIG. 4 is a schematic flowchart of a method for measuring a system timing deviation.
  • FIG. 5 is a schematic diagram of the system timing deviation measurement method shown in FIG. 4.
  • the system timing deviation measurement method includes S401-S404:
  • the terminal device receives the system timing deviation measurement task delivered by the first node.
  • the system timing deviation measurement task is used to measure the timing deviation between the system timing of the first mode and the system timing of the second mode observed on the terminal device side.
  • the first communication unit is in the awake state and the second communication unit is in the sleep state, and the terminal device receives the system timing deviation measurement task delivered by the first node through the first communication unit .
  • the terminal device wakes up the second communication unit.
  • the terminal device wakes up the second communication unit.
  • the terminal device locks the system timing of the first mode and the system timing of the second mode, and calculates the system timing deviation between the first mode and the second mode .
  • the terminal device controls the first communication unit and the second communication unit to lock the system timing of the first system and the system timing of the second system.
  • the terminal device reports the system timing deviation between the first standard and the second standard to the first node.
  • the terminal device reports the above system timing deviation to the first node.
  • FIG. 6 is a schematic flowchart of a system timing management method provided by an embodiment of the present application, and can be applied to the terminal device shown in FIG. 1.
  • the terminal device includes a common storage area that does not power down, a first communication unit, and a second communication unit.
  • the first communication unit is used to establish a communication connection of the first standard
  • the second communication unit is used to establish a communication connection of the second standard.
  • the method may include S601-S603:
  • the terminal device acquires the system timing of the first standard, and stores the system timing of the first standard into the non-power-off public storage area.
  • the system timing of the first standard mentioned above refers to the system timing of the first standard observed by the first communication unit of the terminal device, rather than the system timing at the first node on the network side.
  • the first communication unit needs to complete the uplink and downlink synchronization of the first standard between the terminal device and the first node according to the system timing, and then complete the communication of the first standard between the terminal device and the first node.
  • the foregoing acquiring the system timing of the first standard may be that the terminal device controls the first communication unit to latch the system timing of the first standard.
  • the terminal device may store the captured system of the first standard in the non-power-off area of the terminal device at regular intervals.
  • the terminal device may also record the timing mapping relationship between the local timing maintained by the first communication unit and the system timing of the first standard when the first communication unit wakes up.
  • the timing mapping relationship may be the number of basic time units of the first standard included in one clock cycle of the above local timing, or may be the clock of the sampling clock used by the first communication unit included in one clock cycle of the above local timing The number of cycles.
  • the above local timing may be the above local counter located in a non-power-off zone with a clock frequency of 32.768 KHz
  • the above basic time unit may be Ts in LTE and NR
  • the sampling clock may be located in the first communication unit
  • the clock period A clock equal to Ts, such as a clock with a sampling frequency of 30.72MHz, or a clock whose clock period is an integral power of 2 of Ts, such as a clock with a sampling frequency of 61.44MHz or 122.88MHz.
  • timing mapping relationship can be one of the following: a 32.768KHz clock cycle can contain 937.5 30.72MHz clock cycles (Ts), or 1875 61.44MHz clock cycles, or 3750 122.88MHz clocks cycle.
  • the first communication unit is woken up, and the terminal device may control the first communication unit to capture the count value C 1 of the above-mentioned common slow counter at t1 and t2 And C 2 , and the number N1 of Ts included in the period t1-t2 is counted, and the above timing mapping relationship C n1 is calculated according to the following formula:
  • C is the counting cycle of the slow local counter.
  • the count value of the public slow counter, the system timing of the first mode, and the timing mapping relationship may be stored in the non-power-off area of the terminal device when the first communication unit enters the sleep state from the wake-up state.
  • the terminal device controls the second communication unit to calculate the system of the first standard according to the system timing of the first standard stored in the common storage area without power-off Timing compensation value.
  • the terminal device wakes up the second communication unit at time t3, latches the count value c3 of the common slow counter at time t3, and controls the second communication unit to read the common slow
  • the count value of the speed counter, the system timing of the first system and the timing mapping relationship are calculated according to the following formula: the compensation value of the system timing of the first system at time t3, and then the converted value of the system timing of the first system at time t3:
  • T t3 T t1 +(C 3 -C 1 )*C n1 , where C 3 >C 1 ; or,
  • T t3 T t1 +(C 3 +CC 1 )*C n1 , where C 3 ⁇ C 1 ;
  • T t3 is the converted value of the system timing value of the first system at time t3
  • T t1 is the system timing value of the first system latched at time t1
  • C is the counting period of the above-mentioned common slow counter
  • (C 3- C 1 )*C n1 or (C 3 +CC 1 )*C n1 is the compensation value of the system timing of the first system during t1-t3.
  • system timing of the first system may be system timing at multiple time granularities.
  • system timing includes system timing at three time granularities: system frame period, radio frame, and subframe.
  • the compensation value and the conversion value of the system timing also include the compensation value and the conversion value at the above three time granularities.
  • the system timing value of the first standard includes a system frame number (SFN), a subframe number within a radio frame, and an intra-subframe offset of the first standard at a certain moment.
  • SFN system frame number
  • S602 and S603 can be specifically implemented as:
  • the terminal device controls the second communication unit to calculate the converted value of the system frame number, the converted value of the subframe number, and the converted value of the offset within the subframe according to the following first formula set or second formula set;
  • the first formula set includes the following formulas:
  • F n1,3 ⁇ F n1,1 +[T n1,1 +S n1,1 *T n1,sfrm +(C 3 -C 1 )*C n1 ]/T n1,frm ⁇ %F n1,sfn ;
  • S n1,3 ⁇ [T n1,1 +S n1,1 *T n1,sfrm +(C 3 -C 1 )*C n1 ]/T n1,sfrm ⁇ %S n1,frm ;
  • T n1,3 [T n1,1 +S n1,1 *T n1,sfrm +(C 3 -C 1 )*C n1 ]% T n1,sfrm ; where C 3 >C 1 ;
  • the second formula set includes the following formulas:
  • F n1,3 ⁇ F n1,1 +[T n1,1 +S n1,1 *T n1,sfrm +(C 3 +C max -C 1 )*C n1 ]/T n1,frm ⁇ %F n1 ,sfn ;
  • S n1,3 ⁇ [T n1,1 +S n1,1 *T n1,sfrm +(C 3 +C max -C 1 )*C n1 ]/T n1,sfrm ⁇ %S n1,frm ;
  • T n1,3 [T n1,1 +S n1,1 *T n1,sfrm +(C 3 +C max -C 1 )*C n1 ]% T n1,sfrm ; where C 3 ⁇ C 1 , and C max is the number of clock cycles included in one round of counting of the common slow counter.
  • F n1,3 , S n1,3 and T n1,3 are the system frame number conversion value, subframe number conversion value, and subframe offset conversion value of the first standard at time t3,
  • F n1,1 , S n1,1 and T n1,1 are in turn the system frame number, subframe number, and intra-subframe offset of the first system at time t1.
  • T n1,sfrm is the number of basic time units included in a subframe of the first standard
  • T n1,frm is the number of basic time units included in a radio frame of the first standard
  • S n1,frm is a radio frame of the first standard
  • T n1,frm T n1,sfrm *S n1,frm
  • F n1,sfn are the number of wireless frames included in one system frame period of the first standard.
  • the basic time unit is Ts
  • the values of the above T n1,sfrm , T n1,frm , S n1,frm , F n1,sfn are: 30720 Ts, 307200 Ts, 10 subframes, 1024 Radio frames.
  • C 1 and C 3 are the count values of the common slow counter at time t1 and time t3 in sequence, and C n1 is the number of basic time units of the first standard included in one clock cycle of the common slow counter.
  • the second communication unit can calculate the time when the first communication unit is in the sleep state according to the system timing of the first system that is acquired and stored in the common storage area where the first communication unit is in the wake-up state The system timing compensation value of the first mode, and then calculating the system timing conversion value of the first mode when the first communication unit is in a sleep state. That is to say, even if the first communication unit is in the sleep state, the purpose of maintaining the system timing of the first mode can be continuously maintained, so as to provide a reference for the second communication unit to implement the service scheduling and resource configuration process of the second mode, which can improve Shared resource utilization and work efficiency, and reduce power consumption.
  • the second communication unit can use the radio resources allocated to the first standard to complete the communication of the second standard, improve the utilization rate of the wireless resources, thereby improving the communication efficiency, and can reduce the probability of resource conflict .
  • the second communication unit may also use the above-mentioned system timing management method of the first mode, which is used to solve the problem of measuring the system timing deviation of the two modes as shown in FIG. 4 and FIG. 5 and must additionally wake up Another communication unit that is supposed to be in the sleep state, which leads to the problem of higher power consumption of the terminal device.
  • the following is a detailed description with reference to FIGS. 8 and 9.
  • FIG. 8 is another system timing management method provided by an embodiment of the present application, which is used to measure a system timing deviation between two systems.
  • 9 is a schematic diagram of an application scenario of the system timing management method shown in FIG. 8.
  • the system timing management method includes S801-S805:
  • the terminal device acquires the system timing of the first standard and stores the system timing of the first standard in the common storage area without power failure.
  • the system timing of the first standard is captured, and the common slow counter A count value and the timing mapping relationship between the system timing of the first system and the common slow counter in the period t1-t2 are counted and stored in the non-power-off area of the terminal device.
  • the terminal device controls its second communication unit to calculate the system timing compensation value of the first standard.
  • S803 Calculate the system timing conversion value of the first mode when the second communication unit is in the awake state and the first communication unit is in the sleep state according to the system timing of the first mode and the system timing compensation value of the first mode .
  • the system timing of the first system is obtained, and the first count of the common slow counter is obtained Value, and the timing mapping relationship between the system timing of the first standard and the common slow counter, calculate the timing compensation value of the system timing of the first standard during t1-t3, and then calculate the first system timing conversion value at time t3.
  • the specific calculation method please refer to the method and text description shown in FIG. 7, which will not be repeated here.
  • the terminal device acquires the system timing of the second mode.
  • the terminal device controls the second communication unit to capture the system timing of the second system at time t3.
  • the terminal device calculates the system timing deviation between the first system and the second system according to the system timing conversion value of the first system and the system timing of the second system.
  • the terminal device controls the second communication unit to calculate the first standard and the second standard at time t3 according to the following third formula set System frame deviation, subframe deviation and subframe deviation.
  • the third formula set includes the following formulas:
  • F n1,n2 [(F n1,3 -F n2,3 )*T frm +(S n1,3 -S n2,3 )*T sfrm +(T n1,3 -T n2,3 )]/T frm ;
  • S n1,n2 ⁇ [(F n1,3 -F n2,3 )*T frm +(S n1,3 -S n2,3 )*T sfrm +(T n1,3 -T n2,3 )]/ T sfrm ⁇ %S frm ;
  • T n1,n2 [(F n1,3 -F n2,3 )*T frm +(S n1,3 -S n2,3 )*T sfrm +(T n1,3 -T n2,3 )]%T sfrm ;
  • the basic time unit is Ts
  • the values of T sfrm , T frm , and S frm are: 30720 Ts, 307200 Ts, and 10 subframes in this order.
  • F n1, n2 , S n1, n2 and T n1, n2 may be greater than 0, or may be less than 0 or equal to 0.
  • F n1, n2 , S n1, n2 and T n1, n2 may also use the difference between the system timing of the second system and the system timing of the first system, which will not be repeated here.
  • the second communication unit can calculate and calculate the system timing of the first system according to the first system when the first communication unit is in the awake state and the second communication unit is in the sleep state and stored in the common storage area without power failure
  • the system timing compensation value of the first mode is used to calculate the system timing conversion value of the first mode when the second communication unit is in the awake state and the first communication unit is in the sleep state.
  • the system timing conversion value and the system timing of the second system can be used to calculate the system timing deviation between the first system and the second system. This can avoid the need to wake up another process during the measurement of the system timing deviation between the first system and the second system.
  • a communication unit that should maintain a deep sleep state can reduce the power consumption of the communication device during the measurement of the system timing deviation between the first mode and the second mode.
  • system timing deviation measurement method shown in FIG. 8 may further include step 1 or step 2:
  • Step 1 When the first communication unit is in the awake state, the terminal device receives the system timing measurement task delivered by the first node.
  • Step 2 When the second communication unit is in the awake state, the terminal device receives the system timing measurement task delivered by the second node.
  • the system timing measurement task is used to instruct the terminal device to measure and report the system timing deviation between the system timing of the first mode and the system timing of the second mode.
  • Delivery method 1 When the first communication unit is in the wake-up state, the delivery is delivered by the first node.
  • Delivery method two when the second communication unit is in the awake state, it is delivered by the second node.
  • the terminal device may control the second communication unit to report the above system timing deviation to the second node during the wake-up of the second communication unit, or under the first communication unit During a wake-up, the first communication unit is controlled to report the above system timing deviation to the first node.
  • the node that receives the system timing deviation may be the node that delivers the system timing measurement task, or it may not be the node that delivers the system timing measurement task. That is to say, in the embodiments of the present application, there are the following two ways to report the system timing deviation:
  • Reporting method 1 Report to the first node.
  • Reporting method 2 Report to the second node.
  • first node and the second node may be any combination of the following nodes:
  • Combination 1 The first node is the primary node, and the second node is the secondary node.
  • Combination 2 The second node is the primary node, and the first node is the secondary node.
  • the system timing measurement task may be delivered by the master node, or may be delivered by the secondary node.
  • the terminal device can report the system timing deviation to the master node, and can also report the system timing deviation to the secondary node, which is not limited in this application.
  • Delivery reporting method 1 The master node delivers system timing measurement tasks and reports system timing deviation to the master node.
  • Second reporting method The secondary node delivers the system timing measurement task and reports the system timing deviation to the secondary node.
  • Delivery reporting method 3 The master node delivers the system timing measurement task, and reports the system timing deviation to the secondary node.
  • Delivery reporting method 4 The secondary node delivers the system timing measurement task and reports the system timing deviation to the primary node.
  • the terminal device only needs to report the system timing deviation to the node sending the timing measurement task during the next wake-up of the communication unit receiving the system timing measurement task, and does not require another node to receive Forward the system timing deviation reported by the terminal equipment, which simplifies the system timing deviation reporting process. It is applicable to the absence of an ideal backhaul interface between the first node and the second node. For example, there is no wired connection such as optical fiber and network cable, but only a wireless connection. Scenarios, you can avoid the adverse impact on the reliability of the reporting system timing deviation due to the uncertainty of the transmission delay between the nodes.
  • the terminal device can receive the system timing measurement task from one node during the wake-up of one communication unit, and complete the system timing deviation measurement during the wake-up of another communication unit and immediately report to the other node, and then The system timing deviation forwarded and reported by another node is more suitable for the ideal backhaul interface between the two nodes. If there is a wired connection such as optical fiber or network cable, it can be reported immediately after the system timing deviation measurement is completed without waiting.
  • the communication unit receiving the system timing measurement task reports again when it wakes up again, which can save the waiting time for reporting the system timing deviation (at least one wake-up period, such as 40ms, 80ms, 640ms, etc.), and can improve the timeliness of the reported system timing deviation.
  • FIG. 10 is a communication device provided by an embodiment of the present application, for performing the system timing management method described in the foregoing method embodiment.
  • the communication device 1000 includes: a common storage area 1003 that does not power down, a first communication unit 1001, and a second communication unit 1002.
  • the first communication unit 1001 is used to establish a first standard communication connection
  • the second communication unit 1002 is used to establish a second standard communication connection.
  • the first communication unit 1001 is used to acquire the system timing of the first standard when the first communication unit 1001 is in the awake state, and store the system timing of the first standard in the common storage area 1003 that does not power down.
  • the second communication unit 1002 is used to calculate the first standard according to the system timing of the first standard stored in the common storage area 1003 when the second communication unit 1002 is in the awake state and the first communication unit 1001 is in the sleep state System timing compensation value.
  • the second communication unit 1002 is also used to calculate the first communication when the second communication unit 1002 is in the awake state based on the system timing of the first system stored in the common storage area 1003 and the system timing compensation value of the first system When the unit 1001 is in the sleep state, the system timing conversion value of the first standard.
  • the first communication unit 1001 is also used to acquire the system timing of the first standard when the first communication unit 1001 is in the awake state and the second communication unit 1002 is in the sleep state, and the first standard
  • the system is stored in the public storage area 1003 which will not power down regularly.
  • the second communication unit 1002 is also used to acquire the system timing of the second mode when the second communication unit 1002 is in the awake state and the first communication unit 1001 is in the sleep state.
  • the second communication unit 1002 is also used to calculate the system timing deviation between the first system and the second system based on the system timing conversion value of the first system and the system timing of the second system.
  • the first communication unit 1001 is also used to receive system timing measurement tasks.
  • the system timing measurement task is used to measure the system timing deviation of the first system and the second system.
  • the second communication unit 1002 is also used to receive system timing measurement tasks.
  • the system timing measurement task is used to measure the system timing deviation of the first system and the second system.
  • the first communication unit 1001 is also used to send the system timing deviation when it is in the awake state again.
  • the second communication unit 1002 is further configured to send the system timing deviation of the first system and the second system when it is in the wake state this time.
  • the first node delivers and reports to the first node; the second node delivers and reports to The second node reports; the first node sends the report to the second node; the second node sends the report to the first node.
  • the communication device 1000 may be a terminal device or a chip provided inside the terminal device, such as a baseband processing chip, or a system chip including a radio frequency circuit, which is not limited in this application.
  • FIG. 11 is another communication device provided by an embodiment of the present application, and can be applied to the communication system shown in FIG. 1.
  • the communication device 1100 includes a processor 1101 and a transceiver 1102.
  • the processor 1101 is coupled to the transceiver 1102 and the memory 1103; the memory 1103 is used to store a computer program.
  • the processor 1101 is configured to execute the computer program stored in the memory 1103, so that the communication device 1100 performs the function of the terminal device in the system timing management method shown in FIG. 6 or FIG.
  • the processor 1101 is coupled to the transceiver 1102 and the memory 1103, and the processor 1101 may be connected to the transceiver 1102 and the memory 1103 through the bus 1104.
  • the communication device 1100 includes one or more processors and one or more transceivers.
  • the one or more processors are configured to support the communication device 1100 to perform the corresponding function of the terminal device in the above system timing management method.
  • the second communication unit is controlled to calculate the system timing compensation value and the conversion value of the first system, and the system timing deviation between the first system and the second system.
  • the transceiver is used to support the communication device 1100 to communicate with other devices to implement receiving and/or sending functions. For example, receiving system timing measurement tasks, or reporting system timing deviations.
  • the communication device 1100 may further include one or more memories, the memory is coupled to the processor, and is used to store program instructions and/or data necessary for the communication device 1100.
  • the one or more memories may be integrated with the processor, or may be set separately from the processor, which is not limited in this application.
  • the communication device 1100 may be a smart phone or a wearable device, etc.
  • the transceiver may be a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the communication device 1100 may also be a communication chip.
  • the transceiver may be an input/output circuit or an interface of the communication chip.
  • the communication device 1100 includes a transceiver, a processor, and a memory.
  • the processor is used to control the transceiver to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to run the computer program in the memory, so that the communication device 1100 executes the terminal in the system timing management method shown in FIG. 5 or FIG. 7 System timing management method completed by equipment.
  • the present application provides a communication system, which includes the above-mentioned communication device, and a plurality of nodes, such as the above-mentioned first node and second node.
  • the present application provides a readable storage medium that stores programs or instructions.
  • the computer is allowed to execute the system timing management method shown in FIG. 6 or FIG. 8.
  • the present application provides a computer program product, including computer program code.
  • the computer program code runs on a computer, the computer is allowed to execute the system timing management method shown in FIG. 6 or FIG. 8.
  • the processor in the embodiments of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration Circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electronically Erase programmable EPROM (EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • random access memory random access memory
  • static random access memory static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access Access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • double data Srate double data Srate
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DRRAM).
  • the above embodiments can be implemented in whole or in part by software, hardware (such as a circuit), firmware, or any other combination.
  • the above-described embodiments may be fully or partially implemented in the form of computer program products.
  • the computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (eg infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that contains one or more collections of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • At least one of the following or a similar expression refers to any combination of these items, including any combination of a single item or a plurality of items.
  • at least one item (a) in a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be a single or multiple .
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

La présente invention concerne un procédé de gestion de synchronisation de système et un dispositif de communication, qui peuvent maintenir en continu la synchronisation de système d'une première norme de sorte à fournir une référence pour une seconde unité de communication durant l'implémentation d'une planification de service et d'une configuration de ressources d'une seconde norme, ce qui permet d'améliorer le taux d'utilisation des ressources partagées et l'efficacité de travail et de réduire la consommation d'énergie. Le procédé comprend les étapes suivantes : en fonction d'une synchronisation de système d'une première norme obtenue et mémorisée dans une zone de mémoire commune sans mise hors tension lorsqu'une première unité de communication se trouve dans l'état activé, une seconde unité de communication calcule une valeur de compensation de synchronisation de système de la première norme lorsque la première unité de communication se trouve dans l'état de veille et calcule en outre une valeur de conversion de synchronisation de système de la première norme lorsque la première unité de communication se trouve dans l'état de veille.
PCT/CN2018/125000 2018-12-28 2018-12-28 Procédé de gestion de synchronisation de système et dispositif de communication WO2020133254A1 (fr)

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