WO2021012227A1 - Procédé de réglage de synchronisation pour un signal sans fil, équipement utilisateur et dispositif de réseau - Google Patents

Procédé de réglage de synchronisation pour un signal sans fil, équipement utilisateur et dispositif de réseau Download PDF

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Publication number
WO2021012227A1
WO2021012227A1 PCT/CN2019/097570 CN2019097570W WO2021012227A1 WO 2021012227 A1 WO2021012227 A1 WO 2021012227A1 CN 2019097570 W CN2019097570 W CN 2019097570W WO 2021012227 A1 WO2021012227 A1 WO 2021012227A1
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WIPO (PCT)
Prior art keywords
uplink
value
scs
transmission resource
bwp
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PCT/CN2019/097570
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English (en)
Chinese (zh)
Inventor
徐伟杰
石聪
唐海
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201980090312.7A priority Critical patent/CN113348705B/zh
Priority to PCT/CN2019/097570 priority patent/WO2021012227A1/fr
Publication of WO2021012227A1 publication Critical patent/WO2021012227A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present invention relates to the field of information processing technology, and in particular to a method for timing adjustment of wireless signals, user equipment (UE, User Equipment), network equipment, chips, computer-readable storage media, computer program products, and computer programs.
  • UE user equipment
  • UE User Equipment
  • network equipment chips
  • computer-readable storage media computer program products, and computer programs.
  • the uplink channel sent by the UE is set with a timing advance.
  • the timing advance (TA, Timing Advance) amount is sent to the UE by the network device.
  • the timing advance is defined as the uplink timing advance of the UE relative to the time of the received downlink signal.
  • This TA command is applied to the uplink channel of the UE as an absolute value; when the UE is in a normal connection state, the base station can also send a TA adjustment command to the UE; the UE updates the timing advance value according to the TA adjustment command, and updates the timing advance value based on SCS The timing granularity and the adjustment value indicated in the TA adjustment command determine the TA value.
  • the SCS corresponding to different carriers or different BWPs may be different, which will result in different timing granularities of different carriers or BWPs, so the TA adjustments provided by the prior art are still used. Problems such as the adjustment accuracy exceeding the range may occur, which affects the timing accuracy of the system and affects the processing efficiency of the system.
  • embodiments of the present invention provide a method for timing adjustment of wireless signals, user equipment (UE, User Equipment), network equipment, chips, computer-readable storage media, computer program products, and computer programs.
  • a method for timing adjustment of a wireless signal which is applied to a user equipment UE, and includes:
  • the first indication information is used to indicate the adjustment amount of the uplink timing advance TA;
  • a UE including:
  • the first communication unit receives first indication information; wherein the first indication information is used to indicate the adjustment amount of the uplink timing advance TA;
  • the first processing unit determines the uplink TA value of the at least one transmission resource based on the uplink TA adjustment amount included in the first indication information and the timing granularity of the subcarrier spacing SCS of the at least one transmission resource.
  • a wireless signal timing adjustment method is provided, which is applied to a network device, including:
  • the first indication information is used to indicate the adjustment amount of the uplink timing advance TA, and the uplink TA adjustment amount is used to separate the SCS timing particle from the subcarrier of at least one transmission resource To determine the uplink TA value of the at least one transmission resource.
  • a network device including:
  • the second communication unit sends first indication information to the UE; wherein the first indication information is used to indicate the adjustment amount of the uplink timing advance TA, and the uplink TA adjustment amount is used to communicate with at least one subcarrier of the transmission resource Interval the timing granularity of the SCS to determine the uplink TA value of the at least one transmission resource.
  • a UE including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned first aspect or each of its implementation modes.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory, and execute the method in the third aspect or its implementation manners.
  • a chip is provided for implementing the methods in the foregoing implementation manners.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first aspect to the second aspect or any of the implementations thereof method.
  • a computer-readable storage medium for storing a computer program that enables a computer to execute any one of the above-mentioned first aspect to the third aspect or the method in each implementation manner thereof.
  • a computer program product including computer program instructions that cause a computer to execute any one of the above-mentioned first to third aspects or the method in each implementation manner thereof.
  • a computer program which, when run on a computer, causes the computer to execute any one of the above-mentioned first to third aspects or the method in each implementation manner thereof.
  • the uplink TA of different transmission resources can be determined based on the indicated uplink TA adjustment amount. In this way, when the timing granularity of different SCSs is different, the uplink TA of different transmission resources can be determined to improve the timing accuracy of the system and ensure the processing efficiency of the system.
  • Figure 1-1 is a schematic diagram of a scenario of timing adjustment
  • FIG 1-2 Schematic Figure 1 of a communication system architecture provided by an embodiment of the present application
  • Figure 2-1 is a schematic flow chart 1 of a wireless signal timing adjustment method according to an embodiment of the present invention
  • FIG. 2-2 is a schematic diagram of the second flow of a wireless signal timing adjustment method provided by an embodiment of the present invention.
  • FIG. 3 and 4 are schematic diagrams of various timing adjustment scenarios provided by embodiments of the present invention.
  • FIG. 5 is a schematic diagram of a UE composition structure provided by an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of the composition structure of a network device provided by an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of the composition structure of a communication device provided by an embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • FIG. 9 is a second schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile Communication
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the communication system 100 applied by the embodiment of the present application may be as shown in FIG. 1-2.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a UE 120 (or called a communication terminal or a terminal).
  • the network device 110 may provide communication coverage for a specific geographic area, and may communicate with UEs located in the coverage area.
  • the network equipment 110 may be a network equipment (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a network equipment (NodeB, NB) in a WCDMA system, or an evolution in an LTE system Type network equipment (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment may be a mobile switching center, a relay station, an access point, In-vehicle devices, wearable devices, hubs, switches, bridges, routers, network side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB network equipment
  • LTE system Type network equipment Evolutional Node B, eNB or eNodeB
  • CRAN Cloud Radio Access Network
  • the network equipment may be a mobile switching center, a relay station, an access point, In-vehicle devices, wearable
  • the communication system 100 also includes at least one UE 120 located within the coverage area of the network device 110.
  • UE includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, and direct cable connection; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM-FM Broadcast transmitter; and/or another UE's device configured to receive/send communication signals; and/or Internet of Things (IoT) equipment.
  • a UE set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a “wireless terminal” or a "mobile terminal”.
  • direct terminal connection (Device to Device, D2D) communication may be performed between UEs 120.
  • the embodiment of the present invention provides a wireless signal timing adjustment method, which is applied to a UE, as shown in Figure 2-1, including:
  • Step 21 Receive first indication information; where the first indication information is used to indicate an adjustment amount of uplink timing advance (TA, Timing Advanced);
  • TA uplink timing advance
  • Step 22 Determine the uplink TA value of the at least one transmission resource based on the adjustment amount of the uplink TA included in the first indication information and the timing granularity of the subcarrier spacing SCS of the at least one transmission resource.
  • a wireless signal timing adjustment method provided in this embodiment is applied to a network device, as shown in Figure 2-2, including:
  • Step 31 Send first indication information to the UE
  • the first indication information is used to indicate the adjustment amount of the uplink timing advance TA, wherein the adjustment amount of the uplink TA is used to determine the timing granularity of the SCS spaced from the subcarrier of at least one transmission resource The uplink TA value of the transmission resource.
  • the at least one transmission resource may be one of the following: at least one carrier, at least one BWP, and at least one uplink channel. It should also be pointed out that the transmission resources may also include at least one carrier and its corresponding SCS and bandwidth size, or at least one BWP and its corresponding SCS and/or bandwidth size.
  • the first indication information may be information indicated by the network side for the UE through dynamic or semi-static signaling. It is used to adjust the TA adjustment value of the uplink TA of one or more carriers; correspondingly, the first indication information is used to determine the uplink TA of one or more carriers or one or more BWPs.
  • the foregoing semi-static signaling on the network side may be RRC, MAC CE, etc.
  • the dynamic signaling may be Downlink Control Information (DCI, Downlink Control Information), that is, the first indication information may be carried by the downlink control information DCI.
  • DCI Downlink Control Information
  • DCI Downlink Control Information
  • the signaling used for timing adjustment in the prior art is only semi-static, and the cycle of this signaling is as high as hundreds of milliseconds. If the signaling is used to send the first indication information, the UE cannot achieve the effect of quickly adjusting the timing advance parameter. Therefore, the introduction of dynamic signaling, that is, after the aforementioned DCI, can ensure that the UE quickly completes the uplink timing adjustment based on the first indication information carried in the received DCI within one millisecond.
  • the first indication information may be dedicated bits in the DCI.
  • the dynamic signaling form may be several bit fields in the ordinary physical layer scheduling DCI.
  • the aforementioned uplink timing adjustment amount is an integer value.
  • the dedicated bit can be a dedicated bit; when the dedicated bit has a value of 0, it can mean that TA is reduced by one advance unit. A value of 1 means that TA is increased by one advance unit.
  • the value of the advance unit is related to the SCS of the BWP, and the advance unit can be understood as the timing granularity.
  • the timing granularity of its uplink transmission takes the value x ⁇ 16 ⁇ 64 ⁇ T c /2 ⁇ . That is, the timing granularity can have multiple T c values.
  • T c is the smallest time unit used by the physical layer interface, defined as x can be a parameter that can be preset, and its value is equal to 1, or it can be greater than 1, and it can be set according to actual conditions, which is not limited here.
  • the UE mainly uses the uplink timing adjustment amount in the first indication information and the original uplink TA to generate a new uplink TA value.
  • the solution provided in this embodiment is more suitable for scenarios where the SCS of the carrier is different or the SCS of the BWP is different.
  • the UE may only receive the first indication information that meets the timing granularity of all BWPs.
  • each BWP can be configured with a specific SCS.
  • a UE can be activated with multiple BWPs of different SCS.
  • At least one transmission resource may be at least one carrier or at least one BWP. It is mainly aimed at the situation that one or more carriers or one or more BWPs are activated at the UE side at the same time.
  • the specific processing is as follows:
  • transmission resources other than the first transmission resource are called second transmission resources.
  • the determining the uplink TA value of the at least one carrier or the at least one BWP based on the uplink timing adjustment amount included in the first indication information and the timing granularity of the subcarrier spacing SCS of the at least one transmission resource includes:
  • the second uplink TA value of the second transmission resource is calculated.
  • the second transmission resource in this scenario may be multiple second transmission resources.
  • Each second transmission resource is processed in the same manner as described above to obtain the corresponding second uplink TA value.
  • the calculation of the first uplink TA value of the first transmission resource based on the timing granularity of the first SCS and the adjustment amount of the uplink TA may specifically include:
  • the current uplink timing adjustment value is obtained based on the granularity of the first SCS and the adjustment amount of the uplink TA, and the sum of the original uplink TA value and the uplink timing adjustment value of the first transmission resource is used as the adjusted first transmission resource The first upstream TA value.
  • the first uplink TA value of a transmission resource is the new uplink TA value of the first transmission resource calculated based on the original uplink TA value and the timing granularity of the first SCS.
  • the SCS of the second transmission resource is smaller than the first SCS.
  • the method provided in this scenario can be used for processing.
  • the second uplink TA value of the second transmission resource is calculated based on the timing granularity of the SCS of the second transmission resource other than the first transmission resource and the first uplink TA value of the first transmission resource, include:
  • Rounding is performed based on the calculation result of the first uplink TA value and the SCS coefficient of the second transmission resource; based on the rounding result and the timing granularity of the SCS of the second transmission resource, the second transmission resource is calculated.
  • Upstream TA value is calculated based on the calculation result of the first uplink TA value and the SCS coefficient of the second transmission resource.
  • N TA_new2 Round((N TA_new1 )/2 ⁇ 1- ⁇ 2 ) ⁇ 16 ⁇ 64/2 ⁇ 2 .
  • the rounding calculation uses Round() for rounding calculation; in addition, the calculation of rounding operation can also use floor() or ceiling() in addition to Round(), as long as the rounding calculation can be performed All are within the protection scope of this embodiment and will not be exhaustively listed.
  • How to adjust the uplink timing based on the first uplink TA value and multiple second uplink TA values may include the following processing methods:
  • Manner 1 Adjust the uplink timing of the second transmission resource based on the second uplink TA value
  • the uplink timing of the first transmission resource is adjusted directly based on the first uplink TA value, and the uplink timing of the multiple second transmission resources is adjusted separately based on the multiple second uplink TA values.
  • the first uplink TA value can be directly used for uplink timing adjustment.
  • multiple second transmission resources can be divided into comparisons with the first transmission resources. For example, if a second transmission resource is compared with the uplink TA value of the first transmission resource and does not exceed the corresponding accuracy range, then it can be based on all The uplink TA value of the second transmission resource performs timing advance adjustment on the second transmission resource; otherwise, no timing advance adjustment is performed on the second transmission resource.
  • the accuracy range may be a timing advance accuracy range corresponding to different SCSs of different second transmission resources.
  • SCS-1 can correspond to the first precision range
  • SCS-2 can correspond to the second precision range.
  • the following Table 1 is taken as an example for description.
  • the SCS is the second uplink TA value of the 15kHz second transmission resource minus the first uplink TA value (N TA_new2 -N TA_new1 )
  • the result is 128T c
  • the uplink TA value performs uplink timing adjustment on the second transmission resource. If the result obtained is 288T c, then the uplink timing adjustment on the second transmission resource may not be performed.
  • Other examples of accuracy ranges corresponding to SCS are also listed in the following table, which will not be exhaustive.
  • both the first uplink TA value and the second uplink TA value may include an offset, and the offset is pre-configuration or network device configuration.
  • the indicator TA value is used for transmission; wherein the transmission error is within a preset error range.
  • the generation of the transmission error can be understood as caused by the device on the UE side itself, for example, the transmission device on the UE side itself, or the error of the clock device on the UE side (such as a clock oscillator).
  • the transmission error needs to be within ⁇ 256T c . If the error range is not met, the transmission can be stopped.
  • the first uplink TA value may also include an offset
  • the second uplink TA value may also include an offset
  • one or more adjusted second uplink TA values can be obtained respectively.
  • N TA on the basis of a N TA
  • offset, a constant may be 0 or any other positive integer.
  • the value of the offset can be implicitly determined through other configurations. It can also be pre-configured through network device signaling.
  • the time point when the UE receives the signal may be the time limit of one downlink frame, and the downlink frame may be one of multiple downlink frames currently received, which may be referred to as downlink frame i.
  • the corresponding uplink frame i may include multiple transmission resources.
  • the transmission resource is taken as an example for illustration.
  • the uplink frame i includes two BWPs, namely BWP#0 and BWP#1.
  • BWP#0 can be called the first BWP
  • BWP#1 is called the second BWP
  • the first uplink TA value of BWP#0 is calculated , And then adjust the uplink timing of BWP#0 based on the first uplink TA value; the second uplink TA value of BWP#1 can be rounded to the corresponding timing granularity based on the first uplink TA value of the first BWP
  • the uplink timing adjustment of BWP#1 has a certain increment relative to the uplink timing adjustment of BWP#0.
  • Figure 3 also shows the use of the offset, for example, for BWP#0, it is obtained by increasing the offset (N TA, offset ) on the basis of the finally obtained first uplink TA value (N TA ) The result is the finally adjusted first uplink TA value of BWP#0.
  • the UE when the uplink BWP equipped with different SCSs on the carrier is activated, the UE can only receive one timing adjustment signal within a certain time.
  • the solution provided in this scenario can be adjusted in advance based on the BWP with the largest timing adjustment signal SCS, and the other BWPs are approximately rounded to solve the corresponding timing granularity and adjustment accuracy over-range problems.
  • the at least one transmission resource in this scenario may mainly be at least one BWP.
  • scenario 1 when the BWP of a carrier is switched after the TA command is implemented, if the SCS of the target BWP switched to is smaller than the SCS of the original BWP, the new timing advance is approximately rounded to the timing particle that matches the BWP. degree.
  • scenario 1 can be used in combination with scenario 1, that is, on the basis of scenario 1, after the uplink TA values corresponding to multiple carriers or multiple BWPs are determined, it is necessary to switch from the original BWP to the target BWP. When using the solution provided in this scenario.
  • the upstream TA of the original BWP is used as the upstream TA of the target BWP;
  • the uplink TA value of the original BWP and the timing granularity of the SCS corresponding to the target BWP are used to calculate the uplink TA value of the target BWP.
  • the timing granularity of the SCS of the target BWP is smaller than the timing granularity of the SCS of the original BWP, rounding is required. It can include:
  • Rounding is performed based on the calculation result of the uplink TA value of the original BWP and the SCS coefficient of the target BWP; based on the rounding result and the timing granularity of the SCS of the target BWP, the uplink TA value of the target BWP is calculated.
  • the timing adopted by the new BWP is rounded based on the timing particles corresponding to its SCS. It can be calculated as follows:
  • N TA_new2 Round((N TA_new1 )/2 ⁇ 1- ⁇ 2 ) ⁇ 16 ⁇ 64/2 ⁇ 2 .
  • ⁇ 2 is the SCS coefficient of the switching target BWP;
  • Round() is a rounding operation;
  • the TA value used by the original BWP is N TA_new1 ,
  • N TA_new2 is the uplink TA value of the target BWP, and (N TA_new1 )/2 ⁇ 1- ⁇ 2 is the aforementioned second value.
  • rounding calculation in the aforementioned formula uses Round() for rounding calculation; in addition, the calculation of rounding operation can also use floor() or ceiling(), etc., as long as it can be performed.
  • the forensic calculations are all within the protection scope of this embodiment and will not be exhaustively listed.
  • the method further includes: adjusting the uplink timing of the target BWP based on the obtained uplink TA value of the target BWP.
  • the upstream TA value of the target BWP is the same as the upstream TA value of the original BWP, the upstream TA value that can be used to adjust the upstream timing; when the upstream TA value of the target BWP is the same as the upstream TA value of the original BWP
  • the newly calculated uplink TA value of the target BWP is used to adjust the uplink timing of the target BWP.
  • the BWP#0 of the uplink frame i is the original BWP
  • the uplink frame i+1BWP#1 is the target BWP; wherein, the SCS of BWP#0 is greater than the SCS of BWP#1.
  • the starting point of the lower frame i is taken as the time point when the UE receives the signal.
  • the adjustment of the uplink TA controlled by the TA command can be used to determine its uplink TA value, which can include the offset value and its TA value; when switching from BWP#0 to BWP#1, it is based on BWP#1
  • the timing granularity of BWP#0 and the upstream TA value of the original BWP#0 are rounded off to determine the upstream TA value of BWP#1, and then the upstream timing adjustment is performed based on the upstream TA value of BWP#1.
  • the difference between BWP#0 and the time when the UE receives the signal is its uplink TA value; the difference between the starting point of BWP#1 and BWP#0 represents the uplink TA value of BWP#1 The increment between the upstream TA values relative to BWP#0.
  • the at least one transmission resource in this scenario may be at least one uplink channel.
  • This scenario is used for situations where the SCS of different uplink channels is different due to the switching of uplink channels.
  • This scenario can be used in combination with the aforementioned scenario 1 and/or scenario 2. For example, after scenario 1 is completed, after determining the uplink TA of multiple carriers or multiple BWPs, when the uplink channel needs to be switched, use this scenario to provide The solution; after the completion of the scenario 1 processing, when the BWP switch needs to be performed, the processing is based on the scenario 2 solution, and then if the uplink channel switch needs to be performed, then this scenario can be used for processing.
  • the uplink TA of the original uplink channel is used as the TA of the newly transmitted uplink channel
  • the uplink TA value of the original uplink channel and the timing granularity of the SCS of the newly transmitted uplink channel are used , Calculate the uplink TA value of the newly transmitted uplink channel.
  • the timing of the new transmission channel is rounded based on the timing particles corresponding to its SCS, and combined with the uplink TA value of the original uplink channel to determine the newly transmitted uplink channel
  • the upstream TA value can include:
  • Rounding is performed based on the calculation result of the uplink TA value of the original uplink channel and the SCS coefficient of the newly transmitted uplink channel; based on the result of the rounding and the timing granularity of the SCS of the newly transmitted uplink channel, the newly transmitted uplink channel is calculated The upstream TA value of the upstream channel.
  • N TA_new2 Round((N TA_new1 )/2 ⁇ 1- ⁇ 2 ) ⁇ 16 ⁇ 64/2 ⁇ 2 .
  • ⁇ 1 is the SCS coefficient of the original uplink transmission signal
  • ⁇ 2 is the SCS coefficient of the newly transmitted uplink channel
  • Round() is a rounding operation
  • N TA_new1 is the uplink TA value of the previous uplink channel.
  • the rounding calculation method in this scenario can also be floor() or ceiling().
  • the method further includes: adjusting the uplink timing of the new uplink channel based on the obtained uplink TA value of the new uplink channel. For example, when the SCS of the new uplink channel is equal to or greater than the SCS of the original uplink channel, the original uplink TA value can be used to adjust the uplink timing of the new uplink channel; otherwise, the timing granularity of the SCS of the new uplink channel can be used. And the uplink TA value of the original uplink channel, the uplink TA value of the newly transmitted uplink channel is calculated, and then the new uplink TA value of the newly transmitted uplink channel is used to adjust its uplink timing.
  • the uplink channel in this scenario can be a logical channel, that is, a carrier for the UE to send data to the network side, for example, it can be PUSCH, PUCCH, and so on.
  • the uplink TA values finally obtained in scenarios 2 and 3 may also include an offset, which will not be repeated.
  • Scenarios 2 and 3 are for situations where the transmission SCS changes when the BWP in a carrier is switched, or the transmission SCS changes due to other reasons (for example, when the SCS changes due to the switching of the uplink channel in scenario 3), it is also possible
  • the uplink TA value corresponding to the new BWP or the new uplink channel can be quickly adjusted to solve the SCS.
  • the problem of adjusting the timing granularity When there is a change, the problem of adjusting the timing granularity.
  • the embodiment of the present invention provides a UE, as shown in FIG. 5, including:
  • the first communication unit 41 receives first indication information; wherein the first indication information is used to indicate an adjustment amount of uplink timing advance (TA, Timing Advanced);
  • TA uplink timing advance
  • the first processing unit 42 determines the uplink TA value of the at least one transmission resource based on the adjustment amount of the uplink TA included in the first indication information and the timing granularity of the subcarrier spacing SCS of the at least one transmission resource.
  • a network device provided in this embodiment, as shown in FIG. 6, includes:
  • the second communication unit 51 sends first indication information to the UE
  • the first indication information is used to indicate the adjustment amount of the uplink timing advance TA, wherein the adjustment amount of the uplink TA is used to determine the timing granularity of the SCS spaced from the subcarrier of at least one transmission resource The uplink TA value of the transmission resource.
  • the at least one transmission resource may be one of the following: at least one carrier, at least one BWP, and at least one uplink channel. It should also be pointed out that the transmission resources may also include at least one carrier and its corresponding SCS and bandwidth size, or at least one BWP and its corresponding SCS and/or bandwidth size.
  • the first indication information may be information indicated by the network side for the UE through dynamic or semi-static signaling. It is used to adjust the TA adjustment value of the uplink TA of one or more carriers; correspondingly, the first indication information is used to determine the uplink TA of one or more carriers or one or more BWPs.
  • the foregoing semi-static signaling on the network side may be RRC, MAC CE, etc.
  • the dynamic signaling may be Downlink Control Information (DCI, Downlink Control Information), that is, the first indication information may be carried by the downlink control information DCI.
  • DCI Downlink Control Information
  • DCI Downlink Control Information
  • the first indication information may be dedicated bits in the DCI.
  • the dynamic signaling form may be several bit fields in the ordinary physical layer scheduling DCI.
  • the aforementioned uplink timing adjustment amount is an integer value.
  • the dedicated bit can be a dedicated bit; when the dedicated bit has a value of 0, it can mean that TA is reduced by one advance unit. A value of 1 means that TA is increased by one advance unit.
  • the value of the advance unit is related to the SCS of the BWP, and the advance unit can be understood as the timing granularity.
  • the timing granularity of its uplink transmission takes the value x ⁇ 16 ⁇ 64 ⁇ T c /2 ⁇ . That is, the timing granularity can have multiple T c values.
  • T c is the smallest time unit used by the physical layer interface, defined as x can be a parameter that can be preset, and its value is equal to 1, or it can be greater than 1, and it can be set according to actual conditions, which is not limited here.
  • At least one transmission resource may be at least one carrier or at least one BWP. It is mainly aimed at the situation that one or more carriers or one or more BWPs are activated at the UE side at the same time.
  • the specific processing is as follows:
  • the first processing unit 42 selects the largest SCS from the SCS of the at least one transmission resource as the first SCS, and uses the transmission resource corresponding to the first SCS as the first transmission resource.
  • transmission resources other than the first transmission resource are called second transmission resources. It should be understood that the number of second transmission resources may also be one or more.
  • the first processing unit 42 The first processing unit 42,
  • the second uplink TA value of the second transmission resource is calculated.
  • the second transmission resource in this scenario may be multiple second transmission resources.
  • Each second transmission resource is processed in the same manner as described above to obtain the corresponding second uplink TA value.
  • the calculation of the first uplink TA value of the first transmission resource based on the timing granularity of the first SCS and the adjustment amount of the uplink TA may specifically include:
  • the first processing unit 42 obtains the current uplink timing adjustment value based on the granularity of the first SCS and the adjustment amount of the uplink TA, and uses the sum of the original uplink TA value and the uplink timing adjustment value of the first transmission resource as the adjustment The first uplink TA value of the subsequent first transmission resource.
  • N TA_new1 (N TA_old1 + (T A -31) ⁇ 16 ⁇ 64/2 ⁇ 1 ).
  • the first uplink TA value of a transmission resource is the new uplink TA value of the first transmission resource calculated based on the original uplink TA value and the timing granularity of the first SCS.
  • the SCS of the second transmission resource is smaller than the first SCS.
  • the method provided in this scenario can be used for processing.
  • the first processing unit 42 performs rounding based on the calculation result of the first uplink TA value and the SCS coefficient of the second transmission resource; based on the rounding result and the timing granularity of the SCS of the second transmission resource, calculates the first 2.
  • the second uplink TA value of the transmission resource is based on the calculation result of the first uplink TA value and the SCS coefficient of the second transmission resource.
  • N TA_new2 Round((N TA_new1 )/2 ⁇ 1- ⁇ 2 ) ⁇ 16 ⁇ 64/2 ⁇ 2 .
  • the rounding calculation in the aforementioned formula uses Round() for rounding calculation; in addition, the calculation of rounding operation can also use floor() or ceiling() in addition to Round(). Within the protection scope of this embodiment, the exhaustive list will not be given.
  • how to adjust A based on the first uplink TA value and multiple second uplink TA values can include the following processing methods:
  • the uplink timing of the first transmission resource is adjusted.
  • the uplink timing of the first carrier or the first BWP is adjusted directly based on the first uplink TA value, and the uplink timing of the multiple second carriers or the multiple second BWPs are respectively adjusted based on the multiple second uplink TA values Make adjustments.
  • the uplink timing of the second transmission resource is adjusted based on the second uplink TA value.
  • the uplink TA value of the second carrier or the second BWP is used to adjust the timing advance with the uplink TA value of the first carrier or the first BWP.
  • multiple second transmission resources can be divided into comparisons with the first transmission resources. For example, if a second transmission resource is compared with the uplink TA value of the first transmission resource and does not exceed the corresponding accuracy range, then it can be based on all The uplink TA value of the second transmission resource performs timing advance adjustment on the second transmission resource; otherwise, no timing advance adjustment is performed on the second transmission resource.
  • the accuracy range may be a timing advance accuracy range corresponding to different SCSs of different second transmission resources.
  • both the first uplink TA value and the second uplink TA value may include an offset, and the offset is pre-configuration or network device configuration.
  • the first processing unit 42 uses the second uplink TA value as the indicated TA value of the second transmission resource; when an uplink signal is transmitted in the second transmission resource, uses the indicated TA value for transmission; wherein, The transmission error is within a preset error range.
  • the generation of the transmission error can be understood as caused by the device on the UE side itself, for example, the transmission device on the UE side itself, or the error of the clock device on the UE side (such as a clock oscillator).
  • the at least one transmission resource in this scenario may mainly be at least one BWP.
  • scenario 1 when the BWP of a carrier is switched after the TA command is implemented, if the SCS of the target BWP switched to is smaller than the SCS of the original BWP, the new timing advance is approximately rounded to the timing particle that matches the BWP. degree.
  • scenario 1 can be used in combination with scenario 1, that is, on the basis of scenario 1, after the uplink TA values corresponding to multiple carriers or multiple BWPs are determined, it is necessary to switch from the original BWP to the target BWP. When using the solution provided in this scenario.
  • the first processing unit 42 if the original BWP is switched to the target BWP, and the SCS of the target BWP is not less than the SCS of the original BWP, the uplink TA of the original BWP is used as the uplink TA of the target BWP;
  • the uplink TA value of the original BWP and the timing granularity of the SCS corresponding to the target BWP are used to calculate the uplink TA value of the target BWP.
  • the first processing unit 42 performs rounding based on the calculation result of the uplink TA value of the original BWP and the SCS coefficient of the target BWP; and calculates the target BWP based on the rounding result and the timing granularity of the SCS of the target BWP The upstream TA value.
  • the timing adopted by the new BWP is rounded based on the timing particles corresponding to its SCS. It can be calculated as follows:
  • N TA_new2 Round((N TA_new1 )/2 ⁇ 1- ⁇ 2 ) ⁇ 16 ⁇ 64/2 ⁇ 2 .
  • ⁇ 2 is the SCS coefficient of the switching target BWP;
  • Round() is a rounding operation;
  • the TA value used by the original BWP is N TA_new1 , N TA_new2 is the upstream TA value of the target BWP.
  • rounding calculation in the aforementioned formula uses Round() for rounding calculation; in addition, the calculation of rounding operation can also use floor() or ceiling(), etc., as long as it can be performed.
  • the forensic calculations are all within the protection scope of this embodiment and will not be exhaustively listed.
  • the first processing unit 42 adjusts the uplink timing of the target BWP based on the obtained uplink TA value of the target BWP.
  • the upstream TA value of the target BWP is the same as the upstream TA value of the original BWP
  • the upstream TA value that can be used to adjust the upstream timing when the upstream TA value of the target BWP is the same as the upstream TA value of the original BWP
  • the newly calculated uplink TA value of the target BWP is used to adjust the uplink timing of the target BWP.
  • the at least one transmission resource in this scenario may be at least one uplink channel.
  • This scenario is used for situations where the SCS of different uplink channels is different due to the switching of uplink channels.
  • This scenario can be used in combination with the aforementioned scenario 1 and/or scenario 2. For example, after scenario 1 is completed, after determining the uplink TA of multiple carriers or multiple BWPs, when the uplink channel needs to be switched, use this scenario to provide The solution; after the completion of the scenario 1 processing, when the BWP switch needs to be performed, the processing is based on the scenario 2 solution, and then if the uplink channel switch needs to be performed, then this scenario can be used for processing.
  • the first processing unit 42 if the SCS of the newly transmitted uplink channel is adjusted, when the SCS of the newly transmitted uplink channel is not less than the SCS of the original uplink channel, the uplink TA of the original uplink channel is used as the TA of the newly transmitted uplink channel;
  • the uplink TA value of the original uplink channel and the timing granularity of the SCS of the newly transmitted uplink channel are used , Calculate the uplink TA value of the newly transmitted uplink channel.
  • the first processing unit 42 performs rounding based on the calculation result of the uplink TA value of the original uplink channel and the SCS coefficient of the newly transmitted uplink channel; based on the result obtained by the rounding and the SCS of the newly transmitted uplink channel
  • the timing granularity is calculated to obtain the uplink TA value of the newly transmitted uplink channel. It can be calculated as follows:
  • N TA_new2 Round((N TA_new1 )/2 ⁇ 1- ⁇ 2 ) ⁇ 16 ⁇ 64/2 ⁇ 2 .
  • the rounding calculation method in this scenario can also be floor() or ceiling().
  • the first processing unit 42 adjusts the uplink timing of the new uplink channel based on the obtained uplink TA value of the new uplink channel. For example, when the SCS of the new uplink channel is equal to or greater than the SCS of the original uplink channel, the original uplink TA value can be used to adjust the uplink timing of the new uplink channel; otherwise, the timing granularity of the SCS of the new uplink channel can be used. And the uplink TA value of the original uplink channel, the uplink TA value of the newly transmitted uplink channel is calculated, and then the new uplink TA value of the newly transmitted uplink channel is used to adjust its uplink timing.
  • the uplink TA finally obtained in scenarios 2 and 3 may also include an offset, which will not be repeated.
  • Scenarios 2 and 3 are for situations where the transmission SCS changes when the BWP in a carrier is switched, or the transmission SCS changes due to other reasons (for example, when the SCS changes due to the switching of the uplink channel in scenario 3), it is also possible
  • the uplink TA value corresponding to the new BWP or the new uplink channel can be quickly adjusted to solve the SCS.
  • the timing granularity is adjusted.
  • FIG. 7 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present invention.
  • the communication device in this embodiment may be specifically the network device or the terminal device in the foregoing embodiment.
  • the communication device 600 shown in FIG. 7 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.
  • the communication device 600 may further include a memory 620.
  • the processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present invention.
  • the memory 620 may be a separate device independent of the processor 610, or it may be integrated in the processor 610.
  • the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send information or data to other devices, or receive other devices. Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 600 may specifically be a network device according to an embodiment of the present invention, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present invention. For the sake of brevity, details are not repeated here. .
  • the communication device 600 may specifically be a terminal device or a network device according to an embodiment of the present invention, and the communication device 600 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present invention. It’s concise and will not be repeated here.
  • the chip 700 may further include a memory 720.
  • the processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present invention.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the chip 700 may further include an input interface 730.
  • the processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.
  • the chip 700 may further include an output interface 740.
  • the processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present invention, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present invention.
  • the chip can be applied to the network device in the embodiment of the present invention, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiment of the present invention.
  • the chip mentioned in the embodiment of the present invention may also be called a system-level chip, a system-on-chip, a system-on-chip, or a system-on-chip, etc.
  • the processor in the embodiment of the present invention may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA ready-made programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiment of the present invention may be a volatile memory or a 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), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM SLDRAM
  • DR RAM Direct Rambus RAM
  • the memory in the embodiment of the present invention may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc.
  • static random access memory static random access memory
  • SRAM static random access memory
  • dynamic RAM dynamic random access memory
  • Synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate SDRAM double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • synchronous connection Dynamic random access memory strip link DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • FIG. 9 is a schematic block diagram of a communication system 800 provided by an embodiment of the present application. As shown in FIG. 9, the communication system 800 includes a terminal device 810 and a network device 820.
  • the terminal device 810 may be used to implement the corresponding functions implemented by the UE in the foregoing method
  • the network device 820 may be used to implement the corresponding functions implemented by the network device in the foregoing method.
  • details are not described herein again.
  • the embodiment of the present invention also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device or the terminal device in the embodiment of the present invention, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention, for the sake of brevity , I won’t repeat it here.
  • the computer program product can be applied to the network device or the terminal device in the embodiment of the present invention, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention.
  • the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present invention.
  • I will not repeat them here.
  • the embodiment of the present invention also provides a computer program.
  • the computer program can be applied to the network device or the terminal device in the embodiment of the present invention.
  • the computer program runs on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present invention. , For the sake of brevity, I will not repeat it here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • 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 can be combined or It 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 they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present invention 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 invention essentially or the part that contributes to the existing technology or the 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 make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present invention.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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

Abstract

La présente invention concerne un procédé de réglage de la synchronisation d'un signal sans fil, un équipement d'utilisateur (UE), un dispositif de réseau, une puce, un support de stockage lisible par ordinateur, un produit de programme informatique et un programme informatique. Le procédé consiste à : recevoir des premières informations d'indication, les premières informations d'indication étant utilisées pour indiquer une quantité de réglage d'avance de synchronisation (TA) de liaison montante; et sur la base de la quantité de réglage de TA de liaison montante comprise dans les premières informations d'indication et de la granularité de synchronisation d'un intervalle de sous-porteuse SCS d'au moins une ressource de transmission, déterminer une valeur de TA de liaison montante de la ou des ressources de transmission.
PCT/CN2019/097570 2019-07-24 2019-07-24 Procédé de réglage de synchronisation pour un signal sans fil, équipement utilisateur et dispositif de réseau WO2021012227A1 (fr)

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PCT/CN2019/097570 WO2021012227A1 (fr) 2019-07-24 2019-07-24 Procédé de réglage de synchronisation pour un signal sans fil, équipement utilisateur et dispositif de réseau

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