WO2020042808A1 - 用户设备参数的确定方法及装置、存储介质、基站 - Google Patents
用户设备参数的确定方法及装置、存储介质、基站 Download PDFInfo
- Publication number
- WO2020042808A1 WO2020042808A1 PCT/CN2019/096463 CN2019096463W WO2020042808A1 WO 2020042808 A1 WO2020042808 A1 WO 2020042808A1 CN 2019096463 W CN2019096463 W CN 2019096463W WO 2020042808 A1 WO2020042808 A1 WO 2020042808A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- user equipment
- network
- radio frame
- determining
- trip time
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/19—Earth-synchronous stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/005—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by adjustment in the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
- H04W56/006—Synchronisation arrangements determining timing error of reception due to propagation delay using known positions of transmitter and receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
- H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
- H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
- H04W56/009—Closed loop measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
Definitions
- the present invention relates to the technical field of wireless communications, and in particular, to a method and device for determining user equipment parameters, a storage medium, and a base station.
- the 3rd Generation Partnership Project (3GPP) is working on the fifth-generation mobile communications (5G) New Radio (NR) non-terrestrial communications network (Non Terrieral Network (NTN for short).
- 5G NTN mainly includes Geostationary Earth Orbits Satellites (GEO) / Medium Orbiting Satellites (MEO) / Low Orbit Satellites (short for Earth Orbit Statellites) LEO) and airborne vehicles (Highborne Altitude Platforms, referred to as HAPS).
- GEO Geostationary Earth Orbits Satellites
- MEO Medium Orbiting Satellites
- LEO Low Orbit Satellites
- HAPS Highborne Altitude Platforms
- the main feature of NTN is that its round trip time (Round, Trip Time, RTT for short) is relatively long, generally from several milliseconds to several hundred milliseconds.
- Table 1 shows the one-way delay in different NTN deployment scenarios. RTT is twice the one-way delay.
- Table 1 also lists related parameters of land network cellular communications (with
- timing advance into a specific TA part for each user equipment (User Equipment (UE)) and a fixed TA part applicable to all UEs.
- the fixed TA part applicable to all UEs can be sent to the UE through a system message.
- a similar scheme can also be adopted for the time from the slot where the uplink resource carrying the uplink (UL) grant instruction information to the slot where the UL grant resource is located (K2 for short), but
- K2 for short
- the technical problem solved by the present invention is how to determine user equipment parameters such as TA and / or K2 to minimize protocol modification and reduce software and hardware maintenance costs.
- an embodiment of the present invention provides a method for determining user equipment parameters.
- the method for determining user equipment parameters includes: determining a minimum round-trip time between each user equipment and a satellite in a cell; and according to the minimum The round-trip time and the frame information of the downlink radio frame on the network side determine the frame information of the uplink radio frame on the network side, and the minimum round-trip time is the time difference between the uplink radio frame on the network side lagging the downlink radio frame on the network side; based on the network side
- the uplink radio frame and the network-side downlink radio frame determine user equipment parameters of each user equipment, and the user equipment parameters are TA and / or K2.
- the determining the minimum round-trip time between each user equipment in the cell and the satellite includes: determining the minimum round-trip time between each user equipment in the cell and the satellite according to the height of the satellite.
- the minimum round-trip time is counted in time slots, and the minimum round-trip time is obtained by rounding down the time slot; or, the minimum round-trip time is counted in subframes, and the minimum round-trip time is pair-wise.
- the frame is rounded down.
- the minimum round trip time is transparent to each user equipment.
- the user equipment parameter is TA
- determining the user equipment parameters of each user equipment based on the network-side uplink radio frame and the network-side downlink radio frame includes: receiving an uplink signal sent by each user equipment; The uplink signal, the network-side downlink radio frame, and the network-side uplink radio frame calculate a TA of each user equipment.
- the user equipment parameter is K2
- determining the user equipment parameter of each user equipment based on the network-side uplink radio frame and the network-side downlink radio frame includes: when uplink scheduling is performed for each user equipment, Calculate K2 of each user equipment according to the network-side uplink radio frame and the network-side downlink radio frame.
- an embodiment of the present invention further provides a device for determining user equipment parameters.
- the device for determining user equipment parameters includes: a first determining module, adapted to determine a relationship between each user equipment in a cell and a satellite.
- a minimum round-trip time a second determining module, adapted to determine frame information of a network-side uplink radio frame based on the minimum round-trip time and frame information of a network-side downlink radio frame, the minimum round-trip time being a delay of the network-side uplink radio frame A time difference of the network-side downlink radio frame; a third determination module, adapted to determine user equipment parameters of each user equipment based on the network-side uplink radio frame and the network-side downlink radio frame, the user equipment parameters being TA and / Or K2.
- the first determining module includes: a determining submodule adapted to determine a minimum round-trip time between each user equipment in the cell and the satellite according to the height of the satellite.
- the minimum round-trip time is counted in time slots, and the minimum round-trip time is obtained by rounding down the time slot; or, the minimum round-trip time is counted in subframes, and the minimum round-trip time is pair-wise.
- the frame is rounded down.
- the minimum round trip time is transparent to each user equipment.
- the user equipment parameter is TA
- the third determining module includes: a receiving sub-module adapted to receive an uplink signal sent by each user equipment; a first computing sub-module adapted to receive the uplink signal, the The minimum round-trip time of the downlink radio frame on the network side and the uplink radio frame on the network side calculate the TA of each user equipment.
- the user equipment parameter is K2
- the third determination module includes: a second calculation sub-module adapted to perform uplink scheduling for each user equipment according to the uplink radio frame on the network side and the network The side downlink radio frame calculates K2 for each user equipment.
- an embodiment of the present invention further provides a storage medium having computer instructions stored thereon, where the computer instructions execute the steps of the method for determining a right user equipment parameter when running.
- an embodiment of the present invention further provides a base station, including a memory and a processor.
- the memory stores computer instructions that can run on the processor.
- the processor runs the computer instructions, The steps of the above method for determining user equipment parameters are performed.
- An embodiment of the present invention provides a method for determining user equipment parameters.
- the method for determining user equipment parameters includes: determining a minimum round-trip time between each user equipment and a satellite in a cell; and according to the minimum round-trip time and network-side downlink.
- the frame information of the radio frame determines the frame information of the uplink radio frame on the network side, and the minimum round-trip time is the time difference between the uplink radio frame on the network side and the downlink radio frame on the network side; each user is determined based on the uplink radio frame on the network side User device parameters for the device.
- the minimum round-trip time can be used as the time difference between the network-side uplink radio frame and the network-side downlink radio frame to lag the network-side uplink radio frame, and the network-side uplink radio frame can be obtained, and based on the network-side uplink
- the radio frame determines the value of TA and / or K2, so that the UE can send and receive data based on the network-side uplink radio frame and the network-side downlink radio frame, adjust the long round-trip time in NTN through the network, and minimize the impact on the land network.
- the modification of UE software and hardware can effectively prevent the UE from increasing software and hardware maintenance costs, and can support NTN communication.
- the minimum round trip time is transparent to each user equipment.
- the UE does not need to know the minimum round-trip time, and the introduction of the network-side uplink radio frame by the network side can make the NT and UE's TA and K2 very small, which minimizes the UE's modification of related protocols. To reduce UE maintenance costs.
- FIG. 1 is a schematic diagram of a method for determining user equipment parameters in the prior art
- FIG. 2 is a schematic flowchart of a method for determining user equipment parameters according to an embodiment of the present invention
- FIG. 3 is a schematic diagram of a specific implementation scenario of a method for determining user equipment parameters according to an embodiment of the present invention
- FIG. 4 is a schematic flowchart of an apparatus for determining user equipment parameters according to an embodiment of the present invention.
- the prior art solution determines the TA as the sum of the specific TA part of each UE and the fixed TA parts of all UEs, and sends the fixed TA part through a system message.
- a similar method may be adopted from the time slot (K2) where the uplink resource indicated by the uplink (UL) grant is granted to the time slot where the UL grant is received.
- the current determination methods of TA and K2 will cause the values of TA and K2 to greatly exceed the currently defined values of TA and K2 in the land network.
- the one-way transmission delay from the time slot 0 of the frame of the network base station (for example, gNodeB (gNB) for short) to the time when the UE receives the frame data is more than 5ms.
- the RTT between UEs is more than 11ms.
- the gNB configures a TA for the UE so that the UE can complete uplink transmission in a desired time slot.
- the UE performs uplink data transmission more than 11 ms in advance (that is, TA compensates for about 11 ms) to enable the UE's uplink signal to align with the uplink frame on the network base station side when it reaches the network base station.
- the uplink grant received by the UE in time slot 0 of frame 1 indicates that the UE can send data in time slot 4 of frame 2, and the K2 value should be 14 time slots.
- the minimum RTT between the gNB and the UE can be used as the fixed TA part and broadcasted through a system message, and the specific TA part can be notified to each UE by the gNB through a Timing Advance Command.
- K2 the specific TA part
- other subcarrier intervals can be deduced by analogy and will not be described again.
- the prior art solution needs to modify the protocol.
- the UE in order to support NTN communication, it is also necessary to implement software and hardware inspection and update in related aspects, and to maintain related variables, which will increase software and hardware maintenance costs.
- an embodiment of the present invention provides a method for determining user equipment parameters.
- the method for determining user equipment parameters includes: determining a minimum round-trip time between each user equipment and a satellite in a cell; The round-trip time and the frame information of the downlink radio frame on the network side determine the frame information of the uplink radio frame on the network side, and the minimum round-trip time is the time difference between the uplink radio frame on the network side lagging the downlink radio frame on the network side; based on the network side
- the uplink radio frame and the network-side downlink radio frame determine user equipment parameters of each user equipment, and the user equipment parameters include TA and / or K2.
- the minimum round-trip time can be used as the time difference between the network-side uplink radio frame and the network-side downlink radio frame to lag the network-side uplink radio frame, and the network-side uplink radio frame can be obtained, and based on the network-side uplink
- the radio frame determines TA and / or K2, so that the UE can send and receive data based on the network-side uplink radio frame and the network-side downlink radio frame, adjust the long round-trip time in the NTN through the network, and minimize the softness of the UE on the land network.
- the modification of the hardware can effectively prevent the UE from increasing software and hardware maintenance costs, and can support NTN communication.
- FIG. 2 is a schematic flowchart of a method for determining user equipment parameters according to an embodiment of the present invention.
- the network can balance the different transmission delays by adjusting the upload time of each UE, so that the uplink signals of each UE reach the base station synchronously. For example, compared with UEs closer to the base station, the transmission time of UEs farther from the base station is longer, so UEs farther from the base station need to send uplink data in advance.
- the time to send in advance is calculated by the base station and notified to the UE.
- the base station can configure a TA for each UE and send it to the UE, and the UE adjusts the uplink data transmission time according to the TA, thereby achieving time synchronization on the base station side.
- the value range of TA and / or K2 greatly exceeds the value range currently defined.
- an embodiment of the present invention provides a method for determining user equipment parameters. Specifically, the method may include the following steps:
- Step S101 Determine a minimum round-trip time between each user equipment and a satellite in the cell;
- Step S102 Determine frame information of a network-side uplink radio frame according to the minimum round-trip time and frame information of a network-side downlink radio frame, where the minimum round-trip time is that the network-side uplink radio frame lags the network-side downlink radio frame. Time difference;
- Step S103 Determine user equipment parameters of each user equipment based on the network-side uplink radio frame and the network-side downlink radio frame, where the user equipment parameters are TA and / or K2.
- the NTN base station may determine a round-trip time between each UE and a satellite in the cell, and then obtain a minimum round-trip time between the base station and the UE.
- the NTN base station may determine the minimum round-trip time between each UE in the cell and the satellite according to the height of the satellite. For example, the round-trip time of each UE and the satellite is compared to obtain the minimum round-trip time. Preferably, the NTN base station may assume that a certain UE is located at a land plane position closest to the satellite, and determine the round-trip time between the UE and the satellite as the minimum round-trip time.
- the NTN base station may determine the frame information of the uplink radio frame on the network side according to the obtained minimum round-trip time and the frame information of the downlink radio frame on the network.
- the network does not distinguish between downlink radio frames on the network side and uplink radio frames on the network side, and only uses the radio frames on the network side as a reference for data transmission and reception.
- the base station can determine a network-side downlink radio frame and a network-side uplink radio frame for the network side.
- the frame information of the network-side downlink radio frame and the network-side uplink radio frame may be different.
- the uplink radio frame on the network side lags the downlink radio frame on the network side.
- the uplink and downlink timing of the NTN base station is different, and the frame information of the uplink radio frame on the network side may be determined according to the minimum round-trip time and the frame information of the downlink radio frame on the network side.
- the frame information may include one or more pieces of information such as a frame number, a slot number, index information of a subframe number, and a number of slots included in a radio frame.
- the frame information of the uplink radio frame on the network side may be changed according to the change of the specific application, and it will not be repeated here.
- the time difference between the network-side uplink radio frame lagging the network-side downlink radio frame may be the minimum round-trip time. After determining frame information of the network-side downlink radio frame, the minimum round-trip time may be delayed to obtain frame information of the network-side uplink radio frame.
- uplink and downlink radio frames on the network side have different timings.
- the frame number of the downlink radio frame on the network side at this time may be different from the frame number of the uplink radio frame on the network side, and the time slot in the downlink radio frame on the network side The number is also different from the time slot number in the uplink radio frame on the network side.
- the frame number and timeslot number of the network-side uplink radio frame and the network-side downlink radio frame may be different. As shown in Figure 3, taking 15kHz as an example, each frame includes 10 time slots, from time slot 0 to time slot 9 .
- the gNB sends an uplink grant in frame 1 slot 0, instructing the UE to perform uplink transmission in frame 1 slot 3, where K2 is 3 slots, and K2 is determined according to the network-side downlink radio frame and network-side uplink radio frame.
- the timing of the uplink radio frame on the network side is lagging behind the timing of the downlink radio frame.
- the lag time can be the minimum round-trip time or the result obtained by rounding down the time slot.
- the frame number of the network-side uplink radio frame and the network-side downlink radio frame at this time may be different, and the network-side downlink radio frame
- the number of sub-frames is also different from the number of sub-frames in the uplink radio frame on the network side.
- the minimum RTT may be a slot count. Normally, the duration of each time slot is 1 ms. Those skilled in the art understand that the minimum RTT is obtained by rounding down the time slot to determine the uplink radio frame on the network side. Alternatively, the minimum RTT may use a subframe count. Those skilled in the art understand that the minimum RTT is obtained by rounding down a subframe to determine the uplink radio frame on the network side.
- the NTN base station may determine and notify the UE according to a calculation method in the prior art. For simplicity, the detailed calculation process is not described here again.
- step S103 the timing difference between the uplink and downlink of the NTN base station is transparent to the NTN UE. That is, for the UE, the UE does not need to know that there is a difference in uplink and downlink timing of the NTN base station.
- the NTN base station may use the uplink signal sent by the UE to calculate TA by combining the network-side uplink radio frame and the network-side downlink radio frame.
- the NTN base station may determine the value of the TA by measuring the received random access preamble when the UE performs random access.
- the NTN base station determines the UE, the calculation is based on the uplink radio frame on the network side, that is, when the NTN base station calculates the TA, the minimum round-trip time (that is, the uplink radio frame on the network side lags the downlink radio frame on the network side Time difference).
- the NTN base station can calculate the TA based on the measured random access preamble, and the calculated TA value is relatively small, which can minimize the modification of the existing protocol.
- the steps of determining K2 are similar to the steps of determining TA.
- the NTN base station side may deduct the minimum round-trip time.
- the NTN base station may calculate the value of K2 after subtracting the time difference between the uplink radio frame on the network side and the downlink radio frame on the network side, and the specific calculation process is not described again.
- the NTN base station may send the calculation result (that is, the determined TA) to the UE through a timing advance command (Timing, Advance Command).
- the NTN base station may send the timing advance command field of the random access response to the UE.
- the user equipment parameters TA and / or K2 in the NTN network can be determined for the UE without modifying the UE protocol. Moreover, it is possible to minimize the modification of the related protocols on the UE side and reduce the UE maintenance cost.
- FIG. 4 is a schematic flowchart of a user equipment parameter determining apparatus according to an embodiment of the present invention.
- the user equipment parameter determining apparatus 4 (referred to as determining apparatus 4) may be used to implement the user equipment parameters shown in FIG. 2 and FIG. 3 described above.
- the technical solution of the determination method is applied to the network side, for example, it is performed by an NTN base station (for example, 5G gNB).
- NTN base station for example, 5G gNB
- the determining device 4 may include a first determining module 41, a second determining module 42, and a third determining module 43.
- the first determining module 41 is adapted to determine a minimum round-trip time between each user equipment and a satellite in the cell; and the second determining module 42 is adapted to calculate the minimum round-trip time and the downlink radio on the network side.
- the frame information of the frame determines the frame information of the uplink radio frame on the network side, and the minimum round-trip time is the time difference between the uplink radio frame on the network side and the downlink radio frame on the network side;
- the third determining module 43 is adapted to be based on the The network-side uplink radio frame and the network-side downlink radio frame determine user equipment parameters of each user equipment, and the user equipment parameters are TA and / or K2.
- the first determining module 41 may include a determining sub-module 411.
- the determining sub-module 411 is adapted to determine a minimum round-trip time between each user equipment in the cell and the satellite according to the height of the satellite.
- the minimum round-trip time is counted by time slots, and the minimum round-trip time is obtained by rounding down the time slots; or, the minimum round-trip time is counted by sub-frames, and the minimum round-trip time is calculated by sub-frames. Get the next round.
- the minimum round trip time is transparent to each user equipment.
- the user equipment parameter is TA
- the third determining module 43 may include a receiving sub-module 431 and a first computing sub-module 432.
- the receiving sub-module 431 is adapted to receive an uplink signal sent by each user equipment;
- the first calculation sub-module 432 is adapted to receive the uplink signal, the network-side downlink radio frame, and the network-side uplink according to the uplink signal
- the radio frame calculates the TA of each user equipment.
- the user equipment parameter is K2
- the third determination module 43 may include a second calculation sub-module 433. Specifically, when the second calculation submodule is adapted to perform uplink scheduling for each user equipment, K2 of each user equipment is calculated according to the network-side uplink radio frame and the network-side downlink radio frame.
- an embodiment of the present invention also discloses a storage medium having computer instructions stored thereon.
- the computer instruction executes steps of the method for determining user equipment parameters in the embodiments shown in FIG. 2 and FIG. 3.
- the storage medium may include a computer-readable storage medium such as a non-volatile memory or a non-transitory memory.
- the computer-readable storage medium may include a ROM, a RAM, a magnetic disk, or an optical disk.
- an embodiment of the present invention further discloses a base station, which includes a memory and a processor.
- the memory stores computer instructions capable of running on the processor, and the processor executes the computer instructions when the processor runs the computer instructions.
- the base station may be a satellite base station.
- the prior art solution determines the TA as the sum of the specific TA part of each UE and the fixed TA parts of all UEs, and sends the fixed TA part through a system message.
- a similar method may be adopted from the time slot (K2) where the uplink resource indicated by the uplink (UL) grant is granted to the time slot where the UL grant is received.
- the current determination methods of TA and K2 will cause the values of TA and K2 to greatly exceed the currently defined values of TA and K2 in the land network.
- the one-way transmission delay from the time slot 0 of the frame of the network base station (for example, gNodeB (gNB) for short) to the time when the UE receives the frame data is more than 5ms.
- the RTT between UEs is more than 11ms.
- the gNB configures a TA for the UE so that the UE can complete uplink transmission in a desired time slot.
- the UE performs uplink data transmission more than 11 ms in advance (that is, TA compensates for about 11 ms) to enable the UE's uplink signal to align with the uplink frame on the network base station side when it reaches the network base station.
- the uplink grant received by the UE in time slot 0 of frame 1 indicates that the UE can send data in time slot 4 of frame 2, and the K2 value should be 14 time slots.
- the minimum RTT between the gNB and the UE can be used as the fixed TA part and broadcasted through a system message, and the specific TA part can be notified to each UE by the gNB through a Timing Advance Command.
- K2 the specific TA part
- other subcarrier intervals can be deduced by analogy and will not be described again.
- the prior art solution needs to modify the protocol.
- the UE in order to support NTN communication, it is also necessary to implement software and hardware inspection and update in related aspects, and to maintain related variables, which will increase software and hardware maintenance costs.
- an embodiment of the present invention provides a method for determining user equipment parameters.
- the method for determining user equipment parameters includes: determining a minimum round-trip time between each user equipment and a satellite in a cell; and according to the minimum The round-trip time and the frame information of the downlink radio frame on the network side determine the frame information of the uplink radio frame on the network side, and the minimum round-trip time is the time difference between the uplink radio frame on the network side lagging the downlink radio frame on the network side; based on the network side
- the uplink radio frame and the network-side downlink radio frame determine user equipment parameters of each user equipment, and the user equipment parameters include TA and / or K2.
- the minimum round-trip time can be used as the time difference between the network-side uplink radio frame and the network-side downlink radio frame to lag the network-side uplink radio frame, and the network-side uplink radio frame can be obtained, and based on the network-side uplink
- the radio frame determines TA and / or K2, so that the UE can send and receive data based on the network-side uplink radio frame and the network-side downlink radio frame, adjust the long round-trip time in the NTN through the network, and minimize the softness of the UE on the land network.
- the modification of the hardware can effectively prevent the UE from increasing software and hardware maintenance costs, and can support NTN communication.
- FIG. 2 is a schematic flowchart of a method for determining user equipment parameters according to an embodiment of the present invention.
- the network can balance the different transmission delays by adjusting the upload time of each UE, so that the uplink signals of each UE reach the base station synchronously. For example, compared with UEs closer to the base station, the transmission time of UEs farther from the base station is longer, so UEs farther from the base station need to send uplink data in advance.
- the time to send in advance is calculated by the base station and notified to the UE.
- the base station can configure a TA for each UE and send it to the UE, and the UE adjusts the uplink data transmission time according to the TA, thereby achieving time synchronization on the base station side.
- the value range of TA and / or K2 greatly exceeds the value range currently defined.
- an embodiment of the present invention provides a method for determining user equipment parameters. Specifically, the method may include the following steps:
- Step S101 Determine a minimum round-trip time between each user equipment and a satellite in the cell;
- Step S102 Determine frame information of a network-side uplink radio frame according to the minimum round-trip time and frame information of a network-side downlink radio frame, where the minimum round-trip time is that the network-side uplink radio frame is behind the network-side downlink radio frame Time difference;
- Step S103 Determine user equipment parameters of each user equipment based on the network-side uplink radio frame and the network-side downlink radio frame, where the user equipment parameters are TA and / or K2.
- the NTN base station may determine a round-trip time between each UE and a satellite in the cell, and then obtain a minimum round-trip time between the base station and the UE.
- the NTN base station may determine the minimum round-trip time between each UE in the cell and the satellite according to the height of the satellite. For example, the round-trip time of each UE and the satellite is compared to obtain the minimum round-trip time.
- the NTN base station may assume that a UE is located at a land plane position closest to the satellite, and determine the round-trip time between the UE and the satellite as the minimum round-trip time.
- the NTN base station may determine the frame information of the uplink radio frame on the network side according to the obtained minimum round-trip time and the frame information of the downlink radio frame on the network.
- the network does not distinguish between downlink radio frames on the network side and uplink radio frames on the network side, and only uses the radio frames on the network side as a reference for data transmission and reception.
- the base station can determine a network-side downlink radio frame and a network-side uplink radio frame for the network side.
- the frame information of the network-side downlink radio frame and the network-side uplink radio frame may be different.
- the uplink radio frame on the network side lags the downlink radio frame on the network side.
- the uplink and downlink timing of the NTN base station is different, and the frame information of the uplink radio frame on the network side may be determined according to the minimum round-trip time and the frame information of the downlink radio frame on the network side.
- the frame information may include one or more pieces of information such as a frame number, a slot number, index information of a subframe number, and a number of slots included in a radio frame.
- the time difference between the network-side uplink radio frame lagging the network-side downlink radio frame may be the minimum round-trip time. After determining frame information of the network-side downlink radio frame, the minimum round-trip time may be delayed to obtain frame information of the network-side uplink radio frame.
- uplink and downlink radio frames on the network side have different timings.
- the frame number of the downlink radio frame on the network side at this time may be different from the frame number of the uplink radio frame on the network side, and the time slot in the downlink radio frame on the network side The number is also different from the time slot number in the uplink radio frame on the network side.
- the frame number and timeslot number of the network-side uplink radio frame and the network-side downlink radio frame may be different. As shown in Figure 3, taking 15kHz as an example, each frame includes 10 time slots, from time slot 0 to time slot 9 .
- the gNB sends an uplink grant in frame 1 slot 0, instructing the UE to perform uplink transmission in frame 1 slot 3, where K2 is 3 slots, and K2 is determined according to the network-side downlink radio frame and network-side uplink radio frame.
- the timing of the uplink radio frame on the network side is lagging behind the timing of the downlink radio frame.
- the lag time can be the minimum round-trip time or the result obtained by rounding down the time slot.
- the frame number of the network-side uplink radio frame and the network-side downlink radio frame at this moment may be different, and The number of sub-frames is also different from the number of sub-frames in the uplink radio frame on the network side.
- the minimum RTT may be a slot count. Normally, the duration of each time slot is 1 ms. Those skilled in the art understand that the minimum RTT is obtained by rounding down the time slot to determine the uplink radio frame on the network side. Alternatively, the minimum RTT may use a subframe count. Those skilled in the art understand that the minimum RTT is obtained by rounding down a subframe to determine the uplink radio frame on the network side.
- the NTN base station may determine and notify the UE according to a calculation method in the prior art. For simplicity, the detailed calculation process is not described herein again.
- step S103 the timing difference between the uplink and downlink of the NTN base station is transparent to the NTN UE. That is, for the UE, the UE does not need to know that there is a difference in uplink and downlink timing of the NTN base station.
- the NTN base station may use the uplink signal sent by the UE to calculate TA by combining the network-side uplink radio frame and the network-side downlink radio frame.
- the NTN base station may determine the value of the TA by measuring the received random access preamble when the UE performs random access.
- the NTN base station determines the UE, the calculation is based on the uplink radio frame on the network side, that is, when the NTN base station calculates the TA, the minimum round-trip time (that is, the uplink radio frame on the network side lags the downlink radio frame on the network side Time difference).
- the NTN base station can calculate the TA based on the measured random access preamble, and the calculated TA value is relatively small, which can minimize the modification of the existing protocol.
- the steps for determining K2 are similar to the steps for determining TA.
- the NTN base station side may deduct the minimum round-trip time.
- the NTN base station may calculate the value of K2 after subtracting the time difference between the uplink radio frame on the network side and the downlink radio frame on the network side, and the specific calculation process is not described again.
- the NTN base station may send the calculation result (that is, the determined TA) to the UE through a timing advance command (Timing, Advance Command).
- the NTN base station may send the timing advance command field of the random access response to the UE.
- the user equipment parameters TA and / or K2 in the NTN network can be determined for the UE without modifying the UE protocol. Moreover, it is possible to minimize the modification of the related protocols on the UE side and reduce the UE maintenance cost.
- FIG. 4 is a schematic flowchart of a user equipment parameter determining apparatus according to an embodiment of the present invention.
- the user equipment parameter determining apparatus 4 (referred to as determining apparatus 4) may be used to implement the user equipment parameters shown in FIG. 2 and FIG. 3 described above.
- the technical solution of the determination method is applied to the network side, for example, it is performed by an NTN base station (for example, 5G gNB).
- NTN base station for example, 5G gNB
- the determining device 4 may include a first determining module 41, a second determining module 42, and a third determining module 43.
- the first determining module 41 is adapted to determine a minimum round-trip time between each user equipment and a satellite in the cell; and the second determining module 42 is adapted to calculate the minimum round-trip time and the downlink radio on the network side.
- the frame information of the frame determines the frame information of the uplink radio frame on the network side, and the minimum round-trip time is the time difference between the uplink radio frame on the network side and the downlink radio frame on the network side;
- the third determining module 43 is adapted to be based on the The network-side uplink radio frame and the network-side downlink radio frame determine user equipment parameters of each user equipment, and the user equipment parameters are TA and / or K2.
- the first determining module 41 may include a determining sub-module 411.
- the determining sub-module 411 is adapted to determine a minimum round-trip time between each user equipment in the cell and the satellite according to the height of the satellite.
- the minimum round-trip time is counted by time slots, and the minimum round-trip time is obtained by rounding down the time slots; or, the minimum round-trip time is counted by sub-frames, and the minimum round-trip time is calculated by sub-frames. Get the next round.
- the minimum round trip time is transparent to each user equipment.
- the user equipment parameter is TA
- the third determining module 43 may include a receiving sub-module 431 and a first computing sub-module 432.
- the receiving sub-module 431 is adapted to receive an uplink signal sent by each user equipment;
- the first calculation sub-module 432 is adapted to receive the uplink signal, the network-side downlink radio frame, and the network-side uplink according to the uplink signal
- the radio frame calculates the TA of each user equipment.
- the user equipment parameter is K2
- the third determination module 43 may include a second calculation sub-module 433. Specifically, when the second calculation submodule is adapted to perform uplink scheduling for each user equipment, K2 of each user equipment is calculated according to the network-side uplink radio frame and the network-side downlink radio frame.
- an embodiment of the present invention also discloses a storage medium having computer instructions stored thereon.
- the computer instruction executes steps of the method for determining user equipment parameters in the embodiments shown in FIG. 2 and FIG. 3.
- the storage medium may include a computer-readable storage medium such as a non-volatile memory or a non-transitory memory.
- the computer-readable storage medium may include a ROM, a RAM, a magnetic disk, or an optical disk.
- an embodiment of the present invention further discloses a base station, which includes a memory and a processor.
- the memory stores computer instructions capable of running on the processor, and the processor executes the computer instructions when the processor runs the computer instructions.
- the base station may be a satellite base station.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (14)
- 一种用户设备参数的确定方法,其特征在于,包括:确定小区内的各个用户设备与卫星之间的最小往返时间;根据所述最小往返时间和网络侧下行无线帧的帧信息确定网络侧上行无线帧的帧信息,所述最小往返时间为所述网络侧上行无线帧滞后所述网络侧下行无线帧的时间差;基于所述网络侧上行无线帧和所述网络侧下行无线帧确定各个用户设备的用户设备参数,所述用户设备参数为TA和/或K2。
- 根据权利要求1所述的用户设备参数的确定方法,其特征在于,所述确定小区内的各个用户设备与卫星之间的最小往返时间包括:根据所述卫星的高度确定所述小区内的各个用户设备与所述卫星之间的最小往返时间。
- 根据权利要求1或2所述的用户设备参数的确定方法,其特征在于,所述最小往返时间以时隙计数,所述最小往返时间是对时隙向下取整得到的;或者,所述最小往返时间以子帧计数,所述最小往返时间是对子帧向下取整得到的。
- 根据权利要求1或2所述的用户设备参数的确定方法,其特征在于,所述最小往返时间对各个用户设备是透明的。
- 根据权利要求1所述的用户设备参数的确定方法,其特征在于,所述用户设备参数为TA,所述基于所述网络侧上行无线帧和所述网络侧下行无线帧确定各个用户设备的用户设备参数包括:接收各个用户设备发送的上行信号;根据所述上行信号、所述网络侧下行无线帧和所述网络侧上行无线帧计算每一用户设备的TA。
- 根据权利要求1所述的用户设备参数的确定方法,其特征在于,所述用户设备参数为K2,所述基于所述网络侧上行无线帧和所述网络侧下行无线帧确定各个用户设备的用户设备参数包括:对每一用户设备进行上行调度时,根据所述网络侧上行无线帧和所述网络侧下行无线帧计算每一用户设备的K2。
- 一种用户设备参数的确定装置,其特征在于,包括:第一确定模块,适于确定小区内的各个用户设备与卫星之间的最小往返时间;第二确定模块,适于根据所述最小往返时间和网络侧下行无线帧的帧信息确定网络侧上行无线帧的帧信息,所述最小往返时间为所述网络侧上行无线帧滞后所述网络侧下行无线帧的时间差;第三确定模块,适于基于所述网络侧上行无线帧和所述网络侧下行无线帧确定各个用户设备的用户设备参数,所述用户设备参数为TA和/或K2。
- 根据权利要求7所述的用户设备参数的确定装置,其特征在于,所述第一确定模块包括:确定子模块,适于根据所述卫星的高度确定所述小区内的各个用户设备与所述卫星之间的最小往返时间。
- 根据权利要求7或8所述的用户设备参数的确定装置,其特征在于,所述最小往返时间以时隙计数,所述最小往返时间是对时隙向下取整得到的;或者,所述最小往返时间以子帧计数,所述最小往返时间是对子帧向下取整得到的。
- 根据权利要求7或8所述的用户设备参数的确定装置,其特征在于,所述最小往返时间对各个用户设备是透明的。
- 根据权利要求7所述的用户设备参数的确定装置,其特征在于,所述用户设备参数为TA,所述第三确定模块包括:接收子模块,适于接收各个用户设备发送的上行信号;第一计算子模块,适于根据所述上行信号、所述网络侧上行无线帧和所述网络侧下行无线帧计算每一用户设备的TA。
- 根据权利要求7所述的用户设备参数的确定装置,其特征在于,所述用户设备参数为K2,所述第三确定模块包括:第二计算子模块,适于对每一用户设备进行上行调度时,根据所述网络侧上行无线帧和所述网络侧下行无线帧计算每一用户设备的K2。
- 一种存储介质,其上存储有计算机指令,其特征在于,所述计算机指令运行时执行权利要求1至6任一项所述的用户设备参数的确定方法的步骤。
- 一种基站,包括存储器和处理器,所述存储器上存储有可在所述处理器上运行的计算机指令,其特征在于,所述处理器运行所述计算机指令时执行权利要求1至6中任一项所述的用户设备参数的确定方法的步骤。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020217008415A KR102484964B1 (ko) | 2018-08-31 | 2019-07-18 | 사용자 기기 파라미터 결정 방법 및 장치, 및 저장 매체 및 기지국 |
EP19854728.3A EP3846552A4 (en) | 2018-08-31 | 2019-07-18 | METHOD AND DEVICE FOR DETERMINING THE PARAMETERS OF USER EQUIPMENT, STORAGE MEDIUM AND BASE STATION |
JP2021510777A JP7410133B2 (ja) | 2018-08-31 | 2019-07-18 | ユーザ機器パラメータ決定のための方法および装置、および記録媒体および基地局 |
US17/271,867 US11909505B2 (en) | 2018-08-31 | 2019-07-18 | User equipment parameter determination method and apparatus, and storage medium and base station |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811012648.5A CN110876188B (zh) | 2018-08-31 | 2018-08-31 | 用户设备参数的确定方法及装置、存储介质、基站 |
CN201811012648.5 | 2018-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020042808A1 true WO2020042808A1 (zh) | 2020-03-05 |
Family
ID=69644690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2019/096463 WO2020042808A1 (zh) | 2018-08-31 | 2019-07-18 | 用户设备参数的确定方法及装置、存储介质、基站 |
Country Status (6)
Country | Link |
---|---|
US (1) | US11909505B2 (zh) |
EP (1) | EP3846552A4 (zh) |
JP (1) | JP7410133B2 (zh) |
KR (1) | KR102484964B1 (zh) |
CN (1) | CN110876188B (zh) |
WO (1) | WO2020042808A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022091552A1 (ja) * | 2020-10-26 | 2022-05-05 | 株式会社Nttドコモ | 端末、基地局及び通信方法 |
US20220304062A1 (en) * | 2020-08-05 | 2022-09-22 | Apple Inc. | Resolution of Mismatch in Calculation of Random Access Radio Network Temporary Identifier |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3751908B1 (en) | 2019-06-14 | 2022-02-16 | Ofinno, LLC | Non-access stratum connection handling in ntn |
CN116234021A (zh) * | 2020-06-19 | 2023-06-06 | Oppo广东移动通信有限公司 | 无线通信方法、终端设备和网络设备 |
CN114270727B (zh) * | 2020-07-16 | 2024-02-09 | 北京小米移动软件有限公司 | 定时提前量指示、上行信号发送方法和装置 |
JP2023537064A (ja) * | 2020-08-07 | 2023-08-30 | アップル インコーポレイテッド | 非地上波ネットワークに対する時間ギャップオフセットの適用 |
EP4201117A4 (en) * | 2020-08-21 | 2024-05-22 | Lenovo (Beijing) Limited | DELAY INDICATION METHOD AND APPARATUS |
CN112314019B (zh) * | 2020-09-25 | 2023-09-19 | 北京小米移动软件有限公司 | 传输时延补偿方法、装置、通信设备和存储介质 |
CN113079559B (zh) * | 2021-03-31 | 2022-02-18 | 中国科学院上海微系统与信息技术研究所 | 一种中低轨卫星联合组网的星间链路功率分配方法 |
WO2022226803A1 (zh) * | 2021-04-27 | 2022-11-03 | 北京小米移动软件有限公司 | 上行定时调整方法、装置及存储介质 |
DE102022210364A1 (de) | 2022-09-29 | 2024-04-04 | Continental Automotive Technologies GmbH | Verfahren und drahtloses Kommunikationssystem zur Verbesserung einer energieeffizienten Abdeckung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102088763A (zh) * | 2010-08-11 | 2011-06-08 | 电信科学技术研究院 | 中继定时调整方法、系统和设备 |
CN103313380A (zh) * | 2012-03-16 | 2013-09-18 | 北京三星通信技术研究有限公司 | 上行调度的方法及设备 |
CN103702408A (zh) * | 2012-09-27 | 2014-04-02 | 上海贝尔股份有限公司 | 上行同步的方法和装置 |
US20160094315A1 (en) * | 2014-09-29 | 2016-03-31 | Electronics And Telecommunications Research Institute | Method and apparatus for transmitting and receiving physical channel and signal |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2347828B (en) | 1999-03-05 | 2004-05-19 | Internat Mobile Satellite Orga | Communication methods and apparatus |
JP2000269786A (ja) * | 1999-03-16 | 2000-09-29 | Sony Corp | 放送受信機 |
EP1261227A1 (en) | 2001-05-21 | 2002-11-27 | Motorola, Inc. | Method and apparatus for increased information transfer in a communication system |
US7574224B2 (en) | 2005-06-13 | 2009-08-11 | Qualcomm Incorporated | Methods and apparatus for performing timing synchronization with base stations |
CN102217352B (zh) | 2008-11-18 | 2016-04-20 | 诺基亚技术有限公司 | 在通信系统中进行中继 |
US8717972B2 (en) * | 2009-10-29 | 2014-05-06 | Alcatel Lucent | Method for range extension in wireless communication systems |
US9276722B2 (en) * | 2010-05-05 | 2016-03-01 | Qualcomm Incorporated | Expanded search space for R-PDCCH in LTE-A |
US9602990B2 (en) * | 2011-04-11 | 2017-03-21 | Qualcomm Incorporated | Method for providing network-based measurements for user equipment-based positioning |
MX2013012566A (es) * | 2011-05-02 | 2013-11-21 | Ericsson Telefon Ab L M | Metodo y aparato para prohibir la transmision de señales de referencia de sondeo en celdas secundarias recien activadas en un sistema de comunicacion inalambrico. |
CN103379435B (zh) * | 2012-04-28 | 2017-02-08 | 电信科学技术研究院 | 一种基于卫星移动通信系统的广播信息传输方法和设备 |
CN103346829B (zh) * | 2013-07-01 | 2016-04-20 | 北京大学 | 兼容lte模式卫星通信初始随机接入两步时延测量方法 |
US9479298B2 (en) * | 2013-07-08 | 2016-10-25 | Intel IP Corporation | Demodulation reference signals (DMRS)for side information for interference cancellation |
US20160028533A1 (en) * | 2014-02-03 | 2016-01-28 | Telefonaktiebolaget L M Ericsson (Publ) | Adaptive uplink-downlink switching time for half duplex operation |
US9332466B2 (en) | 2014-03-20 | 2016-05-03 | Qualcomm Incorporated | Uplink timing advance adjustment |
US9900856B2 (en) | 2015-03-20 | 2018-02-20 | Qualcomm Incorporated | Method and apparatus for time or frequency synchronization in non-geosynchronous satellite communication systems |
AU2016347539B2 (en) | 2015-10-30 | 2021-05-06 | Paris Michaels | Mobile satellite communication system |
JP6753205B2 (ja) | 2016-08-10 | 2020-09-09 | ソニー株式会社 | 通信装置、通信方法及び記録媒体 |
US10405332B2 (en) * | 2016-09-06 | 2019-09-03 | Samsung Electronics Co., Ltd. | Coexistence of different radio access technologies or services on a same carrier |
KR102567727B1 (ko) * | 2016-10-19 | 2023-08-18 | 아이피엘에이 홀딩스 인크. | 장치 |
US10299266B2 (en) * | 2017-03-20 | 2019-05-21 | Honeywell International Inc. | Delay calculation in wireless systems |
CN107197517B (zh) * | 2017-08-02 | 2020-11-06 | 电子科技大学 | 基于ta分组的lte卫星上行链路同步方法 |
US10375669B2 (en) * | 2017-08-04 | 2019-08-06 | Qualcomm Incorporated | Methods and systems for locating a mobile device using an asynchronous wireless network |
KR102257144B1 (ko) * | 2017-08-11 | 2021-05-26 | 에프쥐 이노베이션 컴퍼니 리미티드 | 새로운 무선에서의 불연속적 수신을 위한 디바이스들 및 방법들 |
US10863547B2 (en) * | 2017-11-09 | 2020-12-08 | Qualcomm Incorporated | Adapting timing advance for multiple RACH transmission in backhaul networks |
US11832205B2 (en) * | 2017-11-21 | 2023-11-28 | Qualcomm Incorporated | Open loop uplink timing advance |
US11019583B2 (en) * | 2018-05-04 | 2021-05-25 | Nokia Technologies Oy | Method for network-assisted uplink time advance for extreme range support |
CA3108644A1 (en) | 2018-08-10 | 2020-02-13 | Telefonaktiebolaget Lm Ericsson (Publ) | Systems and methods for uplink transmission timing |
US11277854B2 (en) * | 2019-01-22 | 2022-03-15 | T-Mobile Usa, Inc. | Systems and methods to enhance spectrum efficiency and to reduce latency by using dynamic guard time selection in wireless systems |
US12010659B2 (en) * | 2019-08-30 | 2024-06-11 | Qualcomm Incorporated | Techniques for a radio access network entity to adjust timing in wireless networks |
US11950212B2 (en) * | 2019-12-12 | 2024-04-02 | Qualcomm Incorporated | Timing advance signaling for multi-transmit receive point operation |
US11671932B2 (en) * | 2020-01-20 | 2023-06-06 | Qualcomm Incorporated | Timing adjust for a non-terrestrial network |
US11690054B2 (en) * | 2020-01-22 | 2023-06-27 | Qualcomm Incorporated | Gap enhancements in wireless networks |
US11937193B2 (en) * | 2020-04-01 | 2024-03-19 | Qualcomm Incorporated | Timing improvements for wireless communications systems |
US20210314892A1 (en) * | 2020-04-01 | 2021-10-07 | Qualcomm Incorporated | Data channel timelines in wireless communications systems |
US20230292371A1 (en) * | 2020-08-06 | 2023-09-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Rar window definition in ntn |
WO2022152181A1 (en) * | 2021-01-15 | 2022-07-21 | FG Innovation Company Limited | Method of channel scheduling for narrowband internet of things in non-terrestrial network and user equipment using the same |
-
2018
- 2018-08-31 CN CN201811012648.5A patent/CN110876188B/zh active Active
-
2019
- 2019-07-18 US US17/271,867 patent/US11909505B2/en active Active
- 2019-07-18 EP EP19854728.3A patent/EP3846552A4/en active Pending
- 2019-07-18 JP JP2021510777A patent/JP7410133B2/ja active Active
- 2019-07-18 WO PCT/CN2019/096463 patent/WO2020042808A1/zh unknown
- 2019-07-18 KR KR1020217008415A patent/KR102484964B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102088763A (zh) * | 2010-08-11 | 2011-06-08 | 电信科学技术研究院 | 中继定时调整方法、系统和设备 |
CN103313380A (zh) * | 2012-03-16 | 2013-09-18 | 北京三星通信技术研究有限公司 | 上行调度的方法及设备 |
CN103702408A (zh) * | 2012-09-27 | 2014-04-02 | 上海贝尔股份有限公司 | 上行同步的方法和装置 |
US20160094315A1 (en) * | 2014-09-29 | 2016-03-31 | Electronics And Telecommunications Research Institute | Method and apparatus for transmitting and receiving physical channel and signal |
Non-Patent Citations (2)
Title |
---|
See also references of EP3846552A4 * |
SPREADTRUM COMMUNICATIONS: "Impacts Caused by Measurement Variations in NTN", 3GPP TSG-RAN WG2 MEETING #106, R2-1905688/R2-1903797, 17 May 2019 (2019-05-17), XP051710043 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220304062A1 (en) * | 2020-08-05 | 2022-09-22 | Apple Inc. | Resolution of Mismatch in Calculation of Random Access Radio Network Temporary Identifier |
WO2022091552A1 (ja) * | 2020-10-26 | 2022-05-05 | 株式会社Nttドコモ | 端末、基地局及び通信方法 |
Also Published As
Publication number | Publication date |
---|---|
KR102484964B1 (ko) | 2023-01-04 |
JP7410133B2 (ja) | 2024-01-09 |
US20210194572A1 (en) | 2021-06-24 |
EP3846552A1 (en) | 2021-07-07 |
KR20210047906A (ko) | 2021-04-30 |
JP2021536691A (ja) | 2021-12-27 |
EP3846552A4 (en) | 2022-05-18 |
CN110876188B (zh) | 2020-09-01 |
US11909505B2 (en) | 2024-02-20 |
CN110876188A (zh) | 2020-03-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2020042808A1 (zh) | 用户设备参数的确定方法及装置、存储介质、基站 | |
CN107197517B (zh) | 基于ta分组的lte卫星上行链路同步方法 | |
US11792758B2 (en) | Method and device for determining timing advance | |
CN107528628B (zh) | 卫星通信系统的信号同步方法、装置和系统 | |
CN109792417B (zh) | 高速lte部署的频率调整 | |
US20210143901A1 (en) | Timing advance for satellite-based communications using a satellite with enhanced processing capabilities | |
US20230397247A1 (en) | Random access procedure in a non-terrestrial network | |
US8538327B2 (en) | User equipment adjustment of uplink satellite communications | |
US11140641B2 (en) | Cellular vehicle-to-everything out of coverage synchronization | |
WO2020042809A1 (zh) | Ro的指示、确定方法及装置、存储介质、基站、终端 | |
US20230388007A1 (en) | Uplink Timing Maintenance for Communication Paths Including Multiple Legs Involving a Relay Entity | |
US20230362857A1 (en) | Timing and frequency adjustments in non-terrestrial networks | |
CN114557088A (zh) | 信息指示方法、装置、设备、系统及存储介质 | |
WO2022056854A1 (zh) | 无线通信方法和设备 | |
EP3002978B1 (en) | Method for remote coverage and base station | |
WO2022027230A1 (en) | Method and apparatus for timing advance compensation | |
WO2021232434A1 (zh) | 基于随机接入流程的波束链路恢复方法、装置和设备 | |
WO2022205002A1 (zh) | 传输定时的调整方法、确定方法和终端设备 | |
US11737042B2 (en) | Method and apparatus for UE TA reporting in a wireless communication system | |
CN116319189B (zh) | 用于无线通信的方法及装置 | |
CN117203924A (zh) | 无线通信的方法、终端设备和网络设备 | |
EP4190072A1 (en) | Method and apparatus for determining drx rtt timer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19854728 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2021510777 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20217008415 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2019854728 Country of ref document: EP Effective date: 20210331 |