WO2021179135A1 - Procédé de transmission de données, dispositif terminal et dispositif de réseau - Google Patents

Procédé de transmission de données, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2021179135A1
WO2021179135A1 PCT/CN2020/078466 CN2020078466W WO2021179135A1 WO 2021179135 A1 WO2021179135 A1 WO 2021179135A1 CN 2020078466 W CN2020078466 W CN 2020078466W WO 2021179135 A1 WO2021179135 A1 WO 2021179135A1
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WIPO (PCT)
Prior art keywords
mcs level
mcs
measurement result
terminal device
serving cell
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PCT/CN2020/078466
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English (en)
Chinese (zh)
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WO2021179135A9 (fr
Inventor
李海涛
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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 PCT/CN2020/078466 priority Critical patent/WO2021179135A1/fr
Priority to CN202080094223.2A priority patent/CN114982323A/zh
Publication of WO2021179135A1 publication Critical patent/WO2021179135A1/fr
Publication of WO2021179135A9 publication Critical patent/WO2021179135A9/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • the present invention relates to the field of communications, and in particular to a data transmission method, terminal equipment, network equipment, chips, computer-readable storage media, computer program products, and computer programs.
  • the signal propagation delay between the terminal equipment and the satellite in the Non-Terrestrial Network has increased significantly.
  • the large propagation delay will introduce a large scheduling delay for scheduling transmission, and as a result, the network equipment may use an inappropriate MCS level to schedule the uplink transmission of the terminal equipment.
  • how to control the uplink transmission of the terminal equipment to avoid the decrease in transmission efficiency or the failure of the uplink transmission reception becomes a problem that needs to be solved.
  • embodiments of the present invention provide a data transmission method, terminal equipment, network equipment, chip, computer-readable storage medium, computer program product, and computer program.
  • a data transmission method including:
  • the terminal equipment controls the uplink transmission; wherein the method for controlling the uplink transmission includes: using the first modulation and decoding scheme MCS level for uplink transmission, or not performing uplink transmission;
  • the first MCS level is determined according to at least one of the following:
  • M is an integer greater than or equal to 1.
  • a data transmission method including:
  • the network device receives the uplink transmission that uses the first modulation and decoding scheme MCS level transmission;
  • the first MCS level is an MCS level determined according to at least one of the following: measurement related information of the serving cell of the terminal device, and/or M available MCS levels indicated by the first downlink channel; M is An integer greater than or equal to 1.
  • a terminal device including:
  • the first communication unit performs uplink transmission
  • the first processing unit controls the uplink transmission; wherein the method for controlling the uplink transmission includes: using the first modulation and decoding scheme MCS level for uplink transmission, or not performing uplink transmission;
  • the first MCS level is determined according to at least one of the following: measurement related information of the serving cell, and/or M available MCS levels indicated by the first downlink channel; M is an integer greater than or equal to 1.
  • a network device including:
  • the second communication unit receives the uplink transmission that uses the first modulation and decoding scheme MCS level transmission;
  • the first MCS level is an MCS level determined according to at least one of the following: measurement related information of the serving cell of the terminal device, and/or M available MCS levels indicated by the first downlink channel; M is An integer greater than or equal to 1.
  • a terminal device including: a processor and a memory for storing a computer program that can run on the processor,
  • 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 steps of the aforementioned method.
  • a network device including: a processor and a memory for storing a computer program that can run on the processor,
  • 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 steps of the aforementioned method.
  • a chip including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the aforementioned method.
  • a computer-readable storage medium is provided, and the computer-readable storage medium is used to store a computer program that enables a computer to execute the steps of the aforementioned method.
  • a computer program product including computer program instructions, which cause a computer to execute the aforementioned method.
  • a computer program which causes a computer to execute the method as described above.
  • the most appropriate MCS level is selected according to the measurement results of different serving cells of the terminal device, and then the first MCS level is used for uplink transmission, or the uplink transmission is not performed.
  • the uplink transmission of the terminal equipment can be accurately controlled, and the most suitable MCS level can be determined in combination with the measurement related information of the serving cell, thereby avoiding the problems of the decrease of transmission efficiency and the failure of uplink transmission reception.
  • FIG. 1 is a schematic diagram 1 of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a first schematic flowchart of a data transmission method provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of the second flow of a data transmission method provided by an embodiment of the present application.
  • FIG. 4 is a third schematic flowchart of a data transmission method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram 1 of a processing scenario provided by an embodiment of the present application.
  • FIG. 6 is a fourth flowchart of a data transmission method provided by an embodiment of the present application.
  • FIG. 7 is a second schematic diagram of a processing scenario provided by an embodiment of the present application.
  • FIG. 8 is a fifth schematic flowchart of a data transmission method provided by an embodiment of the present application.
  • FIG. 9 is a third schematic diagram of a processing scenario provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of the composition structure of a network device provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of the composition structure of a communication device provided by an embodiment of the present invention.
  • FIG. 13 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram 2 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 in the embodiment of the present application may be as shown in FIG. 1.
  • 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 referred to as a communication terminal device or a terminal device).
  • 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 can 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
  • Evolutional Node B, eNB or eNodeB LTE system Type network equipment
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, In-vehicle devices,
  • the communication system 100 further includes at least one UE 120 located within the coverage area of the network device 110.
  • UE as used herein 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 device", a “wireless terminal device” or a "mobile terminal device”.
  • the embodiment of the present invention provides a data transmission method, as shown in FIG. 2, including:
  • Step 21 The terminal device controls the uplink transmission; wherein, the method of controlling the uplink transmission includes: using the first Modulation and Coding Scheme (MCS, Modulation and Coding Scheme) level for uplink transmission, or not performing uplink transmission;
  • MCS Modulation and Coding Scheme
  • the first MCS level is determined according to at least one of the following: measurement related information of the serving cell of the terminal device, and/or M available MCS levels indicated by the first downlink channel; M is greater than An integer equal to 1.
  • the embodiment of the present invention also provides a data transmission method for the network device, as shown in FIG. 3, which includes:
  • Step 31 The network device receives the uplink transmission using the first modulation and decoding scheme MCS level transmission;
  • the first MCS level is an MCS level determined according to at least one of the following: measurement related information of the serving cell of the terminal device, and/or the M number of information indicated for the terminal device by the network device through the first downlink channel Available MCS level; M is an integer greater than or equal to 1.
  • the network device may be a satellite in an NTN scenario.
  • Non Terrestrial Network non-terrestrial communication network
  • the NTN uses satellite communication to provide communication services to ground users.
  • satellite communication Compared with terrestrial cellular network communication, satellite communication has many unique advantages. First of all, satellite communication is not restricted by the user area. For example, general terrestrial communication cannot cover the ocean, mountains, deserts and other areas where network equipment cannot be installed or because of the sparse population. Satellites can cover a larger ground, and satellites can orbit the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has greater social value.
  • Satellite communication can be covered at a lower cost in remote mountainous areas, poor and backward countries or regions, so that people in these areas can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed areas and promoting The development of these areas.
  • the satellite communication distance is long, and the communication cost has not increased significantly with the increase of the communication distance; finally, the stability of satellite communication is high, and it is not restricted by natural disasters.
  • LEO Low-Earth Orbit
  • MEO Medium-Earth Orbit
  • GEO Global-Earth Orbit, geosynchronous orbit
  • HEO High Elliptical Orbit (highly elliptical orbit) satellites and so on.
  • the altitude range of low-orbit satellites is 500km-1500km, and the corresponding orbital period is about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between users is generally less than 20ms.
  • the maximum satellite viewing time is 20 minutes.
  • the signal propagation distance is short, the link loss is small, and the requirement for the transmission power of the user terminal is not high.
  • GEO is a geosynchronous orbit satellite with an orbital height of 35786km and a rotation period of 24 hours around the earth.
  • the signal propagation delay of single-hop communication between users is generally 250ms.
  • satellites In order to ensure the coverage of satellites and increase the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground.
  • a satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. Ground area.
  • the solution provided in this embodiment is particularly suitable for dynamic scheduling (Dynamic Grant) uplink transmission.
  • the description of dynamic scheduling of uplink transmission is as follows: network equipment (for example, satellite or base station) based on the BSR (Buffer Status Report) reported by terminal equipment )
  • BSR Buffer Status Report
  • the information can learn the data transmission requirements of the terminal equipment, and the channel quality of the terminal equipment can be estimated through SRS (Sounding Reference Signal) measurement.
  • SRS Sounding Reference Signal
  • the CSI downlink reported by the terminal equipment can be used. Measurement) can also estimate the uplink channel quality of the terminal equipment.
  • the base station dynamically schedules uplink transmission through the PDCCH, and indicates information such as a UL grant (uplink grant) resource and an MCS level parameter used by the terminal equipment in the PDCCH.
  • the terminal device uses the indicated MCS parameters to transmit the MAC PDU generated by the MAC layer through the indicated UL grant.
  • the signal propagation delay between the terminal equipment and the satellite in NTN has increased significantly. Large propagation delay will introduce a large scheduling delay for scheduling transmission. The result is that the CSI information reported by the terminal device or the channel quality estimated by the network based on the previous SRS transmission of the terminal device may no longer be accurate during network scheduling. , Will cause the network to use inappropriate MCS levels to schedule the uplink transmission of the terminal equipment.
  • the relative speed of the satellite relative to the ground is very fast, which causes the signal propagation delay to vary greatly. Different propagation delay means that the channel quality also varies greatly.
  • the network If the network always uses the lowest MCS level to schedule uplink transmission, it will not cause a transmission failure, but it will cause a decrease in transmission efficiency. If the network uses a higher MCS level to schedule the uplink transmission, it will cause the uplink transmission reception to fail, and further retransmissions need to be scheduled. This will also cause waste of resources and larger service transmission delays, and reduce user experience.
  • the measurement related information of the serving cell includes: the current measurement result of the serving cell.
  • the solution provided in this example determines the second MCS level according to the current measurement result of the serving cell and the corresponding relationship between the quantization interval of the measurement result and the MCS level; and then according to the second MCS level and the M available MCS Level, determine to perform uplink transmission, or determine to use the first MCS level for uplink transmission.
  • Step 41 The terminal device receives the configuration information sent by the network device.
  • the network device sends configuration information to the terminal device.
  • the configuration information can be carried by radio resource control (RRC, Radio Resource Control) signaling, or by medium access control (MAC, Medium Access Control) control element (CE, Control Element), or by physical downlink control channel ( PDCCH, Physical Downlink Control Channel, or carried by the Physical Downlink Shared Channel (PDSCH, Physical Downlink Share Channel), etc., which are not exhaustive here.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • CE Medium Access Control element
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • the terminal device may also determine the configuration information according to the protocol, or the terminal device may also use The configuration information is determined in an implicit way, and this example does not exhaustively. That is to say, step 41 in FIG. 4 in this example is an optional step. Regardless of whether step 41 is executed or not, as long as the terminal device side can finally obtain the relevant content in the configuration information.
  • the configuration information may specifically include at least one of the following:
  • N MCS levels (or N sets of MCS level parameters can be considered), N is an integer greater than or equal to 1.
  • K-1 serving cell measurement result thresholds are used to determine K serving cell measurement result intervals; the K-1 measurement result thresholds may not be configured by the network device , Can be preset or determined by the terminal device.
  • obtaining K-1 measurement result thresholds may be: preset, for example, it may be preset according to the protocol, that is, the K-1 measurement result thresholds are preset on both the terminal device and the network device side; Or, it can be determined by the terminal device itself.
  • K-1 measurement result thresholds which may include at least one of the following: at least one threshold for signal quality measurement results, and/or at least one quantization threshold for TA value, and/or, for distance At least one threshold value.
  • the measurement result quantization interval can be K
  • the MCS level can be N. That is to say, the corresponding relationship between the measurement result quantization interval and the MCS level can be understood as: K measurement result quantization regions and N MCS levels Correspondence between.
  • the K measurement result quantization intervals are determined according to the K-1 measurement result thresholds.
  • the channel quality interval is used to characterize the channel quality at the time when the currently dynamically scheduled uplink resource is sent on the terminal device side.
  • the currently dynamically scheduled uplink resource may be a physical uplink shared channel (PUSCH, Physical Uplink Share Channel).
  • the measurement result quantification interval may include one of the following:
  • Timing advance (TA, Timing Advanced) value quantization interval
  • the quantization interval of the distance between the terminal device and the network device is the quantization interval of the distance between the terminal device and the network device.
  • the quantification interval of the measurement result can be one of the above three types, or a combination of two or three of the above three types.
  • the corresponding relationship between the quantization interval of the measurement result and the MCS level is configured by the network device, or, preset, or determined by the terminal device.
  • the configuration information sent by the network device to the terminal device includes the correspondence between the measurement result quantization interval and the MCS level.
  • the corresponding relationship between the quantization interval of the measurement result and the MCS level may be preset, which may be understood as preset according to an agreement.
  • the corresponding relationship between the quantization interval of the measurement result and the MCS level can also be determined by the terminal device.
  • the terminal device can be implicitly determined, that is, the terminal device can obtain the corresponding N MCS levels.
  • K-1 measurement result quantization interval thresholds can also be obtained; the terminal device can set the corresponding relationship between the measurement result quantification interval and MCS level according to at least one of the following rules:
  • K may be equal to N. In other words, there can be a one-to-one correspondence between K quantization intervals of measurement results and N MCS levels;
  • K may not be equal to N, that is, the quantization interval of K measurement results and N MCS levels may be corresponding, that is, K may not be equal to N; for example, there are 3 measurement results
  • the quantization interval has 2 MCS levels. Among them, the measurement result quantization interval 1 and 2 correspond to MCS level 1, and the measurement result quantization interval 3 corresponds to MCS level 3.
  • the configuration information in this example can also include other content, such as CS-RNTI, the number of uplink HARQ processes reserved for CG, CG resource period, etc., time-frequency resources, etc., which are not exhaustively listed here, nor are they treated as a countermeasure. Limitation of configuration information.
  • the serving cell measurement result interval is used for the current serving cell measurement result of the terminal device.
  • Step 42 The terminal equipment measures the serving cell.
  • the current measurement result of the serving cell includes at least one of the following:
  • the current distance between the terminal device and the network device corresponding to the serving cell is the current distance between the terminal device and the network device corresponding to the serving cell.
  • the signal quality measurement result may include at least one of the following:
  • CSI Channel state information
  • reference signal received power RSRP, Reference Signal Receiving Power
  • received signal strength indicator RSSI, Received Signal Strength Indicator
  • reference signal received quality RSSI, Reference Signal Receiving Quality
  • SINR Signal to Interference and Noise Ratio
  • the method for acquiring the current TA value may include: the terminal device determines the latest TA value according to its own position information and ephemeris information, or it is called the current TA value.
  • the method for acquiring the current distance between the terminal device and the network device corresponding to the serving cell may be: the terminal device can determine its own location information, and then determine the current location of the network device based on the ephemeris information, and determine the location based on both The current distance between the terminal device and the network device.
  • the location information of the terminal device may be geographic location information corresponding to the current location of the terminal device, such as latitude and longitude (which may further include altitude), etc., or may be a cell identity corresponding to the location of the terminal, etc., which is not correct in this embodiment It is exhaustive.
  • the terminal device may obtain the location information through a GPS unit installed by itself, or may be sent by a network device for it. Of course, there are other ways, which are not exhaustively listed in this embodiment.
  • the terminal device needs to have a positioning capability.
  • Step 43 The terminal device receives M available MCS levels indicated by the first downlink channel.
  • the network device indicates M available MCS levels for the terminal device through the first downlink information.
  • the first downlink channel may be: a physical downlink control channel (PDCCH, Physical Downlink Control CHannel) for dynamically scheduling uplink transmission.
  • PDCH Physical Downlink Control CHannel
  • the M available MCS indicated by the first downlink channel are included in the N MCS levels included in the configuration information in step 41;
  • the N MCS levels include at least the M available MCS levels indicated by the first downlink channel.
  • the manner of indicating the M available MCS levels in the first downlink channel may be: indicating only the indexes (Index) of the M MCS levels, or indicating through a bitmap (bitmap).
  • the indication method through the index of the MCS level may be: when configuring the N MCS level parameters, configure a corresponding index for each MCS level, and further, when the first downlink channel is indicated, only M is required to be carried.
  • the index corresponding to the available MCS level is sufficient.
  • different bits in the bitmap can correspond to different MCS levels in the N MCS levels; if the bit is set to the first value, it means that the MCS level corresponding to the bit is M If one of the available MCS levels is set to a second value, it means that the corresponding MCS level is not one of the M available MCS levels.
  • the first value can be 1, and the second value can be 0, or vice versa.
  • Step 44 The terminal device controls the uplink transmission; wherein the method for controlling the uplink transmission includes: using the first modulation and decoding scheme MCS level for uplink transmission, or not performing uplink transmission.
  • the terminal device determines the second MCS level according to the current measurement result of the serving cell and the corresponding relationship between the quantization interval of the measurement result and the MCS level.
  • the serving cell measurement results include multiple content, such as the current TA value and signal quality Measurement result
  • the MCS level A can be obtained;
  • the MCS level B Based on the signal quality measurement result and the mapping relationship (or corresponding relationship) from the corresponding measurement result interval to the MCS level, the MCS level B can be obtained.
  • the MCS with the lowest level can be selected as the second MCS; if the two are the same, then one of them can be selected as the second MCS level.
  • the mapping relationship (or corresponding relationship) between the measurement result interval and the MCS level three MCS levels are obtained; if there are two of the same MCS levels, then the two The same MCS level is regarded as the second MCS level; if the three MCS levels are not the same, the lowest MCS level is selected as the second MCS level.
  • the method to control the uplink transmission is determined, including:
  • the second MCS level is not lower than the lowest MCS level among the M available MCS levels, determine the first MCS level based on the second MCS level, and use the first MCS level for uplink transmission;
  • the second MCS level is not among the M available MCS levels and the second MCS level is lower than the lowest MCS level among the M available MCS levels, it is determined not to perform the uplink transmission.
  • the first MCS level is further determined according to the second MCS level, and then the first MCS level is used for uplink transmission.
  • the second MCS level is not included in the M available MCS levels and is lower than the lowest MCS level among the M available MCS levels, then it can be determined not to perform this uplink transmission (or, determine to ignore skip this time). Upstream transmission).
  • the determining the first MCS level based on the second MCS level includes:
  • M available MCS levels include the second MCS level, use the second MCS level as the first MCS level;
  • the M available MCS levels The highest MCS level among the levels is taken as the first MCS level.
  • the second MCS level is included in the M available MCS levels, then the second MCS is directly used as the first MCS level for this uplink transmission;
  • the M available MCS levels The level is the MCS level available to the terminal equipment for the network equipment. Therefore, the second MCS level is not used for subsequent transmission, but the highest MCS level among the M available MCS levels is directly used as the first MCS level for this uplink transmission.
  • the terminal device uses the MCS level to perform data on the uplink resource transmission;
  • the terminal device can use the highest MCS of the M available MCS levels indicated by the PDCCH for data transmission;
  • the terminal device If the second MCS level selected by the terminal device is lower than the lowest MCS of the M available MCS levels indicated by the PDCCH, the terminal device skips this uplink transmission.
  • the network configures the correspondence between multiple MCS levels and multiple channel quality parameters.
  • the base station indicates multiple available MCS parameters.
  • the UE decides which MCS level to use for uplink transmission according to the current channel quality. If the MCS parameters are not met, if the MCS selected by the UE is higher than the highest MCS indicated by the PDCCH, the UE can use the highest MCS indicated by the PDCCH for data transmission; if the MCS selected by the UE is lower than the lowest MCS indicated by the PDCCH, the UE will skip this time Uplink transmission.
  • the terminal device Before the first uplink transmission, the terminal device receives the network device through the first downlink channel (that is, the PDCCH indicating the uplink scheduling) indicating that the M available MCS levels this time are MCS2 and MCS3; in T1-send (send ) Time, according to the corresponding relationship, select MCS3 according to the TA value corresponding to that time, correspondingly, the network equipment (satellite, which can be called gNB in the figure) receives the information transmitted on PUSCH using MCS3 at T1-receive (receive) time .
  • the network equipment as gNB in the figure
  • M available MCS levels in this uplink transmission.
  • the M available MCS levels corresponding to different times are different (including There are different numbers M, and/or different MCS levels, etc.); of course, it is also possible that if the M MCS levels available for this uplink transmission and the previous uplink transmission are the same, it is possible that the network equipment does not need to indicate every time, then the terminal The device can use the M available MCS levels received and saved the previous time to perform this processing by default; of course, it can also give instructions every time.
  • the terminal device receives that the network device indicates through the first downlink channel (that is, the PDCCH indicating uplink scheduling) that the M available MCS levels this time are MCS2 and MCS3;
  • the TA value at T2-send and T1-send is different.
  • This TA value corresponds to MCS1, but MCS1 is not within the M available MCS levels (MCS2, MCS3) indicated this time, but MCS1 is greater than MCS2, so
  • the highest MCS level among the M available MCS levels, that is, MCS2 can be used as the first MCS level for uplink transmission, which will not be repeated here;
  • the terminal device Before the third uplink transmission, the terminal device received that the network device indicated through the first downlink channel (that is, the PDCCH that indicates uplink scheduling) that the M available MCS levels this time are MCS3 and MCS4; TA changes at T3-send , MCS5 is selected according to the TA value corresponding to the time T3-send, but MCS5 is no longer among the M available MCS levels indicated this time, and is lower than the lowest MCS level (MCS4), so based on the solution provided in this example, determine Do not perform this uplink transmission, that is, skip this uplink transmission.
  • MCS4 lowest MCS level
  • selecting the most appropriate MCS level among the indicated multiple available MCS levels according to different channel qualities can maximize the use of channel quality to transmit as much data as possible.
  • the terminal device only needs to select the MCS level based on the current channel quality, and the solution is simple and easy to implement.
  • the first downlink channel indicates a limited number of available MCS levels, which is beneficial to network implementation.
  • the network side only needs to blindly check the limited number of MCS levels on the uplink resources.
  • the measurement-related information of the serving cell includes: the current measurement result of the serving cell and the change trend of the measurement result of the serving cell.
  • Step 61 The terminal device receives the configuration information sent by the network device.
  • Step 62 The terminal equipment measures the serving cell.
  • Step 63 The terminal device receives M available MCS levels indicated by the first downlink channel.
  • the network device indicates M available MCS levels for the terminal device through the first downlink information.
  • steps 61 to 63 are the same as steps 41 to 43 in Example 1, so they will not be described again.
  • Step 64 The terminal device determines whether to use the first MCS level for uplink transmission or not to perform uplink transmission according to the currently measured serving cell measurement result and the change trend of the measurement result.
  • the change trend of the measurement result of the serving cell is a predicted change trend relative to the current measurement result of the serving cell.
  • the acquisition and specific content of the current measurement result of the serving cell are the same as in Example 1, and will not be repeated here.
  • the change trend of the measurement result includes: a first change trend, or a second change trend;
  • the first change trend includes at least one of the following: a TA value becomes smaller; a signal quality measurement result becomes larger; the distance between the terminal device and the network device corresponding to the serving cell becomes smaller;
  • the second change trend includes at least one of the following: the TA value becomes larger; the signal quality measurement result becomes smaller; and the distance between the terminal device and the network device corresponding to the serving cell becomes larger.
  • the above-mentioned first change trend can be understood as a better measurement result, and the second change trend can be understood as a worse measurement result.
  • the terminal device needs to obtain the future trend of signal quality measurement results.
  • the future moment can be determined based on the predicted moment when the uplink transmission to be sent arrives at the network device.
  • the network device Predict the time when the uplink transmission to be sent arrives at the network device, which can be calculated from the current location information of the terminal device, the movement track of the terminal device, the ephemeris information of the network device of the serving cell, and other information, and the calculated network device receives the uplink transmission. Time (or the time when the upstream transmission arrives at the network device).
  • the prediction of the change trend of the measurement result can include at least one of the following: According to the current TA value corresponding to the current time n (or the TA value at the sending time of the uplink transmission), it is assumed to be TA1; a period of time in the future, that is, It is predicted that the time when the uplink transmission to be sent arrives at the network device is time m, and the TA value of the time m is predicted to be TA2. According to the difference between the two, the change trend can be determined as the first change trend or the second change trend.
  • the change of the signal quality measurement result can also be inferred, for example, the TA value becomes smaller and the signal quality measurement result becomes larger.
  • the trajectory of the satellite and the trajectory of the satellite predict the predicted position of the terminal device and the predicted position of the satellite in a period of time in the future (that is, the time when the uplink transmission reaches the network device), and calculate the terminal device according to the predicted position of the terminal device and the predicted position of the satellite
  • the predicted distance to the satellite based on the predicted distance and the distance between the current terminal device and the network device, determine whether the change trend of the measurement result is the first change trend or the second change trend (that is, determine the change trend of the measurement result to change Good or bad).
  • the terminal device determines whether to use the first MCS level for uplink transmission or not to perform the current uplink transmission based on the current measurement result of the serving cell, the future change trend of the measurement result, and the corresponding relationship between the quantization interval of the measurement result and the MCS level.
  • Uplink transmission Specifically, for different scenarios of the first change trend or the second change trend, the following processing may be included:
  • the corresponding third MCS level is determined according to the current measurement result of the serving cell and the corresponding relationship between the quantization interval of the measurement result and the MCS level.
  • the UE selects the corresponding MCS according to the current channel quality and the mapping relationship between the channel quality interval configured by the network and the MCS level.
  • Level ie the third MCS level.
  • the method for determining the uplink transmission control includes:
  • the third MCS level is not lower than the lowest MCS level among the M available MCS levels, determine the first MCS level based on the third MCS level, and use the first MCS level for uplink transmission;
  • the third MCS level is not among the M available MCS levels, and the third MCS level is lower than the lowest MCS level among the M available MCS levels, it is determined not to perform the uplink transmission.
  • the terminal The device can determine to perform this uplink transmission, and can determine the first MCS level adopted this time based on the third MCS level; otherwise, the terminal device can determine not to perform this uplink transmission.
  • the determining the first MCS level based on the third MCS level includes:
  • the third MCS level is one of M available MCS levels, use the third MCS level as the first MCS level;
  • the M available MCS levels is used as the first MCS level.
  • the terminal device uses the third MCS level (as the first MCS level) to perform on the uplink resource data transmission.
  • M MCS levels indicated in the PDCCH do not include the third MCS level selected by the terminal device, one of the following can be performed:
  • the terminal equipment can use the highest MCS indicated by the PDCCH for data transmission, that is, the highest MCS level is regarded as the first Uplink transmission is performed at MCS level.
  • the terminal device If the third MCS level selected by the terminal device is lower than the lowest MCS of the M available MCS levels indicated by the PDCCH, the terminal device skips this uplink transmission.
  • the third MCS level is not among the M available MCS levels and the third MCS level is lower than the lowest MCS level among the M available MCS levels, if the first The M available MCS levels indicated in a downlink channel include the lowest MCS level supported by the system, and the lowest MCS level supported by the system is taken as the first MCS level, and the first MCS level is used for uplink transmission.
  • the M available MCS levels indicated by the first downlink channel in this example may include the lowest MCS level among the N MCS levels;
  • the system can support the terminal equipment to use the lowest MCS level for uplink transmission.
  • the third MCS level determined based on the foregoing method is not among the M available MCS levels, and the third The MCS level is lower than the lowest MCS level among the M available MCS levels.
  • uplink transmission can be maintained, and the lowest MCS level supported by the system included in the M available MCS levels is taken as the first MCS level performs this uplink transmission.
  • the UE does not need skip uplink transmission at this time, and uses the lowest MCS level supported by the system for transmission.
  • the change trend of the measurement result of the serving cell is the second change trend, it is determined not to perform the uplink transmission. That is, if the UE judges that the measurement result of the serving cell will deteriorate in the future, the UE will skip this uplink transmission.
  • the change trend of the measurement result of the serving cell is the second change trend, and in combination with whether the M available MCS levels indicated by the first downlink channel include the lowest MCS level supported by the system, the following processing methods can be used :
  • the change trend of the measurement result of the serving cell is the second change trend
  • the M available MCS levels indicated in the first downlink channel include the lowest MCS level supported by the system
  • the system supported The lowest MCS level is used as the first MCS level
  • the first MCS level is used for uplink transmission.
  • the change trend of the measurement result of the serving cell is the second change trend, and the M available MCS levels indicated in the first downlink channel do not include the lowest MCS level supported by the system, it is determined not to perform the Uplink transmission.
  • the terminal device does not need to skip uplink transmission, and uses the lowest supported by the system. MCS level for transmission.
  • the measurement result of the serving cell becomes better (the worse is the opposite), including at least one of the following: the TA value becomes smaller; the CSI measurement value becomes larger; and the distance from the terminal device to the satellite becomes smaller.
  • the network configures the correspondence between multiple MCS levels and multiple channel quality parameters.
  • the base station indicates multiple available MCS parameters.
  • the UE decides which MCS level to use for uplink transmission according to the current channel quality and the future change trend of the channel quality. If the MCS parameters are not met, the UE will skip the uplink transmission or use the lowest MCS level supported by the system (if the lowest MCS level is indicated in the PDCCH) for transmission.
  • MCS1 is greater than MCS2, greater than MCS3, greater than MCS4, greater than MCS5, greater than default (Default) MCS level, where the default MCS level can be understood as the lowest level MCS supported by the system; and configure different TA measurement result thresholds to determine the correspondence between 6 MCS levels and 5 TA intervals;
  • the terminal device Before the first uplink transmission, the terminal device receives the network device through the first downlink channel (that is, the PDCCH indicating the uplink scheduling) indicating that the M available MCS levels this time are MCS2 and MCS3; in T1-send (send ) Time, predict that the TA value becomes smaller (that is, the first change trend), then according to the corresponding relationship, select MCS3 according to the TA value corresponding to the time, and correspondingly, the network equipment (satellite, which can be called gNB in the figure) is at T1 -Receive (receive) moment to receive the information transmitted on PUSCH using MCS3.
  • the network equipment as gNB in the figure
  • M available MCS levels in this uplink transmission.
  • the M available MCS levels corresponding to different times are different (including There are different numbers M, and/or different MCS levels, etc.); of course, it is also possible that if the M MCS levels available for this uplink transmission and the previous uplink transmission are the same, it is possible that the network equipment does not need to indicate every time, then the terminal The device can use the M available MCS levels received and saved the previous time to perform this processing by default, and of course, it can also give instructions every time.
  • the terminal device receives that the network device indicates the current M available MCS levels as MCS2 and MCS3 through the first downlink channel (that is, the PDCCH indicating uplink scheduling);
  • the predicted TA value at T2-send will decrease (that is, the first trend of change).
  • the current TA value at T2-send corresponds to MCS1, but MCS1 is not among the M available MCS levels (MCS2, MCS3) indicated this time. However, MCS1 is greater than MCS2. Therefore, this uplink transmission can use the highest MCS level among the M available MCS levels, that is, MCS2, as the first MCS level for uplink transmission.
  • the terminal device receives the network device through the first downlink channel (that is, the PDCCH indicating the uplink scheduling) indicates that the M available MCS levels this time are MCS1 and the default MCS (that is, the lowest MCS level supported by the system); T3-send predicts that the TA value will increase (that is, the second change trend), and the system indication contained in the M available MCS levels indicated in the first downlink channel can be used
  • the lowest MCS level which is the default MCS, performs this uplink transmission.
  • the most fundamental channel quality that determines whether the uplink transmission can be received correctly is actually the channel quality when the uplink transmission is received. If the future change trend of the channel quality becomes better, the MCS level corresponding to the current measurement result is suitable for the receiving moment of the uplink transmission. If the future trend of change is getting worse, the terminal device cannot determine how bad it is. If the first downlink channel does not indicate the lowest MCS level supported by the system, the terminal device should skip the uplink transmission because the base station does not support this time. Uplink transmission uses the lowest MCS level for full reduction. In this example, the terminal device only needs to predict the change trend, and does not need to predict the specific value, which is simple to implement.
  • the measurement-related information of the serving cell includes: the predicted measurement result of the serving cell at the first moment; wherein, the first moment is: the predicted time when the uplink transmission data is received in the serving cell.
  • a specific implementation process of this example, as shown in Figure 8, may include:
  • Step 81 The terminal device receives the configuration information sent by the network device.
  • Example 1 The only difference from Example 1 is that in this example, the channel quality interval is used to characterize the channel quality when the currently dynamically scheduled uplink resource is received on the network side. Others are the same as the specific description of step 41, and will not be repeated here.
  • Step 82 to step 83 are the same as step 42 to step 43 of Example 1, and will not be described again.
  • Step 84 The terminal device predicts the predicted measurement result of the serving cell at the first moment according to the location information, the movement track, and the ephemeris information of the network device.
  • the terminal equipment predicts the channel quality when the uplink resource transmission is received on the network side according to its own motion trajectory and the motion trajectory of the satellite.
  • the predicted measurement result of the serving cell at the first moment includes at least one of the following:
  • the estimated distance between the terminal device and the network device corresponding to the serving cell At the first moment, the estimated distance between the terminal device and the network device corresponding to the serving cell.
  • this uplink transmission is expected to be received on the network device side, or can be understood as the moment when this uplink transmission arrives at the network device.
  • the method of predicting the TA value of the serving cell at the first moment may be: the terminal device calculates the time when the network device receives the uplink transmission according to the ephemeris information, and uses the location of the network device at that moment and the predicted location of the terminal device Calculate the TA value between the terminal device and the network device.
  • Another method of predicting the TA value can also be determined based on a preset adjustment value.
  • the current TA value can correspond to a preset adjustment value range and the time period corresponding to the adjustment value, based on the predicted uplink transmission to the network device.
  • the predicted TA value is calculated based on the time difference between the time and the current time and the aforementioned determined adjustment value, that is, the current TA value plus a ⁇ (adjustment value).
  • the estimated distance between the terminal device and the network device corresponding to the serving cell at the first moment may include:
  • the predicted position of the terminal device at the first moment can be calculated; the predicted position of the network device at the first moment can be calculated according to the ephemeris information of the satellite; based on the two predicted positions, the terminal device and the The estimated distance between network devices.
  • the prediction mode of the predicted signal quality measurement result of the serving cell at the first moment may include:
  • the terminal device is based on the distance between the terminal device and the network device corresponding to the serving cell at the moment of uplink transmission and the distance between the terminal device and the network device corresponding to the serving cell at the first moment. Distance, determine the first proportional relationship;
  • the terminal device calculates the estimated signal quality measurement result of the serving cell at the first moment according to the first proportional relationship and the CSI measurement result at the time when the uplink transmission is sent.
  • the first proportional relationship may be the distance between the terminal device and the network device corresponding to the serving cell at the time of uplink transmission, and the corresponding relationship between the terminal device and the serving cell at the first moment
  • it may be the square value of the distance between the terminal device and the network device corresponding to the serving cell at the moment of uplink transmission and the difference between the terminal device and the network device corresponding to the serving cell at the first moment.
  • an example of predicting the measurement result of the serving cell may include at least one of the following:
  • the terminal equipment calculates the time when the network side receives the CG transmission based on the ephemeris information, and calculates the distance between the terminal equipment and the satellite base station by using the position of the satellite at that time and the predicted position of the terminal equipment;
  • the terminal device calculates the time when the network side receives the CG transmission based on the ephemeris information, and calculates the TA between the terminal device and the satellite base station by using the position of the satellite at that time and the predicted terminal device position;
  • the terminal device scales the CSI measurement value at the CG transmission time in an equal proportion as the CSI measurement value at the predicted CG reception time.
  • the proportional scaling can be inversely proportional to the square of the distance.
  • Step 85 The terminal device determines whether to use the first MCS level for uplink transmission or not to perform uplink transmission according to the predicted measurement result of the serving cell at the first moment and the change trend of the measurement result.
  • the above two steps include the following processing: the terminal equipment predicts the channel quality of the uplink resource transmission when receiving on the network side according to its own motion trajectory and the motion trajectory of the satellite, and the terminal equipment predicts the channel quality when receiving the network side according to the prediction of the network side. Quality and the mapping relationship between the channel quality interval configured by the network and the MCS level, select the corresponding MCS level, and then determine whether to use the first MCS level for uplink transmission or not to perform uplink transmission.
  • the process of selecting the corresponding MCS level in this example may include:
  • the terminal device determines the corresponding fourth MCS level according to the expected measurement result of the serving cell at the first moment, and the corresponding relationship between the quantization interval of the measurement result and the MCS level.
  • determining that the method for controlling uplink transmission is to use the first MCS level for uplink transmission or not to perform uplink transmission may include:
  • the fourth MCS level is not lower than the lowest MCS level among the M available MCS levels, determine the first MCS level based on the fourth MCS level, and use the first MCS level for uplink transmission;
  • the fourth MCS level is not among the M available MCS levels and the fourth MCS level is lower than the lowest MCS level among the M available MCS levels, it is determined not to perform the uplink transmission.
  • the terminal The device can determine to perform this uplink transmission, and can determine the first MCS level adopted this time based on the fourth MCS level; otherwise, the terminal device can determine not to perform this uplink transmission.
  • the determining the first MCS level based on the fourth MCS level includes:
  • M available MCS levels include the fourth MCS level, use the fourth MCS level as the first MCS level;
  • the M available MCS levels If the fourth MCS level is not among the M available MCS levels, and the fourth MCS level is higher than the highest MCS level among the M available MCS levels, then the M available MCS levels The highest MCS level among the levels is taken as the first MCS level.
  • the terminal device uses the fourth MCS level (taking it as the first MCS level) Data transmission is performed on the uplink resource.
  • the M available MCS levels indicated in the PDCCH (first downlink channel) do not include the fourth MCS level selected by the terminal device, perform one of the following:
  • the terminal device can use the highest MCS indicated by the PDCCH for data transmission;
  • the terminal device If the fourth MCS level selected by the terminal device is lower than the lowest MCS among the M available MCS levels indicated in the PDCCH (first downlink channel), the terminal device skips this uplink transmission.
  • the network configures the correspondence between multiple MCS levels and multiple channel quality parameters.
  • the base station indicates multiple available MCS parameters.
  • the UE predicts the channel quality during reception on the uplink transmission network side to determine which MCS level to use for uplink transmission. If the MCS parameters are not met, if the MCS selected by the UE is higher than the highest MCS indicated by the PDCCH, the UE can use the highest MCS indicated by the PDCCH for data transmission; if the MCS selected by the UE is lower than the lowest MCS indicated by the PDCCH, the UE will skip this time Uplink transmission.
  • MCS1 is greater than MCS2, greater than MCS3, greater than MCS4, greater than MCS5, and the configuration is different TA measurement result threshold, and then determine the corresponding relationship with 5 MCS levels and 5 TA intervals;
  • the terminal device Before the first uplink transmission, the terminal device receives the network device through the first downlink channel (that is, the PDCCH indicating the uplink scheduling) indicating that the M available MCS levels this time are MCS2 and MCS3; in T1-send (send ) Time prediction of the TA value of T1-Receive at the receiving time (that is, the first time) of this uplink transmission at the network device, and select MCS3 according to the predicted TA value and the corresponding relationship.
  • the network device (satellite, which can be called The gNB in the T1-receive (receive) time receives the information transmitted on the PUSCH using MCS3.
  • M available MCS levels in this uplink transmission.
  • the M available MCS levels corresponding to different times are different (including There are different numbers M, and/or different MCS levels, etc.); of course, it is also possible that if the M MCS levels available for this uplink transmission and the previous uplink transmission are the same, it is possible that the network equipment does not need to indicate every time, then the terminal The device can use the M available MCS levels received and saved the previous time to perform this processing by default, and of course, it can also give instructions every time.
  • the terminal device receives that the network device indicates the current M available MCS levels as MCS2 and MCS3 through the first downlink channel (that is, the PDCCH indicating uplink scheduling); T2-send time predicts the TA value of T2-Receive at the receiving time (that is, the first time) of this uplink transmission at the network device, and selects MCS1 according to the predicted TA value and the corresponding relationship, but MCS1 is not in the M indicated this time Within the available MCS levels (MCS2, MCS3), but MCS1 is greater than MCS2, therefore, this uplink transmission can use the highest MCS level among the M available MCS levels, that is, MCS2, as the first MCS level for uplink transmission.
  • MCS2 the available MCS levels
  • the terminal device received the network device through the first downlink channel (that is, the PDCCH indicating the uplink scheduling) indicates that the M available MCS levels this time are MCS1 and the default MCS (that is, the lowest MCS level supported by the system); T3-send time predicts the TA value of T3-Receive at the receiving time (that is, the first time) of this uplink transmission at the network device, and selects it according to the predicted TA value and the corresponding relationship MCS5, but MCS5 is not included in the M available MCS levels indicated this time, so this uplink transmission (that is, the current uplink transmission of Skip shown in the figure) is not performed.
  • the first downlink channel that is, the PDCCH indicating the uplink scheduling
  • the most fundamental channel quality that determines whether the uplink transmission can be received correctly is actually the channel quality when the uplink transmission is received.
  • the terminal equipment predicts that the channel quality when receiving the uplink transmission network is closer to the most real receiving channel condition, and realizes more accurate selection and use of the MCS level.
  • the most appropriate MCS level is selected according to the measurement results of different serving cells of the terminal equipment, and then the first MCS level is used for uplink transmission; or the uplink transmission is not performed. transmission.
  • the uplink transmission of the terminal equipment can be accurately controlled, and the most suitable MCS level can be determined in combination with the measurement related information of the serving cell, thereby avoiding the problems of the decrease of transmission efficiency and the failure of uplink transmission reception.
  • the embodiment of the present invention provides a terminal device, as shown in FIG. 10, including:
  • the first communication unit 91 performs uplink transmission
  • the first processing unit 92 controls the uplink transmission; wherein the method for controlling the uplink transmission includes: using the first modulation and decoding scheme MCS level for uplink transmission, or not performing uplink transmission;
  • the first MCS level is determined according to at least one of the following: measurement related information of the serving cell of the terminal device, and/or M available MCS levels indicated by the first downlink channel; M is greater than An integer equal to 1.
  • an embodiment of the present invention also provides a network device, as shown in FIG. 11, including:
  • the second communication unit 1001 receives the uplink transmission using the first modulation and decoding scheme MCS level transmission;
  • the first MCS level is an MCS level determined according to at least one of the following: measurement related information of the serving cell of the terminal device, and/or the M number of information indicated for the terminal device by the network device through the first downlink channel Available MCS level; M is an integer greater than or equal to 1.
  • the uplink transmission may be transmission on configuration grant (CG) resources.
  • the network device may be a satellite in the NTN scenario.
  • the measurement related information of the serving cell includes: the current measurement result of the serving cell.
  • the solution provided in this example determines the second MCS level according to the current measurement result of the serving cell and the corresponding relationship between the quantization interval of the measurement result and the MCS level; and then according to the second MCS level and the M available MCS Level, determine to perform uplink transmission, or determine to use the first MCS level for uplink transmission.
  • the first communication unit 91 of the terminal device receives the configuration information sent by the network device.
  • the second communication unit 1001 of the network device sends configuration information to the terminal device.
  • the configuration information may be carried by RRC, or by MAC CE, or by PDCCH, or by PDSCH, etc., which is not exhaustive here.
  • the terminal device may also determine the configuration information according to the protocol, or the terminal device may also use The configuration information is determined in an implicit way, and this example does not exhaustively.
  • the configuration information in this step may specifically include at least one of the following:
  • N MCS levels (or N sets of MCS level parameters can be considered), N is an integer greater than or equal to 1.
  • K-1 serving cell measurement result thresholds are used to determine K serving cell measurement result intervals; the K-1 measurement result thresholds may not be configured by the network device , Can be preset or determined by the terminal device.
  • obtaining K-1 measurement result thresholds may be: preset, for example, it may be preset according to the protocol, that is, the K-1 measurement result thresholds are preset on both the terminal device and the network device side; Or, it can be determined by the terminal device itself.
  • K-1 measurement result thresholds which may include at least one of the following: at least one threshold for signal quality measurement results, and/or at least one quantization threshold for TA value, and/or, for distance At least one threshold value.
  • the measurement result quantization interval can be K
  • the MCS level can be N. That is to say, the corresponding relationship between the measurement result quantization interval and the MCS level can be understood as: K measurement result quantization regions and N MCS levels Correspondence between.
  • the K measurement result quantization intervals are determined according to the K-1 measurement result thresholds.
  • the channel quality interval is used to characterize the channel quality at the time when the currently dynamically scheduled uplink resource is sent on the terminal device side.
  • the currently dynamically scheduled uplink resource may be a physical uplink shared channel (PUSCH, Physical Uplink Share Channel).
  • the measurement result quantification interval may include one of the following:
  • the quantization interval of the distance between the terminal device and the network device is the quantization interval of the distance between the terminal device and the network device.
  • the serving cell measurement result interval is used for the current serving cell measurement result of the terminal device.
  • the first communication unit 91 of the terminal device performs serving cell measurement.
  • the current measurement result of the serving cell includes at least one of the following:
  • the current distance between the terminal device and the network device corresponding to the serving cell is the current distance between the terminal device and the network device corresponding to the serving cell.
  • the signal quality measurement results may include: CSI measurement results, Reference Signal Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Signal Received Quality (RSRQ, Reference Signal) At least one of Receiving Quality) and Signal to Interference and Noise Ratio (SINR, Signal to Reference Ratio).
  • RSRP Reference Signal Received Power
  • RSSI Received Signal Strength Indicator
  • RSSRQ Reference Signal Received Quality
  • SINR Signal to Interference and Noise Ratio
  • the first communication unit 91 of the terminal device receives M available MCS levels indicated by the first downlink channel.
  • the second communication unit 1001 of the network device indicates the M available MCS levels for the terminal device through the first downlink information.
  • the first downlink channel may be: a physical downlink control channel (PDCCH, Physical Downlink Control CHannel) for dynamically scheduling uplink transmission.
  • PDCH Physical Downlink Control CHannel
  • the M available MCS indicated by the first downlink channel are included in the N MCS levels included in the configuration information; in other words, the N MCS levels include at least the first downlink channel indication The M available MCS levels.
  • the manner of indicating the M available MCS levels in the first downlink channel may be: indicating only the indexes (Index) of the M MCS levels, or indicating through a bitmap (bitmap).
  • the first processing unit 92 of the terminal device controls the uplink transmission; wherein the method for the first processing unit 92 of the terminal device to control the uplink transmission includes: using the first modulation and decoding scheme MCS level for uplink transmission, or , No upstream transmission is performed.
  • the first processing unit 92 of the terminal device determines the second MCS level according to the current measurement result of the serving cell and the corresponding relationship between the measurement result quantization interval and the MCS level.
  • the first processing unit 92 of the terminal device determines the second MCS level based on the second MCS level when the second MCS level is not lower than the lowest MCS level among the M available MCS levels.
  • An MCS level, the first MCS level is used for uplink transmission in the first communication unit 91;
  • the first processing unit 92 of the terminal device is that the second MCS level is not among the M available MCS levels, and the second MCS level is lower than the lowest MCS level among the M available MCS levels In the case of, it is determined not to perform the uplink transmission.
  • the first processing unit 92 of the terminal device includes the second MCS level among the M available MCS levels, use the second MCS level as the first MCS level;
  • the M available MCS levels The highest MCS level among the levels is taken as the first MCS level.
  • the measurement-related information of the serving cell includes: the current measurement result of the serving cell and the change trend of the measurement result of the serving cell.
  • the first communication unit 91 of the terminal device receives the configuration information sent by the network device. It should be pointed out that, in addition to the above-mentioned network device directly sending the configuration information for the terminal device, the terminal device (or network device) may also determine the configuration information according to the protocol, or the terminal device may also use The configuration information is determined in an implicit way, and this example does not exhaustively.
  • the first communication unit 91 of the terminal device performs serving cell measurement.
  • the first communication unit 91 of the terminal device receives M available MCS levels indicated by the first downlink channel.
  • the second communication unit 1001 of the network device indicates M available MCS levels for the terminal device through the first downlink information.
  • the first processing unit 92 of the terminal device determines whether to use the first MCS level for uplink transmission or not to perform uplink transmission according to the currently measured serving cell measurement result and the change trend of the measurement result.
  • the change trend of the measurement result of the serving cell is a predicted change trend relative to the current measurement result of the serving cell.
  • the acquisition and specific content of the current measurement result of the serving cell are the same as in Example 1, and will not be repeated here.
  • the change trend of the measurement result includes: a first change trend, or a second change trend;
  • the first change trend includes at least one of the following: a TA value becomes smaller; a signal quality measurement result becomes larger; the distance between the terminal device and the network device corresponding to the serving cell becomes smaller;
  • the second change trend includes at least one of the following: the TA value becomes larger; the signal quality measurement result becomes smaller; and the distance between the terminal device and the network device corresponding to the serving cell becomes larger.
  • the above-mentioned first change trend can be understood as a better measurement result, and the second change trend can be understood as a worse measurement result.
  • the terminal device determines whether to use the first MCS level for uplink transmission or not to perform the current uplink transmission based on the current measurement result of the serving cell, the future change trend of the measurement result, and the corresponding relationship between the quantization interval of the measurement result and the MCS level.
  • Uplink transmission Specifically, for different scenarios of the first change trend or the second change trend, the following processing may be included:
  • the change trend of the measurement result of the serving cell is the first change trend of the first processing unit 92 of the terminal device, it will be based on the current measurement result of the serving cell and the correspondence between the measurement result quantification interval and the MCS level Relationship to determine the corresponding third MCS level.
  • the first processing unit 92 of the terminal device determines the first MCS level based on the third MCS level in the case that the third MCS level is not lower than the lowest MCS level among the M available MCS levels, Determine that the first communication unit 91 uses the first MCS level for uplink transmission;
  • the first processing unit 92 of the terminal device is that the third MCS level is not among the M available MCS levels, and the third MCS level is lower than the lowest MCS level among the M available MCS levels In the case of, it is determined not to perform the uplink transmission.
  • the first processing unit 92 of the terminal device uses the third MCS level as the first MCS level;
  • the M available MCS levels is used as the first MCS level.
  • the first processing unit 92 of the terminal device is that the third MCS level is not among the M available MCS levels, and the third MCS level is lower than the lowest MCS level among the M available MCS levels In the case of, if the M available MCS levels indicated in the first downlink channel include the lowest MCS level supported by the system, the lowest MCS level supported by the system is taken as the first MCS level, and the first MCS level is adopted. Level for uplink transmission.
  • the first processing unit 92 of the terminal device determines not to perform the uplink transmission. That is, if the UE judges that the measurement result of the serving cell will deteriorate in the future, the UE will skip this uplink transmission.
  • the first processing unit 92 of the terminal device includes the lowest MCS level supported by the system among the M available MCS levels indicated by the first downlink channel, the following processing methods may be adopted:
  • the change trend of the measurement result of the serving cell is the second change trend
  • the M available MCS levels indicated in the first downlink channel include the lowest MCS level supported by the system
  • the system supported The lowest MCS level is taken as the first MCS level
  • the first communication unit 91 uses the first MCS level for uplink transmission.
  • the change trend of the measurement result of the serving cell is the second change trend, and the M available MCS levels indicated in the first downlink channel do not include the lowest MCS level supported by the system, it is determined not to perform the Uplink transmission.
  • the measurement-related information of the serving cell includes: the predicted measurement result of the serving cell at the first moment; wherein, the first moment is: the predicted time when the uplink transmission data is received in the serving cell.
  • the first communication unit 91 of the terminal device receives the configuration information sent by the network device.
  • Example 1 The only difference from Example 1 is that in this example, the channel quality interval is used to characterize the channel quality when the currently dynamically scheduled uplink resource is received on the network side. Others are the same as the specific description of step 41, and will not be repeated here.
  • the measurement of the first communication unit 91 of the terminal device and the processing of receiving the first downlink channel are the same as the foregoing example, and will not be repeated here.
  • the first processing unit 92 of the terminal device predicts the predicted measurement result of the serving cell at the first moment according to the position information, the movement track, and the ephemeris information of the network device.
  • the predicted measurement result of the serving cell at the first moment includes at least one of the following:
  • the estimated distance between the terminal device and the network device corresponding to the serving cell At the first moment, the estimated distance between the terminal device and the network device corresponding to the serving cell.
  • this uplink transmission is expected to be received on the network device side, or can be understood as the moment when this uplink transmission arrives at the network device.
  • the method of predicting the TA value of the serving cell at the first moment may be: the first processing unit 92 of the terminal device calculates the time when the network device receives the uplink transmission according to the ephemeris information, and uses the location of the network device at that moment , And the predicted location of the terminal device to calculate the TA value between the terminal device and the network device.
  • Another method of predicting the TA value can also be determined based on a preset adjustment value.
  • the current TA value can correspond to a preset adjustment value range and the time period corresponding to the adjustment value, based on the predicted uplink transmission to the network device.
  • the predicted TA value is calculated based on the time difference between the time and the current time and the aforementioned determined adjustment value, that is, the current TA value plus a ⁇ (adjustment value).
  • the estimated distance between the terminal device and the network device corresponding to the serving cell at the first moment may include:
  • the first processing unit 92 of the terminal device calculates the estimated position of the terminal device at the first moment according to the current position and movement trajectory of the terminal device; calculates the estimated position of the network device at the first moment according to the ephemeris information of the satellite; Two predicted locations can determine the predicted distance between the terminal device and the network device.
  • the prediction mode of the predicted signal quality measurement result of the serving cell at the first moment may include:
  • the first processing unit 92 of the terminal device is based on the distance between the terminal device and the network device corresponding to the serving cell at the time when the uplink transmission is sent, and the terminal device corresponding to the serving cell at the first moment.
  • the distance between the network devices of the network determine the first proportional relationship
  • the predicted signal quality measurement result of the serving cell at the first time is calculated.
  • the first proportional relationship may be the distance between the terminal device and the network device corresponding to the serving cell at the time of uplink transmission, and the corresponding relationship between the terminal device and the serving cell at the first moment
  • it may be the square value of the distance between the terminal device and the network device corresponding to the serving cell at the moment of uplink transmission and the difference between the terminal device and the network device corresponding to the serving cell at the first moment.
  • the first processing unit 92 of the terminal device determines whether to use the first MCS level for uplink transmission or not to perform uplink transmission according to the predicted measurement result of the serving cell at the first moment and the change trend of the measurement result.
  • the first processing unit 92 of the terminal device determines the corresponding fourth MCS level according to the expected measurement result of the serving cell at the first moment and the correspondence between the quantization interval of the measurement result and the MCS level.
  • determining that the method for controlling uplink transmission is to use the first MCS level for uplink transmission or not to perform uplink transmission may include:
  • the first processing unit 92 of the terminal device determines the first MCS level based on the fourth MCS level when the fourth MCS level is not lower than the lowest MCS level among the M available MCS levels,
  • the first communication unit 91 uses the first MCS level to perform uplink transmission;
  • the fourth MCS level is not among the M available MCS levels and the fourth MCS level is lower than the lowest MCS level among the M available MCS levels, it is determined not to perform the uplink transmission.
  • the first processing unit 92 of the terminal device includes the fourth MCS level among the M available MCS levels, use the fourth MCS level as the first MCS level;
  • the fourth MCS level is higher than the highest MCS level among the M available MCS levels .
  • the highest MCS level among the M available MCS levels is taken as the first MCS level.
  • the most appropriate MCS level is selected according to the measurement results of different serving cells of the terminal equipment, and then the first MCS level is used for uplink transmission; or the uplink transmission is not performed. transmission.
  • the uplink transmission of the terminal equipment can be accurately controlled, and the most suitable MCS level can be determined in combination with the measurement related information of the serving cell, thereby avoiding the problems of the decrease of transmission efficiency and the failure of uplink transmission reception.
  • FIG. 12 is a schematic structural diagram of a communication device 1400 according to an embodiment of the present invention.
  • the communication device in this embodiment may be specifically a terminal device or a network device in the foregoing embodiment.
  • the communication device 1400 shown in FIG. 12 includes a processor 1410, and the processor 1410 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.
  • the communication device 1400 may further include a memory 1420.
  • the processor 1410 can call and run a computer program from the memory 1420 to implement the method in the embodiment of the present invention.
  • the memory 1420 may be a separate device independent of the processor 1410, or may be integrated in the processor 1410.
  • the communication device 1400 may further include a transceiver 1430, and the processor 1410 may control the transceiver 1430 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 1430 may include a transmitter and a receiver.
  • the transceiver 1430 may further include an antenna, and the number of antennas may be one or more.
  • the communication device 1400 may specifically be a corresponding process implemented by a terminal device or a network device in the embodiment of the present invention, and for the sake of brevity, details are not described herein again.
  • Fig. 13 is a schematic structural diagram of a chip according to an embodiment of the present invention.
  • the chip 1500 shown in FIG. 13 includes a processor 1510, and the processor 1510 can call and run a computer program from the memory to implement the method in the embodiment of the present invention.
  • the chip 1500 may further include a memory 1520.
  • the processor 1510 can call and run a computer program from the memory 1520 to implement the method in the embodiment of the present invention.
  • the memory 1520 may be a separate device independent of the processor 1510, or may be integrated in the processor 1510.
  • the chip 1500 may further include an input interface 1530.
  • the processor 1510 can control the input interface 1530 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
  • the chip 1500 may further include an output interface 1540.
  • the processor 1510 can control the output interface 1540 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 corresponding process implemented by the terminal device or the network device in the embodiment of the present invention.
  • the chip mentioned in the embodiment of the present invention may also be referred to as a system-on-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 above-mentioned processor can 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.
  • 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. It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to, these and any other suitable types of memories.
  • 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 DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), 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) and so on. That is, the memory in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.
  • FIG. 14 is a schematic block diagram of a communication system 1600 provided by an embodiment of the present application. As shown in FIG. 14, the communication system 1600 includes a network device 1610 and a terminal device 1620.
  • the network device 1610 can be used to implement the corresponding functions implemented by the communication device in the above method, and the terminal device 1620 can be used to implement the corresponding functions implemented by the terminal in the above method. For brevity, 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 can be applied to the network device or satellite or 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 will not repeat them here.
  • the embodiment of the present invention also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device or satellite or 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, for It's concise, so I won't repeat it here.
  • the embodiment of the present invention also provides a computer program.
  • the computer program can be applied to the network device or satellite or terminal device in the embodiment of the present invention.
  • the computer program runs on the computer, the computer can execute the network device implementation of each method in the embodiment of the present invention. For the sake of brevity, the corresponding process will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • 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 prior art 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 methods described in the various embodiments 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

Sont divulgués dans la présente invention un procédé de transmission de données, un dispositif terminal, un dispositif de réseau, une puce, un support de stockage lisible par ordinateur, un produit programme d'ordinateur et un programme informatique. Ledit procédé suppose qu'un dispositif terminal commande une transmission en liaison montante. Le procédé de commande d'une transmission en liaison montante suppose d'utiliser un premier niveau de schéma de modulation et de décodage (MCS) pour effectuer ou non une transmission en liaison montante. Le premier niveau de MCS est déterminé en fonction d'informations relatives à une mesure d'une cellule de desserte du dispositif terminal et/ou de M niveaux de MCS disponibles indiqués par un premier canal de liaison descendante. M est un entier supérieur ou égal à 1.
PCT/CN2020/078466 2020-03-09 2020-03-09 Procédé de transmission de données, dispositif terminal et dispositif de réseau WO2021179135A1 (fr)

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PCT/CN2020/078466 WO2021179135A1 (fr) 2020-03-09 2020-03-09 Procédé de transmission de données, dispositif terminal et dispositif de réseau
CN202080094223.2A CN114982323A (zh) 2020-03-09 2020-03-09 一种数据传输方法、终端设备、网络设备

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106559894A (zh) * 2015-09-29 2017-04-05 中国移动通信集团公司 一种上行链路mcs等级的决策方法和设备
US20180034606A1 (en) * 2016-07-31 2018-02-01 Lg Electronics Inc. Method and apparatus for transmitting uplink data based on hybrid beamforming in a wireless communication system
CN109076376A (zh) * 2018-07-20 2018-12-21 北京小米移动软件有限公司 Mcs等级的确定方法、装置、终端及存储介质

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106559894A (zh) * 2015-09-29 2017-04-05 中国移动通信集团公司 一种上行链路mcs等级的决策方法和设备
US20180034606A1 (en) * 2016-07-31 2018-02-01 Lg Electronics Inc. Method and apparatus for transmitting uplink data based on hybrid beamforming in a wireless communication system
CN109076376A (zh) * 2018-07-20 2018-12-21 北京小米移动软件有限公司 Mcs等级的确定方法、装置、终端及存储介质

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