WO2022257576A1 - Procédé et appareil de contrôle de communication, station de base et support lisible par ordinateur - Google Patents

Procédé et appareil de contrôle de communication, station de base et support lisible par ordinateur Download PDF

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Publication number
WO2022257576A1
WO2022257576A1 PCT/CN2022/085005 CN2022085005W WO2022257576A1 WO 2022257576 A1 WO2022257576 A1 WO 2022257576A1 CN 2022085005 W CN2022085005 W CN 2022085005W WO 2022257576 A1 WO2022257576 A1 WO 2022257576A1
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Prior art keywords
rate matching
matching mode
communication control
control method
rate
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PCT/CN2022/085005
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English (en)
Chinese (zh)
Inventor
张元博
刘蕊
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中兴通讯股份有限公司
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Publication of WO2022257576A1 publication Critical patent/WO2022257576A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/0013—Rate matching, e.g. puncturing or repetition of code symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present disclosure relates to but not limited to the technical field of communication.
  • Spectrum sharing technologies generally include carrier-level spectrum sharing technologies and Dynamic Spectrum Sharing (DSS, Dynamic Spectrum Sharing) technologies.
  • DSS Dynamic Spectrum Sharing
  • the spectrum configuration of DSS technology can be changed at the transmission time interval (TTI, Transmission Time Interval) level, and the spectrum resources required by LTE and NR can be adjusted as needed, and the spectrum utilization is more flexible.
  • the present disclosure provides a communication control method, a communication control device, a base station, and a computer-readable medium.
  • the present disclosure provides a communication control method, including: when the trigger condition for switching the rate matching mode of the user equipment UE is satisfied, determining the target rate matching mode of the UE according to the current first rate matching mode of the UE Mode: schedule the UE based on the target rate matching mode.
  • the present disclosure provides a communication control device, including: one or more processors; memory, on which one or more programs are stored, when the one or more programs are processed by the one or more When executed by a processor, the one or more processors implement any communication control method described herein.
  • the present disclosure provides a base station, including: one or more processors; a memory on which one or more programs are stored, and when the one or more programs are executed by the one or more processors , enabling the one or more processors to implement any communication control method described herein.
  • the present disclosure provides a computer-readable medium on which a computer program is stored, and when the program is executed by a processor, any communication control method described herein is implemented.
  • FIG. 1 is a schematic diagram of interference in dynamic spectrum sharing
  • FIG. 2 is a schematic diagram of an interference scenario according to the present disclosure
  • FIG. 3 is a flowchart of a communication control method according to the present disclosure
  • FIG. 4 is a flowchart of some steps in a communication control method according to the present disclosure.
  • FIG. 5 is a flowchart of some steps in a communication control method according to the present disclosure.
  • Fig. 6 is a flowchart of some steps in a communication control method according to the present disclosure.
  • Fig. 7 is a flowchart of some steps in a communication control method according to the present disclosure.
  • FIG. 8 is a flowchart of some steps in a communication control method according to the present disclosure.
  • Fig. 9 is a flowchart of some steps in a communication control method according to the present disclosure.
  • Fig. 10 is a flowchart of some steps in a communication control method according to the present disclosure.
  • Fig. 11 is a flowchart of some steps in a communication control method according to the present disclosure.
  • Fig. 12 is a flowchart of some steps in a communication control method according to the present disclosure.
  • Fig. 13 is a flowchart of some steps in a communication control method according to the present disclosure.
  • FIG. 14 is a block diagram of a communication control device according to the present disclosure.
  • Fig. 15 is a composition block diagram of a base station according to the present disclosure.
  • Fig. 16 is a compositional block diagram of a computer-readable medium according to the present disclosure.
  • Fig. 17 is a schematic diagram of zero power channel state reference signal resource configuration under different antenna ports
  • Fig. 18 is a flowchart of an optional implementation manner of communication control according to the present disclosure.
  • Fig. 19 is a schematic diagram of an interference scenario according to the present disclosure.
  • Fig. 20 is a schematic diagram of an interference scenario according to the present disclosure.
  • Fig. 21 is a schematic diagram of an interference scenario according to the present disclosure.
  • (a) in Figure 1 is the resource allocation situation of the LTE downlink subframe, showing the resource element (RE, Resource Element) occupied by the cell reference signal (CRS, Cell Reference Signal), the physical downlink control channel (PDCCH, Physical Downlink Control Channel), REs occupied by Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel), etc.
  • CRS occupies a large number of REs in a resource block (RB, Resource Block), and is sent at full bandwidth.
  • (b) in Figure 1 is the resource allocation situation of the NR downlink subframe, showing the REs occupied by the PDCCH, the REs occupied by the demodulation reference signal (DM-RS, Demodulation Reference Signal), the REs occupied by the PDSCH, and showing The CRS of LTE and the PDSCH of NR have multiple time-frequency resource conflicts. When LTE and NR coexist, it will cause greater interference.
  • DM-RS demodulation reference signal
  • DM-RS Demodulation Reference Signal
  • the interference between LTE and NR is eliminated by rate matching for LTE CRS.
  • DSS-LTE cell the LTE cell
  • the NR cell NR-CELL also has interference from the same-site neighbor cell LTE-CELL 1 and the non-same-site LTE cell LTE-CELL 2 interference.
  • interference area A comes from LTE-CELL 1 and has relatively high interference power
  • interference area B comes from LTE-CELL 2 and has relatively low interference power.
  • Different interference strengths have different impacts on NR performance.
  • Related technologies cannot well avoid the interference of other LTE neighboring cells other than DSS-LTE cells such as LTE-CELL 1 and LTE-CELL 2.
  • the present disclosure provides a communication control method, which may include steps S100 and S200.
  • step S100 when the trigger condition of switching the rate matching mode of the user equipment (UE, User Equipment) is satisfied, according to the current first rate matching mode of the UE, determine the target rate matching mode of the UE; in step S200 In, the UE is scheduled based on the target rate matching manner.
  • UE User Equipment
  • the supported rate matching methods include RE-level rate matching and symbol-level rate matching; symbol-level rate matching can also include RB symbol-level rate matching and zero power channel state reference signal (ZP CSI-RS, Zero Power Channel State Reference Signal) rate matching.
  • ZP CSI-RS Zero Power Channel State Reference Signal
  • the first rate matching mode refers to the current rate matching mode of the UE
  • the second rate matching mode refers to any one of other rate matching modes other than the current rate matching mode of the UE.
  • the first rate matching mode specifically refers to a specific rate matching mode.
  • the UE's current rate matching method is RE-level rate matching
  • the first rate matching method is RE-level rate matching
  • the second rate matching method is any other rate matching method except RE-level rate matching
  • the UE The current rate matching mode is symbol-level rate matching
  • the first rate matching mode is symbol-level rate matching
  • the second rate matching mode is any other rate matching mode except symbol-level rate matching.
  • the triggering condition for switching the rate matching mode of the UE there is no special limitation on the triggering condition for switching the rate matching mode of the UE.
  • the rate matching mode as the target rate matching mode may be recommended according to the channel information of the UE, and when the recommended result satisfies the second preset condition, it means that the trigger condition is satisfied.
  • the process of determining the UE's target rate matching mode is triggered.
  • the target rate matching mode is a rate matching mode that can improve the performance of NR in the current interference scenario.
  • the target rate matching method is one of multiple rate matching methods that can optimize the performance of NR in the current interference scenario.
  • the target rate matching mode determined in step S100 may be the first rate matching mode, or may be the second rate matching mode.
  • the process of determining the target rate matching mode of the UE is triggered, so as to determine whether the performance of NR can be optimized or A better rate matching method, and UE scheduling based on the determined target rate matching method, so as to improve the downlink throughput of NR cells and LTE cells under dynamic spectrum sharing, and maximize the avoidance of LTE cell interference in various interference scenarios. Improve user experience.
  • the target rate matching mode when the trigger condition is met.
  • the rate matching mode of the UE is switched, that is, the second rate matching mode is determined as the target rate matching mode.
  • the performance of NR in the first rate matching mode and the performance of NR in the second rate matching mode are judged, and the one that can make the performance of NR better is selected as the target rate matching mode.
  • the UE is attempted to be scheduled based on the second rate matching method, and if the attempted scheduling is successful, the second rate matching method is determined as the target rate matching method; if the attempted scheduling is unsuccessful , the first rate matching mode is determined as the target rate matching mode.
  • step S100 may include steps S110 to S130.
  • step S110 when the trigger condition is satisfied, the UE is attempted to be scheduled based on the second rate matching method; in step S120, when the UE is successfully scheduled based on the second rate matching method, the The second rate matching method is determined as the target rate matching method; in step S130, when the attempted scheduling of the UE based on the second rate matching method is unsuccessful, the first rate matching method is determined as the target rate matching method Describe the target rate matching method.
  • the embodiments of the present disclosure make no special limitation on how to determine whether the attempted scheduling of the UE based on the second rate matching manner succeeds.
  • when the UE can be scheduled based on the second rate matching manner it means that the attempted scheduling of the UE based on the second rate matching manner is successful.
  • the performance of NR when trying to schedule UE based on the second rate matching method is better than the performance of NR when scheduling UE based on the first rate matching method, which means that the UE is trying to schedule based on the second rate matching method success.
  • the attempted scheduling of the UE is successful.
  • NR performance is measured by physical transmission rate.
  • the configuration of the physical transmission rate is realized through the MCS order.
  • the corresponding The second MCS order in the second rate matching mode according to the relationship between the current physical transmission rate in the first rate matching mode and the expected physical transmission rate in the second rate matching mode when the UE is successfully scheduled based on the second rate matching mode, the corresponding The second MCS order in the second rate matching mode.
  • the order determines the second MCS order, and the second MCS order can make the expected physical transmission rate in the second rate matching mode greater than the current physical transmission rate in the first rate matching mode.
  • step S110 may include steps S111 and S112.
  • step S111 according to the first modulation and coding strategy MCS order in the first rate matching mode, determine the second MCS order in the second rate matching mode; in step S112, based on the first In a two-rate matching manner, the UE is attempted to be scheduled by using the second MCS order.
  • the transmission rate corresponding to the second MCS order determined in step S111 is the expected physical transmission rate in the second rate matching mode when the UE is successfully scheduled based on the second rate matching mode.
  • step S111 may include steps S111a and S111b.
  • step S111a a target code rate is determined according to the first MCS order and a gain factor; in step S111b, the second MCS order is determined according to the target code rate.
  • the gain factor enables the UE to be scheduled based on the second rate matching method to obtain gains, that is, the expected physical transmission rate in the second rate matching method can be greater than the physical transmission rate in the first rate matching method.
  • step S100 may further include step S140.
  • step S140 determine the data transmission success rate of the attempted scheduling of the UE based on the second rate matching method; when the data transmission success rate exceeds the success rate threshold value, it means that based on the second rate matching method The attempted scheduling of the UE succeeds; and when the success rate of the data transmission does not exceed the success rate threshold, it indicates that the attempted scheduling of the UE based on the second rate matching method is unsuccessful.
  • a trial scheduling window for UE scheduling based on the second rate matching method is set, and the data transmission success rate of UE trial scheduling within the trial scheduling window is used as the UE trial scheduling window based on the second rate matching method. Scheduled data transmission success rate.
  • the embodiments of the present disclosure make no special limitation on the trial scheduling window.
  • the attempted scheduling window may be that the UE has been scheduled for a predetermined duration; it may also be that the UE has been scheduled for a predetermined number of times.
  • HARQ Hybrid Automatic Repeat reQuest
  • ACK Acknowledge Character
  • step S140 may include steps S141 to S143.
  • step S141 record the number of attempted scheduling of the UE based on the second rate matching method; in step S142, when the number of attempted scheduling reaches a first threshold, determine the number of received ACK signals; In step S143, the data transmission success rate is determined according to the first threshold and the number of received ACK signals.
  • the ratio of the number of received ACK signals to the first threshold can be calculated, and the success rate of data transmission can be determined according to the ratio; a second threshold can also be set, and the ratio of the number of received ACK signals to the second The thresholds are directly compared, and the data transmission success rate is reflected by the relationship between the number of received ACK signals and the second threshold. For example, when the number of received ACK signals exceeds the second threshold, it indicates that the data transmission success rate exceeds the success rate threshold.
  • the second threshold is set according to the first threshold, so that the second threshold meets the data transmission success rate requirement. The embodiments of the present disclosure do not specifically limit this.
  • the process of determining the target rate matching manner is triggered periodically. In any rate matching mode, the process of determining the target rate matching mode is triggered every time the UE is scheduled for a preset period.
  • the communication control method before the step of determining the target rate matching mode of the UE according to the current first rate matching mode of the UE when the trigger condition for switching the rate matching mode of the user equipment UE is met, The communication control method further includes: scheduling the UE based on the first rate matching method; when the scheduling of the UE based on the first rate matching method has lasted for a preset period, indicating the trigger condition Satisfy.
  • the preset period may be characterized as the duration of scheduling the UE; it may also be represented as the number of times the UE is scheduled.
  • the embodiments of the present disclosure make no special limitation on this.
  • the communication control method may further include step S310.
  • step S310 record the number of times the UE is scheduled based on the first rate matching method; when the number of scheduling times reaches a scheduling threshold, it means that the UE has been scheduled based on the first rate matching method Continue for the preset period.
  • the process of determining the target rate matching manner is triggered according to a predetermined event.
  • a process of determining the target rate matching mode is triggered.
  • the predetermined event includes that the MCS order meets the first preset condition in the first rate matching mode.
  • the MCS order meeting the first preset condition may be caused by a change in the MCS order caused by NR performance degradation.
  • the MCS order satisfying the first preset condition there is no special limitation on the MCS order satisfying the first preset condition.
  • the MCS order when the MCS order is lower than the preset threshold, it means that the MCS order satisfies the first preset condition.
  • the MCS order when the MCS order becomes a certain value, it means that the MCS order satisfies the first preset condition.
  • the MCS order decreases by more than a decrease threshold, it indicates that the MCS order meets the first preset condition.
  • the communication control method may further include: scheduling the UE based on the first rate matching method; when the MCS order in the first rate matching method satisfies a first preset condition, indicating the trigger condition Satisfy.
  • the communication control method may further include step S320.
  • step S320 determine the current MCS order in the first rate matching mode; when the current MCS order is lower than the order threshold, it means that the MCS order in the first rate matching mode satisfies the The first preset condition.
  • the communication control method may further include step S330.
  • step S330 determine the descending value of the MCS order in the first rate matching mode; when the descending value exceeds the descending threshold, it means that the MCS order in the first rate matching mode satisfies the first preset conditions.
  • the recommended rate matching mode can be determined according to the channel information of the UE, and the recommended rate matching mode may be the first rate matching mode or the second rate matching mode.
  • the predetermined event includes at least the first rate matching approach being different from the recommended rate matching approach. That is, when the current rate matching method is the first rate matching method, if the recommended rate matching method determined according to the channel information of the UE is the first rate matching method, continue to schedule the UE based on the first rate matching method ; If the recommended rate matching method determined according to the channel information of the UE is not the first rate matching method (for example, the recommended rate matching method is the second rate matching method), trigger the process of determining the target rate matching method.
  • the communication control method may further include step S340.
  • the recommended rate matching method is determined according to the channel information of the UE; when the second preset condition is met, it means that the trigger condition is met, and the second preset condition includes at least the first rate matching method It is different from the recommended rate matching method.
  • the process of determining the target rate matching mode is triggered only when the probability that the recommended rate matching mode is the preferred rate matching mode is relatively high. In some embodiments, whether the recommended rate matching mode determined in step S340 is the preferred rate matching mode is measured by the recommendation credibility.
  • the second preset condition further includes: the recommendation credibility is greater than a credibility threshold.
  • the recommendation credibility when the recommended rate matching mode is the second rate matching mode, triggering the process of determining the target rate matching mode, and finally determining the second rate matching mode as the target rate matching mode, the recommendation credibility is improved; when the recommended The rate matching mode triggers the process of determining the target rate matching mode as the second rate matching mode, and if the second rate matching mode is not finally determined as the target rate matching mode, the recommendation credibility is reduced.
  • the process of determining the target rate matching mode is triggered according to a predetermined event, and when the NR performance in the first rate matching mode is degraded, the trial scheduling of other rate matching modes can be performed in time, and the rate matching mode can be switched when possible.
  • the degradation of NR performance is caused by changes in interference scenarios, the adaptability to different interference scenarios can be improved, and the interference of LTE cells can be further avoided.
  • the communication control method may further include steps S410 and S420 .
  • step S410 the initial rate matching mode of the UE is determined according to the channel information of the UE as the first rate matching mode; in step S420, the initial MCS order is adopted based on the first rate matching mode Scheduling the UE.
  • the present disclosure provides a communication control device, which includes: one or more processors 101; When multiple processors are executed, one or more processors implement any communication control method described in the first aspect of the present disclosure; one or more I/O interfaces 103 are connected between the processors and the memory, configured In order to realize the information interaction between the processor and the memory.
  • the processor 101 is a device with data processing capability, which includes but not limited to a central processing unit (CPU), etc.
  • the memory 102 is a device with data storage capability, which includes but not limited to a random access memory (RAM, more specifically Such as SDRAM, DDR, etc.), read-only memory (ROM), electrified erasable programmable read-only memory (EEPROM), flash memory (FLASH); I/O interface (read-write interface) 103 is connected between processor 101 and memory 102 , can realize information exchange between the processor 101 and the memory 102, which includes but not limited to a data bus (Bus) and the like.
  • RAM random access memory
  • ROM read-only memory
  • EEPROM electrified erasable programmable read-only memory
  • FLASH flash memory
  • I/O interface (read-write interface) 103 is connected between processor 101 and memory 102 , can realize information exchange between the processor 101 and the memory 102, which includes but not limited to a data bus (Bus) and the like.
  • the processor 101 , the memory 102 and the I/O interface 103 are connected to each other through the bus 104 , and are further connected to other components of the computing device.
  • the present disclosure provides a base station, which includes: one or more processors 201; and a memory 202, on which one or more programs are stored.
  • processors 201 When the processor is executed, one or more processors are made to implement any communication control method described in the first aspect of the present disclosure; one or more I/O interfaces 203, connected between the processor and the memory, are configured to implement Information exchange between processor and memory.
  • the processor 201 is a device with data processing capability, which includes but not limited to a central processing unit (CPU), etc.
  • the memory 202 is a device with data storage capability, which includes but not limited to a random access memory (RAM, more specifically Such as SDRAM, DDR, etc.), read-only memory (ROM), electrified erasable programmable read-only memory (EEPROM), flash memory (FLASH); I/O interface (read-write interface) 203 is connected between processor 201 and memory 202 , can realize information exchange between the processor 201 and the memory 202, which includes but not limited to a data bus (Bus) and the like.
  • RAM random access memory
  • ROM read-only memory
  • EEPROM electrified erasable programmable read-only memory
  • FLASH flash memory
  • I/O interface (read-write interface) 203 is connected between processor 201 and memory 202 , can realize information exchange between the processor 201 and the memory 202, which includes but not limited to a data bus (Bus)
  • the processor 201 , the memory 202 and the I/O interface 203 are connected to each other through the bus 204 , and further connected to other components of the computing device.
  • the present disclosure provides a computer-readable medium on which a computer program is stored, and when the program is executed by a processor, any communication control method described in the first aspect of the present disclosure is implemented.
  • the rate matching manner includes RE-level rate matching and symbol-level rate matching.
  • Symbol-level rate matching also includes RB symbol-level rate matching and ZP CSI-RS rate matching.
  • RE-level rate matching means that at LTE CRS positions, NR actively bypasses these positions and does not send PDSCH data to avoid interference.
  • the RE-level rate matching can configure the RateMatchPatternLTE-CRS parameter to the UE through signaling.
  • the offset (v-Shift) of the CRS in the frequency domain is DSS-LTE cell ID mod 6, namely:
  • RateMatchPatternLTE-CRS->v-Shift DSS-LTE_CELL_ID mod 6;
  • RB symbol-level rate matching means that NR does not send data in the corresponding RB symbol.
  • RB symbol-level rate matching can be realized by configuring the related fields of RateMatchPattern, so that its time domain position is on the same symbol as the CRS, and the frequency domain covers all REs, which can be sent through signaling or downlink control information (DCI, Downlink Control Information) to activate.
  • DCI Downlink Control Information
  • ZP CSI-RS rate matching means that if NR configures ZP CSI-RS at the position of LTE CRS, the UE will no longer decode the data at the corresponding position.
  • ZP CSI-RS rate matching can be realized by configuring the related fields of RateMatchPattern, so that its time domain position is on the same symbol as CRS, and the frequency domain covers all REs, which can be activated through signaling or DCI delivery.
  • the configuration of ZP CSI-RS resources under different antenna ports (Antenna Port) is shown in Figure 17.
  • Figure 18 the flow of communication control is shown in Figure 18, which may include:
  • the predetermined event may include: in the first rate matching mode, the MCS order meets the first preset condition, for example, when the MCS order is lower than the preset threshold, it means that the MCS order meets the first preset condition; the MCS order becomes When it is a certain value, it means that the MCS order meets the first preset condition; or when the MCS order drops by more than a drop threshold, it means that the MCS order meets the first preset condition.
  • the predetermined event may also include a non-RE-level rate matching mode (or a symbol-level rate matching mode) in a recommended rate matching mode determined according to UE channel information;
  • the process of trying to schedule UE based on the symbol-level rate matching method includes:
  • the UE Based on the symbol-level rate matching method (or RE-level rate matching method), the UE is attempted to be scheduled;
  • the symbol-level rate matching method (or RE-level rate matching method) is determined as the target rate matching method;
  • the RE-level rate matching method (or symbol-level rate matching method) is determined as the target rate matching method
  • the UE is scheduled based on the target rate matching method.
  • the UE moves from an area without interference from the same-site neighbor cell to an interference area A with interference from the same-site neighbor cell LTE-CELL1.
  • the interference area A has higher interference power.
  • the dynamic adaptive process of multiple rate matching methods includes:
  • the RE level rate matching mode is used as the first rate matching mode, and at this time, the CRS from the DSS-LTE cell is rate matched;
  • the number of scheduling times reaches the scheduling threshold, try to schedule the UE based on the symbol-level rate matching method: obtain the actual number of REs used in the RE-level rate matching method, and calculate the transmission block size according to the first MCS order in the RE-level rate matching method (TBS, Transport Block Size); Obtain the number of REs actually used in the symbol-level rate matching mode, calculate the code rate corresponding to the equal TBS in the symbol-level rate matching mode, multiply the code rate by the gain factor to obtain the target code rate, and according to the target The code rate determines the second MCS order in the symbol-level rate matching mode, and uses the second MCS order to try to schedule the UE;
  • TBS Transport Block Size
  • the number of attempted scheduling reaches the first threshold, obtain the statistical result of the HARQ feedback, and determine the number of received ACK signals, that is, the number of times the feedback is ACK attempted scheduling;
  • the symbol-level rate matching method is determined as the target rate matching method
  • the number of received ACK signals does not exceed the second threshold, it means that the success rate of data transmission attempted by the UE based on the symbol-level rate matching method does not exceed the success rate threshold, and the RE-level rate matching method is determined as the target rate matching method ;
  • UEs are scheduled based on RE-level rate matching.
  • the UE moves from the interference area A with interference from the adjacent cell LTE-CELL 1 of the same station to the interference area B with interference from the LTE cell LTE-CELL 2 not at the same station .
  • the dynamic adaptive process of multiple rate matching methods includes:
  • the number of scheduling times reaches the scheduling threshold, try to schedule the UE based on the RE-level rate matching method: obtain the actual number of REs used in the symbol-level rate matching method, and calculate the transmission block size according to the first MCS order in the symbol-level rate matching method (TBS, Transport Block Size); Obtain the number of REs actually used in the RE-level rate matching mode, calculate the code rate corresponding to the equal TBS in the RE-level rate matching mode, multiply the code rate by the gain factor to obtain the target code rate, and according to the target The code rate determines the second MCS order in the RE-level rate matching mode, and uses the second MCS order to try to schedule the UE;
  • TBS Transport Block Size
  • test_window When the number of attempted scheduling reaches the first threshold (test_window), obtain the statistical result of the HARQ feedback, and determine the number of received ACK signals (ack_num), that is, the number of times the feedback is the attempted scheduling of ACK;
  • ack_ratio is greater than the ratio threshold (ack_threshold), it means that the success rate of data transmission based on the RE-level rate matching method for UE scheduling attempts exceeds the success rate threshold value, and the RE-level rate matching method is determined as the target rate matching method;
  • ack_ratio is not greater than ack_threshold, it means that the success rate of data transmission attempted by the UE based on the RE-level rate matching method does not exceed the success rate threshold, and the symbol-level rate matching method is determined as the target rate matching method;
  • UEs are scheduled based on symbol-level rate matching.
  • the UE moves from the interference area A with interference from the same-site neighbor cell LTE-CELL 1 to an area without the same-site neighbor cell interference.
  • the dynamic adaptive process of multiple rate matching methods includes:
  • the recommended rate matching method determined according to the channel information of the UE is the RE-level rate matching method, and the current recommendation credibility is greater than the credibility threshold, and the UE is attempted to be scheduled based on the RE-level rate matching method: Obtain the symbol-level rate matching method For the actual number of REs used, calculate the transport block size (TBS, Transport Block Size) according to the first MCS order in the symbol-level rate matching mode; obtain the actual number of REs used in the RE-level rate matching mode, and calculate the RE-level rate matching mode Equalize the code rate corresponding to the TBS, multiply the code rate by the gain factor to obtain the target code rate, determine the second MCS order in the RE-level rate matching mode according to the target code rate, and use the second MCS order to try to schedule the UE ;
  • TBS Transport Block Size
  • test_window When the number of attempted scheduling reaches the first threshold (test_window), obtain the statistical result of the HARQ feedback, and determine the number of received ACK signals (ack_num), that is, the number of times the feedback is the attempted scheduling of ACK;
  • ack_ratio is greater than the ratio threshold (ack_threshold), it means that the success rate of data transmission based on the RE-level rate matching method for UE scheduling attempts exceeds the success rate threshold value, and the RE-level rate matching method is determined as the target rate matching method;
  • ack_ratio is not greater than ack_threshold, it means that the success rate of data transmission attempted by the UE based on the RE-level rate matching method does not exceed the success rate threshold, and the symbol-level rate matching method is determined as the target rate matching method;
  • UEs are scheduled based on symbol-level rate matching.
  • the functional modules/units in the system, and the device can be implemented as software, firmware, hardware, and an appropriate combination thereof.
  • the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute.
  • Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit .
  • Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
  • computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media.
  • Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer.
  • communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .
  • Example embodiments have been disclosed herein, and while specific terms have been employed, they are used and should be construed in a general descriptive sense only and not for purposes of limitation. In some instances, it will be apparent to those skilled in the art that features, characteristics and/or elements described in connection with a particular embodiment may be used alone, or may be described in combination with other embodiments, unless expressly stated otherwise. Combinations of features and/or elements. Accordingly, it will be understood by those of ordinary skill in the art that various changes in form and details may be made without departing from the scope of the present disclosure as set forth in the appended claims.

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Abstract

La présente divulgation concerne un procédé de contrôle de communication consistant : lorsqu'une condition de déclenchement pour exécuter une commutation à un mode d'adaptation de débit d'un équipement utilisateur (UE)) est satisfaite, déterminer un mode d'adaptation de débit cible de l'UE selon le présent premier mode d'adaptation de débit de l'UE; et planifier l'UE sur la base du mode d'adaptation de débit cible. La présente invention concerne en outre un appareil de contrôle de communication, une station de base et un support lisible par ordinateur.
PCT/CN2022/085005 2021-06-11 2022-04-02 Procédé et appareil de contrôle de communication, station de base et support lisible par ordinateur WO2022257576A1 (fr)

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US20230055870A1 (en) * 2021-08-23 2023-02-23 Qualcomm Incorporated Crs rate matching request in dss

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CN1878015A (zh) * 2006-07-07 2006-12-13 华为技术有限公司 一种动态调整速率匹配因子的方法
CN106301737A (zh) * 2010-06-24 2017-01-04 诺基亚通信公司 在存在信道状态信息参考信号传输的情况下改变速率匹配模式
WO2021000788A1 (fr) * 2019-07-03 2021-01-07 Qualcomm Incorporated Adaptation de débit permettant un partage de spectre entre différentes technologies d'accès radio
US20210058953A1 (en) * 2019-08-23 2021-02-25 At&T Intellectual Property I, L.P. Demodulation reference signal patterns for dynamic spectrum sharing with increased spectral efficiency for 5g or other next generation network

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CN1878015A (zh) * 2006-07-07 2006-12-13 华为技术有限公司 一种动态调整速率匹配因子的方法
CN106301737A (zh) * 2010-06-24 2017-01-04 诺基亚通信公司 在存在信道状态信息参考信号传输的情况下改变速率匹配模式
WO2021000788A1 (fr) * 2019-07-03 2021-01-07 Qualcomm Incorporated Adaptation de débit permettant un partage de spectre entre différentes technologies d'accès radio
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230055870A1 (en) * 2021-08-23 2023-02-23 Qualcomm Incorporated Crs rate matching request in dss
US11937106B2 (en) * 2021-08-23 2024-03-19 Qualcomm Incorporated CRS rate matching request in DSS

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