WO2022257576A1 - 通信控制方法及装置、基站、计算机可读介质 - Google Patents

通信控制方法及装置、基站、计算机可读介质 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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French (fr)
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张元博
刘蕊
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ZTE Corp
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ZTE Corp
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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

本公开提供一种通信控制方法，包括：当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式；基于所述目标速率匹配方式对所述UE进行调度。本公开还提供一种通信控制装置、一种基站、一种计算机可读介质。

Description

通信控制方法及装置、基站、计算机可读介质
相关申请的交叉引用
本申请要求2021年6月16日提交给中国专利局的第202110652457.0号专利申请的优先权，其全部内容通过引用合并于此。
技术领域
本公开涉及但不限于通信技术领域。
背景技术
5G部署时，为了高效利用频谱资源、节省网络投资、加快网络部署，多数运营商采用长期演进(LTE，Long Term Evolution)与新无线电(NR，New Radio)之间的频谱共享技术，实现从LTE到NR的平滑演进。频谱共享技术通常包括载波级频谱共享技术和动态频谱共享(DSS,Dynamic Spectrum Sharing)技术。其中，DSS技术频谱配置情况可传输时间间隔(TTI，Transmission Time Interval)级改变，能够按需调整LTE与NR所需的频谱资源，频谱利用更加灵活。
但是，不同制式之间的干扰是DSS技术亟待解决的问题。
发明内容
本公开提供一种通信控制方法、一种通信控制装置、一种基站、一种计算机可读介质。
第一方面，本公开提供一种通信控制方法，包括：当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式；基于所述目标速率匹配方式对所述UE进行调度。
第二方面，本公开提供一种通信控制装置，包括：一个或多个处理器；存储器，其上存储有一个或多个程序，当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现 本文所述的任意一种通信控制方法。
第三方面，本公开提供一种基站，包括：一个或多个处理器；存储器，其上存储有一个或多个程序，当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现本文所述的任意一种通信控制方法。
第四方面，本公开提供一种计算机可读介质，其上存储有计算机程序，所述程序被处理器执行时实现本文所述的任意一种通信控制方法。
附图说明
图1是动态频谱共享中干扰的示意图；
图2是根据本公开的一种干扰场景的示意图；
图3是根据本公开的一种通信控制方法的流程图；
图4是根据本公开的一种通信控制方法中部分步骤的流程图；
图5是根据本公开的一种通信控制方法中部分步骤的流程图；
图6是根据本公开的一种通信控制方法中部分步骤的流程图；
图7是根据本公开的一种通信控制方法中部分步骤的流程图；
图8是根据本公开的一种通信控制方法中部分步骤的流程图；
图9是根据本公开的一种通信控制方法中部分步骤的流程图；
图10是根据本公开的一种通信控制方法中部分步骤的流程图；
图11是根据本公开的一种通信控制方法中部分步骤的流程图；
图12是根据本公开的一种通信控制方法中部分步骤的流程图；
图13是根据本公开的一种通信控制方法中部分步骤的流程图；
图14是根据本公开的一种通信控制装置的组成框图；
图15是根据本公开的一种基站的组成框图；
图16是根据本公开的一种计算机可读介质的组成框图；
图17是不同天线端口下零功率信道状态参考信号资源配置的示意图；
图18是根据本公开的通信控制的一种可选实施方式的流程图；
图19是根据本公开的一种干扰场景的示意图；
图20是根据本公开的一种干扰场景的示意图；
图21是根据本公开的一种干扰场景的示意图。
具体实施方式
为使本领域的技术人员更好地理解本公开的技术方案，下面结合附图对本公开提供的通信控制方法、通信控制装置、基站、计算机可读介质进行详细描述。
在下文中将参考附图更充分地描述示例实施方式，但是所述示例实施方式可以以不同形式来体现且不应当被解释为限于本文阐述的实施方式。反之，提供这些实施方式的目的在于使本公开透彻和完整，并将使本领域技术人员充分理解本公开的范围。
在不冲突的情况下，本公开各实施方式及实施方式中的各特征可相互组合。
如本文所使用的，术语“和/或”包括一个或多个相关列举条目的任何和所有组合。
本文所使用的术语仅用于描述特定实施方式，且不意欲限制本公开。如本文所使用的，单数形式“一个”和“该”也意欲包括复数形式，除非上下文另外清楚指出。还将理解的是，当本说明书中使用术语“包括”和/或“由……制成”时，指定存在所述特征、整体、步骤、操作、元件和/或组件，但不排除存在或添加一个或多个其它特征、整体、步骤、操作、元件、组件和/或其群组。
除非另外限定，否则本文所用的所有术语(包括技术和科学术语)的含义与本领域普通技术人员通常理解的含义相同。还将理解，诸如那些在常用字典中限定的那些术语应当被解释为具有与其在相关技术以及本公开的背景下的含义一致的含义，且将不解释为具有理想化或过度形式上的含义，除非本文明确如此限定。
图1中(a)为LTE下行子帧的资源分配情况，示出了小区参考信号(CRS，Cell Reference Signal)占用的资源元素(RE，Resource Element)、物理下行控制信道(PDCCH，Physical Downlink Control Channel)占用的RE、物理下行共享信道(PDSCH，Physical Downlink  Shared Channel)占用的RE等。如图1中(a)所示，CRS在一个资源块(RB，Resource Block)中占用大量的RE，且在全带宽发送。图1中(b)为NR下行子帧的资源分配情况，示出了PDCCH占用的RE、解调参考信号(DM-RS，Demodulation Reference Signal)占用的RE、PDSCH占用的RE，并示出了LTE的CRS与NR的PDSCH存在多个位置的时频资源冲突。在LTE与NR共存时，会引起较大的干扰。
在一些相关技术中，通过针对LTE CRS的速率匹配消除LTE与NR的干扰。但是，其只支持配置一套资源，只能消除与NR小区进行动态频谱共享的LTE小区(称为DSS-LTE小区)的CRS的干扰。在现实应用中，并不限于来自DSS-LTE小区的干扰，如图2所示，NR小区NR-CELL还有来自同站邻区LTE-CELL 1和非同站的LTE小区LTE-CELL 2的干扰。其中，干扰区A来自LTE-CELL 1，具有较高的干扰功率；干扰区B来自LTE-CELL 2，干扰功率相对较低。干扰强度不同，对NR的性能影响也不同。相关技术对LTE-CELL 1、LTE-CELL 2等DSS-LTE小区以外的其他LTE邻区的干扰无法很好的规避。
有鉴于此，第一方面，参照图3，本公开提供一种通信控制方法，可以包括步骤S100和S200。
在步骤S100中，当切换用户设备(UE，User Equipment)的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式；在步骤S200中，基于所述目标速率匹配方式对所述UE进行调度。
在本公开实施方式中，基于速率匹配实现动态频谱共享，并支持多种速率匹配方式的动态自适应。本公开实施方式对支持的速率匹配方式不做特殊限定。例如，支持的速率匹配方式包括RE级速率匹配和符号级速率匹配；符号级速率匹配还可以包括RB符号级速率匹配和零功率信道状态参考信号(ZP CSI-RS，Zero Power Channel State Reference Signal)速率匹配。
需要说明的是，在本公开实施方式中，第一速率匹配方式指UE 当前的速率匹配方式，第二速率匹配方式指UE当前的速率匹配方式以外的其他速率匹配方式中的任意一者，第一速率匹配方式和第二速率匹配方式均不特指某一种具体的速率匹配方式。例如，若UE当前的速率匹配方式为RE级速率匹配，则第一速率匹配方式为RE级速率匹配，第二速率匹配方式为除RE级速率匹配以外的其他任意一种速率匹配方式；若UE当前的速率匹配方式为符号级速率匹配，则第一速率匹配方式为符号级速率匹配，第二速率匹配方式为除符号级速率匹配以外的其他任意一种速率匹配方式。
本公开实施方式对切换UE的速率匹配方式的触发条件不做特殊限定。在一些实施方式中，可以当基于第一速率匹配方式对UE进行调度已持续预设周期时，表示触发条件满足。在一些实施方式中，可以当第一速率匹配方式下的调制与编码策略(MCS，Modulation and Coding Scheme)阶数满足第一预设条件时，表示触发条件满足。在一些实施方式中，可以根据UE的信道信息推荐作为目标速率匹配方式的速率匹配方式，当推荐的结果满足第二预设条件时，表示触发条件满足。
在本公开实施方式中，每当触发条件满足，则触发确定UE的目标速率匹配方式的过程。在一些实施方式中，目标速率匹配方式是能够使当前干扰场景下NR的性能更优的速率匹配方式。在一些实施方式中，目标速率匹配方式是多种速率匹配方式中能够使当前干扰场景下NR的性能最优的一者。相应地，通过步骤S100确定的目标速率匹配方式可能为第一速率匹配方式，也可能为第二速率匹配方式。
本公开实施方式提供的通信控制方法中，每当切换UE的速率匹配方式的触发条件满足，则触发确定UE的目标速率匹配方式的过程，从而确定不同干扰场景下能够使NR的性能最优或更优的速率匹配方式，并基于确定的目标速率匹配方式对UE进行调度，从而能够提高动态频谱共享下NR小区和LTE小区的下行吞吐量，最大化规避各种干扰场景中LTE小区的干扰，提升用户体验。
本公开实施方式对触发条件满足时，如何确定目标速率匹配方式不做特殊限定。在一些实施方式中，每当触发条件满足，即切换 UE的速率匹配方式，即将第二速率匹配方式确定为目标速率匹配方式。在一些实施方式中，每当触发条件满足，判断第一速率匹配方式下NR的性能和第二速率匹配方式下NR的性能，选择能够使NR的性能更优的一者为目标速率匹配方式。在一些实施方式中，每当触发条件满足时，则基于第二速率匹配方式对UE进行尝试调度，若尝试调度成功，则将第二速率匹配方式确定为目标速率匹配方式；若尝试调度不成功，则将第一速率匹配方式确定为目标速率匹配方式。
相应地，在一些实施方式中，参照图4，步骤S100可以包括步骤S110至S130。
在步骤S110中，当所述触发条件满足时，基于第二速率匹配方式对所述UE进行尝试调度；在步骤S120中，当基于第二速率匹配方式对所述UE进行尝试调度成功时，将所述第二速率匹配方式确定为所述目标速率匹配方式；在步骤S130中，当基于第二速率匹配方式对所述UE进行尝试调度不成功时，将所述第一速率匹配方式确定为所述目标速率匹配方式。
本公开实施方式对于如何确定基于第二速率匹配方式对UE进行尝试调度是否成功不做特殊限定。在一些实施方式中，当能够基于第二速率匹配方式对UE进行调度时，表示基于第二速率匹配方式对UE进行尝试调度成功。在一些实施方式中，基于第二速率匹配方式对UE进行尝试调度时NR的性能优于基于第一速率匹配方式对UE进行调度时NR的性能，表示基于第二速率匹配方式对UE进行尝试调度成功。在一些实施方式中，通过基于第二速率匹配方式对UE进行尝试调度，找到出第一速率匹配方式以外的多种速率匹配方式中能够使NR性能最优的一者，表示基于第二速率匹配方式对UE进行尝试调度成功。
在一些实施方式中，NR的性能通过物理传输速率来衡量。物理传输速率的配置通过MCS阶数实现。在一些实施方式中，根据基于第二速率匹配方式对UE进行尝试调度成功时，第一速率匹配方式下当前的物理传输速率与第二速率匹配方式下期望的物理传输速率的关系，确定对应的第二速率匹配方式下的第二MCS阶数。例如，当 第二速率匹配方式下的物理传输速率大于第一速率匹配方式下的物理传输速率表示基于第二速率匹配方式对UE进行尝试调度成功时，根据第一速率匹配方式下的第一MCS阶数确定第二MCS阶数，该第二MCS阶数能够使第二速率匹配方式下期望的物理传输速率大于第一速率匹配方式下当前的物理传输速率。
相应地，在一些实施方式中，参照图5，步骤S110可以包括步骤S111和S112。
在步骤S111中，根据所述第一速率匹配方式下的第一调制与编码策略MCS阶数，确定所述第二速率匹配方式下的第二MCS阶数；在步骤S112中，基于所述第二速率匹配方式，采用所述第二MCS阶数对所述UE进行尝试调度。
需要说明的是，通过步骤S111确定的第二MCS阶数对应的传输速率为基于第二速率匹配方式对UE进行尝试调度成功时，第二速率匹配方式下期望的物理传输速率。
相应地，在一些实施方式中，参照图6，步骤S111可以包括步骤S111a和S111b。
在步骤S111a中，根据所述第一MCS阶数和增益因子确定目标码率；在步骤S111b中，根据所述目标码率确定所述第二MCS阶数。
在本公开实施方式中，增益因子使得基于第二速率匹配方式对UE进行调度获得增益，即，能够使第二速率匹配方式下期望的物理传输速率大于第一速率匹配方式下的物理传输速率。
在一些实施方式中，根据基于第二速率匹配方式对UE进行尝试调度的数据传输成功率确定基于第二速率匹配方式对UE进行尝试调度是否成功。
相应地，在一些实施方式中，参照图7，在步骤S110之后，步骤S100还可以包括步骤S140。
在步骤S140中，确定基于所述第二速率匹配方式对所述UE进行尝试调度的数据传输成功率；当所述数据传输成功率超过成功率门限值时，表示基于第二速率匹配方式对所述UE进行尝试调度成功；以及当所述数据传输成功率未超过所述成功率门限值时，表示基于第 二速率匹配方式对所述UE进行尝试调度不成功。
本公开实施方式对于如何确定对UE进行尝试调度的数据传输成功率不做特殊限定。在一些实施方式中，设定基于第二速率匹配方式对UE进行尝试调度的尝试调度窗口，将尝试调度窗口内对UE进行尝试调度的数据传输成功率作为基于第二速率匹配方式对UE进行尝试调度的数据传输成功率。
本公开实施方式对尝试调度窗口不做特殊限定。例如，尝试调度窗口可以为对UE的调度持续预定时长；还可以为对UE进行了预定次数的调度。本公开实施方式对如何确定尝试调度窗口内对UE进行尝试调度的数据传输成功率也不做特殊限定。例如，获取混合自动重传请求(HARQ,Hybrid Automatic Repeat reQuest)反馈的统计结果，根据接收到的确认字符(ACK，Acknowledge Character)信号确定数据传输成功率。
相应地，在一些实施方式中，参照图8，步骤S140可以包括步骤S141至S143。
在步骤S141中，记录基于第二速率匹配方式对所述UE进行尝试调度的尝试调度次数；在步骤S142中，当所述尝试调度次数达到第一阈值时，确定接收到的ACK信号的数量；在步骤S143中，根据所述第一阈值和接收到的ACK信号的数量确定所述数据传输成功率。
在本公开实施方式中，可以计算接收到的ACK信号的数量与第一阈值的比值，根据该比值确定数据传输成功率；也可以设置第二阈值，将接收到的ACK信号的数量与第二阈值直接进行比较，用接收到的ACK信号的数量与第二阈值的关系反映数据传输成功率。例如，当接收到的ACK信号的数量超过第二阈值时，表示数据传输成功率超过成功率门限值。本公开实施方式对此不做特殊限定。在一些实施方式中，根据第一阈值设置第二阈值，以使第二阈值满足数据传输成功率需求。本公开实施方式对此也不做特殊限定。
在一些实施方式中，周期性触发确定目标速率匹配方式的过程。在任意一种速率匹配方式下，对UE进行调度每持续预设周期，则触 发一次确定目标速率匹配方式的过程。
相应地，在一些实施方式中，在当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤之前，所述通信控制方法还包括：基于所述第一速率匹配方式对所述UE进行调度；当基于所述第一速率匹配方式对所述UE进行调度已持续预设周期时，表示所述触发条件满足。
在本公开实施方式中，预设周期可以表征为对UE进行调度持续的时间长度；也可以表征为对UE进行调度的调度次数。本公开实施方式对此不做特殊限定。
相应地，在一些实施方式中，参照图9，在步骤S100之前，所述通信控制方法还可以包括步骤S310。
在步骤S310中，记录基于所述第一速率匹配方式对所述UE进行调度的调度次数；当所述调度次数达到调度阈值时，表示基于所述第一速率匹配方式对所述UE进行调度已持续所述预设周期。
在一些实施方式中，根据预定事件触发确定目标速率匹配方式的过程。在任意一种速率匹配方式下，每发生一次预定事件，则触发一次确定目标速率匹配方式的过程。
在一些实施方式中，预定事件包括第一速率匹配方式下，MCS阶数满足第一预设条件。在一些实施方式中，MCS阶数满足第一预设条件可以是由NR性能下降引起的MCS阶数变化导致的。
本公开实施方式对MCS阶数满足第一预设条件不做特殊限定。在一些实施方式中，MCS阶数低于预设阈值时，表示MCS阶数满足第一预设条件。在一些实施方式中，MCS阶数变成某一特定值时，表示MCS阶数满足第一预设条件。在一些实施方式中，MCS阶数下降超过下降阈值时，表示MCS阶数满足第一预设条件。
相应地，在一些实施方式中，在当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤之前，所述通信控制方法还可以包括：基于所述第一速率匹配方式对所述UE进行调度；当所述第 一速率匹配方式下的MCS阶数满足第一预设条件时，表示所述触发条件满足。
相应地，在一些实施方式中，参照图10，在步骤S100之前，所述通信控制方法还可以包括步骤S320。
在步骤S320中，确定所述第一速率匹配方式下的当前MCS阶数；当所述当前MCS阶数低于阶数阈值时，表示所述第一速率匹配方式下的MCS阶数满足所述第一预设条件。
相应地，在一些实施方式中，参照图11，在步骤S100之前，所述通信控制方法还可以包括步骤S330。
在步骤S330中，确定所述第一速率匹配方式下的MCS阶数的下降值；当所述下降值超过下降阈值时，表示所述第一速率匹配方式下的MCS阶数满足所述第一预设条件。
在一些实施方式中，根据UE的信道信息能够确定推荐速率匹配方式，推荐速率匹配方式可能是第一速率匹配方式，也可能是第二速率匹配方式。在一些实施方式中，预定事件至少包括第一速率匹配方式不同于推荐速率匹配方式。即，在当前的速率匹配方式为第一速率匹配方式的情况下，若根据UE的信道信息确定的推荐速率匹配方式是第一速率匹配方式时，则继续基于第一速率匹配方式对UE进行调度；若根据UE的信道信息确定的推荐速率匹配方式不是第一速率匹配方式(例如推荐速率匹配方式为第二速率匹配方式)时，则触发确定目标速率匹配方式的过程。
相应地，在一些实施方式中，参照图12，在步骤S100之前，所述通信控制方法还可以包括步骤S340。
在步骤S340中，根据所述UE的信道信息确定推荐速率匹配方式；当第二预设条件满足时，表示所述触发条件满足，所述第二预设条件至少包括所述第一速率匹配方式不同于所述推荐速率匹配方式。
在一些实施方式中，当根据UE的信道信息确定的推荐速率匹配方式不是第一速率匹配方式(例如推荐速率匹配方式为第二速率匹配方式)时，还需进一步确定步骤S340中确定的推荐速率匹配方式是否为优选的速率匹配方式，只有推荐速率匹配方式是优选的速率匹配 方式的概率较大时，才触发确定目标速率匹配方式的过程。在一些实施方式中，用推荐可信度衡量步骤S340中确定的推荐速率匹配方式是否为优选的速率匹配方式。
相应地，在一些实施方式中，所述第二预设条件还包括：推荐可信度大于可信度阈值。
在一些实施方式中，当推荐速率匹配方式为第二速率匹配方式触发确定目标速率匹配方式的过程，最终将第二速率匹配方式确定为目标速率匹配方式时，则提升推荐可信度；当推荐速率匹配方式为第二速率匹配方式触发确定目标速率匹配方式的过程，最终未将第二速率匹配方式确定为目标速率匹配方式时，则降低推荐可信度。
需要说明的是，根据预定事件触发确定目标速率匹配方式的过程，能够在第一速率匹配方式下NR性能下降时，及时进行其他速率匹配方式的尝试调度，并在可能时切换速率匹配方式。当NR性能下降是由干扰场景变化引起时，能够提高对不同干扰场景的适应性，进一步规避LTE小区的干扰。
在一些实施方式中，参照图13，在步骤S100之前，所述通信控制方法还可以包括步骤S410和S420。
在步骤S410中，根据所述UE的信道信息确定所述UE的初始速率匹配方式，作为所述第一速率匹配方式；在步骤S420中，基于所述第一速率匹配方式，采用初始MCS阶数对所述UE进行调度。
第二方面，参照图14，本公开提供一种通信控制装置，其包括：一个或多个处理器101；存储器102，其上存储有一个或多个程序，当一个或多个程序被一个或多个处理器执行时，使得一个或多个处理器实现本公开第一方面所述的任意一种通信控制方法；一个或多个I/O接口103，连接在处理器与存储器之间，配置为实现处理器与存储器的信息交互。
其中，处理器101为具有数据处理能力的器件，其包括但不限于中央处理器(CPU)等；存储器102为具有数据存储能力的器件，其包括但不限于随机存取存储器(RAM，更具体如SDRAM、DDR等)、只读存储器(ROM)、带电可擦可编程只读存储器(EEPROM)、 闪存(FLASH)；I/O接口(读写接口)103连接在处理器101与存储器102间，能实现处理器101与存储器102的信息交互，其包括但不限于数据总线(Bus)等。
在一些实施方式中，处理器101、存储器102和I/O接口103通过总线104相互连接，进而与计算设备的其它组件连接。
第三方面，参照图15，本公开提供一种基站，其包括：一个或多个处理器201；存储器202，其上存储有一个或多个程序，当一个或多个程序被一个或多个处理器执行时，使得一个或多个处理器实现本公开第一方面所述的任意一种通信控制方法；一个或多个I/O接口203，连接在处理器与存储器之间，配置为实现处理器与存储器的信息交互。
其中，处理器201为具有数据处理能力的器件，其包括但不限于中央处理器(CPU)等；存储器202为具有数据存储能力的器件，其包括但不限于随机存取存储器(RAM，更具体如SDRAM、DDR等)、只读存储器(ROM)、带电可擦可编程只读存储器(EEPROM)、闪存(FLASH)；I/O接口(读写接口)203连接在处理器201与存储器202间，能实现处理器201与存储器202的信息交互，其包括但不限于数据总线(Bus)等。
在一些实施方式中，处理器201、存储器202和I/O接口203通过总线204相互连接，进而与计算设备的其它组件连接。
第四方面，参照图16，本公开提供一种计算机可读介质，其上存储有计算机程序，程序被处理器执行时实现本公开第一方面所述的任意一种通信控制方法。
为了使本领域技术人员能够更清楚地理解本公开提供的技术方案，下面通过示例性的实施方式，对本公开提供的技术方案进行详细说明：
在以下实施方式中，速率匹配方式包括RE级速率匹配和符号级速率匹配。符号级速率匹配还包括RB符号级速率匹配和ZP CSI-RS速率匹配。
RE级速率匹配是指，在LTE CRS位置，NR主动绕开这些位置 不发送PDSCH数据，避免干扰。RE级速率匹配可以通过信令配置RateMatchPatternLTE-CRS参数给UE。作为一种示例性的实施方式，CRS在频域的偏移(v-Shift)为DSS-LTE小区ID mod 6，即：
RateMatchPatternLTE-CRS->v-Shift＝DSS-LTE_CELL_ID mod 6；
这种配置下，能够保证DSS-LTE小区的CRS不对NR PDSCH造成干扰。
RB符号级速率匹配是指，NR在对应的RB符号不发送数据。RB符号级速率匹配可以通过配置RateMatchPattern相关字段实现，令其时域位置与CRS在相同的符号上，频域上覆盖所有RE，可以通过信令下发或下行链路控制信息(DCI，Downlink Control Information)下发的方式激活。
ZP CSI-RS速率匹配是指，NR在LTE CRS的位置配置ZP CSI-RS，则UE不再解对应位置的数据。ZP CSI-RS速率匹配可以通过配置RateMatchPattern相关字段实现，令其时域位置与CRS在相同的符号上，频域上覆盖所有RE，可以通过信令下发或DCI下发的方式激活。不同天线端口(Antenna Port)下ZP CSI-RS资源的配置如图17所示。在图17中，LTE 2Port下，配置3个非周期ZP CSI-RS资源，3个非周期ZP CSI-RS资源分别对应符号4、7、11；LTE 4Port下，配置4个非周期ZP CSI-RS资源,4个非周期ZP CSI-RS资源分别对应符号4、7、8、11。
第一实施方式
在本实施方式中，通信控制的流程如图18所示，可以包括：
系统启动；
根据UE的信道信息将RE级速率匹配方式(或符号级速率匹配方式)作为第一速率匹配方式；
根据UE的信道信息确定RE级速率匹配方式(或符号级速率匹配方式)下的初始MCS阶数，基于RE级速率匹配方式(或符号级速率匹配方式)对UE进行调度；
当对所述UE进行调度已持续预设周期时，触发基于符号级速率匹配方式(或RE级速率匹配方式)对UE进行尝试调度的流程；
当发生预定事件时，触发基于符号级速率匹配方式(或RE级速率匹配方式)对UE进行尝试调度的流程。预定事件可以包括：第一速率匹配方式下，MCS阶数满足第一预设条件，例如，MCS阶数低于预设阈值时，表示MCS阶数满足第一预设条件；MCS阶数变成某一特定值时，表示MCS阶数满足第一预设条件；或MCS阶数下降超过下降阈值时，表示MCS阶数满足第一预设条件。预定事件还可以包括根据UE的信道信息确定的推荐速率匹配方式非RE级速率匹配方式(或符号级速率匹配方式)；
基于符号级速率匹配方式(或RE级速率匹配方式)对UE进行尝试调度的流程包括：
基于符号级速率匹配方式(或RE级速率匹配方式)对UE进行尝试调度；
当基于符号级速率匹配方式(或RE级速率匹配方式)对UE进行尝试调度的数据传输成功率超过成功率门限值，将符号级速率匹配方式(或RE级速率匹配方式)确定为目标速率匹配方式；
当基于符号级速率匹配方式(或RE级速率匹配方式)对UE进行尝试调度的数据传输成功率未超过成功率门限值，将RE级速率匹配方式(或符号级速率匹配方式)确定为目标速率匹配方式；
基于目标速率匹配方式对UE进行调度。
第二实施方式
如图19所示，在本实施方式中，UE从无同站邻区干扰的区域向有来自同站邻区LTE-CELL1的干扰的干扰区A移动。其中，干扰区A具有较高的干扰功率。在此场景下，多种速率匹配方式的动态自适应流程包括：
系统启动；
根据UE的信道信息将RE级速率匹配方式作为第一速率匹配方式，此时，来自DSS-LTE小区的CRS被速率匹配；
根据UE的信道信息确定RE级速率匹配方式下的初始MCS阶数，基于RE级速率匹配方式对UE进行调度；
当调度次数达到调度阈值时，基于符号级速率匹配方式对UE 进行尝试调度：获取RE级速率匹配方式下实际使用的RE数，根据RE级速率匹配方式下的第一MCS阶数计算传输块大小(TBS，Transport Block Size)；获取符号级速率匹配方式下实际使用的RE数，计算符号级速率匹配方式下相等TBS对应的码率，将该码率乘以增益因子得到目标码率，根据目标码率确定符号级速率匹配方式下的第二MCS阶数，采用第二MCS阶数对UE进行尝试调度；
当尝试调度次数达到第一阈值时，获取HARQ反馈的统计结果，确定接收到的ACK信号数量，即反馈为ACK的尝试调度的次数；
若接收到的ACK信号数量超过第二阈值，表示基于符号级速率匹配方式对UE进行尝试调度的数据传输成功率超过成功率门限值，将符号级速率匹配方式确定为目标速率匹配方式；
基于符号级速率匹配方式对UE进行调度；
若接收到的ACK信号数量未超过第二阈值，表示基于符号级速率匹配方式对UE进行尝试调度的数据传输成功率未超过成功率门限值，将RE级速率匹配方式确定为目标速率匹配方式；
基于RE级速率匹配方式对UE进行调度。
第三实施方式
如图20所示，在本实施方式中，UE从有来自同站邻区LTE-CELL 1的干扰的干扰区A向有来自非同站的LTE小区LTE-CELL 2的干扰的干扰区B移动。在此场景下，多种速率匹配方式的动态自适应流程包括：
系统启动；
根据UE的信道信息将符号级速率匹配方式作为第一速率匹配方式；
根据UE的信道信息确定符号级速率匹配方式下的初始MCS阶数，基于符号级速率匹配方式对UE进行调度；
当调度次数达到调度阈值时，基于RE级速率匹配方式对UE进行尝试调度：获取符号级速率匹配方式下实际使用的RE数，根据符号级速率匹配方式下的第一MCS阶数计算传输块大小(TBS，Transport Block Size)；获取RE级速率匹配方式下实际使用的RE 数，计算RE级速率匹配方式下相等TBS对应的码率，将该码率乘以增益因子得到目标码率，根据目标码率确定RE级速率匹配方式下的第二MCS阶数，采用第二MCS阶数对UE进行尝试调度；
当尝试调度次数达到第一阈值(test_window)时，获取HARQ反馈的统计结果，确定接收到的ACK信号数量(ack_num)，即反馈为ACK的尝试调度的次数；
计算ACK比例：ack_ratio＝ack_num/test_window；
若ack_ratio大于比例阈值(ack_threshold)，表示基于RE级速率匹配方式对UE进行尝试调度的数据传输成功率超过成功率门限值，将RE级速率匹配方式确定为目标速率匹配方式；
基于RE级速率匹配方式对UE进行调度；
若ack_ratio不大于ack_threshold，表示基于RE级速率匹配方式对UE进行尝试调度的数据传输成功率未超过成功率门限值，将符号级速率匹配方式确定为目标速率匹配方式；
基于符号级速率匹配方式对UE进行调度。
第四实施方式
如图21所示，在本实施方式中，UE从有来自同站邻区LTE-CELL 1的干扰的干扰区A向无同站邻区干扰的区域移动。在此场景下，多种速率匹配方式的动态自适应流程包括：
系统启动；
根据UE的信道信息将符号级速率匹配方式作为第一速率匹配方式；
根据UE的信道信息确定符号级速率匹配方式下的初始MCS阶数，基于符号级速率匹配方式对UE进行调度；
根据UE的信道信息确定的推荐速率匹配方式为RE级速率匹配方式，且当前的推荐可信度大于可信度阈值，基于RE级速率匹配方式对UE进行尝试调度：获取符号级速率匹配方式下实际使用的RE数，根据符号级速率匹配方式下的第一MCS阶数计算传输块大小(TBS，Transport Block Size)；获取RE级速率匹配方式下实际使用的RE数，计算RE级速率匹配方式下相等TBS对应的码率，将该 码率乘以增益因子得到目标码率，根据目标码率确定RE级速率匹配方式下的第二MCS阶数，采用第二MCS阶数对UE进行尝试调度；
当尝试调度次数达到第一阈值(test_window)时，获取HARQ反馈的统计结果，确定接收到的ACK信号数量(ack_num)，即反馈为ACK的尝试调度的次数；
计算ACK比例：ack_ratio＝ack_num/test_window；
若ack_ratio大于比例阈值(ack_threshold)，表示基于RE级速率匹配方式对UE进行尝试调度的数据传输成功率超过成功率门限值，将RE级速率匹配方式确定为目标速率匹配方式；
将推荐可信度按比例增大；
基于RE级速率匹配方式对UE进行调度；
若ack_ratio不大于ack_threshold，表示基于RE级速率匹配方式对UE进行尝试调度的数据传输成功率未超过成功率门限值，将符号级速率匹配方式确定为目标速率匹配方式；
将推荐可信度按比例减小；
基于符号级速率匹配方式对UE进行调度。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其它数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其它存储器技术、 CD-ROM、数字多功能盘(DVD)或其它光盘存储、磁盒、磁带、磁盘存储或其它磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其它的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其它传输机制之类的调制数据信号中的其它数据，并且可包括任何信息递送介质。
本文已经公开了示例实施方式，并且虽然采用了具体术语，但它们仅用于并仅应当被解释为一般说明性含义，并且不用于限制的目的。在一些实例中，对本领域技术人员显而易见的是，除非另外明确指出，否则可单独使用与特定实施方式相结合描述的特征、特性和/或元素，或可与其它实施方式相结合描述的特征、特性和/或元件组合使用。因此，本领域技术人员将理解，在不脱离由所附的权利要求阐明的本公开的范围的情况下，可进行各种形式和细节上的改变。

Claims (17)

  1. 一种通信控制方法，包括：
    当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式；
    基于所述目标速率匹配方式对所述UE进行调度。
  2. 根据权利要求1所述的通信控制方法，其中，当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤包括：
    当所述触发条件满足时，基于第二速率匹配方式对所述UE进行尝试调度；
    当基于第二速率匹配方式对所述UE进行尝试调度成功时，将所述第二速率匹配方式确定为所述目标速率匹配方式；
    当基于第二速率匹配方式对所述UE进行尝试调度不成功时，将所述第一速率匹配方式确定为所述目标速率匹配方式。
  3. 根据权利要求2所述的通信控制方法，其中，基于第二速率匹配方式对所述UE进行尝试调度的步骤包括：
    根据所述第一速率匹配方式下的第一调制与编码策略MCS阶数，确定所述第二速率匹配方式下的第二MCS阶数；
    基于所述第二速率匹配方式，采用所述第二MCS阶数对所述UE进行尝试调度。
  4. 根据权利要求3所述的通信控制方法，其中，根据所述第一速率匹配方式下的第一MCS阶数，确定所述第二速率匹配方式下的第二MCS阶数的步骤包括：
    根据所述第一MCS阶数和增益因子确定目标码率；
    根据所述目标码率确定所述第二MCS阶数。
  5. 根据权利要求2至4中任意一项所述的通信控制方法，其中，当所述触发条件满足时，基于第二速率匹配方式对所述UE进行尝试调度的步骤之后，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤还包括：
    确定基于所述第二速率匹配方式对所述UE进行尝试调度的数据传输成功率；
    当所述数据传输成功率超过成功率门限值时，表示基于第二速率匹配方式对所述UE进行尝试调度成功；
    当所述数据传输成功率未超过所述成功率门限值时，表示基于第二速率匹配方式对所述UE进行尝试调度不成功。
  6. 根据权利要求5所述的通信控制方法，其中，确定基于所述第二速率匹配方式对所述UE进行尝试调度的数据传输成功率的步骤包括：
    记录基于第二速率匹配方式对所述UE进行尝试调度的尝试调度次数；
    当所述尝试调度次数达到第一阈值时，确定接收到的确认字符ACK信号的数量；
    根据所述第一阈值和接收到的ACK信号的数量确定所述数据传输成功率。
  7. 根据权利要求1至4中任意一项所述的通信控制方法，其中，在当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤之前，所述通信控制方法还包括：
    基于所述第一速率匹配方式对所述UE进行调度；
    当基于所述第一速率匹配方式对所述UE进行调度已持续预设周期时，表示所述触发条件满足。
  8. 根据权利要求7所述的通信控制方法，其中，在当切换用户 设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤之前，所述通信控制方法还包括：
    记录基于所述第一速率匹配方式对所述UE进行调度的调度次数；
    当所述调度次数达到调度阈值时，表示基于所述第一速率匹配方式对所述UE进行调度已持续所述预设周期。
  9. 根据权利要求1至4中任意一项所述的通信控制方法，其中，在当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤之前，所述通信控制方法还包括：
    基于所述第一速率匹配方式对所述UE进行调度；
    当所述第一速率匹配方式下的MCS阶数满足第一预设条件时，表示所述触发条件满足。
  10. 根据权利要求9所述的通信控制方法，其中，在当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤之前，所述通信控制方法还包括：
    确定所述第一速率匹配方式下的当前MCS阶数；
    当所述当前MCS阶数低于阶数阈值时，表示所述第一速率匹配方式下的MCS阶数满足所述第一预设条件。
  11. 根据权利要求9所述的通信控制方法，其中，在当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤之前，所述通信控制方法还包括：
    确定所述第一速率匹配方式下的MCS阶数的下降值；
    当所述下降值超过下降阈值时，表示所述第一速率匹配方式下 的MCS阶数满足所述第一预设条件。
  12. 根据权利要求1至4中任意一项所述的通信控制方法，其中，在当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤之前，所述通信控制方法还包括：
    根据所述UE的信道信息确定推荐速率匹配方式；
    当第二预设条件满足时，表示所述触发条件满足，所述第二预设条件至少包括所述第一速率匹配方式不同于所述推荐速率匹配方式。
  13. 根据权利要求12所述的通信控制方法，其中，所述第二预设条件还包括：
    推荐可信度大于可信度阈值。
  14. 根据权利要求1至4中任意一项所述的通信控制方法，其中，在当切换用户设备UE的速率匹配方式的触发条件满足时，根据所述UE当前的第一速率匹配方式，确定所述UE的目标速率匹配方式的步骤之前，所述通信控制方法还包括：
    根据所述UE的信道信息确定所述UE的初始速率匹配方式，作为所述第一速率匹配方式；
    基于所述第一速率匹配方式，采用初始MCS阶数对所述UE进行调度。
  15. 一种通信控制装置，包括：
    一个或多个处理器；
    存储器，其上存储有一个或多个程序，当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现根据权利要求1至14中任意一项所述的通信控制方法。
  16. 一种基站，包括：
    一个或多个处理器；
    存储器，其上存储有一个或多个程序，当所述一个或多个程序被所述一个或多个处理器执行时，使得所述一个或多个处理器实现根据权利要求1至14中任意一项所述的通信控制方法。
  17. 一种计算机可读介质，其上存储有计算机程序，所述程序被处理器执行时实现根据权利要求1至14中任意一项所述的通信控制方法。
PCT/CN2022/085005 2021-06-11 2022-04-02 通信控制方法及装置、基站、计算机可读介质 Ceased WO2022257576A1 (zh)

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