WO2014190481A1 - Procédé, dispositif et équipement d'utilisateur pour déterminer la longueur d'un bloc de données - Google Patents

Procédé, dispositif et équipement d'utilisateur pour déterminer la longueur d'un bloc de données Download PDF

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Publication number
WO2014190481A1
WO2014190481A1 PCT/CN2013/076310 CN2013076310W WO2014190481A1 WO 2014190481 A1 WO2014190481 A1 WO 2014190481A1 CN 2013076310 W CN2013076310 W CN 2013076310W WO 2014190481 A1 WO2014190481 A1 WO 2014190481A1
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WO
WIPO (PCT)
Prior art keywords
reference time
time period
historical reference
power
historical
Prior art date
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PCT/CN2013/076310
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English (en)
Chinese (zh)
Inventor
赵悦莹
王宗杰
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201380000555.XA priority Critical patent/CN104365158B/zh
Priority to PCT/CN2013/076310 priority patent/WO2014190481A1/fr
Publication of WO2014190481A1 publication Critical patent/WO2014190481A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/226—TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC

Definitions

  • the present application relates to a method, a device, and a user equipment for determining a data block length.
  • the power-based scheduling method based on power adjustment is widely used in low-speed communication services.
  • it when it is applied to high-speed communication services, it cannot be satisfied due to user self-interference (such as inter-path interference).
  • the user's demodulation performance can only achieve the effect of ensuring user demodulation performance by adjusting the target signal-to-noise ratio SIRtarget by the outer loop.
  • the specific process is as follows:
  • the network calculates the scheduling grant of the E-DCH Dedicated Physical Data Channel (E-DPDCH) based on the Dedicated Physical Control CHannel (DPCCH), that is, the transmit power of the E-DPDCH relative to the DPCCH. According to this information, the block length of the E-DPDCH can be converted. Due to the authorization delay of the network, the scheduling grant needs to be applied after 4 Transmission Time Intervals (TTIs).
  • TTIs Transmission Time Intervals
  • the Universal Mobile Telecommunications System (UMTS) has an outer loop power control cycle of the order of 100ms. Specifically, the Radio Network Controller (RNC) calculates the data error rate (BLOCK) of the previous cycle, and determines the SIR target starting from the next cycle according to a certain power control algorithm. The amount of power that the UE needs to transmit is also determined.
  • the UE needs to raise the power at the start time of the next transmitted TTI.
  • the network determines that the UE can send a larger grant according to the DPCCH estimation before the 4 TTIs.
  • the combination of the two will cause the UE to actually transmit a power greater than its truly available low-noise boost ROT load resource, and the larger power cannot be guaranteed.
  • the bit error rate BLER may be high, causing the transmit power. Further elevation, resulting in a low noise uplift overshoot ROT overshoot.
  • NSN proposes an SINR-based uplink scheduling method based on signal-to-noise ratio smoothing in the uplink enhancement problem.
  • the network will give the UE a scheduling grant based on the power, but the UE really
  • the scheduling block length needs to be determined according to the current actual measured SINR.
  • SINR difference the difference between the signal to interference and noise ratio (SINR difference, SD).
  • SINR difference SD is notified to the UE through the downlink physical control channel to determine the data block length actually scheduled by the UE.
  • the SD information is frequently transmitted by using the downlink physical control channel, which causes the process of transmitting the SD information to occupy the downlink channel code resources and power, and reduces the communication efficiency of the downlink channel.
  • the technical problem to be solved by the present application is to provide a method for determining the length of a data block, a device, and a user equipment, which are used to solve the problem of the process of transmitting SD information due to the need to frequently use the downlink physical control channel to transmit SD information in the prior art.
  • the downlink channel code resources and power reduce the communication efficiency of the downlink channel.
  • a first aspect of the embodiments of the present invention provides a data block length determining method, including: acquiring a preset number of historical reference time segments, and calculating reference power of each historical reference time segment, where each historical reference time segment length Similarly, the preset number is not less than 2;
  • the preset number of historical reference time periods includes: a second historical reference time period adjacent to the current transmission time interval, and The second historical reference time period is adjacent to the first historical reference time period.
  • the determining, by the reference power of the respective historical reference time segments, the adjusting parameter includes:
  • the ratio is determined to be the adjustment parameter.
  • the preset number of historical reference time segments includes:
  • N consecutive historical reference time periods, where N is a natural number greater than 2.
  • the determining, by the reference power of the respective historical reference time segments, the adjusting parameter includes:
  • the average is determined to be the adjustment parameter.
  • the power value of the historical reference time period includes: an average signal to noise ratio of the M time slots included in the historical reference time period, or an average Power, where M is a natural number greater than zero.
  • a second aspect of the embodiments of the present invention provides a data block length determining apparatus, including:
  • a reference power acquisition module configured to acquire a reference power of each historical reference time period in a preset reference number of historical reference time segments, wherein each of the historical reference time segments has the same length, and the preset number is not less than 2;
  • an adjustment parameter determining module configured to determine an adjustment parameter according to the reference power of each of the historical reference time periods
  • An adjustment module configured to adjust, by using the adjustment parameter, a target power in a current transmission time interval
  • the target data block length determining module is configured to obtain a data block length corresponding to the adjusted target power, and determine the target data block length.
  • the adjusting parameter determining module includes: a first ratio obtaining unit, configured to acquire a reference power of the first historical reference time period, and the a ratio of reference powers of the second historical reference time period;
  • the first determining unit is configured to determine that the ratio is the adjustment parameter.
  • the adjusting parameter determining module includes: a second acquiring unit, respectively acquiring, among the N historical reference time segments, each historical reference time segment adjacent thereto The ratio of the reference power of a historical reference time period, where N is a natural number greater than 2;
  • an average value calculating unit configured to calculate an average value of a ratio of reference powers of the respective historical reference time segments and a subsequent historical reference time period adjacent thereto;
  • a second determining unit configured to determine the average value as the adjustment parameter.
  • a third aspect of the embodiments of the present invention provides a further data block length determining apparatus, including:
  • a first processor configured to acquire a preset number of historical reference time segments, and calculate a reference power of each historical reference time segment, where each of the historical reference time segments has the same length, and the preset number is not less than 2, according to The reference power of each historical reference time period determines an adjustment parameter, and the target power in the current transmission time interval is adjusted by using the adjustment parameter, and the data block length corresponding to the adjusted target power is obtained, and is determined as a target.
  • Data block length
  • a memory for storing the program in the first processor and the data generated by the program running in the first processor.
  • a fourth aspect of the embodiments of the present invention provides a user equipment, including: a data block length determining apparatus according to a second aspect of the embodiments of the present invention.
  • the determining process of the target data block length is that the user terminal obtains an adjustment parameter according to the reference power of the historical reference time period of the user, and uses the parameter to adjust the target power.
  • FIG. 1 is a flowchart of a method for determining a data block length according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of another method for determining a data block length according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a data block length determining apparatus according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of an adjusting parameter determining module according to an embodiment of the present application;
  • FIG. 6 is a schematic structural diagram of another adjustment parameter determining module disclosed in the embodiment of the present application.
  • the flow of a data block length determining method disclosed in the present application is as shown in FIG. 1, and may include the following steps:
  • Step S1 Obtain a preset historical reference time period, and calculate reference power of each historical reference time period, where each historical reference time period has the same length;
  • the UE achieves the purpose of the present application based on a preset number of historical reference time segments of the same length.
  • the historical reference time period may include M time slots, where M is a natural number greater than 0. Obtain the reference power of these historical reference time periods, that is, obtain the average signal to noise ratio of the historical reference time period, or the average power. If the historical reference time period includes multiple time slots, the average signal to noise ratio or average power of the historical time period obtained is the average signal to noise ratio or average power of all the time slots included in the historical time period. If there is only one time slot in the historical reference time period, the average signal-to-noise ratio or average power of the historical time period obtained is the signal-to-noise ratio or power of the time slot.
  • the number of the historical reference time segments is not less than 2, and the specific time may be set according to actual conditions, and the length of the historical reference time segment may also be set according to actual conditions.
  • Step S12 Determine an adjustment parameter according to reference power of each historical reference time period;
  • the adjustment parameter is related to the historical reference time period.
  • the reference power of the adjacent historical reference time period is used to determine the change trend of the target power, such as increasing or decreasing.
  • the specific manner may be determined by the ratio of the adjacent historical reference time segments, or may be determined by the adjacent historical reference time period. The difference is determined. If it is determined by the ratio, the adjustment parameter is a scale value ⁇ , and K is an integer not equal to 0.
  • the difference T between the reference power of the first historical reference period minus the reference power of the second historical reference period can be calculated, and if T is 0, It means that there is no change. If T is greater than 0, it means that the target power becomes smaller, and vice versa. Similarly, if the reference power of the second historical reference period is subtracted from the reference power of the first historical reference period, the result is reversed.
  • Step S13 Adjust, by using the adjustment parameter, a target power SIR target in a current transmission time interval
  • the target power in the current transmission time interval ( ⁇ ) in this embodiment refers to the dedicated physical data channel (E-DCH Dedicated Physical Data Channel, E-referred to as the current ⁇ ) determined according to the existing protocol.
  • Authorization of DPDCH that is, power.
  • the specific adjustment scheme adopts different methods according to different adjustment parameters. It is assumed that two adjacent historical reference time segments are sequentially defined in chronological order as a first historical reference time segment and a second historical reference time segment, and the ratio of the first historical reference time segment reference power to the second historical reference time segment reference power is K, if K is greater than 1, it means that the change trend of target power becomes smaller with time. At this time, K should be multiplied by the target power within the current transmission time interval to ensure that the target power does not continue to decrease. So as to keep it steady. If the ratio of the reference power of the second historical reference period to the reference power of the first historical reference period is K, if K is greater than 1, the trend of the target power is increased, and at this time, multiply by 1/K.
  • the target power within the current transmission time interval The situation is similar when K is other values. I will not repeat them here. As long as the purpose of the adjustment is to ensure that the target power is stable. Similarly, if it is determined by the difference, the principle is the same as above, and the difference T between the reference power of the first historical reference period minus the reference power of the second historical reference period is calculated, and if T is greater than 0, the target power is The trend of change is getting smaller. At this time, the target power within the current transmission time interval should be added by T to ensure that the target power does not continue to become smaller, thereby maintaining a smooth state.
  • the difference between the reference power of the second historical reference period and the reference power of the first historical reference period is T, if T is greater than 1, the trend of the target power is increased, and at this time, the current transmission time should be The target power in the interval is subtracted from T to ensure that the target power does not continue to increase.
  • K is other values, the situation is similar. No longer here - repeat. As long as the purpose of the adjustment is to make the target power stable
  • Step S14 Obtain a data block length corresponding to the adjusted target power, and determine the target data block length.
  • the determining process of the target data block length is obtained by the user terminal according to the reference power of the historical reference time period, and the target power is adjusted by using the parameter, and no downlink signaling is introduced, and the target terminal does not need to introduce any downlink signaling.
  • the preset number of historical reference time segments includes: a second historical reference time period adjacent to the current transmission time interval, and, and the second The historical reference time period is adjacent to the first historical reference time period, and the reference power in this embodiment takes the average signal to noise ratio as an example.
  • the process of determining the data block length is as shown in FIG. 2, and includes:
  • Step S21 acquiring a second historical reference time period adjacent to the current transmission time interval, and an average signal to noise ratio of the first historical reference time period adjacent to the second historical reference time period, where the historical reference is The time period is the same length;
  • the average signal to noise ratio of the second historical reference time period is SIR1.
  • Step S22 Obtain a ratio of an average signal to noise ratio of the first historical reference time period to an average signal to noise ratio of the second historical reference time period;
  • Step S23 determining that the ratio is the adjustment parameter
  • Step S24 Adjust the target power in the current transmission time interval by using the adjustment parameter.
  • the specific process is: multiplying the adjustment parameter by the target power in the current transmission time interval, that is, K*SIR target.
  • Step S25 Obtain a data block length corresponding to the adjusted target power, and determine the target data block length.
  • the multiplied result is used as the adjusted target power, and the E-TFC table is used to find the data block length corresponding to the adjusted target power, and this is used as the target data block length.
  • the process is the same as the above process.
  • the average signal-to-noise ratio SIR0 of the first historical reference time period is assumed, and the average signal-to-noise ratio of the second historical reference time period is SIR1.
  • the process of target power is that the adjustment parameter is added to the target power within the current transmission number interval, that is, ⁇ + SIR target.
  • the data block length determining method is The process of determining the adjustment parameters of the reference power of each historical reference time period as shown in FIG. 3, and includes:
  • Step S31 Obtain a ratio of reference powers of each of the N reference slots and the neighboring historical reference period of the neighboring historical reference period.
  • N is a natural number greater than 2.
  • three adjacent historical reference time segments are sequentially defined in chronological order as a first historical reference time period, a second historical reference time period, and a third historical reference time period.
  • the reference powers of the three historical reference time segments are respectively obtained.
  • the average signal to noise ratios SIR0, SIR1, and SIR2 of the three historical reference time segments are respectively obtained, and then each history is calculated separately.
  • Step S32 Calculate an average value of ratios of reference powers of the respective historical reference time segments and subsequent ones of the subsequent historical reference time segments; Calculate the average of Kl and K2.
  • Step S33 Determine the average value as the adjustment parameter.
  • multiple historical reference time segments are selected and multiple ratios are obtained, and the average of the multiple ratios is calculated as the final adjustment parameter, so that the adjustment parameters are closer to the actual change of the average power. Trends make the final result more stable.
  • This embodiment does not limit the number of historical reference time periods of the preset number to three, and may also be other values. The larger the value, the more accurate the result.
  • the embodiment does not limit the ratio of the adjacent historical reference time period to reflect the change trend of the target power, and the difference value may also be used.
  • the reference power acquisition module 41 is configured to acquire a preset number of historical reference time segments, and calculate reference powers of the respective historical reference time segments, the lengths of the respective historical reference time segments are the same, and the preset number is not less than 2;
  • the adjustment parameter determining module 42 is configured to determine an adjustment parameter according to the reference power of each of the historical reference time periods;
  • the adjusting module 43 is configured to adjust, by using the adjustment parameter, a target power in a current transmission time interval
  • the target data block length determining module 44 is configured to obtain a data block length corresponding to the adjusted target power, and determine the target data block length.
  • the reference power adjustment module obtains the reference power adjustment parameter determining module of the historical reference time period of the user equipment to obtain the adjustment parameter, and after the adjustment module adjusts the target power by using the parameter, the target data block length determining unit finally determines the target data.
  • Block length the device is determining the number According to the process of the block length, no downlink signaling needs to be introduced, and the phenomenon that the downlink signaling needs to occupy the downlink channel code resources and power does not occur, and the communication efficiency of the downlink channel is improved.
  • the history reference time period may include M time slots, where M is a natural number greater than one.
  • the reference power of these historical reference time periods is obtained, that is, the average signal to noise ratio or the average power of the historical reference time period is obtained. If the historical reference time period includes multiple time slots, the average signal to noise ratio or average power of the historical time period obtained is the average signal to noise ratio or average power of all the time slots included in the historical time period. If there is only one time slot in the historical reference time period, the average signal to noise ratio or average power of the historical time period obtained is the signal to noise ratio or power of the time slot.
  • the preset number of historical reference time periods includes: a second history reference time period adjacent to the current transmission time interval, and a first history reference time period adjacent to the second history reference time period
  • the structure of the data block length determining device is substantially the same as that shown in FIG. 4, except that the structure of the adjusting parameter determining module 42 is as shown in FIG. 5, including:
  • a first ratio obtaining unit 51 configured to acquire a ratio of a reference power of the first historical reference period to a reference power of the second historical reference period;
  • the first determining unit 52 is configured to determine that the ratio is the adjustment parameter.
  • the structure of the data block length determining device is substantially the same as that shown in FIG. Only the structure of the adjustment parameter determining module 42 is as shown in FIG. 6, and includes:
  • the second obtaining unit 61 is configured to obtain, respectively, a ratio of reference powers of each of the N historical reference time periods and a subsequent historical reference time period of the adjacent one of the N historical reference time segments;
  • the average value calculating unit 62 is configured to calculate an average value of a ratio of reference powers of the respective historical reference time segments and a subsequent historical reference time period adjacent thereto;
  • the second determining unit 63 is configured to determine the average value as the adjustment parameter.
  • the present application also discloses another data block length determining apparatus, including:
  • a first processor configured to acquire a reference power of each historical reference time period in a preset number of historical reference time segments, where each of the historical reference time segments has the same length, and the preset number is not less than 2, according to the Determining the adjustment parameter of the reference power of each historical reference time period, adjusting the target power in the current transmission time interval by using the adjustment parameter, obtaining the data block length corresponding to the adjusted target power, and determining the target data as the target data Block length
  • a memory for storing the program in the first processor and the data generated by the program running in the first processor.
  • the present application also discloses a user equipment, which includes a data block length determining device as shown in any of Figures 4-6.
  • the functions described in the method of the present embodiment can be stored in a computing device readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, a portion of the embodiments of the present invention that contributes to the prior art or a portion of the technical solution may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a
  • the computing device (which may be a personal computer, server, mobile computing device, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

L'invention concerne un procédé, un dispositif et un équipement d'utilisateur (EU) pour déterminer la longueur d'un bloc de données, lequel procédé consiste à: acquérir un nombre prédéterminé de périodes de référence historiques et calculer la puissance de référence pour chaque période de référence historique, les périodes de référence historiques ayant la même longueur et le nombre prédéterminé étant supérieur ou égal à 2; déterminer un paramètre d'ajustement en fonction de la puissance de référence de chaque période de référence historique; utiliser le paramètre d'ajustement afin d'ajuster une puissance cible dans l'intervalle de temps de transmission de données courant (TTI); acquérir une longueur de bloc de données correspondant à la puissance cible ajustée, et déterminer la longueur de bloc de données comme étant une longueur de bloc de données cible. Dans le procédé de détermination de longueur de bloc de données selon un mode de réalisation de la présente invention, un terminal d'utilisateur acquiert un paramètre d'ajustement en fonction de la puissance de référence de sa période de référence historique, et ajuste la puissance cible via le paramètre afin d'obtenir une longueur de bloc de données cible sans introduire de signalisation de liaison descendante et sans utiliser une ressource de code de canal de liaison descendante ni une puissance de transmission de signalisation de liaison descendante, ce qui améliore l'efficacité de communication d'un canal de liaison descendante.
PCT/CN2013/076310 2013-05-28 2013-05-28 Procédé, dispositif et équipement d'utilisateur pour déterminer la longueur d'un bloc de données WO2014190481A1 (fr)

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Application Number Priority Date Filing Date Title
CN201380000555.XA CN104365158B (zh) 2013-05-28 2013-05-28 数据块长确定方法、装置及用户设备
PCT/CN2013/076310 WO2014190481A1 (fr) 2013-05-28 2013-05-28 Procédé, dispositif et équipement d'utilisateur pour déterminer la longueur d'un bloc de données

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PCT/CN2013/076310 WO2014190481A1 (fr) 2013-05-28 2013-05-28 Procédé, dispositif et équipement d'utilisateur pour déterminer la longueur d'un bloc de données

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CN110972246B (zh) * 2018-09-28 2023-09-22 维沃移动通信有限公司 功率控制方法、传输功率控制参数确定方法及相关设备

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