WO2019242524A1 - Procédé et appareil d'attribution de faisceau, station de base et support d'informations lisible - Google Patents

Procédé et appareil d'attribution de faisceau, station de base et support d'informations lisible Download PDF

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Publication number
WO2019242524A1
WO2019242524A1 PCT/CN2019/090650 CN2019090650W WO2019242524A1 WO 2019242524 A1 WO2019242524 A1 WO 2019242524A1 CN 2019090650 W CN2019090650 W CN 2019090650W WO 2019242524 A1 WO2019242524 A1 WO 2019242524A1
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Prior art keywords
synthetic
beams
activation
energy projection
energy
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PCT/CN2019/090650
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English (en)
Chinese (zh)
Inventor
周娜
周将运
刘汉超
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • Embodiments of the present disclosure relate to the field of communications, and for example, to a beam allocation method, device, base station, and computer-readable storage medium.
  • MIMO Massive Multiple-Input Multiple-Output
  • the cell is divided into multiple pre-formed beams to cover, and the active beam is selected for the terminal according to a certain strategy.
  • Terminals with no intersection of activation beams can spatially multiplex the same time-frequency resources, thereby increasing network capacity.
  • the activation beam selected for the terminal is not accurate, it will affect the performance of space division multiplexing and affect the cell downlink Traffic.
  • Beam allocation strategies in related technologies are usually activated first and then synthesized, which will cause inaccurate beam activation and inaccurate conversion of the inner loop modulation and coding strategy (MCS), affecting the downstream traffic of the cell. .
  • MCS inner loop modulation and coding strategy
  • Embodiments of the present disclosure provide a beam allocation method, device, base station, and computer-readable storage medium, which are intended to at least solve the problem of inaccurate beam activation in related technologies.
  • An embodiment of the present disclosure provides a beam allocation method, including:
  • the activation threshold is a limit value of the energy projection ratio of the composite beam.
  • An embodiment of the present disclosure further provides a beam allocation apparatus, including:
  • a projection determining module configured to determine an energy projection ratio of each of the at least two synthetic beams preset
  • a beam activation module configured to select, from the synthetic beams, at least one synthetic beam that meets an activation threshold as an activation beam, and allocate the activation beam to a user terminal;
  • the activation threshold is a limit value of an energy projection ratio of the composite beam.
  • An embodiment of the present disclosure further provides a base station including a processor, a memory, and a communication bus;
  • the communication bus is configured to implement connection and communication between the processor and the memory
  • the processor is configured to execute a computer program stored in the memory to implement the above-mentioned beam allocation method.
  • An embodiment of the present disclosure further provides a computer-readable storage medium.
  • the computer-readable storage medium stores one or more computer programs, and the computer programs can be executed by one or more processors to implement the foregoing methods.
  • FIG. 1 is a schematic diagram of a base station of a Massive MIMO system
  • FIG. 2 is a flowchart of a beam allocation method according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of another beam allocation method according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a beam allocation apparatus according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 1 includes two hardware components, namely, a physical layer (PHY) module and a media access control sub-layer (Control, Media Access Control, CMAC) module.
  • PHY refers to the physical layer, the lowest layer of Long Term Evolution (LTE) (the fourth generation mobile phone mobile communication standard, commonly known as 4G), and generally refers to the chip that interfaces with external signals.
  • CMAC refers to the media access control sublayer.
  • the PHY module reports the beam energy
  • the CMAC module performs beam activation and the inner MCS loss based on the reported beam energy, and sends the activation result to the PHY
  • the PHY synthesizes the beam to the user equipment ( User (Equipment, UE) to communicate, that is, activate first and then synthesize.
  • the PHY module is responsible for reporting the beam, and reports the energy projection ratio of each synthesized beam synthesized by the channel sounding reference signal (SRS) to the CMAC module; the CMAC module is based on the reported by the PHY module.
  • SRS channel sounding reference signal
  • the energy projection ratio of the composite beam is used to activate the beam and convert the MCS of the inner loop. Then send the synthesized beam index to the PHY, so the final beam energy of the PHY is the energy used to activate the beam and the MCS of the inner loop.
  • FIG. 2 is a flowchart of a beam allocation method according to an embodiment of the present disclosure, including:
  • S210 Determine an energy projection ratio of each of the preset at least two synthetic beams.
  • S220 From at least two synthetic beams, select at least one synthetic beam that satisfies an activation threshold as an activation beam, and allocate the activation beam to a user terminal.
  • the activation threshold is a limit value of the energy projection ratio of the composite beam.
  • determining a preset energy projection ratio of each of the at least two synthetic beams may include:
  • the 255 synthetic beam weights are arranged according to the number of single beams synthesized from small to large (1 to 8).
  • the embodiment of the present disclosure only exemplifies the case where the number of synthetic beams is 255, and it is not limited that the number of synthetic beams must be 255.
  • the corresponding design may be performed according to the actual system, or may be less than 255, or more than 255.
  • the implementation of the present disclosure Examples do not limit it.
  • determining the energy projection of each synthetic beam according to the two polarization direction covariance matrices of each of the two antenna vertical plates and the weight of each synthetic beam may include:
  • M CRS -1 is the number of the largest synthetic beam, which is 255 in this embodiment. At this point, the size of the energy projection of each beam has been calculated. Then, according to the percentage of the energy projection of these 255 synthetic beams relative to the CRS broadcast right, the energy projection ratio of each synthetic beam can be obtained.
  • the specific algorithm is as follows: After obtaining the energy projection proportion, the PHY module can report the energy projection proportion to the CMAC module.
  • selecting, from at least two synthetic beams, at least one synthetic beam that satisfies an activation threshold as an activation beam may include: determining, from at least two synthetic beams, a synthetic beam that satisfies an activation threshold; Among the synthetic beams, the synthetic beam with the smallest number of beams is selected as the activation beam.
  • the activation threshold is a limited value of the energy projection size of the synthetic beam, which is usually compared with the largest energy in the synthetic beam, that is, the 255th synthetic beam, which is obtained by combining all the single beams. The value is also the highest.
  • the activation threshold is characterized by a certain ratio of the maximum energy value, such as 85%.
  • the activation threshold can also be understood as the limit value of the energy projection ratio of the composite beam.
  • a synthetic beam with the smallest number of beams that meets the activation threshold is usually selected as the activation beam for activation. For example, at this time, there are 8 groups of synthetic beams that meet the activation threshold, and the number of single beams in the 8 groups is 3, 3, 4, 5, 6, 7, 7, and 8 respectively.
  • the composite beam is the active beam.
  • selecting the synthetic beam with the smallest number of beams as the activated beam from the synthetic beams that satisfy the activation threshold may further include: when the synthetic beam with the smallest number of beams includes at least two, selecting an energy projection ratio The highest synthetic beam is used as the activation beam. There may also be multiple synthetic beams with the smallest number of beams. When there are multiple synthetic beams with the smallest number of beams, since the number of beams is the same, then you can start from the perspective of energy size, that is, the proportion of energy projection among them The highest synthetic beam is activated as the activation beam, which can ensure the communication quality as much as possible.
  • it may further include:
  • the user terminal is currently wideband filtering the signal to interference plus noise ratio, SINR, a transmission scheme SINR value of the CQI;
  • SINR signal to interference plus noise ratio
  • the energy beam projector share each synthesis, SINR and the CQI, MCS determining breakage of the inner ring.
  • determining the MCS impairment of the inner loop according to the energy projection ratio of each synthetic beam and the SINR CQI may include:
  • I SDMA ⁇ k ⁇ UeSet Pall_UE (SdmaSet k _inx), where UeSet is allocated to the user terminal empty pairing the terminal, SdmaSet k _inx beam is activated bitmap index corresponding to each pair of terminals;
  • I ChanLoss Pall_UE (end) -Pall_UE (AckSet_inx), wherein the end corresponding to the maximum beam synthesized bitmap index;
  • ⁇ and ⁇ are each configurable parameters
  • the MCS of the inner ring is obtained through the SINR ' pair .
  • the calculated inner loop MCS loss is more accurate, which can further improve the downlink traffic of the cell.
  • This embodiment proposes to replace the single-beam summation scheme in the related technology by the SRS synthetic beam scheme, that is, the PHY module directly reports the energy projection proportion of the 255 synthetic beams synthesized by the SRS, and the CMAC module according to the 255 synthetic beams reported by the PHY module The proportion of the energy projection is used to activate the beam and convert the inner MCS. In this way, both the beam activation and the inner loop conversion use the final synthesized beam energy.
  • the scheme in the embodiment of the present disclosure is synthesized first and then activated, which is more accurate and real, and thus improves air separation. The multiplexing performance improves the downlink traffic of the cell.
  • FIG. 3 is a flowchart of another beam allocation method according to an embodiment of the present disclosure, including:
  • Preset 255 synthetic beam weights W CRS [w0, w1, ... w255], and the 255 synthetic beams are arranged according to the number of beams from small to large (1 to 8).
  • the energy projection is calculated by combining the averaged covariance matrix and 255 synthetic beam weights.
  • M CRS -1 is equal to 255.
  • the PHY reports the energy projection ratio of 255 active beam bitmaps to the CMAC.
  • the CMAC finds the composite beam set An * that has the smallest number of activated beams and meets the activation threshold in the order of the number of activated beams from small to large.
  • Pall_UE indicates the proportion of 255 energy projections reported by the current UE.
  • SINR CQI linear value
  • ⁇ is a configurable parameter
  • ⁇ is a configurable parameter
  • the channel quality indicator (CQI) is mapped through the SINR ' pair , the corresponding spectral efficiency (SE) is obtained through the CQI mapping, and then the inner-loop MCS is obtained through the SE mapping.
  • This embodiment provides a specific application of the beam allocation method. It is assumed that a single beam summation method has an active beam energy ratio that exceeds an activation threshold, and a synthetic beam method detection does not reach the threshold.
  • Synthetic beam function switch turn on Active beam energy ratio 85% Whether beam overlap can be spatially separated no
  • Cell 1 has 4 UEs distributed near-to-medium and far-off to perform airspace separation, which are UE0 to UE3.
  • the energy projection ratio of the remote beam UE3's synthetic beam method and compare it with the single beam summation method.
  • the same UE3 can be measured.
  • the ratio of the energy projection of the synthetic beam is lower than the energy ratio of the single-beam summation.
  • the energy ratio of the single-beam summation method has reached At an 85% threshold, these beams of UE3 will be activated. It should not be paired with UE3 for air separation, but paired with other UEs for air separation.
  • the inter-stream interference is severe, which affects the cell's air division multiplexing performance.
  • the energy projection ratio of the synthetic beam method does not reach the 85% threshold.
  • step two These beams of UE3 will not be activated. It can be found through step two that more beams can be activated to reach the activation threshold. However, the more active beams, the greater the probability of beam overlap with other UEs. Since the UEs with overlapping beams cannot be space-divided, the probability of empty allocation pairs becomes smaller, inter-stream interference is also reduced, and cell space-division is complex. The performance is improved, and the downlink traffic of the cell is improved.
  • Synthetic beam function switch turn on Active beam energy ratio 85% Whether beam overlap can be spatially separated no
  • Cell1 has 4 UEs distributed near-to-medium-distance for downlink air separation, which are UE0 to UE3.
  • the energy projection ratio of the synthetic beam method of the midpoint UE2 and compare the energy ratio of the single beam summation method.
  • the same UE2 can be measured.
  • the ratio of the energy projection of the synthetic beam is higher than that of the single-beam summation.
  • the energy ratio of the single-beam summation method does not reach 85. % Threshold, none of these beams of the UE will be activated. It can be found through the beam allocation method in the above embodiment that more beam activations can be selected to reach the activation threshold.
  • the UE is paired with space division and affects the cell space division multiplexing performance.
  • the energy ratio of the synthetic beam method has reached the threshold of 85%. These beams of UE2 will be activated and can be paired with other UEs for air separation.
  • the cell space division multiplexing performance is improved, and the cell downlink traffic is improved.
  • the composite beam method can make the MCS inner loop damage more accurate and the cell downlink traffic can be improved.
  • Synthetic beam function switch turn on Active beam energy ratio 85% Whether beam overlap can be spatially separated no
  • Cell1 has 3 UEs distributed near-to-medium-distance for downlink air separation, which are UE0 to UE2.
  • UE1 activates beam 0,1, and the corresponding energy projection is [1,0,0,0,0,0];
  • the paired UE2 activates beams 2, 3, and the corresponding energy projection is [0, 0, 0, 0, 0];
  • the paired UE3 activates beams 4,5,6, and the corresponding energy projection is [0,0,0,0,1,1,0]; where 0 represents an inactive single beam and 1 represents an activated single beam.
  • the synthetic beam method can be obtained through step three:
  • bin2dec ('11000000') 192;
  • bin2dec ('11111111') 255.
  • the internal loop damage information of the midpoint UE2 is obtained through the beam allocation method in the foregoing embodiment.
  • the internal loop damage of the synthetic beam will be smaller than that of the single beam summing method. It is 5, the single-loop summation method finally schedules the inner loop MCS to be 1 or 2, and the final scheduled inner loop MCS rises, which improves the cell space division multiplexing performance and the cell downlink traffic.
  • FIG. 4 is a schematic diagram of a composition of a beam allocation apparatus according to this embodiment, including:
  • the projection determination module 41 is configured to determine an energy projection ratio of each of the preset at least two synthetic beams
  • the beam activation module 42 is configured to select, from at least two synthetic beams, at least one synthetic beam that meets an activation threshold as an activation beam, and allocate the activation beam to a user terminal.
  • the activation threshold is a limit value of the energy projection ratio of the composite beam.
  • the projection determining module 41 is configured to determine the energy projection of each composite beam according to the two polarization direction covariance matrices of the two antenna vertical plates and the weight of each composite beam; The percentage of the energy projection of each composite beam relative to the CRS broadcast right of the cell-specific reference signal, to obtain the energy projection ratio of each composite beam.
  • the 255 synthetic beam weights are arranged according to the number of single beams synthesized from small to large (1 to 8).
  • the embodiment of the present disclosure only exemplifies the case where the number of synthetic beams is 255, and it is not limited that the number of synthetic beams must be 255.
  • the corresponding design can be performed according to the actual system, or it can be less than 255, or more than 255. Examples do not limit it.
  • determining the energy projection of each synthetic beam according to the two polarization direction covariance matrices of each of the two antenna vertical plates and the weight of each synthetic beam may include:
  • M CRS -1 is the number of the largest synthetic beam, which is 255 in this embodiment. At this point, the size of the energy projection of each beam has been calculated. Then, according to the percentage of the energy projection of these 255 synthetic beams relative to the CRS broadcast right, the energy projection ratio of each synthetic beam can be obtained.
  • the specific algorithm is as follows: After obtaining the energy projection proportion, the PHY module can report the energy projection proportion to the CMAC module.
  • the beam activation module 42 is configured to determine, from at least two synthetic beams, a synthetic beam that satisfies an activation threshold; and from among the synthetic beams that meet the activation threshold, select a synthetic beam with the smallest number of beams as the activation beam .
  • the activation threshold is a limited value of the energy projection size of the synthetic beam, which is usually compared with the largest energy in the synthetic beam, that is, the 255th synthetic beam, which is obtained by combining all the single beams. The value is also the highest.
  • the activation threshold is characterized by a certain ratio of the maximum energy value, such as 85%. In a composite beam with an energy projection size greater than or equal to 85%, it can be considered that it meets the activation threshold and can be activated.
  • a synthetic beam with the smallest number of beams that meets the activation threshold is usually selected as the activation beam for activation. For example, at this time, there are 8 groups of synthetic beams that meet the activation threshold, and the number of single beams in the 8 groups is 3, 3, 4, 5, 6, 7, 7, and 8 respectively.
  • the composite beam is the active beam.
  • selecting the synthetic beam with the smallest number of beams as the activated beam from the synthetic beams that satisfy the activation threshold may further include: when the synthetic beam with the smallest number of beams includes at least two, selecting an energy projection ratio The highest synthetic beam is used as the activation beam. There may also be multiple synthetic beams with the smallest number of beams. When there are multiple synthetic beams with the smallest number of beams, since the number of beams is the same, then you can start from the perspective of the energy size, that is, the energy projection ratio. The highest synthetic beam is activated as the activation beam, which can ensure the communication quality as much as possible.
  • an inner-loop MCS determination module 43 configured to:
  • the user terminal is currently wideband filtering the signal to interference plus noise ratio, SINR, a transmission scheme SINR value of the CQI;
  • SINR signal to interference plus noise ratio
  • the energy beam projector share each synthesis, SINR and the CQI, MCS determining breakage of the inner ring.
  • the inner-loop MCS determination module 43 is configured to:
  • I SDMA ⁇ k ⁇ UeSet Pall_UE (SdmaSet k _inx), where UeSet is allocated to the user terminal empty pairing the terminal, SdmaSet k _inx beam is activated bitmap index corresponding to each pair of terminals;
  • I ChanLoss Pall_UE (end) -Pall_UE (AckSet_inx), wherein the end corresponding to the maximum beam synthesized bitmap index;
  • ⁇ and ⁇ are each configurable parameters
  • the MCS of the inner ring is obtained through the SINR ' pair .
  • the calculated inner loop MCS loss is more accurate, which can further improve the downlink traffic of the cell.
  • This embodiment proposes to replace the single-beam summation scheme in the related technology by the SRS synthetic beam scheme, that is, the PHY module directly reports the energy projection proportion of the 255 synthetic beams synthesized by the SRS, and the CMAC module according to the 255 synthetic beams reported by the PHY module The proportion of the energy projection is used to activate the beam and convert the inner MCS. In this way, both the beam activation and the inner loop conversion use the final synthesized beam energy.
  • the scheme in the embodiment of the present disclosure is synthesized first and then activated, which is more accurate and real, and thus improves air separation
  • the multiplexing performance improves the downlink traffic of the cell.
  • FIG. 5 is a schematic diagram of a base station according to this embodiment, including a processor 51, a memory 52, and a communication bus 53.
  • the communication bus 53 is configured to implement connection and communication between the processor 51 and the memory 52;
  • the processor 51 is configured to execute a computer program stored in the memory 52 to implement the beam allocation method in one or more embodiments of the present disclosure, and details are not described herein again.
  • This embodiment provides a computer-readable storage medium.
  • the computer-readable storage medium stores one or more computer programs, and the computer programs can be executed by one or more processors to implement the foregoing one or more embodiments.
  • the beam allocation method in this paper is not repeated here.
  • modules or steps of the present disclosure may be implemented by a general-purpose computing device, and they may be centralized on a single computing device or distributed on a network composed of multiple computing devices. Alternatively, they can be implemented with program code executable by a computing device, so that they can be stored in a storage medium (Read-Only Memory (ROM) / Random Access Memory (RAM), Magnetic disks, optical disks) are performed by a computing device, and in some cases, the steps shown or described can be performed in a different order than here, or they can be made into one or more integrated circuit modules, respectively, Or multiple modules or steps in them are made into a single integrated circuit module for implementation. Therefore, the present disclosure is not limited to any specific combination of hardware and software.
  • Embodiments of the present disclosure provide a beam allocation method, device, base station, and computer-readable storage medium.
  • determining a preset energy projection ratio of each of the at least two synthetic beams selecting from the synthetic beams, At least one synthetic beam that satisfies the activation threshold is used as the activation beam and is allocated to the user terminal, so that each of the single beams is synthesized in advance to form at least two synthetic beams, and then the energy projection ratio of these at least two synthetic beams is directly calculated, so that The accuracy of beam activation is improved, and the downlink traffic of the cell is further improved.
  • the embodiment of the present disclosure also determines the inner ring MCS damage based on the composite beam, which improves the accuracy of the inner ring MCS damage calculation, and further improves the downlink traffic of the cell.

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Abstract

L'invention concerne un procédé et un appareil d'attribution de faisceau, une station de base et un support d'informations lisible. Le procédé consiste : à déterminer un rapport de projection d'énergie de chaque faisceau composite parmi au moins deux faisceaux composites prédéfinis (S210) ; à sélectionner, parmi les au moins deux faisceaux composites, au moins un faisceau composite satisfaisant un seuil d'activation en tant que faisceau activé, et à attribuer le faisceau activé à un terminal utilisateur (S220).
PCT/CN2019/090650 2018-06-19 2019-06-11 Procédé et appareil d'attribution de faisceau, station de base et support d'informations lisible Ceased WO2019242524A1 (fr)

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CN112383333B (zh) * 2020-10-09 2022-09-02 杭州红岭通信息科技有限公司 一种秩试探和赋形权计算的方法
CN115243305A (zh) * 2021-04-23 2022-10-25 中兴通讯股份有限公司 一种用户空间关联关系确定方法、基站及存储介质

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CN105790913A (zh) * 2014-12-26 2016-07-20 上海无线通信研究中心 FDD模式massive-MIMO系统中上行导频的选择与分配方法
US20160315686A1 (en) * 2015-04-23 2016-10-27 Electronics And Telecommunications Research Institute Antenna apparatus and method for beam forming thereof
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WO2010107814A2 (fr) * 2009-03-16 2010-09-23 Marvell World Trade Ltd. Récepteur multi-utilisateurs, multi-entrées, multi-sorties (mu-mimo)
CN108092701B (zh) * 2017-11-21 2020-12-01 东南大学 混合波束成形hbf系统波束选择方法、装置及存储介质

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CN105790913A (zh) * 2014-12-26 2016-07-20 上海无线通信研究中心 FDD模式massive-MIMO系统中上行导频的选择与分配方法
US20160315686A1 (en) * 2015-04-23 2016-10-27 Electronics And Telecommunications Research Institute Antenna apparatus and method for beam forming thereof
CN108260216A (zh) * 2018-01-22 2018-07-06 中兴通讯股份有限公司 高频通信的调度方法、设备及存储介质

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