WO2011157170A2 - Procédé, appareil et système de planification d'une ressource de transmission - Google Patents

Procédé, appareil et système de planification d'une ressource de transmission Download PDF

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Publication number
WO2011157170A2
WO2011157170A2 PCT/CN2011/075286 CN2011075286W WO2011157170A2 WO 2011157170 A2 WO2011157170 A2 WO 2011157170A2 CN 2011075286 W CN2011075286 W CN 2011075286W WO 2011157170 A2 WO2011157170 A2 WO 2011157170A2
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WIPO (PCT)
Prior art keywords
cqi
value
throughput rate
adjustment value
adjustment
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PCT/CN2011/075286
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English (en)
Chinese (zh)
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WO2011157170A3 (fr
Inventor
汤志平
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华为技术有限公司
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Priority to PCT/CN2011/075286 priority Critical patent/WO2011157170A2/fr
Priority to CN201180000866.7A priority patent/CN102265696B/zh
Publication of WO2011157170A2 publication Critical patent/WO2011157170A2/fr
Publication of WO2011157170A3 publication Critical patent/WO2011157170A3/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a transmission resource scheduling method, apparatus, and system. Background technique
  • HSPA+ High Speed Packet Access
  • QAM Quadrigular Amplitude Modulation
  • MIMO Multiple Input Multiple Output
  • 3GPP Third Generation partnership
  • High Speed Downlink Packet Access HSDPA
  • HSPA+ technology's main functions include Adaptive Modulation and Coding (hereinafter referred to as AMC) and Hybrid Automatic Repeat Request (Hybrid Automatic Repeat Request; Hereinafter referred to as: HARQ), shared channel sharing, and high-speed media access control (Media Access Control High Speed; hereinafter referred to as MAC_hs) / Enhanced High-Speed Media Access (Media Access Control-Enhanced High Speed; hereinafter referred to as MAC_ehs) Scheduling control strategies, etc.
  • AMC Adaptive Modulation and Coding
  • Hybrid Automatic Repeat Request Hybrid Automatic Repeat Request
  • shared channel sharing shared channel sharing
  • MAC_hs Media Access Control High Speed
  • MAC_ehs Enhanced High-Speed Media Access
  • Scheduling control strategies etc.
  • the MAC-hs/MAC-ehs scheduling entity is relatively important, and it needs to consider how to separate the high-speed downlink shared channel (Multi Speed-Downlink Share Channel; Abbreviation: HS-DSCH) Codewords and power resources, also need to take into account the user equipment (User Equipment; hereinafter referred to as: UE) confirmation (Acknowledgment; hereinafter referred to as: ACK) / Negative Acknowledgment (hereinafter referred to as: NACK), channel Quality Indicator (CQI) feedback to dynamically adjust the transmitted MAC_hs/MAC_ehs Protocol Data Unit (PDU) transport block size (Transport) Block S i ze; hereinafter referred to as: TBS).
  • UE User Equipment
  • ACK Acknowledgment
  • NACK Negative Acknowledgment
  • CQI channel Quality Indicator
  • TBS Transport block size
  • the CQI reported by the UE in the actual system cannot completely reflect the actual channel quality due to the lower requirement of the CQI measurement performance of the user equipment and the implementation of the user equipment.
  • the block error rate generated by the base station (such as the NodeB) when scheduling according to the CQI reported by the user varies greatly.
  • the analysis, simulation, and experiment prove that the BLER size changes.
  • the impact of user throughput is large, so the base station needs to adjust the reported CQI to obtain a CQI that is more suitable for the actual wireless environment, thereby achieving greater performance gain.
  • Embodiments of the present invention provide a transmission resource scheduling method, apparatus, and system, which maximizes performance and throughput of a cell.
  • an embodiment of the present invention provides a transmission resource scheduling method, including: receiving a channel quality indicator CQI reported by a user equipment UE;
  • Scheduling of transmission resources is performed according to the TBS.
  • An embodiment of the present invention provides a transmission resource scheduling apparatus, including:
  • a receiving module configured to receive a channel quality indicator CQI reported by the user equipment UE; a generating module, configured to generate a CQI adjustment value, where the CQI adjustment value is composed of a first CQI adjustment value and a second CQI adjustment value, where the first CQI adjustment value is adjusted according to a preset first CQI, and the step size is incorrect. Determining, by the target value of the code rate BLER and the measured value of the BLER, the second CQI adjustment value is determined according to a change of the throughput rate of the UE air interface;
  • an adjusting module configured to adjust, according to the CQI adjustment value, the received CQI reported by the UE
  • a selection module configured to select a transport block size TBS according to the adjusted CQI
  • a scheduling module configured to perform scheduling of transmission resources according to the TBS.
  • An embodiment of the present invention provides a transmission resource scheduling system, including a base station and a user equipment UE, where the base station includes the foregoing transmission resource scheduling apparatus, and the UE is configured to report a channel quality indication CQI to the base station.
  • a transmission resource scheduling adjustment method, apparatus, and system provided by an embodiment of the present invention, by generating a CQI adjustment value composed of a first CQI adjustment value and a second CQI adjustment value, and adjusting a step size according to a preset first CQI,
  • the target value of the BLER and the measured value of the BLER determine the first CQI adjustment value, determine the second CQI adjustment value according to the change of the throughput rate of the UE air interface, adjust the CQI reported by the UE according to the CQI adjustment value, and further adjust the CQI.
  • the CQI selects the TBS, and the transmission resource is scheduled according to the TBS.
  • the CQI adjustment value can be obtained in combination with the change of the throughput rate of the UE air interface, so that the cell capacity is further Improve, maximize the performance and throughput of the community.
  • FIG. 1 is a flowchart of Embodiment 1 of a method for scheduling a transmission resource according to the present invention
  • Embodiment 2 is a flowchart of Embodiment 2 of a transmission resource scheduling method according to the present invention
  • FIG. 3 is a signaling diagram of Embodiment 3 of a transmission resource scheduling method according to the present invention.
  • Embodiment 4 is a structural diagram of Embodiment 1 of a transmission resource scheduling apparatus according to the present invention.
  • FIG. 5 is a structural diagram of Embodiment 2 of a transmission resource scheduling apparatus according to the present invention.
  • FIG. 1 is a flowchart of Embodiment 1 of a method for scheduling a transmission resource according to the present invention. As shown in FIG. 1 , this embodiment provides a method for scheduling a transmission resource, which may specifically include the following steps:
  • Step 101 Receive a channel quality indicator CQI reported by the user equipment UE.
  • the base station receives the CQI reported by the UE, and the CQI is obtained by the UE itself, and the embodiment adjusts based on the CQI.
  • Step 102 Generate a CQI adjustment value, where the CQI adjustment value is composed of a first CQI adjustment value and a second CQI adjustment value, where the first CQI adjustment value adjusts a step size and a bit error rate according to a preset first CQI.
  • the target value of the BLER and the measured value of the BLER are determined, and the second CQI adjustment value is determined according to a change in the throughput rate of the UE air interface.
  • IBLER Initial Error Rate
  • the base station After receiving the CQI reported by the UE, the base station adjusts the CQI value to adjust the CQI reported by the UE.
  • the CQI adjustment value may specifically be composed of two parts, that is, the first CQI adjustment value and The second CQI adjustment value.
  • the first CQI adjustment value may be according to a preset first CQI adjustment step, a target value of the set IBLER, and a measured value of the IBLER measured according to the acknowledgement (ACK) and negative acknowledgement (NACK) information fed back by the UE. determine.
  • the second CQI adjustment value may be specifically determined according to the change of the throughput rate of the UE air interface, where the UE air interface may be specifically a UE Uu port.
  • the second CQI adjustment value ⁇ (3 ⁇ 4/ 2 can be calculated by using the following formula (1):
  • ACQI 2 CQI step2 x A ( 1 ) where C3 ⁇ 4/ ifep2 is the second CQI adjustment step size, ⁇ is the CQI adjustment coefficient, and the ⁇ is determined according to the magnitude relationship of the throughput rates in the two statistical periods.
  • the process of determining the CQI adjustment coefficient ⁇ in this embodiment may specifically include the following steps:: calculating a first decoded amount of correctly decoded UE feedback in the first statistical period; determining the first statistic according to the first payload amount a first throughput rate of the UE air interface in the period; a second decoded amount of the correctly decoded UE feedback in the second statistical period; and a second throughput rate of the UE air interface in the second statistical period according to the second payload amount Comparing the first throughput rate and the second throughput rate, if the second throughput rate is greater than the first throughput rate, determining ⁇ as the first adjustment coefficient; if the second throughput rate is less than or equal to the first throughput rate, determining ⁇ Is a second adjustment coefficient, where the first adjustment coefficient is greater than the second adjustment coefficient.
  • the first CQI adjustment ⁇ ACQI may be specifically determined by using the following formula (2):
  • Step 103 Adjust the CQI reported by the received UE according to the CQI adjustment value.
  • the base station After the CQI adjustment value is generated, the base station adjusts the CQI reported by the UE received in step 101 according to the CQI adjustment value, and may specifically superimpose the CQI adjustment value on the basis of the CQI reported by the UE. Now the adjustment of CQI.
  • Step 104 Select a TBS according to the adjusted CQI.
  • the base station selects the TBS according to the CQI adjusted according to the foregoing steps, and specifically, the corresponding TBS can be obtained by looking up the mapping relationship between the CQI and the number of code channels.
  • the step value of the CQI value of the mapping relationship between the CQI and the number of code channels may be specifically ldB, or the step value may be specifically set to a value between ldB and QdB.
  • Step 105 Perform scheduling of transmission resources according to the TBS.
  • the base station After selecting the corresponding TBS according to the adjusted CQI, the base station performs scheduling of the transmission resource according to the TBS to transmit data to the UE.
  • the MAC-hs/MAC-ehs scheduling entity of the base station may perform scheduling of the corresponding transmission resource, for example, the HS-DSCH codeword resource and the power resource corresponding to the TBS scheduled and selected by the UE.
  • the embodiment of the present invention may be described as an example of a Wideband Code Dividing Multiple Access (WCDMA) system, which may be a WCDMA system that introduces HSDPA, correspondingly
  • WCDMA Wideband Code Dividing Multiple Access
  • the base station can be a NodeB.
  • TD-SCDMA Time-Division-Synchronous Code Divi s Mul t iple Acces s
  • the code division is large.
  • the solution provided by this embodiment can also be used.
  • the execution body of the corresponding step may be a transmission resource scheduling device of the corresponding system.
  • the embodiment provides a transmission resource scheduling method, which generates a CQI adjustment value composed of a first CQI adjustment value and a second CQI adjustment value, and adjusts a step size, a BLER target value, and a BLER according to a preset first CQI.
  • the measured value determines the first CQI adjustment value, determines the second CQI adjustment value according to the change of the throughput rate of the UE air interface, adjusts the CQI reported by the UE according to the CQI adjustment value, and then selects the TBS by using the adjusted CQI, according to The TBS is used to schedule transmission resources.
  • Embodiment 2 is a flowchart of Embodiment 2 of a method for scheduling a transmission resource according to the present invention. As shown in FIG. 2, this embodiment provides a method for scheduling a transmission resource, which may specifically include the following steps:
  • Step 201 The base station receives the CQI reported by the UE.
  • Step 202 The base station determines, according to the preset first CQI adjustment step size, the target value of the IBLER, and the measured value of the IBLER, the first CQI adjustment value.
  • the base station can adjust the step size C3 ⁇ 4/ ifepl according to the preset first CQI, the target value of the IBLER/ ⁇ ? implant and the measured value of the IBLER /E? Mre according to the CQI correction algorithm shown in the above formula (2).
  • the first CQI adjustment value ⁇ ⁇ is determined, wherein c3 ⁇ 4/1 can be preset according to actual conditions, for example, it can be set to ldB or 0.5dB, /E? can be set according to actual conditions, and IBLER_ is according to UE.
  • the ACK and NACK information is fed back and measured.
  • Step 203 The base station calculates a correctly decoded first payload amount fed back by the UE in the first statistical period, and determines a first throughput rate of the UE air interface in the first statistical period according to the first payload.
  • the base station when the CQI is adjusted, the base station takes the throughput rate of the UE as a reference factor, and determines the CQI adjustment coefficient ⁇ in the calculation formula of the second CQI adjustment value according to the change of the throughput rate of the UE air interface. Specifically, the base station collects statistics on the throughput rate of the UE in a set statistical period, and obtains the relationship between the throughput rates of the two adjacent statistical periods.
  • the throughput rate here may be specifically the actual receiving throughput rate of the UE Uu port.
  • TTI Transport Time Interval
  • the N in the period r formula is set to a multiple of 6.
  • the step is specifically: the base station calculates the first decoded amount of the correctly decoded UE feedback in the first statistical period, and determines the first throughput rate of the UE air interface in the first statistical period according to the first payload, where UE first counting period of the first air interface referred to as throughput T n.
  • the first throughput rate may be generated by accumulating the correctly decoded first payload of the UE feedback in the first statistical period.
  • Step 204 The base station calculates a correctly decoded second payload of the UE that is fed back in the second statistical period, and determines a second throughput rate of the UE air interface in the second statistical period according to the second payload.
  • the step is specifically: the base station collects the second decoded amount of the correctly decoded UE feedback in the second statistical period, and determines the second throughput rate of the UE air interface in the second statistical period according to the second payload, where The second throughput rate of the UE air interface in the second statistical period is recorded as ⁇ réelle +1 .
  • the second statistical period is the next statistical period adjacent to the first statistical period. Specifically, the second can be passed here.
  • the second decoded amount of correctly decoded UE feedback during the statistical period is accumulated to generate a second throughput rate.
  • Step 205 The base station determines whether the second throughput rate is greater than the first throughput rate. If yes, step 206 is performed; otherwise, step 207 is performed.
  • the base station After completing the statistics of the throughput rate in two adjacent statistical periods, that is, after obtaining the first throughput rate ⁇ and the second throughput rate ⁇ ⁇ + ⁇ through the above steps, the base station compares the throughput rates in the two adjacent statistical periods. The change. The base station determines whether the second throughput rate ⁇ +1 in the second statistical period is greater than the first throughput rate ⁇ in the first statistical period. If yes, the subsequent step 206 is performed; otherwise, step 207 is performed.
  • Step 206 The base station determines that the CQI adjustment coefficient ⁇ is the first adjustment coefficient, and performs step 208.
  • the base station determines the CQI adjustment coefficient ⁇ as the first adjustment coefficient, and proceeds to the subsequent step 208 .
  • the first adjustment coefficient in this embodiment may be specifically 1, that is, it may be specifically represented by the following formula (3): ⁇ 1°' IF ( » ⁇ T »”), (3)
  • Step 207 The base station determines that the CQI adjustment coefficient ⁇ is the second adjustment coefficient, and performs step 208.
  • the base station determines the CQI adjustment coefficient ⁇ as the second adjustment coefficient, and proceeds to perform the subsequent step 208
  • the first adjustment coefficient in this embodiment is greater than the second adjustment coefficient, and the second adjustment coefficient in this embodiment may be specifically 0, as shown in the above formula (3).
  • the throughput rate is greater than the throughput rate obtained in the previous previous statistical period, the CQI adjustment coefficient is increased, so that the subsequent CQI adjustment value is increased, thereby increasing the adjusted CQI so that it can adapt to the increased throughput rate. .
  • Step 208 The base station determines a second CQI adjustment value according to the CQI adjustment coefficient and the second CQI adjustment step.
  • the above formula (1) is used to specifically determine the second CQI adjustment value ⁇ (3 ⁇ 4/ 2.
  • the second CQI adjustment step C3 ⁇ 4/ 2 can be set according to the actual situation, such as set to ldB, 0.5dB or 0.25dB, etc., and can also be set equal to the first CQI adjustment step C0/ ifepl Value.
  • the base station may further set a different second CQI adjustment step C3 ⁇ 4/ 2 for different grades of the CQI range to which the CQI reported by the UE belongs.
  • the CQI range reported by the UE is 0-30 dB
  • the CQI range to which the CQI reported by the UE belongs may be different.
  • the C0/ 2 should be set to 0.25dB to determine the adjustment value according to different CQI to meet the needs of different actual situations. It can be understood that when N is taken as 1, it is equivalent to no grade.
  • Step 209 The base station generates a CQI adjustment value according to the first CQI adjustment value and the second CQI adjustment value.
  • a first CQI adjustment value obtained in the calculation of ⁇ ⁇ ⁇ adjustment value [Delta] CQI and the second post (3 ⁇ 4 / 2, at the base station end of the period 2 ⁇
  • the two can be added together, that is, the following formula (4) is used to generate the CQI adjustment value 3 ⁇ 4/:
  • Step 210 The base station adjusts the CQI reported by the received UE according to the CQI adjustment value.
  • the base station can adjust the CQI reported by the UE according to the CQI adjustment value ACg/, and specifically, the adjusted CQI can be calculated by using the following formula (5). :
  • Step 211 The base station selects the TBS according to the adjusted CQI.
  • the step value of the CQI value in the mapping relationship table in this embodiment may be specifically ldB.
  • the step value of the CQI value in the mapping relationship table in this embodiment may also be specifically between IdB and OdB, such as 0.5 dB, 0.25 dB, etc., so that the mapping relationship table is more discretized, according to the A more accurate TBS can be obtained when the mapping relationship table selects TBS.
  • Step 212 The base station performs scheduling of transmission resources according to the TBS.
  • the base station After selecting the corresponding TBS according to the adjusted CQI, the base station performs scheduling of the transmission resource according to the TBS to transmit data to the UE.
  • the embodiment provides a transmission resource scheduling method, which generates a CQI adjustment value composed of a first CQI adjustment value and a second CQI adjustment value, and adjusts a step size and a target value of the IBLER according to the preset first CQI. And determining, by the measured value of the IBLER, the first CQI alignment, determining the second CQI adjustment value according to the change of the throughput rate of the UE air interface, adjusting the CQI reported by the UE according to the CQI adjustment value, and further selecting the TBS by using the adjusted CQI. According to the TBS, the transmission resource is scheduled according to the TBS.
  • FIG. 3 is a signaling diagram of Embodiment 3 of a method for scheduling a transmission resource according to the present invention. As shown in FIG. 3, this embodiment provides a method for scheduling a transmission resource, which may specifically include the following steps:
  • Step 301 The UE reports CQ I to the base station.
  • Step 302 The base station determines, according to the preset first CQI adjustment step size, the target value of the IBLER, and the measured value of the IBLER, the first CQI adjustment value.
  • Step 303 The base station determines the CQI adjustment coefficient by counting the size of the throughput rate of the UE air interface in the two adjacent statistical periods. This step may be similar to the foregoing steps 203-208.
  • Step 304 The base station determines a second CQI adjustment value according to the preset second CQI adjustment step size and the CQI adjustment coefficient.
  • Step 305 The base station generates a CQI adjustment value according to the first CQI adjustment value and the second CQI adjustment value.
  • Step 306 The base station adjusts the CQI reported by the received UE according to the CQI adjustment value.
  • Step 307 The base station selects the TBS according to the adjusted CQI.
  • Step 308 The base station transmits the resource to the UE according to the TBS.
  • the embodiment provides a transmission resource scheduling method, which generates a CQI adjustment value composed of a first CQI adjustment value and a second CQI adjustment value, and adjusts a step size, an IBLER target value, and an IBLER according to a preset first CQI.
  • the measured value determines the first CQ I adjustment value, determines the second CQI adjustment value according to the change of the throughput rate of the UE air interface, adjusts the CQ I reported by the UE according to the CQI adjustment value, and then selects the TBS by using the adjusted CQI.
  • the CQI adjustment value calculated in the CQI correction algorithm can be further adjusted according to the reception throughput rate of the UE in the statistical period, so that the cell capacity is further improved; further, the implementation By further quantizing the mapping relationship between the CQI and the number of code channels, it is possible to more accurately select the corresponding TBS, thereby maximizing the performance and throughput of the cell, and further reducing the BLER of the UE.
  • FIG. 4 is a structural diagram of Embodiment 1 of a transmission resource scheduling apparatus according to the present invention. As shown in FIG. 4, this embodiment provides a transmission resource scheduling apparatus, which may specifically perform the steps in Embodiment 1 of the foregoing method, where Let me repeat.
  • the transmission resource scheduling apparatus may specifically include a receiving module 401, a generating module 402, an adjusting module 403, a selecting module 404, and a scheduling module 405.
  • the receiving module 401 is configured to receive a signal indication CQI reported by the user equipment UE.
  • the generating module 402 is configured to generate a CQI adjustment value, where the CQI adjustment value is composed of a first CQI adjustment value and a second CQI adjustment value, where the first CQI adjustment value is adjusted according to a preset first CQI.
  • the target value of the code rate BLER and the measured value of the BLER are determined, and the second CQI adjustment value is determined according to a change in the throughput rate of the UE air interface.
  • the CQI adjustment value may specifically be composed of two parts, that is, a first CQI adjustment value and a second CQI adjustment value.
  • the first CQI adjustment value may be determined according to a preset first CQI adjustment step, a target value of the set BLER, and a measured value of the BLER measured according to the acknowledgement (ACK) and negative acknowledgement (NACK) information fed back by the UE. determine.
  • the second CQI adjustment value may be specifically determined according to the change of the throughput rate of the UE air interface, where the UE air interface may be specifically a UE Uu port.
  • the adjusting module 403 is configured to adjust the received CQI reported by the UE according to the CQI adjustment value.
  • the base station After generating the CQI adjustment value, the base station adjusts the CQI reported by the UE received in step 101 according to the CQI adjustment value,
  • the adjustment of the CQI may be implemented by superimposing the CQI adjustment value on the basis of the CQI reported by the UE, that is, the adjusted CQI is calculated by using the above formula (5).
  • the selection module 404 is configured to select a transport block size TBS according to the adjusted CQI.
  • the scheduling module 405 is configured to perform scheduling of transmission resources according to the TBS.
  • error rate in the embodiment of the present invention is mainly described by using the initial error rate IBLER as an example, but is not limited thereto.
  • FIG. 5 is a structural diagram of a second embodiment of a transmission resource scheduling apparatus according to the present invention. As shown in FIG. 5, the embodiment provides a transmission resource scheduling apparatus, which may specifically perform the steps in the second embodiment of the foregoing method. Let me repeat.
  • the transmission resource scheduling apparatus is based on the foregoing FIG. 4, and the generating module 402 may specifically include a first generating unit 412, a determining unit 422, and a second generating unit 432.
  • the first generating unit 412 is configured to determine the first CQI adjustment value according to the preset first CQI adjustment step size, the target value of the IBLER, and the measured value of the IBLER.
  • the determining unit 422 is configured to determine the CQI adjustment coefficient according to the size relationship of the throughput rate of the UE air interface in the two statistical periods.
  • the second generating unit 432 is configured to determine the second CQI adjustment value by using the above formula (1).
  • the base station After calculating the first CQI adjustment value ACg ⁇ and the second CQI adjustment value ACg/ 2 , the base station is at the end of the 2 ⁇ period, according to ACg/. ⁇ Cg/ 2 to specifically generate the CQI adjustment value ACg/, which can be obtained by adding the two, that is, using the above formula (4) to generate the CQI adjustment value ACg/.
  • the determining unit 422 may specifically include a first statistic subunit 4221, a first determining subunit 4222, a second statistic subunit 4223, a second determining subunit 4224, and a comparing subunit 4225.
  • the throughput of the UE is counted in a set statistical period, and the relationship between the throughput rates of the two adjacent statistical periods is obtained.
  • the throughput rate here may be specifically the actual receiving throughput rate of the UE Uu port.
  • the relationship between the throughput rates of the two adjacent periods is different, and the corresponding CQI adjustment coefficients are also different, which in turn affects the size of the CQI value, and the CQI value is adjusted according to the throughput rate of the UE.
  • N is a positive integer.
  • the following is an example of the 3GPP TS 25. 211 protocol.
  • the first statistic subunit 4221 is configured to collect a first decoded payload that is correctly decoded by the UE in the first statistic period.
  • the first determining subunit 4222 is configured to determine, according to the first payload, a first throughput rate of the UE air interface in the first statistical period, where the first throughput rate of the UE air interface in the first statistical period may be Recorded as T n . Specifically, the first throughput rate may be generated by accumulating the correctly decoded first payload of the UE feedback in the first statistical period.
  • the second statistic sub-unit 4223 is configured to collect a second payload of the correct MME that is fed back by the UE in the second statistic period.
  • the second determining subunit 4224 is configured to determine, according to the second payload, a second throughput rate of the UE air interface in the second statistical period, where the second throughput rate of the UE air interface in the second statistical period may be It is recorded as ⁇ réelle +1 , where the second statistical period is the next statistical period adjacent to the first statistical period. Specifically, the second net of correct decoding of the UE feedback in the second statistical period can be used here.
  • the load is accumulated to generate a second throughput rate.
  • the comparison subunit 4225 is configured to compare the magnitudes of the first throughput rate and the second throughput rate, and if the second throughput rate is greater than the first throughput rate, determining ⁇ is a first adjustment coefficient; if the second throughput rate is less than or equal to the first throughput rate, determining that ⁇ is a second adjustment coefficient, wherein the first adjustment coefficient is greater than the second adjustment coefficient.
  • the first adjustment coefficient may be specifically 1 and the second adjustment coefficient may be specifically 0, that is, may be specifically represented by the above formula (3).
  • the CQI adjustment coefficient is increased, so that the subsequent CQI adjustment value is increased, and then the adjusted CQI is increased, so that it can adapt to the increased throughput rate.
  • the first generating unit 412 in this embodiment is specifically configured to determine the first CQI adjustment value by using the above formula (2).
  • the CQI correction algorithm shown in the above formula (2) is used to adjust the step size and the target value of IBLER/E g according to the preset first CQI.
  • the measured value of the IBLER is used to determine the first CQI adjustment value ACg/, one of which can be preset according to the actual situation, for example, it can be set to ldB or 0. 5dB, / E ⁇ can be set according to the actual situation, and IBLER_ is according to the UE.
  • the ACK and NACK information is fed back and measured.
  • the selecting module 404 in this embodiment may be specifically configured to search for CQI values and codes.
  • a mapping table of the number of channels the TBS corresponding to the adjusted CQI is selected, where the step value of the CQI value of the mapping relationship table is ldB, or the step value of the CQI value of the mapping relationship table is between Between ldB and OdB.
  • the subsequent transmission may be selected according to the adjusted CQI, that is, the mapping relationship between the CQI value and the number of code channels set in the 25.214 protocol.
  • the TBS used by resource scheduling enables the use of the best TBS to improve throughput.
  • the step value of the CQI value in the mapping relationship table in this embodiment may be specifically ldB c or the step value of the CQI value in the mapping relationship table in this embodiment may also be specifically between ldB and OdB. For example, 0. 5dB, 0. 25dB, etc., so that the mapping relationship table is more discretized, and a more accurate TBS can be obtained when the TBS is selected according to the mapping relationship table.
  • the embodiment provides a transmission resource scheduling apparatus, which generates a CQI adjustment value composed of a first CQI adjustment value and a second CQI adjustment value, and adjusts a step size, a BLER target value, and a BLER according to a preset first CQI.
  • the measured value determines the first CQI adjustment value, determines the second CQI adjustment value according to the change of the throughput rate of the UE air interface, adjusts the CQI reported by the UE according to the CQI adjustment value, and then selects the TBS by using the adjusted CQI, according to The TBS is used to schedule transmission resources.
  • the CQI adjustment value calculated in the CQI correction algorithm can be further adjusted according to the receiving throughput rate of the UE in the statistical period.
  • the cell capacity is further improved.
  • the present embodiment further optimizes the mapping of the CQI and the number of code channels to achieve a more accurate selection of the corresponding TBS, thereby maximizing the performance and throughput of the cell, and further reducing the BLER of the UE. .
  • the present embodiment further provides a transmission resource scheduling system, which may specifically include a base station and a user equipment UE, where the base station may specifically include the foregoing transmission resource scheduling apparatus shown in FIG. 4 or FIG. 5, where the UE is used to report channel quality to the base station. Indicates CQI.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé, un appareil et un système de planification d'une ressource de transmission, ledit procédé comprenant les étapes suivantes : un Indicateur de Qualité de Canal (CQI, Channel Quality Indicator) signalé par un Équipement Utilisateur (UE, User Equipment) est reçu ; une valeur d'ajustement de CQI constituée d'une première valeur d'ajustement de CQI et d'une seconde valeur d'ajustement de CQI est générée, la première valeur d'ajustement de CQI étant déterminée sur la base de la longueur prédéfinie du pas d'ajustement de premier CQI, de la valeur cible du BLER (taux d'erreur sur les blocs) et de la valeur mesurée du BLER, la seconde valeur d'ajustement de CQI est déterminée sur la base de l'instant de variation du débit de l'interface radio de l'UE ; le CQI reçu signalé par l'UE est ajusté sur la base de la valeur d'ajustement de CQI ; une Taille de Bloc de Transport (TBS, Transport Block Size) est sélectionnée sur la base du CQI ajusté ; et la ressource de transmission est planifiée sur la base de la TBS. L'invention concerne également un appareil et un système de planification d'une ressource de transmission. Le mode de réalisation de la présente invention permet d'améliorer au mieux les performances et le débit des cellules.
PCT/CN2011/075286 2011-06-03 2011-06-03 Procédé, appareil et système de planification d'une ressource de transmission WO2011157170A2 (fr)

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PCT/CN2011/075286 WO2011157170A2 (fr) 2011-06-03 2011-06-03 Procédé, appareil et système de planification d'une ressource de transmission
CN201180000866.7A CN102265696B (zh) 2011-06-03 2011-06-03 传输资源调度方法、装置和系统

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CN102546111A (zh) * 2012-01-09 2012-07-04 大唐移动通信设备有限公司 一种cqi确定方法及装置
CN103828415A (zh) * 2012-03-14 2014-05-28 日电（中国）有限公司 用于通信系统中的数据传输的方法和装置
JP5840299B2 (ja) * 2012-03-29 2016-01-06 エヌイーシー（チャイナ）カンパニー， リミテッドＮＥＣ（Ｃｈｉｎａ）Ｃｏ．，Ｌｔｄ． 符号化されたｍｉｍｏシステムにおけるリンクアダプテーションのための方法及び装置
CN103595500B (zh) * 2012-08-15 2017-09-12 华为技术有限公司 信息处理的方法和发射机
CN103229580B (zh) * 2012-12-21 2016-09-28 华为技术有限公司 资源调度的方法和装置
CN103974441B (zh) * 2013-01-31 2018-01-16 华为技术有限公司 一种调度方法和装置
WO2018049562A1 (fr) 2016-09-13 2018-03-22 华为技术有限公司 Procédé de modulation et de codage adaptatifs et station de base

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WO2010033704A2 (fr) * 2008-09-17 2010-03-25 Qualcomm Incorporated Optimisation du débit dans un système de communication sans fil

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