WO2012171247A1 - Procédé, équipement d'abonné et station de base conçus pour une autorisation d'ordonnancement - Google Patents

Procédé, équipement d'abonné et station de base conçus pour une autorisation d'ordonnancement Download PDF

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Publication number
WO2012171247A1
WO2012171247A1 PCT/CN2011/078099 CN2011078099W WO2012171247A1 WO 2012171247 A1 WO2012171247 A1 WO 2012171247A1 CN 2011078099 W CN2011078099 W CN 2011078099W WO 2012171247 A1 WO2012171247 A1 WO 2012171247A1
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Prior art keywords
dpdch
tfci
gain factor
quantization table
power gain
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English (en)
Chinese (zh)
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张海燕
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for scheduling authorization, a user equipment, and a base station.
  • HSUPA High Speed Uplink Packet Access
  • 3GPP Third Generation Partnership Project
  • An E-DCH Enhanced Dedicated Channel
  • the E-DCH moves the scheduling function from the RNC (Radio Network Controller) to the Node B (hereinafter referred to as Node B) to Fast packet scheduling is implemented.
  • Hybrid Automatic Repeat Request (HARQ) technology is used to implement fast retransmission at the physical layer.
  • the Node B uses certain scheduling according to the available resources of the cell, the interference threshold, the scheduling request of the UE (User Equipment), the QoS (Quality of Service) requirements, and the scheduling priority.
  • the algorithm allocates uplink resources to the UE.
  • R6 only supports BPSK (Binary Phase Shift Keying) modulation mode, the maximum rate can reach 5.76Mbps;
  • R7 introduces 16QAM (Quadature Amplitude Modulation), which is 4PAM (pulse amplitude) Modulation mode, the maximum rate can reach 11.52Mbps;
  • R9 introduces dual carrier technology, the maximum rate can reach 23.04Mbps.
  • the E-DCH is carried by an E-DCH Dedicated Physical Data Channel (E-DPDCH), and may have 0, one or more E-DPDCH channels.
  • the control information accompanying the E-DCH is carried by an E-DCH Dedicated Physical Control Channel (E-DPCCH), and the E-DPCCH exists only when the E-DPDCH exists, and at most Can have an E-DPCCH.
  • E-DCH can use multiple transport format sets, each set includes multiple transport formats, the protocol gives The transport block indication (TB Index ) and the corresponding transport block size bit number (TB Size ) in each set are derived.
  • the network configures the used set to the UE when establishing an E-DCH channel.
  • ⁇ E-DCH transport time interval
  • the UE selects one of the sets.
  • the transport format is sent to the network side, and the transport format is identified by an enhanced dedicated channel transport format combination indicator (E-TFCH Transport Format Combination Indicator, E-TFCI for short).
  • E-TFCH Transport Format Combination Indicator E-TFCI for short.
  • the Node B determines a scheduling and a Scheduling Grant (SG) according to the scheduling request.
  • the UE determines the size of the data block that can be sent and its transmit power according to the scheduling grant information sent by the Node B.
  • a conventional method for determining scheduling grants (which is used in the protocol) is to quantify the power gain factor Arf of each E-DPDCH channel using Table 1 or Table 2 (from TS 25.213).
  • E-TFCI boost is introduced for providing an enhanced phase reference for the E-DPCCH channel when transmitting a larger E-TFCI, configured by the RNC to the Node B and the UE, and is an optional cell.
  • the protocol stipulates that: UE's E-TFCI boost capability is optional, UEs with 16QAM capability do not necessarily have E-TFCI boost capability, and UEs without 16QAM capability may also have E-TFCI boost capability.
  • the power gain factor of the E-DPDCH is determined by the E-TFCI, the number of physical channels used and the transport block size, the number of physical channels used by the reference E-TFCI and the transport block size, the reference E-TFCI gain factor, and the hybrid automatic retransmission.
  • the information such as the offset A harq of the Hybrid Automatic Repeat Request (HARQ) is calculated.
  • the calculation of the non-quantized value of the entire E-DPDCH is actually independent of the E-TFCI boost, except that when the quantization table is finally used, the different quantization tables are used according to whether the E-TFCI is larger than the E-TFCI boost, that is, Table 1 and Table 2 above.
  • the E-DPDCH power gain factor non-quantitative value should be calculated in the same range regardless of whether E-TFCI boost is used or not.
  • the range of quantization is quite different: the maximum quantization value can only reach 168/15 when E-TFCI boost is not used, and the maximum quantization value can reach 377 when using E-TFCI boost. /15, thereby limiting the maximum rate that Combination 2 in Table 3 can achieve.
  • the range of the power gain factor non-quantitative value of E-DPDCH should be the same regardless of whether E-TFCI boost is used or not.
  • the range of quantization is very different, for example, when E-TFCI boost is not used, the maximum quantization The value can only reach 168/15, and the maximum quantization value can reach 267/15 when using E-TFCI boost, thus limiting the maximum rate that can be achieved by the combination 4 in Table 3.
  • the existing SG determination method has the following drawbacks: In the case of combination 2 and combination 4 in Table 3, the maximum rate of HSUPA in the modulation mode cannot be achieved, and thus the high speed characteristics of HSUPA cannot be fully utilized.
  • the object of the present invention is to provide a method for scheduling authorization, a user equipment, and a base station, which solves the defect that the UE cannot reach the maximum rate in the existing SG determining method.
  • the present invention provides a method for determining a scheduling authorization, and the method includes:
  • the user equipment uses a unified enhanced dedicated transport channel dedicated physical data channel (E-DPDCH) relative to the dedicated transport channel dedicated physical data channel (DPDCH) when determining the required scheduling grant (SG) according to the transport block size.
  • E-DPDCH enhanced dedicated transport channel dedicated physical data channel
  • a power gain factor offset (A E-DPDCH ) quantization table a non-quantized value of a power gain factor of an E-DPDCH required for each enhanced dedicated channel transport format combination indication (E-TFCI) corresponding to the transport block size Quantify.
  • the unified A ED p DCH quantization table is: E-TFCI>E-TFCI boost (E-TFCI boost)! ⁇ Quantity 4 ⁇ table.
  • the quantization is performed using the A ED p DCH quantization table when the E-TFCI >E-TFCI boost is used.
  • the UE quantizes the non-quantized value of the power gain factor of the E-DPDCH required for each E-TFCI by using the unified ⁇ ⁇ 4) ⁇ ⁇ quantization table as follows:
  • the quantized value of the power gain factor of the E-DPDCH channel required for the E-TFCI k is the number of the E-DPDCH channel;
  • A is the power gain factor of the DPCCH channel;
  • a DPDCH beta] is the uniform quantization tables that satisfy ⁇ ⁇ ⁇ ⁇ "maximum value of the quantization method. Also includes:
  • the method further includes: the base station performing scheduling authorization on the UE by using the unified ⁇ quantization table.
  • the present invention further provides a user equipment for determining a scheduling grant, comprising a scheduling grant determining unit, wherein the scheduling grant determining unit is configured to determine a transport block size for transmitting uplink data according to scheduling grant information sent by the base station, where:
  • the scheduling authorization determining unit is further configured to: determine a required scheduling grant (SG) according to the transport block size, and use a unified A E — D p DCH quantization table for each E-TFCI corresponding to the transport block size.
  • the non-quantized value of the power gain factor of the E-DPDCH is quantized.
  • the unified A ED p DCH quantization table is an A D p DCH quantization table when E-TFCI >E-TFCI boost (E-TFCI boost ); the scheduling authorization determining unit is set to be in each E-TFCI
  • E-TFCI boost E-TFCI boost
  • the scheduling authorization determining unit is set to be in each E-TFCI
  • E-TFCI >E- is used regardless of whether the UE uses E-TFCI boost and whether the UE uses quadrature amplitude modulation (16QAM).
  • the A DPDCH quantization table at TFCI boost is quantized.
  • the scheduling grant determining unit is configured to quantize the non-quantized value of the power gain factor of the E-DPDCH required for each E-TFCI by: ed'min,
  • the quantized value of the power gain factor of the E-DPDCH channel required for the E-TFCI, k is the number of the E-DPDCH channel;
  • A is the power gain factor of the DPCCH channel; A ed, to the uniform quantization table A DPDCH p ed, the smallest quantization value of k lp c;. ⁇ is the uniform quantization table A DPDCH satisfy ⁇ ⁇ ⁇ ⁇ "maximum quantized value Further, the present The invention also provides a base station that performs scheduling authorization for the UE using the same ⁇ ⁇ 4) ⁇ ⁇ quantization table as the quantization table used by the UE.
  • the present invention has at least the following beneficial effects:
  • the present invention simultaneously considers the modulation scheme of BPSK, 16QAM, and the use of E-TFCI Boost, and modifies the quantization table used by the currently used E-DPDCH power gain factor so that when 16QAM is used and E-TFCI boost is not used
  • the maximum gain value of the power gain factor of the E-DPDCH is increased from 168/15 to 377/15; the maximum gain value of the power gain factor of the E-DPDCH when 16QAM is not used and E-TFCI boost is not used is from the original 168 /15 increased to 267/15.
  • FIG. 1 is a schematic flowchart of a method for determining a scheduling authorization provided by the present invention
  • FIG. 2 is a schematic flowchart of a specific embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a specific process of Embodiment 2 of the present invention. Preferred embodiment of the invention
  • the method for determining an SG provided by the present invention mainly includes the following steps: Step 1: The RNC configures whether the UE uses 16QAM and whether to use E-TFCI boost. Step 2: The UE sends uplink scheduling information to the Node B.
  • Step 3 After receiving the uplink scheduling information of the UE, the Node B performs scheduling on the UE, and calculates a power offset P0 m , ed of the E-DPDCH channel of each UE relative to the DPCCH channel, where (m is the UE number); Converting the scheduling authorization of the UE into a stencil according to the scheduling authorization table (SG table) Authorization (Absolute Grant, AG for short) or Relative Grant (RG).
  • SG table scheduling authorization table
  • Authorization Absolute Grant, AG for short
  • RG Relative Grant
  • Step 4 Node B sends an AG or RG to the UE.
  • Step 5 The UE converts the received AG or RG into a corresponding SG quantized value.
  • Table 4 and Table 5 respectively correspond to the SG quantization tables when Tables 1 and 2 are used; in the present invention, the new A E _ D p DCH quantization table shown in Table 2 is used, and therefore Table 5 is used as Corresponding SG quantization table.
  • the E-DPDCH used by the UE for E-TFC selection according to the last ⁇ is relative to the DPCCH power offset PO m , ed ( PO m , ed AG ranges from 0 to 37 )
  • the UE uses the new ⁇ ⁇ 4) ⁇ ⁇ quantization table, and then uses the corresponding SG quantization in Table 5. Values are: (336/15) 2 ⁇ 4.
  • the UE finds the SG quantized value corresponding to "up”, “down” or “keep unchanged” in the SG quantization table according to the "UP", “DOWN” or “HOLD” commands in the RG. For example, if the RG is "UP” command, the SG quantization value corresponding to "Up” is (377/15) 2 ⁇ 4.
  • the SG quantization value is the SG assigned to the UE by the Node B.
  • the UE must satisfy the actual transmission of the data block: The SG required by the transmitted transport block cannot exceed the SG allocated by the Node B.
  • Step 6 The UE determines the scheduling grant required for each transport block size, and ensures that the selected transport block size does not exceed the scheduling grant sent by the base station.
  • the UE when determining the SG required for a certain transport block size (the E-TFCI corresponding to the transport block size is set to E-TFCI), the UE first calculates the non-quantized E-DPDCH gain required by the ⁇ -TFC according to the prior art. Because p ed i , uq .
  • the UE quantizes the non-quantized value y ⁇ of the power gain factor of each E-DPDCH by using a uniform ⁇ ⁇ 4) ⁇ ⁇ quantization table as follows:
  • ⁇ is a power gain factor of the DPCCH channel, a quantized value of a power gain factor of each of the E-DPDCH channels, and k is a number of the E-DPDCH channel;
  • a ed in is the minimum quantized value of p ed , k l ⁇ £ in the A DPDCH quantization table
  • Ed,max is the maximum quantized value of full fi ed fi ed , k q in the ⁇ -DPDCH quantization table.
  • the power gain factors of the E-DPDCHs are quantized to obtain each E-DPDCH.
  • the Node B performs scheduling authorization on the UE using the same A D p DCH quantization table as the quantization table used by the UE.
  • the main difference between the present invention and the existing scheduling authorization method is that the unified A DPDCH quantization table, that is, the table, is used regardless of whether the UE uses the BPSK or 16QAM modulation mode and whether the UE uses the E-TFCI boost. 2.
  • Step 201 The RNC configures the UE to use 16QAM and does not use E-TFCI boost.
  • Step 202 The UE sends uplink scheduling information to the Node B.
  • Step 203 After receiving the uplink scheduling information of the UE, the Node B performs scheduling on the UE according to the service requirements of the UEs in the cell, the uplink interference level of the cell, the load threshold allowed by the network, and the processing load of the Node B itself.
  • the power offset PO m ed of the E-DPDCH channel of each UE with respect to the DPCCH channel, where m is the UE number.
  • the scheduling authorization of the UE is converted into an absolute authorization (absolute grant, abbreviated as AG) or a relative grant (relative grant, hereinafter referred to as RG) according to a scheduling authorization form (SG table).
  • AG absolute authorization
  • RG relative grant
  • Step 204 Node B sends an AG or RG to the UE.
  • Step 205 The UE converts the received AG or RG into a corresponding SG in Table 4.
  • the SG that the UE must satisfy the transmitted transport block when transmitting the data block cannot exceed the SG received from the Node B.
  • the method for the UE to determine the SG required for a certain transport block size is described as follows: First, according to the number of physical channels used by the ⁇ -TFC and the transport block size, the number of physical channels used by the reference E-TFCI and the transport block size, the gain factor of the reference E-TFCI, the offset of the HARQ Aharq (the Aharq is the data carrying the data) MAC-d flow configured HARQ offset) information calculated E-TFCI, the required non-quantized E-DPDCH gain factor ⁇ , ⁇ .
  • Arf represents the power gain factor of the E-DPDCH channel; , indicating the first E-TFCI; k is
  • the number of the E-DPDCH channel; uq indicates non-quantization.
  • Aharq, reference E-TFCI, and reference E-TFCI PO are all configured by the RNC.
  • ⁇ , ⁇ (7 is quantized as follows: If A ⁇ A is smaller than the minimum quantized value in Table 2, the E-DPDCH ⁇ gain factor is set such that Arf A is the minimum quantized value in Table 2; If A ⁇ A is not less than the minimum quantized value in Table 2, it is set to the maximum quantized value in Table 2 that satisfies A ⁇ A ⁇ .
  • the UE configuration uses 16QAM and does not use E-TFCI boost, its maximum quantization value can reach 377/15, while the prior art can only reach 168/15, so that the maximum rate that can be achieved is improved, so that it can be more fully Play the HSUPA high speed features.
  • Step 301 The RNC configures the UE not to use 16QAM and does not use E-TFCI boost.
  • Step 303 After receiving the uplink scheduling information of the UE, the Node B performs scheduling on the UE according to the service requirements of the UEs in the cell, the uplink interference level of the cell, the load threshold allowed by the network, and the processing load of the Node B itself.
  • the power offset PO m ed of the E-DPDCH channel of each UE with respect to the DPCCH channel, where m is the UE number.
  • the scheduling authorization of the UE is converted into an Absolute Grant (AG) or a Relative Grant (RG) according to a scheduling authorization table (SG table).
  • Step 304 Node B sends an AG or RG to the UE.
  • Step 305 The UE converts the received AG or RG into the corresponding SG in Table 4.
  • the SG that the UE must satisfy the transmitted transport block when transmitting the data block must not exceed the SG received from the Node B.
  • the method for determining the SG required by the UE to determine the size of a transport block (the E-TFCI corresponding to the transport block size is set to E-TFC3 ⁇ 4) is:
  • the pair is quantified as follows: /A is smaller than the minimum quantized value in Table 2, then the gain factor of E-DPDC3 ⁇ 4 is set such that Arf A is the minimum quantized value in Table 2;
  • ⁇ ⁇ / ⁇ is not less than the minimum quantized value in Table 2, and is set to the maximum quantized value in Table 2 that satisfies ⁇ ⁇ ⁇ ⁇ .
  • SG ⁇ (fi ed , k ⁇ where where the physical channels of all E-DPDCHs are summed.
  • the embodiment of the present invention further provides a user equipment for determining a scheduling grant, which includes a scheduling authorization determining unit, which is configured to determine a transport block size for sending uplink data according to scheduling authorization information sent by the base station, where:
  • the scheduling authorization determining unit is further configured to: determine a required scheduling grant (SG) according to the transport block size, and use a unified ⁇ ⁇ 4) ⁇ ⁇ quantization table, required for each E-TFCI corresponding to the transport block size The non-quantized value of the power gain factor of the E-DPDCH is quantized.
  • the scheduling grant determining unit is configured to quantize a non-quantized value of a power gain factor of an E-DPDCH required for each E-TFCI, regardless of whether the UE uses E-TFCI boost and whether the UE is used or not Quadrature Amplitude Modulation (16QAM) is quantized using the ⁇ ⁇ 4 ) ⁇ ⁇ quantization table for E-TFCI >E-TFCI boost.
  • 16QAM Quadrature Amplitude Modulation
  • the scheduling grant determining unit may be configured to quantize the non-quantized value of the power gain factor of each E-DPDCH required for each E-TFCI using the unified A D p DC H quantization table as follows: ed'min ,
  • the quantized value of the power gain factor of each E-DPDCH channel required by the E-TFCI, k is the number of the E-DPDCH channel;
  • A is the power gain factor of the DPCCH channel
  • a ed in is the minimum quantized value of p ed , k l ⁇ £ in the unified A DPDCH quantization table
  • ⁇ ⁇ is the maximum quantized value satisfying A ⁇ A in the A E-DPDCH quantization table.
  • the present invention also provides a base station that performs scheduling authorization on a UE using the same quantization table as the quantization table used by the UE.
  • the present invention simultaneously considers the modulation mode of BPSK, 16QAM, and the usage of E-TFCI Boost, and modifies the quantization table used by the currently used E-DPDCH power gain factor, so that when 16QAM is used and The maximum gain value of the power gain factor of the E-DPDCH when E-TFCI boost is not used is increased from the original 168/15 to 377/15; the power gain factor of the E-DPDCH when 16QAM is not used and E-TFCI boost is not used. The maximum quantized value has increased from 168/15 to 267/15.

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

La présente invention concerne un procédé, un équipement d'abonné et une station de base conçus pour une autorisation d'ordonnancement. Le procédé comprend les étapes au cours desquelles : lorsque l'autorisation d'ordonnancement requise est déterminée en fonction de la taille d'un bloc de transmission, l'UE utilise une table de quantification unifiée ΔE-DPDCH pour quantifier des valeurs de non-quantification d'un facteur de gain de puissance d'un E-DPDCH requis par chaque indication de combinaison de format de transmission améliorée de canal dédié correspondant à la taille du bloc de transmission. La présente invention modifie la table de quantification utilisée par le facteur de gain de puissance de l'E-DPDCH actuellement utilisé, ce qui fait passer la valeur quantifiée maximale du facteur de gain de puissance de l'E-DPDCH de 168/15 à 377/15 lorsqu'on utilise la MAQ-16 sans utiliser l'amplification E-TFCI et fait passer la valeur quantifiée maximale du facteur de gain de puissance de l'E-DPDCH de 168/15 à 267/15 sans utiliser la MAQ-16 ni l'amplification E-TFCI.
PCT/CN2011/078099 2011-06-13 2011-08-08 Procédé, équipement d'abonné et station de base conçus pour une autorisation d'ordonnancement Ceased WO2012171247A1 (fr)

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CN201110157576.5 2011-06-13
CN2011101575765A CN102833841A (zh) 2011-06-13 2011-06-13 一种调度授权的方法、用户设备及基站

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Citations (2)

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Publication number Priority date Publication date Assignee Title
CN101466152A (zh) * 2009-01-05 2009-06-24 中兴通讯股份有限公司 调度授权的确定方法及用户设备
CN101536426A (zh) * 2006-07-06 2009-09-16 交互数字技术公司 通过对可传送的最高有效载荷设置调度许可有效载荷来选择增强型上行链路传输格式组合的无线通信方法

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CN101536426A (zh) * 2006-07-06 2009-09-16 交互数字技术公司 通过对可传送的最高有效载荷设置调度许可有效载荷来选择增强型上行链路传输格式组合的无线通信方法
CN101466152A (zh) * 2009-01-05 2009-06-24 中兴通讯股份有限公司 调度授权的确定方法及用户设备

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