WO2008031252A1 - Procédé et dispositif d'essai evm utilisant des terminaux hsupa amrc à large bande - Google Patents

Procédé et dispositif d'essai evm utilisant des terminaux hsupa amrc à large bande Download PDF

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Publication number
WO2008031252A1
WO2008031252A1 PCT/CN2006/002067 CN2006002067W WO2008031252A1 WO 2008031252 A1 WO2008031252 A1 WO 2008031252A1 CN 2006002067 W CN2006002067 W CN 2006002067W WO 2008031252 A1 WO2008031252 A1 WO 2008031252A1
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Prior art keywords
value
evm
power
transmit power
evm value
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PCT/CN2006/002067
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English (en)
French (fr)
Inventor
Jun Li
Hongli Peng
Zhong Yu
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Zte Corporation
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Publication date
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Priority to PCT/CN2006/002067 priority Critical patent/WO2008031252A1/zh
Publication of WO2008031252A1 publication Critical patent/WO2008031252A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367Power values between minimum and maximum limits, e.g. dynamic range

Definitions

  • the present invention relates to mobile communication technologies, and more particularly to mobile communication systems
  • the WCDMA (Wide-band CDMA) broadband wireless communication system is one of the third generation mobile ⁇ ⁇ system (3G) international standards.
  • HSUPA High Speed Uplink Packet Access
  • HSDPA High Speed Uplink Packet Access
  • HSUPA is studying the measurement method and parameter setting of EVM (Error Vector Magnitude), and there is no conclusion yet.
  • EVM Error Vector Magnitude
  • the present invention has not yet met this requirement, and at the same time overcomes the shortcomings of unreasonable parameter definition in some channel configurations when measuring EVM values in HSUPA in the prior art, and solves the problem that the measured EVM value in the prior art cannot be accurate.
  • the main object of the present invention is to meet the above requirements, and to overcome the shortcomings of undefined parameters in some channel configurations when measuring EVM values in HSUPA in the prior art, to solve the existing measurement in the prior art.
  • the EVM value does not accurately reflect the modulation performance problem.
  • an EVM test method based on an HSUPA WCDMA terminal includes the following steps: First, configuring a number of subchannels of a composite channel, and allocating the power of each subchannel to maximize a transmit power of the terminal; and performing a second step, measuring an EVM value, if the EVM If the value is within the predetermined range, the third step is performed; otherwise, the transmit power is decreased by one back value and then the EVM value is measured. If the EVM value is still not within the predetermined range, the test fails.
  • the third step is performed; in the third step, the transmit power is reduced according to the power change step size, and the EVM value is measured once every time until the minimum transmit power is reduced.
  • configuring the number of subchannels of the composite channel includes: configuring m DCH channels, n HS-DPCCH channels, and k E-DCH channels.
  • the method further includes determining the power change step size. In the method of the present invention, when the transmission power is greater than 16 dBm, the step size is set to ldB, and when the power is less than 16 dBm, the step size is set to 2 dB.
  • the test fails.
  • the backoff value is ldB - 1.5 dB; the maximum value of the transmission power is in the range of 22.5 dBm - 24 dBm.
  • an EVM test apparatus based on an HSUPA WCDMA terminal is provided.
  • the device includes: a configuration module, configured to configure a number of subchannels of the composite channel, and allocate the power of each subchannel to maximize a transmit power of the terminal; and an EVM value measurement module, configured to use the EVM value In the case of a predetermined range, the EVM value is measured after reducing the terminal transmit power according to the power change step; otherwise, the power is reduced by one back value and then the EVM value is measured, if the EVM value is still not present.
  • a configuration module configured to configure a number of subchannels of the composite channel, and allocate the power of each subchannel to maximize a transmit power of the terminal
  • an EVM value measurement module configured to use the EVM value In the case of a predetermined range, the EVM value is measured after reducing the terminal transmit power according to the power change step; otherwise, the power is reduced by one back value and then the EVM value is measured, if the EVM value is still not present.
  • the transmit power adjustment module is configured to: when the power consumption minus '", a backoff value, and then measure the HVM value, when the EVM value is within the predetermined range, The transmit power is reduced according to the power change step size, and the EVM value is measured once every d, once, until the minimum transmit power is reduced.
  • the configuration module configures the number of subchannels of the composite channel, including: configuring m DCH channels, n HS-DPCCI-I channels, and k E-DCH channels; and determining the power Change step size.
  • the configuration module sets the step size to ldB when the transmission power is greater than 16 dBm, and sets the step size to 2 dB when the power is less than 16 dBm.
  • the transmit power adjustment module does not pass the test each time the EVM value is measured, if the EVM value is not within the predetermined range.
  • the fallback value is preferably from 1 dBB to 1.5 dB; and the maximum value of the transmission power is preferably in the range of 22.5 dBm to 24 dBm.
  • the maximum transmit power is different, and the maximum transmit power is allowed to vary in the range of, for example, 22.5dBm - 24dBm, which has certain flexibility.
  • the power variation step size is, for example, ldB when the transmission power is large, and instead, for example, 2 dB in the case of low transmission power.
  • the power varies in steps. This avoids the phenomenon that the measurement is inaccurate due to the EVM changing too fast when the transmission power is large, and can reduce the amount of data measured by d and measured.
  • FIG. 1 is a flow chart of an EVM test according to the present invention
  • FIG. 2 is a schematic diagram of an EVM test system according to the present invention
  • FIG. 3 is a flow chart of an EVM conformance test of an HSUPA WCDMA terminal according to an embodiment of the present invention.
  • FIG. 4 is a diagram showing a different DPDCH channel, one HS-DPCCH channel, two E-DPCHCH channels and one E-DPCCH channel combined with different transmit powers and different values according to an embodiment of the present invention.
  • Figure 5 is a schematic diagram of an EVM test apparatus according to the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention are described with reference to the accompanying drawings.
  • 2 is a schematic diagram of an EVM test system according to the present invention.
  • the system 200 of the EVM test of the present invention includes a measurement device 202, a measurement adjustment device 204, and a terminal 206.
  • the main technical solution of the present invention is as follows: First, channel configuration is performed, combining "" DCH channels, "HS-DPCCH channels and k E-DCH channels into a composite channel, and configuring corresponding A, A, A. And the value of ⁇ '., so that the terminal is in the state of maximum transmit power (24dBm). Determine the power change step size. When the transmit power is greater than 16dBm, set the step size to IdB. When the power is less than 16dBm, the step size is set to 2dB, and the power backoff value IdB-1.5dB is determined according to the configuration of the composite channel. Then, measure if the EVM value is exceeded.
  • FIG. 1 is a flow chart of the EVM test of the present invention. The technical solution of the present invention will be described in detail below with reference to FIG. 1. As shown in FIG. 1. As shown in FIG. 1.
  • step S101 is performed, channel configuration is performed, and in step 3, S103 is performed to perform channel energy allocation.
  • step S105 the terminal is adjusted to the maximum transmission power.
  • step S107 the EVM value is tested. If it is determined in step S109 that the EVM value exceeds the standard (predetermined range), it is determined whether the transmission power is less than the maximum power. The rate is subtracted from the power backoff value, and if not, the process is performed in step S113, and the test fails. Otherwise, in the case where it is judged according to S109 that the EVM value does not exceed the standard, the step S115 is executed to reduce the terminal transmission power.
  • step S117 It is then judged in step S117 whether it is less than the minimum transmission power, and if so, then step S119 is performed and the test passes, otherwise, the process returns to step S107.
  • configuring the channel in the step includes configuring the number of subchannels of the composite channel, adjusting the beta value and the slot offset of the DPCH channel relative to the channels E-DPCCH and E-DPDCH.
  • step S303 channel energy allocation is performed, including all subchannel power allocation, that is, each subchannel beta initial value is set.
  • steps S305 and S307 an HSUPA call is established to maximize the terminal transmit power, for example 24 dBm.
  • the receiving end measures the EVM value at step S309.
  • step S311 it is determined that if the EVM value is greater than 17.5%, steps S329 and S331 are performed, and the maximum transmit power is backed off by ldB-1.5dB, and then the EVM is measured. If the result of the determination is less than 17.5% in step S333, step S313 is performed.
  • the transmit power at the time is the maximum transmit power; if it is still greater than 17.5%, this gives information that the test cannot pass in Step S335.
  • step S315 the power change step size is determined according to the size of the terminal transmit power at this time, and the step size is ldB when it is greater than 16 dBm, that is, in step 3 ⁇ 4 S317, the power is decreased by ldB, otherwise, step i S319 is performed, and the power is reduced by 2 dB. .
  • step S321 the terminal transmission power is reduced according to the step size, and 'EVM is measured. It is judged at step S323 whether or not the EVM value is normal. For all required beta values, all EVM measurements must be less than 17.5%.
  • step S315 If the judgment result is less than 17.5%, the process returns to step S315 until the minimum transmission power is less than or equal to - 20 dBm, and step S327 is performed to pass the test. Otherwise, if the judgment result is greater than 17.5%, then proceed to step S335, and the test cannot pass.
  • Figure 4 shows the measured data curve of EVM for a set of composite channels with different transmit power and different beta values under one channel configuration scheme.
  • the EVM is tested by increasing the transmit power by 2 dB.
  • the transmit power approaches the maximum transmit power
  • the EVM performance value deteriorates exponentially, and there is a very significant inflection point in the curve indicating that the amplifier has entered the nonlinear operating region.
  • the EVM value changes rapidly, and the slope of the curve in the graph is large.
  • the step size of the transmission power is reduced to ldB. If the EVM value exceeds the allowable value of 17.5% under the condition of the maximum allowable transmit power of 24dBm, then the maximum transmit power is reduced by a small value (power back-off ldB-1.5dB or so) and the EVM value can be greatly reduced.
  • FIG. 5 is a schematic illustration of an EVM test apparatus in accordance with the present invention.
  • the EVM testing device 500 includes a configuration module 502, an EVM value measurement module 504, and a transmit power adjustment module 506.
  • the configuration module 502 is configured to configure the number of subchannels of the composite channel, and allocate the power of each subchannel, so that the transmit power of the terminal is a maximum value.
  • the EVM value measurement module 504 is configured to: after the EVM value is within a predetermined range, reduce the EVM value according to the power change step size, and then measure the EVM value; otherwise, reduce the power by one back value and measure the EVM. Value, if the EVM value is still not within the predetermined range, the test fails.
  • the transmit power adjustment module 506 is configured to: when the EVM value is within the predetermined range when the power is reduced by one backoff value, and the EVM value is within the predetermined range, reduce the transmit power according to the power change step, and each subtraction] Once, measure the EVM value once until it is reduced to the minimum transmit power.
  • the configuration module 502 can be configured to configure the number of subchannels of the composite channel, including: configuring m DCH channels, n HS-DPCCH channels, and k E-DCH channels; and determining the power variation step size.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

基于 HSUPA WCDMA终端的 EVM测试方法和装置
技术领域 本发明涉及移动通信技术, 尤其涉及移动通信系统
WCDMA HSUPA终端 EVM—致性测试方法。 背景技术
WCDMA ( Wide-band CDMA ) 宽带无线通 ^言系统是第三 代移动 ϋ ί言系统 (3G ) 国际标准之一。 HSUPA ( High Speed Uplink Packet Access, 高速上行链路分组接入) 是在基本不改 变现有硬件的前提下, 进一步提高上行链路信道容量, 提高带 宽利用率的有效技术,并且与 HSDPA和 R99兼容,是 WCDMA 系统发展的演进方向。
HSUPA正在对 EVM ( Error Vector Magnitude )的测量方法 和参数设定进行研究, 目前尚无定论。 此外, 目前还没有满足 此项要求、 同时能克服现有技术中对 HSUPA 中 EVM值测量 时存在一些信道配置中参数界定不合理的缺点、 解决现有技术 中存在测量出的 EVM值不能精确的反映出调制性能的问题的 有效解决方案。 发明内容 鉴于以上问题, 本发明的主要目的是为了满足上述要求, 同时为了克服现有技术中对 HSUPA 中 EVM值测量时存在一 些信道配置中参数界定不合理的缺点, 解决现有技术中存在测 量出的 EVM值不能精确的反映出调制性能的问题。 为了实现本发明的上述目的, 根据本发明的一个方面, 提 供了一种基于 HSUPA WCDMA终端的 EVM测试方法。 该方法包括以下步骤: 第一步骤, 配置复合信道各子信道 数量, 并分配所述各子信道功率, 使所述终端的发射功率为最 大值; 第二步骤, 测量 EVM值, 如果所述 EVM值在预定范围 内, 则执行第三步骤; 否则, 将所述发射功率减小一个回退值 后再测量所述 EVM值,如果所述 EVM值仍不在所述预定范围 内, 则测试不通过; 否则, 执行第三步據; 第三步驟, 根据功 率变化步长减小发射功率, 每减小一次, 测量一次所述 EVM 值, 直到减小至最小发射功率。 在所述第一步骤中, 配置复合信道各子信道数量包括: 配 置 m个 DCH信道、 n个 HS-DPCCH信道、 和 k个 E- DCH信 道。 在所述第一步聚中, 还包括确定所述功率变化步长。 在本发明的方法中, 当发射功率大于 16dBm时, ^夺所述步 长设置为 ldB , 当功率小于 16dBm时,将所述步长设置为 2dB。 在所述第三步骤中, 每次测量所述 EVM值的过程中, 如 果所述 EVM值不在所述预定范围内, 则测试不通过。 在本发明的方法中, 优选的是, 回退值为 ldB- 1.5dB; 发 射功率的最大值在 22.5dBm- 24dBm范围内。 才艮据本发明的另一方面,提供了一种基于 HSUPA WCDMA 终端的 EVM 测试装置。 该装置包括: 配置模块, 用于配置复 合信道各子信道数量, 并分配所述各子信道功率, 使所述终端 的发射功率为最大值; EVM值测量模块, 用于在所述 EVM值 在预定范围内的情况下, 才艮据功率变化步长减小终端发射功率 后再测量 EVM值; 否则 将功率减小一个回退值后再测量所 述 EVM值, 如果所述 EVM值仍不在所述预定范围内, 则测试 不通过; 发射功率调整模块, 用于在功率减 '」、一个回退值后再 测量所述 HVM值时所述 EVM值在所述预定范围内的情况下, 根据所述功率变化步长减小发射功率, 每减 d、一次, 测量一次 所述 EVM值, 直到减小至最小发射功率。 在本发明中, 优选的是, 配置模块配置复合信道各子信道 数量包括: 配置 m个 DCH信道、 n个 HS- DPCCI- I信道、 和 k 个 E-DCH信道; 还用于确定所述功率变化步长。 另外, 优选的是, 配置模块在发射功率大于 16dBm时, 将 所述步长设置为 ldB , 在功率小于 16dBm时, 将所述步长设置 为 2dB。 发射功率调整模块在每次测量所述 EVM值的过程中, 如 果所述 EVM值不在所述预定范围内, 则测试不通过。 此外, 在本发明的装置中, 回退值优选为 ldB- 1.5dB; 发 射功率的最大值优选为在 22.5dBm- 24dBm范围内。 本发明获得了如下有益效果:
1 )才艮据信道配置不同., 其最大发射功率有所不同, 最大发 射功率允许在例如 22.5dBm- 24dBm范围内变化,具有一定的灵 活性。
2 )采用非均匀功率变化步长, 在发射功率较大时功率变化 步长为例如 ldB , 相反, 在低发射功率的情况下采用例如 2dB 的功率变化步长。 这样避免了因发射功率较大时 EVM 变化过 快造成测量不准的现象, 同时可以减 d、测量的数据量。
3 )最大发射功率回退例如 ldB-1.5dB , 能减小放大器的非 线性性对 EVM值恶化的影响,所测 EVM值更能准确的反映出 射频端调制特性。 附图说明 附图用来提供对本发明的进一步理解, 并且构成说明书的 —部分, 与本发明的实施例一起用于解释本发明, 并不构成对 本发明的限制。 在附图中: 图 1是根据本发的 EVM测试流程图; 图 2是才艮据本发的 EVM测试系统示意图; 图 3是根据本发明的一个实施例的 HSUPA WCDMA终端 EVM一致性测试流程图; 图 4是才艮据本发明的一个实施例的 1条 DPDCH信道, 1 条 HS- DPCCH信道, 2条 E- DPDCH信道和 1条 E- DPCCH信 道复合下不同发射功率和不同 值时的 EVM测量值曲线图; 图 5是才艮据本发明的 EVM测试装置的示意图。 具体实施方式 以下结合附图对本发明的优选实施例进行说明,应当理解, 此处所描述的优选实施例仅用于说明和解释本发明 , 并不用于 限定本发明。 图 2是才艮据本发的 EVM测试系统示意图。 本发明所述 EVM测试的系统 200包括测量装置 202、测量 调整装置 204以及终端 206。 本发明的主要的技术方案如下: 首先, 进行信道配置, 将'"个 DCH信道, "个 HS-DPCCH 信道和 k个 E-DCH信道组合成一复合信道, 并且配置相应 A , A , A. , 和 Α'.、的值, 使得终端处在最大发射功率 (24dBm ) 状态。 确定功率变化步长, 当发射功率大于 16dBm时, 设置步 长为 IdB , 当功率小于 16dBm时, 步长设置为 2dB , 并才艮据复 合信道的配置确定功率回退值 IdB- 1.5dB。 然后,测量 EVM值是否超标。如果 EVM值在正常范围内, 则按照功率变化步长减小终端发射功率测量 EVM值; 如果异 常, 则功率减小一个回退值后测量 EVM, 此时如果 EVM依然 异常, 则 jth测试不通过; 若正常, 继续执行下一步。 最后, 按功率变化步长减小发射功率直至最小发射功率, 测量 EVM值。 每减小一次, 测量一次 EVM。 在此过程中, 任 何一次 EVM值的异常均表示此测试不能通过。 图 1是 居本发明的 EVM测试流程图。 下面结合图 1对 本发明的技术方案进行详细说明。 如图 1所示, 在步 3聚 S 101 , 进行信道配置, 在步 3聚 S 103 , 进行信道能量分配, 在步據 S 105 , 调整终端至最大发射功率。 然后, 在步 S 107 , 测试 EVM值, 如果在步骤 S 109判 断 EVM值超标(预定范围), 则判断发射功率是否小于最大功 率减去功率回退值, 如果不是, 则执 4于步骤 S113 , 测试不通过。 否则, 执行步 ·¾ 8115、 S117、 S119o 在步據 S 109判断 E VM值不超标的情况下,执行步骤 S 115 , 减小终端发射功率。然后在步骤 S117判断是否小于最小发射功 率,如果是,则执 4亍步骤 S119,测试通过,否则,返回步骤 S107。 图 3是根据本发明的一个实施例的 HSUPA WCDMA终端 EVM一致性测试流程图。 如图 3所示, 在步 对信道进行配置, 包括配置复 合信道各子信道数量, 调整 beta值和 DPCH信道相对于信道 E-DPCCH和 E- DPDCH的时隙偏移。 在步驟 S303 ,执行信道能量分配,包括分配各子信道功率, 即设置各子信道 beta初值。 在步骤 S305和 S307, 建立 HSUPA呼叫, 使终端发射功 率为最大值, 例 24dBm。 接着, 在步驟 S309接收端测量 EVM值。 在步操 S311进行判断, 如果 EVM值大于 17.5%, 执行步 骤 S329和 S331 , 最大发射功率回退 ldB-1.5dB后测量 EVM, 在步骤 S333如判断结果为小于 17.5%, 执行步骤 S313 , 设置 此时的发射功率为最大发射功率; 如依然大于 17.5%, 则此在 步尊 S335给出测试不能通过的信息。 在步驟 S315 , 4艮据此时终端发射功率大小确定功率变化步 长, 大于 16dBm时步长为 ldB , 即, 在步 ¾ S317, 功率减小 ldB , 否则, 执行步 i S319, 功率减小 2dB。 接着, 在步骤 S321依据步长减小终端发射功率, 测量' EVM。 在步骤 S323 判断 EVM值是否正常。 对所有要求的 beta 值, 所有的 EVM测量值都必须小于 17.5%。 如果判断结果为小于 17.5%, 返回步骤 S315 , 直到最小发 射功率小于等于— 20dBm, 执行步骤 S327, 通过测试。 否则如果 判断结果为大于 17.5%, 则执 4于步骤 S335 , 测试不能通过。 图 4显示了一组复合信道在一种信道配置方案下不同发射 功率和不同 beta值时的 EVM的测量数据曲线。 其中信道配置为 1条 DPDCH信道, 1条 HS-DPCCH信道, 2条 E-DPDCH信道和 1条 E-DPCCH信道,各信道功率参数设 定为 A = l , A/A = 15/ 15,AtJA = 15/ 15 , Α,' /Α· = 5/ 15 , 在 L / Α变 ^匕的条件 下 EVM测量值随发射功率的变化曲线, 每一条曲线对应一个 值。 图中数据显示当发射功率较小时, 射频放大器工作在 线性段, EVM值的变化很小, 此时按步长为 2dB增加发射功 率测试 EVM。 然而, 随着发射功率接近最大发射功率, EVM 性能值恶化速度加快, 曲线中存在非常明显的拐点说明放大器 进入了非线性工作区。 此时的 EVM值变化较快, 表现为图中 的曲线的斜率很大。 当 EVM值变化较快时, 则减小发射功率 变化步长为 ldB。 如果在最大允许发射功率 24dBm 的条件下 EVM值超出了允许值 17.5%时, 则降低最大发射功率一个很小 的值(功率回退 ldB- 1.5dB左右)EVM值便能较大幅度的减小, 回到允许值范围内。 图 5是才艮据本发明的 EVM测试装置的示意图。 如图 5所示, EVM测试装置 500包括配置模块 502、 EVM 值测量模块 504、 以及发射功率调整模块 506。 配置模块 502用于配置复合信道各子信道数量, 并分配所 述各子信道功率, 使所述终端的发射功率为最大值。
EVM值测量模块 504用于在所述 EVM值在预定范围内的 情况下, 根据功率变化步长减小终端发射功率后再测量 EVM 值;否则,将功率减小一个回退值后再测量 EVM值,如果 EVM 值仍不在预定范围内, 则测试不通过。 发射功率调整模块 506 , 用于在功率减小一个回退值后再 测量所述 EVM值时 EVM值在所述预定范围内的情况下,根据 功率变化步长减小发射功率, 每减 '】、一次, 测量一次 EVM值, 直到减小至最小发射功率。 配置模块 502可以用于配置复合信道各子信道数量包括: 配置 m个 DCH信道、 n个 HS-DPCCH信道、 和 k个 E- DCH 信道; 还用于确定所述功率变化步长。 以上所述仅为本发明的优选实施例而已, 并不用于限制本 发明, 对于本领域的技术人员来说, 本发明可以有各种更改和 变化。 凡在本发明的精神和原则之内 , 所作的任何修改、 等同 替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1. 一种基于 HSUPA WCDMA终端的 EVM测试方法, 其特 征在于, 包括以下步骤:
第一步骤, 配置复合信道各子信道数量, 并分配所述 各子信道功率, 使所述终端的发射功率为最大值;
第二步骤, 测量 EVM值, 如果所述 EVM值在预定 范围内, 则执行第三步驟, 否则, 将所述发射功率减小一 个回退值后再测量所述 EVM值, 如果所述 EVM值仍不 在所述预定范围内, 则测试不通过, 否则,执行第三步驟; 第三步驟, 根据功率变化步长减小所述发射功率, 每 减小一次, 测量一次所述 EVM值, 直到减小至最小发射 功率。
2. 根据权利要求 1所述的方法, 其特征在于, 在所述第一步 骤中, 配置复合信道各子信道数量包括: 配置 m个 DCH 信道、 n个 HS-DPCCH信道、 和 k个 E- DCH信道。
3. ^ 居.权利要求 1所述的方法, 其特征在于, 在所述第一步 骤中, 还包括确定所述功率变化步长。
4. 根据权利要求 3所述的方法, 其特征在于, 当发射功率大 于 16dBm时,将所述步长设置为 ldB ,当功率小于 16dBm 时, 将所述步长设置为 2dB。 根据权利要求 1所述的方法, 其特征在于, 在所述第三步 驟中, 每次测量所述 EVM值的过程中, 如果所述 EVM 值不在所述预定范围内, 则测试不通过。
6. 根据权利要求 1至 5中任一项所述的方法, 其特征在于, 所述回退值为 ldB- 1.5dB。
7. 根据权利要求 1至 5中任一项所述的方法, 其特征在于, 所述发射功率的最大值在 22.5dBm-24dBm范围内。
8. —种基于 HSUPA WCDMA终端的 EVM测试装置, 其特 征在于, 包括: 配置模块, 用于配置复合信道各子信道数量, 并分配 所述各子信道功率, 使所述终端的发射功率为最大值;
EVM值测量模块, 用于在所述 EVM值在预定范围 内的情况下,才艮据功率变化步长减小终端发射功率后再测 量所述 EVM值; 否则, 将所述发 4†功率减'〗、一个回退值 后再测量所述 EVM值, 如果所述 EVM值仍不在所述预 定范围内, 则测试不通过;
发射功率调整模块,用于在所述发射功率减' j、一个回 退值后再测量所述 EVM值时所述 EVM值在所述预定范 围内的情况下, 根据所述功率变化步长减小发射功率, 每 减' j、一次, 测量一次所述 EVM值, 直到减小至最小发射 功率。
9. 根据权利要求 8所述的装置, 其特征在于, 所述配置模块 配置复合信道各子信道数量包括: 配置 m个 DCH信道、 n个 I- IS-DPCCH信道、 和 k个 E-DCH信道。
10. 根据权利要求 8所述的装置, 其特征在于, 所述配置模块 还用于确定所述功率变^ i步长。
11. 根据权利要求 10所述的装置, 其特征在于, 所述配置模 块在发射功率大于 16dBm时, 将所述步长设置为 ldB, 在功率小于 i6dBm时, 将所述步长设置为 2dB。
12. 根据权利要求 8所述的装置, 其特征在于, 所述发射功率 调整模块在每次测量所述 EVM 值的过程中, 如果所述 EVM值不在所述预定范围内, 则测试不通过。
13. 根据权利要求 8至 12中任一项所述的装置,其特征在于, 所述回退值为 ldB-1.5dB。 才艮据权利要求 8至 12中任一项所述的装置,其特征在于, 所述发射功率的最大值在 22.5dBm-24dBm范围内。
PCT/CN2006/002067 2006-08-15 2006-08-15 Procédé et dispositif d'essai evm utilisant des terminaux hsupa amrc à large bande WO2008031252A1 (fr)

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