WO2015062012A1 - Procédé, appareil et système de mesure de phase - Google Patents

Procédé, appareil et système de mesure de phase Download PDF

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Publication number
WO2015062012A1
WO2015062012A1 PCT/CN2013/086293 CN2013086293W WO2015062012A1 WO 2015062012 A1 WO2015062012 A1 WO 2015062012A1 CN 2013086293 W CN2013086293 W CN 2013086293W WO 2015062012 A1 WO2015062012 A1 WO 2015062012A1
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WIPO (PCT)
Prior art keywords
rru
phase
test signal
value
time
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Ceased
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PCT/CN2013/086293
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English (en)
Chinese (zh)
Inventor
毕晓艳
戎璐
郭文婷
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2013/086293 priority Critical patent/WO2015062012A1/fr
Priority to CN201380077711.2A priority patent/CN105324955B/zh
Publication of WO2015062012A1 publication Critical patent/WO2015062012A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the present invention relates to the field of communications, and in particular, to a phase measurement method, apparatus, and system. Background technique
  • phase difference between the measured RRUs is mainly measured by the following method:
  • the user equipment acquires a set of coordinated cells, and uses a downlink pilot signal of each coordinated cell in the set to use a channel vector corresponding to a transmitting antenna of the user equipment and a base station of the base station where the user equipment is located as a reference, and then reuses A receiving antenna of the user equipment is compared with a channel vector corresponding to a transmitting antenna of a base station where the cooperative cell is located, and a phase difference of the coordinated cell with respect to the user equipment home cell is determined by an estimation operation. The user equipment then feeds back the phase difference of the coordinated cell with respect to the home cell to the base station through the air interface, so that the base station acquires the phase difference between the RRU in the coordinated cell and the RRU in the home cell according to the feedback information.
  • Embodiments of the present invention provide a phase measurement method, apparatus, and system, which can improve the phase difference accuracy of measurement to meet the performance requirements of cooperative communication.
  • an embodiment of the present invention provides a phase measurement method, including: Receiving, in a first time window, a first test signal sent by the first RRU, and measuring a first received time value when the power or amplitude of the first test signal received in the first time window is the lowest;
  • the first test signal is constant in power or amplitude when the first RRU sends the first test signal, and the phase of the first test signal is phase rotated at a preset phase rotation speed;
  • the determining, by the preset phase rotation speed, the time difference value, and the time interval value, a phase difference between the first RRU and the second RRU includes:
  • phase difference obtained by subtracting the third phase value from the first phase value is used as a phase difference between the first RRU and the second RRU.
  • the calculating, by the preset phase rotation speed, the time difference value, and the time interval value, the first RRU and the second RRU After the phase difference between the two, the method further includes:
  • the method further includes: Transmitting, to the first RRU, first time window configuration information for configuring a length and/or a location of the first time window, to enable the first RRU to configure the first time according to the first time window configuration information The length and/or position of a time window; and/or
  • the method further includes: Transmitting, by the first RRU, first rotation step size configuration information for configuring a rotation step of the phase rotation of the first test signal, so that the first RRU configures the first rotation step according to the first rotation step configuration information.
  • the rotation step of the first test signal and/or
  • an embodiment of the present invention provides a phase measuring apparatus, including: a first measuring unit, a second measuring unit, and a calculating unit, where:
  • the first measuring unit is configured to receive a first test signal sent by the first radio remote unit RRU in a first time window, and measure the first test signal received in the first time window.
  • the first receiving time value when the power or the amplitude is the lowest; wherein the power or amplitude of the first test signal when the first RRU sends the first test signal is constant, and the phase of the first test signal is Preset the phase rotation speed for phase rotation;
  • the second measuring unit is configured to receive a second test signal sent by the second RRU in the second time window, and measure that the power or amplitude of the second test signal received in the second time window is the lowest a second receiving time value of the second test signal; wherein the power or amplitude of the second test signal when the second RRU sends the second test signal is constant, and the phase of the second test signal is determined by the preset Phase rotation speed for phase rotation;
  • the calculating unit is configured to calculate a phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value; wherein the time difference is Determining a difference between the first received time value and the second time received value, the time interval value indicating A time interval between the first time window and the second time window.
  • the calculating unit is further configured to: perform multiplication on the preset phase rotation speed and the time difference value to obtain a first phase value; and set the preset Multiplying a phase rotation speed by the time interval value to obtain a second phase value, adding the second phase value to a specific phase value to obtain a third phase value; and subtracting the first phase value from the first phase value
  • the phase difference obtained by the three phase values is used as a phase difference between the first RRU and the second RRU.
  • the device further includes: an acquiring unit, configured to perform, according to the plurality of different time points, between the first RRU and the second RRU The phase difference acquires a phase jitter state between the first RRU and the second RRU.
  • the device further includes: a configuration unit, configured to send, to the first RRU, first time window configuration information for configuring a length and/or a location of the first time window, so that the first RRU is configured according to the first time window Information configuring the length and/or position of the first time window; and/or
  • a second configuration unit configured to send, to the second RRU, second time window configuration information for configuring a length and/or a location of the second time window, so that the second RRU is according to the second time
  • the window configuration information configures the length and/or position of the second time window.
  • the device further includes: a configuration unit, configured to send, to the first RRU, first rotation step size configuration information for configuring a rotation step of the phase rotation of the first test signal, so that the first RRU is according to the first rotation
  • the step size configuration information configures a rotation step size of the first test signal
  • a fourth configuration unit configured to send second rotation step configuration information for configuring a rotation step of the phase rotation of the second test signal to the second RRU, so that the second RRU is according to the
  • the second rotation step configuration information configures a rotation step size of the second test signal.
  • an embodiment of the present invention provides a phase measurement system, including: a first RRU, a second RRU, and a measurement device, where:
  • the first RRU is configured to send a first test signal to the measuring device in a first time window, where the first test signal is power when the first RRU sends the first test signal or The amplitude of the first test signal is constant, and the phase of the first test signal is rotated at a preset phase rotation speed; the measuring device is configured to measure the power of the first test signal received in the first time window Or the first reception time value when the amplitude is the lowest;
  • the second RRU is configured to send a second test signal to the measuring device in a second time window, where the power or amplitude of the second test signal when the second RRU sends the second test signal Constant, and the phase of the second test signal is phase rotated at the preset phase rotation speed;
  • the measuring device is further configured to measure a second receiving time value when the power or amplitude of the second test signal received in the second time window is the lowest;
  • the measuring device is further configured to calculate a phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value; wherein the time difference is Determining a difference between the first received time value and the second time received value, the time interval value indicating a time interval between the first time window and the second time window.
  • an embodiment of the present invention provides a phase measuring apparatus, including: a receiver and a memory, and a processor respectively connected to the receiver and the memory, wherein the memory is used to store a set of program codes, where The processor is configured to invoke the program code to perform the following operations:
  • the receiver Receiving, by the receiver, a first test signal sent by the first remote radio unit RRU in a first time window, and measuring a minimum power or amplitude of the first test signal received in the first time window a first receiving time value; wherein, the first test signal has a constant power or amplitude when the first RRU transmits the first test signal, and a phase of the first test signal is rotated by a preset phase Speed is phase rotated;
  • the operation of the phase difference includes:
  • phase difference obtained by subtracting the third phase value from the first phase value is used as a phase difference between the first RRU and the second RRU.
  • the processor after performing the performing, calculating the first according to the preset phase rotation speed, the time difference value, and the time interval value After the operation of the phase difference between the RRU and the second RRU, the following operations are also performed:
  • the apparatus further includes a transmitter, The processor is further configured to perform the following operations:
  • first time window configuration information for configuring a length and/or a location of the first time window to the first RRU, to configure the first RRU according to the first time window Information configuring the length and/or position of the first time window;
  • Second time window configuration information for configuring a length and/or a location of the second time window to the second RRU, to configure the second RRU according to the second time window
  • the information configures the length and/or position of the second time window.
  • the apparatus further includes a transmitter, The processor is further configured to perform the following operations:
  • first rotation step configuration information for configuring a rotation step of phase rotation of the first test signal to the first RRU, so that the first RRU is according to the first rotation
  • the step size configuration information configures a rotation step size of the first test signal; and/or Transmitting, by the transmitter, second rotation step configuration information for configuring a rotation step of phase rotation of the second test signal to the second RRU, so that the second RRU is according to the second rotation
  • the step size configuration information configures a rotation step size of the second test signal.
  • the first test signal sent by the first RRU is received in the first time window, and the first power or the amplitude of the first test signal received in the first time window is measured to be the first Receiving a time value; receiving a second test signal sent by the second RRU in the second time window, and measuring a second receive when the power or amplitude of the second test signal received in the second time window is the lowest a time value; calculating a phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value.
  • the test signal sent by the RRU can be directly measured to calculate the phase difference between the RRUs.
  • the phase difference is fed back by using the air interface resource by the user equipment, and the embodiment of the present invention can improve the phase difference precision of the measurement to meet the requirements. Performance requirements for collaborative communications.
  • FIG. 1 is a schematic flow chart of a phase measurement method according to an embodiment of the present invention.
  • FIG. 2 is a schematic flow chart of another phase measurement method according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of an optional phase rotation according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a phase measuring device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a phase measuring apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a phase measuring device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another phase measuring apparatus according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of another phase measuring apparatus according to an embodiment of the present invention
  • FIG. 9 is another embodiment of the present invention
  • FIG. 10 is a schematic structural diagram of another phase measuring apparatus according to an embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of a phase measuring system according to an embodiment of the present invention.
  • the first RRU may be an RRU included in a certain base station
  • the second RRU may be an RRU included in another base station.
  • the first RRU and the second RRU may be two included in the same base station. RRU.
  • the phase difference between the first RRU and the second RRU may be understood as the phase difference between the two different base stations.
  • FIG. 1 is a schematic flowchart of a phase measurement method according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:
  • the first test signal may be a time continuous test signal, for example, a time continuous test signal in the first time window; or the first test signal is a time-discrete test signal.
  • the first receiving time value when the power or the amplitude of the first test signal received in the first time window is the lowest in the first time window may be: collecting multiple in the first time window.
  • the acquisition time is taken as the first reception time described above.
  • the length of the first time window is 360 microseconds (us)
  • the phase of the first test signal in the first time window is rotated by 360 degrees, that is, the preset phase rotation speed is 1 degree per us.
  • step 101 can collect the power value or amplitude value of the first test signal of 360 different phases, and then select the lowest power value or amplitude value from the 360 power values or amplitude values. Thereby, the above first reception time value is obtained.
  • the power and amplitude of the first test signal may be two parallel parameters, that is, when the power of the first test signal is measured in step 101, then the amplitude of the first test signal may not be measured, and the same reason. When the amplitude of the first test signal is measured, the power of the first test signal may not be measured.
  • the power or the amplitude of the first test signal when the first test signal is sent by the first RRU may be the power of the first test signal when the first test signal is acquired by the first RRU.
  • the amplitude is constant, for example: the power or amplitude of the first test signal generated by the first RRU is constant, or the power or amplitude of the first test signal sent by the first RRU to other devices (eg, other base stations) is constant. That is, the power or amplitude of the first test signal is constant before the first test signal is transmitted.
  • the power or amplitude of the first test signal is often affected by the first RRU characteristic or the transmission network during the transmission process.
  • the first RRU generates a carrier leakage when transmitting the first test signal, so that At the time of the carrier leakage, the power or amplitude of the first test signal may decrease, that is, the power or amplitude of the first test signal received by step 101 at this time may be relatively low. Therefore, the power or amplitude of the first test signal received in step 101 can be changed. For example, when the phases of the first test signals are different, the power or amplitude of the first test signal can be different.
  • the phase of the first test signal is rotated at a preset phase rotation speed.
  • the phase of the first test signal is time-varying.
  • the preset phase rotation speed is 1 rotation per us. Degree
  • the phase of the above first test signal is rotated by 1 degree per lus.
  • the first RRU itself has a phase, that is, the first test signal may be phase-rotated with the phase of the first RRU as the starting phase, that is, the phase of the first test signal transmission time is first.
  • the phase of the RRU is
  • 102 Receive a second test signal sent by the second RRU in a second time window, and measure a second receive when the power or amplitude of the second test signal received in the second time window is the lowest. a time value; wherein, the second test signal has a constant power or amplitude when the second RRU sends the second test signal, and a phase of the second test signal is phased at the preset phase rotation speed Rotate.
  • the description of the second test signal and the power of the second test signal may be specifically described above with reference to the first test signal.
  • the second test signal may also be equivalent to the first test signal, for example: power or amplitude is equal, and phase rotation steps are equal.
  • the step of the phase rotation may specifically refer to an angle of the phase rotation of the test signal in the time window (for example: the phase rotation step of the first test signal may be the angle of the phase rotation of the first test signal in the first time window) ).
  • the power or amplitude of the second test signal may be different from the power or amplitude of the first test signal, or the step of the phase rotation of the second test signal is different from the step of the phase rotation of the first test signal. of.
  • the first time window and the second time window may be two time windows in which there is no time overlap, that is, the time interval exists between the first time window and the second time window.
  • the phase difference between the first RRU and the second RRU may specifically refer to a difference between a phase of the first RRU and a phase of the second RRU.
  • the foregoing first RRU may specifically represent one or more RRUs
  • the second RRU may specifically represent one or more RRUs, when the first RRU represents multiple RRUs, or the second RRU represents multiple RRUs.
  • the above method can calculate the phase difference between at least three RRUs.
  • the foregoing method is specifically applicable to any device that can receive signals sent by multiple RRUs, that is, the device can implement the foregoing method.
  • the device can implement the foregoing method.
  • base station Joint Processing (JP) device
  • JP Joint Processing
  • the first test signal sent by the first RRU is received in the first time window, and the first power or the amplitude of the first test signal received in the first time window is measured to be the first Receiving a time value; receiving a second test signal sent by the second RRU in the second time window, And measuring a second receiving time value when the power or amplitude of the second test signal received in the second time window is the lowest; calculating according to the preset phase rotation speed, the time difference value, and the time interval value a phase difference between the first RRU and the second RRU. In this way, the test signal sent by the RRU can be directly measured to calculate the phase difference between the RRUs.
  • FIG. 2 is a schematic flowchart diagram of another phase measurement method according to an embodiment of the present invention. As shown in FIG. 2, the method includes:
  • 201 Receive a first test signal sent by the first radio remote unit RRU in a first time window, and measure a power or a minimum amplitude of the first test signal received in the first time window. a receiving time value; wherein, the power or amplitude of the first test signal when the first RRU sends the first test signal is constant, and the phase of the first test signal is phased at a preset phase rotation speed Rotate.
  • the power or amplitude of the second test signal when the second RRU sends the second test signal is constant, and the phase of the second test signal is phase rotated at the preset phase rotation speed.
  • the receiving the first test signal and receiving the second test signal may be that the first test signal and the second test signal are received by the combiner, and specifically, the combiner may be combined with the first RRU.
  • the second RRU is connected.
  • the measuring the first receiving time value may be: calculating the first time value by measuring power or amplitude values of a plurality of time points of the first test signal after being combined by the combiner. Similarly, the second time received value is calculated.
  • the specific phase value may specifically represent a phase in which the first test signal is rotated by the phase rotation in the first time window.
  • the phase of the first test signal rotated by the phase rotation in the first time window is 2 ⁇
  • the specific phase value is 2 ⁇
  • the phase of the first test signal rotated by the phase rotation in the first time window is 1 ⁇ .
  • phase rotated by the phase rotation of the second test signal in the second time window may be equivalent to the phase rotated by the phase rotation of the first test signal in the first time window, and may not be equivalent to the first The phase at which the test signal is rotated by the phase rotation in the first time window.
  • step 203 may specifically calculate a phase difference between the first RRU and the second RRU by using the following formula:
  • At represents the time difference value
  • c represents the preset phase rotation speed
  • h represents the specific phase value
  • RRU1 the first RRU above
  • a phase periodic traversal of the first test signal of RRU1 ie, phase rotation
  • the power of the first test signal is a low valley.
  • the phase of RRU2 is the phase periodic traversal of the second test signal of RRU2 (ie, the phase is rotated), and the phase is rotated to the constant phase inversion of carrier leakage,
  • the power of the second test signal is a low valley. That is, you can get the following formula
  • the phase difference between RRU1 and RRU2 can be obtained by the above two formulas:
  • phase difference between RRU1 and RRU2 can be expressed as the phase of the first test signal rotated to the phase rotated and the phase of the second test signal rotated to the phase rotated.
  • A0 At-c + 0 2l
  • the calculation formula used in step 203 can be obtained by the above verification.
  • the foregoing first test signal may be sent periodically, for example: the first RRU periodically sends the first test signal in multiple first time windows.
  • the second test signal may also be periodically sent.
  • the second RRU periodically sends the second test signal in multiple second time windows.
  • the phase of the first RRU may be jittered, that is, the phase of the first RRU may change at different times.
  • the phase of the first RRU is dithered by the first RRU crystal oscillator clock or hardware circuitry.
  • the phase of the second RRU also experiences jitter.
  • the phase jitter state between the first RRU and the second RRU may be obtained by measuring a phase difference between the first RRU and the second RRU at a plurality of different time points.
  • the method may further include:
  • the phase jitter state between the first RRU and the second RRU may specifically refer to a jitter state of a phase difference between the first RRU and the second RRU at different time points.
  • the jitter state can be used to better adjust the associated service sent by the first RRU and the second RRU (for example, the traffic transmitted in the CoMP transmission scenario) to synchronize the phases of the services sent by the first RRU and the second RRU.
  • the method may further include:
  • Second time window configuration information configured to configure a length and/or a location of the second time window, so that the second RRU configures the second time window according to the second time window configuration information.
  • the length and/or position of the second time window is described.
  • step 204 and step 205 can be performed in either step, or both step 204 and step 205.
  • the position of the first time window may specifically refer to a relative position between the first time window and the second time window, that is, a time interval between the first time window and the second time window, and the position of the second time window is specific. It may refer to the relative position of the second time window and the first time window. Since the phase difference between the calculation of the first RRU and the second RRU is calculated according to the time interval value described above, the calculation accuracy is higher when the time interval value is smaller in the calculation process, and in addition, when the first time window and The longer the length of the second time window is, the more the power value or the amplitude value of the first test signal may be collected in step 201, and the more the power value or the amplitude value of the second test signal collected in step 202 may be obtained.
  • step 204 and step 205 may be performed before step 201, and may be performed after step 203.
  • the execution time of step 204 and step 205 is not limited in this embodiment.
  • step 203 after performing step 203, the user needs to adjust the precision of the phase difference between the first RRU and the second RRU, and step 204 and/or step 205 may be used to increase the phase between the first RRU and the second RRU. Poor precision.
  • the length and position of the first time window may also be set by the first RRU, and the length and position of the second time window may also be set by the second RRU.
  • the method may further include:
  • step 206 and step 207 can be performed in either step, or both step 206 and step 207.
  • the rotation step of the first test signal may specifically refer to a phase in which the first test signal is rotated by position rotation in the first time window.
  • the rotation step of the first test signal may be equal to the specific phase value described above.
  • the rotation step of the second test signal may specifically refer to a phase rotated by the positional rotation of the second test signal in the second time window, wherein the rotation step of the second test signal may be equal to the first test signal.
  • the rotation step size For example, when the rotation step of the first test signal is shorter, and the power of the first test signal or the number of amplitude acquisition times is unchanged, then the phase interval of the first test signal collected is small, and thus the above-mentioned measurement is performed.
  • step 206 and step 207 may be performed before step 201, and may be performed after step 203.
  • the execution time of step 206 and step 207 is not limited in this embodiment.
  • step 203 after performing step 203, the user needs to adjust the precision of the phase difference between the first RRU and the second RRU, and step 206 and/or step 207 can be used to increase the phase between the first RRU and the second RRU. Poor precision.
  • the rotation step of the first test signal may also be set by the first RRU, and the rotation step of the second test signal may also be set by the second RRU.
  • FIG. 5 can be implemented in combination with the embodiment shown in FIG. 4.
  • various alternative embodiments are introduced in the above embodiments, and both can improve the phase difference accuracy of the measurement.
  • the following is a device embodiment of the present invention.
  • the device embodiment of the present invention is used to perform the method for implementing the first to second embodiments of the present invention.
  • FIG. 6 is a schematic structural diagram of a phase measuring apparatus according to an embodiment of the present invention. As shown in FIG.
  • the method includes: a first measuring unit 61, a second measuring unit 62, and a calculating unit 63, wherein: a measuring unit 61 , configured to receive, in a first time window, a first test signal sent by the first remote radio unit RRU, and measure power of the first test signal received in the first time window or a first receiving time value when the amplitude is the lowest; wherein the power or amplitude of the first test signal when the first RRU sends the first test signal is constant, and the phase of the first test signal is preset The phase rotation speed performs phase rotation.
  • the first test signal may be a time continuous test signal, for example, a time continuous test signal in the first time window; or the first test signal is a time-discrete test signal.
  • the first measurement unit 61 may be configured to collect power values or amplitude values of the plurality of first test signals in the first time window, and select the lowest power from the plurality of power values or amplitude values.
  • the value, or the lowest amplitude value is used to collect the lowest power value or the acquisition time of the amplitude value as the first receiving time.
  • the power or the amplitude of the first test signal when the first test signal is sent by the first RRU may be the power of the first test signal when the first test signal is acquired by the first RRU.
  • the amplitude is constant, for example: the power or amplitude of the first test signal generated by the first RRU is constant, or the power or amplitude of the first test signal sent by the first RRU to other devices (eg, other base stations) is constant. That is, the power or amplitude of the first test signal is constant before the first test signal is transmitted.
  • the power or amplitude of the first test signal is often affected by the first RRU characteristic or the transmission network during the transmission process.
  • the first RRU generates a carrier leakage when transmitting the first test signal, so that At the time of the carrier leakage, the power or amplitude of the first test signal may decrease, that is, the power or amplitude at which the first measurement unit 61 receives the first test signal at this time may be relatively low. Therefore, the power or amplitude of the first test signal received by the first measuring unit 61 can be changed. For example, when the phases of the first test signals are different, the power or amplitude of the first test signal can be different.
  • the phase of the first test signal is phase rotated at a preset phase rotation speed.
  • the phase of the first test signal is time-varying, for example, the preset phase rotation. The speed is 1 degree per us, and then the phase of the first test signal is rotated by 1 degree per lus.
  • the first RRU itself has a phase, that is, the first test signal may be phase-rotated with the phase of the first RRU as the starting phase, that is, the phase of the first test signal transmission time is first. The phase of the RRU.
  • a second measuring unit 62 configured to receive a second test signal sent by the second RRU in the second time window, and measure that the power or amplitude of the second test signal received in the second time window is the lowest a second receiving time value; wherein, the second test signal has a constant power or amplitude when the second RRU sends the second test signal, and a phase of the second test signal is at the preset phase The rotation speed is phase rotated.
  • the description of the second test signal and the power of the second test signal may be specifically described above with reference to the first test signal.
  • the second test signal may also be equivalent to the first test signal, for example: power or amplitude is equal, and phase rotation steps are equal.
  • the step of the phase rotation may specifically refer to an angle of the phase rotation of the test signal in the time window (for example: the phase rotation step of the first test signal may be the angle of the phase rotation of the first test signal in the first time window) ).
  • the power or amplitude of the second test signal may be different from the power or amplitude of the first test signal, or the step of the phase rotation of the second test signal is different from the step of the phase rotation of the first test signal. of.
  • the calculating unit 63 is configured to calculate a phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value, where the time difference is a difference between the first received time value and the second time received value, the time interval value representing a time interval between the first time window and the second time window.
  • the first time window and the second time window may be two time windows in which there is no time overlap, that is, the time interval exists between the first time window and the second time window.
  • the phase difference between the first RRU and the second RRU may specifically refer to a difference between a phase of the first RRU and a phase of the second RRU.
  • the foregoing first RRU may specifically represent one or more RRUs
  • the second RRU may specifically represent one or more RRUs, when the first RRU represents multiple RRUs, or the second RRU represents multiple RRUs.
  • the above method can calculate the phase difference between at least three RRUs.
  • the foregoing method may be specifically applied to any device that can receive signals sent by multiple RRUs, that is, the device can implement the foregoing method.
  • base station Joint Processing (JP) device
  • JP Joint Processing
  • the first test signal sent by the first RRU is received in the first time window, and the first power or the amplitude of the first test signal received in the first time window is measured to be the first Receiving a time value; receiving a second test signal sent by the second RRU in the second time window, and measuring a second receive when the power or amplitude of the second test signal received in the second time window is the lowest a time value; calculating a phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value. In this way, the test signal sent by the RRU can be directly measured to calculate the phase difference between the RRUs.
  • FIG. 7 is a schematic structural diagram of a phase measuring apparatus according to an embodiment of the present invention. As shown in FIG.
  • the method includes: a first measuring unit 71, a second measuring unit 72, and a calculating unit 73, wherein: a measuring unit 71 , configured to receive, in a first time window, a first test signal sent by the first remote radio unit RRU, and measure power of the first test signal received in the first time window or a first receiving time value when the amplitude is the lowest; wherein the power or amplitude of the first test signal when the first RRU sends the first test signal is constant, and the phase of the first test signal is preset The phase rotation speed performs phase rotation.
  • a second measuring unit 72 configured to receive a second test signal sent by the second RRU in the second time window, and measure that the power or amplitude of the second test signal received in the second time window is the lowest a second receiving time value; wherein, the second test signal has a constant power or amplitude when the second RRU sends the second test signal, and a phase of the second test signal is at the preset phase The rotation speed is phase rotated.
  • a calculating unit 73 configured to multiply the preset phase rotation speed and the time difference value to obtain a first phase value; and multiply the preset phase rotation speed and the time interval value to obtain a second a phase value, and adding the second phase value to the specific phase value to obtain a third phase value; and subtracting the phase value obtained by subtracting the third phase value from the first phase value as the first RRU a phase difference from the second RRU; wherein the time difference is a difference between the first reception time value and the second time reception value, the time interval value indicating the first The time interval between the time window and the second time window.
  • the specific phase value may specifically represent a phase in which the first test signal is rotated by the phase rotation in the first time window.
  • the phase of the first test signal rotated by the phase rotation in the first time window is 2 ⁇
  • the specific phase value is 2 ⁇
  • the phase of the first test signal rotated by the phase rotation in the first time window is 1 ⁇ .
  • phase rotated by the phase rotation of the second test signal in the second time window may be equivalent to the phase rotated by the phase rotation of the first test signal in the first time window, and may not be equivalent to the first The phase at which the test signal is rotated by the phase rotation in the first time window
  • the calculating unit 73 may specifically calculate a phase difference between the first RRU and the second RRU by using the following formula:
  • At represents the time difference value
  • c represents the preset phase rotation speed
  • h represents the specific phase value
  • the device may further include:
  • An acquiring unit (not shown in the drawing), configured to acquire a phase between the first RRU and the second RRU according to a phase difference between the first RRU and the second RRU at a plurality of different time points Jitter state.
  • the phase jitter state between the first RRU and the second RRU may specifically refer to a jitter state of a phase difference between the first RRU and the second RRU at different points.
  • the jitter state can be used to better adjust the associated service sent by the first RRU and the second RRU (for example, the traffic transmitted in the CoMP transmission scenario) to synchronize the phases of the services sent by the first RRU and the second RRU.
  • the device may further include:
  • a first configuration unit 74 configured to send, to the first RRU, first time window configuration information for configuring a length and/or a location of the first time window, so that the first RRU is according to the first Time window configuration information configuring a length and/or location of the first time window;
  • a second configuration unit 75 configured to send, to the second RRU, the second time window for configuring Second time window configuration information of length and/or position such that the second RRU configures the length and/or position of the second time window in accordance with the second time window configuration information.
  • the position of the first time window and/or the second time window can be configured, that is, the time interval between the first time window and the second time window can be configured to improve the phase difference between the first RRU and the second RRU. Precision.
  • the method may further include:
  • a third configuration unit 76 configured to send, to the first RRU, first rotation step size configuration information for configuring a rotation step of the phase rotation of the first test signal, so that the first RRU is according to the The first rotation step configuration information configures a rotation step of the first test signal;
  • a fourth configuration unit 77 configured to send second rotation step configuration information for configuring a rotation step of the phase rotation of the second test signal to the second RRU, so that the second RRU is according to the
  • the second rotation step size configuration information configures a rotation step size of the second test signal.
  • FIG. 9 is a schematic structural diagram of another phase measuring apparatus according to an embodiment of the present invention.
  • the method includes: a receiver 91 and a memory 92, and the receiver 91 and the memory 92, respectively.
  • the connected processor 93 is configured to store a set of program codes, and the processor 93 is configured to invoke the program code to perform the following operations:
  • the operation performed by the processor 93 to calculate a phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value may include: Multiplying the preset phase rotation speed by the time difference to obtain a first phase value; multiplying the preset phase rotation speed by the time interval value to obtain a second phase value, and the second phase Adding a phase value to a specific phase value to obtain a third phase value;
  • phase difference obtained by subtracting the third phase value from the first phase value is used as a phase difference between the first RRU and the second RRU.
  • the operation performed by the processor 93 to calculate the phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value may include:
  • the phase difference between the first RRU and the second RRU is calculated by the following formula:
  • At represents the time difference value
  • c represents the preset phase rotation speed
  • h represents the specific phase value
  • the processor 93 further Can be used to do the following:
  • the phase jitter state between the first RRU and the second RRU may specifically refer to a jitter state of a phase difference between the first RRU and the second RRU at different time points.
  • the jitter state can be used to better adjust the associated service sent by the first RRU and the second RRU (for example: in CoMP transmission)
  • the traffic transmitted in the scenario is transmitted to synchronize the phases of the services sent by the first RRU and the second RRU.
  • the apparatus further includes a transmitter 94, where the processor 93 is further configured to perform the following operations:
  • first time window configuration information for configuring a length and/or a location of the first time window to the first RRU, such that the first RRU is according to the first time window
  • the configuration information configures the length and/or location of the first time window
  • the configuration information configures the length and/or location of the second time window.
  • the device further includes a transmitter 94, and the processor 93 is further configured to perform the following operations:
  • the first test signal sent by the first RRU is received in the first time window, and the first power or the amplitude of the first test signal received in the first time window is measured to be the first Receiving a time value; receiving a second test signal sent by the second RRU in the second time window, and measuring a second receive when the power or amplitude of the second test signal received in the second time window is the lowest a time value; calculating a phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value. In this way, the test signal sent by the RRU can be directly measured to calculate the phase difference between the RRUs.
  • FIG. 11 is a schematic structural diagram of a phase measurement system according to an embodiment of the present invention.
  • the method includes: a first RRU 111, a second RRU 112, and a measuring device 113, where: a first RRU 111, configured to send a first test signal to the measuring device 113 in a first time window, where the first test signal has a constant power or amplitude when the first RRU sends the first test signal And the phase of the first test signal is phase rotated at a preset phase rotation speed;
  • a measuring device 113 configured to measure a first receiving time value when the power or amplitude of the first test signal received in the first time window is the lowest;
  • a second RRU 112 configured to send a second test signal to the measuring device in a second time window, where the power or amplitude of the second test signal when the second RRU sends the second test signal is constant, And the phase of the second test signal is phase rotated at the preset phase rotation speed;
  • the measuring device 113 is further configured to measure a second receiving time value when the power or amplitude of the second test signal received in the second time window is the lowest;
  • the measuring device 113 is further configured to calculate a phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value; wherein the time difference is a difference between the first received time value and the second time received value, the time interval value representing a time interval between the first time window and the second time window.
  • the measuring device 113 may be a phase measuring device according to any one of the embodiments shown in FIG. 6-10.
  • the measuring device receives the first test signal sent by the first RRU in the first time window, and measures the power or amplitude of the first test signal received in the first time window. a first receiving time value; the measuring device receives the second test signal sent by the second RRU in the second time window, and measures the power or amplitude of the second test signal received in the second time window to be the lowest a second receiving time value; the measuring device calculates a phase difference between the first RRU and the second RRU according to the preset phase rotation speed, the time difference value, and the time interval value. In this way, the test signal sent by the RRU can be directly measured to calculate the phase difference between the RRUs. Compared with the prior art, the phase difference is fed back by using the air interface resources by the user equipment, and the embodiment of the present invention can improve the accuracy of the measured phase difference to meet the requirements. Performance requirements for collaborative communications.
  • the machine can be read into a storage medium, and when executed, the program can include the flow of an embodiment of the methods as described above.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (Random Access Memory).

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

Abstract

Un mode de réalisation de la présente invention concerne un procédé de mesure de phase, consistant à: dans une première fenêtre temporelle, recevoir un premier signal de test envoyé par une première RRU, et mesurer une première valeur d'instant de réception à l'instant de plus faible puissance ou amplitude du premier signal de test reçu dans la première fenêtre temporelle; dans une seconde fenêtre temporelle, recevoir un second signal de test envoyé par une seconde RRU, et mesurer une seconde valeur d'instant de réception à l'instant de plus faible puissance ou amplitude du second signal de test reçu dans la seconde fenêtre temporelle; et sur la base d'une vitesse de rotation de phase prédéterminée, d'une différence de temps et d'une valeur d'intervalle de temps, calculer la différence de phase de la première RRU et de la seconde RRU. D'une manière correspondante, le mode de réalisation de la présente invention concerne également un appareil et un système associés. La présente invention peut améliorer la précision de mesure de différence de phase, satisfaisant les exigences de performances d'une communication collaborative.
PCT/CN2013/086293 2013-10-31 2013-10-31 Procédé, appareil et système de mesure de phase Ceased WO2015062012A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118234002A (zh) * 2024-03-04 2024-06-21 智慧尘埃(上海)通信科技有限公司 一种多基站设备间相位同步系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116073963B (zh) * 2021-08-27 2024-07-09 上海推络通信科技合伙企业(有限合伙) 一种被用于无线通信的节点中的方法和装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101257343A (zh) * 2008-01-29 2008-09-03 北京北方烽火科技有限公司 一种用于天线校准射频远端单元端的数据同步方法
US20110158114A1 (en) * 2009-12-28 2011-06-30 Motorola, Inc. Method and appartus for performing timing synchronization in a wireless communication system
CN102185687A (zh) * 2011-05-18 2011-09-14 中兴通讯股份有限公司 一种实现不同单元间时钟同步的系统和方法
CN103378886A (zh) * 2012-04-13 2013-10-30 中国移动通信集团公司 一种rru天线校准方法、装置及系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5955992A (en) * 1998-02-12 1999-09-21 Shattil; Steve J. Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter
JP4215887B2 (ja) * 1999-02-18 2009-01-28 三菱電機株式会社 基地局アンテナ装置
JP3562420B2 (ja) * 2000-02-10 2004-09-08 日本電気株式会社 適応アンテナ装置
CN101558575B (zh) * 2006-09-14 2013-06-26 高通股份有限公司 无线通信系统中的功率分配
US7990314B2 (en) * 2008-06-30 2011-08-02 Liao Henry H Method and system for locating a geographical position using broadcast frequency modulation signals
CN103308895A (zh) * 2013-06-19 2013-09-18 北京理工大学 一种基于重叠频谱的低阶相位误差估计的方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101257343A (zh) * 2008-01-29 2008-09-03 北京北方烽火科技有限公司 一种用于天线校准射频远端单元端的数据同步方法
US20110158114A1 (en) * 2009-12-28 2011-06-30 Motorola, Inc. Method and appartus for performing timing synchronization in a wireless communication system
CN102185687A (zh) * 2011-05-18 2011-09-14 中兴通讯股份有限公司 一种实现不同单元间时钟同步的系统和方法
CN103378886A (zh) * 2012-04-13 2013-10-30 中国移动通信集团公司 一种rru天线校准方法、装置及系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118234002A (zh) * 2024-03-04 2024-06-21 智慧尘埃(上海)通信科技有限公司 一种多基站设备间相位同步系统

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