WO2014127506A1 - Procédé et dispositif servant à une synchronisation de transmission d'un signal de liaison montante - Google Patents

Procédé et dispositif servant à une synchronisation de transmission d'un signal de liaison montante Download PDF

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Publication number
WO2014127506A1
WO2014127506A1 PCT/CN2013/071674 CN2013071674W WO2014127506A1 WO 2014127506 A1 WO2014127506 A1 WO 2014127506A1 CN 2013071674 W CN2013071674 W CN 2013071674W WO 2014127506 A1 WO2014127506 A1 WO 2014127506A1
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WO
WIPO (PCT)
Prior art keywords
base station
uplink signal
adjustment parameter
timing advance
value
Prior art date
Application number
PCT/CN2013/071674
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English (en)
Chinese (zh)
Inventor
闫志宇
马莎
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/071674 priority Critical patent/WO2014127506A1/fr
Priority to CN201380001704.4A priority patent/CN105409272B/zh
Publication of WO2014127506A1 publication Critical patent/WO2014127506A1/fr

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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 technologies, and in particular, to a method and apparatus for uplink signal transmission timing. Background technique
  • a transceiver node receives uplink signals sent by multiple UEs.
  • an uplink signal sent by all UEs is required to reach the transceiver node at the same time.
  • the UE needs to adjust the transmission timing of the uplink signal to ensure that the uplink signal of the UE arrives at the receiving node at a desired time.
  • the time of the uplink signal transmission may be determined in the following manner, that is, the UE may be allocated a TA value for transmitting an uplink signal to the macro cell and a TA value for transmitting the uplink signal to the micro cell.
  • the time of the uplink signal transmission is determined in the above manner, since the uplink signal sent to the macro base station is earlier than the uplink signal sent to the micro base station, it is started when the UE sends the signal to the micro base station not completed in some time periods. Sending a signal to the macro base station, that is, the signals of the macro base station and the micro base station are overlapped. Because the UE transmit power is limited or the two signals interfere with each other, one of the uplink signals needs to be discarded, and the uplink signal of the discarded party cannot be discarded. Correct demodulation or demodulation performance is poor. Summary of the invention
  • Embodiments of the present invention provide a method and apparatus for uplink signal transmission timing, which can improve the demodulation performance of an uplink signal.
  • the present invention provides a method for uplink signal transmission timing, including: When the uplink signal is sent to the base station, the transmission timing of the uplink signal is adjusted according to the timing advance adjustment parameter;
  • the uplink signal is transmitted according to the adjusted transmission timing.
  • the method before the obtaining the adjusted timing advance adjustment parameter, the method further includes:
  • adjusting the transmission timing of the uplink signal according to the timing advance adjustment parameter includes:
  • the transmission timing of the uplink signal is adjusted according to the TA value and the timing advance adjustment parameter.
  • the timing advance TA value configured by the receiving base station and configured by the UE includes:
  • the base station is the macro base station or the micro base station.
  • the acquiring the timing advance adjustment parameter includes:
  • timing advance adjustment parameter is a fixed value, determining the timing advance adjustment parameter according to a communication protocol;
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter sent by the micro base station by using dedicated signaling is received, where the timing advance adjustment parameter is sent according to the UE to the The time difference used by the macro base station and the micro base station is determined.
  • the transmission timing of the uplink signal is adjusted according to the TA value and the timing advance adjustment parameter, including:
  • the first TA value is used to adjust the transmission timing of the uplink signal
  • the transmission timing of the uplink signal is adjusted by using the sum of the second TA value and the timing advance adjustment parameter.
  • the first TA value is a sum of the second TA value and the timing advance adjustment parameter.
  • adjusting the uplink signal according to the TA value and the timing advance adjustment parameter Transmission timing including:
  • the transmission timing of the uplink signal is adjusted by using the sum of the second TA value and the timing advance adjustment parameter.
  • the Kth uplink wireless subframe is advanced with the corresponding downlink wireless subframe.
  • the present invention provides a method for uplink signal transmission timing, including:
  • the acquiring timing advance adjustment parameter includes:
  • timing advance adjustment parameter is a fixed value, determining the timing advance adjustment parameter according to a communication protocol;
  • timing advance adjustment parameter is a fixed value, determining, according to the micro base station serving the UE, the timing advance adjustment parameter;
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter is determined according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station.
  • the method further includes:
  • the timing advance adjustment parameter is broadcasted to all UEs under the micro base station serving the UE; or, when the timing The advance adjustment parameter is configured to send the timing advance adjustment parameter to the UE by using dedicated signaling when determining, according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station;
  • the second receiving uplink signal window And receiving, by the second receiving uplink signal window, an uplink signal that is sent by the UE by using the adjusted transmission timing, where the adjusted transmission timing is that the UE adjusts the parameter according to the second TA value and the timing advance amount. And adjusting a transmission timing determined by the transmission timing of the uplink signal, where the second TA value is a value configured by the micro base station for the UE, and is sent by the macro base station or the micro base station to the UE.
  • the sum of the second TA value and the timing advance adjustment parameter is a first TA value
  • the first TA The value is a value configured by the macro base station for the UE, and is sent by the macro base station or the micro base station to the UE.
  • the adjusting the first received uplink signal according to the timing advance adjustment parameter includes: The time value advanced on the basis of the first received uplink signal window is a first adjustment parameter; wherein, when the timing advance adjustment parameter is a fixed value, the first adjustment parameter is greater than or equal to the timing If the timing advance adjustment parameter is a change value, the first adjustment parameter is greater than or equal to a first time difference, where the first time difference is that the N UEs send an uplink signal to the macro base station.
  • the maximum time difference between the time differences used by the micro base station, and N is the number of UEs that respectively transmit uplink signals to the macro base station and the micro base station.
  • the present invention provides an apparatus for uplink signal transmission timing, including:
  • An obtaining unit configured to acquire a timing advance adjustment parameter
  • an adjusting unit configured to: when the uplink signal is sent to the base station, adjust a transmission timing of the uplink signal according to the timing advance adjustment parameter acquired by the acquiring unit;
  • the device further includes: a receiving unit, configured to receive a TA value that is sent by the base station and configured by the user equipment UE;
  • the adjusting unit is configured to: when transmitting the uplink signal to the base station, adjust a transmission timing of the uplink signal according to the TA value and the timing advance adjustment parameter acquired by the acquiring unit.
  • the receiving unit includes:
  • a first receiving module configured to receive a first TA value that is sent by the base station and configured for the UE, and use the first TA value to adjust a transmission timing of the uplink signal when the uplink signal is sent to the macro base station; and/or ,
  • a second receiving module configured to receive a second TA value that is sent by the base station and configured for the UE, and use the second TA value to adjust a transmission timing of the uplink signal when the uplink signal is sent to the micro base station; Is the macro base station or the micro base station.
  • the obtaining unit is configured to:
  • timing advance adjustment parameter When the timing advance adjustment parameter is a fixed value, determining the timing advance adjustment parameter according to a communication protocol; or Receiving, by the micro base station, the timing advance adjustment parameter sent by the broadcast when the timing advance adjustment parameter is a fixed value; or
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter sent by the micro base station by using dedicated signaling is received, where the timing advance adjustment parameter is sent according to the UE to the The time difference used by the macro base station and the micro base station is determined.
  • the adjusting unit in combination with the third possible embodiment of the third aspect, includes:
  • a first adjustment module configured to: when the uplink signal is sent to the macro base station, adjust a transmission timing of the uplink signal by using the first TA value;
  • a second adjusting module configured to adjust a transmission timing of the uplink signal by using a sum of the second TA value and the timing advance adjustment parameter when transmitting an uplink signal to the micro base station.
  • the first TA value is a sum of the second TA value and the timing advance adjustment parameter.
  • the adjusting unit is configured to:
  • the transmission timing of the uplink signal is adjusted by using the sum of the second TA value and the timing advance adjustment parameter.
  • the sending unit is configured to:
  • the Kth uplink wireless subframe is advanced with the corresponding downlink wireless subframe.
  • N TA + x N TA iM + N TA ffset x T s seconds to transmit; wherein, the Nta represents the threshold value configured by the base station for the UE; and the N TAfli ⁇ mOTi indicates the adjustment Timing advance adjustment parameter; the N TA .
  • Ffset represents a timing advance offset; when the value is 0, it indicates that the Kth uplink radio subframe corresponds to the macro base station, and when the value is 1, it indicates that the Kth uplink radio subframe corresponds to the foregoing Micro base station; the T s is a coefficient.
  • the present invention provides an apparatus for uplink signal transmission timing, including:
  • the processor is configured to: control the execution of the program routine, and include: acquiring a timing advance adjustment parameter; and transmitting an uplink signal to the base station, and adjusting a transmission timing of the uplink signal according to the obtained timing advance adjustment parameter;
  • the device further includes:
  • a receiver configured to receive a TA value that is sent by the base station to the UE of the user equipment
  • the processor is used to:
  • the transmission timing of the uplink signal is adjusted according to the TA value and the obtained timing advance adjustment parameter.
  • the receiver in combination with the first possible embodiment of the fourth aspect, is configured to:
  • the base station is the macro base station or the micro base station.
  • the processor is configured to:
  • timing advance adjustment parameter is a fixed value, determining the timing advance adjustment parameter according to a communication protocol;
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter sent by the micro base station by using dedicated signaling is received, where the timing advance adjustment parameter is sent according to the UE to the The time difference used by the macro base station and the micro base station is determined.
  • the processor is configured to: When the uplink signal is sent to the macro base station, the transmission timing of the uplink signal is adjusted by using the first TA value;
  • the transmission timing of the uplink signal is adjusted by using the sum of the second TA value and the timing advance adjustment parameter.
  • the first TA value is a sum of the second TA value and the timing advance adjustment parameter.
  • the processor is configured to:
  • the transmission timing of the uplink signal is adjusted by using the sum of the second TA value and the timing advance adjustment parameter.
  • the transmitter is configured to:
  • the Kth uplink wireless subframe is advanced with the corresponding downlink wireless subframe.
  • N TA + x N TA iM + N TA ffset x T s seconds to transmit; wherein, the Nta represents the threshold value configured by the base station for the UE; and the N TAfli ⁇ mOTi indicates the adjustment Timing advance adjustment parameter; the N TA .
  • Ffset represents a timing advance offset; when the value is 0, it indicates that the Kth uplink radio subframe corresponds to the macro base station, and when the value is 1, it indicates that the Kth uplink radio subframe corresponds to the foregoing Micro base station; the T s is a coefficient.
  • the present invention provides an apparatus for uplink signal transmission timing, including:
  • An obtaining unit configured to acquire a timing advance adjustment parameter
  • an adjusting unit configured to adjust a first received uplink signal window according to the timing advance adjustment parameter acquired by the acquiring unit, to obtain a second received uplink signal window, where the first received uplink signal window is a preset macro base station and a window in which the micro base station synchronously receives the uplink signal;
  • a receiving unit configured to receive, by using the adjusting unit, the second received uplink signal window, and receive an uplink signal sent by the UE.
  • the acquiring unit is configured to: when the timing advance adjustment parameter is a fixed value, determine the timing according to a communication protocol. Pre-adjustment parameters; or,
  • timing advance adjustment parameter is a fixed value, determining, according to the micro base station serving the UE, the timing advance adjustment parameter;
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter is determined according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station.
  • the device further includes:
  • a first sending unit configured to: when the timing advance adjustment parameter is determined according to the micro base station serving the UE, send the timing advance adjustment parameter to all UEs under the micro base station serving the UE by using a broadcast Or,
  • a second sending unit configured to: when the timing advance adjustment parameter is determined according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station, use the timing advance adjustment parameter to pass a dedicated message Sending to the UE;
  • the receiving unit is used to:
  • the second receiving uplink signal window And receiving, by the second receiving uplink signal window, an uplink signal that is sent by the UE by using the adjusted transmission timing, where the adjusted transmission timing is that the UE adjusts the parameter according to the second TA value and the timing advance amount. And adjusting a transmission timing determined by the transmission timing of the uplink signal, where the second TA value is a value configured by the micro base station for the UE, and is sent by the macro base station or the micro base station to the UE.
  • the sum of the second TA value and the timing advance adjustment parameter is a first TA value
  • the first TA The value is a value configured by the macro base station for the UE, and is sent by the macro base station or the micro base station to the UE.
  • the adjustment unit in combination with the second possible embodiment of the fifth aspect or the third possible embodiment of the fifth aspect, is configured to:
  • the time value advanced on the basis of the first received uplink signal window is a first adjustment parameter; wherein, when the timing advance adjustment parameter is a fixed value, the first adjustment parameter is greater than or equal to the timing Adjusting the parameter in advance; or, the timing advance adjustment parameter is a change
  • the value of the first adjustment parameter is greater than or equal to the first time difference, where the first time difference is the maximum time difference between the time difference used by the N UEs to send the uplink signal to the macro base station and the micro base station, where N is respectively The number of UEs transmitting uplink signals to the macro base station and the micro base station.
  • the present invention provides an apparatus for uplink signal transmission timing, including:
  • a memory for storing information including a program routine
  • the processor configured to control the execution of the program routine, includes: acquiring a timing advance adjustment parameter; and adjusting the first received uplink signal window according to the obtained timing advance adjustment parameter to obtain a second received uplink signal window,
  • the first receiving uplink signal window is a window in which a preset macro base station and a micro base station synchronously receive an uplink signal;
  • the processor is configured to:
  • timing advance adjustment parameter is a fixed value, determining the timing advance adjustment parameter according to a communication protocol;
  • timing advance adjustment parameter is a fixed value, determining, according to the micro base station serving the UE, the timing advance adjustment parameter;
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter is determined according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station.
  • the device further includes:
  • a transmitter configured to: when the timing advance adjustment parameter is determined according to the micro base station serving the UE, send the timing advance adjustment parameter to all UEs under the micro base station serving the UE by using a broadcast; or ,
  • the transmitter is configured to: when the timing advance adjustment parameter is determined according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station, use the timing advance adjustment parameter to pass a dedicated message. Sending to the UE;
  • the receiver is used to: Receiving, by the second receiving uplink signal window, an uplink signal sent by the UE by using the adjusted transmission timing, where the adjusted transmission timing is adjusted by the UE according to the second TA value and the timing advance adjustment parameter a transmission timing determined by the transmission timing of the uplink signal, where the second TA value is a value configured by the micro base station for the UE, and is sent by the macro base station or the micro base station to the UE.
  • the sum of the second TA value and the timing advance adjustment parameter is a first TA value
  • the first TA The value is a value configured by the macro base station for the UE, and is sent by the macro base station or the micro base station to the UE.
  • the processor is configured to:
  • the time value advanced on the basis of the first received uplink signal window is a first adjustment parameter; wherein, when the timing advance adjustment parameter is a fixed value, the first adjustment parameter is greater than or equal to the timing If the timing advance adjustment parameter is a change value, the first adjustment parameter is greater than or equal to a first time difference, where the first time difference is that the N UEs send an uplink signal to the macro base station.
  • the maximum time difference between the time differences used by the micro base station, and N is the number of UEs that respectively transmit uplink signals to the macro base station and the micro base station.
  • An embodiment of the present invention provides a method and a device for adjusting an uplink signal transmission timing, by acquiring an adjustment timing advance amount adjustment parameter; and when transmitting an uplink signal to a base station, adjusting a transmission timing of the uplink signal according to the timing advance amount adjustment parameter; The uplink signal is transmitted at the adjusted transmission timing.
  • the solution provided by the embodiment of the present invention adjusts the transmission timing of the uplink signal by adjusting the timing advance adjustment parameter, so that the demodulation performance of the uplink signal can be improved.
  • FIG. 1 is a flowchart of a method (UE side) of uplink signal transmission timing according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for uplink signal transmission timing (micro base station side) according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart of another method for transmitting uplink signal according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic diagram of deploying a micro base station in a coverage of a macro base station according to Embodiment 1 of the present invention
  • the UE-0 provided in the first embodiment uses the timing relationship between the present invention and the original scheme.
  • FIG. 6 is a block diagram of an apparatus (UE side) for uplink signal transmission timing according to Embodiment 2 of the present invention;
  • FIG. 7 is a block diagram of another apparatus (UE side) for uplink signal transmission timing according to Embodiment 2 of the present invention.
  • FIG. 8 is a block diagram of another apparatus (UE side) for uplink signal transmission timing according to Embodiment 2 of the present invention.
  • FIG. 9 is a block diagram of an apparatus (micro base station side) for uplink signal transmission timing according to Embodiment 2 of the present invention.
  • FIG. 10 is a block diagram of another apparatus (micro base station side) for providing uplink signal transmission timing according to Embodiment 2 of the present invention.
  • FIG. 11 is a block diagram of another apparatus (micro base station side) for uplink signal transmission timing according to Embodiment 2 of the present invention. detailed description
  • the embodiment of the invention provides a method for uplink signal transmission timing, and the execution body of the method is
  • the method includes:
  • Step 1 01 obtaining an adjustment timing advance adjustment parameter
  • the method before the step, further includes: receiving, by the base station, a Timing Advance (TA) value configured for the user equipment UE. Specifically, receiving, by the base station, a first TA value configured for the UE, and transmitting the uplink signal to the macro base station, adjusting, by using the first TA value, a transmission timing of the uplink signal; and/or receiving the And transmitting, by the base station, a second TA value configured for the UE, when transmitting the uplink signal to the micro base station, adjusting, by using the second TA value, a transmission timing of the uplink signal; where the base station is the macro base station or the micro base station .
  • TA Timing Advance
  • the first TA value configured for the UE sent by the base station is received; or the second TA value configured for the UE sent by the base station is received only; or the first TA value configured for the UE sent by the base station is received, and the base station is also received.
  • the second TA value configured for the UE is sent.
  • the first TA value may be configured by the macro base station for the UE and sent to the UE, or may be configured by the macro base station for the UE, and sent to the micro base station by using an air interface between the macro base station and the micro base station, and then The base station sends to the UE.
  • the second TA value may be configured by the base station for the UE and sent to the UE, or may be configured by the micro base station for the UE, sent to the macro base station by using an air interface between the macro base station and the micro base station, and then sent by the macro base station to the UE. .
  • the TA indicates the advance amount of the uplink signal transmitted by the UE.
  • the distance that the uplink signal is transmitted between the UE and the transceiver node is D, and the transceiver node wants to receive the uplink signal sent by the UE at the time of the TO.
  • the UE needs to send an uplink signal at (T0-T TA ) time.
  • the TA is determined according to the time when the UE sends the uplink signal to the base station, and the value of TA is D/c, and c represents the speed of electromagnetic wave transmission. Since the UE has mobility, the distance D of the uplink signal transmitted between the UE and the transceiver node also changes. Therefore, it is necessary to continuously adjust the value of the TA to ensure that the UE sends the uplink signal to the transceiver node and the desired time of the transceiver node. The error is within the acceptable range.
  • the timing advance adjustment parameter can be expressed by N TAadjustm ent , where N TAadjustment indicates The amount of advancement when the uplink information is transmitted on the basis of the timing advance TA.
  • N TAadjustment indicates The amount of advancement when the uplink information is transmitted on the basis of the timing advance TA.
  • the timing advance adjustment parameter can also be expressed in other manners, and the present invention does not limit the representation manner of the timing advance adjustment parameter.
  • Step 102 When transmitting an uplink signal to a base station, adjusting a transmission timing of the uplink signal according to the timing advance adjustment parameter;
  • the transmission timing of the uplink signal is adjusted according to the received TA value and the timing advance adjustment parameter.
  • the first TA value is used to adjust the transmission timing of the uplink signal; when the uplink signal is sent to the micro base station, And adjusting a transmission timing of the uplink signal by using a sum of the second TA value and the timing advance adjustment parameter.
  • the UE when the UE is located away from the macro base station and is closer to the micro base station, only the micro base station provides services to the micro base station. Therefore, when only the uplink signal is sent to the micro base station, the second TA value and the timing advance amount are adjusted. The sum of the parameters adjusts the transmission timing of the uplink signal.
  • the uplink signal is transmitted to the macro base station and the micro base station, respectively, it is also possible to adjust only by using the TA value.
  • the first TA value is used to adjust the transmission timing of the uplink signal; when the uplink signal is sent to the micro base station, the uplink signal is adjusted by using the first TA value. Transmission timing. At this time, it can be understood that the first TA value is the sum of the second TA value and the timing advance adjustment parameter.
  • Step 103 Send the uplink signal according to the adjusted transmission timing.
  • ⁇ ⁇ Determining the threshold value configured by the base station for the UE; the N TAai ⁇ _ indicating the adjusted timing advance amount adjustment parameter; the N TA .
  • Ffset represents a timing advance offset; when the value is 0, it indicates that the Kth uplink radio subframe corresponds to the macro base station, and when the value is 1, it indicates that the Kth uplink radio subframe corresponds to the foregoing Micro base station; the T s is a coefficient.
  • the time when the micro base station receives the uplink signal is the first adjustment parameter, where the first adjustment parameter can be represented by N RX ad j UStm ent , so that the uplink signal of the UE can be simultaneously satisfied.
  • the following conditions When the uplink signal of the UE is switched between the macro base station and the micro base station, the corresponding macro base station and the micro base station correctly demodulate the uplink signal sent by the received UE; part of the uplink signal of the UE needs to be simultaneously used by the macro base station and the micro base station. Receive; the signals sent by the UE to the two base stations are not overlapped as much as possible.
  • An embodiment of the present invention provides a method for adjusting an uplink signal transmission timing, by adjusting an adjustment timing advance amount adjustment parameter, adjusting a transmission timing of the uplink signal according to a timing advance adjustment parameter, and transmitting an uplink signal by using the adjusted transmission timing, so that The demodulation performance of the uplink signal can be improved.
  • An embodiment of the present invention provides a method for uplink signal transmission timing.
  • the method may be a base station. As shown in FIG. 2, the method includes:
  • Step 201 Acquire a timing advance adjustment parameter.
  • the micro base station configures the second TA value for the UE according to the received signal sent by the UE.
  • the second TA value is a value configured by the macro base station or the micro base station to be configured by the UE. That is, the second TA may be configured for the micro base station and sent by the micro base station to the UE, or the second TA may be configured for the micro base station, and sent by the wired or wireless Backhau l (backhaul) between the macro base station and the micro base station.
  • the macro base station is sent to the UE by the macro base station.
  • TA indicates the advance amount of the uplink signal transmitted by the UE. For example, if the uplink signal is transmitted between the UE and the transceiver node by a distance D, and the transceiver node wants to receive the uplink signal sent by the UE at the time of TO, the UE needs to send the uplink signal at (T0-T TA ) time.
  • the TA is determined according to the time when the UE sends the uplink signal to the base station, and the value of TA is D/c, and c represents the speed of electromagnetic wave transmission. Since the UE has mobility, the distance D of the uplink signal transmitted between the UE and the transceiver node also changes. Therefore, it is necessary to continuously adjust the value of the TA to ensure that the UE sends the uplink signal to the transceiver node and the desired time of the transceiver node. The error is within the acceptable range.
  • the timing advance adjustment parameter may be represented by N TAadjustment , where N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • the timing advance adjustment parameter can also be expressed in other manners, and the present invention does not limit the timing advance adjustment parameter. Representation.
  • the micro base station may also send the timing advance adjustment parameter to all UEs under the micro base station serving the UE by using a broadcast manner; or, the micro base station may also use dedicated signaling.
  • the i ca t ed signaling is sent to the UE.
  • Step 202 Adjust a first received uplink signal window according to the timing advance adjustment parameter, and obtain a second received uplink signal window, where the first received uplink signal window is a window for the preset macro base station and the micro base station to synchronously receive the uplink signal;
  • adjusting the first received uplink signal window according to the timing advance adjustment parameter includes: a time value advanced on a basis of the first received uplink signal window is a first adjustment parameter; wherein, when the timing advance When the adjustment parameter is a fixed value, the first adjustment parameter is greater than or equal to the timing advance adjustment parameter, that is, the N RX adju s ent > the N TA ad JU s, m en,; or, the timing When the advancement adjustment parameter is a change value, the first adjustment parameter is greater than or equal to the first time difference, that is, the N RX ⁇ ⁇ ⁇ 1 ⁇ ( ⁇ : ⁇ — ⁇ 1 ⁇ 1 , 2 , 3 , ...
  • the first time difference is the maximum time difference between the time difference used by the UE to send the uplink signal to the macro base station and the micro base station, where is the number of UEs that respectively send uplink signals to the macro base station and the micro base station.
  • Step 203 Receive, by using the second receiving uplink signal window, an uplink signal sent by the UE.
  • An embodiment of the present invention provides a method for adjusting an uplink signal transmission timing, and adjusting a first received uplink signal window according to the obtained timing advance adjustment parameter to obtain a second received uplink signal window, where the first received uplink signal window is preset
  • the macro base station and the micro base station synchronously receive the window of the uplink signal, and receive the uplink signal sent by the UE through the second receiving uplink signal window, so that the received uplink signal can be correctly demodulated, and the demodulation of the uplink signal is improved. performance.
  • the embodiment of the invention provides a method for uplink signal transmission timing. As shown in FIG. 3, the method includes:
  • Step 301 The macro base station or the base station sends a first threshold configured for the UE to the UE.
  • the macro base station may configure, according to the received signal sent by the UE, a first threshold value of the advance timing quantity for the UE, and the macro base station sends the configured first threshold value to the UE, or the macro base station is the UE.
  • the first TA value is configured to be sent to the micro base station by using a wired or wireless Backhaul (backhaul) between the macro base station and the micro base station, and the first TA value is sent by the micro base station to the UE.
  • backhaul Backhaul
  • TA indicates the advance amount of the uplink signal transmitted by the UE. For example, if the uplink signal is transmitted between the UE and the transceiver node by a distance D, and the transceiver node wants to receive the uplink signal sent by the UE at the time of TO, the UE needs to send the uplink signal at (T0-T TA ) time.
  • the TA is determined according to the time when the UE sends the uplink signal to the base station, and the value of TA is D/c, and c represents the speed of electromagnetic wave transmission. Since the UE has mobility, the distance D of the uplink signal transmitted between the UE and the transceiver node also changes. Therefore, it is necessary to continuously adjust the value of the TA to ensure that the UE sends the uplink signal to the transceiver node and the desired time of the transceiver node. The error is within the acceptable range.
  • Step 302 The base station or the macro base station sends a second TA value configured for the UE to the UE.
  • the micro base station may configure, according to the signal sent by the UE, a second TA value of the advanced timing, and the second base value of the configured second TA value is sent by the micro base station to the UE, or the micro base station configures the second The second TA value is sent to the macro base station by wired or wireless Backhaul (backhaul) between the macro base station and the micro base station, and the macro base station transmits the first TA value to the UE.
  • backhaul Backhaul
  • step 301 and step 302 are not fixed.
  • step 301 may be performed first, or step 302 may be performed first, or step 301 and step 302 may be performed simultaneously.
  • Step 303 The UE receives the first TA value and/or the second TA value configured by the macro base station and the micro base station to be configured by the UE.
  • Step 304 The micro base station acquires a timing advance adjustment parameter.
  • the timing advance adjustment parameter may be represented by N TAadjustment , where N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • the timing advance adjustment parameter can also be expressed in other manners, and the present invention does not limit the representation manner of the timing advance adjustment parameter.
  • the timing advance adjustment parameter is described by N TAadjustment .
  • N TAad j UStment When N TAad j UStment described for the UE, N TAad j UStment may be a fixed value, the fixed value indicates the micro base station to each UE within the range of services available N TAad j UStm "t are the same;
  • the N TAadjustment may also be a change value indicating that the N TAadjustment obtained by each UE in the service range of the micro base station is different, that is, different N TAadjustments are sent for different UEs .
  • the first mode when the N TAad j UStment is a fixed value, the N TAadjustment is determined according to the communication protocol; it should be noted that the N TAad j UStment determined in this manner does not need to notify the UE, and the UE also N TAad j UStment can be obtained according to the same communication protocol.
  • the second mode when the N TAad j UStment is a fixed value, determining the N TAad j UStI _ t according to the micro base station serving the UE ; it should be noted that the N TAad j USt t is under the base station Each UE is a uniform amount of time.
  • the third mode when the N TAad j UStment is a change value, determining the N TAadjustment according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station.
  • the UE transmits the uplink signal to the time difference between the macro base station and the micro base station used to determine the N TA nt, it can be understood as determined according to the difference between the first value and the second TA TA value N TA nt.
  • Step 305 The micro base station sends the acquired N TAadjustment to the UE.
  • this step is an optional step.
  • the N TAad j UStment need not be sent to the UE.
  • the UE may be transmitted to all the micro base station within range N TAadjustment broadcast manner.
  • the N TAad j USt t may be sent to the corresponding UE in the range of the micro base station by means of dedicated signaling dedicated signaling, that is, the micro base station calculates according to the first UE.
  • N TAad j US nt then send N TAad j UStI _ t to the first UE by means of dedicated signaling.
  • Step 306 the UE acquires N TAad j U blood ent .
  • the N TAad j UStment may be acquired according to the communication protocol.
  • the N TAad j UStment is a fixed value.
  • the N TAad j ust t through dedicated signaling the N TAad j USt t is Different N TAadjustments determined by different UEs are a change value.
  • Step 307 When sending an uplink signal to the base station, the UE adjusts the foregoing according to the N TAad j UStment The transmission timing of the line signal.
  • the UE when the uplink signal is sent to the base station, the UE adjusts the transmission timing of the uplink signal according to the received TA value and the N TAad j UStment .
  • the timing may be adjusted in the following manner:
  • the transmission timing of the uplink signal is adjusted by using the first TA value, and the uplink is sent.
  • the time of the signal is advanced by the time of the first TA value;
  • the transmission timing of the uplink signal is adjusted by using the sum of the second TA value and the N TAadjustment , and the uplink signal is about to be sent.
  • the amount of time ahead of time (second TA+N TAad j UStI _ t ).
  • the UE when the UE is located away from the macro base station and is closer to the micro base station, only the micro base station provides services to the micro base station, so that only the uplink signal can be sent to the micro base station, and the second TA value can be used at this time.
  • the sum of the N TAadjustments adjusts the transmission timing of the uplink signal, that is, the time amount in which the time of transmitting the uplink signal is advanced (second TA+N TAad j USt t ).
  • the uplink signal is transmitted to the macro base station and the micro base station, respectively, it is also possible to adjust only by using the TA value.
  • the first TA value is used to adjust the transmission timing of the uplink signal, that is, the time when the time for transmitting the uplink signal is advanced by the first TA value; and the uplink signal is sent to the micro
  • the first TA value is used to adjust the transmission timing of the uplink signal, that is, the time when the time for transmitting the uplink signal is advanced by the first TA value.
  • the first TA value is a sum of the second TA value and the N TAad j UStment .
  • Step 308 The micro base station obtains a second received uplink signal window according to the entire first received uplink signal window, where the first received uplink signal window is a window for the preset macro base station and the micro base station to synchronously receive the uplink signal.
  • the adjusting, by the micro base station, the first received uplink signal window according to the N TAad j USt t includes: presetting N RX ustm on a basis of the first received uplink signal window;
  • the N RXadjustment is the N TAadjustment; or, when the N TAadjustment is a variable value, the ⁇ , _ > m ⁇ T m _ n ), n ⁇ 1,2,3,...,N ? where ⁇ legal £ _ fruit sends an uplink signal to the n UEs to the The time difference used by the macro base station and the micro base station, where N is the number of UEs that respectively transmit uplink signals to the macro base station and the micro base station.
  • step 307 and step 308 is not limited, that is, step 307 may be performed first, or step 308 may be performed first, or step 307 and step 308 may be performed simultaneously.
  • Step 309 The UE sends the uplink signal according to the adjusted transmission timing.
  • the Kth uplink radio subframe is forwarded to the corresponding downlink radio subframe by ⁇ + " ⁇ ⁇ - ⁇ + ⁇ . ⁇ ) ⁇ ⁇ ⁇ , transmitting;
  • ⁇ ⁇ indicates the threshold value configured by the base station for the UE;
  • the ⁇ ⁇ _ indicates the adjustment timing advance amount;
  • the N TA ffset indicates a timing advance offset amount; when the value is 0 when indicating that the K-th uplink radio sub-frame addressed to the macro base station, when the value is 1, indicating that the K-th uplink sub-frames sent to the above-described wireless micro base station;
  • the T s is a coefficient.
  • Step 31 0 The micro base station receives the uplink signal sent by the UE by using the second receiving uplink signal window.
  • the uplink signal After receiving the uplink signal, the uplink signal is demodulated.
  • Step 31 The macro base station receives the uplink signal sent by the UE by using the first received uplink signal window. Since the present invention only adjusts the timing of the uplink signal sent to the micro base station, the macro base station can receive the uplink signal sent by the UE according to the prior art, and demodulate the received uplink signal.
  • FIG. 4 a scenario in which a micro base station is deployed in a coverage area of a macro base station is shown.
  • the uplink signals of the UE-0, the UE-1, and the UE-2 need to be sent to the macro base station and sent to the micro base station for handover, and the uplink signal of the UE-3 needs to be sent to the micro base station.
  • the time difference between the uplink signal of UE-0 and UE-UE-2 reaching the macro base station and arriving at the micro base station is respectively.
  • ⁇ ⁇ -' and d and have ⁇ d ⁇ ⁇ mi.
  • the macro base station configures a first TA value for each UE, and the micro base station configures a second TA for each UE. value.
  • UE-0, UE-UE-2 for transmitting the uplink signal to the macro base station and the base station when transmitting the uplink signal to the macro base station, the UE adopts the first TA value adjustment timing, and when transmitting the uplink signal to the micro base station, adopts ( The second ⁇ + ⁇ ⁇ ⁇ ) adjusts the timing.
  • the uplink signal is only sent to the micro base station: when transmitting the uplink signal to the micro base station,
  • the macro base station receives the uplink signal window as RX wind . w l;
  • the micro base station receives the uplink signal window as RX wind . w 2 advance N RXadjustment .
  • the N RXadjustment is N TAadjustment ⁇ or, when the N TAadjustment is a change value, 1, 2, 3, ⁇ , ⁇ , where is the time difference used by the n UEs to send the uplink signal to the macro base station and the micro base station, and N is respectively sending an uplink signal to the macro base station and the micro base station The number of UEs.
  • UE-0 takes UE-0 as an example for description.
  • UE-0 when UE-0 sends an uplink signal to the macro base station, since the transmission timing of the uplink signal does not change, the macro base station receives the uplink signal window unchanged, and thus can be correctly demodulated by the macro base station.
  • the uplink signal sent to the micro base station is advanced by N TA u stment in advance of the second TA base, and the micro base station receives the uplink signal window ratio RX wind . w 2 in advance
  • N RXadjustment can correctly receive and demodulate the uplink signal. It should be noted that, as shown in FIG. 5, N is larger than ⁇ 7 ⁇ _.
  • the uplink signal sent by the UE is sent to the base station and sent to the base station, the uplink signals sent to the two base stations overlap. Therefore, if the uplink signal is not greater than ⁇ ⁇ - ⁇ , the uplink signal sent by the UE is When the macro base station is sent to the micro base station, the uplink signals sent to the two base stations do not overlap.
  • the uplink signal sent to the macro base station is advanced by ⁇ - than the uplink signal sent to the micro base station. Therefore, when the UE sends a signal to the micro base station in some time periods, the signal is sent to the macro base station, that is, the signals of the macro base station and the micro base station are overlapped. Due to the limited transmit power of the UE or the interference of the two signals, one of the uplink signals needs to be discarded, so that the uplink signal of the discarded party cannot be correctly demodulated or the demodulation performance is poor. Therefore, the use of this The method provided by the embodiment of the invention can make the signals sent by the UE to the two base stations not overlap as much as possible, thereby improving the demodulation performance.
  • the uplink signal sent to the micro base station is advanced by N TA on the basis of the second TA, so the micro base station receives the uplink signal window.
  • N RXad j UStment is advanced in advance of RX wmd w 2 to correctly receive and demodulate the upstream signal.
  • the embodiment of the present invention provides a method for transmitting uplink signal timing.
  • the UE side and the micro base station side respectively adjust the timing of transmitting the uplink signal and the uplink signal window according to the acquired N TAadjustment , so that the received uplink signal can be correctly demodulated. Improve the demodulation performance of the uplink signal.
  • the embodiment of the present invention provides an apparatus for transmitting uplink signal timing, and the apparatus may be a UE, as shown in FIG. 6, the apparatus includes: an obtaining unit 601, an adjusting unit 602, and a sending unit 603;
  • An obtaining unit 601, configured to acquire a timing advance adjustment parameter
  • the obtaining unit 601 is configured to:
  • timing advance adjustment parameter is a fixed value, determining the timing advance adjustment parameter according to a communication protocol;
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter sent by the micro base station by using dedicated signaling is received, where the timing advance adjustment parameter is sent according to the UE to the The time difference used by the macro base station and the micro base station is determined.
  • the timing advance adjustment parameter may be represented by N TAadjustment , where N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • the timing advance adjustment parameter can also be expressed in other manners, and the present invention does not limit the representation manner of the timing advance adjustment parameter.
  • the adjusting unit 602 is configured to adjust a transmission timing of the uplink signal according to the timing advance adjustment parameter acquired by the acquiring unit 601, when the uplink signal is sent to the base station;
  • the sending unit 603 is configured to send the uplink signal according to the transmission timing after the adjustment unit 602 adjusts.
  • the device further includes: a receiving unit 604, a first receiving module 6041, and a second receiving module 6042;
  • the receiving unit 604 receives the TA value that is sent by the base station to the user equipment UE.
  • the first receiving module 6041 is configured to receive a first TA value that is sent by the base station and configured for the UE, and use the first TA value to adjust the uplink when the uplink signal is sent to the macro base station.
  • the second receiving module 6042 is configured to receive a second TA value that is sent by the base station and configured by the UE, and use the second TA value to adjust when sending the uplink signal to the base station.
  • the transmission timing of the uplink signal; the base station is the macro base station or the micro base station.
  • the adjustment unit 602 includes: a first adjustment module 6021, a second adjustment module 6022;
  • the adjusting unit 602 is configured to: when transmitting an uplink signal to the base station, adjust a transmission timing of the uplink signal according to the TA value and the timing advance adjustment parameter.
  • the first adjustment module 6021 is configured to: when the uplink signal is sent to the macro base station, use the first TA value to adjust a transmission timing of the uplink signal;
  • the second adjustment module 6022 is configured to adjust a transmission timing of the uplink signal by using a sum of the second TA value and the timing advance adjustment parameter when transmitting an uplink signal to the micro base station.
  • the first TA value is a sum of the second TA value and the timing advance adjustment parameter. That is, when the uplink signal is sent to the macro base station and the micro base station, when the uplink signal is sent to the macro base station, the first TA value is used to adjust the transmission timing of the uplink signal; when the uplink signal is sent to the micro base station, The first TA value is also used to adjust the transmission timing of the uplink signal.
  • the adjusting unit 602 is configured to: when transmitting the uplink signal to the micro base station, adjust a transmission timing of the uplink signal by using a sum of the second TA value and a timing advance adjustment parameter . Further, the sending unit 603 is configured to:
  • the Kth uplink wireless subframe is advanced with the corresponding downlink wireless subframe.
  • N TA + x N TA iM + N TA ffset x T s seconds to transmit; wherein, the Nta represents the threshold value configured by the base station for the UE; and the N TAfli ⁇ mOTi indicates the adjustment Timing advance adjustment parameter; the N TA .
  • Ffset represents a timing advance offset; when the value is 0, it indicates that the Kth uplink radio subframe corresponds to the macro base station, and when the value is 1, it indicates that the Kth uplink radio subframe corresponds to the foregoing Micro base station; the T s is a coefficient.
  • An embodiment of the present invention provides an apparatus for adjusting an uplink signal transmission timing, where an acquisition unit obtains a timing advance adjustment parameter; when an uplink signal is sent to a base station, the adjustment unit is configured to adjust the transmission of the uplink signal according to the timing advance adjustment parameter. Timing; transmitting the uplink signal according to the adjusted transmission timing transmission unit, so that the received uplink signal can be correctly demodulated, and the demodulation performance of the uplink signal is improved.
  • the embodiment of the present invention provides another apparatus for uplink signal transmission timing.
  • the apparatus may be a UE.
  • the apparatus includes: a memory 801, a processor 802, a transmitter 803, a receiver 804, and a memory 801. For storing information including program routines;
  • the processor 802 coupled to the memory, the transmitter, and the receiver, for controlling execution of the program routine, including: acquiring a timing advance adjustment parameter; and transmitting the uplink signal to the base station, according to the acquired timing advance
  • the quantity adjustment parameter adjusts a transmission timing of the uplink signal
  • the timing advance adjustment parameter may be represented by N TAadjustment , where N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • the timing advance adjustment parameter can also be expressed in other manners, and the present invention does not limit the representation manner of the timing advance adjustment parameter.
  • the transmitter 803 is configured to send the uplink signal according to a transmission timing after the processor 802 adjusts. Further optionally, the device further includes: a receiver 804; Before the processor 802 acquires the timing advance adjustment parameter, the receiver 804 is configured to receive a TA value that is sent by the base station to the user equipment UE.
  • the receiver is configured to: receive a first TA value that is sent by the base station and configured for the UE, and use the first TA value to adjust a transmission timing of the uplink signal when the uplink signal is sent to the macro base station. And/or, receiving a second TA value that is sent by the base station and configured for the UE, and using the second TA value to adjust a transmission timing of the uplink signal when the uplink signal is sent to the micro base station;
  • the base station is the macro base station or the micro base station.
  • processor 802 is configured to:
  • timing advance adjustment parameter is a fixed value, determining the timing advance adjustment parameter according to a communication protocol;
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter sent by the micro base station by using dedicated signaling is received, where the timing advance adjustment parameter is sent according to the UE to the The time difference used by the macro base station and the micro base station is determined.
  • processor 802 is configured to:
  • the transmission timing of the uplink signal is adjusted according to the TA value and the timing advance adjustment parameter.
  • the processor 802 when the uplink signal is sent to the macro base station and the micro base station, the processor 802 is configured to: when transmitting the uplink signal to the macro base station, adjust the transmission timing of the uplink signal by using the first TA value; And transmitting, when the uplink signal is sent to the micro base station, adjusting a transmission timing of the uplink signal by using a sum of the second TA value and the timing advance adjustment parameter.
  • the first TA value is a sum of the second TA value and the timing advance adjustment parameter. That is, when the uplink signal is sent to the macro base station and the micro base station, when the uplink signal is sent to the macro base station, the first TA value is used to adjust the transmission timing of the uplink signal; when the uplink signal is sent to the micro base station, The first TA value is also used to adjust the transmission timing of the uplink signal.
  • the processor 802 when sending an uplink signal to the micro base station, is configured to: When the uplink signal is sent to the micro base station, the transmission timing of the uplink signal is adjusted by using the sum of the second TA value and the timing advance adjustment parameter.
  • the transmitter 803 is configured to:
  • the Kth uplink wireless subframe is advanced with the corresponding downlink wireless subframe.
  • N TA + x N TA iM + N TA ffset x T s seconds to transmit; wherein, the Nta represents the threshold value configured by the base station for the UE; and the N TAfli ⁇ mOTi indicates the adjustment Timing advance adjustment parameter; the N TA .
  • Ffset represents a timing advance offset; when the value is 0, it indicates that the Kth uplink radio subframe corresponds to the macro base station, and when the value is 1, it indicates that the Kth uplink radio subframe corresponds to the foregoing Micro base station; the T s is a coefficient.
  • An embodiment of the present invention provides an apparatus for adjusting an uplink signal transmission timing, where a timing advance adjustment parameter is acquired by a processor; and when an uplink signal is sent to a base station, a transmission timing of the uplink signal is adjusted according to the timing advance adjustment parameter; The adjusted transmission timing transmitter transmits the uplink signal, so that the received uplink signal can be correctly demodulated, and the demodulation performance of the uplink signal is improved.
  • the embodiment of the present invention provides an apparatus for uplink signal transmission timing, and the apparatus may be a micro base station.
  • the apparatus includes: an obtaining unit 901, an adjusting unit 902, a receiving unit 903, and an obtaining unit 901, configured to acquire Timing advance adjustment parameter;
  • the obtaining unit 901 is configured to:
  • timing advance adjustment parameter is a fixed value, determining the timing advance adjustment parameter according to a communication protocol;
  • timing advance adjustment parameter is a fixed value, determining, according to the micro base station serving the UE, the timing advance adjustment parameter;
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter is determined according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station.
  • the timing advance adjustment parameter can be represented by N TAadJustm ent , where N TAadJustment indicates The amount of advancement when the uplink information is transmitted on the basis of the timing advance TA.
  • N TAadJustment indicates The amount of advancement when the uplink information is transmitted on the basis of the timing advance TA.
  • the timing advance adjustment parameter can also be expressed in other manners, and the present invention does not limit the representation manner of the timing advance adjustment parameter.
  • the adjusting unit 902 is configured to adjust the first received uplink signal window according to the timing advance adjustment parameter acquired by the acquiring unit 901, to obtain a second received uplink signal window, where the first received uplink signal window is a preset macro base a window in which the station and the micro base station simultaneously receive the uplink signal;
  • the receiving unit 903 is configured to adjust, by using the adjusting unit 902, the obtained second received uplink signal window, and receive an uplink signal sent by the UE.
  • the apparatus further includes: a first sending unit 904, a second sending unit 905;
  • the first sending unit 904 is configured to send the timing advance adjustment parameter to the service by broadcasting. All UEs under the micro base station of the UE; or
  • the second sending unit 905 is configured to: The timing advance adjustment parameter is sent to the UE by dedicated signaling.
  • the second sending unit 905 is indicated by a broken line, indicating that the second sending unit 905 is optional, and of course A transmitting unit 904 is indicated by a broken line.
  • the adjusting unit 902 is configured to: the time value advanced on the basis of the first receiving uplink signal window is a first adjustment parameter;
  • the first adjustment parameter is greater than or equal to the timing advance adjustment parameter when the timing advance adjustment parameter is a fixed value; or, when the timing advance adjustment parameter is a change value, the first The adjustment parameter is greater than or equal to the first time difference, where the first time difference is the time difference between the time difference between the time that the N UEs send the uplink signal to the macro base station and the micro base station, and N is to send the uplink signal to the macro base separately.
  • the number of UEs of the station and the micro base station that is, when the N TA ad j com ent is a fixed straight day, the N RX adju stm en t > the ⁇ TA ad j u stm ent ;
  • N TA adju stm ent is a change value
  • the time difference between the signal used by the macro base station and the micro base station, and N is the number of UEs that respectively send uplink signals to the macro base station and the micro base station.
  • the receiving unit 903 is configured to:
  • the second receiving uplink signal window And receiving, by the second receiving uplink signal window, an uplink signal that is sent by the UE by using the adjusted transmission timing, where the adjusted transmission timing is that the UE adjusts the parameter according to the second TA value and the timing advance amount. And adjusting a transmission timing determined by the transmission timing of the uplink signal, where the second TA value is a value configured by the micro base station for the UE, and is sent by the macro base station or the micro base station to the UE.
  • the sum of the second TA value and the timing advance adjustment parameter is a first TA value, where the first TA value is a value configured by the macro base station for the UE, and The macro base station or the micro base station transmits to the UE. That is, the transmission timing after the adjustment is the transmission timing determined by the UE to adjust the transmission timing of the uplink signal according to the first TA value.
  • the embodiment of the invention provides a device for adjusting the timing of the uplink signal, and the timing advance adjustment parameter is obtained by the acquiring unit, and the adjusting unit is configured to adjust the first received uplink signal window according to the timing advance adjustment parameter to obtain the second received uplink signal window.
  • the first receiving uplink signal window is a window in which the preset macro base station and the micro base station synchronously receive the uplink signal
  • the receiving unit is configured to receive, by using the second receiving uplink signal window, an uplink signal sent by the UE, so that After receiving the uplink signal, the received uplink signal can be correctly demodulated, so that the uplink signal improves the demodulation performance.
  • the embodiment of the present invention provides an apparatus for uplink signal transmission timing.
  • the apparatus may be a micro base station.
  • the apparatus includes: a memory 1 101 , a processor 1102 , a receiver 11 03 , and a transmitter 1104 ;
  • a processor 11 02 coupled to the memory, the receiver, and the transmitter for controlling the program
  • the execution of the routine includes: acquiring a timing advance adjustment parameter;
  • the processor 1102 is configured to:
  • timing advance adjustment parameter is a fixed value, determining the timing advance adjustment parameter according to a communication protocol;
  • timing advance adjustment parameter is a fixed value, determining, according to the micro base station serving the UE, the timing advance adjustment parameter;
  • the timing advance adjustment parameter is a change value
  • the timing advance adjustment parameter is determined according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station.
  • the timing advance adjustment parameter may be represented by N TAadjustment , where N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • N TAadjustment represents an amount that is advanced when the uplink information is transmitted on the basis of the timing advance TA.
  • the timing advance adjustment parameter can also be expressed in other manners, and the present invention does not limit the representation manner of the timing advance adjustment parameter.
  • the processor 1102 is further configured to: adjust the first received uplink signal window according to the obtained timing advance adjustment parameter, and obtain a second received uplink signal window, where the first received uplink signal window is a preset macro base station and a window in which the micro base station synchronously receives the uplink signal;
  • the receiver 1103 is configured to receive, by the processor 1102, the obtained second received uplink signal window, and receive an uplink signal sent by the UE.
  • the device further includes: a transmitter 1104,
  • the transmitter 1104 After acquiring the timing advance adjustment parameter, the transmitter 1104 is configured to: when the timing advance adjustment parameter is determined according to the micro base station serving the UE, send the timing advance adjustment parameter to the service by broadcasting All UEs under the micro base station of the UE; or
  • the transmitter 1104 is configured to: when the timing advance adjustment parameter is determined according to a time difference used by the UE to send an uplink signal to the macro base station and the micro base station, Signaling is sent to the UE.
  • the processor 1102 is configured to: the time value advanced on the basis of the first received uplink signal window is a first adjustment parameter;
  • the timing advance adjustment parameter when the timing advance adjustment parameter is a fixed value, the first adjustment parameter is greater than Or the timing advance adjustment parameter is equal to; or, when the timing advance adjustment parameter is a change value, the first adjustment parameter is greater than or equal to a first time difference, where the first time difference is that the N UEs send an uplink signal.
  • the maximum time difference and a time difference between the macro base station using the micro base station, N is the number of each UE to transmit an uplink signal of the macro base station and the micro base station; that is, when the N TA ad j u stm ent For fixing a straight line, the N RX adjustm en t > the ⁇ TA ad j u stm ent ; or
  • N is the number of UEs that respectively send uplink signals to the macro base station and the micro base station.
  • the receiver 1 1 03 is used to:
  • the second receiving uplink signal window And receiving, by the second receiving uplink signal window, an uplink signal that is sent by the UE by using the adjusted transmission timing, where the adjusted transmission timing is that the UE adjusts the parameter according to the second TA value and the timing advance amount. And adjusting a transmission timing determined by the transmission timing of the uplink signal, where the second TA value is a value configured by the micro base station for the UE, and is sent by the macro base station or the micro base station to the UE.
  • the sum of the second TA value and the timing advance adjustment parameter is a first TA value, where the first TA value is a value configured by the macro base station for the UE, and The macro base station or the micro base station transmits to the UE. That is, the transmission timing after the adjustment is the transmission timing determined by the UE to adjust the transmission timing of the uplink signal according to the first TA value.
  • An embodiment of the present invention provides an apparatus for uplink signal transmission timing, which acquires a timing advance adjustment parameter by a processor, and adjusts a first received uplink signal window according to a timing advance adjustment parameter to obtain a second received uplink signal window, a receiver, And receiving, by using the second receiving uplink signal window, an uplink signal sent by the UE, so that after receiving the uplink signal, the received uplink signal may be correctly demodulated, so that the uplink signal improves the demodulation performance.
  • the device embodiments described above are merely illustrative, wherein the The units described by the separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, dedicated hardware, dedicated CPU, dedicated memory, dedicated memory, Special components are used to achieve this, but in the case of more than 4, the former is a better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • U disk mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Acces s Memory), disk or optical disk, etc., including a number of instructions to make a computer device (can It is a personal computer, a server, or a network device, etc.) that performs the methods described in various embodiments of the present invention.
  • a computer device can It is a personal computer, a server, or a network device, etc.

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Abstract

La présente invention concerne un procédé et un dispositif servant à la synchronisation de transmission d'un signal de liaison montante, qui se rapportent au domaine technique des réseaux de communication et peuvent améliorer la performance de démodulation de signaux de liaison montante. La présente invention consiste à : acquérir et à régler un paramètre de réglage d'avance de synchronisation; lors de l'envoi d'un signal de liaison montante à une station de base, régler la synchronisation de transmission du signal de liaison montante en fonction du paramètre de réglage d'avance de synchronisation; et en fonction de la synchronisation de transmission réglée, envoyer le signal de liaison montante. La solution fournie dans la présente invention est appropriée pour être utilisée pendant la synchronisation de transmission d'un signal de liaison montante.
PCT/CN2013/071674 2013-02-19 2013-02-19 Procédé et dispositif servant à une synchronisation de transmission d'un signal de liaison montante WO2014127506A1 (fr)

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CN201380001704.4A CN105409272B (zh) 2013-02-19 2013-02-19 一种上行信号传输定时的方法及装置

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CN105409272B (zh) 2019-09-13

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