WO2014127603A1 - Procédé d'émission en liaison montante, dispositif de terminal et système de communications - Google Patents

Procédé d'émission en liaison montante, dispositif de terminal et système de communications Download PDF

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Publication number
WO2014127603A1
WO2014127603A1 PCT/CN2013/079349 CN2013079349W WO2014127603A1 WO 2014127603 A1 WO2014127603 A1 WO 2014127603A1 CN 2013079349 W CN2013079349 W CN 2013079349W WO 2014127603 A1 WO2014127603 A1 WO 2014127603A1
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WO
WIPO (PCT)
Prior art keywords
base station
terminal device
micro base
uplink
access network
Prior art date
Application number
PCT/CN2013/079349
Other languages
English (en)
Chinese (zh)
Inventor
李亚娟
黄曲芳
常俊仁
曾清海
戴明增
张宏平
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
Publication of WO2014127603A1 publication Critical patent/WO2014127603A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/248—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where transmission power control commands are generated based on a path parameter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, a terminal device, and a communication system for uplink transmission.
  • the macro base station and the base station of the micro base station may be aggregated, where the micro base station may include multiple types of small base stations, for example: micro-cellular pico celL home base station HeNB, RRH (Remote Radio Head, The radio remote unit) or the like enables the terminal device to simultaneously communicate in the cell of the macro base station and the micro base station.
  • the uplink and downlink separation technologies may be used in the aggregated cell, that is, the uplink and downlink data of the terminal device are separated, so that the macro base station transmits the downlink data of the terminal device, and the micro base station receives the uplink of the terminal device. data.
  • the terminal device needs to determine the uplink transmit power, and transmit the uplink data to the access network by using the uplink transmit power.
  • the terminal device needs to acquire PL (Pathloss) when the terminal device communicates with the base station when determining the uplink transmit power.
  • the technical means for determining the uplink transmit power of the terminal device is: The terminal device calculates the PL according to the downlink signal of the received base station in the process of communicating with a base station, and determines the uplink transmit power according to the PL.
  • the terminal device cannot determine the uplink transmit power when communicating with the micro base station according to the existing technical means. Because the terminal device cannot determine the uplink transmit power, the power of the terminal device when transmitting the uplink data is often too large or too small. The uplink transmit power is too large to cause interference to other devices. If the uplink transmit power is too small, the quality of the uplink data may be poor. This will reduce the efficiency of the mobile communication system.
  • the embodiment of the present invention provides a method, a terminal device, and a communication system for uplink transmission, which can solve the problem that the terminal device cannot be determined when the terminal device cannot receive the downlink signal of the micro base station and cannot determine the PL when the terminal device communicates with the micro base station.
  • the problem of uplink transmit power.
  • an embodiment of the present invention provides a method for uplink transmission, including: a terminal device acquiring parameter information from a memory in an access network or the terminal device, where the parameter information includes one or more of the following combinations: a path loss PL when the terminal device communicates with the micro base station in the access network, and a PL when the terminal device communicates with the micro base station, when the terminal device communicates with the macro base station in the access network a compensation parameter of the PL, a transmission power control TPC adjustment value; the macro base station transmits downlink data of the terminal device in the access network, and the micro base station receives uplink data of the terminal device in the access network ;
  • the terminal device determines uplink transmit power according to the parameter information, and sends uplink data to the micro base station by using uplink transmit power.
  • the acquiring, by the terminal device, the parameter information from the access network includes: receiving, by the terminal device, the macro base station by using dedicated signaling or by using a broadcast The parameter information.
  • the method before the terminal device obtains the parameter information from the access network, the method further includes:
  • the terminal device sends an uplink reference signal SRS to the micro base station at a specified power, where the specified power is configured by the macro base station to the terminal device, so that the micro base station is configured according to the The specified power and the SRS notified by the macro base station acquire the parameter information, and provide the parameter information to the macro base station.
  • the determining, according to the parameter information, the uplink transmit power includes:
  • the determining, according to the parameter information, the uplink transmit power includes: determining an initial of the uplink transmit power Value
  • the uplink transmit power is obtained by adjusting the initial value using a TPC adjustment value.
  • the value of the value, the adjusting the initial value by using the TPC adjustment value to obtain the uplink transmit power includes:
  • an embodiment of the present invention provides a method for uplink transmission, including: acquiring, by a macro base station in the access network, parameter information, and transmitting the parameter information to a terminal device, where the parameter information includes the following one or a plurality of combinations: a path loss PL when the terminal device communicates with the micro base station in the access network, and a PL when the terminal device communicates with the micro base station with respect to the terminal a compensation parameter of the PL when the device communicates with the macro base station in the access network, and a transmission power control TPC adjustment value; the macro base station transmits downlink data of the terminal device in the access network, where the micro base station is in the Receiving uplink data of the terminal device in an access network; the parameter information is used by the terminal device to determine uplink transmit power;
  • the micro base station receives uplink data that is sent by the terminal device according to the uplink transmit power.
  • the obtaining, by the macro base station in the access network, the parameter information includes:
  • the macro base station acquires a maximum transmit power of the micro base station, where a maximum transmit power of the micro base station is a transmit power of the common reference information CRS sent by the micro base station;
  • the obtaining, by the macro base station in the access network, the parameter information includes:
  • the macro base station in the access network notifies the micro base station of the specified power, and the designated power is configured by the macro base station to the terminal device to send an SRS;
  • the micro base station acquires the parameter information according to the specified power and the SRS sent by the terminal device, and provides the parameter information to the macro base station;
  • the macro base station receives the parameter information sent by the micro base station.
  • the obtaining, by the macro base station in the access network, the parameter information includes:
  • the macro base station in the access network sends a maximum transmit power value of the terminal device to the micro base station in the access network;
  • the micro base station subtracts the maximum transmit power value of the terminal device from the received power of the terminal device on the physical uplink shared channel PUSCH and the power headroom PHR of the terminal device on the physical uplink shared channel PUSCH, a PL when the terminal device communicates with the micro base station;
  • the macro base station in the access network receives a PL when the terminal device in the access network communicates with the micro base station by using the micro base station.
  • the sending the parameter information to the terminal device includes: the macro base station in the access network, by using dedicated signaling, or by using the broadcast The terminal device sends the parameter information.
  • the sending the parameter information to the terminal device includes:
  • an embodiment of the present invention provides a terminal device, including: a first receiving module, configured to acquire parameter information from a memory in an access network or the terminal device, where the parameter information includes one or more of the following: Combination: a path loss PL when the terminal device communicates with the micro base station in the access network, and a PL when the terminal device communicates with the micro base station, with respect to the terminal device and the access network a compensation parameter of the PL when the macro base station communicates, a transmission power control TPC adjustment value; the macro base station transmits downlink data of the terminal device in the access network, and the micro base station receives the terminal in the access network Uplink data of the device;
  • a first analyzing module configured to determine an uplink transmit power according to the parameter information, and send uplink data to the micro base station by using uplink transmit power.
  • the first receiving module is further configured to receive the parameter information that is sent by the macro base station by using dedicated signaling or by using a broadcast.
  • the method further includes: a first sending module, configured to send an uplink reference signal SRS to the micro base station with a specified power before receiving the parameter information sent by the macro base station by using dedicated signaling or by broadcasting, where the specified power is
  • the macro base station is configured to the terminal device, so that the micro base station acquires the parameter information according to the specified power and the SRS notified by the macro base station, and provides the parameter information to the macro base station.
  • the first analysis module includes:
  • An acquiring unit configured to acquire a PL when the terminal device communicates with the macro base station
  • An analyzing unit configured to calculate, by using a PL and a compensation parameter when the terminal device communicates with the macro base station, a PL when the terminal device communicates with the micro base station;
  • a power determining unit configured to determine the uplink transmit power according to a PL when the terminal device communicates with the micro base station; or determine the uplink transmit power according to the calculated PL.
  • the first analyzing module includes:
  • An initial value determining unit configured to determine an initial value of the uplink transmit power
  • the adjusting unit is further configured to superimpose the at least two values as the TPC adjustment value to obtain a superposition result, and adjust the initial value by using the superposition result to obtain the uplink transmission power;
  • an embodiment of the present invention provides a communication system, including: a macro base station, configured to transmit downlink data of a terminal device; and a micro base station, configured to receive uplink data of the terminal device, where:
  • the macro base station includes:
  • a second analysis module configured to obtain parameter information
  • a second sending module configured to send the parameter information to the terminal device, where the parameter information includes one or more combinations of: a path loss PL and a path when the terminal device communicates with the micro base station in the access network a compensation parameter and a transmission power control TPC adjustment value of a PL when the terminal device communicates with the micro base station with respect to the PL when the terminal device communicates with the macro base station in the access network;
  • the micro base station includes:
  • the second receiving module is configured to receive uplink data that is sent by the terminal device according to the uplink transmit power.
  • the second analyzing module includes:
  • a power acknowledgment unit configured to acquire a maximum transmit power of the micro base station, where a maximum transmit power of the micro base station is a transmit power of the common reference information CRS sent by the micro base station;
  • a first path loss acquiring unit configured to add a preset value to a maximum transmit power of the micro base station to obtain a PL when the terminal device communicates with the micro base station in the access network.
  • the second analyzing module includes:
  • a first notification unit configured to notify the micro base station of the specified power, where the specified power is configured by the macro base station to be used by the terminal device to send an SRS;
  • the micro base station further includes: a third analyzing module, configured to acquire the parameter information according to the specified power and the SRS sent by the terminal device, and provide the parameter information to the macro base station.
  • a third analyzing module configured to acquire the parameter information according to the specified power and the SRS sent by the terminal device, and provide the parameter information to the macro base station.
  • the second analyzing module includes:
  • a second notification unit configured to send a maximum transmit power value of the terminal device to the micro base station in the access network
  • a second path loss acquiring unit configured to receive a PL when the terminal device in the access network communicates with the micro base station
  • the third analysis module is further configured to subtract a maximum transmit power value of the terminal device from a received power of the terminal device on a physical uplink shared channel PUSCH and a power of the terminal device on a physical uplink shared channel PUSCH.
  • the remaining amount PHR is obtained by acquiring the PL when the terminal device communicates with the micro base station.
  • the second sending module is further configured to send the parameter information to the terminal device by using dedicated signaling or by using a broadcast.
  • the method includes: the second analyzing module is further configured to acquire, when the terminal device communicates with the micro base station,
  • a screening module configured to detect whether a PL of the terminal device communicates with the micro base station exceeds a preset threshold
  • the second sending module is further configured to send the parameter information to the terminal device if the PL of the terminal device communicates with the micro base station exceeds a preset threshold.
  • the uplink transmission method, the terminal device, and the communication system provided by the embodiment of the present invention can enable the terminal device to acquire the communication between the terminal device and the micro base station according to the parameter information sent by the access network when the terminal device cannot receive the downlink signal of the micro base station.
  • the PL of the time determines the uplink transmit power by this, or directly determines the uplink transmit power by applying the TPC adjustment technique by using the parameter information sent by the access network.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive in the prior art.
  • the PL that is not able to determine the uplink transmission power when the terminal device communicates with the micro base station due to the downlink signal to the micro base station cannot be determined.
  • the uplink transmit power can still be determined according to the embodiment of the present invention, so that the terminal device can send the uplink data with an appropriate power, thereby improving The operational efficiency of mobile communication systems.
  • FIG. 1 is a flowchart of a method for uplink transmission according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for uplink transmission according to an embodiment of the present invention
  • FIG. 2b is another flowchart of another method for uplink transmission according to an embodiment of the present invention
  • FIG. 2 is a flowchart of still another method for uplink transmission according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for uplink transmission according to an embodiment of the present invention
  • Another flow chart of another method for uplink transmission
  • FIG. 3 is a flowchart of still another method for uplink transmission according to an embodiment of the present invention
  • FIG. 4a is still another method for uplink transmission according to an embodiment of the present invention
  • FIG. 4 is a flowchart of still another method for uplink transmission according to an embodiment of the present invention
  • FIG. 4 is a flowchart of still another method for uplink transmission according to an embodiment of the present invention
  • FIG. 4 is a flowchart of still another method for uplink transmission according to an embodiment of the present invention
  • FIG. 4 is a flow
  • FIG. 4c is still another flow of another method for uplink transmission according to an embodiment of the present invention
  • Figure 4d is still another flowchart of a method for uplink transmission according to an embodiment of the present invention
  • Figure 4e is still another flowchart of a method for uplink transmission according to an embodiment of the present invention
  • Is an embodiment of the present invention A further flowchart of a method for uplink transmission is provided.
  • FIG. 4 is a further flowchart of a method for uplink transmission according to an embodiment of the present invention
  • FIG. 5a is a schematic diagram of an embodiment of the present invention
  • FIG. 5 is a schematic diagram of another data interaction according to a specific example of a method for uplink transmission according to an embodiment of the present disclosure;
  • FIG. 5 is a schematic diagram of still another data interaction according to a specific example of a method for uplink transmission according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of data interaction according to another embodiment of a method for uplink transmission according to an embodiment of the present disclosure
  • FIG. 6b is another schematic diagram of data interaction according to another embodiment of a method for uplink transmission according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of still another data interaction of a specific example of another method for uplink transmission according to an embodiment of the present disclosure
  • FIG. 7a is a schematic diagram of data interaction of a specific example of a method for uplink transmission according to an embodiment of the present disclosure
  • FIG. 7b is another schematic diagram of data interaction according to another embodiment of a method for uplink transmission according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of data interaction according to another specific example of a method for uplink transmission according to an embodiment of the present disclosure.
  • FIG. 8b is another schematic diagram of data interaction according to another embodiment of a method for uplink transmission according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of still another data interaction of a specific example of a method for uplink transmission according to an embodiment of the present disclosure
  • FIG. 9 is a schematic diagram of data interaction of a specific example of a method for uplink transmission according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 10a is a schematic structural diagram of another terminal device according to an embodiment of the present invention
  • FIG. 10b is another schematic structural diagram of another terminal device according to an embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of still another communication system according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of still another communication system according to an embodiment of the present invention
  • FIG. 1b is another schematic structural diagram of another communication system according to an embodiment of the present invention
  • FIG. 11c is a schematic diagram of an embodiment of the present invention
  • FIG. 1 id is a schematic structural diagram of still another communication system according to an embodiment of the present invention
  • FIG. 1 is another communication provided by an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a network architecture of an uplink transmission communication system according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a network architecture of a terminal device for uplink transmission according to an embodiment of the present invention.
  • the embodiment of the present invention may be used in an access network, where the access network includes a macro base station and a micro base station, and the macro base station and the micro base station are two different base stations, and the macro base station is in access.
  • the downlink data of the terminal device is transmitted in the network, and the micro base station receives the uplink data of the terminal device in the access network.
  • the embodiment of the present invention provides a method for uplink transmission.
  • the method includes: 101.
  • a terminal device acquires parameter information from a memory in an access network or the terminal device.
  • the parameter information includes one or more of the following combinations: PL (Pathloss) when the terminal device communicates with the micro base station in the access network, and PL when the terminal device communicates with the micro base station, with respect to the terminal device and the access network.
  • PL Pulthloss
  • the compensation parameter of the PL in the macro base station communication, the transmission power control TPC adjustment value, the compensation parameter is used by the terminal device to determine that the terminal device communicates with the macro base station in the access network Letter PL and so on.
  • the compensation parameter may include the transmit power of the common reference information CRS sent by the macro base station in the access network or a preset value, so that the terminal device uses the compensation parameter to the macro equipment of the terminal device and the access network.
  • the PL at the time of communication is processed.
  • the access network may repeatedly obtain parameter information and send it to the terminal device, that is, the terminal device may repeatedly perform 101-102, so that the terminal device may determine the uplink transmit power periodically, semi-statically or in real time.
  • the path loss of the terminal device and the micro base station pre-stored in the terminal device may be multiple.
  • the terminal device may use the pre-stored multiple fixed values according to the preset rule. One of them is obtained, and the obtained fixed value is used as the PL when the terminal device communicates with the micro base station.
  • the terminal device determines uplink transmit power according to the parameter information, and sends uplink data to the micro base station by using uplink transmit power.
  • the terminal device can determine the uplink transmit power according to the parameter information by using common technical means, for example:
  • a PR ACH Physical Random Access Channel
  • a PUSCH Physical Uplink Shared Channel
  • the terminal device can receive the micro When the downlink signal of the base station is used, the PL information when the terminal device communicates with the micro base station is obtained according to the parameter information sent by the access network, and the uplink transmission power is determined according to the parameter information sent by the access network, or the uplink transmission is directly determined by applying the TPC adjustment technology by using the parameter information sent by the access network. power.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is so unable to determine the problem of the uplink transmission power.
  • the uplink transmit power can still be determined according to the embodiment of the present invention, so that the terminal device can send the uplink data with an appropriate power, thereby improving The operational efficiency of mobile communication systems.
  • the terminal device receives parameter information that is sent by the macro base station by using dedicated signaling.
  • the parameter information includes a path loss PL when the terminal device communicates with the micro base station.
  • the parameter information may be determined by the macro base station and encapsulated in the signaling by the common technical means, and then sent to the terminal device, for example, as shown in FIG. 2al, there is a terminal in the cell of the macro base station.
  • the path loss PL when the terminal device 2 communicates with the micro base station is transmitted to the terminal device 1 so that the terminal device 1 calculates the uplink power based on the PL.
  • the macro base station can also obtain the maximum transmit power in the cell of the micro base station, for example, the transmit power of the CRS (Common Reference Signal).
  • the maximum transmit power in the cell refers to the power when the base station sends downlink data to the cell edge.
  • a value of a maximum transmission power in a cell greater than or equal to the micro base station is transmitted to the terminal device as a PL when the terminal device communicates with the micro base station.
  • the transmit power transmits uplink data to the micro base station.
  • the terminal device receives parameter information that is sent by the macro base station by using a broadcast.
  • the parameter information includes a path loss PL when the terminal device communicates with the micro base station.
  • the micro base station can transmit the transmit power of the CRS of the micro base station to the macro base station as an average value and broadcast it by the macro base station, wherein the terminal device in the uplink and downlink separation scenario can use the average value as the PL when communicating with the base station.
  • the macro base station can also obtain a PL broadcast to the terminal device when the terminal device in the uplink and downlink separation scenario communicates with the micro base station by using the technical means of the embodiment.
  • the macro base station can also determine each terminal device in the cell range of the macro base station in the uplink and downlink separation scenario, and can obtain the communication between the terminal device in the uplink and downlink separation scenario and the micro base station by using the technical method in this embodiment. And calculate the average value, and then send the average value to the macro base station and broadcast by the macro base station to all the terminal devices in the cell coverage of the macro base station, wherein the terminal device in the uplink and downlink separation scenario can average the The value is the PL when communicating with the micro base station.
  • the method for uplink transmission may include:
  • the terminal device sends an uplink reference signal SRS to the micro base station by using a specified power.
  • the designated power is configured by the macro base station to the terminal device, so that the micro base station acquires the parameter information according to the specified power and SRS notified by the macro base station, and provides the parameter information to the macro base station.
  • the macro base station in the access network sends configuration information to the terminal device and the micro base station,
  • the configuration information is used to indicate that the terminal device transmits the specified time-frequency resource to the micro base station at a specified power.
  • the micro base station can acquire the transmission power when the terminal device transmits the SRS.
  • the macro base station in the access network can determine the power of the SRS sent by the terminal device in advance with the micro base station by using a common technical means.
  • the micro base station has learned the power of the SRS sent by the terminal device, and the macro base station then redirects the terminal to the terminal.
  • the device sends the configuration information, so that the determined power between the macro base station and the micro base station is notified to the terminal device through the configuration information.
  • the terminal device receives a path loss PL when the terminal device that is sent by the macro base station communicates with the micro base station in the access network.
  • the power of the terminal device to transmit the uplink reference signal SRS and the time-frequency resource used for transmitting the uplink reference signal SRS may be configured by the macro base station to the terminal device by using a common technical means, and the power configured by the macro base station to the terminal device is For the specified power, the terminal device may send the uplink reference signal SRS to the micro base station by using the specified power configured by the macro base station and using the time-frequency resource configured by the macro base station.
  • the macro base station notifies the micro base station to receive the SRS sent by the terminal device, and informs the micro base station of the specified power allocated to the terminal device and the time-frequency resource allocated to the terminal device through dedicated signaling, because the micro base station determines that the terminal device sends the The time-frequency resource used by the SRS, the micro base station can receive the SRS sent by the terminal device, and determine the received power when the micro base station receives the SRS.
  • the micro base station may use the difference between the specified power of the SRS transmitted by the terminal device and the received power when the micro base station receives the SRS as the PL when the terminal device communicates with the micro base station. Finally, the micro base station can forward the determined path loss PL from the terminal device to the micro base station to the terminal device through the macro base station.
  • the method for uplink transmission provided by the embodiment of the present invention may include:
  • the terminal device receives a compensation parameter sent by the macro base station, and a path loss PL when the macro base station communicates.
  • the terminal device only receives the downlink data transmitted by the macro base station, and the path loss PL of the station communication.
  • the terminal device may process the PL when communicating with the macro base station according to the compensation parameter sent by the macro base station, to obtain the PL according to the communication with the micro base station, for example:
  • the compensation parameter sent by the macro base station may be a preset value such as 2, and the terminal device may subtract 2 from the PL when communicating with the macro base station, and use the difference as the PL when the terminal device communicates with the micro base station. Further, the compensation parameter may be the transmit power of the CRS transmitted by the macro base station, and the terminal device may determine the transmit power of the CRS transmitted by the macro base station as a compensation parameter by using common technical means.
  • the method for uplink transmission may include:
  • the terminal device determines an initial value of the uplink transmit power.
  • the initial value of the uplink transmit power is a value of the uplink transmit power determined by the terminal device, for example, may be the uplink transmit power determined by the terminal device last time.
  • the initial value may be before the terminal device enters the scene separated from the uplink and the downlink.
  • the last determined uplink transmit power after entering the scenario where the uplink and downlink are separated, the terminal device determines the current uplink transmit power according to the TPC (Transmission Power Control) adjustment value sent by the received macro base station.
  • the terminal device may first obtain the PL when communicating with the micro base station, and then determine the uplink transmit power according to the PL, and adopt the specific implementation manner in this embodiment.
  • the obtained uplink transmission power is taken as an initial value. For example: After the terminal device enters the scenario of uplink and downlink separation, the value is determined, and then the current uplink transmit function is determined according to the TPC adjustment value sent by the macro base station in a subsequent process.
  • the TPC adjustment value includes at least two values that are transmitted by the macro base station in time sequence as a TPC adjustment value.
  • the specific implementation manner of using the TPC adjustment value to adjust the initial value to obtain the uplink transmit power may include multiple types, including:
  • the order is the time sequence in which the macro base station transmits the value as the TPC adjustment value, for example, the adjustment mode of the single adjustment. among them:
  • the TPC adjustment values received by the terminal device are 4, -3, 4, -6, 2, 3
  • the adjustment mode may be notified to the terminal device by the macro base station by using common configuration signaling, and the configuration signaling is used to indicate that the terminal device adopts one of the two adjustment modes, and the configuration signaling may be adjusted by the macro base station and the TPC.
  • the device may be sent to the terminal device in a semi-static manner, that is, the macro base station may send the configuration signaling after sending several TPC adjustment values to the terminal device.
  • the uplink transmission method provided by the embodiment of the present invention when the terminal device is unable to receive the downlink signal of the micro base station, obtains the PL when the terminal device communicates with the micro base station according to the parameter information sent by the access network, and determines the uplink transmit power by using the parameter information sent by the access network. Or, by using the parameter information sent by the access network, the TPC adjustment technology is applied to directly determine the uplink transmit power.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is so unable to determine the problem of the uplink transmission power.
  • the uplink transmit power can still be determined according to the embodiment of the present invention, so that the terminal device can send the uplink data with an appropriate power, thereby improving The operational efficiency of mobile communication systems.
  • the embodiment of the present invention provides another method for uplink transmission, as shown in FIG. 3, including:
  • the macro base station in the access network acquires parameter information, and sends the parameter information to the terminal device.
  • the parameter information includes one or more of the following: a path loss PL when the terminal device communicates with the micro base station in the access network, and a PL when the terminal device communicates with the micro base station with respect to the terminal device.
  • the compensation parameter of the PL when the macro base station in the access network communicates, the transmission power control TPC adjustment value, and the compensation parameter are used by the terminal device to determine the PL when the terminal device communicates with the macro base station in the access network.
  • the macro base station transmits the downlink data of the terminal device in the access network
  • the micro base station receives the uplink data of the terminal device in the access network
  • the parameter information is used by the terminal device to determine the uplink transmit power
  • the macro base station in the access network may repeatedly obtain the parameter information and send the parameter information to the terminal device.
  • the macro base station in the access network may reacquire the terminal device and the micro base station in the access network every 5 seconds.
  • the path loss PL and TPC adjustment values during communication are sent to the terminal device.
  • the macro base station in the access network may reacquire the compensation parameter when the network traffic meets the preset threshold, and send the compensation parameter to the terminal device.
  • the parameter information acquired by the macro base station in the access network may also be obtained by analyzing the macro base station in the access network, or may be analyzed and obtained by the micro base station in the access network. To the macro base station.
  • the micro base station receives uplink data that is sent by the terminal device according to the uplink transmit power.
  • the uplink data sent by the terminal device according to the determined uplink transmit power may be received by the micro base station in the access network.
  • the uplink transmission method provided by the embodiment of the present invention can enable the terminal device to acquire the PL when the terminal device communicates with the micro base station according to the parameter information sent by the access network when the terminal device cannot receive the downlink signal of the micro base station.
  • the uplink transmit power is determined, or the uplink transmit power is directly determined by applying the TPC adjustment technique by using the parameter information sent by the access network.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is so unable to determine the problem of the uplink transmission power.
  • the uplink transmit power can still be determined according to the embodiment of the present invention, so that the terminal device can still determine the uplink transmit power.
  • the end device can send uplink data with appropriate power, thereby improving the operational efficiency of the mobile communication system.
  • another method for uplink transmission provided by the embodiment of the present invention may include:
  • the macro base station in the access network acquires parameter information, and sends the parameter information to the terminal device by using dedicated signaling.
  • the micro base station in the access network receives uplink data sent by the terminal device according to the uplink transmit power.
  • another method for uplink transmission provided by the embodiment of the present invention may include:
  • the macro base station in the access network acquires parameter information, and sends the parameter information to the terminal device by using a broadcast.
  • the micro base station in the access network receives uplink data that is sent by the terminal device according to the uplink transmit power.
  • another method for uplink transmission provided by the embodiment of the present invention may include:
  • the macro base station in the access network acquires a maximum transmit power of the micro base station.
  • the maximum transmit power of the micro base station is the transmit power of the CRS transmitted by the micro base station in the actual application. Since the CRS needs to be sent to all the receivers in the coverage of the cell signal, the micro base station often needs to transmit with a large transmit power. CRS, so the transmit power of the CRS can be taken as the maximum transmit power.
  • the PL when the terminal device communicates with the micro base station in the access network is greater than or equal to the maximum transmit power of the micro base station.
  • the macro base station may use a value greater than the transmit power of the CRS transmitted by the micro base station according to a preset rule, as a PL when the terminal device communicates with the micro base station, for example, the preset rule is that the maximum transmit power of the micro base station is When the transmission power of the CRS transmitted by the micro base station is 4, the macro base station can use 6 as the PL when the terminal device communicates with the micro base station.
  • the micro base station in the access network receives uplink data sent by the terminal device according to the uplink transmit power.
  • another method for uplink transmission provided by the embodiment of the present invention may include:
  • the macro base station in the access network notifies the micro base station of the designated power.
  • the designated power is configured by the macro base station to the terminal device for transmitting the SRS, so that the terminal device sends the SRS to the micro base station by using the specified power.
  • the macro base station receives a path loss when the terminal device in the access network communicates with the micro base station by using the micro base station.
  • the micro base station acquires parameter information according to the specified power and an SRS sent by the terminal device, and provides the parameter information to the macro base station. Further, as shown in FIG. 4e, the method for uplink transmission provided by the embodiment of the present invention may include:
  • the macro base station in the access network sends a maximum transmit power value of the terminal device to the micro base station in the access network.
  • the micro base station can be based on the maximum transmit power value of the terminal device, and the terminal is configured.
  • the received power on the physical uplink shared channel PUSCH and the power headroom PHR of the terminal device on the PUSCH are used to obtain the path loss when the terminal device communicates with the micro base station.
  • the macro base station in the access network subtracts the maximum transmit power value of the terminal device from the received power of the terminal device on the physical uplink shared channel PUSCH and the terminal device on the physical uplink shared channel PUSCH
  • the power headroom PHR acquires a PL when the terminal device communicates with the micro base station.
  • the micro base station can obtain the PUSCH receiving power of the terminal device and the PHR of the terminal device on the PUSCH by using common technical means. And the difference between the maximum transmit power value of the terminal device and the PUSCH received power of the terminal device and the PHR of the terminal device on the PUSCH is used as the PL when the terminal device communicates with the micro base station, that is, the maximum transmit power value of the PL-terminal device-PUSCH Receive power - PHR.
  • the macro base station in the access network receives a PL when the terminal device sent by the micro base station in the access network communicates with the micro base station.
  • the micro base station may periodically acquire the PL when the terminal device communicates with the micro base station and send it to the terminal device through the macro base station; or the PL when the acquired terminal device communicates with the micro base station exceeds the pre-preparation When the threshold is set, the PL when the terminal device communicates with the micro base station is sent to the terminal device through the macro base station.
  • the method for uplink transmission provided by the embodiment of the present invention may include:
  • the macro base station in the access network sends the TPC adjustment value and/or the TPC adjustment mode to the terminal device.
  • the terminal device determines the uplink transmit power according to the initial value and the TPC adjustment value.
  • the TPC adjustment mode can be various, for example:
  • the accumulating adjustment means that each TPC adjustment value sent by the terminal device to the macro base station is applied to the last used uplink transmit power, and the latest uplink transmit power value is obtained, for example, when the uplink/downlink separation scenario is received, the terminal device receives
  • the adjustment mode may be notified to the terminal device by the macro base station by using common configuration signaling
  • the configuration signaling is used to indicate that the terminal device adopts an adjustment mode
  • the configuration signaling may be sent by the macro base station together with the TPC adjustment value to the terminal device.
  • the macro base station may send the configuration signaling after sending several TPC adjustment values to the terminal device.
  • the method for uplink transmission provided by the embodiment of the present invention may include:
  • the macro base station in the access network acquires a PL when the terminal device communicates with the micro base station.
  • the macro base station can obtain the PL when the terminal device communicates with the micro base station by using the solution in this embodiment.
  • the access network will include the terminal device and the micro Parameter information of the PL when the base station communicates is transmitted to the terminal device
  • the parameter information includes one or more of the following combinations: a path loss PL when the terminal device communicates with the micro base station in the access network, a PL when the terminal device communicates with the micro base station, and a macro base station communicates with the macro base station in the access network.
  • the compensation parameter of the PL, the transmission power control TPC adjustment value, and the compensation parameter are used by the terminal device to determine the PL when the terminal device communicates with the macro base station in the access network. So that the terminal device determines the uplink transmit power according to the parameter information.
  • the parameter information sent by the access network to the terminal device does not include the parameter information of the PL when the terminal device communicates with the micro base station, or the parameter that is not sent to the terminal device. Information and terminate the process.
  • the micro base station receives uplink data that is sent by the terminal device according to the uplink transmit power.
  • the uplink transmission method provided by the embodiment of the present invention can enable the terminal device to acquire the PL when the terminal device communicates with the micro base station according to the parameter information sent by the access network when the terminal device cannot receive the downlink signal of the micro base station.
  • the uplink transmit power is determined, or the uplink transmit power is directly determined by applying the TPC adjustment technique by using the parameter information sent by the access network.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is so unable to determine the problem of the uplink transmission power.
  • the uplink transmit power can still be determined according to the embodiment of the present invention, so that the terminal device can send the uplink data with an appropriate power, thereby improving Operational efficiency of mobile communication systems According to the technical solutions provided by the embodiments of the present invention, those skilled in the art can obtain the following technical scenarios:
  • a macro base station and a micro base station in the access network may exist between the terminal device and the terminal device.
  • macro represents a macro base station
  • small cell represents a micro base station
  • UE represents a terminal device, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE.
  • the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation.
  • the macro obtains the transmit power of the CRS sent by the small cell.
  • the macro transmits a value of the transmit power of the CRS that is greater than the small cell as the PL when the UE communicates with the small cell, and sends the signal to the UE through dedicated signaling, and the macro configures the UE and the small cell to perform uplink and downlink separation.
  • the UE calculates the PUSCH and/or according to the PL when the UE sends the small cell to communicate with the small cell.
  • PRACH uplink transmit power and calculated uplink transmit power on PUSCH and / or
  • the uplink data is sent on the PRACH.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the communication between the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE. Send the PL when the UE communicates with the small cell.
  • the optional parallel connection with the 8 may also be that the macro actively detects the downlink signal that the UE can receive the small cell, and notifies the UE to communicate with the small cell according to the downlink signal of the small cell by using the common technical means. PL.
  • the information exchange process as shown in FIG. 5b may exist between the macro base station and the micro base station and the terminal device in the access network, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE.
  • the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation.
  • the macro obtains the transmit power of the CRS sent by the small cell.
  • the macro transmits a value of the transmit power of the CRS that is greater than the small cell as the PL when the UE communicates with the small cell, and sends the signal to the UE through dedicated signaling, and the macro configures the UE and the small cell to perform uplink and downlink separation.
  • the UE calculates the uplink transmit power of the PUSCH and/or PRACH according to the PL when the UE communicates with the small cell, and calculates the uplink transmit power on the PUSCH and/or
  • the uplink data is transmitted on the PRACH, and the calculated uplink transmission power is taken as an initial value.
  • the UE receives the TPC adjustment value sent by the macro, and calculates the uplink transmission power again according to the initial value and the TPC adjustment value sent by the macro, and sends the uplink data on the PUSCH and/or the PRACH with the recalculated uplink transmission power.
  • the UE can detect the downlink signal of the small cell.
  • the UE may receive the TPC adjustment value sent by the macro multiple times and repeatedly calculate the uplink transmission power, and then send the uplink data on the PUSCH and/or the PRACH with the latest calculated uplink transmission power.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE. Send the PL when the UE communicates with the small cell.
  • the macro is configured to detect that the UE can receive the downlink signal of the small cell, and notify the UE to use the common technical means to communicate with the small cell according to the downlink signal of the small cell.
  • the information exchange process shown in Figure 5c may exist between the macro base station and the micro base station in the access network and the terminal device, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE. 3. Macro detection Whether the UE can receive the downlink signal of the small cell.
  • the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation.
  • the macro obtains the transmit power of the CRS sent by the small cell. 6.
  • the macro transmits a value of the transmit power of the CRS that is greater than the small cell to the cell in which the UE communicates with the small cell and broadcasts it to the macro cell.
  • the macro is configured to perform uplink and downlink separation between the UE and the small cell. In practical applications, the macro The technology in the field is often broadcast continuously in the cell.
  • the information about the service, the operator identification information, and the like, which the person is familiar with, can add the PL when the UE communicates with the small cell to the information to be broadcasted by using common technical means, thereby broadcasting the PL when the UE communicates with the small cell to The cell of the macro.
  • the UE obtains the PL of the communication between the UE and the small cell from the broadcast, calculates the uplink transmit power of the PUSCH and/or the PRACH, and sends the uplink data on the PUSCH and/or the PRACH with the calculated uplink transmit power, and
  • the calculated uplink transmission power is taken as an initial value.
  • the UE receives the TPC adjustment value sent by the macro, and calculates the uplink transmission power again according to the initial value and the TPC adjustment value sent by the macro, and sends the uplink data on the PUSCH and/or PRACH with the recalculated uplink transmission power.
  • the UE may receive the TPC adjustment value sent by the macro multiple times and repeatedly calculate the uplink transmission power, and then use the latest calculated uplink transmission power on the PUSCH and/or the PRACH. Send upstream data.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE. Send the PL when the UE communicates with the small cell.
  • the macro may actively detect that the UE can receive the downlink signal of the small cell, and notify the UE that the UE obtains the communication with the small cell according to the downlink signal of the small cell by using common technical means.
  • PL may actively detect that the UE can receive the downlink signal of the small cell, and notify the UE that the UE obtains the communication with the small cell according to the downlink signal of the small cell by using common technical means.
  • the information exchange process shown in FIG. 6a may exist between the macro base station and the micro base station in the access network and the terminal device, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and the small cell in the access network negotiate to provide uplink and downlink separation services for the UE.
  • the macro detects whether the UE can receive the downlink signal of the small cell.
  • the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation.
  • the macro and the small cell negotiate to configure the UE to allocate the specified power and time-frequency resources, and notify the UE.
  • the UE sends an SRS to the small cell according to the specified power and time-frequency resources configured by the macro, and the macro configures the UE and the small cell to perform uplink and downlink separation.
  • the small cell receives the SRS sent by the UE on the time-frequency resource configured by the macro to the UE, and uses the difference between the specified power and the received power when the small cell receives the SRS as the PL when the UE communicates with the small cell.
  • the small cell sends the PL when the UE communicates with the small cell to the macro, and the macro forwards it to the UE.
  • the macro may encapsulate the PL in the communication between the UE and the small cell in the signaling for configuring the uplink and downlink separation, and send the signal to the UE, so that the UE can acquire the UE and the small after receiving the signaling sent by the macro.
  • the uplink and downlink separation is performed simultaneously with the PL at the time of cell communication.
  • the UE calculates the PUSCH and/or according to the PL when the UE transmits the macro and the small cell.
  • the uplink transmit power of the PRACH, and the uplink data is transmitted on the PUSCH and/or PRACH with the calculated uplink transmit power.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the communication between the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE. Send the PL when the UE communicates with the small cell.
  • the macro can actively detect that the UE can receive the downlink signal of the small cell, and notify the UE to use the common technical means to perform the downlink signal according to the small cell.
  • the information exchange process shown in FIG. 6b may exist between the macro base station and the micro base station and the terminal device in the access network, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE. 3. Macro detection Whether the UE can receive the downlink signal of the small cell.
  • the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation. 5. If the UE does not receive the downlink signal of the small cell, the UE sends the SRS to the small cell according to the specified power and the time-frequency resource configured by the macro, and the macro configures the UE and the small cell to perform uplink and downlink separation.
  • the Macro needs to notify the small cell of the information that the UE sends the SRS.
  • the small cell receives the SRS sent by the UE on the time-frequency resource configured by the macro to the UE, and uses the difference between the specified power and the received power when the small cell receives the SRS as the PL when the UE communicates with the small cell.
  • the small cell sends the PL when the UE communicates with the small cell to the macro, and the macro forwards it to the UE.
  • the macro may encapsulate the PL in the communication between the UE and the small cell in the signaling for configuring the uplink and downlink separation, and send the signal to the UE, so that the UE can acquire the UE and the small after receiving the signaling sent by the macro.
  • the uplink and downlink separation is performed simultaneously with the PL at the time of cell communication.
  • the UE calculates the PUSCH and/or according to the PL when the UE transmits the macro and the small cell.
  • PRACH uplink transmit power and calculated uplink transmit power on PUSCH and / or
  • the uplink data is transmitted on the PRACH, and the calculated uplink transmission power is taken as an initial value. 10.
  • the UE receives the TPC adjustment value sent by the macro, and calculates the uplink transmission power again according to the initial value and the TPC adjustment value sent by the macro, and sends the uplink data on the PUSCH and/or the PRACH with the recalculated uplink transmission power. Before the UE can detect the downlink signal of the small cell, the UE may receive the TPC adjustment value sent by the macro multiple times and repeatedly calculate the uplink transmission power, and then use the latest calculated uplink transmission power on the PUSCH and/or the PRACH. Send upstream data.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the small cell communication between the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE. Send the PL when the UE communicates with the small cell.
  • the macro is configured to detect that the UE can receive the downlink signal of the small cell, and notify the UE to use the common technical means to communicate with the small cell according to the downlink signal of the small cell.
  • the information exchange process as shown in FIG. 6c may exist between the macro base station and the micro base station in the access network and the terminal device, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE.
  • the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation.
  • the UE If the UE does not receive the downlink signal of the small cell, the UE sends the SRS to the macro according to the specified power and the time-frequency resource configured by the macro, and the macro configures the UE and the small cell to perform the uplink and downlink separation.
  • the small cell receives the SRS sent by the UE on the time-frequency resource configured by the macro to the UE, and uses the difference between the received power and the received power when the small cell receives the SRS as the PL when the UE communicates with the small cell.
  • a plurality of UEs exist in the cell of the macro for example, UE2, UE3, and the like do not receive the downlink signal of the small cell, and perform 5-6 repeatedly, so that the small cell sends according to each UE that does not receive the downlink signal of the small cell.
  • For the power of the SRS calculate the PL of each UE that receives the downlink signal of the small cell and the small cell, and take the average value.
  • the power of the SRS sent by the UE1 is P1
  • the power of the SRS sent by the UE2 is P2
  • the power of the SRS transmitted by the UE3 is P3
  • the PL when the UE1 communicates with the small cell calculated by the small cell is PL1
  • the PL when the UE2 communicates with the small cell is PL2, UE3 and 81 ⁇ 11. ! ⁇ ? 13
  • Bay ' J small cell can obtain the average PL ' of PLl, PL2, PL3.
  • the small cell sends the average value to the macro and broadcasts it to the macro cell by the macro.
  • the macro often continuously broadcasts the service information well known to those skilled in the art in the cell, the operator identification information, and the like.
  • Information macro can be added to the information to be broadcast by the UE when communicating with the small cell by common technical means, so that the PL when the UE communicates with the small cell is broadcast to the macro cell, and the macro can also be captured multiple times. Average, and update the latest average obtained in the macro broadcast.
  • the UE obtains an average value from the broadcast, and calculates an uplink transmit power of the PUSCH and/or the PRACH according to the average value, and sends the uplink data on the PUSCH and/or the PRACH with the calculated uplink transmit power.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the communication between the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE. Send the PL when the UE communicates with the small cell.
  • the macro can actively detect that the UE can receive the small cell.
  • the downlink signal is sent, and the PL that instructs the UE to communicate with the small cell according to the downlink signal of the small cell by using a common technical means is notified.
  • the information exchange process shown in Figure 7a may exist between the macro base station and the micro base station and the terminal device in the access network, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE.
  • the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation.
  • the macro sends the compensation parameter to the UE through dedicated signaling, and the macro configures the UE and the small cell to perform uplink and downlink separation.
  • the UE acquires the PL when the UE communicates with the macro according to the downlink data sent by the macro.
  • the UE determines the PL when the UE communicates with the small cell according to the PL and the compensation parameter when the UE communicates with the macro.
  • the macro may encapsulate the compensation parameter in the signaling for configuring the uplink and downlink separation and send the signal to the UE, so that the UE may perform the uplink and downlink separation while acquiring the compensation parameter after receiving the signaling sent by the macro.
  • the UE calculates the uplink transmit power of the PUSCH and/or the PRACH according to the PL when communicating with the small cell, and sends the uplink data on the PUSCH and/or the PRACH with the calculated uplink transmit power.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE.
  • the macro is configured to detect that the UE can receive the downlink signal of the small cell, and notify the UE to use the common technical means to communicate with the small cell according to the downlink signal of the small cell.
  • the information exchange process shown in Figure 7b may exist between the macro base station and the micro base station in the access network and the terminal device, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE.
  • the UE can receive the downlink signal of the small cell. 4. If the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation.
  • the macro sends the compensation parameter to the UE through dedicated signaling, and the macro configures the UE and the small cell to perform uplink and downlink separation.
  • the UE acquires the PL when the UE communicates with the macro according to the downlink data sent by the macro. 7.
  • the UE determines the PL when the UE communicates with the small cell according to the PL and the compensation parameter when the UE communicates with the macro.
  • the macro may encapsulate the compensation parameter in the signaling for configuring the uplink and downlink separation and send the signal to the UE, so that the UE may perform the uplink and downlink separation while acquiring the compensation parameter after receiving the signaling sent by the macro.
  • the UE calculates the uplink transmit power of the PUSCH and/or the PRACH according to the PL when communicating with the small cell, and sends the uplink data on the PUSCH and/or the PRACH with the calculated uplink transmit power, and the calculated uplink is performed.
  • the transmission power is used as an initial value.
  • the UE receives the TPC adjustment value sent by the macro, and adjusts according to the initial value and the TPC sent by the macro.
  • the value again calculates the uplink transmit power and transmits the uplink data on the PUSCH and/or PRACH with the recalculated uplink transmit power.
  • the UE may receive the TPC adjustment value sent by the macro multiple times and repeatedly calculate the uplink transmission power, and then use the latest calculated uplink transmission power on the PUSCH and/or the PRACH. Send upstream data.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the communication between the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE. Send the PL when the UE communicates with the small cell.
  • the macro may actively detect that the UE can receive the downlink signal of the small cell, and notify the UE that the UE obtains the communication with the small cell according to the downlink signal of the small cell by using common technical means.
  • PL may actively detect that the UE can receive the downlink signal of the small cell, and notify the UE that the UE obtains the communication with the small cell according to the downlink signal of the small cell by using common technical means.
  • the information exchange process shown in Figure 8a may exist between the macro base station and the micro base station in the access network, and the terminal device includes:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE. 3. Macro detection Whether the UE can receive the downlink signal of the small cell.
  • the macro configures the UE and the small cell to perform uplink and downlink separation. 5. If the UE does not receive the downlink signal of the small cell. Then, the macro obtains the maximum transmit power value of the UE, and notifies the small cell of the maximum transmit power value of the UE, and the macro configures the UE and the small cell to perform uplink and downlink separation. 6. The small cell acquires the PUSCH received power of the UE and the PHR of the UE on the PUSCH.
  • the small cell obtains the PL when the UE communicates with the small cell according to the maximum transmit power value of the UE, the PUSCH received power of the UE, and the PHR of the UE on the PUSCH.
  • the PL of the UE when communicating with the small cell is the maximum transmit power value of the UE - the PUSCH received power - PHR.
  • the small cell sends the PL when the UE communicates with the small cell to the macro, and the macro forwards to the UE through dedicated signaling.
  • the macro may encapsulate the PL in the communication between the UE and the small cell in the signaling for configuring the uplink and downlink separation, and send the signal to the UE, so that the UE can acquire the UE and the small after receiving the signaling sent by the macro.
  • the uplink and downlink separation is performed simultaneously with the PL at the time of cell communication.
  • the UE calculates the PUSCH and/or according to the PL when the UE sends the small cell to communicate with the small cell.
  • the uplink transmit power of the PRACH, and the uplink data is transmitted on the PUSCH and/or PRACH with the calculated uplink transmit power.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the communication between the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE. Send the PL when the UE communicates with the small cell.
  • the macro may actively detect that the UE can receive the downlink signal of the small cell, and notify the UE that the UE obtains the communication with the small cell according to the downlink signal of the small cell by using common technical means.
  • PL may actively detect that the UE can receive the downlink signal of the small cell, and notify the UE that the UE obtains the communication with the small cell according to the downlink signal of the small cell by using common technical means.
  • the information exchange process shown in FIG. 8b may exist between the macro base station and the micro base station and the terminal device in the access network, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and the small cell in the access network negotiate to provide uplink and downlink separation services for the UE.
  • the macro detects whether the UE can receive the downlink signal of the small cell.
  • the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation.
  • the macro obtains the maximum transmit power value of the UE, and notifies the small cell of the maximum transmit power value of the UE, and the macro configures the UE and the small cell to perform uplink and downlink separation.
  • the small cell acquires the PUSCH received power of the UE and the PHR of the UE on the PUSCH.
  • the small cell obtains the PL when the UE communicates with the small cell according to the maximum transmit power value of the UE, the PUSCH received power of the UE, and the PHR of the UE on the PUSCH.
  • the PL of the UE when communicating with the small cell is the maximum transmit power value of the UE - the PUSCH received power - PHR.
  • the small cell sends the PL when the UE communicates with the small cell to the macro, and the macro forwards to the UE through dedicated signaling.
  • the macro may encapsulate the PL in the communication between the UE and the small cell in the signaling for configuring the uplink and downlink separation, and send the signal to the UE, so that the UE can acquire the UE and the small after receiving the signaling sent by the macro.
  • the uplink and downlink separation is performed simultaneously with the PL at the time of cell communication.
  • the UE calculates the PUSCH and/or according to the PL when the UE sends the small cell to communicate with the small cell.
  • PRACH uplink transmit power and calculated uplink transmit power on PUSCH and / or
  • the uplink data is transmitted on the PRACH, and the calculated uplink transmission power is taken as an initial value.
  • the UE receives the TPC adjustment value sent by the macro, and calculates the uplink transmission power again according to the initial value and the TPC adjustment value sent by the macro, and sends the uplink data on the PUSCH and/or the PRACH with the recalculated uplink transmission power. Before the UE can detect the downlink signal of the small cell, the UE may receive the TPC adjustment value sent by the macro multiple times and repeatedly calculate the uplink transmit power, and then use the latest calculated uplink transmit power on the PUSCH and/or the PRACH. Send upstream data.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the small cell communication between the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE. Send the PL when the UE communicates with the small cell.
  • the macro is configured to detect that the UE can receive the downlink signal of the small cell, and notify the UE to use the common technical means to communicate with the small cell according to the downlink signal of the small cell.
  • the information exchange process shown in Figure 8c may exist between the macro base station and the micro base station in the access network and the terminal device, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE. 3. Macro detection Whether the UE can receive the downlink signal of the small cell.
  • the macro configuration UE and the small cell perform uplink and downlink separation. 5. If the UE does not receive the downlink signal of the small cell. Then, the macro obtains the maximum transmit power value of the UE, and notifies the small cell of the maximum transmit power value of the UE, and the macro configures the UE and the small cell to perform uplink and downlink separation.
  • the small cell acquires the PUSCH received power of the UE and the PHR of the UE on the PUSCH.
  • the small cell calculates the PL when the UE communicates with the small cell according to the maximum transmit power value of the UE, the PUSCH received power of the UE, and the PHR of the UE on the PUSCH.
  • the PL of the UE when communicating with the small cell is the maximum transmit power value of the UE - the PUSCH received power - PHR.
  • the small cell sends the PL when the UE communicates with the small cell to the macro, and is used by the macro.
  • the signaling is forwarded to the UE.
  • UE2 UE3, and the like do not receive the downlink signal of the small cell, and perform 5-8 repeatedly, so that the small cell sends according to each UE that does not receive the downlink signal of the small cell.
  • the maximum transmit power value, the PUSCH receive power, and the PHR on the PUSCH calculate the PL of each UE that receives the downlink signal of the small cell and the small cell to average, for example: the maximum transmission sent by UE1
  • the power value is PI
  • the PUSCH receiving power of UE1 is ⁇
  • the PHR of UE1 on the PUSCH is PHR1
  • the maximum transmit power value sent by UE2 is P2
  • the PUSCH received power of UE2 is P2
  • the PHR of UE2 on PUSCH is PHR2
  • the maximum transmit power value sent by UE3 is P3, the PUSCH receive power of UE3 is ⁇ 3, and the PHR of UE3 on PUSCH is PHR3.
  • the small cell sends the average value to the macro, and is broadcast by the macro to the cell of the macro.
  • the macro often continuously broadcasts the service information well known to those skilled in the art in the cell, the operator identification information, and the like.
  • Information macro can be added to the information to be broadcast by the UE when communicating with the small cell by common technical means, so that the PL when the UE communicates with the small cell is broadcast to the macro cell, and the macro can also obtain the average multiple times. Value, and update the latest average obtained in the macro's broadcast.
  • the UE obtains an average value from the broadcast, and calculates an uplink transmit power of the PUSCH and/or PRACH according to the average value, and transmits the uplink data on the PUSCH and/or PRACH with the calculated uplink transmit power.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the PL of the UE and the small cell according to the downlink signal of the small cell, and notify the macro that the UE is no longer to the UE.
  • PL the macro may also actively detect that the UE can receive the downlink signal of the small cell, and notify the UE that the UE obtains the communication with the small cell according to the downlink signal of the small cell by using common technical means.
  • the information exchange process shown in FIG. 9 may exist between the macro base station and the micro base station in the access network and the terminal device, including:
  • the macro decision in the access network is that the UE is configured to be uplink and downlink separated.
  • the macro and small cell in the access network negotiate to provide uplink and downlink separation services for the UE.
  • the UE can receive the downlink signal of the small cell, the macro configuration UE and the small cell perform uplink and downlink separation.
  • the macro sends the TPC adjustment value to the UE. It should be noted that the macro may encapsulate the TPC adjustment value in the signaling for configuring the uplink and downlink separation and send the signal to the UE, so that after receiving the signaling sent by the macro, the UE may perform the uplink and downlink while acquiring the TPC adjustment value. Separation.
  • the UE receives the TPC adjustment value sent by the macro, and takes the uplink transmission power calculated last time before the uplink and downlink separation as the initial value. Then, the uplink transmit power is calculated again according to the initial value and the TPC adjustment value sent by the macro, and the uplink data is transmitted on the PUSCH and/or PRACH with the recalculated uplink transmit power. Before the UE can detect the downlink signal of the small cell, the UE may receive the TPC adjustment value sent by the macro multiple times and repeatedly calculate the uplink transmit power, and then use the latest calculated uplink transmit power on the PUSCH and/or the PRACH. Send upstream data.
  • the UE can detect the downlink signal of the small cell, and the UE can use the common technical means to obtain the UE and the small cell according to the downlink signal of the small cell.
  • PL and notifies the macro that the UE does not send the PL when the UE communicates with the small cell.
  • the macro is detected by the macro to detect that the UE can receive the downlink signal of the small cell, and notify the UE that the UE obtains the downlink cell signal of the small cell to communicate with the small cell by using a common technical means.
  • an embodiment of the present invention provides a terminal device i, as shown in FIG. 10, including: a first receiving module 1002, configured to acquire parameter information from a memory in an access network or the terminal device, where The parameter information includes one or more combinations of: a path loss PL when the terminal device communicates with the micro base station in the access network, and a PL when the terminal device communicates with the micro base station with respect to the terminal device a compensation parameter of a PL when communicating with a macro base station in the access network, a transmission power control TPC adjustment value, the compensation parameter being used by the terminal device to determine the terminal device and an Acer in the access network
  • the PL of the station transmits the downlink data of the terminal device in the access network, and the micro base station receives the uplink data of the terminal device in the access network.
  • the first receiving module 1002 is further configured to receive the parameter information that is sent by the macro base station by using dedicated signaling or by using a broadcast.
  • the first analyzing module 1003 is configured to determine an uplink transmit power according to the parameter information, and send uplink data to the micro base station by using uplink transmit power.
  • the terminal device provided by the embodiment of the present invention can enable the terminal device to obtain the PL when the terminal device communicates with the micro base station according to the parameter information sent by the access network, and determine the uplink according to the parameter information sent by the access network.
  • the transmit power, or the parameter information sent through the access network is directly determined by the TPC adjustment technique.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is unable to determine the uplink transmit power. question.
  • the terminal device! ⁇ can also include:
  • the first sending module 1001 is configured to send an uplink reference signal SRS to the micro base station with a specified power before receiving the parameter information that is sent by the macro base station by using dedicated signaling or by broadcasting, where the specified power is
  • the macro base station is configured to the terminal device, so that the micro base station acquires the parameter information according to the specified power and the SRS notified by the macro base station, and provides the parameter information to the macro base station.
  • the first analysis module 1003 may include:
  • the obtaining unit 10031 is configured to acquire a PL when the terminal device communicates with the macro base station.
  • the analyzing unit 10032 is configured to calculate, when the terminal device communicates with the macro base station, the PL and the compensation parameter, the PL when the terminal device communicates with the micro base station.
  • the power determining unit 10033 is configured to determine the uplink transmit power according to the PL when the terminal device communicates with the micro base station, or determine the uplink transmit power according to the calculated PL.
  • the first analysis module 1003 may include: an initial value determining unit 10034, configured to determine an initial value of the uplink transmit power.
  • the adjusting unit 10035 is configured to adjust the initial value by using a TPC adjustment value to obtain the uplink transmission power.
  • the adjusting unit 10035 is further configured to superimpose the at least two values as the TPC adjustment value to obtain a superposition result, and adjust the initial value by using the superposition result to obtain the uplink transmission power; or
  • the terminal device provided by the embodiment of the present invention can enable the terminal device to obtain the PL when the terminal device communicates with the micro base station according to the parameter information sent by the access network, and determine the uplink according to the parameter information sent by the access network.
  • the transmit power, or the parameter information sent through the access network is directly determined by the TPC adjustment technique.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is so unable to determine the problem of the uplink transmission power.
  • the embodiment of the present invention provides a communication system 11, as shown in FIG. 11, comprising: a macro base station 11A, configured to transmit downlink data of a terminal device; and a micro base station 11B, configured to receive an uplink of the terminal device. Data, where:
  • the macro base station 11 A includes:
  • the second analysis module 1101 is configured to obtain parameter information.
  • the second sending module 1102 is configured to send the parameter information to the terminal device, where the parameter information includes one or more combinations of: a path loss PL when the terminal device communicates with the micro base station in the access network, The PL when the terminal device communicates with the micro base station, the PL compensation parameter when the terminal device communicates with the macro base station in the access network, and the PL when the transmission power is controlled by the macro base station in the TPC tone .
  • the micro base station 11 B includes: The second receiving module 1103 is configured to receive uplink data that is sent by the terminal device according to the uplink transmit power.
  • the second sending module 1102 is further configured to send the parameter information to the terminal device by using dedicated signaling or by using a broadcast.
  • the communication system provided by the embodiment of the present invention can enable the terminal device to obtain the PL when the terminal device communicates with the micro base station according to the parameter information sent by the access network, and determine the uplink according to the parameter information sent by the access network.
  • the transmit power, or the parameter information sent through the access network is directly determined by the TPC adjustment technique.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is so unable to determine the problem of the uplink transmission power.
  • the uplink transmit power can still be determined according to the embodiment of the present invention, so that the terminal device can send the uplink data with an appropriate power, thereby improving The operational efficiency of mobile communication systems.
  • the macro base station HA may further include:
  • the adjusting module 1104 is configured to send the TPC adjustment value and/or the TPC adjustment mode to the terminal device, so that the terminal device adjusts according to the initial value of the uplink transmit power and the TPC adjustment value and/or TPC.
  • the mode determines the uplink transmit power, and the initial value of the uplink transmit power is an uplink transmit power determined by the terminal device last time.
  • the second analyzing module 1101 may include:
  • the power confirming unit 11011 is configured to acquire a maximum transmit power of the micro base station, where a maximum transmit power of the micro base station is a transmit power of the common reference information CRS sent by the micro base station.
  • the second analysis module 1101 may include: a first notification unit 11013, configured to notify a specified power to the micro base station, where the specified power is configured by the macro base station
  • the terminal device is configured to send an SRS.
  • the micro base station 11B further includes: a third analyzing module 1105, configured to acquire the parameter information according to the specified power and the SRS sent by the terminal device, and provide the parameter information to the macro base station.
  • the second analysis module 1101 may include: a second notification unit 11015, configured to send, to the access network, a maximum transmit power value of the terminal device, as shown in FIG. Micro base station.
  • the second path loss acquiring unit 11014 is configured to receive a PL when the terminal device sent by the micro base station in the access network communicates with the micro base station.
  • the third analysis module 1105 is further configured to subtract a maximum transmit power value of the terminal device from a received power of the terminal device on a physical uplink shared channel (PUSCH) and a physical uplink shared channel (PUSCH) of the terminal device.
  • the power headroom PHR acquires a PL when the terminal device communicates with the micro base station.
  • the macro base station 11 A may include:
  • the second analysis module 1101 is further configured to acquire a PL when the terminal device communicates with the micro base station.
  • the screening module 1106 is configured to detect whether the PL when the terminal device communicates with the micro base station exceeds a preset threshold.
  • the second sending module 1102 is further configured to: if the PL of the terminal device communicates with the micro base station exceeds a preset threshold, send the parameter information to the terminal device.
  • the communication system for the uplink transmission provided by the embodiment of the present invention can enable the terminal device to acquire the PL when the terminal device communicates with the micro base station according to the parameter information sent by the access network when the terminal device cannot receive the downlink signal of the micro base station. In this way, the uplink transmit power is determined, or the uplink transmit power is directly determined by applying the TPC adjustment technique by using the parameter information sent by the access network.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is so unable to determine the problem of the uplink transmission power.
  • the uplink transmit power can still be determined according to the embodiment of the present invention, so that the terminal device can send the uplink data with an appropriate power, thereby improving The operational efficiency of mobile communication systems.
  • an embodiment of the present invention provides a communication system for uplink transmission, where the communication system includes a computing node, a macro base station, and a micro base station, and the computing node, the macro base station, and the micro base station are connected to each other, as shown in the figure.
  • the computing node includes: a processor 121, a communication interface 122, a memory 123, and a bus 124.
  • the processor 121, the communication interface 122, and the memory 123 complete communication with each other through the bus 124.
  • the memory 123 is configured to store data that needs to be stored by the computing node during operation, where:
  • the processor 121 is configured to obtain parameter information by the macro base station in the access network through the communication interface 122, and send the parameter information to the terminal device, where the parameter information includes one or more of the following combinations: a path loss PL when the terminal device communicates with the micro base station in the access network, and a PL when the terminal device communicates with the micro base station, when the terminal device communicates with the macro base station in the access network a compensation parameter of the PL, a transmission power control TPC adjustment value, the compensation parameter being used by the terminal device to determine a PL when the terminal device communicates with a macro base station in the access network;
  • the downlink data of the terminal device is transmitted in the access network, and the micro base station receives uplink data of the terminal device in the access network; the parameter information is used by the terminal device to determine uplink transmit power.
  • the processor 121 is further configured to receive, by using the communication interface 122, the uplink data sent by the terminal device according to the uplink transmit power by the micro base station.
  • the uplink transmission communication system can enable the terminal device to acquire the PL when the terminal device communicates with the micro base station according to the parameter information sent by the access network when the terminal device cannot receive the downlink signal of the micro base station, and This determines the uplink transmit power, or directly determines the uplink transmit power by applying the TPC adjustment technique through the parameter information sent by the access network.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is so unable to determine the problem of the uplink transmission power.
  • the uplink transmit power can still be determined according to the embodiment of the present invention, so that the terminal device can send the uplink data with an appropriate power, thereby improving The operational efficiency of mobile communication systems.
  • the communication system includes a computing node, a macro base station, and a micro base station, and in an optional implementation manner, the computing node may be the macro base station or the micro base station, which is not shown in the figure.
  • the implementation function is similar to the previous description and will not be described. Therefore, the communication system in the embodiment of the present invention may include two nodes, a macro base station and a micro base station, and the functions implemented by the method are as described in the previous method.
  • an embodiment of the present invention provides a terminal device for uplink transmission, as shown in FIG. 13 , including: a processor 1 31, a communication interface 1 32, a memory 1 33, and a bus 1 34.
  • the communication interface 1 32 and the memory 133 complete communication with each other through the bus 124.
  • the memory 133 is configured to store data that needs to be stored by the computing node during operation, where:
  • the processor 1 31 is configured to obtain parameter information from the access network or the memory 1 33 through the communication interface 1 32, where the parameter information includes one or more combinations of: the terminal device and the a path loss PL when the micro base station communicates in the access network, and the terminal device communicates with the micro base station
  • the PL of the signaling time is relative to the compensation parameter of the PL when the terminal device communicates with the macro base station in the access network, and the transmission power controls the TPC adjustment value, and the compensation parameter is used by the terminal device to determine the terminal device.
  • a PL when communicating with a macro base station in the access network; the macro base station transmitting downlink data of the terminal device in the access network, where the micro base station receives the terminal device in the access network Upstream data.
  • the processor 131 is further configured to determine an uplink transmit power according to the parameter information, and send uplink data to the micro base station by using the uplink transmit power by using the communication interface 132.
  • the specific structure of the terminal is not specifically described in this embodiment, but it may include functional units for implementing the steps of the previous method, and these units may be included in the processor 131, which is not described in this embodiment.
  • the terminal device of the uplink transmission provided by the embodiment of the present invention can enable the terminal device to acquire the PL when the terminal device communicates with the micro base station according to the parameter information sent by the access network when the terminal device cannot receive the downlink signal of the micro base station, and This determines the uplink transmit power, or directly determines the uplink transmit power by applying the TPC adjustment technique through the parameter information sent by the access network.
  • the embodiment of the present invention can determine the uplink transmit power when the terminal device cannot receive the downlink signal of the micro base station, and solves the problem that the terminal device cannot receive the downlink signal of the micro base station in the prior art.
  • the PL when the terminal device communicates with the micro base station is so unable to determine the problem of the uplink transmission power.
  • the uplink transmit power can still be determined according to the embodiment of the present invention, so that the terminal device can send the uplink data with an appropriate power, thereby improving The operational efficiency of mobile communication systems.
  • the program may be implemented by a computer program to instruct related hardware, and the program may be stored in a computer readable storage medium, and when executed, the program may include the flow of an embodiment of the methods as described above.
  • the storage medium may be a magnetic disk, an optical disk, or a read-only storage memory.

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Abstract

La présente invention se rapporte au domaine technique des communications sans fil. L'invention concerne un procédé d'émission en liaison montante, un dispositif de terminal et un système de communications, pouvant déterminer une puissance d'émission en liaison montante d'un dispositif de terminal lorsque le dispositif de terminal ne peut pas recevoir un signal en liaison descendante provenant d'une micro-station de base. Le procédé selon la présente invention comporte les étapes suivantes: un dispositif de terminal acquiert des informations de paramètres à partir d'un réseau d'accès ou d'une mémoire du dispositif de terminal, les informations de paramètres comportant une ou plusieurs combinaisons d'un affaiblissement de trajet (PL) lorsque le dispositif de terminal communique avec une micro-station de base sur le réseau d'accès, d'un paramètre de compensation du PL lorsque le dispositif de terminal communique avec la micro-station de base à un PL lorsque le dispositif de terminal communique avec une macro station de base sur le réseau d'accès, et une valeur de réglage de régulation de puissance d'émission (TPC); la macro station de base émettant, sur le réseau d'accès, des données en liaison descendante du dispositif de terminal, et la micro-station de base recevant, sur le réseau d'accès, données en liaison montante du dispositif de terminal; et le dispositif de terminal détermine une puissance d'émission en liaison montante en fonction des informations de paramètres, et envoie les données en liaison montante à la micro-station de base en utilisant la puissance d'émission en liaison montante.
PCT/CN2013/079349 2013-02-22 2013-07-15 Procédé d'émission en liaison montante, dispositif de terminal et système de communications WO2014127603A1 (fr)

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