WO2014100952A1 - Procédé et équipement d'utilisateur pour la communication mobile - Google Patents

Procédé et équipement d'utilisateur pour la communication mobile Download PDF

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Publication number
WO2014100952A1
WO2014100952A1 PCT/CN2012/087334 CN2012087334W WO2014100952A1 WO 2014100952 A1 WO2014100952 A1 WO 2014100952A1 CN 2012087334 W CN2012087334 W CN 2012087334W WO 2014100952 A1 WO2014100952 A1 WO 2014100952A1
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WO
WIPO (PCT)
Prior art keywords
pusch
compensation value
power
base station
mcs
Prior art date
Application number
PCT/CN2012/087334
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English (en)
Chinese (zh)
Inventor
陈宝军
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/087334 priority Critical patent/WO2014100952A1/fr
Priority to CN201280077059.XA priority patent/CN104798407B/zh
Publication of WO2014100952A1 publication Critical patent/WO2014100952A1/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
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • 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
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/262—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account adaptive modulation and coding [AMC] scheme
    • 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
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and user equipment for mobile communication.
  • the user equipment UE User Equipment
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the base station selects the modulation and coding mode MCS for the UE in two ways: one is that the base station selects a fixed MCS for all served UEs; the other is the base station for each The UEs of the service adaptively select the MCS.
  • the UE determines a manner in which the base station selects a fixed MCS for all serving UEs when the PUSCH transmits the transmit power of the initial transmission frame with the base station, and the base station satisfies the signal quality of all served UEs on the initial transmission frame.
  • the base station selects a lower MCS for the MCS demodulation requirement, so that the UE's transmit power is low, resulting in a high bit error rate on the PUSCH.
  • the base station Determining, by the UE, the manner in which the base station adaptively selects the MCS for each serving UE when the PUSCH transmits the transmit power of the initial transmission frame with the base station, and when the channel quality is sufficiently poor, the base station selects a lower MCS, so that the base station selects a lower MCS.
  • the UE's transmit power is low, resulting in a high bit error rate on the PUSCH.
  • the base station selects a higher MCS, so that the UE's transmit power is too high, resulting in wasted power and The frequency neighboring area causes stronger interference.
  • Embodiments of the present invention provide a method and user equipment for mobile communication, which enable a transmission power of an initial transmission frame when a UE communicates with a base station on a PUSCH as much as possible. Accurate, even when the MCS selected by the UE is small, the transmission power of the UE can be improved, thereby reducing the error rate on the PUSCH; even when the MCS selected by the UE is high, the transmission power of the UE can be reduced, thereby reducing the power. Waste and interference with co-frequency neighbors.
  • a method for mobile communication includes: when a user equipment UE communicates with a base station on a physical uplink shared channel PUSCH,
  • the relevant power compensation value of the modulation coding mode MCS of the initial transmission frame is a first compensation value, so that the transmission power of the initial transmission frame when the UE performs communication on the PUSCH is less affected by the MCS;
  • the first compensation value is zero.
  • the first compensation value is:
  • BPRE represents the number of bits transmitted on each resource symbol
  • ⁇ represents the number of bits transmitted on each resource symbol on the initial frame when the UE communicates with the base station on the PUSCH;
  • ⁇ is equal to ⁇ where the power offset value of the control signaling relative to the data is indicated.
  • ⁇ ' is equal to 1; indicating the cell common parameter.
  • the method further includes:
  • data and/or signaling is transmitted to the base station through subframes other than the initial frame of the PUSCH.
  • the power specifically includes:
  • the transmit power of the subframe i of the UE when communicating on the PUSCH is:
  • PpuscH - ( min ⁇ io io gl0 ( (0) + Po_ P c (j + a , ( ) . PL , + (' ⁇ ) + (i) ⁇ [dBm .
  • C denotes a serving cell
  • ⁇ denotes UE Maximum transmit power value
  • ⁇ PUSCH Mi) ⁇ shows the transmission bandwidth allocated by the base station to the UE, that is, the number of resources; P 0 - ⁇ > represents the target power value, that is, the power value that the base station wants to receive the signal; ⁇ represents the downlink path loss; a represents the downlink path loss Compensation factor; W represents power adjustment state; ( i) power compensation value indicating modulation coding mode; and/or
  • the transmit power of the i-th subframe when the UE performs communication on the PUSCH is:
  • a user equipment includes: a setting unit, an obtaining unit, and a sending unit;
  • the setting unit is configured to: when the user equipment UE communicates with the base station on the physical uplink shared channel PUSCH, set a correlation power compensation value of the modulation coding mode MCS of the initial transmission frame to a first compensation value, so that the UE is in the PUSCH.
  • the transmitting power of the initial transmission frame when the communication is performed is less affected by the MCS;
  • the acquiring unit is configured to acquire, according to the first compensation value, the transmit power of the initial transmission frame when the UE performs communication on the PUSCH of the serving cell according to the first compensation value.
  • the sending unit is configured to transmit data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power.
  • the first compensation value is zero.
  • the first compensation value is:
  • BPRE represents the number of bits transmitted on each resource symbol
  • ⁇ represents the number of bits transmitted on each resource symbol on the initial frame when the UE communicates with the base station on the PUSCH
  • 15 is equal to, indicating the power offset value of the control signaling relative to the data.
  • ⁇ ' is equal to 1; indicating the cell shared parameter.
  • the setting unit is further configured to: when the UE communicates with the base station on the PUSCH, set the MCS of the subframe other than the initial transmission frame.
  • the relevant power compensation value is the first compensation Value
  • the acquiring unit is further configured to acquire, according to the first compensation value, a transmit power of a subframe other than the initial frame when the UE performs communication on the PUSCH of the serving cell, where the sending unit is further configured to Transmitting power, transmitting data and/or signaling to the base station by using a subframe other than the initial transmission frame of the PUSCH.
  • the acquiring unit acquires, according to the first compensation value, an initial frame and an initial frame when the UE performs communication on the PUSCH according to the first compensation value.
  • the transmit power of the subframe specifically includes:
  • the transmit power of the subframe i of the UE when communicating on the PUSCH is:
  • PpuscH - ( min ⁇ io io gl0 ( (0) + Po_ P c (j + a , ( ) . PL , + (' ⁇ ) + (i) ⁇ [dBm .
  • C denotes a serving cell
  • ⁇ denotes UE Maximum transmit power value
  • ⁇ PUSCH Mi) ⁇ shows the transmission bandwidth allocated by the base station to the UE, that is, the number of resources;
  • P 0 - ⁇ > represents the target power value, that is, the power value that the base station wants to receive the signal;
  • ⁇ represents the downlink path loss;
  • a represents the downlink path loss Compensation factor;
  • W represents power adjustment state;
  • ⁇ '('') represents the relevant power compensation value of the MCS
  • the transmit power of the i-th subframe when the UE performs communication on the PUSCH is:
  • the related power compensation value of the MCS of the initial transmission frame is set to a first compensation value. Acquiring a value of the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell; Rate, transmitting data and/or signaling to the base station through the initial transmission frame of the PUSCH.
  • the transmission power of the initial transmission frame is less affected by the MCS, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MCS selected by the UE is small.
  • the transmit power of the UE is increased, thereby reducing the bit error rate on the PUSCH. Even when the MCS selected by the UE is high, the transmit power of the UE can be reduced, thereby reducing power waste and interference to the same-frequency neighboring cell.
  • FIG. 1 is a schematic flowchart of a method for mobile communication according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of another method for mobile communication according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a user equipment according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.
  • Embodiment 1 The embodiment of the present invention provides a method for mobile communication. As shown in FIG. 1, the method includes:
  • the related power compensation value of the modulation and coding mode MCS of the initial transmission frame is set to a first compensation value, so that the UE initially communicates on the PUSCH.
  • the transmit power of the transmitted frame is affected by The impact of MCS is small.
  • the transmit power on the initial frame is not adjusted. Therefore, the transmit power of the UE in the initial frame may be low or high.
  • the transmit power of the UE in the initial transmission frame is affected by the MCS.
  • the base station selects a lower MCS for the UE, and the associated power compensation value of the MCS on the initial frame is lower, the bit error rate is higher.
  • the base station selects a higher MCS for the UE, and the associated power compensation value of the MCS on the initial transmission frame is higher, power waste and interference to the same frequency neighboring area are caused.
  • the relevant power compensation value of the MCS is the estimated power compensation value of the estimated MCS
  • the relevant power compensation value of the estimated MCS is:
  • BPRE represents the number of bits transmitted on each resource symbol; when control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, equal to P offse , indicating the power offset value of the control signaling relative to the data, in other cases, ⁇ ' is equal to 1; indicates the cell common parameters.
  • the definition of the associated power compensation value ⁇ ('') of the estimated MCS is the same, and all are the formula (1).
  • ⁇ (') of the sub-frame is determined by BPRE and ⁇ .
  • P the power offset value of the control signaling relative data; in other cases, it can be seen that ⁇ has no direct connection with the MCS Therefore, ⁇ (') ⁇ 1.
  • the value is determined by BPRE. Since each MCS corresponds to one BPRE, when the base station determines the MCS for the UE, the value of the BPRE is uniquely determined, and the value is determined.
  • the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is lower, less than zero, and the transmission power is low, the error rate is high.
  • the first compensation value is set to be greater than (; ) , the relevant power compensation value of the MCS may be increased to increase the transmission power of the UE, thereby reducing the error rate.
  • the related power compensation value of the MCS needs to be set, so that the transmit power of the UE in the initial transmission frame is less affected by the MCS.
  • the related power compensation value of the MCS of the initial transmission frame is set to the first compensation value.
  • the absolute value of the first compensation value may be set to be less than the absolute value of ⁇ ('').
  • the first compensation value may be set to zero.
  • the UE's transmit power on the initial frame is not affected by the MCS.
  • the UE may obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the UE's definition of the transmit power of the PUSCH.
  • the definition of the transmit power differs depending on whether PUSCH and PUCCH are transmitted simultaneously. In either case, the UE can obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the transmit power.
  • the UE When the transmit power of the initial transmission frame when the UE performs communication on the PUSCH is determined, the UE The determined transmit power transmits data information and/or signaling to the base station through the initial transmission frame of the PUSCH. The UE performs power adjustment on the subframe other than the initial transmission frame based on the transmission power, so that the transmission power is within a range suitable for reception by the base station.
  • An embodiment of the present invention provides a method for mobile communication.
  • the related power compensation value of the MCS of the initial transmission frame is set to a first compensation value; according to the first compensation value.
  • the transmission power of the initial transmission frame is less affected by the MCS, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MCS selected by the UE is small.
  • Embodiment 2 The embodiment of the present invention provides a method for mobile communication. As shown in FIG. 2, the method includes:
  • the modulation coding mode of the initial transmission frame is set.
  • the related power compensation value of the MCS is the first compensation value, and the first compensation value is:
  • BPRE represents the number of bits transmitted on each resource symbol
  • ⁇ represents the number of bits transmitted on each resource symbol on the initial transmission frame when the UE communicates with the base station on the PUSCH
  • 15 is equal to, indicating the power offset value of the control signaling relative to the data.
  • ⁇ ' is equal to 1; indicating the cell common parameter.
  • the value of P is not affected by the MCS.
  • the value of ⁇ ' ⁇ is determined by BPRE, that is, determined by MCS.
  • the base station In order to make the signal quality of all served UEs meet the requirements of the base station for the MCS demodulation, a lower MCS is selected.
  • ⁇ '('') it can be seen from the formula (2) that the selection of the MCS does not affect the value of the first compensation value.
  • the first compensation value has a small impact on the UE transmit power.
  • the base station For the manner in which the base station adaptively selects the MCS for all served UEs, when the channel quality is sufficiently poor, the base station selects a lower MCS.
  • the UE communicates with the base station on the PUSCH, for the first compensation value ⁇ ' ( 0 , it can be seen from equation (2), the selection of the MCS does not affect).
  • the base station selects a higher MCS.
  • the UE communicates with the base station on the PUSCH, for the first compensation value ⁇ '(''), it can be seen from the formula (2) that the selection of the MCS does not affect the value of ⁇ '('') . Therefore, the first compensation value has less influence on the UE transmit power.
  • the first compensation value is zero.
  • the UE After determining the first compensation value, the UE acquires the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the transmit power.
  • c denotes the serving cell
  • c c ( o denotes the maximum transmit power value of the UE
  • M denotes the transmission bandwidth allocated by the base station to the UE, ie the number of resources
  • ⁇ ⁇ ⁇ ⁇ ⁇ represents the target power value, ie the base station wishes to receive the signal
  • the power value; ⁇ indicates the downlink path loss; a indicates the downlink path loss compensation; (') indicates the power adjustment state; ⁇ '('') indicates the power compensation value of the modulation and coding mode, that is, the first compensation value.
  • the UE calculates the transmit power of the initial transmission frame according to the formula (5).
  • the transmit power of the UE is:
  • the UE calculates the transmit power of the initial transmission frame according to the formula (6).
  • the UE After the UE transmits the transmit power of the initial frame when the PUSCH performs communication, the UE transmits data and/or signaling to the base station through the initial frame of the PUSCH by using the determined transmit power.
  • the UE Transmitting, by the UE, the initial transmission frame of the PUSCH to the After the base station transmits data and/or signaling, the UE performs power adjustment based on the transmit power, so that the transmit power of the subframe other than the initial transmit frame is within a range suitable for reception by the base station.
  • the UE sets a related power compensation value of the MCS of the subframe other than the initial frame to the first compensation value.
  • An embodiment of the present invention provides a method for mobile communication.
  • the related power compensation value of the MCS of the initial transmission frame is set to a first compensation value; according to the first compensation value.
  • the transmission power of the initial transmission frame is less affected by the MCS, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MCS selected by the UE is small.
  • the transmission power of the UE is increased, thereby reducing the error rate on the PUSCH; and even when the MCS selected by the UE is high, the transmission power of the UE can be reduced, thereby reducing power waste and interference to the same-frequency neighboring area; Furthermore, when the transmission power is adjusted on a subframe other than the initial frame, the transmission power can be adjusted to a suitable value more quickly.
  • Embodiment 3 The embodiment of the present invention provides a user equipment.
  • the user equipment 30 includes: a setting unit 31, an obtaining unit 32, and a sending unit 33.
  • the setting unit 31 is configured to: when the UE communicates with the base station on the physical uplink shared channel PUSCH, set a correlation power compensation value of the modulation coding mode MCS of the initial transmission frame to a first compensation value, so that the UE performs on the PUSCH.
  • the transmission power of the initial transmission frame during communication is less affected by the MCS.
  • the transmit power on the initial frame is not adjusted. Therefore, the transmit power of the UE in the initial frame may be low or high.
  • the transmit power of the UE in the initial transmission frame is affected by the MCS.
  • the MCS selected by the base station for the UE is low, and the related power compensation value of the MCS on the initial transmission frame is low, the error rate is high.
  • the MCS selected by the base station for the UE is high, and the related power compensation value of the MCS on the initial transmission frame is too high, power waste and interference to the same frequency neighboring area may be caused.
  • the relevant power compensation value of the MCS is the estimated power compensation value of the estimated MCS
  • the related power compensation value of the estimated MCS is:
  • BPRE represents the number of bits transmitted on each resource symbol; when control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, equal to P offse , indicating the power offset value of the control signaling relative to the data, in other cases, ⁇ ' is equal to 1; indicates the cell common parameters.
  • the definition of the associated power compensation value ⁇ ('') of the estimated MCS is the same, and all are the formula (1).
  • the value of ⁇ (') of the sub-frame is determined by BPRE and ⁇ .
  • ⁇ when control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, it is equal to ⁇ indicating the power offset value of the control signaling relative data; otherwise, it is equal to 1.
  • ⁇ is not directly related to MCS, therefore, the value of ⁇ (') is determined by BPRE. Since each MCS corresponds to one BPRE, when the base station determines the MCS for the UE, the value of the BPRE is uniquely determined, and the value is determined.
  • the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is lower, less than zero, and the transmission power is low, the error rate is high. At this time, if the setting unit 31 sets the first compensation value to be greater than ⁇ (''), the related power compensation value of the MCS may be increased to increase the transmission power of the UE, thereby reducing the error rate.
  • the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is higher, ⁇ ⁇ ) is greater than zero, and the transmission power is high, the power is generated. Waste and interference with co-frequency neighbors.
  • the setting unit 31 sets the first compensation value to be smaller than ⁇ (''), the related power compensation value of the MCS may be reduced, the transmission power of the UE is reduced, and the waste of power and interference to the same frequency neighboring area are reduced. .
  • the setting unit 31 needs to set the relevant power compensation value of the MCS, so that the UE's transmit power in the initial transmission frame is less affected by the MCS.
  • the setting unit 31 sets the relevant power compensation value of the MCS of the initial frame to be the first compensation value.
  • the setting unit 31 may set the absolute value of the first compensation value to be less than ⁇ (''). Absolute value.
  • the setting unit 31 is further configured to set the first compensation value to be zero.
  • the UE's transmit power on the initial frame is not affected by the MCS.
  • the acquiring unit 32 is configured to acquire, according to the first compensation value, a transmit power of an initial frame when the UE performs communication on a PUSCH of a serving cell. After the first compensation value is determined, the acquiring unit 32 may obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the UE's uplink transmit power on the PUSCH. The definition of the transmit power differs depending on whether PUSCH and PUCCH are transmitted simultaneously. In either case, the obtaining unit 32 can obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the transmit power.
  • the UE's transmit power is defined as:
  • ⁇ PUSCH Mi) ⁇ shows the transmission bandwidth allocated by the base station to the UE, that is, the number of resources;
  • P 0 — ⁇ Indicates the target power value, that is, the power value that the base station wants to receive the signal; indicates the downlink path loss; ° ⁇ indicates the downlink path loss compensation; W indicates the power adjustment state;
  • ⁇ '('') indicates the power compensation value of the modulation and coding mode, that is, the first A compensation value.
  • the transmit power of the UE is:
  • the sending unit 33 is configured to transmit data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power.
  • the sending unit 33 After the UE transmits the transmit power of the initial frame when the PUSCH performs communication, the sending unit 33 transmits the data information and/or signaling to the base station through the initial frame of the PUSCH by using the determined transmit power.
  • the setting unit 31 is further configured to set the first compensation value: , Equation (2) where BPRE represents the number of bits transmitted on each resource symbol; ⁇ represents the number of bits transmitted on each resource symbol on the initial frame when the UE communicates with the base station on the PUSCH; When transmitting through the PUSCH and no data is transmitted on the PUSCH, 15 is equal thereto, indicating the power offset value of the control signaling relative to the data. In other cases, ⁇ ' is equal to 1; indicating the cell common parameter.
  • the value of P is not affected by the MCS.
  • the value of ⁇ ' ⁇ is determined by BPRE, that is, determined by MCS.
  • the base station needs to satisfy the base station to demodulate the MCS in order to make the signal quality of all served UEs Ask for the lower MCS.
  • the first compensation value ⁇ '('') it can be seen from the formula (2) that the selection of the MCS does not affect the value of the first compensation value.
  • the first compensation value has a small impact on the UE transmit power.
  • the base station For the manner in which the base station adaptively selects the MCS for all served UEs, when the channel quality is sufficiently poor, the base station selects a lower MCS.
  • the UE communicates with the base station on the PUSCH, for the first compensation value ⁇ ' ( 0 , it can be seen from equation (2), the selection of the MCS does not affect).
  • the base station selects a higher MCS.
  • the UE communicates with the base station on the PUSCH, for the first compensation value ⁇ '(''), it can be seen from the formula (2) that the selection of the MCS does not affect the value of ⁇ '('') . Therefore, the first compensation value has less influence on the UE transmit power.
  • the obtaining unit 32 calculates the transmission power of the initial transmission frame according to the formula (5).
  • the transmitting unit 33 transmits the data and/or signaling to the base station on the initial frame of the PUSCH by using the transmit power. When the PUSCH and the PUCCH are simultaneously transmitted, there may be control signaling and no data is transmitted on the PUSCH.
  • the UE calculates the transmission power of the initial transmission frame according to the formula (6).
  • the transmitting unit 3 3 transmits the data and/or signaling on the initial frame of the PUSCH by using the transmit power.
  • the UE performs power adjustment based on the transmit power, so that The transmit power of the subframes other than the initial transmission frame is within the range that the base station is suitable for reception.
  • the setting unit 31 is further configured to: when the UE communicates with the base station on the PUSCH, set a related power compensation value of the MCS of the subframe other than the initial frame to the first compensation value.
  • the acquiring unit 32 is further configured to acquire, according to the first compensation value, a transmit power of a subframe other than the initial frame when the UE performs communication on the PUSCH of the serving cell.
  • the sending unit 3 3 is further configured to transmit, by using the transmit power, data and/or signaling to the base station by using a subframe other than the initial frame of the PUSCH.
  • the embodiment of the present invention provides a user equipment, where the setting unit sets the relevant power compensation value of the MC S of the initial frame to be the first compensation value when the UE communicates with the base station on the PUSCH;
  • the first compensation value is used to acquire the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell;
  • the sending unit transmits the data to the base station by using the initial transmit frame of the PUSCH by using the transmit power. / or signaling.
  • the transmission power of the initial transmission frame is less affected by the MC S, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MC S selected by the UE is small.
  • the transmission power of the UE can be improved, thereby reducing the bit error rate on the PUS CH; and even when the MC S selected by the UE is high, the transmission power of the UE can be reduced, thereby reducing power waste and co-frequency neighboring. Interference of the zone; Furthermore, when the transmit power is adjusted on a subframe other than the initial frame, the transmit power can be adjusted to a suitable value more quickly.
  • An embodiment of the present invention provides a user equipment UE.
  • the user equipment 40 includes: a processor 41 and a transmitter 42.
  • the processor 41 is configured to: when the UE communicates with the base station on the physical uplink shared channel (PUSCH), set the relevant power compensation value of the modulation and coding mode MCS of the initial transmission frame to a first compensation value, so that the UE performs on the PUSCH.
  • the transmission power of the initial transmission frame during communication is less affected by the MCS.
  • the transmit power on the initial frame is not adjusted. Therefore, the transmit power of the UE in the initial frame may be low or high.
  • the transmit power of the UE in the initial transmission frame is affected by the MCS.
  • the base station selects a lower MCS for the UE, and the associated power compensation value of the MCS on the initial frame is lower, the bit error rate is higher.
  • the base station selects a higher MCS for the UE, and the associated power compensation value of the MCS on the initial transmission frame is higher, power waste and interference to the same frequency neighboring area are caused.
  • the relevant power compensation value of the MCS is the estimated power compensation value of the estimated MCS
  • the relevant power compensation value of the estimated MCS is:
  • BPRE represents the number of bits transmitted on each resource symbol; when control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, equal to P offse , indicating the power offset value of the control signaling relative to the data, in other cases, ⁇ ' is equal to 1; indicates the cell common parameters.
  • the definition of the associated power compensation value ⁇ ('') of the estimated MCS is the same, and all are the formula (1).
  • the value is determined by BPRE. Since each MCS corresponds to one BPRE, when the base station determines the MCS for the UE After that, the value of BPRE is uniquely determined, and then the value is determined.
  • the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is lower, less than zero, and the transmission power is low, the error rate is high.
  • the processor 41 sets the first compensation value to be greater than '), the related power compensation value of the MCS may be increased to increase the transmission power of the UE, thereby reducing the error rate.
  • the processor 41 sets the first compensation value to be smaller than ⁇ (''), the related power compensation value of the MCS may be reduced, and the UE's transmit power is reduced, thereby reducing power waste and interference to the same frequency neighboring region. .
  • the processor 41 needs to set the relevant power compensation value of the MCS, so that the UE's transmit power in the initial transmission frame is less affected by the MCS.
  • the processor 41 sets the relevant power compensation value of the MCS of the initial transmission frame to a first compensation value.
  • the processor 41 may set the absolute value of the first compensation value to be less than ⁇ (''). Absolute value.
  • the processor 41 is further configured to set the first compensation value to be zero. When the first compensation value is zero, the UE's transmit power on the initial frame is not affected by the MCS.
  • the processor 41 is further configured to acquire, according to the first compensation value, a transmit power of an initial frame when the UE communicates in a PUSCH of a serving cell. After the first compensation value is determined, the processor 41 may obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the UE's uplink transmit power on the PUSCH.
  • the definition of the transmission power differs depending on whether the PUSCH and the PUCCH are simultaneously transmitted. In either case, the processor 41 can obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the transmit power.
  • the UE's transmit power is defined as:
  • c denotes a serving cell
  • ⁇ denotes a maximum transmit power value of the UE
  • ⁇ PUSCH Mi) ⁇ indicates the transmission bandwidth allocated by the base station to the UE, that is, the number of resources; P 0 - ⁇ > indicates the target power value, that is, the power value that the base station wants to receive the signal; ⁇ indicates the downlink path loss; a indicates the downlink path loss Compensation; W represents the power adjustment state; ⁇ ⁇ represents the power compensation value of the modulation and coding mode, that is, the first compensation value.
  • the transmit power of the UE is:
  • PCM ⁇ represents the maximum transmit power value of the UE
  • PPUCCH 1 represents the transmit power value of the PUCCH
  • M PUSCH,c) P 0_PUSCH, c( j), PL c, « C '), f )
  • ⁇ The definition of TF is the same as when PUSCH is not transmitted simultaneously with PUCCH.
  • the transmitter 42 is configured to transmit data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power.
  • the transmitter 42 transmits the data information and/or signaling to the base station through the initial frame of the PUSCH with the determined transmit power.
  • the processor 41 is further configured to set the first compensation value
  • the value of P is not affected by the MCS.
  • the value of ⁇ ' ⁇ is determined by BPRE, that is, determined by MCS.
  • the base station selects a lower MCS in order to make the signal quality of all served UEs meet the requirements of the base station for the MCS demodulation.
  • the base station For the manner in which the base station adaptively selects the MCS for all served UEs, when the channel quality is sufficiently poor, the base station selects a lower MCS.
  • the UE communicates with the base station on the PUSCH, for the first compensation value ⁇ ' ( 0 , it can be seen from equation (2), the selection of the MCS does not affect).
  • the base station selects a higher MCS.
  • the UE communicates with the base station on the PUSCH, for the first compensation value ⁇ '(''), it can be seen from the formula (2) that the selection of the MCS does not affect the value of ⁇ '('') . Therefore, the first compensation value has less influence on the UE transmit power.
  • the processor 41 calculates the transmit power of the initial transmission frame according to the formula (5).
  • the transmitter 42 transmits the data and/or signaling to the base station on the initial frame of the PUSCH at the transmit power.
  • the first compensation value is: ⁇ ⁇ .
  • the UE calculates the transmission power of the initial transmission frame according to the formula (6).
  • the transmitter 42 transmits the data and/or signaling to the base station on the initial frame of the PUSCH at the transmit power.
  • the UE After the transmitter 42 transmits data and/or signaling to the base station through the initial transmission frame of the PUSCH by using the transmit power, the UE performs power adjustment based on the transmit power, so that The transmit power of the subframes other than the initial transmission frame is within the range that the base station is suitable for reception.
  • the processor 41 is further configured to: when the UE communicates with the base station on the PUSCH, set a related power compensation value of the MCS of the subframe other than the initial frame to the first compensation value.
  • the processor 41 is further configured to acquire, according to the first compensation value, a transmit power of a subframe other than the initial frame when the UE performs communication on the PUSCH of the serving cell.
  • the transmitter 42 is further configured to transmit data and/or signaling to the base station by using a subframe other than the initial transmission frame of the PUSCH by using the transmit power.
  • An embodiment of the present invention provides a user equipment, where the UE sets a related power compensation value of an MCS of an initial transmission frame to a first compensation value when the UE communicates with a base station on a PUSCH; And acquiring, by the first compensation value, a transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell; the transmitter transmitting, by using the transmit power, the data to the base station by using the initial frame of the PUSCH Or signaling.
  • the transmission power of the initial transmission frame is less affected by the MCS, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MCS selected by the UE is small.
  • the transmit power of the UE thereby reducing the bit error rate on the PUSCH; and even when the MCS selected by the UE is high, it can be reduced.
  • the transmission power of the small UE thereby reducing power waste and interference to the same frequency neighboring area; further, when the transmission power is adjusted on the subframe other than the initial transmission frame, the transmission power can be adjusted to a suitable speed more quickly. Value.
  • the foregoing method includes the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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

Abstract

L'invention concerne un procédé et un équipement d'utilisateur (UE) pour la communication mobile, qui permettent d'établir d'une manière aussi précise que possible la puissance d'émission d'une trame d'émission initiale lorsque l'UE est en train de communiquer avec une station de base sur un canal partagé de liaison montante physique (PUSCH), de sorte que même si l'UE sélectionne un schéma de modulation et de codage (MCS) réduit, la puissance d'émission de l'UE peut toujours être augmentée, ce qui réduit le taux d'erreurs binaires sur le PUSCH, et si l'UE sélectionne un MCS augmenté, la puissance d'émission de l'UE peut toujours être diminuée, ce qui réduit le gaspillage d'énergie et les interférences subies par une cellule adjacente de même fréquence. Le procédé comprend les étapes suivantes : lorsque l'UE est en train de communiquer avec la station de base sur le PUSCH, configuration d'une valeur de compensation de puissance liée au MCS de la trame d'émission initiale en tant que première valeur de compensation; acquisition, en fonction de la première valeur de compensation, de la puissance d'émission de la trame d'émission initiale lorsque l'UE est en train de communiquer sur le PUSCH d'une cellule serveuse; et, à la puissance d'émission, envoi de données et/ou d'une signalisation à la station de base par la trame d'émission initiale du PUSCH. La présente invention peut être appliquée au domaine des communications.
PCT/CN2012/087334 2012-12-24 2012-12-24 Procédé et équipement d'utilisateur pour la communication mobile WO2014100952A1 (fr)

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CN201280077059.XA CN104798407B (zh) 2012-12-24 2012-12-24 一种移动通信的方法和用户设备

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CN111886907A (zh) * 2018-03-23 2020-11-03 高通股份有限公司 用于无线通信中的上行链路控制信息传输的功率控制技术
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