WO2013016855A1 - 一种功率控制方法和终端设备 - Google Patents

一种功率控制方法和终端设备 Download PDF

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Publication number
WO2013016855A1
WO2013016855A1 PCT/CN2011/077789 CN2011077789W WO2013016855A1 WO 2013016855 A1 WO2013016855 A1 WO 2013016855A1 CN 2011077789 W CN2011077789 W CN 2011077789W WO 2013016855 A1 WO2013016855 A1 WO 2013016855A1
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WO
WIPO (PCT)
Prior art keywords
signal
terminal device
priority
transmission power
power
Prior art date
Application number
PCT/CN2011/077789
Other languages
English (en)
French (fr)
Inventor
徐海博
王轶
Original Assignee
富士通株式会社
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
Priority to CN201180069494.3A priority Critical patent/CN103444234B/zh
Priority to EP16163599.0A priority patent/EP3060009B1/en
Priority to KR1020167034099A priority patent/KR101748107B1/ko
Priority to CN201610771290.9A priority patent/CN106376071B/zh
Priority to KR1020147004057A priority patent/KR101685546B1/ko
Priority to PCT/CN2011/077789 priority patent/WO2013016855A1/zh
Priority to EP11870371.9A priority patent/EP2739094B1/en
Priority to KR1020177015704A priority patent/KR101758592B1/ko
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to JP2014521905A priority patent/JP5915741B2/ja
Publication of WO2013016855A1 publication Critical patent/WO2013016855A1/zh
Priority to US14/162,034 priority patent/US9307503B2/en
Priority to US15/044,427 priority patent/US9532321B2/en
Priority to US15/387,126 priority patent/US10098077B2/en
Priority to US16/124,985 priority patent/US10638433B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367Power values between minimum and maximum limits, e.g. dynamic range
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/34TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/146Uplink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/28TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/281TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account user or data type priority
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/32TPC of broadcast or control channels
    • H04W52/325Power control of control or pilot channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/34TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/50TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular, to a power control method and a terminal device in a case where a terminal power is limited. Background technique
  • a physical uplink share channel (PUSCH), a physical uplink control channel (PUCCH), and an uplink sounding reference signal (Sounding reference) are transmitted to a terminal device.
  • the power control method for signal, SRS) and physical random access channel (PRACH) is defined (3GPP TS 36.213 V 8.6.0). among them:
  • the power control formula of PUSCH is:
  • PpuscH ('') min ⁇ 3 ⁇ 4Ax 01og 10 (M PUSCH ( )) + P 0 _PUSCH ( ) + ⁇ PL + ⁇ ⁇ ( ) + ( ) ⁇ [dBm] (1);
  • the power control formula of PUCCH is:
  • the power control formula of SRS is:
  • PSRS ('.) min ⁇ P MAX , /3 ⁇ 4 RS O FFSET + 101og 10 (M SRS ) + P 0 _PUSCH (i) + - PL + ( ) ⁇ [dBm] (3);
  • the power control formula of PRACH is:
  • the same terminal device does not simultaneously transmit PUSCH, PUCCH, and PRACH channels in the same subframe. At the same time, the same terminal device does not simultaneously transmit SRS and PUSCH, SRS and PUCCH, and SRS and PRACH in the same Orthogonal Frequency Division Multiplexing (OFDM) symbol.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the terminal device occurs when the transmission power of the uplink signal exceeds the maximum configured output power (PCMAX: Configured Maximum Output Power) of the terminal device.
  • PCMAX Configured Maximum Output Power
  • LTE-A LTE-Advanced
  • LTE-A LTE-Advanced
  • the transmission power of the PUSCH of the terminal equipment on the serving cell c in the i-th subframe is:
  • the transmission power of the PUCCH of the terminal device in the i-th subframe on the serving cell c is:
  • the SRS transmission power of the terminal device on the serving cell c in the i-th subframe is:
  • the method of controlling the transmission power of the PRACH is the same as that of LTE, and the description thereof is omitted here.
  • the terminal device when the terminal device is configured with multiple serving cells, it will appear in the same subframe, and multiple PUSCHs are simultaneously transmitted on different serving cells (as shown in FIG. 1(a)) or simultaneously. And PUCCH (as shown in Figure l(b)). On the other hand, due to the enhancement of the terminal capability, the terminal device can simultaneously transmit PUSCH and PUCCH in the same subframe on the primary serving cell (Fig. l(c)).
  • the sum of the transmission power of the multiple PUSCHs is greater than the maximum configured output power of the terminal device, or The sum of the transmission power of the PUSCH and the PUCCH is greater than the maximum output power of the terminal device.
  • a power control method in a case where the transmission power of the terminal device is limited is defined in the standardization of LTE-A.
  • the terminal device When only a plurality of PUSCHs without an uplink control signal (UCI) need to be simultaneously transmitted, the terminal device first calculates the transmission power required for the PUSCH on each serving cell according to formula (5). If the total transmit power obtained at this time exceeds the maximum output power of the terminal device, the terminal device reduces the transmit power by equal share on each PUSCH until the total transmit power is guaranteed to be less than or equal to the maximum output power of the terminal device.
  • UCI uplink control signal
  • the terminal device When the PUSCH and the PUCCH without the UCI need to be simultaneously transmitted, the terminal device first calculates the transmission power required by the PUSCH on the serving cell transmitted only by the PUSCH according to formula (5), and calculates according to formula (6) and formula (7). The transmission power required by the PUSCH on the serving cell of the PUSCH and PUCCH transmission and the transmission power required by the PUCCH. If the total transmission power obtained at this time exceeds the maximum output power of the terminal device, the terminal device first guarantees that the transmission power of the PUCCH is satisfied, and then reduces the transmission power on the PUSCH without each UCI until the total transmission is guaranteed. The power is less than or equal to the maximum output power of the terminal device.
  • the terminal device When the PUSCH without UCI and the PUSCH with UCI need to be simultaneously transmitted, the terminal device first calculates the transmission power required for the PUSCH on each serving cell according to formula (5). If the total transmit power obtained at this time exceeds the maximum output power of the terminal device, the terminal device first guarantees that the transmit power of the PUSCH with UCI is satisfied, and then reduces the transmit power with an equal share on each PUSCH without UCI until Ensure that the total transmit power is less than or equal to the maximum output power of the terminal device.
  • the terminal device When the PUCCH, the PUSCH without the UCI, and the PUSCH with the UCI need to be simultaneously transmitted, the terminal device first calculates the transmission power required by the PUSCH on the serving cell transmitted only by the PUSCH according to formula (5), according to formula (6) and the formula. (7) Calculate the transmission power required by the PUSCH on the serving cell with both PUSCH and PUCCH transmission and the transmission power required by the PUCCH.
  • the terminal device first guarantees that the transmit power of the PUCCH is satisfied, and secondly ensures that the transmit power of the PUSCH with UCI is satisfied, and then each PUSCH without UCI The equal amount of transmission power is reduced until the total transmission power is guaranteed to be less than or equal to the maximum output power of the terminal device.
  • the terminal device uses the same uplink timing advance value when all serving cells send uplink signals.
  • the initial value of the timing advance is obtained by making random access on the primary serving cell. Therefore, in Rel-10, the base station configures the PRACH channel only for the terminal equipment on its Primary Serving Cell (PCell).
  • PCell Primary Serving Cell
  • the terminal device will only send the PRACH signal on the PCell.
  • the terminal device does not send other uplink signals, including PUSCH, PUCCH, and SRS, on the PCell or other secondary serving cells (Secondary Serving Cell).
  • the inventors have found that in Rel-11, since the uplink needs to support aggregation of carriers from different sites and carrier aggregation techniques between frequency bands, it is impossible to ensure that all SCells have the same uplink signal time advance as PCell. the amount.
  • the terminal equipment needs to perform random access on the SCell. Therefore, in Rel-11, the base station needs to configure the PRACH channel for the terminal device on some SCells. The terminal device also needs to send a PRACH signal on the SCell.
  • the terminal device needs to simultaneously transmit multiple PUSCHs in the same subframe or the terminal device needs to simultaneously transmit the PUSCH and the PUCCH, and the terminal device may also need to simultaneously transmit the PUSCH and the PRACH, the PUCCH and the PRACH and SRS and PRACH. Therefore, the following three scenarios may also cause the sum of the transmission power of the terminal device to be greater than the maximum configured output power of the terminal device.
  • Scenario 1 (shown in Figure 2): The PUXCH (PUXCH indicates PUSCH or PUCCH) and the combined power of the PR PRACH sent by the terminal device on the PCell and the SCell are greater than the maximum configured output power of the terminal device.
  • PUXCH indicates PUSCH or PUCCH
  • Scenario 2 (as shown in Figure 3): The terminal device needs to send SRS and PC9 and SCell respectively.
  • the sum of the transmission power of the PRACH is greater than the maximum configured output power of the terminal equipment.
  • Scenario 3 (as shown in Figure 4): The terminal device needs to send the sum of the transmit power of PUXSH and PRACH on the PCell and the SCell, and the sum of the transmit power of the SRS and the PRACH are greater than the maximum configured output power of the terminal device.
  • the sum of the transmission power of the PUSCH and the PRACH that the terminal device needs to transmit at the same time is greater than the maximum configured output power of the terminal device; or, in the same subframe, the terminal device needs to simultaneously transmit the PUCCH and the PRACH.
  • the sum of the transmit power is greater than the maximum configured output power of the terminal device; or, in the same OFDM symbol, when the sum of the transmit power of the SRS and the PRACH that the terminal device needs to simultaneously transmit is greater than the maximum configured output power of the terminal device, how is the terminal device Uplink transmission of signals for power control is an urgent problem to be solved.
  • the purpose of the embodiments of the present invention is to provide a power control method and a terminal device in a case where the terminal power is limited, so as to solve the problem that when the terminal device needs to simultaneously transmit the SRS and the PRACH in the same OFDM symbol, the sum of the transmission power is greater than that of the terminal device.
  • the maximum output power is configured, or the terminal device needs to simultaneously transmit the PRACH and other physical uplink channel signals in the same subframe, the sum of the transmission power is greater than the maximum configured output power of the terminal device.
  • a power control method comprising: transmitting, by a terminal device, a physical random access channel PRACH signal on a secondary serving cell within the same orthogonal frequency division multiplexing OFDM symbol
  • the terminal device discards the SRS signal on the other serving cell, or cancels the same OFDM symbol on the secondary serving cell and the SRS signal on the other serving cell.
  • the symbol of the PRACH signal within.
  • the terminal device when the terminal device needs to send the PRACH signal on one secondary serving cell in the same subframe, and the physical uplink channel signal is sent on the other serving cell, if the total transmitting power of the terminal device is greater than that of the terminal device The maximum output power, the terminal device adjusts the transmit power of the PRACH signal and/or the physical uplink channel signal according to a preset priority of the PRACH signal and the physical uplink channel signal, until the adjusted total The transmit power is less than or equal to the maximum output power of the terminal device.
  • a power control method comprising: when a terminal device needs to send a physical random access channel on a secondary serving cell within the same orthogonal frequency division multiplexing OFDM symbol a PRACH signal, when the uplink sounding reference signal SRS is transmitted on the other serving cell, if the total transmission power of the terminal device is greater than the maximum output power of the terminal device, the terminal device according to the PRACH signal and the SRS signal Priority, adjusting the transmission power of the PRACH signal and the SRS signal.
  • the terminal device when the terminal device needs to send the PRACH signal on one secondary serving cell in the same subframe, and the physical uplink channel signal is sent on the other serving cell, if the total transmitting power of the terminal device is greater than the maximum output power of the terminal device, The terminal device adjusts the transmit power of the PRACH signal according to the preset priority of the PRACH signal and the physical uplink channel signal, or adjusts the transmit power of the PRACH signal and the physical uplink channel signal until The adjusted total transmission power is less than or equal to the maximum output power of the terminal device.
  • a terminal device is further provided, where the terminal device includes: a first determining unit, configured to determine whether the terminal device needs to send a physical random access channel PRACH signal on one secondary serving cell in the same orthogonal frequency division multiplexing OFDM symbol, and send an uplink sounding reference signal SRS on other serving cells;
  • a first processing unit when the first determining unit determines to be YES, discarding the SRS signal on the other serving cell, or deleting the SRS signal on the secondary serving cell and the other serving cell The symbol of the PRACH signal within the OFDM symbol.
  • the terminal device further includes:
  • a second determining unit configured to determine whether the terminal device needs to send a PRACH signal on one secondary serving cell in the same subframe, and send a physical uplink channel signal on other serving cells;
  • a second processing unit when the second determining unit determines to be YES, when the total transmit power is greater than the maximum output power, adjusting according to a preset priority of the PRACH signal and the physical uplink channel signal The transmit power of the PRACH signal and/or the physical uplink channel signal until the adjusted total transmit power is less than or equal to the maximum output power of the terminal device.
  • a terminal device includes: a first determining unit, determining whether the terminal device needs to be in the same OFDM symbol Sending a physical random access channel PRACH signal on the secondary serving cell, and transmitting an uplink sounding reference signal SRS on other serving cells;
  • a first determining unit when the first determining unit determines to be YES, determining whether the total sending power is greater than a maximum output power of the terminal device;
  • a first processing unit that adjusts a transmission power of the PRACH signal and the SRS signal according to a priority of the PRACH signal and the SRS signal when the first determining unit determines to be YES.
  • the terminal device further includes:
  • a second determining unit configured to determine whether the terminal device needs to send a PRACH signal on one secondary serving cell in the same subframe, and send a physical uplink channel signal on other serving cells;
  • a second determining unit when the second determining unit determines to be YES, determining whether the total sending power is greater than a maximum output power of the terminal device;
  • a second processing unit configured to adjust a transmit power of the PRACH signal according to a preset priority of the PRACH signal and the physical uplink channel signal when the second determining unit determines to be YES, or adjust the Transmitting the transmit power of the PRACH signal and the physical uplink channel signal until the adjusted total transmit power The rate is less than or equal to the maximum output power of the terminal device.
  • the beneficial effects of the embodiments of the present invention are as follows: Solving the newly appearing scenario in the Rel-11, for example, when the terminal device simultaneously transmits the PRACH and the SRS in the same OFDM symbol, the total transmission power caused by the problem is greater than the maximum configured output power. It is also possible to simultaneously solve the problem that when the terminal device simultaneously transmits the PRACH and the physical uplink channel signal in the same subframe, the total transmission power is greater than the maximum configured output power.
  • Figure la is a schematic diagram of a terminal device transmitting multiple PUSCHs simultaneously on different cells in the same subframe in Rel-10 of the LTE-A system;
  • Figure lb is a schematic diagram of a PUSCH and a PUCCH transmitted by a terminal device in different subframes in the same subframe in Rel-10 of the LTE-A system;
  • Figure lc is a schematic diagram of the terminal device transmitting the PUSCH and the PUCCH simultaneously on the primary serving cell in the same subframe in the Rel-10 of the LTE-A system;
  • 2 is a schematic diagram of a terminal device simultaneously transmitting a PUXCH and a PRACH on different cells in a Rel-11 of an LTE-A system
  • 3 is a schematic diagram of a terminal device simultaneously transmitting an SRS and a PRACH on different cells in a Rel-11 of an LTE-A system
  • FIG. 4 is a schematic diagram of a terminal device simultaneously transmitting PUXCH, SRS, and PRACH on different cells in Rel-11 of the LTE-A system;
  • FIG. 5 is a flowchart of a power control method according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a power control method according to another embodiment of the present invention based on the embodiment of FIG. 5;
  • FIG. 7a to FIG. 7c are flowcharts of the method of step 602 in the embodiment of FIG.
  • FIG. 8 is a flowchart of a power control method according to another embodiment of the present invention.
  • FIG. 9 is a flowchart of a power control method according to another embodiment of the present invention based on the embodiment of FIG. 8.
  • FIG. 10a to FIG. 10c are flowcharts of the method of step 902 in the embodiment of FIG.
  • FIG. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a terminal device according to another embodiment of the present invention. detailed description
  • the embodiment of the invention provides a power control method for a terminal device, as described in Embodiment 1 below.
  • Example 1
  • FIG. 5 is a flowchart of a power control method according to an embodiment of the present invention. Referring to FIG. 5, the method includes:
  • Step 501 Determine whether the terminal device needs to send a physical random access channel (PRACH) signal on one secondary serving cell within the same orthogonal frequency division multiplexing (OFDM) symbol, and send an uplink sounding reference signal (SRS) on other serving cells. );
  • PRACH physical random access channel
  • OFDM orthogonal frequency division multiplexing
  • SRS uplink sounding reference signal
  • the other serving cell may be a primary serving cell (PCell), or may be a secondary serving cell (SCell) other than the secondary serving cell.
  • PCell primary serving cell
  • SCell secondary serving cell
  • the SRS signal may be a periodic SRS signal or an aperiodic SRS signal.
  • Step 502 When it is determined that the terminal device needs to send the PRACH signal on one secondary serving cell in the same OFDM symbol, and the SRS signal is sent on the other serving cell, the terminal device only sends the PRACH signal or only sends in the OFDM symbol.
  • the SRS signal If the terminal device only sends the PRACH signal in the OFDM symbol, the terminal device may drop the SRS signal on the other serving cell, that is, ensure that the PRACH signal needs to be sent simultaneously on different serving cells in the same OFDM symbol. When the SRS signal is used, only the PRACH signal is transmitted.
  • the terminal device transmits only the SRS signal in the OFDM symbol
  • the terminal device punctures the symbol of the PRACH signal in the same OFDM symbol on the secondary serving cell and the SRS signal on the other serving cell. That is, when the PRACH signal and the SRS signal need to be simultaneously transmitted on different serving cells in the same OFDM symbol, only the SRS signal is transmitted.
  • the terminal device when it is required to simultaneously transmit the PRACH signal and the SRS signal on different serving cells in the same OFDM symbol, it is selected to transmit only the SRS signal or only the PRACH signal, thereby reducing the transmission power of the terminal device, and solving the problem.
  • the terminal device In the same OFDM symbol, the terminal device needs to simultaneously transmit the SRS signal and the PRACH signal, which may cause the sum of the transmission power to be greater than the maximum configured output power.
  • the embodiment of the invention further provides a power control method for the terminal device, as described in Embodiment 2 below.
  • the method is based on the method of Embodiment 1, when determining that the terminal device needs to send a PRACH signal on one secondary serving cell in the same subframe, and transmitting a physical uplink channel signal on other serving cells, the power control process of the terminal device
  • the same contents as those of the first embodiment are omitted here.
  • FIG. 6 is a flowchart of a power control method according to an embodiment of the present invention. Referring to FIG. 6, the method includes:
  • Step 601 When the terminal device needs to send the physical random access channel PRACH signal on one secondary serving cell in the same orthogonal frequency division multiplexing OFDM symbol, and send the uplink sounding reference signal SRS on other serving cells, the terminal device is in the Transmitting only the PRACH signal or only transmitting the SRS signal in the OFDM symbol;
  • the processing of the step 601 is the same as the processing of the method of the first embodiment, and is omitted here.
  • Step 602 When the terminal device needs to send the PRACH signal on one secondary serving cell in the same subframe, and send the physical uplink channel signal on other serving cells, if the total transmission power of the terminal device obtained by the calculation is obtained (that is, the PRACH is sent) The sum of the transmission power of the signal and the transmission power of the physical uplink channel signal is greater than the maximum output power of the terminal device, and the terminal device adjusts the priority according to the preset priority of the PRACH signal and the physical uplink channel signal. Transmitting the transmission power of the PRACH signal and/or the physical uplink channel signal until the adjusted total transmission power is less than or equal to the maximum output power of the terminal device Rate.
  • the physical uplink channel signal that may be sent on the other serving cell is any combination of the following signals: a physical uplink control channel PUCCH signal, a physical uplink shared channel PUSCH signal with UCI, and a physical uplink shared channel PUSCH signal without UCI. .
  • the other serving cells here are different according to the type of the physical uplink channel signal, for example, for the PUSCH signal, the other services here may be smaller than the primary serving cell, or may be other secondary services except the secondary serving cell.
  • the sum of the transmission powers of the terminal device transmitting the PRACH signal and transmitting the physical uplink channel signal is greater than the maximum output of the terminal device, because the type of the physical uplink channel signal sent by the other serving cell is different.
  • the transmit power of the PRACH signal or the physical uplink channel signal is adjusted according to the priority of the PRACH signal and the physical uplink channel signal, until the adjusted total transmit power is less than or equal to the maximum output power of the terminal device.
  • the priority of each signal may be preset.
  • the priority of each signal is set as follows: the priority of the PUSCH signal without UCI is less than or equal to the priority of the PRACH signal, and the PRACH signal is The priority is less than the priority of the PUSCH signal with UCI, and the priority of the PUSCH signal with UCI is less than the priority of the PUCCH signal.
  • the present embodiment reduces the transmission power of the signal with a relatively lower priority according to the principle to ensure that the priority is relatively Higher signal transmission.
  • the remaining transmission power refers to the transmission power remaining after the maximum output power of the terminal device minus the allocated transmission power.
  • step 602 can be implemented by the method illustrated in Figures 7a-c, which is described in detail below in conjunction with Figures 7a-c.
  • the method includes:
  • Step 701 The terminal device obtains the total transmit power by calculating the transmit power of each signal to be sent.
  • Step 702 The terminal device determines whether the total transmit power is greater than the maximum output power of the terminal device. If yes, step 703 is performed. , otherwise it ends;
  • Step 703 The terminal device determines the type of the physical uplink channel signal to be sent, if there is only one type, step 704 is performed, if there are two, step 707 is performed, if there are three, step 713 is performed;
  • Step 704 The terminal device determines whether the priority of the PRACH signal and the priority of the physical uplink channel signal to be sent are the same, if the same, step 705 is performed, otherwise step 706 is performed;
  • Step 705 The terminal device and the like reduce the transmission power of the PRACH signal and the physical uplink channel signal until the adjusted total transmission power is less than or equal to the maximum output power of the terminal device.
  • Step 706 The terminal device satisfies the transmission power of the signal with a high priority, and reduces the transmission power of the signal with a low priority until the adjusted total transmission power is less than or equal to the maximum output power of the terminal device.
  • Step 707 The terminal device meets the transmission power of the signal with the highest priority
  • Step 708 The terminal device determines whether the priorities of the remaining two signals are the same. If they are the same, step 709 is performed, otherwise step 710 is performed;
  • Step 709 The terminal device equals the transmission power of the remaining two signals (that is, the PRACH signal and the physical uplink channel signal) until the adjusted total transmission power is less than or equal to the maximum output power of the terminal device.
  • Step 710 The terminal device determines whether the remaining transmission power meets the priority second signal, and if yes, step 711 is performed, otherwise step 712 is performed;
  • Step 711 The terminal device satisfies the transmission power of the second priority signal, and reduces the transmission power of the signal with the lowest priority until the adjusted total transmission power is less than or equal to the maximum output power of the terminal device.
  • Step 712 The terminal device sets the transmission power of the signal with the lowest priority to 0, and assigns the remaining transmission power to the signal with the next priority.
  • Step 713 The terminal device meets the transmission power of the signal with the highest priority
  • Step 714 The terminal device determines whether the remaining transmission power meets the transmission power of the priority signal, and if yes, step 716 is performed, otherwise step 715 is performed;
  • Step 715 The terminal device allocates the remaining transmission power to the signal of the priority level, and sets the transmission power of the remaining signals to 0.
  • Step 716 The terminal device meets the transmission power of the second priority signal
  • Step 717 The terminal device determines whether the priorities of the remaining two signals are the same, and if yes, step 718 is performed, otherwise step 719 is performed;
  • Step 718 Equalize the transmission power of the remaining two signals until the adjusted total transmission power The rate is less than or equal to the maximum output power of the terminal device.
  • Step 719 The terminal device determines whether the remaining transmit power meets the signal of the remaining two signals with a relatively high priority. If yes, step 720 is performed; otherwise, step 721 is performed;
  • Step 720 The terminal device meets the transmit power of the signal with a relatively high priority among the remaining two signals, and reduces the transmit power of the signal with the lowest priority until the transmit power of the adjusted signal is less than or equal to the maximum output of the terminal device. power.
  • Step 721 The terminal device allocates the remaining transmission power to the signal with a relatively high priority among the remaining two signals, and sets the transmission power of the signal with the lowest priority to 0.
  • the terminal device If the physical uplink channel signal is a PUSCH signal without UCI, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe, and transmits a PUSCH signal without UCI on the PCell or other SCell, the terminal device first The required transmission power on each PUSCH and the required transmission power on the PRACH are calculated according to the foregoing formula (5) and formula (4), respectively.
  • the priority of the PUSCH signal without UCI preset is less than or equal to the priority of the PRACH signal, and the terminal device according to the preset
  • the priority determination adjustment strategy is as follows: If the priority of the PUSCH signal without UCI is equal to the priority of the PRACH signal, the terminal equipment reduces the transmission power on the PRACH and all PUSCHs without UCI until the total transmission power is guaranteed to be less than Or equal to the maximum output power of the terminal device; if the priority of the PUSCH signal without the UCI is less than the priority of the PRACH signal, the terminal device first ensures that the transmission power of the PRACH is satisfied, that is, the transmission power required by the PRACH is allocated to the PRACH, and then The transmit power is reduced by an equal share on each PUSCH without UCI until the total transmit power is guaranteed to be less than or equal to the maximum output power of the terminal device.
  • the terminal device If the physical uplink channel signal is a PUSCH signal with UCI, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe, and transmits a PUSCH signal with UCI on the PCell or other SCell, the terminal device first separately
  • the required transmission power on the PUSCH and the required transmission power on the PRACH are calculated according to the foregoing formula (5) and formula (4).
  • the priority of the PRACH signal preset according to this embodiment is smaller than the priority of the PUSCH signal with UCI, and the terminal device first guarantees that the transmission power of the PUSCH with UCI is satisfied, that is, with UCI
  • the transmit power required for the PUSCH is allocated to the PUSCH with UCI, and then the transmit power is reduced on the PRACH until the total transmit power is guaranteed to be less than or equal to the maximum output power of the terminal device.
  • the terminal device If the physical uplink channel signal is a PUCCH signal, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe, and transmits a PUCCH signal on the PCell, the terminal device first according to the foregoing formula (7) and formula (4, respectively) The required transmit power on the PUCCH and the transmit power required on the PRACH are calculated. If the total transmit power obtained at this time exceeds the maximum output power of the terminal device, the priority of the PRACH signal preset according to this embodiment is smaller than the priority of the PUCCH signal, and the terminal device first ensures that the transmit power of the PUCCH is satisfied. The transmit power required for the PUCCH is allocated to the PUCCH, and then the transmit power is reduced at the PRACH until the total transmit power is guaranteed to be less than or equal to the maximum output power of the terminal device.
  • the terminal device If the physical uplink channel signal is a PUSCH signal without UCI and a PUSCH signal with UCI, also, when the terminal device needs to send a PRACH signal on one SCell in the same subframe, and send a UCI on the PCell or other SCell.
  • the terminal device first calculates the required transmission power on the PUSCH and the required transmission power on the PRACH according to the above formula (5) and formula (4), respectively.
  • the priority of the PUSCH signal without UCI preset is less than or equal to the priority of the PRACH signal, and the priority of the PRACH signal is smaller than the priority of the PRACH signal.
  • the priority of the PUSCH signal of the UCI the terminal device first guarantees that the transmission power of the PUSCH with UCI is satisfied, that is, the transmission power required for the PUSCH with UCI is allocated to the PUSCH with UCI, for the remaining transmission power,
  • the priority of the PUSCH signal without UCI transmitted at the same time is less than or equal to the priority of the PRACH signal, and therefore, the terminal device performs different processing.
  • the terminal device determines whether the remaining transmission power satisfies the transmission power required by the PRACH signal, and if it can satisfy, the terminal device satisfies the transmission power of the PRACH signal. And then reduce the transmission power on all PUSCHs without UCI until the total transmission power is less than or equal to the maximum output power of the terminal device; if not, the terminal device will set the transmission power of the PUSCH signal without UCI Is 0, and the remaining is sent Power is allocated to the PRACH signal.
  • the terminal equipment reduces the transmission power on the PRACH and all PUSCHs without UCI until the total transmission power is guaranteed to be less than or equal to the maximum of the terminal equipment. Output Power.
  • the terminal device If the physical uplink channel signal is a PUSCH signal and a PUCCH signal without UCI, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe, and send a PUSCH signal without UCI on the PCell or other SCell,
  • the terminal device When transmitting the PUCCH signal on the PCell, the terminal device first calculates the required transmission power on the PUCCH according to the foregoing formulas (4), (5), and formula (7), or formulas (4), (6), and formula (7), respectively.
  • the required transmit power on the PUSCH and the transmit power required on the PRACH are examples of the PUCCH according to the foregoing formulas (4), (5), and formula (7), or formulas (4), (6), and formula (7), respectively.
  • the priority of the PUSCH signal without UCI preset is less than or equal to the priority of the PRACH signal, and the priority of the PRACH signal is smaller than the PUCCH.
  • the priority of the signal the terminal device first ensures that the transmission power of the PUCCH is satisfied, that is, the transmission power required by the PUCCH is allocated to the PUCCH. For the remaining transmission power, the priority of the PUSCH signal without the UCI transmitted at the same time is less than or equal to the PRACH. The priority of the signal, therefore, the terminal device performs different processing.
  • the terminal device determines whether the remaining transmission power can satisfy the PRACH signal, and if it can satisfy, the terminal device satisfies the transmission power of the PRACH signal, and then does not The PUSCH with UCI lowers the transmission power until the total transmission power is less than or equal to the maximum output power of the terminal device; if not, the terminal device sets the transmission power of the PUSCH signal without UCI to 0, and the remaining The transmit power is allocated to the PRACH signal.
  • the terminal device reduces the transmission power on the PRACH and all PUSCHs without UCI until the total transmission power is guaranteed to be less than or equal to the maximum of the terminal device. Output Power.
  • the physical uplink channel signal is a PUSCH signal with a UCI and a PUCCH signal, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe
  • the PUSCH signal with UCI is transmitted on the PCell or other SCell, on the PCell.
  • the terminal device When transmitting the PUCCH signal, the terminal device first calculates the required transmission power and PUSCH on the PUCCH according to the foregoing formulas (4), (5) and formula (7), or formulas (4), (5) and formula (6), respectively.
  • the required transmit power and the required transmit power on the PRACH are examples of the required transmit power on the PRACH.
  • the priority of the PRACH signal preset is smaller than the priority of the PUSCH signal with UCI, and the priority of the PUSCH signal with UCI is less than The priority of the PUCCH signal, the terminal device first ensures that the transmission power of the PUCCH is met, The transmission power required for the PUCCH is also allocated to the PUCCH. For the remaining transmission power, the terminal device determines whether the remaining transmission power can satisfy the transmission power of the PUSCH signal with UCI. If it can be satisfied, the terminal device satisfies the PUSCH signal with UCI. The transmission power is then allocated to the PRACH; if not, the terminal equipment sets the transmission power on the PRACH to 0 while allocating the remaining transmission power to the PUSCH signal with UCI.
  • the physical uplink channel signal is a PUSCH signal without UCI, a PUSCH signal with UCI, and a PUCCH signal, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe, send a UCI on the PCell or other SCell.
  • the PUSCH signal and the PUSCH signal without UCI when transmitting the PUCCH signal on the PCell, the terminal device first according to the above formulas (4), (5) and formula (7), or formulas (4), (5) and formula respectively (6) Calculate the required transmission power on the PUCCH and the required transmission power on the PUSCH and the required transmission power on the PRACH.
  • the priority of the PUSCH signal without UCI preset is less than or equal to the priority of the PRACH signal, and the priority of the PRACH signal is smaller than the priority of the PRACH signal.
  • the priority of the PUSCH signal of the UCI, the priority of the PUSCH signal with the UCI is less than the priority of the PUCCH signal, and the terminal device first ensures that the transmission power of the PUCCH is satisfied, that is, the transmission power required by the PUCCH is allocated to the PUCCH, for the remaining transmission. Power, the terminal device determines whether the remaining transmission power can satisfy the transmission power of the PUSCH signal with UCI.
  • the terminal device If the transmission power of the PUSCH signal with UCI can be satisfied, the terminal device satisfies the transmission power of the PUSCH signal with UCI, since the priority of the PUSCH signal without UCI transmitted at the same time is less than or equal to the priority of the PRACH signal, therefore, for the remaining The transmission power, the terminal equipment performs different processing.
  • the terminal device determines whether the remaining transmission power satisfies the transmission power of the PRACH signal, and if satisfied, the terminal device satisfies the transmission power of the PRACH signal, and then The transmit power is reduced on all PUSCHs without UCI until the total transmit power is less than or equal to the maximum output power of the terminal device; if not, the terminal device sets the transmit power of the PUSCH signal without UCI to 0. , the remaining transmit power is allocated to the PRACH signal.
  • the terminal device reduces the transmission power on the PRACH and all PUSCHs without UCI until the total transmission power is guaranteed to be less than or equal to the maximum of the terminal device. Output Power. If the transmission power of the PUSCH signal with UCI cannot be satisfied, the terminal device transmits the transmission power on the PRACH and all without The transmission power on the PUSCH of the UCI is set to 0, and the remaining transmission power is allocated to the PUSCH signal with UCI.
  • the terminal device needs to simultaneously transmit the PRACH signal and the SRS signal on different serving cells in the same OFDM symbol, only the PRACH signal is sent by dropping the SRS signal, or the SRS signal is cancelled.
  • the PRACH signal in the same OFDM symbol transmits only the SRS signal, which reduces the transmission power of the terminal device, and solves the problem that the sum of the transmission powers of the terminal device that needs to simultaneously transmit the SRS signal and the PRACH signal in the same OFDM symbol is greater than the maximum Configure the issue of output power.
  • the terminal device when the terminal device needs to send the PRACH signal on one SCell in the same subframe and the physical uplink channel signal on other cells, if the total transmission power of the terminal device is greater than the maximum output power of the terminal device, the terminal device
  • the power control policy may be determined according to the priority of the PRACH signal and each physical uplink channel signal to ensure that the total transmit power is less than or equal to the maximum output power of the terminal device, thereby limiting the power of the newly emerging terminal device in Rel-11.
  • the scenario provides a practical approach to power control.
  • An embodiment of the present invention further provides a power control method, as described in Embodiment 3 below.
  • the method of Embodiment 3 when facing the simultaneous transmission of the PRACH signal and the SRS signal in the same OFDM symbol, the method of Embodiment 3 does not only transmit one of the signals, but allows them to simultaneously Transmit, but according to the priority policy, the transmit power of the signal with a relatively low priority is controlled. The details are described below.
  • FIG. 8 is a flowchart of a power control method according to an embodiment of the present invention. Referring to FIG. 8, the method includes:
  • Step 801 Determine whether the terminal device needs to send a physical random access channel (PRACH) signal on one secondary serving cell in the same orthogonal frequency division multiplexing (OFDM) symbol, and send an uplink sounding reference signal (SRS) on other serving cells. );
  • PRACH physical random access channel
  • OFDM orthogonal frequency division multiplexing
  • SRS uplink sounding reference signal
  • the other serving cell may be a primary serving cell (PCell), or may be a secondary serving cell (SCell) other than the secondary serving cell.
  • PCell primary serving cell
  • SCell secondary serving cell
  • the SRS signal may be a periodic SRS signal or an aperiodic SRS signal.
  • Step 802 When it is determined that the terminal device needs to send the PRACH signal on one secondary serving cell in the same OFDM symbol, and send the SRS signal on other serving cells, if the total transmission power of the terminal device obtained by the calculation is obtained (that is, the PRACH is sent) Transmit power of the signal and transmit power of the transmitted SRS signal The sum is greater than the maximum output power of the terminal device, and the terminal device adjusts the transmit power of the PRACH signal and the SRS signal according to the preset priority of the PRACH signal and the SRS signal.
  • the priority of the PRACH signal is set to be less than the priority of the SRS signal, and the terminal device first determines whether the maximum output power of the terminal device can satisfy the transmission power of the SRS. If the judgment result is yes, the terminal device satisfies the transmission power of the SRS, and then allocates the remaining transmission power to the PRACH. If the result of the determination is no, the terminal device sets the transmission power on the PRACH to 0, and allocates the transmission power (maximum output power) and the like to all the SRS signals.
  • the terminal device when it is required to simultaneously transmit the PRACH signal and the SRS signal on different serving cells in the same OFDM symbol, the terminal device ensures transmission of a signal with a higher priority by controlling the transmission power of each signal, for example, ensuring The SRS signal is transmitted, thereby solving the problem that in the same OFDM symbol, the terminal device needs to simultaneously transmit the SRS signal and the PRACH signal, and the total sum of the transmission power is greater than the maximum configured output power.
  • the embodiment of the invention further provides a power control method for the terminal device, as described in Embodiment 4 below.
  • the method is based on the method of Embodiment 3, when determining that the terminal device needs to send a PRACH signal on one secondary serving cell in the same subframe, and transmitting a physical uplink channel signal on other serving cells, the power control process of the terminal device
  • Embodiment 4 the same contents as those of the third embodiment are omitted here.
  • FIG. 9 is a flowchart of a power control method according to an embodiment of the present invention. Referring to FIG. 9, the method includes:
  • Step 901 When the terminal device needs to send the physical random access channel PRACH signal on one secondary serving cell in the same orthogonal frequency division multiplexing OFDM symbol, and send the uplink sounding reference signal SRS on other serving cells, if obtained by calculation
  • the total transmission power of the terminal device (that is, the sum of the transmission power of the transmitted PRACH signal and the transmission power of the transmitted SRS signal) is greater than the maximum output power of the terminal device, and the terminal device according to the preset PRACH signal and the location Determining the priority of the SRS signal, and adjusting the transmit power of the signal with a relatively lower priority;
  • This step 901 is the same as the processing of the method of the third embodiment, and is omitted here.
  • Step 902 When the terminal device needs to send the PRACH signal on one secondary serving cell in the same subframe, and send the physical uplink channel signal on other serving cells, if the total transmission power of the terminal device obtained by the calculation is obtained (that is, the PRACH is sent) Transmit power of signal and transmit power of transmitting physical uplink channel signal The sum is greater than the maximum output power of the terminal device, and the terminal device adjusts the transmit power of the signal with a relatively lower priority according to the preset priority of the PRACH signal and the physical uplink channel signal, until after adjustment The total transmit power is less than or equal to the maximum output power of the terminal device.
  • the physical uplink channel signal that may be sent on the other serving cell is any combination of the following signals: a physical uplink control channel PUCCH signal, a physical uplink shared channel PUSCH signal with UCI, and a physical uplink shared channel PUSCH signal without UCI. .
  • the other serving cells here are different according to the type of the physical uplink channel signal, for example, for the PUSCH signal, the other services here may be smaller than the primary serving cell, or may be other secondary services except the secondary serving cell.
  • the sum of the transmission powers of the terminal device transmitting the PRACH signal and transmitting the physical uplink channel signal is greater than the maximum output of the terminal device, because the type of the physical uplink channel signal sent by the other serving cell is different.
  • the transmission power of the signal with a relatively low priority is adjusted according to the priority of the PRACH signal and the physical uplink channel signal until the adjusted total transmission power is less than or equal to the maximum output power of the terminal device.
  • the priority of each signal may be preset.
  • the priority of each signal is set to: the priority of the PRACH signal is smaller than the priority of the PUSCH signal without UCI, without UCI
  • the priority of the PUSCH signal is less than the priority of the PUSCH signal with UCI
  • the priority of the PUSCH signal with UCI is less than the priority of the PUCCH signal.
  • the present embodiment reduces the transmission power of the signal with a relatively lower priority according to the principle to ensure that the priority is relatively Higher signal transmission.
  • the remaining transmission power refers to the transmission power remaining after the maximum output power of the terminal device minus the allocated transmission power.
  • step 902 can be implemented by the method shown in FIGS. 10a-10c, which will be described in detail below with reference to FIGS. 10a-10c.
  • the method includes:
  • Step 1001 The terminal device obtains the total transmit power by calculating the transmit power of each signal to be sent.
  • Step 1002 The terminal device determines whether the total transmit power is greater than the maximum output power of the terminal device. If yes, step 1003 is performed. , otherwise it ends;
  • Step 1003 The terminal device determines the number of types of physical uplink channel signals to be sent. If there is only one type, step 1004 is performed. If there are two types, step 1007 is performed. If there are three types, step 1011 is performed. For the case where there is only one channel signal, please refer to Figure 10a:
  • Step 1004 The terminal device determines whether the transmission power of the signal with a high priority is met. If yes, step 1005 is performed; otherwise, step 1006 is performed;
  • Step 1005 The terminal device satisfies the transmission power of the signal with a high priority, and allocates the remaining transmission power to the signal with a low priority.
  • Step 1006 The terminal device sets the transmission power on the signal with low priority to 0, and allocates the remaining transmission power to the signal with high priority.
  • Step 1007 The terminal device meets the transmission power of the signal with the highest priority
  • Step 1008 The terminal device determines whether the remaining transmission power meets the priority second signal, and if yes, step 1009 is performed, otherwise step 1010 is performed;
  • Step 1009 The terminal device satisfies the transmission power of the signal of the priority level, and allocates the remaining transmission power to the signal with the lowest priority.
  • Step 1010 The terminal device sets the transmission power of the signal with the lowest priority to 0, and assigns the remaining transmission power to the signal with the next priority.
  • Step 1011 The terminal device meets the transmission power of the signal with the highest priority
  • Step 1012 The terminal device determines whether the remaining transmission power meets the priority second signal, and if yes, step 1013 is performed, otherwise step 1017 is performed;
  • Step 1013 The terminal device meets the transmission power of the second priority signal
  • Step 1014 The terminal device determines whether the remaining transmit power meets the third priority signal, and if yes, step 1015 is performed; otherwise, step 1016 is performed;
  • Step 1015 The terminal device satisfies the transmission power of the signal of the third priority, and allocates the remaining transmission power to the signal with the lowest priority.
  • Step 1016 The terminal device sets the transmission power of the signal with the lowest priority to 0, and allocates the remaining transmission power to the signal with the third priority.
  • Step 1017 The terminal device allocates the remaining transmit power to the signal of the next priority, and the remaining signals.
  • the transmit power is set to zero.
  • the terminal device If the physical uplink channel signal is a PUSCH signal without UCI, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe, and transmits a PUSCH signal without UCI on the PCell or other SCell, the terminal device first The required transmit power on each PUSCH and the required transmit power on the PRACH are calculated according to equations (5) and (4), respectively. If the total transmit power obtained at this time exceeds the maximum output power of the terminal device, the priority of the PRACH signal preset according to this embodiment is smaller than the priority of the PUSCH signal without UCI, and the terminal device first determines whether all the conditions can be met. Transmit power of PUSCH without UCI.
  • the terminal device satisfies the transmission power of all PUSCH signals without UCI, and allocates the remaining transmission power to the PRACH. If the judgment result is no, the terminal device sets the transmission power on the PRACH to 0, and divides the remaining transmission power equally on each PUSCH without UCI.
  • the terminal device If the physical uplink channel signal is a PUSCH signal with UCI, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe, and transmits a PUSCH signal with UCI on the PCell or other SCell, the terminal device first separately The required transmission power on the PUSCH and the required transmission power on the PRACH are calculated according to the formula (5) and the formula (4). If the total transmit power obtained at this time exceeds the maximum output power of the terminal device, the priority of the PRACH signal preset according to this embodiment is smaller than the priority of the PUSCH signal with UCI, and the terminal device first ensures that the UCI is satisfied. The transmission power of the PUSCH is then allocated to the PRACH.
  • the terminal device first according to formula (2) and formula (4), respectively.
  • the required transmit power on the PUCCH and the transmit power required on the PRACH are calculated. If the total transmit power obtained at this time exceeds the maximum output power of the terminal device, the priority of the PRACH signal preset according to this embodiment is smaller than the priority of the PUCCH signal, and the terminal device first ensures that the transmit power of the PUCCH is met, and then The remaining transmit power is allocated to the PRACH.
  • the terminal device first calculates the required transmission power on the PUSCH and the required transmission power on the PRACH according to the above formula (5) and formula (4), respectively.
  • the priority of the PRACH signal set in advance according to this embodiment is smaller than the priority of the PUSCH signal without UCI, and the priority of the PUSCH signal without UCI is prioritized.
  • the terminal device If the priority is less than the priority of the PUSCH signal with UCI, the terminal device first ensures that the transmission power of the PUSCH with UCI is satisfied, and then determines whether the remaining transmission power can satisfy the transmission power of the PUSCH signal without UCI, and if so, The terminal device satisfies the transmission power of the PUSCH signal without UCI, and then allocates the remaining transmission power to the PRACH; if not, the terminal device sets the transmission power on the PRACH to 0, and the remaining transmission power is in all without UCI. Equalize on PUSCH.
  • the terminal device If the physical uplink channel signal is a PUSCH signal and a PUCCH signal without UCI, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe, and send a PUSCH signal without UCI on the PCell or other SCell,
  • the terminal device When transmitting the PUCCH signal on the PCell, the terminal device first calculates the required transmission power on the PUCCH according to the foregoing formulas (4), (5) and formula (7), or formulas (4), (5) and formula (6), respectively.
  • the required transmit power on the PUSCH and the transmit power required on the PRACH are examples of the PUCCH according to the foregoing formulas (4), (5) and formula (7), or formulas (4), (5) and formula (6), respectively.
  • the priority of the PRACH signal set in advance according to this embodiment is smaller than the priority of the PUSCH signal without UCI, and the priority of the PUSCH signal without UCI is prioritized. If the level is smaller than the priority of the PUCCH signal, the terminal device first ensures that the transmission power of the PUCCH is satisfied, and then determines whether the remaining transmission power can satisfy the transmission power of the PUSCH signal without UCI. If the terminal equipment meets the UCI without UCI The transmission power of the PUSCH signal is then allocated to the PRACH; if not, the terminal device sets the transmission power on the PRACH to 0 while equally distributing the remaining transmission power on all PUSCHs without UCI.
  • the physical uplink channel signal is a PUSCH signal with a UCI and a PUCCH signal, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe
  • the PUSCH signal with UCI is transmitted on the PCell or other SCell, on the PCell.
  • the terminal device When transmitting the PUCCH signal, the terminal device first calculates the required transmission power and the PUSCH required on the PUCCH according to the foregoing formulas (4), (5) and formula (7), formulas (4), (5) and formula (6), respectively.
  • the transmit power and the transmit power required on the PRACH If you get it at this time The total transmit power exceeds the maximum output power of the terminal device.
  • the priority of the PRACH signal preset according to this embodiment is smaller than the priority of the PUSCH signal with UCI, and the priority of the PUSCH signal with UCI is smaller than the priority of the PUCCH signal. Then, the terminal device first ensures that the transmission power of the PUCCH is satisfied, and then determines whether the remaining transmission power can satisfy the transmission power of the PUSCH signal with UCI, and if yes, the terminal device satisfies the transmission power of the PUSCH signal with UCI, and then the remaining The transmission power is allocated to the PRACH; if not, the terminal device sets the transmission power on the PRACH to 0, and at the same time allocates the remaining transmission power to the PUSCH with UCI.
  • the physical uplink channel signal is a PUSCH signal without UCI, a PUSCH signal with UCI, and a PUCCH signal, that is, when the terminal device needs to transmit a PRACH signal on one SCell in the same subframe, send a UCI on the PCell or other SCell.
  • the PUSCH signal and the PUSCH signal without UCI when transmitting the PUCCH signal on the PCell, the terminal device first according to the above formulas (4), (5) and formula (7), or formulas (4), (5) and formula respectively (6) Calculate the required transmission power on the PUCCH and the required transmission power on the PUSCH and the required transmission power on the PRACH.
  • the priority of the PRACH signal set in advance according to this embodiment is smaller than the priority of the PUSCH signal without UCI, and the priority of the PUSCH signal without UCI is prioritized.
  • the priority is less than the priority of the PUSCH signal with UCI, and the priority of the PUSCH signal with UCI is less than the priority of the PUCCH signal.
  • the terminal device first ensures that the transmission power of the PUCCH is satisfied, and then determines whether the remaining transmission power can satisfy the PUSCH with UCI. The transmit power of the signal.
  • the terminal device sets the transmission power on the PRACH and the transmission power on all PUSCHs without UCI to 0, and then allocates the remaining transmission power to the PUSCH with UCI. If the transmission power of the PUSCH signal with UCI can be satisfied, the terminal device satisfies the transmission power of the PUSCH signal with UCI, and then determines whether the remaining transmission power can satisfy the transmission power of the PUSCH signal without UCI. If the transmission power of the PUSCH signal without UCI can be satisfied, the terminal device satisfies the transmission power of the PUSCH signal without UCI, and then allocates the remaining transmission power to the PRACH. If the transmission power of the PUSCH signal without UCI cannot be satisfied, the terminal device sets the transmission power on the PRACH to 0, and allocates the remaining transmission power to all PUSCHs without UCI.
  • the terminal device when the terminal device needs to simultaneously transmit the PRACH signal and the SRS signal on different serving cells in the same OFDM symbol, when calculating the total obtained terminal device
  • the terminal device adjusts the transmit power of the signal with a relatively lower priority to ensure that the total transmit power is less than or equal to the maximum output power of the terminal device. Therefore, in the same OFDM symbol, the problem that the terminal device needs to simultaneously transmit the SRS signal and the PRACH signal may cause the sum of the transmission power to be greater than the maximum configured output power.
  • the terminal device can adjust the transmission power of the signal with a relatively lower priority according to the priority of the PRACH signal and each physical uplink channel signal, and ensure that the total transmission power is less than or equal to the maximum output power of the terminal device, thereby being a Rel- A new terminal device in 11 provides a practical power control method in a power limited scenario.
  • An embodiment of the present invention further provides a terminal device, as described in Embodiment 5 below. Since the principle of the terminal device is similar to that of the embodiment 1 and the embodiment 2, the implementation of the terminal device can be referred to the implementation of the method of the embodiment 1 and the embodiment 2, and the repeated description is omitted.
  • FIG. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device includes:
  • a first determining unit 111 configured to determine whether the terminal device needs to send a physical random access channel PRACH signal on one secondary serving cell in the same orthogonal frequency division multiplexing OFDM symbol, and send an uplink sounding reference signal SRS on other serving cells;
  • the first processing unit 112 when the first determining unit 111 determines to be YES, discards the SRS signal on the other serving cell, or cancels the SRS signal on the secondary serving cell and the other serving cell The symbol of the PRACH signal within the same OFDM symbol.
  • the terminal device may further include:
  • a second determining unit 113 which determines whether the terminal device needs to send a PRACH signal on one secondary serving cell in the same subframe, and sends a physical uplink channel signal on other serving cells;
  • a second processing unit 114 when the second determining unit 113 determines YES, when the total transmit power is greater than the maximum output power, according to the preset priority of the PRACH signal and the physical uplink channel signal And adjusting a transmit power of the PRACH signal and/or the physical uplink channel signal until the adjusted total transmit power is less than or equal to a maximum output power of the terminal device.
  • the physical uplink channel signal is one type
  • the second processing unit 114 includes: a first determining module 1141, configured to determine whether a priority of the PRACH signal and a priority of the physical uplink channel signal are the same;
  • the first processing module 1142 when the first determining module 1141 determines that it is YES, reduces the transmission power of the PRACH signal and the physical uplink channel signal by an equal amount until the adjusted total transmission power is less than or equal to The maximum output power of the terminal device;
  • the second processing module 1143 when the first determining module 1141 determines to be no, first satisfies the transmission power of the signal with a high priority, and then reduces the transmission power of the signal with a low priority until the adjusted total transmission power Less than or equal to the maximum output power of the terminal device.
  • the physical uplink channel signals are two, and the second processing unit 114 includes:
  • a third processing module 1144 which satisfies a transmission power of a signal with the highest priority
  • a second determining module 1145 after the third processing module 1144 processes, determining whether the priorities of the remaining two signals are the same;
  • the fourth processing module 1146 when the second judging module 1145 determines that it is YES, the equal amount of the transmission power of the remaining two signals is reduced until the adjusted total transmission power is less than or equal to the maximum of the terminal device. Output Power;
  • the third determining module 1147 when the second determining module 1145 determines to be no, determines whether the remaining transmitting power meets the sending power of the priority signal;
  • the fifth processing module 1148 when the third determining module 1147 determines that it is YES, satisfies the transmission power of the signal of the next priority, and reduces the transmission power of the signal with the lowest priority until the adjusted total transmission power is less than or Equal to the maximum output power of the terminal device;
  • the sixth processing module 1149 when the third determining module 1147 determines to be no, sets the transmission power of the signal having the lowest priority to 0, and allocates the remaining transmission power to the signal of the next priority.
  • the physical uplink channel signals are three, and the second processing unit 114 includes:
  • a seventh processing module 11410 which satisfies a transmission power of a signal with the highest priority
  • a fourth determining module 11411 after the processing by the seventh processing module 11410, determining whether the transmission power of the second priority signal is satisfied;
  • the eighth processing module 11412 when the fourth determining module 11411 determines to be no, the remaining sending The power is allocated to the second priority signal, and the transmission power of the other signals is set to 0;
  • the ninth processing module 11413 when the fourth determining module 11411 determines YES, satisfies the transmission power of the signal of the priority level;
  • a fifth determining module 11414 after the processing by the ninth processing module 11413, determining whether the priorities of the remaining two signals are the same;
  • the tenth processing module 11415 when the fifth determining module 11414 determines that it is YES, reduces the transmission power of the remaining two signals by an equal amount until the adjusted total transmitting power is less than or equal to the terminal device. Maximum output power
  • the sixth judging module 11416 when the fifth judging module 11414 determines to be no, determines whether the remaining transmit power meets the transmit power of the higher priority signal among the remaining two signals;
  • the eleventh processing module 11417 when the sixth judging module 11416 determines that it is YES, satisfies the transmission power of the signal with the higher priority, and reduces the transmission power of the signal with the lowest priority until the adjusted total transmission The power is less than or equal to the maximum output power of the terminal device;
  • the twelfth processing module 11418 when the sixth judging module 11416 determines NO, sets the transmission power of the signal with the lowest priority to 0, and allocates the remaining transmission power to the signal with the higher priority.
  • the physical uplink channel signal may include any combination of the following signals: a physical uplink control channel PUCCH signal, a physical uplink shared channel PUSCH signal with UCI, and a physical uplink shared channel PUSCH signal without UCI.
  • the priority of the PRACH signal, the PUCCH signal, the PUSCH signal with UCI, and the PUSCH signal without UCI may be preset: the priority of the PUSCH signal without UCI is less than or equal to the PRACH signal.
  • the priority of the PRACH signal is less than the priority of the PUSCH signal with UCI, and the priority of the PUSCH signal with UCI is smaller than the priority of the PUCCH signal.
  • the terminal device of this embodiment when it is required to simultaneously transmit the PRACH signal and the SRS signal on different serving cells in the same OFDM symbol, only the PRACH signal is sent by dropping the SRS signal, or the same is the same as the SRS signal.
  • the PRACH signal in the OFDM symbol only transmits the SRS signal, which reduces the transmission power of the terminal device, and solves the problem that the total transmission power of the terminal device that needs to simultaneously transmit the SRS signal and the PRACH signal in the same OFDM symbol may be greater than the maximum configured output power.
  • the terminal device can perform the PRACH signal and each physical uplink.
  • the priority of the channel signal determines the power control policy to ensure that the total transmit power is less than or equal to the maximum output power of the terminal device, thereby providing a practical and feasible terminal device in Rel-11 in a power-constrained scenario. Power control method.
  • the embodiment of the invention further provides a terminal device, as described in Embodiment 6 below. Since the principle of the terminal device is similar to that of the embodiment 3 and the embodiment 4, the implementation of the terminal device can be referred to the implementation of the method of the embodiment 3 and the embodiment 4, and the repeated description is omitted.
  • FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device includes:
  • a first determining unit 121 configured to determine whether the terminal device needs to send a physical random access channel PRACH signal on one secondary serving cell in the same orthogonal frequency division multiplexing OFDM symbol, and send an uplink sounding reference signal on other serving cells.
  • SRS physical random access channel
  • the first determining unit 122 determines, when the first determining unit 121 determines that it is YES, whether the total sending power is greater than the maximum output power of the terminal device;
  • the first processing unit 123 adjusts the transmission power of the PRACH signal and the SRS signal according to the priority of the PRACH signal and the SRS signal when the first determining unit 122 determines YES.
  • the first processing unit 123 includes:
  • the first determining module 1231 determines whether the maximum output power of the terminal device can satisfy the sending power of the SRS signal
  • the first processing module 1232 when the first determining module 1231 determines YES, satisfies the transmission power of the SRS signal, and allocates the remaining transmission power to the PRACH signal;
  • the second processing module 1233 when the first determining module 1231 determines NO, sets the transmission power of the PRACH signal to 0, and allocates the maximum output power equal to all SRS signals.
  • the terminal device may further include:
  • a second determining unit 124 configured to determine whether the terminal device needs to send a PRACH signal on one secondary serving cell in the same subframe, and send a physical uplink channel signal on other serving cells;
  • a second determining unit 125 when the second determining unit 124 determines to be YES, determining whether the total sending power is greater than a maximum output power of the terminal device;
  • a second processing unit 126 when the second determining unit 125 determines YES, according to a preset setting Determining a priority of the PRACH signal and the physical uplink channel signal, adjusting a transmit power of the PRACH signal, or adjusting a transmit power of the PRACH signal and the physical uplink channel signal until the adjusted total transmit power is less than or Equal to the maximum output power of the terminal device.
  • the physical uplink channel signal is one type
  • the second processing unit 126 includes: a second determining module 1261, configured to determine whether the maximum output power of the terminal device can meet the transmit power of the signal with a high priority ;
  • the third processing module 1262 when the second determining module 1261 determines YES, satisfies the transmission power of the signal with a high priority, and allocates the remaining transmission power to the signal with a low priority;
  • the fourth processing module 1263 when the second judging module 1261 determines NO, sets the transmission power of the signal having the lower priority to 0, and allocates the remaining transmission power to the signal with the higher priority.
  • the physical uplink channel signal is two
  • the second processing unit 124 includes: a fifth processing module 1264 that satisfies a transmit power of a signal with the highest priority
  • a third judging module 1265 after the processing by the fifth processing module 1264, determining whether the remaining transmission power satisfies the transmission power of the second priority signal;
  • the sixth processing module 1266 when the third determining module 1265 determines YES, satisfies the transmission power of the second priority signal, and then allocates the remaining transmission power to the signal with the lowest priority;
  • the seventh processing module 1267 when the third determination module 1265 determines NO, sets the transmission power of the signal with the lowest priority to 0, and distributes the remaining transmission power to the signal of the next priority.
  • the physical uplink channel signal is three
  • the second processing unit 124 includes: an eighth processing module 1268, which satisfies a transmit power of a signal with the highest priority;
  • the fourth judging module 1269 after the processing by the eighth processing module 1268, determines whether the remaining transmission power satisfies the transmission power of the signal of the next priority;
  • the ninth processing module 12610 when the fourth determining module 1269 determines to be no, the remaining transmission power is assigned the signal of the priority second, and the transmission power of the remaining signals is set to 0;
  • the tenth processing module 12611 when the fourth determining module 1269 determines YES, satisfies the transmission power of the signal of the second priority;
  • a fifth determining module 12612 after the processing by the tenth processing module 12611, determining whether the remaining transmit power meets the signal of the third priority
  • the eleventh processing module 12613 when the fifth determining module 12612 determines that it is YES, satisfies the priority The transmission power of the third signal is then allocated to the signal with the lowest priority; the twelfth processing module 12614, when the fifth determination module 12612 determines NO, the signal with the lowest priority The transmission power is set to 0, and the remaining transmission power is allocated to the signal of the third priority.
  • the physical uplink channel signal may include any combination of the following signals: a physical uplink control channel PUCCH signal, a physical uplink shared channel PUSCH signal with UCI, and a physical uplink shared channel PUSCH signal without UCI.
  • the priority of the PRACH signal, the PUCCH signal, the PUSCH signal with UCI, and the PUSCH signal without UCI may be preset: the priority of the PRACH signal is smaller than the PUSCH signal without UCI Priority: the priority of the PUSCH signal without UCI is smaller than the priority of the PUSCH signal with UCI, and the priority of the PUSCH signal with UCI is smaller than the priority of the PUCCH signal.
  • the terminal device of this embodiment when it is required to simultaneously transmit the PRACH signal and the SRS signal on different serving cells in the same OFDM symbol, the terminal device reduces the transmission power of the signal with a relatively lower priority to ensure the total transmission power. Less than or equal to the maximum output power of the terminal device. Therefore, in the same OFDM symbol, the problem that the terminal device needs to simultaneously transmit the SRS signal and the PRACH signal may cause the sum of the transmission power to be greater than the maximum configured output power. Further, when the PRACH signal needs to be sent on one SCell in the same subframe, and the physical uplink channel signal is sent on other cells, the terminal device can determine the power control policy according to the priority of the PRACH signal and each physical uplink channel signal. The total transmit power is guaranteed to be less than or equal to the maximum output power of the terminal device, thereby providing a practical power control method for the newly emerging terminal device in the Rel-11 in a power limited scenario.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a terminal device, the program causes the computer to execute the power control method described in Embodiment 1 - Embodiment 4 in the base station.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the power control method described in Embodiment 1 - Embodiment 4 in a base station.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

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Abstract

本发明实施例提供了一种功率控制方法和终端设备,其中,所述方法包括:当终端设备需要在同一个正交频分复用OFDM符号内在一个次服务小区上发送物理随机接入信道PRACH信号,在其他服务小区上发送上行探测参考信号SRS时,终端设备丢掉所述其他服务小区上的SRS信号,或者打掉所述次服务小区上与所述其他服务小区上SRS信号处于同一个OFDM符号内的PRACH信号的符号。本实施例的方法,通过丢掉SRS信号而只发送PRACH信号,或者通过打掉与SRS信号处于同一个OFDM符号内的PRACH信号而只发送SRS信号,降低了终端设备的发送功率,解决了在同一个OFDM符号内,终端设备需要同时发送SRS信号和PRACH信号可能导致的发送功率总和大于最大配置输出功率的问题。

Description

一种功率控制方法和终端设备 技术领域
本发明涉及通信领域 , 特别涉及一种终端功率受限情况下的功率控制方法和终 端设备。 背景技术
在长期演进 (LTE, Long Term Evolution)系统中,对终端设备发送物理上行共享信 道 (Physical uplink share channel, PUSCH), 物理上行控制信道 (Physical uplink control channel, PUCCH), 上行探测参考信号 (Sounding reference signal, SRS)以及物理随机 接入信道 (Physical random access channel, PRACH)时的功率控制方法进行了定义 ( 3GPP TS 36.213 V 8.6.0)。 其中:
PUSCH的功控公式为:
PpuscH ('') = min{¾Ax 01og10 (MPUSCH ( )) + P0_PUSCH ( ) + · PL + ΔΤΡ( ) + ( )} [dBm] (1); PUCCH的功控公式为:
PpUCCH (0 = min tAX ' P。— PUCCH + PL + h(nCQI ' nHARQ ) + AF— PUCCH iF) + 8^)} [dBm] (2);
SRS的功控公式为:
PSRS ('.) = min{PMAX , /¾RS OFFSET + 101og10 (MSRS ) + P0_PUSCH (i) + - PL + ( )} [dBm] (3);
PRACH的功控公式为:
P = min [PCMAX^C (i), PREAMBLE _ RECEIVED _ TARGET _ POWER + PL } [dBm] (4)。 在 LTE系统中, 同一个终端设备不会在同一个子帧中同时发送 PUSCH, PUCCH 和 PRACH信道。 同时, 同一个终端设备也不会在同一个正交频分复用 (Orthogonal Frequency Division Multiplexing, OFDM) 符号中同时发送 SRS和 PUSCH, SRS和 PUCCH, 以及 SRS和 PRACH。 另一方面, 从 PUSCH, PUCCH, PRACH和 SRS的 功控公式中可以看出,当上述上行信号的发送功率超过终端设备的最大配置输出功率 (PCMAX: Configured Maximum Output Power)后, 即发生终端设备输出功率溢出时, 终端设备在发送上述上行信号时所用的发送功率将等于终端设备的最大配置输出功 率。
在增强的长期演进 (LTE-A: LTE-Advanced)系统的 Rel-10中, 采用了载波聚合技 术, 并且在每个服务小区上进行独立的功率上行发送信号的功率控制, 具体的功率控 制方法为:
PUSCH的功率控制:
当在服务小区 c上只有 PUSCH传输时, 终端设备在第 i个子帧在服务小区 c上 的 P
Figure imgf000004_0001
当在服务小区 c上既有 PUSCH又有 PUCCH传输时, 终端设备在第 i个子帧在 服务小区 c上的 PUSCH的发送功率为:
■PpuscH
Figure imgf000004_0002
PUCCH的功率控制:
当在服务小区 c上有 PUCCH传输时, 终端设备在第 i个子帧在服务小区 c上的 PUCCH的发送功率为:
,、 . f "PcMAX,c('')' Γ 1π
PpUCCH (ι ) = mm ( \ , 、 , Λ [dBm] (7)
PUCCH + PLc + hnCQI, nHARQ, nSR )+ ½— PUCCH \F ) + ATxD (F' ) + g{'))
SRS的功率控制:
当在服务小区 c上有 SRS传输时,终端设备在第 i个子帧在服务小区 c上的 SRS 的发送功率为:
¾RS,c ('·) = min { PCMAX,c ('·)' ¾RS_OFFSET,c (™) + l〇lo¾。 ( SRS_C ) + — PUSCH,C ( + c( j) . PLC + fc (i) } [dBm] (8)
PRACH的发送功率的控制方法和 LTE相同, 在此省略说明。
由于采用了载波聚合技术, 因此当终端设备配置了多个服务小区后,会出现在同 一个子帧中, 在不同的服务小区上同时发送多个 PUSCH (如图 1(a)) 或者同时发送 PUSCH和 PUCCH (如图 l(b))。 另一方面, 由于对终端能力进行了增强, 终端设备可 以在主服务小区 (Primary Serving Cell)上在同一个子帧中同时发送 PUSCH和 PUCCH (如图 l(c) ) o
当出现上述情况, 即在同一个子帧内终端设备需要同时发送多个 PUSCH或者终 端设备需要同时发送 PUSCH和 PUCCH时, 会出现多个 PUSCH的发送功率总合大 于终端设备的最大配置输出功率, 或者 PUSCH和 PUCCH的发送功率总合大于终端 设备的最大输出功率。 为了指导在该情况下终端设备的发送功率分配, 在 LTE-A的 标准化中定义了终端设备发送功率受限情况下的功率控制方法。 具体为: 当只有不带上行控制信号 (Uplink control signal, UCI)的多个 PUSCH需要同时发 送时, 终端设备首先根据公式 (5)计算出每个服务小区上 PUSCH需要的发送功率。如 果此时得到的总的发送功率超过了终端设备的最大输出功率, 那么终端设备在每个 PUSCH上同等份额的降低发送功率直到保证总的发送功率小于或者等于终端设备的 最大输出功率。
当不带 UCI的 PUSCH和 PUCCH需要同时发送时, 终端设备首先分别根据公式 (5) 计算出只有 PUSCH传输的服务小区上 PUSCH需要的发送功率, 根据公式 (6)和 公式 (7)计算同时有 PUSCH和 PUCCH传输的服务小区上 PUSCH需要的发送功率和 PUCCH需要的发送功率。 如果此时得到的总的发送功率超过了终端设备的最大输出 功率, 那么终端设备首先保证满足 PUCCH 的发送功率, 然后在每个不带 UCI 的 PUSCH上同等份额的降低发送功率直到保证总的发送功率小于或者等于终端设备的 最大输出功率。
当不带 UCI的 PUSCH和带有 UCI的 PUSCH需要同时发送时,终端设备首先根 据公式 (5)计算出每个服务小区上 PUSCH需要的发送功率。如果此时得到的总的发送 功率超过了终端设备的最大输出功率, 那么终端设备首先保证满足带有 UCI 的 PUSCH的发送功率, 然后在每个不带 UCI的 PUSCH上同等份额的降低发送功率直 到保证总的发送功率小于或者等于终端设备的最大输出功率。
当 PUCCH, 不带 UCI的 PUSCH和带有 UCI的 PUSCH需要同时发送时, 终端 设备首先分别根据公式 (5)计算出只有 PUSCH传输的服务小区上 PUSCH需要的发送 功率,根据公式 (6)和公式 (7)计算同时有 PUSCH和 PUCCH传输的服务小区上 PUSCH 需要的发送功率和和 PUCCH需要的发送功率。如果此时得到的总的发送功率超过了 终端设备的最大输出功率, 那么终端设备首先保证满足 PUCCH的发送功率, 其次保 证满足带有 UCI的 PUSCH的发送功率,然后在每个不带 UCI的 PUSCH上同等份额 的降低发送功率直到保证总的发送功率小于或者等于终端设备的最大输出功率。
在增强的长期演进 (LTE-A: LTE-Advanced)系统的 Rel-10中, 当终端配置了多个 服务小区后,终端设备在所有服务小区发送上行信号时使用同一个上行的时间提前量 值来保证上行同步。 该时间提前量的初始值通过在主服务小区上做随机接入来获得。 因此在 Rel-10中, 基站只为终端设备在其主服务小区 (Primary Serving Cell, PCell) 上配置 PRACH信道。 而终端设备也只会在 PCell上发送 PRACH信号。 同时, 当终 端设备需要在 PCell上发送 PRACH信号时, 终端设备不会在 PCell或者其它次服务 小区(Secondary Serving Cell)上发送其它的上行信号,包括 PUSCH, PUCCH和 SRS。
发明人在实现本发明的过程中发现, 在 Rel-11 中, 由于上行需要支持来自不同 站点的载波的聚合以及频带间的载波聚合技术,因此无法保证所有 SCell具有和 PCell 相同的上行信号时间提前量。 终端设备为了获得某些 SCell上的时间提前量, 需要在 该 SCell上做随机接入。 因此, 在 Rel-11中, 基站需要为终端设备在某些 SCell上配 置 PRACH信道。 而终端设备也需要在该 SCell上发送 PRACH信号。 此时, 除了上 述 Rel-10中会出现的同一个子帧内终端设备需要同时发送多个 PUSCH或者终端设备 需要同时发送 PUSCH和 PUCCH夕卜, 终端设备还有可能需要同时发送 PUSCH和 PRACH, PUCCH和 PRACH以及 SRS和 PRACH。 因此下述三种场景也会导致出现 终端设备的发送功率总合大于终端设备的最大配置输出功率。
场景 1(如图 2所示): 终端设备需要同时在 PCell和 SCell上分别发送的 PUXCH (PUXCH表示 PUSCH或者 PUCCH)禾 B PRACH的发送功率总合大于终端设备的最 大配置输出功率。
场景 2(如图 3所示): 终端设备需要同时在 PCell和 SCell上分别发送 SRS和
PRACH的发送功率总合大于终端设备的最大配置输出功率。
场景 3(如图 4所示): 终端设备需要同时在 PCell和 SCell上分别发送 PUXSH和 PRACH的发送功率总和以及 SRS和 PRACH的发送功率总合均大于终端设备的最大 配置输出功率。
可见, 当在同一个子帧内, 终端设备需要同时发送的 PUSCH和 PRACH的发送 功率总合大于终端设备的最大配置输出功率; 或者, 在同一个子帧内, 终端设备需要 同时发送的 PUCCH和 PRACH的发送功率总合大于终端设备的最大配置输出功率; 或者, 在同一个 OFDM符号内, 终端设备需要同时发送的 SRS和 PRACH的发送功 率总合大于终端设备的最大配置输出功率时,终端设备如何对上行发送信号进行功率 控制是目前亟待解决的一个问题。
应该注意, 上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、 完整的说明, 并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发 明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。 发明内容
本发明实施例的目的在于提供一种终端功率受限情况下的功率控制方法和终端 设备, 以解决终端设备需要在同一个 OFDM符号内同时发送 SRS和 PRACH时, 发 送功率总和大于该终端设备的最大配置输出功率,或者同时解决终端设备需要在同一 个子帧内同时发送 PRACH和其他物理上行信道信号时,发送功率总和大于该终端设 备的最大配置输出功率的问题。
根据本发明实施例的一个方面, 提供了一种功率控制方法, 该方法包括: 当终端 设备需要在同一个正交频分复用 OFDM符号内在一个次服务小区上发送物理随机接 入信道 PRACH信号, 在其他服务小区上发送上行探测参考信号 SRS时, 终端设备 丢掉所述其他服务小区上的 SRS信号, 或者打掉所述次服务小区上与所述其他服务 小区上 SRS信号处于同一个 OFDM符号内的 PRACH信号的符号。
基于该方法, 当终端设备需要在同一个子帧内在一个次服务小区上发送 PRACH 信号,在其他服务小区上发送物理上行信道信号时, 如果所述终端设备的总的发送功 率大于所述终端设备的最大输出功率,则终端设备根据预先设定的所述 PRACH信号 和所述物理上行信道信号的优先级,调整所述 PRACH信号和 /或所述物理上行信道信 号的发送功率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功率。
根据本发明实施例的另一个方面, 还提供了一种功率控制方法, 该方法包括: 当 终端设备需要在同一个正交频分复用 OFDM符号内在一个次服务小区上发送物理随 机接入信道 PRACH信号, 在其他服务小区上发送上行探测参考信号 SRS时, 如果 所述终端设备的总的发送功率大于所述终端设备的最大输出功率,则终端设备根据所 述 PRACH信号和所述 SRS信号的优先级, 调整所述 PRACH信号和所述 SRS信号 的发送功率。
基于该方法, 当终端设备需要在同一个子帧内在一个次服务小区上发送 PRACH 信号,在其他服务小区上发送物理上行信道信号时, 如果终端设备的总的发送功率大 于终端设备的最大输出功率,则终端设备根据预先设定的所述 PRACH信号和所述物 理上行信道信号的优先级,调整所述 PRACH信号的发送功率,或者调整所述 PRACH 信号和所述物理上行信道信号的发送功率,直到调整后的总的发送功率小于或者等于 终端设备的最大输出功率。
根据本发明实施例的另一个方面, 还提供了一种终端设备, 所述终端设备包括: 第一确定单元, 其确定终端设备是否需要在同一个正交频分复用 OFDM符号内 在一个次服务小区上发送物理随机接入信道 PRACH信号,在其他服务小区上发送上 行探测参考信号 SRS;
第一处理单元, 其在所述第一确定单元确定为是时, 丢掉所述其他服务小区上的 SRS信号, 或者打掉所述次服务小区上与所述其他服务小区上 SRS信号处于同一个 OFDM符号内的 PRACH信号的符号。
在该实施例中, 该终端设备还包括:
第二确定单元, 其确定终端设备是否需要在同一个子帧内在一个次服务小区上发 送 PRACH信号, 在其他服务小区上发送物理上行信道信号;
第二处理单元, 其在所述第二确定单元确定为是时, 在总的发送功率大于最大输 出功率时, 根据预先设定的所述 PRACH信号和所述物理上行信道信号的优先级, 调 整所述 PRACH信号和 /或所述物理上行信道信号的发送功率,直到调整后的总的发送 功率小于或者等于终端设备的最大输出功率。
根据本发明实施例的另一个方面, 还提供了一种终端设备, 所述终端设备包括: 第一确定单元, 其确定所述终端设备是否需要在同一个正交频分复用 OFDM符 号内在一个次服务小区上发送物理随机接入信道 PRACH信号,在其他服务小区上发 送上行探测参考信号 SRS;
第一判断单元, 其在所述第一确定单元确定为是时, 判断总的发送功率是否大于 终端设备的最大输出功率;
第一处理单元, 其在所述第一判断单元判断为是时, 根据所述 PRACH信号和所 述 SRS信号的优先级, 调整所述 PRACH信号和所述 SRS信号的发送功率。
在该实施例中, 该终端设备还包括:
第二确定单元, 其确定所述终端设备是否需要在同一个子帧内在一个次服务小区 上发送 PRACH信号, 在其他服务小区上发送物理上行信道信号;
第二判断单元, 其在所述第二确定单元确定为是时, 判断总的发送功率是否大于 终端设备的最大输出功率;
第二处理单元,其在所述第二判断单元判断为是时,根据预先设定的所述 PRACH 信号和所述物理上行信道信号的优先级, 调整所述 PRACH信号的发送功率, 或者调 整所述 PRACH信号和所述物理上行信道信号的发送功率,直到调整后的总的发送功 率小于或者等于终端设备的最大输出功率。
本发明实施例的有益效果在于: 解决了 Rel-11 中新出现的场景, 例如在同一个 OFDM符号内终端设备同时发送 PRACH和 SRS时, 导致的总的发送功率大于最大 配置输出功率的问题,也可以同时解决在同一个子帧内终端设备同时发送 PRACH和 物理上行信道信号时, 导致的总的发送功率大于最大配置输出功率的问题。
参照后文的说明和附图,详细公开了本发明的特定实施方式, 指明了本发明的原 理可以被采用的方式。应该理解, 本发明的实施方式在范围上并不因而受到限制。在 所附权利要求的精神和条款的范围内,本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和 /或示出的特征可以以相同或类似的方式在一个或更多 个其它实施方式中使用, 与其它实施方式中的特征相组合, 或替代其它实施方式中的 特征。
应该强调, 术语"包括 /包含"在本文使用时指特征、 整件、 步骤或组件的存在, 但并不排除一个或更多个其它特征、 整件、 步骤或组件的存在或附加。 附图说明
参照以下的附图可以更好地理解本发明的很多方面。附图中的部件不是成比例绘 制的, 而只是为了示出本发明的原理。 为了便于示出和描述本发明的一些部分, 附图 中对应部分可能被放大或縮小。在本发明的一个附图或一种实施方式中描述的元素和 特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外,在 附图中,类似的标号表示几个附图中对应的部件, 并可用于指示多于一种实施方式中 使用的对应部件。 在附图中:
图 la是在 LTE-A系统的 Rel-10中,终端设备在同一个子帧中在不同的小区上同 时发送多个 PUSCH的示意图;
图 lb是在 LTE-A系统的 Rel-10中,终端设备在同一个子帧中在不同的小区上同 时发送 PUSCH和 PUCCH的示意图;
图 lc是在 LTE-A系统的 Rel-10中,终端设备在同一个子帧中在主服务小区上同 时发送 PUSCH和 PUCCH的示意图;
图 2 是在 LTE-A 系统的 Rel-11 中, 终端设备同时在不同的小区上分别发送 PUXCH和 PRACH的示意图; 图 3是在 LTE-A系统的 Rel-11中, 终端设备同时在不同的小区上分别发送 SRS 禾口 PRACH的示意图;
图 4 是在 LTE-A 系统的 Rel-11 中, 终端设备同时在不同的小区上分别发送 PUXCH, SRS和 PRACH的示意图;
图 5是本发明实施例提供的一种功率控制方法的流程图;
图 6是基于图 5的实施例的本发明另一实施例提供的功率控制方法的流程图; 图 7a-图 7c是图 6实施例中步骤 602的方法流程图;
图 8是本发明另一实施例提供的一种功率控制方法的流程图;
图 9是基于图 8的实施例的本发明另一实施例提供的功率控制方法的流程图; 图 10a-图 10c是图 9实施例中步骤 902的方法流程图;
图 11是本发明实施例提供的一种终端设备的组成示意图;
图 12是本发明另一实施例提供的一种终端设备的组成示意图。 具体实施方式
参照附图, 通过下面的说明书, 本发明实施例的前述以及其它特征将变得明显。 这些实施方式只是示例性的, 不是对本发明的限制。
本发明实施例提供了一种终端设备的功率控制方法, 如下面的实施例 1所述。 实施例 1
图 5为本发明实施例提供的一种功率控制方法的流程图, 请参照图 5, 该方法包 括:
步骤 501 : 确定终端设备是否需要在同一个正交频分复用 (OFDM) 符号内在一 个次服务小区上发送物理随机接入信道 (PRACH) 信号, 在其他服务小区上发送上 行探测参考信号 (SRS );
其中, 其他服务小区可以是主服务小区 (PCell), 也可以是除上述次服务区小区 以外的其他次服务小区 (SCell)。
其中, SRS信号可以是周期性 SRS信号, 也可以是非周期性 SRS信号。
步骤 502: 当确定终端设备需要在同一个 OFDM符号内在一个次服务小区上发 送 PRACH信号, 在其他服务小区上发送 SRS信号时, 终端设备在所述 OFDM符号 内只发送所述 PRACH信号或者只发送所述 SRS信号。 其中, 如果终端设备在该 OFDM符号内只发送 PRACH信号, 则终端设备可以 丢掉 (drop) 该其他服务小区上的 SRS信号, 即保证在同一个 OFDM符号内在不同 服务小区上同时需要发送 PRACH信号和 SRS信号时, 只发送 PRACH信号。
其中, 如果终端设备在该 OFDM 符号内只发送 SRS 信号, 则终端设备打掉 (puncture)所述次服务小区上与所述其他服务小区上 SRS信号处于同一个 OFDM符 号内的 PRACH信号的符号, 即保证在同一个 OFDM符号内在不同服务小区上同时 需要发送 PRACH信号和 SRS信号时, 只发送 SRS信号。
通过以上方法, 当需要在同一个 OFDM 符号内在不同的服务小区上同时发送 PRACH信号和 SRS信号时, 选择只发送 SRS信号或者只发送 PRACH信号, 由此降 低了终端设备的发送功率, 解决了在同一个 OFDM符号内, 终端设备需要同时发送 SRS信号和 PRACH信号可能导致的发送功率总和大于最大配置输出功率的问题。
本发明实施例还提供了一种终端设备的功率控制方法, 如下面的实施例 2所述。 该方法是在实施例 1的方法的基础上,当确定终端设备需要在同一个子帧内在一个次 服务小区上发送 PRACH信号, 在其他服务小区上发送物理上行信道信号时, 终端设 备的功率控制过程, 其中, 与实施例 1相同的内容在此省略。
实施例 2
图 6为本发明实施例提供的一种功率控制方法的流程图, 请参照图 6, 该方法包 括:
步骤 601 : 当终端设备需要在同一个正交频分复用 OFDM符号内在一个次服务 小区上发送物理随机接入信道 PRACH信号,在其他服务小区上发送上行探测参考信 号 SRS时, 终端设备在所述 OFDM符号内只发送所述 PRACH信号或者只发送所述 SRS信号;
其中, 该步骤 601的处理与实施例 1的方法的处理相同, 在此省略。
步骤 602: 当终端设备需要在同一个子帧内在一个次服务小区上发送 PRACH信 号,在其他服务小区上发送物理上行信道信号时, 如果通过计算获得的终端设备的总 的发送功率(也即发送 PRACH信号的发送功率和发送物理上行信道信号的发送功率 之和)大于该终端设备的最大输出功率, 则终端设备根据预先设定的所述 PRACH信 号和所述物理上行信道信号的优先级,调整所述 PRACH信号和 /或所述物理上行信道 信号的发送功率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功 率。
其中,可能在所述其他服务小区上发送的物理上行信道信号为以下信号的任意组 合: 物理上行控制信道 PUCCH信号, 带 UCI的物理上行共享信道 PUSCH信号, 不 带 UCI的物理上行共享信道 PUSCH信号。其中, 这里的其他服务小区根据该物理上 行信道信号的类型而有所不同, 例如: 对于 PUSCH信号, 这里的其他服务小于可以 是主服务小区, 也可以是除上述次服务小区以外的其他次服务小区; 对于 PUCCH信 号, 这里的其他服务小区是指主服务小区。
其中, 由于在所述其他服务小区上发送的物理上行信道信号的类型不同,本实施 例在确定终端设备发送上述 PRACH信号和发送上述物理上行信道信号的发送功率的 总和大于该终端设备的最大输出功率时,根据该 PRACH信号和该物理上行信道信号 的优先级, 调整该 PRACH信号或者该物理上行信道信号的发送功率, 直到调整后的 总的发送功率小于或者等于该终端设备的最大输出功率。其中,各个信号的优先级可 以是预先设定的, 在本实施例中, 将各个信号的优先级设定为: 不带 UCI的 PUSCH 信号的优先级小于等于 PRACH信号的优先级, PRACH信号的优先级小于带 UCI 的 PUSCH信号的优先级, 带 UCI的 PUSCH信号的优先级小于 PUCCH信号的优先 级。
在本实施例中,由于优先级相对较低的信号对于终端设备来说相对不重要,因此, 本实施例根据这一原则, 降低优先级相对较低的信号的发送功率, 以保证优先级相对 较高的信号的发送。在以下的说明中,剩余的发送功率是指终端设备的最大输出功率 减去已分配的发送功率后剩下的发送功率。
在一个实施方式中, 步骤 602可以通过图 7 a-图 7c所示的方法来实现, 以下结合 图 7 a-图 7c进行详细说明。
请参照图 7a-图 7c, 该方法包括:
步骤 701 : 终端设备通过计算要发送的各个信号的发送功率得到总的发送功率; 步骤 702:终端设备判断所述总的发送功率是否大于该终端设备的最大输出功率, 如果是, 则执行步骤 703, 否则结束;
步骤 703: 终端设备判断要发送的物理上行信道信号的种类, 如果只有一种, 则 执行步骤 704, 如果有两种, 则执行步骤 707, 如果有三种, 则执行步骤 713;
对于要同时发送的物理上行信道信号只有一种的情况, 请参照图 7a: 步骤 704: 终端设备判断 PRACH信号的优先级和要发送的物理上行信道信号的 优先级是否相同, 如果相同, 则执行步骤 705, 否则执行步骤 706;
步骤 705: 终端设备等份额的降低该 PRACH信号和该物理上行信道信号的发送 功率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功率。
步骤 706: 终端设备满足优先级高的信号的发送功率, 降低优先级低的信号的发 送功率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功率。
对于要同时发送的物理上行信道信号有两种的情况, 请参照图 7b:
步骤 707: 终端设备满足优先级最高的信号的发送功率;
步骤 708: 终端设备判断剩余的两个信号的优先级是否相同, 如果相同, 则执行 步骤 709, 否则执行步骤 710;
步骤 709: 终端设备等份额的降低该剩余两个信号 (也即 PRACH信号和该物理 上行信道信号)的发送功率, 直到调整后的总的发送功率小于或者等于终端设备的最 大输出功率。
步骤 710: 终端设备判断剩余的发送功率是否满足优先级其次的信号, 如果是, 则执行步骤 711, 否则执行步骤 712;
步骤 711 : 终端设备满足优先级其次的信号的发送功率, 降低优先级最低的信号 的发送功率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功率。
步骤 712: 终端设备将优先级最低的信号的发送功率设为 0, 将剩余的发送功率 分配给优先级其次的信号。
对于要同时发送的物理上行信道信号有三种的情况, 请参照图 7c:
步骤 713: 终端设备满足优先级最高的信号的发送功率;
步骤 714:终端设备判断剩余的发送功率是否满足优先级其次的信号的发送功率, 如果是, 则执行步骤 716, 否则执行步骤 715;
步骤 715: 终端设备将剩余的发送功率分配给该优先级其次的信号, 将其余的信 号的发送功率设为 0。
步骤 716: 终端设备满足优先级其次的信号的发送功率;
步骤 717: 终端设备判断剩余的两个信号的优先级是否相同, 如果是, 则执行步 骤 718, 否则执行步骤 719;
步骤 718: 等份额的降低该剩余两个信号的发送功率, 直到调整后的总的发送功 率小于或者等于终端设备的最大输出功率。
步骤 719: 终端设备判断剩余的发送功率是否满足该剩余的两个信号中, 优先级 相对较高的信号, 如果是, 则执行步骤 720, 否则执行步骤 721 ;
步骤 720:终端设备满足该剩余的两个信号中优先级相对较高的信号的发送功率, 降低优先级最低的信号的发送功率,直到调整后的信号的发送功率小于等于该终端设 备的最大输出功率。
步骤 721 : 终端设备将剩余的发送功率分配给该剩余的两个信号中优先级相对较 高的信号, 将优先级最低的信号的发送功率设为 0。
在本实施例中,由于需要在其他服务小区发送的物理上行信道信号的种类和优先 级不同, 需要调整发送功率的信号也随之不同。 为了使图 7的方法更加清楚, 以下分 情况加以说明。
对于物理上行信道信号只有一种的情况:
如果物理上行信道信号为不带 UCI的 PUSCH信号, 也即, 当终端设备需要在同 一个子帧内在一个 SCell上发送 PRACH信号, 在 PCell或者其它 SCell上发送不带 UCI 的 PUSCH 信号时, 终端设备首先分别根据前述公式 (5)和公式 (4)计算出每个 PUSCH上需要的发送功率和 PRACH上需要的发送功率。 如果此时得到的总的发送 功率超过了终端设备的最大输出功率, 根据本实施例预先设定的不带 UCI的 PUSCH 信号的优先级小于等于 PRACH信号的优先级,则终端设备根据该预设优先级确定调 整策略如下: 如果不带 UCI的 PUSCH信号的优先级等于 PRACH信号的优先级, 则 终端设备在 PRACH和所有不带 UCI的 PUSCH上等份额的降低发送功率直到保证总 的发送功率小于或者等于终端设备的最大输出功率;如果不带 UCI的 PUSCH信号的 优先级小于 PRACH信号的优先级, 则终端设备首先保证满足 PRACH的发送功率, 也即将 PRACH所需的发送功率分配给 PRACH, 然后在每个不带 UCI的 PUSCH上 同等份额的降低发送功率直到保证总的发送功率小于或者等于终端设备的最大输出 功率。
如果物理上行信道信号为带 UCI的 PUSCH信号, 也即, 当终端设备需要在同一 个子帧内在一个 SCell上发送 PRACH信号,在 PCell或者其它 SCell上发送带有 UCI 的 PUSCH信号时, 终端设备首先分别根据前述公式 (5)和公式 (4)计算出 PUSCH上需 要的发送功率和 PRACH上需要的发送功率。如果此时得到的总的发送功率超过了终 端设备的最大输出功率,根据本实施例预先设定的 PRACH信号的优先级小于带 UCI 的 PUSCH信号的优先级,则终端设备首先保证满足带有 UCI的 PUSCH的发送功率, 也即将带有 UCI 的 PUSCH所需的发送功率分配给带有 UCI 的 PUSCH, 然后在 PRACH上降低发送功率直到保证总的发送功率小于或者等于终端设备的最大输出功 率。
如果物理上行信道信号为 PUCCH信号, 也即, 当终端设备需要在同一个子帧内 在一个 SCell上发送 PRACH信号, 在 PCell上发送 PUCCH信号时, 终端设备首先 分别根据前述公式 (7)和公式 (4)计算出 PUCCH上需要的发送功率和 PRACH上需要的 发送功率。如果此时得到的总的发送功率超过了终端设备的最大输出功率,根据本实 施例预先设定的 PRACH信号的优先级小于 PUCCH信号的优先级, 则终端设备首先 保证满足 PUCCH的发送功率, 也即将 PUCCH所需的发送功率分配给 PUCCH, 然 后在 PRACH降低发送功率直到保证总的发送功率小于或者等于终端设备的最大输出 功率。
对于物理上行信道信号有两种的情况:
如果物理上行信道信号为不带 UCI的 PUSCH信号和带 UCI的 PUSCH信号,也 艮卩, 当终端设备需要在同一个子帧内在一个 SCell上发送 PRACH信号, 在 PCell或 者其它 SCell上发送不带 UCI的 PUSCH信号和带 UCI的 PUSCH信号时, 终端设备 首先分别根据前述公式 (5)和公式 (4)计算出 PUSCH上需要的发送功率和 PRACH上需 要的发送功率。如果此时得到的总的发送功率超过了终端设备的最大输出功率,根据 本实施例预先设定的不带 UCI的 PUSCH信号的优先级小于等于 PRACH信号的优先 级, PRACH信号的优先级小于带 UCI的 PUSCH信号的优先级, 则终端设备首先保 证满足带有 UCI的 PUSCH的发送功率,也即将带有 UCI的 PUSCH所需的发送功率 分配给带有 UCI 的 PUSCH, 对于剩余的发送功率, 由于同时发送的不带 UCI 的 PUSCH信号的优先级小于等于 PRACH信号的优先级, 因此, 终端设备进行不同的 处理。 对于不带 UCI的 PUSCH信号的优先级小于 PRACH信号的优先级的情况: 终 端设备判断剩余的发送功率能否满足 PRACH信号所需的发送功率, 如果能满足, 则 终端设备满足 PRACH信号的发送功率, 然后在所有不带 UCI的 PUSCH上等份额的 降低发送功率直到保证总的发送功率小于或者等于终端设备的最大输出功率;如果不 能满足, 则终端设备将不带 UCI的 PUSCH信号的发送功率设为 0, 并将剩余的发送 功率分配给 PRACH信号。 对于不带 UCI的 PUSCH信号的优先级等于 PRACH信号 的优先级的情况: 终端设备在 PRACH和所有不带 UCI的 PUSCH上等份额的降低发 送功率直到保证总的发送功率小于或者等于终端设备的最大输出功率。
如果物理上行信道信号为不带 UCI的 PUSCH信号和 PUCCH信号, 也即, 当终 端设备需要在同一个子帧内在一个 SCell上发送 PRACH信号,在 PCell或者其它 SCell 上发送不带 UCI的 PUSCH信号, 在 PCell上发送 PUCCH信号时, 终端设备首先分 别根据前述公式 (4)、 (5)和公式 (7), 或者公式 (4)、 (6)和公式 (7)计算出 PUCCH上需要 的发送功率和 PUSCH上需要的发送功率以及 PRACH上需要的发送功率。 如果此时 得到的总的发送功率超过了终端设备的最大输出功率,根据本实施例预先设定的不带 UCI的 PUSCH信号的优先级小于等于 PRACH信号的优先级, PRACH信号的优先 级小于 PUCCH信号的优先级, 则终端设备首先保证满足 PUCCH的发送功率, 也即 将 PUCCH所需的发送功率分配给 PUCCH, 对于剩余的发送功率, 由于同时发送的 不带 UCI的 PUSCH信号的优先级小于等于 PRACH信号的优先级, 因此, 终端设备 进行不同的处理。对于不带 UCI的 PUSCH信号的优先级小于 PRACH信号的优先级 的情况: 终端设备判断剩余的发送功率能否满足 PRACH信号, 如果能满足, 则终端 设备满足 PRACH信号的发送功率, 然后在所有不带 UCI的 PUSCH上等份额的降低 发送功率直到保证总的发送功率小于或者等于终端设备的最大输出功率;如果不能满 足, 则终端设备将不带 UCI的 PUSCH信号的发送功率设为 0, 将剩余的发送功率分 配给 PRACH信号。 对于不带 UCI的 PUSCH信号的优先级等于 PRACH信号的优先 级的情况, 终端设备在 PRACH和所有不带 UCI的 PUSCH上等份额的降低发送功率 直到保证总的发送功率小于或者等于终端设备的最大输出功率。
如果物理上行信道信号为带 UCI的 PUSCH信号和 PUCCH信号, 也即, 当终端 设备需要在同一个子帧内在一个 SCell上发送 PRACH信号, 在 PCell或者其它 SCell 上发送带 UCI的 PUSCH信号, 在 PCell上发送 PUCCH信号时, 终端设备首先分别 根据前述公式 (4)、 (5)和公式 (7), 或者公式 (4)、 (5)和公式 (6)计算出 PUCCH上需要的 发送功率和 PUSCH上需要的发送功率以及 PRACH上需要的发送功率。 如果此时得 到的总的发送功率超过了终端设备的最大输出功率, 根据本实施例预先设定的 PRACH信号的优先级小于带 UCI的 PUSCH信号的优先级, 带 UCI的 PUSCH信号 的优先级小于 PUCCH信号的优先级,则终端设备首先保证满足 PUCCH的发送功率, 也即将 PUCCH所需的发送功率分配给 PUCCH, 对于剩余的发送功率, 终端设备判 断剩余的发送功率能否满足带 UCI的 PUSCH信号的发送功率, 如果能满足, 则终端 设备满足带 UCI的 PUSCH信号的发送功率,然后将剩余的发送功率分配给 PRACH; 如果不能满足, 则终端设备将 PRACH上的发送功率设为 0, 同时将剩余的发送功率 分配给带 UCI的 PUSCH信号。
对于物理上行信道信号有三种的情况:
如果物理上行信道信号为不带 UCI的 PUSCH信号、 带 UCI的 PUSCH信号和 PUCCH信号, 也即, 当终端设备需要在同一个子帧内在一个 SCell上发送 PRACH 信号, 在 PCell或者其它 SCell上发送带 UCI的 PUSCH信号和不带 UCI的 PUSCH 信号, 在 PCell上发送 PUCCH信号时, 终端设备首先分别根据前述公式 (4)、 (5)和公 式 (7), 或者公式 (4)、 (5)和公式 (6)计算出 PUCCH上需要的发送功率和 PUSCH上需 要的发送功率以及 PRACH上需要的发送功率。如果此时得到的总的发送功率超过了 终端设备的最大输出功率,根据本实施例预先设定的不带 UCI的 PUSCH信号的优先 级小于等于 PRACH信号的优先级, PRACH信号的优先级小于带 UCI的 PUSCH信 号的优先级, 带 UCI的 PUSCH信号的优先级小于 PUCCH信号的优先级, 则终端设 备首先保证满足 PUCCH 的发送功率, 也即将 PUCCH 所需的发送功率分配给 PUCCH, 对于剩余的发送功率, 终端设备判断剩余的发送功率能否满足带 UCI 的 PUSCH信号的发送功率。 如果能满足带 UCI的 PUSCH信号的发送功率, 则终端设 备满足带 UCI的 PUSCH信号的发送功率, 由于同时发送的不带 UCI的 PUSCH信号 的优先级小于等于 PRACH信号的优先级, 因此, 对于剩余的发送功率, 终端设备进 行不同的处理。对于不带 UCI的 PUSCH信号的优先级小于 PRACH信号的优先级的 情况,终端设备判断剩余的发送功率能否满足 PRACH信号的发送功率,如果能满足, 则终端设备满足 PRACH信号的发送功率, 然后在所有不带 UCI的 PUSCH上等份额 的降低发送功率直到保证总的发送功率小于或者等于终端设备的最大输出功率;如果 不能满足, 则终端设备将不带 UCI的 PUSCH信号的发送功率设为 0, 将剩余的发送 功率分配给 PRACH信号。 对于不带 UCI的 PUSCH信号的优先级等于 PRACH信号 的优先级的情况, 终端设备在 PRACH和所有不带 UCI的 PUSCH上等份额的降低发 送功率直到保证总的发送功率小于或者等于终端设备的最大输出功率。如果不能满足 带 UCI的 PUSCH信号的发送功率, 则终端设备将 PRACH上的发送功率和所有不带 UCI的 PUSCH上的发送功率设为 0,同时将剩余的发送功率分配给带 UCI的 PUSCH 信号。
通过本实施例的功率控制方法, 当终端设备需要在同一个 OFDM符号内在不同 的服务小区上同时发送 PRACH信号和 SRS信号时, 通过丢掉 SRS信号而只发送 PRACH信号,或者通过打掉与 SRS信号处于同一个 OFDM符号内的 PRACH信号而 只发送 SRS信号, 降低了终端设备的发送功率, 解决了在同一个 OFDM符号内, 终 端设备需要同时发送 SRS信号和 PRACH信号可能导致的发送功率总和大于最大配 置输出功率的问题。 进一步的, 当终端设备需要在同一个子帧内在一个 SCell上发送 PRACH信号, 而在其他 Cell上发送物理上行信道信号时, 如果终端设备的总的发送 功率大于终端设备的最大输出功率,则终端设备可以根据该 PRACH信号和各物理上 行信道信号的优先级,确定功率控制策略,保证总的发送功率小于或者等于终端设备 的最大输出功率, 由此为 Rel-11 中新出现终端设备在功率受限的场景提供了一种切 实可行的功率控制方法。
本发明实施例还提供了一种功率控制方法, 如下面的实施例 3所述。 与实施例 1 和实施例 2的方法不同的是, 实施例 3的方法当面临在同一个 OFDM符号内同时发 送 PRACH信号和 SRS信号时, 不是只发送其中的一种信号, 而是让他们同时发送, 但根据优先级策略会控制优先级相对较低的信号的发送功率。 以下进行详细说明。
实施例 3
图 8为本发明实施例提供的一种功率控制方法的流程图, 请参照图 8, 该方法包 括:
步骤 801 : 确定终端设备是否需要在同一个正交频分复用 (OFDM) 符号内在一 个次服务小区上发送物理随机接入信道 (PRACH) 信号, 在其他服务小区上发送上 行探测参考信号 (SRS );
其中, 其他服务小区可以是主服务小区 (PCell), 也可以是除上述次服务区小区 以外的其他次服务小区 (SCell)。
其中, SRS信号可以是周期性 SRS信号, 也可以是非周期性 SRS信号。
步骤 802: 当确定终端设备需要在同一个 OFDM符号内在一个次服务小区上发 送 PRACH信号, 在其他服务小区上发送 SRS信号时, 如果通过计算获得的终端设 备的总的发送功率 (也即发送 PRACH信号的发送功率和发送 SRS信号的发送功率 之和)大于该终端设备的最大输出功率, 则终端设备根据预先设定的所述 PRACH信 号和所述 SRS信号的优先级, 调整所述 PRACH信号和所述 SRS信号的发送功率。
其中, 本实施例预先设定 PRACH信号的优先级小于 SRS信号的优先级, 则终端 设备首先判断该终端设备的最大输出功率是否能满足所述 SRS 的发送功率。 如果判 断结果为是, 那么终端设备满足所述 SRS 的发送功率, 然后将剩余的发送功率分配 给 PRACH。 如果判断结果为否, 那么终端设备将 PRACH上的发送功率设为 0, 把 发送功率 (最大输出功率) 等份额的分配给所有 SRS信号。
通过以上方法, 当需要在同一个 OFDM 符号内在不同的服务小区上同时发送 PRACH信号和 SRS信号时, 终端设备通过对各信号的发送功率的控制, 确保优先级 较高的信号的发送,例如确保 SRS信号的发送, 由此解决了在同一个 OFDM符号内, 终端设备需要同时发送 SRS信号和 PRACH信号可能导致的发送功率总和大于最大 配置输出功率的问题。
本发明实施例还提供了一种终端设备的功率控制方法, 如下面的实施例 4所述。 该方法是在实施例 3的方法的基础上,当确定终端设备需要在同一个子帧内在一个次 服务小区上发送 PRACH信号, 在其他服务小区上发送物理上行信道信号时, 终端设 备的功率控制过程, 其中, 与实施例 3相同的内容在此省略。
实施例 4
图 9为本发明实施例提供的一种功率控制方法的流程图, 请参照图 9, 该方法包 括:
步骤 901 : 当终端设备需要在同一个正交频分复用 OFDM符号内在一个次服务 小区上发送物理随机接入信道 PRACH信号,在其他服务小区上发送上行探测参考信 号 SRS时, 如果通过计算获得的终端设备的总的发送功率 (也即发送 PRACH信号 的发送功率和发送 SRS信号的发送功率之和) 大于该终端设备的最大输出功率, 则 终端设备根据预先设定的所述 PRACH信号和所述 SRS信号的优先级, 调整优先级 相对较低的信号的发送功率;
其中, 该步骤 901的处理与实施例 3的方法的处理相同, 在此省略。
步骤 902: 当终端设备需要在同一个子帧内在一个次服务小区上发送 PRACH信 号,在其他服务小区上发送物理上行信道信号时, 如果通过计算获得的终端设备的总 的发送功率(也即发送 PRACH信号的发送功率和发送物理上行信道信号的发送功率 之和)大于该终端设备的最大输出功率, 则终端设备根据预先设定的所述 PRACH信 号和所述物理上行信道信号的优先级, 调整优先级相对较低的信号的发送功率, 直到 调整后的总的发送功率小于或者等于终端设备的最大输出功率。
其中,可能在所述其他服务小区上发送的物理上行信道信号为以下信号的任意组 合: 物理上行控制信道 PUCCH信号, 带 UCI的物理上行共享信道 PUSCH信号, 不 带 UCI的物理上行共享信道 PUSCH信号。其中, 这里的其他服务小区根据该物理上 行信道信号的类型而有所不同, 例如: 对于 PUSCH信号, 这里的其他服务小于可以 是主服务小区, 也可以是除上述次服务小区以外的其他次服务小区; 对于 PUCCH信 号, 这里的其他服务小区是指主服务小区。
其中, 由于在所述其他服务小区上发送的物理上行信道信号的类型不同,本实施 例在确定终端设备发送上述 PRACH信号和发送上述物理上行信道信号的发送功率的 总和大于该终端设备的最大输出功率时,根据该 PRACH信号和该物理上行信道信号 的优先级, 调整优先级相对较低的信号的发送功率, 直到调整后的总的发送功率小于 或者等于该终端设备的最大输出功率。 其中, 各个信号的优先级可以是预先设定的, 在本实施例中, 将各个信号的优先级设定为: PRACH信号的优先级小于不带 UCI的 PUSCH信号的优先级, 不带 UCI的 PUSCH信号的优先级小于带 UCI的 PUSCH信 号的优先级, 带 UCI的 PUSCH信号的优先级小于 PUCCH信号的优先级。
在本实施例中,由于优先级相对较低的信号对于终端设备来说相对不重要,因此, 本实施例根据这一原则, 降低优先级相对较低的信号的发送功率, 以保证优先级相对 较高的信号的发送。在以下的说明中,剩余的发送功率是指终端设备的最大输出功率 减去已分配的发送功率后剩下的发送功率。
在本实施例中, 由于在同一个 OFDM符号内既发送 PRACH又发送 SRS, 因此, 当在同一个子帧内既有 PRACH要发, 又有物理上行信道信号要发时, 在实施例 4中 步骤 902的处理与实施例 2中步骤 602的处理略有不同。具体的, 步骤 902可以通过 图 10a-图 10c所示的方法来实现, 以下结合图 10a-图 10c进行详细说明。
请参照图 10a-图 10c, 该方法包括:
步骤 1001 : 终端设备通过计算要发送的各个信号的发送功率得到总的发送功率; 步骤 1002: 终端设备判断所述总的发送功率是否大于该终端设备的最大输出功 率, 如果是, 则执行步骤 1003, 否则结束; 步骤 1003: 终端设备判断要发送的物理上行信道信号的种类的数量, 如果只有一 种,则执行步骤 1004,如果有两种,则执行步骤 1007,如果有三种,则执行步骤 1011 ; 对于物理上行信道信号只有一种的情况, 请参照图 10a:
步骤 1004: 终端设备判断是否满足优先级高的信号的发送功率, 如果是, 则执行 步骤 1005, 否则执行步骤 1006;
步骤 1005: 终端设备满足优先级高的信号的发送功率,将剩余的发送功率分配给 优先级低的信号。
步骤 1006: 终端设备将优先级低的信号上的发送功率设为 0, 将剩余的发送功率 分配给优先级高的信号。
对于物理上行信道信号有两种的情况, 请参照图 10b:
步骤 1007: 终端设备满足优先级最高的信号的发送功率;
步骤 1008: 终端设备判断剩余的发送功率是否满足优先级其次的信号, 如果是, 则执行步骤 1009, 否则执行步骤 1010;
步骤 1009: 终端设备满足该优先级其次的信号的发送功率,将剩余的发送功率分 配给优先级最低的信号。
步骤 1010: 终端设备将优先级最低的信号的发送功率设为 0, 将剩余的发送功率 分配给优先级其次的信号。
对于物理上行信道信号有三种的情况, 请参照图 10c:
步骤 1011 : 终端设备满足优先级最高的信号的发送功率;
步骤 1012: 终端设备判断剩余的发送功率是否满足优先级其次的信号, 如果是, 则执行步骤 1013, 否则执行步骤 1017;
步骤 1013: 终端设备满足优先级其次的信号的发送功率;
步骤 1014: 终端设备判断剩余的发送功率是否满足优先级第三的信号, 如果是, 则执行步骤 1015, 否则执行步骤 1016;
步骤 1015: 终端设备满足优先级第三的信号的发送功率,将剩余的发送功率分配 给优先级最低的信号。
步骤 1016: 终端设备将优先级最低的信号的发送功率设为 0, 将剩余的发送功率 分配给优先级第三的信号。
步骤 1017: 终端设备将剩余的发送功率分配给优先级其次的信号,将剩余的信号 的发送功率设为 0。
在本实施例中,由于需要在其他服务小区发送的物理上行信道信号的种类和优先 级不同, 需要调整发送功率的信号也随之不同。 为了使图 10的方法更加清楚, 以下 分情况加以说明。
对于物理上行信道信号只有一种的情况:
如果物理上行信道信号为不带 UCI的 PUSCH信号, 也即, 当终端设备需要在同 一个子帧内在一个 SCell上发送 PRACH信号, 在 PCell或者其它 SCell上发送不带 UCI的 PUSCH信号时, 终端设备首先分别根据公式 (5)和公式 (4)计算出每个 PUSCH 上需要的发送功率和 PRACH上需要的发送功率。如果此时得到的总的发送功率超过 了终端设备的最大输出功率,根据本实施例预先设定的 PRACH信号的优先级小于不 带 UCI 的 PUSCH信号的优先级, 终端设备首先判断是否能满足所有不带 UCI 的 PUSCH的发送功率。如果判断结果为是,那么终端设备满足所有不带 UCI的 PUSCH 信号的发送功率, 并将剩余发送功率分配给 PRACH。 如果判断结果为否, 那么终端 设备将 PRACH上的发送功率设为 0, 将剩余的发送功率在每个不带 UCI的 PUSCH 上均分。
如果物理上行信道信号为带 UCI的 PUSCH信号, 也即, 当终端设备需要在同一 个子帧内在一个 SCell上发送 PRACH信号,在 PCell或者其它 SCell上发送带有 UCI 的 PUSCH信号时, 终端设备首先分别根据公式 (5)和公式 (4)计算出 PUSCH上需要的 发送功率和 PRACH上需要的发送功率。如果此时得到的总的发送功率超过了终端设 备的最大输出功率, 根据本实施例预先设定的 PRACH信号的优先级小于带 UCI的 PUSCH信号的优先级, 终端设备首先保证满足带有 UCI的 PUSCH的发送功率, 然 后将剩余发送功率分配给 PRACH。
如果物理上行信道信号为 PUCCH信号, 也即, 当终端设备需要在同一个子帧内 在一个 SCell上发送 PRACH信号, 在 PCell上发送 PUCCH信号时, 终端设备首先 分别根据公式 (2)和公式 (4)计算出 PUCCH上需要的发送功率和 PRACH上需要的发送 功率。如果此时得到的总的发送功率超过了终端设备的最大输出功率,根据本实施例 预先设定的 PRACH信号的优先级小于 PUCCH信号的优先级, 终端设备首先保证满 足 PUCCH的发送功率, 然后将剩余发送功率分配给 PRACH。
对于物理上行信道信号有两种的情况: 如果物理上行信道信号为不带 UCI的 PUSCH信号和带 UCI的 PUSCH信号,也 艮卩, 当终端设备需要在同一个子帧内在一个 SCell上发送 PRACH信号, 在 PCell或 者其它 SCell上发送不带 UCI的 PUSCH信号和带 UCI的 PUSCH信号时, 终端设备 首先分别根据前述公式 (5)和公式 (4)计算出 PUSCH上需要的发送功率和 PRACH上需 要的发送功率。如果此时得到的总的发送功率超过了终端设备的最大输出功率,根据 本实施例预先设定的 PRACH信号的优先级小于不带 UCI的 PUSCH信号的优先级, 不带 UCI的 PUSCH信号的优先级小于带 UCI的 PUSCH信号的优先级,则终端设备 首先保证满足带有 UCI的 PUSCH的发送功率,然后判断剩余的发送功率能否满足不 带 UCI的 PUSCH信号的发送功率,如果能满足,则终端设备满足不带 UCI的 PUSCH 信号的发送功率, 然后将剩余发送功率分配给 PRACH; 如果不能满足, 则终端设备 将 PRACH上发送功率设为 0, 同时将剩余的发送功率在所有不带 UCI的 PUSCH上 均分。
如果物理上行信道信号为不带 UCI的 PUSCH信号和 PUCCH信号, 也即, 当终 端设备需要在同一个子帧内在一个 SCell上发送 PRACH信号,在 PCell或者其它 SCell 上发送不带 UCI的 PUSCH信号, 在 PCell上发送 PUCCH信号时, 终端设备首先分 别根据前述公式 (4)、 (5)和公式 (7), 或者公式 (4)、 (5)和公式 (6)计算出 PUCCH上需要 的发送功率和 PUSCH上需要的发送功率以及 PRACH上需要的发送功率。 如果此时 得到的总的发送功率超过了终端设备的最大输出功率, 根据本实施例预先设定的 PRACH信号的优先级小于不带 UCI的 PUSCH信号的优先级, 不带 UCI的 PUSCH 信号的优先级小于 PUCCH信号的优先级, 则终端设备首先保证满足 PUCCH的发送 功率, 然后判断剩余的发送功率能否满足不带 UCI的 PUSCH信号的发送功率, 如果 能满足, 则终端设备满足不带 UCI的 PUSCH信号的发送功率, 然后将剩余发送功率 分配给 PRACH; 如果不能满足, 则终端设备将 PRACH上的发送功率设为 0, 同时 将剩余的发送功率在所有不带 UCI的 PUSCH上均分。
如果物理上行信道信号为带 UCI的 PUSCH信号和 PUCCH信号, 也即, 当终端 设备需要在同一个子帧内在一个 SCell上发送 PRACH信号, 在 PCell或者其它 SCell 上发送带 UCI的 PUSCH信号, 在 PCell上发送 PUCCH信号时, 终端设备首先分别 根据前述公式 (4)、 (5)和公式 (7), 公式 (4)、 (5)和公式 (6)计算出 PUCCH上需要的发送 功率和 PUSCH上需要的发送功率以及 PRACH上需要的发送功率。 如果此时得到的 总的发送功率超过了终端设备的最大输出功率,根据本实施例预先设定的 PRACH信 号的优先级小于带 UCI的 PUSCH信号的优先级,带 UCI的 PUSCH信号的优先级小 于 PUCCH信号的优先级, 则终端设备首先保证满足 PUCCH的发送功率, 然后判断 剩余的发送功率能否满足带 UCI的 PUSCH信号的发送功率, 如果能满足, 则终端设 备满足带 UCI的 PUSCH信号的发送功率, 然后将剩余发送功率分配给 PRACH; 如 果不能满足, 则终端设备将 PRACH上的发送功率设为 0, 同时再将剩余的发送功率 分配给带 UCI的 PUSCH。
对于物理上行信道信号有三种的情况:
如果物理上行信道信号为不带 UCI的 PUSCH信号、 带 UCI的 PUSCH信号和 PUCCH信号, 也即, 当终端设备需要在同一个子帧内在一个 SCell上发送 PRACH 信号, 在 PCell或者其它 SCell上发送带 UCI的 PUSCH信号和不带 UCI的 PUSCH 信号, 在 PCell上发送 PUCCH信号时, 终端设备首先分别根据前述公式 (4)、 (5)和公 式 (7), 或者公式 (4)、 (5)和公式 (6)计算出 PUCCH上需要的发送功率和 PUSCH上需 要的发送功率以及 PRACH上需要的发送功率。如果此时得到的总的发送功率超过了 终端设备的最大输出功率,根据本实施例预先设定的 PRACH信号的优先级小于不带 UCI的 PUSCH信号的优先级,不带 UCI的 PUSCH信号的优先级小于带 UCI的 PUSCH 信号的优先级, 带 UCI的 PUSCH信号的优先级小于 PUCCH信号的优先级, 则终端 设备首先保证满足 PUCCH 的发送功率, 然后判断剩余的发送功率能否满足带 UCI 的 PUSCH信号的发送功率。 如果不能满足带 UCI的 PUSCH信号的发送功率, 则终 端设备将 PRACH上的发送功率和所有不带 UCI的 PUSCH上的发送功率设为 0, 同 时再将剩余的发送功率分配给带 UCI的 PUSCH。 如果能满足带 UCI的 PUSCH信号 的发送功率, 则终端设备满足带 UCI的 PUSCH信号的发送功率, 然后判断剩余的发 送功率能否满足不带 UCI的 PUSCH信号的发送功率。如果能满足不带 UCI的 PUSCH 信号的发送功率, 则终端设备满足不带 UCI的 PUSCH信号的发送功率, 然后将剩余 发送功率分配给 PRACH。 如果不能满足不带 UCI的 PUSCH信号的发送功率, 则终 端设备将 PRACH上的发送功率设为 0, 同时将剩余的发送功率分配给所有不带 UCI 的 PUSCH。
通过本实施例的功率控制方法, 当终端设备需要在同一个 OFDM符号内在不同 的服务小区上同时发送 PRACH信号和 SRS信号时, 当计算获得的终端设备的总的 发送功率大于终端设备的最大输出功率时,终端设备调整优先级相对较低的信号的发 送功率, 以确保总的发送功率小于或者等于该终端设备的最大输出功率。 由此解决了 在同一个 OFDM符号内, 终端设备需要同时发送 SRS信号和 PRACH信号可能导致 的发送功率总和大于最大配置输出功率的问题。进一步的, 当终端设备需要在同一个 子帧内在一个 SCell上发送 PRACH信号,而在其他 Cell上发送物理上行信道信号时, 当计算获得的终端设备的总的发送功率大于终端设备的最大输出功率时,终端设备可 以根据该 PRACH信号和各物理上行信道信号的优先级,调整优先级相对较低的信号 的发送功率, 保证总的发送功率小于或者等于终端设备的最大输出功率, 由此为 Rel-11中新出现终端设备在功率受限的场景提供了一种切实可行的功率控制方法。
本发明实施例还提供了一种终端设备, 如下面的实施例 5所述。 由于该终端设备 解决问题的原理与实施例 1和实施例 2的方法类似,因此该终端设备的实施可以参见 实施例 1和实施例 2的方法的实施, 重复之处不再赘述。
实施例 5
图 11是本发明实施例提供的一种终端设备的组成示意图, 请参照图 11, 该终端 设备包括:
第一确定单元 111,其确定终端设备是否需要在同一个正交频分复用 OFDM符号 内在一个次服务小区上发送物理随机接入信道 PRACH信号,在其他服务小区上发送 上行探测参考信号 SRS;
第一处理单元 112, 其在所述第一确定单元 111确定为是时, 丢掉所述其他服务 小区上的 SRS信号, 或者打掉所述次服务小区上与所述其他服务小区上 SRS信号处 于同一个 OFDM符号内的 PRACH信号的符号。
在本实施例中, 该终端设备还可以包括:
第二确定单元 113, 其确定终端设备是否需要在同一个子帧内在一个次服务小区 上发送 PRACH信号, 在其他服务小区上发送物理上行信道信号;
第二处理单元 114, 其在所述第二确定单元 113确定为是时, 在总的发送功率大 于最大输出功率时,根据预先设定的所述 PRACH信号和所述物理上行信道信号的优 先级,调整所述 PRACH信号和 /或所述物理上行信道信号的发送功率,直到调整后的 总的发送功率小于或者等于终端设备的最大输出功率。
在一个实施方式中, 所述物理上行信道信号为一种, 则第二处理单元 114包括: 第一判断模块 1141, 其判断所述 PRACH信号的优先级和所述物理上行信道信号 的优先级是否相同;
第一处理模块 1142, 其在所述第一判断模块 1141判断为是时, 等份额的降低所 述 PRACH信号和所述物理上行信道信号的发送功率,直到调整后的总的发送功率小 于或者等于终端设备的最大输出功率;
第二处理模块 1143, 其在所述第一判断模块 1141判断为否时, 先满足优先级高 的信号的发送功率,然后降低优先级低的信号的发送功率, 直到调整后的总的发送功 率小于或者等于终端设备的最大输出功率。
在另外一个实施方式中, 所述物理上行信道信号为两种, 则第二处理单元 114包 括:
第三处理模块 1144, 其在满足优先级最高的信号的发送功率;
第二判断模块 1145, 其在所述第三处理模块 1144处理之后判断剩余的两个信号 的优先级是否相同;
第四处理模块 1146, 其在所述第二判断模块 1145判断为是时, 等份额的降低所 述剩余的两个信号的发送功率,直到调整后的总的发送功率小于或者等于终端设备的 最大输出功率;
第三判断模块 1147, 其在所述第二判断模块 1145判断为否时, 判断剩余发送功 率是否满足优先级其次的信号的发送功率;
第五处理模块 1148, 其在所述第三判断模块 1147判断为是时, 满足优先级其次 的信号的发送功率, 降低优先级最低的信号的发送功率, 直到调整后的总的发送功率 小于或者等于终端设备的最大输出功率;
第六处理模块 1149, 其在所述第三判断模块 1147判断为否时, 将优先级最低的 信号的发送功率设为 0, 将剩余的发送功率分配给优先级其次的信号。
在另外一个实施方式中, 所述物理上行信道信号为三种, 则第二处理单元 114包 括:
第七处理模块 11410, 其满足优先级最高的信号的发送功率;
第四判断模块 11411, 其在所述第七处理模块 11410处理之后判断是否满足优先 级其次的信号的发送功率;
第八处理模块 11412, 其在所述第四判断模块 11411判断为否时, 将剩余的发送 功率分配给优先级其次的信号, 将其他信号的发送功率设为 0;
第九处理模块 11413, 其在所述第四判断模块 11411判断为是时, 满足优先级其 次的信号的发送功率;
第五判断模块 11414, 其在所述第九处理模块 11413处理之后判断剩余的两个信 号的优先级是否相同;
第十处理模块 11415, 其在所述第五判断模块 11414判断为是时, 则等份额的降 低所述剩余的两个信号的发送功率,直到调整后的总的发送功率小于或者等于终端设 备的最大输出功率;
第六判断模块 11416, 其在所述第五判断模块 11414判断为否时, 判断剩余发送 功率是否满足所述剩余的两个信号中优先级较高的信号的发送功率;
第十一处理模块 11417, 其在所述第六判断模块 11416判断为是时满足所述优先 级较高的信号的发送功率, 降低优先级最低的信号的发送功率, 直到调整后的总的发 送功率小于或者等于终端设备的最大输出功率;
第十二处理模块 11418, 其在所述第六判断模块 11416判断为否时, 将优先级最 低的信号的发送功率设为 0, 将剩余的发送功率分配给所述优先级较高的信号。
在本实施例中, 该物理上行信道信号可以包括以下信号的任意组合: 物理上行控 制信道 PUCCH信号, 带 UCI的物理上行共享信道 PUSCH信号, 不带 UCI的物理上 行共享信道 PUSCH信号。其中,该 PRACH信号、该 PUCCH信号、该带 UCI的 PUSCH 信号以及该不带 UCI 的 PUSCH信号的优先级可以预先设定为: 所述不带 UCI 的 PUSCH信号的优先级小于等于所述 PRACH信号的优先级, 所述 PRACH信号的优 先级小于带 UCI的 PUSCH信号的优先级,所述带 UCI的 PUSCH信号的优先级小于 所述 PUCCH信号的优先级。
通过本实施例的终端设备, 当需要在同一个 OFDM符号内在不同的服务小区上 同时发送 PRACH信号和 SRS信号时, 通过丢掉 SRS信号而只发送 PRACH信号, 或者通过打掉与 SRS信号处于同一个 OFDM符号内的 PRACH信号而只发送 SRS信 号, 降低了终端设备的发送功率, 解决了在同一个 OFDM符号内, 终端设备需要同 时发送 SRS信号和 PRACH信号可能导致的发送功率总和大于最大配置输出功率的 问题。 进一步的, 当需要在同一个子帧内在一个 SCell上发送 PRACH信号, 而在其 他 Cell上发送物理上行信道信号时,终端设备可以根据该 PRACH信号和各物理上行 信道信号的优先级,确定功率控制策略,保证总的发送功率小于或者等于终端设备的 最大输出功率, 由此为 Rel-11 中新出现终端设备在功率受限的场景提供了一种切实 可行的功率控制方法。
本发明实施例还提供了一种终端设备, 如下面的实施例 6所述。 由于该终端设备 解决问题的原理与实施例 3和实施例 4的方法类似,因此该终端设备的实施可以参见 实施例 3和实施例 4的方法的实施, 重复之处不再赘述。
实施例 6
图 12是本发明实施例提供的一种终端设备的组成示意图, 请参照图 12, 该终端 设备包括:
第一确定单元 121, 其确定所述终端设备是否需要在同一个正交频分复用 OFDM 符号内在一个次服务小区上发送物理随机接入信道 PRACH信号,在其他服务小区上 发送上行探测参考信号 SRS;
第一判断单元 122, 其在所述第一确定单元 121确定为是时, 判断总的发送功率 是否大于终端设备的最大输出功率;
第一处理单元 123, 其在所述第一判断单元 122判断为是时, 根据所述 PRACH 信号和所述 SRS信号的优先级,调整所述 PRACH信号和所述 SRS信号的发送功率。
在一个实施例中, 第一处理单元 123包括:
第一判断模块 1231, 其判断所述终端设备的最大输出功率是否能满足所述 SRS 信号的发送功率;
第一处理模块 1232, 其在所述第一判断模块 1231判断为是时, 满足所述 SRS信 号的发送功率, 将剩余的发送功率分配给所述 PRACH信号;
第二处理模块 1233, 其在所述第一判断模块 1231判断为否时, 将所述 PRACH 信号的发送功率设为 0, 将所述最大输出功率等份额的分配给所有 SRS信号。
在本实施例中, 该终端设备还可以包括:
第二确定单元 124, 其确定所述终端设备是否需要在同一个子帧内在一个次服务 小区上发送 PRACH信号, 在其他服务小区上发送物理上行信道信号;
第二判断单元 125, 其在所述第二确定单元 124确定为是时, 判断总的发送功率 是否大于终端设备的最大输出功率;
第二处理单元 126, 其在所述第二判断单元 125判断为是时, 根据预先设定的所 述 PRACH信号和所述物理上行信道信号的优先级, 调整所述 PRACH信号的发送功 率, 或者调整所述 PRACH信号和所述物理上行信道信号的发送功率, 直到调整后的 总的发送功率小于或者等于终端设备的最大输出功率。
在一个实施例中, 所述物理上行信道信号为一种, 第二处理单元 126包括: 第二判断模块 1261,其判断所述终端设备的最大输出功率能否满足优先级高的信 号的发送功率;
第三处理模块 1262, 其在所述第二判断模块 1261判断为是时, 满足优先级高的 信号的发送功率, 将剩余的发送功率分配给优先级低的信号;
第四处理模块 1263, 其在所述第二判断模块 1261判断为否时, 将优先级低的信 号的发送功率设为 0, 将剩余的发送功率分配给优先级高的信号。
在另外一个实施例中,所述物理上行信道信号为两种,该第二处理单元 124包括: 第五处理模块 1264, 其满足优先级最高的信号的发送功率;
第三判断模块 1265, 其在所述第五处理模块 1264处理后判断剩余的发送功率是 否满足优先级其次的信号的发送功率;
第六处理模块 1266, 其在所述第三判断模块 1265判断为是时, 满足所述优先级 其次的信号的发送功率, 然后将剩余的发送功率分配给优先级最低的信号;
第七处理模块 1267, 其在所述第三判断模块 1265判断为否时, 将优先级最低的 信号的发送功率设为 0, 将剩余的发送功率分配给优先级其次的信号。
在另外一个实施例中,所述物理上行信道信号为三种,该第二处理单元 124包括: 第八处理模块 1268, 其满足优先级最高的信号的发送功率;
第四判断模块 1269, 其在所述第八处理模块 1268处理后判断剩余的发送功率是 否满足优先级其次的信号的发送功率;
第九处理模块 12610,其在所述第四判断模块 1269判断为否时,将剩余的发送功 率分配所述优先级其次的信号, 将其余的信号的发送功率设为 0;
第十处理模块 12611, 其在所述第四判断模块 1269判断为是时, 满足所述优先级 其次的信号的发送功率;
第五判断模块 12612, 其在所述第十处理模块 12611处理后判断剩余的发送功率 是否满足优先级第三的信号;
第十一处理模块 12613, 其在所述第五判断模块 12612判断为是时, 满足优先级 第三的信号的发送功率, 然后将剩余的发送功率分配给优先级最低的信号; 第十二处理模块 12614, 其在所述第五判断模块 12612判断为否时, 将优先级最 低的信号的发送功率设为 0, 将剩余的发送功率分配给优先级第三的信号。
在本实施例中, 该物理上行信道信号可以包括以下信号的任意组合: 物理上行控 制信道 PUCCH信号, 带 UCI的物理上行共享信道 PUSCH信号, 不带 UCI的物理上 行共享信道 PUSCH信号。其中,该 PRACH信号、该 PUCCH信号、该带 UCI的 PUSCH 信号以及该不带 UCI的 PUSCH信号的优先级可以预先设定为: 所述 PRACH信号的 优先级小于所述不带 UCI的 PUSCH信号的优先级,所述不带 UCI的 PUSCH信号的 优先级小于所述带 UCI的 PUSCH信号的优先级,所述带 UCI的 PUSCH信号的优先 级小于所述 PUCCH信号的优先级。
通过本实施例的终端设备, 当需要在同一个 OFDM符号内在不同的服务小区上 同时发送 PRACH信号和 SRS信号时, 终端设备降低优先级相对较低的信号的发送 功率, 以确保总的发送功率小于或者等于该终端设备的最大输出功率。 由此解决了在 同一个 OFDM符号内, 终端设备需要同时发送 SRS信号和 PRACH信号可能导致的 发送功率总和大于最大配置输出功率的问题。进一步的, 当需要在同一个子帧内在一 个 SCell上发送 PRACH信号, 而在其他 Cell上发送物理上行信道信号时, 终端设备 可以根据该 PRACH信号和各物理上行信道信号的优先级, 确定功率控制策略, 保证 总的发送功率小于或者等于终端设备的最大输出功率, 由此为 Rel-11 中新出现终端 设备在功率受限的场景提供了一种切实可行的功率控制方法。
本发明实施例还提供了一种计算机可读程序, 其中当在终端设备中执行该程序 时, 该程序使得计算机在所述基站中执行实施例 1-实施例 4所述的功率控制方法。
本发明实施例还提供了一种存储有计算机可读程序的存储介质,其中该计算机可 读程序使得计算机在基站中执行实施例 1-实施例 4所述的功率控制方法。
本发明以上的装置和方法可以由硬件实现, 也可以由硬件结合软件实现。本发明 涉及这样的计算机可读程序, 当该程序被逻辑部件所执行时, 能够使该逻辑部件实现 上文所述的装置或构成部件, 或使该逻辑部件实现上文所述的各种方法或步骤。逻辑 部件例如现场可编程逻辑部件、微处理器、计算机中使用的处理器等。本发明还涉及 用于存储以上程序的存储介质, 如硬盘、 磁盘、 光盘、 DVD、 flash存储器等。
以上结合具体的实施方式对本发明进行了描述,但本领域技术人员应该清楚, 这 些描述都是示例性的, 并不是对本发明保护范围的限制。本领域技术人员可以根据本 发明的精神和原理对本发明做出各种变型和修改,这些变型和修改也在本发明的范围 内。

Claims

权 利 要 求 书
1、 一种功率控制方法, 其中, 所述方法包括:
当终端设备需要在同一个正交频分复用 OFDM符号内在一个次服务小区上发送 物理随机接入信道 PRACH信号, 在其他服务小区上发送上行探测参考信号 SRS时, 终端设备丢掉所述其他服务小区上的 SRS信号, 或者打掉所述次服务小区上与所述 其他服务小区上 SRS信号处于同一个 OFDM符号内的 PRACH信号的符号。
2、 根据权利要求 1所述的方法, 其中, 所述方法还包括:
当终端设备需要在同一个子帧内在一个次服务小区上发送 PRACH信号, 在其他 服务小区上发送物理上行信道信号时,如果所述终端设备的总的发送功率大于所述终 端设备的最大输出功率,则终端设备根据预先设定的所述 PRACH信号和所述物理上 行信道信号的优先级, 调整所述 PRACH信号和 /或所述物理上行信道信号的发送功 率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功率。
3、根据权利要求 2所述的方法, 其中, 终端设备根据预先设定的所述 PRACH信 号和所述物理上行信道信号的优先级,调整所述 PRACH信号和 /或所述物理上行信道 信号的发送功率, 包括:
如果所述物理上行信道信号为一种, 则终端设备判断所述 PRACH信号的优先级 和所述物理上行信道信号的优先级是否相同;
如果相同, 则终端设备等份额的降低所述 PRACH信号和所述物理上行信道信号 的发送功率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功率; 如果不同, 则终端设备先满足优先级高的信号的发送功率, 然后降低优先级低的 信号的发送功率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功 率。
4、根据权利要求 2所述的方法, 其中, 终端设备根据预先设定的所述 PRACH信 号和所述物理上行信道信号的优先级,调整所述 PRACH信号和 /或所述物理上行信道 信号的发送功率, 包括:
如果所述物理上行信道信号为两种, 则终端设备先满足优先级最高的信号的发送 功率, 然后判断剩余的两个信号的优先级是否相同;
如果剩余的两个信号的优先级相同, 则终端设备等份额的降低所述剩余的两个信 号的发送功率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功率; 如果剩余的两个信号的优先级不同, 则终端设备判断剩余发送功率是否满足优先 级其次的信号的发送功率;
如果能满足优先级其次的信号的发送功率, 则终端设备满足优先级其次的信号的 发送功率, 降低优先级最低的信号的发送功率, 直到调整后的总的发送功率小于或者 等于终端设备的最大输出功率;
如果不能满足优先级其次的信号的发送功率, 则终端设备将优先级最低的信号的 发送功率设为 0, 将剩余的发送功率分配给优先级其次的信号。
5、根据权利要求 2所述的方法, 其中, 终端设备根据预先设定的所述 PRACH信 号和所述物理上行信道信号的优先级,调整所述 PRACH信号和 /或所述物理上行信道 信号的发送功率, 包括:
如果所述物理上行信道信号为三种, 则终端设备先满足优先级最高的信号的发送 功率, 然后判断是否满足优先级其次的信号的发送功率;
如果不能满足优先级其次的信号的发送功率, 则终端设备将剩余的发送功率分配 给优先级其次的信号, 将其他信号的发送功率设为 0;
如果能满足优先级其次的信号的发送功率, 则终端设备满足优先级其次的信号的 发送功率, 然后判断剩余的两个信号的优先级是否相同;
如果剩余的两个信号的优先级相同, 则终端设备等份额的降低所述剩余的两个信 号的发送功率, 直到调整后的总的发送功率小于或者等于终端设备的最大输出功率; 如果剩余的两个信号的优先级不同, 则终端设备判断剩余发送功率是否满足所述 剩余的两个信号中优先级较高的信号的发送功率;
如果能满足所述优先级较高的信号的发送功率, 则终端设备满足所述优先级较高 的信号的发送功率, 降低优先级最低的信号的发送功率, 直到调整后的总的发送功率 小于或者等于终端设备的最大输出功率;
如果不能满足所述优先级较高的信号的发送功率, 则终端设备将优先级最低的信 号的发送功率设为 0, 将剩余的发送功率分配给所述优先级较高的信号。
6、根据权利要求 2-5任意一项所述的方法, 其中, 所述物理上行信道信号包括以 下信号的任意组合: 物理上行控制信道 PUCCH信号, 带 UCI的物理上行共享信道 PUSCH信号, 不带 UCI的物理上行共享信道 PUSCH信号。
7、 根据权利要求 6所述的方法, 其中, 所述 PRACH信号、 所述 PUCCH信号、 所述带 UCI的 PUSCH信号以及所述不带 UCI的 PUSCH信号的优先级为:
所述不带 UCI的 PUSCH信号的优先级小于等于所述 PRACH信号的优先级, 所 述 PRACH信号的优先级小于带 UCI的 PUSCH信号的优先级,所述带 UCI的 PUSCH 信号的优先级小于所述 PUCCH信号的优先级。
8、 一种功率控制方法, 其中, 所述方法包括:
当终端设备需要在同一个正交频分复用 OFDM符号内在一个次服务小区上发送 物理随机接入信道 PRACH信号, 在其他服务小区上发送上行探测参考信号 SRS时, 如果所述终端设备的总的发送功率大于所述终端设备的最大输出功率,则终端设备根 据所述 PRACH信号和所述 SRS信号的优先级, 调整所述 PRACH信号和所述 SRS 信号的发送功率。
9、根据权利要求 8所述的方法, 其中, 所述 PRACH信号的优先级小于所述 SRS 信号的优先级, 则所述终端设备根据所述 PRACH信号和所述 SRS信号的优先级, 调整所述 PRACH信号和所述 SRS信号的发送功率, 包括:
终端设备判断所述终端设备的最大输出功率是否能满足所述 SRS 信号的发送功 率;
如果所述终端设备的最大输出功率能满足所述 SRS信号的发送功率,则终端设备 满足所述 SRS信号的发送功率, 将剩余的发送功率分配给所述 PRACH信号;
如果所述终端设备的最大输出功率不能满足所述 SRS信号的发送功率,则终端设 备将所述 PRACH信号的发送功率设为 0, 将所述最大输出功率等份额的分配给所有 SRS信号。
10、 根据权利要求 8所述的方法, 其中, 所述方法还包括:
当终端设备需要在同一个子帧内在一个次服务小区上发送 PRACH信号, 在其他 服务小区上发送物理上行信道信号时,如果终端设备的总的发送功率大于终端设备的 最大输出功率,则终端设备根据预先设定的所述 PRACH信号和所述物理上行信道信 号的优先级, 调整所述 PRACH信号的发送功率, 或者调整所述 PRACH信号和所述 物理上行信道信号的发送功率,直到调整后的总的发送功率小于或者等于终端设备的 最大输出功率。
11、 根据权利要求 10所述的方法, 其中, 终端设备根据预先设定的所述 PRACH 信号和所述物理上行信道信号的优先级, 调整所述 PRACH信号的发送功率, 或者调 整所述 PRACH信号和所述物理上行信道信号的发送功率, 包括:
如果所述物理上行信道信号为一种, 则终端设备判断所述终端设备的最大输出功 率能否满足优先级高的信号的发送功率;
如果能满足优先级高的信号的发送功率, 则终端设备满足优先级高的信号的发送 功率, 将剩余的发送功率分配给优先级低的信号;
如果不能满足优先级高的信号的发送功率, 则终端设备将优先级低的信号的发送 功率设为 0, 将剩余的发送功率分配给优先级高的信号。
12、根据权利要求 10所述的方法,终端设备根据预先设定的所述 PRACH信号和 所述物理上行信道信号的优先级, 调整所述 PRACH信号的发送功率, 或者调整所述
PRACH信号和所述物理上行信道信号的发送功率, 包括:
如果所述物理上行信道信号为两种, 则终端设备先满足优先级最高的信号的发送 功率, 然后判断剩余的发送功率是否满足优先级其次的信号的发送功率;
如果满足优先级其次的信号的发送功率, 则终端设备满足所述优先级其次的信号 的发送功率, 然后将剩余的发送功率分配给优先级最低的信号;
如果不能满足优先级其次的信号的发送功率, 则终端设备将优先级最低的信号的 发送功率设为 0, 将剩余的发送功率分配给优先级其次的信号。
13、根据权利要求 10所述的方法,终端设备根据预先设定的所述 PRACH信号和 所述物理上行信道信号的优先级, 调整所述 PRACH信号的发送功率, 或者调整所述 PRACH信号和所述物理上行信道信号的发送功率, 包括:
如果所述物理上行信道信号为三种, 则终端设备先满足优先级最高的信号的发送 功率, 然后判断剩余的发送功率是否满足优先级其次的信号的发送功率;
如果不能满足优先级其次的信号的发送功率, 则终端设备将剩余的发送功率分配 所述优先级其次的信号, 将其余的信号的发送功率设为 0;
如果满足优先级其次的信号的发送功率, 则终端设备满足所述优先级其次的信号 的发送功率, 然后判断剩余的发送功率是否满足优先级第三的信号;
如果能满足优先级第三的信号的发送功率, 则终端设备满足优先级第三的信号的 发送功率, 然后将剩余的发送功率分配给优先级最低的信号;
如果不能满足优先级第三的信号的发送功率, 则终端设备将优先级最低的信号的 发送功率设为 0, 将剩余的发送功率分配给优先级第三的信号。
14、 根据权利要求 10-13任意一项所述的方法, 其中, 所述物理上行信道信号包 括以下信号的任意组合:物理上行控制信道 PUCCH信号,带 UCI的物理上行共享信 道 PUSCH信号, 不带 UCI的物理上行共享信道 PUSCH信号。
15、根据权利要求 14所述的方法,其中,所述 PRACH信号、所述 PUCCH信号、 所述带 UCI的 PUSCH信号以及所述不带 UCI的 PUSCH信号的优先级为:
所述 PRACH信号的优先级小于所述不带 UCI的 PUSCH信号的优先级, 所述不 带 UCI的 PUSCH信号的优先级小于所述带 UCI的 PUSCH信号的优先级, 所述带 UCI的 PUSCH信号的优先级小于所述 PUCCH信号的优先级。
16、 一种终端设备, 其中, 所述终端设备包括:
第一确定单元, 其确定终端设备是否需要在同一个正交频分复用 OFDM符号内 在一个次服务小区上发送物理随机接入信道 PRACH信号,在其他服务小区上发送上 行探测参考信号 SRS;
第一处理单元, 其在所述第一确定单元确定为是时, 丢掉所述其他服务小区上的 SRS信号, 或者打掉所述次服务小区上与所述其他服务小区上 SRS信号处于同一个 OFDM符号内的 PRACH信号的符号。
17、 根据权利要求 16所述的终端设备, 其中, 所述终端设备还包括:
第二确定单元, 其确定终端设备是否需要在同一个子帧内在一个次服务小区上发 送 PRACH信号, 在其他服务小区上发送物理上行信道信号;
第二处理单元, 其在所述第二确定单元确定为是时, 在总的发送功率大于最大输 出功率时, 根据预先设定的所述 PRACH信号和所述物理上行信道信号的优先级, 调 整所述 PRACH信号和 /或所述物理上行信道信号的发送功率,直到调整后的总的发送 功率小于或者等于终端设备的最大输出功率。
18、 根据权利要求 17所述的终端设备, 其中, 在所述物理上行信道信号为一种 时, 所述第二处理单元包括:
第一判断模块, 其判断所述 PRACH信号的优先级和所述物理上行信道信号的优 先级是否相同;
第一处理模块, 其在所述第一判断模块判断为是时, 等份额的降低所述 PRACH 信号和所述物理上行信道信号的发送功率,直到调整后的总的发送功率小于或者等于 终端设备的最大输出功率;
第二处理模块, 其在所述第一判断模块判断为否时, 先满足优先级高的信号的发 送功率,然后降低优先级低的信号的发送功率, 直到调整后的总的发送功率小于或者 等于终端设备的最大输出功率。
19、 根据权利要求 17所述的终端设备, 其中, 所述物理上行信道信号为两种时, 所述第二处理单元还包括:
第三处理模块, 其在满足优先级最高的信号的发送功率;
第二判断模块, 其在所述第三处理模块处理之后判断剩余的两个信号的优先级是 否相同;
第四处理模块, 其在所述第二判断模块判断为是时, 等份额的降低所述剩余的两 个信号的发送功率,直到调整后的总的发送功率小于或者等于终端设备的最大输出功 率;
第三判断模块, 其在所述第二判断模块判断为否时, 判断剩余发送功率是否满足 优先级其次的信号的发送功率;
第五处理模块, 其在所述第三判断模块判断为是时, 满足优先级其次的信号的发 送功率, 降低优先级最低的信号的发送功率, 直到调整后的总的发送功率小于或者等 于终端设备的最大输出功率;
第六处理模块, 其在所述第三判断模块判断为否时, 将优先级最低的信号的发送 功率设为 0, 将剩余的发送功率分配给优先级其次的信号。
20、 根据权利要求 17所述的终端设备, 其中, 在所述物理上行信道信号为三种 时, 所述第二处理单元包括:
第七处理模块, 其满足优先级最高的信号的发送功率;
第四判断模块, 其在所述第七处理模块处理之后判断是否满足优先级其次的信号 的发送功率;
第八处理模块, 其在所述第四判断模块判断为否时, 将剩余的发送功率分配给优 先级其次的信号, 将其他信号的发送功率设为 0;
第九处理模块, 其在所述第四判断模块判断为是时, 满足优先级其次的信号的发 送功率;
第五判断模块, 其在所述第九处理模块处理之后判断剩余的两个信号的优先级是 否相同;
第十处理模块, 其在所述第五判断模块判断为是时, 则等份额的降低所述剩余的 两个信号的发送功率,直到调整后的总的发送功率小于或者等于终端设备的最大输出 功率;
第六判断模块, 其在所述第五判断模块判断为否时, 判断剩余发送功率是否满足 所述剩余的两个信号中优先级较高的信号的发送功率;
第十一处理模块, 其在所述第六判断模块判断为是时满足所述优先级较高的信号 的发送功率, 降低优先级最低的信号的发送功率, 直到调整后的总的发送功率小于或 者等于终端设备的最大输出功率;
第十二处理模块, 其在所述第六判断模块判断为否时, 将优先级最低的信号的发 送功率设为 0, 将剩余的发送功率分配给所述优先级较高的信号。
21、 一种终端设备, 其中, 所述终端设备包括:
第一确定单元, 其确定所述终端设备是否需要在同一个正交频分复用 OFDM符 号内在一个次服务小区上发送物理随机接入信道 PRACH信号,在其他服务小区上发 送上行探测参考信号 SRS;
第一判断单元, 其在所述第一确定单元确定为是时, 判断总的发送功率是否大于 终端设备的最大输出功率;
第一处理单元, 其在所述第一判断单元判断为是时, 根据所述 PRACH信号和所 述 SRS信号的优先级, 调整所述 PRACH信号和所述 SRS信号的发送功率。
22、 根据权利要求 21所述的终端设备, 其中, 所述第一处理单元包括: 第一判断模块,其判断所述终端设备的最大输出功率是否能满足所述 SRS信号的 发送功率;
第一处理模块,其在所述第一判断模块判断为是时,满足所述 SRS信号的发送功 率, 将剩余的发送功率分配给所述 PRACH信号;
第二处理模块, 其在所述第一判断模块判断为否时, 将所述 PRACH信号的发送 功率设为 0, 将所述最大输出功率等份额的分配给所有 SRS信号。
23、 根据权利要求 21所述的终端设备, 其中, 所述终端设备还包括: 第二确定单元, 其确定所述终端设备是否需要在同一个子帧内在一个次服务小区 上发送 PRACH信号, 在其他服务小区上发送物理上行信道信号; 第二判断单元, 其在所述第二确定单元确定为是时, 判断总的发送功率是否大于 终端设备的最大输出功率;
第二处理单元,其在所述第二判断单元判断为是时,根据预先设定的所述 PRACH 信号和所述物理上行信道信号的优先级, 调整所述 PRACH信号的发送功率, 或者调 整所述 PRACH信号和所述物理上行信道信号的发送功率,直到调整后的总的发送功 率小于或者等于终端设备的最大输出功率。
24、 根据权利要求 23所述的终端设备, 其中, 在所述物理上行信道信号为一种 时, 所述第二处理单元包括:
第二判断模块, 其判断所述终端设备的最大输出功率能否满足优先级高的信号的 发送功率;
第三处理模块, 其在所述第二判断模块判断为是时, 满足优先级高的信号的发送 功率, 将剩余的发送功率分配给优先级低的信号;
第四处理模块, 其在所述第二判断模块判断为否时, 将优先级低的信号的发送功 率设为 0, 将剩余的发送功率分配给优先级高的信号。
25、 根据权利要求 23所述的终端设备, 其中, 在所述物理上行信道信号为两种 时, 所述第二处理单元包括:
第五处理模块, 其满足优先级最高的信号的发送功率;
第三判断模块, 其在所述第五处理模块处理后判断剩余的发送功率是否满足优先 级其次的信号的发送功率;
第六处理模块, 其在所述第三判断模块判断为是时, 满足所述优先级其次的信号 的发送功率, 然后将剩余的发送功率分配给优先级最低的信号;
第七处理模块, 其在所述第三判断模块判断为否时, 将优先级最低的信号的发送 功率设为 0, 将剩余的发送功率分配给优先级其次的信号。
26、 根据权利要求 21所述的终端设备, 其中, 在所述物理上行信道信号为三种 时, 所述第二处理单元包括:
第八处理模块, 其满足优先级最高的信号的发送功率;
第四判断模块, 其在所述第八处理模块处理后判断剩余的发送功率是否满足优先 级其次的信号的发送功率;
第九处理模块, 其在所述第四判断模块判断为否时, 将剩余的发送功率分配所述 优先级其次的信号, 将其余的信号的发送功率设为 0;
第十处理模块, 其在所述第四判断模块判断为是时, 满足所述优先级其次的信号 的发送功率;
第五判断模块, 其在所述第十处理模块处理后判断剩余的发送功率是否满足优先 级第三的信号;
第十一处理模块, 其在所述第五判断模块判断为是时, 满足优先级第三的信号的 发送功率, 然后将剩余的发送功率分配给优先级最低的信号;
第十二处理模块, 其在所述第五判断模块判断为否时, 将优先级最低的信号的发 送功率设为 0, 将剩余的发送功率分配给优先级第三的信号。
27、 一种计算机可读程序, 其中当在终端设备中执行该程序时, 该程序使得计算 机在所述基站中执行如权利要求 1-15任意一项所述的功率控制方法。
28、 一种存储有计算机可读程序的存储介质, 其中该计算机可读程序使得计算机 在基站中执行如权利要求 1-15任意一项所述的功率控制方法。
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