WO2013078946A1 - D2d的功率控制方法、用户设备、基站和通讯系统 - Google Patents

D2d的功率控制方法、用户设备、基站和通讯系统 Download PDF

Info

Publication number
WO2013078946A1
WO2013078946A1 PCT/CN2012/084553 CN2012084553W WO2013078946A1 WO 2013078946 A1 WO2013078946 A1 WO 2013078946A1 CN 2012084553 W CN2012084553 W CN 2012084553W WO 2013078946 A1 WO2013078946 A1 WO 2013078946A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
transmit power
adjustment
reference signal
power
Prior art date
Application number
PCT/CN2012/084553
Other languages
English (en)
French (fr)
Inventor
戴明增
曾清海
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP12854055.6A priority Critical patent/EP2770786B1/en
Publication of WO2013078946A1 publication Critical patent/WO2013078946A1/zh
Priority to US14/289,081 priority patent/US20140274196A1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • 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
    • H04W52/383TPC being performed in particular situations power control in peer-to-peer links
    • 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
    • H04W52/386TPC being performed in particular situations centralized, e.g. when the radio network controller or equivalent takes part in the power control

Definitions

  • the present invention relates to communication technologies, and in particular, to a D2D power control method, a user equipment, a base station, and a communication system. Background technique
  • the transmitting UE periodically sends a power headroom report (Power Headroom Report, PHR for short) to the base station, and the difference between the uplink transmit power and the maximum transmit power of the UE, that is, the power headroom (Power) Headroom, referred to as PH), so that the base station adjusts the transmit power of the UE according to the PH.
  • PHR Power Headroom Report
  • PH power headroom
  • the UE needs to consider the uplink path loss to compensate the path loss in the channel.
  • D2D Device-to-device
  • An aspect of the present invention provides a D2D power control method, where the method includes: receiving, by a first user equipment UE, path loss information sent by a base station, or a reference signal sent by a second UE;
  • the first UE receives power adjustment information sent by the base station according to the detection control information, and adjusts a transmit power of the first UE according to the power adjustment information.
  • Another aspect of the present invention provides a D2D power control method, including:
  • the second UE sends detection control information to the base station according to the adjusted reference value, where the base station sends power adjustment information to the first UE according to the detection control information, and the first UE is configured according to the power. Adjusting information to adjust a transmit power of the first UE;
  • the transmit power of the first UE is obtained by the first UE according to the path loss information sent by the base station or the reference signal sent by the second UE.
  • Another aspect of the present invention provides a D2D power control method, including: The base station sends the path loss information to the first user equipment UE, or sends the indication information of the reference signal to the first UE and the second UE;
  • the base station receives the detection control information that is sent by the second UE according to the adjusted reference value; and the base station sends power adjustment information to the first UE according to the detection control information, where the power adjustment information is used by the The first UE adjusts the transmit power of the first UE, where the adjustment reference value is obtained by the second UE according to the data sent by the first UE based on the transmit power of the first UE;
  • the indication information is used to indicate that the first UE receives the reference signal sent by the second UE, or is used to instruct the second UE to send the reference signal to the first UE.
  • a further aspect of the present invention provides a user equipment (UE), comprising: a processor, configured to receive path loss information sent by a base station, or a reference signal sent by a second user equipment UE, and obtain the reference signal according to the path loss information or a reference signal.
  • Transmitting a transmitter, configured to send data to the second UE according to the transmit power of the UE, where the second UE acquires an adjustment reference value according to the data, and according to the adjustment reference The value is sent to the base station to send the detection control information, where the processor is further configured to receive the power adjustment information that is sent by the base station according to the detection control information, and adjust the transmit power of the UE according to the power adjustment information.
  • a further aspect of the present invention provides a user equipment UE, including: a processor, configured to receive data sent by a first UE based on a transmit power of the first UE, and obtain an adjustment reference value; The adjustment reference value sends the detection control information to the base station, where the base station sends power adjustment information to the first UE according to the detection control information, and the first UE is configured according to the power adjustment information. Adjusting the transmit power of a UE; The transmit power of the first UE is obtained by the first UE according to the path loss information sent by the base station or a reference signal sent by the UE.
  • a base station including:
  • a transmitter configured to send path loss information to the first user equipment UE, or send indication information of the reference signal to the first UE and the second UE; and the receiver is configured to receive detection control information that is sent by the second UE according to the adjusted reference value.
  • the adjustment reference value is obtained by the second UE according to the data sent by the first UE based on the transmit power of the first UE;
  • a processor configured to send power adjustment information to the first UE according to the detection control information, where the power adjustment information is used by the first UE to adjust a transmit power of the first UE, where the indication The information is used to indicate that the first UE receives the reference signal sent by the second UE, or is used to instruct the second UE to send the reference signal to the first UE.
  • a communication system comprising: a user equipment according to the present invention, and another user equipment according to the present invention.
  • the D2D power control method, the user equipment, the base station, and the communication system of the present invention receive the path loss information sent by the base station or the reference signal sent by the second UE by using the first UE, thereby acquiring the first according to the path loss information or the reference signal.
  • the transmit power of a UE is adjusted according to the power adjustment information sent by the base station, thereby solving the problem that the D2D cannot adjust the transmit power of the first UE in the prior art, and the power of the first UE in the D2D is realized. control. DRAWINGS
  • FIG. 1 is a schematic diagram of a D2D system architecture applied to a D2D power control method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a D2D power control method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another embodiment of a D2D power control method according to the present invention
  • FIG. 4 is a schematic flowchart of another embodiment of a D2D power control method according to the present invention
  • FIG. 6 is a schematic diagram of signaling of a power control method for a D2D according to another embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of another embodiment of a UE according to the present invention.
  • FIG. 9 is a schematic structural diagram of an embodiment of a base station according to the present invention. detailed description
  • the embodiment of the present invention is applied to a D2D system, and the D2D system can be applied to various systems, such as Long Term Evolution (LTE) and 2G/3G networks.
  • LTE Long Term Evolution
  • 2G/3G networks Taking the LTE scenario as an example, refer to FIG. 1 , where UE1 and the network side base station base station communicate, UE2 and UE3 communicate directly, and the above two types of communication can use the same spectrum resource; the direct communication mode between the UE2 and the UE3 is D2D communication. In this manner, the spectrum resources used by UE2 and UE3 are allocated by the base station.
  • the UE2 in FIG. 1 is defined as a transmitting UE, which is simply referred to as a first UE, and the UE3 in FIG. 1 is defined as a receiving UE, referred to as a second UE.
  • the first UE may send data to the second UE.
  • Embodiment 1 An embodiment of the power control method of the D2D of the present invention is as shown in FIG. 2, and includes:
  • the first UE receives the path loss information sent by the base station, or the reference signal sent by the second UE, and acquires the transmit power of the first UE according to the path loss information or the reference signal.
  • the reference signal may be a Sounding Reference Signal (SRS) or a Demodulation Reference Signal (DM-RS).
  • the base station may send configuration parameters corresponding to the reference signal to the first UE and the second UE, for example, to send configuration parameters (for example, SRS) for indicating to send the SRS to the second UE. Bandwidth, frequency domain location, etc.), the second UE may send an SRS according to these configuration parameters.
  • the base station may send configuration parameters (eg, SRS bandwidth, frequency domain location, etc.) for indicating the SRS to the first UE, and optionally include receiving an SRS indication, and the first UE may receive the SRS according to the configuration parameters.
  • the first UE may obtain the received power of the signal; the transmit power of the signal may be sent by the second UE or the base station to the first UE.
  • the first UE may obtain a path loss by calculating a difference between the received power and the transmit power, where the path loss is a path loss between the first UE and the second UE. At this time, the first UE may calculate the transmission power according to the path loss.
  • the first UE may also receive the path loss information sent by the base station, where the path loss information may be the reference path loss sent by the base station or the transmit power of the first UE.
  • the first UE may receive the sent by the base station.
  • the path loss information may be a reference path loss (also referred to as an initial path loss), and the first UE may calculate its own transmit power according to the reference path loss.
  • the first UE also receives the transmit power sent by the base station, and uses the transmit power as the transmit power for transmitting data. At this time, the first UE no longer needs to calculate the transmit power according to the path loss information, but may directly The base station obtains the transmit power.
  • the first UE sends data to the second UE by using the transmit power of the first UE.
  • the first UE uses the transmit power obtained in 201 to send data to the second UE.
  • the UE may obtain an adjustment reference value according to the data, where the adjustment reference value includes, for example, a signal to interference plus noise ratio/Block Error Ratio (SINR/).
  • SINR/BLER in the embodiment of the present invention represents: SINR or BLER.
  • the SINR/BLER may be referred to as a signal to noise ratio/block error rate.
  • the adjustment reference value may also be other parameters. The value is set according to the specific method.
  • the second UE may further send the detection control information to the base station according to the adjusted reference value.
  • the detection control information may be a request that is sent by the second UE according to the adjustment reference value to increase or decrease the transmit power of the first UE.
  • the detection control information may also carry the adjustment reference value to report to the base station. Therefore, the base station can determine whether to increase or decrease the transmit power of the first UE according to the reported adjusted reference value.
  • the adjustment reference value may be, for example, SINR/BLER, and the second UE may determine, according to the SINR/BLER, whether to increase or decrease the transmit power of the first UE, and set the SINR/BLER threshold to the SINR/BLER threshold. The value is compared.
  • the SINR/BLER threshold may include a low threshold and a high threshold. If the SINR/BLER is lower than the lower threshold, it indicates that the transmit power of the first UE needs to be increased. If the SINR/BLER is higher than the high threshold, it indicates that the SINR/BLER is higher than the high threshold. It is desirable to reduce the transmit power of the first UE.
  • the base station sends the SINR/BLER threshold to the second UE in advance.
  • the first UE receives power adjustment information that is sent by the base station according to the detection control information, and adjusts a transmit power of the first UE according to the power adjustment information.
  • the first UE may receive the power adjustment information sent by the base station, where the power adjustment information is obtained by the base station according to the detection control information sent by the second UE. For example, if the base station needs to increase the transmit power of the first UE according to the detection control information, the base station will increase the transmit power of the first UE.
  • the power adjustment information may include a power adjustment value/compensation value, and an adjustment.
  • the first UE may adjust the transmit power according to the power adjustment information. After adjusting the transmit power, the first UE will retransmit the data by using the adjusted power, and the second UE will again calculate the adjusted reference value of the data, and evaluate whether the power adjustment is appropriate, and repeatedly execute 202-203 of this embodiment. , until the transmit power is adjusted to reach the appropriate adjustment reference.
  • the first UE receives the path loss information sent by the base station or the reference signal sent by the second UE, and acquires the transmit power of the first UE according to the path loss information or the reference signal; and the base station can The second UE obtains the power adjustment information according to the detection control information sent by the adjustment value, and sends the power adjustment information to the first UE, thereby solving the problem that the D2D cannot adjust the power of the first UE in the prior art, and implements the sending in the D2D. Power control of the UE.
  • Embodiment 2 Another embodiment of the power control method for D2D of the present invention is as shown in FIG. 3, and includes:
  • the second UE receives data sent by the first UE according to the transmit power of the first UE, and obtains an adjustment reference value.
  • the transmit power used by the first UE is obtained by the first UE according to the path loss information sent by the base station or the reference signal sent by the second UE.
  • the second UE sends the configuration parameter that is sent by the base station to indicate that the reference signal is sent, and sends the configuration parameter according to the configuration parameter.
  • Reference signal is, for example, an SRS or a DM-RS.
  • the first UE may obtain the received power of the reference signal.
  • the second UE or the base station may further send the transmit power of the reference signal to the first UE.
  • the path loss between the first UE and the second UE is obtained by the difference between the received power and the transmit power of the reference signal, and the transmit power is calculated according to the path loss.
  • the second UE sends the detection control information to the base station according to the adjusted reference value.
  • the second UE before receiving the data sent by the first UE by using the transmit power, the second UE further receives an adjustment reference value sent by the base station, for example, a threshold value or a reporting period of the SINR/BLER; for example, a threshold of the adjusted reference value
  • the value includes a first threshold value and a second threshold value, and the first threshold value is less than the second threshold value.
  • the adjustment reference value includes a first adjustment reference value and a second adjustment reference value, where the first adjustment reference value includes at least one of the following: a signal to interference plus noise ratio SINR of the data, a block error rate BLER, and a second
  • the adjustment reference value includes at least one of the following: SINR threshold, BLER threshold.
  • the second adjustment reference value is the first threshold value or the second threshold value, and the first threshold value is smaller than the second threshold value; the second UE sends the detection control information to the base station according to the adjustment reference value, Specifically, the second UE compares the first adjustment reference value with the second adjustment reference value; if the first adjustment reference value is smaller than the first threshold, the second UE sends a request to the base station to request to increase the transmission of the first UE.
  • the detection control information of the power if the first adjustment reference value is greater than the second threshold, the second UE sends, to the base station, detection control information for requesting to reduce the transmission power of the first UE.
  • the first adjustment reference value is SINR/BLER
  • the second adjustment reference value is a SINR/BLER threshold value, which may be a first threshold value or a second threshold value
  • the base station sends the detection control information, specifically: the second UE compares the SINR/BLER with the SINR/BLER threshold; if the SINR/BLER is less than the first threshold, or the SINR/BLER is greater than the second threshold, or arrives
  • the SINR/BLER is directly reported to the base station in the detection control information
  • the base station compares the SINR/BLER with the stored SINR/BLER threshold value to determine whether to increase or decrease the transmission of the first UE. power.
  • the base station obtains the power adjustment information and sends the power adjustment information to the first UE according to the detection control information, for example, if it is determined that the transmission power of the first UE needs to be increased, the power adjustment information may include a power compensation value, etc., and the first UE according to the power Adjust the information to adjust its transmit power.
  • the first UE receives the path loss information sent by the base station or the reference signal sent by the second UE, and acquires the transmit power of the first UE according to the path loss information or the reference signal, and the base station can
  • the second UE obtains the power adjustment information according to the detection control information sent by the adjustment value, and sends the power adjustment information to the first UE, thereby solving the problem that the D2D cannot adjust the power of the first UE in the prior art, and implements the sending in the D2D.
  • Power control of the UE Embodiment 3
  • a further embodiment of the power control method of the D2D of the present invention is as shown in FIG. 4, and includes:
  • the base station sends path loss information to the first user equipment UE, or sends indication information of the reference signal to the first UE and the second UE.
  • the indication information is used to indicate that the first UE receives the reference signal sent by the second UE, or is used to instruct the second UE to send the reference signal to the first UE.
  • the base station receives detection control information that is sent by the second UE according to the adjusted reference value.
  • the adjustment reference value is obtained by the second UE according to the data sent by the first UE using the transmit power, and the transmit power is obtained by the first UE according to the path loss information sent by the base station or the reference signal sent by the second UE.
  • the reference information sent by the base station may be the transmit power sent by the base station to the first UE, where the first UE may send data based on the transmit power; or the path loss information may be the base station
  • the reference path loss sent by the UE the first UE may obtain the transmit power according to the reference path loss calculation. After obtaining the transmit power, the first UE may use the transmit power to send data to the second UE.
  • the base station may send, to the second UE, a configuration parameter, configured to send the reference signal, and send, to the first UE, an indication for receiving the reference signal.
  • the second UE may send the reference according to corresponding configuration parameters
  • the first UE may receive the reference signal according to a corresponding configuration parameter.
  • the reference signal can be an SRS or a DM-RS.
  • the first UE may obtain a path loss between the second UE and the second UE according to the received power and the transmit power of the reference signal, and calculate the transmit power according to the path loss.
  • the second UE may obtain an adjustment reference value, and obtain detection control information according to the adjusted reference value.
  • the adjustment reference value includes a first adjustment reference value, a second adjustment reference value, where the first adjustment reference value is, for example, SINR/BLER, and the second adjustment reference value is a first threshold value or a second threshold value, the first threshold
  • the limit value is less than the second threshold; the base station may also send a reporting period to the second UE.
  • the detection control information sent by the second UE according to the adjusted reference value for example, when the first adjustment reference value is less than the first threshold, or when the first adjustment reference value is greater than the second threshold, or When the reporting period is reached, the detection control information is sent, and the detection control information is used to report the first adjustment reference value to the base station.
  • the detection control information that is sent by the second UE according to the adjustment reference value for example, when the first adjustment reference value is less than the first threshold, sending detection control information for requesting to increase the transmit power of the first UE;
  • the detection control information for requesting reduction of the transmission power of the first UE is transmitted.
  • the base station sends power adjustment information to the first UE according to the detection control information.
  • the base station determines, according to the adjusted reference value and the adjusted reference threshold value stored by the base station, whether to increase or decrease the transmit power to the first UE, when receiving the detection control information of the reported adjustment reference value sent by the second UE;
  • the adjustment reference threshold includes a first threshold and a second threshold, where the first threshold is less than the second threshold; optionally, for example, adjusting the reference value to SINR/BLER;
  • the base station compares the SINR/BLER with the SINR/BLER threshold, and if the SINR/BLER is smaller than the first threshold, the indication for increasing the transmit power of the first UE is obtained, and according to the increase Instructing and the power headroom of the first UE, sending power adjustment information to the first UE; if the SINR/BLER is greater than Referring to the second threshold, the indication for reducing the transmission power of the first UE is obtained, and the power adjustment information is sent to the first UE according
  • the power adjustment information may include a reference path loss compensation value, and/or an adjusted path loss value, so that the first UE is compensated according to the reference path loss value and/or the adjusted path loss value. Adjust the transmit power.
  • the stated and/or meaning is that either may exist alone or only one of them may exist.
  • the first UE receives the path loss information sent by the base station or the reference signal sent by the second UE, and acquires the transmit power of the first UE according to the path loss information or the reference signal; and the base station can
  • the second UE obtains the power adjustment information according to the detection control information sent by the adjustment value, and sends the power adjustment information to the first UE, thereby solving the problem that the D2D cannot adjust the power of the first UE in the prior art, and implements the sending in the D2D. Power control of the UE.
  • the first UE may send the power report information to the base station, so that the base station obtains the power headroom of the first UE according to the power report information, and comprehensively according to the second
  • the detection control information sent by the UE and the power headroom are used for power adjustment of the first UE.
  • the first UE sends the power report information to the base station, which may be the following two situations:
  • the base station may know the transmit power of the first UE.
  • the base station directly transmits the transmit power to the first UE, and the base station knows the transmit power of the first UE.
  • the base station can also learn the first UE according to the path loss. Transmit power.
  • the first UE only needs to report its own maximum transmit power to the base station, and the base station can calculate the power headroom of the first UE according to the maximum transmit power and the transmit power of the first UE.
  • the first UE acquires the transmit power according to the reference signal sent by the second UE, since the first UE calculates the path loss itself and obtains the transmit power according to the path loss, this is The base station does not know the transmit power of the first UE, and the first UE needs to directly report the power headroom to the base station; the power headroom may be obtained by calculating, by the first UE, the difference between the maximum transmit power of the UE and the transmit power.
  • the reporting of the first UE may be configured in a manner that triggers the timer triggering.
  • the base station may configure three parameters of a power consumption residual reporting timer ( rohibit PHR-timer ), a periodic power head up timer ( periodic PHR-timer ), and a path loss change value threshold ( Pathloss — D2DChange ), and These three parameters are sent to the first UE for configuration.
  • the first UE may start the foregoing timer, and the timer expires when the power margin is disabled, and the difference between the calculated path loss and the path loss of the last reported base station is greater than the set path loss value threshold.
  • the power headroom is reported to the base station, and the power headroom is reported to the base station when the periodic power headroom reporting timer expires.
  • the power control method of the D2D is described in more detail by a specific example; and, the two methods of reporting the power headroom described above are They are also explained separately.
  • Embodiment 4 The power control method of the D2D of the present invention is further illustrated as shown in FIG. 5.
  • the first UE obtains the transmit power according to the reference signal sent by the base station, and the first UE directly reports the maximum transmit power thereof.
  • the base station obtains a power headroom; the method may include:
  • the base station sends a desired SINR/BLER threshold to the second UE.
  • the SINR/BLER threshold may correspond to a service type or a bearer level, that is, the data sent by the first UE to the second UE may correspond to different service types, or the bearer channel that sends the data corresponds to a specific bearer. Level, when the second UE evaluates the reception of the data, it needs to use the SINR/BLER threshold corresponding to the service type or bearer level of the data.
  • the SINR/BLER threshold may also correspond to other parameters, such as QoS Class Identifier (QCI), etc., which are not enumerated here.
  • QCI QoS Class Identifier
  • the foregoing SINR/BLER threshold may include a low threshold (which may be referred to as a first threshold) and a high threshold (which may be referred to as a second threshold).
  • the purpose of setting the two thresholds is that the second UE may compare the SINR/BLER of the evaluated data with the foregoing two thresholds, if the SINR/BLER is located at a low threshold and a high threshold. If the SINR/BLER is less than the low threshold or greater than the high threshold, the SINR/BLER may be considered unreasonable.
  • the transmit power of the transmitting UE needs to be adjusted.
  • the base station may send a desired SINR/BLER threshold to the second UE by using system information or RRC dedicated signalling.
  • the base station sends path loss information, for example, a reference path loss to the first UE, where the reference path loss may also be referred to as an initial path loss.
  • path loss information for example, a reference path loss to the first UE, where the reference path loss may also be referred to as an initial path loss.
  • the first UE calculates a transmit power according to the reference path loss.
  • the first UE combines the mechanism of the LTE R8 uplink open loop power control, and the formula for calculating the transmit power is as follows:
  • AMAX is the maximum transmit power (dBm) of the first UE, determined by the UE type; ⁇ allocates the number of resource blocks RB of the first UE to the current subframe, the size of which is determined by the scheduling; ⁇ is the transmit power; "is a path loss compensation factor; the reference path loss delivered by the base station;
  • the first UE sends data to the second UE according to the calculated transmit power.
  • the base station may directly send the transmit power to the UE in 502.
  • the MME may be removed, and the first UE directly performs the 504, and sends data according to the transmit power delivered by the base station. To the second UE.
  • the second UE parses the SINR/BLER of the received data, and compares the SINR/BLER with the SINR/BLER threshold.
  • the second UE compares the parsed SINR/BLER with the expected SINR/BLER threshold that is configured and delivered by the base station; specifically, it may be compared with the low threshold and the high threshold.
  • the second UE sends the detection control information to the base station according to the comparison result of the SINR/BLER.
  • the detection control information for requesting the base station to increase the transmit power of the first UE may be sent in this step; if the parsed SINR/BLER is > The high threshold of the expected SINR/BLER, in this step, detection control information for requesting the base station to reduce the transmission power of the first UE may be transmitted.
  • the specific manner of sending the detection control information may use radio resource control
  • Radio Resource Control referred to as RRC
  • MAC CE Medium Access Control Control Element
  • the first UE sends power report information to the base station.
  • the first UE determines the transmit power according to the reference signal sent by the base station. Therefore, the base station can know that the first UE only needs to report the maximum transmit power to the base station by using the power report information, and the base station can calculate the maximum transmit power.
  • the specific form of the power reporting information may be, for example, an RRC dedicated message or a MAC CE.
  • the sending sequence of this step is not limited, that is, the time when the first UE sends the power reporting information to the base station, as long as it is before 508 as follows.
  • the base station After receiving the detection control information sent by the second UE, the base station determines to adjust the transmit power of the first UE.
  • the base station when determining whether to adjust the transmit power of the first UE, the base station needs to comprehensively consider the detection control information sent by the second UE and the power headroom of the first UE; and further consider the power adjustment of the first UE to other UEs. Interference.
  • the second UE may be notified that the first UE cannot increase the transmit power, and
  • the reason value is carried to the second UE, where the cause value may be, for example, a first UE with no power margin, and a third party UE with excessive interference.
  • the base station sends power adjustment information to the first UE.
  • the power adjustment information in this embodiment may be one or a combination of the following: an adjusted path loss value, a reference path loss compensation value, a power adjustment value/compensation value, and an adjusted power. Value, etc.
  • the message for sending the power adjustment information may be an RRC dedicated message, or a MAC CE, or an extension of an existing Transmit Power Control (TPC) extension, including designing a separate RNTI value. , such as TPC-D2D-RNTI, in order for the UE to recognize the command.
  • TPC Transmit Power Control
  • the first UE adjusts the transmit power according to the power adjustment information.
  • the compensation value of the reference path loss delivered by the base station is used as an example, and the transmit power estimated by the first UE is:
  • ⁇ ⁇ ( ) min ⁇ P CMAX , 10 log 10 (M TX (i) + P o TX (j) + (PL Initial + VPL ) ⁇
  • the adjusted transmit will be used.
  • the power again sends data to the second UE.
  • the second UE performs 505 to evaluate the SINR/BLER, determines whether to request the base station to adjust the transmit power of the first UE, and then repeats 506-510 until the desired SINR/BLER is reached.
  • the foregoing is a comparison process performed by the second UE, where the SINR/BLER (the first adjustment reference value) and the SINR/BLER threshold value (the second adjustment reference value) are performed; the second UE may also report the SINR/BLER
  • the base station performs the comparison processing of the SINR/BLER and the SINR/BLER thresholds by the base station.
  • the base station needs to go to the second UE.
  • the configuration information about the SINR/BLER is reported.
  • the configuration information is used to set the reporting mode of the SINR/BLER. For example, the event triggering mode can be captured.
  • the SINR/BLER threshold is configured to the second UE, and the second UE may determine whether to report the SINR/BLER to the base station according to the SINR/BLER threshold; or the periodic trigger mode may be used to configure the SINR to the second UE.
  • the reporting period of the /BLER may optionally include a starting point of the period, that is, when the second UE starts a periodic trigger. Both the SINR/BLER threshold and the reporting period described above may be associated with a QCI, a bearer identifier, and the like.
  • the message that the base station sends the SINR/BLER report configuration may be system information or RRC dedicated signalling.
  • the second UE When the second UE analyzes the SINR/BLER of the received data, it can determine whether the reported trigger condition is satisfied. For example, if the configured event is triggered, the second UE compares the SINR/BLER obtained by the parsing with the expected SINR/BLER threshold sent by the base station, and specifically, may be a low threshold and a high threshold.
  • the SINR/BLER is reported to the base station; after receiving the detection control information sent by the second UE, the base station compares the SINR/BLER and the SINR/BLER threshold, and determines to adjust the transmit power of the first UE; The judgment of execution is similar, and will not be described again.
  • the second UE will start a timer according to the indication of the base station, and the size of the timer is a period in which the second UE reports the SINR/BLER; when the timer expires, the second UE The base station sends the detection control information, and reports the SINR/BLER to the base station.
  • the first UE receives the path loss information sent by the base station or the reference signal sent by the second UE, and acquires the transmit power of the first UE according to the path loss information or the reference signal; and the base station can The second UE obtains the power adjustment information according to the detection control information sent by the adjustment value, and sends the power adjustment information to the first UE, thereby solving the problem that the D2D cannot adjust the power of the first UE in the prior art, and implements the sending in the D2D. Power control of the UE.
  • Embodiment 5 The power control method of the D2D of the present invention is further implemented as shown in FIG. 6.
  • the first UE obtains a transmit power according to a reference signal sent by the second UE, where the reference signal is an SRS; and the first UE The power headroom is reported to the base station; the comparison processing of the SINR/BLER and SINR/BLER threshold values in this embodiment may be performed by the second UE or the base station.
  • the method can include:
  • the base station indicates, to the second UE, the SRS configuration parameter that sends the SRS.
  • the SRS configuration parameter may include: SRS bandwidth: bandwidth of the SRS sent by the UE; frequency domain location: a frequency domain location where the UE sends the SRS; time interval: if configured, the interval for periodically sending the SRS, if not configured, It is considered to be aperiodic, single SRS; SRS configuration index: period and subframe compensation; transmission dressing: transmission dressing compensation; ns ⁇ ⁇ cyclic shift;
  • the foregoing parameters include an indication for sending an SRS, and the second UE may send an SRS according to the parameters configured by the base station.
  • the base station sends an SRS configuration parameter indicating that the SRS is received to the first UE.
  • the SRS configuration parameter indicating that the SRS is received is the same as the SRS configuration parameter indicating that the SRS is sent.
  • the parameter may further include an indication for receiving the SRS, where the first UE may receive the SRS signal.
  • the base station may send the transmit power of the SRS sent by the second UE to the first UE.
  • the second UE sends an SRS according to the configuration of 601, and the first UE receives the SRS according to the configuration of 602.
  • the first UE evaluates to obtain a path loss.
  • the first UE may calculate the received power of the SRS after receiving the SRS.
  • the first UE may obtain the path loss between the two UEs by calculating the difference between the transmit power of the SRS and the SRS received power (ie, Pathloss_D2D). ).
  • the first UE calculates a transmit power according to the path loss.
  • the first UE sends data to the second UE according to the calculated transmit power.
  • the base station sends a SINR/BLER report configuration to the second UE.
  • This step is the same as the embodiment shown in FIG. 5, and is not described again.
  • the sequence of the step is not set here.
  • the 607 is only shown. In the specific implementation, the 607 receives the data sent by the first UE in the second UE. Execute before.
  • the second UE parses the SINR/BLER of the received data, and determines whether the reported trigger condition is met.
  • the second UE will parse the first adjusted reference value, that is, the SINR/BLER and the second adjusted reference value sent by the base station, that is, the expected SINR/BLER threshold.
  • the second UE starts a timer according to the indication of the base station, where the size of the timer is a period in which the second UE reports the SINR/BLER; when the timer expires , then continue to execute 609;
  • the second UE sends the detection control information to the base station, and reports the SINR/BLER to the base station.
  • the first UE sends power report information to the base station.
  • the base station since the first UE evaluates the path loss according to the reference signal sent by the second UE, Therefore, the base station does not know the transmit power of the first UE, and the first UE needs to directly report the power headroom to the base station. Similar to the R8 mechanism, the base station can define the path loss change threshold (Pathloss_D2DChange) between the two UEs of the D2D, disable the power headroom timer (off PHR-timer), and the periodic power headroom report timer ( Periodically, the two timers may be D2D-specific; the base station may send the foregoing parameters to the first UE for configuration by using, for example, an RRC message, so that the first UE performs power headroom reporting according to the parameter. .
  • Pathloss_D2DChange the path loss change threshold between the two UEs of the D2D
  • disable the power headroom timer off PHR-timer
  • the periodic power headroom report timer Periodically, the two timers may be
  • the first UE starts the periodic PHR timer and the PROHIBIT PHR timer, and when the PROHIBIT PHR timer expires, determining the path loss value calculated this time and the path loss value when the last PHR is reported. Whether the absolute value of the difference is greater than the Pathloss_D2DChange; if the difference is greater than the Pathloss-D2DChange or the periodic PHR timer expires, the UE reports the PHR to the base station.
  • the periodic PHR timer expires, the periodic PHR timer and the PROHIBIT PHR timer are restarted; if the PROHIBIT PHR timer expires, only the PROHIBIT PHR timer is restarted.
  • the order of execution of this step is not limited to this, as long as it is after 604 and before 611.
  • the base station After receiving the detection control information sent by the second UE, the base station compares the SINR/BLER and the SINR/BLER threshold, and determines to adjust the transmit power of the first UE.
  • the base station sends power adjustment information to the first UE.
  • the power adjustment information in this embodiment may include an adjustment value/compensation value of the power, an adjusted power value, and the like; since the base station does not know the path loss of the first UE, there is no path in the power adjustment information. Damage compensation value, etc. 613.
  • the first UE adjusts the transmit power according to the power adjustment information.
  • the second UE does not report the SINR/BLER to the base station, but performs the self-determination in the embodiment shown in FIG. 5 .
  • the reference signal sent by the second UE is an SRS.
  • the second UE may also send the reference signal DM-RS.
  • the DM-RS configuration parameter of the DM-RS is sent to the second UE, where the DM-RS configuration parameter may include: a DM-RS time-frequency location, a DM-RS transmit power, and the like.
  • the foregoing parameters include an indication of sending a DM-RS, and the second UE may send the DM-RS according to the parameters configured by the base station.
  • the eNB sends a DM-RS configuration parameter indicating that the DM-RS is received to the first UE, where the DM-RS configuration parameter indicating that the DM-RS is received is the same as the DM-RS configuration parameter indicating that the DM-RS is sent.
  • the parameter includes an indication of receiving the DM-RS, and the first UE can receive the DM-RS signal according to the parameters. Further, the transmit power of the DM-RS is transmitted by the second UE to the first UE. After receiving the DM-RS, the first UE may calculate the received power of the DM-RS; in LTE, the DM-RS is related to uplink data and/or control transmission, and is mainly used for channel estimation of coherent demodulation, And it will appear in each transmitting uplink time slot; since the DM-RS is related to uplink data or control transmission, the first UE can parse the received power of the DM-RS while receiving the DM-RS data.
  • the first UE receives the path loss information sent by the base station or the reference signal sent by the second UE, and acquires the transmit power of the first UE according to the path loss information or the reference signal; and the base station can The second UE obtains the power adjustment information according to the detection control information sent by the adjustment value, and sends the power adjustment information to the first UE, thereby solving the problem that the D2D cannot adjust the power of the first UE in the prior art, and implements the sending in the D2D. Power control of the UE.
  • Embodiment 6 The structure of the UE of the present invention is as shown in FIG. 7.
  • the UE may be the first UE, and may perform the D2D power control method according to any embodiment of the present invention.
  • the specific working principle can be combined with the method embodiment.
  • the first UE may include: a processor 71 and a transmitter 72.
  • the processor 71 is configured to receive path loss information sent by the base station, or a reference signal sent by the second user equipment UE, and according to the path loss information or The reference signal acquires the transmit power of the UE;
  • the transmitter 72 is configured to send, according to the transmit power of the UE, data to the second UE, where the second UE acquires an adjustment reference value according to the data, and according to Transmitting the reference value to the base station to send detection control information;
  • the processor 71 is further configured to receive power adjustment information sent by the base station according to the detection control information, and adjust transmit power of the UE according to the power adjustment information.
  • the reference signal is a sounding reference signal SRS; correspondingly,
  • the processor 71 is further configured to receive a reference signal sent by the second UE, and acquire a received power of the reference signal according to the reference signal; and receive a transmit power of the reference signal sent by the base station; And a path loss between the second UE and the second UE according to the received power of the reference signal and the transmit power of the reference signal, and acquiring the transmit power of the UE according to the path loss.
  • the reference signal is a demodulation reference signal DM-RS; correspondingly,
  • the processor 71 is further configured to receive a reference signal sent by the second UE, and acquire, according to the reference signal, a received power of the reference signal and a transmit power of the reference signal; and, according to the reference The received power of the signal and the transmit power of the reference signal acquire a path loss between the second UE and the transmit power of the UE according to the path loss.
  • the adjusting the reference value includes: parsing the second UE according to the data a first adjustment reference value and a second adjustment reference value that is configured and sent by the base station to the second UE, where the first adjustment reference value includes at least one of the following: a signal to interference plus noise ratio SINR of the data, The block error rate BLER; the second adjustment reference value includes at least one of the following: an SINR threshold value, a BLER threshold value.
  • the receiver 73 is further configured to receive the transmit power of the UE sent by the base station.
  • the UE in this embodiment by setting a processor, a transmitter, or the like, causes the first UE to receive the path loss information sent by the base station or the reference signal sent by the second UE, and acquire the transmit power of the first UE according to the path loss information or the reference signal; And the base station may obtain the power adjustment information according to the detection control information sent by the second UE according to the adjustment value, and send the power adjustment information to the first UE, thereby solving the problem that the D2D cannot adjust the power of the first UE in the prior art.
  • the power control of the transmitting UE in D2D by setting a processor, a transmitter, or the like, causes the first UE to receive the path loss information sent by the base station or the reference signal sent by the second UE, and acquire the transmit power of the first UE according to the path loss information or the reference signal; And the base station may obtain the power adjustment information according to the detection control information sent by the second UE according to the adjustment value, and send the power adjustment information to the first UE, thereby solving the problem
  • Embodiment 7 The structure of another embodiment of the UE of the present invention is as shown in FIG. 8.
  • the UE may be a second UE, and may perform a D2D power control method according to any embodiment of the present invention.
  • the structure is briefly described, and its specific working principle can be combined with the method embodiment.
  • the UE may include: a processor 81, a transmitter 82, where the processor 81 is configured to receive data sent by the first UE based on the transmit power of the first UE, and obtain an adjustment reference value. ;
  • the transmitter 82 is configured to send, according to the adjusted reference value, detection control information to the base station, where the base station sends power adjustment information to the first UE according to the detection control information, and the first UE is configured according to the The power adjustment information is used to adjust the transmit power of the first UE.
  • the transmit power of the first UE is obtained by the first UE according to the path loss information sent by the base station or the reference signal sent by the UE.
  • the processor 81 is further configured to parse the data, to obtain a first adjustment reference value, and to receive, by the receiving base station, a second adjustment reference value that is configured and sent by the UE.
  • the first adjustment reference value includes at least one of the following: a signal to interference plus noise ratio SINR of the data, a block error rate BLER; and the second adjustment reference value includes at least one of the following: SINR threshold, BLER gate Limit.
  • the transmitter 82 is further configured to send, to the first UE, a transmit power of the reference signal, where the first UE is used according to the received power of the reference signal, and the base station is configured to The received power of the reference signal transmitted by the first UE acquires a path loss between the UE and the UE.
  • the transmitter 82 is further used to :
  • the detection control information is sent to the base station, where the detection control information is used to request the base station to increase the transmit power of the first UE. ;
  • the detection control information is used to request, by the base station, to reduce a transmit power of the first UE. .
  • the UE in this embodiment by setting the processor and the transmitter, to enable the first UE to receive the path loss information sent by the base station or the reference signal sent by the second UE, and acquire the transmit power of the first UE according to the path loss information or the reference signal;
  • the base station may obtain the power adjustment information according to the detection control information sent by the second UE according to the adjustment value, and send the power adjustment information to the first UE, thereby solving the problem that the D2D cannot adjust the power of the first UE in the prior art, and the implementation is implemented. Power control of the transmitting UE in D2D.
  • Embodiment 8 The structure of the base station embodiment of the present invention is as shown in FIG. 9, and the base station can perform any of the present invention.
  • the base station may include: a transmitter 91, a receiver 92, and a processor 93;
  • the transmitter 91 is configured to send path loss information to the first user equipment UE, or send indication information of the reference signal to the first UE and the second UE;
  • the receiver 92 is configured to receive detection control information that is sent by the second UE according to the adjusted reference value, where the adjustment reference value is obtained by the second UE according to the data sent by the first UE based on the transmit power of the first UE;
  • the processor 93 is configured to send power adjustment information to the first UE according to the detection control information, where the power adjustment information is used by the first UE to adjust a transmit power of the first UE, where The indication information is used to indicate that the first UE receives the reference signal sent by the second UE, or is used to instruct the second UE to send the reference signal to the first UE.
  • the adjustment reference value includes: a first adjustment reference value that is parsed by the second UE according to the data, and a second adjustment reference value that is configured and sent by the base station to the second UE;
  • the first adjustment reference value includes at least one of the following: a signal to interference plus noise ratio SINR of the data, a block error rate BLER; and the second adjustment reference value includes at least one of the following: an SINR threshold value, a BLER threshold value.
  • the transmitter 91 is further configured to send, to the first UE, a transmit power of the first UE.
  • the processor 93 is further configured to:
  • the base station in this embodiment, by setting a transmitter, a processor, or the like, so that the first UE receives the path loss information sent by the base station or the reference signal sent by the second UE, and acquires the transmit power of the first UE according to the path loss information or the reference signal; And the base station may obtain the power adjustment information according to the detection control information sent by the second UE according to the adjustment value, and send the power adjustment information to the first UE, thereby solving the problem that the D2D cannot adjust the power of the first UE in the prior art.
  • Embodiment 9 The present invention further provides a communication system, which can perform the D2D power control method according to any embodiment of the present invention.
  • the communication system of this embodiment may include: the first UE according to any embodiment of the present invention, And the second UE according to any embodiment of the present invention; the specific working principle thereof may be referred to as described in the method embodiment and the device embodiment.
  • the communication system of this embodiment obtains the transmission power of the first UE according to the path loss information or the reference signal by causing the first UE to receive the path loss information sent by the base station or the reference signal sent by the second UE; and the base station may be according to the second UE.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative, for example, the division of the unit is only a logical function division, and the actual implementation There may be additional ways of dividing, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like. The medium of the code.

Landscapes

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

Abstract

本发明提供一种D2D的功率控制方法、用户设备、基站和通讯系统,其中方法包括:第一用户设备UE接收基站发送的路损信息,或者第二UE 发送的参考信号,根据所述路损信息或参考信号获取所述第一UE的发射功率;基于所述第一UE的发射功率向所述第二UE发送数据,用于所述第二UE根据所述数据获取调整参考值,并根据所述调整参考值向基站发送检测控制信息;和所述第一UE接收所述基站根据所述检测控制信息发送的功率调整信息,并根据所述功率调整信息对所述第一UE的发射功率进行调整。本发明实现了D2D中发送端设备的功率控制。

Description

D2D的功率控制方法、 用户设备、 基站和通讯系统 本申请要求于 2011 年 11 月 28 日提交中国专利局、 申请号为 CN 201110384798. 0 , 发明名称为 "D2D的功率控制方法、 用户设备、 基站和通 讯系统" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术,特别涉及一种 D2D的功率控制方法、用户设备、 基站和通讯系统。 背景技术
在无线通信系统中, 为了克服路径损耗带来的影响, 使信号达到规定 的信号质量, 通常需要对发送端用户设备( user equipment, 简称 UE )进行 发射功率的调整和控制。釆取的方法一般为,发送端 UE周期地向基站发送 功率余量报告 (Power Headroom Report, 简称: PHR), 上 4艮发射功率和 UE 最大发射功率之间的差值即功率余量 (Power Headroom, 简称: PH), 以便 基站根据 PH对 UE的发射功率进行调整。 其中, UE在计算发射功率时, 需要考虑上行路损以补偿信道中的路径损耗, 由于上下行慢衰落部分相关, 通常使用下行路损代替上行路损。 随着移动通信技术的发展, 出现了越来越多的移动通信系统。 其中, 端到端(Device-to-device, 简称: D2D )通信可能成为下一代蜂窝通信网络 中的重要通信方式。 D2D通信方式中, 网络中的两个 UE之间可以直接通 信, 并且可以是在基站的控制下使用与网络相同的频谱资源进行通信。 同 样, 为了使信号达到规定的信号质量, 也需要对 D2D中的发送端 UE进行 发射功率的调整和控制。 但是, 目前的 D2D方式中尚没有发送端 UE功率 调整的方法, 无法有效控制发送端 UE的发射功率。 发明内容
本发明的目的是提供一种 D2D的功率控制方法、 用户设备、 基站和通 讯系统, 以实现 D2D中发送端设备的功率控制。
本发明一方面提供一种 D2D的功率控制方法, 所述方法包括: 第一用户设备 UE接收基站发送的路损信息,或第二 UE发送的参考信 号;
所述第一 UE根据所述路损信息或所述参考信号获取所述第一 UE的发 射功率;
所述第一 UE基于所述第一 UE的发射功率向所述第二 UE发送数据, 用于所述第二 UE根据所述数据获取调整参考值,并根据所述调整参考值向 基站发送检测控制信息; 和
所述第一 UE接收所述基站根据所述检测控制信息发送的功率调整信 息, 并根据所述功率调整信息对所述第一 UE的发射功率进行调整。
本发明另一方面提供一种 D2D的功率控制方法, 包括:
第二用户设备 UE接收第一 UE基于所述第一 UE的发射功率所发送的 数据, 并获取调整参考值; 和
所述第二 UE根据所述调整参考值向基站发送检测控制信息,用于所述 基站根据所述检测控制信息向所述第一 UE发送功率调整信息,及所述第一 UE根据所述功率调整信息对所述第一 UE的发射功率进行调整;
其中,所述第一 UE的发射功率由所述第一 UE根据所述基站发送的路损 信息或所述第二 UE发送的参考信号获取。
本发明再另一方面提供一种 D2D的功率控制方法, 包括: 基站向第一用户设备 UE发送路损信息, 或向第一 UE和第二 UE发送 参考信号的指示信息;
所述基站接收所述第二 UE根据调整参考值发送的检测控制信息; 和 所述基站根据所述检测控制信息, 向所述第一 UE发送功率调整信息, 所述功率调整信息用以所述第一 UE调整所述第一 UE的发射功率; 其中, 所述调整参考值由第二 UE根据所述第一 UE基于所述第一 UE 的发射功率所发送的数据获取;
所述指示信息用于指示所述第一 UE接收第二 UE发送的参考信号 ,或 用于指示所述第二 UE向所述第一 UE发送所述参考信号。 本发明再另一方面提供一种用户设备 UE, 包括: 处理器,用于接收基站发送的路损信息,或第二用户设备 UE发送的参 考信号, 并根据所述路损信息或参考信号获取所述 UE的发射功率; 发射机, 用于基于所述 UE的发射功率向所述第二 UE发送数据, 用于 所述第二 UE根据所述数据获取调整参考值,并根据所述调整参考值向基站 发送检测控制信息; 其中, 所述处理器, 还用于接收所述基站根据所述检测控制信息发送 的功率调整信息, 并根据所述功率调整信息对所述 UE 的发射功率进行调 整。
本发明再另一方面提供一种用户设备 UE, 包括: 处理器,用于接收第一 UE基于所述第一 UE的发射功率所发送的数据, 并获取调整参考值; 发射机, 用于根据所述调整参考值向基站发送检测控制信息, 用于所 述基站根据所述检测控制信息向所述第一 UE发送功率调整信息,及所述第 一 UE根据所述功率调整信息对所述第一 UE的发射功率进行调整; 其中,所述第一 UE的发射功率是由所述第一 UE根据所述基站发送的路 损信息或所述 UE发送的参考信号获取。 本发明再另一方面提供一种基站, 包括:
发射机, 用于向第一用户设备 UE发送路损信息, 或向第一 UE和第二 UE发送参考信号的指示信息; 接收机,用于接收第二 UE根据调整参考值发送的检测控制信息,所述 调整参考值由第二 UE根据所述第一 UE基于所述第一 UE的发射功率所发 送的数据获取;
处理器,用于根据所述检测控制信息, 向所述第一 UE发送功率调整信 息, 所述功率调整信息用以所述第一 UE调整所述第一 UE的发射功率; 其中,所述指示信息用于指示所述第一 UE接收第二 UE发送的参考信 号, 或用于指示所述第二 UE向所述第一 UE发送所述参考信号。 本发明再另一方面提供一种通讯系统, 包括: 本发明所述的一用户设 备、 及本发明所述的另一用户设备。
本发明的 D2D的功率控制方法、 用户设备、 基站和通讯系统, 通过第 一 UE接收基站发送的路损信息, 或者第二 UE发送的参考信号, 从而根据 所述路损信息或参考信号获取第一 UE 的发射功率并根据基站发送的功率 调整信息对自身的发射功率进行调整, 从而解决了现有技术中 D2D无法调 整第一 UE的发射功率的问题, 实现了 D2D中对第一 UE的功率控制。 附图说明
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述 中所需要使用的附图作一简单地介绍, 显而易见地, 下面描述中的附图是 本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳 动的前提下, 还可以根据这些附图获得其他的附图。 图 1为本发明 D2D的功率控制方法实施例所应用的 D2D系统架构图; 图 2为本发明 D2D的功率控制方法一实施例的流程示意图;
图 3为本发明 D2D的功率控制方法另一实施例的流程示意图; 图 4为本发明 D2D的功率控制方法又一实施例的流程示意图; 图 5为本发明 D2D的功率控制方法再一实施例的信令示意图; 图 6为本发明 D2D的功率控制方法再一实施例的信令示意图; 图 7为本发明 UE—实施例的结构示意图;
图 8为本发明 UE另一实施例的结构示意图;
图 9为本发明基站实施例的结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合本发明实 施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显 然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于 本发明中的实施例, 本领域普通技术人员在没有做出创造性劳动的前提下 所获得的所有其他实施例, 都属于本发明保护的范围。
本发明实施例应用于 D2D系统,该 D2D系统可应用于各个系统中,如 长期演进(Long Term Evolution, 简称: LTE )、 2G/3G网络。 以 LTE 场景 为例, 参见图 1 , 其中, UE1和网络侧基站基站通信, UE2和 UE3直接通 信, 上述两种通信可使用相同的频谱资源; 该 UE2和 UE3之间直接通信的 方式为 D2D通信方式, UE2和 UE3使用的频谱资源是基站分配的。
以下的实施例中,将图 1中的 UE2定义为发射端 UE,简称为第一 UE, 并将图 1中的 UE3定义为接收端 UE, 简称第二 UE。 其中, 该第一 UE可 以发送数据至第二 UE。 实施例一 本发明 D2D的功率控制方法一实施例如图 2所示, 包括:
201、 第一 UE接收基站发送的路损信息, 或者第二 UE发送的参考信 号, 根据所述路损信息或所述参考信号获取第一 UE的发射功率。 可选的, 第一 UE接收第二 UE发送的参考信号时, 该参考信号可以是 探测参考信号 (Sounding Reference Signal, 简称: SRS)或者解调参考信号 (Demodulation Reference Signal, 简称: DM-RS)。 在本实施例中, 例如, 基 站可以预先分别向第一 UE和第二 UE下发与参考信号对应的配置参数,例 如, 向第二 UE下发用于指示发送 SRS的配置参数(例如, SRS带宽、 频 域位置等), 第二 UE可以根据这些配置参数发送 SRS。 又如, 基站可以向 第一 UE下发用于指示接收 SRS的配置参数 (例如, SRS带宽、 频域位置 等)并可选的包括接收 SRS指示,第一 UE可以根据这些配置参数接收 SRS。 可选的,第一 UE在接收到上述的参考信号后,可以获取该信号的接收 功率;该信号的发射功率可以由第二 UE或者基站发送至第一 UE。第一 UE 可通过计算所述的接收功率和发射功率之差得到路损, 该路损为第一 UE 和第二 UE之间的路损。此时,第一 UE可以根据该路损计算得到发射功率。 可选, 第一 UE也可以接收基站发送的路损信息,该路损信息可以为基 站发送的参考路损或者该第一 UE的发射功率; 可选的,例如第一 UE可以接收基站发送的路损信息,该路损信息可以 为参考路损(也可以称为初始路损), 第一 UE可以根据该参考路损计算得 到自身的发射功率。 又如, 第一 UE也接收基站发送的发射功率, 并将该发 射功率作为用于发送数据的发射功率,此时, 第一 UE不再需要根据上述路 损信息计算发射功率, 而可以直接从基站获得该发射功率。
202、 第一 UE釆用所述第一 UE的发射功率向所述第二 UE发送数据。 其中, 第一 UE釆用 201中所获得的发射功率向第二 UE发送数据。 第 二 UE在获取到该数据后,可以根据该数据获取调整参考值,该调整参考值 例如包括信号与干扰加噪声比 /误块率 (Signal to Interference plus Noise Ratio/Block Error Ratio , 简称: SINR/BLER ) (本发明实施例中的所述的 SINR/BLER均表示: SINR或者 BLER ) , 上述的 SINR/BLER可以简称信 噪比 /误块率; 具体实施中, 调整参考值也可以为其他参数值, 根据具体的 方法进行设定。
可选的, 第二 UE还可以根据所述调整参考值向基站发送检测控制信 息。例如,该检测控制信息可以是第二 UE根据调整参考值做出判断后所发 送的请求增加或者减少第一 UE的发射功率;该检测控制信息也可以携带所 述调整参考值向基站进行上报, 以使得基站可以根据上报的调整参考值进 行判断是否增加或者减少第一 UE的发射功率。 可选的, 调整参考值例如可以为 SINR/BLER, 则第二 UE 可以根据 SINR/BLER判断是否增加或者减少第一 UE的发射功率, 是将 SINR/BLER 与基站预设的 SINR/BLER门限值进行比较, 该 SINR/BLER门限值可以包 括低门限、 高门限, 若 SINR/BLER低于低门限, 则表明需要增加第一 UE 的发射功率; 若 SINR/BLER高于高门限, 则表明需要减少第一 UE的发射 功率。 其中, 第二 UE执行此判断时, 是由基站预先将 SINR/BLER门限值 发送至第二 UE。
203、 第一 UE接收所述基站根据所述检测控制信息发送的功率调整信 息, 并根据所述功率调整信息对所述第一 UE的发射功率进行调整。
其中, 第一 UE可以接收到基站发送的功率调整信息,该功率调整信息 是基站根据第二 UE发送的检测控制信息得到的。例如,若基站根据检测控 制信息得到需要增加第一 UE的发射功率,则基站将增加第一 UE的发射功 率。
可选的, 所述的功率调整信息中可以包括功率的调整值 /补偿值、 调整 后的功率值等,第一 UE可以根据该功率调整信息对发射功率进行调整。第 一 UE在调整发射功率后, 将利用调整后的功率再次发送数据, 第二 UE也 将再次计算该数据的调整参考值, 对功率调整是否合适进行评估, 重复执 行本实施例的 202-203 , 直至发射功率调整至达到合适的调整参考值。
本实施例的 D2D的功率控制方法, 通过使得第一 UE接收基站发送的 路损信息或者第二 UE发送的参考信号,根据路损信息或者参考信号获取第 一 UE的发射功率; 并且基站可以根据第二 UE根据调整值发送的检测控制 信息得到功率调整信息并将该功率调整信息发送至该第一 UE,从而解决了 现有技术中 D2D无法调整第一 UE功率的问题, 实现了 D2D中发送端 UE 的功率控制。 实施例二 本发明 D2D的功率控制方法另一实施例如图 3所示, 包括:
301、 第二 UE接收第一 UE基于该第一 UE的发射功率所发送的数据, 并获取调整参考值。
可选的,第一 UE所釆用的发射功率是第一 UE根据基站发送的路损信 息或者第二 UE发送的参考信号获取的。 可选的, 当第一 UE根据第二 UE发送的参考信号获取发射功率时, 第 二 UE将预先接收到基站发送的用于指示发送所述参考信号的配置参数,并 根据该配置参数发送所述参考信号。 该参考信号例如为 SRS或者 DM-RS。 第一 UE在接收到所述参考信号后, 可以得到所述参考信号的接收功 率;可选的,第二 UE或者基站还可以向第一 UE发送参考信号的发射功率; 第一 UE可以计算所述参考信号的接收功率和发射功率之差得到路损,该路 损即为第一 UE和第二 UE之间的路损,并根据所述路损计算得到所述发射 功率。 302、 第二 UE根据调整参考值向基站发送检测控制信息。
可选的, 第二 UE在接收第一 UE釆用发射功率发送的数据之前, 还接 收基站发送的调整参考值例如 SINR/BLER的门限值或上报周期; 例如, 该 调整参考值的门限值包括第一门限值和第二门限值, 第一门限值小于第二 门限值。 可选的, 该调整参考值包括第一调整参考值、 第二调整参考值, 该第 一调整参考值包括以下至少一种: 数据的信号与干扰加噪声比 SINR, 误块 率 BLER, 第二调整参考值包括以下至少一种: SINR门限值, BLER门限 值。 例如, 第二调整参考值为第一门限值或第二门限值, 且所述第一门限 值小于第二门限值; 则第二 UE根据调整参考值向基站发送检测控制信息, 具体为: 第二 UE将第一调整参考值与第二调整参考值进行比较; 若第一调 整参考值小于第一门限值,则第二 UE向基站发送用于请求增加第一 UE的 发射功率的检测控制信息; 若第一调整参考值大于第二门限值, 则第二 UE 向基站发送用于请求减少第一 UE的发射功率的检测控制信息。 可选的, 第一调整参考值为 SINR/BLER , 第二调整参考值为 SINR/BLER 门限值, 可以为第一门限值或第二门限值; 则第二 UE根据 SINR/BLER向基站发送检测控制信息, 具体为: 第二 UE将 SINR/BLER与 SINR/BLER 门限值进行比较; 若 SINR/BLER 小于第一门限值, 或者 SINR/BLER大于第二门限值, 或者到达上报周期时, 则将 SINR/BLER携 带在检测控制信息中直接上报至基站,基站将根据该 SINR/BLER和自身存 储的 SINR/BLER门限值进行比较, 判断是否增加或者减少第一 UE的发射 功率。
基站根据所述检测控制信息, 例如若判断需要增加第一 UE 的发射功 率, 则得到功率调整信息并发送至第一 UE; 该功率调整信息中可以包括功 率补偿值等, 第一 UE根据该功率调整信息对其发射功率进行调整。 本实施例的 D2D的功率控制方法, 通过使得第一 UE接收基站发送的 路损信息或者第二 UE发送的参考信号,根据路损信息或者参考信号获取第 一 UE的发射功率,并且基站可以根据第二 UE根据调整值发送的检测控制 信息得到功率调整信息并将该功率调整信息发送至该第一 UE,从而解决了 现有技术中 D2D无法调整第一 UE功率的问题, 实现了 D2D中发送端 UE 的功率控制。 实施例三 本发明 D2D的功率控制方法又一实施例如图 4所示, 包括:
401、基站向第一用户设备 UE发送路损信息, 或向第一 UE和第二 UE 发送参考信号的指示信息。
其中,所述指示信息用于指示所述第一 UE接收第二 UE发送的参考信 号, 或用于指示所述第二 UE向所述第一 UE发送所述参考信号。
402、 基站接收第二 UE根据调整参考值发送的检测控制信息。 其中,所述调整参考值是第二 UE根据第一 UE釆用发射功率发送的数 据所获取,该发射功率是第一 UE根据基站发送的路损信息或者第二 UE发 送的参考信号获取。
可选的,例如,基站发送的所述参考信息可以是基站向第一 UE发送的 发射功率, 第一 UE可以基于该发射功率发送数据; 或者, 所述的路损信息 也可以是基站向第一 UE发送的参考路损,第一 UE可以根据该参考路损计 算获得所述发射功率。第一 UE在获得发射功率后,可釆用该发射功率向第 二 UE发送数据。 可选的, 在第二 UE发送所述的参考信号之前, 基站可以向第二 UE发 送用于指示发送所述参考信号的配置参数,并向第一 UE发送用于指示接收 所述参考信号的配置参数;第二 UE可以根据相应的配置参数发送所述参考 信号, 第一 UE可以根据相应的配置参数接收所述参考信号。该参考信号可 以为 SRS或者 DM-RS。 第一 UE可以根据上述参考信号的接收功率和发送 功率得到与第二 UE之间的路损, 并根据路损计算得到发射功率。 第一 UE在根据发射功率向第二 UE发送数据后, 第二 UE可以获得调 整参考值, 并根据调整参考值得到检测控制信息。 其中, 调整参考值包括 第一调整参考值、 第二调整参考值, 该第一调整参考值例如 SINR/BLER, 第二调整参考值为第一门限值或第二门限值 , 第一门限值小于第二门限值; 基站还可以向第二 UE发送上报周期。 可选的, 第二 UE根据调整参考值发送的检测控制信息, 例如为, 在第 一调整参考值小于第一门限值时, 或者在第一调整参考值大于第二门限值 时, 或者在到达上报周期时, 发送检测控制信息, 该检测控制信息主要用 于向基站上报所述第一调整参考值。 可选的, 第二 UE根据调整参考值发送的检测控制信息, 例如为, 在第 一调整参考值小于第一门限值时,发送用于请求增加第一 UE的发射功率的 检测控制信息; 在第一调整参考值大于第二门限值时, 发送用于请求减少 第一 UE的发射功率的检测控制信息。
403、基站根据所述检测控制信息, 向所述第一 UE发送功率调整信息。 其中包括,基站在接收到第二 UE发送的上报调整参考值的检测控制信 息时, 将根据该调整参考值以及基站自身存储的调整参考门限值判断是否 对第一 UE增加或者减少发射功率;所述的调整参考门限值包括第一门限值 和第二门限值, 所述第一门限值小于第二门限值; 可选的, 例如, 调整参考值为 SINR/BLER; 则基站将 SINR/BLER与 SINR/BLER门限值进行比较, 若 SINR/BLER小于所述第一门限值, 则得 到用于增加所述第一 UE的发射功率的增加指示,并根据所述增加指示和第 一 UE的功率余量, 向第一 UE发送功率调整信息; 若 SINR/BLER大于所 述第二门限值,则得到用于减少所述第一 UE的发射功率的减少指示,并根 据所述减少指示和第一 UE的功率余量, 向第一 UE发送功率调整信息。 可选的, 例如, 该功率调整信息可以包括参考路损的补偿值、 和 /或调 整后的路损值, 以使得第一 UE根据参考路损的补偿值和 /或调整后的路损 值对发射功率进行调整。 所述的和 /或的意思是, 两者可以单独存在或者只 存在其中一个。 本实施例的 D2D的功率控制方法, 通过使得第一 UE接收基站发送的 路损信息或者第二 UE发送的参考信号,根据路损信息或者参考信号获取第 一 UE的发射功率; 并且基站可以根据第二 UE根据调整值发送的检测控制 信息得到功率调整信息并将该功率调整信息发送至该第一 UE,从而解决了 现有技术中 D2D无法调整第一 UE功率的问题, 实现了 D2D中发送端 UE 的功率控制。
可选的, 本实施例的 D2D的功率控制方法中, 第一 UE可以向所述基 站发送功率上报信息,以使得基站根据该功率上报信息获得第一 UE的功率 余量, 并综合根据第二 UE发送的检测控制信息、以及该功率余量用于第一 UE的功率调整。
其中, 第一 UE向基站发送功率上报信息, 可以为以下两种情况: 一种情况是, 当第一 UE根据基站发送的参考信号获取得到发射功率 时, 基站可以知道第一 UE的发射功率。 例如, 基站直接将发射功率发送至 第一 UE, 此时基站知道第一 UE的发射功率; 基站向第一 UE发送参考路 损时,此时基站也可以根据该路损得知第一 UE的发射功率。则此种情况下, 第一 UE只需要向基站上报其自身的最大发射功率,基站可以根据该最大发 射功率和第一 UE的发射功率计算获得第一 UE的功率余量。 另一种情况是, 当第一 UE是根据第二 UE发送的参考信号获取得到发 射功率时, 由于是第一 UE自身计算路损并根据路损得到发射功率, 所以此 时基站是不知道第一 UE的发射功率的,需要第一 UE直接向基站上报功率 余量;该功率余量可以是第一 UE通过计算自身的最大发射功率和上述发射 功率之差获得。
在本实施例中, 在进行功率余量的上报时, 可以釆取定时器触发的方 式配置第一 UE 的上报。 例如, 基站可以配置禁止功率余量上报定时器 ( rohibit PHR-timer ) 、 周期性功率余量上 定时器( periodic PHR-timer ) 和路损变化值门限( Pathloss— D2DChange )三个参数, 并将这三个参数发送 至第一 UE进行配置。 第一 UE可以启动上述的定时器, 并在禁止功率余量 上报定时器超时, 且本次计算的路损与上次上报基站的路损之间的差值大 于设定的路损变化值门限时, 向基站上报所述功率余量; 或者, 在周期性 功率余量上报定时器超时时, 向基站上报所述功率余量。
在以上说明本发明 D2D的功率控制方法的实施例的基础上, 下面通过 具体的实例对所述的 D2D的功率控制方法进行更详细的描述; 并且, 对上 述的功率余量上报的两种方式也分别进行了说明。
实施例四 本发明 D2D的功率控制方法再一实施例如图 5所示, 本实施例中, 第 一 UE是根据基站发送的参考信号获得发射功率,并且第一 UE直接上报其 最大发射功率以使得基站得到功率余量; 该方法可以包括:
501、 基站下发期望的 SINR/BLER门限值给第二 UE。
可选的,该 SINR/BLER门限值可以与业务类型或者承载级别对应,即, 第一 UE发送给第二 UE的数据可能对应不同的业务类型,或者发送该数据 的承载信道对应特定的承载级别,第二 UE在评估该数据的接收情况时,需 要釆用与该数据的业务类型或者承载级别对应的 SINR/BLER门限值。
以业务类型为例, 可以参见如下的表 1 , 以承载标识(该承载标识对应 相应的 7 载级别)为例, 可以参见如下的表 2:
与业务类型对应的 BLER门限值
Figure imgf000016_0001
在上述的业务类型和承载标识之外, SINR/BLER门限值也可以和其他 参数对应, 如 QoS类型标识 (QoS Class Identifier, 简称: QCI)等, 这里不再 一一列举。
可选的, 上述的 SINR/BLER门限值可以包括低门限值(可以称为第一 门限值)和高门限值(可以称为第二门限值) 。 其中, 设置这两个门限值 的目的是, 第二 UE可以将评估所得的数据的 SINR/BLER与上述两个门限 值比较, 若 SINR/BLER位于低门限值和高门限值之间, 则可以认为该 SINR/BLER 处于合理范围, 不再进行发射端 UE 的发射功率调节; 若 SINR/BLER 小于低门限值或者大于高门限值, 则可以认为该 SINR/BLER 不合理, 需要对发射端 UE的发射功率进行调节。
本实施例中, 基站可以通过系统消息(system information), 或者 RRC 专用消息 (RRC dedicated signalling), 向第二 UE下发期望的 SINR/BLER门 限值。
502、 基站下发路损信息例如参考路损给第一 UE, 该参考路损也可以 称为初始路损。
503、 第一 UE根据该参考路损计算发射功率。 其中, 第一 UE结合 LTE R8上行开环功控的机制, 计算发射功率的公 式如下:
Ρτχ (0 = min{ PCMAX , 10 log 10 (MTX (z) + Po TX (j) + PLInitial )} 其中: AMAX为第一 UE的最大发射功率 (dBm), 由 UE类型确定; Μτχ为当前子帧分配该第一 UE的资源块 RB个数,其大小由调度确定; ^为发射功率; "为一个路损补偿因子; 为基站下发的参考路损;
504、 第一 UE根据计算得到的发射功率发送数据到第二 UE。 可选的, 本实施例中, 基站也可以在 502 中, 直接下发发射功率至第 ― UE; 则可以去掉 503 , 第一 UE直接执行该 504, 基于所述基站下发的 发射功率发送数据至第二 UE。
505、 第二 UE解析得到接收数据的 SINR/BLER, 并将该 SINR/BLER 与 SINR/BLER门限值进行比较。
其中, 第二 UE将解析得到的 SINR/BLER与基站配置并下发的期望的 SINR/BLER门限值相比较; 具体的, 可以是与低门限值和高门限值进行比 较。
506、 第二 UE根据 SINR/BLER的比较结果向基站发送检测控制信息。 可选的, 例如, 如果解析的 SINR/BLER < 期望的 SINR/BLER的低门 限,则本步骤中可以发送用于请求基站增加第一 UE的发射功率的检测控制 信息; 如果解析的 SINR/BLER > 期望的 SINR/BLER的高门限, 则本步骤 中可以发送用于请求基站减少第一 UE的发射功率的检测控制信息。 本步骤中, 该检测控制信息发送的具体方式可以釆用无线资源控制
( Radio Resource Control , 简称: RRC )专用消息或媒体接入控制层控制单 元( Medium Access Control Control Element, 简称: MAC CE ) 。
507、 第一 UE向基站发送功率上报信息。 其 中 , 功 率 余 量 的 计 算 为 PH = p CMAx - pw , 其 中
PcMAX - max{ PEMAX , PpowerClass ) , ^EMAX为小区允许的 UE最大发射功率 , ^P werClass是 和 UE类型相关的 UE最大发射功率。 由于本实施例中, 第一 UE是根据基站发送的参考信号确定发射功率, 因此, 基站可以知道 本步骤中, 第一 UE只需要通过功率上报信息向 基站上报最大发射功率, 基站就可以计算出该第一 UE的功率余量(PH ), 此处的最大发射功率指的是上述的 。 ^或者 。 可选的, 功率上报信息釆用的具体形式例如可以为 RRC 专用消息或 MAC CE。 此外, 本步骤的发送顺序不做限制, 即第一 UE向基站发送该功 率上报信息的时间, 只要在如下的 508之前即可。
508、 基站接收到第二 UE发送的检测控制信息后, 判决调整第一 UE 的发射功率。
本步骤中,基站在判决是否调整第一 UE的发射功率时,需要综合考虑 第二 UE发送的检测控制信息以及第一 UE的功率余量;还可以进一步考虑 第一 UE的功率调整对其他 UE的干扰。
可选的, 例如, 如果基站根据对其他 UE的干扰或者第一 UE的功率余 量, 认为无法再增大第一 UE的功率, 则可以通知第二 UE, 第一 UE无法 增加发射功率, 并可选的携带原因值给第二 UE, 该原因值例如可以为第一 UE无功率余量, 对第三者 UE干扰过大等。
如果基站判决结果是需要并且可以增加第一 UE的发射功率,则继续执 行 509。
509、 基站下发功率调整信息给第一 UE。 可选的, 本实施例中的功率调整信息可以为如下的一种或者几种的组 合: 调整后的路损值, 参考路损的补偿值, 功率的调整值 /补偿值, 调整后 的功率值等。
可选的, 下发功率调整信息的消息可为 RRC专用消息, 或 MAC CE, 或扩展现有的传输功率控制命令 (Transmit Power Control, 简称: TPC)上做 扩展, 包括设计一个单独的 RNTI值, 如 TPC-D2D-RNTI, 以便于 UE识别 该命令。
510、 第一 UE根据功率调整信息调整发射功率。 可选的, 例如, 以基站下发的参考路损的补偿值 为例, 第一 UE据 此评估的发射功率为:
Ρτχ ( ) = min{ PCMAX , 10 log 10 (M TX (i) + Po TX (j) + (PLInitial + VPL )} 第一 UE对发射功率调整后, 将釆用调整后的发射功率再次向第二 UE 发送数据。 第二 UE接收到数据后, 执行 505评估 SINR/BLER, 决定是否 向基站请求调整第一 UE的发射功率, 然后重复 506-510 , 直至达到期望的 SINR/BLER。 可选的, 以上是由第二 UE执行 SINR/BLER (第一调整参考值)和 SINR/BLER 门限值 (第二调整参考值) 的比较处理; 第二 UE 也可以将 SINR/BLER上报至基站, 由基站执行 SINR/BLER和 SINR/BLER门限值的 比较处理。 可选的 , 当由基站执行 SINR/BLER和 SINR/BLER门限值的比较处理 时, 基站需要向第二 UE下发关于上报 SINR/BLER的配置信息。 该配置信 息是用于设定 SINR/BLER的上报方式的。 例如, 可以釆取事件触发方式, 将 SINR/BLER门限值配置给第二 UE,第二 UE可以根据 SINR/BLER门限 值决定是否向基站上报 SINR/BLER; 或者, 也可以釆取周期性触发方式, 向第二 UE配置 SINR/BLER的上报周期, 可选的可包括周期的起始点, 即 第二 UE从何时启动周期性触发。 上述的 SINR/BLER门限值和上报周期均 可以与 QCI、 承载标识等关联。 可选的, 基站下发 SINR/BLER上报配置的 消息可为系统消息 (system information), 或者 RRC专用消息 (RRC dedicated signalling)。 第二 UE在解析得到接收数据的 SINR/BLER时, 可以判断上报触发条 件是否满足。 例如, 如果配置的为事件触发, 则第二 UE 将解析得到的 SINR/BLER与基站下发的期望的 SINR/BLER门限值相比较, 具体的, 可 以是与低门限值和高门限值进行比较; 如果解析的 SINR/BLER < (=)SINR/BLER的低门限,或者,解析的 SINR/BLER > (=)期望的 SINR/BLER 的高门限,则第二 UE向基站发送检测控制信息,上报 SINR/BLER给基站; 基站接收到第二 UE发送的检测控制信息后,将 SINR/BLER和 SINR/BLER 门限值比较, 判决调整第一 UE的发射功率; 判断方式与第二 UE执行的判 断方式类似, 不再赘述。 例如, 如果配置的为周期性触发, 则第二 UE将根 据基站指示启动一定时器, 定时器的大小为第二 UE上报 SINR/BLER的周 期; 当该定时器超时时, 则第二 UE 向基站发送检测控制信息, 上报 SINR/BLER给基站。 本实施例的 D2D的功率控制方法, 通过使得第一 UE接收基站发送的 路损信息或者第二 UE发送的参考信号,根据路损信息或者参考信号获取第 一 UE的发射功率; 并且基站可以根据第二 UE根据调整值发送的检测控制 信息得到功率调整信息并将该功率调整信息发送至该第一 UE,从而解决了 现有技术中 D2D无法调整第一 UE功率的问题, 实现了 D2D中发送端 UE 的功率控制。 实施例五 本发明 D2D的功率控制方法再一实施例如图 6所示, 本实施例中, 第 一 UE是根据第二 UE发送的参考信号获得发射功率, 该参考信号为 SRS; 并且第一 UE 向基站上报功率余量; 本实施例中的 SINR/BLER 和 SINR/BLER门限值的比较处理可以由第二 UE或者基站执行。 该方法可以 包括:
601、 基站下指示发送 SRS的 SRS配置参数给第二 UE。 可选的, SRS配置参数可包括: SRS带宽: UE发送 SRS的带宽; 频 域位置: UE发送 SRS的频域位置; 时间间隔: 如果配置了则为周期性发送 SRS的间隔, 如果没有配置, 则认为是非周期的, 单个 SRS; SRS配置索 引: 周期和子帧补偿; 传输梳妆: 传输梳妆补偿; n s ·· 循环移位;
可选的, 上述参数中包括发送 SRS的指示, 第二 UE可根据基站配置 的这些参数发送 SRS。
602、 基站下发指示接收 SRS的 SRS配置参数给第一 UE。
可选的,所述的指示接收 SRS的 SRS配置参数与指示发送 SRS的 SRS 配置参数是相同的; 该参数中还可包括接收 SRS的指示, 第一 UE可根据 这些参数接收 SRS信号。 可选的,基站可以将第二 UE发送 SRS的发射功率一并发送至第一 UE。
603、 第二 UE按照 601的配置发送 SRS , 而第一 UE按照 602的配置 接收 SRS。
604、 第一 UE评估得到路损。 其中, 第一 UE在接收到 SRS后, 可以计算得到该 SRS的接收功率; 并且, 第一 UE可以通过计算 SRS的发射功率和 SRS接收功率之差, 得到 两个 UE间的路损 (即 Pathloss_D2D ) 。 605、 第一 UE根据路损计算发射功率。
第一 UE根据 Pathloss— D2D计算发射功率, 开环功率可计算如下: ΡΊΧ ( ) = min{ PCMAX , 10 log 10 (M TX ( ) + Po TX (j) + Pathloss _ D 2D)} 除了 Pathloss— D2D夕卜, 其他参数的含义如图 5实施例中的定义。
606、 第一 UE根据计算得到的发射功率发送数据到第二 UE。
607、 基站下发 SINR/BLER上报配置给第二 UE。
本步骤与图 5 所示实施例相同, 不再赘述; 该步骤的顺序并不是设置 在此处, 该 607只是示意, 在具体实施中, 只要该 607在第二 UE接收第一 UE发送的数据之前执行即可。
608、 第二 UE解析得到接收数据的 SINR/BLER, 并判断上报触发条件 是否满足。
可选的, 例如, 如果 607中配置的为事件触发, 则第二 UE将解析得到 的第一调整参考值即 SINR/BLER 与基站下发的第二调整参考值即期望的 SINR/BLER门限值相比较, 该 SINR/BLER门限值可以为第一门限值(低 门限) 或者第二门限值 (高门限) 。 具体的, 如果解析的 SINR/BLER < (=)SINR/BLER的低门限,或者,解析的 SINR/BLER > (=)期望的 SINR/BLER 的高门限, 则继续执行 609;
可选的, 例如, 如果 607中配置的为周期性触发, 则第二 UE将根据基 站指示启动一定时器, 定时器的大小为第二 UE上报 SINR/BLER的周期; 当该定时器超时时, 则继续执行 609;
609、 第二 UE向基站发送检测控制信息, 上报 SINR/BLER给基站。
610、 第一 UE向基站发送功率上报信息。
本实施例中, 由于第一 UE是根据第二 UE发送的参考信号评估路损, 因此, 基站是不知道第一 UE的发射功率的, 第一 UE需要将功率余量直接 上报至基站。 与 R8机制类似, 基站可以定义 D2D的两个 UE之间的路损变化值门 限( Pathloss_D2DChange ) , 禁止功率余量上^艮定时器( prohibit PHR-timer ) 和周期性功率余量上报定时器 (periodic PHR-timer ) , 所述的两个定时器 可为 D2D特有的; 基站可以通过例如 RRC消息将上述参数发送至第一 UE 进行配置, 以使得第一 UE根据该参数进行功率余量的上报。
可选的 , 例如, 第一 UE启动周期性 PHR定时器和 PROHIBIT PHR定 时器,在 PROHIBIT PHR定时器超时时,判断本次计算的路损值与上次 PHR 上报时的路损值之间的差值的绝对值是否大于 Pathloss— D2DChange; 如果 差值大于 Pathloss— D2DChange或者周期性 PHR定时器超时, UE向基站上 报 PHR。
如果是周期 PHR定时器超时, 则重启周期 PHR定时器和 PROHIBIT PHR定时器; 如果 PROHIBIT PHR定时器超时, 则只重启 PROHIBIT PHR 定时器。
本步骤的执行顺序不局限在此, 只要在 604之后且 611之前即可。
611、 基站接收到第二 UE发送的检测控制信息后, 将 SINR/BLER和 SINR/BLER门限值比较, 判决调整第一 UE的发射功率。
如果基站判决结果是需要并且可以增加第一 UE的发射功率,则继续执 行 612;
612、 基站下发功率调整信息给第一 UE。 可选的, 本实施例中的功率调整信息可以包括功率的调整值 /补偿值, 调整后的功率值等; 由于基站不知道第一 UE的路损, 因此, 在该功率调整 信息中没有路损补偿值等。 613、 第一 UE根据功率调整信息调整发射功率。 可选的, 本实施例的 607-609、 611中, 也可以釆取第二 UE不向基站 上报 SINR/BLER, 而是执行图 5所示实施例中的自身判断的方式。 以上的本实施例中, 是以第二 UE发送的参考信号为 SRS为例; 可选 的, 第二 UE也可以发送参考信号 DM-RS。 可选的, 基站下指示发送 DM-RS的 DM-RS配置参数给第二 UE; 其 中, DM-RS配置参数可包括: DM-RS时频位置, DM-RS发射功率等。 上述 参数中包括发送 DM-RS的指示, 第二 UE可根据基站配置的这些参数发送 DM-RS。 基站下发指示接收 DM-RS的 DM-RS配置参数给第一 UE; 其中, 所述的指示接收 DM-RS的 DM-RS配置参数与指示发送 DM-RS的 DM-RS 配置参数是相同的; 该参数中包括接收 DM-RS的指示, 第一 UE可根据这 些参数接收 DM-RS信号。 此外, 由第二 UE将 DM-RS的发射功率发送至 第一 UE。 第一 UE在接收到 DM-RS后, 可以计算得到该 DM-RS的接收功率; LTE中 DM-RS是与上行数据和 (或)控制传输相关的, 主要用于相干解调的 信道估计, 并且会在每个发送上行时隙中出现; 由于 DM-RS是与上行数据 或控制传输相关的, 所以第一 UE在接收 DM-RS数据的同时能够解析出 DM-RS的接收功率。
其他步骤与第二 UE发送参考信号 SRS时相同, 不再赘述。 本实施例的 D2D的功率控制方法, 通过使得第一 UE接收基站发送的 路损信息或者第二 UE发送的参考信号,根据路损信息或者参考信号获取第 一 UE的发射功率; 并且基站可以根据第二 UE根据调整值发送的检测控制 信息得到功率调整信息并将该功率调整信息发送至该第一 UE,从而解决了 现有技术中 D2D无法调整第一 UE功率的问题, 实现了 D2D中发送端 UE 的功率控制。 实施例六 本发明 UE—实施例的结构如图 7所示, 该 UE可以为第一 UE, 且可 以执行本发明任意实施例的 D2D的功率控制方法; 本实施例对该第一 UE 的结构做简单说明, 其具体的工作原理可以结合参见方法实施例所述。 该 第一 UE可以包括: 处理器 71和发射机 72; 其中, 处理器 71 , 用于接收基站发送的路损信息, 或第二用户设备 UE发送 的参考信号, 并根据所述路损信息或参考信号获取所述 UE的发射功率; 发射机 72, 用于基于所述 UE的发射功率向所述第二 UE发送数据, 用于所述第二 UE根据所述数据获取调整参考值,并根据所述调整参考值向 基站发送检测控制信息;
该处理器 71 , 还用于接收所述基站根据所述检测控制信息发送的功率 调整信息, 并根据所述功率调整信息对所述 UE的发射功率进行调整。 进一步的, 所述参考信号为探测参考信号 SRS; 相应的,
该处理器 71 , 还用于接收所述第二 UE发送的参考信号, 并根据所述 参考信号获取所述参考信号的接收功率; 以及, 接收所述基站发送的所述 参考信号的发射功率; 以及, 用于根据所述参考信号的接收功率和所述参 考信号的发射功率获取与所述第二 UE之间的路损,并根据所述路损获取所 述 UE的发射功率。 进一步的, 所述参考信号为解调参考信号 DM-RS; 相应的,
该处理器 71 , 还用于接收所述第二 UE发送的参考信号, 并根据所述 参考信号获取所述参考信号的接收功率和所述参考信号的发射功率; 以及, 用于根据所述参考信号的接收功率和所述参考信号的发射功率获取与所述 第二 UE之间的路损, 并根据所述路损获取所述 UE的发射功率。 进一步的, 所述调整参考值, 包括: 所述第二 UE根据所述数据解析的 第一调整参考值和所述基站给所述第二 UE配置并发送的第二调整参考值; 其中, 所述第一调整参考值包括以下至少一种: 数据的信号与干扰加噪声 比 SINR, 误块率 BLER; 所述第二调整参考值包括以下至少一种: SINR 门限值, BLER门限值。
可选的, 还可以包括接收机 73 , 用于接收所述基站发送的所述 UE的 发射功率。
本实施例的 UE, 通过设置处理器、 发射机等, 使得第一 UE接收基站 发送的路损信息或者第二 UE发送的参考信号,根据路损信息或者参考信号 获取第一 UE的发射功率; 并且基站可以根据第二 UE根据调整值发送的检 测控制信息得到功率调整信息并将该功率调整信息发送至该第一 UE,从而 解决了现有技术中 D2D无法调整第一 UE功率的问题,实现了 D2D中发送 端 UE的功率控制。
实施例七 本发明 UE另一实施例的结构如图 8所示, 该 UE可以为第二 UE, 且 可以执行本发明任意实施例的 D2D 的功率控制方法; 本实施例对该第二 UE的结构做简单说明, 其具体的工作原理可以结合参见方法实施例所述。 如图 8所示, 该 UE可以包括: 处理器 81、 发射机 82; 其中, 处理器 81 , 用于接收第一 UE基于所述第一 UE的发射功率所发送的 数据, 并获取调整参考值;
发射机 82, 用于根据所述调整参考值向基站发送检测控制信息, 用于 所述基站根据所述检测控制信息向所述第一 UE发送功率调整信息,及所述 第一 UE根据所述功率调整信息对所述第一 UE的发射功率进行调整; 其中,所述第一 UE的发射功率是由所述第一 UE根据所述基站发送的 路损信息或所述 UE发送的参考信号获取。 可选的, 该处理器 81 , 还用于解析所述数据, 获取第一调整参考值; 以及, 接收基站为 UE配置并发送的第二调整参考值;
其中, 所述第一调整参考值包括以下至少一种: 数据的信号与干扰加 噪声比 SINR,误块率 BLER;所述第二调整参考值包括以下至少一种: SINR 门限值, BLER门限值。
可选的, 该发射机 82: 还用于向所述第一 UE发送所述参考信号的发 射功率,用以所述第一 UE根据所述参考信号的接收功率,和所述基站向所 述第一 UE发送的参考信号的接收功率, 获取与所述 UE间的路损。
可选的, 当所述第二调整参考值为第一门限值或第二门限值, 且所述 第一门限值小于第二门限值时, 所述发射机 82, 还用于:
在所述第一调整参考值小于所述第一门限值时, 向所述基站发送所述 检测控制信息, 所述检测控制信息用于向所述基站请求增加所述第一 UE 的发射功率; 或
在所述第一调整参考值大于所述第二门限值时, 向所述基站发送所述 检测控制信息, 所述检测控制信息用于向所述基站请求减少所述第一 UE 的发射功率。
本实施例的 UE, 通过设置处理器、 发射机, 使得第一 UE接收基站发 送的路损信息或者第二 UE发送的参考信号,根据路损信息或者参考信号获 取第一 UE的发射功率;并且基站可以根据第二 UE根据调整值发送的检测 控制信息得到功率调整信息并将该功率调整信息发送至该第一 UE,从而解 决了现有技术中 D2D无法调整第一 UE功率的问题,实现了 D2D中发送端 UE的功率控制。
实施例八 本发明基站实施例的结构如图 9所示, 该基站可以执行本发明任意实 施例的 D2D的功率控制方法; 本实施例对该基站的结构做简单说明, 其具 体的工作原理可以结合参见方法实施例所述。 如图 9所示, 该基站可以包 括: 发射机 91、 接收机 92、 处理器 93; 其中,
发射机 91 , 用于向第一用户设备 UE发送路损信息, 或向第一 UE和 第二 UE发送参考信号的指示信息;
接收机 92, 用于接收第二 UE根据调整参考值发送的检测控制信息, 所述调整参考值由第二 UE根据所述第一 UE基于所述第一 UE的发射功率 所发送的数据获取;
处理器 93 , 用于根据所述检测控制信息, 向所述第一 UE发送功率调 整信息,所述功率调整信息用以所述第一 UE调整所述第一 UE的发射功率; 其中,所述指示信息用于指示所述第一 UE接收第二 UE发送的参考信 号, 或用于指示所述第二 UE向所述第一 UE发送所述参考信号。
进一步的, 所述调整参考值, 包括: 所述第二 UE根据所述数据解析的 第一调整参考值和所述基站给所述第二 UE配置并发送的第二调整参考值; 其中, 所述第一调整参考值包括以下至少一种: 数据的信号与干扰加噪声 比 SINR, 误块率 BLER; 所述第二调整参考值包括以下至少一种: SINR 门限值, BLER门限值。
可选的, 所述发射机 91 , 进一步用于向所述第一 UE发送所述第一 UE 的发射功率。
进一步的, 当所述第二调整参考值为第一门限值或第二门限值, 且所 述第一门限值小于第二门限值时, 所述处理器 93 , 还用于:
在所述第一调整参考值小于所述第一门限值时,接收所述第二 UE发送 的所述检测控制信息, 所述检测控制信息用于向所述基站请求增加所述第 一 UE的发射功率; 或 在所述第一调整参考值大于所述第二门限值时,接收所述第二 UE发送 的所述检测控制信息, 所述检测控制信息用于向所述基站请求减少所述第 一 UE的发射功率。 本实施例的基站, 通过设置发射机、 处理器等, 使得第一 UE接收基站 发送的路损信息或者第二 UE发送的参考信号,根据路损信息或者参考信号 获取第一 UE的发射功率; 并且基站可以根据第二 UE根据调整值发送的检 测控制信息得到功率调整信息并将该功率调整信息发送至该第一 UE,从而 解决了现有技术中 D2D无法调整第一 UE功率的问题,实现了 D2D中发送 端 UE的功率控制。 实施例九 本发明还提供一种通讯系统, 该通讯系统可以执行本发明任意实施例 的 D2D的功率控制方法; 本实施例的通讯系统可以包括: 本发明任意实施 例所述的第一 UE、 以及本发明任意实施例所述的第二 UE; 其具体的工作 原理可以结合参见方法实施例和设备实施例所述。 本实施例的通讯系统,通过使得第一 UE接收基站发送的路损信息或者 第二 UE发送的参考信号,根据路损信息或者参考信号获取第一 UE的发射 功率;并且基站可以根据第二 UE根据调整值发送的检测控制信息得到功率 调整信息并将该功率调整信息发送至该第一 UE, 从而解决了现有技术中 D2D无法调整第一 UE功率的问题,实现了 D2D中发送端 UE的功率控制。 所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 上述 描述的系统, 装置和单元的具体工作过程, 可以参考前述方法实施例中的 对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置 和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅 是示意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实 现时可以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成 到另一个系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论 的相互之间的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单 元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。
作为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用软 件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销 售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方 案的全部或部分可以以软件产品的形式体现出来, 该计算机软件产品存储 在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是个人 计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的全 部或部分步骤。而前述的存储介质包括: U盘、移动硬盘、只读存储器( ROM, Read-Only Memory )、 随机存取存 4诸器 ( RAM, Random Access Memory ) 、 磁碟或者光盘等各种可以存储程序代码的介质。 本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步 骤可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机 可读取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述存储介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代 码的介质。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修 改, 或者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不 使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权利要求
1、 一种端到端 D2D的功率控制方法, 其特征在于, 所述方法包括: 第一用户设备 UE接收基站发送的路损信息,或第二 UE发送的参考信 号;
所述第一 UE根据所述路损信息或所述参考信号获取所述第一 UE的发 射功率;
所述第一 UE基于所述第一 UE的发射功率向所述第二 UE发送数据, 用于所述第二 UE根据所述数据获取调整参考值,并根据所述调整参考值向 基站发送检测控制信息; 和
所述第一 UE接收所述基站根据所述检测控制信息发送的功率调整信 息, 并根据所述功率调整信息对所述第一 UE的发射功率进行调整。
2、 根据权利要求 1所述的方法, 其特征在于, 所述第一 UE接收第二 UE发送的参考信号, 及所述第一 UE根据所述参考信号获取所述第一 UE 的发射功率, 具体为:
所述第一 UE根据所述参考信号获取所述参考信号的接收功率; 所述第一 UE接收所述基站发送的所述参考信号的发射功率; 所述第一 UE根据所述参考信号的接收功率和所述参考信号的发射功 率获取与第二 UE之间的路损,并根据所述路损获取所述第一 UE的发射功 率;
其中, 所述参考信号为探测参考信号 SRS。
3、 根据权利要求 1所述的方法, 其特征在于, 所述第一 UE接收第二 UE发送的参考信号, 及所述第一 UE根据所述参考信号获取所述第一 UE 的发射功率, 具体为: 所述第一 UE根据所述参考信号获取所述参考信号的接收功率和所述 参考信号的发射功率;
所述第一 UE根据所述参考信号的接收功率和所述参考信号的发射功 率获取与所述第二 UE之间的路损,并根据所述路损获取所述第一 UE的发 射功率;
其中, 所述参考信号为解调参考信号 DM-RS。
4、 根据权利要求 1-3任一项所述的方法, 其特征在于, 所述调整参考 值, 包括:
所述第二 UE根据所述数据解析的第一调整参考值和所述基站给所述 第二 UE配置并发送的第二调整参考值;
其中, 所述第一调整参考值包括以下至少一种: 数据的信号与干扰加 噪声比 SINR, 误块率 BLER;
所述第二调整参考值包括以下至少一种: SINR门限值, BLER门限值。
5、 根据权利要求 1所述的方法, 其特征在于, 所述第一 UE接收基站 发送的路损信息,所述第一 UE根据所述路损信息获取所述第一 UE的发射 功率, 包括:
所述第一 UE接收所述基站发送的所述第一 UE的发射功率。
6、 一种端对端 D2D的功率控制方法, 其特征在于, 包括: 第二用户设备 UE接收第一 UE基于所述第一 UE的发射功率所发送的 数据, 并获取调整参考值; 和
所述第二 UE根据所述调整参考值向基站发送检测控制信息,用于所述 基站根据所述检测控制信息向所述第一 UE发送功率调整信息,及所述第一 UE根据所述功率调整信息对所述第一 UE的发射功率进行调整; 其中,所述第一 UE的发射功率由所述第一 UE根据所述基站发送的路 损信息或所述第二 UE发送的参考信号获取。
7、 根据权利要求 6所述的方法, 所述第二 UE接收第一 UE基于所述 第一 UE的发射功率所发送的数据, 并获取调整参考值, 包括: 所述第二 UE解析所述数据, 获取第一调整参考值;
所述第二 UE接收所述基站为所述第二 UE配置并发送的第二调整参考 值;
其中, 所述第一调整参考值包括以下至少一种: 数据的信号与干扰加 噪声比 SINR, 误块率 BLER;
所述第二调整参考值包括以下至少一种: SINR门限值, BLER门限值。
8、 根据权利要求 6或 7 所述的方法, 其特征在于, 还包括: 所述第二 UE向所述第一 UE发送所述参考信号的发射功率,用以所述 第一 UE根据所述参考信号的接收功率,和所述基站向所述第一 UE发送的 参考信号的接收功率, 获取与所述第二 UE间的路损。
9、 根据权利要求 7所述的方法, 其特征在于, 当所述第二调整参考值 为第一门限值或第二门限值, 且所述第一门限值小于第二门限值时, 所述 第二 UE根据所述调整参考值向基站发送检测控制信息, 具体为: 当所述第一调整参考值小于所述第一门限值时,所述第二 UE向所述基 站发送所述检测控制信息, 所述检测控制信息用于向所述基站请求增加所 述第一 UE的发射功率; 或 当所述第一调整参考值大于所述第二门限值时,所述第二 UE向所述基 站发送所述检测控制信息, 所述检测控制信息用于向所述基站请求减少所 述第一 UE的发射功率。
10、 根据权利要求 7 所述的方法, 其特征在于, 当所述第二调整参考 值为第一门限值或第二门限值, 且所述第一门限值小于第二门限值时, 所 述第二 UE根据所述调整参考值向基站发送检测控制信息, 具体为: 当所述第一调整参考值小于所述第一门限值, 或大于所述第二门限值 时,所述第二 UE将所述第一调整参考值携带在所述检测控制信息中发送至 所述基站。
11、 一种端对端 D2D的功率控制方法, 其特征在于, 包括: 基站向第一用户设备 UE发送路损信息, 或向第一 UE和第二 UE发送 参考信号的指示信息;
所述基站接收所述第二 UE根据调整参考值发送的检测控制信息; 和 所述基站根据所述检测控制信息, 向所述第一 UE发送功率调整信息, 所述功率调整信息用以所述第一 UE调整所述第一 UE的发射功率;
其中, 所述调整参考值由第二 UE根据所述第一 UE基于所述第一 UE 的发射功率所发送的数据获取;
所述指示信息用于指示所述第一 UE接收第二 UE发送的参考信号 ,或 用于指示所述第二 UE向所述第一 UE发送所述参考信号。
12、 根据权利要求 11所述的方法, 其特征在于, 所述调整参考值, 包 括:
所述第二 UE根据所述数据解析的第一调整参考值和所述基站给所述 第二 UE配置并发送的第二调整参考值;
其中, 所述第一调整参考值包括以下至少一种: 数据的信号与干扰加 噪声比 SINR, 误块率 BLER;
所述第二调整参考值包括以下至少一种: SINR门限值, BLER门限值。
13、根据权利要求 11或 12 所述的方法, 其特征在于, 所述基站向第一 用户设备 UE发送路损信息, 包括: 所述基站向所述第一 UE发送所述第一 UE的发射功率。
14、 根据权利要求 12所述的方法, 其特征在于, 当所述第二调整参考 值为第一门限值或第二门限值, 且所述第一门限值小于第二门限值时, 所 述第二 UE根据所述调整参考值向基站发送检测控制信息, 具体为: 当所述第一调整参考值小于所述第一门限值时, 所述基站接收所述第 二 UE发送的所述检测控制信息,所述检测控制信息用于向所述基站请求增 加所述第一 UE的发射功率; 或 当所述第一调整参考值大于所述第二门限值时, 所述基站接收所述第 二 UE发送的所述检测控制信息,所述检测控制信息用于向所述基站请求减 少所述第一 UE的发射功率。
15、 根据权利要求 12所述的方法, 其特征在于, 当所述第二调整参考 值为第一门限值或第二门限值, 且所述第一门限值小于第二门限值时, 所 述第二 UE根据所述调整参考值向基站发送检测控制信息, 具体为: 当所述第一调整参考值小于所述第一门限值, 或大于所述第二门限值 时,所述基站接收所述第二 UE发送的所述检测控制信息, 所述检测控制信 息包含所述第一调整参考值。
16、 一种用户设备 UE, 其特征在于, 包括: 处理器,用于接收基站发送的路损信息,或第二用户设备 UE发送的参 考信号, 并根据所述路损信息或参考信号获取所述 UE的发射功率;
发射机, 用于基于所述 UE的发射功率向所述第二 UE发送数据, 用于 所述第二 UE根据所述数据获取调整参考值,并根据所述调整参考值向基站 发送检测控制信息; 其中, 所述处理器, 还用于接收所述基站根据所述检测控制信息发送 的功率调整信息, 并根据所述功率调整信息对所述 UE 的发射功率进行调 整。
17、 根据权利要求 16所述的 UE, 其特征在于, 所述参考信号为探测 参考信号 SRS, 所述处理器还用于: 接收所述第二 UE发送的参考信号, 并 根据所述参考信号获取所述参考信号的接收功率; 接收所述基站发送的所 述参考信号的发射功率; 以及, 根据所述参考信号的接收功率和所述参考 信号的发射功率获取与所述第二 UE之间的路损,并根据所述路损获取所述 UE的发射功率。
18、 根据权利要求 16所述的 UE, 其特征在于, 所述参考信号为解调 参考信号 DM-RS, 所述处理器还用于: 接收所述第二 UE发送的参考信号, 并根据所述参考信号获取所述参考信号的接收功率和所述参考信号的发射 功率; 及根据所述参考信号的接收功率和所述参考信号的发射功率获取与 所述第二 UE之间的路损, 并根据所述路损获取所述 UE的发射功率。
19、 根据权利要求 16-18任一项所述的 UE, 其特征在于, 所述调整参 考值, 包括:
所述第二 UE根据所述数据解析的第一调整参考值和所述基站给所述 第二 UE配置并发送的第二调整参考值; 其中, 所述第一调整参考值包括以下至少一种: 数据的信号与干扰加 噪声比 SINR, 误块率 BLER;
所述第二调整参考值包括以下至少一种: SINR门限值, BLER门限值。
20、 根据权利要求 16所述的 UE, 其特征在于, 还包括: 接收机, 用于接收所述基站发送的所述 UE的发射功率。
21、 一种用户设备 UE, 其特征在于, 包括: 处理器,用于接收第一 UE基于所述第一 UE的发射功率所发送的数据, 并获取调整参考值; 发射机, 用于根据所述调整参考值向基站发送检测控制信息, 用于所 述基站根据所述检测控制信息向所述第一 UE发送功率调整信息,及所述第 一 UE根据所述功率调整信息对所述第一 UE的发射功率进行调整; 其中,所述第一 UE的发射功率是由所述第一 UE根据所述基站发送的 路损信息或所述 UE发送的参考信号获取。
22、 根据权利要求 21所述的 UE, 其特征在于, 所述处理器, 还用于: 解析所述数据,获取第一调整参考值; 及接收基站为所述 UE配置并发送的 第二调整参考值; 其中, 所述第一调整参考值包括以下至少一种: 数据的信号与干扰加 噪声比 SINR, 误块率 BLER; 所述第二调整参考值包括以下至少一种: SINR门限值, BLER门限值。
23、 根据权利要求 21或 22所述的 UE, 其特征在于, 所述发射机, 还 用于向所述第一 UE发送所述参考信号的发射功率,用以所述第一 UE根据 所述参考信号的接收功率,和所述基站向所述第一 UE发送的参考信号的接 收功率, 获取与所述 UE间的路损。
24、 根据权利要求 22所述的 UE, 其特征在于, 当所述第二调整参考 值为第一门限值或第二门限值, 且所述第一门限值小于第二门限值时, 所 述发射机, 还用于: 在所述第一调整参考值小于所述第一门限值时, 向所述基站发送所述 检测控制信息, 所述检测控制信息用于向所述基站请求增加所述第一 UE 的发射功率; 或 在所述第一调整参考值大于所述第二门限值时, 向所述基站发送所述 检测控制信息, 所述检测控制信息用于向所述基站请求减少所述第一 UE 的发射功率。
25、 一种基站, 其特征在于, 包括: 发射机, 用于向第一用户设备 UE发送路损信息, 或向第一 UE和第二 UE发送参考信号的指示信息;
接收机,用于接收第二 UE根据调整参考值发送的检测控制信息,所述 调整参考值由第二 UE根据所述第一 UE基于所述第一 UE的发射功率所发 送的数据获取;
处理器,用于根据所述检测控制信息, 向所述第一 UE发送功率调整信 息, 所述功率调整信息用以所述第一 UE调整所述第一 UE的发射功率; 其中,所述指示信息用于指示所述第一 UE接收第二 UE发送的参考信 号, 或用于指示所述第二 UE向所述第一 UE发送所述参考信号。
26、 根据权利要求 25所述的基站, 其特征在于, 所述调整参考值, 包 括:
所述第二 UE根据所述数据解析的第一调整参考值和所述基站给所述 第二 UE配置并发送的第二调整参考值;
其中, 所述第一调整参考值包括以下至少一种: 数据的信号与干扰加 噪声比 SINR, 误块率 BLER;
所述第二调整参考值包括以下至少一种: SINR门限值, BLER门限值。
27、 根据权利要求 25或 26所述的基站, 其特征在于, 所述发射机,进一步用于向所述第一 UE发送所述第一 UE的发射功率。
28、 根据权利要求 26所述的基站, 其特征在于, 当所述第二调整参考 值为第一门限值或第二门限值, 且所述第一门限值小于第二门限值时, 所 述处理器, 还用于: 在所述第一调整参考值小于所述第一门限值时,接收所述第二 UE发送 的所述检测控制信息, 所述检测控制信息用于向所述基站请求增加所述第 一 UE的发射功率; 或 在所述第一调整参考值大于所述第二门限值时,接收所述第二 UE发送 的所述检测控制信息, 所述检测控制信息用于向所述基站请求减少所述第 一 UE的发射功率。
29、 一种通讯系统, 其特征在于, 包括: 如权利要求 16至 20任一项 所述的用户设备、 及如权利要求 21至 24任一项所述的用户设备。
PCT/CN2012/084553 2011-11-28 2012-11-14 D2d的功率控制方法、用户设备、基站和通讯系统 WO2013078946A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12854055.6A EP2770786B1 (en) 2011-11-28 2012-11-14 D2d power control method, user equipment, base station and communication system
US14/289,081 US20140274196A1 (en) 2011-11-28 2014-05-28 Device-to-device (d2d) power control method, user equipment, base station, and communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110384798.0 2011-11-28
CN201110384798.0A CN103139889B (zh) 2011-11-28 2011-11-28 D2d的功率控制方法、用户设备、基站和通讯系统

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/289,081 Continuation US20140274196A1 (en) 2011-11-28 2014-05-28 Device-to-device (d2d) power control method, user equipment, base station, and communication system

Publications (1)

Publication Number Publication Date
WO2013078946A1 true WO2013078946A1 (zh) 2013-06-06

Family

ID=48499061

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/084553 WO2013078946A1 (zh) 2011-11-28 2012-11-14 D2d的功率控制方法、用户设备、基站和通讯系统

Country Status (4)

Country Link
US (1) US20140274196A1 (zh)
EP (1) EP2770786B1 (zh)
CN (1) CN103139889B (zh)
WO (1) WO2013078946A1 (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103415022A (zh) * 2013-08-12 2013-11-27 电子科技大学 基站控制下的d2d频谱分配方法
CN104113832A (zh) * 2014-07-30 2014-10-22 宇龙计算机通信科技(深圳)有限公司 用于终端直连通信的功率控制方法、控制系统和基站
WO2016008138A1 (zh) * 2014-07-17 2016-01-21 华为技术有限公司 一种功率控制的方法,基站和用户设备
WO2016022841A1 (en) * 2014-08-08 2016-02-11 Kyocera Corporation Device-to-device (d2d) channel management with network-assisted reference signal transmission
US9999001B2 (en) 2015-01-30 2018-06-12 Huawei Technologies Co., Ltd. Power control method and device
US10172174B2 (en) 2014-08-08 2019-01-01 Kyocera Corporation Selection between cellular communication link and device-to-device (D2D) communication link using reference signals
CN111050305A (zh) * 2014-08-07 2020-04-21 太阳专利信托公司 通信装置、方法和集成电路
US11476970B2 (en) 2014-05-09 2022-10-18 Samsung Electronics Co., Ltd. Method and apparatus for performing communication by D2D communication terminal

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9084203B2 (en) * 2012-05-21 2015-07-14 Qualcomm Incorporated Methods and apparatus for providing transmit power control for devices engaged in D2D communications
JP6239270B2 (ja) * 2013-05-29 2017-11-29 京セラ株式会社 基地局、ユーザ端末及びプロセッサ
CN104349437B (zh) * 2013-08-09 2018-10-19 上海诺基亚贝尔股份有限公司 用于抑制干扰的方法和用户设备
WO2015018072A1 (zh) * 2013-08-09 2015-02-12 富士通株式会社 功率控制方法、用户设备以及基站
CN104640057A (zh) * 2013-11-11 2015-05-20 上海朗帛通信技术有限公司 一种d2d资源分配方法和装置
CN104995945B (zh) * 2014-01-03 2019-09-03 华为技术有限公司 传输控制方法、节点设备及用户设备
CN104812086B (zh) 2014-01-24 2018-10-26 索尼公司 用于进行设备到设备通信的用户设备、基站和方法
JP6425049B2 (ja) * 2014-01-27 2018-11-21 サン パテント トラスト 無線装置および電力制御方法
CN104812042A (zh) * 2014-01-28 2015-07-29 上海贝尔股份有限公司 一种对传输功率实施控制的方法
WO2015113444A1 (en) * 2014-01-28 2015-08-06 Telefonaktiebolaget L M Ericsson (Publ) Power control method in mixed cellular and d2d network and ue
EP3107230B1 (en) 2014-02-13 2020-06-24 LG Electronics Inc. Method for transmitting/receiving synchronization signal for d2d communication in wireless communication system, and apparatus therefor
CN105379367B (zh) * 2014-03-05 2020-04-28 华为技术有限公司 发射功率控制方法及设备
CN104202821B (zh) * 2014-03-20 2019-08-23 中兴通讯股份有限公司 设备到设备通信干扰避免方法和装置
WO2015168917A1 (zh) * 2014-05-08 2015-11-12 华为技术有限公司 一种通信方法及设备
US9794889B2 (en) * 2014-05-09 2017-10-17 Huawei Device Co., Ltd. Power adjustment method and apparatus
CN105101378B (zh) * 2014-05-23 2018-11-30 华为技术有限公司 一种功率控制方法及装置
JP6253071B2 (ja) * 2014-05-30 2017-12-27 華為技術有限公司Huawei Technologies Co.,Ltd. D2d通信での送信電力制御方法およびデバイス
CN105245395B (zh) * 2014-07-09 2018-12-04 中兴通讯股份有限公司 一种基于策略的m2m终端设备监测控制方法和装置
CN105306178B (zh) * 2014-07-31 2021-02-09 索尼公司 无线通信设备和无线通信方法
US9894621B2 (en) * 2014-07-31 2018-02-13 Telefonaktiebolaget Lm Ericsson (Publ) Power headroom reporting accounting
US10149254B2 (en) * 2014-08-01 2018-12-04 Panasonic Intellectual Property Corporation Of America Terminal, base station, transmission power control method, and transmission power setting method
US10687381B2 (en) * 2014-12-01 2020-06-16 Lg Electronics Inc. Method and apparatus for configuring prohibit timer for prose transmission in wireless communication system
CN111885552A (zh) * 2014-12-02 2020-11-03 索尼公司 电子设备、无线通信方法、存储介质和无线通信系统
CN105813186B (zh) * 2014-12-31 2019-11-22 上海诺基亚贝尔股份有限公司 一种为用户设备确定发射功率的方法、装置与系统
WO2016106700A1 (zh) * 2014-12-31 2016-07-07 华为技术有限公司 通信方法和装置
US10555199B2 (en) * 2015-05-08 2020-02-04 Lg Electronics Inc. Method for terminal for carrying out V2X communication in wireless communication system and terminal utilizing the method
CN106341772B (zh) * 2015-07-07 2021-06-18 索尼公司 无线通信设备和无线通信方法
CN106375930A (zh) * 2015-07-22 2017-02-01 中兴通讯股份有限公司 一种设备到设备通信方法及装置
KR102090925B1 (ko) * 2015-10-30 2020-03-19 후아웨이 테크놀러지 컴퍼니 리미티드 데이터 전송 방법 및 장치
CN108029076B (zh) * 2016-02-02 2020-03-10 华为技术有限公司 确定发射功率的方法、用户设备和基站
US9491721B1 (en) * 2016-02-11 2016-11-08 Sprint Communications Company L.P. Dynamically modifying power headroom prohibit timers based on signaling load
CN110545575B (zh) 2016-04-23 2022-06-21 上海朗帛通信技术有限公司 一种窄带移动通信的方法和装置
CN107371193B (zh) * 2016-05-13 2023-04-25 中兴通讯股份有限公司 一种带宽受限设备及其通信方法
EP3496470B1 (en) 2016-08-12 2022-10-05 Huawei Technologies Co., Ltd. Power control methods
US10656281B2 (en) 2016-11-10 2020-05-19 Cable Television Laboratories, Inc. Systems and methods for interference detection in shared spectrum channels
US10630377B2 (en) * 2016-11-10 2020-04-21 Cable Laboratories, Inc Systems and methods for beacon detection infrastructures
US9986513B1 (en) 2016-12-31 2018-05-29 Sprint Communications Company L.P. Device to-device (D2D) transmission power control
US11502875B2 (en) 2017-02-15 2022-11-15 Lg Electronics Inc. Method for measuring channel between terminals in wireless communication system, and device therefor
US10548096B2 (en) * 2017-04-21 2020-01-28 Samsung Electronics Co., Ltd. Information type multiplexing and power control
CN110383905B (zh) * 2017-05-05 2021-05-18 华为技术有限公司 上行链路传输的功率控制方法
CN109257810B (zh) * 2017-07-12 2022-05-10 华为技术有限公司 一种功率控制方法和终端设备
ES2943308T3 (es) * 2017-08-11 2023-06-12 Huawei Tech Co Ltd Método de control de potencia, terminal y equipo de red
CN110089161B (zh) * 2017-08-11 2021-06-22 华为技术有限公司 一种功率控制方法及相关设备
EP3777356A1 (en) * 2018-03-28 2021-02-17 Telefonaktiebolaget LM Ericsson (publ) Uplink scheduling based on upper and lower snr targets
CN110381573B (zh) * 2018-04-12 2021-11-09 维沃移动通信有限公司 旁链路的功率控制方法及终端设备
US11259252B2 (en) * 2018-07-20 2022-02-22 Qualcomm Incorporated Power control design for non-orthogonal multiple access
WO2020047024A1 (en) * 2018-08-28 2020-03-05 Intel Corporation Methods for network assisted beamforming for sidelink unicast communication
CN110913483B (zh) * 2018-09-18 2022-06-21 上海朗帛通信技术有限公司 一种被用于无线通信节点中的方法和装置
EP3854150A4 (en) * 2018-09-19 2021-10-13 NEC Corporation METHOD, DEVICE AND COMPUTER READABLE MEDIA FOR POWER CONTROL IN A WIRELESS COMMUNICATION SYSTEM
CN115175129A (zh) * 2018-09-29 2022-10-11 上海朗帛通信技术有限公司 一种被用于无线通信节点中的方法和装置
CN110972110B (zh) 2018-09-29 2022-07-29 上海朗帛通信技术有限公司 一种被用于无线通信节点中的方法和装置
CN111148207B (zh) * 2018-11-02 2021-07-16 华为技术有限公司 一种功率余量报告的上报方法、获取方法及装置
CN111278112B (zh) * 2018-12-05 2023-03-24 华为技术有限公司 一种功率余量的上报方法及装置
CN111294765B (zh) * 2019-01-04 2021-10-08 展讯通信(上海)有限公司 一种数据传输链路的维护、维护触发方法及装置
CN114845370B (zh) * 2019-01-11 2024-05-14 华为技术有限公司 功率控制方法及功率控制装置
CN111294908B (zh) * 2019-01-30 2023-08-04 展讯通信(上海)有限公司 一种功率控制方法、装置及存储介质
WO2020167000A1 (en) * 2019-02-13 2020-08-20 Samsung Electronics Co., Ltd. Method and apparatus for controlling ue transmission power in wireless communication system
EP3932122A4 (en) * 2019-03-01 2023-01-18 Lenovo (Beijing) Limited METHOD AND APPARATUS FOR CONTROLLING TRANSMIT POWER ON A SIDE LINK
CN111741519B (zh) * 2019-03-25 2023-04-11 华为技术有限公司 一种边链路发射功率计算方法及通信装置
CN112020131B (zh) * 2019-05-31 2022-04-01 大唐移动通信设备有限公司 一种发射功率确定方法、信息传输方法及通信设备
WO2021003626A1 (zh) * 2019-07-05 2021-01-14 北京小米移动软件有限公司 直连通信的发送功率控制方法、装置、设备及存储介质
CN113596902A (zh) * 2021-07-30 2021-11-02 西安抱朴通信科技有限公司 一种基站侧phr优化方法、存储介质、电子装置和基站
US11864017B2 (en) * 2022-03-08 2024-01-02 T-Mobile Innovations Llc Selective retransmission method for uplink overhead reduction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050030976A1 (en) * 2002-06-12 2005-02-10 Globespan Virata Incorporated Link margin notification using return frame
US7151795B1 (en) * 2001-12-31 2006-12-19 Arraycomm Llc Method and apparatus for increasing spectral efficiency using mitigated power near band-edge
WO2011075704A2 (en) * 2009-12-18 2011-06-23 Qualcomm Incorporated Transmission power control in multi-hop networks
CN102204365A (zh) * 2008-11-04 2011-09-28 高通股份有限公司 无线通信网络中基于接收机增益设置的发射功率控制
WO2011138495A1 (en) * 2010-05-06 2011-11-10 Nokia Corporation Measurements and fast power adjustments in d2d communications

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2134130B1 (en) * 2001-07-24 2017-02-22 NTT DoCoMo, Inc. Transmission power control device and method, mobile station, and communication device in mobile communication system
CN1522075A (zh) * 2003-02-11 2004-08-18 北京三星通信技术研究有限公司 Nb tdd cdma移动通信系统端到端直接通信的功率控制的方法
AR065637A1 (es) * 2007-03-07 2009-06-17 Interdigital Tech Corp Un metodo combinado de bucle abierto/bucle cerrado para controlar la potencia de enlace ascendente de una estacion movil
US9072060B2 (en) * 2008-06-03 2015-06-30 Nokia Technologies Oy Method, apparatus and computer program for power control to mitigate interference
US9351340B2 (en) * 2009-04-08 2016-05-24 Nokia Technologies Oy Apparatus and method for mode selection for device-to-device communications

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7151795B1 (en) * 2001-12-31 2006-12-19 Arraycomm Llc Method and apparatus for increasing spectral efficiency using mitigated power near band-edge
US20050030976A1 (en) * 2002-06-12 2005-02-10 Globespan Virata Incorporated Link margin notification using return frame
CN102204365A (zh) * 2008-11-04 2011-09-28 高通股份有限公司 无线通信网络中基于接收机增益设置的发射功率控制
WO2011075704A2 (en) * 2009-12-18 2011-06-23 Qualcomm Incorporated Transmission power control in multi-hop networks
WO2011138495A1 (en) * 2010-05-06 2011-11-10 Nokia Corporation Measurements and fast power adjustments in d2d communications

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103415022A (zh) * 2013-08-12 2013-11-27 电子科技大学 基站控制下的d2d频谱分配方法
US11476970B2 (en) 2014-05-09 2022-10-18 Samsung Electronics Co., Ltd. Method and apparatus for performing communication by D2D communication terminal
WO2016008138A1 (zh) * 2014-07-17 2016-01-21 华为技术有限公司 一种功率控制的方法,基站和用户设备
CN104113832A (zh) * 2014-07-30 2014-10-22 宇龙计算机通信科技(深圳)有限公司 用于终端直连通信的功率控制方法、控制系统和基站
CN111050305A (zh) * 2014-08-07 2020-04-21 太阳专利信托公司 通信装置、方法和集成电路
CN111050305B (zh) * 2014-08-07 2023-07-28 太阳专利信托公司 通信装置、方法和集成电路
WO2016022841A1 (en) * 2014-08-08 2016-02-11 Kyocera Corporation Device-to-device (d2d) channel management with network-assisted reference signal transmission
US10194452B2 (en) 2014-08-08 2019-01-29 Kyocera Corporation Device-to-device (D2D) channel management with network-assisted reference signal transmission
US11102794B2 (en) 2014-08-08 2021-08-24 Kyocera Corporation Device-to-device (D2D) channel management with network-assisted reference signal transmission
US10172174B2 (en) 2014-08-08 2019-01-01 Kyocera Corporation Selection between cellular communication link and device-to-device (D2D) communication link using reference signals
US11653378B2 (en) 2014-08-08 2023-05-16 Kyocera Corporation Transmission of D2D measurement results based on a reference signal
US11950275B2 (en) 2014-08-08 2024-04-02 Kyocera Corporation Apparatus for controlling UE for D2D measurement results
US9999001B2 (en) 2015-01-30 2018-06-12 Huawei Technologies Co., Ltd. Power control method and device

Also Published As

Publication number Publication date
US20140274196A1 (en) 2014-09-18
EP2770786A1 (en) 2014-08-27
EP2770786B1 (en) 2017-06-14
EP2770786A4 (en) 2014-08-27
CN103139889B (zh) 2015-09-09
CN103139889A (zh) 2013-06-05

Similar Documents

Publication Publication Date Title
WO2013078946A1 (zh) D2d的功率控制方法、用户设备、基站和通讯系统
US11785554B2 (en) Method and apparatus for controlling uplink power in wireless communication system
US11457055B2 (en) Method for performing codec adaptation in a UE operating in a communication network
KR101955778B1 (ko) 단말기가 요청하는 기지국 제어 단말기 전송 스로틀링
US9532360B2 (en) Method and apparatus for communication mode switching
WO2013029552A1 (zh) 一种功率控制方法、激活管理方法、用户终端及基站
WO2014161485A1 (zh) 设备到设备通信中的发射功率控制方法、装置及系统
WO2013166864A1 (zh) 测量参考信号的功率控制方法、装置和系统
WO2013155914A1 (zh) 功控信息通知及功控方法和设备
WO2016154892A1 (zh) 一种频谱共享的方法及装置
WO2013023612A1 (zh) CoMP系统中上行功率控制的补偿方法及基站、用户设备
WO2014111038A1 (zh) Tdd上下行子帧比例的双周期动态配置方法、基站、系统和通信设备
WO2011116727A2 (zh) 上行链路发射分集的传输方法、装置及系统
US11750349B2 (en) Telecommunications apparatus and methods
WO2015070446A1 (zh) 一种数据传输的方法及用户设备
WO2015131357A1 (zh) 发射功率控制方法及设备
US20220377674A1 (en) Power control for bidirectional sidelink
WO2015168917A1 (zh) 一种通信方法及设备
WO2020150981A1 (zh) 一种更新系统信息的方法、装置和通信系统
WO2015018092A1 (zh) 一种phr的上报方法及装置
JP2015226283A (ja) 移動局及びパワーヘッドルーム送信方法
CN118118991A (zh) 用于多时隙传输块传输的上行链路功率控制
WO2012071705A1 (zh) 触发功率剩余量报告的方法和用户设备
WO2014177116A1 (zh) 一种报告phr的方法、装置及系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12854055

Country of ref document: EP

Kind code of ref document: A1

REEP Request for entry into the european phase

Ref document number: 2012854055

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2012854055

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE