CN110267340A - For controlling the terminal and its method that send power in wireless communication system - Google Patents
For controlling the terminal and its method that send power in wireless communication system Download PDFInfo
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- CN110267340A CN110267340A CN201910444564.7A CN201910444564A CN110267340A CN 110267340 A CN110267340 A CN 110267340A CN 201910444564 A CN201910444564 A CN 201910444564A CN 110267340 A CN110267340 A CN 110267340A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
Abstract
The method and its user equipment of the power of the user equipment that control is communicated for device-to-device a kind of in a wireless communication system are provided.This method includes receiving the power control relevant information that D2D is communicated from base station (BS)；The transmission power of UE is determined based on the maximum available power of UE and the power control relevant information of the D2D received communication；And data are sent according to identified transmission power.
Description
The application be international filing date be on February 17th, 2014, China application No. is 201480009027.5, invention names
The invention for referred to as " communicating the method and apparatus for carrying out power control and multiplexing in radio honeycomb communication system to device-to-device "
The divisional application of patent application.
Technical field
Present invention relates in general to mobile radio systems, and communicate skill more particularly, in device-to-device
In the state that art and radio honeycomb communication technology are used together, transmission power control process including user equipment (UE) and multiple
With the operation of the UE of process, the operation of base station corresponding with the operation of the UE (BS) and their equipment.
Background technique
As the type for the service for using mobile radio system is significantly diversified, the technology for needing one kind new is with more
Effectively support emerging service, and therefore, the new method of R and D in mobile radio system
And new technology.
Device-to-device (D2D) communication is the new technology as the solution for new service occurred, and
Mainly enable predetermined UE directly with another UE communication for being present in around the equipment.By using the D2D communication technology, UE can
To find the UE being present in around the UE oneself, and execute and the direct communication for the equipment for needing to communicate.
When direct communication executes between UE, the huge advantage in terms of radio resource efficiency is obtained, because with making
It is compared with conventional wireless network via the communication of base station (BS), direct communication has used the radio resource of relatively small amount.In addition,
Since direct communication supports wherein UE discovery to be located at the method for the UE near the UE, UE can directly be sent to desired equipment
Thus information greatly improves the efficiency for supporting advertising service, social networking service (SNS) etc..
Currently, the advanced version of long term evolution-(LTE-A) is also required to support D2D technology, and the technology about D2D technology is begged for
By carrying out.
Fig. 1 is to show the view for the scene for supporting D2D communication in the cellular system.
BS 101 manages the UE 103 and UE 104 within the cell 102 managed by BS 101.UE 103 is by using UE-
BS link 106 executes the cellular communication with BS 101, and UE 104 is executed also by UE-BS link 107 is used and BS
101 cellular communication.When the D2D communication between UE 103 and UE 104 is possible, UE 103 and UE 104 can be
Information is directly exchanged by using UE-UE link 105 in the case where without BS 101.
Assuming that being implemented using the D2D communication technology of the cellular wireless mobile communication system of such as lte-a system with main
Ground prevents from being damaged using the UE of conventional cellular systems.For this purpose, (this, which refers to, does not execute traditional equipment to BS with honeycomb UE
Communication rather than D2D communication UE) used in radio resource overlapping resource can be used individually for D2D communication.
Alternatively, D2D UE use resource identical with resource used in honeycomb UE, but these resources are used for most possibly
It avoids interfering with each other.
Reversed (backward) used in LTE and lte-a system/positive (forward) duplex method includes that frequency division is double
Work (FDD).
In fdd, forward and reverse direction is distinguished by using different frequency resources.When the system pair using FDD
When D2D communication and conventional cellular communication use different resources, reverse frequency resource is generally in forward and reverse frequency resource
Among by more preferentially be used for D2D communicate.This is because further types of signal is multiplexed to just compared with reverse frequency resource
To frequency resource.Therefore, compared with reverse frequency resource, it is difficult in order to D2D communication purpose and individually dispensed positive frequencies
Resource.
In addition, due to the property of communication system, positive flow is more than anti-in the FDD system for only considering legacy cellular UE
To flow, and the positive expense sent is greater than the expense reversely sent, therefore compared with using reverse frequency resource, uses
Positive frequencies resource has heavier load.
Correspondingly, when use is for the positive resource that D2D is communication objective and distributes, the load of positive resource becomes more
Greatly, it is thus possible to be more difficult to adjust the equilibrium of forward and reverse resource used.
It communicates assuming that executing D2D by using reversed resource using the communication system of FDD, is used in the D2D communication technology
Leading to the problem of when positive resource can be solved.However, cannot be solved when being applied using the D2D communication technology of reversed resource
Certainly all problems.For example, the resource of predefined size can be assigned to entire frequency as reversed resource used in LTE system
The both ends of band, to send the control information for being used for legacy cellular UE.
The control information reversely sent may include the forward link channels quality information (CQI) of UE and lead to for positive
The corresponding ACK/NACK information of response message of mixed spin system (HARQ) technology of letter is sent for reversed information
Scheduling request information etc..
Information is controlled in backward direction, it is, being sent from predetermined UE to BS.The transmission for controlling information can be
By being performed when reversed source communications when D2D UE is in communication with each other and in only honeycomb UE.That is, multiple D2D UE
It can be in communication with each other and honeycomb UE can (for example, same subframe within) in LTE be sent out to BS simultaneously in same cell
Send control information.Certainly, it in above situation, is used to control the frequency resource of information transmission and is used for by D2D UE by honeycomb UE
The frequency resource of D2D communication can be different from each other or mutually the same.
Fig. 2 is to show honeycomb UE and D2D UE within same cell by using reversed resource simultaneously in same subframe
To BS send signal/from BS receive signal scene view.
BS 201 has cell 202 and UE 203, UE 205 and UE 206 within cell 202.UE 203 passes through
Reverse Turning Control information is sent to honeycomb UE using reversed resource 204.The execution of UE 205 is communicated with the D2D of UE 206, and can be led to
It crosses using D2D link 207 and sends information to UE 206.At this point, UE 203 is properly set for the transmission function of information transmission
Rate, so that BS 201 has reception power appropriate when receiving Reverse Turning Control information.In addition, UE 205 is properly set for
The transmission power that information is sent, so that UE 206 has reception power appropriate when receiving D2D and sending.
In the case, as the distance between UE 205 and UE 206 become much larger, UE 205 can be used in setting
D2D is executed after to the larger transmission power of the transmission appropriate of UE 206 to send.At this point, when UE 205 is located at very close to BS
When 201 position, what UE 205 was carried out may be received by BS 201 with very big reception power to the D2D transmission of UE 206.
At this point, when the reception power (reference label 208) that BS 201 is received from UE 205 is more reversed than by honeycomb UE 203
Big predetermined value of the signal of transmission or more, receiving sensitivity deterioration (sensitivity declines (desensing) phenomenon) connect in signal
Time receiving occurs, therefore the Reverse Turning Control information sent by UE 203 possibly can not be received by BS 201.
Summary of the invention
Technical problem
As described above, when honeycomb UE and the D2D UE for including in a BS are executed by using reverse frequency resource simultaneously
There are problems when transmission, and since BS is very big from the difference between the intensity of honeycomb UE and D2D the UE signal received, BS is not
The information sent from honeycomb UE can be received.
The technical solution solved the problems, such as
Making the present invention is in order to solve problem above and disadvantage, and at least to provide advantage described below.Therefore, originally
The one side of invention will provide and not generate receiving sensitivity using between the UE and honeycomb UE of D2D technology in mobile communication system
The power of the D2D channel needed for using the UE and honeycomb UE of D2D technology to be performed simultaneously communication is controlled while deterioration problem
Process, one of UE send the process of D2D data and cellular data and BS and UE for supporting these processes simultaneously
Operating method and device.
According to an aspect of the present invention, a kind of use of the control for device-to-device communication in a wireless communication system is provided
The method of the power of family equipment.This method comprises: the power control relevant information communicated from base station receiver equipment to equipment；It is based on
The maximum of user equipment can determine use with power and the power control relevant information of the device-to-device received communication
The transmission power of family equipment；And data are sent according to identified transmission power.
According to another aspect of the present invention, a kind of controlled in a wireless communication system for device-to-device communication is provided
The user equipment of power.The user equipment includes transceiver, for user equipment or base station send signal/from user equipment or
Base station received signal；And controller, for controlling with the power control correlation letter communicated from base station receiver equipment to equipment
Breath, based on user equipment it is maximum can with power and the power control relevant information for device-to-device communication received come
Determine the transmission power of user equipment；And data are sent according to identified transmission power.
According to another aspect of the present invention, a kind of controlled in a wireless communication system for device-to-device communication is provided
The method of the power of user equipment.This method comprises: the transmission relevant information communicated from base station receiver equipment to equipment；Based on institute
It states and sends whether the transmission subframe of cellular information of the relevant information to determine base station to be sent to is that device-to-device is allowed to communicate
Subframe；When the determination the result is that send subframe be allow device-to-device communicate subframe when, by using the hair
The first deviant for including in relevant information is sent to determine transmission power；And it is sent out according to identified transmission power to base station
Send the cellular information.
According to another aspect of the present invention, a kind of controlled in a wireless communication system for device-to-device communication is provided
The user equipment of power.The equipment includes: transceiver, for sending signal/from user equipment or base to user equipment or base station
It stands and receives signal；And controller, for controlling with the transmission relevant information communicated from base station receiver equipment to equipment；It is based on
Whether the transmission subframe for sending relevant information to determine the cellular information of base station to be sent to is to allow device-to-device logical
The subframe of letter；When the determination the result is that send subframe be allow device-to-device communicate subframe when, by using described
It sends the first deviant for including in relevant information and determines transmission power；And according to identified transmission power come Xiang Jizhan
Send the cellular information.
According to another aspect of the present invention, a kind of executed in a wireless communication system for device-to-device communication is provided
The method of the multiplexing of user equipment.This method comprises: determining the need for sending at predetermined point of time includes the positive letter of instruction
The uplink control information of the not received ACK or NACK of the reception of breath or positive information；When needing the transmission, determine
The information for including in the uplink control information is ACK or NACK；And when the determination is the result is that the uplink
When the information for including in link control message is ACK, the uplink control information is sent to base station, is arrived without sending device
The information of equipment communication.
According to another aspect of the present invention, it provides a kind of logical to cellular information and device-to-device in a wireless communication system
The user equipment that letter information is multiplexed.The user equipment includes: transceiver, for user equipment or base station send signal/
From user equipment or base station received signal；And controller, for controlling to determine the need for sending at predetermined point of time
Uplink control information including indicating the reception of positive information or the not received ACK or NACK of positive information；Work as needs
When the transmission, determine that the information for including in the uplink control information is ACK or NACK；And when the determination
The result is that the uplink control information is sent to base station when the information for including in the uplink control information is ACK,
The information communicated without sending device to equipment.
According to another aspect of the present invention, a kind of side sending power by terminal control in a wireless communication system is provided
Method, which comprises identification uplink is sent and whether secondary link transmission distributes in transmission time interval (TTI)；?
In the case where sending in TTI without distribution uplink, secondary link hair is sent to another terminal in TTI based on transmission power
It send；And in the case where distributing uplink transmission and secondary link transmission in TTI, uplink is sent to base station in TTI
It sends.
According to another aspect of the present invention, a kind of terminal being used to control transmission power in a wireless communication system is provided,
The terminal includes: transceiver, is configured as sending and receiving signal；And controller, it is configured as: identification uplink hair
It send and whether secondary link transmission distributes in transmission time interval (TTI)；The case where being sent in TTI without distribution uplink
Under, secondary link is sent to another terminal in TTI based on transmission power and is sent；And in TTI distribute uplink send and
In the case that secondary link is sent, uplink is sent to base station in TTI and is sent.
Detailed description of the invention
In from the following detailed description in conjunction with the drawings, the foregoing and other aspects of the invention, feature and advantage will become more
Add obviously, in attached drawing:
Fig. 1 is the view for showing device-to-device (D2D) communication substantially；
Fig. 2 shows the reverse frequency resources for being used as D2D resource；
Fig. 3 be embodiment according to the present invention is shown, can be by by using the format of the LTE reversed resource supported
The figure of distinguishing resource for D2D communication；
Fig. 4 is the small cell for showing embodiment according to the present invention, executing Network Controlled Cell deactivation process
The flow chart of the order of operation；
Fig. 5 is the block diagram for showing the internal structure of sending device of embodiment according to the present invention D2D user equipment (UE)；
Fig. 6 be show embodiment according to the present invention, base station (BS) equipment of power for controlling D2D UE it is interior
The block diagram of portion's structure；
Fig. 7 is the flow chart for showing the order of the operation of UE of embodiment according to the present invention；
Fig. 8 is the flow chart for showing the order of the operation of BS of embodiment according to the present invention；
Fig. 9 is the block diagram for showing the internal structure of UE according to another embodiment of the present invention；
Figure 10 is the block diagram for showing the internal structure of BS according to another embodiment of the present invention；
Figure 11 is the flow chart for showing the order of the multiplexing operation of UE of embodiment according to the present invention；And
Figure 12 is the flow chart for showing the order of multiplexing operation of UE according to another embodiment of the present invention.
Specific embodiment
Hereinafter, it will be described in detail with reference to the accompanying drawings the embodiment of the present invention.In the following description of the present invention, when being incorporated to
The well known function of this paper or the detailed description of configuration will be omitted when may subject of the present invention not known.
Meanwhile term described below allows for function of the invention to define, and the meaning of these terms can
Changed with intention or convention according to user, operator.Therefore, the overall content based on this specification is made in its definition
Out.
In addition, the detailed description of the embodiment of the present invention is mainly based upon according to orthogonal frequency division multiplexing (OFDM) especially
The wireless communication system of 3GPP EUTRA standard, and make, but without departing from the scope of the invention, it is of the invention
Theme can be applied to other communication systems with the channel form after similar techniques background and minor modifications, and more than
Content can be determined by one skilled in the art.
In the embodiment of the present invention described below, base station (BS) or cell can have identical meaning.In addition, setting
It is standby to be used to define to equipment (D2D) communication, for finding that the discovery of adjacent user equipment (UE) operates and wherein UE
Directly exchange the whole of the direct communication of information.
In the above description, it has discussed: when assuming that duplex method applied by the present invention corresponds to FDD system, D2D
Reverse frequency resource is supported in communication.
Fig. 3 be show by using the format of the current LTE reversed resource supported can be used for D2D communication have area
The view of other resource.
Fig. 3 shows the multiple subframes 301 assembled on a timeline.Subframe refers to chronomere used in LTE, and indicates
The time interval of 10ms including multiple symbols.The present invention describes subframe used in LTE as example, but the present invention is not
It is limited to this and another chronomere can be used.
In the present invention, it is assumed that a part in one group of subframe 301 is used as the resource communicated for D2D.That is,
In Fig. 3, conventional subframe 302 is allocated for cellular communication, and D2D subframe 303 is allocated for D2D communication.
It is specifically described the resource for D2D subframe 303, multiple subframes are included in the reversed resource for D2D communication
In.One subframe includes multiple orthogonal frequency division multiplexing (OFDM) symbol or single carrier frequency division multiplexing (SC-FDM) on time shaft
Multiple subcarriers on symbol and frequency axis.
As described above, multiple subcarriers 304 in the subcarrier on the frequency axis of the reversed resource of LTE, positioned at both ends
The transmission for being used for Reverse Turning Control information with 305 (this refers to the physical uplink control channel (PUCCH) in LTE).Such as back
Described in scape technology, Reverse Turning Control information may include the forward link channels quality information (CQI) of UE and lead to for positive
The corresponding ACK/NACK information of response message of mixed spin system (HARQ) technology of letter is sent for reversed information
Scheduling request information etc..
In contrast, D2D communication can pass through multiple sons at center other than the subframe at both ends, positioned at frequency axis
Carrier wave 306 executes.At this point, the last OFDM symbol (or SC-FDM symbol) for being located at each subframe can be by BS for sending
Detection reference signal (SRS) needed for the backward channel estimation of UE.Become since the sending cycle of SRS depends on the setting of BS
Change, therefore there may be the subframes including SRS, and there may also be the subframes for not including SRS.The subframe for not including SRS can be with
Last symbol 307 is used for the resource of D2D communication, or as receiving or from the change for receiving transmission from being sent to
Operation needed for fringe time because due to D2D communication characteristic and cause UE needs to be consecutively carried out and send and receive.
Receiving sensitivity deterioration (sensitivity decline) phenomenon is referred to Fig. 2, is retouched based on reversed resource shown in Fig. 3
It states.That is, being executed when in the UE 205 being located near BS 201 by using D2D resource, via D2D communication channel 207
When honeycomb UE 203 sends PUCCH 204 to BS 201 in the state of the transmission of UE 206 distally, due to receiving sensitivity
Degradation phenomena, BS 201 may not be able to be accurately received the PUCCH 204 sent by UE 203.This is because BS 201 is received
The receiving intensities of one or more signals may have the difference more than or equal to predetermined value.That is, the difference be by
Caused by following situation, wherein when the signal 208 transmitted by the UE 205 reaches BS 201, receiving intensity is very big.Accordingly
Ground, by following embodiment, the present invention provides a kind of solve since the communication of D2D UE causes BS that cannot receive honeycomb UE's
The method of the state of information.
Before the description provided by the present invention for sending power control, one kind will be described first in transmitters and receivers
When being generally in communication with each other, especially when transmitter is UE, the method for control transmission power.When UE sends predetermined channel to BS
When used transmission power can be determined that the smaller value in following two parameter.
1. the maximum available power of transmitter (UE)
2. can satisfy the desired hair for receiving power when receiver (BS) receives the signal sent by transmitter (UE)
Send power
The maximum available power of transmitter (i.e. UE), which can be, to be limited and can physically be sent out by the hardware of UE
Send device for the power that information is sent, or the maximum power determined by the predetermined set of BS.Receiver (i.e. BS) is made great efforts will
The reception power adjustment of UE is to predetermined value.This is receiving sensitivity deterioration when receiving the signal of several UE at the same time in order to prevent
Phenomenon and the scheduling of the transmission for UE is become easy.Correspondingly, UE limitation sends power with by the reception power of BS
It adjusts to predetermined value.
Therefore, the transmission power of UE can be determined by two parameters, and the transmission of UE can be by following equation (1)
To express:
Tx_Power=min { Max_Tx_Power, f (Rx_Power) } ... (1)
In above equation (1), Tx_Power indicates that the transmission power of UE, Max_Tx_Power indicate that the maximum of UE is available
Power, Rx_Power indicates that BS receives the reception power of the transmission signal of UE, and Rx_ is worked as in function f (Rx_Power) expression
Power is sent when Power is determined determined by UE.Rx_Power can be used in function f (Rx_Power) comes really in various ways
It is fixed, and most representative equation (2) is as follows.
F (Rx_Power)=Rx_Power+Prop_loss ... (2)
In above equation (2), Prop_loss refers to the path loss according to the distance between transmitters and receivers,
And by existing medium and transmitter and reception between the position situation and transmitters and receivers of transmitters and receivers
The distance between device determines.Then UE measures ginseng transmitted by BS by the reception power of reference signal transmitted by measurement BS
The transmission power of signal is examined, to detect the path loss between UE and BS.Path loss is the value measured for a long time.Forward direction measurement
Path loss values can be used to control reversed transmission power, as it can be assumed that the loss of reversed and forward path is identical.
Other parameters and path loss values can be used to define in the f (Rx_Power) of above equation (2).These parameters
May include, for example, the quantity (for example, number of Physical Resource Block defined in LTE (PRB)) of the resource of transmitted channel,
Predetermined offset value set by BS and other several parameters.The f (Rx_Power) of equation (2) to each parameter by assigning
Predefined weight simultaneously calculates weight and parameter phase Calais.The weight can be changed or be arranged by BS, and can have positive value or
Negative value.
Hereinafter, the reception for describing to solve BS by various embodiments by the power control of D2D UE is sensitive
Spend the method for degradation phenomena.
First embodiment: D2D channel power control
Following method is present embodiments provided, when the UE for executing D2D communication passes through D2D link (link according to the present invention
Refer to that transmitters and receivers send the wireless path of information by it and have and Radio Link, channel, wireless channel, company
The identical meaning such as connect) when sending signal, supported by being properly set for the transmission power of D2D link through D2D chain
Both the information transmission and the solution of receiving sensitivity degradation phenomena on road.
Predetermined BS and honeycomb UE there are in the state of, honeycomb UE sends predetermined control information or data information to BS, and
And it is present in the D2D UE within the cell of BS and sends D2D channel, the transmission power of D2D UE simultaneously or in identical subframe
It can be determined that a value in following three parameters, and following three can be confirmed as with embodiment according to the present invention
It is one the smallest in parameter.
1. sending the maximum available power of D2D UE (205 in Fig. 2)
2. can satisfy (setting) when reception D2D UE (206 in Fig. 2) is received by sending D2D UE (205 in Fig. 2)
The desired transmission power for receiving power when the signal of transmission
3. in BS from the state of sending D2D UE (205 in Fig. 2) and receive signal, when BS (201 in Fig. 2) is from bee
Nest UE (203 in Fig. 2) will not cause the transmission power of receiving sensitivity degradation phenomena when receiving signal
The maximum available power of UE, which can be, to be limited by the hardware of UE and physically can be used to believe by transmitter
Cease the power sent, or the maximum power determined by the predetermined set of BS.In addition, attempting to receive from transmission D2D UE hair
The reception power adjustment of the reception D2D UE of the D2D channel sent is reception power appropriate.Doing so will be so that be used to send D2D
The scheduling of the transmission of UE becomes easy.Third parameter is such value, when assuming that BS receives D2D transmission from transmission D2D UE,
The reception power that D2D is sent be maintained at predeterminated level or it is lower simultaneously, the value is unlike from the another received letter of honeycomb UE
Number big predetermined value or more.In the case, it is eager to excel since the reception signal of D2D UE becomes the reception signal than honeycomb UE
Much, thus third parameter prevent honeycomb UE signal receiving sensitivity deterioration situation.The above content is in equation below
(3) it is shown in.
Tx_Power=min { Max_Tx_Power, f (Rx_Power_D2D), g (Rx_Power_eNB) } ... (3)
In above equation (3), Tx_Power indicates to send the transmission power of D2D UE, and Max_Tx_Power indicates to send
The maximum available power of D2D UE, Rx_Power_D2D indicate that receiving D2D UE receives connecing for the transmission signal for sending D2D terminal
Power is received, and Rx_Power_eNB indicates the reception power when BS receives the transmission signal for sending D2D UE.
In addition, what function f (Rx_Power_D2D) expression was determined when Rx_Power_D2D is determined by sending D2D UE
Power is sent, and function g (Rx_Power_eNB) indicates to be determined when Rx_Power_eNB is determined by sending D2D UE
Send power.
Function f (Rx_Power_D2D) can be used Rx_Power_D2D and determine in various ways, and most representative
Equation (4) it is as follows.
F (Rx_Power_D2D)=Rx_Power_D2D+Prop_loss_D2D ... (4)
In above equation (4), Prop_loss_D2D refer to according to send D2D UE and receive D2D UE between away from
From path loss, and by existing medium between the position situation and transmitters and receivers of transmitters and receivers and
The distance between transmitters and receivers determine.When send and receive D2D UE be arranged arranged signal D2D channel and
When sending power, sending D2D UE can be detected by shared transmission/received information about arranged prearranged signals
Path loss.
Other parameters and path loss values can be used to define in the f (Rx_Power_D2D) of above equation (4).These
Parameter may include, for example, the quantity of the resource of transmitted channel is (for example, the number of Physical Resource Block defined in LTE (PRB)
Mesh) if, set by BS or by the channel setting between D2D UE come the predetermined offset value being arranged and other trepangs
Number.The f (Rx_Power_D2D) of equation (4) is by assigning predefined weight to each parameter and counting weight and parameter phase Calais
It calculates.The weight can be predetermined, and be arranged by BS or be arranged by the channel setting between D2D UE, and can
To have positive value or negative value.
Function g (Rx_Power_eNB) can be used Rx_Power_eNB and define in various ways, and most representative
Equation (5) it is as follows.
G (Rx_Power_eNB)=Rx_Power_eNB+Prop_loss_eNB+Desense_Offset ... (5)
In above equation (5), Prop_loss refers to according to the path damage for sending the distance between D2D UE and BS
Consumption, and by the position situation and D2D UE that send D2D UE and BS and send existing medium and hair between D2D UE and BS
The distance between D2D UE and BS is sent to determine.The reception power that D2D UE is sent by reference signal transmitted by measurement BS is right
The transmission power of reference signal transmitted by BS is measured, afterwards to detect the path loss sent between D2D UE and BS.
Desense_Offset is defined as, and is adjusted to make as BS while receiving D2D signal and coming from another
The value of receiving sensitivity deterioration when the signal of honeycomb UE.Desense_Offset be considered that the ability of the receiver of BS and
It is defined as predetermined value.Alternatively, then Desense_Offset can be arranged by BS notifies to transmission D2D UE.
Other parameters and path loss values can be used to define in the g (Rx_Power_eNB) of above equation (5).These
Parameter may include, for example, the quantity of the resource of transmitted D2D channel is (for example, Physical Resource Block defined in LTE (PRB)
Number), predetermined offset value and several other parameters set by BS.The g (Rx_Power_eNB) of equation (4) pass through to
Each parameter assigns predefined weight and calculates weight and parameter phase Calais.The weight can be changed or be arranged by BS, and can
To have positive value or negative value.
Hereinafter, the order of the operation of the UE and BS of first embodiment according to the present invention will be described.
Fig. 4 shows the flow chart for controlling the process by the transmission power of the D2D UE D2D channel sent.
Fig. 4, which is shown, sends D2D UE 401, receives D2D UE 402 and BS 403.In step 404, D2D UE is sent
401 and reception D2D UE 402 establishes D2D (or channel for D2D communication).In step 404, the information of BS can be used.
For example, in order to allow to send and receive D2DUE discovery each other, execute scheduling and practically send data, Ying Jinhang is mutually in step.
This, which is synchronized, can be used the primary synchronization signal and secondary synchronization signal (PSS and SSS) Lai Zhihang sent by BS.
Then, in step 405, it sends D2D UE 401 and receives power control relevant information from BS 403.Power control
Relevant information may include the used information when determining f (Rx_Power_D2D) in above equation (4), or when with
Used information when g (Rx_Power_eNB) is determined in upper equation (5).In a step 406, receiving D2D UE 402 can also be with
Power control relevant information is received from BS 403.This is because receiving the transmission D2D that D2D UE 402 is also possible to D2D channel
UE, it is therefore desirable to power control relevant information.Power control relevant information in step 406 need not be with the power in step 405
It is identical to control relevant information.
Although Fig. 4, which is shown, provides power control relevant information to the BS and offer power control phase for sending D2D UE 401
It is identical to the BS 403 for receiving D2D UE 402 to close information, but the present invention is not limited thereto.For example, when including each D2D UE's
When BS is different from each other, BS can be different from each other.
Finally, the path loss of D2D channel can be determined by sending D2D UE 401 and receiving D2D UE 402.In step
In 404, path loss can be determined.The determination of path loss can by the transmission of the reference signal in step 407, by connecing
The pathloss measurement report in the path loss calculation and step 408 of D2D UE 402 is received, and is sending 401 He of D2D UE
It receives and is shared between D2D UE 402.
In step 409, D2D channel can be sent by using following equation (6) by sending D2D UE 401.
Tx_Power=min { Max_Tx_Power, f (Rx_Power_D2D), g (Rx_Power_eNB) } ... (6)
Fig. 5 is the block diagram for showing the internal structure of transmission D2D UE of embodiment according to the present invention.
Storage unit 501 is stored in the relevant setting information of the power control (i.e. f (Rx_Power_ for determining and sending from BS
The information used when D2D)), or the information used when determining g (Rx_Power_eNB).
The power control relevant information stored in storage unit 501 is input into power control controller 502.It connects
, power control controller 502 determines the transmission power of D2D channel by using above equation (6), and passes through control signal
503 by the transmission power input of identified D2D channel into power amplifier 505.
Meanwhile D2D channel generator 504 by the information that is sent by D2D channel execute Channel Coding and Modulation come
Generate the signal of wireless transmission.The signal is amplified by power amplifier 505.The degree of amplification is by power control controller 502
It is determined by using control signal 503.The signal amplified by power amplifier 505 is wirelessly sent out by transmitter 506
It send.
Although having been shown that power control controller 502 and D2D channel generator 504 are divided into individual block, it
Need not be the hardware physically divided, and can be realized by detailed functional block performed by controller.
Fig. 6 is the internal structure for showing embodiment according to the present invention, the BS equipment of power for controlling D2D UE
Block diagram.
The relevant setting value determiner 601 of D2D power control determines the power control required when D2D UE receives D2D channel
Make relevant setting value.The relevant setting value of power control may include the information used when determining f (Rx_Power_D2D).
In addition, the relevant setting value determiner 602 of D2D power control, determines that power control required when BS receives D2D channel is relevant
Setting value.The relevant setting value of power control may include the information used when determining g (Rx_Power_eNB).
The two setting values are sent to D2D UE by signaling via transmitter 603.Signaling procedure is Fig. 4 the step of
It is shown in 405.Although Fig. 6 shows the relevant setting value determiner of D2D power control for being divided into two blocks 601 and 602,
The relevant setting value determiner of D2D power control need not be divided into physically separate hardware, and it should be noted that D2D function
Rate controls relevant setting value determiner and can be realized by the detailed functional block performed by controller.
Second embodiment: the power control of honeycomb channel in the presence of D2D channel
The second embodiment of the following description of the present invention provides the Poewr control method of new honeycomb UE, to solve to work as
When BS receives the D2D link of the D2D UE present in adjacent position the problem of the receiving sensitivity deterioration of honeycomb UE.
It has been described, honeycomb UE is when reversely sending information by using honeycomb channel, using according to following equation (7)
Determining transmission power.
Tx_Power=min { Max_Tx_Power, f (Rx_Power) } ... (7)
In above equation (7), Tx_Power indicates that the transmission power of UE, Max_Tx_Power indicate that the maximum of UE is available
Power, Rx_Power indicates that BS receives the reception power of the transmission signal of UE, and Rx_ is worked as in function f (Rx_Power) expression
Power is sent when Power is determined determined by UE.
According to the honeycomb UE of the present embodiment, transmission is provided using different equatioies according to the existence or non-existence of D2D UE
Power setting method.
That is, this method provides following schemes, wherein when D2D UE be present near BS and BS receive honeycomb
When the transmission of UE, honeycomb UE adds additional offset to send stronger transmission signal, to avoid due to D2D to power is sent
The generation of the deterioration of receiving sensitivity caused by UE.The present embodiment as described above can be expressed by following equation (8).
Tx_Power=min { Max_Tx_Power, f (Rx_Power)+offset_D2D } ... (8)
In above equation (8), Tx_Power indicates that the transmission power of UE, Max_Tx_Power indicate that the maximum of UE is available
Power, Rx_Power indicates that BS receives the reception power of the transmission signal of UE, and Rx_ is worked as in function f (Rx_Power) expression
Power is sent when Power is determined determined by UE.The last one parameter offset_D2D corresponds to be sent according in honeycomb UE
The existence or non-existence of the D2D UE sent simultaneously is executed with honeycomb UE and there is different value when predetermined information or control information
Offset.
Generally, with D2D UE there is no the case where compared with, exist execute simultaneously transmission D2D UE in the case where,
Offset_D2D can have bigger value.For example, in the presence of D2D UE, offset_D2D (the first offset)=5dB, and
In the absence of D2D UE, offset_D2D (the second offset)=0dB.
In addition, the effect of offset_D2D can be obtained by being arranged differently than parameter present in f (Rx_Power).f
(Rx_Power) equation (9) can be expressed as follows.
F (Rx_power)=P0_PUCCH+PLc+h(nCQI, nHARQ, nSR)+ΔF_PUCCH(F)+ΔTxD(F′)+g(i)…(9)
Parameter P in above equation (9)O_PUCCH, ΔF_PUCCH(F), ΔTxD(F ') corresponds to the use being arranged by higher level
In the parameter of the performance of PUCCH.One or more of these parameters can be divided into be gathered for two.Specifically, this two
A set includes not configuring a set used in the general subframe of D2D and being configured with used in the subframe of D2D
Another set.UE can determine with the presence or absence of D2D in the subframe of currently transmitted PUCCH, and by the two parameters (or parameter set
Close) one of substitute into above equation (9) the equation is used for PUCCH power configuration.
Offset_D2D can be arranged by BS by higher level signaling, or can be set to predetermined value.Alternatively,
It can be from the new down link control information that newly defines and adding offset_D2D to the DCI format of tradition setting
(DCI) format notifies offset_D2D to UE.For example, offset_D2D can pass through physical downlink control channel
(PDCCH) it is sent to UE.Alternatively, in the case where no definition new DCI format, which can be by using biography
Unite definition DCI format predetermined format in reserved field be sent to the reserved word of the DCI format of UE or traditional definition
Section is defined as different explanations, and offset_D2D can be sent to UE.
In above equation (9), function f (Rx_Power) can be determined by the above method.
Meanwhile the existence or non-existence in order to allow honeycomb UE to send while knowing D2D UE, BS are believed by using system
Cease the subframe where all UE notice D2D channel for including into BS.In addition, the transmission of each notice D2D UE of from the BS to UE
Time.In this case, it is possible to notify sending time to UE by higher level signaling or Physical layer control information.
Hereinafter, the order of the operation of the UE and BS of second embodiment according to the present invention will be described.Fig. 7 is to show
The flow chart of the order of the operation of the UE of second embodiment according to the present invention.
In step 701, honeycomb UE starts to operate, also, obtains D2D in a step 702 and send relevant information, packet
It includes, for example, about the offset_D2D information for executing the information of time and subframe that D2D is sent and being sent according to D2D.
It may be used to determine whether following subframe about the information of subframe that D2D is sent wherein is executed, wherein will use and UE
The corresponding A and B of the received information about offset_D2D.
In addition, about the offset_D2D information sent according to D2D, when assuming that if D2D UE exists offset_D2D=
A and as D2D UE be not present if offset_D2D=B when, the value of (A, B) can be set to UE.
D2D sends relevant information and can be obtained by broadcast channel from system information, and can be set in UE
Each of and notified by BS.In this case, it is possible to use the higher level signaling of such as radio resource control (RRC).
Offset_D2D can be learnt by system information.Alternatively, offset_D2D is by BS for each of UE
To be arranged, and notified by BS.In this case, it is possible to use the higher level signaling of such as RRC.Alternatively, BS can be with
Definition includes the new DCI format that D2D sends relevant information and offset_D2D information, and is determined by PDCCH to UE transmission
The new DCI format of justice.Otherwise, in the case where no definition new DCI format, which can be by using traditional definition
It is the scheduled field of the DCI format of field or traditional definition that predetermined format retains in DCI format to send the letter to UE
Breath.BS can also define the scheduled field of the DCI format of the traditional definition with different explanations, and send offset_ to UE
D2D。
Then, honeycomb UE prepares cellular information in step 703, that is, the information of BS is sent to, then in step 704
Whether middle determination has been performed simultaneously D2D hair when sending relevant information using the D2D obtained in step 702 to send cellular information
It send.For example, UE can determine whether the subframe for sending cellular information is the subframe for allowing D2D to send.
As a definitive result, when D2D send with cellular information transmission execute together when, UE continue step 705 with
Offset_D2D=A is set, that is, the deviant needed in the presence of D2D transmission.In contrast, when D2D sends no and honeycomb
When information transmission executes together, UE continues step 706 so that offset_D2D=B is arranged, that is, in the absence of D2D transmission
Required deviant.
Then, in step 707, UE determines transmission function by using the offset_D2D and following equation (10) of setting
Rate.
Tx_Power=min { Max_Tx_Power, f (Rx_Power)+offset_D2D } ... (10)
In addition, UE terminates hair in step 709 after sending cellular information by using transmission power in step 708
Pass through journey.
Fig. 8 is the flow chart for showing the order of the operation of BS of second embodiment according to the present invention.
In step 801, BS starts to operate, also, sends D2D in step 802 and send relevant information, it is, closing
In the information for executing time and subframe that D2D is sent.In step 803, BS sends the power control information of honeycomb UE, also
It is all information including offset_D2D information, relevant to the power control of honeycomb UE.
UE by broadcast channel from system information obtain D2D send relevant information or BS can each notice into UE
D2D sends relevant information.Similarly, UE can learn that offset_D2D or BS can be set D2D and send correlation from system information
Information and the D2D transmission relevant information of each notice setting into UE.In another embodiment, BS can be defined including D2D
The new DCI format of relevant information and offset_D2D information is sent, and defined new DCI is sent to UE by PDCCH
Format.Alternatively, in the case where no definition new DCI format, which can be by using the DCI format of traditional definition
The field retained in the middle for predetermined format to send the DCI lattice of the traditional definition of information or definition with different explanations to UE
The scheduled field of formula simultaneously sends offset_D2D to UE.
Operation terminates in step 804.
Fig. 9 is the block diagram for showing the internal structure of UE equipment of second embodiment according to the present invention.
D2D sends determiner 901 and determines whether there is D2D transmission.Power control correlation setting value storage unit 902 stores
The relevant setting value of the power control received from BS.When D2D sends the determination information of determiner 901 and is stored in power control
When information in related setting value storage unit 902 is input into honeycomb power controller 903, believed by the honeycomb that UE is sent
The transmission power of breath is determined.
Offset_D2D is stored in power control correlation setting value storage unit 902, and honeycomb sends power control
Device 903 processed sends the determination of determiner 901 according to D2D to determine the exact value of offset_D2D.The channel sent by UE is led to
Honeycomb channel generator 905 is crossed to generate, and is amplified by power amplifier 906.By reference to indicated by label 904
By after value input power amplifier 906 determined by honeycomb power controller 903, the value amplified is determined process.
The cellular information amplified is sent by transmitter 907.
Each of block shown in Fig. 9 is not required to be divided into physically separate hardware, and these blocks can be with
It is realized by the concrete function block run by controller.
Figure 10 is the block diagram for showing the internal structure of BS equipment of second embodiment according to the present invention.
The D2D generated by D2D transmission time information generator 1001 sends relevant information and sends relevant information by honeycomb
The honeycomb channel that generator 1002 generates sends power control relevant information, is sent to UE by transmitter 1003.
Hereinafter, the method for the multiplexing D2D information and cellular information that description are provided by another embodiment.
It has already been discussed that reversely sending cellular information to BS and D2D UE by using identical reversed frequency in honeycomb UE
Rate resource is come the problem sending information under another D2D UE state and the power by D2D UE or honeycomb UE of the problem
The solution of control.
In the following, it is assumed that a UE sends or receives D2D information simultaneously, and send cellular information.UE executes general
Honeycomb is sent, and wherein reverse data information is reversed transmission (that is, being sent to BS), or is believed according to the control of forward data information
Breath is reversed transmission.However, when sending cellular information, it may be necessary to while sending or receiving and believing for the D2D of D2D communication
Breath.
Honeycomb transmission may include data transmission, and further include the ACK/NACK transmission sent according to forward data, CQI
Transmission and scheduling request information.
Another embodiment of the following description of the present invention provides, when the transmission and D2D information for generating cellular information simultaneously
Transmission when solution.
3rd embodiment: it is sent while honeycomb channel and D2D channel
In this example, it is assumed that a UE sends reversed cellular information to BS by honeycomb channel, and at the same time passing through
D2D channel sends D2D information to another D2D UE.UE uses the transmission scheme of single-carrier frequency division multiple access (SC-FDMA).
Correspondingly, it will be assumed that the number for the channel that a UE is sent simultaneously is restricted to one.When needing UE while sending
When honeycomb channel and D2D channel, operation is possible below.Preferably, UE can choose selected by the execution together of following operation
Select that.
1. transmission D2D channel
2. transmission honeycomb channel
3. the setting according to BS only sends the channel selected from D2D channel and honeycomb channel.In the case, when
Transmission/reception passes through system information, the higher level signaling of such as RRC signaling or physics while D2D channel and honeycomb channel
When layer control information is generated, BS can send the information that instruction has the channel of priority to UE.
4. ignore SC-FDMA scheme while sending two channels.It is firstly allocated at this point, sending power to honeycomb channel,
And dump power is assigned to D2D channel.
Fourth embodiment: honeycomb channel and D2D channel are selectively sent according to ACK/NACK
In this example, it is assumed that it includes the reversed cellular information of ACK/NACK that a UE, which is sent by honeycomb channel to BS,
And at the same time sending D2D information to another D2D UE by D2D channel.
The information about ACK/NACK is sent from UE to BS, it is intended that UE notifies BS to have been received just by ACK/NACK
It has been successfully received to information.
When corresponding to the ACK in ACK and NACK to the information that BS is sent from UE, i.e., when positive information has been successfully received
When, ACK information should be sent to BS to avoid additional retransmission.In contrast, correspond to when being sent to BS information by UE
When NACK in ACK and NACK, even if nack message is not sent to BS, BS also executes the retransmission of positive information.Cause
This, the transmission for sending not ACK of NACK is important.
Therefore, following method is present embodiments provided, wherein when a UE is sent to BS including ACK/ by honeycomb channel
The reversed cellular information of NACK and when sending D2D information to another D2D UE by D2D channel simultaneously, it is contemplated that ACK and NACK
Importance, if ACK/NACK information correspond to ACK, UE only send honeycomb channel without send D2D channel, and if ACK/
Nack message corresponds to NACK, then UE only sends D2D channel without sending honeycomb channel.
About the fourth embodiment of the present invention, referring to Fig.1 1 is described the operation of UE.
In Figure 11, when UE starts operation in step 1101, in step 1102, UE prepares the transmission of D2D information.?
In step 1103, if desired, then UE prepares the transmission of cellular information.In the case, in step 1103 about transmission
The information of preparation may include information included in PUCCH.
Then, in step 1104, UE determines the need for the transmission of uplink control information (PUCCH).When being not required to
When PUCCH being wanted to send, UE sends D2D information in a step 1106, then end operation in step 1108.In contrast, when
UE has been determined when PUCCH being needed to send, and UE determines that ACK/NACK information included in PUCCH is again in step 1105
ACK or NACK.
At this point, UE continues step 1107 to send PUCCH when ACK/NACK information corresponds to ACK.Compared to it
Under, when ACK/NACK information corresponds to NACK, UE continues step 1106 to send D2D information.
UE sends D2D information without sending PUCCH information in a step 1106, and PUCCH is sent in step 1107
Information is without sending D2D information.
After step 1106 and step 1107, UE end operation in step 1108.
5th embodiment: simultaneous honeycomb channel is sent and the received selection of D2D channel
In this example, it is assumed that a UE sends reversed cellular information to BS by honeycomb channel, and at the same time passing through
D2D channel sends D2D information to another D2D UE.
UE cannot be performed simultaneously by same frequency band and be sent and received.Therefore, in the present invention, when needing UE while sending bee
When nest channel and reception D2D channel, operation is possible below.Preferably, UE is selected selected by the execution together of following operation
That.
1. reception D2D channel
2. transmission honeycomb channel
3. only being received from D2D channel according to the setting of BS and selecting one in the transmission with honeycomb channel.In the case, BS
It can be sent by system information, the higher level signaling of such as RRC signaling or Physical layer control information to UE, instruction honeycomb letter
Road sends the information of the operation with priority between the reception of D2D channel.
Sixth embodiment: it is sent according to the type selection honeycomb control information that honeycomb controls information and D2D channel receives
In this example, it is assumed that it includes the reversed cellular information of ACK/NACK that a UE, which is sent by honeycomb channel to BS,
And at the same time sending D2D information to another D2D UE by D2D channel.
ACK/NACK information is sent from UE to BS, it is intended that UE notifies BS by ACK/NACK, from the received positive letter of BS
Breath has been successfully received.
When corresponding to the ACK in ACK and NACK to the information that BS is sent from UE, i.e., when positive information has been successfully received
When, ACK information should be sent to BS to avoid additional retransmission.In contrast, correspond to when being sent to BS information by UE
When NACK in ACK and NACK, even if nack message is not sent to BS, BS also executes the retransmission of positive information.Cause
This, the transmission for sending not ACK of NACK is important.
Therefore, in the present embodiment, when a UE sends the cellular information including ACK/NACK to BS by honeycomb channel
And when sending D2D information to another D2D UE by D2D channel simultaneously, it is contemplated that the importance of ACK and NACK, if ACK/NACK
Information correspond to ACK, then UE send honeycomb channel without receive D2D channel, and if ACK/NACK information correspond to NACK,
UE receives D2D channel without sending honeycomb channel.
It 2 will be described referring to Fig.1 according to the order of the operation of the UE of the present embodiment.
In Figure 12, when UE starts operation in step 1201, UE prepares the reception of D2D information in step 1202, and
Prepare the transmission of cellular information when necessary in step 1203.Cellular information in step 1203 may include being wrapped in PUCCH
The information included.
In step 1204, UE determines the need for the transmission of PUCCH.As determining result, when do not need PUCCH send
When, UE receives D2D information in step 1206, then the end operation in step 1208.
In contrast, when UE has been determined, and PUCCH is needed to send, UE is determined wrapped in PUCCH again in step 1205
Whether the ACK/NACK information included is ACK.At this point, when ACK/NACK information correspond to ACK when, UE continue step 1207 with
Send PUCCH.In contrast, when ACK/NACK information corresponds to NACK, UE continues step 1206 to send D2D letter
Breath.
UE receives D2D information without sending PUCCH information in step 1206, and PUCCH is sent in step 1207
Information is without receiving D2D information.When step 1206 or step 1207 are completed, the UE end operation in step 1208.
According to an embodiment of the invention, executing the state energy of the UE experience receiving sensitivity degradation phenomena of conventional cellular communication
It is enough to be avoided by controlling the transmission power of the UE of execution D2D communication.According to another embodiment of the present invention, a UE is being needed
The operation for being performed simultaneously the UE in the case that cellular communication and D2D are communicated can be clearly defined.
The embodiment of the present invention disclosed in the present specification and attached drawing are used for the purpose of being easily described skill of the invention
Art content and help understand specific example of the invention, but the present invention is not limited thereto.To technology people of the art
Member is it is readily apparent that the embodiment of other modifications other than the embodiment disclosed herein can be based on technology of the invention
Spirit is made.
Claims (12)
1. a kind of method for sending power by terminal control in a wireless communication system, which comprises
Identification uplink is sent and whether secondary link transmission distributes in transmission time interval (TTI)；
In the case where transmission in TTI without distribution uplink, secondary chain is sent to another terminal in TTI based on transmission power
Road is sent；And
In the case where distributing uplink transmission and secondary link transmission in TTI, uplink is sent to base station in TTI and is sent out
It send.
2. it includes sending discovery signal, control information sum number that the method for claim 1, wherein the secondary link, which is sent,
At least one of according to.
3. the method as described in claim 1,
Wherein, in the case where uplink transmission and secondary link transmission are distributed in TTI, pair link hair is not sent to another terminal
It send, and
Wherein, the transmission power sent for secondary link is that the first transmission power and second send in power lesser one.
4. method as claimed in claim 3, further includes:
Power control relevant information is received from base station,
Wherein, the first transmission is determined based on the number of the resource block of imparting, path loss and received power control relevant information
Power.
5. method as claimed in claim 3, wherein the second transmission power is that the maximum sent for secondary link can use hair
Send power.
6. method as claimed in claim 4, wherein the path loss is based on the information needle provided from base station by signaling
Serving cell is determined.
7. a kind of in a wireless communication system for controlling the terminal for sending power, the terminal includes:
Transceiver is configured as sending and receiving signal；And
Controller is configured as:
Identification uplink is sent and whether secondary link transmission distributes in transmission time interval (TTI)；
In the case where transmission in TTI without distribution uplink, secondary chain is sent to another terminal in TTI based on transmission power
Road is sent；And
In the case where distributing uplink transmission and secondary link transmission in TTI, uplink is sent to base station in TTI and is sent out
It send.
8. terminal as claimed in claim 7, wherein it includes sending discovery signal, control information sum number that the pair link, which is sent,
At least one of according to.
9. terminal as claimed in claim 7,
Wherein, in the case where uplink transmission and secondary link transmission are distributed in TTI, pair link hair is not sent to another terminal
It send, and
Wherein, the transmission power sent for secondary link is that the first transmission power and second send in power lesser one.
10. terminal as claimed in claim 9, wherein the controller is additionally configured to receive power control correlation from base station
Information, and
Wherein, the first transmission is determined based on the number of the resource block of imparting, path loss and received power control relevant information
Power.
11. terminal as claimed in claim 9, wherein the second transmission power is that the maximum sent for secondary link can be used
Send power.
12. terminal as claimed in claim 10, wherein the path loss is based on the information provided from base station by signaling
It is determined for serving cell.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20130016488 | 2013-02-15 | ||
| KR10-2013-0016488 | 2013-02-15 | ||
| KR1020140014221A KR102213461B1 (en) | 2013-02-15 | 2014-02-07 | Method and apparatus for power control and multiplexing for device to device communication in wirelss cellular communication system |
| KR10-2014-0014221 | 2014-02-07 | ||
| PCT/KR2014/001271 WO2014126435A1 (en) | 2013-02-15 | 2014-02-17 | Method and apparatus for power control and multiplexing for device to device communication in wireless cellular communication system |
| CN201480009027.5A CN105027639B (en) | 2013-02-15 | 2014-02-17 | The method and apparatus for carrying out power control and multiplexing are communicated in radio honeycomb communication system to device-to-device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201480009027.5A Division CN105027639B (en) | 2013-02-15 | 2014-02-17 | The method and apparatus for carrying out power control and multiplexing are communicated in radio honeycomb communication system to device-to-device |
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| Publication Number | Publication Date |
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| CN110267340A true CN110267340A (en) | 2019-09-20 |
| CN110267340B CN110267340B (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910444564.7A Active CN110267340B (en) | 2013-02-15 | 2014-02-17 | Terminal for controlling transmission power in wireless communication system and method thereof |
| CN201480009027.5A Active CN105027639B (en) | 2013-02-15 | 2014-02-17 | The method and apparatus for carrying out power control and multiplexing are communicated in radio honeycomb communication system to device-to-device |
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| CN201480009027.5A Active CN105027639B (en) | 2013-02-15 | 2014-02-17 | The method and apparatus for carrying out power control and multiplexing are communicated in radio honeycomb communication system to device-to-device |
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| JP (3) | JP6476135B2 (en) |
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| KR101481580B1 (en) * | 2008-12-05 | 2015-01-13 | 엘지전자 주식회사 | An uplink power control method for a system using ofdm/sc-fdm |
| KR102525770B1 (en) * | 2016-06-15 | 2023-04-26 | 삼성전자주식회사 | Apparatus and method for positioning terminal in wireless communicatnon system |
| WO2018053808A1 (en) * | 2016-09-23 | 2018-03-29 | 富士通株式会社 | Power control method and device, and communication system |
| BR112019026633A2 (en) * | 2017-06-16 | 2020-06-30 | Telefonaktiebolaget Lm Ericsson (Publ) | wireless device and related method, transmission point and related method and computer readable memory |
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| JP2019068486A (en) | 2019-04-25 |
| JP2016513407A (en) | 2016-05-12 |
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| JP6843901B2 (en) | 2021-03-17 |
| JP7321199B2 (en) | 2023-08-04 |
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| CN110267340B (en) | 2022-05-17 |
| JP2021090218A (en) | 2021-06-10 |
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