CN103548398A - Method for controlling uplink transmission power by a terminal that adopts a time division duplex (TDD) scheme in a wireless communication system, and terminal device thereof - Google Patents

Abstract

Disclosed are a method for controlling uplink transmission power by a terminal that adopts a time division duplex (TDD) scheme in a wireless communication system, and a terminal device thereof. The method for controlling uplink transmission power by a terminal that adopts a TDD scheme in a wireless communication system comprises the steps of: determining, when the ratio of the number of downlink subframes to the number of uplink subframes changes in said TDD scheme, uplink transmission power to be transmitted from at least one uplink subframe within a changed first frame; and transmitting an uplink signal in said at least one uplink subframe according to said determined uplink transmission power.

Description

In wireless communication system by the method and the terminal installation thereof that adopt the terminal control uplink transmission power of time division duplex (TDD) scheme

Technical field

The present invention relates to radio communication, and more specifically, relate to a kind of method and equipment thereof of being controlled up-link transmission power in wireless communication system by the subscriber equipment that uses time division duplex (TDD) scheme.

Background technology

3GPP LTE(third generation partner program Long Term Evolution, is abbreviated as LTE hereinafter) communication system is schematically interpreted as the present invention and is applied to the example of its wireless communication system.

Fig. 1 is the schematic diagram as the E-UMTS network configuration of an example of wireless communication system.

The Universal Mobile Telecommunications System of E-UMTS(evolution) be from traditional UMTS(Universal Mobile Telecommunications System) system of evolution.Current, for the basic standardization work of E-UMTS, just by 3GPP, undertaken.E-UMTS is commonly called LTE system.For the detailed content of the technical specification of UMTS and E-UMTS respectively with reference to " 3 ^rdgeneration partnership project; Technical specification group radio access network(third generation partner program, technical specification group radio access network) " version 8 and version 9.

With reference to figure 1, the access network (being abbreviated as hereinafter AG) that E-UMTS comprises subscriber equipment (UE), base station (BS) and is connected to external network to be positioned at the mode of the end of network (E-UTRAN).The multiple data stream for broadcast service, multicast service and/or unicast services can be launched in base station simultaneously.

A base station comprises at least one community.Community offers a plurality of subscriber equipmenies by of being set in the bandwidth of 1.25MHz, 2.5MHz, 5MHz, 10MHz, 15MHz and 20MHz by downlink transmission service or ul transmissions service.Different communities can be configured to the bandwidth that provides respectively corresponding.Base station controls to/from the transfer of data/reception of a plurality of subscriber equipmenies.For down link (being abbreviated as hereinafter DL) data, base station notifies time/frequency region, coding, size of data, the HARQ(mixing of transmitting data thereon of corresponding subscriber equipment automatically to repeat and request by transmitting DL schedule information) for information about etc.And, for up link (being abbreviated as hereinafter UL) data, base station is mixed and is automatically repeated and request by the spendable time/frequency of corresponding subscriber equipment region, coding, size of data, HARQ(by UL schedule information being transmitted into the corresponding subscriber equipment of corresponding notification of user equipment) for information about etc.Between base station, can use the interface for delivery of user traffic or service control transmission.Core network (CN) is by the AG(IAD of user registration for subscriber equipment etc.) and network node form.AG is by the TA(tracing area being comprised of a plurality of communities) the mobility of unit management subscriber equipment.

Based on WCDMA(Wideband Code Division Multiple Access (WCDMA)) wireless communication technology developed into LTE.But user and service provider's demand and expectation increase always.In addition, because different types of radio access technologies development, so the technology evolution that will look for novelty is to have in the future competitiveness.Require the reduction of every bit cost, the increase of service availability, frequency band is used flexibly, the simple interface of structure/opening and the reasonable power consumption of subscriber equipment etc. to be to have competitiveness in future.

Recently, the standardization of the next-generation technology of ongoing LTE is carried out by 3GPP.So in this manual technology will be named as LTE-A.One of main distinction between LTE system and LTE-A system can comprise the employing of system bandwidth difference and via node.

The target of LTE-A system is to support the broadband of maximum 100MHz.For this reason, LTE-A system is used carrier aggregation or bandwidth polymerization to realize the broadband of using a plurality of frequency chunks.

According to carrier aggregation, a plurality of frequency chunks are used as a wide logic frequency band to use wider frequency band.The bandwidth of system block that can be based on being used by LTE system limits the bandwidth of each frequency chunks.Use component carrier to launch each frequency chunks.

Summary of the invention

Technical assignment

The technical assignment that is intended to realize by the present invention is, a kind of method of controlling up-link transmission power is provided, its in wireless communication system by using the subscriber equipment of time division duplex (TDD) scheme to control.

Another technical assignment that is intended to realize by the present invention is to provide the subscriber equipment that a kind of use time division duplex (TDD) scheme is controlled up-link transmission power.

From the obtainable technical assignment of the present invention, do not limit above-mentioned technical assignment.And the those of ordinary skill of the technical field under the present invention can be expressly understood other NM technical assignment from description below.

Technical solution

In order to realize the advantage of these and other and according to object of the present invention, as specialized and describing widely, a kind of method of controlling up-link transmission power according to changing system information, its in wireless communication system by using TDD(time division duplex) subscriber equipment of scheme controls, the method comprises the steps:, if the ratio of the number of downlink subframe and the number of uplink sub-frames changes in TDD scheme, to determine the up-link transmission power of launching at least one uplink sub-frames in reformed the first frame; With according to the up-link transmission power of being determined transmission of uplink signal at least one uplink sub-frames.The emissive power control command (TPC order) using in frame before the ratio of number that can be based in downlink subframe and the number of uplink sub-frames is changed, most recently used TPC order, by TPC order or the definite up-link transmission power of being determined of acquiescence TPC order of the control information indication that receives recently.At least one uplink sub-frames can comprise the first uplink sub-frames in the first frame.The number of at least one uplink sub-frames or position can change according to the ratio of the number of the number of the ratio of the number of the number of the downlink subframe before changing and uplink sub-frames and reformed downlink subframe and uplink sub-frames.Acquiescence TPC order can be corresponding to predetermined value between subscriber equipment and base station.

In order further to realize the advantage of these and other and according to object of the present invention, a kind ofly using TDD(time division duplex) subscriber equipment of controlling up-link transmission power during scheme in wireless communication system can comprise, processor, if the ratio of the number of downlink subframe and the number of uplink sub-frames changes in TDD scheme, this processor is configured to determine the up-link transmission power of launching at least one uplink sub-frames in reformed the first frame; And reflector, this reflector is configured to according to the up-link transmission power of being determined transmission of uplink signal at least one uplink sub-frames.The emissive power control command (TPC order) using in frame before the ratio of number that can be based in downlink subframe and the number of uplink sub-frames is changed, most recently used TPC order, by TPC order or the definite up-link transmission power of being determined of acquiescence TPC order of the control information indication receiving recently.At least one uplink sub-frames can comprise the first uplink sub-frames in the first frame.The number of at least one uplink sub-frames or position can change according to the ratio of the number of the number of the ratio of the number of the number of the downlink subframe before changing and uplink sub-frames and reformed downlink subframe and uplink sub-frames.Acquiescence TPC order can be corresponding to predetermined value between subscriber equipment and base station.

Beneficial effect

According to various embodiments of the present invention, subscriber equipment can as one man be carried out ul transmissions at the place, front and back that reconfigures border of system information.

From the obtainable effect of the present invention, be not limited to above-mentioned effect.And, according to description below, can be expressly understood other NM effect the those of ordinary skill of the technical field under the present invention.

Accompanying drawing explanation

Accompanying drawing is included to provide further understanding of the present invention, and merged and form the part of this specification, and accompanying drawing illustrates embodiments of the invention and together with the principle of the present invention that lays down a definition for describing.

Fig. 1 is the schematic diagram as the E-UMTS network configuration of an example of wireless communication system;

Fig. 2 is the block diagram for the base station 205 of wireless communication system 200 and the configuration of subscriber equipment 210;

Fig. 3 is the figure for an example of the radio frame structure using in 3GPP LTE/LTE-A system of an example as wireless communication system;

Fig. 4 is the figure for the example of the resource grid of the downlink time slots of the 3GPP LTE/LTE-A system of an example as wireless communication system;

Fig. 5 is the figure for the downlink subframe structure of the 3GPP LTE system of an example as wireless communication system;

Fig. 6 is the figure for the uplink subframe structure of the 3GPP LTE system of an example as wireless communication system;

Fig. 7 is the figure of the example of carrier aggregation (CA) communication system;

Fig. 8 is for explaining the exemplary figure of the system change of LTE system;

Fig. 9 is for explaining the figure for the reference timing of TPC order; And

Figure 10 solves the exemplary figure depend on the in the situation that of TDD DL/UL configuration change for the problem of the reference timing relationship generation of TPC order.

Embodiment

To at length introduce the preferred embodiments of the present invention now, illustrate in the accompanying drawings its example.In following detailed description of the present invention, comprise and help to fully understand details of the present invention.But, not it will be apparent to one skilled in the art that in the situation that there is no these details and can implement the present invention.For example, although hypothesis comprises that in mobile communication system 3GPP LTE/LTE-A system at length carries out following description, except unique feature of 3GPP LTE/LTE-A system, it is applicable to other random mobile communication system.

Sometimes, in order to prevent that the present invention from thickening, for structure and/or the equipment of public domain is skipped, or can be expressed as the block diagram of the Core Feature that concentrates on structure and/or equipment.As possible, running through this accompanying drawing will use identical Reference numeral to refer to identical or similar part.

In addition, in the following description, suppose that subscriber equipment (UE) is the adopted name of mobile or fixing user class equipment, terminal, mobile radio station (MS), advanced mobile station (AMS) etc.And, suppose that base station (BS) is the adopted name with such random node of the network level of terminal communication such as Node B (NB), e Node B (eNB), access point (AP) etc.

In mobile communication system, subscriber equipment can receive information in down link from base station, and in up link, information transmitting is arrived to base station.By subscriber equipment, launched or the information that receives comprises data and various control information.And, can there are various physical channels in type and purposes according to the information of launching by subscriber equipment or receiving.

Fig. 2 is the block diagram for the configuration of the base station 205 at wireless communication system 200 and subscriber equipment 210.

Although a base station 205 shown in the drawings and a subscriber equipment 210 are to schematically show wireless communication system 200, wireless communication system 200 can comprise at least one base station and/or at least one subscriber equipment.

With reference to figure 2, base station 205 can comprise transmitting (Tx) data processor 215, Symbol modulator 220, reflector 225, dual-mode antenna 230, processor 280, memory 285, receiver 290, symbol demodulator 295 and receive data processor 297.And subscriber equipment 210 can comprise transmitting (Tx) data processor 265, Symbol modulator 270, reflector 275, dual-mode antenna 235, processor 255, memory 260, receiver 240, symbol demodulator 255 and receive data processor 250.Although describe base station 205 and subscriber equipment 210 in the accompanying drawings, comprise respectively an antenna 230/235, each in base station 205 and subscriber equipment 210 comprises a plurality of antennas.Therefore, according to base station 205 of the present invention and subscriber equipment 210, support MIMO(multiple-input and multiple-output) system.And SU-MIMO(Single User MIMO can be supported in base station 205 according to the present invention) and MU-MIMO(multiuser MIMO) scheme.

In down link, transmit data processor 215 receives business datum, the business datum that format receives, encoded traffic data, the business datum that interweaves and be encoded, the data that modulation (or sign map) is interleaved, and modulated symbol (" data symbol ") is then provided.Symbol modulator 220 is by receiving and deal with data symbol and frequency pilot sign provide the stream of symbol.

Symbol modulator 220 is multiplex data symbol and frequency pilot sign and then the symbol being re-used is transmitted into reflector 225 together.While doing like this, each symbol being launched can comprise the signal of data symbol, frequency pilot sign or zero (that is, sky) value.In each symbol duration, can launch continuously frequency pilot sign.While doing like this, frequency pilot sign can comprise the symbol of frequency division multiplexing (FDM), OFDM (OFDM), Time Division Multiplexing or code division multiplexing (CDM).

The stream of reflector 225 receiving symbols, change the circulation receiving at least one or a plurality of analog signal, additionally regulate this analog signal (for example, amplification, filtering, up-conversion etc.), and then generate the down link signal that is suitable for the transmission in radio channel.Subsequently, via transmitting antenna 230, downlink signal transmissions is arrived to subscriber equipment.

In the configuration of subscriber equipment 210, reception antenna 235 is from base station receiving downlink signal and then the signal receiving is offered to receiver 240.Receiver 240 regulates the signal (for example, filtering, amplification and down-conversion) receiving, the signal that digitlization is conditioned, and then obtain sampling.The frequency pilot sign that symbol demodulator 245 demodulation receive and then provide it to processor 255 for channel estimating.

The frequency resource assessed value that symbol demodulator 245 receives for down link from processor 255, by the data symbol executing data modulation to receiving, obtain data symbol assessed value (, and then data symbol assessed value is offered to reception (Rx) data processor 250 assessed value of data symbol of transmitting).Receive data processor 250 and rebuild by data symbol assessed value is carried out to demodulation (that is, symbol de-maps, deinterleaving and decoding) business datum being launched.

Processing by symbol demodulator 245 in base station 205 and be respectively supplementing the processing by modulator 220 and the processing by transmit data processor 215 by receiving the processing of data processor 250.

About the subscriber equipment 210 in up link, transmit data processor 265 provides data symbol by processing business datum.Symbol modulator 270 passes through to receive data symbol, the multiplexing data symbol receiving, and then the symbol execution modulation being re-used is offered to reflector 275 by the stream of symbol.By the stream of receiving symbol and then reflector 275, is processed the stream generating uplink signal receiving.Then via transmitting antenna 235, the uplink signal of generation is transmitted into base station 205.

In base station 205, via reception antenna 230 from subscriber equipment 210 receiving uplink signals.The uplink signal that receiver 290 receives by processing obtains sampling.Subsequently, the sampling that symbol demodulator 295 obtains by processing provides frequency pilot sign and the data symbol assessed value receiving in up link.Receiving data processor 297 rebuilds from the business datum of subscriber equipment 210 transmittings by deal with data symbol assessed value.

The operation of the processor 255/280 guides user equipment/base station 210/205 of subscriber equipment/base station 210/205 (for example, control, regulate, manage etc.).Processor 255/280 can be connected to memory cell 260/285, and this memory cell 260/285 is configured to program code stored and data.Memory cell 260/285 is connected to processor 255/280 with storage operation system, application and generic-document.

Processor 255/280 can be called as in controller, microcontroller, microprocessor, microcomputer etc.And, can realize processor 255/280 with hardware, firmware, software and/or its any combination.By in the realization of hardware, processor 255/280 can be provided with ASIC(application-specific integrated circuit (ASIC)), DSP(digital signal processor), DSPD(digital signal processing device), PLD(programmable logic device), FPGA(field programmable gate array) etc. in one.

Meanwhile, in the situation that using firmware or software to realize embodiments of the invention, firmware or software can be configured to comprise for carrying out the function of explaining of the present invention or module, process and/or the function of operation in the above.And, be configured to realize firmware of the present invention or software and be loaded in processor 255/280 or be stored in the memory 260/285 that will drive by processor 255/280.

Based on for the well-known OSI(open system interconnection of communication system) 3 lower floors of model, the layer of the radio protocol between subscriber equipment and base station can be classified into ground floor L1, second layer L2 and the 3rd layer of L3.Physical layer belongs to ground floor and provides information transfer service via physical channel.RRC(radio resource is controlled) layer belongs to the 3rd layer and control radio resource is provided between UE and network.Subscriber equipment and base station can be used rrc layer mutually to exchange RRC message via radio circuit.

Fig. 3 is the figure for an example of the radio frame structure using in 3GPP LTE/LTE-A system of an example as wireless communication system.

In cellular OFDM radio packet communication system, UL/DL (uplink/downlink) data packet transfer is carried out by the unit of subframe.And a subframe is defined as comprising the predetermined time interval of a plurality of OFDM symbols.In 3GPP LTE standard, type 2 radio frame structures of supporting to be applicable to the Class1 radio frame structure of FDD (Frequency Division Duplexing (FDD)) and being applicable to TDD (time division duplex).

Fig. 3 (a) is the figure for the downlink radio frame structure of Class1.DL (down link) radio frame comprises 10 subframes.Each subframe comprises 2 time slots in time domain.And the time of launching a subframe cost is defined as Transmission Time Interval (being abbreviated as hereinafter TTI).For example, subframe can have the length of 1ms and the length that time slot can have 0.5ms.A time slot can comprise a plurality of OFDM symbols in time-domain, and in frequency domain, can comprise a plurality of Resource Block (RB).Because 3GPP LTE system is used OFDM in down link, OFDM symbol is provided to indicate a mark space.OFDM symbol can be by name SC-FDMA symbol or mark space.Resource Block (RB) is resource allocation unit, and can comprise a plurality of continuous subcarriers in a time slot.

The number that is included in OFDM symbol in a time slot can be according to CP(Cyclic Prefix) configuration and change.CP can be classified into expansion CP and normal CP.For example, in the situation that OFDM symbol is configured by normal CP, the number that is included in an OFDM symbol in time slot can be 7.At OFDM symbol by expanding CP configuration in the situation that, because the length of an OFDM symbol increases, so be included in the number of OFDM symbol that the number of an OFDM symbol in time slot can be less than the situation of normal CP.The in the situation that of expansion CP, for example, the number that is included in OFDM symbol in a time slot can be 6.For example, if channel status is unsettled (, UE is with high-speed mobile), it can use expansion CP further to reduce intersymbol interference.

When using normal CP, because a time slot comprises 7 OFDM symbols, so a subframe comprises 14 OFDM symbols.In this case, 3 OFDM symbols above of each subframe can be distributed to PDCCH (physical downlink control channel) at most, and remaining OFDM allocation of symbols is to PDSCH (physical down link sharing channel) simultaneously.

Fig. 3 (b) is the figure for the downlink radio frame structure of type 2.Type 2 radio frames comprise 2 fields (half frame).Each field comprises 5 subframes, DwPTS (down link pilot timeslot), GP (protective time slot) and UpPTS (uplink pilot time slot).Each subframe comprises 2 time slots.DwPTS is used in subscriber equipment search of initial zone, synchronous or channel estimating.UpPTS is used in base station channel estimating, and the ul transmissions of match user equipment is synchronous.Protective time slot is to cause the period of the interference that produces in up link for eliminating between up link and down link multidiameter due to down link signal.

Each in field has 5 subframes.In each subframe of radio frame; " D " indication is for the subframe of DL transmission; " U " indication is for the subframe of UL transmission, and " S " indication has the special subframe of DwPTS (down link pilot timeslot), GP (protective time slot) and UpPTS (uplink pilot time slot).DwPTS is used to the search of initial zone in subscriber equipment, synchronous or channel estimating.It is synchronous that UpPTS is used to the ul transmissions of channel estimating in base station and subscriber equipment.Protective time slot is to postpone to cause producing in up link the period of disturbing for eliminating the multipath due to down link signal between up link and down link.

At 5ms DL-UL switching point, the in the situation that of the cycle, in each field, there is special subframe (S).At 10ms DL-UL switching point, the in the situation that of the cycle, only in first field, there is special subframe (S).In all configurations, the 0th subframe, the 5th subframe and DwPTS are the intervals only providing for DL transmission.UpPTS and with the subframe of the direct adjacency of special subframe be the interval for UL transmission.In the situation that Duo community is aggregated, can suppose that subscriber equipment has for the identical UL-DL configuration of all communities and the protective time slot of special subframe and the overlapping at least 1456TS of protective time slot of the special subframe in another community of community.The said structure of radio frame is only exemplary.And, be included in the number of the subframe in radio frame, the number that is included in the number of the time slot in subframe and is included in the symbol in time slot can be revised in every way.

Table 1 is illustrated in the length of DwPTS, protective time slot and UpPTS in special subframe.

[table 1]

Table 2 illustrates UL-DL configuration.

[table 2]

Reference table 2, in the frame structure type 2 of 3GPP LTE system, UL-DL configuration can be classified into 7 types.And configuration is separately mutually different in the position of DL subframe, special subframe and UL subframe or number.Various embodiment of the present invention are described in the UL-DL configuration of frame structure type 2 that in the following description, will be based on shown in table 2.

The structure of above-mentioned radio frame is only exemplary.And be included in the number of the subframe in radio frame, the number that is included in the number of the time slot in subframe and is included in the symbol in time slot can be revised in every way.

Fig. 4 is the figure for the example of the resource grid of the downlink time slots of the 3GPP LTE/LTE-A system of an example as wireless communication system.

With reference to 4, one down links of figure (DL) time slot, in time domain, comprise a plurality of OFDM symbols.Especially, a DL time slot comprises 7(6) individual OFDM symbol and a Resource Block (RB) comprise 12 subcarriers at frequency domain.Each element on resource grid is called as resource element (being abbreviated as hereinafter RE).A Resource Block comprises 12 * 7 (6) individual resource elements.Be included in the number N of the Resource Block in DL time slot _rBcan depend on DL transmission bandwidth.And the structure of up link (UL) time slot can be replaced by SC-FDMA symbol with the identical of DL time slot and OFDM symbol.

Fig. 5 is the figure for the downlink subframe structure of the 3GPP LTE system of an example as wireless communication system.

With reference to figure 5, maximum 3(4 of first time slot in DL subframe) individual preceding OFDM symbol is corresponding to for distributing control channel to its controlled area, and remaining OFDM symbol is corresponding to for distributing PDSCH (physical down link sharing channel) to its data field.The DL(down link using in LTE system) control channel comprises PCFICH (physical control format indicator channel), PDCCH (physical downlink control channel), PHICH (physical mixed ARQ indicator channel) etc.The PCFICH carrying of carrying on an OFDM symbol of subframe is about being used to control in subframe the information of number of the OFDM symbol of transmission.PHICH is in response to UL transmission bearer HARQ ACK/NACK(mixed automatic repeat request acknowledgement/non-acknowledgement) signal.

The control information of carrying on PDCCH can be called as down link control information (DCI: down link is controlled designator).By 0 the formal definition DCI form for up link and by for down link 1, the formal definition DCI form of 1A, 1B, 1C, 1D, 2,2A, 3,3A etc.According to purposes DCI form, can optionally comprise frequency hopping mark, RB assignment, MCS(Modulation and Coding Scheme), RV(redundancy versions), NDI(new data indicator), TPC(transmitting power controls), cyclic shift DM RS(demodulated reference signal), CQI(channel quality information) request, HARQ treating number, TPMI(launch precoding matrix indicators), PMI(precoding matrix indicators) confirmation etc.

PDCCH can carry DL-SCH(downlink sharied signal channel) transformat and resource allocation information, UL-SCH(uplink shared channel) transformat and resource allocation information, about PCH(paging channel) paging information, system information about DL-SCH, resource allocation information such as the upper strata control message of the accidental access response of launching on PDSCH, transmitting (Tx) power control command for the single subscriber equipment setting in subscriber equipment (UE) group, transmitting (Tx) power control command, the VoIP(networking telephone) activation indication information etc.In control area, can launch a plurality of PDCCH and subscriber equipment can monitor a plurality of PDCCH.In the polymerization of a plurality of continuous control channel elements (CCE), launch PDCCH.CCE is used to provide to PDCCH according to the state of radio channel the logic assignment unit of code check.CCE is corresponding to a plurality of REG(resource element groups).Depend on that the form of number P DCCH of CCE and the number of the bit of PDCCH are determined.Base station according to the DCI that is transmitted to subscriber equipment, determine PDCCH form and by CRC(Cyclical Redundancy Check) be attached to control information.According to the owner of PDCCH or purposes CRC is masked an identifier (being called as RNTI(radio net temporary identifier)).Specific subscriber equipment provides PDCCH if, and CRC can maskedly have the identifier of corresponding subscriber equipment, that is, and and C-RNTI(Ji， community-RNTI).As different examples, beep-page message provides PDCCH if, and CRC can maskedly have paging identifier (for example, P-RNTI(paging-RNTI)).System information if, and more specifically, for system information block (SIB) provides PDCCH, CRC can maskedly have system information identifier (for example, SI-RNTI(system information-RNTI)).Accidental access response provides PDCCH if, and CRC can access at random-RNTI of the masked RA-RNTI(of having).

Fig. 6 is the figure for the uplink subframe structure of the 3GPP LTE/LTE-A system of an example as wireless communication system.

With reference to figure 6, uplink sub-frames comprises a plurality of time slots (for example, 2 time slots).Time slot can comprise the SC-FDMA symbol of different numbers according to CP length.UL subframe can be divided into data field and controlled area in frequency domain.This data field comprises PUSCH, and can be used to the data-signal of transmitting such as audio frequency etc.Controlled area comprises PUCCH, and can be used in transmitting UL control information (UCI).PUCCH comprises the RB couple at the two ends place that is positioned at the data field on frequency axis, and on the border of time slot frequency hopping.

PUCCH can be used to launch following control information.

-SR (dispatch request): this information is used for asking up link UL-SCH resource.Use OOK(on-off keying) scheme is launched this information.

-HARQ ACK/NACK: for the response signal of the downlink data packet on PDSCH.Whether this information indicating downlink link data grouping is successfully received.In response to single down link code word, launch ACK/NACK1 bit and launch ACK/NACK2 bit in response to two down link code words.

-CQI (CQI): about the feedback information of downlink channel.MIMO(multiple-input and multiple-output) relevant feedback information comprises RI (order designator), PMI (precoding matrix indicators), PTI (precoding type indicator) etc.20 bits of each subframe are used to this information.

According to the number that can be used for the SC-FDMA symbol of emission control information, can determine the quantity of the control information that can be launched by UE in subframe.The SC-FDMA that can be used for emission control information means in subframe remaining SC-FDMA symbol except the SC-FDMA symbol for transmitted reference signal.In the situation that the subframe that SRS (detection reference signal) is configured to, the last SC-FDMA symbol of this subframe is also excluded.Reference signal is used to detect the relevant of PUCCH.PUCCH depends on the 7 kinds of forms of information support that are launched.

Table 3 indication mapping relations between PUCCH form and UCI in LTE.

[table 3]

PUCCH form	UL control information (UCI)
		Form 1	SR (dispatch request) (non-modulation waveform)
Form 1a	The HARQ ACK/NACK of 1 bit (SR presence/absence)
		Form 1b	The HARQ ACK/NACK of 2 bits (SR presence/absence)
Form 2	CQI (20 coded-bits)
		Form 2	CQI and 1 bit or 2 bit HARQ ACK/NACK (20 bits) (being only applied to expand CP)
Form 2a	The HARQ ACK/NACK of CQI and 1 bit ((20+1) individual coded-bit)
		Form 2b	The HARQ ACK/NACK of CQI and 2 bits ((20+2) individual coded-bit)

Fig. 7 is the figure for the example of carrier aggregation (CA) communication system.

LTE-A system is to collect a plurality of uplink/downlink frequencies bandwidth to use the mode of wider frequency bandwidth to use wider uplink/downlink bandwidth to use carrier aggregation (or bandwidth polymerization) technology.Use component carrier (CC) to launch each in little frequency bandwidth.Component carrier can be construed as the carrier frequency (or, centered carrier, centre frequency) of corresponding frequency chunks.

In frequency domain, each component carrier can be mutually continuous or discrete.The bandwidth of CC can be subject to the restriction for the bandwidth of the legacy system of the backward compatibility with legacy system.For example, traditional 3GPP LTE supports the bandwidth of 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz, and LTE-A can be to be used the mode of the aforesaid bandwidth of being supported by LTE to support the bandwidth larger than 20MHz.Can determine individually the bandwidth of each CC.Can carry out asymmetric carrier aggregation, this means the number of DL CC and the number of UL CC is mutually different.DL CC/UL CC link can be configured to be fixed in system or be semi-static.For example, as shown at Fig. 7 (a), in the situation that there is 4 DL CC and 2 UL CC, can configure the DL-UL link corresponding with DL CC:UL CC=2:1.Similarly, as shown at Fig. 7 (b), in the situation that there is 2 DL CC and 4 UL CC, can configure the DL-UL link corresponding with DL CC:UL CC=1:2.Be different from accompanying drawing, can configure symmetrical carrier aggregation, this means the number of DL CC and the number of UL CC is mutually the same.Under these circumstances, can configure the DL-UL link corresponding with DL CC:UL CC=1:1.

Although the whole bandwidth of system is configured with N CC, can be limited to M(<N by the frequency band of specific user equipment monitors/receive) individual CC.For the various parameters of carrier aggregation can by community specifically, UE group specifically or UE specifically configure.Meanwhile, control information can be configured to only on particular channel, receive and dispatch.Particular channel can be called as main CC(PCC) and remaining CC can be called as auxiliary CC(SCC).

LTE-A carrys out managing radio resources by community concept.Combination and UL resource that community is defined as DL and UL resource are not compulsory elements.Therefore, community can be configured with independent DL resource or can be configured with DL resource and UL resource.In the situation that supporting carrier aggregation, the link between the carrier frequency of the carrier frequency of DL resource (or, DL CC) and UL resource (or, UL CC) can be indicated by system information.The community operating in basic frequency (or PCC) is called as main plot (Pcell) and the community that operates in auxiliary frequency (or, SCC) be called as auxiliary community (Scell).

Pcell is used to subscriber equipment and carries out initial process of establishing or the connection reconstruction process of connecting.Pcell can be corresponding to the community of indicating in the process transferring.At RRC(radio resource, control) connect be established after Scell can be configured and can be used to the radio resource that provides additional.Pcell and Scell can be jointly called Serving cell.Therefore, in the situation that subscriber equipment is not configured with carrier aggregation, remain under the state that RRC_ connects or subscriber equipment is not supported carrier aggregation simultaneously, only have a Serving cell that is configured to Pcell.On the contrary, in the situation that subscriber equipment is configured with carrier aggregation and remain on RRC_ connection, there is at least one Serving cell.And Pcell and whole Scell are included in whole Serving cell.For carrier aggregation, after initial safe activation is started, network can configure except Pcell for supporting at least one Scell of the carrier aggregation of subscriber equipment, this Pcell is initially configuration in connecting process of establishing.

Be different from traditional LTE system of using single carrier, the method for using the carrier aggregation of a plurality of component carriers need to effectively manage component carrier.In order effectively to manage component carrier, according to the task of component carrier and characteristic, can classify to component carrier.In component carrier, a plurality of carrier waves can be divided into principal component carrier wave (PCC) and auxiliary component carrier (SCC) and this can be corresponding to the specific parameter of UE.

Principal component carrier wave is in the situation that using a plurality of component carrier, to play the component carrier of the effect at the center of managing component carrier.For each subscriber equipment definition one-component carrier wave.Principal component carrier wave can play the effect of the core carriers of all component carriers being aggregated of management.Auxiliary component carrier can play the frequency resource that provides additional so that the effect of higher transfer rate to be provided.For example, base station can be carried out for the access (RRC) to subscriber equipment signaling via main plot.For the needed information for safety and higher level is provided, main plot also can be used.In fact, if only there is single component carrier, corresponding component carrier will become principal component carrier wave.Under these circumstances, component carrier can play the identical effect with the carrier wave of traditional LTE system.

In the middle of a plurality of component carriers, base station can be by the component carrier being activated (ACC) assignment to subscriber equipment.Subscriber equipment is recognized via signaling etc. the component carrier being activated (ACC) to subscriber equipment by advance assignment.Subscriber equipment collect a plurality of PDCCH for receiving from DL PCell and DL Scell response and can be via UL PCell transmitting response on PUCCH.

In LTE system, system information changes (except ETWS(earthquake and tsunami warning system) and CMAS(business moves warning system)) only generation in specific radio frame (that is the concept of, revising the period is used).In having the modification period of identical content, system information can be launched for several times.Segment boundary while revising by the SFN value definition for SFN mould m=0.(under these circumstances, m indication comprises the number of the radio frame of revising the period).By the system information configuration modification period.When network changes system information (a part), the network user equipment to change of giving advance notice.Especially, network can change system information via revising the period.Network revises at the next one system information that in the period, transmitting is updated.With reference to figure 8, explain above-mentioned general theory in the following description.

Fig. 8 is for explaining the exemplary figure in the system change of LTE system.

With reference to figure 8, the shape of different shades is indicated different system information mutually mutually.If subscriber equipment receiving system information changes notice, the beginning that subscriber equipment can be revised the period from the next one (n+1) obtains new system information immediately.Then, before new system information obtains, subscriber equipment can be applied the system information of previous acquisition.Although Fig. 8 describes the system information be used for revising the period (n), semi-statically change, system information can dynamically change.

In the following description, explain base station dynamically/semi-statically change the time division duplex such as TDD() situation of the system information of DL/UL ratio arrangement.Especially, the present invention explain in base station the situation that changes TDD DL/UL ratio according to the business load of each community send a notice subscriber equipment TDD DL/UL ratio the reformed system information of methods and applications (, TDDDL/UL ratio arrangement) method, this reformed system information is employed to determine UL transmitting power by subscriber equipment.

First, in the following description, determining for the transmitting of subscriber equipment in 3GPP LTE/LTE-A system PUSCH described.Formula 1 is below in the situation that only launching PUSCH, to determine the transmitting power of subscriber equipment, does not launch the formula of PUCCH simultaneously in CA back-up system in the subframe index i of Serving cell c simultaneously.

[formula 1]

$P_{\mathrm{PUSCH}.c}\left(i\right)=\min \left\{\begin{array}{c}{P}_{\mathrm{CMAX}.c}\left(i\right),\\ 10{\log }_{10}\left(M_{\mathrm{PUSCH}.c}\left(i\right)\right)+P_{O\_\mathrm{PUSCH}.c}\left(j\right)+{\mathrm{\&alpha;}}_c\left(j\right)\&CenterDot;{\mathrm{PL}}_c+{\mathrm{\&Delta;}}_{\mathrm{TF}.c}\left(i\right)+f_c\left(i\right)\end{array}\right\}\left[\mathrm{dBm}\right]$

[formula 2]

$P_{\mathrm{PUSCH}.c}\left(i\right)=\min \left\{\begin{array}{c}10{\log }_{10}({\hat{P}}_{\mathrm{CMAX}.c}\left(i\right)-{\hat{P}}_{\mathrm{PUCCH}}\left(i\right)),\\ {10\log }_{10}\left(M_{\mathrm{PUSCH}.c}\left(i\right)\right)+P_{O\_\mathrm{PUSCH}.c}\left(j\right)+{\mathrm{\&alpha;}}_c\left(j\right)\&CenterDot;{\mathrm{PL}}_c+{\mathrm{\&Delta;}}_{\mathrm{TF}.c}\left(i\right)+f_c\left(i\right)\end{array}\right\}\left[\mathrm{dBm}\right]$

Mentioned formula 2 is formula of simultaneously launching the transmitting power of PUCCH and the definite subscriber equipment of PUSCH in CA back-up system in the situation that in the subframe index i of Serving cell c in the above.

The parameter of describing in the necessary formula 1 of UL transmitting power for definite subscriber equipment relevant with Serving cell c and formula 2.

Under these circumstances, the P of formula 1 _cMAX.c(i) the missile maximum transmission power of indication subscriber equipment in subframe index i, and formula 2

indication P _cMAX.c(i) linear value.Formula 2

indication P _pUCCH(i) linear value.Under these circumstances, P _pUCCH(i) the PUCCH transmitting power in indication subframe index i.

In formula 1, M _pUSCH.c(i) be the parameter of indicating the bandwidth of the PUSCH resource distribution representing by the number for the effective Resource Block of subframe i.This parameter is the value by base station assigned.P _{o_PUSCH.c}(j) be the specific nominal component P in community by being provided by upper strata _{o_NOMINAL_PUSCH.c}and the UE certain components P that provides of upper strata (j) _{o_UE_PUSCH.c}(j) parameter of summation configuration.Base station is to this value of notification of user equipment.α _c(j) the indication path loss balancing factor.This is the specific parameter in community providing by upper strata and has launched three bits by base station.α ∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1}, wherein j=0 or 1 and α _c(j)=1, wherein j=2.Base station is to this value of notification of user equipment.

Path loss (PL _c) the DL path of Shi Yi db unit by subscriber devices compute damage (or loss of signal) assessed value and be represented as the RSRP of PLc=referenceSignalPower-higher layer filteredRSRP(PLc=reference signal merit rate – higher level filtering).Under these circumstances, base station can be via upper strata notifying user equipment referenceSignalPower(reference signal power).

F _c(i) be indication for the current PUSCH power of subframe index i control adjustment state value and can be by current absolute value or the value representation of being accumulated.If if the parameter A ccumulation-cnablcd based on being provided by upper strata can accumulate or TPC order δ _{pUSCH, c}be included in PDCCH with had the DCI form 0 of Serving cell c of interim C-RNTI by scrambling for CRC wherein together with, it meets f _c(i)=f _c(i-1)+δ _{pUSCH, c}(i-K _pUSCH).At subframe i-K _pUSCHin on PDCCH, reinstate signaling with DCI form 0/4 or DCI form 3/3A mono-and transmit δ _{pUSCH, c}(i-K _pUSCH).Under these circumstances, f _c(0) be the first value after the value of being accumulated is reset.

By as follows by LTE standard definition K _pUSCHvalue.

About FDD(Frequency Division Duplexing (FDD)), K _pUSCHvalue corresponding to 4.About TDD UL/DL configuration 1-6, in table 4, list K _pUSCHvalue as follows.For TDD UL/DL configuration 0, by the LSB(least significant bit of 1 configuration UL index).If in subframe 2 or 7 with together with the PDCCH of DCI form 0/4, dispatch PUSCH transmission, K _pUSCHvalue corresponding to 7.In table 4, list the K for other PUSCH transmission _pUSCHvalue.

[table 4]

Except DRX situation, subscriber equipment is attempted in each subframe by the PDCCH of the C-RNTI decoding DCI form 0/4 of subscriber equipment or the TPC-PUSCH-RNTI decoding DCI form 3/3A by subscriber equipment with for the DCI form of SPS-TNTI.If DCI form 0/4 and DCI form 3/3A for Serving cell c detected in identical subframe, the δ providing by DCI form 0/4 should be provided subscriber equipment _{pUSCH, c}.If there is no be the TPC order of Serving cell c decoding, DRX situation generation, or i is not the UL subframe in TDD, it meets δ _{pUSCH, c}=0dB.

In table 5, list as follows the δ transmitting by signaling together with DCI form 0/4 on PDCCH _{pUSCH, c}the value of being accumulated.If the PDCCH carrying out together with DCI form 0 is verified or activates release by SPS, it meets δ _{pUSCH, c}=0dB.In table 6 below, the δ transmitting by signaling on PDCCH together with DCI form 3/3A _{pUSCH, c}the value of being accumulated can corresponding to one in the set 1 in table 5 below or can be corresponding to set one in 2, it is determined by the TPC indexing parameter being provided by upper strata.

[table 5]

[table 6]

TPC command field in DCI form 3A	The δ of accumulation PUSCH，c[dB]
		0	-1
1	1

If subscriber equipment reaches the P for Serving cell c _{cMAX, c}, for the positive TPC order of Serving cell c, do not accumulated.If subscriber equipment reaches minimum power, negative TPC order is not accumulated.

For Serving cell c, as P in upper strata _{o_UE_PUSCH.c}(j) when value changes and when subscriber equipment is in main plot during receiving random access response message, the subscriber equipment accumulation of resetting in the following cases.

If the parameter A ccumulation-cnablcd based on being provided by upper strata can not accumulate, it meets f _c(i)=δ _{pUSCH, c}(i-K _pUSCH) under these circumstances, at subframe i-K _pUSCHin on PDCCH, by signaling, transmit δ together with DCI form 0/4 _{pUSCH, c}(i-K _pUSCH).

K _pUSCHvalue as follows.About FDD(Frequency Division Duplexing (FDD)), K _pUSCHvalue corresponding to 4.About TDD UL/DL configuration 1-6, in table 4, list as follows K _pUSCHvalue.For TDDUL/DL configuration 0, by the LSB(least significant bit of 1 configuration UL index).If in subframe 2 or 7 with together with the PDCCH of DCI form 0/4, dispatch PUSCH transmission, K _pUSCHvalue corresponding to 7.In table 4, list the K for other PUSCH transmission _pUSCHvalue.

In aforesaid table 5, list the δ transmitting by signaling on PDCCH together with DCI form 0/4 _{pUSCH, c}the value of being accumulated.If the PDCCH carrying out together with DCI form 0 is verified or activates release by SPS, it meets δ _{pUSCH, c}=0dB.

If there is no with the PDCCH carrying out together with DCI form for Serving cell c decoding, DRX(discontinuous reception) occur, or i is not the UL subframe in TDD, it meets f _c(i)=f _c(i-1).

For f _c(*) (value of being accumulated or current absolute value), the first value is configured as follows.

For Serving cell c, if at upper strata P _{o_UE_PUSCH.c}(j) if value changes or is logical

Cross upper strata and receive P _{o_UE_PUSCH.c}(j) value and Serving cell c are corresponding to auxiliary community, and it meets f _c(0)=0.

On the other hand, if Serving cell corresponding to main plot, it meets f _c(0)=△ P _rampup+ δ _msg2.δ _msg2tPC order and the △ P indicating by accidental access response _rampupcorresponding to from first rising to last leading gross power of being provided by upper strata.

Tradition TDD(time division duplex) multi-cell system has been used single fixing DL/UL ratio.Because identical TDD DL/UL ratio is used in all communities, so DL transmission intercal is identical and UL transmission intercal also starts and finishes in identical timing.By using identical TDD DL/UL ratio, advantage is to minimize the quantity of the interference occurring from adjacent community.But, also there is the problem of situation that is difficult to reflect fully the business load of each community for fixing TDD DL/UL ratio.For this reason, be necessary according to the business load of each community dynamically/semi-statically configure TDD DL/UL ratio and be necessary the system that is suggested of design.

For in TDD system, support for DL/UL ratio dynamically/semi-static system reconfigures, the information that the intrasystem subscriber equipment of notifications reconfigures about system in appointed interval.And, system can notifying user equipment about the reformed system information of the timing being applied to by the reformed configuration of broadcast/unicast scheme (or composition).Under these circumstances, be necessary to support subscriber equipment make subscriber equipment can be in previous system configuration and new system configuration transmitting data as one man.

Depend on that DL/UL ratio TDD system can differently configure feedback information (for example, HARQ feedback, CQI(channel quality information), MIMO dependent feedback etc.) transmit timing.Can configure in every way TDD DL/UL ratio.In order to allow system support various TDD DL/UL ratio arrangement, may be different according to existing in the method detailed of TDD DL/UL ratio.

According to the TDD DL/UL ratio of a plurality of supports of TDD system configuration.Therefore, subscriber equipment can use TDD DL/UL ratio to carry out consistent transfer of data, no matter how TDD DL/UL ratio is changed.Based on receive TPC(transmitting power from base station, control) system carry out UL power and control.Base station can distribute license UE specifically launch TPC order or can TPC order be transmitted into subscriber equipment via set type message via resource.This information can have different message regularly, considers that process lag etc. is according to TDD DL/UL ratio arrangement reflection TPC order.

For example, described at table 2,3GPP LTE/LTE-A system is supported 7 types of TDD DL/UL ratios.And, in the description above, mentioned content and K for DCI form 0/4 _pUSCHregularly.Described at table 4, subscriber equipment can be with reference at subframe i-K _pUSCHin the content of the DCI form 0/4 that receives, with at i subframe (f _c(i)=δ _{pUSCH, c}(i-K _pUSCH)) middle application TPC order.

Therefore, in conventional arrangement or in forming the subscriber equipment of transmitting data require TPC order, with transmitting data unceasingly in newly configuring.And, in order also to require i-K with reference to TPC order for subscriber equipment _pUSCHin DCI form 0/4.Or, must there is the method that can replace said method.

Method, can consider following method as an alternative.Base station is indicated corresponding TPC order via L1/L2 control signal or upper strata independently to subscriber equipment.Or base station is via different schedule informations, DL DCI form or be included in implicit/explicit signaling in different DL DCI forms etc. and use by the information of different DCI form etc. indication and indicate corresponding TPC order to subscriber equipment.

Fig. 9 is for explaining the figure for the reference timing of TPC order.

Explain in the following description the TPC command reference of generation when system configuration becomes another TDD DL/UL configuration except TDD DL/UL configuration 0 from TDD DL/UL configuration 0 regularly.In Fig. 9, the number writing in each subframe means K _pUSCH.

The right half of Fig. 9 is indicated new TDD DL/UL configuration.As described in the accompanying drawings, when using new TDD DL/UL configuration, dotted portion may cause the problem of aspect of the reception of TPC order, and the in the situation that of in launching UL subframe, this is necessary.Especially, for subscriber equipment, require TPC order also to transmit in UL subframe in the new TDD UL/DL configuration changing.Should receive TPC order from DL subframe.But described at Fig. 9, if TDD DL/UL configuration change,, aspect the relation between the TPC command transfer connecting by a dotted line and the transmission of UL signal, problem occurs.Problem is that the subframe for launching for the TPC order of UL subframe becomes UL subframe, is not the DL subframe in the new TDD DL/UL configuration changing.

In order to address the above problem, can consider following method.

Figure 10 solves the in the situation that of TDD DL/UL configuration change, to depend on the exemplary figure of the problem occurring for the reference timing relationship of TPC order.

As example, Figure 10 describes TDD DL/UL configuration and from TDD DL/UL configuration 2, dynamically becomes the situation of TDD DL/UL configuration 3.The method that explanation is dealt with problems, the UL power of the subscriber equipment that it occurs when system configuration when such as TDD DL/UL configuration changes is controlled relevant.This method not only can be applicable to TDD DL/UL configuration and from TDD DL/UL configuration 2, becomes the situation of TDD DL/UL configuration 3, and can be applicable to the situation of various DL/UL configuration changes.Described at Figure 10, according to TDD DL/UL, configuration only may go wrong in the part of radio frame (or subframe).

As the first method, in very first time unit's (radio frame) 1020 of the DL/UL configuration changing, empty part or all (by interval of 4 expressions) of the UL subframe in the first field.Or, as apply the method for appointed radio frame (or subframe) in synchronous HARQ back-up system, if there is transmission again in configure boundaries, subscriber equipment can be carried out transmission again to apply the mode of transmit timing again by application delay factor explicitly.Base station can be via 1/ layer 2, L1/L2(layer) signaling and the upper strata information transmitting that will postpone about appointed radio frame (or subframe) is to subscriber equipment.

As the second method, the present invention proposes subscriber equipment and in the first radio frame 1020 of reformed DL/UL configuration, reuse TPC order or the most recently used TPC order of using in previous UL transmission.Or (the DCI form receiving recently under these circumstances, can be corresponding to UL DCI form can to consider to reuse the TPC order of DCI form by receiving recently indication by subscriber equipment.Or also can consider that the DCI form receiving recently indicated by DL DCI form).Or, can consider that base station is used by the predetermined signaling information of L1/L2 signaling or upper strata to carry out transmission to indicate corresponding TPC order.

As third method, the present invention proposes to be configured in the mode of the TPC order of the acquiescence of using in the situation that reconfigures DL/UL ratio and shares the method by the TPC order of the prior shared acquiescence of subscriber equipment and base station.For example, can not make user with the TPC bid value of acquiescence, be set to 0 mode with reference to the TPC order in the first radio frame 1020 of DL/UL configuration structure that reconfigures change by DL/UL ratio.

As cubic method, the present invention proposes to launch in advance the method for TPC order.Under these circumstances, in reconfiguring front end DL subframe 1015, base station is transmitted into subscriber equipment by TPC order.

Base station is specified the TPC bid value in the first radio frame of reformed DL/UL configuration structure and is added traditional UL DCI form (for example, DCI form 0/4, DCI form 3/3A) (or different DL DCI forms) to and launch the UL DCI form with TPC bid value.Or base station can be transmitted in different between the TPC bid value in the radio frame 1010 of TPC bid value in the first radio frame of reformed DL/UL configuration structure and front end DL/UL configuration structure.Or the value identical with TPC bid value can be launched in base station in the radio frame 1010 of front end DL/UL configuration structure.Or, can consider the method that indicates whether that the TPC order identical with previous TPC order is used or the TPC order of default configuration or new indication is used.

As the method that is transmitted in advance the TPC order of subscriber equipment in front end DL link subframe 1015 by base station that reconfigures that is transmitted in DL/UL configuration structure, can launch with the form of new information form the value of TPC order.Be intended to allow subscriber equipment in configure boundaries, use this value.Can consider to allow the method for base station configuration messages form type as form, group form of message or the specific form in Serving cell of the specific message of UE.

As the 5th method, in configure boundaries, according to TDD DL/UL, configuration reconfigures i-K _pUSCHkPUSCH value in subframe.For example, described at Figure 10, when TDD UL/DL configuration becomes TDD DL/UL and configures 3 from TDD DL/UL configuration 2, the KPUSCH value of the UL subframe in UL subframe index 2 becomes 2,3,6 or 7.The subframe of the problem that the method relation by the configuration with independent that can be applied to having causes.

As shown in Figure 10, TDD DL/UL configuration becomes TDD DL/UL configuration 3 from TDD DL/UL configuration 2, by one of aforesaid 5 kinds of methods, obtained and in a UL subframe, launched the TPC bid value of UL signal, a UL subframe configures in reformed the first radio frame 1020 and represents by a dotted line at TDD DL/UL.And then subscriber equipment is determined UL signal transmission power.Subsequently, because can receive the TPC bid value that will be applied to the second and the 3rd UL subframe (subframe representing by line) in the DL of radio frame 1010 subframe before the change of TDD DL/UL configuration, so it is o.k.

But, be different from Figure 10, if TDD DL/UL configuration differently changes, for example, if TDD DL/UL configuration becomes TDD DL/UL configuration 2 etc. from TDD DL/UL configuration 0, the number of the UL subframe that the TPC order obtaining by subscriber equipment via aforesaid Lung biopsy in reformed the first radio frame will be applied to can change.With reference to figure 9, if the number that TDD DL/UL configuration becomes TDD DL/UL configuration 2, UL subframe from TDD DL/UL configuration 0 is corresponding to 2, if the number that TDD DL/UL configuration becomes TDD DL/UL configuration 3, UL subframe from TDD DL/UL configuration 0 is corresponding to 1, if the number that TDD DL/UL configuration becomes TDD DL/UL configuration 4, UL subframe from TDD DL/UL configuration 0 is corresponding to 2, if the number that TDD DL/UL configuration becomes TDD DL/UL configuration 5, UL subframe from TDD DL/UL configuration 0 is corresponding to 1, and if the number that TDD DL/UL configuration becomes 6 UL subframes of TDD DL/UL configuration from TDD DL/UL configuration 0 is corresponding to 1.

As mentioned in description above, apply the TPC order that obtains by aforesaid Lung biopsy to UL subframe number and in frame to apply TPC order to the position of UL subframe can change according to the various changes of TDD DL/UL configuration.

And about the present invention, when TPC order in UL power control (ULPC) operates with the pattern of being accumulated, the value of being accumulated is in the prior art defined as foloows.For Serving cell c, work as P _{o_UE_PUSCH.c}(j) value in upper strata, change and subscriber equipment in main plot during receiving random access response message, the subscriber equipment accumulation of should resetting.

Meanwhile, can consider extra method.When no matter when execution reconfigures, for the value of being accumulated of PUSCH and PUCCH, be reset (0 or random value [dB/ is linear/be encoded value]).When changing, the system information values label (systmeInfoValueTag in SIBType1) of parameter in SIB Class1 can configure the preceding method that will apply.

According to embodiments of the invention, subscriber equipment can be carried out consistent UL transmission at the place, front and back that reconfigures border of system information.

Embodiment described above can the combination with true-to-shape corresponding to factors and characteristics of the present invention.And, can think that corresponding key element or feature are optionally, unless they are mentioned clearly.Each in this key element or feature can realize with other key element or the feature form of being combined failing.In addition, it can be by partly combining to realize embodiments of the invention by key element and/or feature.The operating sequence of explaining for each embodiment of the present invention can be revised.Some configurations or the feature of an embodiment can be included in another embodiment, or can be replaced by corresponding configuration or the feature of another embodiment.And, be understandable that apparently, by the claim in the appended claims without clear and definite citation relations is combined and can be configured a new embodiment, or it can be included as new claim by revising after submit applications.

Although described with reference to the preferred embodiments of the present invention herein and for example clear the present invention, but it will be evident to one skilled in the art that, without departing from the spirit and scope of the present invention, can carry out therein various improvement and variation.What therefore, want is that the present invention covers improvement of the present invention and the variation in the scope that drops on appended claim and equivalent thereof.

Industrial usability

Therefore, control the method for up-link transmission power in the industrial various mobile communication system that can be applicable to comprise 3GPP LTE, LTE-A system etc., in wireless communication system by using TDD(time division duplex) subscriber equipment controls this up-link transmission power.

Claims (10)

1. In wireless communication system by using TDD(time division duplex) subscriber equipment of scheme controls a method for described up-link transmission power, said method comprising the steps of:

   If the ratio of the number of downlink subframe and the number of uplink sub-frames changes in TDD scheme, determine the described up-link transmission power that will launch at least one uplink sub-frames in reformed the first frame; With

   According to the up-link transmission power of being determined transmission of uplink signal in described at least one uplink sub-frames.
2. 2. method according to claim 1, wherein, the described up-link transmission power of being determined is determined in the emissive power control command that the ratio of the number of the number based in described downlink subframe and described uplink sub-frames is used before being changed in frame (TPC order), most recently used TPC order, the TPC order of being indicated by the control information receiving recently or acquiescence TPC order.
3. 3. method according to claim 1, wherein, described at least one uplink sub-frames comprises the first uplink sub-frames in described the first frame.
4. 4. method according to claim 1, wherein, the number of described at least one uplink sub-frames or position change according to the ratio of the number of the number of described downlink subframe before changing and the ratio of the number of described uplink sub-frames and the number of reformed described downlink subframe and described uplink sub-frames.
5. 5. method according to claim 2, wherein, described acquiescence TPC order is corresponding to predetermined value between described subscriber equipment and base station.
6. 6. in wireless communication system, using TDD(time division duplex) control the subscriber equipment of up-link transmission power during scheme, described subscriber equipment comprises:

   Processor, if the ratio of the number of downlink subframe and the number of uplink sub-frames changes in TDD scheme, described processor is configured to determine the described up-link transmission power that will launch at least one uplink sub-frames in reformed the first frame; With

   Reflector, described reflector is configured to according to the up-link transmission power of being determined transmission of uplink signal in described at least one uplink sub-frames.
7. 7. subscriber equipment according to claim 6, wherein, the described up-link transmission power of being determined is determined in the emissive power control command that the ratio of the number of the number based in described downlink subframe and described uplink sub-frames is used before being changed in frame (TPC order), most recently used TPC order, the TPC order of being indicated by the control information receiving recently or acquiescence TPC order.
8. 8. subscriber equipment according to claim 6, wherein, described at least one uplink sub-frames comprises the first uplink sub-frames in described the first frame.
9. 9. subscriber equipment according to claim 6, wherein, the number of described at least one uplink sub-frames or position change according to the ratio of the number of the number of described downlink subframe before changing and the ratio of the number of described uplink sub-frames and the number of reformed described downlink subframe and uplink sub-frames.
10. 10. subscriber equipment according to claim 7, wherein, described acquiescence TPC order is corresponding to predetermined value between described subscriber equipment and base station.

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