CN101617482A

CN101617482A - Be used for controlling of LTE based on leading up-link power

Info

Publication number: CN101617482A
Application number: CN200880005222A
Authority: CN
Inventors: D·P·马拉蒂; J·蒙托霍
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2007-02-14
Filing date: 2008-02-14
Publication date: 2009-12-30
Also published as: UA94797C2; CN101611565B; UA96181C2; CN107124754A; CN101611565A

Abstract

Described system and method, it helps to use power control leading with the closed power control technology in wireless communications environment.Can upload at down link and serve line link permission (for example, first up link permission the uplink inactive state after), and as the response that this up link is permitted, can be on up link transmission power control leading.According to an example, can control leading transmission to power and carry out clear and definite scheduling and/or implicit scheduling.Can use on the determined power level of open Loop Power control mechanism transmission power control leading by accessing terminal.The leading analysis can be controlled to power in the base station, and analyzes the generation power control command based on this, so that the employed power level that accesses terminal is proofreaied and correct.Then, access terminal and to use power control command, so that the power level that is used for uplink data transmission is adjusted.

Description

Be used for controlling of LTE based on leading up-link power

The cross reference of related application

[01] the application requires the U.S. Provisional Patent Application S.No.60/889 of the exercise question of submission on February 14th, 2007 for " A METHOD ANDAPPARATUS FOR POWER CONTROL USING A POWER CONTROLPREAMBLE ", 931 rights and interests.By reference above-mentioned application is completely integrated in this.

Technical field

[02] following explanation relates generally to radio communication, and more specifically, relates to and control employed up link (UL) power level that accesses terminal in based on the wireless communication system of Long Term Evolution (LTE).

Background technology

[03] is extensive use of wireless communication system, so that provide such as the voice that can provide via this wireless communication system and/or various types of communications of data.The multi-user that typical wireless communication system or network can be provided to one or more shared resources (for example, bandwidth, transmitting power etc.) inserts.For example, system can use the various multiple access technologies such as frequency division multiplexing (FDM), Time Division Multiplexing, code division multiplexing (CDM), OFDM (OFDM), single carrier frequency division multiplexing (SC-FDM) etc.In addition, system can meet the standard such as third generation cooperative programme (3GPP), 3GPP Long Term Evolution (LTE) etc.

[04] general, wireless multiple-access communication system can be supported a plurality of communications that access terminal simultaneously.Each accesses terminal and can communicate via the transmission on forward direction and reverse link and one or more base station.Forward link (perhaps down link) is meant from the base station to the communication link that accesses terminal, and reverse link (perhaps up link) is meant from the communication link of the base station that accesses terminal.Can set up this communication link via single single output of input (SISO), many single outputs of input (MISO), single many outputs of input (SIMO) or multiple-input and multiple-output (MIMO) system.

[05] wireless communication system uses one or more base stations usually and the sector of overlay area is provided at base station place.Typical sector can send a plurality of data flow for broadcasting, multicast and/or unicast services, and wherein, certain data flow can be the data flow of certain independent reception interested that accesses terminal.Can use accessing terminal to combined-flow entrained, receive in this sector coverage area more than one or all data flow.Similarly, access terminal and data can be sent to the base station or another accesses terminal.Under accessing terminal of many transmission signal datas situation near each other, for the communication on up link, in order to produce enough signal to noise ratio (snr)s on different data rates and transmission bandwidth, power control is important.When realizing above-mentioned target, expectation will keep lowly as far as possible owing to the expense that transmission caused that the power adjustment that these are accessed terminal is carried out.Reduce the expense be used for supporting power control to adjust make in all cases, especially under the situation of the cycle stretch-out of the data inactive state of UL, be difficult to guarantee enough reception reliability ranks.

Summary of the invention

[06], provided simplification general introduction below to one or more embodiment for the basic comprehension to these embodiment is provided.This general introduction is not the extensive overview to all contemplated embodiments, and neither want key or the important elements of all embodiment are discerned, neither want to describe the scope of any or all embodiment.Its sole purpose is some notions that provide one or more embodiment in simplified form, as to the given prelude that describes in detail more after a while.

[07] according to one or more embodiment with and corresponding open, be combined with and help in wireless communications environment, adopt irregular closed power control technology to use that power control is leading to be described various aspects.Can upload at down link and serve line link permission (for example, first up link permission after the uplink inactive state), and as response the up link permission, can be on up link transmission power control leading.According to an example, can dispatch and/or impliedly dispatch the leading transmission of power control clearly.Can utilize on the power level that open Loop Power control mechanism determines transmission power control leading accessing terminal.The leading analysis can be controlled to power in the base station, and based on the leading analysis of power control is generated power control command, so that the employed power level that accesses terminal is proofreaied and correct.Then, access terminal and to utilize power control command adjustment to be used for the power level of uplink data transmission.

[08], described at this paper and to have helped in wireless communications environment to generate the leading method of power control according to related aspect.This method can comprise that from the permission of base station receiving uplink this up link permission is first up link permission after the uplink inactive state.In addition, this method can comprise that employing controls the leading base station that sends to based on the power setting of open Loop Power control with power.In addition, this method can comprise that this power control command is adjusted power setting from base station received power control command.This method can also comprise that the adjusted power setting of employing sends to the base station with data.

[09] another aspect relates to radio communication device.This radio communication device can comprise the memory of holding instruction, and these instructions are used for: obtain the up link permission from the base station, this up link permission is first up link permission after the uplink inactive state; Estimate to be identified for the power level of power control preamble transmission based on open loop; On this power level, power controlled the leading base station that sends to; From base station received power control command; Change power level based on this power control command; And on the power level that changes, uplink data transmission is sent to the base station according to power control command.In addition, this radio communication device can comprise the processor that is connected to memory, is configured as to carry out the instruction that is kept in the memory.

[10] another aspect relates to radio communication device, and it makes it possible to use in wireless communications environment power control leading.This radio communication device can comprise the module that is used to obtain the up link permission, and this up link permission is first up link after the uplink inactive state.In addition, this radio communication device can comprise the leading module of power level transmission up-link power control that is used for to estimate according to open Loop Power control to select.In addition, this radio communication device can comprise the module of the power control command of the power level that is used to acquire change.In addition, this radio communication device can comprise the module that is used for sending uplink data on the power level after the change.

[11] another aspect relates to the machine readable media with storage machine-executable instruction thereon, these machine-executable instructions are used for: obtain the up link permission, this up link permission is first up link permission after the uplink inactive state; To estimate that according to open Loop Power control the power level of selecting transmits up-link power and controls leading; The power control command of the power level that acquires change; And on the power level after the change, send uplink data.

[12] according to another aspect, device in the wireless communication system can comprise processor, wherein, processor can be configured to obtain the up link permission from the base station, this up link permission is first up link permission of following after the uplink inactive state.In addition, processor can be configured to estimate to be identified for the power level that power is controlled preamble transmission based on open loop.Processor can also be configured on this power level power controlled the leading base station that sends to.In addition, processor can be configured to from base station received power control command.In addition, processor can be configured to change power level based on this power control command.In addition, processor can be configured on the power level after the change, uplink data transmission is sent to the base station.

[13], described at this paper and to have helped in wireless communications environment in order to use power control to the leading estimation approach of carrying out of power control according to other many aspects.This method can comprise up link permission sent to and accesses terminal.In addition, method can comprise leading reception of power control from accessing terminal and sending in the power level based on the open Loop Power control setting.In addition, this method can comprise that this power control command is proofreaied and correct the power level that accesses terminal based on the leading analysis of power control is generated power control command.This method can also comprise power control command transmitting delivered to and accesses terminal.In addition, this method can comprise that the uplink data transmission to sending from the power level that accesses terminal after correction receives.

[14] another aspect relates to the radio communication device that can comprise memory, and this memory is held instruction, and these instructions are used for: transmit the up link permission; Acquisition is leading via the power control that up link sends with the power level of determining by open Loop Power control mechanism; Based on the leading estimation of power control is produced the power control command that power level is proofreaied and correct; Via the down link transmission power control commands; And obtain uplink data transmission with the power level transmission after proofreading and correct.In addition, this radio communication device can comprise the processor that is connected to memory, is configured as to carry out the instruction that is kept in the memory.

[15] another aspect relates to radio communication device, and it makes it possible in wireless communications environment based on the leading power control command that accesses terminal and use that is produced as of power control.This radio communication device can comprise the module that is used for sending the up link permission on down link.In addition, this radio communication device can comprise and is used to obtain the leading module of power control that sends with the power level of estimating according to open loop to determine.In addition, this radio communication device can comprise the module that is used to send the power control command that power level is proofreaied and correct.In addition, this radio communication device can comprise the module that is used to obtain the uplink data transmission on the power level after the correction.

[16] another aspect relates to the machine readable media with storage machine-executable instruction thereon, and these machine-executable instructions are used for: send the up link permission on down link; Acquisition is leading with the power control that the power level of estimating according to open loop to determine sends; The power control command that transmission is proofreaied and correct power level; And the uplink data transmission of acquisition on the power level after the correction.

[17] according to another aspect, the device in the wireless communication system can comprise processor, wherein, processor can be configured to up link permission sent to and access terminal.Processor can also be configured to leading reception of power control from accessing terminal and sending in power level based on the open Loop Power control setting.In addition, processor can be configured to based on the leading analysis of power control is generated power control command, this power control command is proofreaied and correct the power level that accesses terminal.In addition, processor can be configured to power control command transmitting delivered to and access terminal.In addition, processor can be configured to the uplink data transmission that sends from the power level that accesses terminal after correction is received.

[18] in order to realize aforementioned and related objective, one or more embodiment comprise the feature that proves absolutely thereafter and particularly point out in the claims.Following explanation and accompanying drawing have provided some illustrative aspect of one or more embodiment in detail.Yet some in can using the multiple mode of a plurality of embodiment principles have only been represented in these aspects, and described embodiment wants to comprise all these aspects and their equivalent.

Description of drawings

[19] Fig. 1 is according to the explanation of the given various aspects of this paper to wireless communication system;

[20] Fig. 2 is the explanation of example system, and this example system is controlled the employed uplink power level that accesses terminal in the wireless communications environment based on LTE;

[21] Fig. 3 is the explanation of example system, and this example system is periodically proofreaied and correct the employed uplink power level that accesses terminal;

[22] Fig. 4 is the explanation of example system, and this example system is sent to power control command aperiodically in based on the wireless communications environment of LTE and accesses terminal;

[23] Fig. 5 is the explanation of example system, and this example system is used in based on the wireless communications environment of LTE based on leading up-link power control;

[24] Fig. 6 is the explanation of example system, and this example system is divided into groups to accessing terminal for transmission power control commands on down link;

[25] Fig. 7 is the explanation that is used for power control command is sent to the exemplary transmission structure of the group that respectively accesses terminal;

[26] Fig. 8 is the explanation of exemplary sequential chart that is used for the periodicity up-link power control procedure of LTE;

[27] Fig. 9 is the explanation of exemplary sequential chart that is used for the irregular up-link power control procedure of LTE;

[28] Figure 10 is the explanation that is used for the exemplary sequential chart of the leading up-link power control procedure that is used for LTE of carrying out lever balance of power control;

[29] Figure 11 is the explanation of illustrative methods, and this illustrative methods helps to generate the power control that is used for power control in based on the wireless communications environment of Long Term Evolution (LTE) leading;

[30] Figure 12 is the explanation of illustrative methods, and this illustrative methods helps to estimate the power control that is used for power control is leading in based on the wireless communications environment of Long Term Evolution (LTE);

[31] Figure 13 is the exemplary explanation that accesses terminal, and this exemplary accessing terminal helps to use power control leading in conjunction with power control in based on the wireless communication system of LTE;

[32] Figure 14 is the explanation of example system, and this example system helps in based on the wireless communication system of LTE being used for leading analysis of power control of power control;

[33] Figure 15 is the explanation of example wireless network environment, can use this example wireless network environment in conjunction with various system and methods described herein;

[34] Figure 16 is the explanation of example system, and this example system makes it possible to control leading generation power control command based on the power that uses that accesses terminal in wireless communications environment;

[35] Figure 17 is the explanation of example system, and this example system makes it possible to use in wireless communications environment power control leading.

Embodiment

[36] with reference now to accompanying drawing each embodiment is described, wherein, run through in full and use similar reference number to refer to similar element.In following explanation, for illustrative purposes,, many specific detail have been provided for the thorough understanding to one or more embodiment is provided.Yet, can not adopt these specific detail to realize these embodiment, this can be conspicuous.In other example, in order to help that one or more embodiment are described, show well-known structure and equipment with the form of block diagram.

[37] as employed in this application, term " assembly ", " module ", " system " etc. are to want to refer to the entity relevant with computer, i.e. the combination of hardware, firmware, hardware and software, software or executory software.For example, assembly can be the process moved on processor, processor, object, executable, execution thread, program and/or computer, but is not restricted to this.Shuo Ming mode by way of example, application program of moving on computing equipment and computing equipment can be assemblies.But one or more assemblies can reside in process and/or the execution thread, and assembly can and/or be distributed between two or more computers on a computer.In addition, can from the various computer-readable mediums that store various data structures, carry out these assemblies.For example, according to (for example having one or more packets, from with local system in, in the distributed system and/or such as the data of the synergistic assembly of another assembly on the network of the internet of the mode by signal and other system interaction) signal, these assemblies can communicate by the mode of this locality and/or teleprocessing.

[38] in addition, this paper is described each embodiment in conjunction with accessing terminal.Can be called system, subscriber unit, subscriber board, travelling carriage, mobile phone, remote station, remote terminal, mobile device, user terminal, terminal, Wireless Telecom Equipment, user agent, subscriber equipment or user's set (UE) with accessing terminal.Access terminal can be that cell phone, cordless telephone, session initiation protocol (SIP) phone, wireless local loop (WLL) are stood, PDA(Personal Digital Assistant), the handheld device with wireless connections ability, computing equipment or be connected to other treatment facility of radio modem.In addition, can be described each embodiment in conjunction with the base station at this paper.The base station can be used for and access terminal communicating, and the base station can be called access point, Node B, e Node B (eNB) or some other term.

[39] in addition, many aspects described herein or feature can be embodied as method, device or use manufacturing a product of standardization program and/or engineering.It is that want to comprise can be from the computer program of any computer readable device, carrier wave or medium access that as used herein term " manufactures a product ".For example, computer-readable medium (for example can comprise magnetic storage apparatus, hard disk, floppy disk, tape etc.), CD (for example, compact disc (CD), DVD (DVD) etc.), smart card and flash memory device (for example, EPROM, card, rod, secret key driving etc.), but be not limited thereto.In addition, various storage medium described herein can be represented one or more equipment and/or other machine readable media that is used for stored information.Term " machine readable media " can comprise wireless channel and can store, comprise and/or carry various other media of instruction and/or data, still be not restricted to this.

[40] with reference now to Fig. 1, a plurality of embodiments given according to this paper describe wireless communication system 100.System 100 comprises base station 102, and base station 102 can comprise a plurality of antenna sets.For example, an antenna sets can comprise

antenna

104 and 106, and another group can comprise

antenna

108 and 110, and another group can comprise antenna 112 and 114.For each antenna sets shows two antennas, yet, can use antenna more or still less for each group.In addition, base station 102 can comprise transmitter chain and receiver chain, recognize that as those skilled in the art each chain can comprise a plurality of assemblies (for example, processor, modulator, multiplexer, demodulator, demodulation multiplexer, antenna etc.) relevant with reception with the signal transmission again.

[41] respective sectors of base station 102 can with such as

access terminal

116 and 122 one or more the accessing terminal of accessing terminal communicate, yet, to recognize, base station 102 can be similar to 116 and 122 the accessing terminal of any in fact number of accessing terminal and communicate.For example, accessing

terminal

116 and 122 can be cell phone, smart phone, kneetop computer, handheld communication devices, handheld computing device, satellite radio devices, global positioning system, PDA and/or be used for any other suitable device of communicating on wireless communication system 100.As described, accessing terminal 116 communicates with

antenna

112 and 114, and wherein,

antenna

112 and 114 sends to information on forward link 118 and accesses terminal 116, and on reverse link 120 from the 116 reception information that access terminal.In addition, accessing terminal 122 communicates with

antenna

104 and 106, and wherein,

antenna

104 and 106 sends to information on forward link 124 and accesses terminal 122, and on reverse link 126 from the 122 reception information that access terminal.In frequency division multiplexing (FDD) system, for example, forward link 118 can utilize and the different frequency band of reverse link 120 employed frequency bands, and forward link 124 can use and the different frequency band of reverse link 126 employed frequency bands.In addition, in time division multiplexing (TDD) system, forward link 118 and reverse link 120 can utilize common band, and forward link 124 and reverse link 126 can utilize common band.

[42] can with every group of antenna and/or specify every group of antenna to communicate therein the zone be called the sector of base station 102 or the honeycomb of eNB.For example, antenna sets can be designed to communicate with accessing terminal in the sector of 102 overlay areas, base station.In the communicating by letter on

forward link

118 and 124, the transmitting antenna of base station 102 can utilize beam shaping, is used to access

terminal

116 and 122

forward link

118 and 124 signal to noise ratio so that improve.Simultaneously, when utilizing beam shaping, base station 102 in being randomly dispersed in whole relevant overlay area,

accesses terminal

116 and 122 when launching, compare with its all base stations of launching that access terminal of the independent sky alignment of process, accessing terminal in the contiguous honeycomb may be subjected to less interference.

[43] for example, system 100 can be based on the system of Long Term Evolution (LTE).In this system 100, the respective sectors of base station 102 can be controlled the 116 and 122 employed uplink power level that access terminal.Therefore, system 100 can provide the control of up link (UL) power, this power control produces path loss and (for example covers, path loss and cover can be along with the time slowly changes) compensation, and the compensation of the time exsiccation from contiguous honeycomb being disturbed (for example, because system 100 can be the system based on LTE that has adopted frequency reuse rate 1).In addition, system 100 can alleviate the big variation (variation) (for example, owing to can carry out multiplexing to a plurality of users) of the received power that 102 places obtain in the base station between a plurality of users in common band.In addition, system 100 can compensate the multipath fading variation on enough low velocity.For example, for 3km/h, channel on different carrier frequencies coherence time can be as follows: the 900MHz carrier frequency can have the coherence time of 400ms, and the 2GHz carrier frequency can have the coherence time of 180ms, and the 3GHz carrier frequency can have the coherence time of 120ms.Like this, depend on the reaction time and the periodicity of adjustment, can adopt low Doppler frequency that the rapid fading effect is proofreaied and correct.

[44] system 100 can use up-link power control open Loop Power control is machine-processed and that the closed power controlling mechanism combines.According to an example, each 116,122 first the leading power level that are provided with that can utilize open Loop Power control to communicate by letter that access terminal for Random Access Channel (RACH).Leading for first of RACH, each accesses terminal and 116,122 can have from the base station 102 down links (DL) communications that obtain, and open loop mechanism can be so that each accesses terminal and 116,122 can select the up-link transmission power level that is inversely proportional to received power level about the downlink communication that obtained.Like this, access terminal and 116,122 can utilize the knowledge of down link to be used for ul transmissions.By the mode that real-time power is adjusted, open loop mechanism can allow the violent change of radio condition is adapted to (for example, depending on received power filtering) very fast.In addition, compare with normally used conventional art, open loop mechanism can continue operation outside RACH handles.In case the random access procedure success, system 100 can utilize closed loop mechanism.For example, give when uplink resource allocation periodically and (for example to access terminal 116,122 the time, periodically uplink resource can be physical uplink control channel (PUCCH) or detection reference signal (SRS, Sounding ReferenceSignal) resource), can use technology of closed loop.In addition, the respective sectors in base station 102 (and/or network) can be controlled 116, the 122 employed up-link transmission powers that access terminal based on closed-loop control.

[45] system's 100 employed closed loop mechanism can be periodic, irregular or the combination of the two.Respective sectors in the base station 102 can be with closed-loop corrected 116,122 (for example, every 0.5ms, 1ms, 2ms, the 4ms that access terminal that periodically send to of periodicity ... send once).For example, this periodicity can depend on the periodicity of ul transmissions.In addition, periodically proofread and correct can be single-bit proofread and correct (for example ,/down, ± 1dB ...) and/or many bit correction (for example, ± 1dB, ± 2dB, ± 3dB, ± 4dB ...).Like this, the periodicity of power control step-size and correction can be determined the maximum rate of the up-link power variation that the interior respective sectors in base station 102 (and/or network) can be controlled.According to another example, can as required the respective sectors of irregular correction from base station 102 be sent to and access terminal 116,122 accordingly.According to this example, when by the network measure value (for example, setting reception (RX) power outside the boundary, with control information send to the given chance that accesses terminal ...) when triggering, can send these corrections aperiodically.In addition, irregularly correction can be single-bit and/or many bits (because the live part of the expense relevant with irregular correction can relate to the correction scheduling but not proofread and correct size, can be many bits so proofread and correct for example).According to another example, the respective sectors in the base station 102 can also will irregularly be proofreaied and correct to send to except periodically proofreading and correct and be accessed terminal 116,122, to minimize the expense that transmission was caused of these power adjustment.

[46] turn to Fig. 2 now, illustrated is system 200, and it is to controlling based on the employed uplink power level that accesses terminal in the wireless communications environment of LTE.System 200 comprises the sector in the base station 202, and it can communicate with the (not shown) that accesses terminal of any in fact number.In addition, the sector in the base station 202 can comprise received power monitor 204, and it is estimated the power level relevant with the uplink signal that obtains from accessing terminal.In addition, the sector in the base station 202 can comprise up link (UL) power regulator 206, and it utilizes the power level after analyzing to generate order, so that change the power level that accesses terminal.

[47] can be for base station 202 and the communication between accessing terminal each physics (PHY) channel 208 is carried out lever balance; These physical channels 208 can comprise downlink physical channel and uplink physical channel.The example of downlink physical channel comprises physical downlink control channel (PDCCH), physical down link sharing channel (PDSCH) and Common Power Control Channel (CPCCH).PDCCH is 1/ layer of 2 (L1/L2) control channel of DL layer (for example, being DL or UL transmission distribution PHY layer resource), and it has the capacity of about 30-60 bit and is subjected to Cyclic Redundancy Check protection.PDCCH can carry up link permission (grant) and downlink allocation.PDSCH is a DL shared data channel; PDSCH can be the DL data channel of sharing between different user.On DL, send CPCCH, be used for a plurality of accessing terminal carried out the control of UL power.The correction that sends on CPCCH can be single-bit or many bits.In addition, CPCCH can be the particular instance of PDCCH.The example of uplink physical channel comprises physical uplink control channel (PUCCH), physical uplink link sharing channel (PUSCH), detection reference signal (SRS) and Random Access Channel (RACH).PUCCH comprises CQI (CQI) channel, ack channel and UL request.PUSCH is a UL shared data channel.SRS can not have information, and can make it possible on UL channel be surveyed, and channel is sampled on the part of whole system bandwidths so that allow.To recognize that the theme of institute's prescription is not restricted to these exemplary physical channels 208.

[48] ul transmissions that can carry out for accessing terminal of received power monitor 204 and UL power regulator 206 provides closed power control.Can be in the operation in the LTE system in preset time, transmission on the bandwidth that can be significantly less than system's 200 overall bandwidth.Each accesses terminal can be in preset time, send on the sub-fraction of system's 200 overall bandwidth.In addition, accessing terminal can the frequency of utilization frequency hopping; Like this, attempt to meet difficulty to will estimate the time when the respective sectors in the base station 202 to the adjustment that the uplink power level that accesses terminal is carried out.Therefore, the appropriate closed power controlling mechanism that is provided by received power monitor 204 and UL power regulator 206 is from estimating making up broadband reception power on possible a plurality of moments and the transmission on possible a plurality of UL PHY channels, and it can not considered to access terminal transmission bandwidth and appropriate correction to path loss and capture-effect is provided at any time.

[49] received power monitor 204 has made up the estimation of broadband reception power based on the transmission that accesses terminal in every way from channel sample.For example, received power monitor 204 can use PUSCH to be used for sampling.According to this example, the transmission bandwidth to PUSCH on given time slot positions.Frequency diversity scheduling can be applied to the pseudo-random hopping pattern transmission bandwidth at the boundary of time slot place, and may be applied to retransmit, so that make full use of frequency diversity.The PUSCH transmission that utilizes frequency selective scheduling not with the frequency hopping mode applications to sending on the data, and therefore,, may need the long period for the channel on all (perhaps great majority) frequencies is sampled.In addition, frequency selective scheduling can carry out balance to the transmission of SRS or PUCCH.Frequency selective scheduling is the scheduling strategy that has utilized channel selectivity; For example, frequency selective scheduling is attempted transmission is limited on the optimal sub-band.This scheduling strategy accesses terminal relevant with Hypomobility.In addition, these transmission do not comprise the frequency frequency hopping usually.Frequency diversity scheduling is diverse scheduling strategy, and it uses the whole system bandwidth (is mould with minimum transmitted bandwidth capacity for example ...) to obtain frequency diversity naturally.The transmission relevant with frequency diversity scheduling can be relevant with the frequency frequency hopping.In addition, the frequency frequency hopping can comprise the transmission frequency that changes waveform with pseudo-random fashion, so that utilize frequency diversity from the viewpoint of channel and interference.

[50] according to another example, received power monitor 204 can utilize PUCCH that the UL channel is sampled, and therefore, has made up broadband reception power and estimated.Can also on given time slot, position by the transmission bandwidth to PUCCH, on the boundary of time slot of each Transmission Time Interval (TTI), carry out frequency hopping.Shared bandwidth can depend on whether there is the PUSCH transmission on specific T TI.When on given TTI, sending PUSCH, can be in the band of the remainder of transfer of data on PUSCH (for example, in order to keep the single carrier property of UL waveform) send the control information that will on PUCCH, send.When on specific T TI, not sending PUSCH, can be to send PUCCH on the local frequency reserved of PUCCH transmission in the edge of system bandwidth.

[51] according to another illustrative examples, received power monitor 204 can utilize SRS to transmit channel sampled and make up broadband reception power to be estimated.The transmission band of SRS (on the time) can equal whole system frequency band (perhaps minimum accesses terminal and sends bandwidth capacity) in fact.At given SC-FDMA symbol place (for example, the SC-FDMA symbol is the minimum unit that transmits on the UL of LTE), (for example can make the transmission localization, cross over the continuous subcarrier set of frequency hopping in time) or distribution is (for example, cross over the part of whole system bandwidth or whole system bandwidth, it can frequency hopping or frequency hopping not ...).

[52] received power monitor 204 is estimated from made up broadband reception power the sampling of whole system bandwidth upper signal channel.Yet, depend on mode that channel is sampled and/or whether the frequency frequency hopping be applied to transmission that received power monitor 204 makes up the time interval that broadband reception power estimates from the UL channel sample can difference.

[53] transmission of the PUCCH when not having the UL data occurs in the edge of band system band.Can the PUCCH transmission when having the UL data be positioned in the frequency band identical with transfer of data on the PUSCH.In addition, in order to utilize the UL frequency selective scheduling, the PUSCH transmission can not change transmission frequency or frequency hopping not, yet, for the scheduling of enables frequency selectivity,, can carry out balance to SRS for the FDD/TDD system.In addition, when PUSCH frequency of utilization diversity is dispatched, the frequency frequency hopping is applied to transmission.

[54] in addition, based on the channel sample of being finished by received power monitor 204, UL power regulator 206 can generate the order that can change the specific employed UL power level that accesses terminal.This order can be single-bit proofread and correct (for example ,/down, ± 1dB ...) and/or many bit correction (for example, ± 1dB, ± 2dB, ± 3dB, ± 4dB ...).In addition, UL power regulator 206 (and/or corresponding base station 202 in sector) can send to the order that is generated accessing terminal that this order expects.

[55] in addition, each access terminal can be relevant with specific state on preset time.The example of state of accessing terminal comprises LTE_IDLE, LTE_ACTIVE and LTE_ACTIVE_CPC.Yet, will recognize that the theme of institute's prescription is not restricted to these illustrative states.

[56] LTE_IDLE accesses terminal not have the state that accesses terminal of unique cell ID.When in the LTE_IDLE state, accessing terminal can not 202 the connection to the base station.In addition, can be via using RACH to finish from the LTE_IDLE state transitions to the LTE_ACTIVE state.

[57] LTE_ACTIVE accesses terminal to have the state that accesses terminal of unique cell ID.In addition, when in the LTE_ACTIVE state, access terminal and to transmit data via up link and/or downlink activity ground.Accessing terminal in this state has UL private resource (for example, CQI, the SRS that periodically sends ...).According to an example, accessing terminal in the LTE_ACTIVE state can be used discontinuous transmission/discontinuous reception (DTX/DRX) process, and it has expection unlike about 20ms or much longer cycle of 40ms.As to the DL activity (for example, in the band of DL data or by PDCCH can be getable the UL permission) direct response or by on PUCCH, sending the UL request, the accessing terminal beginning PUSCH transmission in this state.In addition, the user in this state has the UL/DL data initiatively to exchange accessing terminal of generation, or moves high service class (GoS) and use (for example, the voice on the Internet Protocol (VoIP) ...) access terminal.

[58] LTE_ACTIVE_CPC (grouping connects continuously) is the sub-state of LTE_ACTIVE, and wherein, accessing terminal keeps their unique cell IDs, but has discharged the UL private resource.Utilize LTE_ACTIVE_CPC to make it possible to extending battery life.As to the DL activity (for example, in the band of DL data or by PDCCH can be getable the UL permission ...) response or by send the UL request on RACH, accessing terminal in this sub-state begins transmission.Initial Trans can based on open loop mechanism (for example, as response) to the DL activity or can based on a last success leading (for example, RACH).

[59] with reference to figure 3, illustrated is that the employed uplink power level that accesses terminal is carried out the periodically system 300 of correction.System 300 comprises base station 202, and diverse (not shown) that accesses terminal of any number (and/or) communicates with accessing terminal 302 for it.Accessing terminal 302 comprises UL power manager 304, and UL power manager 304 further comprises UL power initializer 306.In addition, access terminal and 302 comprise UL periodic transmission machine 308.Base station 202 also comprises received power monitor 204 and UL power regulator 206; Received power monitor 204 also comprises periodically adjuster 310.

[60] periodically adjuster 310 generate will be sent to 302 the periodicity power control command of accessing terminal (for example, cyclical transmission power control (TPC) order, periodically proofread and correct ...).In addition, periodically adjuster 310 can be with any cycle (for example, 0.5ms, 1ms, 2ms, 4ms ...) the periodicity power control command transmitting is delivered to 302 (and/or any diverse the accessing terminal) that access terminal; Yet, can expect that UL power regulator 206 and/or base station 202 can send this periodicity power control command.In addition, periodically adjuster 310 can produce single-bit proofread and correct (for example ,/down, ± 1dB ...) and/or many bit correction (for example, ± 1dB, ± 2dB, ± 3dB, ± 4dB ...).For example, if send periodically correction from periodicity adjuster 310, so more may use single-bit to proofread and correct, and vice versa with upper frequency.

[61] 304 pairs of UL power manager, 302 uplink power level that are used for ul transmissions that access terminal are controlled.UL power manager 304 can be from the base station power control command of 202 receiving cycles, and change into the uplink power level that transmission is used based on the order that is obtained.According to another illustrative examples, UL power initializer 306 can be provided with the initial uplink transmitting power.For example, UL power initializer 306 can be used open loop mechanism, so that determine the initial uplink transmitting power based on downlink activity.In addition or replacedly, UL power initializer 306 can be distributed to the initial uplink power level with previous (for example, previous ...) leading (for example, RACH) the relevant power level of success.

[62] UL periodic transmission machine 308 can be on up link sends to cyclical transmission base station 202.For example, when accessing terminal 302 in the LTE_ACTIVE state time, UL periodic transmission machine 308 can move.In addition, the cyclical transmission of UL periodic transmission machine 308 transmission can be SRS transmission set; Yet, will recognize that the theme of institute's prescription is not restricted to this, can use periodicity ul transmissions (for example, periodically CQI transmission, the periodically PUCCH transmission of any kind ...).Like this, because the SRS transmission can be a detectable signal, so UL periodic transmission machine 308 can send the SRS transmission on up link, so that on the whole system bandwidth, channel is surveyed; Therefore, on the time identical, can use detectable signal to calculate closed-loop corrected as the control of UL power with carrying out the scheduling of uplink frequency selectivity.In conjunction with channel is sampled, the received power monitor 204 of base station 202 can receive and/or use the transmission that is sent by UL periodic transmission machine 308.In addition, UL power regulator 206 and/or periodicity adjuster 310 can generate the order corresponding to this sampling.

[63] according to an illustrative examples, can with the periodicity of the UL transmission that sends by 302 the UL periodic transmission machine 308 that accesses terminal with connect for the 302 employed DLTPC command transfer cycles that accessed terminal by periodicity adjuster 310; Therefore, can be to have the different UL transmission transmission DL TPC order that accesses terminal periodically with diverse transmission cycle.In addition, the periodicity of UL transmission can be relevant with the bit number that is distributed for the power adjustment that accesses terminal, and wherein this power adjustment that accesses terminal is (for example, to access terminal 302 by periodicity adjuster 310 for specific accessing terminal ...) produce.For example, can pre-determine in bit number and up link cyclical transmission speed (for example, SRS transmission rate, the PUCCH transmission rate of proofreading and correct distribution for up-link power control ...) between mapping.According to this example, the speed that the speed that the speed that the speed that the up link cyclical transmission speed of 200Hz can be mapped to 1 bit, 100Hz can be mapped to 1 bit, 50Hz can be mapped to 2 bits, 25Hz can be mapped to 2 bits and 0Hz can be mapped to x＞2 bits.According to previous example, the bit number of punishing the adjustment of dispensing power becomes bigger along with the reduction of up link cyclical transmission speed accessing terminal.(for example, there are not SRS, PUCCH in 0Hz up link cyclical transmission speed ... transmission) limit place, the power adjustment can be x＞2 bits, it can be the situation that has the open-loop transmission that closed loop adjusts as required.

[64] periodically adjuster 310 can send to correction and base station 202 all users in fact relevant, in the LTE_ACTIVE state on the periodic basis.According to an example, for example, can periodicity adjuster 310 be divided into groups to the user that it sends order based on GoS demand, DRX/DTX cycle and side-play amount etc.Periodically adjuster 310 can upward be organized transmission power control command for the user in the particular instance (can be expressed as CPCCH or TPC-PDCCH) of PDCCH.According to another illustrative examples, periodically adjuster 310 can be used for in-band signalling user's group, and wherein, the size of user's group can be greater than or equal to 1.Can be sent to the relevant relevant control (if present) that accesses terminal required based on the needed bit number of correction and with information with the expense that periodically correction is relevant.

[65] for periodicity adjuster 310 transmits through-put power control (TPC) order on PDCCH, can use 32 bit pay(useful) loads and 8 bit CRC.For example, can use 32 the single-bit TPC orders of 1ms in the time interval constantly for 1 PDCCH.Like this, suppose and used FDD, can on each TTI, use single PDCCH to support 320 users that are in the LTE_ACTIVE state with 100Hz.Therefore, can provide single-bit to proofread and correct by every 10ms, this can allow the correction of 100dB/s.According to another example, can use 16 dibit TPC orders in the time interval at 1ms.Like this, suppose and used FDD, can on each TTI, use single PDCCH with the user in 320 LTE_ACTIVE states of 50Hz support.Therefore, the dibit of every 20ms is proofreaied and correct the correction that allows 100dB/s.

[66] turn to Fig. 4 now, illustrated is that power control command is sent to aperiodically based on the system that accesses terminal 400 in the wireless communications environment of LTE.System 400 comprises base station 202, and different (not shown) that access terminal of any number (and/or) communicates with accessing terminal 302 for it.Base station 202 comprises received power monitor 204 and UL power regulator 206, and UL power regulator 206 further comprises irregular adjuster 402.In addition, accessing terminal 302 comprises UL power manager 304, and UL power manager 304 further comprises irregular order receiver 404.

[67] irregularly adjuster 402 can produce as required and point to 302 the power control command of accessing terminal.For example, when when triggering, irregularly adjuster 402 can transmit aperiodically by measuring (for example, the measurement of the condition that the data (such as the received power that is being provided with outside the border) that are used to from received power monitor 204 are recognized).Irregularly adjuster 402 can determine to access terminal 302 uplink power level departs from objectives on special time; Like this, in response, irregularly adjuster 402 can send order so that this power level is adjusted.In addition, irregularly adjuster 402 can produce single-bit proofread and correct (for example ,/down, ± 1dB ...) and/or many bit correction (for example, ± 1dB, ± 2dB, ± 3dB, ± 4dB ...).

[68] irregularly order receiver 404 can obtain the correction that sends by irregular adjuster 402 (and/or UL power regulator 206 and/or generally speaking the respective sectors in the base station 202).For example, irregularly order receiver 404 can explain that the specific correction that is sent by the respective sectors in the base station 202 is to want to be used to access terminal 302.In addition, based on the correction that is obtained, irregularly order receiver 404 and/or UL power manager 304 can change the 302 employed uplink power level that access terminal.

[69] irregularly the access terminal irregular correction of 302 uplink power level of adjuster 402 being used to of being produced can be based on triggering.Like this, compare with the periodicity correction, because irregular clean culture characteristic of proofreading and correct, so irregular correction may be relevant with bigger expense.In addition, according to an example that uses many bits irregularly to proofread and correct, can be to PDCCH (for example with these correction maps, in this case, capability correction can be distributed as DL or the part of UL permission send) or PDCCH/PDSCH to (for example, in this case, can send independently or proofread and correct in transmitted power in the band of other transfer of data) particular instance.

[70] with reference to figure 5, illustrated is system 500, and it uses in based on the wireless communications environment of LTE based on leading up-link power control.System 500 comprises the sector in the base station 202, and different (not shown) that accesses terminal of any number (and/or) communicates with accessing terminal 302 for it.As mentioned above, the respective sectors in the base station 202 can comprise received power monitor 204 and UL power regulator 206, and UL power regulator 206 may further include irregular adjuster 402; And accessing terminal 302 can comprise UL power manager 304, and UL power manager 304 may further include irregular order receiver 404.Though it is not shown, substituting except irregular adjuster 402 or as irregular adjuster 402, can expect that UL power regulator 206 can comprise the periodicity adjuster 310 of Fig. 3, and/or except irregular order receiver 404 or as irregular substituting of order receiver 404, accessing terminal 302 can comprise and periodically order receiver; Like this, can expect that the theme of institute's prescription is not restricted to the following explanation of irregular adjuster 402 of use and irregular order receiver 404.In addition, UL power manager 304 can also comprise leading generator 502, leading generator 502 before uplink data transmission (for example, before PUSCH/PUCCH transmission ...) on up link, power controlled the leading respective sectors that sends in the base station 202.In addition, UL power regulator 206 can comprise leading estimator 504, the leading analyses of the 504 pairs of power that received of leading estimator control so that the 302 employed power settings that access terminal are proofreaied and correct, and on down link, power control command transmitting delivered to and access terminal 302.Yet, can expect leading generator 502 can be included in to access terminal in 302, but separate with UL power manager 304; And/or leading estimator 504 can be included in the respective sectors of base station 202, but separate with UL power regulator 206.

[71] up-link power control may produce the remarkable variation (variance) of burst transfer SNR.In order to alleviate this variation, can utilize preamble transmission to come before uplink data transmission 302 to provide power control command to accessing terminal, wherein, uplink data transmission begins immediately or continues can follow the UL permission that sends on PDCCH after.When receiving the UL permission, UL power manager 304 can use open Loop Power control to be provided for sending the primary power level of ul transmissions.By using leading generator 502, in the time will on up link, sending sensitive information, can alleviate the transient effect relevant with open Loop Power control by PUCCH or PUSCH.

[72] leading generator 502 can be on up link transmission power control leading.This power control is leading can be single SRS transmission.Respective sectors in the base station 202 (and/or network) can be clearly or is impliedly dispatched power and control leading this transmission.By leading the making it possible to of power control that leading generator 502 sends channel is carried out quick detection, wherein ul transmissions is crossed over system bandwidth partly or completely (for example, to the transmitted bandwidth capacity that the accesses terminal delivery of minimum ...).According to an illustrative examples, can adopt power to control two or four frequency hoppings of the every TTI of leading realization.In addition, power control is leading makes first PUCCH or PUSCH transmission can being carried out expeditiously closed power after the UL permission that receives after the UL inactive state control.

[73] according to an example, when in the LTE_ACTIVE_CPC state access terminal 302 when obtaining the UL permission (for example, because down link data active state), power by the UL power manager 304 determined initial transmission that will send on up link can be based on open Loop Power control (for example, not using closed loop mechanism).Initial open loop setting can be made an uproar, and therefore, may not be best for transmitting power.Yet, in case can just can improve the reliability of ul transmissions significantly to proofreading and correct from the transmitting power of 302 first ul transmissions of accessing terminal.

[74] in order to handle previous example, leading generator 502 will be from the leading corresponding sector in the base station 202 (for example, can on PUSCH and/or PUCCH transmission information) that sends to of the power control before 302 the message transmission of accessing terminal.Can be leading with the power level delivering power control that produces according to open Loop Power control mechanism.Leading estimator 504 can obtain and check that power control is leading, so that according to the leading indication of power control 302 the power setting of accessing terminal is proofreaied and correct fast.For example, leading estimator 504 can generate and transmission power control commands (for example, through-put power control (TPC) order), so that adjust 302 the UL power manager 304 employed power levels of accessing terminal.Power control command can be that single-bit is proofreaied and correct and/or many bit correction.Afterwards, UL power manager 304 can be carried out the power control command that the respective sectors from base station 202 obtains.In addition, afterwards, accessing terminal 302 can send ul transmissions (for example, PUSCH and/or PUCCH transmission) with UL power manager 304 open loop power level after according to the correction of the power control command setting that receives.

[75] respective sectors in the base station 202 scheduler (not shown) of base station 202 (and/or) can be clearly or is impliedly dispatched the leading transmission of power control from leading generator 502.According to an illustrative examples, the clear and definite leading generator 502 that is scheduling to provides clear and definite indication, so that transmission power control is leading on up link.According to this illustrative examples, the UL permission that 202 (for example, on PDCCH) send from the base station (for example, first UL permission) can provide and dispatch relevant data, and it is leading to be used on up link transmission power control.Therefore, the UL permission can make leading generator 502 in high efficiency mode channel be surveyed (for example, utilizing leading two or four frequency hoppings of crossing over system bandwidth in given TTI of power control that sending on the up link).Respective sectors in base station 202 receives after ul transmissions and leading estimator 504 analyze, rated output proofread and correct and with this capability correction with (for example be used for the PUCCH/PUSCH transmission, it is carried out capability correction) new UL permission (for example, second UL permission) on PDCCH, send together.

[76], can use the leading implicit scheduling of power control by the mode of another example.Based in the sub-state of LTE_ACTIVE_CPC, accessing terminal 302, leading generator 502 can identify inferentially will be before the routine data transmission transmission power control leading (for example, on PUSCH/PUCCH).Therefore, the respective sectors in the base station 202 does not need to send two UL permission (for example, as be used for the leading situation of clearly dispatching of power control).In addition, the UL permission that clearly sends can be applied to next mixed automatic repeat request (HARQ) cycle, and being used for leading modulation of power control and encoding scheme (MCS) and/or resource can give tacit consent to, and be access terminal 302 and base station 202 in corresponding sector all known (for example, being kept in the memory of the respective sectors in access terminal 302 memory and/or the base station 202).Like this, when using implicit scheduling, leading generator 502 can be on predetermined resource delivering power control leading, rather than utilize clear and definite scheduled resources (for example, as the situation that is used for clearly dispatching).

[77] using power control leading after power setting is proofreaied and correct to UL, accessing terminal 302 can be reallocated physical uplink link circuit resource (for example, being redistributed by the base station), and therefore returns to the LTE_ACTIVE state.When in LTE_ACTIVE, as described herein, subsequent transmission can be based on the correction that is produced, and wherein this correction is produced and sent to by irregular adjuster 402 and accesses terminal 302 and carried out by irregular order receiver 404 (and/or UL power manager 304).[78] with reference now to Fig. 6, illustrated is system 600, and it divides into groups to a plurality of accessing terminal for transmission power control commands on down link.System 600 comprise with access terminal 1 602, access terminal 2 604 ..., and the base station 202 that communicates of the N 606 that accesses terminal in respective sectors, wherein, N can be any integer.Each 602-606 that accesses terminal may further include separately UL power manager (for example, access terminal 1 602 comprise UL power manager 1 608, access terminal 2 604 comprise UL power manager 2 610 ..., the N 606 that accesses terminal comprises UL power manager N 612).In addition, respective sectors in the base station 202 can comprise received power monitor 204, UL power regulator 206 and (AT) burster 614 that accesses terminal, and AT burster 614 will access terminal the subclass combination of 602-606 in groups to be used for transmission power control commands on down link.

[79] AT burster 614 can divide into groups to the 602-606 that accesses terminal according to various factors.For example, AT burster 614 can be assigned to one group with one or more 602-606 of accessing terminal based on DRX cycle and phase place.According to another illustrative examples, AT burster 614 can be based on the employed up link cyclical transmission of the 602-606 that accesses terminal speed (for example, SRS transmission rate, PUCCH transmission rate ...) 602-606 that will access terminal be assigned to each the group.Each subclass by the 602-606 that will access terminal is merged into different groups, UL power regulator 206 can be more efficiently carries out the transmission (for example, by in public message for being grouped in a plurality of transmission power control commands that access terminal together) of power control command by PDCCH (perhaps CPCCH, TPC-PDCCH) on DL.By way of example, AT burster 614 can be formed for periodically each group of up-link power control; Yet the theme of institute's prescription is not restricted to this.

[80] according to an illustrative examples, access terminal and 1 602 can be that the SRS transmission uses the transmission rate of 200Hz, accessing terminal 2 604 can be that the SRS transmission uses the transmission rate of 50Hz, and the N 606 that accesses terminal can be the transmission rate that 100Hz is used in the SRS transmission.AT burster 614 can identify these each transmission rates (for example, using the signal that is obtained via received power monitor 204 grades to discern).Then, AT burster 614 can with access terminal 1 602 and the N 606 that accesses terminal (accessing terminal) with any other that uses 100Hz or 200Hz transmission rate be assigned to group A.AT burster 614 can also be assigned to group B with 2 604 (and any different the accessing terminal of using 25Hz or 50Hz transmission rate) that access terminal.Yet, will recognize that the theme of institute's prescription is not restricted to the above stated specification example.In addition, AT burster 614 can be distributed to each group (for example, using) with group ID on PDCCH or CPCCH.602-606 distributes to each group in case will access terminal, the order that sends by UL power regulator 206 can use corresponding to the access terminal down-chain resource of relevant particular group of expection.For example, AT burster 614 and UL power regulator 206 can co-operation in each PDCCH transmission, the TPC order is sent to a plurality of 602-606 of accessing terminal.In addition, each UL power manager 608-612 can discern appropriate PDCCH transmission, so that intercept with (for example, based on corresponding group of ID ...) to point to its TPC order.

[81] turn to Fig. 7, illustrated is the exemplary transmission structure that is used for power control command is sent to the group that accesses terminal.For example, can use this transmission structure for the PDCCH transmission.Two exemplary transmission structures (for example, transmission structure 700 and transmission structure 702) are described; Yet, can expect that the theme of institute's prescription is not restricted to these

examples.Transmission structure

700 and 702 can be grouped into each PDCCH transmission by the power control command that will be used for a plurality of users and reduce expense.As described, the power control command that transmission structure 700 will be used for organizing A user is grouped into first PDCCH transmission, and the power control command that will be used for organizing B user is grouped into second PDCCH transmission.In addition, first all comprises Cyclic Redundancy Check with second PDCCH transmission.In addition, transmission structure 702 power control command that will be used for organizing A and B user is incorporated in public PDCCH transmission.Mode by explanation, for transmission structure 702, the power control command that is used for organizing A user can be included in first segmentation of public PDCCH transmission, and the power control command that is used for organizing B user can be included in second segmentation of public PDCCH transmission.

[82] with reference to figure 8, illustrated is the exemplary sequential chart 800 that is used for the periodicity up-link power control procedure of LTE.At 802 places, describe in the power control process that accesses terminal of LTE_ACTIVE state being used for.In this state, accessing terminal sends to the base station with periodic SRS transmission, and the base station is made answer with periodic TPC order to periodic SRS transmission.As shown in the illustrated example, the transmitted power that accesses terminal is proofreaied and correct by the single TPC bit that on down link, periodically sends.To notice, can replace periodically SRS transmission with periodically CQI transmission, periodicity PUCCH transmission etc.Since periodically the CQI transmission or periodically the PUCCH transmission may not cross over the whole system bandwidth, so from the viewpoint of channel detection, these transmission may be that efficient is lower; Yet,, can measure based on UL balance is carried out in these transmission at the place, base station for closed-loop corrected.

[83] at 804 places, to being described the non-cycle of activity that is used to access terminal.(for example, predetermined or use threshold period) accesses terminal and transfers to the sub-state of LTE_ACTIVE_CPC after non-cycle of activity.In this sub-state, PHY UL resource is removed distribution from accessing terminal; Therefore, when recovering the UL transmission, can not use closed power control.

[84] at 806 places, the recovery ul transmissions accesses terminal.Utilize RACH to use open loop to estimate to recover ul transmissions.According to an example,, just can estimate to revise with certain forgetting factor divided ring according to a last through-put power if think useful.As the response of the RACH that sends accessing terminal, the base station can send the band internal power that is used to access terminal and adjust (for example, the x bit power is adjusted, and wherein, x can be any in fact integer).

[85], can verify the identity that accesses terminal by the RACH process at 808 places.In addition, can be at 808 places (for example, with the SRS configuration) finish PHY UL resource and redistribute.

[86], access terminal in the LTE_ACTIVE state at 810 places.Therefore, access terminal and recover the cyclical transmission of SRS.As described, the cycle of transmitting with periodicity SRS at 802 places in the cycle of the periodicity SRS at 810 places transmission is different; Yet the theme of institute's prescription is not restricted to this.As the response to periodicity SRS transmission, the base station sends the TPC order, in this case, the TPC order account for 2 bits (for example, ± 1dB, ± 2dB).In addition, though undeclared, the transmission that accesses terminal can continue to utilize the open loop correction of determining according at the received power level at the place that accesses terminal.Therefore, can not comprise outside according to the definite open loop correction of the variation of the place of accessing terminal received power closed-loop corrected and/or comprise closed-loop corrected.

[87] turn to Fig. 9 now, illustrated is the exemplary sequential chart 900 that is used for the irregular up-link power control procedure of LTE.Illustrated is the power control process that accesses terminal that is used at the LTE_ACTIVE state.Sequential chart 900 is the periodicity ul transmissions not.In addition, can capability correction be sent to from the base station based on the power that on PUSCH, receives and access terminal.The base station is transmitted PUSCH and is estimated, so that determine whether to carry out the power adjustment.If the base station required power adjustment then can rely on irregular power adjustment by estimating that specific PUSCH transmission is thought, wherein the base station sends to message (for example, the order of the TPC in the UL permission) and accesses terminal.When the base station determines that this power adjustment is not necessary for given PUSCH transmission on special time, then the base station need be on this time as the response of given PUSCH transmission is sent the TPC order (but, for example, the response as to given PUSCH transmission can send ACK ...).Whether in addition, no matter accessing terminal obtains TPC order in preset time, accesses terminal and can rely on correction based on open loop mechanism forever.In addition, the correction that is sent by the base station can be that single-bit is proofreaied and correct and/or many bit correction.

[88] will recognize, under situation, can use similar scheme, and wherein, can on DL, send as required and proofread and correct with periodically UL transmission.Like this, accessing terminal periodically to send the SRS transmission on up link, and the base station can be estimated so that the power adjustment of determining to carry out this SRS transmission.Afterwards, in case determine in the adjustment of special time required power, the base station just can send to access terminal (for example, the irregular downlink transmission of power control command) with the TPC order on down link.

[89] the up-link power control procedure described in Fig. 8 and 9 comprise a plurality of public aspect.That is, can be for periodically being used for the notion of the Δ PSD (increment power spectral density) of UL transfer of data with irregular up-link power control.Δ PSD can be provided as and minimized the maximum transmission power that the influence of contiguous honeycomb is allowed to be used for given user.Δ PSD can be along with for example from the load designator of contiguous honeycomb, channel condition etc. and development and change in time.In addition, when possibility, Δ PSD can be reported to access terminal (for example, report together in band).In the LTE system, network can be selected to allow to access terminal to use which MCS/Max data-pilot power ratio to send.Yet initial Δ PSD can be based on the MCS in the UL permission (for example, the relation between UL permission and the initial Δ PSD can be based on formula).In addition, most of aforementioned contents relate to the control of honeycomb internal power.Other mechanism that is used for honeycomb internal power control (for example, load control) can be complementary with mechanism described herein.

[90] according to another illustrative examples, periodically and irregularly the up-link power control procedure can combination operation.According to this illustrative examples, can on the basis of irregularly upgrading, go back periodic and upgrade.If there is the PUSCH transmission that is scheduled, these PUSCH transmission may need to have accordingly the PDCCH transmission of UL permission, and therefore, can in PDCCH power control command be sent with the UL permission.For example, if PDCCH for lasting UL transmission unavailable (for example,, not needing the UL permission) owing to the PHY resource is disposed by higher level, so can be on TPC-PDDCH1 transmission power control commands.Simultaneously, if there is the PDSCH that is scheduled on DL, the power of PUCCH control (for example, CQI and ACK/NAK) can become more important so.In this case, can on PDCCH, distribute transmission to be used for the power control command of PUCCH with DL.For the DL transmission that does not have relevant control or for the situation that does not have the DL data activity, can use the cyclical transmission on TPC-DPCCH2 that PUCCH is carried out power control.Therefore, (for example using available resources, for PUSCH uses PDCCH with UL permission, orders for PUCCH uses the PDCCH that has DL and distribute, the periodicity TPC on TPC-PDCCH, it can be relevant with the PUSCH of PUCCH and lasting scheduling,) time, (for example, aperiodically) can transmission power control commands when needs.

[91] turn to Figure 10 now, illustrated is to the leading exemplary sequential chart 1000 that carries out the up-link power control procedure that is used for LTE of balance of power control.Sequential chart 1000 rely on clear and definite or that implicit mode is dispatched, from the leading transmission of power control of base station (perhaps network).At 1002 places, can (perhaps network) sends to and accesses terminal from the base station with UL permission.Can permit UL by the PDCCH transmission manner and transmit.At 1004 places, access terminal power control (PC) leading base station that sends to.Can be with leading based on the determined power level transmission power control of open Loop Power control mechanism.At 1006 places, the respective sectors in the base station can be proofreaied and correct the power setting that accesses terminal according to the power control that receives is leading.Respective sectors in the base station can (for example, TPC) send to power control command to access terminal.Power control command can be single-bit order and/or many bits command.When using clear and definite scheduling, the respective sectors in the base station can send power control command with second the UL permission that is used for data sending of access terminal.According to another illustrative examples, when using implicit scheduling, do not need to permit transmission power control commands with UL, but, access terminal and can use the UL permission that sends at 1002 places on up link, to send data.At 1008 places, access terminal and on up link, data to be sent to the base station.Access terminal and to send data with the power setting after proofreading and correct (power level of for example, determining and adjust based on the received power control command) via open Loop Power control.For example, data can be sent as PUSCH transmission and/or PUCCH transmission.Afterwards, though describe, can realize conventional as described herein closed power control technology when remaining on the LTE_ACTIVE state accessing terminal afterwards.

[92] with reference to figure 11-12, the combination that relates in based on the wireless communications environment of LTE via periodically proofreading and correct, irregularly proofreading and correct or periodically proofread and correct and irregularly proofread and correct has been described, has used power to control leading method in conjunction with the control up-link power.Though for the purpose of concise explanation with method representation and be described as a series of actions, but will understand and recognize, method is not subjected to the restriction of running order, according to one or more embodiment, some actions can occur and/or with shown in this paper and described other action parallel appearance with different order.For example, it should be appreciated by those skilled in the art that and recognize, method replacedly can be expressed as such as a series of correlation behaviors or incident in state diagram.In addition, according to one or more embodiment, do not need all illustrated actions to come implementation method.

[93] with reference to Figure 11, illustrated is to help to generate in based on the wireless communications environment of Long Term Evolution (LTE) the leading method 1100 of power control that is used for power control.At 1102 places, can permit by the respective sectors receiving uplink from the base station.Can transmit the up link permission via physical downlink control channel (PDCCH).For example, when accessing terminal in the LTE_ACTIVE_CPC state, can receive the up link permission.According to another illustrative examples, the up link permission that receives at 1102 places can be first up link permission that obtains after the uplink inactive state.At 1104 places, can adopt based on the power setting of open Loop Power control power is controlled the leading respective sectors that sends in the base station.Power control is leading can be the ul transmissions that (for example, minimum is accessed terminal send the bandwidth capacity delivery) carries out quick detection to channel on system bandwidth partly or completely.For example, power control is leading can be single detection reference signal (SRS) transmission.By the mode of another example, power control is leading can be irregular CQI (CQI) report on uplink data channel.Power control is leading can use two or four frequency hoppings of crossing over system bandwidth in given Transmission Time Interval (TTI).In addition, power control is leading can be the ul transmissions before the uplink data transmission on line link shared channel (PUSCH) and/or the physical uplink control channel (PUCCH) physically.In addition, because closed power is controlled at and accesses terminal that to be in before the LTE_ACTIVE state for accessing terminal may be disabled, can be so be used for the leading power setting of transmission power control based on open Loop Power control.In addition, can be clearly or impliedly dispatch the leading transmission of power control.According to using a clearly example (for example, can clearly indicate transmission characteristic) of scheduling, the up link that receives in 1102 places permission can be controlled leading transmission Resources allocation, modulation that appointment will be used and/or coding etc. for power.According to another illustrative examples (for example, can impliedly indicate transmission characteristic) of using implicit scheduling, can control leading transmission for power predetermined resource, modulation, coding etc. are carried out balance; Like this, access terminal and to use transmission power control on up link such as these predetermined resources, modulation, coding leading, and need not these information clearly are included in the up link permission of 1102 places reception.

[94] at 1106 places, respective sectors received power control command that can be from the base station.Power control command can be used for the power setting of ul transmissions to accessing terminal and adjust.For example, power control command can be that single-bit is proofreaied and correct and/or many bit correction.Like this, access terminal and to make amendment to power setting according to the power control command that receives.In addition, after using that power control is leading power setting is proofreaied and correct, the physical uplink link circuit resource can be redistributed to accessing terminal, and access terminal and to transfer to the LTE_ACTIVE state.In addition, if use clear and definite scheduling, can receive second up link permission, and can use second up link permission to send next uplink data transmission with power control command.Replacedly, if use implicit scheduling, power control command need be by second up link permission not together; But, can use the up link permission that receives at 1102 places to send next uplink data transmission (for example, up link approved applications in this case can be arrived next mixed automatic repeat request (HARQ) cycle).

[95], can data be sent to the base station with adjusted power setting at 1108 places.The correction that can provide by the part as power control command is estimated to make amendment to the open loop that is used for power setting, and can realize transfer of data with this adjusted power setting.If use clearly scheduling, transfer of data can be in response to second the up link permission that obtains with power control command, if perhaps use scheduling impliedly, transfer of data can be in response to the up link permission that receives in 1102 places.Transfer of data can be physical uplink link sharing channel (PUSCH) transmission and/or physical uplink control channel (PUCCH) transmission.According to another example, transfer of data can relate to one group of cyclical transmission (for example, SRS transmission, CQI transmission, PUCCH transmission etc.).

[96] in addition, can follow after the transfer of data at 1108 places power control command is received.When trigger condition occurring, can be on down link transmission power control commands.Power control command can be single-bit order and/or many bits command.In addition, can be via physical downlink control channel (PDCCH) or PDCCH/PDSCH (physical down link sharing channel) to obtaining power control command.In addition, can perhaps power control command can be received in the band of other data that send with respective sectors from the base station with power control command as independently transmission reception.Then, can change the power setting that is used in the transfer of data use at 1108 places based on power control command.In addition, on the time that does not obtain power control command, do not need to carry out this change to power setting.According to another example, no matter whether receive and use power control command that power setting is adjusted, can use open Loop Power control mechanism to change power setting.By the mode of another explanation, can utilize by any kind (such as periodically and/or irregular) power setting that changes of power control command sends data on up link.

[97] turn to Figure 12 now, illustrated is to help in based on the wireless communications environment of Long Term Evolution (LTE) being used for the leading estimation approach 1200 of carrying out of power control of power control.At 1202 places, up link can be permitted send to access terminal.When accessing terminal in the LTE_ACTIVE_CPC state, can send the up link permission.In addition, can on PDCCH, send the up link permission.According to an example, the up link permission can be dispatched clearly from the leading transmission (for example, can clearly indicate transmission characteristic) of power control that accesses terminal; Like this, according to this example, access terminal and to distribute the resource that will be used for power control preamble transmission, modulation, coding etc.Mode by another example, access terminal and (for example to control the predetermined resource of leading transmission use, modulation, coding etc. for power, implicit scheduling, transmission characteristic can impliedly be indicated ...), and can with the up link approved applications that sends at 1202 places in send by accessing terminal with relevant uplink data transmission of next mixed automatic repeat request (HARQ) cycle.

[98], can control leading the reception to power at 1204 places.Can be leading from the transmission power control that accesses terminal with power level based on the open Loop Power control setting.In addition, can from the power control that receives is leading, verify to access terminal and control leading employed power level for delivering power.Power control is leading can be the ul transmissions that (for example, minimum is accessed terminal send the bandwidth capacity delivery) carries out quick detection to channel on some or all of system bandwidth.For example, power control is leading can use two or four frequency hoppings of crossing over system bandwidth in given Transmission Time Interval (TTI).For example, power control is leading can be single detection reference signal (SRS) transmission.By the mode of another example, power control is leading can be irregular CQI (CQI) report on uplink data channel.

[99] at 1206 places, can be based on the leading analysis of power control be generated power control command, wherein, power control command can be proofreaied and correct the power level that accesses terminal.By the mode of explanation, power control command can be that the single-bit of the employed power level that accesses terminal is proofreaied and correct and/or many bit correction.At 1208 places, power control command transmitting can be delivered to and access terminal.When using when clearly dispatching, second up link permission can be sent with power control command, and access terminal and to use second up link permission to send next uplink data transmission.Replacedly, when using implicit scheduling, power control command need be with second up link permission, but, access terminal and can use the up link that sends at 1202 places to permit to send next uplink data transmission.In addition, after using that power control is leading power level is proofreaied and correct, the physical uplink link circuit resource can be redistributed to accessing terminal, and access terminal and to transfer to LTE ACTIVE state.At 1210 places, can receive with the uplink data transmission of power level after proofreading and correct from accessing terminal and sending.Transfer of data can be physical uplink link sharing channel (PUSCH) transmission and/or physical uplink control channel (PUCCH) transmission.According to another example, this transfer of data can relate to one group of cyclical transmission (for example, SRS transmission, CQI transmission, PUCCH transmission ...).

[100] when receiving uplink data transmission, can judge whether to adjust the employed power level when sending uplink data transmission that accesses terminal at 1210 places.According to an example, power level and target can be compared, and if difference surpass threshold value, so just can trigger adjustment; Otherwise, if difference less than threshold value, does not just need to adjust so this moment.In addition, can determine adjustment amount to the power level that accesses terminal.When determining adjust power level, can work as by measuring (for example, in the measurement that the received power level outside the boundary is set ...) when triggering irregular power control command transmitting delivered to and access terminal, to change power level.Like this, can send irregular power control command as required.Irregularly power control command can be single-bit proofread and correct (for example ,/down, ± 1dB ...) and/or many bit correction (for example, ± 1dB, ± 2dB, ± 3dB, ± 4dB ...).In addition, irregular power control command can be mapped to physical downlink control channel (PDCCH) or the right particular instance of PDCCH/PDSCH (physical down link sharing channel).In addition, can send independently or in the band of other transfer of data, sending irregular power control command.In addition, for example, can send irregular power control command via unicast transmission.

[101] according to one or more aspects described herein, will recognize to have about use that the power control of irregular power control is leading can make inference.As used herein, general, term " deduction " or " inference " are meant the process of from a series of observations of catching via incident and/or data system, environment and/or state of user being carried out inference or deduction.For example, can use inference that specific context or behavior are discerned, perhaps can generate the probability distribution of state.Inference can be probable property, that is to say, based on considering the calculating to the states of interest probability distribution of data and incident.Inference can also refer to be used for form from a series of incidents and/or data the technology of higher level incident.No matter whether incident is relevant in closely near the time, and no matter incident and data are from still several incidents and a data source, and this inference all causes making up new incident or behavior from a series of incidents that observe and/or the event data of being stored.

[102] according to an example, above given one or more methods can comprise and make the inference of whether using clearly dispatching of up-link power control preamble transmission and/or implicit scheduling about identification.By the mode of another explanation, can make about identification will be used for power control leading on the inference of resource of uplink transmission.To recognize that previous example is illustrative in itself, and not be the number of wanting to limit the inference that to make in conjunction with each embodiment described herein and/or method, and not be to want to limit the mode of making these inferences.

[103] Figure 13 is 1300 the explanation of accessing terminal, and accessing terminal 1300, to help to be used in based on the wireless communication system of LTE the power control of power control leading.Access terminal and 1300 comprise receiver 1302, for example, receiver 1302 is from reception antenna (not shown) received signal, and typical (for example the operation of signal execution to being received, filtering, amplification, down conversion etc.), and the signal after regulating is carried out digitlization sample with acquisition.For example, receiver 1302 can be the MMSE receiver, and can comprise demodulator 1304, and demodulator 1304 can carry out demodulation and they be offered processor 1306 being used for channel estimating to the symbol that is received.Processor 1306 can be to be exclusively used in the information that receiver 1302 is received to analyze and/or generate the processor that is used for by transmitter 1316 information transmitted, can be the processor that 1300 the one or more assemblies of accessing terminal are controlled, and/or can be that the information that receiver 1302 is received is analyzed, generated and be used for by transmitter 1316 information transmitted and processor that 1300 the one or more assemblies of accessing terminal are controlled.

[104] in addition, access terminal and 1300 can also comprise memory 1308, memory 1308 can be operationally connected to processor 1306, and memory 1308 can be stored data, data that received that will send, distribute to access terminal 1300 identifier, the information relevant with the power control command that is obtained and any other appropriate information that is used to select whether to carry out power control command.In addition, memory 1308 can also storage protocol and/or algorithms, these agreements and/or algorithm be created on up link on the power that sends control leading and/or estimate relevant to the power level that is used to transmit based on open loop mechanism.

To recognize that [105] storage described herein (for example, memory 1308) can be volatile memory or nonvolatile memory, perhaps can comprise volatibility and nonvolatile memory.By the mode of explanation rather than restriction, nonvolatile memory can comprise read-only memory (ROM), programming ROM (PROM), electrically programmable ROM (EPROM), electric erasable PROM (EEPROM) or flash memory.Volatile memory can comprise random access storage device (RAM), and it can be used as the external cache memory.By the mode of explanation rather than restriction, RAM is available in the many forms such as synchronous random access memory (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate SDRAM (DDR SDRAM), enhancing SDRAM (ESDRAM), synchronization link DRAM (SLDRAM) and direct Rambus RAM (DRRAM).The memory 1308 of thematic system and method is a memory of wanting to comprise these and any other adequate types, rather than will be limited to this.

[106] receiver 1302 can also be operationally connected to UL power manager 1310,1310 pairs of UL power manager access terminal and 1300 are used for controlling via the power level that up link sends.UL power manager 1310 can be provided for sending via the uplink channel of any kind the uplink power level of data, control signal etc.UL power manager 1310 can use open loop mechanism to select uplink power level.In addition, UL power manager 1310 power control command that can use receiver 1302 to be obtained is adjusted uplink power level.In addition, UL power manager 1310 and/or receiver 1302 can be connected to leading generator 1312, leading generator 1312 produces the power that is used for so that certain power level (for example, being determined based on open loop mechanism by UL power manager 1310) sends and controls leading on up link.It is leading to send the power control that is produced by leading generator 1312, so that come the quick detection uplink channel with the ul transmissions of crossing over the wireless communications environment bandwidth.In addition, as to the leading response of power control, can be from base station received power control command, and UL power manager 1310 can use power control command, so that the open loop that is used for the leading power level of power control is estimated to adjust.Accessing terminal 1300 also comprises modulator 1314 and transmitter 1316, and for example, transmitter 1316 sends signal to the base station, another accesses terminal etc.Though be described as separating, will recognize that UL power manager 1310, leading generator 1312 and/or modulator 1314 can be the parts of processor 1306 or a plurality of processor (not shown) with processor 1306.

[107] Figure 14 is the explanation of system 1400, and system 1400 helps in based on the wireless communications environment of LTE being used for leading analysis of power control of power control.System 1400 (for example comprises base station 1402, access point, eNB ...) in the sector, base station 1402 has receiver 1410 and transmitter 1422, receiver 1410 receives from one or more signals of 1404 of accessing terminal by 1406 pairs of a plurality of reception antennas, and transmitter 1,422 1404 sends to one or more accessing terminal by transmitting antenna 1408.Receiver 1410 can be from reception antenna 1406 reception information, and operationally relevant with the demodulator 1412 that the information that is received is carried out demodulation.Symbol after 1414 pairs of demodulation of processor is analyzed, processor 1414 can be similar to top about the described processor of Figure 13, and be connected to memory 1416,1416 pairs of memories and access terminal identification symbol are (for example, MACID ...) relevant information, data (for example, power control command, the up link permission that will send to or receive from 1404 (the perhaps different base station (not shown)) that access terminal ...) and/or various operations with function relevant any other appropriate information given with carrying out this paper store.Also processor 1414 is connected to received power monitor 1418, the signal that power monitor 1418 obtains based on 1402 places in the base station 1404 employed uplink power level that obtain accessing terminal.For example, received power monitor 1418 can be to analyzing from the uplink power level of PUSCH transmission.According to another illustrative examples, received power monitor 1418 can be to estimating from the uplink power level of periodicity ul transmissions.

[108] received power monitor 1218 can be operably connected to leading estimator 1420,1420 pairs of base stations 1402 of leading estimator are from 1404 leading analyses of power control that obtain that access terminal.Leading estimator 1420 is also proofreaied and correct sending the leading employed power level that accesses terminal of this power control.Like this, leading estimator 1420 generates being used for inserting the power control command that terminal power level is adjusted of will sending.In addition, leading estimator 1420 can be able to be operationally connected to modulator 1422.Modulator 1422 can carry out multiplexing to power control command, accesses terminal 1404 to be transferred to by antenna 1408 by transmitter 1426.Though be described as separating, will recognize that received power monitor 1418, leading estimator 1420 and/or modulator 1422 can be the parts of processor 1414 or a plurality of processor (not shown) with processor 1414.

[109] Figure 15 shows example wireless communications 1500.For easy, wireless communication system 1500 has been described access terminal sector in 1550 of a base station 1510 and.Yet, to recognize, system 1500 can comprise more than a base station and/or access terminal more than one, wherein, and extra base station and/or access terminal and can and access terminal 1550 identical in fact or different with following described exemplary base 1510.In addition, will recognize that base station 1510 and/or access terminal and 1550 can use system described herein (Fig. 1-6,13-14 and 16-17) and/or method (Figure 11-12) is so that help radio communication therebetween.

[110] 1510 places in the base station, the business datum that will be used for a plurality of data flow offers transmission (TX) data processor 1514 from data source 1512.According to an example, can on each antenna, send each data flow.The specific coding scheme that TX data processor 1514 is based upon this data flow selection formats, encodes and interweave this business data flow, so that the data behind the coding are provided.

[111] data and the pilot data that can use OFDM (OFDM) technology will be used for behind the coding of each data flow carries out multiplexing.In addition or replacedly, can carry out frequency division multiplexing (FDM), Time Division Multiplexing or code division multiplexing (CDM) to frequency pilot sign.Typically, pilot data is the known data patterns of handling in a known way, and can be used for channel response is estimated at 1550 places that access terminal.(for example can be based upon certain modulation schemes that each data flow selects, binary phase shift keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM) etc.) to the pilot tone after multiplexing and the data after being used for the coding of this data flow (for example modulate, sign map), so that modulation symbol is provided.Data rate, coding and the modulation of each data flow can be provided by processor 1530 instructions performed or that provided.

[112] modulation symbol that is used for data flow can be offered TX MIMO processor 1520, it can further handle (for example, being used for OFDM) to modulation symbol.Subsequently, TX MIMO processor 1520 offers NT transmitter (TMTR) 1522a to 1522t with NT stream of modulation symbols.In each embodiment, TX MIMO processor 1520 is applied to the symbol of data flow with the beam shaping weighting, and is applied to send from it antenna of symbol.

[113] each transmitter 1522 receives and handles each symbols streams, so that one or more analog signals are provided, and analog signal is further regulated (for example, amplification, filtering and up conversion), on mimo channel so that the modulation signal that is suitable for transmitting is provided.In addition, NT the modulation signal of the machine of spontaneous emission in the future 1522a to 1522t sends from NT antenna 1524a to 1524t respectively.

[114], by NR antenna 1552a to 1552r the modulation signal that is sent is received, and will offer each receiver (RCVR) 1554a to 1554r from the signal that each antenna 1552 receives at 1550 places that access terminal.1554 pairs of each receivers signal are separately regulated (for example, filtering, amplification and down conversion), and the signal after regulating is carried out digitlization so that sampling is provided, and further sampling are handled so that corresponding " reception " symbols streams is provided.

[115] RX data processor 1560 can receive and handle NR receiving symbol stream from NR receiver 1554 based on specific receiver treatment technology, so that the symbols streams of NT " detecting " is provided.RX data processor 1560 can carry out demodulation, deinterleaving and decoding to each detected symbols streams, so that recover to be used for the business datum of this data flow.The processing of RX data processor 1560 is with the performed processing of the 1510 TX MIMO of place processors 1520 and TX data processor 1514 is complementary in the base station.

[116] processor 1570 can periodically determine to use which kind of available techniques as discussed above.In addition, processor 1570 can generate the reverse link message that comprises matrix index part and order value part.

[117] reverse link message can comprise the various types of information about communication link and/or receiving data stream.Can handle by 1538 pairs of reverse link message of TX data processor, modulate by 1580 pairs of reverse link message of modulator, 1554a to 1554r regulates reverse link message by transmitter, and reverse link message is sent it back base station 1510; Wherein, TX data processor 1538 can also receive the business datum that is used for a plurality of data flow from data source 1536.

[118] 1510 places in the base station, receive from 1550 the modulation signal of accessing terminal by 1524 pairs on antenna, adjusted by receiver 1522, by demodulator 1540 it is carried out demodulation, and by RX data processor 1542 it is handled, so that extract by 1550 reverse link message that send that access terminal.In addition, processor 1530 can be handled the message of being extracted, so that determine to use which pre-coding matrix to determine the beam shaping weight.

[119]

processor

1530 and 1570 can indicate (for example, control, coordination, management etc.) in the base station 1510 and the operation at 1550 places of accessing terminal respectively.Each processor 1530 can be with program code stored relevant with memory of

data

1532 and 1572 with 1570.

Processor

1530 and 1570 can also be carried out calculating, so that obtain being respectively applied for the frequency and the impulse response estimation of up link and down link.

[120] will be appreciated that, can in hardware, software, firmware, middleware, microcode or its any combination, realize embodiment described herein.Realize for hardware, can be at one or more application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), digital signal processor spare (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, other is designed to carry out realization processing unit in the electronic unit of function described herein or its combination.

[121] when in software, firmware, middleware or microcode, program code or code segment, realizing these embodiment, they can be stored in the machine readable media such as memory module.Code segment can be represented any combination of process, function, subprogram, program, routine, subroutine, module, software kit, class or instruction, data structure or program statement.Can code segment be connected to another code segment or hardware circuit by transmission and/or reception information, data, variable, parameter or memory content.Can use any suitable module that comprises Memory Sharing, message transmission, token passing, Network Transmission etc. that information, variable, parameter, data etc. are transmitted, transmit or send.

[122] realize for software, can realize technology described herein with the module (for example: program, function etc.) of carrying out function described herein.Software code can be stored in the memory cell, and carry out this software code by processor.Can be in processor inside or the outside memory cell of realizing of processor, under the outside situation that realizes memory cell of processor, can memory cell be communicated to connect processor via various means as known in the art.

[123] with reference to Figure 16, illustrated is system 1600, and it makes it possible to control the power control command that leading generation is used to access terminal based on power in wireless communications environment.For example, system 1600 can be arranged in the sector of base station to small part.To recognize, and system 1600 is expressed as will comprise the function square frame that it can be a function square frame of representing the function that processor, software or its combination (for example, firmware) realized.System 1600 comprise can crew-served electronic building brick logical groups 1602.For example, logical groups 1602 can comprise the electronic building brick 1604 that is used for sending the up link permission on down link.In addition, logical groups 1602 can comprise and is used to obtain the leading electronic building brick 1606 of power control that sends with the power level of estimating according to open loop power to determine.In addition, logical groups 1602 can comprise the electronic building brick 1608 that is used to send the power control command that power level is proofreaied and correct.Logical groups 1602 can also comprise the electronic building brick 1610 that is used to obtain the uplink data transmission of carrying out with the power level after proofreading and correct.In addition, system 1600 can comprise memory 1612, and its preservation is used to carry out the instruction of the function relevant with electronic building brick 1604,1606,1608 and 1610.Though be expressed as in memory 1612 outsides, will understand, one or more electronic building bricks 1604,1606,1608 and 1610 may reside in the memory 1612.

[124] turn to Figure 17, illustrated is system 1700, and it makes it possible to use in wireless communications environment power control leading.For example, system 1700 can be positioned at and access terminal.As described, system 1700 comprises a plurality of function square frames, and it can represent the function that is realized by processor, software or its combination (for example, firmware).System 1700 comprise can crew-served electronic building brick logical groups 1702.Logical groups 1702 can comprise the electronic building brick 1704 that is used to obtain the up link permission.In addition, logical groups 1702 can comprise the leading electronic building brick 1706 of power level transmission up-link power control that is used for to estimate according to open Loop Power control to select.In addition, logical groups 1702 can comprise the electronic building brick 1708 of the power control command of the power level that is used to acquire change.Simultaneously, logical groups 1702 can comprise the electronic building brick 1710 that is used for sending with the power level after changing uplink data.In addition, system 1700 can comprise memory 1712, and its preservation is used to carry out the instruction of the function relevant with electronic building brick 1704,1706,1708 and 1710.Though be expressed as in memory 1712 outsides, will understand, electronic building brick 1704,1706,1708 and 1710 may reside in the memory 1712.

The example of one or more embodiment has been described [125].Certainly, can not be for purpose that previous embodiment is described the line description that is combined into, but those skilled in the art will appreciate that to each possible assembly or method, be possible to many further combination and the displacement of each embodiment.Therefore, described embodiment is change, the modifications and variations of wanting to comprise in all these spirit and scope that fall into claims.In addition, as for describe in detail or claim in use term " to comprise ", this term is to want the explanation that " comprises " with the term that is similar to when using to the transition speech in the claims such, what expression was open comprises.

Claims

1, a kind ofly help to be created in the leading method of using in the wireless communications environment of power control, comprising:

From the permission of base station receiving uplink, described up link permission is first up link permission after the uplink inactive state;

With power setting power is controlled the leading described base station that sends to based on open Loop Power control;

From described base station received power control command, described power control command is adjusted described power setting; And

With described adjusted power setting data are sent to described base station.

2, the control of the method for claim 1, wherein described power is leading is ul transmissions by using frequency hopping on system bandwidth partly or completely channel to be surveyed in given Transmission Time Interval (TTI).

3, the method for claim 1, wherein described power control is leading is single detection reference signal (SRS) transmission.

4, the control of the method for claim 1, wherein described power is leading is irregular CQI (CQI) report on uplink data channel.

5, the method for claim 1, wherein indicate the leading transmission characteristic of described power control clearly.

6, method as claimed in claim 5 also comprises:

As the response to the permission of described up link, it is leading to use in described up link permission in clearly resource, modulation or the coding of appointment at least one to send described power control;

Receive second up link permission from described base station with described power control command; And

By using described second up link permission that receives with described power control command that described data are sent to described base station.

7, the method for claim 1, wherein impliedly indicate the leading transmission characteristic of described power control.

8, method as claimed in claim 7 also comprises:

As response to described up link permission, it is leading to use in predetermined resource, predetermined modulation or the predictive encoding at least one to send described power control, in described predetermined resource, predetermined modulation or the predictive encoding described at least one before receiving described up link permission for accessing terminal and described base station sets;

By using the described up link permission that before receiving described power control command, receives that described data are sent to described base station.

9, the method for claim 1 also comprises as the response received power control command to described transfer of data.

10, a kind of radio communication device comprises:

Memory, it is held instruction, and described instruction is used for: obtain the up link permission from the base station, described up link permission is first up link permission after the uplink inactive state; Estimate to be identified for the power level of power control preamble transmission based on open loop; With described power level power is controlled the leading described base station that sends to; From described base station received power control command; Change described power level based on described power control command; And uplink data transmission is sent to described base station with the power level that changes according to described power control command; And

Be connected to the processor of described memory, be configured as and carry out the described instruction that is kept in the described memory.

11, radio communication device as claimed in claim 10, wherein, the control of described power is leading to be ul transmissions by using frequency hopping on system bandwidth partly or completely channel to be surveyed in given Transmission Time Interval (TTI).

12, radio communication device as claimed in claim 10, wherein, described power control is leading to be single detection reference signal (SRS) transmission.

13, radio communication device as claimed in claim 10, wherein, the control of described power is leading to be irregular CQI (CQI) report on uplink data channel.

14, radio communication device as claimed in claim 10 wherein, is indicated the leading transmission characteristic of described power control clearly.

15, radio communication device as claimed in claim 14, wherein, described memory is also held instruction, and described instruction is used for: as the response to described up link permission, it is leading that use clear and definite specified message in described up link permission sends described power control; Obtain second up link permission from described base station with described power control command; And by using described second up link permission that obtains simultaneously with described power control command to send described uplink data transmission.

16, radio communication device as claimed in claim 10 wherein, is impliedly indicated the leading transmission characteristic of described power control.

17, radio communication device as claimed in claim 16, wherein, described memory is also held instruction, described instruction is used for: as the response to described up link permission, to send described power control leading for the predetermined information that accesses terminal and described base station is default before obtaining described up link permission in use, and permit in the described up link that obtains to receive before the described power control command and to send described uplink data transmission by using.

18, radio communication device as claimed in claim 10, wherein, described memory is also held instruction, and described instruction is used for: obtain power control command as the response to described uplink data transmission.

19, a kind of radio communication device, it makes it possible to use in wireless communications environment power control leading, comprising:

Be used to obtain the module of up link permission, described up link permission is first up link permission after the uplink inactive state;

Be used for to estimate that according to open Loop Power control the power level of selecting transmits the leading module of up-link power control;

Be used to obtain the module of power control command that described power level is changed; And

Be used for sending the module of uplink data with the power level after the described change.

20, radio communication device as claimed in claim 19, wherein, described up-link power control is leading is by using frequency hopping to come the partly or completely ul transmissions of system bandwidth is surveyed and crossed over to channel in given Transmission Time Interval (TTI).

21, radio communication device as claimed in claim 19, wherein, described up-link power control is leading to be single detection reference signal (SRS) transmission.

22, radio communication device as claimed in claim 19, wherein, the control of described up-link power is leading to be irregular CQI (CQI) report on uplink data channel.

23, radio communication device as claimed in claim 19 also comprises:

Be used for as response, when having dispatched the leading transmission of described up-link power control clearly, use the information that in described up link permission, clearly comprises to transmit the leading module of described up-link power control the permission of described up link;

Be used for obtaining simultaneously the module of second up link permission with described power control command; And

Be used for sending the module of described uplink data as response to described second up link permission of obtaining simultaneously with described power control command.

24, radio communication device as claimed in claim 19 also comprises:

Be used for as response described up link permission, when impliedly having dispatched the leading transmission of described up-link power control, use before obtaining described up link permission, to access terminal and reasoning known predetermined information in described base station transmits the leading module of described up-link power control; And

Be used for permitting the module that sends described uplink data by using in the described up link that obtains to receive before the described power control command.

25, radio communication device as claimed in claim 19 also comprises the module that is used for as the response of described uplink data transmission being obtained power control command.

26, a kind of machine readable media of storing machine-executable instruction thereon, described machine-executable instruction is used for:

The permission of acquisition up link, described up link permission are first up link permissions after the uplink inactive state;

To estimate that according to open Loop Power control the power level of selecting transmits up-link power and controls leading;

The power control command of the described power level that acquires change; And

Send uplink data with the power level after the described change.

27, machine readable media as claimed in claim 26, wherein, described up-link power control is leading is by using frequency hopping to come the partly or completely ul transmissions of system bandwidth is surveyed and crossed over to channel in given Transmission Time Interval (TTI).

28, machine readable media as claimed in claim 26, wherein, described up-link power control is leading to be single detection reference signal (SRS) transmission.

29, machine readable media as claimed in claim 26, wherein, the control of described up-link power is leading to be irregular CQI (CQI) report on uplink data channel.

30, machine readable media as claimed in claim 26, described machine-executable instruction also comprises: as the response to described up link permission, when having dispatched the leading transmission of described up-link power control clearly, it is leading to use the information that clearly comprises in described up link permission to transmit described up-link power control; Obtain second up link permission simultaneously with described power control command; And, send described uplink data as response to described second up link permission of obtaining simultaneously with described power control command.

31, machine readable media as claimed in claim 26, described machine-executable instruction also comprises: as the response to described up link permission, when impliedly having dispatched the leading transmission of described up-link power control, use before obtaining described up link permission, access terminal and the known predetermined information of described base station reasoning to transmit described up-link power control leading; And permit in the described up link that obtains to receive before the described power control command and to send described uplink data by using.

32, machine readable media as claimed in claim 26, described machine-executable instruction also comprise as the response acquisition power control command to described uplink data transmission.

33, a kind of device in wireless communication system comprises:

Processor is configured as:

Obtain the up link permission from the base station, described up link permission is first up link permission after the uplink inactive state;

Estimate to be identified for the power level of power control preamble transmission based on open loop;

With described power level power is controlled the leading described base station that sends to;

From described base station received power control command;

Change described power level based on described power control command; And

With the power level after the described change uplink data transmission is sent to described base station.

34, a kind of helping, controlled the leading estimation approach of carrying out to the power that is used for power control in wireless communications environment, comprising:

Up link permission sent to access terminal;

Reception is controlled leading with the power level based on the open Loop Power control setting from the described power that sends that accesses terminal;

Based on the leading analysis of described power control is generated power control command, described power control command is proofreaied and correct the described described power level that accesses terminal;

Described power control command transmitting is delivered to described accessing terminal; And

The power level of reception after with described correction is from the described uplink data transmission that accesses terminal and send.

35, method as claimed in claim 34, wherein, described power control is leading to be by using frequency hopping channel to be surveyed and crossed over the partly or completely ul transmissions of system bandwidth in given Transmission Time Interval (TTI).

36, method as claimed in claim 34, wherein, described power control is leading to be single detection reference signal (SRS) transmission.

37, method as claimed in claim 34, wherein, the control of described power is leading to be irregular CQI (CQI) report on uplink data channel.

38, method as claimed in claim 34 also comprises and dispatches the leading transmission of described power control that accesses terminal from described clearly.

39, method as claimed in claim 38 also comprises:

Transmission has the described up link permission of clear and definite appointed information, described access terminal to control when the described power of transmission use described clear and definite appointed information when leading;

Send second up link permission simultaneously with described power control command; And

Receive the described uplink data transmission that sends as to the response of described second up link permission of sending simultaneously with described power control command.

40, method as claimed in claim 34 also comprises and impliedly dispatches the leading transmission of described power control that accesses terminal from described.

41, method as claimed in claim 40 also comprises:

Receive as the response of described up link permission is used before the transmission of described up link permission for described access terminal and the predetermined information of base station definition leading from the described described power control that sends of accessing terminal; And

Reception is by using the described up link permission that was sent before the transmission of described power control command from the described described uplink data transmission that accesses terminal and send.

42, method as claimed in claim 34 also comprises as the response to described uplink data transmission, transmission power control commands when trigger condition occurring.

43, a kind of radio communication device comprises:

Memory, it is held instruction, and described instruction is used for: transmit the up link permission; Acquisition is leading via the power control that up link sends with the power level of determining by open Loop Power control mechanism; Based on the leading estimation of described power control is produced the power control command that described power level is proofreaied and correct; Send described power control command via down link; And obtain uplink data transmission with the transmission of the power level after the described correction; And

44, radio communication device as claimed in claim 43, wherein, described power control is leading to be by using frequency hopping channel to be surveyed and crossed over the partly or completely ul transmissions of system bandwidth in given Transmission Time Interval (TTI).

45, radio communication device as claimed in claim 43, wherein, described power control is leading to be single detection reference signal (SRS) transmission.

46, radio communication device as claimed in claim 43, wherein, the control of described power is leading to be irregular CQI (CQI) report on uplink data channel.

47, radio communication device as claimed in claim 43, wherein, described memory is also held instruction, and described instruction is used for dispatching clearly the leading transmission of described power control.

48, radio communication device as claimed in claim 47, wherein, described memory is also held instruction, and described instruction is used for: send the described up link permission with clear and definite appointed information, wherein access terminal to control when the described power of transmission and use described clear and definite appointed information when leading; Send second up link permission simultaneously via down link and described power control command; And obtain the described uplink data transmission that sends as to the response of described second up link permission of sending simultaneously with described power control command.

49, radio communication device as claimed in claim 43, wherein, described memory is also held instruction, and described instruction is used for impliedly dispatching the leading transmission of described power control.

50, radio communication device as claimed in claim 49, wherein, described memory is also held instruction, and described instruction is used for: obtain as the response of described up link permission is used before the transmission of described up link permission for the described power control that accesses terminal and the predetermined information of base station definition sends leading; And obtain by using the described uplink data transmission of the described up link permission transmission that before the transmission of described power control command, is transmitted.

51, radio communication device as claimed in claim 43, wherein, described memory is also held instruction, and described instruction is used for: as response to described uplink data transmission, delivering power control command when trigger condition occurring.

52, a kind ofly can be in wireless communications environment control the radio communication device of the power control command that leading generation is used to access terminal, comprising based on power:

Be used on down link, sending the module of up link permission;

The power that is used to obtain so that the power level of estimating according to open loop to determine sends is controlled leading module;

Be used to send the module of the power control command that described power level is proofreaied and correct; And

Be used to obtain the module of the uplink data transmission that sends with the power level after the described correction.

53, radio communication device as claimed in claim 52, wherein, described power control is leading to be by using frequency hopping channel to be surveyed and crossed over the ul transmissions of a part in the whole system bandwidth in given Transmission Time Interval (TTI).

54, radio communication device as claimed in claim 52, wherein, described power control is leading to be single detection reference signal (SRS) transmission.

55, radio communication device as claimed in claim 52, wherein, the control of described power is leading to be irregular CQI (CQI) report on uplink data channel.

56, radio communication device as claimed in claim 52 also comprises:

Be used for described power being controlled the module that leading transmission is dispatched in clear and definite mode;

Be used to send the module of described up link permission, wherein access terminal to control and use described clear and definite appointed information when leading when the described power of transmission with clear and definite appointed information; And

Be used for second up link being permitted the module that sends simultaneously with described power control command via down link; And

Be used to obtain module as the described uplink data transmission that the response of described second up link permission is sent.

57, radio communication device as claimed in claim 52 also comprises:

Be used for impliedly dispatching the module of the leading transmission of described power control;

Be used to obtain be the leading module of described power control that accesses terminal and the predetermined information of base station sets sends as the response of described up link permission being used before sending described up link permission; And

Be used to obtain to permit the module of the described up link circuit-switched data transmission that sends by the described up link that use was transmitted before the transmission of described power control command.

58, radio communication device as claimed in claim 52 also comprises the response that is used for as to described uplink data transmission, the module of delivering power control command when trigger condition occurring.

59, a kind of machine readable media with machine-executable instruction of storing thereon, described machine-executable instruction is used for:

On down link, send the up link permission;

Acquisition is leading with the power control that the power level of estimating according to open loop to determine sends;

The power control command that transmission is proofreaied and correct described power level; And

The uplink data transmission that the power level of acquisition after with described correction sends.

60, machine readable media as claimed in claim 59, wherein, described power control is leading to be by using frequency hopping channel to be surveyed and crossed over the partly or completely ul transmissions of system bandwidth in given Transmission Time Interval (TTI).

61, machine readable media as claimed in claim 59, wherein, described power control is leading to be single detection reference signal (SRS) transmission.

62, machine readable media as claimed in claim 59, wherein, the control of described power is leading to be non-periodic channel quality indicator (CQI) report on uplink data channel.

63, machine readable media as claimed in claim 59, described machine-executable instruction also comprises: in clear and definite mode the leading transmission of described power control is dispatched; Transmission has the described up link permission of clear and definite appointed information, wherein accesses terminal to control when the described power of transmission to use described clear and definite appointed information when leading; Via down link described power control command and second up link permission are sent simultaneously; And the described uplink data transmission that acquisition sends as the response that described second up link permitted.

64, machine readable media as claimed in claim 59, described machine-executable instruction also comprises: impliedly dispatch the leading transmission of described power control; Obtain as the response of described up link permission is used before sending described up link permission for the described power control that accesses terminal and the predetermined information of base station sets sends leading; And obtain by utilizing the described up link that before the transmission of described power control command, transmits to permit the described uplink data transmission that sends.

65, machine readable media as claimed in claim 59, described machine-executable instruction also comprises: as response to described uplink data transmission, delivering power control command when trigger condition occurring.

66, a kind of device in wireless communication system, comprising: processor is configured as:

Up link permission sent to access terminal;

Described power control command transmitting is delivered to described terminal; And