CN105144804B - Method and apparatus in coordinated multipoint transmission scheme for up-link transmission power control and timing - Google Patents

Abstract

Provide a kind of method for wireless communications, device and computer program product.The device of first cellular cell and the second cellular cell are about the user equipment in the scope expansion zoning for going to the first cellular cell to data carried out to control information and by the first cellular cell carried out by the second cellular cell（UE）Cooperative multiple spot（CoMP）Transmission is communicated, and determines the expectation transmitted power level about the uplink transmission for going to the first cellular cell carried out by UE, and the expectation transmitted power level transmitted about the uplink is provided to the second cellular cell.

Description

For up-link transmission power control and timing in coordinated multipoint transmission scheme Method and apparatus

Cross reference to related applications

This application claims in " METHOD AND APPARATUS FOR UPLINK submitting, entitled on October 3rd, 2011 TRANSMISSION POWER CONTROL AND TIMING IN COORDINATED MULTIPOINT TRANSMISSION SCHEMES（Method and apparatus in coordinated multipoint transmission scheme for up-link transmission power control and timing）" beauty State provisional application S/N.61/542,656 and in " METHOD AND APPARATUS submitting, entitled on October 2nd, 2012 FOR UPLINK TRANSMISSION POWER CONTROL AND TIMING IN COORDINATED MULTIPOINT TRANSMISSION SCHEMES（Method in coordinated multipoint transmission scheme for up-link transmission power control and timing And device）" U.S. Patent application S/N.13/633,789 equity, this two application be transferred to present assignee and Entire contents are clearly included in by quoting in this.

Background

Field

The present disclosure relates generally to communication systems, and more particularly to coordinated multipoint transmission scheme in for uplink send out The method and apparatus for penetrating power control and timing.

Background

Wireless communication system is widely deployed various to provide phone, video, data, information receiving and transmitting and broadcast etc. Telecommunications service.Typical wireless communication system can be used can be by sharing available system resource（For example, bandwidth, transmitting function Rate）To support the multiple access technology with multi-user communication.The example of this kind of multiple access technology includes CDMA（CDMA）System, time-division Multiple access（TDMA）System, frequency division multiple access（FDMA）System, orthogonal frequency division multiple access（OFDMA）System, single-carrier frequency division multiple access（SC- FDMA）System and TD SDMA（TD-SCDMA）System.

These multiple access technologies be adopted in various telecommunication standards with provide enable different wireless devices city, The common protocol communicated in country, area and even global rank.One example of emerging telecommunication standard is long term evolution （LTE）.LTE is to by third generation partnership project（3GPP）The Universal Mobile Telecommunications System of promulgation（UMTS）One group of mobile standard Enhancing.It is designed to by improving spectrum efficiency, reducing cost, improvement service, using new frequency spectrum and preferably and under Line link（DL）It is upper to use OFDMA, in uplink（UL）It is upper to use SC-FDMA and use multiple-input and multiple-output（MIMO）It Other open standards of line technology integrate that mobile broadband internet is preferably supported to access.However, being connect with to mobile broadband The demand sustainable growth entered, further improved needs will be made in LTE technology by existing.Preferably, these improvement should fit For other multiple access technologies and using the telecommunication standard of these technologies.

Another example is use coordinated multipoint transmission for LTE technology improved（CoMP）Scheme, plurality of base station（It is all Such as evolved B node（eNB））The DL for coordinating to go to UE is transmitted.Coordinated by using the mutiple antennas on UE and combine from The signal that eNB is received, CoMP will access and shared video, photo and other high-bandwidth services in provide consistent performance and Quality, regardless of the UE close to the cellular cell LTE center still in its outer edge.Therefore, CoMP can dramatically increase network Capacity and performance.

Various schemes can be used to realize for CoMP.A kind of realization of CoMP scheme is " joint transmission " scheme, plurality of ENB transmission is intended to the identical data of a UE.In the example present, the connection of all antennas across the eNB related to can be used Close precoding vector.In another realization for being known as " distributed MIMO " scheme, eNB will be intended to the different data piece work of a UE It is transmitted for different MIMO layer.For example, the first MIMO layer is transmitted by an eNB, the second MIMO layer is transmitted by another eNB, according to This analogizes.In the another realization for being known as " cooperative beam forming ", eNB is using selected to reduce in adjacent cells The wave beam of interference of UE be transmitted to its associated UE.

CoMP is likely to be present in homogeneous network and/or heterogeneous network.In heterogeneous network, in addition to macro base station node or bee Nest cell（Such as eNB）Except, also use low power base station node or cellular cell（Such as, pico-, femto）With relaying base The mixing stood.In CoMP, low power nodes can be described as remote radio heads（RRH）.Connection between RRH and eNB can be through By chain after chain after X2 or optical fiber, chain is subject to some waiting time and bandwidth restricted problem after X2, and chain provides minimum after optical fiber Waiting time and relatively unrestricted bandwidth.

In heterogeneous network, RRH may or may not have cellular cell ID identical with macro cells.In former In situation, in the case where RRH and macro cells share public ID, macro cells and RRH are formed with centralized scheduling Super cellular cell.In latter, control and data can be serviced by different cellular cells.However, both feelings All there is power control and timing problems in shape.For example, UE may be damaged from the cellular cell of mistake export path in certain situations Consumption.In addition, UE is also possible to export timing information from incorrect source.

Therefore, it is desirable to solve problem described above.

It summarizes

In the one side of the disclosure, method, computer program product and device are provided.The device is small from the first honeycomb Area receives control information, is based in part on the control information generation received from the first cellular cell and goes to the second cellular cell Uplink transmission is transmitted based on the uplink for going to the second cellular cell and receives transmission power setting, and uses the hair Power is penetrated to be transmitted to the second cellular cell in the uplink.

In another aspect of the present disclosure, the device of the first cellular cell and the second cellular cell are about by the second cellular cell Carry out to control information and by the first cellular cell carry out the scope expansion zoning for going to the first cellular cell to data In user equipment（UE）Cooperative multiple spot（CoMP）Transmission is communicated, and is determined and is gone to the first bee about what is carried out by UE The expectation transmitted power level of the uplink transmission of nest cell, and provide to the second cellular cell and passed about the uplink Defeated expectation transmitted power level.

In another aspect of the present disclosure, the device of the first cellular cell and the second cellular cell are about by the first cellular cell Carry out to control information and by the second cellular cell carry out the scope expansion region for going to the second cellular cell to data In user equipment（UE）Cooperative multiple spot（CoMP）Transmission is communicated, and the phase for being used for the UE is received from the second cellular cell It hopes transmitted power level, control information is generated based on the expectation transmitted power level, and transmit the control information to UE.

Brief description

Fig. 1 is the exemplary diagram for explaining the network architecture.

Fig. 2 is the exemplary diagram for explaining access net.

Fig. 3 is the exemplary diagram for explaining the DL frame structure in LTE.

Fig. 4 is the exemplary diagram for explaining the UL frame structure in LTE.

Fig. 5 is the exemplary diagram explained for user plane and the radio protocol architecture for controlling plane.

Fig. 6 is the evolved B node explained in access net（eNB）With the exemplary diagram of user equipment.

Fig. 7 is the diagram for explaining the cellular zoning of scope expansion in heterogeneous network.

Fig. 8 is to explain all cellular cells to use the diagram of the CoMP scene of different ID.

Fig. 9 is the diagram for explaining another CoMP scene that identical ID is shared in all cellular cells.

Figure 10 is the transmission power control for controlling UL transmission power by UE in CoMP scene（TPC）The stream of process Cheng Tu.

Figure 11 is the diagram of the operation of the process of key diagram 10.

Figure 12 is the timing advance for controlling UL TA（TA）The flow chart of process.

Figure 13 is the timing diagram of the operation of the TA process of key diagram 12.

Figure 14 is the flow chart in CoMP scene about the wireless communications method of the operation of UE.

Figure 15 is the flow chart in CoMP scene about the wireless communications method of the operation of RRH.

Figure 16 is the flow chart in CoMP scene about the wireless communications method of the operation of eNB.

Figure 17 is the conceptual number for explaining the data flow between the disparate modules in the example devices that can be UE realization According to flow graph.

Figure 18 be explain for use can be UE realization processing system equipment hard-wired exemplary diagram.

Figure 19 is that explanation can be remote radio heads（RRH）Between disparate modules in the example devices of realization The conceptual data flow figure of data flow.

Figure 20 be explain for use can be RRH realization processing system equipment hard-wired exemplary diagram.

Figure 21 is the conceptual number for explaining the data flow between the disparate modules in the example devices that can be eNB realization According to flow graph.

Figure 22 be explain for use can be eNB realization processing system equipment hard-wired exemplary diagram.

Detailed description

The following detailed description of the drawings is intended as the description of various configurations, and is not intended to indicate to practice herein Described concept only configures.This detailed description includes detail to provide the thorough understanding to each conception of species.However, For those skilled in the art, it will be apparent that, these concepts can be practiced without these specific details.In some instances, with Block diagram format shows well-known structure and component to avoid desalinating this genus.

Several aspects of telecommunication system are provided now with reference to various device and method.These device and method will be following It is described in detailed description and in the accompanying drawings by various frames, module, component, circuit, step, process, algorithm etc.（It is referred to as " element "）To explain.These elements can be used electronic hardware, computer software, or any combination thereof realize.This dvielement is It is implemented as the design constraint that hardware or software depend on concrete application and is added on total system.

As an example, it includes at one or more that any combination of any part or element of element or element is available " processing system " of device is managed to realize.The example of processor includes：Microprocessor, microcontroller, digital signal processor （DSP）, field programmable gate array（FPGA）, programmable logic device（PLD）, state machine, gate control logic, discrete hardware electricity Road and other configurations are at the various functional appropriate hardwares described in the whole text in the execution disclosure.One in processing system Or multiple processors can execute software.Software should be broadly interpreted to mean instruction, instruction set, code, code segment, journey Sequence code, subprogram, software module, application, software application, software package, routine, subroutine, object, executable item, is held program Capable thread, regulation, function etc., no matter its be with software, firmware, middleware, microcode, hardware description language or other Term is all such to address.

Correspondingly, in one or more exemplary embodiments, described function can be implemented in hardware, software, consolidate Part, or any combination thereof in.If be implemented in software, these functions can be stored on computer-readable medium One or more instruction or code on be encoded as on computer-readable medium one or more instruction or code.Computer Readable medium includes computer storage medium.Storage medium can be any available medium that can be accessed by the computer.As showing Example rather than limit, such computer-readable medium may include that RAM, ROM, EEPROM, CD-ROM or other optical disc storages, disk are deposited Storage or other magnetic storage apparatus or the expectation program code and energy quilt that carrying or store instruction or data structure form can be used to Any other medium of computer access.Disk as used herein（disk）And dish（disc）Including compressing dish（CD）, swash Optical disc, optical disc, digital versatile disc（DVD）, floppy disk and blu-ray disc, which disk usually magnetically reproduce data, and dish with laser come Optically reproduce data.Above combination should be also included within the scope of computer readable media.

Fig. 1 is the diagram for explaining LTE network framework 100.LTE network framework 100 can be described as Evolved Packet System（EPS） 100.EPS100 may include one or more user equipments（UE）102, evolved UMTS terrestrial radio access network（E- UTRAN）104, Evolved Packet Core（EPC）110, home subscriber servers（HSS）120 and operator IP service 122.EPS can with other access net interconnection, but for simplification for the sake of, those entity/interfaces do not show that.As shown, EPS Packet-switched services are provided, however, as those skilled in the art artisan will readily appreciate that, each conception of species for being provided in the whole text in the disclosure It can be extended to and the network of circuit switched service is provided.

E-UTRAN includes evolved B node（eNB）106 and other eNB108.ENB106 provides the user towards UE102 Plane and control plane protocol terminations.ENB106 can be via X2 interface（For example, backhaul）It is connected to other eNB108.ENB106 It can be described as base station, base transceiver station, radio base station, wireless set, transceiver function, basic service set（BSS）, extension Services set（ESS）Or some other suitable term.ENB106 provides the access point towards EPC110 for UE102.UE102's Example includes cellular phone, smart phone, Session initiation Protocol（SIP）Phone, laptop devices, personal digital assistant（PDA）, Satelline radio, global positioning system, multimedia equipment, video equipment, digital audio-frequency player（For example, MP3 player）, phase Machine, game console or any other similar function device.UE102 can also be generally referred to by those skilled in the art as movement station, order It is family station, mobile unit, subscriber unit, radio-cell, remote unit, mobile device, wireless device, wireless telecom equipment, long-range Equipment, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand-held set, user agent, mobile client End, client or some other suitable term.

ENB106 is connected to EPC110 by S1 interface.EPC110 includes mobility management entity（MME）112, other MME114, gateway 116 and packet data network（PDN）Gateway 118.MME112 is between processing UE102 and EPC110 Signaling control node.In general, MME112 provides carrying and connection management.All User IP groupings pass through gateway 116 transmit, and gateway 116 is itself coupled to PDN Gateway 118.The offer UE IP address of PDN Gateway 118 is distributed and other Function.PDN Gateway 118 is connected to the IP service 122 of operator.Operator IP service 122 may include internet, Intranet, IP multimedia subsystem（IMS）And PS streaming service（PSS）.

Fig. 2 is the exemplary diagram for explaining the access net 200 in LTE network framework.In this example, 200 quilt of net is accessed It is divided into several cellular zonings（Cellular cell）202.One or more low power level eNB 208 can have small with these honeycombs The cellular zoning 210 that one or more cellular cells in area 210 are folded.Low power level eNB208 can be described as remote radio Head end（RRH）.Low power level eNB208 can be femtocell（For example, household eNB（HeNB））, Pico cell it is small Area or Micro-cell.Macro eNB204 is respectively assigned to corresponding cellular cell 202 and is configured as cellular cell All UE206 in 202 provide the access point to EPC110.In this example of access net 200, without centralized controller, But centralized controller can be used in replaceability configuration.ENB204 is responsible for all functions related with radio, including Radio bearer control, admission control, mobility control, scheduling, safety and the connectivity with gateway 116.Access Net 200 can support broadcast, multicast and unicast services.Broadcast service is the service that can be received by all users, for example, news is wide It broadcasts.Multicast service is can be by one group of received service of user, for example, subscribing to Video service.Unicast services are intended to specific use The service at family, for example, audio call.

Modulation used by access net 200 and Multiple Access scheme can depend on the certain telecommunications standards just disposed and change. In LTE application, on DL using OFDM and on UL using SC-FDMA to support frequency division duplex（FDD）And time division duplex （TDD）The two.As those skilled in the art will easily understand from the following detailed description, each conception of species given herein is good It is suitable for LTE well to apply.However, these concepts can be easily extended to other electricity using other modulation and multiple access technology Beacon is quasi-.As an example, these concepts extend to evolution data optimization（EV-DO）Or Ultra-Mobile Broadband（UMB）.EV-DO It is by third generation partnership project 2 with UMB（3GPP2）The air interface mark of a part as CDMA2000 family of standards of promulgation Standard, and broadband the Internet access is provided to movement station using CDMA.These concepts are extended also to using wideband CDMA（W- CDMA）With other CDMA variants（Such as TD-SCDMA）Universal terrestrial radio access（UTRA）；It is moved using the whole world of TDMA Dynamic communication system（GSM）；And the evolved UTRA using OFDMA（E-UTRA）, Ultra-Mobile Broadband（UMB）,IEEE802.11 （Wi-Fi）,IEEE802.16（WiMAX）, IEEE802.20 and Flash-OFDM.UTRA, E-UTRA, UMTS, LTE and GSM exist It is described in document from 3GPP tissue.CDMA2000 and UMB is described in the document that 3GPP2 is organized.Used reality Border wireless communication standard and multiple access technology will depend on concrete application and be added to the overall design constraints of system.

ENB204 can have the mutiple antennas for supporting MIMO technology.Using for MIMO technology enables eNB 204 to utilize sky Spatial reuse, beam forming and transmitting diversity are supported in domain.Spatial reuse can be used on the same frequency while transmit difference Data flow.These data flows can be transmitted to single UE206 to increase data transfer rate or send multiple UE206 to increase system Total capacity.This is by carrying out spatial pre-coding to each data flow（That is, using the scaling of amplitude and phase）And so Each stream through spatial pre-coding is transmitted on DL by multiple transmitting antennas afterwards to reach.Data flow through spatial pre-coding It is arrived at different spaces signature（It is all）At UE206, these different spatial signatures enable each UE206 to restore to be intended to Go to one or more data flows of the UE206.On UL, each UE206 transmits the data flow through spatial pre-coding, this makes Obtaining eNB204 can be identified for that the source of each data flow through spatial pre-coding.

Spatial reuse is generally used when channel conditions are good.When channel conditions are less advantageous, can be used wave beam at Shape concentrates emitted energy in one or more directions.This can be by carrying out for emitting by mutiple antennas data Spatial pre-coding reach.In order to reach good covering in cell edge, single beam-forming transmission that flows is in combination with hair Penetrate diversity come using.

In the following detailed description, the mimo system referring to the support OFDM on DL is described to the various sides of access net Face.OFDM is the spread spectrum on the several subcarriers modulated data onto OFDM symbol.These subcarriers are with precise frequency It separates.The separation provides " orthogonality " for enabling a receiver to restore data from these subcarriers.It in the time domain, can be to each OFDM symbol adds guard interval（For example, cyclic prefix）It is interfered between OFDM symbol with fighting.UL, which can be used, to be extended through DFT The SC-FDMA of ofdm signal form compensates height power ratio（PAPR）.

Fig. 3 is the exemplary diagram 300 for explaining the DL frame structure in LTE.Frame（10ms）It may be logically divided into 10 equal sizes Subframe.Each subframe may include 2 coherent time slots.Resource grid can be used to indicate 2 time slots, wherein each time slot packet Include resource block.The resource grid is divided into multiple resource elements.In LTE, resource block includes 12 coherent pairs in frequency domain Carrier wave, and for the normal cyclic prefix in each OFDM symbol, comprising 7 coherent OFDM symbols in time domain, or It include 84 resource elements.Such as be designated as R302,304 certain resource elements include DL reference signal（DL-RS）. DL-RS Including the RS different because of cellular cell（CRS）（Otherwise referred to as share RS）The 302 and RS different because of UE（UE-RS）304. UE-RS304 is only in corresponding physical downlink shared channel（PDSCH）It is transmitted on the resource block be mappeding to.By each resource element The bit number of carrying depends on modulation scheme.Therefore, the received resource block of UE is more and modulation scheme is higher, then the number of the UE It is higher according to rate.

Fig. 4 is the exemplary diagram 400 for explaining the UL frame structure in LTE.The available resource block of UL is divided into data Section and control zone.Control zone may be formed at two edges of system bandwidth and can have configurable size.Control Resource block in section processed can be assigned to UE with the transmission for controlling information.Data segments may include all be not included in Resource block in control zone.The UL frame structure causes data segments to include contiguous subcarriers, this allows single UE to be assigned All contiguous subcarriers in data segments.

UE can be assigned resource block 410a, 410b in control zone to transmit control information to eNB.The UE can also quilt Resource block 420a, 420b in data segments are assigned to transmit data to eNB.The UE can obtain the money of appointment in the control zone In physics UL control channel in source block（PUCCH）Middle transmission controls information.The UE can obtain the resource of appointment in the data segments Channel is shared in physics UL on block（PUSCH）In only transmit data or transmission both data and control information.UL transmission can be across The two time slots of subframe and can cross frequency hopping.

Resource block collection can be used in Physical Random Access Channel（PRACH）Initial system is executed in 430 to access and reach UL is synchronous.PRACH430 carries random sequence and cannot carry any UL data/signaling.Each random access preamble occupies Bandwidth corresponding with 6 coherent resource blocks.Initial frequency is specified by network.That is, the transmission of random access preamble is limited In specific running time-frequency resource.Frequency hopping is not present for PRACH.PRACH trial is carried at single subframe（1ms）In or comprising In several sequences for adjoining subframe, and the every frame of UE（10ms）Single PRACH trial can only be made.

Fig. 5 is the exemplary diagram 500 explained in LTE for user plane and the radio protocol architecture for controlling plane. Radio protocol architecture for UE and eNB is shown to have three layers：Layer 1, layer 2 and layer 3.Layer 1（L1 layers）It is lowermost layer and real Existing various physical layer signal processing functions.Layer 1 will be referred to herein as physical layer 506.Layer 2（L2 layers）508 in physical layer 506 Link between top and responsible UE and eNB on physical layer 506.

In user plane, L2 layer 508 includes media access control（MAC）Sublayer 510, radio link control（RLC） Sublayer 512 and Packet Data Convergence Protocol（PDCP）514 sublayers, they are terminated at eNB on network side.Although not showing Out, but UE is on L2 layer 508 can have several upper layers, the network layer including terminating in PDN Gateway 108 in network side （For example, IP layers）And terminate in the other end of connection（For example, distal end UE, server etc.）The application layer at place.

PDCP sublayer 514 provides the multiplexing between different radio carrying and logic channel.PDCP sublayer 514 also provides To the header suppression of upper layer data packet to reduce wireless radio transmission expense, safety is provided by encrypting data grouping Property, and the switching support to UE between each eNB is provided.Rlc sublayer 512 is provided to the segmentation of upper layer data packet and again It fills, to the re-transmission of lost data packet and reordering to compensate due to mixed automatic repeat request to data grouping （HARQ）Caused by received out-of-order.MAC sublayer 510 provides the multiplexing between logic channel and transmission channel.Media access control sublayer 510 is also It is responsible for the various radio resources distributed in a cellular cell between each UE（For example, resource block）.Media access control sublayer 510 is also negative Blame HARQ operation.

In the control plane, for the radio protocol architecture of UE and eNB for physical layer 506 and L2 layer 508 base This is identical, and difference is only that for controlling plane do not have header suppression function.Controlling plane further includes layer 3（L3 layers）In nothing The control of line electric resources（RRC）Sublayer 516.RRC sublayer 516 is responsible for obtaining radio resource（That is, radio bearer）And it uses RRC signaling between eNB and UE configures each lower layer.

Fig. 6 be in access net eNB610 and UE650 in the block diagram communicated.In DL, the upper-layer packet from core net It is provided to controller/processor 675.Controller/processor 675 realizes L2 layers of functionality.In DL, controller/processing Device 675 provides header suppression, encryption, packet segmentation and reorders, the multiplexing between logic channel and transmission channel, Yi Jiji Carry out the radio resources allocation carried out to UE650 in various priority metrics.Controller/processor 675 is also responsible for HARQ behaviour Work, the re-transmission of lost packets and the signaling to UE650.

TX（Transmitting）Processor 616 realizes L1 layers（That is, physical layer）Various signal processing functions.These signal processing function It can include coding and intertexture to facilitate the forward error correction at UE650（FEC）And it is based on various modulation schemes（For example, binary system Phase-shift keying (PSK)（BPSK）, quadrature phase shift keying（QPSK）, M phase-shift keying (PSK)（M-PSK）, M quadrature amplitude modulation（M-QAM））Xiang Xin The mapping that number constellation carries out.Then, encoded and modulation symbol is split into parallel stream.Each stream is subsequently mapped into OFDM Subcarrier, in the time and/or frequency domain with reference signal（For example, pilot tone）It is multiplexed and then uses fast Fourier transforma It changes（IFFT）It is grouped together to generate the physical channel for carrying time-domain OFDM symbols stream.The OFDM miscarriage by spatial pre-coding with Raw multiple spatial flows.The channel estimation for carrying out channel estimator 674 can be used to determine coding and modulation scheme and for sky Between handle.The channel estimation can be derived from reference signal and/or the channel conditions feedback transmitted by UE650.Each sky Between flow and be then provided to a different antenna 620 via individual transmitter 618TX.Each transmitter 618TX is with respective Spatial flow come modulate RF carrier wave for transmission.

At UE650, each receiver 654RX receives signal by its respective antenna 652.Each receiver 654RX recovers the information being modulated in RF carrier wave and provides this information to receiver（RX）Processor 656.RX processor 656 realize L1 layers of various signal processing functions.RX processor 656 executes spatial manipulation to the information to recover with UE650 For any spatial flow of destination.If there is multiple spatial flows are using the UE650 as destination, then they can be by RX processor 656 are combined into single OFDM symbol stream.RX processor 656 then uses Fast Fourier Transform (FFT)（FFT）By the OFDM symbol Stream transforms from the time domain to frequency domain.The frequency-region signal includes individual OFDM symbol stream to each subcarrier of the ofdm signal.It is logical Cross the symbol determined most possibly restored by signal constellation point that eNB610 is transferred and demodulated on each subcarrier, Yi Jican Examine signal.These soft-decisions can be based on by the calculated channel estimation of channel estimator 658.These soft-decisions are then solved Code and deinterleaving are to recover the original data transmitted on the physical channel by eNB 610 and control signal.These data and control Signal processed is subsequently provided to controller/processor 659.

Controller/processor 659 realizes L2 layers.Controller/processor can be with the storage of storage program code and data Device 660 is associated.Memory 660 can be described as computer-readable medium.In UL, control/processor 659 provide transmission channel with Point use, grouping refitting, private mark deciphering, head decompression, control signal processing between logic channel is to recover from core The upper-layer packet of net.These upper-layer packets are subsequently provided to data trap 662, and the latter represents L2 layers or more of all protocol layers. Various control signals are provided to data trap 662 also to carry out L3 processing.Controller/processor 659 is also responsible for using acknowledgement （ACK）And/or negative acknowledgement（NACK）Agreement carries out error detection to support HARQ operation.

In UL, data source 667 is used to for upper-layer packet to be supplied to controller/processor 659.Data source 667 represents L2 layers（L2）Above all protocol layers.Described function, control are transmitted by the DL that eNB610 is carried out similar to combining Device/processor 659 is by providing header suppression, encryption, packet segmentation and reordering and based on the nothing carried out by eNB610 Line electric resources distribute the multiplexing carried out between logic channel and transmission channel, to realize user plane and control the L2 of plane Layer.Controller/processor 659 is also responsible for HARQ operation, the re-transmission of lost packets and the signaling to eNB610.

The channel estimation derived from the reference signal or feedback transmitted by eNB610 by channel estimator 658 can be by TX processor 668 is used to select appropriate coding and modulation scheme and facilitates spatial manipulation.It is generated by TX processor 668 all Spatial flow is supplied to different antennas 652 via transmitter 654TX respectively.The respective spatial flow of each transmitter 654TX To modulate RF carrier wave for transmission.

At the eNB610 by in conjunction with described in the receiver function at UE650 in a manner of similar mode handle UL Transmission.Each receiver 618RX receives signal by its respective antenna 620.Each receiver 618RX, which is recovered, to be modulated to Information in RF carrier wave simultaneously provides this information to RX processor 670.RX processor 670 can realize L1 layers.

Controller/processor 675 realizes L2 layers.Controller/processor 675 can be deposited with storage program code and data Reservoir 676 is associated.Memory 676 can be described as computer-readable medium.In UL, control/processor 675 provides transmission channel Point use, packet recombining, private mark deciphering, head decompression, control signal processing between logic channel is to recover certainly The upper-layer packet of UE650.Upper-layer packet from controller/processor 675 is provided to core net.Controller/processor 675 are also responsible for carrying out error detection using ACK and/or NACK agreement to support HARQ operation.

Fig. 7 is the diagram 700 for explaining the scope expansion cellular zoning in the heterogeneous network for supporting UE720, the heterogeneous network Including macro eNB（Such as eNB710a）With low power level eNB（Such as RRH710b）.A kind of mode that reaching scope expansion is logical It crosses based on path loss（Its with the eNB that is lost with minimal path rather than the eNB phase with maximum downlink signal strength Association）With macro base station and femto base station（Respectively eNB710a and RRH710b）Between fixed resource divide execute eNB with The relevance of UE.RRH 710b can have the cellular zoning 704 of scope expansion, and the cellular zoning 704 of the scope expansion is to pass through Enhanced cellular Inter-Cell Interference Coordination between RRH 710b and macro eNB710a and disappeared by interference performed by UE720 It goes from the expansion of cellular zoning 702.In enhanced cellular Inter-Cell Interference Coordination, RRH 710b is received from macro eNB710a Information related with the disturbance regime of UE720.The information allow RRH 710b be in the cellular zoning 704 of scope expansion UE720 service, and RRH710b is allowed to receive UE720 when UE 720 enters the cellular zoning 704 of scope expansion from macro The switching of eNB710a.

In the heterogeneous network with scope expansion, in order to make UE in the presence of macro with stronger downlink signal strength It is serviced in the case where eNB from RRF, RRH needs and dominates macro interference source execution control channel and data channel interference coordination The two and UE need support senior receiver to carry out interference cancellation.

Inter-cell interference coordination（ICID）It is crucial for heterogeneous network deployment.Basic ICIC technology is related to interfering Resource coordination between base station, wherein interference base station abandons the control to UE that disturbed influence is realized using some resources It is transmitted with data.More generally, interference base station energy transmission power coordinated with each other and/or spatial beams are corresponding to it to realize The control of UE and data transmission.

Fig. 8 is illustrated about by eNB810a and multiple RRH1810b-1 to RRH4810b-4（Respectively there is different honeycombs Cell ID）The isomery CoMP scene 800 of the overlay area 890 of support.Each of RRH1 810b-1 to RRH4810b-4 packet Include corresponding cellular zoning 802-1 to 802-4.Each of RRH1 810b-1 to RRH4810b-4 further includes corresponding model Expansion cellular zoning 804-1 to 804-4 is enclosed, scope expansion cellular zoning 804-1 to 804-4 is arrived by RRH1810b-1 Enhanced cellular Inter-Cell Interference Coordination between RRH4810b-4 and macro eNB810a and the interference by being executed by UE820 It eliminates and to expand from corresponding cellular zoning 802-1 to 802-4.In this scene, cellular cell split gain can pass through by Different users is dispatched to different RRH to reach.

Fig. 9 is illustrated about the overlay area 990 by eNB910a and multiple RRH1910b-1 to RRH4910b-4 support Another isomery CoMP scene 900, wherein all cellular cells ID having the same.Similar to the CoMP scene explained in Fig. 8, Each of RRH1910b-1 to RRH4910 b-4 includes corresponding cellular zoning 902-1 to 902-4.RRH1910b-1 is arrived Each of RRH4910b-4 further includes corresponding scope expansion cellular zoning 904-1 to 904-4, the scope expansion cell It is dry by the enhanced cellular minizone between RRH1910b-1 to RRH4910b-4 and macro eNB910a to draw 904-1 to 904-4 Coordination and the interference cancellation by being executed by UE920 are disturbed to expand from corresponding cellular zoning 902-1 to 902-4.At this In scene, common reference signal is received from all transfer points in coordination region（CRS）With control signal.Specifically, UE920 from All transfer points（ENB910a and RRH1910b-1 to RRH4910b-4）It receives control and receives data from RRH1910b-1.

In order to reduce any unnecessary power for the UL transmission for being used to go to eNB by UE, transmission power control can be used To adjust transmitted power level used in UE.The adjustment of transmitted power level about UL is generally based on the parameter detected （Such as, it is assumed that UE DL path loss experienced will be indicated as transmitting necessary quantity of power in UL, comes from The DL path loss of the transmission of eNB）.However, in the situation of the CoMP scene 800 for not interfering with cancellation explained in such as Fig. 8, UE820 will export DL path loss from the source of mistake.DL information on path loss is used to be arranged the transmission power that UL is transmitted by UE. In this case, even if the DL path loss from RRH1810b-1 to UE820 is more representative of the situation between them, UE also will Its transmission power is set based on the path loss from eNB810a.As commentary, although with UE820 distance eNB810a phase Physically closer to RRH1810b-1 and it may require the low UL transmission power from UE820 than UE820, but UE820 will Improperly use the path loss from eNB810a.This will lead to UE820 and transmits UL simultaneously to be higher than necessary transmission power And it may cause interference to other nodes.Incorrect DL information on path loss may cause the open loop power control of inaccuracy System.Need to solve such open loop power correction error to operate with efficient UL.Identical problem is for having interference to disappear Going for the UE of ability can be to avoid because they can be communicated with RRH.On the other hand, similar problem be likely to be present in as In the situation of the CoMP scene 900 explained in Fig. 9, wherein UE920 by from mistake source（For example, from eNB910a and RRH1 In the combination of 910b-1 to RRH4910b-4, and non-individual is from RRH1910b-1）Export DL path loss.

Figure 10 is illustrated for physical uplink shared channel（PUSCH）UL power control process 1000, wherein closing Ring TPC can be used for compensating incorrect DL information on path loss.Also refer to Figure 11（It, which is illustrated, is representing the one of Fig. 8 and 9 RRH11110b-1, eNB1110a and UE1120 in the configuration 1100 of partial details）, determined in 1002, RRH11110b-1 Expectation UL transmitted power level and associated expectation TPC information about UE1120.ENB1110a controls overlay area 1190。

Expectation TPC information is forwarded to eNB1110a in backhaul communication 1162 in 1004, RRH11110b-1.In compensation On the one hand, the expectation TPC information transmitting between RRH11110b-1 and eNB1110a is occurred with zero-lag or extremely low delay, and And it centralized processing that can be used will be transmitted to the TPC of UE 1120 to be arranged.For example, in CoMP scene 900, wherein owning Point（That is, eNB910a and RRH1 910b-1 to RRH4910b-4）Control information is transmitted to UE920, it will be in a node（Such as eNB910a）The collection about the TPC that will be transmitted to UE920 is made based on from the received expectation TPC information of RRH910b-1 in place Chinese style determines.The TPC will then be communicated to all other point（For example, RRH1910b-1 to RRH4910b-4）For together with ENB1110a transmission sends UE920 to together.

In 1006, TPC UE1120 will be transmitted in control transmission 1176.For CoMP scene 800, eNB810a will It is transmitted to UE820.For CoMP scene 900, all the points（That is, eNB 910a and RRH1910b-1 to RRH4910b-4）It will TPC is transmitted to UE920, so that UE920 can transmit UL PUSCH by power level that the TPC is arranged（Such as UL PUSCH1182）.

With continued reference to Figure 11, the closed loop TPC method of collaboration disabling open Loop Power control can be used for mitigating to be transmitted about UL Power Control Problem.This can be applied to PUSCH, physical uplink control channel（PUCCH）And other UL signals（Example Such as, probing reference signal etc.）.For UL PUSCH transmission, it is possible that open Loop Power control is disabled using existing standard. However, not for disabling the standard method of the open Loop Power control for PUCCH.In the power control for being directed to UL PUCCH One side, can be used and new disable open loop for disabling the parameter different because of UE for the open Loop Power control of PUCCH Power control.The parameter can be arranged based on RF characteristic and scope expansion state and depending on the position of UE.

Similar to UE utilize from mistake source information on path loss the problem of, explained in such as Fig. 8 without do It disturbs in the situation of CoMP scene 800 of cancellation, or in the situation of CoMP scene 900 as shown in Figure 9 in the commentary, UE will be from The source of mistake（For example, from eNB rather than RRH）Export DL timing.The problem can be with for the UE with interference cancellation ability It avoids, because they can be communicated with RRH.

Timing advance（TA）Order can be used for compensating any required timing slip.Referring to Fig.1 2, it is that TA was determined The flow chart of journey 1200, and referring again to Figure 11, the expectation UL timing about UE1120 is determined in 1202, RRH1110b-1 It deviates and is transmitted in one or more TA orders 1172.

Figure 13 is to explain the offset RRH system time line 1320 relative to absolute LTE system timeline 1310 so as to maximum Change the timing diagram 1300 for receiving the alignment between signal for being directed to the first and second UE.Reference offset RRH system time line 1320, Fast Fourier Transform（FFT）Window offset can be introduced in RRH.Meanwhile referring to absolute LTE system timeline 1310, do not mention For being directed to the FFT window offset of eNB.

Referring now still to Figure 12, expectation TA letter is forwarded to eNB1110a in backhaul communication 1162 in 1204, RRH11110b-1 Breath.In the one side of compensation, the transmitting of expectation TA information between RRH11110b-1 and eNB1110a is with zero-lag or extremely low Delay occurs, and centralized processing that can be used will be transmitted to the TA of UE1120 to be arranged.For example, in the CoMP scene of Fig. 9 In 900, wherein all the points（That is, eNB910a and RRH1910b-1 to RRH4910b-4）Control information is transmitted to UE920, it will be One node（Such as eNB910a）It makes based on from the received expectation TPC information of RRH910b-1 about will be transmitted at place The centralization of the TA of UE920 determines.The TA will then be communicated to all other point（For example, RRH1910b-1 to RRH4910b- 4）For sending UE 920 to together with eNB1110a.

In 1206, TA UE1120 will be transmitted in control transmission 1176.For the CoMP scene 800 of Fig. 8, ENB810a will transmit TA to UE820 and control information.For the CoMP scene 900 of Fig. 9, all the points（That is, eNB910a and RRH1910b-1 to RRH4910b-4）TA will be transmitted to UE920 and control information, so that UE920 can be determined based on the TA order Hour offset transmits UL signal.

Figure 14 is the flow chart 1400 of the wireless communications method of the various aspects based on power control disclosed herein.The party Method can be executed by UE.In step 1402, UE is from the first cellular cell（Such as eNB）Receive control information.In step 1404, UE It is based in part on the control information received from the first cellular cell and goes to the second cellular cell to generate（Such as RRH）Uplink Link transmission.For example, UE can be by measuring the downlink path-loss of the reference signal from the first cellular cell and being based on The transmission power next life that the downlink path-loss measured setting is transmitted about the uplink for going to the second cellular cell It is transmitted at uplink.Here, the downlink path-loss measured can be designated as necessary to transmitting in the uplink Quantity of power.UE further can receive transmission power control from the first cellular cell（TPC）Information is for adjusting transmission power.? In another example, UE can be determined downlink timing and is based on by using the control information received from the first cellular cell Identified downlink time set comes about the uplink timing that uplink is communicated to the second cellular cell Generate uplink transmission.Here, identified downlink timing can be designated as necessary to transmitting in the uplink Periodically.UE further can receive timing-advance information for adjusting uplink timing from the first cellular cell.

In step 1406, UE can transmit to receive transmission power setting based on the uplink for going to the second cellular cell. In step 1408, the transmission power received can be used to be transmitted in the uplink to the second cellular cell for UE.

Figure 15 is the flow chart 1500 of the wireless communications method of the various aspects based on power control disclosed herein.The party Method can be by the first cellular cell（Such as RRH）To execute.In step 1502, the first cellular cell and the second cellular cell（Such as eNB）About by the second cellular cell carry out to control information and by the first cellular cell carry out first is gone to data The CoMP transmission of UE in the scope expansion zoning of cellular cell is communicated.In step 1504, the first cellular cell, which determines, is closed In the expectation transmitted power level of the uplink transmission for going to the first cellular cell carried out by UE.For example, the first honeycomb is small Area can lead to the transmitted power level of the interference to other nodes by determining UE based on the degree of approach of itself and UE and send out expectation It penetrates power level and is set as the highest possible transmitted power level that will not be caused interference with to determine the expectation transmitting about UE transmission Power level.In step 1506, the first cellular cell provides the expectation transmitting transmitted about uplink to the second cellular cell Power level.

Figure 16 is the flow chart 1600 of the wireless communications method of the various aspects based on power control disclosed herein.The party Method can be by the first cellular cell（Such as eNB）To execute.In step 1602, the first cellular cell and the second cellular cell（Such as RRH）About by the first cellular cell carry out to control information and by the second cellular cell carry out second is gone to data The CoMP transmission of UE in the scope expansion zoning of cellular cell is communicated.In step 1604, the first cellular cell is from second Cellular cell receives the expectation transmitted power level about UE.In step 1606, the first cellular cell is based on the expectation and emits function Rate level generates control information.For example, the first cellular cell receives the transmission power control with UE from the second cellular cell （TPC）Associated information, and control information is generated to allow UE to adjust uplink based on information associated with the TPC of the UE Link transmission power.In step 1608, the control information is transmitted to UE in the first cellular cell.

Figure 17 is the conceptual diagram 1700 of the data flow between the disparate modules explained in example devices 100.Equipment 100 include the module 1702 of control information 1710 being received from the first cellular cell, and be based in part on from the first cellular cell The control information received come generate go to the second cellular cell uplink transmission module 1704.For example, module 1704 It can be by determining the downlink path-loss of the reference signal from the first cellular cell and based on identified downlink Path loss setting generates uplink transmission about the transmission power that the uplink for going to the second cellular cell is transmitted.This In, identified downlink path-loss can be designated as transmitting necessary quantity of power in the uplink.Module 1704 The transmission power control received from the first cellular cell can be further used（TPC）Information adjusts transmission power.Another In example, module 1704 can determine downlink timing and base by using the control information received from the first cellular cell In identified downlink time set about the uplink timing that uplink is communicated to the second cellular cell To generate uplink transmission.Here, the timing of identified downlink can be designated as transmitting institute in the uplink required Timing.It is fixed to adjust uplink that module 1704 can further use the timing-advance information received from the first cellular cell When.

Module 1702 may be additionally configured to transmit based on the uplink for going to the second cellular cell to receive transmission power Setting.The transmission power can be used to be transmitted in the uplink to the second cellular cell for module 1704.Transmission mould can be used Block 1708 transmit and receiving module 1706 can be used to be received.Although not describing about the figure, data can be such as It receives and transmits as those skilled in the art will appreciate that.

The equipment may include the add-on module of each step of the algorithm in the flow chart executed in earlier figures 14.Therefore, Each step in flow chart in earlier figures 14 can be executed by a module and the equipment may include one in these modules or Multiple modules.Each module can be concrete configuration at implement one or more hardware components of the process/algorithm, by being configured to Execute the process/algorithm processor realize, it is being stored in the computer-readable medium for being realized by processor or Its certain combination.

Figure 18 is the hard-wired exemplary diagram for explaining the equipment 100 ' using processing system 1814.The equipment includes It is coupled to the processing system 1814 of transceiver 1810.Transceiver 1810 is coupled to one or more antennas 1820.Transceiver 1810 Provide a mean for the means that transmission medium is communicated with various other devices.Processing system 1814 is computer-readable including being coupled to The processor 1804 of medium 1806.Processor 1804 is responsible for general processing, including executes and be stored in computer-readable medium Software on 1806.The software executes processing system 1814 above with respect to any specific device The various functions of description.Computer-readable medium 1806, which may be additionally used for storing, to be manipulated by processor 1804 when executing software Data.Processing system further comprises control information receiving module 1832, is used for from the first cellular cell（Such as eNB）Receive control Information processed；Uplink transmits generation module 1834, for being based in part on the control information received from the first cellular cell The second cellular cell is gone to generate（Such as RRH）Uplink transmission；Transmitted power level receiving module 1836 is used for base It is transmitted in the uplink for going to the second cellular cell to receive transmission power setting；And uplink transmission 1838, it is used for It is transmitted in the uplink to the second cellular cell using the transmission power.Each module can be transports in processor 1804 Capable software module, the software module be resident/being stored in computer-readable medium 1806, be coupled to processor 1804 one Or multiple hardware modules or its certain combination.Processing system 1814 can be the component of UE650 and may include memory 660 and/ Or at least one of TX processor 668, RX processor 656 and controller/processor 659.

It in one configuration, include being controlled for being received from the first cellular cell for the equipment 100/100 ' of wireless communication The device of information；The second honeycomb is gone to for being based at least partially on the control information received from the first cellular cell to generate The device of the uplink transmission of cell；Transmission power is received for transmitting based on the uplink for going to the second cellular cell The device of setting；And the device for being transmitted in the uplink to the second cellular cell using the transmission power.Before It states device and can be and be configured to execute the function as described in aforementioned device in the aforementioned modules and/or equipment 100 ' of equipment 100 One or more of processing system 1814.As it was noted above, processing system 1814 may include TX processor 668, RX processor 656 and controller/processor 659.As a result, in one configuration, aforementioned device can be arranged to execute by aforementioned device TX processor 668, RX processor 656 and the controller/processor 659 for the function of being addressed.

Figure 19 is explained for the first cellular cell（Such as RRH）Example devices 100 in disparate modules between Data flow conceptual diagram 1900.Equipment 100 includes and the second cellular cell（Such as eNB）About small by the second honeycomb Area carry out to control information and by the first cellular cell carry out the scope expansion area for going to the first cellular cell to data The module 1902 that the CoMP transmission of UE in drawing is communicated, and determine and go to the first cellular cell about what is carried out by UE Uplink transmission expectation transmitted power level module 1904.For example, module 1904 can be based on equipment 100 ' and UE's The degree of approach leads to the transmitted power level of the interference to other nodes by determining UE and sets desired transmitted power level to The highest possible transmitted power level that will not be caused interference with determine about UE transmission expectation transmitted power level.

Module 1908 provides the expectation transmitted power level 1912 transmitted about uplink to the second cellular cell.It can Other transmission are carried out using transmission module 1908, and carry out such signal using receiving module 1906（Such as UE communication 1910） Reception.Although not describing about the figure, data can be received and be passed as one of ordinary skill will appreciate It send.

The equipment may include the add-on module of each step of the algorithm in the flow chart for execute earlier figures 15.Before as a result, State that each step in the flow chart of Figure 15 can be executed by a module and the equipment may include one or more of these modules Module.Each module can be concrete configuration at implement one or more hardware components of the process/algorithm, by being configured to execute It is that the processor of the process/algorithm is realized, being stored in the computer-readable medium for being realized by processor or its certain A combination.

Figure 20 is the hard-wired exemplary diagram for explaining the equipment 100 ' using processing system 2014.The equipment includes It is coupled to the processing system 2014 of transceiver 2010.Transceiver 2010 is coupled to one or more antennas 2020.Transceiver 2010 Provide a mean for the means that transmission medium is communicated with various other devices.Processing system 2014 is computer-readable including being coupled to The processor 2004 of medium 2006.Processor 2004 is responsible for general processing, including executes and be stored in computer-readable medium Software on 2006.The software executes processing system 2014 above with respect to any specific device The various functions of description.Computer-readable medium 2006, which may be additionally used for storing, to be manipulated by processor 2004 when executing software Data.Processing system further comprises CoMP module 2032, is used for and the second cellular cell（Such as eNB）About by the second bee What nest cell carried out expands the range for going to the first cellular cell of data to control information and by what the first cellular cell carried out The CoMP transmission for opening the UE in zoning is communicated；Transmission power determining module 2034 is gone for determining about what is carried out by UE The expectation transmitted power level that uplink toward the first cellular cell is transmitted；And expectation transmitted power level notification module 2036, for providing the expectation transmitted power level transmitted about the uplink to the second cellular cell.Each module can be The software module that is run in processor 2004, the software module be resident/being stored in computer-readable medium 2006, coupling To one or more hardware modules of processor 2004 or its certain combination.Processing system 2014 can be the component of eNB610 It and may include at least one of memory 676 and/or TX processor 616, RX processor 670 and controller/processor 675.

It in one configuration, is the first cellular cell for the equipment 100/100 ' of wireless communication（Such as RRH）, packet Include for the second cellular cell（Such as eNB）About by the second cellular cell carry out to control information and by the first honeycomb it is small The user equipment in the scope expansion zoning for going to the first cellular cell to data that area carries out（UE）CoMP transmission carry out The device of communication；For determining that the expectation about the uplink transmission for going to the first cellular cell carried out by UE emits function The device of rate level；And for providing the expectation transmitted power level transmitted about the uplink to the second cellular cell Device.Aforementioned device can be to be configured to execute as described in aforementioned device in the aforementioned modules and/or equipment 100 ' of equipment 100 One or more of processing system 2014 of function.As it was noted above, processing system 2014 may include TX processor 616, RX Processor 670 and controller/processor 675.As a result, in one configuration, aforementioned device can be arranged to execute by preceding State the TX processor 616, RX processor 670 and controller/processor 675 of the function that device is addressed.

Figure 21 is to explain example devices 100（Such as the first cellular cell of eNB）In disparate modules between The conceptual diagram 2100 of data flow.Equipment 100 includes and the second cellular cell（Such as RRH）About by the first cellular cell Carry out to control information and by the second cellular cell carry out the scope expansion zoning for going to the second cellular cell to data In UE the module 2102 that is communicated of CoMP transmission, receive the expectation transmission power electricity about UE from the second cellular cell Flat 2110 module 2106, and the module 2104 for controlling information is generated based on the expectation transmitted power level.For example, working as mould Block 2106 receives the transmission power control with UE from the second cellular cell（TPC）When associated information, module 2104 can base Information is controlled to allow UE to adjust up-link transmission power in information associated with the TPC of the UE to generate.

Transmission module 2108 can be used to carry out signal（Such as control information 2112）It transmits and receiving module can be used 2106 are received.Although not describing about the figure, data can connect as one of ordinary skill will appreciate It receives and transmits.

The equipment may include the add-on module of each step of the algorithm in the flow chart for execute earlier figures 16.Before as a result, State that each step in the flow chart of Figure 16 can be executed by a module and the equipment may include one or more of these modules Module.Each module can be concrete configuration at implement one or more hardware components of the process/algorithm, by being configured to execute It is that the processor of the process/algorithm is realized, being stored in the computer-readable medium for being realized by processor or its certain A combination.

Figure 22 is the hard-wired exemplary diagram for explaining the equipment 100 ' using processing system 2214.The equipment includes It is coupled to the processing system 2214 of transceiver 2210.Transceiver 2210 is coupled to one or more antennas 2220.Transceiver 2210 Provide a mean for the means that transmission medium is communicated with various other devices.Processing system 2214 is computer-readable including being coupled to The processor 2204 of medium 2206.Processor 2204 is responsible for general processing, including executes and be stored in computer-readable medium Software on 2206.The software executes processing system 2214 above with respect to any specific device The various functions of description.Computer-readable medium 2206, which may be additionally used for storing, to be manipulated by processor 2204 when executing software Data.Processing system further comprise for the second cellular cell about by the first cellular cell carry out to control information and By the second cellular cell carry out the scope expansion zoning for going to the second cellular cell to data in UE CoMP transmission into The module 2232 of row communication receives the module 2234 of the expectation transmitted power level about UE from the second cellular cell, and being based on should It is expected that transmitted power level generates the module 2236 of control information, and the module for transmitting the control information to UE 2208.Each module can be the software module run in processor 2204, be resident/be stored in computer-readable medium 2206 Software module, be coupled to the one or more hardware modules or its certain combination of processor 2204.Processing system 2214 can To be the component of eNB610 and may include memory 676 and/or TX processor 616, RX processor 670 and controller/processing At least one of device 675.

In one configuration, for the equipment 100/100 ' of wireless communication（The first cellular cell of such as eNB）Including with In with the second cellular cell（Such as RRH）About by the first cellular cell carry out to control information and by the second cellular cell into The CoMP transmission of UE in the capable scope expansion zoning for going to the second cellular cell to data communicates；From the second bee Nest cell receives the expectation transmitted power level about the UE；Control information is generated based on the expectation transmitted power level；With And the device of the control information is transmitted to UE.Aforementioned device can be configuration in the aforementioned modules and/or equipment 100 ' of equipment 100 At one or more of the processing system 2214 for executing the function as described in aforementioned device.As it was noted above, processing system 2214 may include TX processor 616, RX processor 670 and controller/processor 675.As a result, in one configuration, aforementioned Device can be arranged to execute the TX processor 616 for the function of being addressed by aforementioned device, RX processor 670 and control Device/processor 675.

It should be understood that although power control information be used to describe to send to each side of the control information of UE herein Face, but timing advance or adjustment information can also be used to control in the control information realize various methods described herein UE, Other nodes of RRH or network.

It should be understood that the specific order or hierarchy of each step are the explanations of exemplary way in the disclosed process.Ying Li Solution is based on design preference, can rearrange the specific order or hierarchy of each step during these.In addition, some steps can It is combined or is ignored.The element of various steps is presented in appended claim to a method in sample order, and is not meant to be limited Due to the concrete order or position rank presented.

Description before offer be can practice to make any technical staff in this field it is described herein Various aspects.Various changes in terms of these will be easy to be understood by those skilled, and defined herein Generic principles can be applied to other aspect.Therefore, claim is not intended to be limited to aspect shown in this paper, But the full scope consistent with linguistic claim should be awarded, wherein citation to the singular of element unless Otherwise special declaration is not intended to indicate " one and only one ", but " one or more ".Unless specifically stated otherwise, no Then term " some/some " refers to one or more.The element of various aspects described throughout this disclosure is that this field is common Technical staff is currently or hereafter clearly included in this with equivalent scheme functionally by reference in known all structures, and It is intended to be covered by the claims.In addition, no matter so any content disclosed herein is all not intended to contribute to the public, Disclosure whether be explicitly recited in detail in the claims.There is no any claim element that should be interpreted that device adds function Can, unless the element is clearly described using word " device being used for ... ".

Claims (21)

1. a kind of wireless communications method of first cellular cell, including：

It is disabled out based on the scope expansion state of the user equipment (UE) in the scope expansion zoning of first cellular cell Ring power control, wherein the scope expansion area of the UE described in the scope expansion state instruction about first cellular cell The position drawn；

The cooperative multiple spot (CoMP) of control information is passed about what is carried out by second cellular cell with the second cellular cell In the defeated and scope expansion zoning for going to first cellular cell to data by first cellular cell progress The CoMP transmission of the UE communicated；

It is determined by first cellular cell and is passed about the uplink for going to first cellular cell carried out by the UE Defeated expectation transmitted power level；And

The expectation transmitted power level transmitted about the uplink is provided to second cellular cell.

2. the method as described in claim 1, which is characterized in that providing the expectation transmitted power level includes to described second Cellular cell provides transmission power control (TPC) information, and the TPC information is used to that the uplink transmission to be arranged for the UE Transmission power.

3. the method as described in claim 1, which is characterized in that further comprise being based in part on by second cellular cell What is carried out carrys out the CoMP transmission of control information to receive uplink transmission from the UE.

4. the method as described in claim 1, which is characterized in that it further comprise transmitting the control information to the UE, Described in the first cellular cell and the second cellular cell cell identification symbol having the same.

5. the method as described in claim 1, which is characterized in that first cellular cell is the evolved B node of low-power (eNB) second cellular cell is high power eNB.

6. the method as described in claim 1, which is characterized in that further comprise based on the uplink received from the UE Transmission conveys timing-advance information to second cellular cell, and the timing-advance information is used for for described in UE adjustment The uplink timing of uplink transmission.

7. method as claimed in claim 6, which is characterized in that further comprise：

The transmission of the second uplink is received from the 2nd UE；And

The system time line of second cellular cell is adjusted to improve the uplink transmission from the UE and to come from institute State the alignment between the second uplink transmission of the 2nd UE.

8. a kind of equipment of the wireless communication for the first cellular cell, including：

For being prohibited based on the scope expansion state of the user equipment (UE) in the scope expansion zoning of first cellular cell With the device of open Loop Power control, wherein UE described in the scope expansion state instruction is described in first cellular cell The position of scope expansion zoning；

For with the second cellular cell about by second cellular cell carry out to control information cooperative multiple spot (CoMP) transmission and the range expansion for going to first cellular cell to data carried out by first cellular cell The device for opening the CoMP transmission of the UE in zoning to be communicated；

For determining that the expectation about the uplink transmission for going to first cellular cell carried out by the UE emits function The device of rate level；And

For providing the dress of the expectation transmitted power level transmitted about the uplink to second cellular cell It sets.

9. equipment as claimed in claim 8, which is characterized in that the expectation transmitted power level includes transmission power control (TPC) information, the TPC information are used to be arranged for the UE transmission power of the uplink transmission.

10. equipment as claimed in claim 8, which is characterized in that further comprise for being based in part on by second bee What nest cell carried out to receive the device that uplink is transmitted from the UE to the CoMP transmission of control information.

11. equipment as claimed in claim 8, which is characterized in that further comprise for transmitting the control letter to the UE The device of breath, wherein first cellular cell and the second cellular cell cell identification symbol having the same.

12. equipment as claimed in claim 8, which is characterized in that first cellular cell is the evolved B node of low-power (eNB) second cellular cell is high power eNB.

13. equipment as claimed in claim 8, which is characterized in that further comprise for based on being received from the UE Uplink transmission conveys the device of timing-advance information to second cellular cell, and the timing-advance information is used for for institute State the uplink timing that UE adjusts the uplink transmission.

14. equipment as claimed in claim 13, which is characterized in that further comprise：

For receiving the device that the second uplink is transmitted from the 2nd UE；And

For adjusting the system time line of second cellular cell so as to improve from the UE uplink transmission and come From the device of the alignment between the second uplink transmission of the 2nd UE.

15. a kind of device of the wireless communication for the first cellular cell, including：

Processing system is configured to：

It is disabled out based on the scope expansion state of the user equipment (UE) in the scope expansion zoning of first cellular cell Ring power control, wherein the scope expansion area of the UE described in the scope expansion state instruction about first cellular cell The position drawn；

The cooperative multiple spot (CoMP) of control information is passed about what is carried out by second cellular cell with the second cellular cell In the defeated and scope expansion zoning for going to first cellular cell to data by first cellular cell progress The CoMP transmission of the UE communicated；

It is determined by first cellular cell and is passed about the uplink for going to first cellular cell carried out by the UE Defeated expectation transmitted power level；And

The expectation transmitted power level transmitted about the uplink is provided to second cellular cell.

16. device as claimed in claim 15, which is characterized in that providing the expectation transmitted power level includes to described the Two cellular cells provide transmission power control (TPC) information, and the TPC information is used to that the uplink to be arranged for the UE and passes Defeated transmission power.

17. device as claimed in claim 15, which is characterized in that the processing system is further configured to be based in part on It is transmitted by the CoMP transmission to control information that second cellular cell carries out to receive uplink from the UE.

18. device as claimed in claim 15, which is characterized in that the processing system is further configured to pass to the UE The control information is sent, wherein first cellular cell and the second cellular cell cell identification having the same Symbol.

19. device as claimed in claim 15, which is characterized in that first cellular cell is the evolved B node of low-power (eNB) second cellular cell is high power eNB.

20. device as claimed in claim 15, which is characterized in that the processing system is further configured to be based on from described The uplink transmission that UE is received to convey timing-advance information to second cellular cell, and the timing-advance information is used In the uplink timing for adjusting the uplink transmission for the UE.

21. device as claimed in claim 20, which is characterized in that the processing system is further configured to：

The transmission of the second uplink is received from the 2nd UE；And

The system time line of second cellular cell is adjusted to improve the uplink transmission from the UE and to come from institute State the alignment between the second uplink transmission of the 2nd UE.