Source: https://patents.google.com/patent/CN102754381B/en
Timestamp: 2020-04-05 08:23:04
Document Index: 649908287

Matched Legal Cases: ['Application No.61', 'Application No.61', 'art 300', 'art 400', 'art 600', 'art 700', 'art.\n61']

CN102754381B - For the method and apparatus that the channel resource in carrier aggregation maps - Google Patents
For the method and apparatus that the channel resource in carrier aggregation maps Download PDF
CN102754381B
CN102754381B CN201180005669.4A CN201180005669A CN102754381B CN 102754381 B CN102754381 B CN 102754381B CN 201180005669 A CN201180005669 A CN 201180005669A CN 102754381 B CN102754381 B CN 102754381B
CN201180005669.4A
CN102754381A (en
A·Y·蔡
2010-01-08 Priority to US29354010P priority Critical
2010-01-08 Priority to US61/293,540 priority
2010-02-24 Priority to US30772110P priority
2010-02-24 Priority to US61/307,721 priority
2011-01-07 Priority to PCT/US2011/020458 priority patent/WO2011085159A2/en
2012-10-24 Publication of CN102754381A publication Critical patent/CN102754381A/en
2015-11-25 Publication of CN102754381B publication Critical patent/CN102754381B/en
Describe the method and apparatus for maybe preventing physical mixed automatic repeat request (HARQ) indicator channel (PHICH) ambiguity or conflict in such as multicarrier system when transmitting multiple stream by multiple antenna.Method can be included between multiple component carrier (CC) and divide resource or group, use and assign do not use or the resource of free time to CC, force to use adaptive HARQ process in appointment situation, value before the value of the cyclic shift of the uplink demodulation reference signal (DMRS) of correspondence is set to semi-continuous scheduling, the first resource block different for semi-continuous scheduling uplink resource assignment and assign accidental access response mandate for multiple CC.
For the method and apparatus that the channel resource in carrier aggregation maps
This application claims enjoy on January 8th, 2010 submit to U.S. Provisional Application No.61/293,540 and on February 24th, 2010 submit to U.S. Provisional Application No.61/307, the rights and interests of 721, its content is as quoting combination therewith.
At Long Term Evolution (LTE) version 8(R8) in, base station is configured in the DL resource on single down link (DL) carrier wave and the UL resource on single up link (UL) carrier wave can to wireless transmitter/receiver unit (WTRU) respectively.In LTER8, up link (UL) mixed automatic repeat request (HARQ) mechanism can perform the re-transmission of erroneous data packets or the disappearance transmitted by WTRU.ULHARQ function can cross over physics (PHY) layer and medium access controls (MAC) layer.WTRU receives answering/no answering (ACK/NACK) on physics HARQ indicator channel (PHICH).That is, base station in response is in uplink shared channel (UL-SCH) transmission, and PHICH can be used for the transmission of HARQ feedback (ACK/NACK).
User in LTER8 is multiplexing can be performed by the multiple PHICH mapped on the identity set of the resource element (RE) forming PHICH group.PHICH in identical PHICH group is classified by different orthogonal walsh (Walsh) sequences.In order to reduce control signal expense, PHICH index is to can impliedly be associated with the index of minimum uplink Resource Block transmitted for corresponding physical uplink link shared channels (PUSCH) and the cyclic shift of corresponding uplink demodulation reference signal.The associating of PHICH resource and cyclic shift can distribute identical time and frequency resource to some WTRU of support uplink multi-user multiple-input and multiple-output (MU-MIMO).In LTER8, there is not ambiguity or PHICH conflict (causing owing to using identical RB), this is because down link (DL) resource and up link (UL) resource are associated with single DL carrier wave and single UL carrier wave respectively.
In multi-carrier wireless system, WTRU can be assigned with or be configured with multiple component carrier (CC), such as, have at least one DL component carrier and at least one UL component carrier.WTRU can be configured to the CC of the different numbers of polymerization possibility different bandwidth in UL and DL.The one-one relationship between DLCC and ULCC may not be there is in multi-carrier wireless system.In fact, multi-carrier wireless system can use across carrier dispatching, and wherein such as DLCC can carry the information relevant with multiple ULCC.
Can comprise across carrier dispatching and distributing across carrier wave PHICH resource.In such systems, PHICH can be transmitted on a DLCC that can be associated with multiple ULCC.If PHICH is associated with two or more PUSCH, then the application of the PHICH Selecting parameter for resource of LTER8 may cause ambiguity and conflict.
PHICH conflict also may occur in spatial reuse.In spatial reuse, same the first Physical Resource Block (PRB) index can be used to utilize multiple antenna to transmit multiple transmission block.In other words, multiple layer of signaling or multiple stream can use identical PRB index to be transmitted by multiple antenna.Therefore, given each stream needs corresponding ACK/NACK, is applicable to spatial reuse about multiple CC with above-mentioned PHICH relevant problem of conflicting.
Also more detailed understanding can be obtained by reference to the accompanying drawings from the following description provided by way of example, wherein:
Figure 1A is the system diagram of the example communication system can implementing one or more disclosed execution mode wherein;
Fig. 1 C is the system diagram of example radio access network and the Example core net that can use in the communication system shown in Figure 1A;
Fig. 2 (A), 2(B) and 2(C) show the different configuration of three kinds of carrier aggregation;
Fig. 3 is the flow chart of exemplary method, and wherein physical mixed automatic repeat request (HARQ) indicator channel (PHICH) resource or group are divided and are associated with component carrier;
Fig. 4 is the flow chart of the non-self-adapting HARQ procedure at WTRU place;
Fig. 5 is the exemplary plot for the continuous of two users with two uplink component carrier and discontinuous Resourse Distribute;
Fig. 6 is the flow chart of the HARQ procedure illustrated in base station; And
Fig. 7 is the flow chart of the HARQ procedure illustrated at WTRU place.
Figure 1A is the figure of the example communication system 100 can implementing one or more disclosed execution mode wherein.This communication system 100 can be the multi-access systems providing the contents such as such as voice, data, video, message transmission, broadcast to multiple wireless user.Communication system 100 can make multiple wireless user visit these contents by shared system resource (comprising wireless bandwidth).Such as, communication system 100 can adopt one or more channel access methods, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA(OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA) etc.
As shown in Figure 1A, communication system 100 can comprise wireless transmitter/receiver unit (WTRU) 102a, 102b, 102c, 102d, radio access network (RAN) 104, core net 106, public switch telephone network (PSTN) 108, internet 110 and other network 112, but is appreciated that disclosed execution mode can comprise the WTRU of any amount, base station, network and/or network element.Each in WTRU102a, 102b, 102c, 102d can be the equipment being configured to any type operating in wireless environments and/or communicate.Such as, WTRU102a, 102b, 102c, 102d can be configured to transmit and/or receive wireless signal and can comprise subscriber equipment (UE), mobile radio station, fixing or moving user unit, beep-pager, cell phone, PDA(Personal Digital Assistant), smart phone, laptop computer, net book, personal computer, touch pad, wireless senser, consumer electronics product etc.
Communication system 100 can also comprise base station 114a and base station 114b.Each in base station 114a, 114b can be configured to at least one wireless connections in WTRU102a, 102b, 102c, 102d so that be linked into the equipment of any type of one or more communication network (such as core net 106, internet 110 and/or network 112).Such as, base station 114a, 114b can be base transceiver station (BTS), Node B, e Node B, Home Node B, family expenses e Node B, site controller, access point (AP), wireless router etc.Although base station 114a, 114b are each be depicted as discrete component, be to be understood that base station 114a, 114b can comprise base station and/or the network element of the interconnection of any amount.
Base station 114a can be the part of RAN104, and RAN104 can also comprise other base station and/or network element (not shown), such as base station controller (BSC), radio network controller (RNC), via node etc.Base station 114a and/or base station 114b can be configured to transmit in a particular area and/or receive wireless signal, and this specific region can be called as community (not shown).Community can also be divided into cell sector.Such as, the community be associated with base station 114a can be divided into three sectors.Therefore, in one embodiment, base station 114a can comprise three transceivers, and namely transceiver is used for each sector of community.In another embodiment, base station 114a can adopt multiple-input and multiple-output (MIMO) technology, therefore can use multiple transceiver for each cell sector.
Base station 114a, 114b can be communicated with one or more in WTRU102a, 102b, 102c, 102d by air interface 116, this air interface 116 can be the wireless communication link (such as, radio frequency (RF), microwave, infrared (IR), ultraviolet (UV), visible ray etc.) of any appropriate.The radio access technologies of any appropriate (RAT) can be used to set up air interface 116.
More specifically, as mentioned above, communication system 100 can be multi-access systems and can adopt one or more channel access schemes, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA etc.Such as, base station 114a and WTRU102a in RAN104,102b, 102c can embodiment as Universal Mobile Telecommunications System (UMTS) terrestrial radio access (UTRA) radiotechnics, it can use wideband CDMA (WCDMA) to set up air interface 116.WCDMA can comprise the communication protocol of such as high-speed packet access (HSPA) and/or evolved HSPA (HSPA+).HSPA can comprise high-speed downlink packet access (HSDPA) and/or High Speed Uplink Packet access (HSUPA).
In another embodiment, base station 114a and WTRU102a, 102b, 102c can embodiment as Evolved UMTS Terrestrial radio access (E-UTRA) radiotechnics, it can use Long Term Evolution (LTE) and/or senior LTE(LTE-A) set up air interface 116.
In other embodiments, base station 114a and WTRU102a, 102b, 102c can implement radiotechnics, such as IEEE802.16(is namely, worldwide interoperability for microwave access (WiMAX)), CDMA2000, CDMA20001X, CDMA2000EV-DO, Interim Standard 2000(IS-2000), Interim Standard 95(IS-95), Interim Standard 856(IS-856), global system for mobile communications (GSM), enhanced data rates for gsm evolution (EDGE), GSMEDGE(GERAN) etc.
In other embodiments, base station 114a and WTRU102a, 102b, 102c can implement the combination in any of above-mentioned radiotechnics.Such as, base station 114a and WTRU102a, 102b, 102c can each enforcement dual-radio technology, such as UTRA and E-UTRA, and it can use WCDMA to set up an air interface simultaneously respectively and use LTE-A to set up an air interface.
Base station 114b in Figure 1A can be wireless router, Home Node B, family expenses e Node B or access point, and the RAT of any appropriate such as can be used to be convenient to the wireless connectivity in regional area (such as, place of business, house, vehicle, campus etc.).In one embodiment, base station 114b and WTRU102c, 102d the radiotechnics of embodiment as IEEE802.11 can set up wireless lan (wlan).In another embodiment, base station 114b and WTRU102c, 102d the radiotechnics of embodiment as IEEE802.15 can set up Wireless Personal Network (WPAN).In another embodiment, base station 114b and WTRU102c, 102d can use based on honeycomb RAT(such as, WCDMA, CDMA2000, GSM, LTE, LTE-A etc.) set up picocell and Femto cell.As shown in Figure 1A, base station 114b directly can be connected with internet 110.Therefore, base station 114b does not need to enter the Internet 110 via core net 106.
RAN104 can communicate with core net 106, and core net 106 can be configured to the one or more networks providing any type that (VoIP) serves of the voice on voice, data, application and/or Internet protocol in WTRU102a, 102b, 102c, 102d.Such as, core net 106 can provide Call-Control1, billed services, service, prepaid call, Internet connection, video distribution etc. based on shift position, and/or performs advanced security feature, such as user authentication.Although do not illustrate in figure ia, be to be understood that RAN104 and/or core net 106 can use other RAN of identical RAT or different RAT directly or indirectly to communicate from RAN104.Such as, except being connected to the RAN104 that can use E-UTRA radiotechnics, core net 106 can also be not shown with another RAN(of use gsm radio technology) communicate.
Core net 106 can also be used as the gateway that WTRU102a, 102b, 102c, 102d access PSTN108, internet 110 and/or other network 112.PSTN108 can comprise the circuit exchanging telephone net providing plain old telephone service (POTS).Internet 110 can comprise and uses the worldwide interconnection computer network facility system of common communicating protocol, and common communicating protocol is such as transmission control protocol (TCP), User Datagram Protoco (UDP) (UDP) and Internet protocol (IP) in TCP/IP Internet protocol bunch.Network 112 can comprise the wired or wireless communication network that other service supplier has and/or operates.Such as, network 112 can comprise another core net be connected with one or more RAN, and this RAN can adopt the identical or different RAT adopted with RAN104.
Some or all of WTRU102a, 102b, 102c, 102d in communication system 100 can comprise multi-mode ability, namely WTRU102a, 102b, 102c, 102d can comprise multiple transceiver, for passing through different wireless links and different wireless communications.Such as, the WTRU102c shown in Figure 1A can be configured to communicate with the base station 114a of the radiotechnics that can adopt based on honeycomb, and communicates with adopting the base station 114b of IEEE802 radiotechnics.
Figure 1B is the system diagram of example WTRU102.As shown in fig. 1b, WTRU102 can comprise processor 118, transceiver 120, transmitting/receiving element 122, loud speaker/microphone 124, keyboard 126, display/touch screen 128, irremovable storage device 130, removable memory 132, power supply 134, global positioning system (GPS) chipset 136 and other ancillary equipment 138.Be to be understood that WTRU102 is in the norator combination keeping can comprising in the conforming situation of execution mode above element.
Processor 118 can be general processor, application specific processor, conventional processors, digital signal processor (DSP), multi-microprocessor, the one or more microprocessors associated with DSP nuclear phase, controller, microcontroller, application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) circuit, arbitrarily other type integrated circuit (IC), state machine etc.Processor 118 can executive signal coding, data processing, power control, I/O process and/or other function any that WTRU102 can be made to operate in wireless environments.Processor 118 can be coupled with transceiver 120, and transceiver 120 can be coupled with transmitting/receiving element 122.Although Figure 1B shows processor 118 and transceiver 120 is independent assembly, be to be understood that processor 118 and transceiver 120 can be integrated in Electronic Packaging or chip.
Transmitting/receiving element 122 can be configured to by air interface 116 to base station (such as base station 114a) transmission signal or from base station received signal.Such as, in one embodiment, transmitting/receiving element 122 can be the antenna being configured to transmit and/or receive RF signal.In another embodiment, transmitting/receiving element 122 can be transmitter/detector, is configured to transmit and/or receive such as IR, UV or visible light signal.In another embodiment, transmitting/receiving element 122 can be configured to transmit and receive RF and light signal.Be to be understood that transmitting/receiving element 122 can be configured to transmit and/or receive the combination in any of wireless signal.
In addition, although the transmitting/receiving element 122 described in Figure 1B is discrete component, WTRU102 can comprise the transmitting/receiving element 122 of any amount.More specifically, WTRU102 can adopt MIMO technology.Therefore, in one embodiment, WTRU102 can comprise two or more transmitting/receiving elements 122(such as, multiple antenna) for being transmitted by air interface 116 and receiving wireless signal.
Transceiver 120 can be configured to modulate the signal transmitted by transmitting/receiving element 122 and the signal that received by transmitting/receiving element 122 of demodulation.As mentioned above, WTRU102 can have multi-mode ability.Therefore, transceiver 120 can comprise multiple transceiver, to make WTRU102 can via multiple RAT(such as, UTRA with IEEE802.11) and communicate.
The processor 118 of WTRU102 can be coupled to loud speaker/microphone 124, keyboard 126 and/or display/touch pad 128(such as liquid crystal display (LCD) display unit or Organic Light Emitting Diode (OLED) display unit) and therefrom receive user input data.Processor 118 can also export user data to loud speaker/microphone 124, keyboard 126 and/or display/touch screen 128.In addition, processor 118 also can store data wherein from suitable memory (such as irremovable storage device 130 and the removable memory 132) visit information of any type.Irremovable storage device 130 can comprise the memory device of random-access memory (ram), read-only memory (ROM), hard disk or other type arbitrarily.Removable memory 132 can comprise Subscriber Identity Module (SIM) card, memory stick, secure digital (SD) storage card etc.In other embodiments, processor 118 can from not geographically being positioned at WTRU102 (such as on the server or on home computer (not shown)) memory access information and store data wherein.
Processor 118 can receive the electric power from power supply 134, and can be configured to the electric power distributing and/or control to other assembly in WTRU102.Power supply 134 can be the equipment for any appropriate of powering to WTRU102.Such as, power supply 134 can comprise one or more dry cell (such as, NI-G (NiCd), nickel zinc (NiZn), ni-mh (NiMH), lithium ion (Li-ion) etc.), solar cell, fuel cell etc.
Processor 118 can also be coupled to GPS chipset 136, and this GPS chipset 136 can be configured to provide the positional information (such as, longitude and latitude) about WTRU102 current location.Except or substitute from the information of GPS chipset 136, WTRU102 can by air interface 116 from base station (such as, base station 114a, 114b) receiving position information, and/or the position of this WTRU102 is determined based on the timing (timing) of signal that the base station near two or more receives.Be to be understood that WTRU102 can obtain positional information by the location determining method of any appropriate in the conforming situation of maintenance execution mode.
Processor 118 can also be coupled to other ancillary equipment 138, and this ancillary equipment 138 can comprise one or more software and/or hardware module, and it provides other feature, function and/or wired or wireless connection.Such as, ancillary equipment 138 can comprise accelerometer, digital compass, satellite transceiver, digital camera (for photo or video), USB (USB) port, vibratory equipment, television transceiver, Earphone with microphone, bluetooth module, frequency modulation (FM) radio unit, digital music player, media player, video game machine module, explorer etc.
Fig. 1 C is the system diagram of RAN104 according to a kind of execution mode and core net 106.As mentioned above, RAN104 can adopt E-UTRA radiotechnics to be communicated with WTRU102a, 102b, 102c by air interface 116.RAN104 can also communicate with core net 106.
RAN104 can comprise e Node B 140a, 140b, 140c, but is to be understood that RAN104 can comprise the e Node B of any amount in the conforming situation keeping execution mode.E Node B 140a, each of 140b, 140c can comprise one or more transceiver, for being communicated with WTRU102a, 102b, 102c by air interface 116.In one embodiment, e Node B 140a, 140b, 140c can implement MIMO technology.Therefore, such as e Node B 140a can use multiple antenna to come to transmit wireless signal to WTRU102a or receive wireless signal from WTRU102a.
E Node B 140a, 140b, 140c each can with each may the one or more communities (not shown) on different carrier frequencies be associated and can be configured to process provided for radio resources management determine, switch determine, user scheduling etc. in up link and/or down link.As is shown in fig. 1 c, e Node B 140a, 140b, 140c can be communicated with one another by X2 interface.
Core net 106 shown in Fig. 1 C can comprise mobile management gateway (MME) 142, gateway 144 and packet data network (PDN) gateway 146.Although each part being depicted as core net 106 of said elements, any one being to be understood that these elements can be had by the entity beyond core network operators and/or operate.
MME142 can via S1 interface be connected in RAN104 in e Node B 142a, 142b, 142c each, and can Controlling vertex be used as.Such as, MME142 may be used for the user of WTRU102a, 102b, 102c is carried out to certification, carrying setting/configuration/release, between WTRU102a, 102b, 102c initial setting stage, selects particular service gateway etc.MME142 can also be provided at RAN104 and adopt other RAN(of other radiotechnics (such as GSM or WCDMA) not shown) between carry out the control plane function that switches.
Gateway 144 can be connected to via S1 interface e Node B 140a in RAN104,140b, 140c each.Gateway 144 usually can route and the user data packets forwarded to/from WTRU102a, 102b, 102c.Gateway 144 can also perform other function, such as between e Node B grappling user plane in handoff procedure, trigger paging, management store the context (context) etc. of WTRU102a, 102b, 102c when down link data can be used for WTRU102a, 102b, 102c.
Gateway 144 can also be connected to PDN Gateway 146, this PDN Gateway 146 provides access to the packet switching network (such as internet 110), so that the communication between WTRU102a, 102b, 102c and IP enabled devices can to WTRU102a, 102b, 102c.
Core net 106 can so that with the communication of other network.Such as, core net 106 provides the access of Circuit Switching Network (such as PSTN108) to WTRU102a, 102b, 102c so that communication between WTRU102a, 102b, 102c and conventional land line traffic equipment.Such as, core net 106 can comprise IP gateway (such as, IP Multimedia System (IMS) server) or communicate with IP gateway, and it is used as the interface between core net 106 and PSTN108.In addition, core net 106 is provided to the access of network 112 can to WTRU102a, 102b, 102c, and this network 112 can comprise other wired or wireless network that other service supplier has and/or operates.
Without loss of generality, the term " component carrier (CC) " hereafter mentioned comprises the frequency of operation of WTRU.Such as, WTRU can " DLCC " below down link CC() on receive transmission.DLCC can comprise multiple DL physical channel, includes but not limited to physical control format indicator channel (PCFICH), physical mixed automatic repeat request indicator channel (PHICH), physical downlink control channel (PDCCH), physics Multi-cast Data Channel (PMCH) and physical down link sharing channel (PDSCH).On PCFICH, WTRU receives the control data of the control area size of instruction DLCC.On PHICH, WTRU can receive the control data indicating and feed back mixed automatic repeat request (HARQ) answering/no answering (ACK/NACK) of ul transmissions before.On PDCCH, WTRU receives down link control information (DCI) message that may be used for scheduled downlink resource and uplink resource.On PDSCH, WTRU can receive user data and/or control data.
In another example, WTRU can " ULCC " below up link CC() above to transmit.ULCC can comprise multiple UL physical channel, includes but not limited to physical uplink control channel (PUCCH) and physical uplink link shared channels (PUSCH).On PUSCH, WTRU can transmit user data and/or control data.On PUCCH, and in certain situation on PUSCH, WTRU can transmit uplink control information (such as CQI/pre-coding matrix index/order instruction (CQI/PMI/RI) or dispatch request (SR)) and/or HARQACK/NACK feedback.On ULCC, WTRU can also be allocated for the private resource of the transmission of detection reference signal (SRS).
DLCC can be associated with ULCC based on the system information (SI) that maybe may use the specialized configuration signaling of automatic network to be received by WTRU broadcasted on DLCC.Such as, when being broadcasted on DLCC, WTRU can receive the uplink frequency of associated ULCC and bandwidth as system information block type 2(SIB2) part of information element.
The main CC hereafter mentioned can be the CC in basic frequency operation, and in this basic frequency, WTRU performs initial connection establishment process or initiates connection and re-establishes process, can be maybe the CC being indicated as main CC in handoff procedure.WTRU can use main CC to obtain the parameter for security functions and upper system information (such as NAS mobility information).Other function that main DLCC can support SI that can be included on broadcast channel (BCCH) obtains and changes monitor procedure and paging.Main ULCC can correspond to the CC that its PUCCH resource is configured to all HARQACK/NACK feedbacks of carrying for given WTRU.The secondary CC hereafter mentioned can be the CC operated on secondary frequencies, and this secondary frequencies can control at radio resource be configured and may be used for providing extra radio resource when (RRC) connection is established.
At LTE version 8(R8) in, up link (UL) mixed automatic repeat request (HARQ) mechanism may be used for the re-transmission performing disappearance or the erroneous data packets transmitted by WTRU.ULHARQ function can cross over physics (PHY) layer and medium access controls (MAC) layer and operates as described herein.WTRU can perform that PDCCH asks, and i.e. when the cell-radio network temporary identifier (C-RNTI) being addressed to WTRU is correctly received the content (ACK or NACK) of HARQ feedback (no matter), performs transmission or retransmits (being called adaptive retransmission).When the PDCCH of the C-RNTI not being addressed to WTRU being detected, HARQ feedback can order WTRU how to perform re-transmission.Non-self-adapting can be performed for NACK, WTRU to retransmit, namely retransmit with in the identical UL resource used before same process.Any UL can not be performed for ACK, WTRU transmit or retransmit, and data are remained in HARQ buffer.PDCCH can be required to perform re-transmission afterwards, does not carry out non-self-adapting re-transmission namely.
Generally speaking, the uplink HARQ agreement in LTER8 can be supported self adaptation or non-self-adapting transmission or retransmit.Non-self-adapting HARQ can be considered to the basic manipulation mode in UL.ULHARQ operation in LTER8 is summarized in Table 1, and this table 1 shows the behavior based on the HARQ feedback sent on PHICH.
As described herein, from the angle of WTRU, the PHY layer in WTRU can by receive on PHICH and the ACK/NACK being assigned to WTRU is delivered to the higher level of WTRU.For downlink subframe i, if transmission block is transmitted in the PUSCH subframe be associated, if then ACK is decoded on PHICH in subframe i, ACK can be delivered to higher level.Otherwise NACK can be delivered to higher level.
As mentioned above, in LTER8, in response to uplink shared channel (UL-SCH) transmission, PHICH may be used for the transmission (ACK or NACK) of HARQ feedback.User in LTER8 is multiplexing can by mapping multiple PHICH to perform in the same set of resource element (RE) that can form PHICH group.PHICH in identical PHICH group can be classified by different orthogonal Walsh sequences.The quantity of PHICH group can be the function of DL bandwidth (BW), and can be determined by following:
Wherein, N g∈ 1/6,12,1,2} can be provided by higher level, and can be the quantity of DL Resource Block (RB).Term N git is the zoom factor indicating the resource quantity that can be assigned with.Such as, if N gequal 2, then its expression can be arranged to the maximum of the given bandwidth of system and allow resource.Usually higher level signaling is used to set zoom factor by such as base station.Therefore, the maximum quantity of PHICH resource for conventional cyclic prefix (CP) and expansion CP can calculate respectively as shown in table 2 and table 3.Particularly, table 2 show for conventional CP as DLBW and N gthe quantity of PHICH group of function, table 3 show for expand CP as DLBW and N gthe quantity of PHICH of function.
6RB 15RB 25RB 50RB 75RB 100RB Ng=1/6 1 1 1 2 2 3 Ng=1/2 1 1 2 4 5 7 Ng=1 1 2 4 7 10 13 Ng=2 2 4 7 13 19 25
6RB 15RB 25RB 50RB 75RB 100RB Ng=1/6 2 2 2 4 4 6 Ng=1/2 2 2 4 8 10 14 Ng=1 2 4 8 14 20 26 Ng=2 4 8 14 26 38 50
PHICH resource can by index pair impliedly identify, wherein, can be PHICH group number and it can be the orthogonal sequence index in group.
In order to reduce control signal expense, PHICH index is to can impliedly be associated with the index of the minimum uplink Resource Block for corresponding PUSCH transmission and the cyclic shift of corresponding UL demodulated reference signal (DMRS), as follows:
n PHICH group = ( I PRB _ RA lowest _ index + n DMRS ) mod N PHICH group + I PHICH N PHICH group
Wherein, parameter can be defined as follows:
N dMRSmapped from the cyclic shift in the DMRS field nearest down link control information (DCI) form 0 for the transmission block be associated with corresponding PUSCH transmission.It can be 3 bit fields and configure for unique user, n dMRScan 0 be set to.For at subframe n-k pUSCHin lack the PUSCH transmission of the semi-continuous configuration in the PDCCH situation of the correspondence with DCI format 0 on subframe n, or for the PUSCH transmission be associated with accidental access response mandate, n dMRScan 0 be set to, wherein for FDD transmission, k pUSCH=4;
be the spreading factor size for PHICH modulation, be defined as the function of Cyclic Prefix;
it is the minimal physical RB index in first time slot of the PUSCH transmission of correspondence;
the quantity of the PHICH group configured by higher level; And
The associating of PHICH resource and cyclic shift can distribute identical time and frequency resource to some WTRU of support uplink multi-user multiple-input and multiple-output (MU-MIMO).
At senior LTE(LTE-A) in, can carrier aggregation be used.WTRU can be configured to the CC of the possible different bandwidth being polymerized varying number in UL and DL.Fig. 2 (A), 2(B), 2(C) show three kinds of example arrangement of LTE-A carrier aggregation.Fig. 2 (A) shows symmetrical carrier aggregation.Fig. 2 (B) shows a multiple DLCC and ULCC, and Fig. 2 (C) shows a DLCC and multiple ULCC.In these multicarrier systems, the PDCCH on CC can use multi-carrier indicator field (CIF) to assign PDSCH resource or PUSCH resource in a CC of multiple CC.The above-mentioned DCI format that can have 3 bit CIF by expansion realize.For HARQ feedback transmission, PHICH can be taked to be transmitted on the DLCC for transmitting UL mandate.
In LTE-A, can use and intersect carrier dispatching and this intersection carrier dispatching and can comprising and intersect carrier wave PHICH resource and distribute.In such systems, PHICH can transmit on the DLCC that can be associated with multiple ULCC.If PHICH is associated with two or more PUSCH, then the application of the PHICH Selecting parameter for resource of LTER8 may cause ambiguity and conflict.Such as, the UL transmission on two or more CC can be dispatched by identical DLCC.In this example, if the PUSCH transmission on two or more CC uses identical minimum PRB index then may not be unique according to associating of the PHICH resource in the DL of LTER8 and the minimum PRB index for the PUSCH transmission in UL and PHICH resource conflict can occur.In fact, take non-self-adapting HARQ operation, can attempt in identical PHICH resource, transmit their corresponding feedback informations in multiple HARQ processes of base station, this may cause PHICH resource conflict.
Some schemes being provided for solving this problem are not enough.Such as, a kind of scheme can the specific PHICH resource skew of semi-static configuration UL carrier wave.But this replaceable mode needs a large amount of PHICH resource, such as each UL carrier wave needs a set.Another kind of scheme can based on the wide index of system of PHICH resource and PRB, from WTRU, be extended to LTE-AWTRU.The deficiency of this alternative is that the program can not backward compatibility, therefore LTER8 and LTE version 10(R10) or LTE-AWTRU can not coexist.In addition, shown, when some ULCC transmission uses an identical PRB index, can avoid conflict by using different DMRS cyclic shift in LTER8.But the method limits the ULMU-MIMO ability of LTE-A compared with LTER8.In fact, in LTE-A, can cyclic shift be consumed by configuration MU-MIMO transmission, therefore, use cyclic shift to avoid PHICH to conflict and UL throughput of system may be caused to lose.
Execution mode below determines these schemes (some may relate to implicit PHICH mapping scheme) solving channel resource mapping and PHICH mapping fuzzy problem.Scheme goes for totally assigning radio resource to the Frequency Division Duplexing (FDD) (FDD) in LTE-A or time division duplex (TDD) operator scheme, or the combination in any of radio resource technology.
These methods below summarized and execution mode any or all of can obtain the support of WTRU to solve described problem.Except can be applicable to these determined method and execution modes of WTRU, these methods and execution mode also can be supported in base station.
In the method for example, existing PHICH resource group can be divided and be assigned to different ULCC by the scheduler such as in base station.Only for the object of example, PHICH mapping ruler can be determined by the following:
Wherein, above parameter is defined as foloows:
can be distribute to n-th cIthe quantity of the PHICH group of individual ULCC;
it can be the orthogonal sequence index in group;
N cIit can be the index of the ULCC of the transmission of the PUSCH for correspondence;
N dMRScan be mapped from the cyclic shift in the DMRS field the nearest DCI format 0 for the transmission block be associated with corresponding PUSCH transmission;
can be the spreading factor size for PHICH modulation, be defined as the function of Cyclic Prefix;
it can be the minimal physical RB index in first time slot of the PUSCH transmission of correspondence;
can be the quantity of the PHICH group configured by higher level; And
N cCthe quantity of the ULCC being associated with single DLCC can be represented.
Above-mentioned three parameters, namely and n cIcan be determined by following: use the specific C-RNTI of WTRU to decode to read for authorizing the DCI format 0(of PUSCH transmission to suppose that CIF exists to PDCCH on the DLCC be associated).
In this approach, N can be taked g=2, to maximize the quantity of available PHICH group.According to the quantity of the ULCC of polymerization, other value is also possible.As shown in table 2, the quantity of PHICH group can also be the function of DLBW.Therefore, when DL bandwidth is 6RB and 12RB, the maximum quantity of the CC of the polymerization that can support can be 2 and 4 respectively.
In the distortion of this exemplary method, N can be taked g=1/4, thus for the BW up to 25RB, may only there is a PHICH group available.Therefore, PHICH group can not be divided and be exclusively used in different carrier waves.But this can be solved by the total PHICH resource of division or PHICH channel (instead of PHICH group).Such as, for N gthe sum of=1/4, PHICH channel can be 8.8 PHICH channels can be divided into several part, and each part then can be associated with a CC.In addition, other configurations for some, such as N g=1/2 or N gthe quantity of=1, PHICH group can be 2 and 4 respectively, and the maximum quantity of supported like this carrier wave can be limited to 2 and 4 respectively.In addition, this can be solved by the sum (instead of PHICH group) dividing PHICH resource or channel.Table 4 shows for 5MHz bandwidth, can have different N gthe quantity of PHICH group be divided between the carrier wave of configuration and the quantity of PHICH channel.
Ng=1/4 Ng=1/2 Ng=1 Ng=2 The quantity of PHICH group 1 2 4 7 The quantity of PHICH channel 8 16 32 56
This exemplary method can comprise channel resource possible arbitrarily, PHICH resource, channel, group or its division of combining.Each division can be arranged to or be assigned to specific CC.
Fig. 3 shows the flow chart 300 that exemplary method is shown.WTRU uses such as that it can be assigned to WTRU and transmits for UL for ULCC() the specific C-RNTI of WTRU (305) are decoded to the PDCCH on the DLCC be associated.Then WTRU determines one group of dynamic parameter, such as n dMRSand n cI(310).Use one group of semi-static parameter, such as N being configured by higher level cCwith (320) and dynamic parameter, WTRU assigned resources, group or its combination (315) in proportion between ULCC.The ratio of assigning in proportion described in ULCC can be uniform or uneven.Particularly, such as, according to the mapping ruler of equation (3), WTRU can determine the quantity of PHICH group and the sequence index number of this group that are assigned to ULCC, such as
In another approach, assuming that in order to increase the user capacity under carrier aggregation, WTRU can be assigned with more than one RB on given CC.But, may still exist each PHICH resource and for PUSCH transmission PRB index between mapping one to one.Therefore, the available untapped PHICH resource be not assigned for HARQ feedback transmission may be there is.These residues or the PHICH resource of free time can be used to avoid PHICH resource conflict.Therefore, in this exemplary method, basic hypothesis can be made: each user on each ULCC assigns and can be more than or equal to the quantity of the ULCC of polymerization or the quantity of transmission block at RB quantitative aspects.State with other forms, L rB>=N cC, wherein N cCthe quantity of the ULCC of the polymerization being associated with single DLCC can be represented, L rBcan be continuous for each CC or the discontinuous length distributing to the RB of WTRU.
WTRU can pass through the parameter in equation (2) replace to use following mapping equation:
n PHICH , i group = ( ( I PRB _ RA lowest _ index + &Delta; i ) + n DMRS ) mod N PHICH group + I PHICH N PHICH group
Wherein, parameter other above is defined as foloows:
it can be the minimum PRB index in first time slot of the PUSCH transmission of correspondence; And
Δ ican be skew that CC is relevant or with can be applied to the skew that is associated of the index of transmission block, and conflict avoidance parameter can be identified as.Parameter Δ ithe PRB index in the RB of the WTRU of continuous or discontinuous distribution is may be used for be associated with different CC uniquely to avoid PHICH resource conflict.Such as, Δ ipoint to the extra or idling-resource in main CC.For having N rBthe system of individual RB, parameter Δ ifollowing value can be got:
Δ i∈{0,1,..,N RB-1}
Parameter Δ ican be configured by higher level signaling and be transferred to WTRU, or be identified based on the mapping ruler of its PRB basic of distribution preassignment by WTRU.In order to realize described mark, PRB index during a kind of possible mapping ruler may be used for the UL be assigned with in ULCC to authorize is associated with the sequence of PHICH resource in order, uses these PHICH resource to transmit the HARQ feedback corresponding to multiple ULCC afterwards.Such as, with ULCC 0on the PHICH resource that is associated of PUSCH transmission can be associated with minimum PRB index that the PRB that is assigned to WTRU concentrates (that is, ), with ULCC 1on the PHICH resource that is associated of the PUSCH transmission second little PRB that can be associated with that the PRB that is assigned to WTRU concentrates, wait (thus, for all ULCC, appointment can incrementally continue).
Fig. 4 is based on the flow chart 400 of the exemplary method be associated with equation (4) in the non-self-adapting HARQ procedure at WTRU place.Method starts from WTRU and decodes (405) to the PDCCH that can comprise on the DLCC of the resource information of CC.Then, the ULPRB identified (410) of multiple CC is allocated for.Then WTRU determines the minimum PRB index whether identical (415) that the PRB between multiple CC distributes.If there is no conflict (420), then WTRU identifies the PHICH resource (425) be assigned according to described LTER8 method.If there is potential conflict, then WTRU determines whether the quantity of RB is more than or equal to the quantity (430) of CC.If CC is more than RB, then the method inapplicable (440) be associated with equation (4).In this case, other method described here can be used.If the quantity of RB is more than or equal to the quantity of CC, then WTRU is for each CC or the transmission block relevant with main ULCC, determines conflict avoidance factor Δ i(445).Then WTRU determines for the orthogonal sequence index (450) in the quantity of the PHICH group of each ULCC and PHICH group according to equation (4), and method completes (455).
Fig. 5 shows the example of the method shown in Fig. 4 of use.As shown in Figure 5, at the ULCC(CC with two polymerizations 0and CC 1) system in, two user (WTRU can be given on each CC 0and WTRU 1) distribute two RB.Can at CC 0on distribute two discontinuous RB, at CC to two users 1on distribute two continuous RB to two users.In other words, each user (WTRU 0and WTRU 1) can be configured at CC 0and CC 1upper transmission two transmission blocks.Therefore each user expects to receive the feedback information relevant with the transmission block be transmitted on the PHICH carried by DLCC.The application of LTER8 process will cause PHICH resource conflict, because WTRU expects ACK/NACK to each transport block transmission.Such as, RB 0wTRU is used for for sending 0transmission block 1 and the ACK/NACK of transmission block 2, RB 1wTRU is used for for sending 1transmission block 1 and the ACK/NACK of transmission block 2.But use the method for Fig. 4 and given above-mentioned PHICH conflict, each WTRU determines whether the quantity of the resource be assigned with is more than or equal to the quantity of CC.In this example, for each WTRU, this is real.CC in this example about main ULCC( 0), the conflict avoidance factor that then each WTRU will calculate for CC quantity.In this example, WTRU 0can expect to receive its HARQ feedback to PHICH resource, this PHICH resource is associated with for respectively at CC 0and CC 1the RB of two transmission blocks of upper transmission 0and RB 2(that is, WTRU 0Δ can be determined i∈ 0,2}).As for WTRU 1, it can expect to receive its HARQ feedback to PHICH resource, and this PHICH resource is associated with for respectively at CC 0and CC 1the RB of two transmission blocks of upper transmission 1and RB 3(that is, WTRU 1Δ can be determined i∈ 1,3}).
The another kind of method of conflicting for avoiding PHICH resource can allocation plan Network Based.More specifically, when PHICH resource is conflicted, base station can perform corresponding to all ULCC(except transmitting on PDCCH) HARQ feedback.The result of this mode can be that self adaptation operator scheme is ordered for multiple HARQ process, and in HARQ process only one can based on non-self-adapting HARQ process.In order to backward compatibility, when LTER8 and LTE-AWTRU shares PHICH resource, available PHICH resource can be assigned to LTER8WTRU.The method uses non-self-adapting HARQ process and adaptive HARQ process in a complementary fashion, to realize avoiding of PHICH resource conflict.
Fig. 6 is the flow chart 600 of collocation method Network Based in the HARQ procedure of base station.Initially, ULPRB(605 can be distributed in base station on the multiple CC configured at WTRU place).The minimum PRB index whether identical (610) that the PRB between multiple CC distributes is determined in base station then.If the minimum index not identical (615) between multiple CC that PRB distributes, then base station can perform LTER8HARQ transmission method (620) described here.If the minimum PRB index that PRB distributes is identical, then base station triggers to be conflicted the adaptive HARQ process (625) of each CC of possibility for having PHICH.The suitable feedback (ACK/NACK) for adaptive HARQ process can be transmitted in base station on PDCCH, and on PHICH, transmit suitable feedback (ACK/NACK) (630) for non-self-adapting HARQ process.
Before the review network collocating method from WTRU angle, notice in LTER8, there is the HARQ entity maintaining multiple parallel HARQ processes at WTRU place.In order to support the carrier aggregation in LTE-A, HARQ process can be taked can be exclusively used in each ULCC.
Be described in now the behavior of WTRU place (especially at MAC layer place).Can expect at the HARQ entity at WTRU place to receive the Transmission Time Interval (TTI) of feedback transmission (ACK/NACK information) corresponding to any ULCC, first WTRU can carry out having transmitted initial UL thereon to DLCC(and authorize) on the search of PDCCHDCI form 0/0x.Notice, DCI format 0x represents for single user (SU)-MIMO(SU-MIMO) UL of transmission mode authorizes.If the C-RNTI(being addressed to WTRU or semi-continuous scheduling C-RNTI for CC) UL authorize be detected, then HARQ entity can identify the HARQ process of correspondence having occurred to transmit, then by the ACK/NACK information router that receives to suitable HARQ process.When the PDCCHDCI form 0/0x of the C-RNTI not being addressed to WTRU being detected for given CC, then HARQ entity can be attempted obtaining the feedback information transmitted in PHICH, then the content (ACK or NACK) of HARQ feedback is routed to suitable HARQ process.Can by some information delivery to higher level about the PHY layer in PHICH, WTRU.
Particularly, for downlink subframe i, if transmission block is transmitted in the PUSCH subframe be associated, if then ACK is decoded on PHICH in subframe i, then ACK can be delivered to higher level.On the contrary, if NACK is decoded on PHICH in subframe i, then NACK can be delivered to higher level.If detect do not have PHICH in subframe i, then WTRU can not have PHICH to higher level instruction.This is summarized in table 5.
The result of network collocating method can be that control channel expense increases, and this directly may cause extra PDCCH transmission due to the adaptive HARQ transmission performed for some feedback transmission.But for the DL scheduler of the suitable design in base station, the probability that there is PHICH conflict is relatively low.Therefore, undesirably make base station initiate many adaptive HARQs at given TTI to retransmit.In fact the method can minimize the impact on normalize results, because it can only need to insert the process in R8HARQ process.
Fig. 7 is the flow chart 700 of the WTRU behavior according to network collocating method.Initially, the HARQ entity at WTRU place determines its TTI(705 expecting receiving feedback information).Then WTRU initiates to have transmitted initial UL thereon at CC(and authorize) the search to PDCCHDCI form 0/0x (710).Then WTRU attempts detecting and is used for authorizing (715) by the UL of each CC of the C-RNTI addressing of WTRU.If the PDCCHDCI form 0/0x(720 of the C-RNTI not being addressed to WTRU detected for given CC), then WTRU can attempt obtaining the feedback information (725) transmitted in PHICH.Then the content of HARQ feedback (ACK or NACK) can be routed to the suitable HARQ process (730) to each CC by HARQ entity.Then process completes (740).If the C-RNTI(or semi-continuous scheduling C-RNTI that are addressed to WTRU detected for CC) UL authorize, then HARQ entity can identify the HARQ process of correspondence having occurred to transmit, then by the ACK/NACK information router that receives to suitable HARQ process (735).Then process completes (740).
The present method describing the problem that solution is associated with the mode avoiding PHICH to conflict based on cyclic shift.The method solves can by problem during semi-continuous configuration or when being assigned with accidental access response mandate on multiple UL component carrier on multiple UL component carrier two or more users.
Particularly, for do not exist the correspondence with DCI format 0 PDCCH semi-continuous configuration PUSCH transmission or for the PUSCH transmission be associated with accidental access response mandate, variable n dMRSbe set to 0.This can imply if the user of two or more semi-continuous common scheduling shares the identical less Resource Block on UL component carrier, wherein this UL component carrier receives their mandate for its PUSCH transmission from identical DL component carrier, then all these users jointly dispatched can be assigned identical cyclic shift (that is, n for they ULDMRS dMRS=0).Therefore, owing to relying on the scheme based on cyclic shift, PHICH conflict is inevitable.
At subframe n-k pUSCHin do not have in the situation of the PUSCH transmission of the semi-continuous configuration on the subframe n of the PDCCH of the correspondence of DCI format 0, WTRU can based on assign semi-continuous Resourse Distribute nearest mandate in information determine its n dMRS.In base station, scheduler can be dispatched, and the WTRU of the common scheduling thus on multiple ULCC can be assigned the part of different first resource blocks as the PUSCH of the initial semi-continuous scheduling of WTRU.
When the PUSCH transmission be associated with accidental access response mandate, scheduler can configure the WTRU of the common scheduling on multiple ULCC, and WTRU is assigned the part of different first resource blocks as its accidental access response mandate thus.This may produce different PHICH resource, avoids the conflict of the PHICH resource being derived from different ULCC thus.
1, in the method for performing feedback channel resources mapping that base station is implemented, at least one in the feedback channel resources or feedback channel group dividing and distribute is comprised.
2, the method according to embodiment 1, also comprises and the feedback channel resources be divided or feedback channel group is assigned to uplink component carrier.
3, according to the method in above-described embodiment described in any embodiment, wherein, implicit expression mapping ruler uses feedback channel group number and sequence index number the feedback channel resources be divided or feedback channel group to be associated with uplink component carrier.
4, a kind of method for performing feedback channel resources mapping implemented at wireless transmitter/receiver unit (WTRU) place, the downlink control channel comprised being associated with granting uplink resources is decoded.
5, the method according to embodiment 4, also comprises and determine one group of dynamic parameter from decoded downlink control channel.
6, according to the method in embodiment 4-5 described in any embodiment, reception one group of semi-static parameter is also comprised.
7, according to the method in embodiment 4-6 described in any embodiment, also comprise, based on described dynamic parameter and semi-static parameter group, at least one in the feedback channel resources be assigned with or feedback channel group is assigned to uplink component carrier.
8, according to the method in embodiment 4-7 described in any embodiment, also comprise and determine feedback channel group number from dynamic parameter and semi-static parameter group.
9, according to the method in embodiment 4-8 described in any embodiment, also comprise and determine sequence index number from dynamic parameter and semi-static parameter group.
10, according to the method in embodiment 4-9 described in any embodiment, also comprise and use feedback channel group number at least one in the feedback channel resources be assigned with or feedback channel group to be associated with uplink component carrier with sequence index number.
11, a kind of method for performing feedback channel resources mapping implemented at wireless transmitter/receiver unit (WTRU) place, comprises and determines feedback channel resources conflict.
12, the method according to embodiment 11, also be included in when there is feedback channel resources conflict and determine conflict avoidance index, wherein, the untapped resource that is assigned with of conflict avoidance index point by the untapped resource associations be assigned with to uplink component carrier or transmission block.
13, according to the method in embodiment 11-12 described in any embodiment, wherein, feedback channel resources regular inspection really of conflicting looks into the homogeny of the least resource be assigned with between uplink component carrier.
14, according to the method in embodiment 11-13 described in any embodiment, also comprise and check that the quantity of the untapped resource be assigned with is more than or equal to uplink component carrier or transmission block.
15, according to the method in embodiment 11-14 described in any embodiment, also comprise and determine feedback channel group number from least conflict avoidance index.
16, according to the method in embodiment 11-15 described in any embodiment, also comprise and determine sequence index number from least conflict avoidance index.
17, according to the method in embodiment 11-16 described in any embodiment, also comprise and use feedback channel group number and sequence index number the untapped resource be assigned with to be associated with uplink component carrier or transmission block.
18, according to the method in embodiment 11-17 described in any embodiment, wherein, conflict avoidance index is configured by higher level signaling and is transferred to WTRU.
19, according to the method in embodiment 11-18 described in any embodiment, wherein, WTRU uses predetermined mapping ruler to carry out identification collision based on Resourse Distribute and avoids index.
20, in the method for avoiding feedback channel resources to conflict that base station is implemented, comprising and determining feedback channel resources conflict.
21, the method according to embodiment 20, also comprises each uplink component carrier for having feedback channel resources conflict, performs self adaptation feedback channel process.
22, according to the method in embodiment 20-21 described in any embodiment, wherein, feedback channel resources regular inspection really of conflicting looks into the homogeny of the least resource of the distribution between uplink component carrier.
23, according to the method in embodiment 20-22 described in any embodiment, wherein, non-self-adapting feedback channel process is for having a uplink component carrier of feedback channel resources conflict.
24, a kind of method for avoiding feedback channel resources to conflict implemented at wireless transmitter/receiver unit (WTRU) place, be included in the feedback information time of reception of expection, the down link control information on the downlink control channel that search is associated with granting uplink resources.
25, the method according to embodiment 24, under being also included in the uplink grant situation component carrier being addressed to WTRU being detected, is routed to the identified feedback process for each component carrier by feedback information.
26, according to the method in embodiment 24-25 described in any embodiment, the feedback process be suitable for of failing to detect and to be routed to by the feedback information obtained from feedback channel in uplink grant situation for each component carrier is also included in.
27, the method avoiding the feedback channel resources of the wireless transmitter/receiver unit (WTRU) for jointly dispatching to conflict, comprises to the ul transmissions in the semi-continuous configuration subframe of each WTRU.
28, the method according to embodiment 27, also comprise for each WTRU, when there is not downlink control channel in previous subframe, parameter value is determined from assigning the mandate of semi-continuous Resourse Distribute, wherein, this parameter is mapped to the cyclic shift of corresponding uplink demodulation with reference to (reference) channel (DMRS).
29, the method according to embodiment 24, wherein, each WTRU has the different first resource block of the ul transmissions for semi-continuous configuration.
30, the method avoiding the feedback channel resources of the user radio transmitter/receiver unit (WTRU) for jointly dispatching to conflict, is included on multiple component carrier and dispatches accidental access response mandate to WTRU.
31, the method according to embodiment 30, also comprises the respective accidental access response mandate for WTRU, different first resource blocks is assigned to each WTRU.
32, for the method that the channel resource performing carrier aggregation maps, the method comprises the existing channel resource group of division.
33, the method according to embodiment 32, also comprises and existing channel resource group is assigned to different up link (UL) component carriers (CC).
34, according to the method in embodiment 32-33 described in any embodiment, Physical Hybrid ARQ Indicator channel (PHICH) resource mapping of application for carrier aggregation is also comprised.
35, according to the method in embodiment 32-34 described in any embodiment, wherein, implicit expression Physical Hybrid ARQ Indicator channel (PHICH) mapping scheme solves PHICH mapping ambiguity.
36, according to the method in embodiment 32-35 described in any embodiment, wherein, the method is applicable to Frequency Division Duplexing (FDD) (FDD).
37, according to the method in embodiment 32-36 described in any embodiment, wherein, the method is applicable to FDD or time division duplex (TDD) or the operator scheme of both.
38, according to the method in embodiment 32-37 described in any embodiment, wherein, the method is applicable to senior Long Term Evolution (LTE-A).
39, according to the method in embodiment 32-38 described in any embodiment, also comprise and divide existing Physical Hybrid ARQ Indicator channel (PHICH) resource group.
40, according to the method in embodiment 32-39 described in any embodiment, also comprise and assign existing Physical Hybrid ARQ Indicator channel (PHICH) resource group to different UL component carriers (CC).
41, according to the method in embodiment 32-40 described in any embodiment, wherein, the method is performed by scheduler.
42, according to the method in embodiment 32-41 described in any embodiment, also comprise and perform Physical Hybrid ARQ Indicator channel (PHICH) mapping ruler.
43, according to the method in embodiment 32-42 described in any embodiment, wherein, PHICH mapping ruler is:
44, according to the method in embodiment 32-43 described in any embodiment, wherein, be assigned to n-th cIthe quantity of the PHICH group of individual UL component carrier (CC).
45, according to the method in embodiment 32-44 described in any embodiment, wherein, the orthogonal sequence index in group, n cIit is the index of the ULCC of the transmission of the physical uplink link shared channels (PUSCH) for correspondence.
46, according to the method in embodiment 32-45 described in any embodiment, wherein, n dMRSfrom for transmit the cyclic shift of demodulated reference signal (DMRS) field nearest down link control information (DCI) form 0 of the transmission block be associated mapped with corresponding physical uplink link shared channels (PUSCH).
47, according to the method in embodiment 32-46 described in any embodiment, wherein, be the spreading factor size for PHICH modulation, be defined as the function of Cyclic Prefix.
48, according to the method in embodiment 32-47 described in any embodiment, wherein, it is minimal physical Resource Block (RB) index in first time slot of the PUSCH transmission of correspondence.
49, according to the method in embodiment 32-48 described in any embodiment, wherein, the quantity of the PHICH group configured by higher level.
50, according to the method in embodiment 32-49 described in any embodiment, wherein, N cCrepresent the quantity being associated with the ULCC of single down link (DL) CC.
51, according to the method in embodiment 32-50 described in any embodiment, wherein, or n cIone or be combined through to determine below: use the specific cell-radio network temporary identifier (C-RNTI) of wireless transmitter/receiver unit (WTRU) to decode to read down link control information (DCI) form 0 of authorizing physical uplink link shared channels (PUSCH) to transmit to physical downlink control channel (PDCCH) on the DLCC be associated.
52, according to the method in embodiment 32-51 described in any embodiment, wherein, PHICH configuration parameter N g=2.
53, according to the method in embodiment 32-52 described in any embodiment, wherein, PHICH configuration parameter N gvalue depend on the quantity of the ULCC of polymerization.
54, according to the method in embodiment 32-53 described in any embodiment, wherein, the quantity that Physical Hybrid ARQ Indicator channel (PHICH) is organized is the function of DL bandwidth.
55, according to the method in embodiment 32-54 described in any embodiment, wherein, the maximum quantity of the component carrier (CC) of the supported polymerization when DL bandwidth is 6 Resource Block (RB) is 2.
56, according to the method in embodiment 32-55 described in any embodiment, wherein, the maximum quantity of the component carrier (CC) of the supported polymerization when DL bandwidth is 12 Resource Block (RB) is 4.
57, according to the method in embodiment 32-56 described in any embodiment, wherein, PHICH configuration parameter N g=1/4.
58, according to the method in embodiment 32-57 described in any embodiment, wherein, PHICH group can be used for the bandwidth (BW) up to 25 RB, and this PHICH group can not be divided or be exclusively used in different carrier waves.
59, according to the method in embodiment 32-58 described in any embodiment, also comprise and divide total Physical Hybrid ARQ Indicator channel (PHICH) resource.
60, according to the method in embodiment 32-59 described in any embodiment, also comprising Physical Hybrid ARQ Indicator channel (PHICH) channel distribution is at least one part.
61, according to the method in embodiment 32-60 described in any embodiment, wherein, each of at least one part is exclusively used in one-component carrier wave (CC).
62, according to the method in embodiment 32-61 described in any embodiment, wherein, bandwidth is 5MHz.
63, according to the method in embodiment 32-62 described in any embodiment, wherein, division comprises division or combination physics hybrid ARQ indicator channel (PHICH) resource, channel, group or its combination in any.
64, according to the method in embodiment 32-63 described in any embodiment, wherein, each part can be arranged to or be assigned to specific carriers.
65, according to the method in embodiment 32-64 described in any embodiment, wherein, more than one Resource Block (RB) is distributed for each component carrier (CC) to wireless transmitter/receiver unit (WTRU).
66, according to the method in embodiment 32-65 described in any embodiment, each physics RB(PRB being also included in each Physical Hybrid ARQ Indicator channel (PHICH) resource and transmitting for each physical uplink link shared channels (PUSCH)) between map one to one.
67, according to the method in embodiment 32-66 described in any embodiment, wherein, when there is Physical Hybrid ARQ Indicator channel (PHICH) resource contention, in systems in which can untapped PHICH resource through amendment for current PHICH mapping scheme.
68, according to the method in embodiment 32-67 described in any embodiment, wherein, the method have been applied in LTE.
69, according to the method in embodiment 32-68 described in any embodiment, wherein, be distributed in the upper each user of each UL component carrier (CC) quantity that Resource Block (RB) quantitative aspects is more than or equal to the ULCC of polymerization.
70, according to the method in embodiment 32-69 described in any embodiment, wherein L rBs>=N cC, wherein:
N cCrepresent the quantity being associated with the ULCC of the polymerization of single DLCC, and
L rBsfor the continuous of each CC or the discontinuous length being assigned to the Resource Block of WTRU.
71, according to the method in embodiment 32-70 described in any embodiment, also mapping equation is comprised.
72, according to the method in embodiment 32-71 described in any embodiment, wherein, mapping equation uses following equation:
73, according to the method in embodiment 32-72 described in any embodiment, wherein, it is minimal physical Resource Block (PRB) index in first time slot transmitted at the physical uplink link shared channels (PUSCH) of correspondence.
74, according to the method in embodiment 32-73 described in any embodiment, wherein, Δ ibe applicable to the relevant skew of component carrier (CC).
75, according to the method in embodiment 32-74 described in any embodiment, also comprise and Physical Resource Block (PRB) index in the Resource Block of the continuous of wireless transmitter/receiver unit (WTRU) or discontinuous distribution is associated from different component carrier (CC), to avoid Physical Hybrid ARQ Indicator channel (PHICH) resource contention.
76, according to the method in embodiment 32-75 described in any embodiment, wherein, the PRB index in the Resource Block of the continuous dispensing of WTRU is performed uniquely from associating between different CC.
77, according to the method in embodiment 32-76 described in any embodiment, wherein, parameter Δ ithe value of getting is Δ i∈ 0,1 ..., N rB-1}.
78, according to the method in embodiment 32-77 described in any embodiment, wherein, parameter Δ ibe configured by higher level signaling and be transferred to wireless transmitter/receiver unit (WTRU).
79, according to the method in embodiment 32-78 described in any embodiment, wherein, wireless transmitter/receiver unit (WTRU) configures according to predetermined mapping ruler identification parameter Δ based on its Physical Resource Block (PRB) i.
80, according to the method in embodiment 32-79 described in any embodiment, wherein, mapping ruler also comprises the PRB index in being authorized by the UL be assigned with on of UL component carrier (CC) in order and is associated with the sequence of Physical Hybrid ARQ Indicator channel (PHICH) resource, then uses PHICH resource to transmit and feeds back corresponding to the mixed automatic repeat request (HARQ) of multiple ULCC.
81, according to the method in embodiment 32-80 described in any embodiment, also comprise and the PHICH resource be associated with the PUSCH transmission on ULCC being associated with from minimum PRB index in the one group of PRB distributing to WTRU.
82, according to the method in embodiment 32-81 described in any embodiment, wherein, in the system of ULCC with multiple polymerization, multiple Resource Block (RB) is distributed at each component carrier (CC) to multiple user.
83, according to the method in embodiment 32-82 described in any embodiment, wherein, a CC distributes multiple discontinuous RB to user, the 2nd CC distributes multiple continuous RB to user.
84, according to the method in embodiment 32-83 described in any embodiment, wherein, wireless transmitter/receiver unit (WTRU) receives and feeds back the mixed automatic repeat request (HARQ) of Physical Hybrid ARQ Indicator channel (PHICH) resource, and this resource is associated with a RB and the 2nd RB of two transmission blocks for transmitting on two specific CC.
85, according to the method in embodiment 32-84 described in any embodiment, the method is also comprised based on the network configuration scheme avoiding Physical Hybrid ARQ Indicator channel (PHICH) resource contention.
86, according to the method in embodiment 32-85 described in any embodiment, wherein, when there is Physical Hybrid ARQ Indicator channel (PHICH) resource contention, wireless transmitter/receiver unit (WTRU) receives and corresponds to all ULCC(except in the upper transmission of physical downlink control channel (PDCCH)) mixed automatic repeat request (HARQ) feedback.
87, according to the method in embodiment 32-86 described in any embodiment, wherein, self adaptation operator scheme is exclusively used in multiple HARQ process, and only in HARQ process one can based on non-self-adapting operator scheme.
88, according to the method in embodiment 32-87 described in any embodiment, wherein, when LTE and LTE-AWTRU shares PHICH resource, only can PHICH resource be assigned to LTEWTRU.
89, according to the method in embodiment 32-88 described in any embodiment, wherein, wireless transmitter/receiver unit (WTRU) comprises mixed automatic repeat request (HARQ) entity, and it maintains multiple parallel HARQ process.
90, according to the method in embodiment 32-89 described in any embodiment, mixed automatic repeat request (HARQ) process specific is in each UL component carrier (CC).
91, according to the method in embodiment 32-90 described in any embodiment, wherein, wireless transmitter/receiver unit (WTRU) first expects to receive search DL component carrier (CC) that the scheduled transmission time interval (TTI) of feedback corresponding to any ULCC transmitted initial uplink mandate carried out to physical downlink control channel (PDCCH) down link control information (DCI) form 0/0x at the mixed automatic repeat request at WTRU place (HARQ) entity.
92, according to the method in embodiment 32-91 described in any embodiment, wherein, when detect for component carrier (CC) be addressed to the cell-radio network temporary identifier (C-RNTI) of wireless transmitter/receiver unit (WTRU) UL authorize, there is the HARQ process of correspondence transmitted in mixed automatic repeat request (HARQ) entity identification, then by received response (ACK)/negative response (NACK) information router to suitable HARQ process.
93, according to the method in embodiment 32-92 described in any embodiment, wherein, when detect not for given component carrier (CC) be addressed to physical downlink control channel (PDCCH) down link control information (DCI) the form 0/0x of the cell-radio network temporary identifier (C-RNTI) of wireless transmitter/receiver unit (WTRU), the method that mixed automatic repeat request (HARQ) entity performs also comprises the feedback information attempting obtaining transmission in Physical Hybrid ARQ Indicator channel (PHICH).
94, according to the method in embodiment 32-93 described in any embodiment, also comprise and HARQ feedback is routed to suitable HARQ process.
95, according to the method in embodiment 32-94 described in any embodiment, wherein, C-RNTI is semi-continuous scheduling C-RNTI.
96, according to the method in embodiment 32-95 described in any embodiment, wherein, for downlink subframe, transmission block is transmitted in physical uplink link shared channels (PUSCH) subframe be associated, the method is also included in ACK and when Physical Hybrid ARQ Indicator channel (PHICH) is above decoded, ACK is delivered to higher level in the burst.
97, according to the method in embodiment 32-96 described in any embodiment, be also included in NACK decoded on PHICH in subframe NACK is delivered to higher level.
98, according to the method in embodiment 32-97 described in any embodiment, be also included in and detect when there is no PHICH in subframe, the instruction that there is not PHICH is delivered to higher level.
99, according to the method in embodiment 32-98 described in any embodiment, wherein, mixed automatic repeat request (HARQ) operation comprises wireless transmitter/receiver unit (WTRU) and evolved node B(eNB) process.
100, according to the method in embodiment 32-99 described in any embodiment, WTRU is also comprised based on the information determination parameter n in nearest mandate dMRS, wherein, authorize and comprise the appointment that double persistent resources is distributed.
101, according to the method in embodiment 32-100 described in any embodiment, the WTRU also comprising the common scheduling that scheduler is determined on multiple ULCC is assigned different first resource blocks, as the part of initial semi-continuous scheduling PUSCH.
102, according to the method in embodiment 32-101 described in any embodiment, also comprise the PUSCH transmission for being associated with accidental access response mandate, the WTRU that scheduler configures the common scheduling on multiple ULCC thus WTRU is assigned different first resource blocks, as the part of accidental access response mandate.
103, a kind of wireless transmitter/receiver unit (WTRU), is configured to the part of the method for any embodiment at least performing above-described embodiment.
104, a kind of e Node B (eNB), is configured to the part of the method for any embodiment at least performing embodiment 1-102.
105, a kind of integrated circuit (IC), is configured to the part of the method for any embodiment at least performing embodiment 1-102.
Although characteristic sum element of the present invention is described specifically to combine, but it will be appreciated by those skilled in the art that each feature or element can be used alone when not having further feature and element, or with or the various situations that are not combined with further feature and element under use.In addition, method described herein can be implemented in the computer program, software or the firmware that are performed by all-purpose computer or processor, and wherein said computer program, software or firmware are included in computer-readable medium.The example of computer-readable medium comprises electronic signal (by wired or wireless connection transmission) and computer-readable recording medium.The example of computer-readable recording medium includes but not limited to the light medium of read-only memory (ROM), random-access memory (ram), register, buffer storage, semiconductor memory apparatus, the magnetizing mediums of internal hard drive and moveable magnetic disc and so on, magnet-optical medium and CD-ROM disk and digital versatile disc (DVD) and so on.The processor be associated with software may be used for realizing a radio-frequency (RF) transceiver, to be used in WTRU, UE, terminal, base station, RNC or any host computer.
1., in the method for avoiding feedback channel resources to conflict that base station is implemented, the method comprises:
Determine feedback channel resources conflict; And
Self adaptation feedback channel process is performed for each uplink component carrier with feedback channel resources conflict.
2. method according to claim 1, wherein, feedback channel resources regular inspection really of conflicting looks into the homogeny of the least resource be assigned with in uplink component carrier.
3. method according to claim 1, wherein, non-self-adapting feedback channel process is for having a uplink component carrier of feedback channel resources conflict.
4., at the device for avoiding feedback channel resources to conflict that base station is implemented, this device comprises:
For determining the device that feedback channel resources conflicts; And
For performing the device of self adaptation feedback channel process for each uplink component carrier with feedback channel resources conflict.
5. device according to claim 4, wherein, feedback channel resources regular inspection really of conflicting looks into the homogeny of the least resource be assigned with in uplink component carrier.
6. device according to claim 4, non-self-adapting feedback channel process is for having a uplink component carrier of feedback channel resources conflict.
CN201180005669.4A 2010-01-08 2011-01-07 For the method and apparatus that the channel resource in carrier aggregation maps CN102754381B (en)
US29354010P true 2010-01-08 2010-01-08
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US30772110P true 2010-02-24 2010-02-24
US61/307,721 2010-02-24
PCT/US2011/020458 WO2011085159A2 (en) 2010-01-08 2011-01-07 Method and apparatus for channel resource mapping in carrier aggregation
CN102754381A CN102754381A (en) 2012-10-24
CN102754381B true CN102754381B (en) 2015-11-25
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CN201180005669.4A CN102754381B (en) 2010-01-08 2011-01-07 For the method and apparatus that the channel resource in carrier aggregation maps
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