WO2013063807A1 - Procédé et appareil d'agrégation de porteuses entre les bandes - Google Patents

Procédé et appareil d'agrégation de porteuses entre les bandes Download PDF

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Publication number
WO2013063807A1
WO2013063807A1 PCT/CN2011/081832 CN2011081832W WO2013063807A1 WO 2013063807 A1 WO2013063807 A1 WO 2013063807A1 CN 2011081832 W CN2011081832 W CN 2011081832W WO 2013063807 A1 WO2013063807 A1 WO 2013063807A1
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WIPO (PCT)
Prior art keywords
subframe
prioritized
harq timing
cause
processor
Prior art date
Application number
PCT/CN2011/081832
Other languages
English (en)
Inventor
Jing HAN
Haiming Wang
Chunyan Gao
Erlin Zeng
Wei Bai
Wei Hong
Original Assignee
Renesas Mobile Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renesas Mobile Corporation filed Critical Renesas Mobile Corporation
Priority to PCT/CN2011/081832 priority Critical patent/WO2013063807A1/fr
Publication of WO2013063807A1 publication Critical patent/WO2013063807A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/007—Unequal error protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1848—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/188—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing

Definitions

  • Embodiments of the present invention relate generally to communications technology and, more particularly, to intra-band carrier aggregation (CA) support.
  • CA intra-band carrier aggregation
  • Transmission and reception of radio signals from an example access point to a mobile terminal may be multiplexed in a time domain, such as by using time division duplex (TDD).
  • TDD time division duplex
  • DL downlink
  • UL uplink
  • TDD may function in an unpaired frequency spectrum.
  • LTE long term evolution
  • LTE-A LTE advanced
  • a transmitted signal may be organized into a frame structure, for example, ten equally-sized subframes 0-9 of length 1 millisecond (ms) per radio frame.
  • a subframe is either a UL subframe or a DL subframe.
  • TDD configurations there are seven different TDD configurations and cover a plurality of UL DL ratios. These TDD configurations are referenced by
  • carrier frequency aggregation allows for different TDD configurations to be aggregated on inter-bands.
  • this is done to allow for the co-existence of a legacy Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system in adjacent bands.
  • TD-SCDMA Time Division Synchronous Code Division Multiple Access
  • hybrid automatic repeat request (HARQ) timing may be selectable and/or adjustable so as to remove and/or solve subframe overlap between TDD configurations. For example and according to some embodiments, in an instance in which a DL or UL subframe is prioritized, then HARQ timing for the overlapped subframe may follow the HARQ timing of the prioritized DL or UL subframe. Alternatively or additionally in some example embodiments, HARQ timing may be redefined in an instance of an overlap.
  • the redefined HARQ timing may include a predetermined offset and/or may use the first available subframe preceding or first available subfranie following the overlap.
  • a mobile terminal may receive HARQ timing instructions in the case of a subframe overlap.
  • a method comprises determining whether a first subframe conflicts with a second subframe.
  • the method of this embodiment may also include determining a prioritized subframe in an instance in which the first subframe conflicts with the second subframe.
  • the method of this embodiment may also include causing HARQ timing for the prioritized subframe to be selected.
  • an apparatus in another embodiment, includes at least one processor and at least one memory including computer program code with the at least one memory and the computer program code being configured, with the at least one processor, to cause the apparatus to at least determine whether a first subframe conflicts with a second subframe.
  • the at least one memoiy and computer program code may also be configured to, with the at least one processor, cause the apparatus to determine a prioritized subframe in an instance in which the first subframe conflicts with the second subframe.
  • the at least one memory and computer program code may also be configured to, with the at least one processor, cause the apparatus to cause HARQ timing for the prioritized subframe to be selected.
  • an apparatus in yet another embodiment, includes means for determining whether a first subframe conflicts with a second subframe.
  • the apparatus of this embodiment may also include means for determining a prioritized subframe in an instance in which the first subframe conflicts with the second subframe.
  • the apparatus of this embodiment may also include means for causing HARQ timing for the prioritized subframe to be selected,
  • a method comprises determining whether a first subframe conflicts with a second subframe.
  • the method of this embodiment may also include determining a prioritized subframe in an instance in which the first subframe conflicts with the second subframe.
  • the method of this embodiment may also include causing HARQ timing for the prioritized subframe to be adjusted using a predetermined offset.
  • an apparatus in another embodiment, includes at least one processor and at least one memory including computer program code with the at least one memory and the computer program code being configured, with the at least one processor, to cause the apparatus to at least determine whether a first subframe conflicts with a second subframe.
  • the at least one memory and computer program code may also be configured to, with the at least one processor, cause the apparatus to determine a prioritized subframe in an instance in which the first subframe conflicts with the second subframe.
  • the at least one memory and computer program code may also be configured to, with the at least one processor, cause the apparatus to cause HARQ timing for the prioritized subframe to be adjusted using a predetermined offset.
  • a computer program product may be provided that includes at least one non-transitory computer-readable storage medium having computer- readable program instruction stored therein with the computer-readable program instructions including program instructions configured to determine whether a first subframe conflicts with a second subframe.
  • the computer-readable program instructions may also include program instructions configured to determine a prioritized subframe in an instance in which the first subframe conflicts with the second subframe.
  • the computer-readable program instructions may also include program instructions configured to cause HARQ timing for the prioritized subframe to be adjusted using a predetermined offset.
  • an apparatus is provided that includes means for determining whether a first subframe conflicts with a second subframe.
  • the apparatus of this embodiment may also include means for determining a prioritized subframe in an instance in which the first subframe conflicts with the second subframe.
  • the apparatus of this embodiment may also include means for causing HARQ timing for the prioritized subframe to be adjusted using a predetermined offset.
  • Figure 1 is a schematic representation of a system having a mobile terminal that may experience resource allocation modification and that may benefit from an embodiment of the present invention
  • FIG. 2 is a block diagram of an apparatus that may be embodied by a mobile terminal in accordance with one embodiment of the present invention
  • Figure 3 is a flow chart illustrating operations performed in accordance with one embodiment of the present invention.
  • FIGS 4, 5a and 5b illustrate example TDD configurations and example operations performed in accordance with one embodiment of the present invention.
  • circuitry refers to all of the following:
  • circuits such as a microprocessor(s) or a portion of a microprocessor(s), that
  • circuitry applies to all uses of this term in this application, including in any claims.
  • circuitry would also cover an implementation of merely a processor (or multiple processors) or portion of a processor and its (or their) accompanying software and/or firmware.
  • circuitry would also cover, for example and if applicable to the particular claim element, a baseband integrated circuit or application specific integrated circuit for a mobile phone or a similar integrated circuit in server, a cellular network device, or other network device.
  • a method, apparatus and computer program product of an example embodiment of the present invention are configured to determine instances in which there is an overlap between subframes in a radio frame, for example in different TDD configurations.
  • An example subframe conflict exists between subframe 3 of TDD configuration # 2 which is a DL subframe and subframe 3 of TDD configuration # 4 which is a UL subframe, See for example Figure 4.
  • the systems and methods as disclosed herein may be configured to determine whether the overlapping subframes should be interpreted as a UL or DL subframe.
  • an overlap may be reconciled by selecting the UL or DL subframe that is prioritized and applying the HARQ timing that applies to the selected subframe based on its TDD configuration. For example, in an instance in which UL data scheduling or UL feedback is requested, then the UL subframe would be prioritized over an overlapping DL subframe.
  • the DL subframe is prioritized. If either a UL or DL subframe is prioritized, then HARQ timing for the prioritized subframe may be used to overcome the overlap. For example, the HARQ timing for the selected subframe may follow a particular TDD configurations timing. Referring to Figure 4, in subframe 3, the UL subframe in configuration #4 is prioritized and thus the HARQ timing for configuration #4 is used (e.g. the corresponding UL grant will be transmitted in DL subframe 9 in previous frame, and corresponding Physical HARQ Indicator Channel (PHICH) will be transmitted in subframe 9).
  • PHICH Physical HARQ Indicator Channel
  • new HARQ timing may be defined that is different from the defined HARQ timing of the TDD
  • the HARQ timing may be adjusted based on a predetermined offset and/or may be selected based on a next available subframe or available preceding subframe.
  • HARQ timing instructions may be received from a network entity, such as from an access point.
  • Figure 1 which includes a first communication device (e.g., mobile terminal 10) that is capable of
  • an access point 12 such as a base station, a Node B, an evolved Node B (eNB), serving cell or other access point
  • a network 14 e.g., a core network
  • the network may be configured in accordance with LTE or LTE-A
  • other networks may support the method, apparatus and computer program product of embodiments of the present invention including those configured in accordance with wideband code division multiple access (W- CDMA), CDMA2000, global system for mobile communications (GSM), general packet radio service (GPRS) and/or the like.
  • W- CDMA wideband code division multiple access
  • CDMA2000 Code Division multiple access
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • the network 14 may include a collection of various different nodes, devices or functions that may be in communication with each other via corresponding wired and/or wireless interfaces.
  • the network may include one or more cells, including access point 12, each of which may serve a respective coverage area.
  • the serving cell and the neighbor cells could be, for example, part of one or more cellular or mobile networks or public land mobile networks (PLMNs).
  • PLMNs public land mobile networks
  • other devices such as processing devices (e.g., personal computers, server computers or the like) may be coupled to the mobile terminal 10 and/or other
  • a communication device such as the mobile terminal 10 (also known as user equipment (UE)), may be in communication with other communication devices or other devices via the access point 12 and, in turn, the network 14.
  • the communication device may include an antenna for transmitting signals to and for receiving signals from a serving cell.
  • a serving cell includes, but is not limited to a primary serving cell (PCell) and other serving cells such as secondary serving cells (SCell) that may be operating on an access point, such as access point 12.
  • PCell primary serving cell
  • SCell secondary serving cells
  • a candidate cell, target cell, neighbor cell and/or the like may also be used herein, and that includes a cell that is not currently a serving cell, but may become a serving cell in the future.
  • a PCell which may be embodied by an access point, generally includes, but is not limited to, a cell that is configured to perform initial establishment procedures, security procedures, system information (SI) acquisition and change monitoring procedures on the broadcast channel (BCCH) or data channel (PDCCH), and paging.
  • the SCell which may be embodied by a remote radio head (RRH) and is configured to provide additional radio resources to the PCell.
  • a "primary band" is the band that is indicated by the serving cell as the band of a serving carrier frequency.
  • the secondary band is the band that is indicated by the serving cell as an additional band (e.g. in addition to primary band), that allows a mobile terminal radio frequency that is supported by the secondary band to also camp on the cell.
  • the mobile terminal 10 may be a mobile
  • the mobile terminal 10 may include one or more processors that may define processing circuitry either alone or in combination with one or more memories.
  • the processing circuitry may utilize instructions stored in the memory to cause the mobile terminal 10 to operate in a particular way or execute specific functionality when the instructions are executed by the one or more processors.
  • the mobile terminal 10 may also include communication circuitry and corresponding hardware/software to enable communication with other devices and/or the network 14.
  • the mobile terminal 10 and/or the access point 12 may be embodied as or otherwise include an apparatus 20 as generically represented by the block diagram of Figure 2. While the apparatus 20 may be employed, for example, by a mobile terminal 10 or an access point 12, it should be noted that the components, devices or elements described below may not be mandatory and thus some may be omitted in certain embodiments. Additionally, some embodiments may include further or different components, devices or elements beyond those shown and described herein.
  • the apparatus 20 may include or otherwise be in
  • the processing circuitry may be configured to perform data processing, application execution and/or other processing and management services according to an example embodiment of the present invention.
  • the apparatus or the processing circuitry may be embodied as a chip or chip set.
  • the apparatus or the processing circuitry may comprise one or more physical packages (e.g., chips) including materials, components and/or wires on a structural assembly (e.g., a baseboard).
  • the structural assembly may provide physical strength, conservation of size, and/or limitation of electrical interaction for component circuitry included thereon.
  • the apparatus or the processing circuitry may therefore, in some cases, be configured to implement an embodiment of the present invention on a single chip or as a single "system on a chip.”
  • a chip or chipset may constitute means for performing one or more operations for providing the functionalities described herein.
  • the processing circuitry 22 may include a processor 24 and memory 28 that may be in communication with or otherwise control a communication interface 26 and, in some cases, a user interface 30.
  • the processing circuitry may be embodied as a circuit chip (e.g., an integrated circuit chip) configured (e.g., with hardware, software or a combination of hardware and software) to perform operations described herein.
  • the processing circuitry may be embodied as a portion of a mobile computing device or other mobile terminal.
  • the user interface 30 may be in communication with the processing circuitry 22 to receive an indication of a user input at the user interface and/or to provide an audible, visual, mechanical or other output to the user.
  • the user interface may include, for example, a keyboard, a mouse, a joystick, a display, a touch screen, a microphone, a speaker, and/or other input/output mechanisms.
  • the apparatus 20 need not always include a user interface. For example, in instances in which the apparatus is embodied as an access point 12, the apparatus may not include a user interface. As such, the user interface is shown in dashed lines in Figure 2.
  • the communication interface 26 may include one or more interface mechanisms for enabling communication with other devices and/or networks.
  • the communication interface may be any means such as a device or circuitry embodied in either hardware, or a combination of hardware and software that is configured to receive and/or transmit data from/to a network 14 and/or any other device or module in communication with the processing circuitry 22, such as between the mobile terminal 10 and the access point 12.
  • the communication interface may include, for example, an antenna (or multiple antennas) and supporting hardware and/or software for enabling communications with a wireless
  • communication network and/or a communication modem or other hardware/software for supporting communication via cable, digital subscriber line (DSL), universal serial bus (USB), Ethernet or other methods.
  • DSL digital subscriber line
  • USB universal serial bus
  • the memory 28 may include one or more non-transitory memory devices such as, for example, volatile and/or non-volatile memory that may be either fixed or removable.
  • the memory may be configured to store information, data, applications, instructions or the like for enabling the apparatus 20 to carry out various functions in accordance with example embodiments of the present invention.
  • the memory could be configured to buffer input data for processing by the processor 24.
  • the memory could be configured to store instructions for execution by the processor.
  • the memory may include one of a plurality of databases that may store a variety of files, contents or data sets.
  • applications may be stored for execution by the processor in order to carry out the functionality associated with each respective application.
  • the memory may be in communication with the processor via a bus for passing information among components of the apparatus.
  • the processor 24 may be embodied in a number of different ways.
  • the processor may be embodied as various processing means such as one or more of a
  • the processor may be configured to execute instructions stored in the memory 28 or otherwise accessible to the processor.
  • the processor may represent an entity (e.g., physically embodied in circuitry - in the form of processing circuitry 22) capable of performing operations according to embodiments of the present invention while configured accordingly.
  • the processor may be specifically configured hardware for conducting the operations described herein.
  • the instructions may specifically configure the processor to perform the operations described herein.
  • FIG 3 is a flowchart illustrating the operations performed by a method, apparatus and computer program product, such as apparatus 20 of Figure 2, from the perspective of a mobile terminal 10 in accordance with one embodiment of the present invention is illustrated.
  • each block of the flowchart, and combinations of blocks in the flowchart may be implemented by various means, such as hardware, firmware, processor, circuitry and/or other device associated with execution of software including one or more computer program instructions.
  • one or more of the procedures described above may be embodied by computer program instructions.
  • the computer program instructions which embody the procedures described above may be stored by a memory device 28 of an apparatus employing an embodiment of the present invention and executed by a processor 24 in the apparatus.
  • any such computer program instructions may be loaded onto a computer or other programmable apparatus (e.g., hardware) to produce a machine, such that the resulting computer or other programmable apparatus provides for implementation of the functions specified in the flowchart block(s).
  • These computer program instructions may also be stored in a non-transitory computer-readable storage memory that may direct a computer or other programmable apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage memory produce an article of manufacture, the execution of which implements the function specified in the flowchart block(s).
  • the computer program instructions may also be loaded onto a computer or other programmable apparatus to cause a series of operations to be performed on the computer or other programmable apparatus to produce a computer- implemented process such that the instructions which execute on the computer or other programmable apparatus provide operations for implementing the functions specified in the flowchart block(s).
  • the operations of Figure 3 when executed, convert a computer or processing circuitry into a particular machine configured to perform an example embodiment of the present invention.
  • the operations of Figure 3 define an algorithm for configuring a computer or processing circuitry 22, e.g., processor, to perform an example embodiment.
  • a general purpose computer may be provided with an instance of the processor which performs the algorithm of Figure 3 to transform the general purpose computer into a particular machine configured to perform an example embodiment.
  • blocks of the flowcharts support combinations of means for performing the specified functions and combinations of operations for performing the specified functions. It will also be understood that one or more blocks of the flowchart, and combinations of blocks in the flowchart, can be implemented by special purpose hardware-based computer systems which perform the specified functions, or combinations of special purpose hardware and computer instructions.
  • the operations of a method, apparatus and computer program product are configured to determine HARQ timing for an overlapped subframe.
  • the apparatus 20 that is embodied, for example, by the mobile terminal 10 may include means, such as the processing circuitry 22, the processor 24 or the like, for determining whether a subframe in a first TDD configuration conflicts with a subframe in a second TDD configuration.
  • a conflict exists in an instance in which a first subframe is a UL subframe and a second subframe is a DL subframe.
  • conflicts exist in subframes 3 and 7 between TDD configuration #2 and TDD configuration #4.
  • the apparatus 20 that is embodied, for example, by the mobile terminal 10 may include means, such as the processing circuitry 22, the processor 24 or the like, for determining whether a subframe in the first TDD configuration or a subframe in a second TDD configuration is prioritized on a component carrier (CC), for example any of the seven TDD configurations may be compared in operation 34.
  • CC component carrier
  • the mobile terminal 10 such as by the processing circuitry 22, the processor 24 or the like, will regard the overlapped subframe as UL subframe.
  • the TDD configuration with the UL subframe may be prioritized.
  • the mobile terminal 10, such as by the processing circuitry 22, the processor 24 or the like may determine an overlapped subframe to be a DL subframe and in some example embodiments may monitor DL control signaling.
  • conflict, overlap or the like may be used to indicate a first subframe and a second subframe that somehow differ, for example with one being a UL subframe and the other being a DL subframe.
  • the UL subframe, which is the prioritized subframe, of configuration #1 in subframe 8 is considered prioritized.
  • the UL feedback for subframe 4 is configured to be transmitted in subframe 8
  • UL subframe in subframe 8 of configuration #1 may also be considered to be prioritized. In either case the UL subframe is the prioritized subframe. Otherwise, if there is no UL transmission in subframe 8, the DL subframe in subframe 8 then is the prioritized subframe.
  • the apparatus 20 that is embodied, for example, by the mobile terminal 10 may include means, such as the processing circuitry 22, the processor 24 or the like, for causing HARQ timing to follow the TDD configuration of the subframe that is prioritized.
  • HARQ timing may include, but is not limited to the timing between UL grant and Physical Uplink Shared Channel (PUSCH); timing between Physical Downlink Shared Channel (PDSCH) and Physical Uplink Control Channel (PUCCH) feedback; timing between PUSCH and PHICH feedback
  • the mobile terminal 10 may check the UL grant for the UL subframe in subframe 3 according to UL grant timing of subframe 3 in TDD configuration 4 to determine if there is corresponding UL scheduling in subframe 3.
  • the mobile terminal 10, such as by the processing circuitry 22, the processor 24 or the like may also check DL feedback timing for UL subframe in subframe 3 according to UL feedback timing of subframe 3 in TDD configuration 4.
  • the UL feedback timing of DL subframe in subframe 3 of configuration # 2 as a result may depend on the corresponding timing of TDD configuration 2, More specifically, the mobile terminal 10, such as by the processing circuitry 22, the processor 24 or the like may check UL feedback for DL subframe in subframe 3 according to UL feedback timing of subframe 3 in TDD configuration 2. Thus allowing for the UL feedback that may have been received in subframe 3 to be received at a later subframe.
  • the apparatus 20 that is embodied, for example, by the mobile terminal 10 may include means, such as the processing circuitry 22, the processor 24 or the like, for causing HARQ timing for the subframe that is prioritized to be adjusted using a predetermined offset.
  • the HARQ timing may use a predetermined offset such as a 5ms offset and/or may use the first available subframe preceding or first available subframe following the overlap.
  • HARQ timing might be adjusted when a UL grant and/or DL feedback is missing because of
  • corresponding UL subframe is prioritized but not a DL subframe.
  • the HARQ timing of prioritized subframe may be redefined if existing HARQ timing may not be reused because of a conflict.
  • a new UL grant timing may be determined. For example, a UL grant could be sent in subframe 1 instead of subframe 3, which is the first DL subframe before subframe 3.
  • the mobile terminal 10, such as by the processing circuitry 22, the processor 24 or the like may be triggered implicitly, e.g., based on the detection of an UL grant for the corresponding overlapped DL subframe.
  • this may trigger cause an alternate HARQ timing for UL, for example, the mobile terminal 10, may try to detect the PHICH in subframe 9 instead of subframe 8 as originally indicated.
  • the apparatus 20 that is embodied, for example, by the mobile terminal 10 may include means, such as the processing circuitry 22, the processor 24 or the like, for causing HARQ timing to be adjusted based on received HARQ timing instructions.
  • HARQ timing could be explicitly indicated in control signaling (e.g. L1/L2/L3) received from a network entity such as access point 12.
  • control signaling e.g. L1/L2/L3
  • PHICH timing of UL subframe 2 in TDD configuration#3 may be indicated in UL grant in DL subframe #4.
  • the PHICH timing may be 5ms.
  • an indication that the PHICH will be delayed to a next available subframe may be received.
  • the PHICH timing of UL subframe 2 may follow the 5ms or if that is not possible following the predefined delaying rule, the nearest DL subframe may be used, for example transmit in DL subframe 8.
  • either of operation 36 or operation 38 may be selected to address a conflict.
  • both of operation 36 and 38 may be used.
  • the mobile terminal 10, such as by the processing circuitry 22, the processor 24 or the like may determine a preferred operation based on a number of conflicts, timing or the like and then may apply operation 36 and in instances in which applying operation causes a conflict operation 38 may be invoked.
  • either of operations 36, 38 or 40 may be selected to address a conflict.
  • a combination of some or all of operations 36, 38 and/or 40 may be selected to address a conflict.
  • the combinations include, but are not limited to the combination of: operation 36 (e.g. reuse HARQ timing of TDD configuration that contains a prioritized subframe) and operation 38 (e.g. adjust HARQ timing according to offset or rule).
  • operation 36 may be used to determine the HARQ timing according to corresponding TDD configuration.
  • the mobile terminal 10 such as by the processing circuitry 22, the processor 24 or the like may determine that the HARQ timing could not be used since as a result, a corresponding subframe is omitted. In such an instance, the mobile terminal 10 may then use operation 38.
  • operations 36 and 40 may be combined. For example in an instance in which a HARQ timing is not received from a network entity, such as access point 12, then operation 36 may be used. Otherwise if HARQ timing indication is received, then operation 40 is selected.
  • the systems and methods as described herein may be configured to be used with all TDD DL/UL configurations combinations, which for example may advantageously provide a universal solution.
  • Such solutions described herein may also be used in related inter-frequency CA support with regard to other communications methods such as frequency division duplex.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé, un appareil et un produit programme d'ordinateur destinés à corriger dynamiquement des interférences montantes et descendantes dans une agrégation de porteuses TDD entre les bandes. Selon l'invention, le procédé comprend la détermination du fait qu'une première sous-trame entre en conflit avec une seconde sous-trame. Le procédé comprend en outre la détermination d'une sous-trame prioritaire dans le cas où la première sous-trame entre en conflit avec la seconde sous-trame. Le procédé prévoit également la sélection d'un calendrier HARQ pour la sous-trame prioritaire.
PCT/CN2011/081832 2011-11-04 2011-11-04 Procédé et appareil d'agrégation de porteuses entre les bandes WO2013063807A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015020607A1 (fr) * 2013-08-09 2015-02-12 Telefonaktiebolaget L M Ericsson (Publ) Première et seconde stations de base, et procédés exécutés dans ceux-ci

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CN101800633A (zh) * 2009-02-06 2010-08-11 中国移动通信集团公司 一种重复传输ack/nack的控制方法和用户设备
CN101908954A (zh) * 2009-06-03 2010-12-08 中兴通讯股份有限公司 一种解决中继节点上行传输冲突的方法及装置

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN101800633A (zh) * 2009-02-06 2010-08-11 中国移动通信集团公司 一种重复传输ack/nack的控制方法和用户设备
CN101908954A (zh) * 2009-06-03 2010-12-08 中兴通讯股份有限公司 一种解决中继节点上行传输冲突的方法及装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015020607A1 (fr) * 2013-08-09 2015-02-12 Telefonaktiebolaget L M Ericsson (Publ) Première et seconde stations de base, et procédés exécutés dans ceux-ci
RU2632211C2 (ru) * 2013-08-09 2017-10-03 Телефонактиеболагет Л М Эрикссон (Пабл) Первая и вторая базовые станции и способы, выполняемые в них
US9860907B2 (en) 2013-08-09 2018-01-02 Telefonaktiebolaget Lm Ericsson (Publ) First and second base stations and methods performed therein

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