WO2013117011A1 - Appareils et procédés pour signalisation d'ordonnancement de groupages - Google Patents

Appareils et procédés pour signalisation d'ordonnancement de groupages Download PDF

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Publication number
WO2013117011A1
WO2013117011A1 PCT/CN2012/071031 CN2012071031W WO2013117011A1 WO 2013117011 A1 WO2013117011 A1 WO 2013117011A1 CN 2012071031 W CN2012071031 W CN 2012071031W WO 2013117011 A1 WO2013117011 A1 WO 2013117011A1
Authority
WO
WIPO (PCT)
Prior art keywords
downlink control
control information
information message
radio resources
component carrier
Prior art date
Application number
PCT/CN2012/071031
Other languages
English (en)
Inventor
Jing HAN
Erlin Zeng
Wei Bai
Chunyan Gao
Haiming Wang
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/CN2012/071031 priority Critical patent/WO2013117011A1/fr
Publication of WO2013117011A1 publication Critical patent/WO2013117011A1/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
    • H04L5/0001—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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the exemplary and non-limiting embodiments of this invention relate generally to wireless communication systems, methods, devices and computer programs, and more specifically relate to signaling multiple resource assignments or schedules into a single downlink control information message.
  • the future release 11 is expected to support inter-band carrier aggregation for at least TDD downlink, to include the case where the different bands have different UL/DL configurations.
  • RP-091440 by Nokia entitled CARRIER AGGREGATION FOR LTE [3 GPP TSG RAN#46; Sanya, P.R. China; 1-4 December 2009] and RP-110451 by Nokia and Nokia Siemens Networks entitled LTE CARRIER AGGREGATION ENHANCEMENTS [3 GPP TSG RAN#51; Kansas City, USA; 15-18 March 2011]
  • the primary component carrier or PCell is scheduling the secondary component carrier or SCell.
  • the UL/DL configuration tells whether a given subframe is DL or UL as shown by example at Figures 1 A-B.
  • a subframe #4, #7, #8, #9 cannot be scheduled in the SCell using cross carrier scheduling from the PCell since those subframes for the PCell configuration #0 are all UL subframes.
  • the switching subframes denoted as "S" in Figures 1A-B are downlink.
  • Time domain bundling scheduling provides a promising way to avoid wasting radio resources due to inefficient scheduling which is inherent in the Figure 1A example.
  • multiple DL subframes may be scheduled by one PDCCH.
  • Time domain bundling being actively considered for reducing the PDCCH overhead; see for example document Rl-112427 by NTT and Docomo entitled VIEWS ON
  • Figure 1 A illustrates one example of how scheduling bundling can work for the Figure 1A example so that subframe #4, #7, #8 and #9 in the SCell can be scheduled from the PCell.
  • a PDCCH in subframe #1 on the PDCCH can schedule subframe #1 and #4 in the SCell
  • a PDCCH in subframe #6 of the PCell could schedule subframe #6, #7, #8, #9 in the SCell.
  • all the DL subframes in the scheduled SCell could be scheduled by the PCell in which the scheduling information is sent, even though the TDD configurations on these two cells are different.
  • a method comprising: indicating in a downlink control information message which N radio resources on a second component carrier are being scheduled, where N is an integer greater than one; and sending the downlink control information message on a first com onent carrier to schedule the plurality of radio resources.
  • an apparatus comprising at least one processor and at least one memory storing a computer program.
  • the at least one memory with the computer program is configured with the at least one processor to cause the apparatus to at least: indicate in a downlink control information message which N radio resources on a second component carrier are being scheduled, where N is an integer greater than one; and send the downlink control information message on a first component carrier to schedule the plurality of radio resources.
  • a computer readable memory tangibly storing a computer program executable by at least one processor for causing an apparatus to: indicate in a downlink control information message which N radio resources on a second component carrier are being scheduled, where N is an integer greater than one; and send the downlink control information message on a first component carrier to schedule the plurality of radio resources.
  • an apparatus comprising: scheduling means for indicating in a downlink control information message which N radio resources on a second component carrier are being scheduled, where N is an integer greater than one; and sending means for sending the downlink control information message on a first component carrier to schedule the plurality of radio resources.
  • Figure 1A is a schematic timing diagram showing scheduling inefficiencies when a PCell on which scheduling allocations are sent is using a different DL UL configuration than a SCell on which the scheduled resources lie, and is an exemplary environment in which these teachings can be practiced to advantage,
  • Figure I B is similar to Figure 1 A but showing scheduling bundling to resolve the inefficiencies shown at Figure I B.
  • Figure 2A is a table illustrating bit values and exemplary meanings for signaling associated with scheduling bundling according to an example for one embodiment of these teachings.
  • Figure 2B is a table similar to Figure 2 A but according to an example for a different embodiment of these teachings.
  • Figure 3 is a timing diagram similar to Figure 1 B but further showing results of different offset values signaled to different user equipments according to an exemplary embodiment of these teachings.
  • Figure 4 is a timing diagram similar to Figure IB but illustrating how the value N for the maximum number of downlink subframes that are bundled may be implicitly signaled according to an exemplary embodiment of these teachings.
  • Figure 5 is a logic flow diagram that illustrates from the perspective of the network/eNB the operation of a method, and a result of execution of computer program instructions embodied on a computer readable memory, in accordance with an exemplary embodiment of this invention.
  • FIG. 6 is a simplified block diagram of a UE and an eNB which are exemplary electronic devices suitable for use in practicing the exemplary embodiments of the invention.
  • overlapped subframe is defined as a subframe for which the TDD configurations on the two different carriers have different transmission direction, For example, in Figure IB subframe #4, #6, #7, #8 and #9 are overlapped subframes while all the others are consistent subframes,
  • the size of the bundling window is N.
  • the number of added bits is N.
  • the eNB scheduler may have flexibility to change the size N of the bundling window, or the size of the bundling window may be fixed (for example, by a published technical standard for the wireless system). These added bits indicate which DL subframe is scheduled.
  • the table at Figure 2B illustrates an example of four of the different bit values and their meaning for the case where N bits are added to the PDCCH to indicate which DL subframe(s) are being scheduled.
  • the larger number of bits in this alternative gives a bit greater flexibility than the alternative of Figure 2A.
  • the bit value 0101 for the Figure 2B embodiment can indicate two DL subframes which are being scheduled, the subframe of the PDCCH and the second subframe after then PDCCH, which the Figure 2A embodiment cannot do unless also the first subframe after the PDCCH is also scheduled.
  • a second aspect of these teachings is signaling to indicate for each subframe being scheduled whether it is for a new transmission or for a retransmission.
  • an NDI which indicates whether the resource being allocated is for a new transmission or for a re-transmission (for example, in response to a negative acknowledgement of the original/new transmission).
  • the NDI of the PDCCH is also extended to N bits total. This may be considered as a size N bitmap to indicate for each of the subframes in the bundling window whether the scheduled subframe is to carry a new transmission or a re-transmission.
  • the UE can be signaled via RRC signaling such as when attaching to the cell, or when the SCell is activated for it, or the UE can learn TD scheduling bundling is in use from system information or the master information block.
  • such a relevant wireless standard might state that for inter-band TDD carrier aggregation with different TDD configurations between the PCell and the SCell, for those consistent DL subframes that are followed by an overlapped subframe, time domain bundling scheduling is enabled.
  • subframes #1 and #6 in Figure IB are the only such a consistent DL subframes in that figure.
  • the network configures the different UE's with a specific offset which the network and the UE will use to determine which DL subframe in which to send a PDCCH to that UE.
  • the network will configure different offset value for the different UEs, enabling the network to better distribute the PDCCH load in the time domain.
  • the location of the PDCCH for each of these four UEs is shown at Figure 3.
  • the fifth aspect of these teachings concern the value for N; it is also either explicitly configured by higher layers or in another embodiment is implicitly determined by a predefined rule such as may be stipulated in a wireless standard.
  • the value of N is the size of the bundling window, the maximum number of DL subframes that could be scheduled by one PDCCH.
  • the value of N is in one embodiment predefined in the specification; in another embodiment it is explicitly configured by higher layer signaling such as RRC signaling; and in still another embodiment the value of N is implicitly configured depending on TDD configuration on the scheduling cell PCell in combination with the TDD configuration on the other cell/SCell.
  • the rule may set the value for N as equal to the DL subframe number from the current scheduling subframe to the next consistent DL subframe.
  • TDD configuration #0 on the PCell
  • TDD configuration #4 on the SCell
  • the SCell is configured to be scheduled by that PCell.
  • Embodiments of the invention detailed above provide certain technical effects such as for example it is a design with reasonable signaling bits for time domain bundling scheduling. Additionally these teachings enable independent re-transmission for different DL subframes for time domain bundling scheduling, and also provide functionality for PDCCH load balancing for time domain bundling scheduling.
  • Figure 5 may be performed by the whole eNB, or by one or several components thereof such as a modem.
  • the network indicates in a downlink control information DCI message which N radio resources on a second component carrier are being scheduled, where N is an integer greater than one.
  • the network sends the downlink control information message on a first component carrier to schedule the plurality of radio resources.
  • the first component carrier is the PCell and the second component carrier is the SCell.
  • Block 506 provides that the N radio resources are indicated in the DCI message by a total of either N bits or ceil(log2(N)) bits.
  • Block 508 provides the 3. The method according to claim 1 , in which the downlink control information message further comprises an indication for each of the N radio resources whether data in the respective radio resource is new data or re-transmitted data.
  • Block 510 summarizes the embodiment above in which the first and second component carriers have different uplink/downlink subframe configurations.
  • Block 512 provides that the DCI message is sent in a subframe indicated by a user-equipment specific offset which is specific for a user equipment to which the which N radio resources are allocated by the downlink control information message.
  • a user-equipment specific offset which is specific for a user equipment to which the which N radio resources are allocated by the downlink control information message.
  • the logic flow diagram of Figure 5 may be considered to illustrate the operation of a method, and a result of execution of a computer program stored in a computer readable memory, and a specific manner in which components of an electronic device are configured to cause that electronic device to operate.
  • the various blocks shown in Figure 5 may also be considered as a plurality of coupled logic circuit elements constructed to carry out the associated function(s), or specific result of strings of computer program code stored in a memory.
  • Such blocks and the functions they represent are non-limiting examples, and may be practiced in various components such as integrated circuit chips and modules, and that the exemplary embodiments of this invention may be realized in an apparatus that is embodied as an integrated circuit.
  • the integrated circuit, or circuits may comprise circuitry (as well as possibly firmware) for embodying at least one or more of a data processor or data processors, a digital signal processor or processors, baseband circuitry and radio frequency circuitry that are configurable so as to operate in accordance with the exemplary embodiments of this invention.
  • an eNB 22 is adapted for communication over a wireless link 21 with an apparatus, such as a mobile terminal or UE 20.
  • the eNB 22 may be any access node (including frequency selective repeaters) of any wireless network such as LTE, LTE-A, GSM, GERAN, WCDMA, and the like.
  • the operator network of which the eNB 22 is a part may also include a network control element such as a mobility management entity MME and/or serving gateway SGW 24 or radio network controller RNC which provides connectivity with further networks (e.g., a publicly switched telephone network and/or a data communications network/Internet) .
  • the UE 20 includes processing means such as at least one data processor (DP) 20A, storing means such as at least one computer-readable memory (MEM) 20B which tangibly stores at least one computer program (PROG) 20C or other set of executable instructions, communicating means such as a transmitter TX 20D and a receiver RX 20E for bidirectional wireless communications with the eNB 22 via one or more antennas 20F.
  • processing means such as at least one data processor (DP) 20A
  • MEM computer-readable memory
  • PROG computer program
  • communicating means such as a transmitter TX 20D and a receiver RX 20E for bidirectional wireless communications with the eNB 22 via one or more antennas 20F.
  • the eNB 22 also includes processing means such as at least one data processor (DP) 22A, storing means such as at least one computer-readable memory (MEM) 22B that tangibly stores at least one computer program (PROG) 22C or other set of executable instructions, and communicating means such as a transmitter TX 22D and a receiver RX 22E for bidirectional wireless communications with the UE 20 via one or more antennas 22F.
  • the eNB 22 stores at block 22G similar rules for how to configure, and how to construct and send the signaling related to the schedule bundling as detailed in the above non-limiting examples.
  • those devices are also assumed to include as part of their wireless communicating means a modem and/or a chipset which may or may not be inbuilt onto an RF front end chip within those devices 20, 22 and which also operates utilizing the schedule bundling signaling according to these teachings.
  • At least one of the PROGs 20C in the UE 20 is assumed to include a set of program instructions that, when executed by the associated DP 20 A, enable the device to operate in accordance with the exemplary embodiments of this invention, as detailed above.
  • the eNB 22 also has software stored in its MEM 22B to implement certain aspects of these teachings as detailed above for Figure 3.
  • the exemplary embodiments of this invention may be implemented at least in part by computer software stored on the MEM 20B, 22B which is executable by the DP 20A of the UE 20 and/or by the DP 22A of the eNB 22, or by hardware, or by a combination of tangibly stored software and hardware (and tangibly stored firmware).
  • Electronic devices implementing these aspects of the invention need not be the entire devices as depicted at Figure 4 or may be one or more components of same such as the above described tangibly stored software, hardware, firmware and DP, or a system on a chip SOC or an application specific integrated circuit ASIC.
  • the various embodiments of the UE 20 can include, but are not limited to personal portable digital devices having wireless communication capabilities, including but not limited to cellular telephones, navigation devices, laptop/palmtop/tablet computers, digital cameras and music devices, and Internet appliances, as well as the machine- to-machine type devices mentioned above.
  • Various embodiments of the computer readable MEMs 20B, 22B include any data storage technology type which is suitable to the local technical environment, including but not limited to semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, removable memory, disc memory, flash memory, DRAM, SRAM, EEPROM and the like.
  • Various embodiments of the DPs 20A, 22A include but are not limited to general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and multi-core processors.
  • LTE E-UTRAN evolved UTRAN

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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 message DCI d'informations de commande de liaison descendante indiquant quelles ressources radio N>1 sur une seconde porteuse composante (CC) doivent être ordonnancées. Le message DCI est envoyé sur une première CC afin d'ordonnancer la pluralité de ressources radio. Dans des modes de réalisation variés, N est indiqué par un total de N bits ou par un total de bits de cellule (log2(N)) ; le DCI comprend également une indication pour chacune des ressources radio N indiquant si les données de la ressource radio respective sont de nouvelles données ou des données retransmises ; la première et la seconde CC présentent configurations de sous-trame UL/DL différentes ; le message DCI est envoyé dans une sous-trame indiquée par un décalage spécifique d'UE auquel les ressources radio N sont affectées par ledit message DCI, et est configuré pour ordonnancement d'un groupage de domaine temporel par des couches élevées ou par détermination implicite au moyen de règles prédéfinies.
PCT/CN2012/071031 2012-02-10 2012-02-10 Appareils et procédés pour signalisation d'ordonnancement de groupages WO2013117011A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017138689A1 (fr) * 2016-02-12 2017-08-17 엘지전자 주식회사 Procédé de réception d'un signal dans un système de communication sans fil et appareil associé
WO2021007041A1 (fr) * 2019-07-06 2021-01-14 Qualcomm Incorporated Balayage de faisceau & répétition de xporteuses sur la base de dci
WO2021147073A1 (fr) 2020-01-23 2021-07-29 Qualcomm Incorporated Indication de groupage à travers des porteuses

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CN101998648A (zh) * 2009-08-02 2011-03-30 创新音速股份有限公司 无线通讯***的物理下链路控制信道配置方法及通讯装置
CN102201885A (zh) * 2010-03-25 2011-09-28 电信科学技术研究院 一种载波调度信息传输方法及其装置
CN102223728A (zh) * 2011-07-08 2011-10-19 电信科学技术研究院 一种进行调度的方法、***和设备

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Publication number Priority date Publication date Assignee Title
CN101998648A (zh) * 2009-08-02 2011-03-30 创新音速股份有限公司 无线通讯***的物理下链路控制信道配置方法及通讯装置
CN102201885A (zh) * 2010-03-25 2011-09-28 电信科学技术研究院 一种载波调度信息传输方法及其装置
CN102223728A (zh) * 2011-07-08 2011-10-19 电信科学技术研究院 一种进行调度的方法、***和设备

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017138689A1 (fr) * 2016-02-12 2017-08-17 엘지전자 주식회사 Procédé de réception d'un signal dans un système de communication sans fil et appareil associé
US10779287B2 (en) 2016-02-12 2020-09-15 Lg Electronics Inc. Method for receiving signal in wireless communication system and apparatus therefor
WO2021007041A1 (fr) * 2019-07-06 2021-01-14 Qualcomm Incorporated Balayage de faisceau & répétition de xporteuses sur la base de dci
CN114080853A (zh) * 2019-07-06 2022-02-22 高通股份有限公司 基于dci的跨载波重复和波束扫描
CN114080853B (zh) * 2019-07-06 2024-07-05 高通股份有限公司 基于dci的跨载波重复和波束扫描
US12034655B2 (en) 2019-07-06 2024-07-09 Qualcomm Incorporated DCI based xCarrier repetition and beam sweep
WO2021147073A1 (fr) 2020-01-23 2021-07-29 Qualcomm Incorporated Indication de groupage à travers des porteuses
EP4094513A4 (fr) * 2020-01-23 2023-10-04 Qualcomm Incorporated Indication de groupage à travers des porteuses

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