WO2014166058A1 - Adaptation de harq inter-bande pour prendre en charge une configuration souple de sous-trames en tdd - Google Patents

Adaptation de harq inter-bande pour prendre en charge une configuration souple de sous-trames en tdd Download PDF

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Publication number
WO2014166058A1
WO2014166058A1 PCT/CN2013/073960 CN2013073960W WO2014166058A1 WO 2014166058 A1 WO2014166058 A1 WO 2014166058A1 CN 2013073960 W CN2013073960 W CN 2013073960W WO 2014166058 A1 WO2014166058 A1 WO 2014166058A1
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WIPO (PCT)
Prior art keywords
radio resource
configuration
feedback
tdd
mapped
Prior art date
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PCT/CN2013/073960
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English (en)
Inventor
Jing HAN
Chunyan Gao
Haiming Wang
Lili Zhang
Wei Hong
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Broadcom Corporation
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Priority to PCT/CN2013/073960 priority Critical patent/WO2014166058A1/fr
Publication of WO2014166058A1 publication Critical patent/WO2014166058A1/fr

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Classifications

    • 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
    • H04L1/1861—Physical mapping arrangements
    • 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
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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
    • 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
    • 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

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 mapping acknowledgement/negative acknowledgement feedback from a radio resource to which that feedback correlates when the system uses flexibly configured uplink-downlink subframe configurations.
  • Hybrid automatic repeat request (HARQ) techniques allow for the recipient of a wireless message to send an acknowledgement (ACK) to the sender of that message without the need for added control signaling to schedule the ACK.
  • ACK acknowledgement
  • UL uplink
  • DL downlink
  • NACK negative acknowledgement
  • TDD time division duplex
  • E-UTRA evolved Universal Terrestrial Radio Access system
  • 3 GPP Third Generation Partnership Project
  • TS 36.213 vl2.2.0 2013-03
  • FIG. 1 An example of this is depicted at Figure 1 in which the time division duplex (TDD) UL/DL configuration 0 in frame 102 follows UL/DL configuration 1 in frame 101.
  • TDD time division duplex
  • E-UTRANs E-UTRA networks
  • An UL message in subframe #8 of frame 101 would under conventional HARQ rules map to subframe #4 of the next subsequent subframe, but in Figure 1 that also is an UL subframe and so the network cannot sent its HARQ feedback there.
  • the next best option is for the network to send its ACK for subframe #8 of frame 101 in DL subframe #5 of the next subsequent frame 102.
  • document RP- 121772 entitled [3 GPP RAN#58; December 2012] is a work item to solve the HARQ timeline in flexible TDD when the TDD UL-DL configuration is changed by a different time scale.
  • This document proposes that the HARQ timeline will follow the specific TDD UL-DL configuration that was indicated by the eNB, and that the HARQ timeline still needs to be defined for boundary subframes (such as where granted subframes and their corresponding feedback subframes are in different TDD configurations as compared with the physical downlink/uplink shared channel PDSCH/PUSCH).
  • a method operating a wireless radio device comprises: a) storing in a local memory of the device hybrid automatic repeat request (HARQ) timing rules for carrier aggregation network deployments in which a primary cell and a secondary cell simultaneously utilize different time division duplex (TDD) uplink-downlink (UL-DL) subframe configurations; b) re-using the HARQ timing rules for flexible TDD UL-DL subframe configuration network deployments in which a same cell changes the TDD UL-DL configuration between a first configuration period and a second configuration period by mapping a data radio resource in the first configuration period to a feedback radio resource in the second configuration period (or mapping a scheduling grant resource in the first configuration period to a data radio resource in the second configuration period) according to the re-used HARQ timing rules; and c) at least one of searching for HARQ feedback or sending HARQ feedback in the mapped feedback radio resource, or searching for data or sending data in the
  • the apparatus comprises a processing system, and the processing system comprises at least one processor and a memory storing a set of computer instructions.
  • the at least one memory a) stores hybrid automatic repeat request (HARQ) timing rules for carrier aggregation network deployments in which a primary cell and a secondary cell simultaneously utilize different time division duplex (TDD) uplink-downlink (UL-DL) sub frame configurations.
  • HARQ hybrid automatic repeat request
  • the processing system is configured to cause the apparatus at least to: b) re-use the HARQ timing rules for flexible TDD UL-DL sub frame configuration network deployments in which a same cell changes the TDD UL-DL configuration between a first configuration period and a second configuration period by mapping a data radio resource in the first configuration period to a feedback radio resource in the second configuration period (or mapping a scheduling grant resource in the first configuration period to a data radio resource in the second configuration period) according to the re-used HARQ timing rules; and c) at least one of search for HARQ feedback or send HARQ feedback in the mapped feedback radio resource, or searching for data or sending data in the mapped data radio resource.
  • a computer readable memory tangibly storing a set of computer executable instructions for operating a wireless radio device.
  • the set of computer executable instructions comprises: a) code for storing in a local memory of the device hybrid automatic repeat request (HARQ) timing rules for carrier aggregation network deployments in which a primary cell and a secondary cell simultaneously utilize different time division duplex (TDD) uplink-downlink (UL-DL) subframe configurations; b) code for re-using the HARQ timing rules for flexible TDD UL-DL subframe configuration network deployments in which a same cell changes the TDD UL-DL configuration between a first configuration period and a second configuration period by mapping a data radio resource in the first configuration period to a feedback radio resource in the second configuration period (or mapping a scheduling grant resource in the first configuration period to a data radio resource in the second configuration period) according to the re-used HARQ timing rules; and c) at least one of cl)
  • Figure 1 is a timing diagram illustrating a time division duplex (TDD) change of uplink-downlink configurations across two different configuration periods and is an exemplary network deployment in which embodiments of these teachings can be practiced to advantage.
  • TDD time division duplex
  • Figure 2 summarizes in tabular form the prior art agreement in 3 GPP for PDSCH HARQ timing of the Scell for component carrier specific TDD configurations in LTE Release 11.
  • Figure 3 summarizes in tabular form the prior art agreement in 3 GPP for PDSCH HARQ timing for case C of Figure 2 of the Scell for component carrier specific TDD configurations in LTE Release 11.
  • Figure 4 summarizes in tabular form the prior art agreement for the self-scheduling cases A through D for the Scell PUSCH HARQ timing.
  • Figure 5 illustrates three of the seven UL-DL sub frame configurations that are conventional in EUTRANs for explaining how the CA HARQ timing rules are re-used according to these teachings for mapping HARQ feedback when the TDD configuration is dynamically flexible.
  • Figure 6 is a logic flow diagram that illustrates a method for operating a network access node and a user equipment/UE, and a result of execution by an apparatus of a set of computer program instructions embodied on a computer readable memory for operating such an eNB or a UE, in accordance with certain exemplary embodiments of this invention.
  • FIG. 7 is a simplified block diagram of a UE, and a cellular network represented by an eNB and by a MME, which are exemplary electronic devices suitable for use in practicing the exemplary embodiments of the invention.
  • the HARQ timeline (mapping) should be also changed according to the changed TDD UL-DL configuration.
  • HARQ timing design for subframes at the DL/UL configuration change boundary cannot reuse the legacy HARQ timeline scheme since otherwise there will be feedback or (re)transmission loss.
  • E-UTRAN would map feedback corresponding to the PUSCH in subframe #8 to a physical HARQ indictor channel (PHICH) in subframe #4 as shown by the dotted line 110, but for TDD configuration 0 in the second period 102 subframe #4 is UL.
  • the PHICH might reasonably be located in subframe #5 as shown by the solid line 120.
  • a physical downlink control channel PDSCH sent on the primary component carrier (also termed the Pcell for primary cell) can schedule UL or DL resources on a secondary component carrier (or Scell for secondary cell).
  • Adopting cross-carrier scheduling gave rise to some difficulties in TDD HARQ, namely should the HARQ feedback be on the Pcell or the Scell and if the Pcell how is HARQ handled when the Pcell and the Scell use different UL/DL configurations.
  • HARQ timing when the UL/DL configuration is flexible it is useful to review how HARQ timing is handled in the cross carrier scheduling scenario.
  • Figure 2 summarizes in tabular form the agreement in 3GPP for PDSCH HARQ timing of the Scell for component carrier specific TDD configurations in LTE Release 11.
  • SIB1 refers to system information block type 1
  • UL/DL configurations 0 through 6 refer to the seven UL/DL subframe configurations that are conventional in LTE.
  • Self scheduling refers to the scheduling grant (PDCCH) and the scheduled resources (PDSCH or PUSCH) being on the same component carrier. It follows then that the UL HARQ feedback (carried on PHICH) will also be on this same component carrier and DL HARQ feedback (carried on PUCCH) will always on Pcell.
  • Cross carrier scheduling means that the scheduling grant is on a different component carrier than the scheduled resources, and the UL HARQ feedback (carried on PHICH) for data on those scheduled resources is on a different component carrier from the scheduled resources but DL HARQ feedback (carried on PUCCH) will always on Pcell.
  • the Scell PDSCH timing follows the Pcell SIBl configuration if the set of DL sub frames indicated by the Scell SIBl configuration is a subset of the DL sub frames indicated by the Pcell SIBl configuration.
  • Case B is the full duplex case and the agreement is that the Scell PDSCH HARQ timing should follow the Scell SIBl HARQ timing.
  • case C the Scell PDSCH timing follows the timing shown at Figure 3.
  • Figure 3 encompasses only the cross scheduling scenario.
  • Figure 3 summarizes in tabular form the agreement in 3GPP for PDSCH HARQ timing for case C of Figure 2 of the Scell for component carrier specific TDD configurations in LTE Release 11. When there is cross carrier scheduling this HARQ timing is to follow the Pcell timing for PDSCH, regardless of the number of component carriers that are aggregated.
  • the Scell PDSCH HARQ timing follows the Scell SIBl configuration in Figure 4.
  • the Scell PDSCH HARQ timing follows the Scell SIBl configuration, if the set of UL sub frames indicated by the scheduled cell SIBl configuration is a subset of the UL sub frames indicated by the scheduling cell SIBl configuration and if the PUSCH round trip time (RTT) of the scheduling cell SIBl configuration is 10ms.
  • the Scell PDSCH HARQ timing follows the scheduled cell timing for PUSCH except configuration combinations ⁇ 6, 2 ⁇ , ⁇ 6, 5 ⁇ , ⁇ 0, 2 ⁇ , ⁇ 0, 4 ⁇ , ⁇ 0, 5 ⁇ , which UL scheduling/HARQ timing should follow TDD configuration 1.
  • a first such rule is that UL/DL sub frames in the same TDD UL-DL configuration period (each period beginning at a change in the TDD UL-DL configuration such as between periods 101 and 102 of Figure 1) can follow different reference TDD UL-DL configuration for HARQ timeline. There are only two possibilities which are distinguished from among a first and a second type of subframes.
  • the first type of subframes are those UL/DL subframes whose UL feedback/UL grant/DL feedback timing falls to the same TDD UL/DL configuration period of PDSCH/PUSCH subframe according to HA Q timing of the ongoing TDD UL/DL configuration.
  • the reference configuration is to be the ongoing TDD UL/DL configuration.
  • the ongoing TDD UL-DL configuration means the TDD UL-DL configuration that is indicated by eNB and configured for the flexible TDD capable UEs.
  • the TDD UL-DL configuration is expected to remain the same and this applies for both types of subframes.
  • the other possibility concerns the second type of subframes which are opposite the first type.
  • the second type of subframes are those UL/DL subframes whose UL feedback/UL grant/DL feedback timing falls to the different TDD UL/DL configuration period of PDSCH/PUSCH subframe according to HARQ timing of the ongoing TDD UL/DL configuration.
  • the reference configuration is determined by the following rules.
  • DL reference configuration table that has already been agreed for the self scheduling case of inter-band TDD carrier aggregation with different UL/DL configuration.
  • PUSCH HARQ timing for subframes of the second type that is, UL scheduling timing or the UL grant and DL feedback timing on the PHICH
  • UL reference configuration table that has already been agreed for the cross-carrier scheduling case of inter-band TDD carrier aggregation with different UL/DL configurations.
  • the TDD configuration containing the PUSCH transmission can be regarded as the configuration of the scheduled cell
  • the TDD configuration containing the UL grant or DL feedback (PHICH) transmission can be regarded as the configuration of the scheduling cell.
  • the timing for the downlink HARQ feedback (the PHICH) corresponding to that granted uplink resource when the flexible TDD configuration is changed from configuration 0 to configuration 1
  • the uplink subframe in configuration 0 whose PHICH in configuration 1 should follow the existing HARQ agreement for cross-carrier scheduling with regards to configuration 1 is the scheduling cell.
  • the PHICH timing for the uplink subframes in configuration 0 having their corresponding PHICH in configuration 1 should follow the timing of the scheduled cell, which in this example is configuration 0.
  • Figure 6 presents a summary of the above teachings operating a wireless radio device such as for example a network access node (eNB or NodeB or base station) or a user equipment (UE).
  • a wireless radio device such as for example a network access node (eNB or NodeB or base station) or a user equipment (UE).
  • eNB or NodeB or base station e.g. a network access node
  • UE user equipment
  • HARQ hybrid automatic repeat request
  • Block 604 re-uses those HARQ timing rules, specifically the HARQ timing rules are re-used for flexible TDD UL-DL subframe configuration network deployments in which a same cell changes the TDD UL-DL configuration between a first configuration period and a second configuration period, and these rules are re-used to map a data radio resource in the first configuration period to a feedback radio resource in the second configuration period according to the re-used HARQ timing rules.
  • these same rules are re-used to map a scheduling grant resource in the first configuration period to a data radio resource in the second configuration period according to the re-used HARQ timing rules.
  • the rules are used for both mapping situations.
  • Figure 1 illustrates different configurations in the different first 101 and second 102 configuration periods.
  • first configuration period used configuration 0 and the second configuration period used configuration 1.
  • data in a downlink radio resource PDSCH in subframe 6 of configuration 0 in the first configuration period would map to an uplink radio resource PUCCH in subframe 2 of configuration 1 in the second configuration period.
  • block 606 tells that there is a search for the HARQ feedback in the mapped feedback radio resource or the HA Q feedback is sent in the mapped feedback radio resource. Whether the feedback radio resource is used for the sending or for searching depends on whether Figure 6 is considered from the perspective of the network or the user equipment, and of course also whether the feedback resource is uplink or downlink. For the case in which the mapping of block 604 is from the scheduling grant resource in the first configuration to the data radio resource in the second configuration, then the searching for or sending of block 606 refers to searching for data or sending data in the data radio resource that maps from the scheduling radio resource.
  • the mapped data radio resource in this case must be uplink.
  • the network access node searches for the UE's data on that uplink data radio resource that maps from the scheduling radio resource, and the UE sends to the network its uplink data on that same mapped uplink data radio resource.
  • Block 608 details one non-limiting embodiment from above in which the HARQ timing rules that are for self-scheduling are re-used when the data radio resource (and/or the scheduling grant resource) in the first configuration period is downlink, and the mapped feedback radio resource (and/or the mapped data radio resource) in the second configuration period is uplink; and where the HARQ timing rules that are for cross-carrier scheduling are re-used when the data radio resource in the first configuration period is uplink and the feedback radio resource in the second configuration period is downlink.
  • the HARQ timing rules are re-used by:
  • the HA Q timing rules are re-used by:
  • the process in Figure 6 can represent a method or a manner of operating an E-UTRAN access node that searches for uplink HARQ feedback and that sends downlink HARQ feedback in the mapped feedback radio resources, and/or that searches for data in the mapped data radio resource.
  • Figure 6 can represent a method or a manner of operating a user equipment that searches for downlink HARQ feedback and that sends uplink HARQ feedback in the mapped feedback radio resources, and/or that sends data in the mapped data radio resource.
  • the logic diagram of Figure 6 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/wireless radio device are configured to cause that device to operate, whether such a device is the network access node (eNB or Node B or base station) or the UE (mobile terminal or handset or mobile station) or some other portable electronic device that is connected to the cellular network, or one or more components thereof such as a modem, chipset, or the like.
  • the various blocks shown in Figure 6 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 or instructions 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.
  • circuit/circuitry embodiments include any of the following: (a) hardware-only circuit implementations (such as implementations in only analog and/or digital circuitry) and (b) combinations of circuits and software (and/or firmware), such as: (i) a combination of processor(s) or (ii) portions of processor(s)/software (including digital signal processor(s)), software, and memory(ies) that work together to cause an apparatus, such as a network access node or a user equipment/UE, to perform the various functions summarized at Figure 6 and (c) circuits, such as a microprocessor(s) or a portion of a microprocessor(s), that require software or firmware for operation, even if the software or firmware is not physically present.
  • 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 also covers, for example, a baseband integrated circuit or applications processor integrated circuit for a user equipment UE or for a network access node/eNB or a similar integrated circuit in a server or other network device which operates according to these teachings.
  • a radio network access node that is illustrated as an eNB 22 is adapted for communication over a wireless link 21 with an apparatus, such as a mobile terminal or UE 20.
  • the access node 22 may be any access node such as a node B or an eNB (including frequency selective repeaters and remote radio heads) of any wireless network, such as UTRAN, WCDMA, GSM, GERAN, E-UTRAN/LTE, LTE-Advanced and the like.
  • the operator network of which the access node 22 is a part may also include a network control element such as a radio network controller RNC in the case of a UTRAN and WCDMA network.
  • a network control element such as a radio network controller RNC in the case of a UTRAN and WCDMA network.
  • RNC radio network controller
  • the higher network entity represents a mobility management entity MME as shown in Figure 7, which may also serve as the serving gateway S-GW.
  • This higher network entity 26 generally provides connectivity with the core cellular network and with further networks (e.g., a publicly switched telephone network PSTN 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 storing at least one computer program (PROG) 20C, communication means such as a transmitter TX 20D and a receiver RX 20E for bidirectional wireless communications with the access node 22 using the operative radio access technology. All of the relevant wireless communications are via one or more antennas 20F. Also stored in the MEM 20B at reference number 20G are the computer code or algorithms for the already agreed HARQ timing rules for carrier aggregation (CA) deployments, and the code or algorithms for re-using those HARQ timing rules for flexible TDD UL-DL subframe configuration deployments, according to non-limiting example embodiments above.
  • CA carrier aggregation
  • the access node 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 storing at least one computer program (PROG) 22C, and communication 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 access node 22 stores at block 22G in certain embodiments its own computer software code or algorithms for the already agreed CA HARQ timing rules, and the code or algorithms for re-using those HARQ timing rules for flexible TDD UL-DL subframe configuration deployments. In some radio technologies the access node 22 will have a direct data/control link 23 with other adjacent access nodes.
  • a higher network entity 26 above the radio access node 22 In LTE/LTE -Advanced this may be a mobility management entity or a serving gateway as noted above; in UTRAN and WCDMA it is a radio network controller R C.
  • the higher network entity 26 includes processing means such as at least one data processor (DP) 26A, storing means such as at least one computer-readable memory (MEM) 26B storing at least one computer program (PROG) 26C, and communication means such as a modem 26F for bidirectional communications with the access node 22 and with other access nodes under its control or coordination over the data and control link 25.
  • DP data processor
  • MEM computer-readable memory
  • PROG computer program
  • those devices are also assumed to include as part of their wireless communicating means a modem and/or a chipset and/or an antenna chip which may or may not be inbuilt onto a radiofrequency (RF) front end module within those devices 20, 22 and which also operates according to the teachings set forth above.
  • RF radiofrequency
  • 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 20A, enable the device to operate in accordance with the exemplary embodiments of this invention, as detailed above and particularly summarized at Figure 6.
  • the access node 22 also has software stored in its MEM 22B to implement similar aspects of these teachings as has been described, depending on whether the HARQ feedback is being sent uplink or downlink but the mapping is similar.
  • 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 access node 22; or by hardware, or by a combination of tangibly stored software and hardware (and tangibly stored firmware) in any one or more of these devices 20, 22.
  • the respective DP with the MEM and stored PROG may be considered a data processing system.
  • Electronic devices implementing these aspects of the invention need not be the entire devices as depicted at Figure 7 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 or a digital signal processor DSP or a modem or an antenna module or a RF front end module as noted above.
  • 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 and other mobile phones, radio handsets, wearable radio-telephony devices, navigation devices, laptop/palmtop/tablet computers, digital cameras and music devices, Internet appliances, USB dongles and data cards.
  • Various embodiments of the computer readable MEMs 20B, 22B, 26B 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, 26A include but are not limited to general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and multi-core processors.
  • DSPs digital signal processors

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Abstract

L'invention a pour objet, lorsqu'une cellule primaire et une cellule secondaire emploient simultanément des configurations différentes de sous-trames en liaison montante/descendante (UL-DL) en duplex par répartition en temps (TDD), de faire en sorte que des règles de synchronisation d'une demande de retransmission automatique hybride (HARQ) utilisées pour des déploiements de réseaux à agrégation de porteuses, soient réutilisées pour des déploiements de réseaux à configuration souple de sous-trames UL-DL en TDD dans lesquels une même cellule change de configuration UL-DL en TDD entre des première et deuxième périodes de configuration. Cette réutilisation est accomplie, dans un mode de réalisation en associant une ressource radio de données de la première période de configuration à une ressource radio de rétroaction de la deuxième période de configuration selon les règles de synchronisation réutilisées de HARQ. Selon qu'il s'agit de la liaison montante ou descendante et que le point de vue est celui du dispositif mobile ou du réseau, la ressource radio de rétroaction associée est utilisée pour rechercher ou pour envoyer une rétroaction de HARQ. Des exemples non limitatifs réutilisent des règles d'auto-programmation et de programmation croisée et considèrent également la configuration au cours de la première/deuxième période de configuration comme la cellule programmée/programmatrice des règles de synchronisation de HARQ.
PCT/CN2013/073960 2013-04-09 2013-04-09 Adaptation de harq inter-bande pour prendre en charge une configuration souple de sous-trames en tdd WO2014166058A1 (fr)

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