WO2018083375A1 - Procédés et appareils pour configurer des motifs de signal de référence de démodulation de liaison descendante flexible pour un intervalle de temps de transmission plus court - Google Patents

Procédés et appareils pour configurer des motifs de signal de référence de démodulation de liaison descendante flexible pour un intervalle de temps de transmission plus court Download PDF

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Publication number
WO2018083375A1
WO2018083375A1 PCT/FI2017/050735 FI2017050735W WO2018083375A1 WO 2018083375 A1 WO2018083375 A1 WO 2018083375A1 FI 2017050735 W FI2017050735 W FI 2017050735W WO 2018083375 A1 WO2018083375 A1 WO 2018083375A1
Authority
WO
WIPO (PCT)
Prior art keywords
dmrs
resources
bundle
csi
collision
Prior art date
Application number
PCT/FI2017/050735
Other languages
English (en)
Inventor
Ankit Bhamri
Karol Schober
Original Assignee
Nokia Technologies Oy
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 Nokia Technologies Oy filed Critical Nokia Technologies Oy
Publication of WO2018083375A1 publication Critical patent/WO2018083375A1/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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels

Definitions

  • Embodiments of the invention generally relate to wireless or mobile communications networks, such as, but not limited to, the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN), Long Term Evolution (LTE) Evolved UTRAN (E- UTRAN), LTE-Advanced (LTE-A), LTE-Advanced Pro, LTE-M, and/or 5G radio access technology.
  • UMTS Universal Mobile Telecommunications System
  • UTRAN Long Term Evolution
  • E- UTRAN Long Term Evolution Evolved UTRAN
  • LTE-A LTE-Advanced
  • LTE-M LTE-Advanced Pro
  • 5G radio access technology 5G radio access technology
  • Nominal DMRS resource position for any RBG with index i can be written as:
  • Processor 22 may perform functions associated with the operation of apparatus 10 which may include, for example, precoding of antenna gain/phase parameters, encoding and decoding of individual bits forming a communication message, formatting of information, and overall control of the apparatus 10, including processes related to management of communication resources.
  • memory 34 stores software modules that provide functionality when executed by processor 32.
  • the modules may include, for example, an operating system that provides operating system functionality for apparatus 20.
  • the memory may also store one or more functional modules, such as an application or program, to provide additional functionality for apparatus 20.
  • the components of apparatus 20 may be implemented in hardware, or as any suitable combination of hardware and software.
  • Fig. 3 a illustrates an example flow diagram of a method, according to one embodiment.
  • the method of Fig. 3a may be performed by a network node or access node for a radio access network, such as a base station, node B or eNB, or an access node of 5G radio access technology.
  • the method may be directed to defining a flexible pattern for sTTI, where the defined pattern is dependent on RBG/bundling size, number of signaled reference signals (e.g., DMRS) within a bundle, and CRS and CSI-RS shifts in a cell.
  • the defined flexible pattern is a DMRS pattern.
  • the sTTI may be less than or equal to 7 symbol TTI.
  • the defined flexible pattern is valid and beneficial irrespective of sTTI length.
  • Another embodiment is directed to an apparatus, which may include calculating means for calculating a spacing between the DMRS resources within a bundle based on the number of DMRS in the PRB bundle and the size of the bundle, calculating means for calculating nominal positions for DMRS resources based on the calculated spacing between the resources and the principle of placing DMRS resources at the edge/boundary of PRB.
  • the PRB bundle size and number of DMRS resources per OFDM symbol in each PRB bundle can be configured, signaled or fixed in specification.
  • the apparatus may also include determining means for determining whether a collision is seen with legacy CRS and CSI-RS based on the nominal position.
  • the apparatus may include transmitting means for transmitting the DMRS on the nominal position.
  • the apparatus may include shifting means for shifting the DMRS resources from their nominal position to avoid any collision with legacy CRS and/or CSI-RS.
  • the shifting means includes means for shifting the DMRS resources to a flexible DMRS position.

Landscapes

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

Abstract

L'invention concerne des systèmes, des procédés, des appareils et des produits programmes d'ordinateur fournissant une définition de motif de signal de référence flexible pour un intervalle de temps de transmission (TTI) plus court.
PCT/FI2017/050735 2016-11-04 2017-10-24 Procédés et appareils pour configurer des motifs de signal de référence de démodulation de liaison descendante flexible pour un intervalle de temps de transmission plus court WO2018083375A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662417488P 2016-11-04 2016-11-04
US62/417,488 2016-11-04

Publications (1)

Publication Number Publication Date
WO2018083375A1 true WO2018083375A1 (fr) 2018-05-11

Family

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Family Applications (1)

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PCT/FI2017/050735 WO2018083375A1 (fr) 2016-11-04 2017-10-24 Procédés et appareils pour configurer des motifs de signal de référence de démodulation de liaison descendante flexible pour un intervalle de temps de transmission plus court

Country Status (1)

Country Link
WO (1) WO2018083375A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020065553A1 (fr) * 2018-09-28 2020-04-02 Telefonaktiebolaget Lm Ericsson (Publ) Coexistence de signaux de référence dans des réseaux de communication sans fil
CN111865526A (zh) * 2019-04-29 2020-10-30 华为技术有限公司 一种通信方法及装置
WO2021055180A1 (fr) * 2019-09-19 2021-03-25 Qualcomm Incorporated Modifications de signal de référence de démodulation pour une opération d'un point de réception de multiples émissions à multiples signalisations
CN112689969A (zh) * 2018-10-05 2021-04-20 联想（新加坡）私人有限公司 生成csi报告的方法和装置
WO2022152217A1 (fr) * 2021-01-14 2022-07-21 Qualcomm Incorporated Indication de groupage de dmrs de pucch pour des répétitions de pucch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140226541A1 (en) * 2013-02-14 2014-08-14 Research In Motion Limited Design for Small Cell Demodulation Reference Signal and Initial Synchronization
US20160270059A1 (en) * 2015-03-13 2016-09-15 Qualcomm Incorporated Dmrs based dl for low latency

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140226541A1 (en) * 2013-02-14 2014-08-14 Research In Motion Limited Design for Small Cell Demodulation Reference Signal and Initial Synchronization
US20160270059A1 (en) * 2015-03-13 2016-09-15 Qualcomm Incorporated Dmrs based dl for low latency

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Study on latency reduction techniques for LTE (Release 14", 3GPP TR 36.881 V1.0.0 (2016-05, June 2016 (2016-06-01), XP051112261, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/TSG_RAN/TSG_RAN/TSGR_72/Docs/RP-161024.zip> [retrieved on 20170118] *
NOKIA: "On details of flexible DMRS design for DL shorter TTI", R1-1609325, October 2016 (2016-10-01), Lisbon, Portugal, XP051149370, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/TSG_RAN/WG1_RL1/TSGR1_86b/Docs/R1-1609325.zip> [retrieved on 20180130] *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020065553A1 (fr) * 2018-09-28 2020-04-02 Telefonaktiebolaget Lm Ericsson (Publ) Coexistence de signaux de référence dans des réseaux de communication sans fil
CN112740613A (zh) * 2018-09-28 2021-04-30 瑞典爱立信有限公司 无线通信网络中的参考信号的共存
US20220038234A1 (en) * 2018-09-28 2022-02-03 Telefonaktiebolaget Lm Ericsson (Publ) Coexistence of reference signals in wireless communication networks
CN112740613B (zh) * 2018-09-28 2024-04-05 瑞典爱立信有限公司 无线通信网络中的参考信号的共存
CN112689969A (zh) * 2018-10-05 2021-04-20 联想（新加坡）私人有限公司 生成csi报告的方法和装置
CN112689969B (zh) * 2018-10-05 2023-12-01 联想（新加坡）私人有限公司 生成csi报告的方法和装置
CN111865526A (zh) * 2019-04-29 2020-10-30 华为技术有限公司 一种通信方法及装置
CN111865526B (zh) * 2019-04-29 2021-10-01 华为技术有限公司 一种通信方法及装置
WO2021055180A1 (fr) * 2019-09-19 2021-03-25 Qualcomm Incorporated Modifications de signal de référence de démodulation pour une opération d'un point de réception de multiples émissions à multiples signalisations
US11533156B2 (en) 2019-09-19 2022-12-20 Qualcomm Incorporated Demodulation reference signal modifications for multiple signaling, multiple transmission reception point operation
WO2022152217A1 (fr) * 2021-01-14 2022-07-21 Qualcomm Incorporated Indication de groupage de dmrs de pucch pour des répétitions de pucch

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