WO2022087970A1 - Procédé de communication sans fil et dispositif de communication - Google Patents

Procédé de communication sans fil et dispositif de communication Download PDF

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Publication number
WO2022087970A1
WO2022087970A1 PCT/CN2020/124867 CN2020124867W WO2022087970A1 WO 2022087970 A1 WO2022087970 A1 WO 2022087970A1 CN 2020124867 W CN2020124867 W CN 2020124867W WO 2022087970 A1 WO2022087970 A1 WO 2022087970A1
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WO
WIPO (PCT)
Prior art keywords
port
occ
dmrs
res
cdm group
Prior art date
Application number
PCT/CN2020/124867
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English (en)
Chinese (zh)
Inventor
吴作敏
Original Assignee
Oppo广东移动通信有限公司
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 Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/124867 priority Critical patent/WO2022087970A1/fr
Priority to CN202080103952.XA priority patent/CN116097814A/zh
Publication of WO2022087970A1 publication Critical patent/WO2022087970A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the embodiments of the present application relate to the field of communication, and more particularly, to a method and a communication device for wireless communication.
  • a wireless communication device including a processor and a memory.
  • the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect.
  • an apparatus for implementing the method in the above-mentioned first aspect.
  • a computer program which, when run on a computer, causes the computer to perform the method of the above-mentioned first aspect.
  • FIG. 4 is a schematic diagram of still another DMRS pattern provided by the present application.
  • FIG. 6 is a schematic diagram of a simulation result of a data block error rate provided by the present application.
  • FIG. 7 is a schematic flowchart of a method for wireless communication according to an embodiment of the present application.
  • the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.
  • the type-2 DMRS adopts the method of frequency division multiplexing + OCC. As shown in Figure 3, it is divided into three groups of resources by frequency division multiplexing (Frequency-division multiplexing, FDM) in the frequency domain:
  • FDM Frequency-division multiplexing
  • the DMRS pattern makes the DMRS REs performing OCC combining in the same CDM group as close as possible in the frequency domain to reduce the performance loss of channel estimation and support higher system throughput.
  • the DMRS pattern includes 4 CDM groups, which are denoted as CDM group 0, CDM group 1, CDM group 2, and CDM group 3, respectively.
  • the DMRS pattern supports the transmission of N layers of data, where N is a positive integer, and N ⁇ 2.
  • N is a positive integer
  • the DMRS pattern can also support the transmission of layer 1 data, which is not limited in this embodiment of the present application.
  • the M symbols include only pre-DMRS symbols.
  • the DMRS pattern supports at least one DMRS type.
  • the DMRS pattern supports a maximum of 12 ports when the REs performing OCC combining within the CDM group are located on one symbol.
  • the communication device may select some or all ports in a CDM group to send or receive DMRS.
  • the ports in the embodiments of the present application may also be referred to as DMRS pilot ports.
  • the REs that perform OCC combining in the CDM group in the DMRS pattern are located on consecutive subcarriers of one symbol; or, the REs that perform OCC combining in the CDM group in the DMRS pattern are located on consecutive subcarriers of M symbols or, in the DMRS pattern, the REs that perform OCC combining in the CDM group are located on the same subcarriers of M symbols. That is, the DMRS pattern meets the requirements of high-frequency communication, and improves the performance of DMRS channel estimation in the case of high-frequency and large subcarrier spacing, thereby improving system performance.
  • the DMRS pattern supports type-1 DMRS, and the DMRS pattern includes 2 CDM groups, which are respectively denoted as CDM group 0 and CDM group 1.
  • the REs that perform OCC combining in the CDM group in the DMRS pattern are located on consecutive subcarriers of 1 symbol.
  • the two REs in the CDM group that perform OCC combining are located on two consecutive subcarriers of one symbol, and are multiplexed by means of frequency domain OCC, and can support up to four ports.
  • one CDM group is partially continuous in the frequency domain, and one CDM group is evenly divided into 3 parts in the frequency domain. As shown in FIG. 8 , CDM group 0 includes port 0 and port 1, and CDM group 1 includes port 2 and port 3, wherein FIG.
  • single-symbol DMRS it includes 1 preamble DMRS symbol.
  • the communication device may only select ports in the same CDM group (such as port 0 and port 1 in CDM group 0) to Receive or send DMRS; when the number of transmission layers is greater than 2, such as 4 layers, the communication device can select multiple ports of different CDM groups (such as port 0 and port 1 of CDM group 0, and port 2 and port 3 of CDM group 1) ) to receive or transmit DMRS.
  • CDM group such as port 0 and port 1 in CDM group 0
  • the communication device can select multiple ports of different CDM groups (such as port 0 and port 1 of CDM group 0, and port 2 and port 3 of CDM group 1) ) to receive or transmit DMRS.
  • the REs that perform OCC combining in the CDM group in the DMRS pattern are located on consecutive subcarriers of 2 symbols.
  • the 4 REs in the CDM group that perform OCC combining are located on 2 consecutive subcarriers of 2 symbols, and are multiplexed in a time-domain + frequency-domain OCC manner, and can support up to 8 ports.
  • one CDM group is partially continuous in the frequency domain, and one CDM group is evenly divided into 3 parts in the frequency domain.
  • CDM group 0 includes port 0, port 1, port 4 and port 5
  • CDM group 1 includes port 2, port 3, port 6 and port 7, wherein FIG.
  • FIG. 9 exemplarily shows port 0 4 REs performing OCC merging on port 1, 4 REs performing OCC merging on port 1, 4 REs performing OCC merging on port 2, 4 REs performing OCC merging on port 3, and 4 REs performing OCC merging on port 4
  • the 4 REs in the black and bold lines in FIG. 9 are the 4 REs that perform OCC merging.
  • Other REs on port 0, port 1, port 2, port 3, port 4, port 5, port 6, and port 7 that perform OCC merging are similar, and other REs that perform OCC merging can be determined with reference to the 4 REs that perform OCC merging.
  • the communication device may only select some ports in the same CDM group (such as port 0 and port 1 in CDM group 0). ) to receive or send DMRS; when the number of transport layers is greater than 2, the communication device can select multiple ports in the same CDM group (such as port 0, port 1, port 4 and port 5 in CDM group 0) or different CDM Multiple ports of the group (eg, port 0, port 1, port 4, and port 5 of CDM group 0, and port 2, port 3, port 6, and port 7 of CDM group 1) receive or transmit DMRS.
  • the REs that perform OCC combining in the CDM group in the DMRS pattern are located on the same subcarrier of four symbols.
  • the 4 REs in the CDM group that perform OCC combining are located on the same subcarriers of 4 symbols, and are multiplexed by means of time domain OCC, which can support up to 8 ports.
  • one CDM group is partially continuous in the frequency domain, and one CDM group is evenly divided into 6 parts in the frequency domain.
  • CDM group 0 includes port 0, port 1, port 4 and port 5
  • CDM group 1 includes port 2, port 3, port 6 and port 7, wherein FIG.
  • the REs that perform OCC combining in the CDM group in the DMRS pattern are located on consecutive subcarriers of 1 symbol.
  • the four REs in the CDM group that perform OCC combining are located on four consecutive subcarriers of one symbol, that is, multiplexed in the manner of frequency domain OCC, and can support up to 12 ports.
  • one CDM group occupies consecutive subcarriers in the frequency domain.
  • CDM group 0 includes port 0, port 1, port 6, and port 7, CDM group 1 includes port 2, port 3, port 8, and port 9, and CDM group 2 includes port 4, port 5, and port 10 and port 11, wherein FIG.
  • CDM group 0 includes port 0, port 1, port 6, and port 7, CDM group 1 includes port 2, port 3, port 8, and port 9, and CDM group 2 includes port 4, port 5, and port 10 and port 11.
  • FIG. 13 exemplarily shows 4 REs that perform OCC merging on port 0, 4 REs that perform OCC merging on port 1, 4 REs that perform OCC merging on port 2, and 4 REs that perform OCC merging on port 3 4 REs, 4 REs performing OCC merging on port 4, 4 REs performing OCC merging on port 5, 4 REs performing OCC merging on port 6, 4 REs performing OCC merging on port 7, port 8 4 REs that perform OCC merging on port 9, 4 REs that perform OCC merging on port 9, 4 REs that perform OCC merging on port 10, and 4 REs that perform OCC merging on port 11.
  • the 4 REs in the bold black lines in FIG. 13 are the 4 REs that perform OCC merging.
  • Other REs on port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7, port 8, port 9, port 10 and port 11 that perform OCC merging are similar, refer to the shown
  • the 4 REs that perform OCC merging determine other REs that perform OCC merging.
  • a communication unit 310 configured to send or receive DMRS according to the demodulation reference signal DMRS pattern
  • the communication device 400 may specifically be the communication device of this embodiment of the present application, and the communication device 400 may implement the corresponding processes implemented by the communication device in each method of the embodiment of the present application, which is not repeated here for brevity. .
  • Embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product can be applied to the communication device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the communication device in the various methods of the embodiments of the present application. Repeat.

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

Abstract

L'invention concerne un procédé de communication sans fil et un dispositif de communication. L'invention concerne un motif de DMRS qui respecte un critère de communication à haute fréquence, et la performance de l'estimation de canal de DMRS dans le cas d'un grand espacement de sous-porteuses haute fréquence peut être améliorée, ce qui améliore la performance du système. Le procédé de communication sans fil comprend : un dispositif de communication envoyant ou recevant un DMRS selon un motif de DMRS, des RE, qui exécutent une combinaison d'OCC, dans un groupe de CDM dans le motif de DMRS respectant un des critères suivants : les RE, qui exécutent la combinaison d'OCC, dans le groupe de CDM sont situées sur des sous-porteuses consécutives d'un seul symbole ; les RE, qui exécutent la combinaison d'OCC dans le groupe de CDM sont situées sur des sous-porteuses consécutives de M symboles, M étant un nombre entier positif, et M ≥ 2 ; et les RE, qui exécutent la combinaison d'OCC dans le groupe de CDM sont situées sur la même sous-porteuse de M symboles, M étant un nombre entier positif, et M ≥ 2.
PCT/CN2020/124867 2020-10-29 2020-10-29 Procédé de communication sans fil et dispositif de communication WO2022087970A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2020/124867 WO2022087970A1 (fr) 2020-10-29 2020-10-29 Procédé de communication sans fil et dispositif de communication
CN202080103952.XA CN116097814A (zh) 2020-10-29 2020-10-29 无线通信的方法和通信设备

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/124867 WO2022087970A1 (fr) 2020-10-29 2020-10-29 Procédé de communication sans fil et dispositif de communication

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108234096A (zh) * 2016-12-21 2018-06-29 华为技术有限公司 参考信号的发送和接收方法，接入网设备和终端设备
US20200266964A1 (en) * 2019-02-14 2020-08-20 Samsung Electronics Co., Ltd. Method and apparatus for configuring reference signal in wireless communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108234096A (zh) * 2016-12-21 2018-06-29 华为技术有限公司 参考信号的发送和接收方法，接入网设备和终端设备
US20200266964A1 (en) * 2019-02-14 2020-08-20 Samsung Electronics Co., Ltd. Method and apparatus for configuring reference signal in wireless communication system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
QUALCOMM: "Remaining issues on NR DM-RS", 3GPP DRAFT; R1-1716731, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Nagoya, Japan; 20170918 - 20170921, 18 September 2017 (2017-09-18), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051353820 *

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