WO2017193393A1 - Procédé, appareil et système de traitement de signal - Google Patents

Procédé, appareil et système de traitement de signal Download PDF

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Publication number
WO2017193393A1
WO2017193393A1 PCT/CN2016/082115 CN2016082115W WO2017193393A1 WO 2017193393 A1 WO2017193393 A1 WO 2017193393A1 CN 2016082115 W CN2016082115 W CN 2016082115W WO 2017193393 A1 WO2017193393 A1 WO 2017193393A1
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WO
WIPO (PCT)
Prior art keywords
modulation symbol
base station
modulation
terminal device
transformed
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/082115
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English (en)
Chinese (zh)
Inventor
谢信乾
郭志恒
程型清
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Priority to PCT/CN2016/082115 priority Critical patent/WO2017193393A1/fr
Publication of WO2017193393A1 publication Critical patent/WO2017193393A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a signal processing method, apparatus, and system.
  • the non-orthogonal multiplexing access (NOMA) transmission method can be used in a single The information of multiple terminal devices is transmitted on the resource unit to improve the overall transmission rate of the system.
  • the semi-orthogonal multiple access (SOMA) transmission method utilizes the Gray coding feature of the existing modulation method (or constellation), so that the terminal device can adopt a simple receiving algorithm, thereby Further improve system performance.
  • the downlink transmission schemes including NOMA and SOMA are collectively referred to as Multi-user Superposing Transmission (MUST).
  • the MUST communication it is required to provide a method for converting a downlink transmission signal by a base station, so that a signal transmitted by a base station to a plurality of terminal devices is superimposed to satisfy a Gray coding characteristic, thereby improving reliability of receiving downlink data by the terminal device.
  • the conversion method provided by the base station in the prior art needs to design an independent implementation module according to the modulation mode of each superimposed user, which has high complexity.
  • Embodiments of the present invention provide a signal processing method, apparatus, and system, which can provide a signal conversion method with low complexity to facilitate MUST transmission.
  • a signal conversion method with lower complexity can be provided, which can improve the reliability of receiving downlink data by the terminal device while saving system transmission resources.
  • the base station may also modulate a second signal to be transmitted to the second terminal device to generate a second modulation symbol S 2 .
  • the second terminal device and the first terminal device are a group of terminal devices that are jointly scheduled.
  • the first base station to the modulation symbols comprises transforming S. 1, the base station according to claim 2 is converted to the second modulation symbol of the first modulation symbol S S 1.
  • the base station may modulate the first signal and the second signal by using the same modulation mode, or may use different modulation modes for the first signal and the second signal. Make modulation.
  • the base station 2 is converted according to the second modulation symbol of the first modulation symbol S S. 1, comprising: the base station according to the second modulation mode modulation symbol S 2, using the following table
  • the formula in the transformation transforms the first modulation symbol S 1 :
  • the base station transforms the first modulation symbol S 1 according to the second modulation symbol S 2 , including: when the second modulation symbol S 2 adopts a QPSK modulation mode, adopting the following table The formula transforms the first modulation symbol S 1 :
  • the base station transforms the first modulation symbol S 1 according to the second modulation symbol S 2 , including: when the second modulation symbol S 2 adopts a QPSK modulation mode, adopting the following formula
  • the first modulation symbol S 1 is transformed:
  • the base station transforms the first modulation symbol S 1 according to the second modulation symbol S 2 , including: when the second modulation symbol S 2 adopts a 16QAM modulation mode, adopting the following formula
  • the first modulation symbol S 1 is transformed:
  • the base station transforms the first modulation symbol S 1 according to the second modulation symbol S 2 , including: when the power parameter configured by the base station is ⁇ , ⁇ is a real number and 0 ⁇ At 1 o'clock, the first modulation symbol S 1 is transformed by the following formula:
  • the base station transforms the first modulation symbol S 1 according to the second modulation symbol S 2 , including: when the power parameter configured by the base station is ⁇ , ⁇ is a real number and 0 ⁇ At 1 o'clock, the first modulation symbol S 1 is transformed by the following formula:
  • the base station when the terminal device and the first terminal device is not present in joint scheduling, the base station does the first modulation symbol S 1 is converted.
  • the base station may further scramble the first signal and the second signal before modulating the first signal and the second signal. After converting the first modulation symbol and the second modulation symbol, the base station may further perform layer mapping on the transformed data signal.
  • the method for the base station to modulate the first signal and the second signal includes BPSK, QPSK, 16QAM, 64QAM.
  • an embodiment of the present invention provides a base station, where the base station has a function of implementing a behavior of a base station in the foregoing method.
  • the functions can be implemented in hardware or through hardware. Perform the appropriate software implementation.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the base station includes a processor configured to support the base station to perform the corresponding functions of the above methods.
  • the base station may also include a transmitter and a memory.
  • the transmitter is configured to support communication between the base station and the terminal device, and send information or instructions involved in the foregoing method to the terminal device.
  • the memory is for coupling with a processor that stores the necessary program instructions and data for the base station.
  • an embodiment of the present invention provides a communication system, including a terminal device, and the base station described in the foregoing aspect.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the base station, including a program designed to perform the above aspects.
  • the base station processes the downlink data signal, including modulating the data signal, generating a modulation symbol, and then transforming the modulation symbol to generate a transform modulation symbol, thereby reducing complexity of the base station transformation method.
  • the transmission resource of the system is effectively saved, and the reliability of receiving downlink data by the terminal device is improved.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a signal processing method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a signal processing method according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • the technical solution proposed by the embodiment of the present invention is based on the communication system 100 shown in FIG. 1.
  • the communication system 100 can perform MUST communication.
  • the communication system 100 includes at least one base station (BS) and at least two terminal devices.
  • Two of the terminal devices can be a group of superimposed users, one terminal device is a near user, and the other terminal device For far users.
  • a near user is a user who needs interference cancellation at the receiving end in MUST communication.
  • a remote user refers to a user who does not need interference cancellation at the receiving end in MUST communication.
  • Near users and far users can be paired with each other.
  • the base station has the downlink data transmission requirement
  • the two terminal devices that are paired with each other can be scheduled to occupy the same downlink resource, and the data is sent to the two terminal devices.
  • Near users can only pair with far users.
  • Far users can only be paired with nearby users.
  • Two terminal devices that are paired with each other are also referred to as superimposed users, or terminal devices that are mutually
  • two terminal devices that can be paired with each other are provided, which are the terminal device 20 and the terminal device 21, respectively.
  • the terminal device 20 and the terminal device 21 are terminal devices that are jointly scheduled for each other.
  • the base station 10 can simultaneously transmit the signal processed data to the terminal device 20 and the terminal device 21 by using the same downlink resource in a manner of superimposing transmission. After receiving the signal processed data, the terminal device 20 and the terminal device 21 perform corresponding processing to obtain respective data.
  • the MUST communication system effectively improves the utilization efficiency of resources.
  • the downlink resource used by the base station 10 to transmit data may be a time-frequency resource.
  • the communication system 100 may be, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a Wideband Code Division Multiple Access (Wideband). Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), and the like.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • Wideband Wideband Code Division Multiple Access
  • Code Division Multiple Access (WCDMA) system Code Division Multiple Access (WCDMA) system
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE Frequency Division Duplex Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • the terminal device may also be referred to as a terminal, a user equipment (User Equipment, UE), a user terminal, a user agent, a user equipment, a subscriber unit, a subscriber station, a mobile station, and a mobile station (Mobile).
  • UE User Equipment
  • the terminal device can be connected to one or more core networks via a Radio Access Network (RAN) Communication
  • RAN Radio Access Network
  • the terminal device may be a mobile phone (or "cellular" phone), a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal number Personal Digital Assistant (PDA), handheld device with wireless communication function, computing device, computer with mobile terminal or other processing device connected to wireless modem, etc.
  • the terminal device can also be portable, pocket-sized, handheld Computer built-in or in-vehicle mobile devices that exchange language with wireless access networks Words and / or data.
  • a base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the name of a device having a base station function may be different, for example, in an LTE system, an evolved Node B (evolved NodeB, eNB or eNodeB), in the third In a 3rd generation (3G) system, it is called a Node B or the like.
  • the above-described devices that provide wireless communication functions for terminal devices are collectively referred to as base stations.
  • the number of terminal devices included in the communication system 100 shown in FIG. 1 is merely an example, and the embodiment of the present invention is not limited thereto.
  • more terminal devices that communicate with the base station may be included, which are not described in the drawings for the sake of brevity.
  • the communication system 100 shown in FIG. 1 although the base station 10 and a plurality of terminal devices are shown, the communication system 100 may not be limited to include the base station and the terminal device, and may further include a core network. Devices or devices for carrying virtualized network functions, etc., will be apparent to those of ordinary skill in the art and will not be described in detail herein.
  • the base station Since the data signals of a pair of mutually paired terminal devices need to be transmitted on the same resource, the base station needs to process the downlink data sent to a group of terminal devices to avoid interference between signals.
  • the signal processing method provided by the base station is related to the modulation mode of each terminal device, and the complexity is high.
  • the base station provides a signal conversion method with a lower complexity for the terminal device, which improves the reliability of receiving the downlink data by the terminal device while saving transmission resources.
  • first terminal device two terminal devices that are jointly scheduled (ie, paired with each other) may be referred to as a first terminal device and a second terminal device, respectively, and a signal to be sent to the first terminal device is referred to as a first signal, and is to be sent to the first terminal.
  • the signal of the two terminal devices is called the second signal.
  • the base station processes the first signal to be transmitted to the first terminal device, and the processing includes the following steps.
  • Step 101 The base station modulates the first signal to generate a first modulation symbol.
  • the base station may further scramble the first signal before modulating the first signal.
  • the imaginary part of S 1 is the imaginary part of S 1 ,
  • the base station may further modulate a second signal to be sent to the second terminal device to generate a second modulation symbol.
  • the second terminal device and the first terminal device are a group of terminal devices that are jointly scheduled.
  • the base station sends the first signal and the second signal to the first terminal device and the second terminal device by using the same resource.
  • the base station may further scramble the second signal before modulating the second signal.
  • the base station modulates the first signal and the second signal, and uses Modulation methods include, but are not limited to, BPSK, QPSK, 16QAM, 64QAM, and the like.
  • the base station may modulate the first signal and the second signal by using the same modulation manner, or may modulate the first signal and the second signal by using different modulation modes.
  • Step 102 the base station of the first modulation symbol S 1 is converted, to generate a converted modulation symbols.
  • the specific transformation manner of the first modulation symbol S 1 by the base station is related to the second modulation symbol S 2 .
  • the base station may transform the first modulation symbol S 1 by any one of the following a, b, and c.
  • the base station transforms the first modulation symbol according to a second modulation symbol. 1 S S 2 of the modulation scheme.
  • the base station may transform the first modulation symbol S 1 according to a specific modulation manner of the second modulation symbol S 2 by using a formula in the following Table 1:
  • the base station may transform the first modulation symbol S 1 by using a formula in the following Table 2:
  • the specific transformation method of the first modulation symbol S 1 by the base station is as follows:
  • the specific transformation method of the first modulation symbol S 1 by the base station is as follows:
  • the base station transforms the modulation symbol S 1 of the first terminal device according to the configured power parameter ⁇ , where the power parameter ⁇ is a value pre-configured by the base station and related to the power for transmitting the first signal, and ⁇ is greater than 0 is a real number less than 1.
  • the base station may adopt the following transformation method according to the second modulation symbol S 2 and the configured power parameter ⁇ :
  • the base station may also adopt the following transformation method:
  • the base station transforms the first modulation symbol S 1 according to a preset rule.
  • the base station may adopt the following transformation method:
  • I' 1 I 1
  • Q' 1 Q 1 .
  • the terminal device when the terminal device and the first terminal device does not exist joint scheduling, i.e., a base station needs only to the terminal device, the terminal device in the first example of the present embodiment, when downlink data transmission, the base station may not be the first modulation symbol S 1 Transforming; or, the base station transforms the first modulation symbol S 1 as follows:
  • I' 1 I 1
  • Q' 1 Q 1 .
  • the base station may transform the modulation symbols S '1 layer mapping, shown in Figure 3, as well as other subsequent treatment, particularly treatment not elaborate.
  • the base station finally transmits the processed data signal to the terminal device.
  • the terminal device After receiving the processed data signal sent by the base station, the terminal device may obtain an internal data signal by using inverse processing or an existing receiving method.
  • the signal processing method provided by the embodiment of the present invention can enable the base station to adopt a signal conversion method with lower complexity, which can improve the reliability of receiving downlink data of each terminal device while saving system transmission resources.
  • each network element such as a terminal device, a base station, an access network device, a core network device, etc.
  • each network element such as a terminal device, a base station, an access network device, a core network device, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is executed by hardware or computer software to drive hardware depends on the specific application and design of the technical solution. Constraint conditions. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • FIG. 4 shows a possible structural diagram of the base station 40 involved in the above embodiment.
  • the base station 40 can be the base station 10 as shown in FIG.
  • the base station includes a processing unit 401 and a transmitting unit 402.
  • the processing unit 401 may also send the second device to be sent.
  • the second signal of the terminal device is modulated to generate a second modulation symbol S 2 .
  • the processing unit 401 may transform the first modulation symbol S 1 according to the second modulation symbol S 2 by using any one of a, b, and c in step 102.
  • processing unit 401 may not be the first modulation symbol S 1 is converted, or converted using the method described in the first step 102 converts the modulation symbols S 1 .
  • the processing unit 401 is further configured to perform scrambling on the first signal, mapping the transform modulation symbol layer, and the like.
  • the processing unit 401 can also perform various functions for communicating with a terminal device or other network device.
  • the transmitting unit 402 transmits the first signal processed by the processing unit 401 to the terminal device.
  • the base station can adopt a signal conversion method with lower complexity, which improves the reliability of receiving downlink data of each terminal device while reducing the complexity of the base station equipment.
  • FIG. 5 shows a possible structural diagram of the base station 50 involved in the above embodiment.
  • the base station includes a processor 501 and a receiver/transmitter 502.
  • the functions of processing unit 401 and transmitting unit 402 in FIG. 4 may be implemented by processor 501 and receiver/transmitter 502, respectively.
  • the receiver/transmitter 502 can be configured to support data transmission and reception between the base station and the terminal device in the foregoing embodiment.
  • the base station may further include a memory 503, which may be used to store program codes and data of the base station.
  • the base station may further include a communication unit 504 for supporting the base station to communicate with other network entities.
  • bus system 505 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • bus system 505 various buses are labeled as bus system 505 in FIG.
  • Figure 5 only shows a simplified design of the base station.
  • the base station may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the present invention are within the scope of the present invention.
  • the processor in the embodiment of the present invention may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like. Programming logic devices, transistor logic devices, hardware components, or any combination thereof. It can be implemented or executed in conjunction with the present disclosure. Various exemplary logical blocks, modules and circuits are described.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the steps of the method or algorithm described in the embodiments of the present invention may be directly embedded in hardware, a software module executed by a processing unit, or a combination of the two.
  • the software modules can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art.
  • the storage medium can be coupled to the processing unit such that the processing unit can read information from the storage medium and can write information to the storage medium.
  • the storage medium can also be integrated into the processing unit.
  • the processing unit and the storage medium may be configured in an ASIC, and the ASIC may be configured in the user terminal device. Alternatively, the processing unit and the storage medium may also be configured in different components in the user terminal device.
  • the above described functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on a computer readable medium or transmitted on a computer readable medium in one or more instructions or code.
  • Computer readable media includes computer storage media and communication media that facilitates transfer of a computer program from one place to another.
  • the storage medium can be any available media that any general purpose or special computer can access.
  • Such computer readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage device, or any other device or data structure that can be used for carrying or storing Others can be read by general purpose/special computer, or general purpose/special processing unit
  • the medium of the form of the program code can be appropriately defined as a computer readable medium, for example, if the software is from a website site, server, or other remote resource through a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or wirelessly transmitted in, for example, infrared, wireless, and microwave, is also included in the computer readable medium as defined.
  • DSL digital subscriber line
  • the disks and discs include compact disks, laser disks, optical disks, DVDs, floppy disks, and Blu-ray disks. Disks typically replicate data magnetically, while disks typically optically replicate data with a laser. Combinations of the above may also be included in a computer readable medium.

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

Abstract

La présente invention concerne, dans certains modes de réalisation, un procédé, un dispositif et un système de traitement de signal. Le procédé comprend les étapes suivantes : une station de base traite un premier signal à envoyer à un premier dispositif terminal, ce traitement comprenant : la station de base module le premier signal en vue de générer un premier symbole modulé S 1 , S 1 = I 1 + jQ 1 , j = √ -1, I 1 étant une partie réelle du premier symbole modulé S 1 , et Q 1 étant une partie imaginaire du premier symbole modulé S 1 ; la station de base transforme le premier symbole modulé S 1 , de manière à générer un symbole modulé transformé S' 1 = I' 1 + jQ' 1 , et I' 1 et Q' 1 étant une partie réelle et une partie imaginaire du symbole modulé transformé S'1 ; et la station de base envoie le premier signal traité au premier dispositif terminal. De cette manière, la complexité de la mise en œuvre du procédé de transformation d'une station de base est réduite, ce qui améliore la fiabilité d'un dispositif terminal destiné à recevoir des données de liaison descendante.
PCT/CN2016/082115 2016-05-13 2016-05-13 Procédé, appareil et système de traitement de signal Ceased WO2017193393A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101447854A (zh) * 2007-11-27 2009-06-03 上海华为技术有限公司 数据发送/转发/处理方法及装置
CN101640940A (zh) * 2008-07-30 2010-02-03 华为技术有限公司 多用户联合映射时指示调制编码方案的方法和基站
US20120039270A1 (en) * 2010-08-12 2012-02-16 Samsung Electronics Co., Ltd. Methods and apparatus for uplink control transmit diversity
CN103428152A (zh) * 2012-09-21 2013-12-04 上海数字电视国家工程研究中心有限公司 降低ofdm峰均比的方法及相应的发射端和接收端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101447854A (zh) * 2007-11-27 2009-06-03 上海华为技术有限公司 数据发送/转发/处理方法及装置
CN101640940A (zh) * 2008-07-30 2010-02-03 华为技术有限公司 多用户联合映射时指示调制编码方案的方法和基站
US20120039270A1 (en) * 2010-08-12 2012-02-16 Samsung Electronics Co., Ltd. Methods and apparatus for uplink control transmit diversity
CN103428152A (zh) * 2012-09-21 2013-12-04 上海数字电视国家工程研究中心有限公司 降低ofdm峰均比的方法及相应的发射端和接收端

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