WO2019191869A1 - Procédé et dispositif de transmission et de réception d'informations, et système de communication - Google Patents

Procédé et dispositif de transmission et de réception d'informations, et système de communication Download PDF

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Publication number
WO2019191869A1
WO2019191869A1 PCT/CN2018/081610 CN2018081610W WO2019191869A1 WO 2019191869 A1 WO2019191869 A1 WO 2019191869A1 CN 2018081610 W CN2018081610 W CN 2018081610W WO 2019191869 A1 WO2019191869 A1 WO 2019191869A1
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Prior art keywords
information
time
frequency resource
multiplexing
feature
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PCT/CN2018/081610
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English (en)
Chinese (zh)
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张健
张磊
王昕�
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富士通株式会社
张健
张磊
王昕�
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Priority to PCT/CN2018/081610 priority Critical patent/WO2019191869A1/fr
Publication of WO2019191869A1 publication Critical patent/WO2019191869A1/fr

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    • 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
    • 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 invention relate to the field of communications technologies, and in particular, to a method and device for transmitting and receiving information and a communication system.
  • Non-orthogonal multiple access (NOMA) technology is an important technology of the fifth generation (5G) communication system.
  • NOMA is not limited to the use of orthogonal time-frequency resources to distinguish terminal devices, and thus it is possible to multiplex more terminal devices within limited time-frequency resources.
  • the robustness of NOMA to interference between terminal devices makes it easy to combine with grant-free transmission/transmission with configured grant, thereby reducing data latency and signaling overhead.
  • KPIs key performance indicators
  • NOMA can use non-orthogonal resources to complex terminal devices. use. These non-orthogonal resources may include, for example, power, interleaving (corresponding to corresponding interleaver interleaver), sequences, codewords, resource mapping, and the like.
  • Different NOMA modes can be constructed based on different non-orthogonal resources and/or combinations of different non-orthogonal resources, such as sequence-based NOMA, interleave-based NOMA, codeword-based NOMA, etc.; in addition, the same NOMA mode
  • Different NOMA configurations may also be included, for example, for sequence-based NOMA, different NOMA configurations may refer to different sequences; for interlace-based NOMA, different NOMA configurations may refer to different interlaces; for codeword-based NOMA, different The NOMA configuration can refer to different codewords, which are not listed here. Therefore, different NOMA modes and/or NOMA configurations can generate different multiplexing signatures.
  • the inventor has found that in the current solution, the NOMA mode and/or the NOMA configuration are generally fixed for a certain terminal device, that is, each terminal device generally uses the same multiplexing feature for information transmission or reception.
  • each terminal device generally uses the same multiplexing feature for information transmission or reception.
  • multiple (at least two) terminal devices may use the same multiplexing feature for information transmission, which may result in the terminal devices The data transmitted between them collides.
  • Embodiments of the present invention provide a method, an apparatus, and a communication system for transmitting and receiving information, and it is expected to reduce or avoid collision of data and/or information transmitted between terminal devices.
  • a method for transmitting and receiving information includes:
  • a terminal device including:
  • a feature determining unit that determines a first multiplexing feature and a second multiplexing feature for the first time-frequency resource and the second time-frequency resource;
  • an information transceiving unit that transmits or receives information based on the first multiplexing feature on the first time-frequency resource, and transmits or receives information based on the second multiplexing feature on the second time-frequency resource.
  • a method for transmitting and receiving information includes:
  • the first time frequency resource and the second time frequency resource correspond to the first multiplexing feature and the second multiplexing feature.
  • a network device including:
  • An information transceiving unit which receives information that is sent by the terminal device in the first time-frequency resource and the second time-frequency resource, or sends information to the terminal device on the first time-frequency resource and the second time-frequency resource;
  • the first time-frequency resource and the second time-frequency resource correspond to a first multiplexing feature and a second multiplexing feature.
  • a communication system comprising the terminal device as described above; and the network device as described above.
  • An advantageous embodiment of the present invention is to: determine a first multiplexing feature and a second multiplexing feature for a first time-frequency resource and a second time-frequency resource; and based on the first complex on the first time-frequency resource Transmitting or receiving information with the feature and transmitting or receiving information based on the second multiplexing feature on the second time-frequency resource.
  • the multiplexing feature can be changed within the time-frequency resource of the data transmission, thereby avoiding the performance loss caused by the multiplexing feature collision, and the diversity feature gain can also obtain the potential diversity gain.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an interlace-based NOMA transmission mode according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a sequence-based NOMA transmission mode according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a codeword-based NOMA transmission mode according to an embodiment of the present invention.
  • Figure 5 is a schematic diagram of a method of transmitting and receiving information according to Embodiment 1 of the present invention.
  • FIG. 6 is another schematic diagram of an information transmitting and receiving method according to Embodiment 1 of the present invention.
  • FIG. 7 is a diagram showing an example of repeated transmission using the same multiplexing feature according to Embodiment 2 of the present invention.
  • FIG. 8 is a diagram showing an example of repeated transmission using different multiplexing features according to Embodiment 2 of the present invention.
  • FIG. 9 is a diagram showing an example of not using a multiplexing feature hopping according to Embodiment 2 of the present invention.
  • FIG. 10 is a diagram showing an example of using a multiplexing feature hopping according to Embodiment 2 of the present invention.
  • FIG. 11 is a diagram showing an example of using a multiplexing feature hopping between two hops according to Embodiment 3 of the present invention.
  • FIG. 12 is a diagram showing an example of using a multiplexing feature hopping between two symbols according to Embodiment 4 of the present invention.
  • FIG. 13 is a diagram showing an example of using a multiplexing feature hopping between two time-frequency resource sub-lattices according to Embodiment 5 of the present invention.
  • FIG. 14 is a schematic diagram of an information transmitting and receiving method according to Embodiment 6 of the present invention.
  • Figure 15 is a diagram showing an information transmitting and receiving apparatus of Embodiment 7 of the present invention.
  • Figure 16 is a schematic diagram of an information transmitting and receiving apparatus according to Embodiment 8 of the present invention.
  • FIG. 17 is a schematic diagram of a network device according to Embodiment 9 of the present invention.
  • Figure 18 is a schematic diagram of a terminal device according to Embodiment 9 of the present invention.
  • the terms “first”, “second”, etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the terms “comprising,” “comprising,” “having,” or “an” are used to distinguish different elements from the title, but do not indicate the spatial arrangement or chronological order of the elements, and these elements should not be used by these terms. Limited.
  • the term “and/or” includes any and all combinations of one or more of the associated listed terms.
  • the term “communication network” or “wireless communication network” may refer to a network that conforms to any communication standard such as Long Term Evolution (LTE), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), and the like.
  • LTE Long Term Evolution
  • LTE-A Enhanced Long Term Evolution
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • the communication between the devices in the communication system may be performed according to any phase of the communication protocol, and may include, for example but not limited to, the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G. , New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
  • 1G generation
  • 2G 2.5G, 2.75G
  • 5G New Radio
  • NR, New Radio New Radio
  • the term "network device” refers to, for example, a device in a communication system that accesses a terminal device to a communication network and provides a service for the terminal device.
  • the network device may include, but is not limited to, a device: a base station (BS, a base station), an access point (AP, an Access Point), a transmission and reception point (TRP), a broadcast transmitter, and a mobility management entity (MME, Mobile). Management Entity), gateway, server, Radio Network Controller (RNC), Base Station Controller (BSC), and so on.
  • BS base station
  • AP access point
  • TRP transmission and reception point
  • MME mobility management entity
  • Management Entity gateway
  • server Radio Network Controller
  • BSC Base Station Controller
  • the base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), and a 5G base station (gNB), and the like, and may further include a Remote Radio Head (RRH). , Remote Radio Unit (RRU), relay or low power node (eg femeto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • base station may include some or all of their functions, and each base station may provide communication coverage for a particular geographic area.
  • the term "cell” can refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term “user equipment” refers to, for example, a device that accesses a communication network through a network device and receives a network service.
  • the terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.
  • the terminal device may include but is not limited to the following devices: a cellular phone (Cellular Phone), a personal digital assistant (PDA, Personal Digital Assistant), a wireless modem, a wireless communication device, a handheld device, a machine type communication device, a laptop computer, Cordless phones, smart phones, smart watches, digital cameras, and more.
  • a cellular phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem Wireless Fidelity
  • a wireless communication device a handheld device
  • a machine type communication device a laptop computer
  • Cordless phones smart phones, smart watches, digital cameras, and more.
  • the terminal device may be a device or device that performs monitoring or measurement, and may include, but is not limited to, a Machine Type Communication (MTC) terminal.
  • MTC Machine Type Communication
  • network side refers to one side of the network, which may be a certain base station, and may also include one or more network devices as above.
  • user side or “terminal side” or “terminal device side” refers to a side of a user or a terminal, which may be a certain UE, or may include one or more terminal devices as above.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • the terminal device and the network device are exemplarily illustrated.
  • the communication system 100 may include a network device 101 and a terminal device 102.
  • FIG. 1 is only described by taking one terminal device and one network device as an example, but the embodiment of the present invention is not limited thereto.
  • an existing service or a service that can be implemented in the future can be performed between the network device 101 and the terminal device 102.
  • these services may include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and high reliability low latency communication (URLLC, Ultra-Reliable and Low). -Latency Communication), and so on.
  • NOMA transmission modes can be constructed based on different features of non-orthogonal resources and/or combinations of different features.
  • a NOMA transmission scheme may be based on only one feature (eg, based only on interleaving) or on a combination of multiple features (eg, based on both interleaving and sparse resource mapping).
  • FIG. 2 is a schematic diagram of an interlace-based NOMA transmission mode according to an embodiment of the present invention.
  • the output bit sequence may be repeated several times. Then, bit-level interleaving is performed, and then the interleaved bits are modulated and mapped to physical resources to form an Orthogonal Frequency Division Multiplexing (OFDM) symbol for transmission.
  • OFDM Orthogonal Frequency Division Multiplexing
  • FIG. 3 is a schematic diagram of a sequence (symbol spreading sequence) based NOMA transmission mode according to an embodiment of the present invention.
  • a symbol spreading sequence based NOMA transmission mode
  • FIG. 3 shows that after a bit sequence subjected to channel coding and rate matching is modulated for a terminal device, Each modulated symbol can be multiplied by a symbol spreading sequence to be spread into a sequence of symbols, followed by physical resource mapping and OFDM symbol generation.
  • FIG. 4 is a schematic diagram of a codeword-based NOMA transmission mode according to an embodiment of the present invention. As shown in FIG. 4, for a terminal device, a bit sequence that has undergone channel coding and rate matching may be directly mapped to a predetermined mapping rule. A codeword (or symbol vector/symbol sequence) followed by physical resource mapping and OFDM symbol generation.
  • different terminal devices may use different interlaces (e.g., Figure 2) or use different sequences (e.g., Figure 3) or use different codewords (e.g., Figure 4), which are the basis for distinguishing terminal devices.
  • the receiver of the network device can decouple the information (and/or data) multiplexed by the plurality of terminal devices using multi-user detection techniques.
  • different terminal devices may also perform multiplexing of information (and/or data) based on different powers or different resource mapping manners.
  • more different NOMA transmission modes can be constructed based on different non-orthogonal resources and/or combinations of different non-orthogonal resources.
  • the NOMA can use OFDM or DFT-s-OFDM waveforms, which is not limited in the present invention.
  • NOMA is robust against interference between terminal devices. This feature makes NOMA Suitable for combination with unscheduled transmission.
  • the network device For the unscheduled transmission, the network device (for example, the base station) configures and reserves available time-frequency resources for the terminal device in advance, and the terminal device does not need to send a scheduling request (SR, scheduling request) and wait for scheduling signaling after the service arrives, which may be Autonomously initiates data transmission within the configured time-frequency resource.
  • SR scheduling request
  • the network device For the unscheduled transmission, the network device (for example, the base station) configures and reserves available time-frequency resources for the terminal device in advance, and the terminal device does not need to send a scheduling request (SR, scheduling request) and wait for scheduling signaling after the service arrives, which may be Autonomously initiates data transmission within the configured time-frequency resource.
  • SR scheduling request
  • multiple terminal devices can share time-frequency resources.
  • the unscheduled transmission itself also has frequency hopping, repetition transmission and other technical means to resist interference and improve transmission reliability.
  • the number of terminal devices may be greater than the number of available multiplexing features.
  • the multiplexing feature may be at least one of the above-mentioned power, interleaving, sequence, codeword, resource mapping, and the like, which may be used to distinguish non-orthogonal resources of the terminal device. Therefore, in the process of scheduling-free transmission, it is inevitable that multiple terminal devices transmit using the same multiplexing feature (which may also be referred to as multiplexing feature collision), which usually affects the multi-user detection performance of the receiving end. , bringing a certain degree of performance loss, such as an increase in the user's block error rate (BLER), a decrease in throughput, and the like.
  • BLER block error rate
  • the NOMA method of distinguishing terminal devices by using a spreading sequence if two terminal devices use the same spreading sequence, the high correlation between sequences causes the sequence to remain despreading. Strong interference between end devices.
  • the unscheduled transmission will also use frequency hopping and/or repeated transmission to improve the reliability of data transmission.
  • a multiplexing feature such as a spreading sequence
  • Hops and/or collisions occur in each iteration of the transmission. This continuous collision will greatly reduce and reduce the performance advantages of frequency hopping and/or repeat transmission itself.
  • the information mentioned in the embodiment of the present invention may be control information or data information, etc.
  • the sending or receiving of the information may be an uplink transmission between the network device and the terminal device, or may be a network device.
  • the downlink transmission with the user equipment may also be an edge link transmission between the terminal device and the terminal device.
  • the embodiments of the present invention do not limit these specific contents, and can be applied to different scenarios.
  • FIG. 5 is a schematic diagram of a method of transmitting and receiving information according to an embodiment of the present invention, showing a situation on the terminal device side. As shown in FIG. 5, the method includes:
  • Step 501 The terminal device determines a first multiplexing feature and a second multiplexing feature for the first time-frequency resource and the second time-frequency resource;
  • Step 502 The terminal device sends or receives information based on the first multiplexing feature on the first time-frequency resource, and sends or receives information on the second time-frequency resource based on the second multiplexing feature.
  • the multiplexing feature may include a multiplexing mode and/or a multiplexing configuration.
  • the multiplexing manner may include, for example, one or more NOMA modes using at least one of the following resources: power, interleaving, sequence, codeword, resource mapping.
  • the present invention is not limited thereto, and other non-orthogonal resources may also be used; in addition, one of the above non-orthogonal resources may be used as one multiplexing mode, or at least two of the above non-orthogonal resources may be used as another A multiplexing method.
  • the multiplexing configuration may include information of at least one of: bit repetition number information, bit interleaving information, symbol interleaving information, bit scrambling sequence information, symbol scrambling sequence information, bit spreading sequence Information, symbol spreading sequence information, codeword information, resource mapping information, modulation information, and code rate information.
  • bit repetition number information bit interleaving information
  • symbol interleaving information bit scrambling sequence information
  • symbol scrambling sequence information bit spreading sequence Information
  • symbol spreading sequence information codeword information
  • resource mapping information resource mapping information
  • modulation information e.g., referred to as a NOMA configuration
  • the above description is exemplarily described in the NOMA mode and the NOMA configuration, but the present invention is not limited thereto, and may be, for example, an OMA mode and/or an OMA configuration.
  • the above description is only taking the first time-frequency resource and the second time-frequency resource as an example, and the present invention should be understood as at least two time-frequency resources; for more than two time-frequency resources, the basis may be two
  • the processing is similarly performed; in addition, the time-frequency resource herein can be understood as a time domain resource and/or a frequency domain resource.
  • the terminal device may perform hopping on the multiplexing feature used for information transmission or reception based on the hopping information, to enable (or enable) the first time-frequency resource and the second time-frequency resource. Determining different said first multiplexing features and said second multiplexing features.
  • the network device may indicate hopping information, such as hopping patterns and/or hopping patterns, to the terminal device, or directly indicate multiplexing characteristics of one or more time-frequency resources.
  • hopping information such as hopping patterns and/or hopping patterns
  • FIG. 6 is another schematic diagram of an information transmitting and receiving method according to an embodiment of the present invention, showing a situation of a terminal device side and a network device side. As shown in FIG. 6, the method includes:
  • Step 601 The network device sends hopping information to the terminal device, where the hopping information is used to indicate a multiplexing feature of one or more time-frequency resources.
  • Step 602 The terminal device determines a first multiplexing feature and a second multiplexing feature for the first time-frequency resource and the second time-frequency resource;
  • Step 603 The terminal device sends or receives information based on the first multiplexing feature on the first time-frequency resource, and sends or receives information on the second time-frequency resource based on the second multiplexing feature.
  • the hopping information may be carried by semi-static signaling and/or dynamic signaling.
  • the semi-static signaling includes radio resource control (RRC) signaling
  • the dynamic signaling includes downlink control information (DCI, Downlink Control) in a Physical Downlink Control Channel (PDCCH). Information); the invention is not limited thereto.
  • FIG. 6 only schematically illustrates the embodiment of the present invention, but the present invention is not limited thereto.
  • the order of execution between the various steps can be appropriately adjusted, and other steps can be added or some of the steps can be reduced.
  • Those skilled in the art can appropriately adapt according to the above, and are not limited to the description of FIG. 6 described above.
  • the hopping information may be determined by the terminal device, for example, the terminal device may be determined in a pseudo-random manner.
  • the hopping information may be determined by at least one of: a time-frequency resource sub-cell index, a reference signal index, a symbol index, a hop index, a slot index, a repeated transmission index, a system frame number, a user identifier, a cell identifier, and a beam index.
  • the invention is not limited thereto.
  • the first time-frequency resource and the second time-frequency resource may be used for a single transmission of the information, or the first time-frequency resource and the second time-frequency resource may be used. Used for repeated transmission of the information. That is, the present invention can be applied to a scene of single transmission, and can also be applied to a scene of repeated transmission. For further explanation of these contents, please refer to Examples 2 to 5 to be described later.
  • the hopping may occur between at least two time-frequency resource sub-frames, or between at least two time slots, or between at least two symbols, or between at least two hops Or between at least two subcarriers, or between at least two resource blocks (RBs); however, the invention is not limited thereto.
  • the granularity of the multiplexed feature hopping may be a time slot, a hop or a symbol, etc., or may be predefined or configured by a base station.
  • the hopping pattern/hopping pattern may be configured by the network device, or may also be based on a reference signal (eg, demodulation reference signal DM-RS, but the invention is not limited thereto) index, slot index, hop index, symbol index At least one of the parameters such as the user identification is determined. For further explanation of these contents, please refer to Examples 2 to 5 to be described later.
  • the multiplexed feature can be changed within the time-frequency resource of the data transmission, thereby avoiding the performance loss caused by the continuous collision of the multiplexed feature, and the multiplexed feature hopping can also obtain the potential Diversity gain.
  • the first multiplexing feature and the second multiplexing feature are determined for the first time-frequency resource and the second time-frequency resource; and the first multiplexing feature is sent on the first time-frequency resource. Or receiving information and transmitting or receiving information based on the second multiplexing feature on the second time-frequency resource.
  • the multiplexing feature can be changed within the time-frequency resource of the data transmission, thereby avoiding the performance loss caused by the multiplexing feature collision, and the diversity feature gain can also obtain the potential diversity gain.
  • This embodiment exemplifies the hopping between two time slots by using repeated transmission as an example on the basis of Embodiment 1.
  • unscheduled transmissions can use repeated transmission methods to improve data transmission reliability.
  • FIG. 7 is a diagram showing an example of repeated transmission using the same multiplexing feature according to an embodiment of the present invention.
  • a certain terminal device j0 needs to transmit a certain transport block (TB)
  • the transport block is repeatedly transmitted K (K ⁇ 1) times.
  • K transmissions can use the same or different redundancy versions (RV, redundancy version).
  • the index s of the multiplexing features (0 ⁇ s ⁇ S-1) can uniquely identify one of the multiplexing features. If no multiplexing feature hopping is used, the terminal device will always use the same multiplexing feature (indexed as s) in K transmissions. If another terminal device j1 also uses the multiplexing feature (indexed as s), then the two terminal devices may continue to have multiplexing feature collisions in K transmissions, so that the demodulation performance of both terminal devices is affected.
  • FIG. 8 is a diagram showing an example of repeated transmission using different multiplexing features according to an embodiment of the present invention.
  • the multiplexing feature may hop in K repeated transmissions.
  • the multiplexing characteristics s k (0 ⁇ s k ⁇ S-1) can be independently selected and used, and different terminal devices
  • the hopping of the multiplexed features is also independent of each other, so the probability of multiplexed feature collisions occurring continuously for K repeated transmissions can be effectively reduced. Since K times of transmissions are mutually replicas, single or multiple transmissions without multiplexing feature collisions can provide more reliable likelihood information for data demodulation, thereby improving the accuracy of demodulation decoding.
  • the above K times of repeated transmissions may occur on K slots, so the granularity of the multiplexing feature hopping is a time slot, that is, the multiplexing feature exhibits slot level hopping.
  • the granularity of K repeated transmissions may also be smaller than the time slot; for example, as an extreme case, K times of repeated transmission may occur on K OFDM symbols, and the granularity of multiplexing feature hopping is symbol, ie, multiplexing Features exhibit symbol-level transitions.
  • the hopping pattern and/or the hopping pattern of the multiplexing feature may be determined in the following manner.
  • the network device configures the hopping pattern and/or the hopping pattern of the multiplexed features to the terminal device through semi-static and/or dynamic signaling.
  • the network device uses RRC signaling to combine the set ⁇ s 0 , s 1 , . . . , s k-1 ⁇ containing the K multiplexed feature indices together with the parameters required for other unscheduled transmissions defined in the current standard. Configured for the terminal device.
  • the hopping pattern and/or the hopping pattern of the multiplexed features are determined in a pseudo-random manner.
  • both the network device and the terminal device are capable of obtaining a hopping pattern of the same multiplexed feature in accordance with established rules.
  • the multiplexing feature index used by the current repeated transmission k may be determined by at least one of the following parameters.
  • the reference signal (eg, demodulation reference signal DM-RS) used by the terminal device is indexed: for example, the reference signal is sent by the terminal device for data demodulation of the terminal device by the network device.
  • the reference signal index may be a reference signal port index and/or a reference signal sequence index and/or an orthogonal cover code (OCC) index and/or a code division multiplexing (CDM) group index (eg, See TS 38.211 section 6.4.1).
  • OCC orthogonal cover code
  • CDM code division multiplexing
  • the network device can identify the terminal device by blindly detecting the reference signal, and when the network device detects a certain reference signal, the reference signal index can be obtained. Since different terminal devices typically use different reference signals, determining the multiplexing characteristics based on the reference signals can prevent the different multiplexing devices from using the same multiplexing features to some extent.
  • Repeated transmission index Considering that repeated transmission may not be granular in time slots, a repeated transmission index k (0 ⁇ k ⁇ K-1) may be used as a parameter for determining multiplexing characteristics.
  • Hop index Considering that K times of repeated transmissions can use the frequency hopping mode, that is, different transmissions can use different frequency resources, corresponding to different hops, so the hop index can be used as the parameter for determining the multiplexing feature. .
  • the symbol index can be used as a parameter for determining the multiplexing feature.
  • SFN System frame number
  • the user ID may have a specific association relationship with the reference signal (for example, one-to-one mapping, etc.), so the user identifier may also be used as a parameter for determining the multiplexing feature.
  • Cell ID The introduction of a cell identifier can avoid multiplexing feature collisions between adjacent cells to some extent.
  • Beam ID The user transmission may use a beam, so the beam index can also be used as a parameter to determine the multiplexing characteristics.
  • FIG. 9 is an exemplary diagram of a multiplexed feature hopping not being used in an embodiment of the present invention.
  • FIG. 10 is an exemplary diagram of a multiplexed feature hopping using an embodiment of the present invention.
  • An exemplary comparison of the use and non-use of multiplexed feature hopping can reveal the benefits of multiplexing feature hopping.
  • the multiplexed feature index sequence corresponding to the K times of transmission has at most four different patterns. If the multiplexing feature hopping is used, the multiplexed feature index sequence corresponding to the K-time transmission has at most 256 different patterns, so that the available multiplexed feature index sequence space is enlarged, and the probability of occurrence of continuous collision can be reduced.
  • the multiplexing feature hopping Assuming that five terminal devices initiate data transmission at the same time, if the multiplexing feature hopping is not used, the multiplexed feature collision occurs in the four transmissions of the terminal device 1 and the terminal device 2, so that the performance of the two terminal devices may be seriously affected; With the multiplexing feature hopping, only the four transmissions of the terminal device 5 are affected by the multiplexing feature collision, and only one transmission of the other terminal devices is affected by the collision, so that the performance of only one terminal device may be seriously affected.
  • This embodiment exemplifies the case where the frequency hopping in the time slot is enabled and the multiplexed feature hopping is performed according to the hop on the basis of the first embodiment.
  • the terminal device mentioned in Embodiment 2 can use the frequency hopping mode during K times of repeated transmission, wherein frequency hopping occurs between K times of repeated transmissions. As described in the third embodiment, actually frequency hopping can also occur in a single transmission.
  • FIG. 11 is a diagram showing an example of using a multiplexing feature hopping between two hops according to an embodiment of the present invention.
  • the data transmission in one slot is dispersed to two frequency positions hop#0 and hop#1.
  • the multiplexed feature hopping can also occur between two hops, ie the two hops use independent multiplexing features, for example two hops in Figure 11 use two completely different multiplexing features.
  • the terminal device has only one transmission opportunity. If the multiplexing feature can hop between two hops inside the time slot, the multiplexing can still be avoided to some extent. Feature collisions, such as collisions with only one hop.
  • intra-slot frequency hopping can also be used, and can be used in conjunction with the inter-slot frequency hopping described in Embodiment 2, and the multiplexing feature can be hopped between hops in the time slot. And/or a jump occurs between hops between time slots.
  • the multiplexing feature provides more freedom as the hop jumps to avoid collisions.
  • the hopping pattern and/or the hopping pattern of the multiplexing feature can be determined, and in addition, the network device can enable the intra-slot frequency hopping function of the terminal device by signaling. Only the hop-related content will be described below, and the other contents are the same as in the second embodiment.
  • the network device may configure the hopping pattern and/or the hopping pattern of the multiplexed features to the terminal device through semi-static and/or dynamic signaling.
  • the network device can configure the multiplexing feature index corresponding to each hop. Hops can be in a single transmission or in multiple iterations.
  • the hopping pattern and/or the hopping pattern of the multiplexed features may be determined in a pseudo-random manner.
  • the multiplexing feature index may be determined by at least one of the following parameters: a hop index, ie, a number of hops within a single transmission or a number within multiple repeated transmissions; a reference signal index used by the terminal device; a time slot Slot index; repeated transmission index; symbol index; system frame number; user identification (UE ID); cell identification (cell ID); beam index (beam ID);
  • This embodiment exemplifies the transition between two symbols on the basis of Embodiment 1.
  • Figure 12 is a diagram showing an example of the use of multiplexing feature hopping between two symbols in accordance with an embodiment of the present invention. As shown in FIG. 12, the terminal device performs data transmission in a certain time slot. Since the time slot contains multiple OFDM symbols, the multiplexing feature can be hopped between symbols.
  • symbol 0 and symbol 1 in Fig. 12 use different multiplexing features, respectively.
  • this symbol level multiplexing feature hopping it is possible to avoid repeated collisions of the multiplexed features in all symbols.
  • the above symbol level multiplexed feature hopping can also be used with K times of repeated transmission and/or frequency hopping.
  • a hopping pattern and/or a hopping pattern of the multiplexing feature can be determined. Only the symbol-related content will be described below, and the other contents are the same as those of Embodiment 2 or 3.
  • the network device may configure the hopping pattern and/or the hopping pattern of the multiplexed features to the terminal device through semi-static and/or dynamic signaling.
  • the terminal device configures a multiplexing feature index corresponding to each symbol.
  • the symbol can be located in a single transmission or in multiple iterations.
  • the hopping pattern and/or the hopping pattern of the multiplexed features may be determined in a pseudo-random manner.
  • the multiplexed feature index may be determined by at least one of the following parameters: a symbol index, ie, a number of symbols within a single transmission or a number within a plurality of repeated transmissions; a hop index; a slot index ; repeat transmission index; system frame number; user identification (UE ID); cell identification (cell ID); beam index (beam ID); the present invention is not limited thereto.
  • This embodiment exemplifies the transition between two time-frequency resource sub-frames on the basis of Embodiment 1.
  • FIG. 13 is a diagram showing an example of using multiplexing feature hopping between two time-frequency resource sub-lattices according to an embodiment of the present invention.
  • the terminal device transmits TB#1
  • the available time-frequency resources are one slot in the time domain and several RBs in the frequency domain.
  • the time-frequency resource can be divided into several sub-cells, each sub-cell is defined by several symbols in the time domain and several sub-carriers in the frequency domain, and the multiplexing feature is hopped between the sub-lattices, that is, each sub-grid can use different complexes. Use features.
  • the manner and/or numbering manner of the time-frequency resource sub-frames may be predefined or may be flexibly configured.
  • the network device configures the division mode and/or the numbering manner to the terminal device through signaling, so that the network device and the terminal device have a consistent understanding of this.
  • the multiplexing of the multiplexing features between sub-lattices can avoid the continuous collision of the multiplexing features in the entire time slot, and the replacement of the multiplexing features also helps to balance the performance of the NOMA and obtain the diversity gain.
  • the multiplexed feature sub-level hopping can be used in conjunction with the multiple repeated transmissions and/or frequency hopping described above.
  • a hopping pattern and/or a hopping pattern of the multiplexing feature can be determined. Only the sub-related content will be described below, and the other contents are the same as those of Embodiments 2 to 4.
  • the network device may configure the hopping pattern and/or the hopping pattern of the multiplexed features to the terminal device through semi-static and/or dynamic signaling.
  • the network device configures a multiplexing feature index corresponding to each sub-cell.
  • the sub-frames can be located in a single transmission or in multiple iterations.
  • the hopping pattern and/or the hopping pattern of the multiplexed features may be determined in a pseudo-random manner.
  • the multiplexing feature index may be determined by at least one of the following parameters: a sub-grid index, that is, a number of sub-frames within a single transmission or a number within a plurality of repeated transmissions; a symbol index; a hop index; a time slot Index; repeated transmission index; system frame number; user identification (UE ID); cell identification (cell ID); beam index (beam ID); the present invention is not limited thereto.
  • FIG. 14 is a schematic diagram of a method of transmitting and receiving information according to an embodiment of the present invention, showing a situation on the network device side. As shown in FIG. 14, the method includes:
  • Step 1403 The network device receives information that is sent by the terminal device in the first time-frequency resource and the second time-frequency resource, or sends information to the terminal device on the first time-frequency resource and the second time-frequency resource.
  • the first time-frequency resource and the second time-frequency resource correspond to a first multiplexing feature and a second multiplexing feature.
  • the first multiplexing feature or the second multiplexing feature may include a NOMA mode and/or a NOMA configuration.
  • the NOMA mode uses at least one of the following resources: power, interleaving, sequence, codeword, resource mapping;
  • the NOMA configuration includes at least one of the following information: bit repetition number information, bit interleaving information, bit scrambling sequence information, symbol plus Scrambling sequence information, bit spreading sequence information, symbol spreading sequence information, codeword information, resource mapping information, modulation information, and code rate information.
  • the method may further include:
  • Step 1401 The network device hops the multiplexing feature used for information transmission or reception according to the hopping information, so as to determine different the first complex for the first time-frequency resource and the second time-frequency resource.
  • the feature and the second multiplexing feature are used.
  • the method may further include:
  • Step 1402 The network device sends the hopping information to the terminal device, where the hopping information is used to indicate a multiplexing feature of one or more time-frequency resources.
  • FIG. 14 only schematically illustrates the embodiment of the present invention, but the present invention is not limited thereto.
  • the order of execution between the various steps can be appropriately adjusted, and other steps can be added or some of the steps can be reduced.
  • Those skilled in the art can appropriately adapt to the above contents, and are not limited to the above description of FIG.
  • the hopping information is determined by a network device.
  • the hopping information is determined by at least one of: a time-frequency resource sub-cell index, a reference signal index, a symbol index, a hop index, a slot index, a repeated transmission index, a system frame number, a user identifier, a cell identifier, and a beam. index.
  • the hopping information is carried by semi-static signaling and/or dynamic signaling.
  • the semi-static signaling includes radio resource control signaling
  • the dynamic signaling includes downlink control information in a physical downlink control channel.
  • the first multiplexing feature and the second multiplexing feature are determined for the first time-frequency resource and the second time-frequency resource; and the first multiplexing feature is sent on the first time-frequency resource. Or receiving information and transmitting or receiving information based on the second multiplexing feature on the second time-frequency resource.
  • the multiplexing feature can be changed within the time-frequency resources of the data transmission, thereby avoiding the performance loss caused by the multiplexing feature collision, and the diversity variation can also obtain the potential diversity gain.
  • Embodiments of the present invention provide an information transmitting and receiving apparatus.
  • the device may be, for example, a terminal device or a component or component of the terminal device.
  • the same contents of the seventh embodiment and the first to fifth embodiments will not be described again.
  • the information transmitting and receiving apparatus 1500 includes:
  • a feature determining unit 1501 configured to determine a first multiplexing feature and a second multiplexing feature for the first time-frequency resource and the second time-frequency resource;
  • the information transceiver unit 1502 sends or receives information based on the first multiplexing feature on the first time-frequency resource, and sends or receives information based on the second multiplexing feature on the second time-frequency resource. .
  • the information transmitting and receiving apparatus 1500 may further include:
  • a hopping unit 1503 configured to hop, according to the hopping information, a multiplexing feature used for information transmission or reception, to determine different first ones for the first time-frequency resource and the second time-frequency resource A multiplexing feature and the second multiplexing feature.
  • the information transceiving unit 1502 is further configured to: receive the hopping information sent by the network device; the hopping information is used to indicate a multiplexing feature of one or more time-frequency resources.
  • the hopping information is determined by the terminal device.
  • the hopping information is determined by at least one of: a time-frequency resource sub-cell index, a reference signal index, a symbol index, a hop index, a slot index, a repeated transmission index, a system frame number, a user identifier, a cell identifier, and a beam. index.
  • the hopping occurs between at least two time-frequency resource sub-frames, or between at least two time slots, or between at least two symbols, or between at least two hops, or at least two Between subcarriers, or between at least two resource blocks.
  • the first time-frequency resource and the second time-frequency resource are used for a single transmission of the information, or the first time-frequency resource and the second time-frequency resource are used for Repeated transmission of the information.
  • the information transmitting and receiving apparatus 1500 may also include other components or modules, and for the specific contents of these components or modules, reference may be made to related art.
  • connection relationship or signal direction between the respective components or modules is exemplarily shown in FIG. 15, but it should be clear to those skilled in the art that various related technologies such as a bus connection can be employed.
  • the above various components or modules may be implemented by hardware facilities such as a processor, a memory, a transmitter, a receiver, etc.; the implementation of the present invention is not limited thereto.
  • the first multiplexing feature and the second multiplexing feature are determined for the first time-frequency resource and the second time-frequency resource; and the first multiplexing feature is sent on the first time-frequency resource. Or receiving information and transmitting or receiving information based on the second multiplexing feature on the second time-frequency resource.
  • the multiplexing feature can be changed within the time-frequency resource of the data transmission, thereby avoiding the performance loss caused by the multiplexing feature collision, and the diversity feature gain can also obtain the potential diversity gain.
  • Embodiments of the present invention provide an information transmitting and receiving apparatus.
  • the device may be, for example, a network device or some or some of the components or components of the network device.
  • the same contents of the eighth embodiment and the first to sixth embodiments will not be described again.
  • the information transmitting and receiving apparatus 1600 includes:
  • the information transceiver unit 1601 receives information sent by the terminal device in the first time-frequency resource and the second time-frequency resource, or sends information to the terminal device on the first time-frequency resource and the second time-frequency resource.
  • the first time-frequency resource and the second time-frequency resource correspond to the first multiplexing feature and the second multiplexing feature.
  • the information transmitting and receiving device 1600 may further include:
  • a hopping unit 1602 that hops multiplexing features for information transmission or reception based on hopping information to determine different first ones for the first time-frequency resource and the second time-frequency resource Multiplexing features and the second multiplexing feature
  • the information transceiving unit 1601 is further configured to: send the hopping information to the terminal device, where the hopping information is used to indicate a multiplexing feature of one or more time-frequency resources.
  • the hopping information is determined by the network device.
  • the hopping information is determined by at least one of: a time-frequency resource sub-cell index, a reference signal index, a symbol index, a hop index, a slot index, a repeated transmission index, a system frame number, a user identifier, a cell identifier, and a beam. index.
  • the hopping information is carried by semi-static signaling and/or dynamic signaling.
  • the semi-static signaling includes radio resource control signaling
  • the dynamic signaling includes downlink control information in a physical downlink control channel.
  • the information transmitting and receiving device 1600 may also include other components or modules, and for the specific content of these components or modules, reference may be made to related art.
  • connection relationship or signal direction between the various components or modules is exemplarily shown in FIG. 16, but it will be apparent to those skilled in the art that various related technologies such as a bus connection can be employed.
  • the above various components or modules may be implemented by hardware facilities such as a processor, a memory, a transmitter, a receiver, etc.; the implementation of the present invention is not limited thereto.
  • the first multiplexing feature and the second multiplexing feature are determined for the first time-frequency resource and the second time-frequency resource; and the first multiplexing feature is sent on the first time-frequency resource. Or receiving information and transmitting or receiving information based on the second multiplexing feature on the second time-frequency resource.
  • the multiplexing feature can be changed within the time-frequency resource of the data transmission, thereby avoiding the performance loss caused by the multiplexing feature collision, and the diversity feature gain can also obtain the potential diversity gain.
  • the embodiment of the present invention further provides a communication system.
  • the communication system 100 can include:
  • a network device 101 configured with the information transmitting and receiving device 1600 as described in Embodiment 8;
  • the terminal device 102 is configured with the information transmitting and receiving device 1500 as described in Embodiment 7.
  • the embodiment of the present invention further provides a network device, which may be, for example, a base station, but the present invention is not limited thereto, and may be other network devices.
  • a network device which may be, for example, a base station, but the present invention is not limited thereto, and may be other network devices.
  • FIG. 17 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • network device 1700 can include a processor 1710 (eg, a central processing unit CPU) and a memory 1720; and a memory 1720 coupled to processor 1710.
  • the memory 1720 can store various data; in addition, a program 1730 for information processing is stored, and the program 1730 is executed under the control of the processor 1710.
  • the processor 1710 can be configured to execute the program 1730 to implement the information transmitting and receiving method as described in embodiment 6.
  • the processor 1710 may be configured to perform the following control: receiving information that is sent by the terminal device in the first time-frequency resource and the second time-frequency resource, or on the first time-frequency resource and the second time-frequency resource. And transmitting information to the terminal device, where the first time-frequency resource and the second time-frequency resource correspond to a first multiplexing feature and a second multiplexing feature.
  • the network device 1700 may further include: a transceiver 1740, an antenna 1750, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the network device 1700 also does not have to include all the components shown in FIG. 17; in addition, the network device 1700 may also include components not shown in FIG. 17, and reference may be made to the prior art.
  • the embodiment of the present invention further provides a terminal device, but the present invention is not limited thereto, and may be other devices.
  • FIG. 18 is a schematic diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device 1800 can include a processor 1810 and a memory 1820; the memory 1820 stores data and programs and is coupled to the processor 1810.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the processor 1810 may be configured to execute a program to implement the information transmitting and receiving methods as described in the embodiments 1 to 5.
  • the processor 1810 may be configured to perform control of determining a first multiplexing feature and a second multiplexing feature for the first time-frequency resource and the second time-frequency resource; and based on the first time-frequency resource
  • the first multiplexing feature transmits or receives information, and transmits or receives information based on the second multiplexing feature on the second time-frequency resource.
  • the terminal device 1800 may further include: a communication module 1830, an input unit 1840, a display 1850, and a power supply 1860.
  • the functions of the above components are similar to those of the prior art, and are not described herein again. It should be noted that the terminal device 1800 does not have to include all the components shown in FIG. 18, and the above components are not necessary; in addition, the terminal device 1800 may further include components not shown in FIG. There are technologies.
  • the embodiment of the present invention further provides a computer program, wherein when the program is executed in a network device, the program causes the network device to perform the information transmitting and receiving method described in Embodiment 6.
  • the embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes the network device to perform the information transmitting and receiving method described in Embodiment 6.
  • the embodiment of the present invention further provides a computer program, wherein the program causes the terminal device to perform the information transmitting and receiving methods described in Embodiments 1 to 5 when the program is executed in the terminal device.
  • the embodiment of the present invention further provides a storage medium storing a computer program, wherein the computer program causes the terminal device to perform the information transmitting and receiving methods described in Embodiments 1 to 5.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the method/apparatus described in connection with the embodiments of the invention may be embodied directly in hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional blocks shown in the figures and/or one or more combinations of the functional blocks may correspond to the various software modules of the computer program flow or to the various hardware modules.
  • These software modules may correspond to the respective steps shown in the figures.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • the software module can reside 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 known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional blocks described in the figures and/or one or more combinations of functional blocks may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional blocks described with respect to the figures and/or one or more combinations of functional blocks may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors One or more microprocessors in conjunction with DSP communication or any other such configuration.
  • a method of transmitting and receiving information including:
  • first multiplexing feature or the second multiplexing feature comprises a non-orthogonal multiple access mode and/or a non-orthogonal multiple access configuration .
  • non-orthogonal multiple access method uses at least one of the following resources: power, interleaving, sequence, codeword, resource mapping.
  • non-orthogonal multiple access configuration comprises at least one of: bit repetition number information, bit interleaving information, bit scrambling sequence information, symbol plus Scrambling sequence information, bit spreading sequence information, symbol spreading sequence information, codeword information, resource mapping information, modulation information, and code rate information.
  • a hopping unit that hops a multiplexing feature for information transmission or reception based on hopping information, to determine different the first complex for the first time-frequency resource and the second time-frequency resource
  • the feature and the second multiplexing feature are used.
  • the hopping information is used to indicate a multiplexing feature of one or more time-frequency resources.
  • the hopping information is determined by at least one of: a time-frequency resource sub-grid index, a reference signal index, a symbol index, a hop index, a time Gap index, repeated transmission index, system frame number, user identification, cell identity, beam index.
  • Supplementary note 11 a method for transmitting and receiving information, comprising:
  • the first time-frequency resource and the second time-frequency resource correspond to a first multiplexing feature and a second multiplexing feature.
  • first multiplexing feature or the second multiplexing feature comprises a non-orthogonal multiple access mode and/or a non-orthogonal multiple access configuration .
  • non-orthogonal multiple access method uses at least one of the following resources: power, interleaving, sequence, codeword, resource mapping.
  • non-orthogonal multiple access configuration comprises at least one of: bit repetition number information, bit interleaving information, bit scrambling sequence information, symbol plus Scrambling sequence information, bit spreading sequence information, symbol spreading sequence information, codeword information, resource mapping information, modulation information, and code rate information.
  • the hopping information is used to indicate a multiplexing feature of one or more time-frequency resources.
  • the hopping information is determined by at least one of: a time-frequency resource sub-grid index, a reference signal index, a symbol index, a hop index, a time Gap index, repeated transmission index, system frame number, user identification, cell identity, beam index.
  • hopping information is carried by semi-static signaling and/or dynamic signaling.
  • the semi-static signaling comprises radio resource control signaling, the dynamic signaling comprising downlink control information in a physical downlink control channel.

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Abstract

La présente invention concerne un procédé et un dispositif de transmission et de réception d'informations, et un système de communication. Le procédé consiste : à déterminer une première signature de multiplexage et une seconde signature de multiplexage destinées à une première ressource temps-fréquence et à une seconde ressource temps-fréquence ; et à transmettre ou à recevoir, sur la base de la première signature de multiplexage, des informations sur la première ressource temps-fréquence, et à transmettre ou à recevoir, sur la base de la seconde signature de multiplexage, des informations sur la seconde ressource temps-fréquence. La présente invention permet de modifier des signatures de multiplexage dans des ressources temps-fréquence utilisées pour la transmission de données, ce qui permet d'empêcher une perte de performance due à une collision de signatures de multiplexage. Un changement de signatures de multiplexage conduit également à un gain de diversité potentiel.
PCT/CN2018/081610 2018-04-02 2018-04-02 Procédé et dispositif de transmission et de réception d'informations, et système de communication WO2019191869A1 (fr)

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US20170288817A1 (en) * 2016-04-01 2017-10-05 Huawei Technologies Co., Ltd. Harq systems and methods for grant-free uplink transmissions
CN107466460A (zh) * 2015-03-23 2017-12-12 Lg 电子株式会社 在无线通信系统中使用非正交多址发送和接收数据的方法和设备

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CN107466460A (zh) * 2015-03-23 2017-12-12 Lg 电子株式会社 在无线通信系统中使用非正交多址发送和接收数据的方法和设备
US20170288817A1 (en) * 2016-04-01 2017-10-05 Huawei Technologies Co., Ltd. Harq systems and methods for grant-free uplink transmissions

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