WO2018171494A1 - Procédé et appareil d'indication de faisceau d'ondes - Google Patents

Procédé et appareil d'indication de faisceau d'ondes Download PDF

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Publication number
WO2018171494A1
WO2018171494A1 PCT/CN2018/079087 CN2018079087W WO2018171494A1 WO 2018171494 A1 WO2018171494 A1 WO 2018171494A1 CN 2018079087 W CN2018079087 W CN 2018079087W WO 2018171494 A1 WO2018171494 A1 WO 2018171494A1
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Prior art keywords
reference signal
signaling
type
communication node
time
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PCT/CN2018/079087
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English (en)
Chinese (zh)
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高波
张淑娟
李儒岳
鲁照华
袁弋非
王欣晖
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams

Definitions

  • the present disclosure relates to the field of communications, for example, to a beam indicating method and apparatus.
  • the ultra-wide bandwidth high frequency band (ie, millimeter wave communication) has become an important direction for the development of mobile communication in the future, attracting the attention of academic and industrial circles around the world.
  • the advantages of millimeter waves have become increasingly attractive when increasingly congested spectrum resources and physical networks are heavily accessed, and standardization efforts have begun in many standards organizations, such as IEEE and 3GPP.
  • 3GPP 3rd Generation Partnership Project
  • high-band communication will become the fifth-generation (5th-generation, 5G) wireless access technology (New Radio) with its significant advantages of large bandwidth.
  • 5G fifth-generation
  • New Radio Access Technology
  • New RAT is an important innovation.
  • high-band communication also faces the challenge of link attenuation, specifically including large loss of propagation path, greater absorption of air absorption (especially oxygen), and heavier effects of rain attenuation. Faced with these challenges, high-band communication systems can take advantage of the high frequency band and short antenna integration, and achieve high antenna gain and signal transmission loss through multi-antenna array and beamforming schemes to ensure link margin. And improve communication robustness.
  • the high frequency band sends the training pilot, and the terminal receives the channel and performs channel estimation. Then, the high-band receiver needs to feed back the channel state information to the training initiator, so that the transceiver can select the weights of multiple groups of transceiver antennas that can be used for multi-channel data transmission. Overall spectral efficiency.
  • the beam indication signaling After the beam indication signaling is sent, the user needs to face a certain decoding delay, beam switching delay, and automatic gain control (AGC) adjustment delay. Therefore, in the millimeter wave communication system, the beam is indicated by the Media Access Control (MAC) layer and is valid after N+X time units. Similarly, when the physical layer indicates the beam, it is also required to take effect after N+Y time units. Between Orthogonal Frequency Division Multiplexing (OFDM) ) symbol, gap (gap) or long preamble sequence), or keep the original transmission mode for transmission. This mode will waste a certain amount of resources, and at the same time, if the previous transmission mode is still used, performance will be lost and the burden of system design and scheduling will be increased.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the present disclosure provides a beam indication method and apparatus, which can at least solve the problem of resource waste caused by a blank window when a beam is indicated in the related art.
  • a method for waste of resources caused by a blank window when a beam indication includes: generating a first type of signaling, where the first type of signaling includes: the first type of signaling is associated
  • a beam indicating method includes transmitting signaling to a first communication node, wherein the signaling is set to indicate a transmission time interval or a minimum time interval of: the first communication node transmitting the first to the second communication node over the control channel Class-type signaling, wherein the first type of signaling includes: mapping relationship between a set of Q demodulation reference signal antenna ports of the data channel associated with the first type of signaling and K reference signal related information, and mapping The demodulation reference signal antenna port set and the reference signal related information of the relationship satisfy the quasi co-location assumption, Q and K are integers greater than or equal to 1; and the first communication node transmits data to the second communication node through the data channel.
  • a beam indicating device applied to a first communication node, the device comprising: a generating module configured to generate a first type of signaling, wherein the first type of signaling comprises: The mapping relationship between the Q demodulation reference signal antenna port sets of the data channel associated with the first type of signaling and the K reference signal related information, the demodulation reference signal antenna port set and the reference signal related information having the mapping relationship satisfy the quasi-co-
  • the address assumes that Q and K are integers greater than or equal to 1; the first sending module is configured to send the first type of signaling through a control channel; and the second sending module is configured to be associated by the first type of signaling The data channel sends data.
  • a beam indicating device which is applied to a second communication node, the device comprising: a third transmitting module, configured to send signaling to the first communications node, wherein the signaling is used for And indicating a sending time interval or a minimum time interval of the following: the first communications node sends the first type of signaling to the second communications node by using the control channel, where the first type of signaling includes: the first type of signaling
  • the mapping relationship between the Q demodulation reference signal antenna port sets and the K reference signal related information of the associated data channel, the demodulation reference signal antenna port set and the reference signal related information having the mapping relationship satisfy the quasi co-location assumption, Q And K are integers greater than or equal to 1; the first communication node transmits data to the second communication node through the data channel.
  • a storage medium is also provided.
  • the storage medium is set to store program code set to perform the following steps:
  • the first type of signaling includes: mapping relationship between a set of Q demodulation reference signal antenna ports of the data channel associated with the first type of signaling and K reference signal related information a demodulation reference signal antenna port set having a mapping relationship and reference signal related information satisfying a quasi co-location assumption, Q and K are integers greater than or equal to 1; transmitting the first type of signaling through a control channel; The data channel associated with a type of signaling transmits data.
  • the storage medium is further arranged to store program code for performing the following steps:
  • the first type of signaling includes: mapping relationship between a set of Q demodulation reference signal antenna ports of the data channel associated with the first type of signaling and K reference signal related information, and demodulation with a mapping relationship
  • the reference signal antenna port set and the reference signal related information satisfy the quasi co-location assumption, Q and K are integers greater than or equal to 1; the first communication node transmits data to the second communication node through the data channel.
  • the present disclosure solves the problem of resource waste caused by a blank window when the beam is indicated in the related art, and improves the flexibility of beam indication transmission.
  • FIG. 1 is a flowchart of a beam indication method according to the present embodiment
  • FIG. 2a is a schematic structural diagram of uplink and downlink control channels and data channels in a Frequency Division Duplexing (FDD) system according to this embodiment;
  • FDD Frequency Division Duplexing
  • 2b is a schematic structural diagram of a self-contained frame according to the embodiment.
  • 2c is a schematic structural diagram of another self-contained frame according to the embodiment.
  • FIG. 3 is a schematic diagram of a frame structure of a beam indication according to the embodiment.
  • FIG. 4 is a schematic diagram 1 of a beam indication structure according to this embodiment.
  • FIG. 5 is a second schematic diagram of beam indication under a set of time slots according to the present embodiment.
  • FIG. 6 is a schematic structural diagram of a time period for utilizing a handover delay according to the embodiment.
  • FIG. 7 is another schematic diagram of a structure for utilizing a handover delay time end according to the present embodiment.
  • FIG. 8a is a schematic structural diagram of a QCL association reference signal according to the embodiment.
  • FIG. 8b is a schematic structural diagram of a QRP-related reference signal based on a TRP configuration according to the present embodiment
  • 8c is a schematic structural diagram 1 of a QCL-related reference signal based on a TRP configuration according to the embodiment
  • FIG. 9 is a schematic structural diagram of performing an interval indication for an uplink data channel according to the embodiment.
  • FIG. 10 is a flowchart of another beam indication method according to this embodiment.
  • Figure 11 is a block diagram showing the structure of a beam pointing device according to the present embodiment.
  • Fig. 12 is a block diagram showing the structure of another beam pointing device according to the present embodiment.
  • FIG. 1 is a flowchart of a beam indicating method according to the embodiment. As shown in FIG. 1 , the method includes the following steps: Step 102 - Step 106.
  • a first type of signaling is generated, where the first type of signaling includes: a set of Q demodulation reference signal antenna ports of the data channel associated with the first type of signaling, and K reference signal related information.
  • the mapping relationship, the demodulation reference signal antenna port set and the reference signal related information having the mapping relationship satisfy the quasi co-location assumption, and both Q and K are integers greater than or equal to 1; in an embodiment, the reference signal related information includes: Signal resource set configuration, reference signal resource set, reference signal resource, reference signal antenna port, beam packet, receive beam set, and antenna set.
  • Step 104 Send the first type of signaling by using a control channel.
  • Step 106 Send data by using a data channel associated with the first type of signaling.
  • the execution body of the above steps comprises: a first communication node, such as a base station.
  • the first communication node generates the first type of signaling, where the first type of signaling includes: the Q demodulation reference signal antenna port sets of the data channel associated with the first type of signaling and the K The mapping relationship of reference signal related information.
  • the demodulation reference signal antenna port set and the reference signal related information having the mapping relationship satisfy the quasi co-location assumption, and Q and K are integers greater than or equal to 1;
  • the first communication node sends the first type signaling through the control channel;
  • a communication node transmits data through a data channel associated with the first type of signaling. That is to say, the resource of the user who performs the beam indication on the data channel is reasonably scheduled, which solves the problem of waste of resources caused by the blank window when the beam is indicated in the related art, and improves the flexibility of the beam indication transmission.
  • the base station performs a method for reasonably scheduling the resources of the user indicated by the beam on the data channel, so as to effectively utilize the blank window caused by the beam indication decoding and the beam switching.
  • the method includes: time domain resource bundling, beam indication signaling scheduling adopts preferential demodulation of OFDM/DFT-S-OFDM symbols, and demodulation reference signals of other users are scheduled before the beam indicates the associated data channel. And the method of transmitting the reference signal.
  • the reference signal related information belongs to an element in a reference signal related information set, wherein the reference signal related information set is configured by the first communication node.
  • the reference signal related information belongs to an element in the subset of reference signal related information sets activated by the first communication node, wherein the reference signal related information set is configured by the first communication node.
  • the above reference signal related information satisfies a constraint, wherein the constraint includes at least one of: configuration, order, and time.
  • the foregoing constraint condition satisfies at least one of: N1 reference signal resources recently transmitted from the first communication node; and N2 first reference signal resources sent from the first communication node to the second communication node.
  • control channel includes an A time domain unit and a B time domain unit, wherein the A time domain unit is ahead of the B time domain unit. Scheduling the A time domain unit to carry the first type of signaling; or instructing, by the second communication node, the first type of signaling to be sent by the A time domain unit bearer; or indicating, by the second communication node, the first type The signaling is not transmitted through the B time domain unit bearer.
  • Each time domain unit includes at least one time domain symbol, or one sub-time domain symbol after a time domain symbol is divided.
  • the data channel includes a C time domain unit and a D time domain unit, wherein the C time domain unit is ahead of the D time domain unit.
  • the data channel associated with the first type of signaling is carried by the D time domain unit; or the data channel associated with the first type of signaling is indicated by the second communication node to be carried by the C time domain unit; or, by the second communication node
  • the data channel associated with the first type of signaling is not carried by the D unit.
  • Each time domain unit includes at least one time domain symbol, or one sub-time domain symbol after a time domain symbol is divided.
  • the time domain range occupied by the C time domain unit and the D time domain unit is less than or equal to the time domain range of the data channel.
  • the data channel associated with the first type of signaling may be configured by mini-slot mini-slot; in one embodiment, mini-slot based on mini-slot mini-slot configuration constraints
  • the data channel associated with the first type of signaling is configured.
  • the constraint on the mini-slot configuration of the mini-slot may include the data associated with the first type of signaling carried by the mini-slot mini-slot and the first type of signaling carried by the mini-slot mini-slot.
  • the definition of the time interval between channels may be configured by mini-slot mini-slot; in one embodiment, mini-slot based on mini-slot mini-slot configuration constraints
  • the data channel associated with the first type of signaling is configured.
  • the constraint on the mini-slot configuration of the mini-slot may include the data associated with the first type of signaling carried by the mini-slot mini-slot and the first type of signaling carried by the mini-slot mini-slot.
  • the C time domain unit carries a demodulation reference signal port associated with the second communication node, or a channel state information reference signal of the multi-shot/interleaved frequency division multiple access (IFDMA) associated with the second communication node ( Channel state information reference signal (CSI-RS) port, or demodulation reference signal.
  • IFDMA channel state information reference signal
  • CSI-RS Channel state information reference signal
  • the first time domain symbol in the time domain of the data channel associated with the first type of signaling carries a demodulation reference signal or a CSI-RS.
  • the data channel associated with the first type of signaling carries a demodulation reference signal.
  • the demodulation reference signal or CSI-RS carried by the first OFDM symbol described above uses interleaved frequency division multiple access IFDMA, or a different numerology from the data unit, or a wider subcarrier width than the data unit.
  • the first demodulation reference signal or CSI-RS may occupy all of the time domain symbols; other demodulation reference signals other than the first demodulation reference signal occupy only part of the time domain symbols.
  • the minimum time interval between the first type of signaling and the data channel of the second communication node to which the first type of signaling is followed is X time units, if X is greater than or equal to or greater than or equal to When the threshold X1 is used, the first type of signaling is associated with the data channel; if X is less than the threshold X1, the first type of signaling is associated with the data channel of the second communication node of the Uth time slot;
  • the time slot is a transmission time interval TTI or slot, and the time unit is at least one of the following: blank interval gap, OFDM/DFT-S-OFDM (Discrete Fourier Transform-Spread-OFDM, discrete Fourier transform spread spectrum orthogonal frequency Sub-multiplexed) symbols, mini-slots, slots, and Transmission Time Interval (TTI); X, X1, and U are integers greater than or equal to 1.
  • the data channel of the second communication node to which the first type of signaling is directed needs to be sent in the L+P time unit and at a later time, and the first type of signaling This data channel will be valid, where L and P are integers greater than or equal to one.
  • V time slots When V time slots are bound into a set of time slots and there is a first type of signaling in the set of time slots, the first type of signaling will take effect after the time slot set; or, through the data channel to the second
  • the communication node sends the data channel associated with the first type of signaling, and is located in the Zth time slot set after the bound time slot set occupied by the first type of signaling; where V and Z are integers greater than or equal to 1.
  • the first time slot after the set of bound time slots occupied by the first type of signaling is set to the data channel of the Z-1 time slot set to maintain the beam unchanged, or
  • a communication node sends a beam of a control channel of the first type of signaling to the second communication node, or a beam configured according to a higher layer, wherein the higher layer is configured as a Media Access Control-Control Element (MAC-) CE) or Radio Resource Control (RRC) signaling configuration.
  • MAC- Media Access Control-Control Element
  • RRC Radio Resource Control
  • the first type of signaling exists in the set of time slots, and the first type of signaling will take effect after the set of time slots.
  • the data channel associated with the first type of signaling is sent to the second communication node through the data channel, and is located in the Zth time slot set after the bound time slot set occupied by the first type of signaling.
  • the value of Z is determined according to the number of slots in the set of slots.
  • the interval between the uplink data channel and the downlink control channel is from a set of intervals.
  • the interval is the V1 interval with the longest time domain in the interval set; or the first communication node is instructed by the second communication node to use the V1 interval with the longest time domain in the interval set; or the first communication node indicates the first
  • the communication node does not use the shortest V2 intervals in the time domain in the interval set, where V1 and V2 are integers greater than or equal to 1.
  • the interval between the uplink data channel and the downlink control channel associated with the first type of signaling is a predefined interval.
  • the predefined is defined by a protocol or pre-configured by higher layer signaling.
  • the first communication node corresponds to a base station, a gNB (5G base station) or a TRP
  • the second channel node corresponds to a User Equipment (UE).
  • IFDMA means that the subcarriers occupied by the user are evenly distributed on the transmission band. If there is only one user or broadcast to a group of users, there are only values on the subcarriers associated with the user or group of users, and other subcarriers may be 0 power.
  • the data channel includes a data unit and a reference signal
  • the control channel includes a Physical Downlink Control Channel (PDCCH) and a Physical Uplink Control Channel (PUCCH);
  • the signaling is associated with the data channel, and the signal is For the reference signal on the data channel or the data channel to be valid;
  • the associated data channel refers to a data channel in which the first type of signaling acts, wherein the associated method includes directly establishing the
  • the relationship indication of a type of signaling and the applied data channel also includes a time-frequency window for establishing a valid effect of the first signaling.
  • the time-frequency window includes: a start time and a valid time interval in which the first type of signaling indication signaling takes effect, or the first type of signaling only indicates a start time in which the signaling is effective, and the first type of signaling will continue to take effect. Until the next transmission of the first type of signaling takes effect.
  • the reference signal includes at least one of the following: a Cell Reference Signal (CRS), a CSI-RS, a channel management information reference signal for beam management, and a Channel State Information-interference measurement (CSI-IM). ), Demodulation Reference Signal (DMRS), downlink demodulation reference signal, uplink demodulation reference signal, Sounding Reference Signal (SRS), Phase-tracking reference signal (Phase-tracking reference signals) -RS), mobile related reference signal (MRS), beam reference signal (Bam Reference Signal, BRS), Beam Refinement Reference Signal (BRRS), random access channel (RACH) signal, Synchronization Signal (SS), Synchronization Signal Block (SS block), Primary Synchronization Signal (PSS), and Secondary Synchronization Signal (SSS).
  • CRS Cell Reference Signal
  • CSI-RS Channel Management information reference signal for beam management
  • CSI-IM Channel State Information-interference measurement
  • DMRS Demodulation Reference Signal
  • SRS Sounding Reference Signal
  • Phase-tracking reference signal Phase-tracking reference signals
  • the characteristics of the above channels include physical propagation channel characteristics, such as horizontal transmission azimuth, vertical transmission azimuth, horizontal reception azimuth, vertical reception azimuth, etc., and also include radio frequency and baseband circuit characteristics, such as antenna pattern, Antenna group, sky plane board, antenna subarray, transmitting and receiving unit (TXRU), receiving beam set, antenna placement, baseband time offset, frequency offset and phase noise.
  • physical propagation channel characteristics such as horizontal transmission azimuth, vertical transmission azimuth, horizontal reception azimuth, vertical reception azimuth, etc.
  • radio frequency and baseband circuit characteristics such as antenna pattern, Antenna group, sky plane board, antenna subarray, transmitting and receiving unit (TXRU), receiving beam set, antenna placement, baseband time offset, frequency offset and phase noise.
  • the beam may be a resource (eg, originating precoding, terminating precoding, antenna port, antenna weight vector, antenna weight matrix, etc.), and the beam symbol may be replaced by a resource index, because the beam may be combined with some time-frequency code resources.
  • the beam may also be a transmission (transmit/receive) mode; the transmission mode may include space division multiplexing and frequency domain/time domain diversity.
  • the above beam indication means that the transmitting end can satisfy the quasi-co-location (QCL) assumption by using the current reference signal and the antenna port, and the base station scanning or the reference signal (or reference reference signal) reported by the UE feedback and the antenna port. To give instructions.
  • QCL quasi-co-location
  • the receiving beam refers to a beam at the receiving end that does not need to be indicated, or the transmitting end can scan the reference signal (or reference reference signal) and the quasi-co-location of the antenna port (QCL) through the current reference signal and the antenna port, and the base station scans or the UE feedback report.
  • the beam resource of the receiving end under the indication.
  • the parameters involved in the quasi-co-location include at least Doppler spread, Doppler shift, delay spread, average delay and average gain; and may also include spatial parameter information such as angle of arrival, space of the receive beam Correlation, average delay and correlation of time-frequency channel response (including phase information).
  • a slot unit includes two parts, a control channel and a data channel.
  • the control channel can be divided into an uplink control channel (PUCCH) and a downlink control channel (PDCCH), and the data channel includes a physical uplink shared channel (PUSCH) and a physical downlink shared channel (PDSCH).
  • the PUCCH and the PUSCH constitute an uplink channel
  • the PDCCH and the PDSCH constitute a downlink channel.
  • a channel may be combined by two possible combinations: PDCCH, PDSCH, Gap, and PUCCH; PDCCH, Gap, PUSCH, and PUCCH;
  • the control channel includes two time domain regions A and B, where A is ahead of B, and similarly, the data channel is divided into two time domain regions C and D, and C is advanced by D.
  • the time domain resolution granularity of distinguishing A, B, C, and D is OFDM symbol or DFT-S-OFDM.
  • smaller time domain resolved granularity such as fractional time domain resolved granularity, is included, where the approach implemented includes the use of IFDMA or wider subcarriers (different numerology).
  • FIG. 2b is a schematic structural diagram of a self-contained frame, that is, PDCCH, PDSCH, Gap, and PUCCH according to the present embodiment.
  • the downlink control channel is divided into two areas A and B (A time domain is ahead of B); for the downlink data channel, it is divided into two areas C and D (C time domain is earlier than D).
  • 2c is a schematic structural diagram of another self-contained frame according to the present embodiment, namely, PDCCH, Gap, PUSCH, and PUCCH.
  • PDCCH Physical Downlink Control Channel
  • Gap Physical Downlink Control Channel
  • PUSCH Physical Uplink Control Channel
  • PUCCH Physical Uplink Control Channel
  • the first type of signaling includes indication information: an antenna port set of a demodulation reference signal of a data channel associated with the first type of signaling, and a reference signal related information.
  • the first type of signaling includes indication information: an antenna port set of a demodulation reference signal of a data channel associated with the first type of signaling, and a reference signal related information.
  • the QCL quasi co-location
  • FIG. 4 is a first schematic diagram of a beam indication structure according to the present embodiment, wherein A, B, and C regions respectively correspond to 1 OFDM symbol, and the first type of signaling is carried by the first OFDM symbol.
  • the data channel associated with the first type of signaling begins with the fourth OFDM.
  • the B area carries control signaling of other users
  • the C area carries the demodulation reference signal DMRS of the service and other users.
  • the first and second OFDM symbols of the data channel carry front-loaded DMRS symbols, wherein the DMRS port does not use Orthogonal Cover Code (OCC)/code division Use (Code Division Multiplexing, CDM). Therefore, the system can allocate the OFDM ports of other users to the DMRS ports on the first OFDM, and the DMRS ports on the second OFDM symbols are allocated to the users of the first type of signaling.
  • OFC Orthogonal Cover Code
  • CDM Code Division Multiplexing
  • a method of implementing a data channel indication for D includes puncturing, and using mini-slot signaling to divide a particular time domain region of the slot to a particular user.
  • FIG. 5 is a second schematic diagram of beam indication under a set of time slots according to the present embodiment.
  • the TRP configures slot bundling to the UE, while the beam in the bundling remains unchanged. Therefore, the set of time slots becomes the smallest unit of beam switching.
  • the TRP sends a first type of signaling to the UE; this signaling will take effect on the i+jth time slot set slot bundling. For example, once in effect, the first type of signaling will remain in effect until the next indication of an update, or for the first type of signaling to be valid for x time slot sets, and then expire.
  • the beam for i+1 to i+j-1 time slots can be kept unchanged according to the beam under the i-slot, or the beamforming can be implemented according to the configuration preset by the upper layer.
  • FIG. 6 is a schematic diagram showing the structure for utilizing a handover delay period according to the present embodiment.
  • a wider subcarrier, IFDMA or multishot CSI-RS, or a wider subcarrier, IFDMA or multishot DMRS is embedded and sent to the first Class signaling users or other users.
  • These reference signals can be used for AGC adjustment or beam training due to multiple repetitions or shorter time domain resolvable particles in the time domain unit.
  • FIG. 7 is another schematic diagram of the structure for utilizing the handover delay time end according to the present embodiment.
  • the data channel associated with the first type of signaling can be directly connected to the downlink control channel, that is, there is no C area in FIG.
  • the data channel associated with the first type of signaling needs to use the IFDMA/Multi-shot DMRS reference signal.
  • the symbols in which multiple time domains are repeated can be used for the adjustment of the user's AGC and to alleviate the decoding delay.
  • the DMRS can occupy the entire bandwidth, or it can be the bandwidth allocated by the user or the physical resource block (PRB).
  • PRB physical resource block
  • the first type of signaling indicates N reference signal resources that are newly transmitted/configured by the first communication node.
  • the N reference signal resources are numbered, for example, the start of the first transmitted reference signal is sequentially encoded from zero to high.
  • the DCI indication format of the QCL associated reference signal is as follows:
  • the constraint information for the reference signal further includes one or a combination of the contents described in the following paragraphs, and according to the constraint information, the reference signal set, the reference signal resource and the reference signal port are respectively coded for the reference signal resource setting. Or joint coding.
  • FIG. 8(b) is a schematic structural diagram of a QCL-related reference signal based on a TRP configuration according to the present embodiment.
  • the TRP configures a set of antenna ports under the reference signal resource, and encodes elements in the set, and informs the UE (RRC or MAC-CE signaling) through higher layer signaling.
  • the UE RRC or MAC-CE signaling
  • the first type of signaling carries the corresponding sequence number to indicate the beam of the downlink control channel.
  • FIG. 8c is a schematic structural diagram 1 of a QCL-related reference signal based on a TRP configuration according to the present embodiment.
  • the TRP configures the antenna port set under the reference signal resource to the user through the high layer signaling, and then the TRP selects some elements in the set to activate or select to form a new subset according to the actual data transmission needs, and encodes. Then, the coding of the antenna port of the reference signal resource associated with the QCL indicated by the first type of signaling is used to implement beam indication.
  • FIG. 9 is a schematic structural diagram of an interval indication for an uplink data channel according to the embodiment.
  • the set of intervals for the downlink and uplink channels includes four configurations, such as 83.3us, 166.7us, and 333.3us. If the first type of signaling is carried, the user wants the base station to use two intervals with a longer time domain in the interval set, for example, 166.7 us and 333.3 us; or, the user does not want the base station to use the shortest time interval in the interval set, for example, 83.3us.
  • the interval set of the downlink and uplink channels may be protocol-predetermined, or the base station may be pre-configured through high-layer signaling.
  • a method for reasonably scheduling resources of a user that performs beam indication on a data channel is utilized to effectively utilize a blank window caused by beam indication decoding and beam switching.
  • the method includes: time domain resource bundling, beam indication signaling scheduling, method of transmitting a reference signal before preferentially demodulating OFDM/DFT-S-OFDM symbols, and other user's demodulation reference signals scheduling the beam indicating associated data channels .
  • the problem of resource waste caused by the blank window can be effectively solved, and the flexibility of the beam indication cooperation transmission scheme is improved; at the same time, the resources between multiple users are performed by the protocol specification and the implicit indication method.
  • the method according to the foregoing embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware.
  • the technical solution of the present disclosure which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM). Including a plurality of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in the various embodiments.
  • FIG. 10 is a flowchart of another beam indication method according to this embodiment. As shown in FIG. 10, the method includes the following steps:
  • Step 1002 Send signaling to the first communications node, where the signaling is used to indicate a sending time interval or a minimum time interval of:
  • the first communication node sends the first type of signaling to the second communication node by using the control channel, where the first type of signaling includes: the Q demodulation reference signal antenna port sets of the data channel associated with the first type of signaling a mapping relationship between information related to K reference signals, a demodulation reference signal antenna port set having a mapping relationship, and reference signal related information satisfying a quasi co-location assumption, and Q and K are integers greater than or equal to 1;
  • the first communication node transmits data to the second communication node over the data channel.
  • the second communication node comprises a UE.
  • the UE sends signaling to the first communications node, where the signaling is used to indicate a sending time interval or a minimum time interval of the following content: the first communications node sends the first class to the second communications node through the control channel.
  • Signaling where the first type of signaling includes: mapping relationship between a set of Q demodulation reference signal antenna ports of the data channel associated with the first type of signaling and K reference signal related information, and a mapping relationship
  • the reference signal antenna port set and the reference signal related information satisfy the quasi co-location assumption, Q and K are integers greater than or equal to 1; the first communication node transmits data to the second communication node through the data channel. That is to say, the resource of the user who performs the beam indication on the data channel is reasonably scheduled, which solves the problem of waste of resources caused by the blank window when the beam is indicated in the related art, and improves the flexibility of the beam indication transmission.
  • data is transmitted to the second communication node over the data channel associated with the first type of signaling.
  • the minimum interval time is 1/N time domain symbols, or time slots, or a set of time slots, where N is an integer greater than or equal to 1; the time slot is TTI or slot.
  • the interval information is implicitly indicated by the following parameters: communication frequency, communication bandwidth, support for self-contained subframes, and support for multiple numerologies.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in the various embodiments.
  • a beam indicating device is also provided in this embodiment, and the device is used to implement the foregoing embodiment, and the description has been omitted.
  • the term "module" may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments may be implemented in software, or may be implemented by hardware, or a combination of software and hardware.
  • FIG. 11 is a structural block diagram of a beam pointing device according to the present embodiment. As shown in FIG. 11, the device includes:
  • the generating module 112 is configured to generate the first type of signaling, where the first type of signaling includes: the Q demodulation reference signal antenna port sets of the data channel associated with the first type of signaling are related to K reference signals
  • the mapping relationship of the information, the demodulation reference signal antenna port set and the reference signal related information having the mapping relationship satisfy the quasi co-location assumption, and Q and K are integers greater than or equal to 1;
  • the first sending module 114 is configured to send the first type of signaling by using a control channel
  • the second sending module 116 is configured to send data through a data channel associated with the first type of signaling.
  • the device shown in FIG. 11 solves the problem of resource waste caused by the blank window when the beam is indicated in the related art, and improves the flexibility of the beam indication transmission.
  • the reference signal related information includes at least one of: a reference signal resource set configuration, a reference signal resource set, a reference signal resource, a reference signal antenna port, a beam packet, a receive beam set, and an antenna set.
  • the plurality of modules may be implemented by software or hardware.
  • the modules may be implemented in the same manner: the modules are located in different processors in any combination; in.
  • a beam indicating device is also provided in this embodiment, and the device is used to implement the foregoing embodiment, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments may be implemented in software, or may be implemented by hardware, or a combination of software and hardware.
  • FIG. 12 is a structural block diagram of another beam indicating apparatus according to this embodiment. As shown in FIG. 12, the apparatus includes:
  • the sending module 122 is configured to send signaling to the first communications node, where the signaling is used to indicate a sending time interval or a minimum time interval of two adjacent first type signaling:
  • the first communication node sends the first type of signaling to the second communication node by using the control channel, where the first type of signaling includes: Q demodulation reference signal antenna ports of the data channel associated with the first type of signaling
  • Q demodulation reference signal antenna ports of the data channel associated with the first type of signaling The mapping relationship between the set information and the K reference signal related information, the demodulation reference signal antenna port set and the reference signal related information having the mapping relationship satisfy the quasi co-location assumption, and both Q and K are integers greater than or equal to 1.
  • And receiving module 123 configured to receive data sent by the first communication node through a data channel.
  • the minimum interval time is in units of 1/N time domain symbols, or time slots, or time slot sets, where N is an integer greater than or equal to 1; the time slot is TTI or slot.
  • the interval information is implicitly indicated by the following parameters: communication frequency, communication bandwidth, support for self-contained subframes, and support for multiple numerologies.
  • This embodiment also provides a storage medium.
  • the above storage medium may be configured to store program code for performing the following steps:
  • the first type of signaling includes: mapping relationship between a set of Q demodulation reference signal antenna ports of the data channel associated with the first type of signaling and K reference signal related information
  • the demodulation reference signal antenna port set and the reference signal related information having a mapping relationship satisfy the quasi co-location assumption, and Q and K are integers greater than or equal to 1;
  • the storage medium is further configured to store program code for performing the following steps:
  • the first type of signaling includes: mapping relationship between a set of Q demodulation reference signal antenna ports of the data channel associated with the first type of signaling and K reference signal related information, and a demodulation reference signal having a mapping relationship
  • the antenna port set and the reference signal related information satisfy the quasi co-location assumption, and both Q and K are integers greater than or equal to 1; the first communication node transmits data to the second communication node through the data channel.
  • the foregoing storage medium may include: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • mobile hard disk a magnetic disk
  • magnetic disk a magnetic disk
  • optical disk a medium in which the program code is stored.
  • the processor performs steps S1, S2, and S3 described above based on stored program code in the storage medium.
  • the processor performs the above step S4 in accordance with the stored program code in the storage medium.
  • modules or steps of the present disclosure described above may be implemented in a general-purpose computing device, which may be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into a plurality of integrated circuit modules, or a plurality of the modules or steps are fabricated as a single integrated circuit module.
  • the beam indication method provided by the present disclosure solves the problem of resource waste caused by a blank window when the beam is indicated in the related art, and improves the flexibility of beam indication transmission.

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

Abstract

L'invention concerne un procédé d'indication de faisceau d'ondes. Le procédé consiste à : générer une signalisation d'un premier type, la signalisation du premier type comprenant une relation de mappage entre Q ensembles de ports d'antenne de signal de référence de démodulation d'un canal de données associé à la signalisation du premier type et K éléments d'informations relatives à un signal de référence, les ensembles de ports d'antenne de signal de référence de démodulation et les informations relatives à un signal de référence ayant une relation de mappage satisfont une hypothèse de quasi-colocalisation, et Q et K sont tous les deux des entiers supérieurs ou égaux à 1 ; envoyer la signalisation du premier type via un canal de commande ; et envoyer des données via le canal de données associé à la signalisation du premier type.
PCT/CN2018/079087 2017-03-24 2018-03-15 Procédé et appareil d'indication de faisceau d'ondes WO2018171494A1 (fr)

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