WO2016070675A1 - Procédé et dispositif d'envoi et de réception d'informations de liaison descendante - Google Patents

Procédé et dispositif d'envoi et de réception d'informations de liaison descendante Download PDF

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Publication number
WO2016070675A1
WO2016070675A1 PCT/CN2015/088055 CN2015088055W WO2016070675A1 WO 2016070675 A1 WO2016070675 A1 WO 2016070675A1 CN 2015088055 W CN2015088055 W CN 2015088055W WO 2016070675 A1 WO2016070675 A1 WO 2016070675A1
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Prior art keywords
information
narrowband
scheduling
user
specific
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PCT/CN2015/088055
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English (en)
Chinese (zh)
Inventor
石靖
夏树强
戴博
方惠英
刘锟
陈宪明
张雯
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中兴通讯股份有限公司
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Publication of WO2016070675A1 publication Critical patent/WO2016070675A1/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 present invention relates to the field of communications, and in particular, to a downlink information transmission method and a downlink information receiving method and apparatus.
  • Machine Type Communication (MTC) User Equipment also known as Machine to Machine (M2M) user communication equipment
  • MTC Machine Type Communication
  • UE User Equipment
  • M2M Machine to Machine
  • LTE/LTE-A Long-Term Evolution/Long-Term Evolution Advance
  • MTC multi-class data services based on LTE/LTE-A will also be more attractive.
  • the terminal first receives the primary and secondary synchronization signals (Priss Synchronization Signal/Secondary Synchronization Signal, PSS/SSS) and the Broadcast Channel (Physical Broadcast Channel, PBCH for short) in the downlink direction. ), both at the center of the system bandwidth.
  • PSS/SSS Primary and secondary Synchronization Signal/Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the scheduling mode of the LTE/LTE-A system is based on dynamic scheduling of each subframe, that is, each subframe can transmit different control channels.
  • a physical downlink control channel Physical Downlink Control Channel, PDCCH for short
  • an Enhanced Physical Downlink Control Channel (EPDCCH) are defined in LTE/LTE-A.
  • Both the PDCCH and the EPDCCH may be scheduled to transmit downlink and uplink data information by indicating a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH for short) and a physical uplink shared channel (PUSCH).
  • a physical downlink shared channel Physical Downlink Shared Channel, PDSCH for short
  • PUSCH physical uplink shared channel
  • the occupancy of each channel resource in a downlink subframe of an existing LTE/LTE-A system is as follows:
  • the first Orthogonal Frequency Division Multiplexing (OFDM) symbol of the bandwidth, the EPDCCH and the PDSCH occupy part of the bandwidth in a frequency division multiplexing manner, that is, a part of a physical resource block (Physical Resource Block, PRB for short).
  • the resource is located on the OFDM symbol after the PDCCH.
  • the downlink control channel adopts blind detection, and the terminal attempts to demodulate the downlink control channel with different aggregation levels and candidate sets in a certain search space.
  • the existing search space is as shown in Table 1 and Table 2.
  • the search space is composed of candidate sets corresponding to different aggregation levels, and is divided into a common search space (CSS) and a user-specific search space (UE-specific).
  • the search space (referred to as USS) respectively corresponds to the control information for scheduling the public information of the cell and the control information for scheduling the exclusive information.
  • the terminal demodulates the control channel, it needs to try to demodulate each candidate set until the demodulation is correct. Otherwise, it is considered that no control channel belongs to itself.
  • the PDCCH search space is shown in Table 1.
  • the EPDCCH search space (USS) is shown in Table 2.
  • the PDCCH/EPDCCH is used to carry downlink control information (Downlink Control Information, DCI for short), and includes: uplink and downlink scheduling information, and uplink power control information.
  • DCI Downlink Control Information
  • the MTC terminal can obtain DCI by demodulating the PDCCH/EPDCCH channel in each subframe in order to obtain information required for demodulation of the PDSCH and scheduling indication information of the PUSCH.
  • a significant requirement in MTC application terminals is the lower cost.
  • One of the current methods for reducing the cost is to reduce the receiving bandwidth of the MTC terminal.
  • the ordinary terminal still uses the system bandwidth as the receiving bandwidth
  • the MTC terminal uses 1.4 MHz as the receiving bandwidth.
  • the MTC terminals use narrowband receive bandwidth, the total resources available are very limited.
  • the narrowband reception bandwidth used by the MTC terminal is smaller than the system bandwidth, the PDCCH cannot work.
  • the EPDCCH is used, the synchronization signal and the broadcast channel can be received at the central bandwidth when initially accessing the network, but then the cell public message and the corresponding control channel are received.
  • the narrowband location terminal is not known, Unless the system bandwidth is exactly equal to the narrowband bandwidth supported by the MTC terminal. Therefore, when the system bandwidth is large, it is necessary to determine the control channel required for initial access and the narrowband position where the corresponding traffic channel is located. To ensure that the system bandwidth is sufficient for the bandwidth reduction of the MTC terminal.
  • the embodiment of the invention provides a downlink information transmission and downlink information receiving method and device, so as to at least the problem that the downlink information cannot be received in the bandwidth limited scenario in the technology.
  • a downlink information sending method includes: grouping channels carrying different downlink information; and allocating the grouped channels to narrowband resources for transmission.
  • allocating the grouped channel to the narrowband resource includes transmitting at least one of: allocating channels in the same packet to the same narrowband resource, and allocating channels in different packets to the same narrowband resource. Sent on different time domain resources.
  • the time domain resource includes at least one of the following units: a subframe, a field, and a radio frame.
  • the narrowband resource is a resource in N narrowbands segmented in a system bandwidth, where N is greater than or equal to 1.
  • each of the narrowband resources is: 5 physical resource blocks PRB, 6PRB, 15PRB or 25PRB.
  • the downlink information includes at least one of the following: synchronization information, broadcast information, cell public information, downlink user-specific information, control information for scheduling cell public information, control information for scheduling downlink user-specific information, and scheduling uplink users. Control information for proprietary information.
  • assigning the grouped channel to the narrowband resource to transmit includes at least one of: a channel carrying synchronization information and/or broadcast information is transmitted on a narrowband of a system bandwidth center; using signaling configuration or a predefined manner
  • the determined narrowband resource sends at least one of the following: bearer cell public information, downlink user proprietary information, control information for scheduling cell public information, channel for scheduling control information of downlink user proprietary information, and control of scheduling uplink user proprietary information The channel of information.
  • the signaling configuration includes at least one of the following: broadcast signaling, system message signaling, and physical layer signaling; the predefined manner includes determining public information for the cell, downlink user-specific information, and scheduling the cell publicly.
  • the same packet includes a cell public message, downlink user-specific information, control information for scheduling cell public information, control information for scheduling downlink user-specific information, and/or control for scheduling uplink user-specific information.
  • the channel of the information is indicated by the narrowband allocation information contained in the broadcast information or transmitted according to different predefined narrowband resources, wherein the cell public messages transmitted on different narrowband resources are different.
  • the difference of the cell public message includes: a cell public message of the same type and a different content, or a cell public message of a different type, wherein the type includes: SIB, RAR, or paging Paging.
  • different narrowband resources can transmit independent channels carrying synchronization information and/or broadcast information.
  • the same packet includes a channel carrying a cell public message, control information for scheduling cell public information, or a channel including control information carrying downlink user-specific information and scheduling user-specific information in the same packet, in the broadcast information.
  • the narrowband allocation information contained in the indication or pre-defined on different narrowband resources is sent.
  • the same packet includes a channel carrying control information for scheduling cell public information and control information for scheduling user-specific information, and transmitting in a narrow band at the center; or, when the broadcast information includes information indicating narrowband allocation of the packet Transmitting on a narrowband resource indicated by the narrowband allocation information or in a predefined narrowband transmission; the same packet includes a channel carrying cell public information and/or downlink user specific information, on a narrowband resource indicated by the control channel scheduling indication send.
  • the same packet includes a channel that carries a cell public message, control information for scheduling cell public information, and control information for scheduling user-specific information, or includes a bearer cell public message, a user-specific message, and a scheduling cell in the same packet.
  • a control information of the public information and a channel for scheduling control information of the user-specific information are transmitted on the center narrowband; or, when the broadcast information includes the packet narrowband allocation information, are transmitted on the narrowband resource indicated by the narrowband allocation information Or in a predefined narrowband transmission; the same packet includes a channel carrying cell public information and user-specific information, or a channel containing only user-specific information in the same packet, or a channel containing only public information of the bearer in the same group. And send on the narrowband resource of the control channel scheduling indication.
  • the channel carrying all downlink information is transmitted on the same narrowband resource.
  • the number of narrowband resources used is one or more.
  • the search space of the channel carrying the control information for scheduling the downlink user-specific information is determined by a predefined or fixed or signaling manner before the RRC connection is established.
  • the signaling is carried in a system information block SIB or a random access response RAR, wherein the signaling bit field only indicates content other than the predefined parameters.
  • the search space of the channel carrying the control information for scheduling downlink user-specific information is not The same as the user, wherein the same search space includes: the user-specific search space and the public search space are completely coincident, or the user-specific search space before the RRC connection is established is the same.
  • the user-specific search space of the user equipment is implicitly allocated to each user equipment UE by using a predetermined parameter.
  • the determining of the user-specific search space includes: determining, by selecting a narrowband resource, selecting a PRBs in the narrowband resource, or determining a PRBs directly in the full bandwidth.
  • the search space of the channel carrying the control information for scheduling the downlink user-specific information is only the user-specific search space and is determined by the same manner before and after the RRC connection is established, where the same manner is predefined or fixed. the way.
  • control information for scheduling the downlink user-specific information or the control information for scheduling the cell-public information is used to indicate the downlink user-specific information or the frequency-domain resources occupied by the cell-specific information
  • one bit is used.
  • the first portion of the domain or bit field indicates narrowband occupancy information
  • the other bitfield or a second portion of one bitfield indicates PRB occupancy information in the narrowband.
  • control information for scheduling the uplink user-specific information includes at least one complete sounding reference signal (SRS) when indicating the frequency domain resource of the narrowband-specific information.
  • SRS sounding reference signal
  • control information for scheduling the user-specific information determines the RA domain according to the number of PRBs corresponding to the maximum system bandwidth, or the control information determines the RA domain according to the number of PRBs corresponding to the current system bandwidth, or the control The information is determined according to the number of PRBs corresponding to the maximum bandwidth received by the user equipment.
  • control information for scheduling the user-specific information or the control information for scheduling the cell-specific information uses one bit when indicating the user-specific information or the time domain subframe resource occupied by the cell public information.
  • the field indicates the number of offsets relative to the subframe in which the control information is located.
  • the narrowband allocation is separately configured for the low-cost MTC terminal and the coverage enhanced MTC terminal, wherein all channels in each packet of the low-cost MTC terminal use different narrowbands than the coverage-enhanced MTC terminal, or A portion of the channels within each packet of the low cost MTC terminal uses a different narrow band than the coverage enhanced MTC terminal.
  • the pilot used to carry the broadcast information, the cell public message, the user-specific information, the control information for scheduling the cell public information, and the channel for scheduling the control information of the user-specific information is: Demodulating the reference signal DMRS, when using the cell-specific pilot CRS in combination, one of the following methods is adopted: the DMRS pilot does not add precoding, the information in the channel using the DMRS pilot does not add precoding; the DMRS pilot uses Pre-defined precoding, using information in the channel of the DMRS pilot using a predefined precoding; The DMRS pilot uses precoding, which is used by the user-specific information in the data channel of the DMRS pilot, wherein the precoding information is indicated by scheduling control information of the user-specific information.
  • mapping relationship exists between the CRS port and the DMRS port, where the mapping relationship is calculated according to at least a port mapping matrix.
  • the used pilot is a DMRS
  • the CRS is used in a time division multiplexing manner, and some subframes only use DMRS pilots, and the remaining subframes only use CRS pilots or both DMRS and CRS pilots.
  • a downlink information receiving method which, when receiving downlink information, receives a channel carrying different downlink information on a narrowband resource.
  • the channel receiving the different downlink information on the narrowband resource includes at least one of: receiving channels in the same packet on the same narrowband resource, and different time domain resources in the same narrowband resource. Receive channels within different packets.
  • the time domain resource includes at least one of the following units: a subframe, a field, and a radio frame.
  • the narrowband resource is a resource in N narrowbands split in a system bandwidth, where N is greater than or equal to 1.
  • each of the narrowband resources is 5PRB, 6PRB, 15PRB or 25PRB.
  • the downlink information includes at least one of the following: synchronization information, broadcast information, cell public information, downlink user-specific information, control information for scheduling cell public information, control information for scheduling downlink user-specific information, and scheduling uplink users. Control information for proprietary information.
  • the receiving, by the packet, the channel carrying the different downlink information on the narrowband resource includes at least one of: receiving the downlink channel carrying the synchronization information and/or the broadcast information on the narrowband of the system bandwidth center at a certain period or a predefined subframe.
  • the signaling configuration includes at least one of the following: broadcast signaling, system message signaling, and physical layer signaling; the predefined manner includes determining public information for the cell, downlink user-specific information, and scheduling the cell publicly. The available narrowband of the control information of the information, the control information for scheduling the downlink user-specific information, and the control information for scheduling the uplink user-specific information.
  • the same group includes a bearer cell public message, downlink user-specific information, control information for scheduling cell public information, control information for scheduling downlink user-specific information, and/or scheduling uplink user-specific information.
  • the channel of the control information is received according to the narrowband allocation information contained in the broadcast information or received on a predefined different narrowband resource, wherein the cell public message received on the different narrowband resources is different.
  • the difference of the cell public message includes: a cell public message with different types of content, or a cell public message of a different type, where the type includes: SIB, RAR, or paging Paging.
  • different narrowband resources can receive independent channels carrying synchronization information and/or broadcast information.
  • the same group includes a channel that carries a cell public message, control information for scheduling cell public information, or a channel that includes control information for carrying downlink user-specific information and scheduling user-specific information in the same group, and according to the broadcast.
  • the narrowband allocation information contained in the information is received on a different narrowband resource indicated or predefined.
  • the same group includes a channel carrying control information for scheduling cell public information and control information for scheduling user-specific information, which is received in a central narrowband, or when the broadcast information includes the group indicating narrowband allocation information.
  • the indication of the narrowband allocation information is received or received in a predefined narrowband; the channel containing the cell public information and/or the downlink user specific information in the same group is accepted on the narrowband resource of the control channel scheduling indication.
  • the same group includes a channel that carries a cell public message, control information for scheduling cell public information, and control information for scheduling user-specific information, or includes a bearer cell public message, a downlink user-specific message, and a scheduling in the same group.
  • the control information of the public information of the cell and the channel for controlling the control information of the user-specific information are received in the center narrowband; or, when the broadcast information includes the set of narrowband allocation information, the indication is received according to the indication of the narrowband allocation information or in a predefined Narrowband reception; the same group contains channels carrying cell public information and downlink user-specific information, or channels containing only downlink user-specific information in the same group, or channels containing only public information of the bearer in the same group. Control channel scheduling is indicated on narrowband resources for reception.
  • the channels carrying all downlink information are all received in the same narrow band.
  • the number of narrowband resources used is one or more.
  • the search space of the channel carrying the control information for scheduling the downlink user-specific information is determined by a predefined or fixed or signaling manner before the RRC connection is established.
  • the signaling is carried in an SIB or RAR, wherein the signaling bit field only indicates content other than the predefined parameters.
  • the search space of the channel carrying the control information for scheduling the downlink user-specific information is the same for different users, wherein the same search space includes: the user-specific search space and the public search space are completely coincident, or The user-specific search space before the RRC connection is established is the same.
  • the user-specific search space of each user equipment is implicitly determined by predetermined parameters.
  • the determining of the user-specific search space includes: determining, by selecting a narrowband resource, selecting a PRBs in the narrowband resource, or determining a PRBs directly in the full bandwidth.
  • the search space of the channel carrying the control information for scheduling the downlink user-specific information is only the user-specific search space and is determined by the same manner before and after the RRC connection is established, where the same manner is predefined or fixed. the way.
  • control information for scheduling the downlink user-specific information or the control information for scheduling the cell-specific information is used to indicate the frequency domain resources occupied by the downlink user-specific information or the cell-public information, and one bit field or bit field is used.
  • the first part indicates narrowband occupancy information
  • the other bit field or a second part of one bit field indicates specific PRB occupancy information in the narrowband.
  • control information for scheduling the uplink user-specific information includes at least one complete SRS when indicating the frequency domain resource of the narrowband-specific information in the uplink user-specific information.
  • control information for scheduling the user-specific information determines the RA domain according to the number of PRBs corresponding to the maximum system bandwidth, or the control information determines the RA domain according to the number of PRBs corresponding to the current system bandwidth, or the control The information is determined according to the number of PRBs corresponding to the maximum bandwidth received by the user equipment.
  • control information for scheduling user-specific information or the control information for scheduling cell-public information is used to indicate time-domain subframe resources occupied by user-specific information or cell-public information
  • a bit field is used to indicate relative to the The number of offsets of the subframe in which the control information is located.
  • the narrowband allocation is separately configured for the low-cost MTC terminal and the coverage enhanced MTC terminal, wherein all channels in each packet of the low-cost MTC terminal use different narrowbands than the coverage-enhanced MTC terminal, or A portion of the channels within each packet of the low cost MTC terminal uses a different narrow band than the coverage enhanced MTC terminal.
  • the pilot used in the channel carrying the broadcast information, the cell public message, the user-specific information, the control information for scheduling the public information of the cell, and the control information for scheduling the user-specific information is a DMRS, and is used when the CRS is used in combination.
  • the DMRS pilot does not add precoding, and the information in the channel using the pilot does not add precoding
  • the DMRS pilot uses predefined precoding, and the information in the channel using the pilot is also used.
  • Pre-defined precoding is used
  • DMRS pilots use precoding, while user-specific information in the data channel using the pilot also uses precoding, while precoding information is indicated by scheduling control information for user-specific information.
  • mapping relationship exists between the CRS port and the DMRS port, where the mapping is It is calculated based on at least the port mapping matrix.
  • the used pilot is a DMRS
  • the CRS is used in a time division multiplexing manner, and some subframes only use DMRS pilots, and the remaining subframes only use CRS pilots or both DMRS and CRS pilots.
  • a downlink information sending apparatus including: a grouping module, configured to group channels carrying different downlink information; and a transmitting module, configured to allocate the grouped channel to a narrowband resource Send on.
  • the transmission module includes at least one of: a first transmission unit configured to allocate channels in the same packet to transmit on the same narrowband resource; and a second transmission unit configured to allocate channels in different packets to Sent on different time domain resources in the same narrowband resource.
  • the transmission module includes: a third transmission unit configured to transmit a channel carrying synchronization information and/or broadcast information on a narrow band of a system bandwidth center; determining a transmission unit, configured to use signaling configuration or a predefined manner
  • the determined narrowband resource sends at least one of the following: bearer cell public information, downlink user proprietary information, control information for scheduling cell public information, channel for scheduling control information of downlink user proprietary information, and control of scheduling uplink user proprietary information The channel of information.
  • a downlink information receiving apparatus including: a receiving module, configured to receive, on a narrowband resource, a channel carrying different downlink information on a narrowband resource when receiving downlink information.
  • the channel carrying the different downlink information is grouped, and the channel after the packet is allocated to the narrowband resource for transmission, which solves the problem that the downlink information cannot be received in the bandwidth limited scenario in the technology, and the downlink is ensured. Correct reception of information.
  • FIG. 1 is a schematic diagram of each channel resource in an LTE/LTE-A system according to the related art
  • FIG. 2 is a flowchart of a method for transmitting downlink information according to an embodiment of the present invention
  • FIG. 3 is a block diagram of a downlink information transmitting apparatus according to an embodiment of the present invention.
  • FIG. 4 is a block diagram 1 of a downlink information transmitting apparatus according to a preferred embodiment of the present invention.
  • FIG. 5 is a second block diagram of a downlink information transmitting apparatus according to a preferred embodiment of the present invention.
  • FIG. 6 is a schematic diagram 1 of grouping downlink transmission information into different narrowband transmissions according to a preferred embodiment of the present invention
  • FIG. 7 is a second schematic diagram of grouping downlink transmission information in different narrowband transmissions according to a preferred embodiment of the present invention.
  • FIG. 8 is a third schematic diagram of grouping downlink transmission information into different narrowband transmissions according to a preferred embodiment of the present invention.
  • FIG. 9 is a schematic diagram 4 of grouping downlink transmission information into different narrowband transmissions according to a preferred embodiment of the present invention.
  • FIG. 10 is a schematic diagram 5 of grouping downlink transmission information into different narrowband transmissions in accordance with a preferred embodiment of the present invention.
  • FIG. 2 is a flowchart of a downlink information sending method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:
  • Step S202 grouping channels carrying different downlink information
  • Step S204 the grouped channel is allocated and transmitted on the narrowband resource.
  • the channel carrying the different downlink information is grouped, the channel is allocated to the narrowband resource in the bandwidth-constrained scenario, and the downlink information cannot be received in the bandwidth-limited scenario.
  • the problem ensures the correct reception of the downlink information.
  • the grouping the channel after the channel is allocated to the narrowband resource may include at least one of the following:
  • the channels are allocated to transmit on the same narrowband resource, and the channels in different packets are allocated to different time domain resources in the same narrowband resource for transmission.
  • the time domain resource includes at least one of the following units: a subframe, a field, and a radio frame.
  • the narrowband resource is a resource in N narrowbands split in the system bandwidth, where N is greater than or equal to 1.
  • Each of the narrowband resources is: 5 physical resource blocks PRB, 6PRB, 15PRB or 25PRB.
  • the foregoing downlink information includes at least one of the following: synchronization information, broadcast information, cell public information, downlink user-specific information, control information for scheduling cell public information, control information for scheduling downlink user-specific information, and scheduling uplink user-specific information. Control information.
  • transmitting the grouped channel to the narrowband resource may include at least one of: a channel carrying synchronization information and/or broadcast information is sent on a narrowband of a system bandwidth center;
  • the signaling configuration or the narrowband resource determined by the predefined manner sends at least one of the following: bearer cell public information, downlink user proprietary information, control information for scheduling cell public information, channel for scheduling control information of downlink user proprietary information, scheduling The channel of the control information of the uplink user-specific information.
  • the foregoing signaling configuration may be performed in multiple manners.
  • the signaling configuration may include at least one of the following: broadcast signaling, system message signaling, and physical layer signaling; the predefined manner includes determining The transmission of one or more kinds of information used for cell public information, downlink user-specific information, control information for scheduling cell public information, control information for scheduling downlink user-specific information, and control information for scheduling uplink user-specific information A narrow band is available.
  • the narrowband allocation information included in the broadcast information is indicated or transmitted according to different predefined narrowband resources, wherein the cell public messages sent on different narrowband resources are different.
  • the difference of the public information of the cell includes: a public message of a cell of the same type and a different content, or a public message of a cell of a different type, where the type includes: SIB, RAR, or paging Paging.
  • Different narrowband resources can transmit independent channels carrying synchronization information and/or broadcast information.
  • the same packet includes a channel carrying a cell public message, control information for scheduling cell public information, or a channel including control information carrying downlink user-specific information and scheduling user-specific information in the same packet, and narrowband allocation included in the broadcast information.
  • Information is sent or sent on different predefined narrowband resources.
  • the same packet includes a channel carrying control information for scheduling cell public information and control information for scheduling user-specific information, and transmitting in a narrow band at the center; or, when the broadcast information includes information indicating narrowband allocation of the packet, the narrowband allocation is performed in the narrowband
  • the narrowband resource indicated by the information is sent or transmitted in a predefined narrowband; the same packet includes a channel carrying the cell public information and/or the downlink user specific information, and is sent on the narrowband resource indicated by the control channel scheduling, which needs to be explained It can also be sent directly on narrowband resources without scheduling by the control channel.
  • the same packet includes a channel for carrying a cell public message, control information for scheduling cell public information, and control information for scheduling user-specific information, or control information for carrying a cell public message, a user-specific message, and scheduling cell public information in the same packet.
  • the channel carrying the public information of the cell is sent on the narrowband resource of the control channel scheduling indication.
  • the transmission is performed on the same narrowband resource, that is, the channel carrying all the downlink information is transmitted on the same narrowband resource.
  • the search space carrying the channel for scheduling the control information of the downlink user-specific information is determined by a predefined or fixed or signaling manner before the RRC connection is established.
  • the signaling is carried in a system information block SIB or a random access response RAR, wherein the signaling bit field only indicates content other than the predefined parameters.
  • the search space of the channel carrying the control information of the downlink user-specific information is the same for different users, wherein the same search space includes: the user-specific search space and the public search space are completely coincident, or before the RRC connection is established. User-specific search spaces are the same.
  • the user-specific search space of the user equipment is implicitly allocated to each user equipment UE by a predetermined parameter.
  • the determination of the user-specific search space may be performed in a plurality of manners.
  • the determining of the user-specific search space may include: determining, by selecting a narrowband resource, and then selecting a PRBs in the narrowband resource. Or, the way to select PRBs directly in the full bandwidth is determined.
  • the search space of the channel carrying the control information for scheduling the downlink user-specific information is only the user-specific search space and is determined by the same manner before and after the RRC connection is established, where the same manner is a predefined or fixed manner.
  • the control information for scheduling the downlink user-specific information or the control information for scheduling the public information of the cell uses a bit field or a first part of the bit field when indicating the downlink user-specific information or the frequency domain resource occupied by the cell public information.
  • the narrowband occupancy information is indicated, and the other bit field or the second portion of one bit field indicates the PRB occupancy information in the narrowband.
  • the control information for scheduling the uplink user-specific information includes at least one complete SRS when indicating the narrow-band frequency domain resource of the uplink user-specific information, wherein the control information of the scheduled user-specific information is regardless of the system bandwidth.
  • the RA domain is determined according to the number of PRBs corresponding to the maximum system bandwidth, or the control information is determined according to the number of PRBs corresponding to the current system bandwidth, or the control information is determined according to the number of PRBs corresponding to the maximum bandwidth received by the user equipment. Determine the RA domain.
  • the control information for scheduling the user-specific information or the control information for scheduling the public information of the cell when indicating the user-specific information or the time domain subframe resource occupied by the public information of the cell, uses a bit field to indicate relative to the control information. The number of offsets in the subframe.
  • the narrowband allocation is separately configured for the low-cost MTC terminal and the coverage enhanced MTC terminal, wherein all channels in each packet of the low-cost MTC terminal use different narrowbands than the coverage-enhanced MTC terminal, or the low-cost MTC terminal is in each packet
  • the partial channel uses a different narrow band than the coverage enhanced MTC terminal.
  • the pilot used to carry the broadcast information, the public information of the cell, the user-specific information, the control information for scheduling the public information of the cell, and the control information for scheduling the user-specific information is a demodulation reference signal DMRS, in a joint
  • the cell-specific pilot CRS is used in one of the following ways: DMRS pilot does not add precoding, information in the channel using the DMRS pilot does not add precoding; DMRS pilot uses predefined precoding, use The information in the channel of the DMRS pilot uses a predefined precoding; the DMRS pilot uses precoding, and the precoding is used by the user specific information in the data channel of the DMRS pilot, wherein the precoding information is passed The control information for scheduling the user-specific information is instructed.
  • mapping relationship between the CRS port and the DMRS port, where the mapping relationship is calculated according to at least the port mapping matrix.
  • the pilot used is DMRS
  • the CRS is used in combination with the time division multiplexing mode, and some subframes only use DMRS pilots, and the remaining subframes only use CRS pilots or both DMRS and CRS pilots.
  • the embodiment of the present invention further provides a method for receiving downlink information, including: when receiving downlink information, a packet is received on a narrowband resource to receive a channel carrying different downlink information.
  • the receiving of the channel carrying the different downlink information on the narrowband resource may be performed in a plurality of manners.
  • the receiving, by the packet, the channel carrying the different downlink information on the narrowband resource may include at least one of the following: Channels within the same packet are received on the same narrowband resource, and channels within different packets are received on different time domain resources in the same narrowband resource.
  • the time domain resource includes at least one of the following units: a subframe, a field, and a radio frame.
  • the narrowband resource is a resource in N narrowbands split in the system bandwidth, where N is greater than or equal to 1. Each of the narrowband resources is 5PRB, 6PRB, 15PRB or 25PRB.
  • the foregoing downlink information includes at least one of the following: synchronization information, broadcast information, cell public information, downlink user-specific information, control information for scheduling cell public information, control information for scheduling downlink user-specific information, and scheduling uplink user-specific information. Control information.
  • the group receiving the channel carrying the different downlink information on the narrowband resource includes at least one of: receiving the bearer synchronization information and the bearer at least in a narrow period of the system bandwidth center in a certain period or a predefined subframe. / or downlink channel of broadcast information; in the channel carrying the public information of the cell, the downlink user-specific information, the control information for scheduling the public information of the cell, the control information for scheduling the downlink user-specific information, and the control information for scheduling the uplink user-specific information
  • the narrow band used by at least one of is determined by signaling configuration or a predefined manner.
  • the foregoing signaling configuration may include at least one of the following: broadcast signaling, system message signaling, and physical layer signaling; the predefined manner includes determining control for cell public information, downlink user specific information, and scheduling cell public information. The available narrowband of information, the control information for scheduling the downlink user-specific information, and the reception of one or more of the control information for scheduling the uplink user-specific information.
  • the same group includes a channel that carries the cell public message, the downlink user-specific information, the control information for scheduling the cell public information, the control information for scheduling the downlink user-specific information, and/or the control information for scheduling the uplink user-specific information, according to the broadcast information.
  • the narrowband allocation information contained in the packet is indicated or received on a predefined different narrowband resource, wherein the cell public message received on the different narrowband resources is different.
  • the difference of the public message of the cell includes: a public message of a cell with different types of content, or a public message of a cell of a different type, where the type Including: SIB, RAR or paging Paging.
  • Different narrowband resources can receive independent channels carrying synchronization information and/or broadcast information.
  • a channel containing control information for carrying a cell public message and scheduling cell public information or a channel containing control information for carrying downlink user-specific information and scheduling user-specific information in the same group, and according to the narrowband included in the broadcast information Received on different narrowband resources indicated or pre-defined by the allocation information.
  • the channel in the same group that includes the control information for scheduling the public information of the cell and the control information for scheduling the user-specific information is received in the center narrowband, or when the broadcast information includes the indication of the narrowband allocation information, according to the indication of the narrowband allocation information.
  • Receiving or receiving in a predefined narrowband; a channel containing cell public information and/or downlink user-specific information in the same group is accepted on the narrowband resource of the control channel scheduling indication.
  • the same group includes a channel for carrying a cell public message, control information for scheduling cell public information, and control information for scheduling user-specific information, or control for carrying a cell-public message, a downlink user-specific message, and scheduling cell public information in the same group.
  • the information and the channel for scheduling the control information of the user-specific information are received in the center narrowband; or, when the broadcast information includes the set of narrowband allocation information, the indication is received according to the narrowband allocation information or in a predefined narrowband reception; within the same group A channel including the public information of the cell and the downlink user-specific information, or a channel that carries the downlink user-specific information in the same group, or a channel that only contains the public information of the bearer in the same group, and the narrowband indicated by the control channel scheduling Received on the resource.
  • the reception is performed in the same narrowband, that is, the channels carrying all the downlink information are all received in the same narrowband.
  • the number of narrowband resources used is one or more.
  • the search space of the channel carrying the control information for scheduling the downlink user-specific information is determined by a predefined or fixed or signaling manner before the RRC connection is established.
  • the signaling is carried in the SIB or RAR, wherein the signaling bit field only indicates content other than the predefined parameters.
  • the search space of the channel carrying the control information for scheduling the downlink user-specific information is the same for different users, wherein the same search space includes: the user-specific search space and the public search space are completely coincident, or the user before the RRC connection is established.
  • the proprietary search space is the same.
  • the user-specific search space of each user equipment is implicitly determined by predetermined parameters.
  • the determining of the user-specific search space includes: determining the PRBs in the narrowband resource by first selecting the narrowband resource, or determining the PRBs directly in the full bandwidth.
  • the search space of the channel carrying the control information of the downlink user-specific information is only the user-specific search space and is determined by the same manner before and after the RRC connection is established, where the same manner is a predefined or fixed manner.
  • the control information for scheduling the downlink user-specific information or the control information for scheduling the public information of the cell uses one of the bit fields or the bit field when indicating the frequency domain resources occupied by the downlink user-specific information or the cell-public information. One part indicates narrowband occupancy information, and the other bit field or a second part of one bit field indicates specific PRB occupancy information in the narrowband.
  • the control information for scheduling the uplink user-specific information includes at least one complete SRS when indicating the frequency domain resource of the narrowband-specific information in the uplink user-specific information, where the control information of the scheduled user-specific information is corresponding to the maximum system bandwidth. The number of PRBs is used to determine the RA domain.
  • control information determines the RA domain according to the number of PRBs corresponding to the current system bandwidth, or the control information determines the RA domain according to the number of PRBs corresponding to the maximum bandwidth received by the user equipment.
  • the control information for scheduling the user-specific information or the control information for scheduling the public information of the cell when indicating the time-domain subframe resource occupied by the user-specific information or the cell-public information, uses a bit field indicating the child relative to the control information. The offset of the frame.
  • the narrowband allocation is separately configured for the low-cost MTC terminal and the coverage enhanced MTC terminal, wherein all channels in each packet of the low-cost MTC terminal use different narrowbands than the coverage-enhanced MTC terminal, or the low-cost MTC terminal is in each packet
  • the partial channel uses a different narrow band than the coverage enhanced MTC terminal.
  • the pilot used in the channel carrying the broadcast information, the cell public message, the user-specific information, the control information for scheduling the public information of the cell, and the control information for scheduling the user-specific information is DMRS, and one of the following methods is used in conjunction with the CRS. : DMRS pilot does not add precoding, and the information in the channel using the pilot does not add precoding; DMRS pilot uses pre-defined precoding, and the information in the channel using the pilot also uses predefined Precoding; DMRS pilots use precoding, while user-specific information in the data channel using the pilot also uses precoding, while precoding information is indicated by scheduling control information for user-specific information. A mapping relationship exists between the CRS port and the DMRS port, where the mapping relationship is calculated according to at least the port mapping matrix. When the pilot used is DMRS, the CRS is used in combination with the time division multiplexing mode, and some subframes only use DMRS pilots, and the remaining subframes only use CRS pilots or both DMRS and CRS pilots.
  • the embodiment of the present invention further provides a transmission processing device, which is used to implement the foregoing embodiments and preferred embodiments, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 3 is a block diagram of a downlink information transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 3, the method includes a packet module 32 and a transmission module 34. The following briefly describes each module.
  • the grouping module 32 is configured to group channels carrying different downlink information
  • the transmission module 34 is configured to allocate the grouped channel to the narrowband resource for transmission.
  • the transmission module 34 includes at least one of the following:
  • the first transmission unit 42 is configured to allocate channels in the same packet to the same narrowband resource for transmission;
  • the second transmission unit 44 is configured to allocate channels in different packets to different times in the same narrowband resource Sent on the domain resource.
  • FIG. 5 is a block diagram 2 of a downlink information transmitting apparatus according to a preferred embodiment of the present invention.
  • the transmitting module 34 includes:
  • a third transmission unit 52 configured to transmit a channel carrying synchronization information and/or broadcast information on a narrow band of a system bandwidth center;
  • the determining transmission unit 54 is configured to send at least one of the following: the bearer cell public information, the downlink user specific information, the control information for scheduling the cell public information, and the scheduling downlink user specialization on the narrowband resource determined by the signaling configuration or the predefined manner.
  • the embodiment of the invention further provides a downlink information receiving apparatus, comprising: a receiving module, configured to receive, on a narrowband resource, a channel carrying different downlink information on a narrowband resource when receiving downlink information.
  • the present embodiment provides a method for narrow-band system to transmit different channel packets, which mainly solves the problem of resource usage when different signals are downlinked in a narrowband system. Ensure the need for normal communication of terminal devices operating in narrowband systems.
  • the base station When transmitting downlink information, the base station will carry channel packets with different downlink information, and allocate channels in the same packet to the same narrowband resource for transmission, or allocate channels in different packets to different time domain resources in the same narrowband resource. Transfer on.
  • the downlink information includes at least one of the following information: synchronization information, broadcast information, cell public information, user-specific information, control information for scheduling cell public information, and control information for scheduling user-specific information.
  • the narrowband resource is a resource in N narrowbands that are divided in the system bandwidth, and the resources in each narrowband are preferably 6 PRB, 15 PRB, and 25 PRB.
  • the time domain resource includes at least the following units: a subframe, a field, and a radio frame.
  • Allocating channels in the same packet to transmit on the same narrowband resource, or allocating channels in different packets to different time domain resources in the same narrowband resource further includes: the terminal is at least in the system bandwidth center narrowband with a certain period or A downlink channel that carries synchronization and/or broadcast information on a predefined subframe, a narrowband used to carry cell public information, user-specific information, control information for scheduling cell public information, and channel for scheduling control information of user-specific information Determined by signaling configuration or by predefined means.
  • Transmission is performed on narrowband resources in several ways, as further explained below.
  • the same group includes a channel carrying a cell public message, user-specific information, control information for scheduling cell public information, and control information for scheduling user-specific information, and is indicated according to the narrowband allocation information. Transmitted on different narrowband resources, where the cell public messages sent on different narrowband resources are different.
  • the same group includes a channel that carries a cell public message, control information for scheduling cell public information, or a channel that includes control information for carrying user-specific information and scheduling user-specific information in the same group. And transmitting on different narrowband resources indicated by the narrowband allocation information.
  • the channel containing the control information for scheduling the public information of the cell and the control information for scheduling the user-specific information in the same group is transmitted according to the indication of the narrowband allocation information when the central narrowband transmission or the broadcast information includes the indication of the narrowband allocation information.
  • the same group contains channels carrying cell public information and user-specific information, and the narrowband resources used by the same group are indicated by the control channel scheduling.
  • the same group includes a channel for carrying a cell public message, control information for scheduling cell public information, and control information for scheduling user-specific information, or control information for carrying a cell public message, a user-specific message, and scheduling cell public information in the same group. And a channel for scheduling control information of the user-specific information, which is transmitted according to the indication of the narrowband allocation information when the center narrowband transmission or the broadcast information includes the group of narrowband allocation information.
  • the same group includes channels that carry cell public information and user-specific information, or channels that carry user-specific information in the same group, or channels that only carry public information of the cell in the same group, and narrowband resources used by the same group. The indication is scheduled by the control channel.
  • the channels carrying all the downlink information are all transmitted in the same narrow band.
  • the search space of the channel carrying the control information for scheduling the user-specific information is determined by a predefined or fixed or signaling manner before the RRC connection is established, and the signaling is carried in the SIB or the RAR.
  • the search space of the channel that determines the control information for scheduling the user-specific information by a predefined or fixed manner includes both the UE-specific search space and the public search space and the regions are completely coincident.
  • the base station obtains each UE-specific search space by implicitly mapping each UE by using some parameters such as a UE ID.
  • the search space carrying the control information for scheduling the user-specific information is only the user-specific search space and is determined in a predefined or fixed manner before and after the RRC connection is established.
  • the control information for scheduling the user-specific information or the control information for scheduling the public information of the cell indicates the narrow-band occupation information by using one of the bit fields or the first part of the bit field when indicating the frequency domain resources occupied by the user-specific information or the cell-specific information.
  • Another bit field or a second portion of a bit field indicates specific PRB occupancy information in the narrow band.
  • the control information for scheduling user-specific information or the control information for scheduling cell-public information is used to indicate a time domain subframe resource occupied by user-specific information or cell-public information, and a bit field is used to indicate a subframe relative to the control information.
  • the offset number is used to indicate a time domain subframe resource occupied by user-specific information or cell-public information.
  • Narrowband allocation can be configured separately for low cost MTC terminals and coverage enhanced MTC terminals.
  • the pilot used to carry the cell public message, the user-specific information, the control information for scheduling the public information of the cell, and the control information for scheduling the user-specific information is DMRS, and one of the following modes is used when jointly using the CRS: DMRS pilot No precoding is added, and the information in the channel using the pilot is not added with precoding; the DMRS pilot uses pre-defined open-loop MIMO precoding, and the information in the channel using the pilot also uses a predefined opening. Ring MIMO precoding; DMRS pilots use closed-loop MIMO precoding, while user-specific information in the data channel using the pilot also uses closed-loop MIMO precoding, while precoding information is indicated by scheduling control information of user-specific information .
  • the downlink resource usage problem of the partial narrowband MTC terminal working in the system bandwidth can be solved, thereby ensuring that the base station serves as many terminal services as possible and transmits data normally, and can also solve the initial user-specific search space blur. Problems and the combined use of different pilots to improve transmission performance.
  • the base station When transmitting downlink information, the base station will carry channel packets with different downlink information, and allocate channels in the same packet to the same narrowband resource for transmission, or allocate channels in different packets to different time domain resources in the same narrowband resource. Transfer on.
  • the downlink information includes at least one of the following information: synchronization information, broadcast information, cell public information, user-specific information, control information for scheduling public information of the cell, and control information for scheduling user-specific information.
  • the narrowband resource is a resource in N narrowbands that are divided in the system bandwidth, and the resources in each narrowband are preferably 5PRB, 6PRB, 15PRB, and 25PRB.
  • the fixed narrowband resource is divided, for example, 5PRB, 6PRB, 15PRB, and 25PRB, and the system bandwidth edge is less than the foregoing number of PRB resources may be merged with the secondary edge narrowband or become smaller than the above.
  • the time domain resource includes at least the following units: a subframe, a field, and a radio frame.
  • the transmission further includes the terminal at least in the system bandwidth center narrowband with a certain period or pre-
  • the downlink channel that receives the synchronization and/or broadcast information is received on the defined subframe, and the narrowband used by the channel carrying the cell public information, the user-specific information, the control information for scheduling the public information of the cell, and the control information for scheduling the user-specific information is adopted. Signaling configuration or predefined way to determine.
  • the terminal receives the downlink channel carrying the synchronization and/or broadcast information at least in a narrow period of the system bandwidth center in a certain period or a predefined subframe, for example, receiving the synchronization on the narrowband of the center frame 0, 5 in the radio frame at a periodic interval of 400 ms.
  • the broadcast channel may receive other information at the same narrowband position in the next 400 ms period; or pre-defined to receive the synchronization and broadcast channels on the center narrowband of subframes 0, 5 in the odd radio frame, and may receive other in the same narrowband position in the even radio frame information.
  • the narrowband used by the channel carrying the public information of the cell, the user-specific information, the control information for scheduling the public information of the cell, and the control information for scheduling the user-specific information is determined by signaling configuration or a predefined manner, wherein the signaling configuration includes broadcast signaling System message signaling, physical layer signaling; a predefined manner includes determining that certain available narrowband is used for transmission of one or more of the information.
  • FIG. 6 is a schematic diagram of grouping downlink transmission information into different narrowband transmissions according to a preferred embodiment of the present invention. 1. As shown in FIG. 6, when the broadcast information includes narrowband allocation information, the same group includes a channel that carries a cell public message, user-specific information, control information for scheduling cell public information, and control information for scheduling user-specific information. And transmitting according to different narrowband resources indicated by the narrowband allocation information, where cell public messages sent on different narrowband resources are different.
  • the broadcast information is MTC-specific broadcast information, wherein the indicated information includes at least SFN and narrowband allocation information, and the narrowband allocation information bit field indicates that different service types of MTC terminals use different narrowbands or predefined narrowbands 1, 2, 3, 4, 5, 6 MTC terminals for different service types (smart meter reading, monitoring, medical, intelligent transportation, emergency communication, smart home) use different narrowbands, such as different system messages; or different types of MTC terminals indicating the same service type Cell public messages use different narrowbands, such as system messages and RAR messages.
  • the SS/MIB and the narrowband allocation information need to be received first.
  • the UE obtains new narrowband allocation information by demodulating the subframe 0 center narrowband.
  • the narrowband allocation information may indicate some available narrowbands, and the terminals of different service types convert the narrowband available to themselves, and receive the SIB and the proprietary message on the narrowband.
  • FIG. 7 is a schematic diagram 2 of grouping downlink transmission information into different narrowband transmissions according to a preferred embodiment of the present invention.
  • the same group includes the bearer cell public message and the scheduling cell publicly.
  • the user-specific information and the corresponding control are located in other narrowbands.
  • the central narrowband (preferred) or predefined narrowband 2 receives the control information for scheduling the public information of the cell and the corresponding public message (this subframe scheduling or cross-subframe scheduling), of course. If the resource is not enough (the center narrowband cannot carry control and data at the same time), the control information of the cell public information may be scheduled.
  • the cell public information may be located in other narrowband (cross-subframe scheduling) or the narrowband position of the undefined cell public information in the uncontrolled transmission mode. .
  • the SS/MIB and/or narrowband allocation information is first received, and the narrowband allocation information may be indicated by the added information in the MIB or the subsequent SIB indication.
  • the UE When there is a narrowband position change requirement, the UE obtains new narrowband allocation information by demodulating the system message in the subframe zero narrowband or other subframe center narrowband. For the receiving of the cell public message in the mode, the narrowband allocation information can be flexibly adjusted to other narrowbands to avoid the situation that the center narrowband is unavailable or the resources are insufficient.
  • the number of the narrowband is equal to 1 or greater than 1.
  • FIG. 8 is a schematic diagram 3 of grouping downlink transmission information into different narrowband transmissions according to a preferred embodiment of the present invention.
  • the same group includes control information for carrying public information of scheduling cells and control information for scheduling user-specific information.
  • the channel is transmitted according to the indication of the narrowband allocation information when the central narrowband transmission or the broadcast information includes the indication of the narrowband allocation information.
  • the same group contains channels carrying cell public information and user-specific information, and the narrowband resources used by the same group are indicated by the control channel scheduling.
  • the control information for receiving the public information of the scheduling cell and/or the control information for scheduling the user-specific information are all in the center narrowband (if there is no control information for scheduling the public information of the cell, the uncontrolled transmission operation is used for the cell public letter)
  • the information is transmitted in a predefined narrowband position) or the other one or more narrowbands of the broadcast information indication or pre-defined, and the scheduled data is located in other narrowbands.
  • the cross-subframe scheduling must be combined, and the time-domain subframe interval is scheduled across the subframes. It can be 1, 2 or other optional values, and it is no longer necessary to receive the narrowband allocation information first. For this method, consider more flexible narrowband use.
  • control/service allocation indication can be added to the MIB to flexibly adjust the control information for scheduling the public information of the cell and/or the control information for scheduling the user-specific information.
  • Available narrowband or predefined allocation control/service available narrowbands the number of narrowbands being equal to 1 or greater than one.
  • FIG. 9 is a schematic diagram 4 of grouping downlink transmission information into different narrowband transmissions according to a preferred embodiment of the present invention.
  • the same group includes control information for carrying a cell public message, scheduling cell public information, and scheduling user-specific. a channel for controlling information of information, or a channel containing control information for carrying a cell public message, a user-specific message, scheduling cell public information, and scheduling user-specific information in the same group, transmitting in a narrowband at the center or including the broadcast information
  • the set of narrowband allocation information is transmitted in accordance with the indication of the narrowband allocation information.
  • the same group includes channels that carry cell public information and user-specific information, or channels that carry user-specific information in the same group, or channels that only carry public information of the cell in the same group, and narrowband resources used by the same group.
  • the indication is scheduled by the control channel.
  • the control information for receiving the public information of the scheduling cell and/or the control information for scheduling the user-specific information are all in the center narrowband (if the control information of the cell public information is not scheduled, the uncontrolled transmission operation is used, and the cell public information is transmitted in the predefined narrowband position) When there are still resources remaining, part of the cell public information and/or user-specific information is carried at the same time.
  • the scheduled data is located in other narrowbands.
  • the cross-subframe scheduling must be combined.
  • the inter-subframe scheduling time zone sub-frame interval can be 1, 2 or other optional values. In this case, the narrowband allocation information is no longer needed to be received first. For this method, consider more flexible narrowband use.
  • control/service allocation indication can be added to the MIB to flexibly adjust the control information for scheduling the public information of the cell and/or the control information for scheduling the user-specific information.
  • Available narrowband or predefined allocation control/service available narrowbands the number of narrowbands being equal to 1 or greater than one.
  • FIG. 10 is a schematic diagram 5 of packetizing downlink transmission information in different narrowband transmissions according to a preferred embodiment of the present invention. As shown in FIG. 10, channels carrying all downlink information are all transmitted in the same narrowband.
  • narrowband allocation information is not required.
  • the control information and the data information are multiplexed in a narrow band.
  • the search space of the channel carrying the control information for scheduling the user-specific information is determined by a predefined or fixed or signaling manner before the RRC connection is established, and the signaling is carried in the SIB or the RAR.
  • the USS determines that the parameters of the USS are not available before the establishment of the RRC connection.
  • the parameters of the USS are determined by the predefined or fixed or signaling methods.
  • the signaling is carried in the SIB or RAR and may include the USS.
  • the search space of the channel carrying the control information for scheduling user-specific information is the same for different users. Said The same search space includes that the user-specific search space and the public search space are completely coincident or the user-specific search space before the RRC connection is established is the same.
  • the cell public message uses the corresponding control information to perform the scheduling indication
  • the CSS and the USS can be regarded as the same search space, wherein the aggregation level and the number of candidate sets selected by the CSS are less than the aggregation selected by the USS.
  • the number of the candidate and the number of candidate sets, and the start position of the candidate set corresponding to the same aggregation level are the same; when there is no CSS, the cell public message uses the control-less transmission mode, and the USS before the establishment of the RRC connection is used for each UE. The same is true, equivalent to CSS configuration but there is no CSS at this time.
  • the base station implicitly allocates each UE to obtain individual UE search spaces by using some parameters such as a UE ID. Further, the terminal determines, according to some parameters, such as the UE ID, which part of the USS determined before the establishment of the RRC connection is its own USS. For example, the candidate set starting position corresponding to each aggregation level in the USS may be calculated by the UE ID.
  • the search space of the channel carrying the control information for scheduling the user-specific information is only the user-specific search space and is determined by the same manner before and after the RRC connection is established, and the same manner is a predefined or fixed manner.
  • the USS related parameters do not use signaling, and the predefined location and transmission mode are adopted.
  • the initial USS configuration is the same as the USS configuration after the RRC connection is established, and the pre-defined location is pre-defined.
  • the defined way receives the EPDCCH. For example, 1 or 2 PRBs are used as control channel regions in each narrowband, and the remaining PRB user data channel regions are arranged; or the control channels are arranged only in the narrowband center, and the traffic channels are all placed in other narrowband transmissions, combined with cross-subframe scheduling.
  • the first portion of the bit field or the bit field is used to indicate the narrow-band occupancy information.
  • Another bit field or a second portion of a bit field indicates specific PRB occupancy information in the narrow band.
  • the first bit indicates a high frequency offset or a low frequency offset
  • the next x bits represent the number of offsets, x is less than or equal to 3
  • the other bit field or the second portion of a bit field indicates a narrow band
  • the specific PRB occupancy information when the control information for scheduling the user-specific information or the control information for scheduling the public information of the cell indicates the time-domain subframe resource occupied by the user-specific information or the cell-public information, a bit field is used to indicate the control information. The number of offsets in the subframe.
  • the cross-subframe scheduling when the control information scheduling indicates the corresponding data information, one bit field is used to indicate the offset number of the subframe in which the control information is located, and the preferred offset values are 1, 2, and 3. , 4.
  • Narrowband allocation can be configured separately for low cost MTC terminals and coverage enhanced MTC terminals. Wherein all channels in each packet of the low-cost MTC terminal use different narrowbands than the coverage-enhanced MTC terminal, or part of the channels in the low-cost MTC terminal use different narrowbands than the coverage-enhanced MTC terminal. Further, since the coverage enhanced MTC terminal usually needs to repeatedly transmit each channel when using the narrowband, the coverage enhanced MTC terminal and the low-cost MTC terminal are separately configured in different narrowbands to better facilitate the respective needs of the terminal. Small mutual interference, ensuring the use of resources for normal communication of low-cost MTC terminals.
  • the channels in each packet of the low-cost MTC terminal use different narrowbands than the coverage-enhanced MTC terminal, that is, the channels included in the various packet modes ensure that the coverage enhanced MTC terminal uses a separate narrowband.
  • Priority is given to narrowband requirements for low-cost MTC terminals; mode 2 is that low-cost MTC terminals use different narrowbands for part of the channels and coverage-enhanced MTC terminals, for example, low-cost MTC terminals and coverage-enhanced MTC terminals use the same narrow-band transmission.
  • the cell has public information, and the low-cost MTC terminal and the coverage-enhanced MTC terminal use different Tida transmission user-specific information.
  • the pilot used by the cell carrying the cell public message, the user-specific information, the control information for scheduling the public information of the cell, and the control information for scheduling the user-specific information is DMRS, and one of the following modes is adopted when the CRS is used in combination: DMRS
  • the frequency does not add precoding, and the information in the channel using the pilot does not add precoding; further, the pilot estimation when the terminal jointly uses the CRS can be directly combined with the pilot estimation result of the DMRS, and does not need to be added.
  • the DMRS pilot uses a predefined precoding, and the information in the channel using the pilot also uses the predefined precoding; further, when the terminal jointly uses the CRS, it is first necessary to add a pre-added CRS pilot value.
  • precoding is equivalent to known and then combined with the channel estimation results of the DMRS.
  • the DMRS pilot uses precoding, and user-specific information in the data channel using the pilot also uses precoding, while the precoding information is indicated by scheduling control information of the user-specific information.
  • the terminal when the terminal jointly uses the CRS, the terminal first needs to add a predefined closed-loop MIMO precoding to the received CRS pilot value. At this time, the precoding is learned by the control information, and then merged with the channel estimation result of the DMRS. .
  • mapping relationship exists between the CRS port and the DMRS port, where the mapping relationship is calculated according to at least a port mapping matrix.
  • the downlink information transmission is further elaborated below by way of a specific embodiment.
  • the base station When transmitting the downlink information, the base station sends synchronization information and broadcast information in a central narrowband position of the system bandwidth of the radio frame N subframe 0, wherein the center narrowband is 6 PRB, and the broadcast information includes system frame number information and narrowband allocation information, and the radio frame N subframe 5 system bandwidth center narrowband position to send synchronization information.
  • the narrowband allocation information indicates that there are 7 narrowbands available in the system bandwidth, respectively located in the center narrowband with a positive offset of 1-3 narrowbands and a negative offset of 1-3 narrowbands, from low frequency to high frequency numbered narrowband 1-7.
  • the base station sends control information for scheduling the public information of the cell and the public information of the cell in the available narrowband of the N subframe 1 of the radio frame.
  • the common search space of the cell where the control channel carrying the public information of the cell is located in the two PRBs of the narrowband center is used for aggregation.
  • the public information of the cell is system information, and the system information in each narrow band is different.
  • the base station sends control information and user-specific information for scheduling user-specific information in the narrowband 2 of the radio frame N+M subframe x.
  • the RRC connection has not been established yet, and the user-specific information is the message 4 in the random access process.
  • the user-specific search space of the control channel carrying the control information for scheduling the user-specific information is not determined yet, and the cell common search space is still used.
  • the user-specific search space is used after the RRC connection is established.
  • different system information is transmitted in different narrowbands in the system bandwidth, and the narrowband allocation information added in the broadcast information enables terminals of different service types to receive respective system information in different narrowbands, thereby helping to reduce different services.
  • the interference of the types of terminals within the same narrow band allows each narrow band to operate independently.
  • the base station When transmitting the downlink information, the base station transmits synchronization information and broadcast information in a central narrowband position of the system bandwidth of the subframe N of the radio frame, wherein the center narrowband is 72 subcarriers, and the synchronization information is transmitted in the narrowband position of the system bandwidth center of the radio frame N subframe 5.
  • the center narrowband is 72 subcarriers
  • the synchronization information is transmitted in the narrowband position of the system bandwidth center of the radio frame N subframe 5.
  • the base station transmits control information and cell public information for scheduling the public information of the cell in the narrowband 3 and the narrowband 2 of the radio frame N subframe 1, wherein the public search space of the cell where the control channel carrying the public information of the cell is located in the two PRBs of the narrowband center,
  • the cell public information is system information, RAR message, and Paging message, and the cell public information in the two narrow bands may be different. At this time, both the coverage enhanced MTC terminal and the low cost MTC terminal use the same narrowband transmission cell public information.
  • the base station transmits control information and user-specific information for scheduling user-specific information in the narrowband 1 of the radio frame N+M subframe x, and transmits control information and user-specific information for scheduling coverage enhancement user-specific information in the narrowband 5,
  • the RRC connection has not been established yet, wherein the user-specific information is the message 4 in the random access process, and the user-specific search space of the control channel carrying the control information for scheduling the user-specific information has not been determined yet, and is still used.
  • the user-specific search space is used after the RRC connection is established.
  • different cell-specific information is transmitted in different narrowbands of the system bandwidth, which is advantageous for carrying a public message of a cell with a larger content, and at the same time, different terminals use different narrowbands to receive the public message of the cell, so as to prevent the public message of different cells from being carried in the same narrowband.
  • the base station When transmitting the downlink information, the base station transmits synchronization information and broadcast information in a central narrowband position of the system bandwidth of the radio frame N subframe 0, wherein the central narrowband is 72 subcarriers, and the broadcast information includes system frame number information and narrowband allocation information, in the radio frame N.
  • the subframe 5 system bandwidth center narrowband position transmits synchronization information.
  • the narrowband allocation information indicates that there are five narrowbands available in the system bandwidth, respectively located in the center narrowband with a positive offset of 1-2 narrowbands and a negative offset of 1-2 narrowbands, from low frequency to high frequency numbered narrowband 1-5.
  • the base station sends control information for scheduling the public information of the cell and the public information of the cell in the narrow band of the N subframe 1 of the radio frame.
  • the common search space of the cell where the control channel carrying the public information of the cell is located is located in two PRBs on both sides of the narrowband edge to aggregate.
  • the public information of the community is system information.
  • the base station transmits control information and user-specific information for scheduling user-specific information in the narrowband 5 of the radio frame N+M subframe x.
  • the narrowband position is determined by the narrowband allocation information in the broadcast information or the corresponding system information is added.
  • the high layer signaling indicates the decision.
  • the RRC connection has not been established yet, wherein the user-specific information is the high-level signaling information before the RRC connection is established, and the user-specific search space of the control channel carrying the control information for scheduling the user-specific information has not been determined yet.
  • a predefined user-specific search space is provided.
  • the user-specific search space configured by the higher layer signaling after the RRC connection is established.
  • Open loop MIMO precoding based on DMRS pilot pre-defined is used when transmitting the above control channel carrying control information for scheduling user-specific information.
  • the CRS pilot is simultaneously transmitted in the narrow band.
  • the terminal jointly uses the CRS pilot when demodulating the control information, first adds a predefined open-loop MIMO precoding to the CRS pilot value, and then merges with the channel estimation result of the DMRS.
  • the same narrowband is sent in the system bandwidth, and the public information is sent through the broadcast information.
  • the added narrowband allocation information or the high-level signaling indication of the system system enables different terminals to receive respective user-specific information in different narrowbands, which can avoid the problem of narrow-band bearing when the public message and the proprietary message are simultaneously received, and improve the system. Bandwidth usage efficiency. And use two pilots at the same time to improve transmission performance.
  • the base station When transmitting the downlink information, the base station transmits synchronization information and broadcast information in a central narrowband position of the system bandwidth of the subframe N of the radio frame, wherein the center narrowband is 72 subcarriers, and the synchronization information is transmitted in the narrowband position of the system bandwidth center of the radio frame N subframe 5.
  • the broadcast channel carrying the broadcast information uses a DMRS pilot-based transmission mode, and does not use precoding.
  • the CRS pilot is still transmitted in the system, and the channel estimation result of the two pilots is directly combined when the terminal receives.
  • the control channel resources are occupied and distributed transmission mode is adopted.
  • the control information of the public information of the scheduling cell indicates that the corresponding public information of the cell is located in all the PRB resources of the three narrowbands in the next subframe frequency, and the public information of the cell is system information.
  • the base station sends the control information for scheduling the user-specific information in the narrowband of the radio frame N+M subframe x center.
  • the RRC connection has not been established yet, and the user-specific information is the high-level signaling information before the establishment of the RRC connection, and the bearer scheduling is performed.
  • the user-specific search space of the control channel of the control information of the user-specific information is not yet determined at this time, and uses the same predefined search space as the public search space.
  • the user-specific search space occupies all six PRBs in the narrowband,
  • the predefined user-specific search space is still used after the RRC connection is established.
  • the control information for scheduling user-specific information indicates that the corresponding user-specific information is located in the four sub-frames of the next sub-frame offset by four PRB resources.
  • Open loop MIMO precoding based on DMRS pilot pre-defined is used when transmitting the above control channel carrying control information for scheduling user-specific information.
  • the CRS pilot is simultaneously transmitted in the narrow band.
  • the terminal jointly uses the CRS pilot when demodulating the control information, first adds a predefined open-loop MIMO precoding to the CRS pilot value, and then merges with the channel estimation result of the DMRS.
  • Closed-loop MIMO precoding based on DMRS pilots is used when transmitting the above-mentioned downlink physical traffic channel carrying user-specific information.
  • the CRS pilot is simultaneously transmitted in the narrow band.
  • the terminal jointly uses the CRS pilot when demodulating the control information, and first adds a predefined closed-loop MIMO precoding to the CRS pilot value, and the precoding sequence number is notified by scheduling control information of the user-specific information, and then the channel with the DMRS. The estimated results are combined.
  • control information for scheduling the public information of the cell and the control information for scheduling the user-specific information are transmitted in the narrowband of the system bandwidth center, and the cross-subframe scheduling is adopted, so that the narrow information of the narrow information of the data information is very flexible and does not need to use narrowband allocation. information.
  • different channels can use different transmissions. Way to improve the performance of each channel.
  • the synchronization information and the broadcast information are sent in the center narrowband position of the system bandwidth of the subframe N of the radio frame N, wherein the central narrowband is 72 subcarriers, and the synchronization information is sent in the narrowband position of the system bandwidth center of the radio subframe N subframe 5,
  • the broadcast information includes system frame number information and narrowband allocation information.
  • the narrowband allocation information indicates that there are 6 narrowbands available in the system bandwidth, respectively located in the center narrowband with a positive offset of 1-2 narrowbands and a negative offset of 1-3 narrowbands, from low frequency to high frequency numbered narrowband 1-6.
  • the broadcast channel carrying the broadcast information uses a DMRS pilot-based transmission mode, and does not use precoding. At the same time, the CRS pilot is still transmitted in the system, and the channel estimation result of the two pilots is directly combined when the terminal receives.
  • the base station sends control information for scheduling the public information of the cell in the narrowband 3 of the N subframe 1 of the radio frame.
  • the control channel resources are occupied and distributed transmission mode is adopted.
  • the control information for scheduling the public information of the cell indicates that the corresponding public information of the cell is located in one PRB resource in the same narrow band of the subframe immediately following the public search space, and the public information of the cell is system information.
  • the base station sends the control information for scheduling the user-specific information in the narrowband 3 of the radio frame N+M subframe x, and the RRC connection is not yet established.
  • the user-specific information is sent by the upper layer before the RRC connection is established, and the bearer scheduling is performed.
  • the user-specific search space configured by the higher layer signaling after the RRC connection is established.
  • the control information for scheduling user-specific information indicates that the corresponding user-specific information is located in four PRB resources in the narrowband 2 of the next subframe.
  • Open loop MIMO precoding based on DMRS pilot pre-defined is used when transmitting the above control channel carrying control information for scheduling user-specific information.
  • the CRS pilot is simultaneously transmitted in the narrow band.
  • the terminal jointly uses the CRS pilot when demodulating the control information, first adds a predefined open-loop MIMO precoding to the CRS pilot value, and then merges with the channel estimation result of the DMRS.
  • Closed-loop MIMO precoding based on DMRS pilots is used when transmitting the above-mentioned downlink physical traffic channel carrying user-specific information.
  • the CRS pilot is simultaneously transmitted in the narrow band.
  • the terminal jointly uses the CRS pilot when demodulating the control information, and first adds a predefined closed-loop MIMO precoding to the CRS pilot value, and the precoding sequence number is notified by scheduling control information of the user-specific information, and then the channel with the DMRS. The estimated results are combined.
  • control information for scheduling the public information of the cell, the public information of the cell, and the control information for scheduling the user-specific information are sent in the same narrow band of the system bandwidth, and the narrowband of the control information is determined by the narrowband allocation information, and the subframe/cross-subframe is adopted.
  • Frame scheduling makes data information occupy narrowband resources very flexible and improves system efficiency. Pass Two pilots are used in combination, and different channels can use different transmission modes to improve the performance of each channel.
  • the synchronization information and the broadcast information are transmitted in the center narrowband position of the system bandwidth of the radio frame N subframe 0, and the system bandwidth is the same as the narrowband bandwidth.
  • the synchronization information is transmitted at the narrowband position of the system bandwidth center of the radio frame N subframe 5.
  • the control channel resources are occupied and distributed transmission mode is adopted.
  • the control information for scheduling the public information of the cell indicates that the corresponding public information of the cell is located in two PRB resources in the center of the subframe, and the public information of the cell is system information.
  • the base station sends the control information for scheduling the user-specific information in the narrowband of the radio frame N+M subframe x center.
  • the RRC connection has not been established yet, and the user-specific information is the high-level signaling information before the establishment of the RRC connection, and the bearer scheduling is performed.
  • the user-specific search space of the control channel of the control information of the user-specific information is not determined at this time, and the same predefined search space as the public search space is used.
  • the user-specific search space occupies 2 PRBs of the narrow-band inner edge,
  • the predefined user-specific search space is still used after the RRC connection is established.
  • the control information for scheduling user-specific information indicates that the corresponding user-specific information is located in two PRB resources in the center of the next subframe.
  • Open loop MIMO precoding based on DMRS pilot pre-defined is used when transmitting the above control channel carrying control information for scheduling user-specific information.
  • the CRS pilot is simultaneously transmitted in the narrow band.
  • the terminal jointly uses the CRS pilot when demodulating the control information, first adds a predefined open-loop MIMO precoding to the CRS pilot value, and then merges with the channel estimation result of the DMRS.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Further, they may be implemented by program code executable by the computing device such that they may be stored in the storage device for execution by the computing device and, in some cases, may be performed in a different order than herein.
  • the steps shown or described are either made separately into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the foregoing embodiments of the present invention can be applied to the communication field, and solve the problem that the downlink information cannot be received in the bandwidth limited scenario in the related technology, and the correct reception of the downlink information is ensured.

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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 et un dispositif d'envoi et de réception d'informations de liaison descendante. Le procédé selon l'invention consiste : à regrouper des canaux transportant différentes informations de liaison descendante ; et à attribuer les canaux regroupés sur des ressources à bande étroite et à les envoyer. La présente invention permet de résoudre le problème des antériorités lié au fait que des informations de liaison descendante ne peuvent pas être reçues dans un scénario à bande passante restreinte, ce qui garantit la réception correcte des informations de liaison descendante.
PCT/CN2015/088055 2014-11-07 2015-08-25 Procédé et dispositif d'envoi et de réception d'informations de liaison descendante WO2016070675A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022061588A1 (fr) * 2020-09-23 2022-03-31 Qualcomm Incorporated Sélection et resélection de cellule autonomes avec des informations de largeur de bande de canal

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111342868B (zh) * 2016-06-22 2021-06-25 上海朗帛通信技术有限公司 一种大尺度mimo的传输方法和装置
US10667266B2 (en) 2016-08-12 2020-05-26 Nokia Technologies Oy Resource indication for bandwidth allocation in wireless communication
WO2018035816A1 (fr) * 2016-08-25 2018-03-01 华为技术有限公司 Procédé de transmission de données, dispositif terminal, et station de base
CN106792792B (zh) * 2016-09-30 2019-01-29 展讯通信（上海）有限公司 基站、用户终端及其下行数据控制方法及装置
JP6378279B2 (ja) * 2016-10-06 2018-08-22 株式会社Ｎｔｔドコモ ユーザ装置、及び基地局
WO2018094618A1 (fr) * 2016-11-23 2018-05-31 华为技术有限公司 Procédé et dispositif d'attribution de ressource et de transmission de paquet de données
CN108282893B (zh) * 2017-01-06 2022-03-22 展讯通信（上海）有限公司 公共控制消息的传输方法、接收方法、基站及用户设备
CN109660315B (zh) * 2017-10-10 2021-08-17 北京紫光展锐通信技术有限公司 基于dmrs的pdcch盲检方法及装置、存储介质、用户设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103096379A (zh) * 2011-11-07 2013-05-08 华为技术有限公司 控制信息传输方法
CN103220809A (zh) * 2012-01-20 2013-07-24 中兴通讯股份有限公司 一种下行物理控制信道的发送、接收方法及相应装置
WO2013175181A1 (fr) * 2012-05-21 2013-11-28 Sony Corporation Système, procédé et station de base pour l'affectation de ressources dans une pluralité de sous-trames
CN103428859A (zh) * 2012-05-16 2013-12-04 中兴通讯股份有限公司 下行信息传输方法、基站及用户设备
CN103716841A (zh) * 2012-09-29 2014-04-09 中兴通讯股份有限公司 信息传输方法及装置
CN104104467A (zh) * 2013-04-03 2014-10-15 中兴通讯股份有限公司 下行数据的传输、传输处理方法及装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103096379A (zh) * 2011-11-07 2013-05-08 华为技术有限公司 控制信息传输方法
CN103220809A (zh) * 2012-01-20 2013-07-24 中兴通讯股份有限公司 一种下行物理控制信道的发送、接收方法及相应装置
CN103428859A (zh) * 2012-05-16 2013-12-04 中兴通讯股份有限公司 下行信息传输方法、基站及用户设备
WO2013175181A1 (fr) * 2012-05-21 2013-11-28 Sony Corporation Système, procédé et station de base pour l'affectation de ressources dans une pluralité de sous-trames
CN103716841A (zh) * 2012-09-29 2014-04-09 中兴通讯股份有限公司 信息传输方法及装置
CN104104467A (zh) * 2013-04-03 2014-10-15 中兴通讯股份有限公司 下行数据的传输、传输处理方法及装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022061588A1 (fr) * 2020-09-23 2022-03-31 Qualcomm Incorporated Sélection et resélection de cellule autonomes avec des informations de largeur de bande de canal

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