WO2017167158A1 - Procédé et dispositif destinés à transmettre des informations de configuration pilote, et système - Google Patents

Procédé et dispositif destinés à transmettre des informations de configuration pilote, et système Download PDF

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Publication number
WO2017167158A1
WO2017167158A1 PCT/CN2017/078323 CN2017078323W WO2017167158A1 WO 2017167158 A1 WO2017167158 A1 WO 2017167158A1 CN 2017078323 W CN2017078323 W CN 2017078323W WO 2017167158 A1 WO2017167158 A1 WO 2017167158A1
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WIPO (PCT)
Prior art keywords
csi
configuration
type
ports
aggregation
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PCT/CN2017/078323
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English (en)
Chinese (zh)
Inventor
李永
陈艺戬
李儒岳
鲁照华
吴昊
肖华华
王瑜新
蔡剑兴
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中兴通讯股份有限公司
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Publication of WO2017167158A1 publication Critical patent/WO2017167158A1/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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of communications, and in particular to a method, device, and system for transmitting pilot configuration information.
  • LTE/LTE-A Long Term Evolution (LTE)/LTE-Advanced (LTE-A) technology is the mainstream fourth-generation mobile communication technology (4G).
  • LTE/LTE-A is divided into two different duplex modes: Frequency Division Duplex (FDD) and Time Division Duplex (TDD).
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the frame structure of the frequency division duplex mode is called a frame structure type 1 (Frame structure type 1)
  • the frame structure of the time division duplex mode is called a frame structure type 2 (Frame structure type 2).
  • a subframe is defined as consisting of two consecutive time slots, that is, subframe i consists of time slots 2i and 2i+1; for FDD duplex mode, at 10 millisecond intervals 10 subframes are used for downlink transmission, 10 subframes are used for uplink transmission, and uplink transmission and downlink transmission are performed on different frequencies respectively.
  • the terminal UE, User Equipment
  • the full-duplex FDD mode there is no such limitation.
  • each field consisting of two half-frames
  • each field consists of 5 subframes
  • the uplink-downlink configuration change of a cell occurs between frames, and the uplink and downlink transmission occurs on a subframe of a frame.
  • the uplink and downlink configuration of the current frame is obtained by high layer signaling.
  • UpPTS uplink pilot time slot
  • LTE/LTE-A technology downlink transmission uses Orthogonal Frequency Division Multiplexing (OFDM) modulation technology, data is modulated on the subcarriers in the frequency domain, and then converted to the time domain to increase the upper cyclic prefix. Form a complete time domain transmit OFDM symbol.
  • a cyclic prefix (CP) is used to resist symbol interference generated by multipath in the time domain and inter-subcarrier interference generated in the frequency domain.
  • CP cyclic prefix
  • NCP normal cyclic prefix
  • ECP extended cyclic prefix
  • Extended CP applications are used in scenarios where multipath delays are extended.
  • the subcarrier spacing is 15 kHz; in the case of an extended CP, there are two subcarrier spacings, 15 kHz and 7.5 kHz, respectively.
  • the signal transmitted in each time slot is described by one or more resource grids, and the resource grid is composed of Subcarriers and OFDM symbols are constructed. among them, Representing the number of Physical Resource Blocks (PRBs) or Resource Blocks (RBs), Represents the number of subcarriers in the resource block, Represents the number of OFDM symbols in a slot.
  • Table 2 shows the physical resource block parameters. The number of OFDM symbols and the number of subcarriers on one RB are shown in Table 2.
  • Table 3 shows the OFDM symbol parameters, and the length of the cyclic prefix is as shown in Table 3.
  • Number of physical resource blocks It is determined by the downlink transmission bandwidth configured by the cell, and has a minimum value of 6 and a maximum value of 110.
  • the same PRB on two consecutive time slots in the same subframe is called a PRB pair.
  • each unit in a resource grid is called a resource element (RE, Resource Element), and is marked with an index pair (k, l). among them, Indicates the subcarrier number in the frequency domain. Indicates the OFDM symbol number in the time domain.
  • An antenna port is defined as the channel through which symbols transmitted on this antenna port pass, and can be guessed by the channel through which other symbols transmitted on the same port pass.
  • An antenna port is also defined with a corresponding sequence number to distinguish between antenna ports and an index of the antenna port.
  • the Downlink Physical Channel corresponds to a set of resource units for carrying information from the upper layer.
  • the downlink physical information includes: a Physical Downlink Shared Channel (PDSCH), a Physical Multicast Channel (PMCH), a Physical Broadcast Channel (PBCH), and physical control.
  • the Enhanced Physical Downlink Control Channel (EPDCCH) is enhanced.
  • the downlink physical signal corresponds to a set of resource elements, which are used by the physical layer and are not used to carry upper layer information.
  • the downlink physical signals include: a pilot signal (RS, a reference signal), a synchronization signal, and a discovery signal.
  • the pilot signal is also called a pilot, and has the following types: Cell-specific Reference Signal (CRS), and Multicast Broadcast Single Frequency Network (Mb) MBSFN) pilot (MBSFN reference signals), UE-specific pilot (Demodulation Reference Signal (DMRS)), positioning pilot signal, CSI reference signal (CSI reference signal, CSI for short) -RS).
  • CRS Cell-specific Reference Signal
  • Mb Multicast Broadcast Single Frequency Network
  • DMRS Demodulation Reference Signal
  • CSI reference signal CSI reference signal
  • CSI reference signal CSI for short
  • the UE-specific pilots have the following two types: UE-specific reference signals associated with PDSCH and Demodulation reference signals associated with EPDCCH.
  • CSI-RS Channel State Measurement Pilot
  • NZP CSI-RS non-zero power CSI-RS
  • the mode is implemented as a zero-power CSI-RS (ZP CSI-RS), and the corresponding resource unit set is a Zero Power CSI-RS Resource.
  • ZP CSI-RS zero-power CSI-RS
  • CSI-IM Resource Channel-State Information-Interference Measurement Resource
  • the CSI-RS configuration (CSI-RS configuration) is used to indicate the RE mapped by the CSI-RS, that is, the RE used for transmitting the CSI-RS, and the CSI-RS configuration sequence number is used to distinguish different CSI-RS configurations.
  • a CSI reference signal subframe configuration is used to indicate a subframe in which a CSI-RS transmission is located.
  • a CSI-RS configuration is a CSI-RS configuration with a certain number of antenna ports, for example, a CSI-RS configuration with a configuration number of 0 with an antenna port number of 8.
  • the serial number is the index number.
  • a CSI-RS having a port number of 1, 2, 4, 8, 12, 16 is supported, and the number of CSI-RS resource patterns of these port numbers is repeated on each PRB pair of the bandwidth range on the transmission subframe.
  • the CSI-RS resource with the port number of 1, 2, 4, and 8 is composed of a single CSI-RS resource, and the CSI-RS resources with the port number of 12 and 16 are configured by multiple CSI-RSs. Aggregated.
  • the base station or the terminal usually measures the channel state through a channel state measurement process (CSI Process).
  • CSI Process channel state measurement process
  • One CSI-RS resource is usually configured in one CSI process, and the terminal feeds back according to the measurement of the CSI-RS.
  • FIG. 4 is a schematic diagram of a resource pattern of a CSI-RS on an RB pair according to a port number of 4 in the related art
  • FIG. 5 is a resource pattern of a CSI-RS on an RB pair according to the related art in FIG. schematic diagram.
  • the ports are divided into multiple groups, and the ports in the group are code division multiplexed.
  • the base station notifies the terminal about the CSI-RS by using upper layer signaling, and the information includes: a CSI-RS resource configuration identifier, a CSI-RS port number, a CSI-RS configuration, and a CSI-RS subframe. Configuration.
  • the CRS can be used for both channel state measurement and channel coefficient estimation when receiving demodulation, but as the number of ports increases, the overhead increases dramatically. Therefore, when the number of ports is 8, the CRS is no longer used to measure the channel state, and the CSI-RS with low pilot density and low overhead is used instead. But as technology and demand evolve, it needs Techniques for further development of a greater number of antenna termination applications, such as the number of ports 20, 24, 28, 32, etc., involve measurements of the channel state of these larger numbers of ports, however, the prior art cannot support more ports than 16 CSI-RS transmission.
  • the density of CSI-RS transmission is 1RE/PRB/Port, that is, the CSI-RS of each port is transmitted on each RB of the system bandwidth, and on average, each port uses one RE per RB. .
  • the overhead of CSI-RS transmission over the system bandwidth will increase.
  • the overhead of CSI-RS transmission is increased, and the efficiency of data transmission by the system is reduced.
  • the embodiment of the invention provides a method, a device and a system for transmitting pilot configuration information, so as to at least solve the problem that the CSI-RS transmission in the related art has a large overhead on the system bandwidth and reduces the efficiency of the system transmission data.
  • a method for transmitting pilot configuration information is provided.
  • the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration sequence number.
  • CSI-RS configurations there are at least two types of CSI-RS configurations in the configuration information.
  • the number of ports of the first type of CSI-RS configuration of the two types is different from the number of ports of the second type of CSI-RS configuration of the two types;
  • the pilot density of the first type of CSI-RS configuration of the two types is different from the pilot density of the second type of CSI-RS configuration of the two types.
  • the configuration information of the CSI-RS resource further includes: aggregation mode indication information, the candidate aggregation mode has a Q class, and Q is an integer greater than 1.
  • the first type of CSI-RS configuration of the two types is the same as the two types of the two types.
  • the second type of CSI-RS configuration has a different number of ports;
  • the first type of CSI-RS configuration is different from the second type CSI-RS configuration.
  • the first type of CSI-RS configuration is different from the pilot density of the configuration of the second type CSI-RS;
  • the partial resource unit RE does not transmit the CSI-RS in the aggregation of the CSI-RS configuration.
  • the first type of code division multiplexing length is 4, and the second type of code division multiplexing length is 8;
  • the first type of pilot density is 1RE per port per RB
  • the second type of pilot density is 0.5RE per port per RB.
  • the number of ports of the CSI-RS is divided into at least two sets, and the CSI-RS corresponding to the first set of the two sets adopts a first type of aggregation mode, and the second set of the two sets The corresponding CSI-RS adopts a second type of aggregation mode, wherein the first type of aggregation mode is different from the second type of aggregation mode.
  • the first type of aggregation mode is different from the second type of aggregation mode, including at least one of the following:
  • the number of ports participating in an aggregated CSI-RS configuration is only one.
  • the number of ports participating in an aggregated CSI-RS configuration is multiple. ;
  • the pilot density of the CSI-RS configuration participating in the same aggregation is only one type.
  • the pilots participating in an aggregated CSI-RS configuration are involved. There are many kinds of density;
  • the first type of aggregation mode all REs of the CSI-RS configuration are transmitted with CSI-RS.
  • the second type of aggregation mode some REs in the aggregation of the CSI-RS configuration do not transmit CSI- RS.
  • the configuration information of the CSI-RS resource further includes: RE information indicating that the CSI-RS is not transmitted.
  • CSI-RS in which the CSI-RS configuration port number is M a part of the REs in the aggregation of the CSI-RS configuration does not transmit the CSI-RS, where M is an integer greater than 1.
  • the CSI-RS code division multiplexing mode is divided into two sets, and the corresponding CSI is set in the first one of the two sets.
  • M is an integer greater than 1.
  • the code division multiplexing length of the first set is 2, and the code division multiplexing length of the second set is 4.
  • M is 20 or 28.
  • the configuration information of the CSI-RS resource further includes: pilot density indication information of the CSI-RS configuration.
  • a method for transmitting pilot configuration information including:
  • the signaling is signaling including configuration information of a transport channel state measurement pilot resource CSI-RS resource;
  • the configuration information includes: number of ports, number of CSI-RS configurations, CSI-RS configuration Number of ports, CSI-RS configuration number.
  • CSI-RS configurations there are at least two types of CSI-RS configurations in the configuration information.
  • the number of ports of the first type of CSI-RS configuration of the two types is different from the number of ports of the second type of CSI-RS configuration of the two types;
  • the pilot density of the first type of CSI-RS configuration of the two types is different from the pilot density of the second type of CSI-RS configuration of the two types.
  • the configuration information of the CSI-RS resource further includes: aggregation mode indication information, the candidate aggregation mode has a Q class, and Q is an integer greater than 1.
  • the first type of CSI-RS configuration of the two types is the same as the two types of the two types.
  • the second type of CSI-RS configuration has a different number of ports;
  • the first type of CSI-RS configuration is different from the second type CSI-RS configuration.
  • the first type of CSI-RS configuration is different from the pilot density of the configuration of the second type CSI-RS;
  • the partial resource unit RE does not transmit the CSI-RS in the aggregation of the CSI-RS configuration.
  • the first type of code division multiplexing length is 4, and the second type of code division multiplexing length is 8;
  • the first type of pilot density is 1RE per port per RB
  • the second type of pilot density is 0.5RE per port per RB.
  • the number of ports of the CSI-RS is divided into at least two sets, and the CSI-RS corresponding to the first set of the two sets adopts a first type of aggregation mode, and the second set of the two sets The corresponding CSI-RS adopts a second type of aggregation mode, where the first type of aggregation mode and the second type of aggregation mode Not the same.
  • the first type of aggregation mode is different from the second type of aggregation mode, including at least one of the following:
  • the number of ports participating in an aggregated CSI-RS configuration is only one.
  • the number of ports participating in an aggregated CSI-RS configuration is multiple. ;
  • the pilot density of the CSI-RS configuration participating in the same aggregation is only one type.
  • the pilots participating in an aggregated CSI-RS configuration are involved. There are many kinds of density;
  • the first type of aggregation mode all REs of the CSI-RS configuration are transmitted with CSI-RS.
  • the second type of aggregation mode some REs in the aggregation of the CSI-RS configuration do not transmit CSI- RS.
  • the configuration information of the CSI-RS resource further includes: RE information indicating that the CSI-RS is not transmitted.
  • CSI-RS in which the CSI-RS configuration port number is M a part of the REs in the aggregation of the CSI-RS configuration does not transmit the CSI-RS, where M is an integer greater than 1.
  • the CSI-RS code division multiplexing mode is divided into two sets, and the corresponding CSI is set in the first one of the two sets.
  • M is an integer greater than 1.
  • the code division multiplexing length of the first set is 2, and the code division multiplexing length of the second set is 4.
  • M is 20 or 28.
  • the configuration information of the CSI-RS resource further includes: pilot density indication information of the CSI-RS configuration.
  • a transmission apparatus for pilot configuration information is further provided, which is located at a base station side, and includes:
  • a sending module configured to send signaling that includes configuration information of a transport channel state measurement pilot resource CSI-RS resource
  • the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration sequence number.
  • a transmission device for transmitting pilot configuration information which is located in the terminal, and includes:
  • a receiving module configured to receive signaling sent by the base station, where the signaling is signaling that includes configuration information of a transport channel state measurement pilot CSI-RS resource resource;
  • the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration sequence number.
  • a transmission system for pilot configuration information including: a terminal and a base station;
  • the terminal is configured to receive signaling sent by the base station, where the signaling is signaling that includes configuration information of a channel state measurement pilot CSI-RS resource resource;
  • the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration sequence number.
  • a computer storage medium is further provided, and the computer storage medium may store an execution instruction for performing the implementation of the transmission method of the pilot configuration information in the foregoing embodiment.
  • the base station sends signaling including the configuration information of the transport channel state measurement pilot resource CSI-RS resource, where the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and CSI-
  • the RS configuration sequence number solves the problem that the CSI-RS transmission in the related art has a large overhead on the system bandwidth, reduces the efficiency of the system transmission data, and reduces the overhead of the CSI-RS transmission, thereby improving the efficiency of the system transmission data.
  • FIG. 1 is a schematic diagram of a first type of frame structure according to the related art
  • FIG. 2 is a schematic diagram of a second type of frame structure according to the related art
  • FIG. 3 is a schematic diagram of a downlink resource grid according to the related art
  • FIG. 4 is a schematic diagram of a resource pattern of a CSI-RS with a port number of 4 on one RB pair according to the related art
  • FIG. 5 is a schematic diagram of a resource pattern of a CSI-RS with a port number of 8 on one RB pair according to the related art
  • FIG. 6 is a flowchart 1 of a method for transmitting pilot configuration information according to an embodiment of the present invention.
  • FIG. 7 is a second flowchart of a method for transmitting pilot configuration information according to an embodiment of the present invention.
  • FIG. 8 is a structural block diagram 1 of a transmission apparatus for pilot configuration information according to an embodiment of the present invention.
  • FIG. 9 is a structural block diagram 2 of a transmission apparatus for pilot configuration information according to an embodiment of the present invention.
  • FIG. 6 is a flowchart 1 of a method for transmitting pilot configuration information according to an embodiment of the present invention. As shown in FIG. 6, the process includes the following steps. step:
  • Step S602 The base station generates signaling for configuring configuration information of a pilot channel state measurement pilot pilot resource CSI-RS resource, where the configuration information includes: number of ports, number of CSI-RS configurations, number of CSI-RS configuration ports, and CSI-RS configuration Serial number
  • Step S604 the base station sends the signaling.
  • the base station sends signaling including configuration information of the transport channel state measurement pilot resource CSI-RS resource, where the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration.
  • the serial number solves the problem that the CSI-RS transmission in the related technology has a large overhead on the system bandwidth, reduces the problem of the efficiency of the system transmission data, reduces the overhead of the CSI-RS transmission, and improves the efficiency of the system transmission data.
  • the CSI-RS with the port number greater than 16 but also the newly designed CSI-RS is compatible with the CSI-RS in the original version, thereby reducing the overhead of the CSI-RS transmission and improving the system transmission data. s efficiency.
  • the CSI-RS configuration participating in the aggregation has two types with greater flexibility than a single type. For example, if the number of CSI-RSs with the number of ports is 20, the CSI-RS configuration with the port number of 8 is used for aggregation. Because 20 is not an integer multiple of 8, the aggregation can only be performed with three CSI-RS configurations with a port number of 8. , will waste 4 ports of resources. If two CSI-RS configurations with a port number of 8 and a CSI-RS configuration with a port number of 4 participate in the aggregation, port resources are not wasted.
  • a CSI-RS configuration with a code division multiplexing length of 8 is used for aggregation, three groups of 8 REs, that is, 24 REs, are used, and 4 REs are wasted; and 2 sets of CSIs with a code length of 8 are used.
  • the RS configuration and a set of CSI-RS configurations with a code division multiplexing length of 4 can fully utilize power without wasting resources.
  • the number of ports of the first type of CSI-RS configuration of the two types is different from the number of ports of the second type of CSI-RS configuration of the two types;
  • the pilot density of the first type of CSI-RS configuration of the two types is different from the pilot density of the second type of CSI-RS configuration of the two types.
  • pilot densities which can flexibly meet the requirements of CSI-RS for users with cost-saving and compatible transmission versions, and can select an appropriate proportion of pilot density according to different channel scenarios.
  • the configuration information of the CSI-RS resource further includes: aggregation mode indication information, the candidate aggregation mode has a Q class, and Q is an integer greater than 1.
  • the candidate aggregation mode type At least one of the following types exists in the candidate aggregation mode type:
  • the first type of CSI-RS configuration of the two types and the second of the two types of the two types The number of ports of the configuration of the type CSI-RS is different;
  • the first type of CSI-RS configuration is different from the code division multiplexing manner of the configuration of the second type of CSI-RS;
  • the RE is a CSI-RS configuration with a port number of 8 in the multiplexing group.
  • a CSI-RS with a number of aggregation ports of 20 or 28 wastes resources.
  • the number of ports using the REs of adjacent subcarriers is a code division multiplexing group.
  • a CSI-RS configuration of 8 and a RE of a conventional 4-port CSI-RS are CSI-RSs with a port number of 4 and a CSI-RS configuration aggregation port number of 20 or 28, which does not waste resources.
  • the first type of CSI-RS configuration is different from the pilot density of the configuration of the second type of CSI-RS;
  • pilot densities which can flexibly meet the requirements of CSI-RS for users with cost-saving and compatible transmission versions, and can select an appropriate proportion of pilot density according to different channel scenarios.
  • a part of resource elements RE in the aggregation of the CSI-RS configuration does not transmit the CSI-RS.
  • CSI-RS configuration with a port number of 8 cannot be used to aggregate CSI-RSs whose number of ports is not an integer multiple of 8.
  • the number of ports can be aggregated to be less than 8. An integer multiple of the CSI-RS.
  • the first type of code division multiplexing length is 4, and the second type of code division multiplexing length is 8; it should be noted that the code division multiplexing length is 4 CSI.
  • the -RS configuration type and the CSI-RS configuration type with a code division multiplexing length of 8 participate in aggregation, which provides greater flexibility.
  • the first type of pilot density is 1RE per port per RB
  • the second type of pilot density is 0.5RE per port per RB.
  • the first type of pilot density is that the average RB of the RB per resource block per port can be compatible with the traditional CSI-RS, and the second type of pilot density is 0.5RE per port per RB.
  • the adjacent RBs respectively transmit CSI-RSs of different ports, while reducing overhead.
  • the number of ports of the CSI-RS is divided into at least two sets, and the CSI-RS corresponding to the first set of the two sets adopts a first type of aggregation mode, and the second of the two sets The CSI-RS corresponding to the set adopts the second type of aggregation mode, wherein the first type of aggregation mode is different from the second type of aggregation mode.
  • Another embodiment of the present embodiment is that the number of ports of the CSI-RS is divided into two sets, the CSI-RS corresponding to the first set adopts the first type of aggregation mode, and the second set corresponds to the CSI-RS adopts the second type. Types of aggregation; the first type of aggregation is different from the second type of aggregation.
  • the CSI-RSs with different port numbers are suitable for different aggregation modes, for example, the number of ports is an integer multiple of 8, ⁇ 24, 32 ⁇ , and the number of ports is 8 CSI-RS configuration aggregation; A non-integer multiple of 8, ⁇ 20, 28 ⁇ , a CSI-RS configuration with a port number of 8 and a CSI-RS configuration with a port number of 4.
  • the number of ports is an integer multiple of 8, ⁇ 24, 32 ⁇ , CSI-RS configuration aggregation with a code division multiplexing length of 8; a non-integer multiple of 8 ports, ⁇ 20, 28 ⁇ , using code division A CSI-RS configuration of length 8 is used to aggregate with a CSI-RS configuration with a code division multiplexing length of 4.
  • the number of ports is an integer multiple of 8, ⁇ 24, 32 ⁇ , and the number of ports is 8 CSI-RS configuration aggregation, all the aggregated REs transmit CSI-RS; the number of ports is a non-integer multiple of 8, ⁇ 20, 28 ⁇ , CSI-RS configuration with port number 8 is used for aggregation. Some REs in the aggregation do not transmit CSI-RS.
  • the first type of aggregation mode is different from the second type of aggregation mode, including at least one of the following:
  • the number of ports participating in an aggregated CSI-RS configuration is only one.
  • the number of ports participating in an aggregated CSI-RS configuration is multiple;
  • the code points of an aggregated CSI-RS configuration are involved. There are many ways to reuse;
  • the pilot density of the CSI-RS configuration participating in the same aggregation is only one.
  • the pilot density of the CSI-RS configuration participating in an aggregation is Multiple
  • the first type of aggregation mode all the REs of the CSI-RS configuration are transmitted with the CSI-RS.
  • the second type of aggregation mode some REs in the aggregation of the CSI-RS configuration do not transmit the CSI-RS.
  • the configuration information of the CSI-RS resource further includes: RE information indicating that the CSI-RS is not transmitted.
  • a part of the REs in the aggregation of the CSI-RS configuration does not transmit the CSI-RS, where M is an integer greater than 1.
  • the CSI-RS code division multiplexing mode is divided into two sets, and the first one of the two sets corresponds to A part of the REs in the aggregation of the CSI-RS configuration does not transmit the CSI-RS, and all the REs of the CSI-RS configuration corresponding to the second set of the two sets transmit the CSI-RS, where M is greater than 1. Integer.
  • a CSI-RS with a port number of M different aggregation modes are adopted in different code division multiplexing modes, so that different code division multiplexing modes can be supported.
  • a code division multiplexing length of 2 is used, and a CSI-RS configuration with a port number of 8 is used for aggregation, and some REs in the aggregation of the CSI-RS configuration are not transmitted.
  • the CSI-RS is configured to aggregate the CSI-RS configuration with the port number of 8 and the CSI-RS configuration with the port number of 4, and all the REs of the CSI-RS configuration are transmitted with the CSI-RS.
  • the first set has a code division multiplexing length of 2
  • the second set has a code division multiplexing length of 4.
  • M is 20 or 28.
  • the configuration information of the CSI-RS resource further includes: pilot density indication information of the CSI-RS configuration.
  • FIG. 7 is a second flowchart of a method for transmitting pilot configuration information according to an embodiment of the present invention. As shown in FIG. 7, the process includes the following steps. step:
  • Step S702 The terminal receives the signaling sent by the base station, where the signaling is signaling including configuration information of a transport channel state measurement pilot pilot resource CSI-RS resource, where the configuration information includes: the number of ports, the number of CSI-RS configurations, Number of CSI-RS configuration ports, CSI-RS configuration sequence number;
  • Step S704 the terminal parses the configuration information.
  • the terminal receives the signaling sent by the base station, where the signaling is signaling including the configuration information of the transmission channel state measurement pilot CSI-RS resource resource; the configuration information includes: the number of ports, the number of CSI-RS configurations, CSI - The number of RS configuration ports and the CSI-RS configuration sequence number.
  • the terminal parses the configuration information.
  • the number of ports of the first type of CSI-RS configuration of the two types is different from the number of ports of the second type of CSI-RS configuration of the two types;
  • the pilot density of the first type of CSI-RS configuration of the two types is different from the pilot density of the second type of CSI-RS configuration of the two types.
  • the configuration information of the CSI-RS resource further includes: aggregation mode indication information, the candidate aggregation mode has a Q class, and Q is an integer greater than 1.
  • the candidate aggregation mode type At least one of the following types exists in the candidate aggregation mode type:
  • the first type of CSI-RS configuration of the two types and the second of the two types of the two types The number of ports of the configuration of the type CSI-RS is different;
  • the first type of CSI-RS configuration is different from the code division multiplexing manner of the configuration of the second type of CSI-RS;
  • the first type of CSI-RS configuration is different from the pilot density of the configuration of the second type of CSI-RS;
  • a part of resource elements RE in the aggregation of the CSI-RS configuration does not transmit the CSI-RS.
  • the first type of code division multiplexing length is 4, and the second type of code division multiplexing length is 8;
  • the first type of pilot density is 1RE per port per RB
  • the second type of pilot density is 0.5RE per port per RB.
  • the number of ports of the CSI-RS is divided into at least two sets, and the CSI-RS corresponding to the first set of the two sets adopts a first type of aggregation mode, and the second of the two sets The CSI-RS corresponding to the set adopts the second type of aggregation mode, wherein the first type of aggregation mode is different from the second type of aggregation mode.
  • the first type of aggregation mode is different from the second type of aggregation mode, including at least one of the following:
  • the number of ports participating in an aggregated CSI-RS configuration is only one.
  • the number of ports participating in an aggregated CSI-RS configuration is multiple;
  • the code points of an aggregated CSI-RS configuration are involved. There are many ways to reuse;
  • the pilot density of the CSI-RS configuration participating in the same aggregation is only one.
  • the pilot density of the CSI-RS configuration participating in an aggregation is Multiple
  • the first type of aggregation mode all the REs of the CSI-RS configuration are transmitted with the CSI-RS.
  • the second type of aggregation mode some REs in the aggregation of the CSI-RS configuration do not transmit the CSI-RS.
  • the configuration information of the CSI-RS resource further includes: RE information indicating that the CSI-RS is not transmitted.
  • a part of the REs in the aggregation of the CSI-RS configuration does not transmit the CSI-RS, where M is an integer greater than 1.
  • the CSI-RS code division multiplexing mode is divided into two sets, and the first one of the two sets corresponds to A part of the REs in the aggregation of the CSI-RS configuration does not transmit the CSI-RS, and all the REs of the CSI-RS configuration corresponding to the second set of the two sets transmit the CSI-RS, where M is greater than 1. Integer.
  • the first set has a code division multiplexing length of 2
  • the second set has a code division multiplexing length of 4.
  • M is 20 or 28.
  • the configuration information of the CSI-RS resource further includes: pilot density indication information of the CSI-RS configuration.
  • a device for transmitting pilot configuration information is provided, which is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 8 is a block diagram showing the structure of a transmission apparatus for transmitting pilot configuration information, which is located on the base station side. As shown in FIG. 8, the apparatus includes:
  • the generating module 82 is configured to generate signaling for configuring configuration information of the transport channel state measurement pilot resource CSI-RS resource; the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration Serial number.
  • the sending module 84 is configured to send the signaling.
  • FIG. 9 is a second structural block diagram of a device for transmitting pilot configuration information according to an embodiment of the present invention.
  • the device is located in a terminal. As shown in FIG. 9, the device includes:
  • the receiving module 92 is configured to receive signaling sent by the base station, where the signaling is signaling that includes configuration information of a transport channel state measurement pilot CSI-RS resource resource;
  • the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration sequence number.
  • the parsing module 94 is configured to parse the configuration information.
  • a transmission system for pilot configuration information including: a terminal and a base station;
  • the terminal is configured to receive signaling sent by the base station, where the signaling is signaling that includes configuration information of a transport channel state measurement pilot CSI-RS resource resource;
  • the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration sequence number.
  • the base station transmits signaling including configuration information of a transport channel state measurement pilot resource CSI-RS resource, the configuration information including: number of ports, number of CSI-RS configurations, number of CSI-RS configuration ports, CSI-RS configuration
  • the serial number solves the problem that the CSI-RS transmission in the related technology has a large overhead on the system bandwidth, reduces the problem of the efficiency of the system transmission data, reduces the overhead of the CSI-RS transmission, and improves the efficiency of the system transmission data.
  • the base station first determines configuration information of the CSI-RS resource, generates signaling including configuration information of the CSI-RS resource, and then transmits signaling including configuration information of the CSI-RS resource.
  • bit may be used to indicate the port number information
  • b bit is a CSI-RS configuration number
  • X-bit may be used to indicate the joint coding of the port number information, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration sequence number.
  • the number of ports may be a value in ⁇ 20, 24, 28, 32 ⁇
  • the number of CSI-RS configuration ports may be a value in ⁇ 4, 8 ⁇
  • the number of CSI-RS configurations may be ⁇ 1, 2, The value in 3, 4, 5, 6, 7 ⁇ .
  • the number of ports of the first type of CSI-RS configuration is different from the number of ports of the second type of CSI-RS configuration; or the first type of CSI of the two types
  • the pilot density of the RS configuration is different from the pilot density of the second type of CSI-RS configuration of the two types.
  • the number of ports of the first type of CSI-RS configuration is 4, and the number of ports of the second type of CSI-RS configuration is 8;
  • the number of ports of the first type of CSI-RS configuration 2 is the number of ports of the second type of CSI-RS configuration; for example, the number of ports of the first type of CSI-RS configuration is 2, and the number of ports of the second type of CSI-RS configuration is 8;
  • the pilot density of the first type of CSI-RS configuration is 1RE/PRB/Port
  • the pilot density of the second type of CSI-RS configuration is 0.5RE/PRB/Port
  • the first type The pilot density of the CSI-RS configuration of the type is 1RE/PRB/Port
  • the pilot density of the second type of CSI-RS configuration is 0.25RE/PRB/Port
  • the configuration information of the CSI-RS resource further includes: an aggregation mode indication information, where the candidate aggregation mode has a Q class, and Q is an integer greater than 1:
  • the aggregation mode indication information indicates that one of the candidate aggregation modes is adopted; for example, indicating that the first type of aggregation mode is adopted. Or indicate a second type of aggregation.
  • CSI-RS is aggregated by two types of CSI-RS configurations.
  • the number of ports of the first type of CSI-RS configuration is 4, and the number of ports of the second type of CSI-RS configuration is 8; for example, the number of ports of the first type of CSI-RS configuration 2 is the number of ports of the second type of CSI-RS configuration; for example, the number of ports of the first type of CSI-RS configuration is 2; the number of ports of the second type of CSI-RS configuration is 8; for example, One type of CSI-RS configuration has a code division multiplexing length of 4, and the second type of CSI-RS configuration has a code division multiplexing length of 8; for example, a code type of the first type of CSI-RS configuration The multiplexing length is 2, and the code division multiplexing length of the second type of CSI-RS configuration is 4; for example, the first type of CSI-RS The configuration is multiplexed with REs on adjacent subcarriers, and the second type of CSI-RS configuration is multiplexed with REs on non-adjacent subcar
  • CSI-RS is aggregated by two types of CSI-RS configurations, and the number of ports of the first type of CSI-RS configuration and the second type of CSI-RS configuration different.
  • the number of ports of the first type of CSI-RS configuration is 4, and the number of ports of the second type of CSI-RS configuration is 8 by two second types of CSI-RS configurations and one A type of CSI-RS configuration is aggregated into CSI-RSs with a port number of 20, and three CSI-RS configurations of the second type are aggregated with one CSI-RS configuration of the first type into CSI-RSs with a port number of 28. .
  • the number of ports of the first type of CSI-RS configuration is 2, and the number of ports of the second type of CSI-RS configuration is 4; for example, the number of ports of the first type of CSI-RS configuration is 2, second.
  • the number of ports of the type of CSI-RS configuration is 8.
  • the CSI-RS is aggregated by two types of CSI-RS configurations, and the code of the first type of CSI-RS configuration and the second type of CSI-RS are configured.
  • the multiplexing method is different.
  • the code division multiplexing length of the first type of CSI-RS configuration is 4, and the code division multiplexing length of the second type of CSI-RS configuration is 8, and the number of 2 ports is 8.
  • the second type of CSI-RS configuration is aggregated with a first type of CSI-RS configuration with a port number of 4 into a CSI-RS with a port number of 20, and a second type of CSI-RS with a number of three ports of 8.
  • the configuration and the first type of CSI-RS configuration with a port number of 4 are aggregated into CSI-RSs with a port number of 28.
  • the first type of CSI-RS configuration is multiplexed with REs on adjacent subcarriers
  • the second type of CSI-RS configuration is multiplexed with REs on non-adjacent subcarriers by two ports.
  • the first type of CSI-RS configuration with a number of 8 and the first type of CSI-RS configuration with a port number of 4 are aggregated into a CSI-RS with a port number of 20, and the first type with 3 ports of 8
  • the CSI-RS configuration is aggregated with a first type of CSI-RS configuration with a port number of 4 into a CSI-RS with a port number of 28.
  • the pilot density of the first type of CSI-RS configuration is 1RE/PRB/Port
  • the pilot density of the second type of CSI-RS configuration is 0.5RE/PRB/Port
  • the pilot density of the first type of CSI-RS configuration is 1RE/PRB/Port
  • the pilot density of the second type of CSI-RS configuration is 0.25RE/PRB/Port;
  • CSI-RS is aggregated by two types of CSI-RS configurations, and the first type of code division multiplexing has a length of 4, and the second type of code division multiplexing Length 8
  • the code division multiplexing length of the first type of CSI-RS configuration is 4, and the code division multiplexing length of the second type of CSI-RS configuration is 8, and the number of 2 ports is 8.
  • the second type of CSI-RS configuration is aggregated with a first type of CSI-RS configuration with a port number of 4 into a CSI-RS with a port number of 20, and a second type of CSI-RS with a number of three ports of 8.
  • the configuration and the first type of CSI-RS configuration with a port number of 4 are aggregated into CSI-RSs with a port number of 28.
  • the RE of the last 4 ports in the CSI-RS configuration with the largest aggregation number does not transmit the CSI-RS, such as a CSI-RS with a number of CSI-RS configuration aggregation ports of 8 ports of 8 ports.
  • the four REs of the last four ports of the CSI-RS configuration with the highest sequence number do not transmit CSI-RS; for example, the base station indicates that the REs of the four ports do not transmit CSI-RS, such as CSI with a number of four ports of 8.
  • the RS configuration has a CSI-RS with a number of aggregation ports of 28. The base station indicates that the RE corresponding to the first four ports of the last CSI-RS configuration does not transmit the CSI-RS.
  • the number of ports of the CSI-RS is divided into two sets, the CSI-RS corresponding to the first set adopts the first type of aggregation mode, and the CSI-RS corresponding to the second set adopts the second type of aggregation.
  • the first type of aggregation is different from the second type of aggregation.
  • the number of ports is an integer multiple of 8, ⁇ 16, 24, 32 ⁇ , using CSI-RS configuration aggregation with a port number of 8; the number of ports is a non-integer multiple of 8, ⁇ 12, 20, 28 ⁇ A CSI-RS configuration with a port number of 8 and a CSI-RS configuration with a port number of 4 are used.
  • the number of ports is an integer multiple of 8, ⁇ 24, 32 ⁇ , CSI-RS configuration aggregation with a code division multiplexing length of 8; a non-integer multiple of 8 ports, ⁇ 20, 28 ⁇ , using code division A CSI-RS configuration of length 8 is used to aggregate with a CSI-RS configuration with a code division multiplexing length of 4.
  • the number of ports is an integer multiple of 8, ⁇ 16, 24, 32 ⁇ , using a CSI-RS configuration with a port number of 8. Aggregation, all the REs transmitted by the CSI-RS; the number of ports is a non-integer multiple of 8, ⁇ 20, 28 ⁇ , and the CSI-RS configuration of the port number is 8, and some REs in the aggregation do not transmit CSI-RS.
  • a set of ports having a number of ports less than or equal to 16 ⁇ 1, 2, 4, 8, 12, 16 ⁇ adopts a set of port pilot densities of 1RE/PRB/Port; a number of ports greater than 16 ⁇ 20, 24, 28 32 ⁇ , using two types of port pilot densities, respectively 1RE/PRB/Port and 0.5RE/PRB/Port.
  • the number of ports participating in an aggregated CSI-RS configuration is only one.
  • the number of ports participating in an aggregated CSI-RS configuration is multiple.
  • the number of ports is an integer multiple of 8, ⁇ 16, 24, 32 ⁇ , using CSI-RS configuration aggregation with a port number of 8; the number of ports is a non-integer multiple of 8, ⁇ 12, 20, 28 ⁇ A CSI-RS configuration with a port number of 8 and a CSI-RS configuration with a port number of 4 are used.
  • the CSI-RS corresponding to the port number set ⁇ 12, 16, 24, 32 ⁇ adopts the first type of aggregation mode, and the CSI-RS with the port number of 12 uses the CSI-RS configuration aggregation with the port number of 4.
  • a CSI-RS of ⁇ 16, 24, 32 ⁇ a CSI-RS configuration with a port number of 8 is used;
  • the CSI-RS corresponding to the port number set ⁇ 20, 28 ⁇ adopts a second type of aggregation, and the number of ports is ⁇
  • the CSI-RS of 20, 28 ⁇ adopts a CSI-RS configuration with a port number of 8 and a CSI-RS configuration with a port number of 4.
  • the CSI-RS corresponding to the port number set ⁇ 16, 24, 32 ⁇ adopts the first type of aggregation mode
  • the CSI-RS with the port number of ⁇ 16, 24, 32 ⁇ adopts the CSI-RS configuration with the port number of 8.
  • Aggregation; the number of ports is ⁇ 12, 20, 28 ⁇ .
  • the corresponding CSI-RS adopts the second type of aggregation.
  • the number of ports with the number of ports is ⁇ 12, 20, 28 ⁇ .
  • the number of ports is 8 for the number of ports.
  • the CSI-RS configuration is aggregated with a CSI-RS configuration with a port number of 4.
  • the number of ports is an integer multiple of 8, ⁇ 24, 32 ⁇ , CSI-RS configuration aggregation with a code division multiplexing length of 8; the number of ports is a non-integer multiple of 8, ⁇ 20, 28 ⁇ , A CSI-RS configuration with a code division multiplexing length of 8 and a CSI-RS configuration with a code division multiplexing length of 4 are used.
  • the CSI-RS configuration of the first type of code division multiplexing mode is multiplexed with REs on adjacent subcarriers, and the CSI-RS configuration of the second type of code division multiplexing mode is performed on non-adjacent subcarriers.
  • the CSI-RS configuration corresponding to the port number set ⁇ 12, 16, 24, 32 ⁇ adopts a type code division multiplexing method. That is, the CSI-RS configuration corresponding to the port number of 12 adopts the second type code division multiplexing mode, and the CSI-RS configuration corresponding to ⁇ 16, 24, 32 ⁇ adopts the first type code division multiplexing mode.
  • the CSI-RS configuration corresponding to the port number set ⁇ 20, 28 ⁇ adopts the first type of code division multiplexing mode and the second type of code division multiplexing mode;
  • the pilot density of the CSI-RS configuration participating in the same aggregation is only one type; in the second type of aggregation mode, the pilots participating in an aggregated CSI-RS configuration are used. There are many kinds of densities.
  • a set of ports having a number of ports less than or equal to 16 ⁇ 1, 2, 4, 8, 12, 16 ⁇ adopts a set of port pilot densities of 1RE/PRB/Port; a number of ports greater than 16 ⁇ 20, 24 , 28, 32 ⁇ , using two types of port pilot density, respectively, 1RE / PRB / Port and 0.5RE / PRB / Port.
  • the REs of the CSI-RS configuration are transmitted by the CSI-RS; in the second type of aggregation mode, some of the REs in the CSI-RS configuration are not transmitted by the CSI- RS.
  • the CSI-RS corresponding to the port number set ⁇ 12, 16, 24, 32 ⁇ adopts the first type of aggregation mode
  • the CSI-RS corresponding to the port number set ⁇ 20, 28 ⁇ adopts the second type of aggregation. the way;
  • the CSI-RS corresponding to the port number set ⁇ , 16, 24, 32 ⁇ adopts the first type of aggregation mode
  • the CSI-RS corresponding to the port number set ⁇ 12, 20, 28 ⁇ adopts the second type of aggregation mode
  • a part of the REs in the aggregation of the CSI-RS configuration does not transmit a CSI-RS, where M is an integer greater than 1.
  • the number of ports is a non-integer multiple of 8, for example, M is 20 or M is 28, and CSI-RS configuration aggregation with a port number of 8 is used, and some REs in the aggregation do not transmit CSI-RS.
  • the code division multiplexing mode is divided into two sets, and some REs in the aggregation of the corresponding CSI-RS configuration in the first set do not transmit CSI-RS. All REs of the aggregate of the CSI-RS configuration corresponding to the second set transmit CSI-RS, where M is an integer greater than one.
  • M is 20, or 28; the first set is a set of code division multiplexing length 2, the second set is a set of code division multiplexing length 4; or the first set is The REs on adjacent subcarriers are multiplexed, and the second set is multiplexed on REs on non-adjacent subcarriers.
  • the configuration information of the CSI-RS resource further includes: pilot density indication information of the CSI-RS configuration.
  • indicating the pilot density of each CSI-RS configuration For example, indicating the pilot density of each group of CSI-RS configurations, where each group of CSI-RS configurations may have one or more CSI- RS configuration; for another example, indicating the pilot density of all CSI-RS configurations.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of various embodiments of the present invention.
  • Embodiments of the present invention also provide a storage medium.
  • the storage medium may be configured to store program code for performing the method steps of the above embodiment:
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • the processor performs the method steps of the foregoing embodiments according to the stored program code in the storage medium.
  • 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. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the foregoing technical solution provided by the embodiment of the present invention may be applied to a process of transmitting pilot configuration information, and the base station sends a packet.
  • the signaling of the configuration information of the transmission channel state measurement pilot resource CSI-RS resource, the configuration information includes: the number of ports, the number of CSI-RS configurations, the number of CSI-RS configuration ports, and the CSI-RS configuration sequence number, which are related to the related art.
  • the overhead of CSI-RS transmission on the system bandwidth is large, which reduces the problem of system data transmission efficiency, reduces the overhead of CSI-RS transmission, and improves the efficiency of system transmission data.

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Abstract

La présente invention concerne un procédé et un dispositif destinés à transmettre des informations de configuration pilote, et un système. Le procédé comprend : une station de base qui envoie une signalisation comprenant les informations de configuration destinées à transmettre une ressource de signal de référence d'informations d'état de canal (CSI-RS), les informations de configuration comprenant : le nombre de ports, le nombre de configurations CSI-RS, le nombre de ports de configurations CSI-RS, et les numéros de série des configurations CSI-RS. La présente invention résout le problème dans l'état de la technique de l'efficacité de transmission de données réduites d'un système occasionnée par un grand sur-débit destiné à la transmission CSI-RS sur la bande passante de système ; le sur-débit destiné à la transmission CSI-RS est réduit, tel que l'efficacité de la transmission de données du système est améliorée.
PCT/CN2017/078323 2016-04-01 2017-03-27 Procédé et dispositif destinés à transmettre des informations de configuration pilote, et système WO2017167158A1 (fr)

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CN108400851B (zh) * 2017-02-04 2022-08-19 中兴通讯股份有限公司 配置信息处理方法及装置、基站、终端
EP4068660A4 (fr) * 2019-12-31 2022-11-30 Huawei Technologies Co., Ltd. Procédé de rétroaction d'informations de canal et appareil de communication
WO2024077420A1 (fr) * 2022-10-09 2024-04-18 Lenovo (Beijing) Limited Cadriciel d'informations d'état de canal dans un système duplex intégral

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