WO2018127093A1 - 跨小区传输块映射的方法、接入网设备和用户设备 - Google Patents

跨小区传输块映射的方法、接入网设备和用户设备 Download PDF

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Publication number
WO2018127093A1
WO2018127093A1 PCT/CN2018/071367 CN2018071367W WO2018127093A1 WO 2018127093 A1 WO2018127093 A1 WO 2018127093A1 CN 2018071367 W CN2018071367 W CN 2018071367W WO 2018127093 A1 WO2018127093 A1 WO 2018127093A1
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Prior art keywords
cell
transport block
cross
mac
block mapping
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PCT/CN2018/071367
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English (en)
French (fr)
Inventor
刘星
黄曲芳
酉春华
曾清海
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华为技术有限公司
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Publication of WO2018127093A1 publication Critical patent/WO2018127093A1/zh

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    • 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
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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 method for transmitting block mapping across a cell, an access network device, and a user equipment.
  • the Media Access Control (MAC) layer is used for each carrier or TTI for different carriers or transmission resources on different Transmission Time Intervals (TTIs).
  • the transmission resource on the top generates a Media Access Control Protocol Data Unit (MAC PDU), or is called a transport block.
  • MAC PDU Media Access Control Protocol Data Unit
  • Perform physical layer operations such as check addition, channel coding, modulation, and resource block mapping for each MAC PDU or transport block, and finally map to a carrier for data transmission.
  • the transport block 1 and the transport block 2 respectively perform operations of physical layer such as check addition, channel coding, modulation, and resource block mapping, and finally map to carrier 1 and carrier 2 for data transmission.
  • a new cross-cell transport block mapping method is proposed.
  • the MAC PDU or transport block generated by the MAC layer is divided into multiple sub-blocks and mapped to multiple carriers or TTI transmission resources for transmission, as shown in Figure 2. It is shown that the transport block is subjected to operations such as check code addition, channel coding, modulation, resource block mapping, etc. of the physical layer, and is divided into two blocks, which are respectively mapped to carrier 1 and carrier 2 for data transmission, but the existing mechanism also There is no mapping mechanism for cross-cell transport block mapping.
  • An embodiment of the present invention provides a method for transmitting a block mapping across a cell, an access network device, and a user equipment, and configuring, by using an access network device, a cell that is mapped by a cross-cell transport block by using high layer control signaling and/or physical layer control signaling.
  • the block mapping sequence and the Hybrid Automatic Repeat Request (HARQ) entity location implement data transmission across the cell transport block.
  • HARQ Hybrid Automatic Repeat Request
  • an embodiment of the present invention provides a method for transporting a block mapping across a cell, where the method includes:
  • the access network device passes high-layer control signaling (such as Radio Resource Control (RRC) message, media access control (MAC) layer control element (CE)) or physical layer control signaling (such as physical downlink).
  • RRC Radio Resource Control
  • MAC media access control
  • CE layer control element
  • PDCCH Physical Downlink Control Channel
  • the indication information is used to indicate the cell to which the cross-cell transport block mapping is applied and the block mapping order on the cell to which the cross-cell transport block mapping is applied.
  • the cross-cell transport block mapping method provided by the embodiment of the present invention supports a cell application cross-cell transport block mapping by using a high layer control signaling or a physical layer control signaling configuration, and a block mapping sequence of a cell indicating a cell application cross-cell transport block mapping.
  • the data transmission of the cross-cell transport block is realized.
  • the indication information may include at least one cell index list, each cell index list includes at least one first cell index number; and the cell index list is used to indicate that The cross-cell transport block mapping is applied to the cell corresponding to the at least one first cell index number.
  • the indication information is used to indicate that the cross-cell transport block mapping is applied on the cells in all active states.
  • the first configuration information further includes a threshold parameter
  • cross-cell transport block mapping is applied on the partially activated cells of all activated cells.
  • the indication information includes a packet index number
  • the packet index number indicates a packet to which the cell corresponding to the scheduling resource belongs
  • the packet includes at least one cell.
  • a packet index number is used to indicate that the cross-cell transport block mapping is applied to at least one cell included in the packet.
  • the indication information is used to indicate that the cross-cell transport block mapping is applied on the cell corresponding to the scheduling resource.
  • the physical layer control signaling configuration supports the cell that applies the cross-cell transport block mapping, and the data transmission supporting the cross-cell transport block is implemented.
  • the indication information may be at least one mapping order list for indicating a blocking mapping order on the cell to which the cross-cell transport block mapping is applied.
  • the indication information may include a first partition number, and is used to indicate that the scheduling resource corresponds to The block mapping order of the blocks transmitted on the scheduling resource when the cell applies the cross-cell transport block mapping.
  • the indication information may further include a total number of blocks or indication information of the last block, for avoiding a situation in which one or more blocks are lost.
  • the method may further include:
  • the access network device sends the second configuration information to the user equipment, where the second configuration information includes hybrid automatic repeat request (HARQ entity information), and is used to indicate that the hybrid automatic repeat request HARQ entity that applies the cross-cell transport block mapping for data transmission is used; or a hybrid automatic repeat request HARQ entity to which data transmission is transmitted across a cell transport block map, and a hybrid automatic repeat request HARQ process used for data retransmission; or a hybrid automatic retransmission used to indicate data retransmission Request the HARQ process.
  • HARQ entity information hybrid automatic repeat request
  • the method may further include:
  • the access network device sends third configuration information to the user equipment, where the third configuration information includes a second block number or a second cell index number, and the second block number or the second cell index number is used to indicate the hybrid automatic repeat request HARQ. Feedback location information.
  • the third configuration information further includes punctured transmission information, configured to indicate that the transmission of the cross-cell transport block mapping is applied When the punching transmission is performed on the block, the hole is punched in the transport block so that the user equipment determines the way of punching when the punching transmission is performed.
  • the manner of puncturing the transport block comprises: puncturing the entire transport block; or transmitting the block Punch holes in the block.
  • the punctured transmission information includes at least one third partition number or at least one third cell index number, And means for indicating that a hole is punched in the block corresponding to the at least one third block number or the at least one third cell index number.
  • an embodiment of the present invention provides a method for transporting a block mapping across a cell, where the method may include:
  • the user equipment determines, according to the indication information, a cell mapping sequence applied by the cell that applies the cross-cell transport block mapping and the cell that applies the cross-cell transport block mapping.
  • the uplink data is divided and transmitted according to the cross-cell transport block mapping on the cell and the block mapping sequence on the cell; if the user equipment receives the downlink data, the cross-application is applied according to the cross-cell.
  • the downlink transport data is unpacked by the cell transport block mapping and the block mapping sequence on the cell.
  • the cross-cell transport block mapping method provided by the embodiment of the present invention implements block-based data transmission across cells.
  • the indication information includes at least one cell index list, each cell index list includes at least one first cell index number, and the user equipment determines the application cross according to the indication information.
  • the cell transported by the cell transport block includes:
  • the user equipment determines, according to the indication information, that the cross-cell transport block mapping is applied on the cell corresponding to the at least one first cell index number.
  • the determining, by the user equipment, the cell that applies the cross-cell transport block mapping according to the indication information includes:
  • the user equipment determines to apply the cross-cell transport block mapping on the activated cell according to the indication information.
  • the first configuration information further includes a threshold parameter, where the method includes:
  • the user equipment determines, according to the indication information and the threshold parameter, a cell to which the cross-cell transport block mapping is applied.
  • the user equipment applies cross-cell transport block mapping on all activated cells
  • the user equipment applies cross-cell transport block mapping on the partially activated cells in all activated cells.
  • mapping relationship between the application and the cross-cell transport block data transmission is supported by the high-level control signaling configuration.
  • the indication information includes a packet index number, the packet index number indicates a packet to which the cell corresponding to the scheduling resource belongs, the packet includes at least one cell, and the user equipment according to the indication The information determines the cell to which the cross-cell transport block mapping is applied, including:
  • the user equipment determines to apply a cross-cell transport block mapping in at least one cell included in the packet according to the packet index number.
  • the determining, by the user equipment, the cell that applies the cross-cell transport block mapping according to the indication information includes:
  • the user equipment determines, according to the indication information, that the cross-cell transport block mapping is applied on the cell corresponding to the scheduling resource.
  • the physical layer control signaling configuration supports the cell that applies the cross-cell transport block mapping, and the data transmission supporting the cross-cell transport block is implemented.
  • the indication information is at least one mapping order list for indicating a blocking mapping order on the cell to which the cross-cell transport block mapping is applied.
  • the indication information includes a first partition number
  • the user equipment determines, according to the indication information, that the cross is applied
  • the block mapping order on the cell mapped by the cell transport block includes:
  • the user equipment determines, according to the first block number, a block mapping sequence of the blocks transmitted on the scheduling resource when the cell corresponding to the scheduling resource applies the cross-cell transport block mapping.
  • the indication information may further include a total number of blocks or indication information of the last block, for avoiding a situation in which one or more blocks are lost.
  • the method may further include:
  • the user equipment receives the second configuration information sent by the access network device, where the second configuration information includes the hybrid automatic repeat request HARQ entity information.
  • the hybrid automatic repeat request (HARQ entity) to which the cross-cell transport block mapping is applied for data transmission according to the second configuration information; or indicating the hybrid automatic repeat request HARQ entity to which the cross-cell transport block mapping is applied for data transmission, and The hybrid automatic repeat request HARQ process used for data retransmission; or the hybrid automatic repeat request HARQ process used for data retransmission.
  • the method further includes:
  • the user equipment receives the third configuration information sent by the access network device, where the third configuration information includes a second block number or a second cell index number.
  • the user equipment determines location information of the hybrid automatic repeat request HARQ feedback according to the third configuration information.
  • the third configuration information further includes the punctured transmission information
  • the method includes:
  • the user equipment determines, according to the punctured transmission information, a manner of puncturing the transport block when performing puncturing transmission on the transport block mapped across the cell transport block map, so that the user equipment determines the manner of puncturing when the puncturing transmission is performed.
  • the manner of puncturing the transport block includes: punching holes in the entire transport block; or in the transport block Punch holes in the block.
  • the punctured transmission information includes at least one third partition number or at least one third cell index number
  • the user equipment punches holes in the fast transfer block, including:
  • the user equipment determines to perform puncturing on the block corresponding to the at least one third block number or the at least one third cell index number according to the at least one third block number or the at least one third cell index number.
  • an embodiment of the present invention provides an access network device, where the access network device may include a sending unit.
  • a sending unit configured to send first configuration information to the user equipment by using a high layer control signaling (such as RRC, MAC CE) or physical layer control signaling (such as a PDCCH), where the first configuration information includes indication information;
  • a high layer control signaling such as RRC, MAC CE
  • PDCCH physical layer control signaling
  • the indication information is used to indicate the cell mapping of the cell to which the cross-cell transport block mapping is applied and the block mapping order on the cell to which the cross-cell transport block mapping is applied.
  • the access network device mapped by the cross-cell transport block supports the cell application cross-cell transport block mapping by using the high layer control signaling or the physical layer control signaling, and indicates the cell to which the cell applies the cross-cell transport block mapping.
  • the block mapping sequence implements data transmission across the cell transport block.
  • the indication information includes at least one cell index list, each cell index list includes at least one first cell index number, and the cell index list is used to indicate at least A cross-cell transport block mapping is applied to a cell corresponding to a first cell index number.
  • the indication information is used to indicate that the cross-cell transport block mapping is applied on the cells in all active states.
  • the first configuration information further includes a threshold parameter
  • cross-cell transport block mapping is applied on the partially activated cells in all activated cells.
  • the indication information includes a packet index number
  • the packet index number indicates a packet to which the cell corresponding to the scheduling resource belongs
  • the packet includes at least one cell.
  • a packet index number is used to indicate that the cross-cell transport block mapping is applied to at least one cell included in the packet.
  • the indication information is used to indicate that the cross-cell transport block mapping is applied on the cell corresponding to the scheduling resource.
  • the physical layer control signaling configuration supports the cell that applies the cross-cell transport block mapping, and the data transmission supporting the cross-cell transport block is implemented.
  • the indication information is at least one mapping order list for indicating a blocking mapping order on the cell to which the cross-cell transport block mapping is applied.
  • the indication information includes a first partition number, and is used to indicate a cell application corresponding to the scheduling resource.
  • the indication information may further include a total number of blocks or indication information of the last block, for avoiding a situation in which one or more blocks are lost.
  • the sending unit is further configured to: Transmitting, to the user equipment, second configuration information, where the second configuration information includes hybrid automatic repeat request (HARQ entity information), indicating that a hybrid automatic repeat request HARQ entity to which data transmission is performed by using a cross-cell transport block mapping is applied, or indicating that the application is applied a hybrid automatic repeat request HARQ entity for data transmission across a cell transport block map, and a hybrid automatic repeat request HARQ process for performing data retransmission; or a hybrid automatic repeat request HARQ process for indicating data retransmission .
  • HARQ entity information hybrid automatic repeat request
  • the sending unit is further configured to send, to the user equipment, third configuration information, where the third configuration information includes the second The number or the second cell index number, the second block number or the second cell index number is used to indicate location information of the hybrid automatic repeat request HARQ feedback.
  • the third configuration information further includes punctured transmission information, configured to indicate that the transmission of the cross-cell transport block mapping is applied When the punching transmission is performed on the block, the hole is punched in the transport block so that the user equipment determines the way of punching when the punching transmission is performed.
  • the manner of puncturing the transport block includes: punching the entire transport block; or transmitting the block Punch holes in the block.
  • the punctured transmission information includes at least one third partition number or at least one third cell index number, And means for indicating that a hole is punched in the block corresponding to the at least one third block number or the at least one third cell index number.
  • an embodiment of the present invention provides a user equipment, where the user equipment includes:
  • a receiving unit configured to receive first configuration information sent by the access network, where the first configuration information includes indication information
  • a processing unit configured to determine, according to the indication information, a cell mapping sequence that applies a cross-cell transport block mapping and a cell mapping sequence on a cell to which the cross-cell transport block mapping is applied.
  • the user equipment provided by the embodiment of the present invention determines the cross-cell transport block mapping and the order of the partitioning according to the configuration information sent by the access network device, and implements block-based data transmission across the cell.
  • the indication information includes at least one cell index list, each cell index list includes at least one first cell index number, and the processing unit determines, according to the indication information, the application cross
  • the cell transported by the cell transport block includes:
  • the processing unit determines, according to the indication information, that the cross-cell transport block mapping is applied on the cell corresponding to the at least one first cell index number.
  • the processing unit determines, according to the indication information, the cell that applies the cross-cell transport block mapping, including:
  • the processing unit determines to apply the cross-cell transport block mapping on the cells of all active states according to the indication information.
  • the first configuration information further includes a threshold parameter
  • the processing unit determines, based on the indication information and the threshold parameter, a cell to which the cross-cell transport block mapping is applied.
  • the processing unit determines, according to the indication information and the threshold parameter, the cell to which the cross-cell transport block mapping is applied, including:
  • the user equipment applies cross-cell transport block mapping on all activated cells
  • the user equipment applies cross-cell transport block mapping on the partially activated cells in all activated cells.
  • mapping relationship between the application and the cross-cell transport block data transmission is supported by the high-level control signaling configuration.
  • the indication information includes a packet index number, the packet index number indicates a packet to which the cell corresponding to the scheduling resource belongs, the packet includes at least one cell, and the processing unit according to the indication The information determines the cell to which the cross-cell transport block mapping is applied, including:
  • the processing unit determines to apply the cross-cell transport block mapping in the at least one cell included in the packet according to the packet index number.
  • the processing unit determines, according to the indication information, the cell to which the cross-cell transport block mapping is applied, including:
  • the processing unit determines, according to the indication information, that the cross-cell transport block mapping is applied on the cell corresponding to the scheduling resource.
  • the physical layer control signaling configuration supports the cell that applies the cross-cell transport block mapping, and the data transmission supporting the cross-cell transport block is implemented.
  • the indication information is at least one mapping order list.
  • the user equipment determines a block mapping order of the cells to which the cross-cell transport block mapping is applied according to the at least one mapping order list.
  • the indication information includes the first partition
  • the processing unit determines, according to the indication information, a block mapping sequence on the cell to which the cross-cell transport block mapping is applied, including:
  • the processing unit determines, according to the first block number, a block mapping sequence of the blocks transmitted on the scheduling resource when the cell corresponding to the scheduling resource applies the cross-cell transport block mapping.
  • the indication information may further include a total number of blocks or indication information of the last block, for avoiding a situation in which one or more blocks are lost.
  • the receiving unit is further configured to: Receiving second configuration information sent by the access network device, where the second configuration information includes hybrid automatic repeat request HARQ entity information;
  • the processing unit is further configured to determine, according to the second configuration information, a hybrid automatic repeat request (HARQ entity) to which data transmission is performed by using a cross-cell transport block mapping, or a hybrid automatic repeat request that applies a cross-cell transport block mapping for data transmission.
  • HARQ entity hybrid automatic repeat request
  • the receiving unit is further configured to receive third configuration information that is sent by the access network device, where the third configuration information includes a binary block number or a second cell index number;
  • the processing unit is further configured to determine location information of the hybrid automatic repeat request HARQ feedback according to the third configuration information.
  • the third configuration information further includes the punctured transmission information
  • the processing unit determines, according to the punctured transmission information, a manner of puncturing the transport block when performing puncturing transmission on the transport block mapped across the cell transport block map, so that the user equipment determines the manner of puncturing when performing the puncturing transmission.
  • the manner of puncturing the transport block includes: punching holes in the entire transport block; or in the transport block Punch holes in the block.
  • the punctured transmission information includes at least one third partition number or at least one third cell index number
  • the processing unit punches holes in the fast transfer block, including:
  • the processing unit determines to punch holes on the block corresponding to the at least one third block number or the at least one third cell index number according to the at least one third block number or the at least one third cell index number.
  • an embodiment of the present invention provides a transport block, where the transport block may include at least one medium access control layer control unit MAC CE, and at least one medium access control service data unit MAC SDU belonging to at least one logical channel.
  • At least one MAC SDU belonging to the same logical channel is sequentially arranged; the first MAC SDU of the at least one MAC SDU belonging to the first logical channel of the at least one logical channel is adjacent to the last MAC CE in the transport block, the first logic The last MAC SDU of the at least one MAC SDU in the channel is adjacent to the MAC subhead of the corresponding first logical channel; the MAC subheader of the first logical channel and at least one of the second logical channels belonging to the at least one logical channel The first MAC SDU in the MAC SDU is adjacent; or,
  • At least one MAC SDU belonging to the same logical channel is sequentially arranged; the first MAC SDU of the at least one MAC SDU belonging to the first logical channel of the at least one logical channel is adjacent to the last MAC CE in the transport block, the first logic The last MAC SDU of the at least one MAC SDU in the channel is adjacent to the first MAC SDU of the at least one MAC SDU belonging to the second logical channel of the at least one logical channel, belonging to the last logic of the at least one logical channel The last one of the at least one MAC SDU of the channel is adjacent to the MAC subhead of the first logical channel of the at least one logical channel that is sequentially sorted;
  • the MAC subheader of the last logical channel in the transport block is adjacent to the padding bit, and the padding bit is adjacent to the MAC subheader of the padding bit.
  • the MAC sub-head of each logical channel includes a first logical channel identifier and each MAC SDU of the at least one MAC SDU belonging to the corresponding first logical channel Length, a first indicator bit, a second indicator bit; the first indicator bit is used to indicate whether the MAC SDU of the channel to which it belongs is the last MAC SDU; the second indicator bit is used to indicate whether it is the last logical channel of the transport block .
  • the MAC subheader of the third logical channel includes each of the at least one MAC SDU belonging to the third logical channel
  • the length of the MAC SDU and the fourth indication bit; the fourth indication bit is used to indicate whether the MAC SDU of the belonging channel is the last MAC SDU.
  • the transport block may further include At least one MAC CE corresponding media access control MAC subheader corresponding to the MAC CE.
  • the format of the transport block can be:
  • the MAC sub-headers of the at least one MAC CE are sequentially arranged, and are located at the first end of the transport block, and the MAC sub-headers of the last MAC CE in the MAC sub-headers of the at least one MAC CE are sequentially arranged and the at least one MAC CE in the sequence
  • the first MAC CE is adjacent to the first MAC CE; or the MAC sub-head of the at least one MAC CE and the corresponding MAC CE are located at the first end of the transport block, where each MAC CE in the at least one MAC CE and the corresponding MAC
  • the MAC sub-headers of the CE are adjacent to each other and are located at the first end of the MAC sub-header of the corresponding MAC CE.
  • the MAC sub-head of each MAC CE includes a second logical channel identifier and a third indicator bit, and the third indication The bit is used to indicate whether it is the last MAC CE in the transport block.
  • the MAC subheader of the padding bit includes a length of the third logical channel identifier and the padding bit.
  • the access network device configures the cell that applies the cross-cell transport block mapping by using the high layer control signaling and/or the physical layer control signaling.
  • Data transmission across the cell transport block is implemented by applying the block mapping order of the cross-cell transport block mapping cell and the HARQ entity information.
  • FIG. 1 is a schematic diagram of a transport block mapping in the prior art
  • FIG. 2 is a schematic diagram of a transport block mapping in the prior art
  • FIG. 3 is a schematic diagram of a network system according to an embodiment of the present disclosure.
  • FIG. 4 is a flowchart of a method for mapping a cross-cell transport block according to an embodiment of the present invention
  • FIG. 5 is a flowchart of another method for transmitting block mapping of a block cell according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a format of physical layer control signaling according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of another physical layer control signaling according to an embodiment of the present disclosure.
  • FIG. 8 is a flowchart of another method for mapping a cross-cell transport block according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of another method for mapping a cross-cell transport block according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of a method for transmitting a HARQ feedback position indication of a cross-cell transmission block according to an embodiment of the present invention
  • FIG. 11 is a schematic diagram of a format of a data access control protocol data unit in the prior art
  • FIG. 12(a) is a schematic diagram of a format of a transport block according to an embodiment of the present invention.
  • FIG. 12(b) is a schematic diagram showing another format of a transport block according to an embodiment of the present invention.
  • FIG. 13(a) is a schematic structural diagram of a data unit of a media access control protocol data unit according to an embodiment of the present invention
  • FIG. 13(b) is a schematic diagram of another data structure of a media access control protocol data unit according to an embodiment of the present invention.
  • FIG. 14(a) is a schematic structural diagram of a data unit of a media access control protocol data unit according to an embodiment of the present invention.
  • FIG. 14(b) is a schematic diagram of another data structure of a media access control protocol data unit according to an embodiment of the present invention.
  • 15(a) is a schematic structural diagram of a data unit of a media access control protocol data unit according to an embodiment of the present invention.
  • FIG. 15(b) is a schematic diagram of another data structure of a media access control protocol data unit according to an embodiment of the present invention.
  • FIG. 16 is a schematic diagram of a media access control subheader of a medium access control layer control unit according to an embodiment of the present disclosure
  • FIG. 17 is a schematic diagram of a media access control subheader of a media access control service data unit according to an embodiment of the present disclosure
  • FIG. 18 is a schematic diagram of a media access control subheader of another media access control service data unit according to an embodiment of the present disclosure
  • FIG. 19 is a schematic diagram of a media access control subheader with padding bits according to an embodiment of the present disclosure.
  • FIG. 20 is a schematic structural diagram of an access network device according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • An embodiment of the present invention provides a method for transmitting a block mapping across a cell, an access network device, and a user equipment, where the access network device uses the upper layer control signaling and/or the physical layer control signaling to configure the cross-cell transport block mapping.
  • the cell, the block mapping order, and the HARQ entity information implement data transmission across the cell transport block.
  • the method for trans-cell transport block mapping provided by the embodiment of the present invention can be applied to the network system of FIG.
  • FIG. 3 is a schematic diagram of a network system according to an embodiment of the present invention.
  • the network system may include at least one access network device 110 and at least one user equipment (UE) 120.
  • UE user equipment
  • the access network device 110 may be a radio access network device.
  • the access network device 110 may be a base station, an Evolved Node B (eNB), an access point (AP), or the like.
  • the UE 120 may be a mobile terminal, a device having a network access function, or the like.
  • the cross-cell transport block mapping method provided by the embodiment of the present invention may be used to implement data transmission of the cross-cell transport block.
  • the UE 120 may perform carrier aggregation (CA) or dual connectivity ( Dual connectivity (DC) or Coordinated Multiple Point Transmission (CoMP) works.
  • CA carrier aggregation
  • DC Dual connectivity
  • CoMP Coordinated Multiple Point Transmission
  • At least one cell provides at least one radio interface technology while providing radio resources to the UE 120.
  • the UE 120 sends a radio resource request to the access network device 110.
  • the access network device 110 allocates an uplink transmission resource to the UE after receiving the radio resource request, that is, the access network device 110 completes the uplink scheduling authorization for the UE 120 (Uplink grant).
  • the UE 120 transmits data to the access network device according to the radio resources allocated by the access network device 110.
  • the cross-cell transport block mapping method, the access network device, and the user equipment provided by the embodiments of the present invention are also applicable to a Universal Mobile Telecommunications System (UMTS) system, a Code Division Multiple Access (CDMA) system, and a wireless device.
  • UMTS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access
  • WLAN Wireless Local Area Network
  • 5G the fifth generation wireless communication system, and so on.
  • mapping a cross-cell transport block provided by an embodiment of the present invention is described in detail below with reference to FIG. 4 to FIG.
  • FIG. 4 is a flowchart of a method for trans-cell transport block mapping according to an embodiment of the present invention. As shown in FIG. 4, the method may include the following steps:
  • the access network device sends first configuration information to the user equipment, where the first configuration information includes indication information.
  • the indication information is used to indicate a cell that applies cross-cell transport block mapping and a block mapping order on the cell to which cross-cell transport block mapping is applied.
  • the indication information may be, for example, occupying 1 bit in the first configuration information data, and if the 1 bit is "0", it indicates that the cross-cell transport block mapping is not applied on the cell; If the 1 bit is "1", it means that the cross-cell transport block mapping is applied on the cell.
  • the indication information may further include at least one cell index list, where each cell index list may include at least one cell index number, and each cell index number corresponds to one cell.
  • the at least one cell index list may indicate that cross-cell transport block mapping is applied on a cell corresponding to at least one cell index number included in the at least one cell index list.
  • the indication information may include at least one mapping order list, used to indicate a blocking mapping sequence on the cell to which the cross-cell transport block mapping is applied.
  • the access network device may adopt high-layer control signaling, for example, a radio resource control (RRC) message, a media access control (MAC) layer control unit (CE) message, and the like.
  • the first configuration information is sent to the user equipment, that is, the high-level control signaling is semi-statically configured with the first configuration information; the access network may also carry the downlink control through the physical layer control signaling, for example, the physical downlink control channel (PDCCH)
  • the Downlink Control Information (DCI) sends the first configuration information to the user equipment. If the access network device sends the first configuration information to the user equipment by using the high layer control signaling, the indication information included in the first configuration information may indicate that the cross-cell transport block mapping is applied on all activated cells.
  • the first configuration information may further include a threshold parameter, so that after the user equipment receives the first configuration information, determining, according to the indication information and the threshold parameter in the first configuration information, Cell collection.
  • cross-cell transport block mapping is applied on all activated cells.
  • the cells in the N active state are selected in the cells in the active state, and the cross-cell transport block mapping is applied on the selected N active cells.
  • the cell in the N active state may be pre-configured. For example, when the number of cells in the active state is greater than the threshold parameter N, the inter-cell transport block mapping is applied on the cells of the N active states with the smaller cell index number; or, the cell is configured in the cell. Applying cross-cell transport block mapping on the N active cells with larger index numbers; or configuring N consecutive active state cells starting from a certain cell index number, applying cross-spans on the N consecutive active cells Cell transport block mapping.
  • At least one cell index list may indicate that the cross-cell transport block mapping is applied on the cell corresponding to the cell index, as shown in the list 1 and the list 2.
  • the data of each cell may be mapped on a carrier corresponding to the cell for data transmission. Therefore, the user equipment selects a cell set for cross-cell transport block mapping according to the first configuration information, and may also be referred to as a carrier set.
  • the first configuration information includes two cell index lists, and the list 1 indicates that the cross-cell transport block mapping is applied on the cell corresponding to the cell index 1, the cell index 2, and the cell index 3, and the list 2 indicates that The cross-cell transport block mapping is applied to the cell corresponding to the cell index 4 and the cell index 5.
  • the list 1 and the list 2 may also represent two block mapping order lists, and the list 1 indicates that the block mapping order is the first block mapping to the cell corresponding to the cell index 3, and the second block mapping On the cell corresponding to the cell index 2, the third block is mapped to the cell corresponding to the cell index 1.
  • the list 2 indicates that the block mapping order is that the first block is mapped to the cell corresponding to the cell index 4, and the second block is mapped to the cell corresponding to the cell index 5.
  • the cell index list and the mapping order list may also be the same list, as shown in list 3 and list 4.
  • the specific form of the cell index list and the mapping order list is not limited.
  • the cross-cell transport block mapping method provided by the embodiment of the present invention, after receiving the first configuration information, the UE corresponding to the first cell corresponding to the cell index 3 and the cell index 2
  • the second cell and the third cell corresponding to the cell index 1 receive the downlink data, and are merged in the order indicated by the list 1 to form a complete transport block, and then perform operations such as decoding and verification of the physical layer.
  • the UE For the uplink, after receiving the first configuration information, the UE selects the total size of the uplink scheduling resource corresponding to the first cell corresponding to the cell index 3, the second cell corresponding to the cell index 2, and the third cell corresponding to the cell index 1
  • An uplink transport block is generated, and after performing operations such as encoding and modulation of the physical layer, the partition is divided into three partitions according to the block mapping order, and then transmitted on the uplink scheduling resources of the first, second, and third cells, respectively.
  • An uplink transport block may be implemented by the MAC layer to generate a MAC PDU, or may be generated by the MAC by multiple MAC PDUs, and then implemented by the physical layer.
  • the indication information included in the first configuration information may be used to apply the cross-cell transmission on the cell corresponding to the scheduling resource indicated by the physical layer control signaling. Block mapping.
  • the indication information is used to indicate that the cross-cell transport block mapping is applied on the cell corresponding to the scheduling resource.
  • the indication information may further be a packet index number indicating a packet to which the cell corresponding to the scheduling resource belongs.
  • one packet may include at least one cell.
  • the packet index number is used to indicate that the cross-cell transport block mapping is applied to at least one cell included in the packet.
  • the packet index number may be a cell index.
  • the cell corresponding to this packet index number can become the anchor cell of this packet.
  • An anchor cell may also be referred to as a location of a HARQ entity, or a location of an anchor HARQ entity, ie, a cell in which an anchor HARQ entity is located.
  • the indication information may further be a first fragment sequence number, where the resource is scheduled to be used when the cell corresponding to the scheduling resource indicated by the physical layer control signaling applies the cross-cell transport block mapping.
  • the indication information may further include a total number of partitions, that is, how many partitions are shared to avoid one or more physical layer control signaling loss.
  • the indication information may include indication information of whether it is the last block, since the block number of the last block may indicate how many blocks are shared to avoid loss of one or more physical layer control signaling. .
  • the cell in which the cross-cell transport block mapping is applied in the present invention may use the same air interface format numerology, or may use different air interface formats.
  • the user equipment determines, according to the indication information, a cell that applies the cross-cell transport block mapping, and a block mapping sequence on the cell that applies the cross-cell transport block mapping.
  • the user equipment After receiving the first configuration information sent by the access network device, the user equipment determines, according to the indication information in the first configuration information, the cell that applies the cross-cell transport block mapping and the partition on the applied cross-cell transport block mapped cell. The order of the mapping.
  • the user equipment needs to transmit the uplink data, generate an uplink transport block according to the total size of the uplink scheduling resources of the cell that uses the cross-cell transport block mapping, perform the coding and modulation operations of the physical layer, and apply the cross-cell transport block according to the application.
  • the block mapping order on the mapped cells is performed in blocks, and the blocks of the uplink transport block are respectively sent according to the block mapping order on the uplink resources of each cell.
  • the transport block is not regenerated, and the transport block at the previous transmission is used for data transmission.
  • the downlink data of the block received in the block mapping order on the cell is combined to form a complete transport block, and then perform operations such as decoding and verification of the physical layer.
  • the method for mapping cross-cell transport blocks provided by the embodiments of the present invention implements block-based data transmission across cells.
  • the method may further include:
  • the second configuration information that is sent by the access network device to the user equipment, where the second configuration information may include the HARQ entity information.
  • the HARQ entity information is used to indicate a hybrid automatic repeat request HARQ entity to which data retransmission is applied across a cell transport block mapping, and information such as a process used for data retransmission.
  • the access network device sends the second configuration information to the user equipment, where the second configuration information includes the HARQ entity information.
  • the second configuration information sent by the access network device may be specifically as shown in FIG. 6 and FIG. 7.
  • FIG. 6 is a schematic diagram of a format of physical layer control signaling according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of another physical layer control signaling according to an embodiment of the present invention.
  • Physical layer control signaling may indicate transmission resources on multiple cells.
  • the cross-cell transport block mapping is indicated on the cell (carrier) 1 and the cell 2.
  • the anchor cell is a cell one, and the anchor HARQ entity is located on the cell one, and the HARQ process 3 is used.
  • the HARQ process number on cell 2 is 5, indicating that the HARQ process 5 of the HARQ entity on cell 2 is used. If there is no HARQ process number on cell 2, it means that the HARQ process on cell 2 is not used.
  • Multiple physical layer control signaling may be employed to respectively indicate transmission resources on the corresponding cell.
  • the cross-cell transport block mapping is indicated on cell one and cell two.
  • the anchor cell is a cell one, and the HARQ entity is located on the cell one, and the HARQ process 3 is used.
  • the HARQ process number on cell 2 is 5, indicating that the HARQ process 5 is used. If there is no HARQ process number on cell 2, it means that the HARQ process on cell 2 is not used.
  • the user equipment determines the HARQ entity information according to the second configuration information.
  • the user equipment and the access network device use the transport block mapping method for cross-cell transmission to transmit data, some data packets may fail to be transmitted or need to be retransmitted, and the user equipment needs to determine the location of the HARQ entity where the retransmitted data is located. And the process adopted, so that when the device receives the retransmitted data, the re-received data is merged with the previously received data.
  • a HARQ entity may have multiple HARQ processes, and each transport block occupies one HARQ process, and each HARQ process may be marked by a process number, so that the process ID can be used to determine which transport blocks can be HARQ merged. .
  • each cell uses its own HARQ entity and the process number of its own HARQ process for data transmission.
  • multiple cells transmit the same block of the transport block, and if both cell 1 and cell 2 transmit the block of the downlink transport block 1, the PDCCH indicating the retransmission is indicated.
  • the PDCCH indicating the retransmission is indicated.
  • the data packet is HARQ merged with the originally transmitted HARQ process number 3.
  • the location of the HARQ entity may also be indicated by high layer control signaling.
  • the default block mapping order and the location of the HARQ entity are used. For example, the location of the HARQ entity is located at the first block. The community is waiting.
  • the default block order and the location of the HARQ entity can be customized, which is not limited in the embodiment of the present invention.
  • the first configuration information and the second configuration information that are sent by the access device to the user equipment in the method for the inter-cell transport block mapping provided by the embodiment of the present invention may be included in a layer of high layer control signaling or physical layer control. Signaling.
  • the indication information in the first configuration information may also be sent through two upper layer control signaling or physical layer control signaling.
  • the specific form of the first configuration information and the second configuration information is not limited in the embodiment of the present invention.
  • the access network device sends third configuration information to the user equipment, where the third configuration information may include a second block number or a second cell index number.
  • the second block number or the second cell index number is used to indicate location information of the HARQ feedback.
  • the HARQ feedback location is a specific time-frequency location, a real-time domain location, and a frequency domain location of the ACK/NACK feedback used by the user equipment to determine the hybrid automatic repeat request on the Physical Uplink Control Channel (PUCCH).
  • PUCCH Physical Uplink Control Channel
  • the location of the ACK/NACK feedback is determined according to the location of the PDCCH signaling that is scheduled to correspond to the downlink data packet.
  • the partitions on each cell are separately scheduled by the respective PDCCHs, One of the PDCCHs is selected to determine the location of the ACK/NACK feedback.
  • the user equipment determines location information of the HARQ feedback according to the second block number or the third cell index number.
  • the solution provided by the embodiment of the present invention is convenient for the user equipment to receive the retransmission data according to the determined time-frequency location of the retransmitted data, and receive the retransmission data at the time-frequency location, and combine the determined HARQ entity location to receive the retransmitted data and the initial data.
  • the transmitted data is HARQ merged.
  • the third configuration information may further include punctured transmission information, configured to indicate that when the puncturing transmission is performed on the transport block that applies the cross-cell transport block mapping, The way the hole.
  • the puncturing transmission may be performed on the block of the entire transport block, or the puncturing may be performed on the partial block of the transport block.
  • performing the puncturing transmission on one or more of the blocks of the transport block may use at least one third block number or at least one third cell index number included in the punctured transmission information to indicate at least one third block.
  • the number or the at least one block corresponding to the third cell index number is punctured and punched.
  • the user equipment receives the third configuration information.
  • the user equipment When the user equipment has ACK/NACK and needs to be fed back, and the uplink data needs to be transmitted, and the user equipment does not support the simultaneous transmission of the PUCCH and the PUSCH, the user equipment needs to perform the puncturing transmission, and the content of the PUCCH is embedded in the PUSCH, and the user equipment is
  • the indication of the puncturing transmission information in the third configuration information determines the puncturing manner of the puncturing transmission.
  • the user equipment may determine which blocks are punctured according to the at least one third block number and the at least one third cell index number included in the punctured transmission information, and perform data transmission.
  • the cross-cell transport block mapping method provided by the embodiment of the present invention is configured to apply a cross-cell transport block mapping cell, a block mapping order, a location of a HARQ entity, and a HARQ feedback location by using high layer control signaling or physical control signaling. Transmission of cross-cell transport blocks is achieved.
  • the three configuration information may be included in one layer of high layer control signaling or physical layer control signaling.
  • the indication information used in the first configuration information to indicate the application of the cross-cell transport block mapping and the block mapping sequence in the cell to which the cross-cell transport block mapping is applied may also be controlled by two high layers. Signaling or physical layer control signaling is sent.
  • the specific configuration of the first configuration information, the second configuration information, and the third configuration information is not limited in the embodiment of the present invention.
  • the indication information of the cell for indicating the application cross-cell transport block mapping is respectively sent to the user equipment according to the access network device, the indication information for the block mapping order of the cell to which the cross-cell transport block mapping is applied, and the HARQ entity
  • the information is taken as an example to describe an embodiment of the present invention.
  • FIG. 8 is a flowchart of a method for trans-cell transport block mapping according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of another method for mapping a cross-cell transport block according to an embodiment of the present invention.
  • FIG. 8 is a semi-static configuration indication information, a location information of a HARQ entity, through a high layer control signaling.
  • FIG. 9 is a configuration instruction information and HARQ entity information through physical layer control signaling.
  • the method for trans-cell transport block mapping may include the following steps:
  • the access network device sends the first configuration information to the UE, where the first configuration information may carry the indication information or the at least one cell index list.
  • the indication information is used to indicate that cross-cell transport block mapping is applied on all activated cells.
  • the at least one cell index list is used to indicate that the cross-cell transport block mapping is applied on the cell corresponding to the cell index number included in the cell index list.
  • the first configuration information may further carry the parameter N, and when the number of activated cells is less than N, the cross-cell transport block mapping is applied on all activated cells.
  • N When the number of activated cells is greater than N, it indicates that cross-cell transport block mapping is applied on cells in which N active states are. For example, by using a carrier index (or a cell index), which N active cell applications apply cross-cell transport block mapping, for example, a cell with the smallest (or largest) cell index number of N active states, or starting from an index. N consecutive active cells.
  • a carrier index or a cell index
  • N active cell applications apply cross-cell transport block mapping, for example, a cell with the smallest (or largest) cell index number of N active states, or starting from an index. N consecutive active cells.
  • the UE selects, according to the first configuration information, a carrier set used for cross-cell transport block mapping.
  • the access network device sends the second configuration information to the UE.
  • the second configuration information may carry one, two or more mapping order lists, which are used to indicate the block mapping order on the carrier to which the cross-cell transport block mapping is applied. For details, refer to the description in S210 in FIG. Description, no longer repeat here.
  • the UE determines, according to the second configuration information, a mapping order of the blocks.
  • the access network device first sends, by the UE, third configuration information.
  • the third configuration information may carry a cell index number, which is used to indicate a location of the HARQ entity corresponding to the transport block when the application cross-cell transport block mapping is applied.
  • the UE determines, according to the third configuration information, a location of the HARQ entity.
  • the cross-cell transport block mapping method provided by the embodiment of the present invention implements a cell, a block mapping sequence, and a HARQ entity selection for the cross-cell transport block mapping application of the high-level control signaling semi-static configuration.
  • the method for trans-cell transport block mapping may include the following steps:
  • the access network device sends the first configuration information to the UE, where the first configuration information may carry the indication information or the packet index number.
  • the indication information is used to indicate that the cross-cell transport block mapping is applied on the carrier corresponding to the scheduling resource indicated by the physical layer control signaling.
  • the packet index number is used to indicate a packet to which the cell corresponding to the scheduling resource indicated by the physical layer control signaling belongs, and applies a cross-cell transport block mapping to all carriers in the packet.
  • the packet index number may be a cell index number, and the cell corresponding to the cell index number may be referred to as an anchor cell of the packet, that is, a location where the HARQ entity is located.
  • the UE selects a carrier set for cross-carrier transport block mapping according to the first configuration information.
  • the access network device sends second configuration information to the UE.
  • the second configuration information may carry one, two or more mapping order lists for indicating a blocking mapping order on the cell to which the cross-cell transport block mapping is applied.
  • the second configuration information may carry a block sequence number, where the cell corresponding to the scheduling resource indicated by the physical layer control signaling is used to apply the cross-cell transport block mapping on the scheduling resource.
  • the block mapping order of the transmitted blocks may carry a block sequence number, where the cell corresponding to the scheduling resource indicated by the physical layer control signaling is used to apply the cross-cell transport block mapping on the scheduling resource.
  • the second configuration information may further carry a total number of partitions, which is used to indicate how many partitions are shared, and to avoid loss of one or more physical layer control signaling.
  • the second configuration information may further carry a last block number of the block to indicate whether it is the last block. Since the block number of the last block just indicates how many blocks are shared, one or more physical layer control signaling loss can be avoided.
  • the UE determines, according to the second configuration information, a mapping order of the blocks.
  • the third configuration information may carry a cell index, which is used to indicate a location of the HARQ entity corresponding to the transport block when the application cross-cell transport block mapping is applied.
  • the third configuration information may also carry anchor HARQ process information indicating an anchor HARQ process number used by the transport block.
  • the UE determines the HARQ entity information according to the third configuration information.
  • the cross-carrier transport block mapping method provided by the embodiment of the present invention implements physical layer control signaling dynamic configuration, applies a cross-cell transport block mapping carrier, a block mapping order, and information of a HARQ entity.
  • FIG. 10 is a flowchart of a method for reporting a position indication of a cross-carrier transmission block HARQ according to an embodiment of the present invention. As shown in FIG. 10, the method may include the following steps:
  • the access network device sends configuration information to the user equipment, where the configuration information includes a block number or a cell index number, and the block number or the cell index number is used to indicate location information of the HARQ feedback.
  • the block number may also be referred to as a scheduling block number.
  • the location information of the HARQ feedback is determined according to the location of the physical layer control signaling corresponding to the scheduling block number or the cell index number.
  • the user equipment receives configuration information sent by the access network device, where the configuration information includes a block serial number or a cell index number.
  • the user equipment determines location information of the HARQ feedback according to the block serial number or the cell index number.
  • the default HARQ feedback location is used.
  • the location of the HARQ feedback is determined according to the location of the physical control signaling that schedules the first partition, or the location of the HARQ feedback is determined according to the location of the physical control signaling of the partition on the cell where the scheduling HARQ entity is located.
  • the configuration information may further include punctured transmission information, configured to indicate that the puncturing transmission is performed on the transport block that applies the cross-cell transport block mapping.
  • the method of punching holes on the block may further include:
  • the user equipment determines the manner of puncturing the transport block according to the punctured transmission information.
  • the puncturing transmission information configured by the access network device may indicate that the entire transport block is punctured. Still only punch holes in a certain block. In the embodiment of the present invention, if a hole is punched in a certain block, the block number or the cell index number may be used to indicate which block is punched.
  • the default puncturing method is used, for example, punching the entire transport block, punching holes on the first partition, and the like.
  • the default block may be used, for example, on the first block. hole.
  • the method for detecting the position of the HARQ feedback in the cross-carrier transport block mapping is determined by the method of the cross-carrier transport block HARQ feedback position indication provided by the embodiment of the present invention.
  • the cross-carrier transport block mapping method provided by the embodiment of the present invention configures a carrier for supporting cross-carrier transport block mapping by using high-layer control signaling and physical layer control information to complete data transmission of the cross-carrier transport block.
  • the MAC subheader of the MAC CE and the MAC subheader of the Media Access Control (MAC) Service Data Unit (SDU) in the data structure called the MAC PDU Both are located in front of the corresponding MAC CE or MAC SDU, as shown in FIG.
  • a traditional MAC PDU needs to be placed with a MAC sub-header and then a MAC SDU.
  • the MAC SDU is not fixed in the MAC PDU.
  • the MAC After receiving all MAC SDUs of a logical channel, the MAC determines the MAC according to the number of MAC SDUs.
  • the length of the MAC sub-header of the SDU can determine the location of the MAC SDU, such that when the receiving end receives the data, for example, the user equipment receives the downlink data sent by the access network device, or the access network device receives the uplink data sent by the user equipment.
  • the MAC SDU can be first placed in an additional buffer. After the MAC sub-head of the MAC SDU is determined, the MAC SDU can be written into the buffer of the MAC SDU. The two writes increase the processing delay.
  • the embodiment of the present invention proposes a new MAC PDU format, that is, a MAC PDU data structure, for the problem of the existence of a conventional MAC PDU data structure.
  • the MAC PDU may include a MAC CE, a MAC subheader of a MAC CE corresponding to the MAC CE, a MAC SDU, a MAC subheader of a logical channel corresponding to the MAC SDU, a padding bit, and a MAC subheader of the padding bit.
  • the MAC PDU may include at least one MAC CE, at least one MAC SDU of at least one logical control channel, and a MAC sub-head of at least one logical control channel.
  • the MAC PDU may be referred to as a transport block, or multiple The MAC PDUs form a transport block.
  • the format of the MAC PDU can be:
  • At least one MAC SDU belonging to the same logical channel is sequentially arranged.
  • the first MAC SDU of the at least one MAC SDU belonging to the first logical channel of the at least one logical channel is adjacent to the last MAC CE of the transport block, and the last MAC of the at least one MAC SDU of the first logical channel
  • the SDU is adjacent to the MAC subheader of the corresponding first logical channel; the MAC subheader of the first logical channel is adjacent to the first MAC SDU of the at least one MAC SDU belonging to the second logical channel in the at least one logical channel, For example, as shown in Figure 12(a).
  • At least one MAC SDU belonging to the same logical channel is sequentially arranged.
  • the first MAC SDU of the at least one MAC SDU belonging to the first logical channel of the at least one logical channel is adjacent to the last MAC CE of the transport block, and the last MAC of the at least one MAC SDU of the first logical channel
  • the SDU is adjacent to the first MAC SDU of the at least one MAC SDU belonging to the second logical channel of the at least one logical channel, and belongs to the last MAC SDU of the at least one MAC SDU of the last logical channel of the at least one logical channel Adjacent to the MAC subheader of the first logical channel of the at least one logical channel that is sequentially sorted, for example, as shown in FIG. 12(b).
  • n logical channels are included in the transport block, including m MAC CEs, where m is a positive integer and n is a positive integer.
  • the MAC SDU of the logical channel 1 to which it belongs may include MAC SDU1 and MAC SDU2, and the MAC SDU of the logical channel 2 to which it belongs may include MAC SDU1 and MAC SDU2.
  • the MAC SDU1 and the MAC SDU2 in the associated logical channel 1 in the transport block, and the MAC SDU1 and the MAC SDU2 in the associated logical channel 2 are sequentially arranged.
  • the last MAC SDU in the logical channel 1 adjacent to the MAC SDU2 is adjacent to the MAC sub-header of the logical channel 1 of the logical channel, and the MAC sub-head of the logical channel 1 is associated with the logical channel 2 in the logical channel 2
  • the first MAC SDU in the MAC SDU is adjacent, that is, adjacent to the MAC SDU1 in the logical channel 2 to which it belongs.
  • the first MAC SDU in the logical channel 1 to which it belongs is adjacent to the last MAC CEn in the transport block.
  • the MAC subheader of the last logical channel n in the transport block is adjacent to the padding (Padding).
  • the last MAC SDU of at least one MAC SDU of the logical channel adjacent to the MAC sub-header of the associated channel, the MAC sub-header of the logical channel and the first MAC in the MAC SDU of the other logical channel SDU is adjacent.
  • the MAC SDUs included in the n logical channels are sequentially arranged. After the MAC SDU1 and the MAC SDU2 of the logical channel 1 are aligned, the last MAC SDU of the logical channel 1 and the MAC SDU2 are adjacent to the first MAC SDU of the MAC SDU of the logical channel 2, that is, the MAC SDU1. After completing the MAC SDUs included in the n logical channels, the MAC subheaders of the n logical channels are arranged, that is, the last MAC SDU of the last logical channel of the n logical channels in the transport block is associated with the logical channel 1 in the transport block. Neighbor; the MAC subheader of the last logical channel in the transport block, that is, the MAC subheader of logical channel n is adjacent to the padding bit (Padding).
  • the MAC subheader of the last logical channel in the transport block is adjacent to the padding bit, and the padding bit is adjacent to the MAC subheader of the padding bit.
  • the MAC PDU may further include a MAC sub-header of at least one MAC CE.
  • the format of the transport block can be:
  • the MAC sub-headers of the at least one MAC CE are sequentially arranged, and are located at the first end of the transport block, and the MAC sub-headers of the last MAC CE in the MAC sub-headers of the at least one MAC CE are sequentially arranged and the at least one MAC CE in the sequence
  • the first MAC CE is adjacent to the first MAC CE; or the MAC sub-head of the at least one MAC CE and the corresponding MAC CE are located at the first end of the transport block, where each MAC CE in the at least one MAC CE and the corresponding MAC
  • the MAC sub-headers of the CE are adjacent to each other and are located at the first end of the MAC sub-header of the corresponding MAC CE.
  • MAC SDU1 and MAC SDU2 belong to the same logical channel 1.
  • the MAC layer control unit MAC CE and the corresponding MAC subheader are placed at the forefront of the MAC PDU, and the MAC subheader corresponding to each MAC CE is located in front of the MAC CE, as shown in FIG. 13(a); or, all The MAC sub-headers of the MAC CE are located at the forefront of all MAC CEs in the order in which the MAC CEs are arranged, as shown in Figure 13(b).
  • the first MAC SDU is placed next to the last MAC CE, located on the right side of the last MAC CE.
  • the MAC subhead corresponding to the logical channel is followed by the last logic.
  • the MAC SDU of the channel is placed on the right side of the MAC SDU. If there are other MAC SDUs of the logical channel, they are placed in the order of the rules arranged in order, first all the MAC SDUs of the logical channel are placed, and then the MAC of the corresponding logical channel is placed. Child head. Finally, if there is padding padding, the padding bit is first placed, and finally the MAC subheader corresponding to the padding bit is placed.
  • FIG. 14(a) and FIG. 14(b) are schematic diagrams showing another data structure of a media access control protocol data unit according to an embodiment of the present invention.
  • the MAC PDU format provided in Figures 14(a) and 14(b) is placed in reverse with the format of the MAC PDU provided in Figures 12(a) and 12(b).
  • MAC SDU1 and MAC SDU2 belong to the same logical channel 1.
  • the data is placed in the reverse direction with respect to Figures 13(a) and 13(b).
  • the MAC layer control unit MAC CE and the corresponding MAC subheader are placed at the end of the MAC PDU.
  • the MAC CE is located in front of the corresponding MAC sub-header, as shown in Figure 14 (a); or all MAC CEs are located at the forefront of the MAC sub-headers of all MAC CEs, as shown in Figure 14 (b). Place the first MAC SDU next to the last MAC CE, to the left of the last MAC CE.
  • the MAC subheader corresponding to the logical channel is placed next to the MAC SDU of the last logical channel to the left of the MAC SDU. If there are other MAC SDUs of the logical channel, they are placed in the order of the rules arranged in order, first all the MAC SDUs of the logical channel are placed, and then the corresponding MAC subheaders are placed. Finally, if there is padding padding, the padding bit is first placed, and finally the MAC subheader corresponding to the padding bit is placed.
  • FIG. 13(a) and FIG. 13(b) are schematic diagrams showing the structure of the MAC PDU data. After the MAC SDU and the logical channel are arranged in the order of the MAC SDUs belonging to the same logical channel, the corresponding logical channel is placed on the right side. MAC subheader.
  • a MAC PDU data structure is further provided.
  • the logical channel 2 is placed.
  • the MAC sub-headers of the logical channel 1 and the MAC sub-headers of the logical channel 2 are sequentially sorted, and the MAC sub-headers of all the logical channels are arranged and Padding is arranged.
  • the arrangement sequence diagram is as shown in Fig. 15(a) and Fig. 15(b).
  • the media access control protocol data unit data structure provided by the embodiment of the present invention, when the receiving end receives the data, for example, when the user equipment receives the downlink data sent by the access network device, or the access network device receives the user equipment, When the uplink data is received, the receiving end can determine the location of the MAC SDU in the MAC PDU, and reduce the delay of understanding the packet MAC PDU.
  • the unpacking of the MAC CE and the MAC SDU may be started from the two ends of the MAC PDU, and the delay of unpacking the MAC PDU is further reduced.
  • the access network device forms a MAC PDU for the downlink data; or when the user equipment forms a MAC PDU for the uplink data, the MAC SDU can be directly written because the location of the MAC SDU in the MAC PDU is determined. Into the MAC PDU, the rate at which the MAC PDU is generated is increased.
  • FIG. 16 is a schematic diagram of a media access control subheader of a medium access control layer control unit according to an embodiment of the present invention
  • FIG. 18 is a media access control of another media access control service data unit according to an embodiment of the present invention
  • FIG. 19 is a schematic diagram of a media access control subheader with padding bits according to an embodiment of the present invention.
  • the MAC sub-header of the MAC CE, the MAC sub-header of the MAC SDU, and the MAC sub-header of the padding bit all include a Logical Channel Identity (LCID).
  • LCID Logical Channel Identity
  • the MAC sub-header of the MAC CE may further include a first indication bit, that is, an indication bit E0, and the indication bit E0 is used to indicate whether it is the last MAC CE.
  • the indication bit E0 of the MAC sub-header of the MAC CE1 is 1, the MAC CE1 corresponding to the MAC sub-header of the MAC CE1 is followed by the MAC CE1 (or the adjacent right side). There is MAC CE2.
  • the indication bit E0 of the MAC sub-header of the MAC CE2 is 1, the MAC CE2 corresponding to the MAC sub-header of the MAC CE2 is not followed by the MAC CE2 (or the adjacent right side).
  • MAC CE3 but MAC SDU.
  • the MAC sub-header of the MAC SDU further includes a length L, a second indicator bit E, and a third indicator bit E0 of each MAC SDU; Whether the MAC SDU of the channel is the last one; the third indication bit E0 is used to indicate whether it is the last logical channel.
  • the LCID of the logical channel does not include the LCID; if the transport block includes two or more logical channels, the MAC subhead of the logical channel includes the LCID.
  • the MAC subheader of the MAC SDU of the first logical channel includes the length of each MAC SDU.
  • the MAC sub-interface of the logical channel may not include the logical channel identifier, or may have no indication bit E0, only the length. L, used to indicate the length of each MAC SDU.
  • the media access control subheader of the media access control service data unit provided by the embodiment of the present invention considers that the logical channel is not multiplexed compared with the prior art, reduces the content of the MAC subheader of the logical channel, and improves resources. Utilization.
  • the MAC subheader of the padding bit also includes the length of the padding bit.
  • the media access control protocol data unit data structure provided by the embodiment of the present invention implements the advance determination of the MAC SDU location.
  • the receiving end receives the MAC SDU, it can determine the location of the MAC SDU in the MAC PDU, and reduce the delay of understanding the packet MAC PDU.
  • trans-carrier transport block mapping is described in detail in FIGS. 4 to 11 above, and the MAC PDU data structure is described in detail in FIGS. 12(a) and 12(b) to FIG. 19, and the present invention will be described below with reference to FIGS. 20 and 21.
  • the access network device and user equipment provided by the embodiment are described in detail.
  • FIG. 20 is an access network device according to an embodiment of the present invention. As shown in FIG. 20, the access network device may include a sending unit 610.
  • the sending unit 610 is configured to send first configuration information to the user equipment, where the first configuration information includes indication information.
  • the indication information is used to indicate the cell mapping of the cell to which the cross-cell transport block mapping is applied and the block mapping order on the cell to which the cross-cell transport block mapping is applied.
  • the access network device provided by the embodiment of the present invention may send the first configuration information to the user equipment by using the high layer control signaling or the physical layer control signaling to indicate that the cell that applies the cross-cell transport block mapping is applied, and the cross-cell transport block mapping cell is applied.
  • the block order makes data transmission across the cell transport block.
  • the indication information is used to indicate that the cross-cell transport block mapping is applied on the cells in all active states.
  • the first configuration information may further include a threshold parameter.
  • the cell to which the block mapping is applied across the cell transmission is indicated by the indication information and the threshold parameter.
  • cross-cell transport block mapping is applied on all activated cells.
  • cross-cell transport block mapping is applied on the partially activated cells in all activated cells.
  • the indication information may include at least one cell index list, each cell index list includes at least one first cell index number, and a cell index list is used to indicate at least one first cell index Cross-cell transport block mapping is applied on the cell corresponding to the number.
  • the cell corresponding to the partial carrier in the activated cell may be indicated by the at least one cell index list to apply the cross-cell transport block mapping.
  • the indication information in the first configuration information may include a packet index number, and the grouping
  • the index number indicates a packet to which the cell corresponding to the scheduling resource belongs, and the packet includes at least one cell.
  • a packet index number is used to indicate that the cross-cell transport block mapping is applied to at least one cell included in the packet.
  • the indication information is used to indicate that the cross-cell transport block mapping is applied on the cell corresponding to the scheduling resource indicated by the physical layer control signaling.
  • the indication information in the first configuration information that is sent by the access network to the user equipment by using the high-layer control signaling or the physical layer control signaling to indicate the block mapping sequence of the cell to which the cross-cell transport block mapping is applied is used.
  • the indication information may include a first block number, configured to indicate a block that is transmitted on the scheduling resource when the cell corresponding to the scheduling resource applies the cross-cell transport block mapping. The order of the block mapping.
  • each cell uses a respective HARQ entity, and uses the process number of the respective HARQ process, but uses the method of applying the cross-cell transport block mapping method provided by the embodiment of the present invention to perform data transmission. If a cell transmits a block of the same transport block, it needs to determine the location of the HARQ entity, that is, the anchor cell.
  • the sending unit 610 of the access network device is further configured to send the second configuration information to the user equipment, where the second configuration information includes the hybrid automatic repeat request HARQ entity information, and is used to indicate the application.
  • the second configuration information includes the hybrid automatic repeat request HARQ entity information, and is used to indicate the application.
  • the sending unit 610 is further configured to send third configuration information to the user equipment, where the third configuration information includes a second block number or a second cell index number, and the second block number or The second cell index number is used to indicate location information of the hybrid automatic repeat request HARQ feedback.
  • the access network device configureds a cell that applies cross-cell transport block mapping by using high-layer control signaling or physical layer control signaling, and applies a block mapping sequence of a cell mapped by a cross-cell transport block, and HARQ.
  • the entity and its process number implement data transmission across the cell transport block map.
  • the third configuration information when data transmission is performed by using a puncturing manner in a data transmission process using a cross-cell transmission block, the third configuration information further includes puncturing transmission information, which is used to indicate that A method of puncturing a transport block when performing puncturing transmission on a transport block mapped across a cell transport block.
  • the manner of punching holes in the transport block may include: punching holes in the entire transport block; or punching holes in the blocks of the transport block.
  • the punctured transmission information may carry at least one third block number or at least one third cell index number to indicate at least one third The block number or the block corresponding to the at least one third cell index number is punctured.
  • the access network device may separately configure, by using the upper layer control signaling or the physical layer control signaling, the cell in the first configuration information, which is used to indicate the application cross-cell transport block mapping, and the application.
  • the first configuration information and the second configuration information, or the first configuration information, the second configuration information, and the third configuration information may also be configured by using the same high layer control signaling or physical layer control signaling. This is not limited in the embodiment of the present invention.
  • the receiving unit 620 may further be configured to receive data sent by other devices, such as the user equipment.
  • the access network device may further include a processing unit 630, configured to process the received data, for example, perform processing such as unpacking the data transmitted by the user equipment by using the cross-cell transport block mapping, and the like.
  • the sending unit 610 may be a transmitter
  • the processing unit 630 may be a processor
  • the receiving unit 620 may be a receiver
  • the embodiment of the present invention further provides a media access control protocol data unit data structure.
  • the media access control protocol data unit may be referred to as a transport block, and the transport block may include at least one medium access control layer control unit MAC CE, and media access of at least one MAC CE corresponding to at least one MAC CE. Controlling a MAC subheader, at least one medium access control service data unit MAC SDU belonging to at least one logical channel, and media access control MAC subheaders, padding bits and padding MACs of at least one logical control channel corresponding to at least one MAC SDU Child head.
  • the format of the transport block is: the MAC subheaders of at least one MAC CE are sequentially arranged, and are located at the first end of the transport block, and the MAC subheaders of the last MAC CE in the MAC subheaders of at least one MAC CE are sequentially arranged and The first MAC CE of at least one of the MAC CEs arranged in sequence is adjacent, as shown in FIG. 13(a).
  • the at least one MAC CE and the MAC sub-head of the corresponding at least one MAC CE are located at the first end of the transport block, where each MAC CE of the at least one MAC CE is adjacent to the MAC sub-head of the corresponding MAC CE, and Located at the first end of the MAC subheader corresponding to the MAC CE, as shown in Figure 13(b).
  • At least one MAC SDU belonging to the same logical channel is sequentially arranged.
  • the first MAC SDU of the at least one MAC SDU belonging to the first logical channel of the at least one logical channel is adjacent to the last MAC CE of the transport block, and the last MAC of the at least one MAC SDU of the first logical channel
  • the SDU is adjacent to the MAC subheader of the corresponding first logical channel; the MAC subheader of the first logical channel is adjacent to the first MAC SDU of the at least one MAC SDU belonging to the second logical channel in the at least one logical channel, eg Figures 13(a) and 13(b) or Figures 14(a) and 14(b).
  • At least one MAC SDU belonging to the same logical channel is sequentially arranged.
  • the first MAC SDU of the at least one MAC SDU belonging to the first logical channel of the at least one logical channel is adjacent to the last MAC CE of the transport block, and the last MAC of the at least one MAC SDU of the first logical channel
  • the SDU is adjacent to the first MAC SDU of the at least one MAC SDU belonging to the second logical channel of the at least one logical channel, and belongs to the last MAC SDU of the at least one MAC SDU of the last logical channel of the at least one logical channel Adjacent to the MAC subheader of the first logical channel of the at least one logical channel sequentially sorted, as shown in FIGS. 15(a) and 15(b).
  • the MAC subheader of the last logical channel in the transport block is The padding bits are adjacent, and the padding bits are adjacent to the MAC subheaders of the padding bits.
  • the media access control protocol data unit data structure provided by the embodiment of the present invention reduces the processing delay by placing the MAC subheader and then placing the MAC SDU in the data structure of the traditional media access control protocol data unit.
  • the MAC SDU location can only be determined after receiving all MAC SDUs of one logical channel. Therefore, the previously received MAC SDU needs to be placed in an additional cache. In the (buffer), after the MAC sub-header of the MAC SDU is determined, it can be written into the buffer of the MAC SDU, and the write is performed twice, which increases the processing delay.
  • the media access control protocol data unit data structure provided by the embodiment of the present invention, when the receiving end receives the data, for example, when the user equipment receives the downlink data sent by the access network device, or the access network device receives the user equipment, When the uplink data is received, the receiving end can determine the location of the MAC SDU in the MAC PDU, and reduce the delay of understanding the packet MAC PDU.
  • the MAC subheader of each MAC CE, the MAC subheader of each logical channel, and the MAC subheader of the padding bit all include a logical channel identifier.
  • the MAC subheader of each MAC CE further includes a first indicator bit, and the first indicator bit is used to indicate whether it is the last MAC CE.
  • the MAC subheader of each logical channel further includes a length, a second indicator bit, and a third indicator bit of each MAC SDU of the at least one MAC SDU belonging to the corresponding logical channel; and the second indicator bit is used to indicate whether the MAC SDU of the channel to which the channel belongs is The last one; the third indicator bit is used to indicate whether it is the last logical channel of the transport block.
  • the MAC subheader of the padding bit also includes the length of the padding bit.
  • the MAC subheader of the logical channel includes at least one MAC that belongs to the logical channel.
  • the length and fourth indicator bit of each MAC SDU in the SDU is not multiplexed with data on the other logical channel.
  • FIG. 21 is a user equipment according to an embodiment of the present invention. As shown in FIG. 21, the user equipment may include a receiving unit 710 and a processing unit 720.
  • the receiving unit 710 is configured to receive first configuration information sent by the access network, where the first configuration information includes indication information.
  • a processing unit configured to determine, according to the indication information, a cell mapping sequence that applies a cross-cell transport block mapping and a cell mapping sequence on a cell to which the cross-cell transport block mapping is applied.
  • the user equipment provided by the embodiment of the present invention receives the first configuration information that is sent by the access network device by using the high layer control signaling or the physical layer control signaling, and determines, according to the first configuration information, the cell that applies the cross-cell transport block mapping, and the application cross
  • the cell transport block maps the block order of the cells, and realizes data transmission of the cross-cell transport block.
  • the processing unit 720 determines, according to the indication information, the cell that applies the cross-cell transport block mapping, including:
  • the processing unit 720 determines to apply the cross-cell transport block mapping on the activated cell according to the indication information.
  • the first configuration information may further include a threshold parameter
  • the processing unit 720 determines, according to the indication information, the cell that applies the cross-cell transport block mapping, and may include:
  • the processing unit 720 determines, based on the indication information and the threshold parameter, a cell to which the cross-cell transport block mapping is applied.
  • the user equipment applies cross-cell transport block mapping on all activated cells.
  • the user equipment applies cross-cell transport block mapping on the partially activated cells in all activated cells.
  • the indication information includes at least one cell index list, each cell index list includes at least one first cell index number; and the processing unit determines, according to the indication information, that the application cross-cell transport block mapping Community, including:
  • the processing unit determines, according to the indication information, that the cross-cell transport block mapping is applied on the cell corresponding to the at least one first cell index number.
  • the cell corresponding to the partial carrier in the activated cell may be used to apply the cross-cell transport block mapping by using at least one cell index list.
  • the indication information includes a packet index number, the packet index number indicates a packet to which the cell corresponding to the scheduling resource belongs, and the packet includes at least one cell.
  • the determining, by the processing unit 720, the cell that applies the cross-cell transport block mapping according to the indication information may include:
  • the processing unit 720 determines to apply a cross-cell transport block mapping in at least one cell included in the packet according to the packet index number.
  • the determining, by the processing unit 720, the cell that applies the cross-cell transport block mapping according to the indication information may include:
  • the processing unit 720 determines, according to the indication information, that the cross-cell transport block mapping is applied on the cell corresponding to the scheduling resource.
  • the indication information that is received by the receiving unit 710 may be at least one mapping order list, and is used to indicate that a block mapping sequence in which a cross-cell transport block mapping is applied is applied.
  • the indication information includes a first block number
  • the processing unit 720 determines, according to the indication information, a block mapping sequence on the cell to which the cross-cell transport block mapping is applied, including:
  • the processing unit 720 determines, according to the first block number, a block mapping order of the blocks transmitted on the scheduling resource when the cell corresponding to the scheduling resource applies the cross-cell transport block mapping.
  • the receiving unit 710 is further configured to receive second configuration information that is sent by the access network device, where the second configuration information includes hybrid automatic repeat request (HARQ) entity information.
  • HARQ hybrid automatic repeat request
  • the processing unit 720 is further configured to determine, according to the second configuration information, a hybrid automatic repeat request HARQ entity to which data retransmission is applied across the cell transport block mapping, and a HARQ process used for data retransmission.
  • the receiving unit is further configured to receive third configuration information that is sent by the access network device, where the third configuration information includes a second block number or a second cell index number.
  • the processing unit 720 is further configured to determine location information of the hybrid automatic repeat request HARQ feedback according to the third configuration information.
  • the receiving access network device configures the cell that applies the cross-cell transport block mapping by using the high layer control signaling or the physical layer control signaling, and applies the block mapping sequence of the cell mapped by the cross-cell transport block mapping. And the HARQ entity and its process number, determining, according to the configuration information sent by the access network device, the cell to which the cross-cell transport block mapping is applied, the block mapping order of the cell to which the cross-cell transport block mapping is applied, and the HARQ entity and its process number And according to the determined information for data transmission, the data transmission of the cross-cell transport block mapping is realized.
  • the third configuration information further includes punctured transmission information.
  • the processing unit 720 determines, according to the punctured transmission information, a manner of puncturing the transport block when performing puncturing transmission on the transport block mapped across the cell transport block map.
  • the way to punch holes in the transport block includes: punching holes in the entire transport block; or punching holes in the block of the transport block.
  • the punctured transmission information includes at least one third block number or at least one third cell index number, and the processing unit 720 punctured the fast-transferred block, including:
  • the processing unit 720 determines to perform puncturing on the block corresponding to the at least one third block number or the at least one third cell index number according to the at least one third block number or the at least one third cell index number.
  • the processing unit 720 When data transmission is performed by using a puncturing method in the data transmission process of the inter-cell transmission block, the processing unit 720 performs puncturing according to the determined puncturing mode and performs data transmission.
  • the user may separately receive the access network device to configure, by using the upper layer control signaling or the physical layer control signaling, the cell in the first configuration information, which is used to indicate the application cross-cell transport block mapping.
  • the indication information of the block mapping order of the cells mapped across the cell transport block is applied.
  • the user equipment may also receive the first configuration information and the second configuration information that are configured by the access network device by using the same high layer control signaling or the physical layer control signaling, which is not used in the embodiment of the present invention. limit.
  • the sending unit 730 may be further configured to send data to other devices, such as an access network device.
  • the transport block includes at least one medium access control layer control unit MAC CE, and at least one MAC CE media access control MAC sub-head corresponding to at least one MAC CE belongs to at least one At least one media access control service data unit MAC SDU of the logical channel, the media access control MAC subheader of the at least one logical control channel corresponding to the at least one MAC SDU, the padding bit, and the MAC subheader of the padding bit.
  • MAC SDU media access control service data unit
  • the media access control MAC subheader of the at least one logical control channel corresponding to the at least one MAC SDU
  • the padding bit and the MAC subheader of the padding bit.
  • the format of the transport block may be: the MAC subheaders of at least one MAC CE are sequentially arranged, and are located at the first end of the transport block, and the MAC subheaders of the last MAC CE in the MAC subheaders of at least one MAC CE are sequentially arranged and sequentially The first MAC CE of the at least one MAC CE arranged is adjacent, as shown in FIG. 13(a).
  • the at least one MAC CE and the MAC sub-head of the corresponding at least one MAC CE are located at the first end of the transport block, where each MAC CE of the at least one MAC CE is adjacent to the MAC sub-head of the corresponding MAC CE, and Located at the first end of the MAC subheader corresponding to the MAC CE, as shown in Figure 13(b).
  • At least one MAC SDU belonging to the same logical channel is sequentially arranged.
  • the first MAC SDU of the at least one MAC SDU belonging to the first logical channel of the at least one logical channel is adjacent to the last MAC CE of the transport block, and the last MAC of the at least one MAC SDU of the first logical channel
  • the SDU is adjacent to the MAC subheader of the corresponding first logical channel; the MAC subheader of the first logical channel is adjacent to the first MAC SDU of the at least one MAC SDU belonging to the second logical channel in the at least one logical channel, As shown in Figures 13(a) and 13(b) and Figures 14(a) and 14(b).
  • At least one MAC SDU belonging to the same logical channel is sequentially arranged.
  • the first MAC SDU of the at least one MAC SDU belonging to the first logical channel of the at least one logical channel is adjacent to the last MAC CE of the transport block, and the last MAC of the at least one MAC SDU of the first logical channel
  • the SDU is adjacent to the first MAC SDU of the at least one MAC SDU belonging to the second logical channel of the at least one logical channel, and belongs to the last MAC SDU of the at least one MAC SDU of the last logical channel of the at least one logical channel Adjacent to the MAC subheader of the first logical channel of the at least one logical channel sequentially sorted, as shown in FIGS. 14(a) and 14(b).
  • the MAC subheader of the last logical channel in the transport block is adjacent to the padding bit, and the padding bit is adjacent to the MAC subheader of the padding bit, as shown in FIG. 13(a), FIG. 13(b), FIG. 14(a), and FIG. 14(b), Fig. 15(a) and Fig. 15(b).
  • the MAC subheader of each MAC CE, the MAC subheader of each logical channel, and the MAC subheader of the padding bit all include a logical channel identifier, as shown in FIG. 16 to FIG. 18.
  • the MAC subheader of each MAC CE further includes a first indicator bit, and the first indicator bit is used to indicate whether it is the last MAC CE, as shown in FIG. 16.
  • the MAC subheader of each logical channel further includes a length, a second indicator bit, and a third indicator bit of each MAC SDU of the at least one MAC SDU belonging to the corresponding logical channel; and the second indicator bit is used to indicate whether the MAC SDU of the channel to which the channel belongs is The last one; the third indicator bit is used to indicate whether it is the last logical channel of the transport block, as shown in FIG.
  • the MAC subheader of the padding bit also includes the length of the padding bit, as shown in FIG.
  • the MAC subheader of the third logical channel includes the length and the fourth indication bit of each MAC SDU in the at least one MAC SDU belonging to the third logical channel, as shown in FIG.
  • the radio link control layer (RLC) protocol first retains the data packet, and after receiving the uplink scheduling grant sent by the base station, the RLC layer determines the number of packets to be sent by the MAC layer, and then the MAC layer. The packet is multiplexed with other logical channels.
  • the RLC layer In the new radio (NR) communication, in order to enable the MAC layer to be unpacked in advance, the data structure of the data structure shown in FIG. 12(a) and FIGS. 12(b) to 19, the RLC layer firstly PDU data. The packet is sent to the MAC layer, but the RLC layer retains the backup data of the transmitted packet. Because the data sent by the RLC layer to the MAC layer is not necessarily the data required by the MAC layer, or the RLC layer sends a lot of data in the MAC layer, the MAC layer may not need so much data, and the RLC layer sends to the RLC layer. The data in the MAC layer may also need segmentation processing. The segmentation process still needs to be performed at the RLC layer.
  • the RLC segments the PDU, and the MAC only uses the first. For the next time, the remaining resources are sent again, so the data sent by the RLC layer to the MAC layer needs to be backed up at the RLC layer.
  • the BSR Buffer Status Report
  • the BSR is to tell the base station how much data needs to be sent at the current time, so that the base station determines to allocate uplink resources according to the buffer status report.
  • all the data packets to be sent from the MAC layer to the PDCP layer are added to calculate a sum, and the calculated sum is reported to the base station. This is equivalent to the RLC layer sending data to the MAC layer, and the BSR calculation also calculates the data backed up by the RLC layer, that is, two calculations are performed.
  • the RLC layer if the RLC layer does not receive the uplink scheduling authorization, the RLC PDU is sent to the MAC layer, but if the backup is left, the BSR (buffer status report) calculation does not calculate the backup. Part of the data.

Abstract

一种跨小区传输块映射的方法、接入网设备和用户设备。该方法包括：接入网设备向用户设备发送第一配置信息，第一配置信息包括指示信息。指示信息用于指示应用跨小区传输块映射的小区和在应用了跨小区传输块映射的小区上的分块映射顺序。采用该跨小区传输块映射的方法，通过高层控制信令或者物理层控制信令向用户设备发送第一配置信息，以指示应用跨小区传输块映射的小区，和应用跨小区传输块映射小区的分块顺序，实现了跨小区传输块的数据传输。

Description

跨小区传输块映射的方法、接入网设备和用户设备
本申请要求在2017年1月5日提交国家专利局、申请号为201710008249.0、发明名称为“跨小区传输块映射的方法、接入网设备和用户设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信领域，尤其涉及一种跨小区传输块映射的方法、接入网设备和用户设备。
背景技术
在长期演进(Long Term Evolution，LTE)中，对于不同载波或者不同传输时间间隔(Transmission Time Interval，TTI)上的传输资源，媒体控制接入(Media Access Control，MAC)层为每一个载波或TTI上的传输资源生成一个媒体接入控制协议数据单元(Media Access Control Protocol Data Unit，MAC PDU)，或者称为生成一个传输块。对每个MAC PDU或传输块进行校验添加、信道编码、调制、资源块映射等物理层的操作，最终映射到一个载波上进行数据发送。如图1所示，传输块一、传输块二分别进行校验添加、信道编码、调制、资源块映射等物理层的操作，最终分别映射到载波一、载波二进行数据发送。
现在提出一种新的跨小区传输块的映射方式，即将MAC层生成的MAC PDU或者传输块分割成多个分块，分别映射到多个载波或者TTI的传输资源上进行发送，如图2所示，传输块经过物理层的校验码添加、信道编码、调制、资源块映射等操作，被分成两个分块，分别映射到载波一和载波二上进行数据发送，但现有机制中还不存在跨小区传输块映射的映射机制。
发明内容
本发明实施例提供一种跨小区传输块映射的方法、接入网设备和用户设备，通过接入网设备通过高层控制信令和/或物理层控制信令配置应用跨小区传输块映射的小区、分块映射顺序以及混合自动重传请求(Hybrid Automatic Repeat Request，HARQ)实体位置，实现了跨小区传输块的数据传输。
第一方面，本发明实施例提供了一种跨小区传输块映射的方法，该方法包括：
接入网设备通过高层控制信令(如无线资源控制(Radio Resource Control，RRC)消息，媒体接入控制(MAC)层控制单元(control element，CE))或者物理层控制信令(如物理下行控制信道(Physical Downlink Control Channel，PDCCH))向用户设备发送第一配置信息，第一配置信息包括指示信息。
指示信息用于指示应用跨小区传输块映射的小区和在应用了跨小区传输块映射的小 区上的分块映射顺序。
本发明实施例提供的跨小区传输块映射的方法通过高层控制信令或者物理层控制信令配置支持小区应用跨小区传输块映射，以及指示小区应用跨小区传输块映射的小区的分块映射顺序，实现了跨小区传输块的数据传输。
结合第一方面，在第一方面的第一种可能实现的方式中，指示信息可以包括至少一个小区索引列表，每个小区索引列表包括至少一个第一小区索引号；小区索引列表用于指示在至少一个第一小区索引号对应的小区上应用跨小区传输块映射。
结合第一方面，在第一方面的第二种可能实现的方式中，指示信息用于指示在所有激活态的小区上应用跨小区传输块映射。
结合第一方面的第二种可能实现的方式，在第一方面的第三种可能实现的方式中，第一配置信息还包括阈值参数；
若激活态的小区数量小于阈值参数，则在所有激活态的小区上应用跨小区传输块映射；
若激活态的小区数量大于阈值参数，则在所有激活态的小区的部分激活态的小区上应用跨小区传输块映射。
结合第一方面，在第一方面的第四种可能实现的方式中，指示信息包括分组索引号，分组索引号指示调度资源所对应的小区所属的分组，分组包括至少一个小区。
分组索引号，用于指示在分组包括的至少一个小区应用跨小区传输块映射。
结合第一方面，在第一方面的第五种可能实现的方式中，指示信息用于指示在调度资源对应的小区上应用跨小区传输块映射。
通过物理层控制信令配置支持应用跨小区传输块映射的小区，实现了支持跨小区传输块的数据传输。
结合第一方面、第一方面的第一种可能实现的方式至第一方面的第五种可能实现的方式中的任一可能实现的方式，在第一方面的第六种可能实现的方式中，指示信息可以为至少一个映射顺序列表，用于指示应用了跨小区传输块映射的小区上的分块映射顺序。
结合第一方面或第一方面的第四种可能实现的方式，在第一方面的第七种可能实现的方式中，指示信息可以包括第一分块号，用于指示在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
进一步的，指示信息还可以包括分块的总数或者最后一个分块的指示信息，用于避免一个或者多个分块丢失的情况。
结合第一方面、第一方面的第一种可能实现的方式至第一方面的第七种可能实现的方式中，在第一方面的第八种可能实现的方式中，该方法还可以包括：
接入网设备向用户设备发送第二配置信息，第二配置信息包括混合自动重传请求HARQ实体信息，用于指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体；或者，指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体，以及进行数据重传所采用的混合自动重传请求HARQ进程；或者，指示数据重传所采用的混合自动重传请求HARQ进程。
结合第一方面的第八种可能实现的方式，在第一方面的第九种可能实现的方式，该方法还可以包括：
接入网设备向用户设备发送第三配置信息，第三配置信息包括第二分块号或第二小区 索引号，第二分块号或者第二小区索引号用于指示混合自动重传请求HARQ反馈的位置信息。
结合第一方面的第九种可能实现的方式，在第一方面的第十种可能实现的方式中，第三配置信息还包括打孔传输信息，用于指示在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式，以便于进行打孔传输时，用户设备确定打孔的方式。
结合第一方面的第十种可能实现的方式，在第一方面的第十一种可能实现的方式中，在传输块上打孔的方式包括：在整个传输块上打孔；或者在传输块的分块上打孔。
结合第一方面的第十一种可能实现的方式，在第一方面的第十二种可能实现的方式中，打孔传输信息包括至少一个第三分块号或至少一个第三小区索引号，用于指示在至少一个第三分块号或至少一个第三小区索引号对应的分块上打孔。
第二方面，本发明实施例提供了一种跨小区传输块映射的方法，该方法可以包括：
用户设备接收接入网发送的第一配置信息，第一配置信息包括指示信息；
用户设备根据指示信息确定应用跨小区传输块映射的小区和在应用了跨小区传输块映射的小区上的分块映射顺序。
若用户设备传输上行数据，则按照在小区上应用跨小区传输块映射以及在小区上的分块映射顺序对上行数据进行分块传输；若用户设备接收到下行数据，则按照在小区上应用跨小区传输块映射以及在小区上的分块映射顺序对下行数据进行解包。
采用本发明实施例提供的跨小区传输块映射的方法，实现了跨小区的分块的数据传输。
结合第二方面，在第二方面的第一种可能实现的方式中，指示信息包括至少一个小区索引列表，每个小区索引列表包括至少一个第一小区索引号；用户设备根据指示信息确定应用跨小区传输块映射的小区，包括：
用户设备根据指示信息，确定在至少一个第一小区索引号对应的小区上应用跨小区传输块映射。
结合第二方面，在第二方面的第二种可能实现的方式中，用户设备根据指示信息确定应用跨小区传输块映射的小区，包括：
用户设备根据指示信息确定在激活态的小区上应用跨小区传输块映射。
结合第二方面的第二种可能实现的方式，在第二方面的第三种可能实现的方式中，第一配置信息还包括阈值参数，该方法包括：
用户设备根据指示信息和阈值参数确定应用跨小区传输块映射的小区。
若激活态的小区数量小于阈值参数，则用户设备在所有激活态的小区上应用跨小区传输块映射；
若激活态的小区数量大于阈值参数，则用户设备在所有激活态的小区中的部分激活态的小区上应用跨小区传输块映射。
通过高层控制信令配置支持应用跨小区传输块数据传输的映射关系。
结合第二方面，在第二方面的第四种可能实现的方式中，指示信息包括分组索引号，分组索引号指示调度资源所对应的小区所属的分组，分组包括至少一个小区；用户设备根据指示信息确定应用跨小区传输块映射的小区，包括：
用户设备根据分组索引号确定在分组包括的至少一个小区应用跨小区传输块映射。
结合第二方面，在第二方面的第五种可能实现的方式中，用户设备根据指示信息确定应用跨小区传输块映射的小区，包括：
用户设备根据指示信息确定在调度资源对应的小区上应用跨小区传输块映射。
通过物理层控制信令配置支持应用跨小区传输块映射的小区，实现了支持跨小区传输块的数据传输。
结合第二方面、第二方面的第一种可能实现的方式至第二方面的第五种可能实现的方式中的任一可能实现的方式，在第二方面的第六种可能实现的方式中，指示信息为至少一个映射顺序列表，用于指示在应用了跨小区传输块映射的小区上的分块映射顺序。
结合第二方面或第二方面的第四种可能实现的方式，在第二方面的第七种可能实现的方式中，指示信息包括第一分块号，用户设备根据指示信息确定在应用了跨小区传输块映射的小区上的分块映射顺序，包括：
用户设备根据第一分块号确定在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
进一步的，指示信息还可以包括分块的总数或者最后一个分块的指示信息，用于避免一个或者多个分块丢失的情况。
结合第二方面、第二方面的第一种可能实现的方式至第二方面的第七种可能实现的方式中，在第一方面的第八种可能实现的方式中，该方法还可以包括：
用户设备接收接入网设备发送的第二配置信息，第二配置信息包括混合自动重传请求HARQ实体信息；
用户设备根据第二配置信息确定应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体；或者，指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体，以及进行数据重传所采用的混合自动重传请求HARQ进程；或者，指示进行数据重传所采用的混合自动重传请求HARQ进程。
结合第二方面的第八种可能实现的方式，在第二方面的第九种可能实现的方式，还方法还包括：
用户设备接收接入网设备发送的第三配置信息，第三配置信息包括第二分块号或第二小区索引号。
用户设备根据第三配置信息确定混合自动重传请求HARQ反馈的位置信息。
结合第二方面的第九种可能实现的方式，在第二方面的第十种可能实现的方式中，第三配置信息还包括打孔传输信息，该方法包括：
用户设备根据打孔传输信息确定在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式，以便于进行打孔传输时，用户设备确定打孔的方式。
结合第二方面的第十种可能实现的方式，在第二方面的第十一种可能实现的方式中，在传输块上打孔的方式包括：在整个传输块上打孔；或者在传输块的分块上打孔。
结合第二方面的第十一种可能实现的方式，在第二方面的第十二种可能实现的方式中，打孔传输信息包括至少一个第三分块号或至少一个第三小区索引号，用户设备在传输快的分块上打孔，包括：
用户设备根据至少一个第三分块号或至少一个第三小区索引号确定在至少一个第三分块号或至少一个第三小区索引号对应的分块上打孔。
第三方面，本发明实施例提供了一种接入网设备，接入网设备可以包括发送单元
发送单元，用于通过高层控制信令(如RRC、MAC CE)或者物理层控制信令(如PDCCH)向用户设备发送第一配置信息，第一配置信息包括指示信息；
指示信息用于指示应用跨小区传输块映射的小区和在应用了跨小区传输块映射的小区上的分块映射顺序。
本发明实施例提供的跨小区传输块映射的接入网设备，通过高层控制信令或者物理层控制信令配置支持小区应用跨小区传输块映射，以及指示小区应用跨小区传输块映射的小区的分块映射顺序，实现了跨小区传输块的数据传输。
结合第三方面，在第三方面的第一种可能实现的方式中，指示信息包括至少一个小区索引列表，每个小区索引列表包括至少一个第一小区索引号；小区索引列表用于指示在至少一个第一小区索引号对应的小区上应用跨小区传输块映射。
结合第三方面，在第三方面的第二种可能实现的方式中，指示信息用于指示在所有激活态的小区上应用跨小区传输块映射。
结合第三方面的第二种可能实现的方式，在第三方面的第三种可能实现的方式中，第一配置信息还包括阈值参数；
若激活态的小区数量小于阈值参数，则在所有激活态的小区上应用跨小区传输块映射；
若激活态的小区数量大于阈值参数，则在所有激活态的小区中的部分激活态的小区上应用跨小区传输块映射。
结合第三方面，在第三方面的第四种可能实现的方式中，指示信息包括分组索引号，分组索引号指示调度资源所对应的小区所属的分组，分组包括至少一个小区。
分组索引号，用于指示在分组包括的至少一个小区应用跨小区传输块映射。
结合第三方面，在第三方面的第五种可能实现的方式中，指示信息用于指示在调度资源对应的小区上应用跨小区传输块映射。
通过物理层控制信令配置支持应用跨小区传输块映射的小区，实现了支持跨小区传输块的数据传输。
结合第三方面、第三方面的第一种可能实现的方式至第三方面的第五种可能实现的方式中的任一可能实现的方式，在第三方面的第六种可能实现的方式中，指示信息为至少一个映射顺序列表，用于指示在应用了跨小区传输块映射的小区上的分块映射顺序。
结合第三方面或第三方面的第四种可能实现的方式，在第三方面的第七种可能实现的方式中指示信息包括第一分块号，用于指示在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
进一步的，指示信息还可以包括分块的总数或者最后一个分块的指示信息，用于避免一个或者多个分块丢失的情况。
结合第三方面、第三方面的第一种可能实现的方式至第三方面的第七种可能实现的方式中，在第三方面的第八种可能实现的方式中，发送单元，还用于向用户设备发送第二配置信息，第二配置信息包括混合自动重传请求HARQ实体信息，用于指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体；或者，指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体，以及进行数据重传所采用的混合自动 重传请求HARQ进程；或者，指示进行数据重传所采用的混合自动重传请求HARQ进程。
结合第三方面的第八种可能实现的方式，在第三方面的第九种可能实现的方式，发送单元，还用于向用户设备发送第三配置信息，第三配置信息包括第二分块号或第二小区索引号，第二分块号或者第二小区索引号用于指示混合自动重传请求HARQ反馈的位置信息。
结合第三方面的第九种可能实现的方式，在第三方面的第十种可能实现的方式中，第三配置信息还包括打孔传输信息，用于指示在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式，以便于进行打孔传输时，用户设备确定打孔的方式。
结合第三方面的第十种可能实现的方式，在第三方面的第十一种可能实现的方式中，在传输块上打孔的方式包括：在整个传输块上打孔；或者在传输块的分块上打孔。
结合第三方面的第十一种可能实现的方式，在第三方面的第十二种可能实现的方式中，打孔传输信息包括至少一个第三分块号或至少一个第三小区索引号，用于指示在至少一个第三分块号或至少一个第三小区索引号对应的分块上打孔。
第四方面，本发明实施例提供了一种用户设备，用户设备包括：
接收单元，用于接收接入网发送的第一配置信息，第一配置信息包括指示信息；
处理单元，用于根据指示信息确定应用跨小区传输块映射的小区和在应用了跨小区传输块映射的小区上的分块映射顺序。
采用本发明实施例提供的用户设备，通过根据接入网设备发送的配置信息，确定跨小区传输块映射以及分块的顺序，实现了跨小区的分块的数据传输。
结合第四方面，在第四方面的第一种可能实现的方式中，指示信息包括至少一个小区索引列表，每个小区索引列表包括至少一个第一小区索引号；处理单元根据指示信息确定应用跨小区传输块映射的小区，包括：
处理单元根据指示信息，确定在至少一个第一小区索引号对应的小区上应用跨小区传输块映射。
结合第四方面，在第四方面的第二种可能实现的方式中，处理单元根据指示信息确定应用跨小区传输块映射的小区，包括：
处理单元根据指示信息确定在所有激活态的小区上应用跨小区传输块映射。
结合第四方面的第二种可能实现的方式，在第四方面的第三种可能实现的方式中，第一配置信息还包括阈值参数，
处理单元根据指示信息和阈值参数确定应用跨小区传输块映射的小区。
可选地，处理单元根据指示信息和阈值参数确定应用跨小区传输块映射的小区，包括：
若激活态的小区数量小于阈值参数，则用户设备在所有激活态的小区上应用跨小区传输块映射；
若激活态的小区数量大于阈值参数，则用户设备在所有激活态的小区中的部分激活态的小区上应用跨小区传输块映射。
通过高层控制信令配置支持应用跨小区传输块数据传输的映射关系。
结合第四方面，在第四方面的第四种可能实现的方式中，指示信息包括分组索引号，分组索引号指示调度资源所对应的小区所属的分组，分组包括至少一个小区；处理单元根据指示信息确定应用跨小区传输块映射的小区，包括：
处理单元根据分组索引号确定在分组包括的至少一个小区应用跨小区传输块映射。
结合第四方面，在第四方面的第五种可能实现的方式中，处理单元根据指示信息确定应用跨小区传输块映射的小区，包括：
处理单元根据指示信息确定在调度资源对应的小区上应用跨小区传输块映射。
通过物理层控制信令配置支持应用跨小区传输块映射的小区，实现了支持跨小区传输块的数据传输。
结合第四方面、第四方面的第一种可能实现的方式至第四方面的第五种可能实现的方式中的任一可能实现的方式，在第四方面的第六种可能实现的方式中，指示信息为至少一个映射顺序列表。用户设备根据至少一个映射顺序列表确定在应用了跨小区传输块映射的小区的分块映射顺序。
结合第四方面、第四方面的第四种可能实现的方式或者第四方面的第五种可能实现的方式，在第四方面的第七种可能实现的方式中，指示信息包括第一分块号，处理单元根据指示信息确定在应用了跨小区传输块映射的小区上的分块映射顺序，包括：
处理单元根据第一分块号确定在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
进一步的，指示信息还可以包括分块的总数或者最后一个分块的指示信息，用于避免一个或者多个分块丢失的情况。
结合第四方面、第四方面的第一种可能实现的方式至第四方面的第七种可能实现的方式中，在第四方面的第八种可能实现的方式中，接收单元，还用于接收接入网设备发送的第二配置信息，第二配置信息包括混合自动重传请求HARQ实体信息；
处理单元，还用于根据第二配置信息确定应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体；或者，指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体，以及进行数据重传所采用的混合自动重传请求HARQ进程；或者，指示进行数据重传所采用的混合自动重传请求HARQ进程。
结合第四方面的第八种可能实现的方式，在第四方面的第九种可能实现的方式，接收单元，还用于接收接入网设备发送的第三配置信息，第三配置信息包括第二分块号或第二小区索引号；
处理单元，还用于根据第三配置信息确定混合自动重传请求HARQ反馈的位置信息。
结合第四方面的第九种可能实现的方式，在第四方面的第十种可能实现的方式中，第三配置信息还包括打孔传输信息；
处理单元根据打孔传输信息确定在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式，以便于进行打孔传输时，用户设备确定打孔的方式。
结合第四方面的第十种可能实现的方式，在第四方面的第十一种可能实现的方式中，在传输块上打孔的方式包括：在整个传输块上打孔；或者在传输块的分块上打孔。
结合第四方面的第十一种可能实现的方式，在第四方面的第十二种可能实现的方式中，打孔传输信息包括至少一个第三分块号或至少一个第三小区索引号，处理单元在传输快的分块上打孔，包括：
处理单元根据至少一个第三分块号或至少一个第三小区索引号确定在至少一个第三分块号或至少一个第三小区索引号对应的分块上打孔。
第五方面，本发明实施例提供了一种传输块，该传输块可以包括至少一个媒体接入控制层控制单元MAC CE，属于至少一个逻辑信道的至少一个媒体接入控制服务数据单元MAC SDU，至少一个MAC SDU对应的至少一个逻辑控制信道的媒体接入控制MAC子头、填充位和填充位的MAC子头；传输块的格式为：
属于同一逻辑信道的至少一个MAC SDU依次排列；属于至少一个逻辑信道中的第一逻辑信道的至少一个MAC SDU中的第一个MAC SDU与传输块中的最后一个MAC CE相邻，第一逻辑信道中的至少一个MAC SDU中的最后一个MAC SDU与对应的第一逻辑信道的MAC子头相邻；第一逻辑信道的MAC子头与属于至少一个逻辑信道中的第二逻辑信道的至少一个MAC SDU中的第一个MAC SDU相邻；或者，
属于同一逻辑信道的至少一个MAC SDU依次排列；属于至少一个逻辑信道中的第一逻辑信道的至少一个MAC SDU中的第一个MAC SDU与传输块中的最后一个MAC CE相邻，第一逻辑信道中的至少一个MAC SDU中的最后一个MAC SDU与属于至少一个逻辑信道中的第二逻辑信道的至少一个MAC SDU中的第一个MAC SDU相邻，属于至少一个逻辑信道中的最后一个逻辑信道的至少一个MAC SDU中的最后一个MAC SDU与依次排序的至少一个逻辑信道中的第一逻辑信道的MAC子头相邻；
传输块中的最后一个逻辑信道的MAC子头与填充位相邻，填充位与填充位的MAC子头相邻。
结合第五方面，在第五方面的第一种可能实现的方式中，每个逻辑信道的MAC子头包括第一逻辑信道标识和属于对应第一逻辑信道的至少一个MAC SDU中每个MAC SDU的长度、第一指示位、第二指示位；第一指示位用于指示所属信道的MAC SDU是否为最后一个MAC SDU；第二指示位用于指示是否为所述传输块的最后一个逻辑信道。
结合第五方面，或者第五方面的第一种可能实现的方式，在第五方面的第二种可能实现的方式中，若传输块中的至少一个逻辑信道中的第三逻辑信道上的数据不与至少一个逻辑信道中除第三逻辑信道之外的至少一个第四逻辑信道上的数据复用，则第三逻辑信道的MAC子头包括属于第三逻辑信道的至少一个MAC SDU中每个MAC SDU的长度和第四指示位；第四指示位用于指示所属信道的MAC SDU是否为最后一个MAC SDU。
结合第五方面，或者第五方面的第一种可能实现的方式，或者第五方面的第二种可能实现的方式，在第五方面的第三种可能实现的方式中，传输块还可以包括至少一个MAC CE对应的至少一个MAC CE的媒体接入控制MAC子头。传输块的格式可以为：
至少一个MAC CE的MAC子头依次排列，并位于传输块的第一端，依次排列的至少一个MAC CE的MAC子头中的最后一个MAC CE的MAC子头与依次排列的至少一个MAC CE中的第一个MAC CE相邻；或者，至少一个MAC CE与对应的至少一个MAC CE的MAC子头位于传输块的第一端，其中，至少一个MAC CE中的每个MAC CE与对应的MAC CE的MAC子头相邻，且位于对应MAC CE的MAC子头第一端。
结合第五方面的第三种可能实现的方式，在第五方面的第四种可能实现的方式中，每个MAC CE的MAC子头包括第二逻辑信道标识和第三指示位，第三指示位用于指示是否为所述传输块中的最后一个MAC CE。
结合第五方面以及第五方面的任一可能实现的方式，在第五方面的第五种可能实现的方式中，填充位的MAC子头包括第三逻辑信道标识和填充位的长度。
基于本发明实施例提供的跨小区传输块映射的方法、接入网设备和用户设备，接入网设备通过高层控制信令和/或物理层控制信令配置应用跨小区传输块映射的小区、应用跨小区传输块映射小区的分块映射顺序和以及HARQ实体信息，实现了跨小区传输块的数据传输。
附图说明
图1为现有技术中传输块映射的示意图；
图2为现有技术中传输块映射的示意图；
图3为本发明实施例提供的一种网络系统示意图；
图4为本发明实施例提供的一种跨小区传输块映射的方法流程图；
图5为本发明实施例提供的另一种块小区传输块映射的方法流程图；
图6为本发明实施例提供的一种物理层控制信令的格式示意图；
图7为本发明实施例提供的另一种物理层控制信令的格式示意图
图8为本发明实施例提供的另一种跨小区传输块映射的方法流程图；
图9为本发明实施例提供的另一种跨小区传输块映射的方法流程图；
图10为本发明实施例提供的一种跨小区传输块HARQ反馈位置指示的方法流程图；
图11为现有技术中媒体接入控制协议数据单元格式示意图；
图12(a)为本发明实施例提供的一种传输块的格式示意图；
图12(b)为本发明实施例提供的另一种传输块的格式示意图；
图13(a)为本发明实施例提供的一种媒体接入控制协议数据单元数据结构示意图；
图13(b)为本发明实施例提供的另一种媒体接入控制协议数据单元数据结构示意图；
图14(a)为本发明实施例提供的一种媒体接入控制协议数据单元数据结构示意图；
图14(b)为本发明实施例提供的另一种媒体接入控制协议数据单元数据结构示意图；
图15(a)为本发明实施例提供的一种媒体接入控制协议数据单元数据结构示意图；
图15(b)为本发明实施例提供的另一种媒体接入控制协议数据单元数据结构示意图；
图16为本发明实施例提供的一种媒体接入控制层控制单元的媒体接入控制子头的示意图；
图17为本发明实施例提供的一种媒体接入控制服务数据单元的媒体接入控制子头的示意图；
图18为本发明实施例提供的另一种媒体接入控制服务数据单元的媒体接入控制子头的示意图；
图19为本发明实施例提供的一种填充位的媒体接入控制子头的示意图；
图20为本发明实施例提供的一种接入网设备的结构示意图；
图21为本发明实施例提供的一种用户设备的结构示意图。
具体实施方式
本发明实施例提供了一种跨小区传输块映射的方法、接入网设备和用户设备，通过接入网设备采用高层控制信令和/或物理层控制信令配置应用跨小区传输块映射的小区、分块映射顺序和HARQ实体信息，实现了跨小区传输块的数据传输。
本发明实施例提供的跨小区传输块映射的方法可以应用于如图3的网络系统。
图3为本发明实施例提供的一种网络系统示意图。如图3所示，该网络系统可以包括至少一个接入网设备110和至少一个用户设备(User Equipment，UE)120。
在本发明实施例中，接入网设备110可以为无线接入网设备。接入网设备110可以为基站，演进节点(Evolved Node B,eNB)，接入点(Access Point,AP)等设备。UE 120可以为移动终端、具有网络接入功能的传感器等设备。
当UE 120处于至少一个接入网设备110提供的至少一个小区的覆盖范围内时，可以采用本发明实施例提供的跨小区传输块映射的方法实现跨小区传输块的数据传输。
例如：UE 120处于至少两个接入设备提供的至少两个小区的覆盖范围内，即为UE 120服务的小区有多个时，UE 120可以按照载波聚合(carrier aggregation，CA)或双连接(dual connectivity，DC)或协作点传输(Coordinated Multiple Point transmission，CoMP)的方式工作。其中，至少一个小区提供至少一种无线接口技术同时为UE120提供无线资源。例如：UE120向接入网设备110发送无线资源请求；接入网设备110接收到无线资源请求后为UE分配上行传输资源，即接入网设备110完成对UE 120的上行调度授权(Uplink grant)；UE 120根据接入网设备110分配的无线资源向接入网设备传输数据。
本发明实施例提供的跨小区传输块映射的方法、接入网设备和用户设备也适用于通用移动通信系统(Universal Mobile Telecommunications System，UMTS)系统、码分多址(CodeDivisionMultipleAccess，CDMA)系统、无线局域网(Wireless Local Area Network，WLAN)或未来5G(the fifth generation)无线通信系统，等等。
下面结合图4至图7对对本发明实施例提供的跨小区传输块映射的方法进行详细的说明。
图4为本发明实施例提供的一种跨小区传输块映射的方法流程图。如图4所示，该方法可以包括以下步骤：
S210，接入网设备向用户设备发送第一配置信息，第一配置信息包括指示信息。
指示信息用于指示应用跨小区传输块映射的小区和在应用了跨小区传输块映射的所述小区上的分块映射顺序。
在本发明实施例中，指示信息可以为，例如占用第一配置信息数据中的1个比特位，如该1比特位上为“0”时，则表示不在小区上应用跨小区传输块映射；若该1比特位上为“1”时，则表示在小区上应用跨小区传输块映射。
可选地，在本发明的一个实施例中，指示信息还可以包括至少一个小区索引列表，每个小区索引列表可以包括至少一个小区索引号，每个小区索引号对应一个小区。该至少一个小区索引列表可以指示在至少一个小区索引列表包括的至少一个小区索引号对应的小区上应用跨小区传输块映射。
可选地，在本发明实施例中，指示信息可以包括至少一个映射顺序列表，用于指示在应用了跨小区传输块映射的所述小区上的分块映射顺序。
在本发明实施例中，接入网设备可以通过高层控制信令，例如：无线资源控制(Radio Resource Control，RRC)消息，媒体接入控制(MAC)层控制单元(control element，CE)消息等向用户设备发送第一配置信息，即高层控制信令半静态配置第一配置信息；接入网还可以通过物理层控制信令，例如物理下行控制信道(Physical Downlink Control Channel，PDCCH)携带下行控制消息(Downlink Control Information，DCI)向用户设备发送第一 配置信息。若接入网设备通过高层控制信令向用户设备发送第一配置信息，则第一配置信息包括的指示信息可以指示在所有激活态的小区上应用跨小区传输块映射。在本发明实施例中，第一配置信息还可以包括阈值参数，以便于用户设备接收到第一配置信息后，根据第一配置信息中的指示信息和阈值参数确定用于跨小区传输块映射的小区集合。
例如：若激活态的小区数量小于阈值参数N，则在所有激活态的小区上应用跨小区传输块映射。
若激活态的小区数量大于阈值参数N，则在所有激活态的小区中选择N个激活态的小区，在选择的N个激活态的小区上应用跨小区传输块映射。
N个激活态的小区可以预先配置，例如当激活态的小区数量大于阈值参数N时，配置在小区索引号较小的N个激活态的小区上应用跨小区传输块映射；或者，配置在小区索引号较大的N个激活态的小区上应用跨小区传输块映射；或者配置从某一小区索引号开始的N个连续的激活态的小区，在该N个连续激活态的小区上应用跨小区传输块映射。
在本发明实施例中，在本发明实施例中，至少一个小区索引列表可以如列表1和列表2所示，指示在小区索引所对应的小区上应用跨小区传输块映射。以便于用户设备接收到第一配置信息后，根据第一配置信息选取用于跨小区传输块映射的小区集合。
需要说明的是，每个小区的数据，可以被映射在小区对应的载波上进行数据传输。因此，用户设备根据第一配置信息选取用于跨小区传输块映射的小区集合，也可以称为载波集合。
列表1
小区索引3
小区索引2
小区索引1
列表2
小区索引4
小区索引5
如列表1和列表2所示，第一配置信息包括两个小区索引列表，列表1指示在小区索引1、小区索引2、小区索引3对应的小区上应用跨小区传输块映射，列表2指示在小区索引4、小区索引5对应的小区上应用跨小区传输块映射。
在本发明实施例中，列表1和列表2也可以表示两个分块映射顺序列表，列表1指示分块映射顺序为第一分块映射到小区索引3对应的小区上，第二分块映射到小区索引2对应的小区上，第三分块映射到小区索引1对应的小区上。列表2指示分块映射顺序为第一分块映射到小区索引4对应的小区上，第二分块映射到小区索引5对应的小区上。
另外，在本发明实施例中，小区索引列表和映射顺序列表还可以为同一个列表，如列表3和列表4所示。
列表3
应用跨小区传输块映射的小区 分块映射顺序
小区索引3对应的小区 第一分块映射
小区索引2对应的小区 第二分块映射
小区索引1对应的小区 第三分块映射
列表4
应用跨小区传输块映射的小区 分块映射顺序
小区索引4对应的小区 第一分块映射
小区索引5对应的小区 第二分块映射
需要说明的是，在本发明实施例中，不限定小区索引列表和映射顺序列表的具体形式。
依列表1为例，本发明实施例提供的跨小区传输块映射的方法，对下行而言，UE接收到第一配置信息后，将在小区索引3对应的第一小区、小区索引2对应的第二小区、小区索引1对应的第三小区上接收下行数据，按照列表1指示的顺序合并后，形成一个完整的传输块，再执行物理层的解码、校验等操作。
对上行而言，UE接收到第一配置信息后，按照小区索引3对应的第一小区、小区索引2对应的第二小区和小区索引1对应的第三小区的上行调度资源的总的大小，生成一个上行传输块，执行物理层的编码、调制等操作后，按照分块映射顺序，分割成三个分块后，分别在第一、第二、第三小区的上行调度资源上发送。
一个上行传输块可能是由MAC层产生一个MAC PDU来实现，也可以由MAC产生多个MAC PDU，再由物理层进行合并后来实现。
若接入网设备通过物理层控制信令向用户设备发送第一配置信息，则第一配置信息包括的指示信息可以为指示在物理层控制信令指示的调度资源对应的小区上应用跨小区传输块映射。
在本发明实施例中，指示信息用于指示在调度资源对应的小区上应用跨小区传输块映射。
可选地，在本发明的另一实施例中，指示信息还可以为分组索引号，指示调度资源所对应的小区所属的分组。其中，一个分组可以包括至少一个小区。该分组索引号用于指示在分组包括的至少一个小区应用跨小区传输块映射。
可选地，在本发明的一个实施例中，分组索引号可以为一个小区索引。这个分组索引号对应的小区可以成为这个分组的锚点小区。锚点小区也可以称为HARQ实体的位置，或称为锚点HARQ实体的位置，即锚点HARQ实体所在的小区。
可选地，在本发明实施例中，指示信息还可以为第一分块序号，用于指示在物理层控制信令指示的调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
可选地，在本发明的一个实施例中，指示信息还可以包括分块的总数，即一共有多少个分块，以避免一个或者多个物理层控制信令丢失的情况。
或者，第指示信息可以包括是否为最后一个分块的指示信息，由于最后一个分块的分块序号正好可以表明一共有多少个分块，以避免一个或者多个物理层控制信令丢失的情况。
可选地，本发明中应用了跨小区传输块映射的小区，可能使用相同的空口格式numerology，也可以使用不同空口格式。
S220，用户设备根据指示信息确定应用跨小区传输块映射的小区，和在应用了跨小区传输块映射的小区上的分块映射顺序。
当用户设备接收到接入网设备发送的第一配置信息后，根据第一配置信息中的指示信息确定应用跨小区传输块映射的小区以及在应用的跨小区传输块映射的小区上的分块映射顺序。
若用户设备需要传输上行数据，则根据采用跨小区传输块映射的小区的上行调度资源总的大小，生成一个上行传输块，执行物理层的编码、调制等操作后，按照应用了跨小区传输块映射的小区上的分块映射顺序进行分块，并在每个小区的上行资源上根据分块映射顺序分别发送上行传输块的分块。
若进行数据重传时，则不用重新生成传输块，使用前一次传输时的传输块进行数据传输。
若用户设备接收到下行数据，则按照在小区上的分块映射顺序接收到的分块的下行数据进行合并，形成一个完整的传输块，再执行物理层的解码、校验等操作。
采用本发明实施例提供的跨小区传输块的映射方法，实现了跨小区的分块的数据传输。
可选地，在本发明的一个实施例中，如图5所示，该方法还可以包括：
S230，接入网设备向用户设备发送的第二配置信息，该第二配置信息可以包括HARQ实体信息。
该HARQ实体信息用于指示应用了跨小区传输块映射进行数据重传的混合自动重传请求HARQ实体，以及进行数据重传所采用的进程等信息。
接入网设备向用户设备发送第二配置信息，第二配置信息包括HARQ实体信息。接入网设备发送的第二配置信息可以具体为如图6和图7所示。
图6为本发明实施例提供的一种物理层控制信令的格式示意图；图7为本发明实施例提供的另一种物理层控制信令的格式示意图。
物理层控制信令可以指示多个小区上的传输资源。如图6所示，指示在小区(载波)一和小区二上进行跨小区传输块映射。其中，锚点小区为小区一，锚点HARQ实体位于小区一上，使用HARQ进程3。小区二上的HARQ进程号为5，表示使用小区二上的HARQ实体的HARQ进程5。若没有小区二上的HARQ进程号，则表示不使用小区二上的HARQ进程。可以采用多个物理层控制信令，分别指示对应小区上的传输资源。如图7所示，指示在小区一和小区二上进行跨小区传输块映射。其中，锚点小区为小区一，HARQ实体位于小区一上，使用HARQ进程3。小区二上的HARQ进程号为5，表示使用HARQ进程5。若没有小区二上的HARQ进程号，则表示不使用小区二上的HARQ进程。
S240，用户设备根据第二配置信息确定HARQ实体信息。
当用户设备与接入网设备之间采用跨小区传输的传输块映射方法传输数据时，可能有些数据包会传送失败，或者需要重新传输，则用户设备需要确定重传数据所在的HARQ实体的位置，以及采用的进程，以便于用于设备接收到重传数据时，将重新接收到的数据与之前接收到的数据进行合并。
需要说明的是，一个HARQ实体可以有多个HARQ进程，每个传输块占用一个HARQ进程，每个HARQ进程可以通过进程号来标记，这样也就可以通过进程号确定哪些传输块可以进行HARQ合并。
传统的技术中，也就是不进行跨小区传输块映射时，每个小区采用各自的HARQ实体， 以及各自的HARQ进程的进程号进行数据传输。
在本发明实施例提供的跨小区传输块映射的方法中，多个小区传输同一个传输块的分块，假设小区1和小区2都传输下行传输块1的分块，那么指示重传的PDCCH通过指示HARQ进程号来指示重传数据包和初传数据包属于同一个传输块，比如，若指示的HARQ进程号为3，则用户设备在小区1和小区2上接收到HARQ进程号为3的重传数据包时，将该数据包与初传的HARQ进程号为3的数据包进行HARQ合并。
在本发明实施例中，还可以通过高层控制信令指示HARQ实体的位置。
当高层控制信令和物理层控制信令都没有指明分块映射顺序和HARQ实体的位置时，使用默认的分块映射顺序和HARQ实体的位置，例如，HARQ实体的位置位于第一分块所在的小区上等。
默认的分块顺序和HARQ实体的位置可以自定义，在本发明实施例中对此不作限定。需要说明的是，本发明实施例提供的跨小区传输块映射的方法中的接入设备向用户设备发送的第一配置信息、第二配置信息可以被包括在一条高层控制信令或者物理层控制信令。在本发明实施例中，第一配置信息中的指示信息也可以通过两条高层控制信令或者物理层控制信令发送。在本发明实施例中对第一配置信息、第二配置信息发送的具体形式不作限定。
S250，接入网设备向用户设备发送第三配置信息，该第三配置信息可以包括第二分块号或第二小区索引号。
第二分块号或者第二小区索引号用于指示HARQ反馈的位置信息。
HARQ反馈位置是用户设备用来确定混合自动重传请求的ACK/NACK反馈在物理上行链路控制信道(Physical Uplink Control Channel，PUCCH)上的具体时频位置，即时域位置和频域位置。
在LTE中，ACK/NACK反馈的位置是根据调度对应下行数据包的PDCCH信令的位置确定的，但在本发明实施例中，每个小区上的分块由各自的PDCCH分别调度，则需要选择其中一个PDCCH来确定ACK/NACK反馈的位置。
S260，用户设备根据第二分块号或者第三小区索引号确定HARQ反馈的位置信息。
采用本发明实施例提供的方案便于用户设备根据确定的接收重传数据的时频位置，并在时频位置上接收重传数据，结合确定的HARQ实体位置，将接收到的重传数据与初传的数据进行HARQ合并。
可选地，在本发明的一个实施例中，第三配置信息还可以包括打孔传输信息，用于指示在应用跨小区传输块映射的传输块上进行打孔传输时，在传输快上打孔的方式。
在本发明实施例中，可以在整个传输块的分块上进行打孔传输，也可以在传输块的部分分块上进行打孔传输。
例如，在传输块的某一个或者多个分块上进行打孔传输可以采用打孔传输信息包括的至少一个第三分块号或者至少一个第三小区索引号来指示在至少一个第三分块号或者至少一个第三小区索引号对应的分块上打孔，并进行打孔传输。
用户设备接收到第三配置信息。当用户设备有ACK/NACK需要反馈，又有上行数据需要传输，且用户设备不支持同时传输PUCCH和PUSCH，那么用户设备就需要进行打孔传输，将PUCCH的内容嵌入到PUSCH中，用户设备根据第三配置信息中的打孔传输信息的指示确 定打孔传输的打孔方式。在本发明实施例中，用户设备可以根据打孔传输信息包括的至少一个第三分块号和至少一个第三小区索引号确定在哪些分块上进行打孔，并进行数据传输。
采用本发明实施例提供的跨小区传输块映射的方法，通过高层控制信令或者物理控制信令配置应用跨小区传输块映射的小区，分块映射顺序以及HARQ实体的位置、HARQ反馈的位置，实现了跨小区传输块的传输。
需要说明的是，本发明实施例提供的跨小区传输块映射的方法中的接入设备向用户设备发送的第一配置信息、第二配置信息，或者第一配置信息、第二配置信息和第三配置信息可以被包括在一条高层控制信令或者物理层控制信令。在本发明实施例中，第一配置信息中用于指示应用跨小区传输块映射的小区和在应用了跨小区传输块映射的小区的分块映射顺序的指示信息，也可以通过两条高层控制信令或者物理层控制信令发送。在本发明实施例中对第一配置信息、第二配置信息，以及第三配置信息发送的具体形式不作限定。
下面依接入网设备分别向用户设备发送用于指示应用跨小区传输块映射的小区的指示信息，用于在应用了跨小区传输块映射的小区的分块映射顺序的指示信息，以及HARQ实体信息为例，对本发明实施例进行说明。
图8为本发明实施例提供的一种跨小区传输块映射的方法流程图。
图9为本发明实施例提供的另一种跨小区传输块映射的方法流程图。
其中，图8是通过高层控制信令半静态配置指示信息，HARQ实体的位置信息。图9是通过物理层控制信令配置指示信息和HARQ实体信息。
如图8所示，该跨小区传输块映射的方法可以包括以下步骤：
310，接入网设备向UE发送第一配置信息，该第一配置信息可以携带指示信息或至少一个小区索引列表。
指示信息用于指示在所有激活态的小区上应用跨小区传输块映射。
至少一个小区索引列表用于指示在小区索引列表包括的小区索引号所对应的小区上应用跨小区传输块映射。
可选地，在本发明实施例中，第一配置信息还可以携带参数N，当激活态的小区数量小于N时，指示在所有激活态的小区上应用跨小区传输块映射。
当激活态的小区数量大于N时，指示在其中N个激活态的小区上应用跨小区传输块映射。例如通过载波索引(或小区索引)来指示哪N个激活态的小区应用跨小区传输块映射，比如，小区索引号最小(或最大)的N个激活态的小区，或者从某一个索引开始的N个连续的激活态的小区。
S320，UE根据第一配置信息，选取用于跨小区传输块映射的载波集合。
S330，接入网设备向UE发送第二配置信息。
第二配置信息可以携带一个、两个或多个映射顺序列表，用于指示在被应用了跨小区传输块映射的载波上的分块映射顺序，具体可以参见图4中S210的描述，为简洁描述，在这里不再赘述。
S340，UE根据第二配置信息确定分块的映射顺序。
S350，接入网设备先UE发送第三配置信息。
第三配置信息可以携带小区索引号，用于指示当应用跨小区传输块映射时，传输块所对应的HARQ实体的位置。
S360，UE根据第三配置信息，确定HARQ实体的位置。
采用本发明实施例提供的跨小区传输块映射的方法，实现了高层控制信令半静态配置应用跨小区传输块映射的小区、分块映射顺序和HARQ实体的选择。
如图9所示，该跨小区传输块映射的方法可以包括以下步骤：
S410，接入网设备向UE发送第一配置信息，第一配置信息可以携带指示信息或分组索引号。
指示信息，用于指示在物理层控制信令指示的调度资源对应的载波上应用跨小区传输块映射。
分组索引号，用于指示所述物理层控制信令指示的调度资源所对应的小区所属的分组，对分组内所有的载波应用跨小区传输块映射。
其中，分组索引号可以是一个小区索引号，这个小区索引号对应的小区可以称为这个分组的锚点小区，即HARQ实体所在的位置。
S420，UE根据第一配置信息选取用于跨载波传输块映射的载波集。
S430，接入网设备向UE发送第二配置信息。
第二配置信息可以携带一个、两个或多个映射顺序列表，用于指示在被应用了跨小区传输块映射的小区上的分块映射顺序。
可选地，在本发明实施例中，第二配置信息可以携带分块序号，用于指示物理层控制信令指示的调度资源所对应的小区被应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
进一步的，第二配置信息还可以携带分块总数，用于指示一共有多少个分块，避免一个或多个物理层控制信令丢失的情况。
或者，第二配置信息还可以携带分块的最后一个分块序号，用于指示是否是最后一个分块。因为最后一个分块的分块序号正好表明一共有多少个分块，可以避免一个或多个物理层控制信令丢失的情况。
S440，UE根据第二配置信息，确定分块的映射顺序。
S450，接入网设备向UE发送的第三配置信息。
第三配置信息可以携带小区索引，用于指示当应用跨小区传输块映射时，传输块所对应的HARQ实体的位置。
第三配置信息还可以携带锚点HARQ进程信息，指示传输块使用的锚点HARQ进程号。
S460，UE根据第三配置信息，确定HARQ实体信息。
采用本发明实施例提供的跨载波传输块映射的方法，实现了物理层控制信令动态配置应用跨小区传输块映射的载波、分块映射顺序以及HARQ实体的信息。
在UE进行上行数据传输时，无论将一个传输块分割为多少个分块，只会接收到一个HARQ反馈，下面结合图10对本发明实施例提供的跨载波传输块HARQ反馈位置指示的方案进行详细描述。
图10为本发明实施例提供的一种跨载波传输块HARQ反馈位置指示的方法流程图，如图10所示，该方法可以包括以下步骤：
S510，接入网设备向用户设备发送配置信息，配置信息包括分块序号或小区索引号， 分块序号或小区索引号用于指示HARQ反馈的位置信息。
在本发明实施例中，分块号也可以称为调度分块号。HARQ反馈的位置信息根据调度分块号或小区索引号所对应的物理层控制信令的位置确定的。
或者说，用户设备接收接入网设备发送的配置信息，配置信息包括分块序号或小区索引号。
S520，用户设备根据分块序号或小区索引号确定HARQ反馈的位置信息。
在本发明实施例中，如果UE没有收到配置信息，那么使用默认的HARQ反馈位置。例如，根据调度第一分块的物理控制信令的位置确定HARQ反馈的位置，或根据调度HARQ实体所在的小区上的分块的物理控制信令的位置确定HARQ反馈的位置。
可选地，作为本本发明一个实施例中，如图10所示，配置信息还可以包括打孔传输信息，用于指示在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式，该方法还可以包括：
S530，在应用跨小区传输块映射的传输块上进行打孔传输时，用户设备根据打孔传输信息确定在传输块上打孔的方式。
在本发明实施例中，指示HARQ反馈如果需要在应用了跨小区传输块映射的传输块上打孔传输时，可以通过接入网设备配置的打孔传输信息指示在整个传输块上打孔，还是仅在某一个分块上打孔。在本发明实施例中，若在某一个分块上打孔，则可以通过分块序号或小区索引号来指示在哪一个分块上打孔。
在本发明实施例中，若UE没有收到配置信息中的打孔传输信息，则使用默认的打孔方式，例如在整个传输块上打孔、在第一个分块上打孔等。
如果UE收到配置中的打孔传输信息，指示仅在某一个分块上打孔，但没有携带分块序号或载波索引，则可以使用默认的分块，例如在第一个分块上打孔。
采用本发明实施例提供的跨载波传输块HARQ反馈位置指示的方法，确定了跨载波传输块映射中HARQ反馈所在的位置，HARQ打孔的位置。
采用本发明实施例提供的跨载波传输块映射的方法，通过高层控制信令和物理层控制信息配置用于支持跨载波传输块映射的载波，以完成跨载波传输块的数据传输。
但由于传统的MAC PDU格式，或者称为MAC PDU的数据结构中的MAC CE的MAC子头和媒体接入控制(Media Access Control，MAC)服务数据单元(Service Data Unit，SDU)的MAC子头都位于对应的MAC CE或MAC SDU的前面，如图11所示。
传统MAC PDU需要先放置MAC子头再放置MAC SDU，导致MAC SDU具体在MAC PDU中的位置不固定，需要MAC在收到一个逻辑信道的所有MAC SDU后，根据MAC SDU的个数，确定MAC SDU的MAC子头的长度，才能确定MAC SDU的位置，这样接收端接收到数据时，例如用户设备接收到接入网设备发送的下行数据，或者接入网设备接收到用户设备发送的上行数据后，只能先将MAC SDU放在额外的缓存(buffer)中，等确定了MAC SDU的MAC子头后，才能写入MAC SDU的buffer中，该两次写入，增加了处理时延。
本发明实施例针对传统MAC PDU数据结构的存在的问题，提出了一种新的MAC PDU格式，即MAC PDU数据结构。
MAC PDU可以包括MAC CE、MAC CE对应的MAC CE的MAC子头(subheader)、MAC SDU、MAC SDU对应的逻辑信道的MAC子头、填充位(Padding)和填充位的MAC子头。
其中，MAC PDU可以包括至少一个MAC CE，至少一个逻辑控制信道的至少一个MAC SDU，至少一个逻辑控制信道的MAC子头在本发明实施例中，MAC PDU可以称为传输块，也可能多个MAC PDU组成一个传输块。
MAC PDU的格式可以为：
属于同一逻辑信道的至少一个MAC SDU依次排列。属于至少一个逻辑信道中的第一逻辑信道的至少一个MAC SDU中的第一个MAC SDU与传输块中的最后一个MAC CE相邻，第一逻辑信道中的至少一个MAC SDU中的最后一个MAC SDU与对应的第一逻辑信道的MAC子头相邻；第一逻辑信道的MAC子头与属于至少一个逻辑信道中的第二逻辑信道的至少一个MAC SDU中的第一个MAC SDU相邻，例如图12(a)所示。
或者，属于同一逻辑信道的至少一个MAC SDU依次排列。属于至少一个逻辑信道中的第一逻辑信道的至少一个MAC SDU中的第一个MAC SDU与传输块中的最后一个MAC CE相邻，第一逻辑信道中的至少一个MAC SDU中的最后一个MAC SDU与属于至少一个逻辑信道中的第二逻辑信道的至少一个MAC SDU中的第一个MAC SDU相邻，属于至少一个逻辑信道中的最后一个逻辑信道的至少一个MAC SDU中的最后一个MAC SDU与依次排序的至少一个逻辑信道中的第一逻辑信道的MAC子头相邻，例如图12(b)所示。
在图12(a)和图12(b)中，假设传输块中包括n个逻辑信道，包括m个MAC CE，其中，m为正整数，n为正整数。所属逻辑信道1的MAC SDU可以包括MAC SDU1和MAC SDU2，所属逻辑信道2的MAC SDU可以包括MAC SDU1和MAC SDU2。传输块中的所属逻辑信道1中的MAC SDU1和MAC SDU2，以及所属逻辑信道2中的MAC SDU1和MAC SDU2依次排列。
如图12(a)所示，所属逻辑信道1中的最后一个MAC SDU，即MAC SDU2与逻辑信道的逻辑信道1的MAC子头相邻，逻辑信道1的MAC子头与所属逻辑信道2中的MAC SDU中的第一个MAC SDU相邻，即与所属逻辑信道2中的MAC SDU1相邻。
另外，所属逻辑信道1中的第一个MAC SDU，即MAC SDU1与传输块中的最后一个MAC CEn相邻。传输块中的最后一个逻辑信道n的MAC子头与填充位(Padding)相邻。
换句话讲，所属逻辑信道的至少一个MAC SDU中最后一个MAC SDU与所属信道的MAC子头相邻，该逻辑信道的MAC子头与所属另外一个逻辑信道的MAC SDU中的第一个MAC SDU相邻。
又如图12(b)所示，n个逻辑信道包括的MAC SDU依次排列。所属逻辑信道1的MAC SDU1和MAC SDU2排列完后，所属逻辑信道1的最后一个MAC SDU，即MAC SDU2与所属逻辑信道2的MAC SDU中的第一个MAC SDU，即MAC SDU1相邻，排列完所属n个逻辑信道包括的MAC SDU后，排列n个逻辑信道的MAC子头，即传输块中所属n个逻辑信道的最后一个逻辑信道中的最后一个MAC SDU与传输块中逻辑信道1相邻；传输块中的最后一个逻辑信道的MAC子头，即逻辑信道n的MAC子头与填充位(Padding)相邻。
传输块中的最后一个逻辑信道的MAC子头与填充位相邻，填充位与填充位的MAC子头相邻。
可选地，在本发明实施例中，MAC PDU还可以包括至少一个MAC CE的MAC子头。传输块的格式可以为：
至少一个MAC CE的MAC子头依次排列，并位于传输块的第一端，依次排列的至少一个MAC CE的MAC子头中的最后一个MAC CE的MAC子头与依次排列的至少一个MAC CE中 的第一个MAC CE相邻；或者，至少一个MAC CE与对应的至少一个MAC CE的MAC子头位于传输块的第一端，其中，至少一个MAC CE中的每个MAC CE与对应的MAC CE的MAC子头相邻，且位于对应MAC CE的MAC子头第一端。
例如图13(a)和图13(b)所示，MAC SDU1和MAC SDU2同属于逻辑信道1。首先将MAC层控制单元MAC CE及对应的MAC子头放在MAC PDU的最前端，每一个MAC CE对应的MAC子头位于该MAC CE的前面，如图13(a)所示；或者，所有的MAC CE的MAC子头按照MAC CE排列的顺序位于所有MAC CE的最前面，如图13(b)所示。将第一个MAC SDU紧挨着最后一个MAC CE放置，位于最后一个MAC CE的右侧，当一个逻辑信道的MAC SDU都放置好以后，这个逻辑信道对应的MAC子头紧接着最后一个该逻辑信道的MAC SDU放在该MAC SDU的右侧，如果还有其他逻辑信道的MAC SDU，则按照依次排列的规则顺序放置，先放该逻辑信道所有的MAC SDU，再放对应的逻辑信道的MAC子头。最后，如果有填充位padding，就先放填充位，最后放填充位对应的MAC子头。
又例如图14(a)和图14(b)所示，图14(a)和图14(b)为本发明实施例提供的另一种媒体接入控制协议数据单元数据结构示意图。图14(a)和图14(b)提供的MAC PDU格式与图12(a)和图12(b)提供的MAC PDU的格式互为反向放置数据。
如图14(a)和图14(b)所示，MAC SDU1和MAC SDU2同属于逻辑信道1。相对图13(a)和图13(b)反向放置数据。首先将MAC层控制单元MAC CE及对应的MAC子头放在MAC PDU的最后。MAC CE位于对应的MAC子头的前面，如图14(a)所示；也可以是所有的MAC CE位于所有MAC CE的MAC子头最前面，如图14(b)所示。将第一个MAC SDU紧挨着最后一个MAC CE放置，位于最后一个MAC CE的左侧。当一个逻辑信道的MAC SDU都放置好以后，这个逻辑信道对应的MAC子头紧接着最后一个该逻辑信道的MAC SDU放在该MAC SDU的左侧。若还有其他逻辑信道的MAC SDU，则按照依次排列的规则顺序放置，先放该逻辑信道所有的MAC SDU，再放对应的MAC子头。最后，如果有填充位padding，就先放填充位，最后放填充位对应的MAC子头。
图13(a)和图13(b)提供的的MAC PDU数据结构示意图中，MAC SDU与逻辑信道的排列顺序为属于同一个逻辑信道的MAC SDU排列完之后，在其右侧放置对应逻辑信道的MAC子头。
图14(a)和图14(b)提供的的MAC PDU数据结构示意图中，MAC SDU与逻辑信道的排列顺序为属于同一个逻辑信道的MAC SDU排列完之后，在其左侧放置对应逻辑信道的MAC子头。
在本发明实施例中还提供了一种MAC PDU数据结构，如图15(a)和图15(b)所示，属于逻辑信道1的MAC SDU1、MAC SDU2排列完成后，放置逻辑信道2的MAC SDU1、MAC SDU2，在所有逻辑信道的MAC SDU排列完之后，依次排序逻辑信道1的MAC子头、逻辑信道2的MAC子头，所有逻辑信道的MAC子头排列完之后排列Padding。排列顺序图如15(a)和图15(b)所示。
采用本发明实施例提供的媒体接入控制协议数据单元数据结构，当接收端接收到数据时，例如用户设备接收到接入网设备发送的下行数据时，或者接入网设备接收到用户设备发送的上行数据时，接收端可以确定MAC SDU在MAC PDU中的位置，降低了解包MAC PDU的时延。
在本发明实施例中，解包MAC PDU时还可以从MAC PDU的两端分别开始对MAC CE和MAC SDU的解包，进一步降低解包MAC PDU的时延。
且发送端组成MAC PDU时，例如接入网设备对下行数据组成MAC PDU；或者用户设备对上行数据组成MAC PDU时，由于MAC SDU在MAC PDU中的位置是确定的，可以直接将MAC SDU写入MAC PDU中，提高了生成MAC PDU的速率。
可选地，在本发明实施例中，如图16至图19所示，图16为本发明实施例提供的一种媒体接入控制层控制单元的媒体接入控制子头的示意图；图17为本发明实施例提供的一种媒体接入控制服务数据单元的媒体接入控制子头的示意图；图18为本发明实施例提供的另一种媒体接入控制服务数据单元的媒体接入控制子头的示意图；图19为本发明实施例提供的一种填充位的媒体接入控制子头的示意图。
MAC CE的MAC子头、MAC SDU的MAC子头和填充位的MAC子头均包括逻辑信道标识(Logical channel idendity，LCID)。
如图16所示，MAC CE的MAC子头还可以包括第一指示位，即指示位E0，指示位E0用于指示是否为最后一个MAC CE。
例如，若指示位E0＝0，则表示MAC CE的MAC子头对应的MAC CE后面还有MAC CE。如图12(a)和图12(b)所示，若MAC CE1的MAC子头的指示位E0＝1，则表示MAC CE1的MAC子头对应的MAC CE1后面(或者相邻的右边)还有MAC CE2。
若指示位E0＝1，则表示MAC CE的MAC子头对应的MAC CE后面没有MAC CE了，而是MAC SDU。如图13(a)和图13(b)所示，若MAC CE2的MAC子头的指示位E0＝1，则表示MAC CE2的MAC子头对应的MAC CE2后面(或者相邻的右边)没有MAC CE3，而是MAC SDU。
如图17所示，在本发明实施例中，MAC SDU的MAC子头还包括每个MAC SDU的长度L、第二指示位E、第三指示位E0；第二指示位E用于指示所属信道的MAC SDU是否为最后一个；第三指示位E0用于指示是否为最后一个逻辑信道。
例如，若第三指示位E0＝0，则表示MAC SDU后面还有下一个逻辑信道的MAC子头和MAC SDU。例如图13(a)和图13(b)所示，若MAC SDU1的第三指示位E0＝0，则表示MAC SDU1后面还有逻辑信道2的MAC子头和MAC SDU2。
若第三指示位E0＝1，则表示MAC SDU后面没有下一个逻辑信道的MAC子头和MAC SDU了，而是填充位。例如图13(a)和图13(b)所示，若MAC SDU2的第三指示位E0＝1，则表示MAC SDU2后面还有逻辑信道3的MAC子头和MAC SDU3，而是填充位。
另外，若传输块中只包括一个逻辑信道时，则逻辑信道的MAC子头中不包括LCID；若传输块包括两个或者两个以上的逻辑信道时，逻辑信道的MAC子头中包括LCID。
可选地，在本发明的另一个实施例中，若传输块中的至少一个逻辑信道中的第一逻辑信道上的数据不与至少一个逻辑信道中除第一逻辑信道之外的至少一个第二逻辑信道复用，则第一逻辑信道的MAC SDU的MAC子头包括每个MAC SDU的长度。
当某一逻辑信道上的数据不和其他逻辑信道上的数据做复用的时，如图18所示，该逻辑信道的MAC子可以不包括逻辑信道标识，也可以没有指示位E0，只有长度L，用于指示每一个MAC SDU的长度。
本发明实施例提供的媒体接入控制服务数据单元的媒体接入控制子头，相对现有技术考虑到了逻辑信道不做复用的情况，减少了逻辑信道的MAC子头的内容，提高了资源的利 用率。
如图19所示，填充位的MAC子头还包括填充位的长度。
采用本发明实施例提供的媒体接入控制协议数据单元数据结构，实现了MAC SDU位置的提前确定。当接收端接收到MAC SDU时，可以确定MAC SDU在MAC PDU中的位置，降低了解包MAC PDU的时延。
上文图4至图11详细描述了跨载波传输块映射的方法，以及图12(a)、图12(b)至图19详细描述了MAC PDU数据结构，下面结合图20和图21对本发明实施例提供的接入网设备和用户设备进行详细描述。
图20为本发明实施例提供的一种接入网设备。如图20所示，该接入网设备可以包括发送单元610。
发送单元610，用于向用户设备发送第一配置信息，第一配置信息包括指示信息。
指示信息用于指示应用跨小区传输块映射的小区和在应用了跨小区传输块映射的小区上的分块映射顺序。
本发明实施例提供的接入网设备可以通过高层控制信令或者物理层控制信令向用户设备发送第一配置信息，以指示应用跨小区传输块映射的小区，和应用跨小区传输块映射小区的分块顺序，实现了跨小区传输块的数据传输。
可选地，在本发明的另一实施例中，指示信息用于指示在所有激活态的小区上应用跨小区传输块映射。
可选地，在本发明实施例中，第一配置信息还可以包括阈值参数。通过指示信息和阈值参数指示应用跨小区传输块映射的小区。
例如，若激活态的小区数量小于阈值参数，则在所有激活态的小区上应用跨小区传输块映射。
若激活态的小区数量大于阈值参数，则在所有激活态的小区中的部分激活态的小区上应用跨小区传输块映射。
可选地，在本发明的一个实施例中，指示信息可以包括至少一个小区索引列表，每个小区索引列表包括至少一个第一小区索引号；小区索引列表用于指示在至少一个第一小区索引号对应的小区上应用跨小区传输块映射。
通过至少一个小区索引列表可以指示激活态的小区中的部分载波对应的小区应用跨小区传输块映射。
可选地，在本发明的另一实施例中，若接入网设备通过物理层控制信令向用户设备发送第一配置信息，则第一配置信息中的指示信息可以包括分组索引号，分组索引号指示调度资源所对应的小区所属的分组，分组包括至少一个小区。分组索引号，用于指示在分组包括的至少一个小区应用跨小区传输块映射。
可选地，在本发明的一个实施例中，指示信息用于指示在物理层控制信令指示的调度资源对应的小区上应用跨小区传输块映射。
可选地，接入网通过高层控制信令或者物理层控制信令向用户设备发送的第一配置信息中用于指示指示应用了跨小区传输块映射的小区的分块映射顺序的指示信息均可以为至少一个映射顺序列表。
可选地，在本发明的另一实施例中，指示信息可以包括第一分块号，用于指示在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
另外，在数据传输过程中会存在数据重传的问题。在不采用跨小区传输块映射时，每个小区都使用各自的HARQ实体，使用各自的HARQ进程的进程号，但采用本发明实施例提供的应用跨小区传输块映射的方法进行数据传输，多个小区传输同一个传输块的分块，则需要确定HARQ实体的位置，即锚点小区。
可选地，在本发明实施例中，接入网设备的发送单元610，还用于向用户设备发送第二配置信息，第二配置信息包括混合自动重传请求HARQ实体信息，用于指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体，以及进行数据重传所采用的HARQ进程。
可选地，在本发明实施例中，发送单元610，还用于向用户设备发送第三配置信息，第三配置信息包括第二分块号或第二小区索引号，第二分块号或者第二小区索引号用于指示混合自动重传请求HARQ反馈的位置信息。
通过本发明实施例提供的接入网设备，通过高层控制信令或者物理层控制信令配置应用跨小区传输块映射的小区，应用了跨小区传输块映射的小区的分块映射顺序，以及HARQ实体及其进程号，实现了跨小区传输块映射的数据传输。
可选地，在本发明的一个实施例中，当采用跨小区传输块数据传输过程中，需要采用打孔的方式进行数据传输时，第三配置信息还包括打孔传输信息，用于指示在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式。
在本发明实施例中，在传输块上打孔的方式可以包括：在整个传输块上打孔；或者在传输块的分块上打孔。
若在某一个或者多个传输块的分块上进行打孔传输时，可以在打孔传输信息中携带至少一个第三分块号或至少一个第三小区索引号，以指示在至少一个第三分块号或至少一个第三小区索引号对应的分块上打孔。
需要说明的是，在本发明实施例中，接入网设备可以通过高层控制信令或物理层控制信令分别配置第一配置信息中的用于指示应用跨小区传输块映射的小区，以及应用了跨小区传输块映射的小区的分块映射顺序的指示信息。在本发明实施例中，第一配置信息和第二配置信息，或者第一配置信息，第二配置信息，以及第三配置信息也可以通过同一条高层控制信令或者物理层控制信令进行配置，在本发明实施例中对此不作限制。
还需说明的是，在本发明实施例提供的接入网设备中，除包括发送单元610之外，还可以包括接收单元620，用于接收其他设备，例如用户设备发送的数据。接入网设备还可以包括处理单元630，用于处理对接收到的数据进行处理，例如，对接收到的用户设备采用跨小区传输块映射发送的数据进行解包等处理，等等。
在本发明实施例中，发送单元610可以为发送器，处理单元630可以为处理器，接收单元620可以为接收器。
除此之外，本发明实施例还提供了一种媒体接入控制协议数据单元数据结构。在本发明实施例中，媒体接入控制协议数据单元可以称为传输块，传输块可以包括至少一个媒体接入控制层控制单元MAC CE，至少一个MAC CE对应的至少一个MAC CE的媒体接入控制MAC子头，属于至少一个逻辑信道的至少一个媒体接入控制服务数据单元MAC SDU，至少 一个MAC SDU对应的至少一个逻辑控制信道的媒体接入控制MAC子头、填充位和填充位的MAC子头。
例如：传输块的格式为：至少一个MAC CE的MAC子头依次排列，并位于传输块的第一端，依次排列的至少一个MAC CE的MAC子头中的最后一个MAC CE的MAC子头与依次排列的至少一个MAC CE中的第一个MAC CE相邻，如图13(a)所示。
或者，至少一个MAC CE与对应的至少一个MAC CE的MAC子头位于传输块的第一端，其中，至少一个MAC CE中的每个MAC CE与对应的MAC CE的MAC子头相邻，且位于对应MAC CE的MAC子头第一端，如图13(b)所示。
属于同一逻辑信道的至少一个MAC SDU依次排列。属于至少一个逻辑信道中的第一逻辑信道的至少一个MAC SDU中的第一个MAC SDU与传输块中的最后一个MAC CE相邻，第一逻辑信道中的至少一个MAC SDU中的最后一个MAC SDU与对应的第一逻辑信道的MAC子头相邻；第一逻辑信道的MAC子头与属于至少一个逻辑信道中的第二逻辑信道的至少一个MAC SDU中的第一个MAC SDU相邻如图13(a)和图13(b)或者图14(a)和图14(b)所示。
或者，属于同一逻辑信道的至少一个MAC SDU依次排列。属于至少一个逻辑信道中的第一逻辑信道的至少一个MAC SDU中的第一个MAC SDU与传输块中的最后一个MAC CE相邻，第一逻辑信道中的至少一个MAC SDU中的最后一个MAC SDU与属于至少一个逻辑信道中的第二逻辑信道的至少一个MAC SDU中的第一个MAC SDU相邻，属于至少一个逻辑信道中的最后一个逻辑信道的至少一个MAC SDU中的最后一个MAC SDU与依次排序的至少一个逻辑信道中的第一逻辑信道的MAC子头相邻，如图15(a)和图15(b)所示。
如图13(a)、图13(b)、图(a)、图14(b)图15(a)和图15(b)所示，传输块中的最后一个逻辑信道的MAC子头与填充位相邻，填充位与填充位的MAC子头相邻。
采用本发明实施例提供的媒体接入控制协议数据单元数据结构，相对传统的媒体接入控制协议数据单元数据结构中是先放置MAC子头再放置MAC SDU，减少了处理时延。
由于传统的媒体接入控制协议数据单元数据结构，只能在收到一个逻辑信道的所有MAC SDU后，才能确定MAC SDU的位置，因此，需要将在先接收到的MAC SDU放在额外的缓存(buffer)中，确定了MAC SDU的MAC子头后，才能写入MAC SDU的buffer中，两次写入，增加了处理时延。
而本发明实施例提供的媒体接入控制协议数据单元数据结构，当接收端接收到数据时，例如用户设备接收到接入网设备发送的下行数据时，或者接入网设备接收到用户设备发送的上行数据时，接收端可以确定MAC SDU在MAC PDU中的位置，降低了解包MAC PDU的时延。
可选地，在本发明实施例中，每个MAC CE的MAC子头、每个逻辑信道的MAC子头和填充位的MAC子头均包括逻辑信道标识。
每个MAC CE的MAC子头还包括第一指示位，第一指示位用于指示是否为最后一个MAC CE。
每个逻辑信道的MAC子头还包括属于对应逻辑信道的至少一个MAC SDU中每个MAC SDU的长度、第二指示位、第三指示位；第二指示位用于指示所属信道的MAC SDU是否为最后一个；第三指示位用于指示是否为传输块的最后一个逻辑信道。
填充位的MAC子头还包括填充位的长度。
可选地，若传输块中的至少一个逻辑信道中的某一逻辑信道上的数据不与其他逻辑信道上的数据复用，则该逻辑信道的MAC子头包括属于该逻辑信道的至少一个MAC SDU中每个MAC SDU的长度和第四指示位。
图21为本发明实施例提供的一种用户设备。如图21所示，该用户设备可以包括接收单元710和处理单元720。
接收单元710，用于接收接入网发送的第一配置信息，第一配置信息包括指示信息。
处理单元，用于根据指示信息确定应用跨小区传输块映射的小区和在应用了跨小区传输块映射的小区上的分块映射顺序。
本发明实施例提供的用户设备接收接入网设备通过高层控制信令或者物理层控制信令发送的第一配置信息，并根据第一配置信息确定应用跨小区传输块映射的小区，和应用跨小区传输块映射小区的分块顺序，实现了跨小区传输块的数据传输。
可选地，在本发明的另一实施例中，处理单元720根据指示信息确定应用跨小区传输块映射的小区，包括：
处理单元720根据指示信息确定在激活态的小区上应用跨小区传输块映射。
可选地，在本发明实施例中，第一配置信息还可以包括阈值参数，处理单元720根据指示信息确定应用跨小区传输块映射的小区，可以包括：
处理单元720根据指示信息和阈值参数确定应用跨小区传输块映射的小区。
例如：若激活态的小区数量小于阈值参数，则用户设备在所有激活态的小区上应用跨小区传输块映射。
若激活态的小区数量大于阈值参数，则用户设备在所有激活态的小区中的部分激活态的小区上应用跨小区传输块映射。
可选地，在本发明的另一实施例中，指示信息包括至少一个小区索引列表，每个小区索引列表包括至少一个第一小区索引号；处理单元根据指示信息确定应用跨小区传输块映射的小区，包括：
处理单元根据指示信息，确定在至少一个第一小区索引号对应的小区上应用跨小区传输块映射。在本发明实施例中，可以通过至少一个小区索引列表指示激活态的小区中的部分载波对应的小区应用跨小区传输块映射。
可选地，在本发明的另一实施例中，指示信息包括分组索引号，分组索引号指示调度资源所对应的小区所属的分组，分组包括至少一个小区。处理单元720根据指示信息确定应用跨小区传输块映射的小区，可以包括：
处理单元720根据分组索引号确定在分组包括的至少一个小区应用跨小区传输块映射。
可选地，在本发明的一个实施例中，处理单元720根据指示信息确定应用跨小区传输块映射的小区，可以包括：
处理单元720根据指示信息确定在调度资源对应的小区上应用跨小区传输块映射。
可选地，在本发明的一个实施例中，接收单元710到的指示信息可以为至少一个映射顺序列表，用于指示应用了跨小区传输块映射的分块映射顺序。
可选地，在本发明的另一实施例中，指示信息包括第一分块号，处理单元720根据指 示信息确定在应用了跨小区传输块映射的小区上的分块映射顺序，包括：
处理单元720根据第一分块号确定在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
可选地，在本发明实施例中，接收单元710，还用于接收接入网设备发送的第二配置信息，第二配置信息包括混合自动重传请求HARQ实体信息。
处理单元720，还用于根据第二配置信息确定应用了跨小区传输块映射进行数据重传的混合自动重传请求HARQ实体，以及进行数据重传所采用的HARQ进程。
可选地，在本发明实施例中，接收单元，还用于接收接入网设备发送的第三配置信息，第三配置信息包括第二分块号或第二小区索引号。
处理单元720，还用于根据第三配置信息确定混合自动重传请求HARQ反馈的位置信息。
通过本发明实施例提供的用户设备，接收接入网设备通过高层控制信令或者物理层控制信令配置应用跨小区传输块映射的小区，应用了跨小区传输块映射的小区的分块映射顺序，以及HARQ实体及其进程号，根据接入网设备发送的配置信息确定应用跨小区传输块映射的小区，应用了跨小区传输块映射的小区的分块映射顺序，以及HARQ实体及其进程号，并按照确定的信息进行数据传输，实现了跨小区传输块映射的数据传输。
可选地，在本发明的一个实施例中，第三配置信息还包括打孔传输信息。
处理单元720根据打孔传输信息确定在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式。
在传输块上打孔的方式包括：在整个传输块上打孔；或者在传输块的分块上打孔。
打孔传输信息包括至少一个第三分块号或至少一个第三小区索引号，处理单元720在传输快的分块上打孔，包括：
处理单元720根据至少一个第三分块号或至少一个第三小区索引号确定在至少一个第三分块号或至少一个第三小区索引号对应的分块上打孔。
当采用跨小区传输块数据传输过程中，需要采用打孔的方式进行数据传输时，处理单元720根据确定的打孔方式进行打孔并进行数据传输。
需要说明的是，在本发明实施例中，用户可以分别接收接入网设备通过高层控制信令或物理层控制信令分别配置第一配置信息中用于指示应用跨小区传输块映射的小区和应用了跨小区传输块映射的小区的分块映射顺序的指示信息。在本发明实施例中，用户设备也可以接收接入网设备通过同一条高层控制信令或者物理层控制信令配置的第一配置信息和第二配置信息，在本发明实施例中对此不作限制。
还需要说明的是，在本发明实施例提供的用户设备中，除包括接收单元710和处理单元720之外，还可以包括发送单元730，用于向其他设备，例如接入网设备发送数据。
在本发明实施例中，接收单元710可以为接收器；处理单元720可以为处理器；发送单元730可以为发送器。
可选地，在本发明的一个实施例中，传输块包括至少一个媒体接入控制层控制单元MAC CE，至少一个MAC CE对应的至少一个MAC CE的媒体接入控制MAC子头，属于至少一个逻辑信道的至少一个媒体接入控制服务数据单元MAC SDU，至少一个MAC SDU对应的至少一个逻辑控制信道的媒体接入控制MAC子头、填充位和填充位的MAC子头。
传输块的格式可以为：至少一个MAC CE的MAC子头依次排列，并位于传输块的第一 端，依次排列的至少一个MAC CE的MAC子头中的最后一个MAC CE的MAC子头与依次排列的至少一个MAC CE中的第一个MAC CE相邻，如图13(a)所示。
或者，至少一个MAC CE与对应的至少一个MAC CE的MAC子头位于传输块的第一端，其中，至少一个MAC CE中的每个MAC CE与对应的MAC CE的MAC子头相邻，且位于对应MAC CE的MAC子头第一端，如图13(b)所示。
属于同一逻辑信道的至少一个MAC SDU依次排列。属于至少一个逻辑信道中的第一逻辑信道的至少一个MAC SDU中的第一个MAC SDU与传输块中的最后一个MAC CE相邻，第一逻辑信道中的至少一个MAC SDU中的最后一个MAC SDU与对应的第一逻辑信道的MAC子头相邻；第一逻辑信道的MAC子头与属于至少一个逻辑信道中的第二逻辑信道的至少一个MAC SDU中的第一个MAC SDU相邻，如图13(a)和图13(b)和图14(a)和图14(b)所示。
或者，属于同一逻辑信道的至少一个MAC SDU依次排列。属于至少一个逻辑信道中的第一逻辑信道的至少一个MAC SDU中的第一个MAC SDU与传输块中的最后一个MAC CE相邻，第一逻辑信道中的至少一个MAC SDU中的最后一个MAC SDU与属于至少一个逻辑信道中的第二逻辑信道的至少一个MAC SDU中的第一个MAC SDU相邻，属于至少一个逻辑信道中的最后一个逻辑信道的至少一个MAC SDU中的最后一个MAC SDU与依次排序的至少一个逻辑信道中的第一逻辑信道的MAC子头相邻，如图14(a)和图14(b)所示。
传输块中的最后一个逻辑信道的MAC子头与填充位相邻，填充位与填充位的MAC子头相邻，如图13(a)、图13(b)、图14(a)、图14(b)、图15(a)和图15(b)所示。
在本发明实施例中，每个MAC CE的MAC子头、每个逻辑信道的MAC子头和填充位的MAC子头均包括逻辑信道标识，如图16至图18所示。
每个MAC CE的MAC子头还包括第一指示位，第一指示位用于指示是否为最后一个MAC CE，如图16所示。
每个逻辑信道的MAC子头还包括属于对应逻辑信道的至少一个MAC SDU中每个MAC SDU的长度、第二指示位、第三指示位；第二指示位用于指示所属信道的MAC SDU是否为最后一个；第三指示位用于指示是否为传输块的最后一个逻辑信道，如图17所示。
填充位的MAC子头还包括填充位的长度，如图18所示。
可选地，在本发明的另一实施例中，若传输块中的至少一个逻辑信道中的第三逻辑信道上的数据不与至少一个逻辑信道中除第三逻辑信道之外的至少一个第四逻辑信道上的数据复用，则第三逻辑信道的MAC子头包括属于第三逻辑信道的至少一个MAC SDU中每个MAC SDU的长度和第四指示位，如图19所示。在LTE通信中，无线链路控制层(radio link control，RLC)协议先保留数据包，等接收到基站发送的上行调度授权后，RLC层将确定数量的数据包发送的MAC层，然后MAC层将该数据包与其他的逻辑信道进行复用。
在新空口(new radio，NR)通信中，为了提前能够让MAC层解包，如图12(a)和图12(b)至19所示的数据结构的数据包，RLC层先将PDU数据包发送到MAC层，但RLC层保留所发送的数据包的备份数据。因为RLC层发送给MAC层的数据，这些数据并不一定是MAC层都需要的数据，或者说，RLC层发送个MAC层很多数据，但MAC层可能不需要这么多数据，且RLC层发送给MAC层中的数据可能还需要分段(segmentation)处理，分段处理还是需要在RLC层执行的，比如最后一个PDU大于剩余的资源大小，RLC就把PDU进行分段，MAC当前就只使用第一段，剩下的下一次有资源了再发送，所以RLC层发送给MAC层的数 据需要在RLC层备份。
BSR(Buffer Status Report，缓冲状态报告)是告诉基站当前时刻有多少数据需要发送，以便于基站根据缓冲状态报告确定分配上行资源。在BSR计算时，需要把从MAC层到PDCP层所有待发送的数据包都加起来计算一个总和，并将计算的总和上报给基站。这就相当于，RLC层把数据发送给MAC层，BSR计算对RLC层备份的数据也进行了计算，也就是进行了两个计算。
在本发明实施例中，若RLC层没有收到上行调度授权，则就把RLC PDU发送给MAC层，但自己又留有备份的情况下，BSR(缓冲区状态报告)计算时不计算备份的部分的数据。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (28)

  1. 一种跨小区传输块映射的方法，其特征在于，所述方法包括：
    接入网设备向用户设备发送第一配置信息，所述第一配置信息包括指示信息；
    所述指示信息用于指示应用跨小区传输块映射的小区和在应用了跨小区传输块映射的所述小区上的分块映射顺序。
  2. 根据权利要求1所述的方法，其特征在于，所述指示信息包括至少一个小区索引列表，每个所述小区索引列表包括至少一个第一小区索引号；所述小区索引列表用于指示在所述至少一个第一小区索引号对应的小区上应用跨小区传输块映射。
  3. 根据权利要求1所述的方法，其特征在于，所述指示信息包括分组索引号，所述分组索引号用于表示调度资源所对应的小区所属的分组，所述分组包括至少一个小区；
    所述分组索引号，用于指示在所述分组包括的至少一个小区应用跨小区传输块映射。
  4. 根据权利要求1或3所述的方法，其特征在于，所述指示信息包括第一分块号，用于指示在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述方法还包括：
    所述接入网设备向所述用户设备发送第二配置信息，所述第二配置信息包括混合自动重传请求HARQ实体信息，用于指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体；或者，指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体，以及进行数据重传所采用的混合自动重传请求HARQ进程。
  6. 根据权利5所述的方法，其特征在于，所述方法还包括：
    所述接入网设备向所述用户设备发送第三配置信息，所述第三配置信息包括第二分块号或第二小区索引号，所述第二分块号或者第二小区索引号用于指示混合自动重传请求HARQ反馈的位置信息。
  7. 根据权利要求6所述的方法，其特征在于，所述第三配置信息还包括打孔传输信息，用于指示在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式。
  8. 一种跨小区传输块映射的方法，其特征在于，所述方法包括：
    用户设备接收接入网发送的第一配置信息，所述第一配置信息包括指示信息；
    所述用户设备根据所述指示信息确定应用跨小区传输块映射的小区，和在应用了跨小区传输块映射的所述小区上的分块映射顺序。
  9. 根据权利要求8所述的方法，其特征在于，所述指示信息包括至少一个小区索引列表，每个所述小区索引列表包括至少一个第一小区索引号；所述用户设备根据所述指示信息确定应用跨小区传输块映射的小区，包括：
    所述用户设备根据所述指示信息，确定在所述至少一个第一小区索引号对应的小区上应用跨小区传输块映射。
  10. 根据权利要求8所述的方法，其特征在于，所述指示信息包括分组索引号，所述分组索引号用于表示调度资源所对应的小区所属的分组，所述分组包括至少一个小区；所述用户设备根据所述指示信息确定应用跨小区传输块映射的小区，包括：
    所述用户设备根据所述分组索引号确定在所述分组包括的至少一个小区应用跨小区传输块映射。
  11. 根据权利要求8或10所述的方法，其特征在于，所述指示信息包括第一分块号，所述用户设备根据所述指示信息确定在应用了跨小区传输块映射的所述小区上的分块映射顺序，包括：
    所述用户设备根据所述第一分块号确定在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
  12. 根据权利要求8至11任一项所述的方法，其特征在于，所述方法包括：
    所述用户设备接收所述接入网设备发送的第二配置信息，所述第二配置信息包括混合自动重传请求HARQ实体信息；
    所述用户设备根据所述第二配置信息确定应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体；或者，指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体，以及进行数据重传所采用的混合自动重传请求HARQ进程。
  13. 根据权利要求12所述的方法，其特征在于，所述方法还包括：
    所述用户设备接收所述接入网设备发送的第三配置信息，所述第三配置信息包括第二分块号或第二小区索引号；
    所述用户设备根据所述第三配置信息确定混合自动重传请求HARQ反馈的位置信息。
  14. 根据权利要求13所述的方法，其特征在于，所述第三配置信息还包括打孔传输信息，所述方法包括：
    所述用户设备根据所述打孔传输信息确定在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式。
  15. 一种接入网设备，其特征在于，所述接入网设备包括：
    发送单元，用于向用户设备发送第一配置信息，所述第一配置信息包括指示信息；
    所述指示信息用于指示应用跨小区传输块映射的小区和在应用了跨小区传输块映射的所述小区上的分块映射顺序。
  16. 根据权利要求15所述的接入设备，其特征在于，所述指示信息包括至少一个小区索引列表，每个所述小区索引列表包括至少一个第一小区索引号；所述小区索引列表用于指示在所述至少一个第一小区索引号对应的小区上应用跨小区传输块映射。
  17. 根据权利要求15所述的接入设备，其特征在于，所述指示信息包括分组索引号，所述分组索引号用于表示调度资源所对应的小区所属的分组，所述分组包括至少一个小区；
    所述分组索引号，用于指示在所述分组包括的至少一个小区应用跨小区传输块映射。
  18. 根据权利要求15或17所述的接入设备，其特征在于，所述指示信息包括第一分块号，用于指示在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
  19. 根据权利要求15至18任一项所述的接入设备，其特征在于，
    所述发送单元，还用于向所述用户设备发送第二配置信息，所述第二配置信息包括混合自动重传请求HARQ实体信息，用于指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体；或者，指示应用了跨小区传输块映射进行数据传输的混合自动 重传请求HARQ实体，以及进行数据重传所采用的混合自动重传请求HARQ进程。
  20. 根据权利19所述的接入设备，其特征在于，
    所述发送单元，还用于向所述用户设备发送第三配置信息，所述第三配置信息包括第二分块号或第二小区索引号，所述第二分块号或者第二小区索引号用于指示混合自动重传请求HARQ反馈的位置信息。
  21. 根据权利要求20所述的接入设备，其特征在于，所述第三配置信息还包括打孔传输信息，用于指示在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式。
  22. 一种用户设备，其特征在于，所述用户设备包括：
    接收单元，用于接收接入网发送的第一配置信息，所述第一配置信息包括指示信息；
    处理单元，用于根据所述指示信息确定应用跨小区传输块映射的小区和在应用了跨小区传输块映射的所述小区上的分块映射顺序。
  23. 根据权利要求22所述的用户设备，其特征在于，所述指示信息包括至少一个小区索引列表，每个所述小区索引列表包括至少一个第一小区索引号；所述处理单元根据所述指示信息确定应用跨小区传输块映射的小区，包括：
    所述处理单元根据所述指示信息，确定在所述至少一个第一小区索引号对应的小区上应用跨小区传输块映射。
  24. 根据权利要求22所述的用户设备，其特征在于，所述指示信息包括分组索引号，所述分组索引号用于表示调度资源所对应的小区所属的分组，所述分组包括至少一个小区；所述处理单元根据所述指示信息确定应用跨小区传输块映射的小区，包括：
    所述处理单元根据所述分组索引号确定在所述分组包括的至少一个小区应用跨小区传输块映射。
  25. 根据权利要求22或24所述的用户设备，其特征在于，所述指示信息包括第一分块号，所述处理单元根据指示信息确定在应用了跨小区传输块映射的所述小区上的分块映射顺序，包括：
    所述处理单元根据所述第一分块号确定在调度资源所对应的小区应用跨小区传输块映射时，在调度资源上传输的分块的分块映射顺序。
  26. 根据权利要求22至25任一项所述的用户设备，其特征在于，
    所述接收单元，还用于接收所述接入网设备发送的第二配置信息，所述第二配置信息包括混合自动重传请求HARQ实体信息；
    所述处理单元，还用于根据所述第二配置信息确定应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体；或者，指示应用了跨小区传输块映射进行数据传输的混合自动重传请求HARQ实体，以及进行数据重传所采用的混合自动重传请求HARQ进程。
  27. 根据权利要求26所述的用户设备，其特征在于，
    所述接收单元，还用于接收所述接入网设备发送的第三配置信息，所述第三配置信息包括第二分块号或第二小区索引号；
    所述处理单元，还用于根据所述第三配置信息确定混合自动重传请求HARQ反馈的位置信息。
  28. 根据权利要求27所述的用户设备，其特征在于，所述第三配置信息还包括打孔传输信息；
    所述处理单元根据所述打孔传输信息确定在应用跨小区传输块映射的传输块上进行打孔传输时，在传输块上打孔的方式。
PCT/CN2018/071367 2017-01-05 2018-01-04 跨小区传输块映射的方法、接入网设备和用户设备 WO2018127093A1 (zh)

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