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WO2014043898A1 - Procédé, bs et ue pour la transmission et la réception de données - Google Patents

Procédé, bs et ue pour la transmission et la réception de données Download PDF

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Publication number
WO2014043898A1
WO2014043898A1 PCT/CN2012/081776 CN2012081776W WO2014043898A1 WO 2014043898 A1 WO2014043898 A1 WO 2014043898A1 CN 2012081776 W CN2012081776 W CN 2012081776W WO 2014043898 A1 WO2014043898 A1 WO 2014043898A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
bits
rate matching
matching parameter
downlink control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/081776
Other languages
English (en)
Chinese (zh)
Inventor
任晓涛
大卫·马瑞泽
周永行
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2012/081776 priority Critical patent/WO2014043898A1/fr
Priority to CN201280004179.7A priority patent/CN103828258A/zh
Publication of WO2014043898A1 publication Critical patent/WO2014043898A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • 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 signalling, i.e. of overhead other than pilot signals

Definitions

  • the present invention relates to communication technologies, and in particular, to a data receiving and transmitting method, a base station, and a user equipment. Background technique
  • CoMP Multi-Point Transmission
  • the solution of the DCS is that a user equipment (User Equipment, UE for short) dynamically switches between multiple cells, and multiple cells provide data transmission services for one UE in a time division manner.
  • UE User Equipment
  • the prior art uses a Physical Downlink Control Channel (PDCCH) to demodulate a reference signal (Demodulation Reference Signal, referred to as PDCCH).
  • PDCCH Physical Downlink Control Channel
  • the DMRS information and the pattern of the Common Reference Signal (CRS) are notified to the UE.
  • the embodiments of the present invention provide a data receiving and transmitting method, a base station, and a user equipment, so as to avoid the problem that the DMRS interference caused by the DMRS information and the rate matching parameter information binding configuration in the prior art is large, thereby improving the spectrum efficiency of the system. .
  • a data sending method including:
  • the base station generates downlink control information, where the downlink control information includes at least two bits for indicating first rate matching parameter information, and one of the at least two bits is further used to indicate demodulation reference signal DMRS information;
  • the base station sends a physical downlink control channel PDCCH including the downlink control information to the user equipment UE, so that the UE determines the DMRS information and the first rate matching parameter information according to the at least two bits.
  • the one bit is a scrambling code identifier indicating a bit nSCID.
  • the first rate matching parameter includes at least one of the following parameters: a common reference signal CRS Pattern or position;
  • the method further includes:
  • the base station sends a message to the UE, where the message is used to notify the UE that at least two bits in the downlink control information are used to indicate the first rate matching parameter information.
  • the sending, by the UE, the message includes:
  • the base station sends a radio resource control RRC message to the UE.
  • At least the one of the at least two bits except the one bit One bit is used to indicate the second rate matching parameter information.
  • a data receiving method including:
  • the user equipment UE receives the physical downlink control channel PDCCH sent by the base station, and the downlink control information in the PDCCH includes at least two bits for indicating first rate matching parameter information, and one bit of the at least two bits is further used for indicating demodulation.
  • Reference signal DMRS information with parameter information.
  • the one bit is a scrambling code identifier indicating bit nSCID.
  • the first rate matching parameter includes at least one of the following parameters: a common reference signal CRS Pattern or position;
  • the method further includes:
  • the UE receives the message sent by the base station, where the message is used to notify that at least two bits in the downlink control information are used to indicate the first rate matching parameter information.
  • the receiving the message sent by the base station includes:
  • the UE receives a radio resource control RRC message sent by the base station.
  • At least one of the at least two bits except the one bit One bit is used to indicate the second rate matching parameter information.
  • a base station including:
  • a generating module configured to generate downlink control information, where the downlink control information includes at least two bits for indicating first rate matching parameter information, and one of the at least two bits is further used to indicate a demodulation reference signal DMRS information.
  • a sending module configured to send, to the user equipment UE, a physical downlink control channel PDCCH that includes the downlink control information, so that the UE determines the DMRS information and the first rate matching parameter information according to the at least two bits.
  • the one bit is a scrambling code identifier indicating bit nSCID.
  • the first rate matching parameter includes at least one of the following parameters: a common reference signal CRS Pattern or position;
  • Multimedia broadcast multicast service single frequency network MBSFN subframe configuration information Configuration information or index number of the non-zero power channel state information reference signal NZP CSI-RS; configuration information or index number of the zero power channel state information reference signal ZP CSI-RS; physical cell identifier PCID.
  • the method further includes:
  • a notification module configured to send a message to the UE, where the message is used to notify the UE that at least two bits in the downlink control information are used to indicate the first rate matching parameter information.
  • the notification module is specifically used by the base station to send a radio resource control RRC message to the UE.
  • the at least two bits are other than the one bit At least one bit is used to indicate the second rate matching parameter information.
  • a user equipment including:
  • a receiving module configured to receive a physical downlink control channel PDCCH sent by the base station, where downlink control information in the PDCCH includes at least two bits for indicating first rate matching parameter information, and one bit of the at least two bits is further used to indicate Demodulating reference signal DMRS information; determining module, configured to determine the DMRS information and the first rate matching parameter information according to the at least two bits.
  • the one bit is a scrambling code identifier indicating a bit nSCID.
  • the first rate matching parameter includes at least one of the following parameters: a common reference signal CRS Pattern or position;
  • the notification receiving module is configured to receive the message sent by the base station, where the message is used to notify that at least two bits in the downlink control information are used to indicate the first rate matching parameter information.
  • the notification receiving module is specifically configured to receive a radio resource control RRC message sent by the base station.
  • the at least two bits except the one bit At least one bit is used to indicate the second rate matching parameter information.
  • the first rate matching parameter information is indicated by at least two bits in the downlink control information, and one of the at least two bits is further used to indicate the demodulation reference signal DMRS information, and multiple indication states may be obtained, and then
  • the downlink control information is sent to the UE through the PDCCH, and the indication state is selected according to the requirement, and the DMRS information and the rate matching parameter information are flexibly configured, so as to avoid the problem that the DMRS interference caused by the DMRS information and the rate matching parameter information binding configuration in the prior art is large.
  • the signaling overhead is saved, thereby improving the spectrum efficiency of the system.
  • Embodiment 1 is a flowchart of Embodiment 1 of a data sending method provided by the present invention
  • 2 is a schematic diagram of locations of common reference signals of different cells
  • Embodiment 3 is a flowchart of Embodiment 2 of a data sending method provided by the present invention.
  • Embodiment 4 is a flowchart of Embodiment 1 of a data receiving method provided by the present invention.
  • FIG. 5 is a flowchart of Embodiment 2 of a data receiving method provided by the present invention.
  • Embodiment 1 of a base station is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention
  • FIG. 8 is a schematic structural diagram of Embodiment 3 of a base station according to the present invention
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
  • FIG. 10 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present invention.
  • FIG. 11 is a schematic structural diagram of Embodiment 3 of a user equipment according to the present invention. detailed description
  • FIG. 1 is a flowchart of Embodiment 1 of a data sending method according to the present invention. As shown in FIG. 1, the data sending method in this embodiment includes:
  • Step 101 The base station generates downlink control information, where the downlink control information includes at least two bits for indicating first rate matching parameter information, and one of the at least two bits is further used to indicate a demodulation reference signal (DMRS). )information.
  • DMRS demodulation reference signal
  • the at least two bits of the binary values may be combined into a plurality of indication states for indicating the first rate matching parameter information, and at least one of the at least two bits may also be used to indicate the demodulation reference signal DMRS information.
  • DMRS information and rate matching parameter information may be combined into a plurality of indication states for indicating the first rate matching parameter information, and at least one of the at least two bits may also be used to indicate the demodulation reference signal DMRS information.
  • the first rate matching parameter may include a common reference signal (Common Reference
  • the DMRS information may include: initialization information for generating a scrambling code sequence, wherein the scrambling code sequence is used to generate a DMRS.
  • Step 102 The base station sends a Physical Downlink Control Channel (PDCCH) including downlink control information to the user equipment (User Equipment, UE for short), so that the UE determines the DMRS information and the first rate matching parameter according to at least two bits. information.
  • PDCCH Physical Downlink Control Channel
  • UE User Equipment
  • using at least two bits to indicate the DMRS information and the first rate matching parameter information to obtain the state indication information may be that the DMRS information and the first rate match according to the binary value of the at least two bits combined into at least four indication states.
  • Parameter information is indicated, at least two One bit of the bit is also used to indicate demodulation reference signal DMRS information.
  • one value of the nSCID indicates both the DMRS VCID and the CRS PCID, and the respective values of the DMRS VCID and the CRS PCID cannot be separately indicated. Therefore, the DMRS VCID and the CRS PCID are bound and configured. In some scenarios, the flexibility of DMRS VCID and CRS PCID configuration is required.
  • the DMRS VCIDs of the two UEs need to be configured to different values, but because of the two UEs Have the same PCID, so they should be notified of the same CRS configuration pattern, ie the CRS PCID should be the same, so the two users must be notified of the same nSCID, so the DMRS VCIDs of the two UEs cannot be different, but the same
  • the DMRS VCID will cause an increase in the interference of the DMRS between the two UEs, which in turn reduces the spectral efficiency of the system.
  • the embodiment of the present invention can flexibly select at least four indication states obtained by at least two bits to flexibly configure DMRS information and rate matching parameter information according to different application scenarios, and the scheme for multiplexing the nSCID in this embodiment Compared with the technique of completely using two newly added bits without multiplexing the nSCID indicating the rate matching parameter, one bit is added less, and therefore, the signaling overhead can be further saved.
  • the first rate matching parameter information is indicated by at least two bits, and one of the at least two bits is further used to indicate the DMRS information, and the downlink control information is obtained, and the downlink control information is sent to the UE through the PDCCH.
  • the rate matching parameter information and the DMRS information are flexibly configured according to the requirements, which avoids the problem of large DMRS interference caused by the DMRS information and the rate matching parameter information binding configuration in the prior art, and saves signaling overhead, thereby improving the spectrum efficiency of the system. .
  • the one bit is a scrambling code identifier indicating bit nSCID.
  • the other bits of the at least two bits except the one bit may be newly added bits in the downlink control information, or may be idle bits in the downlink control information. This is referred to below as a new bit. This description applies to all embodiments of the invention.
  • the nSCID may be a downlink control indication (Downlink Control Indication, One bit in the abbreviation DCI).
  • DCI Downlink Control Indication
  • an nSCID is used to indicate a virtual cell identifier (VCID) of the DMRS.
  • the foregoing first rate matching parameter includes at least one of the following parameters: a pattern or a location of the CRS;
  • Multi-cast Broadcast Single Frequency Network (MB SFN) subframe configuration information
  • NZP CSI-RS non-zero power channel state information reference signal
  • Zero power channel state information reference signal Zero power channel state information
  • ZP CSI-RS Configuration information or index number of Reference Signal
  • PCID Physical Cell Identifier
  • the foregoing first rate matching parameter is taken as a pattern or a location of a CRS
  • FIG. 2 is a schematic diagram of a location of a common reference signal of different cells.
  • the base station maps the data Z to the time-frequency resource block.
  • the CRS of different cells may have a frequency shift.
  • the frequency domain locations of the CRS port 0 and the port i of the cell A and the cell B are different, so the data mapping schemes of different cells may be different.
  • the UE needs to know the mapping relationship between the data Z and the Resource Element (RE). Therefore, the pattern or location of the CRSs of different serving cells needs to be notified to different UEs, so that the UE determines the mapping relationship between the data and the RE according to the pattern or location of the CRS, and performs data demodulation.
  • RE Resource Element
  • the MBSFN subframe configuration information of different cells also need to be notified to different UEs.
  • X(0) and X(1) respectively represent identifiers of two cells, and jointly indicate the VCID of the DMRS, the PCID of the CRS, and the NZP using the nSCID bit and a new bit.
  • the status indication information of the CSI-RS ID may be a combination of the binary values of the nSCID bit and a new bit into four indication states, as shown in Table 1.
  • the nSCID and a new bit are multiplexed to indicate the first rate matching parameter (such as the NZP CSI-RS ID in Table 1), and the new bit is used to indicate the second rate matching parameter (such as The CRS PCID in Table 1 and the parameters in Table 1 are for illustrative purposes only and are not limited thereto.
  • the DMRS VCID, the CRS PCID, the NZP CSI-RS ID, and the like may be configured by selecting any one of the above four different combinations according to different application scenarios.
  • the CRS pattern information needs to be known, and the VCID of different DMRSs needs to be learned in order to reduce the interference between the UEs.
  • the prior art multiplexes one bit of the nSCID to bind the CRS pattern information and the VCID of the DMRS. Therefore, the same CRS pattern information is configured, and the VCID of the DMRS is the same, which may cause a large interference of the DMRS.
  • the state in which the combined state of the nSCID and the newly added bit in the table 1 is "01" may be used to configure the state.
  • the indication information may be configured with the same CRS pattern information, and the VCID of the DMRS may be different, and then the downlink control information is obtained, and the PDCCH including the downlink control information is sent to the UE, so that the UE determines the VCID and CRS of the DMRS according to the status indication information.
  • Pattern information and NZP CSI-RS information may be configured with the same CRS pattern information, and the VCID of the DMRS may be different, and then the downlink control information is obtained, and the PDCCH including the downlink control information is sent to the UE, so that the UE determines the VCID and CRS of the DMRS according to the status indication information.
  • Pattern information and NZP CSI-RS information may be configured with the same CRS pattern information, and the VCID of the DMRS may be different, and then the downlink control information is obtained, and the PDCCH including the downlink control information is sent to the UE, so that the UE determines the VCID and CRS
  • a new bit may also be added to indicate at least one rate matching parameter.
  • the CRS PCID and the NZP CSI-RS ID may be simultaneously indicated by using a new bit, such as new.
  • the nSCID bit and a new bit indicating the VCID of the DMRS, the pattern or location of the CRS, and the configuration information of the ZP CSI-RS or the status indication information of the index number may be using the nSCID bit and a new one.
  • the binary values of the bit-increasing bits are combined into four indication states, as shown in Table 2.
  • the values of A to H in Table 2 may be arbitrary, and different combinations of states may be selected according to different application scenarios to indicate the required information.
  • the first rate matching parameter information is indicated by the nSCID bit and the at least one new bit, and one of the at least two bits is further used to indicate the demodulation reference signal DMRS information, and multiple indications are obtained.
  • the downlink control information is sent to the UE through the PDCCH, and the indication state is selected according to the requirement, and the DMRS information and the rate matching parameter information are flexibly configured to avoid the DMRS interference caused by the binding configuration of the DMRS information and the rate matching parameter information in the prior art.
  • the problem is saved, and the signaling overhead is saved, thereby improving the frequency efficiency of the system.
  • FIG. 3 is a flowchart of Embodiment 2 of a data sending method according to the present invention. As shown in FIG. 3, the data sending method provided in this embodiment includes:
  • Step 301 Send a message to the UE, where the message is used to notify the UE that at least two bits in the downlink control information are used to indicate the first rate matching parameter information.
  • the base station when the base station sends the foregoing message to the UE, the base station generates the downlink control information or modifies the original control information to obtain downlink control information.
  • the sending the message to the UE may include: sending a Radio Resource Control (RRC) message to the UE.
  • RRC Radio Resource Control
  • Step 302 The base station generates downlink control information.
  • Step 303 The base station sends a physical downlink control channel PDCCH that includes downlink control information to the UE, so that the UE determines the DMRS information and the first rate matching parameter information according to at least two bits.
  • PDCCH physical downlink control channel
  • the data sending method provided in this embodiment is configured to notify the UE of the type of the downlink control indication information, and then generate the downlink control information, and implement flexible configuration of the DMRS information and the rate matching parameter information to avoid DMRS information and rate matching in the prior art. Based on the problem that the DMRS interference caused by the parameter information binding configuration is large, the signaling overhead is saved, and the frequency of the system is increased. Spectral efficiency.
  • the message sent by the base station to the UE indicates that one bit of the downlink control information is used to indicate the rate matching parameter, and the indication method in the prior art can be used to adapt to different scenarios, thereby reducing Unnecessary signaling overhead.
  • FIG. 4 is a flowchart of Embodiment 1 of a data receiving method according to the present invention. As shown in FIG. 4, the data receiving method provided by the present embodiment includes:
  • Step 401 The user equipment UE receives the physical downlink control channel PDCCH sent by the base station, where the downlink control information in the PDCCH includes at least two bits for indicating the first rate matching parameter information, and one of the at least two bits is further used to indicate the demodulation reference.
  • Signal DMRS information is further used to indicate the demodulation reference.
  • Step 402 The UE determines DMRS information and first rate matching parameter information according to at least two bits.
  • using at least two joint bits to indicate the DMRS information and the first rate matching parameter information to obtain the status indication information may be based on combining the binary values of the at least two bits into at least four indication states to the DMRS information and the first The rate matching parameter information is indicated, and one of the at least two bits is further used to indicate the demodulation reference signal DMRS information.
  • the prior art uses the scrambling code identifier indication bit nSCID to simultaneously bind the DMRS information and the rate matching parameter information, for example:
  • one value of nSCID indicates both DMRS VCID and CRS PCID, and cannot separately indicate the values of DMRS VCID and CRS PCID. Therefore, DMRS VCID And CRS PCID is bound to configure. In some scenarios, the flexibility of DMRS VCID and CRS PCID configuration is required.
  • the problem is that the DMRS information and the rate matching parameter information are flexibly configured by using at least four indication states obtained by at least two bits according to different application scenarios, and the rate matching is indicated compared to using two newly added bits.
  • Parameter technique The technical solution of this embodiment can further save signaling overhead.
  • the UE may determine a mapping relationship between the data and the RE according to the learned DMRS information and the CRS pattern, and perform data demodulation.
  • the one bit is a scrambling code identifier indicating bit nSCID.
  • the nSCID may be one bit in the downlink control indication DCI.
  • the virtual cell identifier VCID indicating the DMRS is indicated by the nSCID in the prior art.
  • the foregoing first rate matching parameter includes at least one of the following parameters: a pattern or a location of the CRS;
  • PCID Physical Cell Identifier
  • At least one of the at least two bits except the one bit is used to indicate the second rate matching parameter information.
  • MBSFN subframe configuration information NZP CSI-RS configuration information or index number
  • ZP CSI-RS configuration information or index number.
  • (0) and (1) respectively represent identifiers of two cells, and jointly indicate the VCID of the DMRS, the PCID of the CRS, and the NZP CSI- using the nSCID bit and a newly added bit.
  • the status indication information of the RS ID may be a combination of the binary values of the nSCID bit and a new bit into four indication states, as shown in Table 1.
  • DMRS VCID CRS PCID
  • NZP CSI-RS ID etc. can be configured according to any of the four different combined states in Table 1 according to different application scenarios.
  • the CRS pattern information needs to be known, and the VCID of different DMRSs needs to be learned in order to reduce the interference between the UEs.
  • the prior art multiplexes one bit of the nSCID to bind the CRS pattern information and the VCID of the DMRS. Therefore, the same CRS pattern information is configured, and the VCID of the DMRS is the same, which may cause a large interference of the DMRS.
  • the state in which the combined state of the nSCID and the newly added bit in the table 1 is "01" may be used to configure the state.
  • the VCIDs may be different, and then the downlink control information is obtained, and the PDCCH including the downlink control information is sent to the UE, and the UE receives the first state indication information included in the first control information in the PDCCH, and determines the VCID of the DMRS and the PCID of the CRS according to the The PCID of the CRS determines the mapping relationship between the data and the RE, and performs data demodulation.
  • the downlink control information in the PDCCH sent by the UE by the receiving base station includes at least two bits for indicating the first rate matching parameter information, and one of the at least two bits is further used to indicate the demodulation reference signal.
  • the DMRS information can be used to obtain multiple indication states, and then the downlink control information is sent to the UE through the PDCCH.
  • the indication state can be selected according to the requirements, and the DMRS information and the rate matching parameter information can be flexibly configured to avoid the DMRS information and the rate matching parameter in the prior art.
  • the problem of large DMRS interference caused by the information binding configuration saves signaling overhead and improves the spectrum efficiency of the system.
  • FIG. 5 is a flowchart of Embodiment 2 of a data receiving method according to the present invention. As shown in FIG. 5, the data sending method provided in this embodiment includes:
  • Step 501 Receive a message sent by the base station, where the message is used to notify the UE that at least two bits in the downlink control information are used to indicate the first rate matching parameter information.
  • the base station when the UE receives the foregoing message sent by the base station, the base station generates the downlink control information or modifies the original control information to obtain downlink control information, and correspondingly, the UE receives the physical downlink that includes the downlink control information.
  • Control channel PDCCH Control channel
  • the message sent by the receiving base station may include: receiving a radio resource control RRC message sent by the base station.
  • the type of the status indication mechanism used by the base station can be learned by receiving a Radio Resource Control (RRC) message sent by the base station.
  • RRC Radio Resource Control
  • Step 502 The UE acquires downlink control information from the PDCCH.
  • Step 503 The UE determines the DMRS information and the first rate matching parameter information according to at least two bits.
  • the UE receives the type of the downlink control indication information sent by the base station, receives the PDCCH sent by the base station, and determines the DMRS information and the first rate matching parameter information according to at least two bits.
  • the configuration of the DMRS information and the rate matching parameter information is flexible, and the signaling overhead is saved on the basis of avoiding the problem that the DMRS interference caused by the DMRS information and the rate matching parameter information binding configuration in the prior art is large, thereby improving the system.
  • the message sent by the base station to the UE indicates that one bit of the downlink control information is used to indicate the rate matching parameter, and the indication method in the prior art may be used to adapt to different scenarios, thereby reducing Unnecessary signaling overhead.
  • FIG. 6 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • the base station in this embodiment includes a generating module 61 and a sending module 62, where the generating module 61 is configured to generate downlink control information, where The control information includes at least two bits for indicating the first rate matching parameter information, one of the at least two bits is further used to indicate the demodulation reference signal DMRS information, and the sending module 62 is configured to send the PDCCH including the downlink control information to the user equipment UE. And downlink control channel PDCCH, so that the UE determines DMRS information and first rate matching parameter information according to at least two bits.
  • one bit is the scrambling code identifier indicating bit nSCID.
  • the nSCID may be one bit in a Downlink Control Indication (DCI).
  • DCI Downlink Control Indication
  • the foregoing first rate matching parameter may include at least one of the following parameters:
  • the device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 1. The implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 7 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention. As shown in FIG. 7, on the basis of the embodiment shown in FIG. 6, the method further includes a notification module 63, where the notification module 63 is configured to The UE sends a message, where the message is used to notify the UE that at least two bits in the downlink control information are used to indicate the first rate matching parameter information.
  • the device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 3, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 8 is a schematic structural diagram of Embodiment 3 of a base station according to the present invention.
  • the base station of this embodiment includes at least one processor 801, such as a CPU, at least one network interface 804 or other user interface 803, and a memory 805.
  • Communication bus 802 is used to implement connection communication between these devices.
  • the base station optionally includes a user interface 803 including a display, a keyboard or a pointing device.
  • the memory 805 may include a high speed RAM memory, and may also include a non-volatile memory such as at least one disk memory.
  • the memory 805 can optionally include at least one storage device located remotely from the aforementioned processor 801.
  • memory 805 stores the following elements, encodings, modules or data structures, or a subset thereof, or their extension set:
  • Operating system 806 containing various programs for implementing various basic services and handling hardware-based tasks
  • the generating module 61 is configured to generate downlink control information, where the downlink control information includes at least two bits for indicating first rate matching parameter information, and one of the at least two bits is further used to indicate demodulation reference signal DMRS information;
  • the sending module 62 is configured to send, to the user equipment UE, a physical downlink control channel PDCCH that includes downlink control information, so that the UE determines the DMRS information and the first rate matching parameter information according to at least two bits.
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
  • the user equipment in this embodiment includes a receiving module 91 and a determining module 92, where the receiving module 91 is configured to receive the physicality sent by the base station.
  • the downlink control channel PDCCH, the downlink control information in the PDCCH includes at least two bits for indicating the first rate matching parameter information, and one of the at least two bits is further used to indicate the demodulation reference signal DMRS information, and the determining module 92 is configured to use at least The two bits determine the DMRS information and the first rate matching parameter information.
  • the one bit is a scrambling code identifier indicating bit nSCID.
  • the nSCID may be one bit in a Downlink Control Indication (DCI).
  • DCI Downlink Control Indication
  • the foregoing first rate matching parameter may include at least one of the following parameters:
  • Multimedia broadcast multicast service single frequency network MBSFN subframe configuration information Configuration information or index number of the non-zero power channel state information reference signal NZP CSI-RS; configuration information or index number of the zero power channel state information reference signal ZP CSI-RS; physical cell identifier PCID.
  • the device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 4, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present invention. As shown in FIG. 10, based on the implementation example of FIG. 10, a notification receiving module 93 may be further included, where the notification receiving module 93 is used. Receiving a message sent by the base station, where the message is used to notify at least two bits in the downlink control information to indicate the first rate matching parameter information.
  • the device of this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 5, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the foregoing mechanism receiving module may be further configured to receive radio resource control sent by the base station.
  • At least one of the at least two bits except the one bit is used to indicate the second rate matching parameter information.
  • FIG. 11 is a schematic structural diagram of Embodiment 3 of a user equipment according to the present invention.
  • the user equipment provided in this embodiment includes: a memory 1101, a chip 1102, an RF circuit 1103, an external interface 1104, an audio circuit 1105, and an input. /Output (I/O) subsystem 1106.
  • the chip 1102 includes: a memory controller, a processing unit CPU, and a peripheral interface; the memory 1101 includes: a receiving module 91, a determining module 92, and other modules such as an operating system.
  • the above components communicate via one or more communication buses or signal lines, and the user equipment may include, but is not limited to, a mobile phone or a tablet.
  • the components shown in Figure 11 can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or dedicated integrated circuits.
  • Memory 1101 can include high speed random access memory, non-volatile solid state storage devices, and the like.
  • the memory controller can control access to the memory 1101 by other components of the user equipment, such as the CPU and peripheral interfaces, to invoke the various modules in the memory 1101 to perform the respective functions.

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

Abstract

Dans son mode de réalisation, la présente invention se rapporte à un procédé, à une BS et à un UE. Le procédé, la BS et l'UE selon l'invention sont adaptés pour exécuter une transmission et une réception de données. Le procédé pour la transmission de données, selon l'invention, comprend les étapes suivantes : la BS génère des données de commande sur la liaison descendante, lesdites données de commande sur la liaison descendante comprenant au moins deux bits qui sont utilisés pour indiquer les premières informations relatives à un paramètre d'adaptation du débit binaire, et l'un des deux bits ou plus étant également utilisé pour indiquer des informations relatives à un signal de référence de démodulation (informations de DMRS); et la BS transmet ensuite à l'équipement d'utilisateur (UE) le canal de commande physique sur la liaison descendante (PDCCH) qui contient les données de commande sur la liaison descendante. De cette manière, l'UE peut déterminer les informations de DMRS et les premières informations de paramètre d'adaptation du débit binaire, sur la base des deux bits ou plus. La solution technique décrite dans la présente invention est apte à configurer les informations de DMRS et les informations de paramètre d'adaptation du débit binaire, selon besoin et avec une grande souplesse. Par voie de conséquence, la présente invention est apte à résoudre le grave problème de brouillage DMRS provoqué, dans l'état de la technique, par la configuration contraignante des informations de DMRS et des informations de paramètre d'adaptation du débit binaire. Dans le même temps, l'invention est apte à réduire le coût de la signalisation et à améliorer l'efficacité d'utilisation de la fréquence du système.
PCT/CN2012/081776 2012-09-21 2012-09-21 Procédé, bs et ue pour la transmission et la réception de données Ceased WO2014043898A1 (fr)

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CN201280004179.7A CN103828258A (zh) 2012-09-21 2012-09-21 数据接收和发送方法、基站以及用户设备

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