WO2016173489A1 - 一种控制信息发送方法和接收方法及发射机、接收机 - Google Patents

一种控制信息发送方法和接收方法及发射机、接收机 Download PDF

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Publication number
WO2016173489A1
WO2016173489A1 PCT/CN2016/080235 CN2016080235W WO2016173489A1 WO 2016173489 A1 WO2016173489 A1 WO 2016173489A1 CN 2016080235 W CN2016080235 W CN 2016080235W WO 2016173489 A1 WO2016173489 A1 WO 2016173489A1
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dci
type
receiver
received
decoding
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PCT/CN2016/080235
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English (en)
French (fr)
Inventor
黄秋萍
陈润华
高秋彬
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电信科学技术研究院
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Priority to EP16785920.6A priority Critical patent/EP3291471A4/en
Priority to EP22212317.6A priority patent/EP4167509A1/en
Priority to US15/570,748 priority patent/US10660078B2/en
Publication of WO2016173489A1 publication Critical patent/WO2016173489A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023Interference mitigation or co-ordination
    • H04J11/005Interference mitigation or co-ordination of intercell interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027Scheduling of signalling, e.g. occurrence thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0038Blind format detection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045Arrangements at the receiver end
    • H04L1/0047Decoding adapted to other signal detection operation
    • H04L1/0048Decoding adapted to other signal detection operation in conjunction with detection of multiuser or interfering signals, e.g. iteration between CDMA or MIMO detector and FEC decoder
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0023Time-frequency-space
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • H04L5/0073Allocation arrangements that take into account other cell interferences
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0452Multi-user MIMO systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037Inter-user or inter-terminal allocation

Definitions

  • the present invention relates to the field of communications, and in particular, to a control information transmitting method and receiving method, and a transmitter and a receiver.
  • intra-cell interference intra-cell interference
  • inter-cell interference in English: inter-cell interference
  • the small-area interference is because the transmitters of the neighboring cells (such as the base station) are scheduled at the same frequency (scheduled in English) other user equipments of the neighboring cell (English: User Equipment, referred to as UE).
  • UE User Equipment
  • inter-cell interference has a greater impact on the UE at the cell edge.
  • Inter-cell interference mainly comes from multi-user multiple-input multiple-output (English: Multi-User Multiple-Input Multiple-Output, referred to as: MU-MIMO) interfering UE paired with the target UE.
  • MU-MIMO is an important transmission method in wireless communication systems.
  • one transmitter may schedule multiple UEs to transmit or transmit in the same time domain and/or frequency domain resources to form a UE pair.
  • different beamforming is adopted for different UEs (in English: beamforming), and multiple accesses are implemented by using different positions of the UE in the airspace. If the beamforming matrix of one UE is better than the channel orthogonality of another UE, the intra-cell interference can be reduced.
  • different powers may be configured for different UEs in a power manner, or different spreading codes may be configured for different UEs by using a spreading code, and the UE suppresses interference through an advanced receiver.
  • the MU-MIMO technology of the existing system is implemented based on the transmitter scheduling, and the transmitter dynamically schedules the paired UE for the target UE, and the interference of the paired UE to the target UE may be intra-cell interference or inter-cell interference.
  • the target UE can implement interference suppression for the paired UE using an advanced receiver to improve the target UE.
  • Signal reception performance With the advancement of technology, an advanced receiver with interference suppression capability has emerged with respect to a conventional receiver that does not have interference suppression capability, and the target UE can implement interference suppression for the paired UE using an advanced receiver to improve the target UE. Signal reception performance.
  • the MU-MIMO technology of the existing system is implemented based on network side (such as eNB) scheduling. If the UE in the MU-MIMO paired UE attempts to perform interference suppression on the interference signal received by the UE, it must pass a relatively complicated operation. Process.
  • the embodiment of the present invention provides a control information sending method and a receiving method, and a transmitter and a receiver, which are configured to send a DCI corresponding to a DCI type to a receiver, and the receiver can obtain the DCI corresponding to the second type of DCI.
  • the parameters of the interference signal received by the receiver are used to perform interference suppression by using the parameters of the interference signal, thereby improving the simplicity of the receiver for interference suppression.
  • An embodiment of the present invention provides a method for sending control information, including the following steps:
  • DCI type includes a type of a first type of DCI and/or a type of a second type of DCI, where the second type of DCI includes a parameter of an interference signal received by the receiver;
  • the DCI type is selected, including:
  • the DCI type is selected based on the receiver type and/or interference suppression scheme.
  • the DCI type is selected, including:
  • the method further includes:
  • the indication information indicating the number of blind detections corresponding to each type of DCI is transmitted.
  • the method further includes:
  • the indication information indicating the selected DCI type is transmitted.
  • the method further includes:
  • mapping relationship between the DCI type and the system parameter is sent, specifically:
  • mapping relationship between the DCI type and system parameters is sent through static signaling.
  • the DCI type is selected, including:
  • the type of DCI is selected for the subframes in the subframe group in units of subframe groups.
  • An embodiment of the present invention provides a method for receiving control information, including the following steps:
  • DCI type includes a type of the first type of DCI and/or a type of the second type of DCI, where the second type of DCI includes interference received by the receiver Signal parameter
  • the received DCI is decoded.
  • the method further includes:
  • Each type of DCI is blindly checked according to the number of blind checks corresponding to each type of DCI pre-agreed.
  • the decoding of the received DCI includes:
  • the received DCI is decoded according to a pre-agreed DCI type.
  • the decoding of the received DCI includes:
  • the DCI type corresponding to the system parameter is determined according to the pre-agreed system parameter and the mapping relationship between the DCI type and the system parameter, and the received DCI is decoded according to the determined DCI type.
  • the decoding of the received DCI includes:
  • the decoding of the received DCI includes:
  • the received DCI is decoded according to the type of receiver.
  • the coding mode corresponding to the DCI type includes any one of the following modes:
  • the first type of DCI and the second type of DCI are detected and decoded.
  • An embodiment of the present invention provides a transmitter, including:
  • a processing unit configured to select a downlink control information DCI type, where the DCI type includes a type of a first type of DCI and/or a type of a second type of DCI, where the second type of DCI includes a parameter of an interference signal received by the receiver ;
  • a sending unit configured to send the DCI corresponding to the selected DCI type.
  • the processing unit is specifically configured to:
  • the DCI type is selected based on the receiver type and/or interference suppression scheme.
  • the processing unit is specifically configured to:
  • the processing unit is further configured to:
  • the sending unit is further configured to:
  • the indication information indicating the number of blind detections corresponding to each type of DCI is transmitted.
  • the sending unit is further configured to:
  • the indication information indicating the selected DCI type is transmitted.
  • the processing unit is further configured to:
  • the sending unit is further configured to:
  • the sending unit is specifically configured to:
  • mapping relationship between the DCI type and system parameters is sent through static signaling.
  • the processing unit is specifically configured to:
  • the type of DCI is selected for the subframes in the subframe group in units of subframe groups.
  • An embodiment of the present invention provides a receiver, including:
  • a receiving unit configured to receive a DCI corresponding to a downlink control information DCI type selected by the transmitter, where the DCI type includes a type of the first type of DCI and/or a type of the second type of DCI, where the second type of DCI includes the receiving The parameters of the interference signal received by the machine;
  • a processing unit configured to decode the received DCI.
  • the processing unit is specifically configured to:
  • Each type of DCI is blindly checked according to the received indication of the number of blind checks corresponding to each type of DCI;
  • Each type of DCI is blindly checked according to the number of blind checks corresponding to each type of DCI pre-agreed.
  • the processing unit is specifically configured to:
  • the received DCI is decoded according to a pre-agreed DCI type.
  • the processing unit is specifically configured to:
  • the DCI type corresponding to the system parameter is determined according to the pre-agreed system parameter and the mapping relationship between the DCI type and the system parameter, and the received DCI is decoded according to the determined DCI decoding mode corresponding to the DCI type.
  • the processing unit is specifically configured to:
  • the processing unit is specifically configured to:
  • the received DCI is decoded according to the type of receiver.
  • the coding mode corresponding to the DCI type includes any one of the following modes:
  • the first type of DCI and the second type of DCI are detected and decoded.
  • a processor for reading a program in the memory performing the following process:
  • the DCI type includes a type of a first type of DCI and/or a type of a second type of DCI
  • the second type of DCI includes a parameter of an interference signal received by the receiver; and the selected one is transmitted by the transceiver 502 DCI corresponding to the DCI type
  • the transceiver is configured to send the DCI corresponding to the selected DCI type under the control of the processor.
  • a transceiver configured to receive, according to a processor, a DCI corresponding to a DCI type selected by the transmitter; wherein the DCI type includes a type of the first type of DCI and/or a type of the second type of DCI, the second type of DCI Included parameters of the interference signal received by the receiver; the DCI received by the transceiver is decoded;
  • the processor is configured to read a program in the memory and decode the received DCI.
  • the transmitter selects the DCI type and transmits the DCI corresponding to the selected DCI type, and the DCI type includes the type of the first type of DCI and/or the type of the second type of DCI, and the first type of DCI does not.
  • the parameters including the interference signal received by the receiver, and the second type of DCI include parameters of the interference signal received by the receiver. It can be seen that the transmitter can flexibly selectively transmit the first type of DCI and/or the second type of DCI. In this way, on the one hand, when the receiver performs interference suppression on the interference signal received by the receiver, the interference suppression can be performed by using the parameters of the interference signal received by the receiver included in the DCI corresponding to the type of the received DCI of the second type.
  • the receiver is improved in interference suppression; on the other hand, when the receiver does not perform interference suppression on the interference signal received by the receiver, the transmitter can selectively transmit the DCI corresponding to the type of the first type of DCI, The type of DCI does not include the parameters of the interference signal received by the receiver, thereby reducing the load of data transmission and further reducing the complexity of processing data by the receiver.
  • FIG. 1 is a schematic flowchart of a method for sending control information according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for receiving control information according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a transmitter according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of another transmitter according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another user equipment according to an embodiment of the present invention.
  • the embodiments of the present invention are applicable to a long term evolution (Long Term Evolution, LTE for short) system or an evolved system of an LTE system.
  • LTE Long Term Evolution
  • the embodiments of the present invention are applied to a MU-MIMO scenario, such as multi-user transmission based on superposition coding.
  • the embodiments of the present invention are not limited to the LTE system or the LTE system and the MU-MIMO scenario.
  • the embodiment of the present invention can also be used to perform interference suppression. For example, it is used for suppression of interference of other UEs by the target UE, for example, for suppression of user interference of other local cells.
  • the receiver of the UE in the embodiment of the present invention is divided into a legacy receiver and an advanced receiver.
  • Advanced receivers have interference rejection compared to conventional receivers.
  • Advanced receivers are as follows:
  • Interference cancellation receiver including serial interference cancellation (English: serial interference cancellation, SIC for short) receiver and parallel interference cancellation (English: Parallel interference cancellation, referred to as: PIC) receiver.
  • the principle of the interference cancellation receiver is that the target UE first demodulates the signal of the interfering UE, then reconstructs the interference signal, and deletes the interference signal of the interfering UE from the received signal, and then the target UE demodulates the signal of the target UE.
  • the interference cancellation receiver can be divided into a symbol level serial interference cancellation receiver and a codeword level interference deletion (in English: codeword-level interference cancellation, referred to as: CWIC) ) Receiver.
  • Maximum Likelihood (English: Maximum Likelihood, ML for short) Receiver (or ML receiver with reduced complexity): The working principle is that the target UE combines the signal of the target UE with the signal of the interfering UE for ML (or lowering) Complexity ML) demodulation to improve the reception performance of the target UE signal.
  • the first UE and the second UE are defined in the embodiment of the present invention.
  • the first UE is the UE served by the transmitter, and the second UE is the interfering UE of the first UE, that is, the signal generated by the second UE is
  • the first UE and the second UE may be inter-cell interference or inter-cell interference.
  • the embodiment of the present invention does not further define that the first UE and the second UE are in the same cell or in different cells.
  • the number of second UEs may be one or more.
  • the first UE and the second UE may be UEs in the MU-MIMO pairing user group.
  • the first UE here may be any one of the MU-MIMO pairing user groups, and the UE other than the first UE in the MU-MIMO pairing user group is referred to as a second UE.
  • the first UE and the second UE are intra-cell interference, that is, the first UE and the second UE serve the same transmitter, and at this time, for each of the MU-MIMO pairing user groups.
  • the UE may send control information to the first UE and the second UE in a manner provided by the embodiment of the present invention.
  • each transmitter may correspond to the transmitter server.
  • the UE sends control information. Specifically, the transmitter serving the first UE sends control information to the first UE, and the transmitter serving the second UE sends control information to the second UE.
  • the embodiment of the present invention does not limit the process of the UE performing UE scheduling based on the MU-MIMO technology. Only one MU-MIMO based scheduling process is listed here.
  • the UE performs channel estimation, obtains a channel matrix between the UE and the transmitter, and then feeds back to the transmitter the maximum signal to interference plus noise ratio (English: Signal to Interference plus Noise Ratio, SINR for short).
  • the transmitter collects the index value fed back by each UE, performs UE pairing according to the index value fed back by each UE and further according to a certain criterion (such as proportional fairness criterion).
  • the number of UEs in the multi-user transmission pairing user group may be two or more than two.
  • FIG. 1 is a schematic flowchart showing a method for transmitting control information according to an embodiment of the present invention. The process is implemented at the transmitter, for example, by a transmitter, a base station, or a transmitter having base station functionality.
  • a method for transmitting control information according to an embodiment of the present invention includes the following steps:
  • Step 101 Select a DCI type, where the DCI type includes a type of a first type of DCI and/or a type of a second type of DCI, and the second type of DCI includes a parameter of an interference signal received by the receiver.
  • Step 102 Send a DCI corresponding to the selected DCI type.
  • the second type of DCI includes parameters of the interference signal received by the receiver.
  • the first type of DCI does not include parameters of the interference signal received by the receiver. .
  • only the first type of DCI may be selected, or only the second DCI may be selected, or the first type of DCI and the second type of DCI may be selected simultaneously, and the DCI corresponding to the selected DCI type may be transmitted.
  • the DCI type is selected in a semi-static manner or in a dynamic manner.
  • the UE may perform channel quality information feedback periodically or aperiodically, and the base station (transmitter) performs user scheduling periodically or aperiodically according to the channel quality information of the UE and determines the receiver used by the first UE. Types of.
  • the base station periodically performs the UE receiver type update and the DCI type update, but when a new user accesses the cell, the trigger base station reselects the paired user, the receiver type, and the DCI type for the scheduled user. .
  • the base station semi-statically receives interference signal information from other cells, and semi-statically selects the receiver type of the UE according to the interference information, thereby selecting the DCI type of the UE in a semi-static manner.
  • the base station can dynamically perform user scheduling and dynamically select the receiver type and DCI type of the user, for example, scheduling at the subframe level.
  • the DCI type is selected based on the receiver type and/or interference suppression scheme. Specifically, the following three options are included:
  • the DCI type is selected according to the type of the receiver, the DCI type is selected according to the interference suppression scheme, and the DCI type is selected according to the receiver type and the interference suppression scheme.
  • the DCI type can be selected according to one or several conditions.
  • application scenarios :
  • Scenario 1 If the receiver of the first UE is a conventional receiver that does not have interference suppression capability, the first type of DCI is selected. Since the receiver of the first UE does not have the interference suppression capability, the DCI corresponding to the first type of DCI transmitted at this time does not include the parameters of the interference signal received by the receiver, thereby reducing the load of the data transmission and reducing the load. The first UE parses the complexity of the data.
  • Scenario 2 If the receiver of the first UE is an advanced receiver with interference suppression capability, the second type of DCI is selected. At this time, the first UE may perform interference suppression on the signal of the second UE by using the parameter of the interference signal received by the receiver included in the DCI corresponding to the second type of DCI, so as to improve the signal receiving performance of the first UE.
  • the interference suppression scheme is that the first UE does not perform interference suppression on the received interference signal
  • the first type of DCI is selected regardless of whether the receiver of the first UE is an advanced receiver or a legacy receiver.
  • the DCI corresponding to the first type of DCI transmitted at this time does not include the parameter of the interference signal received by the receiver, thereby reducing the load of the data transmission and reducing the complexity of parsing the data by the first UE.
  • the interference suppression scheme is that the first UE performs interference suppression on the received interference signal
  • the second type of DCI is selected.
  • the first UE may perform interference suppression on the signal of the second UE by using the parameter of the interference signal received by the receiver included in the DCI corresponding to the second type of DCI, so as to improve the signal receiving performance of the first UE.
  • the interference suppression scheme is that the first UE performs interference suppression on the received interference signal, and the receiver of the first UE is an advanced receiver, the second type of DCI is selected.
  • the first UE may perform interference suppression on the signal of the second UE by using the parameter of the interference signal received by the receiver included in the DCI corresponding to the second type of DCI, so as to improve the signal receiving performance of the first UE.
  • the interference suppression scheme is that the first UE performs interference suppression on the received interference signal, but the receiver of the first UE is a legacy receiver, the first type of DCI is selected.
  • the DCI corresponding to the first type of DCI transmitted at this time does not include the parameter of the interference signal received by the receiver, thereby reducing the load of the data transmission and reducing the complexity of parsing the data by the first UE.
  • the first type DCI and/or the second type DCI can be freely selected, and the DCI corresponding to the selected DCI type is sent, and the same DCI is not sent for all receivers, thereby reducing network data transmission. Negative The load further reduces the complexity of the receiver processing data of the first UE.
  • the interference suppression scheme in the embodiment of the present invention may be determined in multiple manners, such as by an artificial manner, after being formulated by a high-level transmitter, and being delivered, or by a transmitter according to a load condition of the cell where the first UE is located, and system traffic. Or factors such as the capacity of the first UE are determined.
  • the DCI of the first UE is provided to the first UE through a downlink control channel.
  • the downlink control channel and the downlink data channel of the first UE may be encoded and transmitted independently or jointly.
  • the DCI of the first UE is in the physical downlink control channel (English: Physical Downlink Control Channel, referred to as PDCCH). Encode and send.
  • the PDCCH and the PDSCH are transmitted on the same subframe in the LTE system, because the DCI bearer enables the first UE to decode the physical downlink shared channel (Physical Downlink Shared Channel, referred to as: PDSCH).
  • the first UE needs to first decode the PDCCH to obtain DCI, and then decode the PDSCH by using the information obtained by DCI decoding.
  • the DCI sent by the transmitter may include two types of DCIs. Therefore, in the embodiment of the present invention, after selecting the DCI type, the transmitter sends the DCI corresponding to the selected DCI type. After receiving the DCI, the receiver needs to determine the type of DCI sent by the transmitter, and further decodes the received DCI according to the decoding mode corresponding to the determined DCI type.
  • the receiver determines the type of DCI selected by the transmitter in the following preferred ways:
  • the indication information indicating the selected DCI type is sent.
  • the indication information indicating the DCI type selected by the transmitter may be sent, so that after receiving the indication information, the receiver determines the type of DCI sent by the transmitter. And decoding the received DCI according to the determined DCI type.
  • the base station in the LTE determines and sends indication information for indicating the DCI type selected by the transmitter, and further indicates a DCI type that the receiver needs to perform blind detection, and the signaling of the indication information may all pass the radio resource control protocol.
  • RRC Radio Resource control
  • Method 2 Pre-agreed DCI type.
  • the DCI type is predefined by the standard, and the predefined DCI type is known in both the transmitter and the receiver. Then, the transmitter no longer needs to additionally send indication information indicating the type of DCI selected by the transmitter.
  • the receiver receives the DCI corresponding to the DCI type, the receiver directly passes the pre-agreed DCI according to the pre-agreed DCI type.
  • the coding mode corresponding to the type decodes the DCI. For example, if the DCI type is pre-agreed as the second type of DCI, the receiver decodes the received DCI according to the decoding mode in which the second type of DCI can be decoded.
  • the receiver decodes the received DCI according to a decoding mode in which the first type of DCI can be decoded. If the DCI type is pre-agreed as the first type DCI and the second type DCI, the receiver decodes the received DCI according to a decoding mode in which the first type DCI and the second type DCI can be decoded.
  • the transmitter establishes a mapping relationship between the DCI type and system parameters, and sends a mapping relationship between the DCI type and system parameters.
  • the mapping relationship may be specific to the receiver of the first UE.
  • the system parameter may be a system parameter carried in the information sent by the transmitter, such as a subframe number.
  • the system parameters can also be a system parameter in the entire communication system of the transmitter and receiver.
  • the DCI type corresponding to the current system parameter may be determined according to the mapping relationship between the received DCI type and the system parameter, and the receiver further performs the translation corresponding to the DCI type according to the determined DCI type.
  • the code mode decodes the received DCI.
  • the mapping relationship between the DCI type and the system parameters is pre-agreed.
  • the mapping relationship may be specific to the receiver of the first UE.
  • the mapping relationship between the DCI type and the system parameters may be pre-agreed in the standard, and both the transmitter and the receiver know the pre-agreed mapping relationship.
  • the system parameters are system parameters carried in the information sent by the transmitter, such as the subframe number, frame number, etc., after the receiver receives the DCI, the receiver can pass the system parameters, and the pre-agreed DCI type and system parameters.
  • the mapping relationship determines the DCI type corresponding to the current system parameter, and the receiver further decodes the received DCI by using the decoding mode corresponding to the DCI type according to the determined DCI type.
  • the correspondence between the subframe number and the DCI type is pre-defined in the standard, and the correspondence transmitter and the receiver are both in a known state.
  • the receiver selects the type of DCI for the subframes in the subframe group in units of subframe groups. Specifically, the type of the first group of DCIs is selected for the first group of subframes, and the type of the second group of DCIs is selected for the second group of subframes; the first group of subframes and the second group of subframes do not overlap in time. For example, the type of the first group of DCIs is a first type of DCI, and the types of the second group of DCIs are a first type of DCI and a second type of DCI. The first group of subframes is subframe 1 and subframe 6, and the second group of subframes is subframe 2 and subframe 4.
  • the receiver determines the DCI type corresponding to the received DCI according to the correspondence between the pre-agreed subframe number and the DCI type, and the received subframe number corresponding to the DCI, and receives the DCI according to the determined DCI type.
  • the DCI is decoded.
  • the received DCI is decoded according to the type of the receiver.
  • the advanced UE has the interference suppression capability, and the first UE decodes the received DCI according to the decoding mode corresponding to the second type of DCI.
  • the obtained parameters of the interference information included in the second type of DCI perform interference suppression.
  • the receiver of the first UE is a conventional receiver, since the legacy receiver does not have the interference suppression capability, the first UE decodes the received DCI according to the decoding mode corresponding to the first type of DCI.
  • the DCI type is determined according to any one of the above six preferred manners. Further, the receiver decodes the DCI corresponding to the DCI type according to the decoding mode corresponding to the determined DCI type.
  • the receiver determines that the DCI type selected by the transmitter is the first type of DCI, and the receiver can decode the first type of DCI using the coding mode corresponding to the first type of DCI; the receiver determines the transmitter selection.
  • DCI type is second For class DCI, the receiver can use the coding mode corresponding to the second type of DCI to decode the second type of DCI; the receiver determines that the DCI type selected by the transmitter is the first type DCI and the second type DCI, then the receiver A coding mode corresponding to the first type DCI or the second type DCI capable of simultaneously decoding the first type DCI and the second type DCI may be used.
  • the coding mode corresponding to the DCI type includes any one of the following modes: detecting and decoding the first type of DCI, detecting and decoding the second type of DCI, detecting and decoding the first type of DCI, and The second type of DCI.
  • the coding mode corresponding to the first type of DCI is any one of two coding modes: detecting and decoding the first type of DCI, detecting and decoding the first type of DCI, and the second type. DCI.
  • the coding mode corresponding to the second type of DCI is any one of two coding modes: detecting and decoding the second type of DCI, detecting and decoding the first type of DCI, and the second type. DCI.
  • the decoding mode of simultaneously detecting and decoding the first type of DCI and the second type of DCI is a decoding mode capable of simultaneously decoding the first type of DCI and the second type of DCI.
  • the embodiment of the present invention may provide that if the receiver of the first UE parses the parameters of the interference signal in the second type of DCI, Interference suppression is performed on the interference signal received by the receiver; otherwise, interference suppression is not performed on the interference signal received by the receiver.
  • mapping relationship between the DCI type and the system parameter is sent, and specifically includes any one of the following three paths:
  • Path 1 transmitting the mapping relationship between the DCI type and system parameters through dynamic signaling
  • Path 2 transmitting the mapping relationship between the DCI type and system parameters by semi-static signaling
  • Path 3 The mapping relationship between the DCI type and system parameters is sent through static signaling.
  • the dynamic signaling refers to signaling that can be dynamically sent.
  • the mapping relationship between the DCI type and the system parameter is dynamically transmitted.
  • the mapping relationship between the DCI type and the system parameter is dynamic transmission, for example, the mapping relationship can be sent in each subframe.
  • the mapping relationship between the DCI type and the system parameter is sent by semi-static signaling, which means that the mapping relationship between the DCI type and the system parameter changes over a relatively long period of time, for example, in dozens or hundreds of sub-portions.
  • the signaling is sent once within the time range of the frame, and the frequency at which the transmitter transmits a new mapping relationship is low, conforming to the characteristics of semi-static notification. For example, every tens or hundreds of subframes, the transmitter sends a mapping relationship to the receiver.
  • one possible semi-static indication mode is the RRC signaling mode.
  • mapping relationship between the DCI type and the system parameter is sent by using static signaling: the mapping relationship between the DCI type and the system parameter does not change, and the transmitter sends the mapping relationship only once to the receiver.
  • a DCI transmission of a first UE may use multiple coding rates.
  • each UE can only place a PDCCH on a limited set of Control Channel Element (CCE) locations.
  • the DCI of the first UE is encoded, modulated, and mapped onto one PDCCH, and the aggregation level of the PDCCH may be 1, 2, 4 or 8 CCEs.
  • the UE performs blind detection on its PDCCH in the search space, and the search space is that the UE looks for the PDCCH. CCE location.
  • the UE's search space contains multiple possible candidate PDCCHs. The number of candidate PDCCHs to be searched corresponding to different CCE aggregation levels may be different.
  • the protocol specifies that, for example, for PDCCHs with aggregation levels 1, 2, 4, and 8, the aggregation levels are 6, 6, 2, and 2, respectively.
  • the first UE implements blind detection of the control signal by detecting the candidate PDCCH for different CCE aggregation levels on the PDCCH search space.
  • the receiver of the first UE in the embodiment of the present invention may need to monitor and decode multiple types of DCI, such as the second type DCI and the first type DCI, which undoubtedly increases the complexity of the receiver blind detection of the first UE. degree.
  • the receiver determines the number of blind detections corresponding to each type of DCI, and the following two methods are available:
  • the transmitter determines the number of blind detections corresponding to each type of DCI, and transmits indication information indicating the number of blind detections corresponding to each type of DCI.
  • the transmitter appropriately configures the number of blind detections for each type of DCI, and directly sends an instruction of the number of blind detections to the receiver of the first UE; or sends information for indicating the number of blind detections of the first UE to First UE.
  • the number of blind checks corresponding to each type of DCI is pre-agreed.
  • the number of blind detections corresponding to each type of DCI can be pre-agreed in the standard, and both the transmitter and the receiver are in a known state.
  • the transmitter can blindly check each type of DCI according to the number of blind checks corresponding to each type of DCI pre-agreed.
  • the PDCCH aggregation level and the number of candidate PDCCHs to be monitored for each PDCCH aggregation level may be The transmitter is configured or specified in the standard.
  • the number of blind checks can be independent of the aggregation level or related to the aggregation level.
  • the transmitter configures the number of blind detections of the conventional DCI format when the aggregation level is 1, 2, 4, and 8 CCEs to 2, 2, 1, 1; and the number of blind detections of the new DCI format is configured as 4, 4, 1, 1.
  • the number of blind checks of the first UE may be related to the capabilities of the UE.
  • the UE may also need to report whether the receiver of the UE has the interference suppression capability of the advanced receiver. For example, the UE may report that the UE does not have the capability of an advanced receiver; or the UE may report that the UE has the capability of an advanced receiver, but cannot use the advanced receiver and the legacy receiver simultaneously in the same subframe. Or, the UE may report the transmitter. The Ue may simultaneously apply the advanced receiver and the legacy receiver in the same subframe. The transmitter can configure a reasonable DCI decoding mode for the UE according to the information reported by the UE.
  • the ratio of the UE of the conventional receiver type to the UE of the advanced receiver type depends on the load of the system and may vary frequently. Data traffic is also bursty and changes frequently in the network.
  • the transmitter selects an appropriate DCI type for the first UE based on the cell load, the system traffic, and the UE capacity.
  • the first UE is interfered by the interference signals of the third UE and the fourth UE, respectively.
  • the first UE may first cancel the interference of the third UE signal, and then cancel the interference of the fourth UE signal.
  • the demodulation of the third UE signal is interfered by the fourth UE signal.
  • the first UE may first cancel the interference of the fourth UE signal, and then cancel the interference of the third UE signal, and the third UE signal demodulation is not interfered by the fourth UE signal.
  • the demodulation order has an influence on the signal-to-noise ratio (in English: Signal Noise Ratio, SNR for short), and the transmitter, such as the base station, also selects the corresponding demodulation sequence according to its expected demodulation sequence.
  • Modulation and coding scheme in English: modulation/coding scheme, referred to as: MCS.
  • MCS modulation/coding scheme
  • the demodulation order of the UE should be consistent with the expected timing of the transmitter scheduling, so the transmitter can notify the sequence of the demodulated signals of the UE side.
  • the UE for example, first cancels the third UE signal and then cancels the fourth UE signal, or first eliminates the fourth UE signal and then cancels the third UE signal.
  • the DCI of the first UE may always include parameters of the interference signal it receives.
  • the parameter of the interference signal received by the receiver includes one or any combination of the following parameters.
  • the parameters of the interference signal may also include other parameters, as listed below:
  • CRS Cell-specific reference signals
  • mapping scheme (in English: mapping scheme);
  • the channel state information measurement reference signal (English: Channel State Information Reference Signal, referred to as: CSI-RS) resource information
  • the CSI-RS resource includes zero-power CSI-RS resource power and non-zero-power CSI-RS resources;
  • the MCS may notify the first UE by dynamically signaling the MCS of the second UE by using the PDCCH of the first UE or the Enhanced Physical Downlink Control Channel (English: Enhanced Physical Downlink Control Channel, EPDCCH);
  • the rank indication in English: rank indication, abbreviated as: RI
  • the precoding matrix indicator in English: precoding matrix indicator, referred to as: PMI
  • the scrambling code information which may be the indication information of the scrambling code used, for example, may be a scrambling ID (Scrambling ID) or a virtual cell identifier (in English: virtual cell ID, simply: VCID);
  • the mapping scheme refers to a mapping pattern of CRS to time/frequency.
  • the CRSs of different cells in the LTE system have different displacements in the frequency domain for their cell Cell_IDs (in English: frequency shift).
  • CRSs are mapped on different resource elements (English: resource element).
  • the mapping scheme reflects the resource mapping of CRS condition.
  • the PDSCH signal transmitted in another cell is mapped around the CRS signal, and the resource element carrying the CRS is not used to transmit other signals, so the CRS information also transmits the mapping of the PDSCH in the time domain/frequency domain.
  • the transmitter may send the MCS of the second UE to the first UE, or may send the difference between the MCS of the second UE and the MCS of the first UE to the first UE, so that the first UE determines the second UE. MCS.
  • the embodiment of the present invention may use a subset constraint (in English: subset restriction) ) means to indicate the parameters of the interference signal.
  • the subset constraint mode means that the parameters of a group of possible interference signals of the second UE are stored in a parameter subset in advance, and the content of the subset may be sent to the first UE by using high layer signaling. .
  • the index information of the parameter of the interference signal in the parameter subset may be sent to the first UE, so that the first UE according to the index information Obtain the corresponding parameters in the parameter subset.
  • one parameter subset contains a set of parameters that may be used by the second UE, and the types of all parameters included in one parameter subset are the same.
  • the indication information may be sent to the first UE, where the indication information is used, in order to reduce the amount of the information of the second UE, in order to reduce the amount of information to be transmitted.
  • the transmitter may send first indication information to the first UE, where the first indication information is used to indicate one or any combination of the following:
  • the number of antenna port CRSs of the cell where the second UE is located and the mapping scheme are the same as those of the cell where the first UE is located;
  • the MSBFN subframe configuration of the cell where the second UE is located is the same as the cell where the first UE is located;
  • the PDSCH start symbol position of the cell where the second UE is located is the same as the cell where the first UE is located;
  • the mapping scheme of the signal of the second UE is the same as the mapping scheme of the signal of the first UE.
  • the parameters of the interference signals used by different types of receivers may be different, so preferably, if it is determined that the control information sent to the first UE includes interference,
  • the type of the parameter included in the parameter of the interference signal of the second UE that needs to be sent to the first UE may be determined according to the type of the receiver of the first UE.
  • the first way the transmitter can separately transmit the parameters of the interference signal received by the receiver to the receiver of the first UE through semi-static signaling.
  • the use of semi-static signaling to transmit the parameters of the interference signal received by the receiver to the receiver means that the parameters of the interference signal received by the receiver change over a relatively long period of time, such as in dozens or Signaling is sent once within a time range of several hundred subframes, and the frequency of the parameters of the interference signal received by the transmitter to transmit a new receiver is low, in accordance with The characteristics of the semi-static notification, for example, every tens or hundreds of sub-frames, the transmitter sends the receiver a parameter of the interference signal received by the receiver.
  • one possible semi-static indication mode is the RRC signaling mode.
  • the second way the transmitter can separately send the parameters of the interference signal received by the receiver to the receiver of the first UE through dynamic signaling.
  • the dynamic signaling refers to signaling that can be dynamically transmitted.
  • the use of dynamic signaling to transmit the parameters of the interference signal received by the receiver to the receiver means that the signaling of the parameter of the interference signal received by the receiver for transmitting to the receiver is dynamically transmitted, for example in each sub-
  • the signaling may be sent in the frame, so that the receiver performs interference suppression according to the parameters of the interference signal received by the receiver according to the parameters of the interference signal received by the receiver in the current scheduling period.
  • such Dynamic signaling is typically PDCCH or EPDCCH transmission.
  • the parameters of the interfering signal can be carried in the DCI to form a new DCI format.
  • the new format DCI is transmitted to the receiver of the first UE through the PDCCH.
  • the type of DCI carrying the parameter including the interference signal is referred to as the type of the second type DCI
  • the type of the DCI carrying the parameter not including the interference signal is referred to as the type of the first type DCI.
  • Other names may also be defined.
  • the DCI format corresponding to the type of the first type of DCI is referred to as a traditional DCI format, or the DCI A format
  • the DCI format corresponding to the type of the second type of DCI is referred to as a new DCI format, or Called the DCI B format.
  • the third way the transmitter sends part of the information of the interference signal received by the receiver to the receiver through dynamic signaling, and transmits the remaining part of the parameters of the interference signal to the receiver through semi-static signaling.
  • the transmitter sends part of the parameters of the interference signal received by the receiver to the receiver through dynamic signaling, and the rest of the parameters of the interference signal received by the receiver through semi-static signaling
  • the sending of the partial information to the receiver specifically means that the transmitter sends the part of the parameter of the interference signal received by the receiver that is frequently in a variable state to the receiver through dynamic signaling, for example, in each subframe. Signaling, so that the receiver performs interference suppression according to the parameters of the interference signal received by the receiver in the current scheduling period according to the parameters of the interference signal received by the receiver.
  • the transmitter transmits the remaining information in the parameters of the interference signal received by the receiver, that is, the information that changes over a relatively long period of time, by means of semi-static signaling, such as in tens or hundreds of subframes. Sent once within the time range.
  • One possible hybrid scheme is to provide a set of its configuration through high-level signaling for the parameters of the interference signals received by some specific receivers, and send them in a semi-static manner.
  • the first UE performs a blind check on the configured subset to obtain parameters of the actual interference signal.
  • This scheme reduces the signaling load of the parameters of the interference signal in the DCI. Taking the parameters of the interference signal with 16 configuration possibilities as an example, if the semi-static signaling configures a subset of the four possible configurations for the parameters of the interference signal, only 2 bits are occupied in the DCI, and Not 4 bits.
  • the transmitter can flexibly and selectively transmit the first type DCI and/or the second type DCI.
  • the interference suppression can be performed by using the parameters of the interference signal received by the receiver included in the received DCI corresponding to the type of the DCI, and the interference is improved.
  • the transmitter can selectively transmit the DCI corresponding to the type of the first type of DCI, due to the first type of DCI.
  • the parameters of the interference signal received by the receiver are not included, thereby reducing the load of the data transmission and further reducing the complexity of processing the data by the receiver.
  • FIG. 2 exemplarily shows a schematic flowchart of a method for receiving control information according to an embodiment of the present invention.
  • an embodiment of the present invention provides a control information receiving method, as shown in FIG. 2, including the following steps:
  • Step 201 Receive a DCI corresponding to a DCI type selected by a transmitter, where the DCI type includes a type of a first type of DCI and/or a type of a second type of DCI, where the second type of DCI includes interference received by the receiver.
  • Step 202 Decode the received DCI.
  • the parameters of the interference signal received by the receiver are not included in the first type of DCI.
  • the specific implementation manner in which the transmitter selects the DCI type is not described herein again as described above.
  • the receiver determines the type of DCI selected by the transmitter in the following preferred ways:
  • Manner 1 The received DCI is decoded according to the received indication information of the selected DCI type.
  • the indication information indicating the DCI type selected by the transmitter may be sent, so that after receiving the indication information, the receiver determines the type of DCI sent by the transmitter. And decoding the received DCI according to the determined DCI type.
  • the base station in the LTE determines and sends the indication information for indicating the DCI type selected by the transmitter, and further indicates the DCI type that the receiver needs to perform blind detection, and the signaling of the indication information can be implemented by using RRC signaling. .
  • the received DCI is decoded according to a pre-agreed DCI type.
  • both the transmitter and the receiver are known by the standard pre-defined DCI type. Then, the transmitter no longer needs to additionally send indication information indicating the type of DCI selected by the transmitter.
  • the receiver receives the DCI corresponding to the DCI type, the receiver directly passes the pre-agreed DCI according to the pre-agreed DCI type.
  • the coding mode corresponding to the type decodes the DCI. For example, if the DCI type is pre-agreed as the second type of DCI, the receiver decodes the received DCI according to the decoding mode in which the second type of DCI can be decoded.
  • the receiver decodes the received DCI according to a decoding mode in which the first type of DCI can be decoded. If the DCI type is pre-agreed as the first type DCI and the second type DCI, the receiver decodes the received DCI according to a decoding mode in which the first type DCI and the second type DCI can be decoded.
  • the DCI type corresponding to the system parameter is determined, and the received DCI is decoded according to the determined DCI type.
  • the mapping relationship may be specific to the receiver of the first UE.
  • the system parameter may be a system parameter carried in the information sent by the transmitter, such as a subframe number, etc.
  • the receiver can determine the DCI type corresponding to the system parameter carried in the currently received information by using the system parameter and the received mapping relationship between the DCI type and the system parameter, and further receiving the receiver according to the DCI type.
  • the determined DCI type decodes the received DCI by the decoding mode corresponding to the DCI type.
  • the DCI type corresponding to the system parameter is determined according to the pre-agreed system parameter and the mapping relationship between the DCI type and the system parameter, and the received DCI is decoded according to the determined DCI type.
  • the mapping relationship may be specific to the receiver of the first UE.
  • the mapping relationship between the DCI type and the system parameters may be pre-agreed in the standard, and both the transmitter and the receiver know the pre-agreed mapping relationship.
  • the system parameter can be a system parameter carried in the information sent by the transmitter, such as a subframe number.
  • the receiver can determine the DCI type corresponding to the system parameter carried in the currently received information by using the system parameter and the mapping relationship between the pre-agreed DCI type and the system parameter, and further receiving the receiver according to the DCI type.
  • the determined DCI type decodes the received DCI by the decoding mode corresponding to the DCI type.
  • the DCI type corresponding to the received DCI is determined according to the correspondence between the pre-agreed subframe number and the DCI type, and the received subframe number corresponding to the DCI, and the received DCI type is received according to the determined DCI type.
  • the DCI is decoded.
  • the receiver selects the type of DCI for the subframes in the subframe group in units of subframe groups. Specifically, the receiver selects a type of the first group of DCIs for the first group of subframes, and selects a type of the second group of DCIs for the second group of subframes; the first group of subframes and the second group of subframes are in time Do not overlap.
  • the type of the first group of DCIs is a first type of DCI
  • the types of the second group of DCIs are a first type of DCI and a second type of DCI.
  • the first group of subframes is subframe 1 and subframe 6
  • the second group of subframes is subframe 2 and subframe 4.
  • the receiver determines the DCI type corresponding to the received DCI according to the correspondence between the pre-agreed subframe number and the DCI type, and the received subframe number corresponding to the DCI, and receives the DCI according to the determined DCI type.
  • the DCI is decoded.
  • the received DCI is decoded according to the type of the receiver.
  • the advanced UE has the interference suppression capability, and the first UE decodes the received DCI according to the decoding mode corresponding to the second type of DCI.
  • the obtained parameters of the interference information included in the second type of DCI perform interference suppression.
  • the receiver of the first UE is a conventional receiver, since the legacy receiver does not have the interference suppression capability, the first UE decodes the received DCI according to the decoding mode corresponding to the first type of DCI.
  • the DCI type is determined according to any one of the above six preferred manners. Further, the receiver decodes the DCI corresponding to the DCI type according to the decoding mode corresponding to the determined DCI type.
  • the receiver determines that the DCI type selected by the transmitter is the first type of DCI, and the receiver can decode the first type of DCI using the coding mode corresponding to the first type of DCI; the receiver determines the transmitter selection.
  • DCI type is second For class DCI, the receiver can use the coding mode corresponding to the second type of DCI to decode the second type of DCI; the receiver determines that the DCI type selected by the transmitter is the first type DCI and the second type DCI, then the receiver A coding mode corresponding to the first type DCI or the second type DCI capable of simultaneously decoding the first type DCI and the second type DCI may be used.
  • the coding mode corresponding to the DCI type includes any one of the following modes: detecting and decoding the first type of DCI, detecting and decoding the second type of DCI, detecting and decoding the first type of DCI, and The second type of DCI.
  • the coding mode corresponding to the first type of DCI is any one of two coding modes: detecting and decoding the first type of DCI, detecting and decoding the first type of DCI, and the second type. DCI.
  • the coding mode corresponding to the second type of DCI is any one of two coding modes: detecting and decoding the second type of DCI, detecting and decoding the first type of DCI, and the second type. DCI.
  • the decoding mode of simultaneously detecting and decoding the first type of DCI and the second type of DCI is a decoding mode capable of simultaneously decoding the first type of DCI and the second type of DCI.
  • the embodiment of the present invention may provide that if the first UE parses out the parameters of the interference signal in the second type of DCI, the receiver The received interference signal performs interference suppression, otherwise, interference suppression is not performed on the interference signal received by the receiver.
  • the receiver of the first UE in the embodiment of the present invention may need to monitor and decode multiple types of DCI, such as the second type DCI and the first type DCI, which undoubtedly increases the complexity of the receiver blind detection of the first UE. degree.
  • the receiver determines the number of blind detections corresponding to each type of DCI, and the following two methods are available:
  • the indication information for indicating the number of blind detections corresponding to each type of DCI is received, and each type of DCI is blindly checked according to the indication information of the number of blind detections corresponding to each type of DCI.
  • the transmitter appropriately configures the number of blind detections for each type of DCI, and directly sends an instruction of the number of blind detections to the receiver of the first UE; or sends information for indicating the number of blind detections of the first UE to First UE.
  • each type of DCI is blindly checked according to the number of blind checks corresponding to each type of DCI pre-agreed.
  • the number of blind detections corresponding to each type of DCI can be predetermined in the standard, and both the transmitter and the receiver are in a known state.
  • the transmitter can blindly check each type of DCI according to the number of blind checks corresponding to each type of DCI pre-agreed.
  • the transmitter can flexibly and selectively transmit the first type DCI and/or the second type DCI.
  • the interference suppression can be performed by using the parameters of the interference signal received by the receiver included in the DCI corresponding to the type of the received DCI of the second type.
  • the receiver is improved in interference suppression; on the other hand, when the receiver does not perform interference suppression on the interference signal received by the receiver, the transmitter can selectively transmit the DCI corresponding to the type of the first type of DCI,
  • the type of DCI does not include the parameters of the interference signal received by the receiver, thereby reducing the load on the data transmission and further reducing the receiver. Handling the complexity of the data.
  • FIG. 3 is a schematic structural diagram of a transmitter according to an embodiment of the present invention.
  • FIG. 3 a schematic structural diagram of a transmitter provided by an embodiment of the present invention, as shown in FIG. 3, is used to execute the foregoing method flow.
  • the processing unit 301 and the sending unit 302 are included:
  • the processing unit 301 is configured to select a downlink control information DCI type, where the DCI type includes a type of a first type of DCI and/or a type of a second type of DCI, where the second type of DCI includes an interference signal received by the receiver. parameter;
  • the sending unit 302 is configured to send the DCI corresponding to the selected DCI type.
  • the parameters of the interference signal received by the receiver are not included in the first type of DCI.
  • the processing unit 301 is specifically configured to:
  • the processing unit 301 is specifically configured to:
  • the DCI type is selected based on the receiver type and/or interference suppression scheme. Specifically, the following three options are included:
  • the DCI type is selected according to the type of the receiver, the DCI type is selected according to the interference suppression scheme, and the DCI type is selected according to the receiver type and the interference suppression scheme.
  • the processing unit 301 is further configured to:
  • the sending unit 302 is further configured to:
  • the indication information indicating the number of blind detections corresponding to each type of DCI is transmitted.
  • the sending unit 302 is further configured to:
  • the indication information indicating the type of DCI selected by the transmitter is transmitted.
  • the processing unit 301 is further configured to:
  • the sending unit 302 is further configured to:
  • the sending unit 302 is specifically configured to:
  • mapping relationship between the DCI type and system parameters is sent through static signaling.
  • the processing unit 301 is specifically configured to:
  • the type of DCI is selected for the subframes in the subframe group in units of subframe groups. Specifically, the type of the first group of DCIs is selected for the first group of subframes, and the type of the second group of DCIs is selected for the second group of subframes; the first group of subframes and the second group of subframes do not overlap in time. .
  • the transmitter can flexibly selectively send the first type of DCI and/or the second type. DCI.
  • the interference suppression can be performed by using the parameters of the interference signal received by the receiver included in the DCI corresponding to the type of the received DCI of the second type.
  • the receiver performs the interference suppression.
  • the transmitter can selectively transmit the DCI corresponding to the type of the first type of DCI, because the first type
  • the DCI does not include the parameters of the interference signal received by the receiver, thereby reducing the load on the data transmission and further reducing the complexity of processing the data by the receiver.
  • FIG. 4 is a schematic structural diagram of a receiver according to an embodiment of the present invention.
  • FIG. 4 a schematic structural diagram of a receiver provided by an embodiment of the present invention is shown in FIG.
  • the receiving unit 401 and the processing unit 402 are included:
  • the receiving unit 401 is configured to receive a DCI corresponding to the downlink control information DCI type selected by the transmitter, where the DCI type includes a type of the first type of DCI and/or a type of the second type of DCI, where the second type of DCI includes the The parameters of the interference signal received by the receiver;
  • the processing unit 402 is configured to decode the received DCI.
  • the parameters of the interference signal received by the receiver are not included in the first type of DCI.
  • processing unit 402 is further configured to:
  • Each type of DCI is blindly checked according to the received indication information of the number of blind detections corresponding to each type of DCI.
  • processing unit 402 is further configured to:
  • Each type of DCI is blindly checked according to the number of blind checks corresponding to each type of DCI pre-agreed.
  • processing unit 402 is further configured to:
  • the received DCI is decoded according to the received indication information of the DCI type selected by the transmitter.
  • processing unit 402 is further configured to:
  • the received DCI is decoded according to a pre-agreed DCI type.
  • processing unit 402 is further configured to:
  • the DCI type corresponding to the system parameter is determined, and the received DCI is decoded according to the determined DCI decoding mode corresponding to the DCI type.
  • processing unit 402 is further configured to:
  • the DCI type corresponding to the system parameter is determined according to the pre-agreed system parameter and the mapping relationship between the DCI type and the system parameter, and the received DCI is decoded according to the determined DCI decoding mode corresponding to the DCI type.
  • processing unit 402 is specifically configured to:
  • processing unit 402 is specifically configured to:
  • the received DCI is decoded according to the type of receiver.
  • the coding mode corresponding to the DCI type includes any one of the following modes:
  • the first type of DCI and the second type of DCI are detected and decoded.
  • the transmitter can flexibly and selectively transmit the first type DCI and/or the second type DCI.
  • the interference suppression can be performed by using the parameters of the interference signal received by the receiver included in the DCI corresponding to the type of the received DCI of the second type.
  • the receiver performs the interference suppression.
  • the transmitter can selectively transmit the DCI corresponding to the type of the first type of DCI, because the first type
  • the DCI does not include the parameters of the interference signal received by the receiver, thereby reducing the load on the data transmission and further reducing the complexity of processing the data by the receiver.
  • FIG. 5 is a schematic structural diagram of a transmitter according to an embodiment of the present invention.
  • FIG. 5 a schematic structural diagram of a transmitter provided by an embodiment of the present invention, as shown in FIG. 5, is used to execute the foregoing method flow.
  • the processor 501, the transceiver 502 and the memory 503 are included:
  • the processor 501 is configured to read a program in the memory 503 and perform the following process:
  • the DCI type includes a type of the first type of DCI and/or a type of the second type of DCI
  • the second type of DCI includes a parameter of the interference signal received by the receiver
  • the transceiver 502 Send the DCI corresponding to the selected DCI type.
  • the transceiver 502 is configured to send the DCI corresponding to the selected DCI type under the control of the processor 501.
  • the parameters of the interference signal received by the receiver are not included in the first type of DCI.
  • the processor 501 is specifically configured to:
  • the processor 501 is specifically configured to:
  • the DCI type is selected based on the receiver type and/or interference suppression scheme. Specifically, the following three options are included:
  • the DCI type is selected according to the type of the receiver, the DCI type is selected according to the interference suppression scheme, and the DCI type is selected according to the receiver type and the interference suppression scheme.
  • the processor 501 is further configured to:
  • the transceiver 502 is further configured to:
  • the indication information indicating the number of blind detections corresponding to each type of DCI is transmitted.
  • the transceiver 502 is further configured to:
  • the indication information indicating the selected DCI type is transmitted.
  • the processor 501 is further configured to:
  • the transceiver 502 is further configured to:
  • the transceiver 502 is specifically configured to:
  • mapping relationship between the DCI type and system parameters is sent through static signaling.
  • the processor 501 is specifically configured to:
  • the type of DCI is selected for the subframes in the subframe group in units of subframe groups. Specifically, the type of the first group of DCIs is selected for the first group of subframes, and the type of the second group of DCIs is selected for the second group of subframes; the first group of subframes and the second group of subframes do not overlap in time. .
  • the bus architecture may include any number of interconnected buses and bridges, and the various circuits of the memory represented by the processor 501 and the memory represented by the memory 503 are linked together via the bus interface 504. .
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 502 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 501 is responsible for managing the bus architecture and general processing, and the memory 503 can store data used by the processor 501 in performing operations.
  • the transmitter can flexibly selectively send the first type DCI and/or the second type DCI.
  • the interference suppression can be performed by using the parameters of the interference signal received by the receiver included in the DCI corresponding to the type of the received DCI of the second type.
  • the receiver performs the interference suppression.
  • the transmitter can selectively transmit the DCI corresponding to the type of the first type of DCI, because the first type
  • the DCI does not include the parameters of the interference signal received by the receiver, thereby reducing the load on the data transmission and further reducing the complexity of processing the data by the receiver.
  • FIG. 6 is a schematic structural diagram of a receiver according to an embodiment of the present invention.
  • FIG. 6 a schematic structural diagram of a receiver provided by an embodiment of the present invention is shown in FIG. 6 for performing the foregoing method flow.
  • the transceiver 601, the processor 602 and the memory 603 are included:
  • the transceiver 601 is configured to receive, by the processor 602, a DCI corresponding to a downlink control information DCI type selected by the transmitter, where the DCI type includes a type of the first type of DCI and/or a type of the second type of DCI.
  • the second The class DCI includes parameters of the interference signal received by the receiver; the DCI received by the transceiver 601 is decoded.
  • the parameters of the interference signal received by the receiver are not included in the first type of DCI.
  • the processor 602 is configured to read a program in the memory 603 and decode the received DCI.
  • the processor 602 is further configured to:
  • Each type of DCI is blindly checked according to the received indication information of the number of blind detections corresponding to each type of DCI.
  • the processor 602 is further configured to:
  • Each type of DCI is blindly checked according to the number of blind checks corresponding to each type of DCI pre-agreed.
  • the processor 602 is further configured to:
  • the received DCI is decoded according to the received indication information of the DCI type selected by the transmitter.
  • the processor 602 is further configured to:
  • the received DCI is decoded according to a pre-agreed DCI type.
  • the processor 602 is further configured to:
  • the DCI type corresponding to the system parameter is determined according to the system parameter and the mapping relationship between the received DCI type and the system parameter, and the received DCI is decoded according to the determined DCI decoding mode corresponding to the DCI type.
  • the processor 602 is further configured to:
  • the processor 602 is specifically configured to:
  • the processor 602 is specifically configured to:
  • the received DCI is decoded according to the type of receiver.
  • the coding mode corresponding to the DCI type includes any one of the following modes:
  • the first type of DCI and the second type of DCI are detected and decoded.
  • the bus architecture may include any number of interconnected buses and bridges, and the various circuits of the memory represented by the processor 602 and the memory represented by the memory 603 are linked by the bus interface 604. together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 601 can be a plurality of components, including a transmitter and a receiver, provided for use in the transmission medium A unit that communicates with various other devices.
  • the processor 602 is responsible for managing the bus architecture and general processing, and the memory 603 can store data used by the processor 602 in performing operations.
  • the transmitter can flexibly and selectively transmit the first type DCI and/or the second type DCI.
  • the interference suppression can be performed by using the parameters of the interference signal received by the receiver included in the DCI corresponding to the type of the received DCI of the second type.
  • the receiver performs the interference suppression.
  • the transmitter can selectively transmit the DCI corresponding to the type of the first type of DCI, because the first type
  • the DCI does not include the parameters of the interference signal received by the receiver, thereby reducing the load on the data transmission and further reducing the complexity of processing the data by the receiver.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请实施例涉及通信领域,尤其涉及一种控制信息发送方法和接收方法及发射机、接收机,用以向接收机发送DCI类型对应的DCI,提高接收机进行干扰抑制的简便性。本申请实施例中,发射机灵活地选择性地发送第一类DCI和/或第二类DCI。一方面接收机对接收到的干扰信号进行干扰抑制时,则可利用接收到的第二类DCI的类型对应的DCI中包括干扰信号的参数进行干扰抑制,提高了接收机进行干扰抑制的简便性;另一方面,当接收机不对其接收到的干扰信号进行干扰抑制时,发射机可发送第一类DCI的类型对应的DCI,由于第一类DCI中不包括干扰信号的参数,从而减少了数据传输的负荷量,进一步降低了接收机处理数据的复杂度。

Description

一种控制信息发送方法和接收方法及发射机、接收机
本申请要求在2015年04月30日提交中国专利局、申请号为201510217944.9、发明名称为“一种控制信息发送方法和接收方法及发射机、接收机”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,尤其涉及一种控制信息发送方法和接收方法及发射机、接收机。
背景技术
无线蜂窝通信系统中的主要性能限制因素是干扰。干扰有两种来源,小区内干扰(英文为:intra-cell interference)和小区间干扰(英文为:inter-cell interference)。
小区间干扰是因为邻小区的发射机(比如基站)在同样的频率下调度(英文为schedule)了邻小区其他的用户设备(英文为:User Equipment,简称为:UE)。在不同小区没有协作多点(英文为:coordinated multi-point,简称为:COMP)小区协作的时候,小区间干扰对小区边缘的UE的影响较大。
小区内干扰主要来自于多用户多入多出(英文为:Multi-User Multiple-Input Multiple-Output,简称为:MU-MIMO)与目标UE配对的干扰UE。MU-MIMO是无线通信系统中一种重要的传输方式。在一个小区中,一个发射机可以调度多个UE在相同的时域和/或频域资源进行发送或传输,形成UE对。在一个UE对中,对不同UE采用不同的波束赋形(英文为:beamforming),利用UE在空域上的不同位置实现多址接入。如果一个UE的波束赋形矩阵与另一个UE的信道正交性比较好,则小区内干扰可以有所降低。另外可通过功率的方式为不同UE配置不同的功率,或者通过扩展码的方式为不同UE配置不同的扩展码,UE通过高级接收机抑制干扰。现有系统的MU-MIMO技术是基于发射机调度实现的,发射机动态为目标UE调度配对UE,配对UE对目标UE的干扰可能为小区内干扰,也可能为小区间干扰。
随着技术的进步,相对于不具有干扰抑制能力的传统接收机而言,出现了具有干扰抑制能力的高级接收机,目标UE可使用高级接收机实现对配对UE的干扰抑制,以提高目标UE的信号接收性能。
现有系统的MU-MIMO技术是基于网络侧(比如eNB)调度实现的,MU-MIMO配对UE中的UE如果试图对其收到的干扰信号进行干扰抑制,则必须通过复杂度较高的操作流程。
发明内容
本发明实施例提供一种控制信息发送方法和接收方法及发射机、接收机,用以向接收机发送DCI类型对应的DCI,接收机可通过对第二类DCI对应的DCI进行译码来获取接 收机收到的干扰信号的参数,利用干扰信号的参数进行干扰抑制,提高接收机进行干扰抑制的简便性。
本发明实施例提供一种控制信息发送方法,包括以下步骤:
选择下行控制信息DCI类型;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;
发送所选择的DCI类型对应的DCI。
较佳的,该选择DCI类型,包括:
根据接收机类型和/或干扰抑制方案选择DCI类型。
较佳的,该选择DCI类型,包括:
通过半静态方式或者动态方式选择DCI类型。
较佳的,还包括:
确定每种类型的DCI对应的盲检次数;
发送用于指示每种类型的DCI对应的盲检次数的指示信息。
较佳的,还包括:
发送用于指示所选择的DCI类型的指示信息。
较佳的,还包括:
建立该DCI类型与系统参数的映射关系;
发送该DCI类型与系统参数的映射关系。
较佳的,该发送该DCI类型与系统参数的映射关系,具体包括:
通过动态信令发送该DCI类型与系统参数的映射关系;或者
通过半静态信令发送该DCI类型与系统参数的映射关系;或者
通过静态信令发送该DCI类型与系统参数的映射关系。
较佳的,该选择DCI类型,包括:
以子帧组为单位,为子帧组内的子帧选择DCI的类型。
本发明实施例提供一种控制信息接收方法,包括以下步骤:
接收发射机所选择的下行控制信息DCI类型对应的DCI;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;
对接收到的该DCI进行译码。
较佳的,还包括:
接收用于指示每种类型的DCI对应的盲检次数的指示信息,根据该每种类型的DCI对应的盲检次数的指示信息对每种类型的DCI进行盲检;或者
根据预先约定的每种类型的DCI对应的盲检次数对每种类型的DCI进行盲检。
较佳的,该对接收到的该DCI进行译码,具体包括:
根据接收到的DCI类型的指示信息对接收到的DCI进行译码;或者
根据预先约定的DCI类型对接收到的该DCI进行译码。
较佳的,该对接收到的该DCI进行译码,具体包括:
根据系统参数和接收到的该DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对接收到的DCI进行译码;或者
根据预先约定的系统参数和该DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对接收到的DCI进行译码。
较佳的,该对接收到的该DCI进行译码,具体包括:
根据预先约定的子帧号与该DCI类型的对应关系,以及接收到的DCI对应的子帧号,确定出接收到的DCI对应的DCI类型,根据确定出的该DCI类型对接收到的DCI进行译码。
较佳的,该对接收到的该DCI进行译码,具体包括:
根据接收机的类型对接收到的DCI进行译码。
较佳的,该DCI类型对应的译码模式包括以下任一种模式:
检测和译码该第一类DCI;
检测和译码该第二类DCI;
检测和译码该第一类DCI和该第二类DCI。
本发明实施例提供一种发射机,包括:
处理单元,用于选择下行控制信息DCI类型;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;
发送单元,用于发送所选择的DCI类型对应的DCI。
较佳的,该处理单元,具体用于:
根据接收机类型和/或干扰抑制方案选择DCI类型。
较佳的,该处理单元,具体用于:
通过半静态方式或动态方式选择DCI类型。
较佳的,该处理单元,还用于:
确定每种类型的DCI对应的盲检次数;
该发送单元,还用于:
发送用于指示每种类型的DCI对应的盲检次数的指示信息。
较佳的,该发送单元,还用于:
发送用于指示所选择的DCI类型的指示信息。
较佳的,该处理单元,还用于:
建立该DCI类型与系统参数的映射关系;
该发送单元,还用于:
发送该DCI类型与系统参数的映射关系。
较佳的,该发送单元,具体用于:
通过动态信令发送该DCI类型与系统参数的映射关系;或
通过半静态信令发送该DCI类型与系统参数的该映射关系;或
通过静态信令发送该DCI类型与系统参数的映射关系。
较佳的,该处理单元,具体用于:
以子帧组为单位,为子帧组内的子帧选择DCI的类型。
本发明实施例提供一种接收机,包括:
接收单元,用于接收发射机所选择的下行控制信息DCI类型对应的DCI;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;
处理单元,用于对接收到的该DCI进行译码。
较佳的,该处理单元,具体用于:
根据接收到的每种类型的DCI对应的盲检次数的指示信息对每种类型的DCI进行盲检;或者
根据预先约定的每种类型的DCI对应的盲检次数对每种类型的DCI进行盲检。
较佳的,该处理单元,具体用于:
根据接收到的DCI类型的指示信息对接收到的DCI进行译码;或者
根据预先约定的DCI类型对接收到的该DCI进行译码。
较佳的,该处理单元,具体用于:
根据系统参数和接收到的该DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对应DCI译码模式对接收到的DCI进行译码;或者
根据预先约定的系统参数和该DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对应DCI译码模式对接收到的DCI进行译码。
较佳的,该处理单元,具体用于:
根据预先约定的子帧号与该DCI类型的对应关系,以及接收到的DCI对应的子帧号,确定出接收到的DCI对应的DCI类型,根据确定出的该DCI类型对接收到的DCI进行译码。
较佳的,该处理单元,具体用于:
根据接收机的类型对接收到的DCI进行译码。
较佳的,该DCI类型对应的译码模式包括以下任一种模式:
检测和译码该第一类DCI;
检测和译码该第二类DCI;
检测和译码该第一类DCI和该第二类DCI。
本发明实施例提供的一种发射机,包括:
处理器,用于读取存储器中的程序,执行下列过程:
选择DCI类型;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;通过收发机502发送所选择的DCI类型对应的DCI;
收发机,用于在处理器的控制下发送所选择的DCI类型对应的DCI。
本发明实施例提供的一种接收机,包括:
收发机,用于在处理器的控制下接收发射机所选择的DCI类型对应的DCI;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;通过收发机接收到的该DCI进行译码;
处理器,用于读取存储器中的程序,对接收到的该DCI进行译码。
本发明的上述实施例中,发射机选择DCI类型,并发送所选择的DCI类型对应的DCI,DCI类型包括第一类DCI的类型和/或第二类DCI的类型,第一类DCI中不包括接收机收到的干扰信号的参数,第二类DCI包括接收机收到的干扰信号的参数。可见,发射机可灵活地选择性地发送第一类DCI和/或第二类DCI。如此,一方面,接收机对其接收到的干扰信号进行干扰抑制时,则可利用接收到的第二类DCI的类型对应的DCI中包括的该接收机收到的干扰信号的参数进行干扰抑制,提高了接收机进行干扰抑制的简便性;另一方面,当接收机不对其接收到的干扰信号进行干扰抑制时,发射机可选择性地发送第一类DCI的类型对应的DCI,由于第一类DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,进一步降低了接收机处理数据的复杂度。
附图说明
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简要介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种控制信息发送方法流程示意图;
图2为本发明实施例提供的一种控制信息接收方法流程示意图;
图3为本发明实施例提供的发射机的结构示意图;
图4为本发明实施例提供的用户设备的结构示意图;
图5为本发明实施例提供的另一种发射机的结构示意图;
图6为本发明实施例提供的另一种用户设备的结构示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步地详细描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
本发明实施例可适用于长期演进(英文为:Long Term Evolution,简称为LTE)系统或者LTE系统的演进系统。将本发明实施例应用于MU-MIMO场景下,如基于叠加编码的多用户传输等。
当然,本发明实施例不仅限于在LTE系统或者LTE系统的演进系统以及MU-MIMO场景下应用,在其他系统或场景下,如果某个UE的信号传输可能会受到其他UE的信号传输的干扰,则也可以采用本发明实施例来进行干扰抑制。例如用于目标UE对其他小区干扰的抑制,例如用于其他本小区用户干扰的抑制。
本发明实施例中UE的接收机分为传统接收机和高级接收机。和传统的接收机相比,高级接收机具有干扰抑制能力。高级接收机有如下几种:
干扰删除接收机:包括串行干扰删除(英文为:serial interference cancellation,简称为:SIC)接收机和并行干扰删除(英文为:Parallel interference cancellation,简称为:PIC)接收机。干扰删除接收机原理为:目标UE先解调出干扰UE的信号,然后重建干扰信号,并从接收信号中将该干扰UE的干扰信号进行删除,之后目标UE解调出该目标UE的信号。根据干扰删除接收机解调干扰UE信号的方式,可将干扰删除接收机分为符号级串行干扰删除接收机和码字级的干扰删除(英文为:codeword-level interference cancellation,简称为:CWIC)接收机。
最大似然(英文为:Maximum Likelihood,简称为:ML)接收机(或降低复杂度的ML接收机):工作原理为目标UE将目标UE的信号和干扰UE的信号联合起来进行ML(或降低复杂度的ML)解调,以提高目标UE信号的接收性能。
为描述方便,本发明实施例中定义第一UE和第二UE,第一UE为发射机所服务的UE,第二UE为该第一UE的干扰UE,即第二UE产生的信号为会对第一UE的接收机造成干扰的信号,本发明实施例中该第一UE和该第二UE可能互为小区内干扰或小区间干扰。本发明实施例对第一UE与第二UE处于相同小区或者处于不同小区不做进一步限定。第二UE的数量可以是一个也可以是多个。比如,第一UE和第二UE可以是MU-MIMO配对用户组中的UE。
本发明实施例中仅以向MU-MIMO配对用户组中的第一UE发送下行控制信息(英文 为:Downlink Control Information,简称为:DCI)为例描述。这里的第一UE可以是MU-MIMO配对用户组中的任何一个UE,该MU-MIMO配对用户组中除第一UE以外的UE均称为第二UE。通常情况下,当第一UE与第二UE为小区内干扰时,即为第一UE和第二UE服务的为同一个发射机,此时,针对一个MU-MIMO配对用户组中的每个UE,该同一个发射机均可按照本发明实施例提供的方式对第一UE和第二UE发送控制信息。当第一UE与第二UE为小区间干扰时,即为第一UE和第二UE服务的为不同的发射机,针对不同发射机,每个发射机均可对应向该发射机所服务器的UE发送控制信息,具体来说,为第一UE服务的发射机向第一UE发送控制信息,为第二UE服务的发射机向第二UE发送控制信息。
以下流程中,本发明实施例对发射机基于MU-MIMO技术进行UE调度的过程不做限制。此处仅列举一种基于MU-MIMO的调度过程。该过程中,UE进行信道估计,得到其与发射机之间的信道矩阵,然后向发射机反馈最大的信号与干扰加噪声比(英文为:Signal to Interference plus Noise Ratio,简称为:SINR)值对应的调制编码方案索引;发射机收集各UE反馈的索引值,根据各UE反馈的索引值以及进一步根据一定的准则(如正比公平准则)进行UE配对。多用户传输配对用户组中的UE的数量可以是两个,也可以是两个以上。
图1示例性示出本发明实施例提供的一种控制信息发送方法流程示意图。该流程在发射机实现,比如,可由发射机、基站或具有基站功能的发射机来执行。参见图1,本发明实施例提供的一种控制信息发送方法,包括以下步骤:
步骤101,选择DCI类型;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数。
步骤102,发送所选择的DCI类型对应的DCI。
本发明实施例中提供了两种DCI类型,该第二类DCI包括该接收机收到的干扰信号的参数,较佳的,该第一类DCI中不包括接收机收到的干扰信号的参数。上述步骤101中,可仅选择第一类DCI,或者仅选择第二DCI,或者同时选择第一类DCI和第二类DCI,并发送所选择的DCI类型对应的DCI。
一种优选的方式,通过半静态方式或者动态方式选择DCI类型。
举例来说,可存在以下四种情况:
第一种情况,UE可周期地或非周期地进行信道质量信息反馈,基站(发射机)根据UE的信道质量信息周期地或非周期地进行用户调度并确定第一UE所使用的接收机的类型。
第二种情况,基站周期地进行UE接收机类型的更新和DCI类型的更新,但当有新的用户接入小区时,触发基站为被调度的用户重新选择配对用户,接收机类型和DCI类型。
第三种情况,基站半静态地接收来自其他小区的干扰信号信息,根据这个干扰信息半静态地选择UE的接收机类型,从而通过半静态地方式选择UE的DCI类型。
第四种情况,基站可以动态地进行用户调度,并动态地选择用户的接收机类型和DCI类型,例如进行子帧级的调度。
较佳的,根据接收机类型和/或干扰抑制方案选择DCI类型。具体来说包括以下三种方案:
根据接收机类型选择DCI类型、根据干扰抑制方案选择DCI类型、根据接收机类型和干扰抑制方案选择DCI类型。
具体可根据一个或几个条件选择DCI类型,此处列举以下几个应用场景:
场景1:若第一UE的接收机为不具有干扰抑制能力的传统接收机,则选择第一类DCI。由于第一UE的接收机不具备干扰抑制能力,此时所发送的第一类DCI对应的DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,且降低了第一UE解析数据的复杂度。
场景2:若第一UE的接收机为具有干扰抑制能力的高级接收机,则选择第二类DCI。此时第一UE可通过发送的第二类DCI对应的DCI中包括的接收机收到的干扰信号的参数对第二UE的信号进行干扰抑制,从而提高第一UE的信号接收性能。
场景3:若干扰抑制方案为第一UE不对接收到的干扰信号进行干扰抑制,无论第一UE的接收机是高级接收机还是传统接收机,均选择第一类DCI。此时所发送的第一类DCI对应的DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,且降低了第一UE解析数据的复杂度。
场景4:若干扰抑制方案为第一UE对接收到的干扰信号进行干扰抑制,则选择第二类DCI。此时第一UE可通过发送的第二类DCI对应的DCI中包括的接收机收到的干扰信号的参数对第二UE的信号进行干扰抑制,从而提高第一UE的信号接收性能。
场景5:若干扰抑制方案为第一UE对接收到的干扰信号进行干扰抑制,且第一UE的接收机为高级接收机时,则选择第二类DCI。此时第一UE可通过发送的第二类DCI对应的DCI中包括的接收机收到的干扰信号的参数对第二UE的信号进行干扰抑制,从而提高第一UE的信号接收性能。
场景6:若干扰抑制方案为第一UE对接收到的干扰信号进行干扰抑制,但是第一UE的接收机为传统接收机时,则选择第一类DCI。此时所发送的第一类DCI对应的DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,且降低了第一UE解析数据的复杂度。
可见,本发明实施例中可自由选择第一类DCI和/或第二类DCI,并发送所选择DCI类型对应的DCI,并非针对所有接收机均发送相同的DCI,从而减少了网络数据传输的负 荷量,进一步降低了第一UE的接收机处理数据的复杂度。
本发明实施例中的干扰抑制方案可通过多种方式确定,如通过人为方式规定、由高层发射机制定之后并下发等,又或者由发射机根据第一UE所在小区的负载情况、系统流量或第一UE的容量等因素确定。
上述步骤102中,在无线通信系统(如LTE系统)中,第一UE的DCI通过下行控制信道提供给第一UE。下行控制信道与第一UE的下行数据信道可以独立地或联合地进行编码和发送。以第三代合作伙伴计划(英文为:The third Generation Partnership Project,简称为:3GPP)为例,第一UE的DCI,在物理下行控制信道(英文为:Physical Downlink Control Channel,简称为:PDCCH)上编码并发送。由于DCI承载使第一UE可以对其物理下行共享信道(英文为:Physical Downlink Shared Channel,简称为:PDSCH)进行解码的参数,因此在LTE系统中,PDCCH和PDSCH在相同的子帧上传输。第一UE需先对PDCCH译码获得DCI,之后利用DCI译码所获得的信息对PDSCH译码。
由于本发明实施例中发射机发送的DCI可能包括两种类型的DCI,因此本发明实施例中发射机选择出DCI类型之后,发送所选择的DCI类型对应的DCI。接收机接收到DCI之后,需要确定出发射机所发送的DCI类型,进一步根据所确定出的DCI类型对应的译码模式对接收到的DCI进行译码。
具体来说,接收机确定出发射机所选择的DCI类型可有以下几种优选的方式:
方式一,发送用于指示所选择的DCI类型的指示信息。
具体来说,发射机选择了DCI类型之后,可发送用于指示该发射机所选择的DCI类型的指示信息,以便使接收机接收到该指示信息之后,确定出发射机所发送的DCI的类型,并根据确定出的DCI类型对接收到的DCI进行译码。
具体实施中,LTE中基站决定并发送用于指示该发射机所选择的DCI类型的指示信息,进一步指示接收机需要盲检的DCI类型,此类指示信息的信令均可通过无线资源控制协议(英文为:Radio Resource control,简称为:RRC)信令实现。
方式二:预先约定DCI类型。
具体来说,通过标准预先定义DCI类型,预先定义的DCI类型在发射机和接收机均为已知状态。则发射机不再需要额外发送用于指示该发射机所选择的DCI类型的指示信息,当接收机接收到DCI类型对应的DCI时,接收机直接根据预先约定的DCI类型,通过预先约定的DCI类型对应的译码模式对DCI进行译码。举例来说,若预先约定DCI类型为第二类DCI,则接收机根据可译码出第二类DCI的译码模式对接收到的DCI进行译码。若预先约定DCI类型为第一类DCI,则接收机根据可译码出第一类DCI的译码模式对接收到的DCI进行译码。若预先约定DCI类型为第一类DCI和第二类DCI,则接收机根据可译码出第一类DCI和第二类DCI的译码模式对接收到的DCI进行译码。
方式三,发射机建立该DCI类型与系统参数的映射关系,发送该DCI类型与系统参数的映射关系。较佳的,该映射关系可为该第一UE的接收机专属。
具体来说,系统参数可为发射机所发送的信息中所携带的系统参数,如子帧号等。系统参数也可为发射机与接收机的整个通讯系统中的某个系统参数。当接收机接收到该DCI之后,可根据接收到的DCI类型与系统参数的映射关系,确定出当前系统参数对应的DCI类型,进一步接收机根据确定出的DCI类型,通过该DCI类型对应的译码模式对接收到的DCI进行译码。
方式四,预先约定DCI类型与系统参数的映射关系。较佳的,该映射关系可为该第一UE的接收机专属。
具体来说,可在标准中预先约定DCI类型与系统参数的映射关系,发射机和接收机均知道该预先约定的映射关系。系统参数为发射机所发送的信息中所携带的系统参数,如子帧号、帧号等,当接收机接收到该DCI之后,接收机可通过系统参数,以及预先约定的DCI类型与系统参数的映射关系,确定出当前系统参数对应的DCI类型,进一步接收机根据确定出的DCI类型,通过该DCI类型对应的译码模式对接收到的DCI进行译码。
方式五,在标准中预先约定子帧号与DCI类型的对应关系,该对应关系发射机和接收机均为已知状态。
接收机以子帧组为单位,为子帧组内的子帧选择DCI的类型。具体来说为第一组子帧选择第一组DCI的类型,为第二组子帧选择第二组DCI的类型;该第一组子帧和该第二组子帧在时间上不重叠。举例来说,第一组DCI的类型为第一类DCI,第二组DCI的类型为第一类DCI和第二类DCI。第一组子帧为子帧1和子帧6,第二组子帧为子帧2和子帧4。
而接收机根据预先约定的子帧号与该DCI类型的对应关系,以及接收到的DCI对应的子帧号,确定出接收到的DCI对应的DCI类型,根据确定出的该DCI类型对接收到的DCI进行译码。
方式六,根据接收机的类型对接收到的DCI进行译码。
具体来说,第一UE的接收机为高级接收机时,由于高级接收机具有干扰抑制能力,此时第一UE根据第二类DCI对应的译码模式对接收到的DCI进行译码,利用得到的第二类DCI中包括的干扰信息的参数进行干扰抑制。而当第一UE的接收机为传统接收机时,由于传统接收机不具有干扰抑制能力,因此,第一UE根据第一类DCI对应的译码模式对接收到的DCI进行译码。
根据上述六种优选的方式中的任一种确定出DCI类型,进一步,接收机根据该确定出的DCI类型对应的译码模式译码出该DCI类型对应的DCI。
具体来说,接收机确定出发射机选择的DCI类型为第一类DCI,则接收机可使用第一类DCI对应的译码模式来译码出第一类DCI;接收机确定出发射机选择的DCI类型为第二 类DCI,则接收机可使用第二类DCI对应的译码模式来译码出第二类DCI;接收机确定出发射机选择的DCI类型为第一类DCI和第二类DCI,则接收机可使用第一类DCI或第二类DCI对应的能同时译码出第一类DCI和第二类DCI的译码模式。
上述例子中,该DCI类型对应的译码模式包括以下任一种模式:检测和译码该第一类DCI、检测和译码该第二类DCI、检测和译码该第一类DCI和该第二类DCI。
具体来说,第一类DCI对应的译码模式为以下两种译码模式中的任一种:检测和译码该第一类DCI、检测和译码该第一类DCI和该第二类DCI。
具体来说,第二类DCI对应的译码模式为以下两种译码模式中的任一种:检测和译码该第二类DCI、检测和译码该第一类DCI和该第二类DCI。
而同时检测和译码该第一类DCI和该第二类DCI的译码模式则为能同时译码出第一类DCI和第二类DCI的译码模式。
优选的,当接收机需要同时译码第一类DCI和第二类DCI时,本发明实施例中可规定,若第一UE的接收机解析出第二类DCI中的干扰信号的参数,则对接收机所接收到的干扰信号进行干扰抑制,否则,则不对接收机所接收到的干扰信号进行干扰抑制。
上述方式三中,发射机建立该DCI类型与系统参数的映射关系之后,发送该DCI类型与系统参数的映射关系,具体包括以下三种途径中的任一种:
途径一:通过动态信令发送该DCI类型与系统参数的映射关系;
途径二:通过半静态信令发送该DCI类型与系统参数的映射关系;
途径三:通过静态信令发送该DCI类型与系统参数的映射关系。
上述途径一中,该动态信令是指可以动态发送的信令。采用动态信令发送该DCI类型与系统参数的映射关系是指:该DCI类型与系统参数的映射关系为动态发送,比如在每个子帧中可以发送该映射关系。
上述途径二中,采用半静态信令发送该DCI类型与系统参数的映射关系是指:该DCI类型与系统参数的映射关系在比较长的一段时间内变化,比如在几十个或者几百个子帧的时间幅度内信令发送一次,发射机发送新的映射关系的频率较低,符合半静态通知的特性,例如,每几十或几百子帧,发射机给接收机发送一次映射关系。在LTE系统中,一种可能的半静态指示方式为RRC信令方式。
上述途径三中:采用静态信令发送该DCI类型与系统参数的映射关系是指:该DCI类型与系统参数的映射关系不发生变化,发射机给接收机仅发送一次映射关系。
具体来说,一个第一UE的DCI发送可以使用多种编码速率。在LTE系统中,每个UE只能在一组有限的控制信道单元(Control Channel Element,CCE)位置上放置PDCCH。第一UE的DCI被编码、调制、映射到一个PDCCH上,该PDCCH的聚合等级可以是1,2,4或8个CCE。UE在搜索空间上对其PDCCH进行盲检,搜索空间就是UE寻找PDCCH 的CCE位置。UE的搜索空间中包含多个可能的候选PDCCH。不同的CCE聚合等级对应的待搜索候选PDCCH数可以不同。协议中进行了规定,例如对于聚合等级为1、2、4、8的PDCCH,聚合等级分别是6、6、2、2。第一UE通过在PDCCH搜索空间上针对不同的CCE聚合等级检测候选PDCCH来实现控制信号的盲检。
本发明实施例中的第一UE的接收机可能需要监测和译码多种类型的DCI,如第二类DCI和第一类DCI,此过程无疑增加了第一UE的接收机盲检的复杂度。较佳的,本发明实施例中针对每种类型的DCI,接收机确定每种类型的DCI对应的盲检次数,可通过以下两种方式:
第一种方式,发射机确定每种类型的DCI对应的盲检次数,发送用于指示每种类型的DCI对应的盲检次数的指示信息。
具体的,发射机为每种类型的DCI合理配置盲检次数,并直接将盲检次数的指令发送给第一UE的接收机;或者将用于指示第一UE的盲检次数的信息发送给第一UE。
第二种方式,预先约定每种类型的DCI对应的盲检次数。
具体来说,可在标准中预先约定每种类型的DCI对应的盲检次数,发射机和接收机均为已知状态。发射机可根据预先约定的每种类型的DCI对应的盲检次数,对每种类型的DCI进行盲检。
为了降低或限制盲检的次数,对于每个待监测和译码的DCI类型,如第一类DCI和第二类DCI,PDCCH聚合等级以及每个PDCCH聚合等级的待监测候选PDCCH数均可以由发射机进行配置或是在标准中进行规定。盲检次数可与聚合等级无关,也可与聚合等级相关。举例来说,发射机将聚合等级为1、2、4、8个CCE时的传统的DCI格式的盲检次数配置为2、2、1、1;而新的DCI格式的盲检次数配置为4、4、1、1。第一UE的盲检次数可能与UE的能力相关。
较佳的,本发明实施例中为了使发射机可以合理地选择DCI类型,UE可能还需要上报该UE的接收机是否具备高级接收机的干扰抑制能力。举例来说,UE可能上报发射机该UE不具备高级接收机的能力;或者UE可能上报发射机该UE具有高级接收机的能力,但无法在同一个子帧中同时使用高级接收机和传统接收机;或者,UE可能上报发射机该Ue可以在同一个子帧中同时应用高级接收机和传统接收机。发射机可根据UE上报的信息,为该UE配置一合理的DCI译码模式。
另一方面,传统接收机类型的UE和高级接收机类型的UE的比例取决于系统的负荷,而且可能会频繁的变化。数据流量也具有突发性,在网络中会频繁变化。为了降低DCI承载信息的负荷量,且同时增加发射机调度UE的灵活度,较佳的,发射机基于小区负载、系统流量和UE容量为第一UE选择适当的DCI类型。
作为另外一个实用例子,比如第一UE分别受到第三UE和第四UE的干扰信号的干 扰,则第一UE可以先消除第三UE信号的干扰,然后消除第四UE信号的干扰,此时第三UE信号的解调受到第四UE信号的干扰。或者第一UE可以先消除第四UE信号的干扰,然后消除第三UE信号的干扰,此时第三UE信号解调不受第四UE信号的干扰。由此可见,解调顺序对信号信噪比(英文为:Signal Noise Ratio,简称为:SNR)存在影响,发射机,如基站,在调度时也会根据其预期的解调顺序来选择相应的调制和编码方案(英文为:modulation/coding scheme,简称为:MCS)。在UE的接收机侧,为了保证解调的SNR和发射机调度预期的SNR匹配,UE的解调顺序应该和发射机调度时候的预期一致,所以发射机可以将UE侧解调信号的顺序通知UE,比如是先消除第三UE信号然后再消除第四UE信号,还是先消除第四UE信号再消除第三UE信号。
作为另外一种方式,第一UE的DCI可以总是包括其接收到的干扰信号的参数。
上述内容中,较佳的,接收机收到的干扰信号的参数包括以下参数中的一种或任意组合。本领域技术人员可知,干扰信号的参数也可包括其它参数,列举如下:
天线端口数量、小区专属参考信号(英文为:Cell-specific reference signals,简称为:CRS);
映射方案(英文为:mapping scheme);
信道状态信息测量参考信号(英文为:Channel State Information Reference Signal,简称为:CSI-RS)资源信息,CSI-RS资源包括零功率CSI-RS资源功率以及非零功率CSI-RS资源;
信号功率信息;
MCS,具体的,发射机可以通过第一UE的PDCCH或增强物理下行控制信道(英文为:EnhancedPhysical Downlink Control Channel,简称为:EPDCCH)将第二UE的MCS通过动态信令通知给第一UE;
秩指示(英文为:rank indication,简称为:RI),预编码矩阵指示(英文为:precoding matrix indicator,简称为:PMI);
扰码信息,可以是所使用的扰码的指示信息,比如,可以是扰码标识(Scrambling ID),或者是虚拟小区标识(英文为:virtual cell ID,简称为:VCID);
波束赋形矩阵;
发送功率;
预编码矩阵。
映射方案是指CRS到time/frequency的映射图案。LTE系统中不同小区的CRS针对其小区Cell_ID在频域上有不同的位移(英文为:frequency shift),相应于不同的frequency shift,CRS被映射在不同的资源单元(英文为:resource element)上,这样在不同小区CRS之间减少干扰,frequency shift的值对应于mod(CellID/6)。映射方案反映了CRS的资源映射情 况。另外一个小区中发送的PDSCH信号围绕着CRS信号来映射,承载CRS的resource element不用于发送其他信号,所以CRS的信息也相应传递了PDSCH在时域/频域的映射。
发射机可以将第二UE的MCS发送给第一UE,也可以将第二UE的MCS与第一UE的MCS之间的差值发送给第一UE,以使第一UE确定出第二UE的MCS。
当确定发送给第一UE的控制信息包括第二UE的干扰信号的参数时,为了减少发送给第一UE的数据量,优选地,本发明实施例可以使用子集约束(英文为:subset restriction)的方式来指示干扰信号的参数。
简单来说,该子集约束方式是指:预先将第二UE的一组可能的干扰信号的参数存储在一个参数子集中,可以通过高层信令将该子集的内容发送给该第一UE。这样,当向该第一UE发送第二UE的干扰信号的参数时,可将该干扰信号的参数在参数子集中的索引信息发送给该第一UE,以使该第一UE根据该索引信息在参数子集中获取对应的参数。优选地,一个参数子集中包含一组第二UE可能使用的参数,且一个参数子集中所包含的所有参数的种类相同。
进一步地,考虑到第二UE的某些参数可能与第一UE的参数相同,为了减少传输的信息量,本发明实施例中优选地,可向第一UE发送指示信息,该指示信息用于指示第二UE的某个类型或某些类型的参数与第一UE的同类参数的取值相同,以使第一UE根据自己的参数对第二UE的信号进行干扰抑制。
举例来说,发射机可向该第一UE发送第一指示信息,该第一指示信息用于指示以下内容之一或任意组合:
该第二UE所在小区的天线端口CRS数量以及映射方案与该第一UE所在小区的相同;
该第二UE所在小区的MSBFN子帧配置与该第一UE所在小区的相同;
该第二UE所在小区的PDSCH起始符号位置与该第一UE所在小区的相同;
该第二UE的信号的映射方案与该第一UE的信号的映射方案相同。
进一步地,考虑到UE进行干扰抑制需要的参数取决于接收机类型,不同类型的接收机采用的干扰信号的参数可能不一样,因此优选地,若确定出向第一UE发送的控制信息中包括干扰信号的参数时,则可根据该第一UE的接收机的类型,确定需要向该第一UE发送的该第二UE的干扰信号的参数所包括的参数的种类。
本发明实施例中接收机收到的干扰信号的参数可通过以下方式发送:
第一种方式:发射机可通过半静态信令将接收机收到的干扰信号的参数单独发送给第一UE的接收机。
具体来说,采用半静态信令将接收机收到的干扰信号的参数发送给接收机是指:接收机收到的干扰信号的参数在比较长的一段时间内变化,比如在几十个或者几百个子帧的时间幅度内信令发送一次,发射机发送新的接收机收到的干扰信号的参数的频率较低,符合 半静态通知的特性,例如,每几十或几百子帧,发射机给接收机发送一次接收机收到的干扰信号的参数。在LTE系统中,一种可能的半静态指示方式为RRC信令方式。
第二种方式:发射机可通过动态信令将接收机收到的干扰信号的参数单独发送给第一UE的接收机。
具体来说,该动态信令是指可以动态发送的信令。采用动态信令将接收机收到的干扰信号的参数发送给接收机是指:发射机用于给接收机发送的接收机收到的干扰信号的参数的信令为动态发送,比如在每个子帧中可以发送该信令,以使接收机根据接收机收到的干扰信号的参数,在当前调度周期内根据该接收机收到的干扰信号的参数进行干扰抑制,在LTE系统中,此类动态信令一般是PDCCH或EPDCCH发送。
例如可将该干扰信号的参数承载于DCI中,以形成新的DCI格式。并将新格式的DCI通过PDCCH发送给第一UE的接收机。本发明实施例中将承载包括干扰信号的参数的DCI的类型称为第二类DCI的类型,将所承载不包括干扰信号的参数的DCI的类型称为第一类DCI的类型。也可定义其它名称,如将第一类DCI的类型对应的DCI格式称为传统DCI格式,或称为DCI A格式,将第二类DCI的类型对应的DCI格式称为新的DCI格式,或称为DCI B格式。
第三种方式:发射机通过动态信令将接收机收到的干扰信号的参数中的部分信息发送给接收机,通过半静态信令将干扰信号的参数中的其余部分信息发送给接收机。
上述第三种方式中:发射机通过动态信令将接收机收到的干扰信号的参数中的部分信息发送给接收机,通过半静态信令将接收机收到的干扰信号的参数中的其余部分信息发送给接收机具体是指:发射机将接收机收到的干扰信号的参数中频繁处于变动状态的部分参数通过动态信令的方式向接收机发送,比如在每个子帧中可以发送该信令,以使接收机根据接收机收到的干扰信号的参数,在当前调度周期内根据该接收机收到的干扰信号的参数进行干扰抑制。而发射机将接收机收到的干扰信号的参数中其余部分信息,即在比较长的一段时间内变化的信息,通过半静态信令的方式发送,比如在几十个或者几百个子帧的时间幅度内发送一次。
一种可能的混合方案是,对于一些特定的接收机收到的干扰信号的参数,通过高层信令提供其配置的集合,通过半静态的方式发送。第一UE对该配置子集进行盲检,以获得实际的干扰信号的参数。该方案降低了DCI中的干扰信号的参数的信令负载。以有16种配置可能性的干扰信号的参数为例,假如半静态信令对于该干扰信号的参数配置了包含4个可能的配置的子集,则在DCI中只需要占用2个比特,而不是4个比特。
综上所述,本发明实施例中,发射机可灵活地、选择性地发送第一类DCI和/或第二类DCI。一方面,接收机对接收到的干扰信号进行干扰抑制时,则可利用接收到的第二类DCI的类型对应的DCI中包括的该接收机收到的干扰信号的参数进行干扰抑制,提高了接 收机进行干扰抑制的简便性;另一方面,当接收机不对接收到的干扰信号进行干扰抑制时,发射机可选择性地发送第一类DCI的类型对应的DCI,由于第一类DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,进一步降低了接收机处理数据的复杂度。
图2示例性示出了本发明实施例提供一种控制信息接收方法的流程示意图。
基于相同构思,本发明实施例提供一种控制信息接收方法,如图2所示,包括以下步骤:
步骤201,接收发射机所选择的DCI类型对应的DCI;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;
步骤202,对接收到的该DCI进行译码。
较佳的,该第一类DCI中不包括接收机收到的干扰信号的参数。发射机选择DCI类型的具体实施方式如前所述在此不再赘述。上述步骤202中,接收机对DCI进行译码时,需根据发射机所发送的DCI类型对接收到的DCI进行译码。具体来说,接收机确定出发射机所选择的DCI类型可有以下几种优选的方式:
方式一,根据接收到的所选择的DCI类型的指示信息对接收到的DCI进行译码。
具体来说,发射机选择了DCI类型之后,可发送用于指示该发射机所选择的DCI类型的指示信息,以便使接收机接收到该指示信息之后,确定出发射机所发送的DCI的类型,并根据确定出的DCI类型对接收到的DCI进行译码。
具体实施中,LTE中基站决定并发送用于指示该发射机所选择的DCI类型的指示信息,进一步指示接收机需要盲检的DCI类型,此类指示信息的信令均可通过RRC信令实现。
方式二,根据预先约定的DCI类型对接收到的该DCI进行译码。
具体来说,通过标准预先定义DCI类型,发射机和接收机均知道。则发射机不再需要额外发送用于指示该发射机所选择的DCI类型的指示信息,当接收机接收到DCI类型对应的DCI时,接收机直接根据预先约定的DCI类型,通过预先约定的DCI类型对应的译码模式对DCI进行译码。举例来说,若预先约定DCI类型为第二类DCI,则接收机根据可译码出第二类DCI的译码模式对接收到的DCI进行译码。若预先约定DCI类型为第一类DCI,则接收机根据可译码出第一类DCI的译码模式对接收到的DCI进行译码。若预先约定DCI类型为第一类DCI和第二类DCI,则接收机根据可译码出第一类DCI和第二类DCI的译码模式对接收到的DCI进行译码。
方式三,根据系统参数和接收到的DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对接收到的DCI进行译码。较佳的,该映射关系可为该第一UE的接收机专属。
具体来说,系统参数可为发射机所发送的信息中所携带的系统参数,如子帧号等,当 接收机接收到该DCI之后,接收机可通过系统参数,以及接收到的该DCI类型与系统参数的映射关系,确定出当前接收到的信息中携带的系统参数对应的DCI类型,进一步接收机根据确定出的DCI类型,通过该DCI类型对应的译码模式对接收到的DCI进行译码。
方式四,根据预先约定的系统参数和该DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对接收到的DCI进行译码。较佳的,该映射关系可为该第一UE的接收机专属。
具体来说,可在标准中预先约定DCI类型与系统参数的映射关系,发射机和接收机均知道该预先约定的映射关系。系统参数可为发射机所发送的信息中所携带的系统参数,如子帧号等。当接收机接收到该DCI之后,接收机可通过系统参数,以及预先约定的DCI类型与系统参数的映射关系,确定出当前接收到的信息中携带的系统参数对应的DCI类型,进一步接收机根据确定出的DCI类型,通过该DCI类型对应的译码模式对接收到的DCI进行译码。
方式五,根据预先约定的子帧号与该DCI类型的对应关系,以及接收到的DCI对应的子帧号,确定出接收到的DCI对应的DCI类型,根据确定出的该DCI类型对接收到的DCI进行译码。
接收机以子帧组为单位,为子帧组内的子帧选择DCI的类型。具体来说,接收机为第一组子帧选择第一组DCI的类型,为第二组子帧选择第二组DCI的类型;该第一组子帧和该第二组子帧在时间上不重叠。举例来说,第一组DCI的类型为第一类DCI,第二组DCI的类型为第一类DCI和第二类DCI。第一组子帧为子帧1和子帧6,第二组子帧为子帧2和子帧4。
而接收机根据预先约定的子帧号与该DCI类型的对应关系,以及接收到的DCI对应的子帧号,确定出接收到的DCI对应的DCI类型,根据确定出的该DCI类型对接收到的DCI进行译码。
方式六,根据接收机的类型对接收到的DCI进行译码。
具体来说,第一UE的接收机为高级接收机时,由于高级接收机具有干扰抑制能力,此时第一UE根据第二类DCI对应的译码模式对接收到的DCI进行译码,利用得到的第二类DCI中包括的干扰信息的参数进行干扰抑制。而当第一UE的接收机为传统接收机时,由于传统接收机不具有干扰抑制能力,因此,第一UE根据第一类DCI对应的译码模式对接收到的DCI进行译码。
根据上述六种优选的方式中的任一种确定出DCI类型,进一步,接收机根据该确定出的DCI类型对应的译码模式译码出该DCI类型对应的DCI。
具体来说,接收机确定出发射机选择的DCI类型为第一类DCI,则接收机可使用第一类DCI对应的译码模式来译码出第一类DCI;接收机确定出发射机选择的DCI类型为第二 类DCI,则接收机可使用第二类DCI对应的译码模式来译码出第二类DCI;接收机确定出发射机选择的DCI类型为第一类DCI和第二类DCI,则接收机可使用第一类DCI或第二类DCI对应的能同时译码出第一类DCI和第二类DCI的译码模式。
上述例子中,该DCI类型对应的译码模式包括以下任一种模式:检测和译码该第一类DCI、检测和译码该第二类DCI、检测和译码该第一类DCI和该第二类DCI。
具体来说,第一类DCI对应的译码模式为以下两种译码模式中的任一种:检测和译码该第一类DCI、检测和译码该第一类DCI和该第二类DCI。
具体来说,第二类DCI对应的译码模式为以下两种译码模式中的任一种:检测和译码该第二类DCI、检测和译码该第一类DCI和该第二类DCI。
而同时检测和译码该第一类DCI和该第二类DCI的译码模式则为能同时译码出第一类DCI和第二类DCI的译码模式。
优选的,当接收机需要同时译码第一类DCI和第二类DCI时,本发明实施例中可规定,若第一UE解析出第二类DCI中的干扰信号的参数,则对接收机所接收到的干扰信号进行干扰抑制,否则,则不对接收机所接收到的干扰信号进行干扰抑制。
本发明实施例中的第一UE的接收机可能需要监测和译码多种类型的DCI,如第二类DCI和第一类DCI,此过程无疑增加了第一UE的接收机盲检的复杂度。较佳的,本发明实施例中针对每种类型的DCI,接收机确定每种类型的DCI对应的盲检次数,可通过以下两种方式:
第一种方式,接收用于指示每种类型的DCI对应的盲检次数的指示信息,根据该每种类型的DCI对应的盲检次数的指示信息对每种类型的DCI进行盲检。
具体的,发射机为每种类型的DCI合理配置盲检次数,并直接将盲检次数的指令发送给第一UE的接收机;或者将用于指示第一UE的盲检次数的信息发送给第一UE。
第二种方式,根据预先约定的每种类型的DCI对应的盲检次数对每种类型的DCI进行盲检。
具体来说,可在标准中预先预定每种类型的DCI对应的盲检次数,发射机和接收机均为已知状态。发射机可根据预先约定的每种类型的DCI对应的盲检次数,对每种类型的DCI进行盲检。
综上所述,本发明实施例中,发射机可灵活地、选择性地发送第一类DCI和/或第二类DCI。如此,一方面,接收机对其接收到的干扰信号进行干扰抑制时,则可利用接收到的第二类DCI的类型对应的DCI中包括的该接收机收到的干扰信号的参数进行干扰抑制,提高了接收机进行干扰抑制的简便性;另一方面,当接收机不对其接收到的干扰信号进行干扰抑制时,发射机可选择性地发送第一类DCI的类型对应的DCI,由于第一类DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,进一步降低了接收机 处理数据的复杂度。
图3示例性示出了本发明实施例提供的一种发射机的结构示意图。
基于相同构思,本发明实施例提供的一种发射机的结构示意图,如图3所示,用于执行前述方法流程。包括处理单元301、发送单元302:
处理单元301,用于选择下行控制信息DCI类型;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;
发送单元302,用于发送所选择的DCI类型对应的DCI。
较佳的,该第一类DCI中不包括接收机收到的干扰信号的参数。
较佳的,该处理单元301,具体用于:
通过半静态方式或动态方式选择DCI类型。
较佳的,该处理单元301,具体用于:
根据接收机类型和/或干扰抑制方案选择DCI类型。具体来说包括以下三种方案:
根据接收机类型选择DCI类型、根据干扰抑制方案选择DCI类型、根据接收机类型和干扰抑制方案选择DCI类型。
较佳的,该处理单元301,还用于:
确定每种类型的DCI对应的盲检次数;
该发送单元302,还用于:
发送用于指示每种类型的DCI对应的盲检次数的指示信息。
较佳的,该发送单元302,还用于:
发送用于指示该发射机所选择的DCI类型的指示信息。
较佳的,该处理单元301,还用于:
建立该DCI类型与系统参数的映射关系;
该发送单元302,还用于:
发送该DCI类型与系统参数的映射关系。
较佳的,该发送单元302,具体用于:
通过动态信令发送该DCI类型与系统参数的映射关系;或
通过半静态信令发送该DCI类型与系统参数的该映射关系;或
通过静态信令发送该DCI类型与系统参数的映射关系。
较佳的,该处理单元301,具体用于:
以子帧组为单位,为子帧组内的子帧选择DCI的类型。具体来说,为第一组子帧选择第一组DCI的类型,为第二组子帧选择第二组DCI的类型;该第一组子帧和该第二组子帧在时间上不重叠。
综上所述,本发明实施例中,发射机可灵活地选择性地发送第一类DCI和/或第二类 DCI。一方面,接收机对其接收到的干扰信号进行干扰抑制时,则可利用接收到的第二类DCI的类型对应的DCI中包括的该接收机收到的干扰信号的参数进行干扰抑制,提高了接收机进行干扰抑制的简便性;另一方面,当接收机不对其接收到的干扰信号进行干扰抑制时,发射机可选择性地发送第一类DCI的类型对应的DCI,由于第一类DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,进一步降低了接收机处理数据的复杂度。
图4示例性示出了本发明实施例提供的一种接收机的结构示意图。
基于相同构思,本发明实施例提供的一种接收机的结构示意图,如图4所示,用于执行前述方法流程。包括接收单元401、处理单元402:
接收单元401,用于接收发射机所选择的下行控制信息DCI类型对应的DCI;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;
处理单元402,用于对接收到的该DCI进行译码。
较佳的,该第一类DCI中不包括接收机收到的干扰信号的参数。
较佳的,该处理单元402,还用于:
根据接收到的每种类型的DCI对应的盲检次数的指示信息,对每种类型的DCI进行盲检。
较佳的,该处理单元402,还用于:
根据预先约定的每种类型的DCI对应的盲检次数,对每种类型的DCI进行盲检。
较佳的,该处理单元402,还用于:
根据接收到的该发射机所选择的DCI类型的指示信息,对接收到的DCI进行译码。
较佳的,该处理单元402,还用于:
根据预先约定的DCI类型对接收到的该DCI进行译码。
较佳的,该处理单元402,还用于:
根据系统参数和接收到的DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对应DCI译码模式,对接收到的DCI进行译码。
较佳的,该处理单元402,还用于:
根据预先约定的系统参数和所述DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对应DCI译码模式,对接收到的DCI进行译码。
较佳的,该处理单元402,具体用于:
根据预先约定的子帧号与该DCI类型的对应关系,以及接收到的DCI对应的子帧号,确定出接收到的DCI对应的DCI类型,根据确定出的该DCI类型对接收到的DCI进行译 码。
较佳的,该处理单元402,具体用于:
根据接收机的类型对接收到的DCI进行译码。
较佳的,该DCI类型对应的译码模式包括以下任一种模式:
检测和译码该第一类DCI;
检测和译码该第二类DCI;
检测和译码该第一类DCI和该第二类DCI。
综上所述,本发明实施例中,发射机可灵活地、选择性地发送第一类DCI和/或第二类DCI。一方面,接收机对其接收到的干扰信号进行干扰抑制时,则可利用接收到的第二类DCI的类型对应的DCI中包括的该接收机收到的干扰信号的参数进行干扰抑制,提高了接收机进行干扰抑制的简便性;另一方面,当接收机不对其接收到的干扰信号进行干扰抑制时,发射机可选择性地发送第一类DCI的类型对应的DCI,由于第一类DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,进一步降低了接收机处理数据的复杂度。
图5示例性示出了本发明实施例提供的一种发射机的结构示意图。
基于相同构思,本发明实施例提供的一种发射机的结构示意图,如图5所示,用于执行前述方法流程。包括处理器501、收发机502和存储器503:
处理器501,用于读取存储器503中的程序,执行下列过程:
选择下行控制信息DCI类型;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二类DCI包括该接收机收到的干扰信号的参数;通过收发机502发送所选择的DCI类型对应的DCI。
收发机502,用于在处理器501的控制下发送所选择的DCI类型对应的DCI。
较佳的,该第一类DCI中不包括接收机收到的干扰信号的参数。
较佳的,该处理器501,具体用于:
通过半静态方式或动态方式选择DCI类型。
较佳的,该处理器501,具体用于:
根据接收机类型和/或干扰抑制方案选择DCI类型。具体来说包括以下三种方案:
根据接收机类型选择DCI类型、根据干扰抑制方案选择DCI类型、根据接收机类型和干扰抑制方案选择DCI类型。
较佳的,该处理器501,还用于:
确定每种类型的DCI对应的盲检次数;
该收发机502,还用于:
发送用于指示每种类型的DCI对应的盲检次数的指示信息。
较佳的,该收发机502,还用于:
发送用于指示该所选择的DCI类型的指示信息。
较佳的,该处理器501,还用于:
建立该DCI类型与系统参数的映射关系;
该收发机502,还用于:
发送该DCI类型与系统参数的映射关系。
较佳的,该收发机502,具体用于:
通过动态信令发送该DCI类型与系统参数的映射关系;或
通过半静态信令发送该DCI类型与系统参数的该映射关系;或
通过静态信令发送该DCI类型与系统参数的映射关系。
较佳的,该处理器501,具体用于:
以子帧组为单位,为子帧组内的子帧选择DCI的类型。具体来说,为第一组子帧选择第一组DCI的类型,为第二组子帧选择第二组DCI的类型;该第一组子帧和该第二组子帧在时间上不重叠。
其中,在图5中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器501代表的一个或多个处理器和存储器503代表的存储器的各种电路通过总线接口504链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机502可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元。处理器501负责管理总线架构和通常的处理,存储器503可以存储处理器501在执行操作时所使用的数据。
综上所述,本发明实施例中,发射机可灵活地选择性地发送第一类DCI和/或第二类DCI。一方面,接收机对其接收到的干扰信号进行干扰抑制时,则可利用接收到的第二类DCI的类型对应的DCI中包括的该接收机收到的干扰信号的参数进行干扰抑制,提高了接收机进行干扰抑制的简便性;另一方面,当接收机不对其接收到的干扰信号进行干扰抑制时,发射机可选择性地发送第一类DCI的类型对应的DCI,由于第一类DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,进一步降低了接收机处理数据的复杂度。
图6示例性示出了本发明实施例提供的一种接收机的结构示意图。
基于相同构思,本发明实施例提供的一种接收机的结构示意图,如图6所示,用于执行前述方法流程。包括收发机601、处理器602和存储器603:
收发机601,用于在处理器602的控制下接收发射机所选择的下行控制信息DCI类型对应的DCI;其中,该DCI类型包括第一类DCI的类型和/或第二类DCI的类型,该第二 类DCI包括该接收机收到的干扰信号的参数;通过收发机601接收到的该DCI进行译码。
较佳的,该第一类DCI中不包括接收机收到的干扰信号的参数。
处理器602,用于读取存储器603中的程序,对接收到的该DCI进行译码。
较佳的,该处理器602,还用于:
根据接收到的每种类型的DCI对应的盲检次数的指示信息,对每种类型的DCI进行盲检。
较佳的,该处理器602,还用于:
根据预先约定的每种类型的DCI对应的盲检次数,对每种类型的DCI进行盲检。
较佳的,该处理器602,还用于:
根据接收到的该发射机所选择的DCI类型的指示信息,对接收到的DCI进行译码。
较佳的,该处理器602,还用于:
根据预先约定的DCI类型对接收到的该DCI进行译码。
较佳的,该处理器602,还用于:
根据系统参数和接收到的DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对应DCI译码模式对接收到的DCI进行译码。
较佳的,该处理器602,还用于:
根据预先约定的系统参数和所述DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对应DCI译码模式对接收到的DCI进行译码。
较佳的,该处理器602,具体用于:
根据预先约定的子帧号与该DCI类型的对应关系,以及接收到的DCI对应的子帧号,确定出接收到的DCI对应的DCI类型,根据确定出的该DCI类型对接收到的DCI进行译码。
较佳的,该处理器602,具体用于:
根据接收机的类型对接收到的DCI进行译码。
较佳的,该DCI类型对应的译码模式包括以下任一种模式:
检测和译码该第一类DCI;
检测和译码该第二类DCI;
检测和译码该第一类DCI和该第二类DCI。
其中,在图6中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器602代表的一个或多个处理器602和存储器603代表的存储器的各种电路通过总线接口604链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机601可以是多个元件,即包括发送机和接收机,提供用于在传输介质 上与各种其他装置通信的单元。处理器602负责管理总线架构和通常的处理,存储器603可以存储处理器602在执行操作时所使用的数据。
综上所述,本发明实施例中,发射机可灵活地、选择性地发送第一类DCI和/或第二类DCI。一方面,接收机对其接收到的干扰信号进行干扰抑制时,则可利用接收到的第二类DCI的类型对应的DCI中包括的该接收机收到的干扰信号的参数进行干扰抑制,提高了接收机进行干扰抑制的简便性;另一方面,当接收机不对其接收到的干扰信号进行干扰抑制时,发射机可选择性地发送第一类DCI的类型对应的DCI,由于第一类DCI中不包括接收机收到的干扰信号的参数,从而减少了数据传输的负荷量,进一步降低了接收机处理数据的复杂度。
以上仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (24)

  1. 一种控制信息发送方法,其特征在于,包括以下步骤:
    选择下行控制信息DCI类型;其中,所述DCI类型包括第一类DCI的类型和/或第二类DCI的类型,所述第二类DCI包括所述接收机收到的干扰信号的参数;
    发送所选择的DCI类型对应的DCI。
  2. 如权利要求1所述的方法,其特征在于,所述选择DCI类型,包括:
    通过半静态方式或者动态方式选择DCI类型。
  3. 如权利要求1所述的方法,其特征在于,还包括:
    确定每种类型的DCI对应的盲检次数;
    发送用于指示每种类型的DCI对应的盲检次数的指示信息。
  4. 如权利要求1所述的方法,其特征在于,还包括:
    发送用于指示所选择的DCI类型的指示信息。
  5. 如权利要求1所述的方法,其特征在于,还包括:
    建立所述DCI类型与系统参数的映射关系;
    发送所述DCI类型与系统参数的映射关系。
  6. 如权利要求1所述的方法,其特征在于,所述选择DCI类型,包括:
    以子帧组为单位,为子帧组内的子帧选择DCI的类型。
  7. 一种控制信息接收方法,其特征在于,包括以下步骤:
    接收发射机所选择的下行控制信息DCI类型对应的DCI;其中,所述DCI类型包括第一类DCI的类型和/或第二类DCI的类型,所述第二类DCI包括所述接收机收到的干扰信号的参数;
    对接收到的所述DCI进行译码。
  8. 如权利要求7所述的方法,其特征在于,还包括:
    接收用于指示每种类型的DCI对应的盲检次数的指示信息,根据所述每种类型的DCI对应的盲检次数的指示信息对每种类型的DCI进行盲检;或者
    根据预先约定的每种类型的DCI对应的盲检次数对每种类型的DCI进行盲检。
  9. 如权利要求7所述的方法,其特征在于,所述对接收到的所述DCI进行译码,具体包括:
    根据接收到的DCI类型的指示信息对接收到的DCI进行译码;或者
    根据预先约定的DCI类型对接收到的所述DCI进行译码。
  10. 如权利要求7所述的方法,其特征在于,所述对接收到的所述DCI进行译码,具体包括:
    根据系统参数和接收到的所述DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对接收到的DCI进行译码;或者
    根据预先约定的系统参数和所述DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对接收到的DCI进行译码。
  11. 如权利要求7所述的方法,其特征在于,所述对接收到的所述DCI进行译码,具体包括:
    根据预先约定的子帧号与所述DCI类型的对应关系,以及接收到的DCI对应的子帧号,确定出接收到的DCI对应的DCI类型,根据确定出的该DCI类型对接收到的DCI进行译码。
  12. 如权利要求7所述的方法,其特征在于,所述DCI类型对应的译码模式包括以下任一种模式:
    检测和译码所述第一类DCI;
    检测和译码所述第二类DCI;
    检测和译码所述第一类DCI和所述第二类DCI。
  13. 一种发射机,其特征在于,包括:
    处理单元,用于选择下行控制信息DCI类型;其中,所述DCI类型包括第一类DCI的类型和/或第二类DCI的类型,所述第二类DCI包括所述接收机收到的干扰信号的参数;
    发送单元,用于发送所选择的DCI类型对应的DCI。
  14. 如权利要求13所述的发射机,其特征在于,所述处理单元,具体用于:
    通过半静态方式或动态方式选择DCI类型。
  15. 如权利要求13所述的发射机,其特征在于,所述处理单元,还用于:
    确定每种类型的DCI对应的盲检次数;
    所述发送单元,还用于:
    发送用于指示每种类型的DCI对应的盲检次数的指示信息。
  16. 如权利要求13所述的发射机,其特征在于,所述发送单元,还用于:
    发送用于指示所选择的DCI类型的指示信息。
  17. 如权利要求13所述的发射机,其特征在于,所述处理单元,还用于:
    建立所述DCI类型与系统参数的映射关系;
    所述发送单元,还用于:
    发送所述DCI类型与系统参数的映射关系。
  18. 如权利要求13所述的发射机,其特征在于,所述处理单元,具体用于:
    以子帧组为单位,为子帧组内的子帧选择DCI的类型。
  19. 一种接收机,其特征在于,包括:
    接收单元,用于接收发射机所选择的下行控制信息DCI类型对应的DCI;其中,所述DCI类型包括第一类DCI的类型和/或第二类DCI的类型,所述第二类DCI包括所述接收机收到的干扰信号的参数;
    处理单元,用于对接收到的所述DCI进行译码。
  20. 如权利要求19所述的接收机,其特征在于,所述处理单元,具体用于:
    根据接收到的每种类型的DCI对应的盲检次数的指示信息对每种类型的DCI进行盲检;或者
    根据预先约定的每种类型的DCI对应的盲检次数对每种类型的DCI进行盲检。
  21. 如权利要求19所述的接收机,其特征在于,所述处理单元,具体用于:
    根据接收到的DCI类型的指示信息对接收到的DCI进行译码;或者
    根据预先约定的DCI类型对接收到的所述DCI进行译码。
  22. 如权利要求19所述的接收机,其特征在于,所述处理单元,具体用于:
    根据系统参数和接收到的所述DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对应DCI译码模式对接收到的DCI进行译码;或者
    根据预先约定的系统参数和所述DCI类型与系统参数的映射关系,确定出系统参数对应的DCI类型,并根据确定出的该DCI类型对应DCI译码模式对接收到的DCI进行译码。
  23. 如权利要求19所述的接收机,其特征在于,所述处理单元,具体用于:
    根据预先约定的子帧号与所述DCI类型的对应关系,以及接收到的DCI对应的子帧号,确定出接收到的DCI对应的DCI类型,根据确定出的该DCI类型对接收到的DCI进行译码。
  24. 如权利要求19所述的接收机,其特征在于,所述DCI类型对应的译码模式包括以下任一种模式:
    检测和译码所述第一类DCI;
    检测和译码所述第二类DCI;
    检测和译码所述第一类DCI和所述第二类DCI。
PCT/CN2016/080235 2015-04-30 2016-04-26 一种控制信息发送方法和接收方法及发射机、接收机 WO2016173489A1 (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019047975A1 (zh) * 2017-09-11 2019-03-14 华为技术有限公司 一种控制信息发送方法、接收方法、发送设备和接收设备
WO2020034250A1 (en) * 2018-08-27 2020-02-20 Zte Corporation Method and apparatus for obtaining information from neighboring cells

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2541390B (en) * 2015-08-14 2021-10-20 Tcl Communication Ltd Systems and methods for multi-user communication
CN108809505B (zh) * 2017-05-05 2019-12-24 维沃移动通信有限公司 下行控制信息的传输方法、终端及网络侧设备
US10707939B2 (en) * 2017-10-03 2020-07-07 Mediatek Inc. Codebook-based uplink transmission in wireless communications
US11375342B2 (en) * 2018-02-15 2022-06-28 Telefonaktiebolaget Lm Ericsson (Publ) Apparatuses, methods and computer programs for grouping users in a non-orthogonal multiple access (NOMA) network
EP3641156A1 (en) 2018-10-19 2020-04-22 Universität der Bundeswehr München Satellite communications system and method for transmitting a bit stream therewith
CN117082487A (zh) * 2022-05-08 2023-11-17 华为技术有限公司 一种多用户数据传输的方法和装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010024582A2 (en) * 2008-08-27 2010-03-04 Lg Electronics Inc. Method of transmitting control information in wireless communication system
CN102195742A (zh) * 2010-03-16 2011-09-21 华为技术有限公司 一种物理下行控制信道的配置方法、网络设备和终端
US20130265951A1 (en) * 2012-04-04 2013-10-10 Samsung Electronics Co., Ltd High-order multiple-user multiple-input multiple-output operation for wireless communication systems
US20140334403A1 (en) * 2013-05-10 2014-11-13 Lg Electronics Inc. Method for transmitting or receiving interference information and apparatus therefor
CN104518806A (zh) * 2013-09-27 2015-04-15 中兴通讯股份有限公司 一种信令发送方法、接收方法及信令发送/接收系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101505498B (zh) * 2009-03-17 2014-02-05 中兴通讯股份有限公司 下行控制信息发送方法及相关系统、装置
EP2280492A1 (en) * 2009-07-07 2011-02-02 ST-Ericsson (France) SAS Process for inter-cell interference cancellation in a synchronized OFDM system, and apparatus for the same
KR101605326B1 (ko) * 2010-02-26 2016-04-01 엘지전자 주식회사 신호 송수신 방법 및, 그를 위한 기지국 및 사용자기기
TWI554137B (zh) * 2010-05-26 2016-10-11 財團法人工業技術研究院 控制通道配置方法與控制通道搜尋方法及其通信裝置
CN102811495A (zh) * 2011-06-02 2012-12-05 华为技术有限公司 接收、发送调度信息的方法、装置及系统
CN102904669B (zh) * 2011-07-29 2016-05-18 上海贝尔股份有限公司 预编码物理下行控制信道参考信号及盲译码方法和装置
KR102021590B1 (ko) * 2012-06-04 2019-09-18 삼성전자주식회사 무선 통신 시스템에서 제어 정보 송수신 방법 및 장치
GB2512268B (en) * 2012-12-03 2015-02-18 Broadcom Corp Interference cancellation
US20160080963A1 (en) * 2013-05-08 2016-03-17 Interdigital Patent Holdings, Inc. Methods, systems and apparatuses for network assisted interference cancellation and suppression in long-term evolution (lte) systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010024582A2 (en) * 2008-08-27 2010-03-04 Lg Electronics Inc. Method of transmitting control information in wireless communication system
CN102195742A (zh) * 2010-03-16 2011-09-21 华为技术有限公司 一种物理下行控制信道的配置方法、网络设备和终端
US20130265951A1 (en) * 2012-04-04 2013-10-10 Samsung Electronics Co., Ltd High-order multiple-user multiple-input multiple-output operation for wireless communication systems
US20140334403A1 (en) * 2013-05-10 2014-11-13 Lg Electronics Inc. Method for transmitting or receiving interference information and apparatus therefor
CN104518806A (zh) * 2013-09-27 2015-04-15 中兴通讯股份有限公司 一种信令发送方法、接收方法及信令发送/接收系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3291471A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019047975A1 (zh) * 2017-09-11 2019-03-14 华为技术有限公司 一种控制信息发送方法、接收方法、发送设备和接收设备
WO2020034250A1 (en) * 2018-08-27 2020-02-20 Zte Corporation Method and apparatus for obtaining information from neighboring cells

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