WO2017049524A1 - 一种下行控制信令发送的方法及设备 - Google Patents

一种下行控制信令发送的方法及设备 Download PDF

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Publication number
WO2017049524A1
WO2017049524A1 PCT/CN2015/090516 CN2015090516W WO2017049524A1 WO 2017049524 A1 WO2017049524 A1 WO 2017049524A1 CN 2015090516 W CN2015090516 W CN 2015090516W WO 2017049524 A1 WO2017049524 A1 WO 2017049524A1
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WIPO (PCT)
Prior art keywords
terminal device
transmission
information
layer
pairing
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Ceased
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PCT/CN2015/090516
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English (en)
French (fr)
Inventor
郭志恒
吴海
程型清
龙毅
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201580083095.0A priority Critical patent/CN108029126A/zh
Priority to PCT/CN2015/090516 priority patent/WO2017049524A1/zh
Priority to EP15904411.4A priority patent/EP3340715A4/en
Publication of WO2017049524A1 publication Critical patent/WO2017049524A1/zh
Priority to US15/934,586 priority patent/US10686633B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04L1/0025Transmission of mode-switching indication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • 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
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0067Rate matching
    • H04L1/0068Rate matching by puncturing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1887Scheduling and prioritising arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • 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
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • 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
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and a device for transmitting downlink control signaling.
  • Orthogonal frequency division multiple access In the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE)/Long Term Evolution-Advanced (LTE-A) system, downlink multiple access method Orthogonal frequency division multiple access (OFDM) is usually adopted, that is, different users use different time and frequency resources to ensure that the signal reception between users does not interfere with each other, but the transmission rate is low.
  • OFDM Orthogonal frequency division multiple access
  • NOMA Non-orthogonal Multiplexing Access
  • SOMA Semi-orthogonal Multiplexing Access
  • NOMA allocates a single resource to multiple users, and the transmission signals of multiple users are superimposed on the time/frequency domain, and then different users are assigned different Power ensures accurate reception on the user side.
  • SOMA is based on the NOMA to further utilize the existing modulation method or the Gray coding feature of the constellation diagram, so that the user can pick up Machine simple reception algorithm, combined transmission between users, to improve system performance.
  • the UEs in the cell in the existing LTE system generally have multiple transmission modes (such as codebook-based space division multiplexing, non-codebook-based space division multiplexing, etc.).
  • multiple transmission modes such as codebook-based space division multiplexing, non-codebook-based space division multiplexing, etc.
  • the manner in which the UE acquires power pairing information or layer pairing information is different.
  • the power pairing information may be notified to the UE by using high layer signaling or physical layer signaling or other non-explicit manner.
  • the present invention provides a method and a device for transmitting downlink control signaling, which can solve the problem of large signaling overhead when notifying power pairing information or layer pairing information in different transmission modes in the prior art.
  • a first aspect of the embodiments of the present invention provides a method for sending downlink control signaling, where the method includes:
  • the base station sends, by using the downlink control signaling, demodulation information to the first terminal device according to the first transmission type and the second transmission type, where the demodulation information is used to indicate the first terminal device solution Transmitting, by the first terminal device, a transmission signal of the first terminal device.
  • the demodulation information includes: demodulating control information of a transmission signal of the first terminal device, and demodulating transmission of the second terminal device Signal control information.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is code based
  • the demodulation information includes a transmission mode of the second terminal device, layer pairing information between the first terminal device and the second terminal device, or includes the second terminal device The transmission mode, layer pairing information between the first terminal device and the second terminal device.
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-code
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and between the first terminal device and the second terminal device Power pairing information;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non- a codebook transmission
  • the reference signal used by the first terminal device on the pairing space layer is the same as the reference signal used by the second terminal device on the pairing space layer
  • the demodulation information includes the first Layer pairing information between a terminal device and the second terminal device, power pairing information between the first terminal device and the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non- a codebook transmission
  • the reference signal used by the first terminal device on the pairing space layer is different from the reference signal used by the second terminal device on the pairing space layer
  • the demodulation information includes the first Layer pairing information between a terminal device and the second terminal device, power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the demodulation information further includes a multiplexing mode and transmission information; And indicating, by using a mode, association information between a data signal of the first terminal device and a reference signal used by the second terminal device on the pairing layer, where the transmission information includes the first terminal device and the second terminal The signal, data received by the first terminal device, and signals and data received by the second terminal device when the device is paired.
  • the demodulation information carries a modulation mode and power pairing information of the first terminal device on each of the spatial layers;
  • the power pairing information is that the base station is configured by the first terminal device and the second terminal device
  • the demodulation information further carries modulation mode combination information, where the modulation mode combination information is that the base station uses the first terminal device and the The second terminal device obtains the same modulation mode on the at least two spatial layers.
  • the method further includes:
  • the base station Decoding or rate matching data sent by the first terminal device
  • the base station Puncturing or rate matching the data sent by the second terminal device when the reference signal used by the first terminal device based on the non-codebook transmission and the transmitted data of the second terminal device based on the codebook transmission collide in the time domain and the frequency domain, the base station Puncturing or rate matching the data sent by the second terminal device.
  • a second aspect of the present invention provides a method of demodulating a signal, the method comprising:
  • the first terminal device receives the demodulation information sent by the base station, where the demodulation information is sent by the base station according to the first transmission type of the first terminal device and the second transmission type of the second terminal device by using downlink control signaling.
  • Information
  • the first terminal device demodulates the received transmission signal of the first terminal device according to the demodulation information.
  • the demodulation information includes: demodulating control information of a transmission signal of the first terminal device, and demodulating transmission of the second terminal device Signal control information.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is code based
  • the demodulation information includes a transmission mode of the second terminal device, layer pairing information between the first terminal device and the second terminal device, or includes the second terminal device The transmission mode, layer pairing information between the first terminal device and the second terminal device.
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-code
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and between the first terminal device and the second terminal device Power pairing information;
  • the demodulation information includes an antenna port of the second terminal device, and the second terminal is configured. a scramble identifier and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non- a codebook transmission
  • the reference signal used by the first terminal device on the pairing space layer is the same as the reference signal used by the second terminal device in the pairing space layer
  • the demodulation information includes the first Layer pairing information between the terminal device and the second terminal device, and power pairing information between the first terminal device and the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non- a codebook transmission
  • the reference signal used by the first terminal device on the pairing space layer is different from the reference signal used by the second terminal device on the pairing space layer
  • the demodulation information includes the first Layer pairing information between a terminal device and the second terminal device, power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the demodulation information further includes a multiplexing mode and transmission information; And indicating, by using a mode, association information between a data signal of the first terminal device and a reference signal used by the second terminal device on the pairing space layer, where the transmission information includes the first terminal device and the second a signal, data received by the first terminal device, and signals and data received by the second terminal device when the terminal device is paired.
  • the method further includes one of the following items:
  • the first terminal device performs channel estimation on the reference signal of the second terminal device corresponding to the antenna port or the scrambling identifier, and obtains a second power used by the second terminal device to send the transmission signal. And obtaining the power pairing information according to the second power and the first power used by the first terminal device to send a signal; and obtaining the layer pairing according to the layer sequence number and a layer sequence number of the first terminal device information;
  • the first terminal device performs channel estimation on the reference signal of the second terminal device corresponding to the scrambling identifier, and obtains a second power used by the second terminal device to send the transmission signal, and according to The second power and the first power used by the first terminal device to send a signal obtain the power pairing information;
  • the first terminal device demodulates the received transmission signal of the second terminal device according to the demodulation information, and includes:
  • the first terminal device demodulates the transmission signal according to the power pairing information and the layer pairing information.
  • the reference signal used by the second terminal device on the paired space layer is according to the following Get at least one of the items:
  • the demodulation information when the first terminal device and the second terminal device use the same The at least two spatial layers, the demodulation information carries a modulation mode and power pairing information of the first terminal device on each of the spatial layers;
  • the power pairing information is that the base station is configured by the first terminal device and the second terminal device
  • the demodulation information further carries modulation mode combination information, where the modulation mode combination information is that the base station uses the first terminal device and the The second terminal device obtains the same modulation mode on the at least two spatial layers.
  • a third aspect of the present invention provides a base station, where the base station includes:
  • a processing module configured to determine a first transmission type of the first terminal device and a second transmission type of the second terminal device
  • a sending module configured to send, according to the first transmission type and the second transmission type determined by the processing module, demodulation information to the first terminal device by using downlink control signaling, where the demodulation information is used Instructing the first terminal device to demodulate a transmission signal of the first terminal device received by the first terminal device.
  • the demodulation information includes: demodulating control information of a transmission signal of the first terminal device, and demodulating transmission of the second terminal device Signal control information.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is code based
  • the demodulation information includes a transmission mode of the second terminal device, layer pairing information between the first terminal device and the second terminal device, or includes the second terminal device The transmission mode, layer pairing information between the first terminal device and the second terminal device.
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-code
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and between the first terminal device and the second terminal device Power pairing information;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non- a codebook transmission
  • the reference signal used by the first terminal device on the pairing space layer is the same as the reference signal used by the second terminal device on the pairing space layer
  • the demodulation information includes the first Layer pairing information between a terminal device and the second terminal device, the first terminal device and Power pairing information between the two terminal devices.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non- a codebook transmission
  • the reference signal used by the first terminal device on the pairing space layer is different from the reference signal used by the second terminal device on the pairing space layer
  • the demodulation information includes the first Layer pairing information between a terminal device and the second terminal device, power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the demodulation information further includes a multiplexing mode and transmission information; And indicating, by using a mode, association information between a data signal of the first terminal device and a reference signal used by the second terminal device on the pairing layer, where the transmission information includes the first terminal device and the second terminal The signal, data received by the first terminal device, and signals and data received by the second terminal device when the device is paired.
  • the demodulation information carries a modulation mode and power pairing information of the first terminal device on each of the spatial layers;
  • the power pairing information is that the base station is configured by the first terminal device and the second terminal device
  • the demodulation information further carries modulation mode combination information, where the modulation mode combination information is that the base station uses the first terminal device and the The second terminal device obtains the same modulation mode on the at least two spatial layers.
  • the processing module is further configured to:
  • the reference signal used by the second terminal device based on non-codebook transmission is based on codebook transmission
  • the data sent by the first terminal device is in conflict between the time domain and the frequency domain, the data of the first terminal device is punctured or rate matched;
  • the reference signal used by the first terminal device based on the non-codebook transmission and the transmitted data of the second terminal device based on the codebook transmission collide in the time domain and the frequency domain,
  • the data sent by the second terminal device is punctured or rate matched.
  • the fourth aspect of the present invention provides a first terminal device, where the first terminal device includes:
  • the receiving module is configured to receive the demodulation information sent by the base station, where the demodulation information is that the base station passes the downlink control signaling according to the first transmission type of the first terminal device and the second transmission type of the second terminal device.
  • a processing module configured to demodulate the received transmission signal of the first terminal device according to the demodulation information.
  • the demodulation information includes: demodulating control information of a transmission signal of the first terminal device, and demodulating transmission of the second terminal device Signal control information.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is code based
  • the demodulation information includes a transmission mode of the second terminal device, layer pairing information between the first terminal device and the second terminal device, or includes the second terminal device The transmission mode, layer pairing information between the first terminal device and the second terminal device.
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-code
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and between the first terminal device and the second terminal device Power pairing information;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non- a codebook transmission
  • the reference signal used by the first terminal device on the pairing space layer is the same as the reference signal used by the second terminal device in the pairing space layer
  • the demodulation information includes the first Layer pairing information between the terminal device and the second terminal device, and power pairing information between the first terminal device and the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non- a codebook transmission
  • the reference signal used by the first terminal device on the pairing space layer is different from the reference signal used by the second terminal device on the pairing space layer
  • the demodulation information includes the first Layer pairing information between a terminal device and the second terminal device, power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the demodulation information further includes a multiplexing mode and transmission information; And indicating, by using a mode, association information between a data signal of the first terminal device and a reference signal used by the second terminal device on the pairing space layer, where the transmission information includes the first terminal device and the second a signal, data received by the first terminal device, and signals and data received by the second terminal device when the terminal device is paired.
  • the processing module is further configured to perform one of the following:
  • the layer pairing information is obtained according to the layer sequence number and a layer sequence number of the first terminal device
  • the processing module is specifically configured to:
  • the reference signal used by the second terminal device on the paired space layer is according to the following Get at least one of the items:
  • the first terminal device and the second terminal device use the same The at least two spatial layers, the demodulation information carries a modulation mode and power pairing information of the first terminal device on each of the spatial layers;
  • the power pairing information is that the base station is configured by the first terminal device and the second terminal device
  • the demodulation information further carries modulation mode combination information, where the modulation mode combination information is that the base station uses the first terminal device and the The second terminal device obtains the same modulation mode on the at least two spatial layers.
  • the base station transmits the content of the demodulation information according to the specific determination of the transmission modes of the first terminal device and the second terminal device, and also reduces the unnecessary signaling overhead to a certain extent.
  • the first terminal device can obtain the transmission signal of the first terminal device dynamically and accurately, thereby achieving the purpose of correct demodulation or interference cancellation.
  • FIG. 1 is a flowchart of a method for transmitting downlink control signaling according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for demodulating a signal according to an embodiment of the present invention
  • FIG. 3 is a structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a first terminal device according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of another base station according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of another first terminal device according to an embodiment of the present invention.
  • the terms “comprises” and “comprises” and “the” and “the” are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or modules is not necessarily limited to Those steps or modules, but may include other steps or modules not explicitly listed or inherent to such processes, methods, products or devices, the division of the modules presented herein is merely a logical division. There may be additional divisions in the implementation of the actual application, for example, multiple modules may be combined or integrated into another system, or some features may be ignored, or not executed, and the displayed or discussed mutual coupling.
  • the direct coupling or the communication connection may be through some interfaces, and the indirect coupling or communication connection between the modules may be electrical or the like, which is not limited herein.
  • the module or the sub-module described as the separate component may or may not be physically separated, may not be a physical module, or may not be divided into a plurality of circuit modules, and may select a part thereof according to actual needs or All modules are used to achieve the objectives of the embodiments of the present invention.
  • the embodiments of the present invention provide a method and a device for transmitting downlink control signaling, which are used in an LTE communication system, and are specifically used for signal transmission and reception of a Physical Downlink Shared Channel (PDSCH). The details are described below.
  • PDSCH Physical Downlink Shared Channel
  • a terminal device in a cell of an existing LTE system has multiple transmission modes, for example, codebook-based space division multiplexing, non-codebook-based space division multiplexing, etc., and terminals using the same or different transmission modes.
  • codebook-based space division multiplexing for example, codebook-based space division multiplexing, non-codebook-based space division multiplexing, etc.
  • terminals using the same or different transmission modes.
  • each terminal device obtains layer pairing information and power pairing information in different ways.
  • the terminal device will treat the received signal of other terminal devices as an interference signal, so interference cancellation may be required to correctly demodulate its own transmission signal.
  • the downlink control signaling mainly includes power pairing information, layer pairing information, and a modulation mode of the second terminal device B or a composite constellation modulation mode (ie, the first terminal device A and the second device) The result of superimposing the signal of both terminal devices B).
  • the power pairing information is used to indicate a power allocation ratio between A and B, so that A can calculate the size of the composite constellation and the size of the signal received by A, thereby performing interference deletion and demodulation.
  • the layer pairing information is used to indicate a layer pairing relationship between the terminal devices.
  • the first terminal device A uses two spatial layers
  • the second terminal device B uses one spatial layer
  • the layer pairing information may be obtained by notifying the first terminal device A of the antenna port number used by the second terminal device B user, so that the first terminal device A can obtain the first terminal device A and the second terminal device B. Layer mapping relationship.
  • both the first terminal device A and the second terminal device B use only one spatial layer.
  • the first terminal device A does not need to acquire layer pairing information when demodulating the signal.
  • the layer pairing information herein includes pairing information of both the first terminal device A and the second terminal device B in the paired state on each paired space layer, and additionally, the power pairing information includes the first terminal device A in the paired state. Power allocation information on both the paired spatial layers of both the second terminal device B and the second terminal device B.
  • the first terminal device A needs to use the layer pairing information, the power pairing information, the modulation mode of the second terminal device B or the modulation mode of the composite constellation to calculate the shape and size of the composite constellation. Therefore, the transmission signal may be correctly demodulated according to the composite constellation, and the modulation mode of the second terminal device B or the modulation mode of the composite constellation may be obtained by using downlink control signaling sent by the base station, or may be obtained by the first terminal.
  • Equipment A is blindly detected by itself, and is not limited.
  • the main solution in the embodiment of the present invention is that the base station according to the transmission type and the second of the first terminal device A, because the signaling overhead required for the demodulation information is notified by the downlink control signaling is large.
  • the transmission type of the terminal device B determines the modulation information carried by the downlink control signaling to notify the first terminal device A, so that the first terminal device A can implement accurate demodulation of the signal.
  • the transmission type is based on Codebook Based transmission or based on Non-Codebook Based transmission.
  • the codebook transmission may be interpreted as: the receiving end knows the precoding matrix information used by the transmitting end to transmit data (the optional set of the sending matrix is a finite number), that is, the transmitting end is also transmitting downlink data while also transmitting downlink data. Notifying the receiving end of the precoding matrix information used by the receiving end; or the receiving end and the transmitting end pre-arranging, or implied notification;
  • Non-codebook transmission can be interpreted as: the precoding matrix information used by the transmitting end to transmit data is transparent to the receiving end, and the receiving end does not need to know the precoding matrix information used by the transmitting end to transmit data, and the transmitting end uses the data used when transmitting the data.
  • the set of precoding matrices can be an infinite set.
  • the present invention is mainly used to solve the problem of how the first terminal device A acquires demodulation information when the following combinations of transmission modes are solved, as shown in the following Table 2:
  • TM represents the transport mode (TM)
  • DMRS Demodulation Reference Signal
  • a method for sending downlink control signaling in the embodiment of the present invention is described in the following, and the method includes:
  • the base station determines a first transmission type of the first terminal device and a second transmission type of the second terminal device.
  • the base station sends the carrying demodulation information to the first terminal device by using downlink control signaling according to the first transmission type and the second transmission type.
  • the demodulation information is used to indicate that the first terminal device demodulates the transmission signal of the first terminal device received by the first terminal device, or is used to indicate that the first terminal device demodulates the Transmitting, by the first terminal device, a transmission signal of the first terminal device, and demodulating a transmission signal of the second terminal device received by the first terminal device.
  • the first terminal demodulates the transmission signal of the first terminal device received by the first terminal device, it is required to obtain modulation information of the second terminal device, such as the first terminal device and the second terminal device.
  • the composite constellation is 64 Quadrature Amplitude Modulation (QAM)
  • the first terminal device uses 16QAM
  • the second terminal device is Quadrature Phase Shift Keying (QPSK).
  • QAM Quadrature Amplitude Modulation
  • QPSK Quadrature Phase Shift Keying
  • a terminal device obtains modulation type information of the second terminal device, it can be known that the composite constellation is 64QAM, and thus the terminal is The device can demodulate its own signal according to the composite constellation without having to demodulate the transmission signal of the second terminal device.
  • NOMA Non-Orthogonal Multiplexing Access
  • the base station determines, according to the transmission mode of the first terminal device and the second terminal device, the content of the demodulated information, and effectively solves the problem in the multi-layer pairing.
  • the power ratios of the configuration are different, a large amount of signaling is required to notify the first terminal device, which reduces the unnecessary signaling overhead to a certain extent, and enables the first terminal device to obtain the demodulation first dynamically and accurately.
  • the terminal device transmits signals to achieve the purpose of correct descrambling.
  • the demodulation information may be: a, demodulating control information of the first terminal device, and/or b, demodulating part or all of the control information of the second terminal device.
  • the foregoing base station may determine, according to an actual situation, a manner of transmitting the demodulation information, that is, the foregoing sending, by using the downlink control signaling, the carrying demodulation information to the first terminal device, specifically:
  • the modulation information includes the above a and b, that is, a and b are transmitted through the first downlink control signaling.
  • a and b occupy more bits or only one user needs, then it can also be sent through at least two control channels.
  • a and b have 100 bits, which can be respectively passed.
  • the two control channels transmit 50 bits respectively, which can save resources to some extent.
  • a is sent by using the first downlink control signaling
  • b is sent by using the second downlink control signaling
  • a and b are sent by multiple signaling.
  • the control signaling here may also be sent through at least two control channels respectively.
  • the transmission types of the first terminal device and the second terminal device may be the same or different, and the transmission type may be based on a codebook based transmission or a non-codebook (Non-Codebook). Based) transmission.
  • the transmission mode is TM2/3/4/5/6
  • the transmit diversity transmission mode and/or the space division multiplexing transmission type corresponding to the transmission mode can be classified as codebook based transmission, and the transmission mode is TM7/.
  • the spatial division multiplexing transmission type corresponding to the transmission mode is based on non-codebook transmission, and its corresponding transmit diversity transmission mode can be classified as non-codebook transmission.
  • the downlink control signaling that carries the foregoing demodulation information may also be sent by using carrier aggregation multiple times. To improve reliability.
  • the transmission types corresponding to the transmission mode may also be different or the same, and may be roughly classified into the following cases:
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on codebook transmission
  • the demodulation information includes a transmission mode of the second terminal device, and the first terminal device The layer pairing information between the second terminal device and the second terminal device, or the layer connection information between the first terminal device and the second terminal device.
  • the transmission mode is a transmission mode defined by 3GPP, for example: TM1/2/3/4/5/6/7/8/910.
  • the transmission mode is a transmission mode defined by the 3GPP, for example, transmission diversity, large delay cycle delay diversity, closed-loop space division multiplexing, and multiple input multiple Ouput (MIMO).
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the demodulation information includes both the first terminal device and the second terminal device.
  • Layer pairing information power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port (Antenna Ports) of the second terminal device, a scrambling identity (SCID) of the second terminal device, and a layer sequence number of the second terminal device (Number)
  • the Layer 2 device enables the first terminal device to obtain the power pairing information according to the SCID, and obtain the layer pairing information according to the layer sequence.
  • the demodulation information only needs to include the three pieces of information. It can be other transmission modes, which are not limited in this paper.
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the scrambling identifier of the second terminal device, for example, a transmission mode of the second terminal device
  • the demodulation information only needs to contain these two information, and may also be other transmission modes, which are not limited in this paper.
  • the scrambling identifier is a parameter when the reference signal is generated, and the scrambling identifier is defined according to a Downlink Control Information (DCI) format (2B, 2C or 2D) related to physical downlink shared channel transmission in the 3GPP protocol.
  • DCI Downlink Control Information
  • the downlink control signaling sent by the base station to the terminal device may be different according to the different transmission modes of the terminal device.
  • the downlink control signaling may only include SCID and layer pairing information, that is, additional layer layer pairing information is required; if the second terminal device adopts TM9, the downlink control signaling can only include "Antenna Ports, SCID, and Number of Layers", that is, no additional layer pairing is required. Information. The case of other transmission modes is not described here.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission
  • a reference signal used by the first terminal device on the pairing space layer the second terminal
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the first terminal device and Power pairing information between the two terminal devices.
  • the reference signal may be configured the same by the downlink signaling or the same as the convention.
  • the first terminal device does not need to obtain the reference signal used by the second terminal device according to the SCID of the second terminal device, that is, the base station may not send the SCID to the first Terminal Equipment.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the reference signal used by the first terminal device on the pairing space layer the second terminal
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the first terminal device and Power pairing information between the two terminal devices;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device.
  • the transmission mode of the second terminal device is TM9.
  • the demodulation information only needs to include these three information, and may also be other transmission modes, which are not limited in this paper.
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the scrambling identifier of the second terminal device, for example, a transmission mode of the second terminal device
  • the demodulation information only needs to contain these two information, and may also be other transmission modes, which are not limited in this paper.
  • the reference signal may be configured differently by the downlink signaling or the protocol may be different (can be embodied by setting different SCID values).
  • the reference signal used by the terminal device may be a DMRS or a User Equipment Specific Reference Signal (UE Specific RS), and the transmission of the terminal device
  • the reference signal used by the terminal device may be a Cell Specific Reference Signal (CSRS).
  • the first terminal device may perform channel estimation on a reference signal of the second terminal device corresponding to the antenna port or the scrambling identifier, and finally obtain the power pairing information, and in addition, the first terminal The device may obtain the layer pairing information according to the layer sequence number.
  • the manner in which the first terminal device obtains power pairing information and layer pairing information is as follows:
  • the first terminal device performs channel estimation on the reference signal used by the second terminal device corresponding to the antenna port or the scrambling identifier on the pairing space layer, and obtains that the second terminal device sends the transmission signal.
  • the second power used, and the power pairing information is obtained according to the second power and the first power used by the first terminal device to send a signal; according to the layer sequence number and the layer of the first terminal device The serial number obtains the layer pairing information;
  • the first terminal device performs channel estimation on the reference signal of the second terminal device corresponding to the scrambling identifier, and obtains a second power used by the second terminal device to send the transmission signal, and according to The second power and the first power used by the first terminal device to transmit a signal obtain the power pairing information.
  • the first terminal device may acquire, according to at least one of the following phases, a reference signal used by the second terminal device on the pairing space layer:
  • the first terminal device detects that a channel is obtained
  • the modulation information in the foregoing four cases may further include modulation mode combination information or a modulation mode of the first terminal device (the first terminal device may also be obtained by blind detection), where the modulation mode combination information or the modulation Refer to Table 3 for the method;
  • the modulation mode combination information or the modulation mode may specifically include one of the following two situations:
  • the demodulation information carries a modulation mode and power pairing of the first terminal device on each of the spatial layers.
  • the information is that the base station needs to separately send the modulation mode and power pairing information of the first terminal device on each paired space layer to the first terminal device.
  • the power pairing information is that the base station is configured by the first terminal device and the second terminal device After the power allocation information of the at least two spatial layers is scheduled to be the same, the base station sends the downlink control signaling that carries the modulated modulation mode combination information and the power pairing information to the first terminal device, so only the notification is required.
  • a set of modulation schemes combines information and power pairing information to reduce signaling overhead.
  • the optional set of power pairing information corresponding to different modulation mode combination information is variable.
  • the foregoing demodulation information may further include a multiplexing mode and a transmission information, where the multiplexing mode indicates a data signal of the first terminal device and a reference signal used by the second terminal device on the pairing layer.
  • the transmission information includes a signal, data sent by the first terminal device, and a signal sent by the second terminal device when the first terminal device is paired with the second terminal device ,data.
  • the method further includes:
  • the base station Decoding or rate matching data sent by the first terminal device
  • the base station Puncturing or rate matching the data sent by the second terminal device when the reference signal used by the first terminal device based on the non-codebook transmission and the transmitted data of the second terminal device based on the codebook transmission collide in the time domain and the frequency domain, the base station Puncturing or rate matching the data sent by the second terminal device.
  • the transmission modes TM adopted by two users are different, for example, the transmission mode of the central user at the cell center is TM2, and the transmission mode of the edge user at the cell edge is TM9, when the signals of the two users are superimposed according to the signal transmission type of the current LTE protocol, part of the data under the TM2 is superimposed with the DMRS (reference signal) of the TM9, so there is a collision phenomenon between the data and the reference signal.
  • DMRS reference signal
  • the TM2 user does not send a signal at the reference signal position of the TM9 user.
  • the TM2 user performs signal mapping according to the signal transmission type of the current LTE protocol, but does not transmit a data signal at the reference signal position of the TM9 user.
  • the TM2 user Since the reference signal of the TM9 user has been occupied, the TM2 user cannot transmit data when encoding and rate matching, but first selects the time-frequency resource of the reference signal position of the TM9 user, and then performs rate matching.
  • the first terminal device receives demodulation information sent by the base station.
  • the demodulation information is information that is sent by the base station by using downlink control signaling according to the first transmission type of the first terminal device and the second transmission type of the second terminal device; And including control information for demodulating the transmission signal of the first terminal device, and demodulation control information of the transmission signal of the second terminal device.
  • the first terminal device demodulates the received transmission signal of the first terminal device according to the demodulation information.
  • the first terminal device receives the demodulation information sent by the base station according to the transmission mode of the first terminal device and the second terminal device, and receives the demodulated information according to the content of the demodulated information.
  • the demodulation of the transmission signal to the user itself reduces the unnecessary signaling overhead to a certain extent, and also enables the first terminal device to dynamically and accurately obtain the transmission signal of the first terminal device, thereby achieving correct descrambling. purpose.
  • the transmission types of the first terminal device and the second terminal device may be the same or different from each other, and the transmission type may be based on a codebook or based on a non-codebook.
  • the transmission types corresponding to the transmission mode may also be different or the same, which can be roughly divided into the following cases:
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on codebook transmission
  • the demodulation information includes a transmission mode of the second terminal device, and the first terminal device The layer pairing information between the second terminal device and the second terminal device, or the layer connection information between the first terminal device and the second terminal device.
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the demodulation information includes both the first terminal device and the second terminal device.
  • Layer pairing information power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device.
  • the transmission mode of the second terminal device is TM9.
  • the demodulation information only needs to include these three information, and may also be other transmission modes, which are not limited in this paper.
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the scrambling identifier of the second terminal device, for example, a transmission mode of the second terminal device
  • the demodulation information only needs to contain these two information, and may also be other transmission modes, which are not limited in this paper.
  • the first terminal device may identify the antenna port or the scrambling identifier
  • the reference signal of the second terminal device is used for channel estimation, and finally the power pairing information is obtained.
  • the first terminal device may obtain the layer pairing information according to the layer sequence number.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission
  • a reference signal used by the first terminal device on the pairing space layer and the second terminal
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the first terminal device and Power pairing information between the two terminal devices.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission, the reference signal used by the first terminal device on the pairing space layer and the second terminal device
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, the first terminal device and the Determining power pairing information between the two terminal devices;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device.
  • the transmission mode of the second terminal device is TM9.
  • the demodulation information only needs to include these three information, and may also be other transmission modes, which are not limited in this paper.
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the scrambling identifier of the second terminal device, for example, a transmission mode of the second terminal device
  • the demodulation information only needs to contain these two information, and may also be other transmission modes, which are not limited in this paper.
  • the reference signal used by the terminal device may be a DMRS or a User Equipment Specific Reference Signal (UE Specific RS), and the transmission of the terminal device
  • the reference signal used by the terminal device may be a Cell Specific Reference Signal (CSRS).
  • the modulation information in the foregoing four cases may further include modulation mode combination information or a modulation mode of the first terminal device (the first terminal device may also be obtained by blind detection);
  • the demodulation information carries a modulation mode and power pairing information of the first terminal device on each of the spatial layers;
  • the power pairing information is that the base station is configured by the first terminal device and the second terminal device
  • the demodulation information further carries modulation mode combination information, where the modulation mode combination information is that the base station performs on the at least two spatial layers.
  • the modulation mode is scheduled to be the same.
  • the first terminal device after the first terminal device receives the demodulation information sent by the base station, the first terminal device receives the received information according to the demodulated information. Before the transmitting signal of the second terminal device is demodulated, the method further includes:
  • the first terminal device performs channel estimation by using a reference signal of the first terminal device and a reference signal of the second terminal device to obtain the power allocation information.
  • the method further includes:
  • the first terminal device receives downlink control signaling that carries the modulation mode combination information that is sent by the base station when the first terminal device and the second terminal device use the same at least two spatial layers.
  • the modulation mode combination information is obtained by combining the modulation modes of the first terminal device and the second terminal device on the same two spatial layers.
  • the reference signal used by the second terminal device on the pairing space layer is obtained according to at least one of the following items:
  • the demodulation information may further include a multiplexing mode and transmission information; the multiplexing type table Corresponding information indicating a data signal of the first terminal device and a reference signal used by the second terminal device on the pairing space layer, where the transmission information includes the first terminal device and the second terminal device The signals, data, and signals and data sent by the second terminal device when the pairing is performed.
  • the first terminal device after the first terminal device receives the demodulation information sent by the base station, the first terminal device transmits the received second terminal device according to the demodulation information.
  • the method further includes one of the following:
  • the first terminal device performs channel estimation on the reference signal of the second terminal device corresponding to the antenna port or the scrambling identifier, and obtains a second power used by the second terminal device to send the transmission signal. And obtaining the power pairing information according to the second power and the first power used by the first terminal device to send a signal; and obtaining the layer pairing according to the layer sequence number and a layer sequence number of the first terminal device information;
  • the first terminal device performs channel estimation on the reference signal of the second terminal device corresponding to the scrambling identifier, and obtains a second power used by the second terminal device to send the transmission signal, and according to The second power and the first power used by the first terminal device to send a signal obtain the power pairing information;
  • the first terminal device demodulates the received transmission signal of the second terminal device according to the demodulation information, and includes:
  • the first terminal device demodulates the transmission signal according to the power pairing information and the layer pairing information.
  • a base station 30 in an embodiment of the invention includes:
  • the processing module 301 is configured to determine a first transmission type of the first terminal device and a second transmission type of the second terminal device;
  • the sending module 302 is configured to send, according to the first transmission type and the second transmission type determined by the processing module, demodulation information to the first terminal device by using downlink control signaling, where the demodulation The information is used to instruct the first terminal device to demodulate the transmission signal of the first terminal device received by the first terminal device.
  • the demodulation information includes control information for demodulating a transmission signal of the first terminal device, and control information for demodulating a transmission signal of the second terminal device.
  • the processing module 301 determines, according to the transmission mode of the first terminal device and the second terminal device, the content of the demodulated information, and effectively solves the multi-layer pairing.
  • the power ratios configured on different sub-bands are different, a large amount of signaling is required to notify the first terminal device, which reduces unnecessary signaling overhead to a certain extent, and enables the first terminal device to obtain demodulation dynamically and accurately.
  • the first terminal device transmits signals to achieve the purpose of correct descrambling.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on codebook transmission
  • the demodulation information includes the second terminal device a transmission mode, layer pairing information between the first terminal device and the second terminal device, or a transmission mode of the second terminal device, the first terminal device and the second terminal device Layer pairing information between the two.
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the demodulation information includes the first terminal device and Layer pairing information between the second terminal device, power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the first terminal device is used on a paired space layer.
  • a reference signal when the reference signal used by the second terminal device on the paired space layer is the same,
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and power pairing information between the first terminal device and the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the first terminal device is used on a paired space layer.
  • a reference signal when the reference signal used by the second terminal device on the paired spatial layer is different, the demodulation information includes a layer pairing between the first terminal device and the second terminal device Information, power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the demodulation information further includes a multiplexing mode and transmission information, where the multiplexing mode indicates that the data signal of the first terminal device and the second terminal device are in the Correlation information of a reference signal used on the pairing layer, the transmission information includes a signal, data, and the first received by the first terminal device when the first terminal device and the second terminal device are paired The signals and data received by the two terminal devices.
  • the demodulation information carries the first terminal device in each Modulation mode and power pairing information on the spatial layer
  • the power pairing information is that the base station is configured by the first terminal device and the second terminal device
  • the demodulation information further carries modulation mode combination information, where the modulation mode combination information is that the base station uses the first terminal device and the The second terminal device obtains the same modulation mode on the at least two spatial layers.
  • the processing module 301 is further configured to:
  • the reference signal used by the second terminal device based on the non-codebook transmission conflicts with the data transmitted by the first terminal device based on the codebook transmission in the time domain and the frequency domain, to the first terminal
  • the data of the device is punctured or rate matched;
  • the reference signal used by the first terminal device based on the non-codebook transmission and the transmitted data of the second terminal device based on the codebook transmission collide in the time domain and the frequency domain,
  • the data sent by the second terminal device is punctured or rate matched.
  • the first terminal device 40 for performing the above method for demodulating a signal is described below.
  • the first terminal device 40 in the embodiment of the present invention includes:
  • the receiving module 401 is configured to receive demodulation information sent by the base station, where the demodulation information is that the base station passes the downlink control signal according to the first transmission type of the first terminal device and the second transmission type of the second terminal device. Order to send information;
  • the processing module 402 is configured to demodulate the received transmission signal of the first terminal device according to the demodulation information.
  • the demodulation information includes control information for demodulating a transmission signal of the first terminal device, and control information for demodulating a transmission signal of the second terminal device.
  • the receiving module 401 receives the demodulation information sent by the base station according to the transmission mode of the first terminal device and the second terminal device, and the processing module 402 determines the content of the demodulated information according to the content of the demodulated information.
  • the received transmission signal is demodulated, and the unnecessary signaling overhead is also reduced to a certain extent, and the first terminal device can dynamically and accurately obtain the transmission signal of the first terminal device, thereby achieving correct descrambling. the goal of.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on codebook transmission
  • the demodulation information includes the second terminal device a transmission mode, layer pairing information between the first terminal device and the second terminal device, or a transmission mode of the second terminal device, the first terminal device and the second terminal device Layer pairing information between the two.
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the demodulation information includes the first terminal device and Layer pairing information between the second terminal device, the first terminal device and the second terminal device Prepare power pairing information between the two;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the first terminal device is used on a paired space layer.
  • a reference signal where the demodulation information includes layer pairing information between the first terminal device and the second terminal device, when the second terminal device is the same as the reference signal used by the pairing space layer
  • power pairing information between the first terminal device and the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the first terminal device is used on a paired space layer.
  • a reference signal when the reference signal used by the second terminal device on the paired spatial layer is different, the demodulation information includes a layer pairing between the first terminal device and the second terminal device Information, power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the demodulation information further includes a multiplexing mode and transmission information, where the multiplexing mode indicates that the data signal of the first terminal device and the second terminal device are in the Pairing the associated information of the reference signal used on the spatial layer, the transmission information includes a signal, data, and the received by the first terminal device when the first terminal device and the second terminal device are paired Signals and data received by the second terminal device.
  • the processing module 402 is further configured to perform one of the following:
  • Performing channel estimation on the reference signal of the second terminal device corresponding to the antenna port or the scrambling identifier, and obtaining a second power used by the second terminal device to send the transmission signal, and according to the The second power and the first power used by the first terminal device to transmit a signal are obtained Power pairing information; obtaining the layer pairing information according to the layer sequence number and a layer sequence number of the first terminal device;
  • the processing module 402 is specifically configured to:
  • the reference signal used by the second terminal device on the pairing space layer is obtained according to at least one of the following items:
  • the demodulation information carries the first terminal device in each Modulation mode and power pairing information on the spatial layer
  • the power pairing information is that the base station is configured by the first terminal device and the second terminal device
  • the demodulation information further carries modulation mode combination information, where the modulation mode combination information is that the base station uses the first terminal device and the The second terminal device obtains the same modulation mode on the at least two spatial layers.
  • the present invention also provides a computer storage medium storing a program, the program including some or all of the steps of the method for transmitting downlink control signaling or the method for demodulating signals.
  • the present invention also provides a computer storage medium storing a program, the program comprising: a method in which the base station performs a downlink control signaling transmission or a part in a method in which the first terminal device performs a demodulation signal Or all steps.
  • the processing module 301 of the base station 30 in FIG. 3 may be implemented by a processor, and the sending module 302 may be implemented by a transmitter.
  • FIG. 5 is another schematic structural diagram of a base station 50 according to an embodiment of the present invention.
  • Base station 50 can include at least one network interface or other communication interface, at least one receiver 501, at least one transmitter 502, at least one processor 503, and memory 504 to enable connection communication between the devices through at least one network interface (
  • the communication connection between the system gateway and at least one other network element may be implemented by wired or wireless, and may use an Internet, a wide area network, a local network, a metropolitan area network, or the like.
  • the memory 504 can include read only memory and random access memory, and provides instructions and data to the processor 503.
  • a portion of the memory 504 can also include, possibly including, a high speed random access memory (RAM), and possibly a non- Un-volatile memory.
  • RAM high speed random access memory
  • Memory 504 stores the following elements, executable modules or data structures, or subsets thereof, or their extended sets:
  • Operation instructions include various operation instructions for implementing various operations.
  • Operating system Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 503 performs the following operations by calling an operation instruction stored in the memory 504, which can be stored in the operating system:
  • the first terminal device demodulates the transmission signal of the first terminal device received by the first terminal device.
  • the demodulation information includes control information for demodulating a transmission signal of the first terminal device, and control information for demodulating a transmission signal of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the demodulation information includes a transmission mode of the second terminal device, the first Layer pairing information between the terminal device and the second terminal device, or a transmission mode of the second terminal device, and layer pairing between the first terminal device and the second terminal device information.
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the demodulation information includes the first terminal device and the second terminal device.
  • Layer pairing information power pairing information between the first terminal device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission, a reference signal used by the first terminal device on the paired space layer, and the first
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the first terminal Power pairing information between the device and the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission, a reference signal used by the first terminal device on the paired space layer, and the first
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the first terminal Power pairing information between the device and the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the demodulation information further includes a multiplexing mode and transmission information, where the multiplexing mode indicates a data signal of the first terminal device and a reference signal used by the second terminal device on the pairing layer.
  • the transmission information includes signals, data received by the first terminal device, and signals received by the second terminal device when the first terminal device and the second terminal device are paired ,data.
  • the demodulation information carries a modulation of the first terminal device on each of the spatial layers.
  • Mode and power pairing information
  • the power pairing information is obtained by the base station scheduling the power allocation information of the first terminal device and the second terminal device on the at least two spatial layers to be the same, and the demodulation information further carries a modulation.
  • Mode combination information where the modulation mode combination information is obtained by the base station scheduling the modulation manners of the first terminal device and the second terminal device on the at least two spatial layers to be the same.
  • the processor 503 can perform the following steps:
  • the reference signal used by the second terminal device based on the non-codebook transmission conflicts with the data transmitted by the first terminal device based on the codebook transmission in the time domain and the frequency domain, to the first terminal
  • the data of the device is punctured or rate matched;
  • the reference signal used by the first terminal device based on the non-codebook transmission and the transmitted data of the second terminal device based on the codebook transmission collide in the time domain and the frequency domain,
  • the data sent by the second terminal device is punctured or rate matched.
  • the receiving module 401 of the first terminal device 40 in FIG. 4 may be implemented by a receiver, and the processing module 402 may be implemented by a processor.
  • FIG. 6 is another schematic structural diagram of the first terminal device 60 according to the embodiment of the present invention.
  • the first terminal device 60 can include at least one network interface or other communication interface, at least one receiver 601, at least one transmitter 602, at least one processor 603, and memory 604 to enable connection communication between the devices, through at least one
  • the network interface (which may be wired or wireless) implements a communication connection between the system gateway and at least one other network element, and may use an Internet, a wide area network, a local network, a metropolitan area network, or the like.
  • the memory 604 can include read-only memory and random access memory, and provides instructions and data to the processor 603.
  • a portion of the memory 604 can also include, possibly including, a high-speed random access memory (RAM), and possibly a non- Un-volatile memory.
  • RAM high-speed random access memory
  • the memory 604 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:
  • Operation instructions include various operation instructions for implementing various operations.
  • Operating system Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 603 performs the following operations by calling an operation instruction stored in the memory 604 (the operation instruction can be stored in the operating system):
  • the demodulation information includes control information for demodulating a transmission signal of the first terminal device, and control information for demodulating a transmission signal of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the demodulation information includes a transmission mode of the second terminal device, the first Layer pairing information between the terminal device and the second terminal device, or a transmission mode of the second terminal device, and layer pairing between the first terminal device and the second terminal device information.
  • the first transmission type is based on codebook transmission
  • the second transmission type is based on non-codebook transmission
  • the demodulation information includes the first terminal device and the second terminal device.
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission
  • a reference signal used by the first terminal device on the paired space layer and the first
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the first terminal device Power pairing information with both the second terminal device.
  • the first transmission type is based on non-codebook transmission
  • the second transmission type is based on non-codebook transmission, a reference signal used by the first terminal device on the paired space layer, and the first
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and the first terminal Equipment Power pairing information with both the second terminal device;
  • the demodulation information includes an antenna port of the second terminal device, a scrambling identifier of the second terminal device, and a layer sequence number of the second terminal device;
  • the demodulation information includes layer pairing information between the first terminal device and the second terminal device, and a scrambling identifier of the second terminal device.
  • the demodulation information further includes a multiplexing mode and transmission information, where the multiplexing mode indicates a data signal of the first terminal device and a reference used by the second terminal device on the pairing space layer.
  • Information related to the signal, the transmission information includes a signal, data received by the first terminal device, and received by the second terminal device when the first terminal device and the second terminal device are paired Signal, data.
  • the processor 603 may further perform the following steps:
  • the layer pairing information is obtained according to the layer sequence number and a layer sequence number of the first terminal device
  • the reference signal used by the second terminal device on the pairing space layer is obtained according to at least one of the following items:
  • the demodulation information carries a modulation of the first terminal device on each of the spatial layers.
  • Mode and power pairing information
  • the first terminal device uses the same at least two spatial layers as the second terminal device
  • the power pairing information is obtained by the base station scheduling the power allocation information of the first terminal device and the second terminal device on the at least two spatial layers to be the same, and the demodulation information is further obtained.
  • And carrying the modulation mode combination information where the modulation mode combination information is obtained by the base station scheduling the modulation manners of the first terminal device and the second terminal device on the at least two spatial layers to be the same.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the medium includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明提供了一种下行控制信令发送的方法及设备,所述方法包括:基站确定第一终端设备的第一传输类型和第二终端设备的第二传输类型;所述基站根据所述第一传输类型和所述第二传输类型,通过下行控制信令向所述第一终端设备发送解调信息,所述解调信息用于指示所述第一终端设备解调所述第一终端设备接收到的所述第一终端设备的传输信号。实现有针对性的确定发送解调信息的内容,有效解决在多层配对时,不同子带上配置的功率比率不同时需要消耗大量的信令来通知第一终端设备的问题,一定程度上减少了不必要信令开销,也使得第一终端设备可以动态、准确的获取解调第一终端设备的传输信号,从而达到正确解扰的目的。

Description

一种下行控制信令发送的方法及设备 技术领域
本发明涉及无线通信技术领域,尤其涉及的是一种下行控制信令发送的方法及设备。
背景技术
在第三代合作伙伴计划(The 3rd Generation Partnership Project,3GPP)长期演进((Long Term Evolution,LTE)/高级长期演进(Long Term Evolution-Advanced,LTE-A)系统中,下行多址接入方式通常采用OFDM的正交频分多址方式,即不同用户使用不同的时、频资源,以确保用户之间的信号接收互不干扰,但传输速率较低。目前,对于单流或单层的配对主要采用非正交多址接入(Non-orthogonal Multiplexing Access,NOMA)或半正交多址接入(Semi-orthogonal Multiplexing Access,SOMA)两种技术为用户动态分配功率,以实现用户之间的无干扰的高速传输,及提升系统的吞吐量。其中,NOMA是将单个资源分配给多个用户,多个用户的传输信号在时/频域上叠加,然后通过给不同的用户分配不同的功率确保用户侧的准确接收。SOMA则是在NOMA基础上进一步利用现有调制方式或星座图的格雷编码特性,使得用户接收机采用简单的接收算法,实现用户间的叠加传输,提升系统性能。
而在多层用户配对的应用中,现有的LTE系统中小区内的UE一般有多种传输模式(如基于码本的空分复用,基于非码本的空分复用等),而使用相同或不同的传输模式的UE之间进行非正交或半正交传输时,UE获取功率配对信息或层配对信息的方式有所不同。其中,功率配对信息可以通过高层信令或者物理层信令或其他非显式方式通知UE。
由于通知功率配对信息所需要的比特相对较多,开销较大,且在不同子带上配置的功率不同时,需要消耗更多的信令,一定程度上会增加系统信令开销,也减小系统增益。
发明内容
本发明提供了一种下行控制信令发送的方法及设备,能够解决现有技术中在不同传输模式下,通知功率配对信息或层配对信息时,信令开销较大的问题。
本发明实施例第一方面提供了一种下行控制信令发送的方法,其所述方法包括:
基站确定第一终端设备的第一传输类型和第二终端设备的第二传输类型;
所述基站根据所述第一传输类型和所述第二传输类型,通过下行控制信令向所述第一终端设备发送解调信息,所述解调信息用于指示所述第一终端设备解调所述第一终端设备接收到的所述第一终端设备的传输信号。
结合第一方面,本发明第一方面的第一种实现方式中,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
结合第一方面或第一方面的第一种实现方式,本发明第一方面的第二种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
结合第一方面或第一方面的第一种实现方式,本发明第一方面的第三种实现方式中,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
结合第一方面或第一方面的第一种实现方式,本发明第一方面的第四种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非 码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
结合第一方面或第一方面的第一种实现方式,本发明第一方面的第五种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
结合第一方面的第一种至第五种实现方式中的任一种,本发明第一方面的第六种实现方式中,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
结合第一方面或第一方面的第一种至第六种实现方式中的任一种,本发明第一方面的第七种实现方式中,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
结合第一方面的第七种实现方式中的任一种,本发明第一方面的第八种实现方式中,所述方法还包括:
当基于非码本传输的所述第二终端设备所使用的参考信号与基于码本传输的所述第一终端设备的发送的数据在时域和频域上发生冲突时,所述基站对所述第一终端设备发送的数据进行打孔或速率匹配;
或,当基于非码本传输的所述第一终端设备所使用的参考信号与基于码本传输的所述第二终端设备的发送的数据在时域和频域上发生冲突时,所述基站对所述第二终端设备发送的数据进行打孔或速率匹配。
本发明第二方面提供一种解调信号的方法,所述方法包括:
第一终端设备接收基站发送的解调信息,所述解调信息为所述基站根据所述第一终端设备的第一传输类型和第二终端设备的第二传输类型,通过下行控制信令发送的信息;
所述第一终端设备根据所述解调信息对接收到的所述第一终端设备的传输信号进行解调。
结合第二方面,本发明第二方面的第一种实现方式中,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
结合第二方面或第二方面的第一种实现方式,本发明第二方面的第二种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
结合第二方面或第二方面的第一种实现方式,本发明第二方面的第三种实现方式中,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设 备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
结合第二方面或第二方面的第一种实现方式,本发明第二方面的第四种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
结合第二方面或第二方面的第一种实现方式,本发明第二方面的第五种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
结合第二方面的第一种至第五种实现方式中的任一种,本发明第二方面的第六种实现方式中,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对空间层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
结合第二方面的第二种至第六种实现方式中的任一种,本发明第二方面的第七种实现方式中,所述第一终端设备接收基站发送的解调信息之后,所述第一终端设备根据所述解调信息对接收到的所述第二终端设备的传输信号进行解调之前,所述方法还包括如下项中之一:
所述第一终端设备对所述天线端口或所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;根据所述层序号和所述第一终端设备的层序号得到所述层配对信息;
或,所述第一终端设备对所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;
所述第一终端设备根据所述解调信息对接收到的所述第二终端设备的传输信号进行解调,包括:
所述第一终端设备根据所述功率配对信息和所述层配对信息对所述传输信号进行解调。
结合第二方面的第一种至第七种实现方式中的任一种,本发明第二方面的第八种实现方式中,所述第二终端设备在配对空间层上使用的参考信号根据以下项中的至少一项获取:
由所述第一终端设备检测信道获取;
根据所述天线端口得到;
或根据所述加扰标识得到。
结合第二方面的第一种至第八种实现方式中的任一种,本发明第二方面的第九种实现方式中,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
本发明第三方面提供一种基站,所述基站包括:
处理模块,用于确定第一终端设备的第一传输类型和第二终端设备的第二传输类型;
发送模块,用于根据所述处理模块确定的所述第一传输类型和所述第二传输类型,通过下行控制信令向所述第一终端设备发送解调信息,所述解调信息用于指示所述第一终端设备解调所述第一终端设备接收到的所述第一终端设备的传输信号。
结合第三方面,本发明第三方面的第一种实现方式中,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
结合第三方面或第三方面的第一种实现方式,本发明第三方面的第二种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
结合第三方面或第三方面的第一种实现方式,本发明第三方面的第三种实现方式中,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
结合第三方面或第三方面的第一种实现方式,本发明第三方面的第四种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与 所述第二终端设备两者之间的功率配对信息。
结合第三方面或第三方面的第一种实现方式,本发明第三方面的第五种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
结合第三方面的第一种至第五种实现方式中的任一种,本发明第三方面的第六种实现方式中,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
结合第三方面或第三方面的第一种至第六种实现方式中的任一种,本发明第三方面的第七种实现方式中,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
结合第三方面的第七种实现方式中的任一种,本发明第三方面的第八种实现方式中,所述处理模块还用于:
当基于非码本传输的所述第二终端设备所使用的参考信号与基于码本传 输的所述第一终端设备发送的数据在时域和频域上发生冲突时,对所述第一终端设备的数据进行打孔或速率匹配;
或,当基于非码本传输的所述第一终端设备所使用的参考信号与基于码本传输的所述第二终端设备的发送的数据在时域和频域上发生冲突时,对所述第二终端设备发送的数据进行打孔或速率匹配。
本发明第四方面提供一种第一终端设备,所述第一终端设备包括:
接收模块,用于接收基站发送的解调信息,所述解调信息为所述基站根据所述第一终端设备的第一传输类型和第二终端设备的第二传输类型,通过下行控制信令发送的信息;
处理模块,用于根据所述解调信息对接收到的所述第一终端设备的传输信号进行解调。
结合第四方面,本发明第四方面的第一种实现方式中,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
结合第四方面或第四方面的第一种实现方式,本发明第四方面的第二种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
结合第四方面或第四方面的第一种实现方式,本发明第四方面的第三种实现方式中,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
结合第四方面或第四方面的第一种实现方式,本发明第四方面的第四种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
结合第四方面或第四方面的第一种实现方式,本发明第四方面的第五种实现方式中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
结合第四方面的第一种至第五种实现方式中的任一种,本发明第四方面的第六种实现方式中,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对空间层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
结合第四方面的第二种至第六种实现方式中的任一种,本发明第四方面的第七种实现方式中,所述处理模块还用于执行如下项中之一:
对所述天线端口或所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;根据所述层序号和所述第一终端设备的层序号得到所述层配对信息;
或,对所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;
所述处理模块具体用于:
根据所述功率配对信息和所述层配对信息对所述传输信号进行解调。
结合第四方面的第一种至第七种实现方式中的任一种,本发明第四方面的第八种实现方式中,所述第二终端设备在配对空间层上使用的参考信号根据以下项中的至少一项获取:
由所述第一终端设备检测信道获取;
根据所述天线端口得到;
或根据所述加扰标识得到。
结合第四方面的第一种至第八种实现方式中的任一种,本发明第四方面的第九种实现方式中,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
本发明中,在多层配对时,基站根据第一终端设备和第二终端设备两者的传输模式针对性的确定发送解调信息的内容,一定程度上也减少了不必要信令开销,也使得第一终端设备可以动态、准确的获取解调第一终端设备的传输信号,从而达到正确解调或干扰消除的目的。
附图说明
图1为本发明实施例中一种下行控制信令发送的方法的流程图;
图2为本发明实施例中一种解调信号的方法的流程图;
图3为本发明实施例中一种基站的结构图;
图4为本发明实施例中一种第一终端设备的结构图;
图5为本发明实施例中另一种基站的结构图;
图6为本发明实施例中另一种第一终端设备的结构图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,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,本领域技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或模块的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或模块,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或模块,本文中所出现的模块的划分,仅仅是一种逻辑上的划分,实际应用中实现时可以有另外的划分方式,例如多个模块可以结合成或集成在另一个系统中,或一些特征可以忽略,或不执行,另外,所显示的或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,模块之间的间接耦合或通信连接可以是电性或其他类似的形式,本文中均不作限定。并且,作为分离部件说明的模块或子模块可以是也可以不是物理上的分离,可以是也可以不是物理模块,或者可以分不到多个电路模块中,可以根据实际的需要选择其中的部分或全部模块来实现本发明实施例方案的目的。
本发明实施例提供了一种下行控制信令发送的方法及设备,用于LTE通信系统,具体用于物理下行共享信道(Physical Downlink Shared Channel,PDSCH)的信号发送和接收。以下进行详细说明。
现有的LTE系统的小区内的终端设备有多种传输模式,例如,基于码本的空分复用,基于非码本的空分复用等,而使用相同或不同的传输模式的终端 设备之间进行非正交传输或半正交传输时,每个终端设备获取层配对信息和功率配对信息的方式有所不同。终端设备会将接收到的其他终端设备的传输信号当作干扰信号,故可能需要进行干扰消除以正确解调自身的传输信号。
举例来说,处于小区中心的第一终端设备A解调自身的传输信号时,会将处于小区边缘的第二终端设备B的传输信号当作干扰,因此,第一终端设备A需要根据基站发送的下行控制信令来实现解调,该下行控制信令主要包括功率配对信息、层配对信息及第二终端设备B的调制方式或复合星座图调制方式(即为第一终端设备A和第二终端设备B两者信号叠加的结果)等。
其中,功率配对信息用于指示A和B之间的功率分配比率,使得A能够计算复合星座图的大小和A接收到的信号的大小,从而进行干扰删除和解调。
层配对信息用于指示终端设备之间的层配对关系,如第一终端设备A传输时使用了2个空间层,而第二终端设备B使用了一个空间层,且B的空间层与第一终端设备A的第一空间层进行了非正交或半正交叠加,那么第一终端设备A需知道第二终端设备B的空间层与第一终端设备A的第一个空间层进行了非正交或半正交叠加。因此第一终端设备A可以根据下表1中所示的映射关系获取如下状态:
Figure PCTCN2015090516-appb-000001
表1
另外,层配对信息的获得方式也可以是将第二终端设备B用户所使用的天线端口号通知第一终端设备A,使得第一终端设备A能够获得第一终端设备A和第二终端设备B的层映射关系。
可以理解的是,第一终端设备A和第二终端设备B都仅使用一个空间层 时,不存在层配对关系,第一终端设备A解调信号时不需要获取层配对信息。本文中的层配对信息包括处于配对状态的第一终端设备A和第二终端设备B两者在每个配对空间层上的配对信息,另外,功率配对信息包括处于配对状态的第一终端设备A和第二终端设备B两者在每个配对的空间层上的功率分配信息。
第一终端设备A要解调自身接收到的传输信号需要利用层配对信息、功率配对信息及第二终端设备B的调制方式或复合星座图的调制方式来计算得到复合星座图的形状及大小,从而可以根据复合星座图正确解调该传输信号,该第二终端设备B的调制方式或复合星座图的调制方式可以是通过基站下发的下行控制信令中获得,也可以是由第一终端设备A自行盲目检测得到,具体不做限定。
由于现有的通过下行控制信令通知解调信息所需的信令开销较大,为减少信令开销,本发明实施例中主要解决手段是基站根据第一终端设备A的传输类型和第二终端设备B的传输类型来确定下行控制信令所携带的调制信息,以通知第一终端设备A,使得第一终端设备A可以实现对信号的准确解调。其中,传输类型有基于码本(Codebook Based)传输或基于非码本(Non-Codebook Based)传输。
其中,基于码本传输可以解释为:接收端已知发送端发送数据时所采用的预编码矩阵信息(发送矩阵的可选集为有限个),即发送端在发送数据的同时也在下行信令中告知接收端发送数据所使用的预编码矩阵信息;或接收端和发送端预先约定,或暗含通知;
非码本传输可解释为:发送端发送数据时所采用的预编码矩阵信息对接收端透明,接收端不必知道发送端发送数据时所采用的预编码矩阵信息,发送端发送数据时所采用的预编码矩阵集合可以为无限集。
本发明主要用于解决以下几种传输模式的组合时,第一终端设备A如何获取解调信息的问题,具体如下表2::
Figure PCTCN2015090516-appb-000002
表2
其中TM代表传输模式(Transport Mode,TM),DMRS代表解调参考信号(Demodulation Reference Signal,DMRS)。
请参照图1,以下从基站角度对本发明实施例中的一种下行控制信令发送的方法进行说明,所述方法包括:
101、基站确定第一终端设备的第一传输类型和第二终端设备的第二传输类型;
102、所述基站根据所述第一传输类型和所述第二传输类型,通过下行控制信令向所述第一终端设备发送携带解调信息;
其中,所述解调信息用于指示所述第一终端设备解调所述第一终端设备接收到的所述第一终端设备的传输信号,或者用于指示所述第一终端设备解调所述第一终端设备接收到的所述第一终端设备的传输信号,及解调所述第一终端设备接收到的所述第二终端设备的传输信号。
举例来说,第一终端解调所述第一终端设备接收到的所述第一终端设备的传输信号时,需要得到第二终端设备的调制信息,比如第一终端设备和第二终端设备两者的复合星座图为64正交幅度调制(Quadrature Amplitude Modulation,QAM),第一终端设备采用的是16QAM,第二终端设备为正交相移编码(Quadrature Phase Shift Keying,QPSK),只有当第一终端设备获得第二终端设备的调制类型信息时才能知道复合星座图为64QAM,从而第以终端 设备可以按照复合星座图解调自己的信号,而不必解调第二终端设备的传输信号。但非正交多址接入(Non-Orthogonal Multiplexing Access,NOMA)的CW-IC接收机需要解调第二终端设备的传输信号。
本发明实施例中,在多层配对时,基站根据第一终端设备和第二终端设备两者的传输模式有针对性的确定发送解调信息的内容,有效解决在多层配对时,不同子带上配置的功率比率不同时需要消耗大量的信令来通知第一终端设备的问题,一定程度上减少了不必要信令开销,也使得第一终端设备可以动态、准确的获取解调第一终端设备的传输信号,从而达到正确解扰的目的。
上述解调信息可以是:a、解调所述第一终端设备的控制信息,和/或,b、解调所述第二终端设备的部分或全部控制信息。
则上述基站可以根据实际情况决定发送解调信息的方式,即上述通过下行控制信令向所述第一终端设备发送携带解调信息,具体包括:
1、只发送一次/个下行控制信令:
此时,该调制信息包括上述a和b,即通过第一下行控制信令发送a和b。
其中,发送下行控制信令时,若a和b所占的比特较多或仅有一个用户需要,则,还可以通过至少两个控制信道发送,例如,a和b共有100比特,可以分别通过两个控制信道分别发送50比特,一定程度上可以节约资源。
2、发送至少两次下行控制信令:
分别发送上述a和b;
具体为:通过第一下行控制信令发送a,通过第二下行控制信令发送b,或将a和b通过多次信令发送。此处的控制信令也可以是分别通过至少两个控制信道发送。
举例来说,由于传输模式有很多种,所以第一终端设备和第二终端设备彼此的传输类型可能相同或不同,传输类型有基于码本(Codebook Based)传输或基于非码本(Non-Codebook Based)传输。例如,在传输模式为TM2/3/4/5/6时,该传输模式对应的发送分集传输模式和/或空分复用传输类型可归类为基于码本传输,在传输模式为TM7/8/9/10时,该传输模式对应的空分复用传输类型是基于非码本传输,而其对应的发送分集传输模式可归类为基于非码本传输。可选的,也可以通过载波聚合多次发送携带上述解调信息的下行控制信令, 以提高可靠性。
在基站为终端设备选择不同的传输模式时,传输模式所对应的传输类型也可能不同或相同,大致可以分为以下几种情况:
1、所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。该传输模式为3GPP定义的传输模式,例如:TM1/2/3/4/5/6/7/8/910。该传输方式为3GPP定义的传输方式,例如:发送分集、大时延循环时延分集、闭环空分复用、多用户多入多出(Multiple Input Multiple Ouput,MIMO)等。
此种情况考虑了基于非码本传输的第一终端设备,与基于码本传输的第二终端设备两者在进行非正交叠加传输或半正交叠加传输时,如何发送相应的下行控制信令以使第一终端设备解调自身的传输信号的场景。
2、所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口(Antenna Ports)、所述第二终端设备的加扰标识(Scrambling Identity,SCID)和所述第二终端设备的层序号(Number of Layers),使得第一终端设备可以根据SCID得到功率配对信息,根据层序号得到层配对信息,例如,第二终端设备的传输模式为TM9时,解调信息只需要包含这三个信息,也可以是其他传输模式,具体本文中均不限定。
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识,例如,第二终端设备的传输模式为TM8时,解调信息只需要包含这两个信息,也可以是其他传输模式,具体本文中均不限定。
其中,该加扰标识为上述参考信号生成时的参数,加扰标识根据3GPP协议中与物理下行共享信道传输有关的下行控制信息(Downlink Control Information,DCI)格式(2B、2C或2D)定义。
此种情况下,由于终端设备的传输模式不同,基站发给终端设备的下行控制信令的内容也会相应不同,例如:若第二终端设备采用TM8时,则下行控制信令中只能包括SCID和层配对信息,即需要额外发送层配对信息;若第二终端设备采用TM9时,则下行控制信令中只能包括“Antenna Ports、SCID及Number of Layers),即不需要另外发送层配对信息。其他传输模式的情况不再赘述。
3、所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。可选的,该参考信号可以通过下行信令配置相同或者约定为相同。
此种情况下,两者使用的参考信号相同时,第一终端设备就不需要根据第二终端设备的SCID来获取第二终端设备所使用的参考信号,即基站可以不用将SCID发送给第一终端设备。
4、所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号,例如,第二终端设备的传输模式为TM9时,解调信息只需要包含这三个信息,也可以是其他传输模式,具体本文中均不限定。
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识,例如,第二终端设备的传输模式为TM8时,解调信息只需要包含这两个信息,也可以是其他传输模式,具体本文中均不限定。可选的,该参考信号可以通过下行信令配置不同或者约定为不同(可以通过设置不同的SCID值来体现)。
以上4种情况中,终端设备的传输类型为基于非码本时,终端设备所使用的参考信号可以为DMRS或用户设备特殊参考信号(User Equipment Specific Reference Signal,UE Specific RS),终端设备的传输类型为基于码本时,终端设备所使用的参考信号可以为小区公共参考信号(Cell Specific Reference Signal,CSRS)。
举例来说,所述第一终端设备可以通过对所述天线端口或所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,最终得到上述功率配对信息,另外,第一终端设备可以根据所述层序号得到所述层配对信息。
具体的,该第一终端设备获取功率配对信息和层配对信息的方式如下:
所述第一终端设备对所述天线端口或所述加扰标识对应的所述第二终端设备在配对空间层上使用的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;根据所述层序号和所述第一终端设备的层序号得到所述层配对信息;
或,所述第一终端设备对所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息。
其中,第一终端设备可以根据以下相中的至少一项获取第二终端设备在配对空间层上使用的参考信号:
所述第一终端设备检测信道得到;
根据所述天线端口得到;
或根据所述加扰标识得到。
可选的,上述4种情况中的调制信息还可以包括调制方式组合信息或所述第一终端设备的调制方式(第一终端设备也可以通过盲目检测得到),其中调制方式组合信息或该调制方式可参考表3;
Figure PCTCN2015090516-appb-000003
表3
由表3可知,该调制方式组合信息或该调制方式具体可以包括以下两种情况中的一种:
当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;即所述基站需要分别将所述第一终端设备在每个配对空间层上的调制方式和功率配对信息发送至第一终端设备。
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到;即所述基站向第一终端设备发送携带调度后的调制方式组合信息和功率配对信息的下行控制信令,故只需要通知一组调制方式组合信息和功率配对信息,从而减少信令开销。其中,不同的调制方式组合信息所对应的功率配对信息的可选集是可变的。
可选的,上述解调信息还可以包括复用模式和传输信息,所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所发送的信号、数据,以及所述第二终端设备所发送的信号、数据。
可选的,在一些发明实施例中,所述方法还包括:
当基于非码本传输的所述第二终端设备所使用的参考信号与基于码本传输的所述第一终端设备的发送的数据在时域和频域上发生冲突时,所述基站对所述第一终端设备发送的数据进行打孔或速率匹配;
或,当基于非码本传输的所述第一终端设备所使用的参考信号与基于码本传输的所述第二终端设备的发送的数据在时域和频域上发生冲突时,所述基站对所述第二终端设备发送的数据进行打孔或速率匹配。
举例来说,在LTE系统的小区中,当两个用户采用的传输模式TM不同时,如处于小区中心的中心用户的传输模式为TM2,处于小区边缘的边缘用户的传输模式为TM9,当这两个用户的信号按照目前的LTE协议的信号发送类型进行叠加时,TM2下的部分数据与TM9的DMRS(参考信号)叠加,故会出现数据和参考信号的冲突现象。
通过采用本可选实施例中的打孔或速率匹配方式,可以解决上述冲突现象。当两个用户的数据和参考信号冲突时:
1、直接叠加,按照现在的LTE信号发送类型发送信号。
2、TM2用户在TM9用户的参考信号位置不发送信号。
其中,不发送信号的情况有两种:
a、TM2用户按照目前的LTE协议的信号发送类型进行信号映射,但在TM9用户的参考信号位置不发送数据信号。
b、由于TM9用户的参考信号已被被占用,故TM2用户在编码和速率匹配时不能传输数据,而是先选择除TM9用户的参考信号位置的时频资源,再进行速率匹配。
请参照图2,以下从第一终端设备的角度对本发明实施例中的一种下行控制信令发送的方法进行说明,所述方法包括:
201、第一终端设备接收基站发送的解调信息;
其中,所述解调信息为所述基站根据所述第一终端设备的第一传输类型和第二终端设备的第二传输类型,通过下行控制信令发送的信息;上述解调信息 包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
202、所述第一终端设备根据所述解调信息对接收到的所述第一终端设备的传输信号进行解调。
本发明实施例中,在多层配对时,第一终端设备接收基站根据第一终端设备和第二终端设备两者的传输模式所发送的解调信息,并根据该解调信息的内容对接收到的自身的传输信号进行解调,一定程度上也减少了不必要信令开销,也使得第一终端设备可以动态、准确的获取解调第一终端设备的传输信号,从而达到正确解扰的目的。
举例来说,由于传输模式有很多种,所以第一终端设备和第二终端设备彼此的传输类型可能相同或不同,传输类型有基于码本或基于非码本。在终端设备选择不同的传输模式时,传输模式所对应的传输类型也可能不同或相同,大致可以分为以下几种情况:
1、所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
2、所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号,例如,第二终端设备的传输模式为TM9时,解调信息只需要包含这三个信息,也可以是其他传输模式,具体本文中均不限定。
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识,例如,第二终端设备的传输模式为TM8时,解调信息只需要包含这两个信息,也可以是其他传输模式,具体本文中均不限定。
举例来说,所述第一终端设备可以通过对所述天线端口或所述加扰标识对 应的所述第二终端设备的参考信号进行信道估计,最终得到上述功率配对信息,另外,第一终端设备可以根据所述层序号得到所述层配对信息。
3、所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
4、所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号,例如,第二终端设备的传输模式为TM9时,解调信息只需要包含这三个信息,也可以是其他传输模式,具体本文中均不限定。
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识,例如,第二终端设备的传输模式为TM8时,解调信息只需要包含这二个信息,也可以是其他传输模式,具体本文中均不限定。
以上4种情况中,终端设备的传输类型为基于非码本时,终端设备所使用的参考信号可以为DMRS或用户设备特殊参考信号(User Equipment Specific Reference Signal,UE Specific RS),终端设备的传输类型为基于码本时,终端设备所使用的参考信号可以为小区公共参考信号(Cell Specific Reference Signal,CSRS)。
可选的,上述4种情况中的调制信息还可以包括调制方式组合信息或所述第一终端设备的调制方式(第一终端设备也可以通过盲目检测得到);
具体主要包括两种情况中的一种:
当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时, 所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述至少2个空间层上的调制方式调度为相同后得到。
可选的,在一些发明实施例中,在上述第4点的基础上所述第一终端设备接收基站发送的解调信息之后,所述第一终端设备根据所述解调信息对接收到的所述第二终端设备的传输信号进行解调之前,所述方法还包括:
所述第一终端设备利用所述第一终端设备的参考信号和所述第二终端设备的参考信号,进行信道估计,得到所述功率分配信息。
可选的,在一些发明实施例中,在上述第3点或第4点的基础上(即第一传输类型和第二传输类型均为非码本),所述方法还包括:
所述第一终端设备接收所述基站在所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,发送的携带所述第一终端设备的调制方式的下行控制信令;
或,所述第一终端设备接收所述基站在所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,发送的携带调制方式组合信息的下行控制信令,所述调制方式组合信息由所述第一终端设备与所述第二终端设备两者在所述相同的2个空间层上的调制方式组合得到。
可选的,所述第二终端设备在配对空间层上使用的参考信号根据以下项中至少一项获取:
由所述第一终端设备检测信道获取;
根据所述天线端口得到;
或根据所述加扰标识得到。
可选的,所述解调信息还可以包括复用模式和传输信息;所述复用类型表 示所述第一终端设备的数据信号与所述第二终端设备在所述配对空间层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所发送的信号、数据,以及所述第二终端设备所发送的信号、数据。
可选的,在一些发明实施例中,所述第一终端设备接收基站发送的解调信息之后,所述第一终端设备根据所述解调信息对接收到的所述第二终端设备的传输信号进行解调之前,所述方法还包括如下项中之一:
所述第一终端设备对所述天线端口或所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;根据所述层序号和所述第一终端设备的层序号得到所述层配对信息;
或,所述第一终端设备对所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;
所述第一终端设备根据所述解调信息对接收到的所述第二终端设备的传输信号进行解调,包括:
所述第一终端设备根据所述功率配对信息和所述层配对信息对所述传输信号进行解调。
以上对本发明中的一种下行控制信令发送的方法及一种解调信号的方法进行举例说明,下面对执行上述一种下行控制信令发送的方法的基站进行说明,参阅图3,本发明实施例中的一种基站30包括:
处理模块301,用于确定第一终端设备的第一传输类型和第二终端设备的第二传输类型;
发送模块302,用于根据所述处理模块确定的所述第一传输类型和所述第二传输类型,通过下行控制信令向所述第一终端设备发送解调信息,所述解调 信息用于指示所述第一终端设备解调所述第一终端设备接收到的所述第一终端设备的传输信号。
其中,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
本发明实施例,在多层配对时,通过处理模块301根据第一终端设备和第二终端设备两者的传输模式有针对性的确定发送解调信息的内容,有效解决在多层配对时,不同子带上配置的功率比率不同时需要消耗大量的信令来通知第一终端设备的问题,一定程度上减少了不必要信令开销,也使得第一终端设备可以动态、准确的获取解调第一终端设备的传输信号,从而达到正确解扰的目的。
可选的,在一些发明实施例中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
可选的,在一些发明实施例中,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
可选的,在一些发明实施例中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号相同时, 所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
可选的,在一些发明实施例中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
可选的,在一些发明实施例中,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
可选的,在一些发明实施例中,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
可选的,在一些发明实施例中,所述处理模块301还用于:
当基于非码本传输的所述第二终端设备所使用的参考信号与基于码本传输的所述第一终端设备发送的数据在时域和频域上发生冲突时,对所述第一终端设备的数据进行打孔或速率匹配;
或,当基于非码本传输的所述第一终端设备所使用的参考信号与基于码本传输的所述第二终端设备的发送的数据在时域和频域上发生冲突时,对所述第二终端设备发送的数据进行打孔或速率匹配。
下面对执行上述一种解调信号的方法的第一终端设备进行说明,参阅图4,本发明实施例中的第一终端设备40包括:
接收模块401,用于接收基站发送的解调信息,所述解调信息为所述基站根据所述第一终端设备的第一传输类型和第二终端设备的第二传输类型,通过下行控制信令发送的信息;
处理模块402,用于根据所述解调信息对接收到的所述第一终端设备的传输信号进行解调。
其中,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
本发明实施例中,在多层配对时,接收模块401接收基站根据第一终端设备和第二终端设备两者的传输模式所发送的解调信息,处理模块402根据该解调信息的内容对接收到的自身的传输信号进行解调,一定程度上也减少了不必要信令开销,也使得第一终端设备可以动态、准确的获取解调第一终端设备的传输信号,从而达到正确解扰的目的。
可选的,在一些发明实施例中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
可选的,在一些发明实施例中,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设 备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
可选的,在一些发明实施例中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
可选的,在一些发明实施例中,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
可选的,在一些发明实施例中,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对空间层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
可选的,在一些发明实施例中,所述处理模块402还用于执行如下项中之一:
对所述天线端口或所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述 功率配对信息;根据所述层序号和所述第一终端设备的层序号得到所述层配对信息;
或,对所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;
所述处理模块402具体用于:
根据所述功率配对信息和所述层配对信息对所述传输信号进行解调。
可选的,在一些发明实施例中,所述第二终端设备在配对空间层上使用的参考信号根据以下项中的至少一项获取:
由所述第一终端设备检测信道获取;
根据所述天线端口得到;
或根据所述加扰标识得到。
可选的,在一些发明实施例中,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
本发明还提供一种计算机存储介质,该介质存储有程序,该程序执行时包括上述一种下行控制信令发送的方法或一种解调信号的方法中的部分或者全部步骤。
本发明还提供一种计算机存储介质,该介质存储有程序,该程序执行时包括上述基站执行一种下行控制信令发送的方法或上述第一终端设备执行一种解调信号的方法中的部分或者全部步骤。
应注意,本发明实施例中,图3中基站30的处理模块301可以由处理器实现,发送模块302可以由发射器实现。
图5是本发明实施例基站50的另一结构示意图。基站50可包括至少一个网络接口或者其它通信接口、至少一个接收器501、至少一个发射器502、至少一个处理器503和存储器504,以实现这些装置之间的连接通信,通过至少一个网络接口(可以是有线或者无线)实现该系统网关与至少一个其它网元之间的通信连接,可以使用互联网,广域网,本地网,城域网等。
存储器504可以包括只读存储器和随机存取存储器,并向处理器503提供指令和数据,存储器504的一部分还可以包括可能包含高速随机存取存储器(RAM,Random Access Memory),也可能还包括非不稳定的存储器(non-volatile memory)。
存储器504存储了如下的元素,可执行模块或者数据结构,或者它们的子集,或者它们的扩展集:
操作指令:包括各种操作指令,用于实现各种操作。
操作系统:包括各种系统程序,用于实现各种基础业务以及处理基于硬件的任务。
在本发明实施例中,处理器503通过调用存储器504存储的操作指令(该操作指令可存储在操作系统中),执行如下操作:
确定第一终端设备的第一传输类型和第二终端设备的第二传输类型;
并根据所确定的所述第一传输类型和所述第二传输类型,利用发射器502通过下行控制信令向所述第一终端设备发送解调信息,所述解调信息用于指示所述第一终端设备解调所述第一终端设备接收到的所述第一终端设备的传输信号。
其中,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
可选的,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
可选的,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之 间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
可选的,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
可选的,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
可选的,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
可选的,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时, 所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
在一些实施方式中,上述处理器503还可以执行以下步骤:
当基于非码本传输的所述第二终端设备所使用的参考信号与基于码本传输的所述第一终端设备发送的数据在时域和频域上发生冲突时,对所述第一终端设备的数据进行打孔或速率匹配;
或,当基于非码本传输的所述第一终端设备所使用的参考信号与基于码本传输的所述第二终端设备的发送的数据在时域和频域上发生冲突时,对所述第二终端设备发送的数据进行打孔或速率匹配。
应注意,本发明实施例中,图4中第一终端设备40的接收模块401可以由接收器实现,处理模块402可以由处理器实现。
图6是本发明实施例第一终端设备60的另一结构示意图。第一终端设备60可包括至少一个网络接口或者其它通信接口、至少一个接收器601、至少一个发射器602、至少一个处理器603和存储器604,以实现这些装置之间的连接通信,通过至少一个网络接口(可以是有线或者无线)实现该系统网关与至少一个其它网元之间的通信连接,可以使用互联网,广域网,本地网,城域网等。
存储器604可以包括只读存储器和随机存取存储器,并向处理器603提供指令和数据,存储器604的一部分还可以包括可能包含高速随机存取存储器(RAM,Random Access Memory),也可能还包括非不稳定的存储器(non-volatile memory)。
存储器604存储了如下的元素,可执行模块或者数据结构,或者它们的子集,或者它们的扩展集:
操作指令:包括各种操作指令,用于实现各种操作。
操作系统:包括各种系统程序,用于实现各种基础业务以及处理基于硬件的任务。
在本发明实施例中,处理器603通过调用存储器604存储的操作指令(该操作指令可存储在操作系统中),执行如下操作:
通过接收器601接收基站发送的解调信息,所述解调信息为所述基站根据所述第一终端设备的第一传输类型和第二终端设备的第二传输类型,通过下行控制信令发送的信息;
并根据所述解调信息对接收到的所述第一终端设备的传输信号进行解调。
其中,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
可选的,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
可选的,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
可选的,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
可选的,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备 与所述第二终端设备两者之间的功率配对信息;
或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
可选的,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对空间层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
在一些实施方式中,上述处理器603还可以执行以下步骤:
对所述天线端口或所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;根据所述层序号和所述第一终端设备的层序号得到所述层配对信息;
或,对所述加扰标识对应的所述第二终端设备的参考信号进行信道估计,得到所述第二终端设备发送所述传输信号所使用的第二功率,并根据所述第二功率和所述第一终端设备发送信号所使用的第一功率得到所述功率配对信息;
根据所述功率配对信息和所述层配对信息对所述传输信号进行解调。
可选的,所述第二终端设备在配对空间层上使用的参考信号根据以下项中的至少一项获取:
由所述第一终端设备检测信道获取;
根据所述天线端口得到;
或根据所述加扰标识得到。
可选的,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层 时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述的部分,可以参见其他实施例的相关描述。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统,装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统,装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储 介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上对本发明所提供的一种下行控制信令发送的方法及设备进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。

Claims (18)

  1. 一种下行控制信令发送的方法,其特征在于,所述方法包括:
    基站确定第一终端设备的第一传输类型和第二终端设备的第二传输类型;
    所述基站根据所述第一传输类型和所述第二传输类型,通过下行控制信令向所述第一终端设备发送解调信息,所述解调信息用于指示所述第一终端设备解调所述第一终端设备接收到的所述第一终端设备的传输信号。
  2. 根据权利要求1所述的方法,其特征在于,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
  3. 根据权利要求1或2所述的方法,其特征在于,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
  4. 根据权利要求1或2所述的方法,其特征在于,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
    或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
    或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
  5. 根据权利要求1或2所述的方法,其特征在于,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
  6. 根据权利要求1或2所述的方法,其特征在于,所述第一传输类型为 基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
    或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
    或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
  7. 根据权利要求2至6任一所述的方法,其特征在于,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
  8. 根据权利要求1至7任一所述的方法,其特征在于,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
    或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
  9. 根据权利要求8所述的方法,其特征在于,所述方法还包括。
    当基于非码本传输的所述第二终端设备所使用的参考信号与基于码本传输的所述第一终端设备发送的数据在时域和频域上发生冲突时,所述基站对所述第一终端设备的数据进行打孔或速率匹配;
    或,当基于非码本传输的所述第一终端设备所使用的参考信号与基于码本传输的所述第二终端设备的发送的数据在时域和频域上发生冲突时,所述基站对所述第二终端设备发送的数据进行打孔或速率匹配。
  10. 一种基站,其特征在于,所述基站包括:
    处理模块,用于确定第一终端设备的第一传输类型和第二终端设备的第二传输类型;
    发送模块,用于根据所述处理模块确定的所述第一传输类型和所述第二传输类型,通过下行控制信令向所述第一终端设备发送解调信息,所述解调信息用于指示所述第一终端设备解调所述第一终端设备接收到的所述第一终端设备的传输信号。
  11. 根据权利要求10所述的基站,其特征在于,所述解调信息包括解调所述第一终端设备的传输信号的控制信息,及解调所述第二终端设备的传输信号的控制信息。
  12. 根据权利要求10或11所述的基站,其特征在于,所述第一传输类型为基于非码本传输,所述第二传输类型为基于码本传输时,所述解调信息包括所述第二终端设备的传输模式、所述第一终端设备与所述第二终端设备两者之间的层配对信息,或者包括所述第二终端设备的传输方式、所述第一终端设备与所述第二终端设备两者之间的层配对信息。
  13. 根据权利要求10或11所述的基站,其特征在于,所述第一传输类型为基于码本传输,所述第二传输类型为基于非码本传输时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
    或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
    或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
  14. 根据权利要求10或11所述的基站,其特征在于,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号相同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息。
  15. 根据权利要求10或11所述的基站,其特征在于,所述第一传输类型为基于非码本传输,所述第二传输类型为基于非码本传输,所述第一终端设备在配对空间层上使用的参考信号,与所述第二终端设备在所述配对空间层上使用的参考信号不同时,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息、所述第一终端设备与所述第二终端设备两者之间的功率配对信息;
    或者,所述解调信息包括所述第二终端设备的天线端口、所述第二终端设备的加扰标识和所述第二终端设备的层序号;
    或者,所述解调信息包括所述第一终端设备与所述第二终端设备两者之间的层配对信息,所述第二终端设备的加扰标识。
  16. 根据权利要求11至15任一所述的基站,其特征在于,所述解调信息还包括复用模式和传输信息;所述复用模式表示所述第一终端设备的数据信号与所述第二终端设备在所述配对层上使用的参考信号的关联信息,所述传输信息包括所述第一终端设备与所述第二终端设备在配对时,所述第一终端设备所接收的信号、数据,以及所述第二终端设备所接收的信号、数据。
  17. 根据权利要求10至16任一所述的基站,其特征在于,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述解调信息携带所述第一终端设备在每个所述空间层上的调制方式和功率配对信息;
    或,当所述第一终端设备与所述第二终端设备使用相同的至少2个空间层时,所述功率配对信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的功率分配信息调度为相同后得到,所述解调信息还携带调制方式组合信息,所述调制方式组合信息为所述基站将所述第一终端设备和所述第二终端设备在所述至少2个空间层上的调制方式调度为相同后得到。
  18. 根据权利要求17所述的基站,其特征在于,所述处理模块还用于:
    当基于非码本传输的所述第二终端设备所使用的参考信号与基于码本传输的所述第一终端设备发送的数据在时域和频域上发生冲突时,对所述第一终端设备的数据进行打孔或速率匹配;
    或,当基于非码本传输的所述第一终端设备所使用的参考信号与基于码本传输的所述第二终端设备的发送的数据在时域和频域上发生冲突时,对所述第 二终端设备发送的数据进行打孔或速率匹配。
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