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WO2017167290A1 - 一种数据传输方法、网络侧设备及终端设备 - Google Patents

一种数据传输方法、网络侧设备及终端设备 Download PDF

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Publication number
WO2017167290A1
WO2017167290A1 PCT/CN2017/079074 CN2017079074W WO2017167290A1 WO 2017167290 A1 WO2017167290 A1 WO 2017167290A1 CN 2017079074 W CN2017079074 W CN 2017079074W WO 2017167290 A1 WO2017167290 A1 WO 2017167290A1
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WO
WIPO (PCT)
Prior art keywords
antenna port
network side
side device
data
antenna
Prior art date
Application number
PCT/CN2017/079074
Other languages
English (en)
French (fr)
Inventor
任海豹
王婷
邓娜
李元杰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020187030887A priority Critical patent/KR102143870B1/ko
Priority to CN201780021554.1A priority patent/CN109076526B/zh
Priority to BR112018070173A priority patent/BR112018070173A2/pt
Priority to EP17773320.1A priority patent/EP3429293B1/en
Priority to CA3019444A priority patent/CA3019444C/en
Priority to JP2018551251A priority patent/JP6736687B2/ja
Publication of WO2017167290A1 publication Critical patent/WO2017167290A1/zh
Priority to US16/148,759 priority patent/US10972171B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method, a network side device, and a terminal device.
  • MIMO technology also known as multi-antenna technology
  • LTE Long Term Evolution
  • a user-level reference signal such as a demodulation reference signal
  • a DM-RS in an existing LTE system (English: Demodulation) -Reference Signal)
  • data is also transmitted on different antenna ports, for example, one or more antenna ports such as antenna port 5, antenna port 7, and antenna port 8.
  • antenna ports for transmitting data are also called data ports.
  • the receiving end can perform channel estimation and data demodulation by using the DM-RS transmitted on the same antenna port as the data port.
  • LTE introduces a new transmission mode, Transport Mode 9, which supports eight antenna ports and supports multi-user MIMO transmission.
  • the base station needs to indicate the data corresponding to the user's physical downlink shared channel (such as PDSCH in LTE, Physical Downlink Shared Channel) in the physical downlink control channel, such as PDCCH (Physical Downlink Control Channel) in LTE.
  • PDCCH Physical Downlink Control Channel
  • the terminal device can obtain the number of layers of the received PDSCH data and the corresponding antenna port of each layer by detecting the corresponding indication field in the PDCCH, and the terminal device sends the antenna port through the antenna port.
  • the DM-RS performs channel estimation, and then performs data demodulation of the PDSCH.
  • LTE introduced the antenna port quasi-co-location in order to support multi-point coordinated transmission. It is referred to as QCL in the LTE system (English: Quasi) Co-Located) concept. Signals sent from the QCL's antenna port will pass the same large-scale fading. Large-scale fading includes delay spread, Doppler spread, Doppler shift, average channel gain, and average delay.
  • a new transmission mode that is, the transmission mode 10 is defined in the version 11, and the physical downlink shared channel resource element mapping is mainly introduced.
  • the quasi-co-location indication referred to as PQI (English: PDSCH RE Mapping and QCL Indicator) in the LTE system, is used to indicate from which base station the downlink data is sent, and the corresponding large-scale characteristics of the channel and which group of antenna ports Consistent.
  • the UE can learn the radio channel parameters corresponding to which group of antenna ports are used to demodulate the downlink data according to the PQI and the PDSCH mapping message element configured by the Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the PQI in LTE Release 11 since the PQI in LTE Release 11 only supports a set of parameters, it means that the PDSCH can only be sent from a group of QCL antenna ports, which limits the application range of the transmission mode 10, such as in a distributed MIMO system, or a multi-site coordinated transmission system.
  • a group of QCL antenna ports which limits the application range of the transmission mode 10, such as in a distributed MIMO system, or a multi-site coordinated transmission system.
  • SFN Single Frequency Network
  • multiple non-QCL antenna ports are synthesized.
  • the two antenna ports can only be virtualized into one synthesized antenna port, and then the data is transmitted to the terminal device. It is not supported for multiple MIMO transmissions such as multi-stream transmission or transmit diversity transmission for a single user in the same time domain symbol in multiple antenna ports belonging to different QCL antenna port sets.
  • the embodiments of the present invention provide a data transmission method, a network side device, and a terminal device, which are used to solve the technical problem that multiple antenna ports of the non-quasi-co-location in the prior art cannot jointly serve a single user.
  • an embodiment of the present invention provides a data transmission method, including:
  • the first network side device sends the indication information to the terminal device, where the indication information is used to indicate that the first network side device and the second network side device will jointly send data to the terminal device; the first network side device The data that needs to be transmitted by itself is mapped to all or part of the antenna ports in the first antenna port set and transmits the data that needs to be transmitted by itself mapped to the antenna port; wherein the antenna in the first antenna port set The port and the antenna port in the second antenna port set used by the second network side device are not identical.
  • the first network side device uses the first antenna port set, the second network side device uses the second antenna port set, and further the first network side device sends the terminal device to indicate the common transmission.
  • the indication information so the terminal device can correctly perform data demodulation, so the solution of the embodiment of the present invention can support the non-QCL first network side device and other network side devices to jointly perform data transmission to the terminal device.
  • the first network side device uses the first antenna port set, the second network side device uses the second antenna port set, and further the first network side device sends the first indication to the terminal device.
  • the second network side device sends the second indication information to the terminal device, where the first indication information is used to indicate antenna port information in the first antenna port set used by the first network side device, and corresponding QCL information,
  • the second indication information is used to indicate the antenna port information and the corresponding QCL information in the second antenna port set used by the second network side device, and the first indication information and the second indication information may enable the terminal device to determine the first
  • the network side device and the second network side device perform common transmission to the terminal device, and the terminal device can perform data demodulation correctly. Therefore, the solution of the embodiment of the present invention can support the non-QCL first network side device and other network side devices. Data transmission to the terminal device.
  • the method before the first network side device sends the indication information to the terminal device, the method further includes: the first network side device Transmitting an antenna port assignment result to the terminal device; wherein the antenna port assignment result is used to indicate the first antenna port set and/or the second antenna port set.
  • the method further includes: the first network side device sending, to the second network side device, notification information, where the notification information is used to notify the second network a side device, the second antenna port set or the first antenna port set used by the second network side device.
  • the first network side device sends the antenna port to the terminal device
  • the result of the distribution includes: the first network side device sends the antenna port allocation result to the terminal device by using high layer signaling.
  • the first network side device sends an antenna port allocation result to the terminal device by using high layer signaling, including The first network side device sends the antenna port allocation result to the terminal device by using a physical downlink shared channel mapping and a quasi-co-located QCL configuration information element in the high layer signaling.
  • the first network side device sends the data that needs to be sent by itself to the terminal device through the antenna port in the first antenna port set, including: the first network side device needs multiple codes of data to be jointly transmitted.
  • a partial codeword in the word is mapped onto an antenna port in the first set of antenna ports and transmits the partial codeword mapped onto an antenna port in the first set of antenna ports; or
  • the first network side device maps a path signal of the diversity transmission to an antenna port in the first antenna port set and transmits the one channel signal mapped to the antenna port.
  • the first antenna port set and the antenna port in the second antenna port set are further configured to transmit a demodulation reference signal, and transmit a demodulation reference signal for demodulating the data using a port that transmits the data.
  • an embodiment of the present invention further provides a data transmission method, including:
  • the second network side device obtains the cooperation indication; the cooperation indication is used to indicate that the second network side device and the first network side device jointly send data to the terminal device; and the second network side device acquires the previously obtained second antenna a port set; the second antenna port set includes at least one antenna port; wherein the at least one antenna port is not exactly the same as the antenna port in the first antenna port set used by the first network side device; The second network side device maps data that needs to be transmitted by itself to all or part of the antenna ports in the second antenna port set and transmits the data that needs to be transmitted by itself mapped to the antenna port.
  • the first antenna port set and the antenna port in the second antenna port set Also used to transmit a demodulation reference signal and transmit a demodulation reference signal for demodulating the data using a port that transmits the data.
  • an embodiment of the present invention further provides a data transmission method, including:
  • the device receives, by the terminal device, the indication information sent by the first network side device, where the indication information is used to indicate that the first network side device and the second network side device send data to the terminal device in the same time domain symbol;
  • the device receives the first part of data sent by the first network side device and the second part of data sent by the second network side device according to the indication information.
  • the terminal device performs channel estimation according to the first demodulation reference signal sent by the first antenna port that is sent by the first network side device by using the first network side device, and is estimated according to the channel. Demodulating the first partial data; and performing channel estimation according to the second demodulation reference signal sent by the second antenna port used by the second network side device to send the second partial data
  • the estimation result demodulates the second portion of data; wherein the first antenna port and the second antenna port are different.
  • the demodulation reference signal may be a DM-RS in an LTE system, or may be a signal of another name similar to that of the DM-RS demodulation reference function as the system evolves, the demodulation reference signal
  • the function can be referred to the background art or the description in the corresponding 3GPP standard.
  • the method further includes:
  • the antenna port allocation result includes a first antenna port set used by the first network side device and the second network side device a second set of antenna ports used; the antenna ports in the first set of antenna ports and the antenna ports in the second set of antenna ports are not identical; the first antenna port is in the first set of antenna ports All or part of the antenna port, the second antenna port is all or part of the antenna port in the second antenna port set; the terminal device determines and the first according to the correspondence between the antenna port and the demodulation reference signal The first demodulation reference signal corresponding to an antenna port and the second demodulation reference signal corresponding to the second antenna port.
  • the first antenna port set and the antenna port in the second antenna port set Also used to transmit a demodulation reference signal and transmit a demodulation reference signal for demodulating the data using a port that transmits the data.
  • transmitting the demodulation reference signal refers to receiving the demodulation reference signal.
  • an embodiment of the present invention provides a data transmission method, including:
  • the terminal device receives the first indication information sent by the first network side device and the second indication information sent by the second network side device, where the first indication information is used to indicate the first antenna port set used by the first network side device Antenna port information and its corresponding QCL information, the second indication information is used to indicate antenna port information of the second antenna port set used by the second network side device and its corresponding QCL information; the first antenna The antenna port in the set of ports and the antenna port in the second set of antenna ports are not identical; the terminal device according to the antenna port information of the first antenna port set and its corresponding QCL information and the second antenna The antenna port information of the port set and the corresponding QCL information thereof are received by the first network side device and the second network data sent by the second network side device.
  • the corresponding QCL information means that the currently used antenna port satisfies the QCL relationship with an antenna port that transmits a certain resource (or signal).
  • the terminal device can be assisted to perform channel estimation and/or signal demodulation in conjunction with the corresponding resource (or signal) in conjunction with the signal transmitted by the currently used antenna port.
  • the first indication information and the second indication information may implicitly indicate that the first network side device and the second network side device send data to the terminal device in the same time domain symbol, and the terminal device according to the antenna port information included in the first indication information.
  • the difference between the corresponding QCL information and the QCL information corresponding to the antenna port information included in the second indication information determines that the first network side device and the second network side device will send data to the terminal device in the same time domain symbol.
  • the method further includes:
  • the terminal device performs channel estimation according to the first demodulation reference signal sent by the first antenna port used by the first network side device to send the first partial data, and demodulates the first part according to the channel estimation result. And performing channel estimation according to the second demodulation reference signal sent by the second antenna port used by the second network side device to send the second partial data, and demodulating the first according to the channel estimation result.
  • Two Dividing data wherein the first antenna port and the second antenna port are different, the first antenna port is all or part of the antenna port in the first antenna port set, and the second antenna port is All or part of the antenna ports in the second set of antenna ports.
  • the method further includes:
  • an embodiment of the present invention provides a network side device, including:
  • a processor configured to obtain the indication information and map the data that needs to be sent by itself to all or part of the antenna ports in the first antenna port set; the indication information is used to indicate that the network side device and the second network side device will jointly Transmitting data to the terminal device; wherein, the antenna port in the first antenna port set and the antenna port in the second antenna port set used by the second network side device are not identical; the transmitter is used for The terminal device sends the indication information, and sends the data that needs to be sent by itself to the terminal device that is mapped to the antenna port.
  • the transmitter is further configured to: before sending the indication information to the terminal device, send an antenna port allocation result to the terminal device And wherein the antenna port allocation result is used to indicate the first antenna port set and/or the second antenna port set.
  • the transmitter is further configured to send the notification information to the second network side device,
  • the notification information is used to notify the second network side device, the second antenna port set or the first antenna port set used by the second network side device.
  • the transmitter is configured to use high layer signaling
  • the terminal device sends the antenna port allocation result.
  • the transmitter is configured to use the physical downlink shared channel mapping and the quasi-co-located QCL configuration information in the high layer signaling
  • the element transmits the antenna port assignment result to the terminal device.
  • the processing Means for mapping a partial codeword of a plurality of codewords of data that need to be jointly transmitted onto an antenna port in the first set of antenna ports and transmitting the mapping to the first set of antenna ports by the transmitter The partial codeword on the antenna port; or mapping a signal of the diversity transmission onto an antenna port in the first set of antenna ports and transmitting, by the transmitter, the mapping mapped to the antenna port All the way.
  • An antenna port set and an antenna port in the second antenna port set are further configured to transmit a demodulation reference signal, and transmit a demodulation reference signal for demodulating the data using a port that transmits the data.
  • the notification information includes an antenna port index entry, where the size of the antenna port index entry is N bits, where the ith bit is 0, indicating the second network side device or The i-th antenna port of the antenna port supported by the first network-side device is not configured, and the ith bit is 1 indicates that the second network-side device or the antenna port supported by the first network-side device is the i-th
  • the antenna ports are configured, and the value of i is between 0 and N-1. Number, N is a positive integer.
  • the indication information includes a physical downlink shared channel resource element mapping and a quasi co-location indication PQI, where the domain value of the PQI is represented by a bit having a number of bits greater than 2.
  • an embodiment of the present invention provides a network side device, including:
  • a receiver configured to receive the cooperation indication, where the network side device and the first network side device jointly send data to the terminal device, and a processor, configured to map data that needs to be sent by itself to the second antenna All or part of the antenna ports in the set of ports;
  • the second set of antenna ports includes at least one antenna port; wherein the at least one antenna port and the antenna port in the first set of antenna ports used by the first network side device Not identical;
  • the transmitter is configured to send, to the terminal device, the data that needs to be sent by itself to be mapped to the antenna port.
  • the processor is configured to receive, by the receiver, a second antenna port set from the first network side device.
  • the first antenna port set and the antenna port in the second antenna port set Also used to transmit a demodulation reference signal and transmit a demodulation reference signal for demodulating the data using a port transmitting the data.
  • a seventh aspect of the present invention provides a terminal device, including:
  • a receiver configured to receive the indication information sent by the first network side device, where the indication information is used to indicate that the first network side device and the second network side device will jointly send data to the terminal device; and receive the a first part of data sent by the first network side device and a second part of data sent by the second network side device; and a processor, configured to receive the first part of data and the second part of data according to the indication information.
  • the processor is further configured to use, according to the first antenna, the first antenna used by the first network side device to send the first partial data
  • the first demodulation reference signal sent by the port performs channel estimation and demodulates the first partial data according to the channel estimation result; and, according to the second obtained by the second network side device, the second part used by the second network side device
  • the second demodulation reference signal sent by the antenna port performs channel estimation and demodulates the second partial data according to the channel estimation result; wherein the first antenna port and the second antenna port are different.
  • the receiver is further configured to receive an antenna port that is sent by the first network side device a result of the allocation;
  • the port allocation result includes a first antenna port set used by the first network side device and a second antenna port set used by the second network side device;
  • the antenna port and the antenna port in the second antenna port set are not identical;
  • the first antenna port is all or part of the antenna port in the first antenna port set, and the second antenna port is the And all or part of the antenna ports in the set of two antenna ports;
  • the processor is configured to determine, according to the correspondence between the antenna port and the demodulation reference signal, the first demodulation reference signal corresponding to the first antenna port The second demodulation reference signal corresponding to the second antenna port.
  • the indication information includes a physical downlink The shared channel resource element mapping and the quasi co-location indication PQI, the domain value of the PQI is represented by a bit having a bit number greater than two.
  • the eighth aspect of the present invention provides a terminal device, including:
  • a receiver configured to receive first indication information sent by the first network side device, and second indication information sent by the second network side device, where the first indication information is used to indicate the first used by the first network side device Antenna port set Antenna port information and its corresponding QCL information, the second indication information is used to indicate antenna port information of the second antenna port set used by the second network side device and its corresponding QCL information; the first antenna port The antenna ports in the set and the antenna ports in the second antenna port set are not identical;
  • a processor configured to receive the first network side device according to the antenna port information of the first antenna port set and its corresponding QCL information and antenna port information of the second antenna port set and its corresponding QCL information The first part of data sent and the second part of data sent by the second network side device.
  • the processor is further configured to use, according to the first antenna, the first antenna used by the first network side device to send the first partial data
  • the first demodulation reference signal sent by the port performs channel estimation and demodulates the first partial data according to the channel estimation result; and, according to the second obtained by the second network side device, the second part used by the second network side device
  • the second demodulation reference signal sent by the antenna port performs channel estimation and demodulates the second partial data according to the channel estimation result; wherein the first antenna port and the second antenna port are different, the first antenna The port is all or part of the antenna ports in the first set of antenna ports, and the second antenna port is all or part of the antenna ports in the second set of antenna ports.
  • the processor is further configured to perform a correspondence between the antenna port and the demodulation reference signal. Determining, by the first antenna port, the first demodulation reference information and a second demodulation reference signal corresponding to the second antenna port.
  • an embodiment of the present invention provides a data transmission apparatus, where the data transmission apparatus includes a functional module for implementing the method described in the first aspect.
  • an embodiment of the present invention further provides a data transmission apparatus, where the data transmission apparatus includes a functional module for implementing the method of the second aspect.
  • an embodiment of the present invention further provides a data transmission apparatus, where the data transmission apparatus includes a functional module for implementing the method described in the third aspect.
  • the embodiment of the present invention further provides a data transmission apparatus, where the data transmission apparatus includes a functional module for implementing the method described in the fourth aspect.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores program code, where the program code includes the first aspect, the second aspect, the third aspect, or An instruction of any possible implementation of the method of the fourth aspect.
  • the data is sent to the terminal device, including: the first network side device and the second network side device send data to the terminal device on the same time domain symbol; or the first network side device and The second network side device transmits data to the terminal device on different time domain symbols.
  • the first network side device and the second network side device send data to the terminal device on the same time domain symbol, including but not limited to a multi-point multi-stream cooperative transmission or a multi-point diversity cooperative transmission.
  • FIG. 1a-1b are structural diagrams of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a structural diagram of an apparatus according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a data transmission method on a device side of a first network side according to an embodiment of the present invention.
  • the embodiments of the present invention provide a data transmission method, a network side device, and a terminal device, which are used to solve the technical problem that multiple antenna ports that are not quasi-co-located in the prior art cannot jointly serve a single user.
  • FIG. 1a and FIG. 1b are structural diagrams of a possible communication network system according to an embodiment of the present invention.
  • the communication network system includes a first network side device, a second network side device, and a terminal device.
  • the first network side device is a service network side device of the terminal device, and the service side network device means that the terminal device is provided with an RRC connection and a non-access stratum (English: non-access stratum, referred to as NAS) mobility through a wireless air interface protocol.
  • Network-side devices for services such as management and security input.
  • the first network side device and the terminal device can communicate through an air interface protocol.
  • the number of the second network side devices may be one or more, and the first network side device is a network side device that meets different QCLs. Generally, the second network side device and the first network side device are located at different geographical locations. . Generally, the second network side device is a neighbor network side device of the first network side device. The second network side device can also perform data transmission through the air interface protocol. The second network side device is configured to assist the first network side device to perform data transmission to the terminal device, for example, multi-stream transmission or diversity transmission, so the second network side device may also be referred to as a cooperative network side device. Communication between the first network side device and the second network side device may also be performed, for example, by transmitting control messages and/or indicating information.
  • the first network side device may also be a cooperative network side device, and the second network side device is a serving network side device.
  • the first network side device and the second network side device may be different transmission points of the same device, for example, two remote radio units (English: Radio Unit, abbreviated as RU) or radio frequency heads. :Radio Head (RH), or two completely independent network side devices, such as two base stations.
  • two remote radio units English: Radio Unit, abbreviated as RU
  • RH Radio Head
  • two completely independent network side devices such as two base stations.
  • the first network side device and the second network side device simultaneously transmitting data to the terminal device include two meanings.
  • the first layer means that the first network side device and the second network side device send data to the terminal device on the same time domain symbol.
  • the second layer means that the first network side device and the second network side device send data to the terminal device on different time domain symbols.
  • CoMP Coordinated Multiple Points
  • a joint virtualization method is an SFN technology, that is, a first antenna port in an antenna set of a first network side device and a second antenna port in an antenna set of a second network side device are combined into one antenna port, from which an antenna port is synthesized.
  • the data transmitted in the first antenna and the second antenna transmit the same modulation symbol in the same time-frequency resource.
  • the first antenna port set used by the first network side device in the solution of the embodiment is not completely the same as the antenna port in the second antenna port set used by the second network side device.
  • the first set of antenna ports belongs to one QCL set
  • the second set of antenna ports belongs to another QCL set, which are non-QCL.
  • data can be sent to the terminal device on the same time domain symbol through two non-QCL antenna ports.
  • antenna port allocation is performed in advance, and the first network side device First day of use
  • the set of line ports is not exactly the same as the set of antennas in the second set of antenna ports used by the second network side device.
  • the first network side device and the second network side device simultaneously access the centralized scheduler.
  • the first network side device and the second network side device may not directly communicate with each other, and the foregoing control message and/or the indication information are all sent by the centralized scheduler to the first network side device and the second network side device.
  • the centralized scheduler may be a separate physical device, or may be a functional module integrated on the first network side device, or a functional module integrated on other devices, which is not limited herein.
  • the communication system may further include a neighboring network side device and a terminal device that transmit services on the same time-frequency resource except the two network side devices, and each network side device may include other numbers of terminals in the coverage of the network side device. device.
  • the communication system in which the network side device and the terminal device are located in FIG. 1a and FIG. 1b may further include other network entities, such as a network controller and/or a mobility management entity, which are not limited in the embodiment of the present invention.
  • the network side equipment mentioned in this paper may be a base station in Global Mobile Communication (English: Global System of Mobile communication; GSM for short) or Code Division Multiple Access (CDMA: CDMA).
  • Base Transceiver Station; referred to as BTS it can also be a base station (English: NodeB; NB for short) in Wideband Code Division Multiple Access (WCDMA), or it can be long-term evolution.
  • Long Term Evolution; LTE Evolved Base Station (English: Evolutional Node B; eNB or eNodeB for short), or a relay station or an access point, or a base station in a future 5G network, etc., which is not limited herein.
  • the terminal device mentioned herein may be a wireless terminal device or a wired terminal device, and the wireless terminal device may be a device that provides voice and/or other service data connectivity to the user, a handheld device with wireless connection function, or Connect to other processing devices of the wireless modem.
  • the wireless terminal device can communicate with one or more core networks via a radio access network (English: Radio Access Network; RAN), and the wireless terminal device can be a mobile terminal, such as a mobile phone (or "cellular" phone).
  • a computer having a mobile terminal for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network.
  • the wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, or a remote terminal. Access Terminal, User Terminal, User Agent, User Device or User Equipment.
  • FIG. 2 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
  • the device is, for example, a possible structural diagram of the first network side device, the second network side device, and the terminal device.
  • the The apparatus includes a processor 10, a transmitter 20, a receiver 30, a memory 40, and an antenna 50.
  • the memory 40, the transmitter 20 and the receiver 30 and the processor 10 can be connected via a bus.
  • the memory 40, the transmitter 20, and the receiver 30 and the processor 10 may not be a bus structure, but may be other structures, such as a star structure, which is not specifically limited herein.
  • the processor 10 may be a general-purpose central processing unit or an application specific integrated circuit (ASIC), and may be one or more integrated circuits for controlling program execution, and may be A hardware circuit developed using a Field Programmable Gate Array (FPGA) can be a baseband processor.
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • processor 10 may include at least one processing core.
  • the memory 40 may include one or more of a read only memory (English: Read Only Memory, ROM for short), a random access memory (English: Random Access Memory, RAM), and a disk storage.
  • Memory 40 is used to store data and/or instructions needed by processor 10 to operate.
  • the number of memories 40 may be one or more.
  • each antenna port can send a demodulation reference signal (English: Demodulation Reference Signal, DM-RS for short), and is used by the terminal device to perform channel estimation and PDSCH data demodulation of the PDSCH.
  • DM-RS Demodulation Reference Signal
  • LTE supports 8 antenna ports. These 8 antenna ports can be divided into two groups. Ports ⁇ 7, 8, 11, and 13 ⁇ are one group, and ports ⁇ 9, 10, 12, and 14 ⁇ are another. A group. The two sets of antenna ports are distinguished by frequency division, and four antenna ports in each group are distinguished by code points.
  • the transmitter 20 and the receiver 30 may be physically independent of each other or integrated.
  • Transmitter 20 can transmit data via antenna 50.
  • Receiver 30 can receive data via antenna 50.
  • FIG. 3 is a flowchart of a data transmission method on the first network side device side in the embodiment of the present invention. As shown in FIG. 3, the method includes:
  • Step 101 The first network side device and/or the second network side device send the indication information to the terminal device, where the indication information is used to indicate that the first network side device and the second network side device will jointly send data to the terminal device.
  • Step 102 The first network side device maps data that needs to be sent by itself to all or part of the antenna ports in the first antenna port set, and sends the data that needs to be sent by itself to the terminal device mapped to the antenna port;
  • the antenna port in the first antenna port set and the second antenna port set in the second network side device are not identical.
  • the method further includes: the first network side device sending an antenna port allocation result to the terminal device; wherein the port allocation result is used to indicate the first antenna port set and/or The second antenna port set.
  • the second network side device further sends an allocation result for indicating the second antenna port set to the terminal device, if the first network side device sends only the allocation result indicating the first antenna port set to the terminal device.
  • the acquisition manner of the antenna port allocation result may be the following four types, but is not limited to the following four types.
  • the first network side device itself configures the first antenna port set used by itself and the second antenna port set used by the second network side device. This approach is applicable to the communication system shown in Figure 1a.
  • the first network side device as the serving base station of the terminal device, allocates an antenna port set for itself and allocates an antenna for the second network side device when determining that the second network side device needs to jointly transmit data to the terminal device. port.
  • the result of the allocation is, for example, that the first antenna port set is ⁇ 7, 8, 11, 13 ⁇ and the second antenna port set is ⁇ 9, 10, 12, 14 ⁇ .
  • the first antenna port set and the second antenna port set are respectively configured by the centralized scheduler for the first network side device and the second network side device. This approach is applicable to the communication system as described in Figure 1b.
  • the antenna port set is configured for the serving base station and the cooperative base station, and then the communication protocol between the centralized scheduler and the base station can be adopted. Notifying the serving base station and the cooperative base station of the port configuration result.
  • the first set of antenna ports and the second set of antenna ports are pre-configured. This scheme is applicable to the communication system shown in Figures 1a and 1b.
  • the pre-configured antenna port set is ⁇ 7, 8, 11, 13 ⁇
  • the pre-configured antenna port set is ⁇ 9, 10, 12, 14 ⁇ .
  • the indication information may be sent to the serving base station and the coordinated base station, and when receiving the indication information, the serving base station may use the pre-configured antenna port set as an antenna.
  • the port assignment result, and the cooperative base station can also know the set of antenna ports that jointly transmit data.
  • the first network side device may further send the indication information to the second network side device, where the second network side device sends the data to the terminal device, and then the second network side The device can then transmit data to the terminal device using the ports in the pre-configured second set of antenna ports.
  • the first antenna port set may be pre-configured, may be determined by the first network side device, or may be allocated by the centralized scheduler. Then, the first network side device sends the notification information to the second network side device, where the notification information is used to notify the second network side device, the first antenna port set used by the first network side device. The second network side device may determine the antenna port set used by itself according to the first antenna port set used by the first network side device.
  • the notification information includes an antenna port index entry, where the size of the antenna port index entry is N bits, where the ith bit is 0, indicating that the i-th antenna port of the antenna port supported by the first network side device does not It is configured that 1 means that the i-th antenna port of the antenna port supported by the first network side device is configured, i takes an integer between 0 and N-1, and N is a positive integer.
  • the second network side device can determine which antenna ports of the first network side device are configured by parsing the antenna port index entry, and then determining which antenna ports to use according to the port index entries.
  • the value of N can be 8, that is, the 0-7th bit is included, and when the 0th bit is 0, the first network is represented.
  • the 0th antenna port supported by the side device, that is, the port 7 is not configured.
  • the antenna ports supported by each network side device are arranged according to a fixed rule. If the antenna port number is used for sorting, the first antenna port is, for example, the antenna port with the smallest antenna port number.
  • the port number can also be associated with the port number.
  • the i-th bit when the i-th bit is 0, it can indicate that port i+7 is not configured, and continues to use LTE as an example, assuming that the 0th bit is 0. Indicates that port 7 is not configured. The results obtained in the two ways are the same.
  • the physical meaning of 7 in i+7 is the starting port number of the antenna port.
  • the result of the allocation is that the antenna ports in the first antenna port set and the second antenna port set are incomplete. the same.
  • the ports in the two sets are not identical.
  • the action of port assignment may be performed once before each data is sent, or it may be The pre-channel condition is performed once when it satisfies the common transmission. After the allocation is completed, it can be continuously used until the channel condition does not satisfy the common transmission, and then executed again when the next channel condition satisfies the common transmission.
  • the set of antenna ports allocated last time may be the same or different.
  • antenna ports specifically used during adjacent two allocations may be allocated or indicated using a downlink physical control channel as described in the background.
  • the downlink physical control channel may be a PDCCH channel in an LTE system, or may be a channel of another name that implements a downlink physical control function as the system evolves.
  • the second network side device is a neighbor network side device of the first network side device.
  • the first network side device is a serving base station
  • the second network side device is a neighbor base station of the serving base station.
  • the method further includes: the first network side device sending the notification information to the second network side device, where the notification information is used to notify the second network side device, the second network side device The second set of antenna ports used.
  • the notification information includes an antenna port index entry, where the size of the antenna port index entry is N bits, where the ith bit is 0, indicating the i-th antenna in the antenna port supported by the second network side device.
  • the port is not configured.
  • the value of 1 indicates that the i-th antenna port of the antenna port supported by the second network-side device is configured.
  • the value of i is an integer between 0 and N-1, and N is a positive integer.
  • the second network side device can know which antenna ports of its own are configured by parsing the antenna port index entries, and the set formed by the configured ports is the second antenna port set.
  • the notification information may be a single message, or may be a message formed by adding an antenna port index entry in an existing message.
  • an inter-cell CoMP transmission information is sent between multiple base stations through an X2 interface, so an antenna port index entry can be added to the CoMP information.
  • the added antenna port index entries are shown in Table 1.
  • O indicates that the information element (English: Information Element, IE for short) is optional, and the scrambling ID of the demodulation reference signal is an initialization parameter when generating the demodulation reference signal sequence.
  • the first network side device may send the antenna port allocation result to the terminal device.
  • the allocation result includes a first antenna port set used by the first network side device and a second antenna port set used by the second network side device.
  • the first network side device may send the antenna port allocation result to the terminal device by using high layer signaling.
  • the first network side device may notify the terminal device of the port allocation result by using the high layer signaling different from the prior art, and may also reuse the high layer signaling in the prior art, such as radio resource control.
  • Radio Resource Control RRC
  • MAC Media Access Control Control Element
  • the serving base station sends a QCL parameter to the terminal device through an RRC message.
  • the QCL parameter is carried in the PDSCH mapping and the QCL configuration information element
  • the PDSCH configuration information element is the PDSCH mapping and The upper level information element of the QCL configuration information element.
  • the PDSCH configuration information elements are as follows:
  • the PDSCH mapping and the QCL configuration information element are the PDSCH-RE-MappingQCL-Config-r11, and the information element carries the PDSCH resource mapping information (such as a cell-specific reference signal (CRS) port information). , CRS frequency offset information, mbsfn subframe configuration information, one or more of PDSCH start location information) and QCL configuration information (such as non-zero power channel state information reference signal (English: Channel-State Information Reference Signal, Abbreviation: CSI-RS) One or more of the configuration information).
  • CRS cell-specific reference signal
  • QCL configuration information such as non-zero power channel state information reference signal (English: Channel-State Information Reference Signal, Abbreviation: CSI-RS)
  • CSI-RS Channel-State Information Reference Signal
  • an antenna port assignment field may be added to the PDSCH mapping and QCL configuration information elements.
  • the format of the port assignment field is, for example:
  • the demodulation reference signal -PortIndex indicates that the antenna port information of the group of QCL parameters is composed of eight bits, and the i-th bit is 0, indicating that port 7+i does not exist, and the i-th bit is 1, indicating port 7 +i exists.
  • scramblingIdentity represents the scrambling ID, which is an integer between 0 and 503. Since the PDSCH configuration information element of the PDSCH mapping and the QCL configuration information element, the PDSCH configuration information element includes the DMRS-Config-r11 (the italicized part of the above code) field, the domain also contains the scrambling ID, ie scramblingIdentity, for compatibility. In the existing PDSCH cell configuration in the protocol, the newly added antenna port allocation field in the PDSCH mapping and the QCL configuration cell may be valid only in the transmission mode 10 or the newly defined transmission mode, and the newly defined transmission mode is the implementation. The corresponding transmission mode.
  • another high-level information in the embodiment sends the antenna port allocation result to the terminal device, where the antenna port allocation field is added in the PDSCH configuration information element.
  • the format of the antenna port allocation field is not limited, and includes an antenna port set number and/or antenna port information corresponding to each antenna port set. Different antenna port set numbers correspond to different antenna port sets.
  • the antenna port information included in the antenna port set may be implicitly obtained by using an antenna port set number according to a mapping relationship between the fixed antenna port set and the antenna port.
  • the first network side device notifies the terminal device of the first antenna port set and the second antenna port set, so that the terminal device passes the first antenna when receiving the data respectively sent by the first network side device and the second network side device Demodulation reference signals corresponding to the ports in the port set demodulate data sent by the first network side device, and pass the second antenna port set
  • the demodulation reference signal corresponding to the port in the combination demodulates the data sent by the second network side device.
  • the first antenna port set and/or the second antenna port set may be specified in the protocol (that is, the network side device and the terminal device are each pre-configured). In this case, the first network side device may not send the port allocation result that has been specified by the corresponding protocol to the terminal device.
  • the first network side device may perform step 101, that is, send the terminal device
  • the indication information is used to indicate that the first network side device and the second network side device will jointly send data to the terminal device.
  • the terminal device can learn that the first network side device and the second network side device jointly send data to itself, and then receive the first network side device and the second network side.
  • the terminal device may perform data demodulation by using a demodulation reference signal corresponding to the port in the port set corresponding to the first network side device and the second network side device.
  • the first network side device and/or the second network side device send the indication information to the terminal device by using physical layer signaling.
  • the first network side device and/or the second network side device may send the indication information to the terminal device by using separate signaling or a message, or may extend the signaling or the message in the prior art.
  • the indication information may be sent by using a downlink physical control channel, which may be a PDCCH in an LTE system, or a channel of another name that implements a corresponding downlink physical control function in a future network, and the specific function and evolution may be Refer to the description in the corresponding standard.
  • any combination of two bits of the PQI domain corresponds to a set of QCL parameter configuration and PDSCH resource mapping configuration, and each group of QCL parameters and PDSCH resource mapping configuration is configured by PDSCH mapping and QCL configuration information elements in RRC signaling. of.
  • the domain value of the PQI is only two bits, so only one group of QCL parameters can be indicated in a single time, so there is only one network side device at a time, such as the first network side device or the second network side device.
  • the terminal device transmits data.
  • the domain value of the PQI in the prior art is expanded to more bits, so that the system supports simultaneously indicating more than one set of QCL parameters.
  • Table 3 gives a table of meanings indicated when the field value of PQI is expanded to 4 bits. It should be noted that Table 3 is only for indication. In actual application, table design can be performed according to requirements.
  • the domain value of the PQI is filled with a corresponding bit value, such as 0100.
  • a set of QCL parameters corresponds to a network side device, and when the terminal device parses the domain value of the PQI, the QCL parameter group 1 and the QCL parameter group 2 can be known, that is, the network side device corresponding to the QCL parameter group 1 is obtained.
  • the network side devices corresponding to the QCL parameter group 2 will jointly transmit data to themselves.
  • the terminal device can know the QCL parameter group 1, the QCL parameter group 2, and the QCL parameter group 3 when the PQI field value is parsed, that is, the QCL parameter group 1 is known.
  • the network side device, the network side device corresponding to the QCL parameter group 2, and the network side device corresponding to the QCL parameter group 3 will jointly transmit data to itself.
  • the terminal device may determine, by using the cell configuration information included in the QCL parameter group, whether each parameter group corresponds to the first network side device or the second network side device.
  • the terminal device can know that the QCL parameter group 1 corresponds to the first A network side device.
  • the QCL parameter group 2-4 (if any) corresponds to the configuration of other cells, so it can be known that the QCL parameter group 2-4 corresponds to the second network side device.
  • the solution in this embodiment is also compatible with the scheme in which the PQI indicates a set of QCL parameters, that is, in the solution in this embodiment, the data may be separately transmitted by the first network side device to the terminal device.
  • the second network side device may separately transmit data to the terminal device, or the first network side device and the second network side device may jointly transmit data to the terminal device, as long as the first network side device passes different PQIs.
  • the field value can be indicated.
  • the first network side device and the second network side device may send the indication information to the terminal device, where the indication information may implicitly indicate that the first network side device and the second network side device will jointly work with the terminal device.
  • send data may be sent by using a downlink physical control channel, which may be a PDCCH in an LTE system, or a channel of another name that implements a corresponding downlink physical control function in a future network, and the specific function and evolution may be Refer to the description in the corresponding standard.
  • the indication message includes a transmitting antenna end of the network side device.
  • the QCL information of the port (for example, the PQI field in the physical layer control message in the existing standard), when the terminal device receives n such signaling or messages, n is an integer greater than or equal to 2, and is included in different signaling or messages. If the QCL information of the antenna port is different, it can be implicitly learned that there are currently n network side devices collectively transmitting data to the terminal device. It should be noted that, before the first network side device sends the first indication information to the terminal device, and the second network side device sends the second indication information to the terminal device, the first network device may send configuration information to the terminal device, indicating the terminal device. And receiving indication information of n pieces of QCL information including a transmitting antenna port of the network side device (for example, a PQI field in a physical layer control message in an existing standard).
  • the first network side device sends the first indication information to the terminal device
  • the second network side device sends the second indication information to the terminal device
  • the first indication information is used to indicate the first used by the first network side device.
  • the indication information may also correspond to the indication information sent to the terminal device in step 101.
  • the first network device may send configuration information to the terminal device, indicating the terminal device. Receiving more than one of the indication information for indicating antenna port information in the antenna port set used by the network side device and the corresponding QCL information.
  • the first network side device may further send indication information to the second network side device to indicate that the second network side device performs common transmission.
  • the first network side device may not transmit such indication information to the second network side device because direct indication can be made by the centralized scheduler.
  • the first network side device performs step 102, that is, the data that needs to be transmitted by itself in the data that needs to be jointly transmitted is sent to the terminal device through the antenna port (determined in whole or in part, for example, according to the transmitted data) in the first antenna port set. .
  • the processing flow of the downlink physical shared channel includes: independent scrambling, modulation, layer mapping, precoding, resource element RE mapping, and orthogonal frequency division multiplexing for each codeword (English: Orthogonal Frequency Multiple, Abbreviation: OFDM) symbol generation.
  • a plurality of non-quasi-co-located network side devices may jointly send data to a single terminal device, and signals corresponding to signals from non-QCL network side devices are different.
  • the first network side device has already The antenna port assignment result is sent to the terminal device.
  • the layer mapping part (including the port mapping) needs to be modified accordingly.
  • the first network side device maps part of the plurality of code words of the data that need to be jointly transmitted to the antenna port in the first antenna port set, and transmits the mapping to the The partial codeword on an antenna port in a set of antenna ports. For example, if the PQI indicates two sets of QCL parameters, the first antenna port set is ⁇ 7, 8 ⁇ , and the second antenna port set is ⁇ 9, 10 ⁇ , then the first network side device maps the codeword 0 to the port 7. Or on 8, and transmit codeword 0 mapped to port 7 or 8, and codeword 1 maps to port 9 or 10 in the second set of antenna ports, and maps the codeword to port 9 or 10. 1 send it out.
  • the first network side device maps one signal of the diversity transmission to the antenna port in the first antenna port set and transmits the one signal mapped to the antenna port.
  • the serving base station and the cooperative base station jointly perform Space Frequency Block Coding (SFF) transmission, and the serving base station uses the first antenna end configured by the serving base station QCL parameter.
  • One port in the port set (such as port 7) sends a signal of SFBC, and the cooperative base station transmits another signal of the SFBC using one of the second antenna port sets configured by the cooperative base station QCL parameter (such as port 9).
  • the first network side device and the second network side device need to send, which may be agreed by the protocol, for example, the first network side device sends the codeword 0, and the second network side device sends the code. Word 1, or the opposite.
  • the data transmitted by the first network side device and the second network side device in the same time domain symbol may be the same codeword, or may be independent different codewords.
  • ports in the antenna port set are used for port mapping, it may also be sent according to the convention, for example, according to the order of the ports in the port set, the first layer is selected, and the first two are selected. port.
  • the first network side device and/or the second network side device may notify the terminal device of the port number of the codeword mapping.
  • the specific notification method is not limited in the embodiment of the present invention.
  • the antenna port set information and/or the antenna port number information used when the first network side device and the second network side device perform data transmission may be notified by the physical layer message or the MAC CE or the like, and the expanded The antenna port information indicated by the PQI, the terminal device can obtain the antenna port information used by the first network side device and the second network side device during the current transmission, and the corresponding QCL information.
  • the notification message displayed by the physical layer message or the MAC CE may be sent by the first network side device and/or the second network side device to the terminal device.
  • the antenna port set information and/or the antenna port information used when the first network side device and the second network side device of the terminal device perform data transmission may be notified by a physical layer message or a MAC CE or the like, wherein the antenna port used is used.
  • the information may be implicitly obtained through the indicated layer information and the layer-to-port mapping relationship, or may be indicated by the indicated antenna port information.
  • Each of the antenna port set information and/or the used antenna port information is then respectively indicated with its corresponding QCL information, which may be the same as the PQI information field in the current LTE.
  • the notification message of the physical layer message or the MAC CE may be sent by the first network side device and/or the second network side device to the terminal device.
  • the data transmission method performed includes the following steps: the second network side device obtains a cooperation indication; the cooperation indication is used to indicate that the second network side device sends the same time domain symbol to the terminal device Data; the second network side device acquires a pre-obtained second antenna port set; the second antenna port set includes at least one antenna port; and the second network side device maps data that needs to be transmitted by itself to the second antenna port set The antenna port transmits the data that needs to be transmitted by itself to the antenna port.
  • the second network side device obtains the cooperation indication, which may be sent by the first network side device, or may be directly indicated by the centralized scheduler.
  • the indication by the centralized scheduler the indication by the first network side device, the pre-configuration, or the pre-configuration. It is determined by itself according to the first antenna port.
  • the manner in which the second network side device specifically sends data is the same as that of the first network side device, and has been described in detail above, and therefore is not described herein again.
  • the data transmission method includes the following steps: the terminal device receives the indication information sent by the first network side device and/or the second network side device; the indication information is used to indicate the first network side device and the second The network side device sends data to the terminal device in the same time domain symbol; the terminal device receives the first part of data sent by the first network side device and the second part of data sent by the second network side device according to the indication information.
  • the terminal device further performs channel estimation according to the first demodulation reference signal sent by the first antenna port that is used by the first network side device to send the first part of the data, and demodulates the first part of the data according to the channel estimation result; And performing channel estimation according to the second demodulation reference signal sent by the second antenna port used by the second network side device that is sent by the second network side device, and demodulating the second part of the data according to the channel estimation result.
  • the first antenna port and the second antenna port are different.
  • the first partial data and the second partial data may be independent independent code words.
  • the independent codeword corresponds to an independent modulation and coding scheme (English: Modulation and Coding Scheme, referred to as MCS).
  • MCS Modulation and Coding Scheme
  • the first antenna port and the second antenna port are obtained in advance, and may be respectively notified by the first network side device and the second network side device, or the terminal device may receive the antenna port assignment sent by the first network side device.
  • the port assignment result includes a first antenna port set used by the first network side device and a second antenna port set used by the second network side device; the terminal device can learn that the first antenna port is the first rule according to a convention. Which port in the set of reference signal sets is demodulated, and which of the second set of antenna ports is the second antenna port.
  • the terminal device determines, according to the correspondence between the antenna port and the demodulation reference signal, the first demodulation reference signal corresponding to the first antenna port and the second demodulation corresponding to the second antenna port Reference signal.
  • Channel estimation based on the demodulation reference signal and data demodulation based on the channel estimation result are well known to those skilled in the art, and therefore will not be described herein.
  • the first network side device uses the first antenna port set
  • the second network side device uses the second antenna port set
  • the device and/or the second network side device send the indication information for indicating the common transmission, so the terminal device can correctly perform data demodulation, so the solution of the embodiment of the present invention can support the first network side device and the second non-QCL.
  • the network side devices collectively perform data transmission to the terminal device.
  • the embodiment of the present invention further provides a data transmission method, which includes the following steps:
  • the terminal device receives the first indication information sent by the first network side device and the second indication information sent by the second network side device, where the first indication information is used to indicate the first antenna port set used by the first network side device Antenna port information and its corresponding QCL information, the second indication information is used to indicate antenna port information of the second antenna port set used by the second network side device and its corresponding QCL information; the first antenna The antenna port in the set of ports and the antenna port in the second set of antenna ports are not identical; the terminal device according to the antenna port information of the first antenna port set and its corresponding QCL information and the second antenna The antenna port information of the port set and the corresponding QCL information thereof are received by the first network side device and the second network data sent by the second network side device.
  • the first indication information and the second indication information have been described in the foregoing, and therefore are not described herein again.
  • the terminal device performs channel estimation according to the first demodulation reference signal sent by the first antenna port used by the first network side device to send the first part of data, and demodulates according to the channel estimation result.
  • the first partial data and, according to the second demodulation reference signal sent by the second antenna port used by the second network side device to send the second partial data, the channel estimation is performed according to the channel estimation result.
  • Adjusting the second part of data wherein the first antenna port and the second antenna port are different, and the first antenna port is all or part of antenna ports in the first antenna port set, and the The second antenna port is the second antenna port All or part of the antenna port in the collection.
  • the terminal device determines, according to the correspondence between the antenna port and the demodulation reference signal, the first demodulation reference information corresponding to the first antenna port and the second corresponding to the second antenna port Demodulate the reference signal.
  • Channel estimation based on the demodulation reference signal and data demodulation based on the channel estimation result are well known to those skilled in the art, and therefore will not be described herein.
  • an embodiment of the present invention further provides a device (shown in FIG. 2) for implementing any one of the foregoing methods.
  • the processor 10 is configured to obtain indication information and map data that needs to be transmitted by itself to an antenna port in the first antenna port set; Instructing the network side device and the second network side device to jointly send data to the terminal device; the transmitter 20 is configured to send the indication information to the terminal device, and the need to map to the antenna port The data sent by itself is sent to the terminal device; the antenna port in the first antenna port set and the second antenna port set used in the second network side device are not completely identical.
  • the transmitter 20 is further configured to send an antenna port allocation result to the terminal device before sending the indication information to the terminal device, where the antenna port allocation result is used to indicate the first antenna port set and/or the second antenna port set. .
  • the transmitter 20 is further configured to send, to the second network side device, notification information, where the notification information is used to notify the second network side device, where the second network side device uses the A set of two antenna ports or a set of the first antenna ports.
  • the notification information includes an antenna port index entry, where the size of the antenna port index entry is N bits, where the ith bit is 0, indicating that the second network side device or the network side device supports The i-th antenna port of the antenna port is not configured, and the i-th bit is 1 to indicate that the i-th antenna port of the antenna port supported by the second network-side device or the network-side device is configured, and the value of i is An integer between 0 and N-1, where N is a positive integer.
  • the transmitter 20 is configured to send the antenna port allocation result to the terminal device by using high layer signaling.
  • the transmitter 20 is configured to send the antenna port allocation result to the terminal device by using a physical downlink shared channel mapping and a quasi-co-located QCL configuration information element in the high layer signaling.
  • the indication information includes a physical downlink shared channel resource element mapping and a quasi co-location indication PQI, where the domain value of the PQI is represented by a bit having a number of bits greater than 2.
  • the processor 10 is configured to map a part of the plurality of code words of the data that need to be jointly transmitted to the antenna port in the first antenna port set, and send the mapping to the Generating the partial codeword on the antenna port in the first antenna port set; or mapping a signal of the diversity transmission to an antenna port in the first antenna port set and transmitting the mapping to the antenna through the transmitter 20.
  • the one signal on the port is configured to map a part of the plurality of code words of the data that need to be jointly transmitted to the antenna port in the first antenna port set, and send the mapping to the Generating the partial codeword on the antenna port in the first antenna port set; or mapping a signal of the diversity transmission to an antenna port in the first antenna port set and transmitting the mapping to the antenna through the transmitter 20.
  • the one signal on the port is configured to map a part of the plurality of code words of the data that need to be jointly transmitted to the antenna port in the first antenna port set, and send the mapping to the Generating the partial codeword on the antenna port in the first antenna
  • the first antenna port set and the antenna port in the second antenna port set are further configured to transmit a demodulation reference signal, and use the port that sends the data to transmit a demodulation reference signal for demodulating the data. .
  • the receiver 30 is configured to receive a cooperation indication; the cooperation indication is used to indicate that the network side device is common to the first network side device Transmitting data to the terminal device; the processor 10, configured to map data that needs to be transmitted by itself to an antenna port in the second antenna port set; the second antenna port set includes at least one antenna port; wherein the at least one antenna port The antenna port in the first antenna port set used by the first network side device is not exactly the same; the transmitter 20 is configured to send the data that needs to be transmitted by itself to the terminal device.
  • the processor 10 is configured to receive, by the receiver 30, the second antenna port set from the first network side device.
  • the receiver 30 is configured to receive the indication information sent by the first network side device, where the indication information is used to indicate that the first network side device and the second network side device will jointly
  • the terminal device sends data;
  • the first network side device is a network side device that is accessed by the terminal device; and receives the first part of data sent by the first network side device and the second network side device Two parts of data;
  • the processor 10 is configured to receive the first part of data and the second part of data according to the indication information.
  • the processor 10 is further configured to perform channel estimation according to the first demodulation reference signal sent by the first antenna port that is sent by the first network side device by using the first network side device, and according to the channel estimation result. Demodulating the first partial data; and performing channel estimation according to the second demodulation reference signal sent by the second antenna port used by the second network side device to send the second partial data, and estimating according to the channel As a result, the second partial data is demodulated.
  • the first antenna port and the second antenna port are different.
  • the receiver 30 is further configured to receive an antenna port allocation result sent by the first network side device, where the port allocation result includes a first antenna port set used by the first network side device, and the a second antenna port set used by the network side device; the antenna port in the first antenna port set and the antenna port in the second antenna port set are not completely identical; the first antenna port is the first An antenna port in a set of antenna ports, wherein the second antenna port is an antenna port in the second set of antenna ports; and the processor 10 is configured to determine, according to a correspondence between the antenna port and the demodulation reference signal, The first demodulation reference signal corresponding to an antenna port and the second demodulation reference signal corresponding to the second antenna port.
  • the receiver 30 is configured to receive first indication information sent by the first network side device and second indication information sent by the second network side device, where the first indication information is used to indicate the Antenna port information of the first antenna port set used by the first network side device and its corresponding QCL information, the second indication information is used to indicate antenna port information of the second antenna port set used by the second network side device And corresponding to the QCL information; the antenna port in the first antenna port set and the antenna port in the second antenna port set are not identical; the processor 10 is configured to use the antenna port according to the first antenna port set And receiving the first part of the data sent by the first network side device and the second network side device, where the information and the corresponding QCL information and the antenna port information of the second antenna port set and the corresponding QCL information thereof Two parts of data.
  • the processor 10 is further configured to perform channel estimation according to the first demodulation reference signal sent by the first antenna port that is sent by the first network side device by using the first network side device, and according to the channel estimation result. Demodulating the first partial data; and performing channel estimation according to the second demodulation reference signal sent by the second antenna port used by the second network side device to send the second partial data, and estimating according to the channel Demodulating the second portion of data; wherein the first antenna port and the second antenna port are different, and the first antenna port is all or part of an antenna port in the first antenna port set, The second antenna port is all or part of the antenna port in the second antenna port set.
  • the processor 10 is further configured to determine, according to a correspondence between the antenna port and the demodulation reference signal, the first demodulation reference information corresponding to the first antenna port and the second antenna port corresponding to the second antenna port.
  • the second demodulation reference signal is further configured to determine, according to a correspondence between the antenna port and the demodulation reference signal, the first demodulation reference information corresponding to the first antenna port and the second antenna port corresponding to the second antenna port.
  • the second demodulation reference signal is further configured to determine, according to a correspondence between the antenna port and the demodulation reference signal, the first demodulation reference information corresponding to the first antenna port and the second antenna port corresponding to the second antenna port.
  • an embodiment of the present invention further provides a data transmission apparatus, where the data transmission apparatus includes a functional module for performing the foregoing method steps.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

一种数据传输方法、网络侧设备及终端设备，该方法包括：第一网络侧设备向终端设备发送指示信息，所述指示信息用于指示第一网络侧设备和第二网络侧设备将共同向终端设备发送数据；第一网络侧设备将需要自身发送的数据映射到第一天线端口集合中的全部或部分天线端口并发送映射到所述天线端口的所述需要自身发送的数据给终端设备；其中，第一天线端口集合中的天线端口和所述第二网络侧设备所使用的第二天线端口集合中的天线端口不完全相同。通过该方法，可以实现第一网络侧设备和第二网络侧设备共同为同一终端设备传输数据的目的。

Description

一种数据传输方法、网络侧设备及终端设备
本申请要求在2016年3月31日提交中华人民共和国知识产权局、申请号为201610201028.0、发明名称为“一种数据传输方法、网络侧设备及终端设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种数据传输方法、网络侧设备及终端设备。
背景技术
多输入多输出(英文：Multiple Input Multiple Output，简称：MIMO)技术(也可以称为多天线技术)可以通过空间分集提升系统可靠性、空间复用提升系统容量、波束赋形提升小区覆盖。长期演进(英文：Long Term Evolution，简称：LTE)系统的物理层基本技术即包括MIMO技术。
LTE的多天线系统中，为了区分不同的信道，定义了不同的逻辑端口(port)，其中，用户级参考信号，例如解调参考信号，在现有LTE系统中为DM-RS(英文：Demodulation-Reference Signal)，通过天线端口5、天线端口7、天线端口8或者天线端口7-14中的一个或多个天线端口发送，所以这些用于发送DM-RS的天线端口又称为DM-RS端口。同样的，数据也会在不同的天线端口上进行发送，例如在天线端口5、天线端口7、天线端口8等一个或多个天线端口发送，这些用于发送数据的天线端口又称为数据端口。接收端可以利用与数据端口相同的天线端口上发送的DM-RS进行信道估计和数据解调。
LTE在版本10中，引入了新的传输模式，即传输模式9，支持8个天线端口，并支持多用户MIMO传输。为了支持8天线传输，基站需要在物理下行控制信道，如LTE中的PDCCH(英文：Physical Downlink Control Channel)中指示用户物理下行共享信道(如LTE中的PDSCH，英文：Physical Downlink Shared Channel)数据对应的预编码层数以及DM-RS对应的天线端口号，终端设备通过检测PDCCH中相应的指示域，可以得到其接收的PDSCH数据包含多少层以及每层对应的天线端口，终端设备通过天线端口发送的DM-RS进行信道估计，然后进行PDSCH的数据解调。
LTE在第三代合作伙伴计划(英文：3rd Generation Partnership Project，简称：3GPP)版本11中，为了支持多点协作传输，引入了天线端口准共址，在LTE系统中简称为QCL(英文：Quasi Co-Located)的概念。从QCL的天线端口发送出的信号会经过相同的大尺度衰落。大尺度衰落包括时延扩展、多普勒扩展、多普勒频移、平均信道增益和平均时延。为了支持终端设备从服务基站通过PDCCH接收下行控制信息，从协作基站通过PDSCH接收下行数据，版本11中定义了一种新的传输模式，即传输模式10，主要引入了物理下行共享信道资源元素映射以及准共址指示，在LTE系统中简称为PQI(英文：PDSCH RE Mapping and QCL Indicator)，用来指示下行数据是从哪一个基站发送的，其对应的信道大尺度特征与哪一组天线端口一致。UE根据PQI，结合无线资源控制(英文：Radio Resource Control，简称：RRC)信令配置的PDSCH映射消息元素，可以得知解调该下行数据需要使用哪一组天线端口对应的无线信道参数。
由于LTE版本11中的PQI仅支持一组参数，意味着PDSCH只能从一组QCL天线端口发送，这样限制了传输模式10的应用范围，例如在分布式MIMO系统中，或者多站点协作传输系统中，只能通过单频网络(英文：Single Frequency Network，简称SFN)技术(多个天线端口/基站在相同的时频资源上发送相同的调制数据)将多个非QCL的天线端口合成属于同一个QCL集合的天线端口，为单个用户进行SFN传输，比方说两个地理分离的天线端口分别属于两个QCL集合，如果想在同一时域符号通过这两个天线端口向同一个终端设备发送数据，那么按照现有协议，只能把这两个天线端口虚拟化成一个合成的天线端口，然后向终端设备发送数据。而不支持分属不同QCL天线端口集合的多个天线端口在同一时域符号为单个用户进行多流传输或者发射分集传输等基本的MIMO传输。
发明内容
本发明实施例提供一种数据传输方法、网络侧设备及终端设备，用以解决现有技术中非准共址的多个天线端口不能共同为单个用户服务的技术问题。
第一方面，本发明实施例提供了一种数据传输方法，包括：
第一网络侧设备向终端设备发送指示信息，所述指示信息用于指示所述第一网络侧设备和第二网络侧设备将共同向所述终端设备发送数据；所述第一网络侧设备将需要自身发送的数据映射到第一天线端口集合中的全部或部分天线端口上并发送映射到所述天线端口上的所述需要自身发送的数据；其中，所述第一天线端口集合中的天线端口和所述第二网络侧设备所使用的第二天线端口集合中的天线端口不完全相同。
在本发明实施例的方案中，第一网络侧设备使用的第一天线端口集合，第二网络侧设备使用第二天线端口集合，并且进一步第一网络侧设备向终端设备发送用于指示共同传输的指示信息，所以终端设备可以正确的进行数据解调，所以本发明实施例的方案可以支持非QCL的第一网络侧设备和其它网络侧设备共同向终端设备进行数据传输。或者，在本发明实施例的方案中，第一网络侧设备使用的第一天线端口集合，第二网络侧设备使用第二天线端口集合，并且进一步第一网络侧设备向终端设备发送第一指示信息，第二网络侧设备向终端设备发送第二指示信息，所述第一指示信息用于指示第一网络侧设备使用的第一天线端口集合中的天线端口信息以及对应的QCL信息，所述第二指示信息用于指示第二网络侧设备使用的第二天线端口集合中的天线端口信息以及对应的QCL信息，由所述第一指示信息和第二指示信息，可以使终端设备确定第一网络侧设备和第二网络侧设备向终端设备进行共同传输，进而终端设备可以正确的进行数据解调，所以本发明实施例的方案可以支持非QCL的第一网络侧设备和其它网络侧设备共同向终端设备进行数据传输。
结合第一方面，在第一方面的第一种可能的实现方式中，在所述第一网络侧设备向所述终端设备发送指示信息之前，所述方法还包括：所述第一网络侧设备向所述终端设备发送天线端口分配结果；其中，所述天线端口分配结果用于指示所述第一天线端口集合和/或所述第二天线端口集合。通过该方法，可以实现动态分配天线端口集合的目的，比较灵活，便于使用。
结合第一方面或第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，在所述第一网络侧设备向终端设备发送指示信息之前，所述方法还包括：所述第一网络侧设备向所述第二网络侧设备发送通知信息，所述通知信息用于通知所述第二网络 侧设备，所述第二网络侧设备所使用的所述第二天线端口集合或所述第一天线端口集合。
结合第一方面的第一种可能的实现方式或第一方面的第二种可能的实现方式，在第一方面的第三种可能的实现方式中，第一网络侧设备向终端设备发送天线端口分配结果，包括：所述第一网络侧设备通过高层信令向所述终端设备发送所述天线端口分配结果。
结合第一方面的第三种可能的实现方式，在第一方面的第四种可能的实现方式中，所述第一网络侧设备通过高层信令向所述终端设备发送天线端口分配结果，包括：所述第一网络侧设备通过高层信令中的物理下行共享信道映射和准共址QCL配置信息元素向所述终端设备发送所述天线端口分配结果。
结合第一方面或第一方面的第一种可能的实现方式至第一方面的第四种可能的实现方式中的任意一种，在第一方面的第五种可能的实现方式中，所述第一网络侧设备将需要自身发送的数据通过所述第一天线端口集合中的天线端口发送给所述终端设备，包括：所述第一网络侧设备将需要在共同传输的数据的多个码字中的部分码字映射到所述第一天线端口集合中的天线端口上并发送所述映射到所述第一天线端口集合中的天线端口上的所述部分码字；或
所述第一网络侧设备将分集传输的一路信号映射到所述第一天线端口集合中的天线端口上并发送映射到所述天线端口上的所述一路信号。
结合第一方面或第一方面的第一种可能的实现方式至第一方面的的第五种可能的实现中的任意一种，在第一方面的第六种可能的实现方式中，所述第一天线端口集合和所述第二天线端口集合中的天线端口还用于传输解调参考信号，且使用发送所述数据的端口传输解调所述数据用的解调参考信号。
第二方面，本发明实施例还提供一种数据传输方法，包括：
第二网络侧设备获得协作指示；所述协作指示用于指示所述第二网络侧设备与第一网络侧设备共同向终端设备发送数据；所述第二网络侧设备获取预先得到的第二天线端口集合；第二天线端口集合中包含至少一个天线端口；其中，所述至少一个天线端口与所述第一网络侧设备所使用的第一天线端口集合中的天线端口不完全相同；所述第二网络侧设备将需要自身发送的数据映射到所述第二天线端口集合中的全部或部分天线端口并发送映射到所述天线端口的所述需要自身发送的数据。
结合第二方面，在第二方面的第一种可能的实现方式中，所述第二网络侧设备获取预先得到的第二天线端口集合，包括：所述第二网络侧设备获取从所述第一网络侧设备接收的第二天线端口集合。
结合第二方面或第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述第一天线端口集合和所述第二天线端口集合中的天线端口还用于传输解调参考信号，且使用发送所述数据的端口传输解调所述数据用的解调参考信号。
第三方面，本发明实施例还提供一种数据传输方法，包括：
终端设备接收第一网络侧设备发送的指示信息；所述指示信息用于指示所述第一网络侧设备和第二网络侧设备将在同一时域符号向所述终端设备发送数据；所述终端设备根据所述指示信息接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据。
可选的，进一步的，所述终端设备根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计 结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据；其中，所述第一天线端口和所述第二天线端口不相同。可以理解的是，解调参考信号可以是LTE系统中的DM-RS，也可以是随着系统演进，出现的实现和DM-RS解调参考功能类似的其它名称的信号，该解调参考信号的功能可以参考背景技术或相应3GPP标准中的描述。
结合第三方面，在第三方面的第一种可能的实现方式中，所述方法还包括：
所述终端设备接收所述第一网络侧设备发送的天线端口分配结果；所述天线端口分配结果包括所述第一网络侧设备所使用的第一天线端口集合和所述第二网络侧设备所使用的第二天线端口集合；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；所述第一天线端口为所述第一天线端口集合中的全部或部分天线端口，所述第二天线端口为所述第二天线端口集合中的全部或部分天线端口；所述终端设备根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信号以及与所述第二天线端口对应的所述第二解调参考信号。
结合第三方面或第三方面的第一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述第一天线端口集合和所述第二天线端口集合中的天线端口还用于传输解调参考信号，且使用发送所述数据的端口传输解调所述数据用的解调参考信号。其中，在终端设备侧，传输解调参考信号是指接收解调参考信号。
第四方面，本发明实施例提供一种数据传输方法，包括：
终端设备接收第一网络侧设备发送的第一指示信息以及第二网络侧设备发送的第二指示信息，所述第一指示信息用于指示所述第一网络侧设备使用的第一天线端口集合的天线端口信息以及其对应的QCL信息，所述第二指示信息用于指示所述第二网络侧设备使用的第二天线端口集合的天线端口信息以及其对应的QCL信息；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；所述终端设备根据所述第一天线端口集合的天线端口信息以及其对应的QCL信息和所述第二天线端口集合的天线端口信息以及其对应的QCL信息，接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据。
所述对应的QCL信息是指当前使用的天线端口与发送某一资源(或信号)的天线端口满足QCL关系。通过指示当前使用的天线端口与对应的资源的天线端口的QCL关系，可以辅助终端设备联合当前使用的天线端口发送的信号与对应的资源(或信号)联合进行信道估计和/或信号解调。
第一指示信息和第二指示信息可以隐式的指示第一网络侧设备和第二网络侧设备将在同一时域符号向终端设备发送数据，终端设备根据第一指示信息中包括的天线端口信息对应的QCL信息和第二指示信息中包括的天线端口信息对应的QCL信息的不同，确定第一网络侧设备和第二网络侧设备将在同一时域符号向所述终端设备发送数据。
结合第四方面，在第四方面的第一种可能的实现方式中，所述方法还包括：
所述终端设备根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部 分数据；其中，所述第一天线端口和所述第二天线端口不相同，所述第一天线端口为所述第一天线端口集合中全部或部分天线端口，所述第二天线端口为所述第二天线端口集合中的全部或部分天线端口。
结合第四方面或第四方面的第一种可能的实现方式，在第四方面的第二种可能的实现方式中，所述方法还包括：
所述终端设备根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信息和与所述第二天线端口对应的第二解调参考信号。
第五方面，本发明实施例提供一种网络侧设备，包括：
处理器，用于获得指示信息并将需要自身发送的数据映射到第一天线端口集合中的全部或部分天线端口；所述指示信息用于指示所述网络侧设备和第二网络侧设备将共同向终端设备发送数据；其中，所述第一天线端口集合中的天线端口和所述第二网络侧设备所使用的第二天线端口集合中的天线端口不完全相同；发送器，用于向所述终端设备发送所述指示信息，以及将映射到所述天线端口的所述需要自身发送的数据发送给所述终端设备。
结合第五方面，在第五方面的第一种可能的实现方式中，所述发送器还用于：在向所述终端设备发送所述指示信息之前，向所述终端设备发送天线端口分配结果；其中，所述天线端口分配结果用于指示所述第一天线端口集合和/或所述第二天线端口集合。
结合第五方面或第五方面的第一种可能的实现方式，在第五方面的第二种可能的实现方式中，所述发送器还用于向所述第二网络侧设备发送通知信息，所述通知信息用于通知所述第二网络侧设备，所述第二网络侧设备所使用的所述第二天线端口集合或所述第一天线端口集合。
结合第五方面的第一种可能的实现方式或第五方面的第二种可能的实现方式中，在第五方面的第三种可能的实现方式中，所述发送器用于通过高层信令向所述终端设备发送所述天线端口分配结果。
结合第五方面的第三种可能的实现方式，在第五方面的第四种可能的实现方式中，所述发送器用于通过高层信令中的物理下行共享信道映射和准共址QCL配置信息元素向所述终端设备发送所述天线端口分配结果。
结合第五方面或第五方面的第一种可能的实现方式至第五方面的第四种可能的实现方式中任意一种，在第五方面的第五种可能的实现方式中，所述处理器用于将需要共同传输的数据的多个码字中的部分码字映射到所述第一天线端口集合中的天线端口上并通过所述发送器发送所述映射到所述第一天线端口集合中的天线端口上的所述部分码字；或将分集传输的一路信号映射到所述第一天线端口集合中的天线端口上并通过所述发送器发送映射到所述天线端口上的所述一路信号。
结合第五方面或第五方面的第一种可能的实现方式至第五方面的第五种可能的实现方式中任意一种，在第五方面的第六种可能的实现方式中，所述第一天线端口集合和所述第二天线端口集合中的天线端口还用于传输解调参考信号，且使用发送所述数据的端口传输解调所述数据用的解调参考信号。
在前述的一些可能的实现方式中，所述通知信息包括天线端口索引项，所述天线端口索引项的大小为N比特，其中，第i个比特为0，表示所述第二网络侧设备或所述第一网络侧设备支持的天线端口中第i个天线端口没有被配置，第i个比特为1表示所述第二网络侧设备或所述第一网络侧设备支持的天线端口中第i个天线端口被配置，i取值为0至N-1间的整 数，N为正整数。
在前述的一些可能的实现方式中，所述指示信息包括物理下行共享信道资源元素映射以及准共址指示PQI，所述PQI的域值由比特数大于2的比特表示。
第六方面，本发明实施例提供一种网络侧设备，包括：
接收器，用于接收协作指示；所述协作指示用于指示所述网络侧设备与第一网络侧设备共同向终端设备发送数据；处理器，用于将需要自身发送的数据映射到第二天线端口集合中的全部或部分天线端口；第二天线端口集合中包含至少一个天线端口；其中，所述至少一个天线端口与所述第一网络侧设备所使用的第一天线端口集合中的天线端口不完全相同；发送器，用于将映射到所述天线端口的所述需要自身发送的数据发送给所述终端设备。
结合第六方面，在第六方面的第一种可能的实现方式中，所述处理器用于通过所述接收器从所述第一网络侧设备接收第二天线端口集合。
结合第六方面或第六方面的第一种可能的实现方式，在第六方面的第二种可能的实现方式中，所述第一天线端口集合和所述第二天线端口集合中的天线端口还用于传输解调参考信号，且使用传输所述数据的端口传输解调所述数据用的解调参考信号。
第七方面，本发明实施例提供一种终端设备，包括：
接收器，用于接收第一网络侧设备发送的指示信息；所述指示信息用于指示所述第一网络侧设备和第二网络侧设备将共同向所述终端设备发送数据；以及接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据；处理器，用于根据所述指示信息接收所述第一部分数据和所述第二部分数据。
结合第七方面，在第七方面的第一种可能的实现方式中，所述处理器，还用于根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据；其中，所述第一天线端口和所述第二天线端口不相同。
结合第七方面或第七方面的第一种可能的实现方式，在第七方面的第二种可能的实现方式中，所述接收器还用于接收所述第一网络侧设备发送的天线端口分配结果；所述端口分配结果包括所述第一网络侧设备所使用的第一天线端口集合和所述第二网络侧设备所使用的第二天线端口集合；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；所述第一天线端口为所述第一天线端口集合中的全部或部分天线端口，所述第二天线端口为所述第二天线端口集合中的全部或部分天线端口；所述处理器用于根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信号以及与所述第二天线端口对应的所述第二解调参考信号。
结合第七方面或第七方面的第一种可能的实现方式或第七方面的第二种可能的实现方式，在第七方面的第三种可能的实现方式中，所述指示信息包括物理下行共享信道资源元素映射以及准共址指示PQI，所述PQI的域值由比特数大于2的比特表示。
第八方面，本发明实施例提供一种终端设备，包括：
接收器，用于接收第一网络侧设备发送的第一指示信息以及第二网络侧设备发送的第二指示信息，所述第一指示信息用于指示所述第一网络侧设备使用的第一天线端口集合的 天线端口信息以及其对应的QCL信息，所述第二指示信息用于指示所述第二网络侧设备使用的第二天线端口集合的天线端口信息以及其对应的QCL信息；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；
处理器，用于根据所述第一天线端口集合的天线端口信息以及其对应的QCL信息和所述第二天线端口集合的天线端口信息以及其对应的QCL信息，接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据。
结合第八方面，在第八方面的第一种可能的实现方式中，所述处理器，还用于根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据；其中，所述第一天线端口和所述第二天线端口不相同，所述第一天线端口为所述第一天线端口集合中全部或部分天线端口，所述第二天线端口为所述第二天线端口集合中的全部或部分天线端口。
结合第八方面或第八方面的第一种可能的实现方式，在第八方面的第二种可能的实现方式中，所述处理器，还用于根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信息和与所述第二天线端口对应的第二解调参考信号。
第九方面，本发明实施例提供一种数据传输装置，所述数据传输装置包括用于实现第一方面所述的方法的功能模块。
第十方面，本发明实施例还提供一种数据传输装置，所述数据传输装置包括用于实现第二方面所述的方法的功能模块。
第十一方面，本发明实施例还提供一种数据传输装置，所述数据传输装置包括用于实现第三方面所述的方法的功能模块。
第十二方面，本发明实施例还提供一种数据传输装置，所述数据传输装置包括用于实现第四方面所述的方法的功能模块。
第十三方面，本发明实施例还提供一种计算机存储介质，所述计算机存储介质上存储有程序代码，所述程序代码包括用于实现所述第一方面、第二方面、第三方面或第四方面的方法的任意可能的实现方式的指令。
在前述一些可能的实现方式中，共同向终端设备发送数据，包括：第一网络侧设备和第二网络侧设备在同一时域符号上向所述终端设备发送数据；或第一网络侧设备和第二网络侧设备在不同的时域符号上向所述终端设备发送数据。其中，第一网络侧设备和第二网络侧设备在同一时域符号上向所述终端设备发送数据，包括但不限于多点多流协作传输或多点分集协作传输的方式。
附图说明
图1a-图1b为本发明实施例提供的一种通信系统结构图；
图2为本发明实施例提供的一种装置的结构图；
图3为本发明实施例提供的一种第一网络侧设备侧的数据传输方法的流程图。
具体实施方式
本发明实施例提供一种数据传输方法、网络侧设备及终端设备，用以解决现有技术中非准共址的多个天线端口无法共同为单个用户服务的技术问题。
以下将详细描述本发明实施例中方案的实施过程、目的。
本发明实施例提供的一种数据传输方法，该方法可以应用于通信网络系统中。请参考图1a和图1b所示，为本发明实施例提供的一种可能的通信网络系统结构图。如图1a中所示的结构，该通信网络系统包括第一网络侧设备、第二网络侧设备和终端设备。第一网络侧设备为终端设备的服务网络侧设备，服务侧网络设备是指该通过无线空口协议为终端设备提供RRC连接、非接入层(英文：non-access stratum，简称：NAS)移动性管理和安全性输入等服务的网络侧设备。第一网络侧设备和终端设备可以通过空口协议进行通信。第二网络侧设备的数量可以是一个或多个，且与第一网络侧设备为满足不同QCL的网络侧设备，一般而言，第二网络侧设备与第一网络侧设备位于不同的地理位置。通常，第二网络侧设备为第一网络侧设备的邻网络侧设备。第二网络侧设备也可以通过空口协议进行数据传输。第二网络侧设备用于协助第一网络侧设备共同向终端设备进行数据传输，例如多流传输或者分集传输，所以第二网络侧设备也可以称为协作网络侧设备。第一网络侧设备和第二网络侧设备之间也可以进行通信，例如进行控制消息和/或指示信息的传递。
在实际运用中，第一网络侧设备也可以是协作网络侧设备，第二网络侧设备为服务网络侧设备。
另一方面，第一网络侧设备和第二网络侧设备可以是同一设备的不同传输点，例如两个距离较远的射频单元(英文：Radio Unit，简称：RU)或者称为射频头(英文：Radio Head，简称：RH)，或者是两个完全独立的网络侧设备，例如两个基站。
在本文中，第一网络侧设备和第二网络侧设备同时向终端设备发送数据包括两个含义。第一层含义，第一网络侧设备和第二网络侧设备在同一时域符号上向所述终端设备发送数据。第二层含义，第一网络侧设备和第二网络侧设备在不同的时域符号上向所述终端设备发送数据。
需要说明的是，在协同多点(英文：Coordinated Multiple Points，简称：CoMP)传输中，假设终端设备收到的多个天线端口信号经过的无线信道具有相同的大尺度特性，即该多个天线端口属于同一个QCL集合。这样，对于与终端设备间无线信道不同的两个网络设备而言，如果同时向该终端设备进行数据发送，则需要两个网络设备中的天线进行联合虚拟化形成满足QCL约束的天线端口，在该天线端口上发送解调参考信号以及数据。一种联合虚拟化的方法是SFN技术，即第一网络侧设备的天线集合中的第一天线端口与第二网络侧设备的天线集合中的第二天线端口合成一个天线端口，从该天线端口中发送的数据为第一天线和第二天线在相同的时频资源中发送相同的调制符号。
在第一层含义的情况下，本实施例方案中第一网络侧设备使用的第一天线端口集合与第二网络侧设备所使用的第二天线端口集合中的天线端口不完全相同。换言之，第一天线端口集合属于一个QCL集合，第二天线端口集合属于另一个QCL集合，这两个QCL集合是非QCL的。而在本实施例中，可以通过两个非QCL的天线端口在同一个时域符号上向终端设备发送数据。
在第二层含义的情况下，虽然第一网络侧设备和第二网络侧设备会在不同的时域符号上发送数据，但是本实施例中预先进行了天线端口分配，且第一网络侧设备使用的第一天 线端口集合与第二网络侧设备所使用的第二天线端口集合中的天线端口不完全相同。
在图1b所示的结构中，与图1a所示的结构不同的是，第一网络侧设备和第二网络侧设备同时接入集中调度器。第一网络侧设备和第二网络侧设备之间可以不用直接进行通信，而上述控制消息和/或指示信息均由集中调度器向第一网络侧设备和第二网络侧设备下达。
在实际部署时，集中调度器可以是单独的物理设备，也可以是集成在第一网络侧设备上的一个功能模块，或是集成在其他设备上的一个功能模块，在本文中不予限定。
应理解，图1a和图1b所示的通信系统中仅示出了一个终端设备(孤立终端)和两个网络侧设备的情形，但本发明并不限于此。该通信系统中还可包括除这两个网络侧设备以外的在相同的时频资源上传输业务的近邻网络侧设备和终端设备，每个网络侧设备的覆盖范围内还可以包括其它数量的终端设备。进一步可选的，图1a和图1b中网络侧设备和终端设备所在的通信系统还可以包括网络控制器和/或移动管理实体等其它网络实体，本发明实施例不做限定。
本文中提到的网络侧设备，可以是全球移动通讯(英文：Global System of Mobile communication；简称：GSM)或码分多址(英文：Code Division Multiple Access；简称：CDMA)中的基站(英文：Base Transceiver Station；简称：BTS)中，也可以是宽带码分多址(英文：Wideband Code Division Multiple Access；简称：WCDMA)中的基站(英文：NodeB；简称NB)，还可以是长期演进(英文：Long Term Evolution；简称：LTE)中的演进型基站(英文：Evolutional Node B；简称：eNB或eNodeB)，或者中继站或接入点，或者未来5G网络中的基站等，本文中并不限定。
本文中提到的终端设备，可以是无线终端设备也可以是有线终端设备，无线终端设备可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端设备可以经无线接入网(英文：Radio Access Network；简称：RAN)与一个或多个核心网进行通信，无线终端设备可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(英文：Personal Communication Service；简称：PCS)电话、无绳电话、会话发起协议(英文：Session Initiation Protocol；简称：SIP)话机、无线本地环路(英文：Wireless Local Loop；简称：WLL)站、个人数字助理(英文：Personal Digital Assistant；简称：PDA)等设备。无线终端设备也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、用户设备(User Device or User Equipment)。
另外，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本文中的一些英文简称为以LTE系统为例对本发明实施例进行的描述，其可能随着网络的演进发生变化，具体演进可以参考相应标准中的描述。
接下来请参考图2，图2为本发明实施例提供的装置的可能的结构图。该装置例如为上述第一网络侧设备、第二网络侧设备、终端设备的一种可能的结构图。如图2所示，该 装置包括：处理器10、发送器20、接收器30、存储器40和天线50。存储器40、发送器20和接收器30和处理器10可以通过总线进行连接。当然，在实际运用中，存储器40、发送器20和接收器30和处理器10之间可以不是总线结构，而可以是其它结构，例如星型结构，本申请不作具体限定。
可选的，处理器10具体可以是通用的中央处理器或特定应用集成电路(英文：Application Specific Integrated Circuit，简称：ASIC)，可以是一个或多个用于控制程序执行的集成电路，可以是使用现场可编程门阵列(英文：Field Programmable Gate Array，简称：FPGA)开发的硬件电路，可以是基带处理器。
可选的，处理器10可以包括至少一个处理核心。
可选的，存储器40可以包括只读存储器(英文：Read Only Memory，简称：ROM)、随机存取存储器(英文：Random Access Memory，简称：RAM)和磁盘存储器中的一种或多种。存储器40用于存储处理器10运行时所需的数据和/或指令。存储器40的数量可以为一个或多个。
可选的，每个天线端口可以发送一种解调参考信号(英文：Demodulation Reference Signal，简称：DM-RS)，用于终端设备进行PDSCH的信道估计和PDSCH数据解调。以LTE为例，LTE中支持8个天线端口，这8个天线端口可以分为两组，端口{7、8、11、13}为一组，端口{9、10、12、14}为另一组。两组天线端口通过频分进行区分，每一组内四个天线端口通过码分进行区分。
可选的，发送器20和接收器30在物理上可以相互独立也可以集成在一起。发送器20可以通过天线50进行数据发送。接收器30可以通过天线50进行数据接收。
接下来请参考如图3所示，为本发明实施例中第一网络侧设备侧的数据传输方法的流程图。如图3所示，该方法包括：
步骤101：第一网络侧设备和/或第二网络侧设备向终端设备发送指示信息，所述指示信息用于指示第一网络侧设备和第二网络侧设备将共同向终端设备发送数据；
步骤102：第一网络侧设备将需要自身发送的数据映射到第一天线端口集合中的全部或部分天线端口并发送映射到所述天线端口上的所述需要自身发送的数据给终端设备；其中，第一天线端口集合中的天线端口和第二网络侧设备所使用的第二天线端口集合中的天线端口不完全相同。
可选的，在步骤101之前，该方法还包括：第一网络侧设备向所述终端设备发送天线端口分配结果；其中，所述端口分配结果用于指示所述第一天线端口集合和/或所述第二天线端口集合。通过该方法，可以实现动态分配天线端口的效果，比较灵活。
其中，如果第一网络侧设备仅向终端设备发送用于指示第一天线端口集合的分配结果，那么第二网络侧设备还向终端设备发送用于指示第二天线端口集合的分配结果。
其中，关于天线端口分配结果的获取方式可以有以下四种但不限于以下四种。第一种，第一网络侧设备自身配置自身所使用的第一天线端口集合和第二网络侧设备所使用的第二天线端口集合。该种方式适用于图1a所示的通信系统。
举例来说，第一网络侧设备作为终端设备的服务基站，在确定需要和第二网络侧设备共同发送数据给终端设备时，就为自身分配天线端口集合，以及为第二网络侧设备分配天线端口。分配的结果例如为第一天线端口集合为{7，8，11，13}，第二天线端口集合为{9，10，12，14}。
第二种，由集中调度器为第一网络侧设备和第二网络侧设备分别配置第一天线端口集合和第二天线端口集合。该种方式适用于如图1b所述的通信系统。
举例来说，集中调度器在确定需要服务基站和协作基站共同向终端设备传输数据时，就分别为服务基站和协作基站配置天线端口集合，然后可以通过集中调度器与基站之间的通信协议，将端口配置结果通知给服务基站与协作基站。
第三种，第一天线端口集合和第二天线端口集合是预先配置的。该种方案适用于图1a以及图1b所示的通信系统。
举例来说，作为服务基站，预先配置的天线端口集合为{7，8，11，13}，作为协作基站，预先配置的天线端口集合为{9，10，12，14}。当集中调度器确定需要服务基站和协作基站共同向终端设备发送数据时，可以向服务基站和协作基站发送指示信息，在接收到指示信息时，服务基站即可将预先配置的天线端口集合作为天线端口分配结果，而协作基站也能获知共同发送数据的天线端口集合。
另外，如图1a所示的结构时，第一网络侧设备还可以向第二网络侧设备发送指示信息，用于指示第二网络侧设备共同向终端设备发送数据，那么此时第二网络侧设备即可使用预先配置的第二天线端口集合中的端口向终端设备发送数据。
第四种，第一天线端口集合可以是预先配置的，也可以是由第一网络侧设备确定的，也可以是由集中调度器分配的。然后第一网络侧设备向第二网络侧设备发送通知信息，通知信息用于通知第二网络侧设备，第一网络侧设备所使用的第一天线端口集合。第二网络侧设备可以根据第一网络侧设备所使用的第一天线端口集合确定自己所使用的天线端口集合。
可选的，通知信息包括天线端口索引项，所述天线端口索引项的大小为N比特，其中，第i个比特为0，表示第一网络侧设备支持的天线端口中第i个天线端口没有被配置，为1表示第一网络侧设备支持的天线端口中第i个天线端口被配置，i取值为0至N-1间的整数，N为正整数。相应的，第二网络侧设备通过解析该天线端口索引项，即可获知第一网络侧设备的哪些天线端口被配置，那么就可以根据端口索引项确定自己使用哪些天线端口。
举例来说，在LTE系统中，8个天线端口是端口7-14，所以N取值为可以为8，即包括第0-7个比特，当第0个比特为0时，表示第一网络侧设备所支持的第0个天线端口，即端口7没有被配置。
为了确保配置的准确性，每个网络侧设备支持的天线端口是按照约定固定规则排列的，如通过天线端口号大小进行排序，那么第1个天线端口例如就是天线端口号最小的那个天线端口。
当然，在实际运用中，也可以和端口号进行关联，例如当第i个比特为0时，可以表示端口i+7没有被配置，继续以LTE为例，假设第0个比特为0时，表示端口7没有被配置。两种方式得到的结果是相同的。其中，i+7中的7的物理含义为天线端口的起始端口号。
需要说明的是，上述四种天线端口分配方法，不管是哪一种，以及不管是采用哪种原则进行分配，分配的结果为第一天线端口集合和第二天线端口集合中的天线端口不完全相同。较佳的，两个集合中的端口没有相同的。
需要说明的是，端口分配的动作可以是在每次发送数据前都执行一次，也可以是在当 前信道条件满足共同传输时执行一次，分配好之后，可以持续使用到信道条件不满足共同传输时，然后在下次信道条件满足共同传输时再执行一次。
举例而言，在一次天线端口集合分配好之后，比如相邻的两次分配期间传输了3次数据，使用的就是分配好的天线端口集合中的端口，每次传输可以根据实际需求，如传输数据的不同，使用的相同或不同的端口。在下一次天线端口集合分配时，和上次分配的天线端口集合可以是相同的，也可以是不同的。
可以理解的是，在相邻的两次分配期间具体使用的天线端口可以如背景技术中所述的采用下行物理控制信道进行分配或指示。该下行物理控制信道可以是LTE系统中的PDCCH信道，也可以是随着系统演进出现的实现下行物理控制功能的其它名称的信道。
可选的，第二网络侧设备为第一网络侧设备的邻网络侧设备。举例来说，第一网络侧设备为服务基站，而第二网络侧设备为服务基站的邻基站。
对应于第一种方式，在步骤102之前，该方法还包括：第一网络侧设备向第二网络侧设备发送通知信息，所述通知信息用于通知第二网络侧设备，第二网络侧设备所使用的第二天线端口集合。
可选的，所述通知信息包括天线端口索引项，所述天线端口索引项的大小为N比特，其中，第i个比特为0，表示第二网络侧设备支持的天线端口中第i个天线端口没有被配置，为1表示第二网络侧设备支持的天线端口中第i个天线端口被配置，i取值为0至N-1间的整数，N为正整数。相应的，第二网络侧设备通过解析该天线端口索引项，即可获知自己的哪些天线端口被配置，那么这些被配置的端口形成的集合即为第二天线端口集合。
在实际运用中，通知信息可以是一个单独的消息，也可以是通过在现有的消息中增加天线端口索引项形成的消息。
举例来说，在3GPP协议36.423中规定了多个基站之间通过X2接口发送小区间CoMP传输信息，所以可以在CoMP信息中增加天线端口索引项。增加的天线端口索引项例如表一所示。
Figure PCTCN2017079074-appb-000001
表一
其中，O表示该信息元素(英文：Information Element，简称IE)为可选的，解调参考信号的加扰ID为生成解调参考信号序列时的初始化参数。
在第一网络侧设备确定和第二网络侧设备共同为终端设备传输数据或者接收到集中调度器的共同传输指示时，第一网络侧设备可以向终端设备发送天线端口分配结果。该分配结果包括第一网络侧设备所使用的第一天线端口集合和第二网络侧设备所使用的第二天线端口集合。
可选的，第一网络侧设备可以通过高层信令向终端设备发送所述天线端口分配结果。
在实际运用中，第一网络侧设备可以采用不同于现有技术中的高层信令向终端设备通知端口分配结果，也可以复用现有技术中的高层信令，例如无线资源控制(英文：Radio Resource Control，简称：RRC)或者媒体接入控制控制元素(英文：Medium Access Control Control Element，简称：MAC CE)来向终端设备通知端口分配结果，例如在现有的高层信令中增加一个新的域，在该域上承载端口分配结果。
举例来说，在现有技术中，服务基站会通过RRC消息向终端设备发送QCL参数，具体来说，QCL参数携带在PDSCH映射和QCL配置信息元素中，而PDSCH配置信息元素又是PDSCH映射和QCL配置信息元素的上一级信息元素。在3GPP TS36.331-c60中，PDSCH配置信息元素如下：
Figure PCTCN2017079074-appb-000002
Figure PCTCN2017079074-appb-000003
其中PDSCH映射和QCL配置信息元素为PDSCH-RE-MappingQCL-Config-r11，该信息元素中承载有PDSCH资源映射信息(如小区级参考信号(英文：Cell-specific Reference Signal，简称：CRS)端口信息、CRS频偏信息、mbsfn子帧配置信息、PDSCH起始位置信息中的一项或多项)和QCL的配置信息(如非零功率信道状态信息参考信号(英文：Channel-State Information Reference Signal，简称：CSI-RS)配置信息中的一项或多项)。在本实施例中，可以在PDSCH映射和QCL配置信息元素中增加天线端口分配域。该端口分配域的格式例如为：
解调参考信号-PortIndex BIT STRING(SIZE(8))
scramblingIdentity INTEGER(0…503)
其中，解调参考信号-PortIndex表示该组QCL参数中，天线端口信息，由八个比特组成，第i个比特为0，表示端口7+i不存在，第i个比特为1，表示端口7+i存在。scramblingIdentity表示加扰ID，为0至503之间的整数。由于PDSCH映射和QCL配置信息元素的上一级信元即PDSCH配置信息元素中包含了DMRS-Config-r11(上述代码中斜体的部分)域，该域同样包含加扰ID，即scramblingIdentity，为了兼容协议中现有PDSCH信元配置，在PDSCH映射和QCL配置信元中新增的天线端口分配域可以仅仅在传输模式10或者新定义的传输模式生效，所述新定义的传输模式即为本实施例对应的传输模式。
本实施例中另一种高层信息向终端设备发送所述天线端口分配结果的例子，是在PDSCH配置信息元素中增加所述天线端口分配域。该天线端口分配域的格式不限，包括天线端口集合编号和/或每个天线端口集合对应的天线端口信息。不同的天线端口集合编号分别对应不同的天线端口集合。可选的，可以通过天线端口集合编号，按照固定的天线端口集合与天线端口之间的映射关系，隐式的获取该天线端口集合中包括的天线端口信息。
第一网络侧设备将第一天线端口集合和第二天线端口集合通知给终端设备，以便于终端设备在接收到第一网络侧设备和第二网络侧设备分别发送的数据时，通过第一天线端口集合中的端口对应的解调参考信号解调第一网络侧设备发送的数据，通过第二天线端口集 合中的端口对应的解调参考信号解调第二网络侧设备发送的数据。
需要说明的是，在一种可能的方案中，第一天线端口集合和/或第二天线端口集合可以是协议里规定好的(即网络侧设备和终端设备各自已有预配置的情况)，这种情况下，第一网络侧设备可以不用向终端设备发送相应的协议已规定好的端口分配结果。
另一方面，在第一网络侧设备确定和第二网络侧设备共同为终端设备传输数据或者接收到集中调度器的共同传输指示时，第一网络侧设备可以执行步骤101，即向终端设备发送指示信息，所述指示信息用于指示第一网络侧设备和第二网络侧设备将共同向终端设备发送数据。相应的，终端设备在接收到该指示信息时，即可获知接下来第一网络侧设备和第二网络侧设备共同发送数据给自身，那么在接收到来自第一网络侧设备和第二网络侧设备的数据时，终端设备即可采用第一网络侧设备和第二网络侧设备各自对应的端口集合中的端口对应的解调参考信号进行数据解调。
可选的，第一网络侧设备和/或第二网络侧设备通过物理层信令向终端设备发送指示信息。
在实际运用中，第一网络侧设备和/或第二网络侧设备可以通过单独的信令或消息向终端设备发送所述指示信息，也可以是对现有技术中的信令或消息进行扩展复用，形成新的指示信息。比如，该指示信息可以通过下行物理控制信道进行发送，该下行物理控制信道可以是LTE系统中的PDCCH，也可以是未来网络中实现相应下行物理控制功能的其它名称的信道，具体功能及演进可参考相应标准中的描述。
举例来说，请参考表二所示，为LTE中下行PDCCH格式2D中PQI域的含义(请参考3GPP TS 36.213-c50)。
PQI域的值 描述
'00' 高层配置的参数组1
'01' 高层配置的参数组2
'10' 高层配置的参数组3
'11' 高层配置的参数组4
表二
其中，PQI域的两个比特的任意组合都对应一组QCL参数配置和PDSCH资源映射配置，每一组QCL参数和PDSCH资源映射配置是通过RRC信令中的PDSCH映射和QCL配置信息元素进行配置的。
在现有技术中，PQI的域值只有两个比特，所以单次仅能指示一组QCL参数，所以每次就只有一个网络侧设备，如第一网络侧设备或第二网络侧设备，向终端设备传输数据。
在本实施例中，将现有技术中的PQI的域值扩充为更多比特，使得系统支持同时指示多于一组QCL参数。表三给出了一种PQI的域值扩充为4比特时指示的含义表格，需要注意的是，表三仅为示意，实际运用中可以依据需求进行表格设计。
Figure PCTCN2017079074-appb-000004
Figure PCTCN2017079074-appb-000005
表三
因此，第一网络侧设备在发送扩展后的PQI时，将PQI的域值填充对应的比特值，比如0100。在LTE中，一组QCL参数对应一个网络侧设备，那么终端设备在解析PQI的域值时，即可获知QCL参数组1和QCL参数组2，也即获知QCL参数组1对应的网络侧设备和QCL参数组2对应的网络侧设备将会共同传输数据给自身。再例如，本次PQI的域值为1010，那么终端设备在解析PQI的域值时，即可获知QCL参数组1、QCL参数组2和QCL参数组3，也即获知QCL参数组1对应的网络侧设备、QCL参数组2对应的网络侧设备和QCL参数组3对应的网络侧设备将会共同传输数据给自身。可选的，终端设备可以通过QCL参数组包含的小区配置信息来判断每个参数组对应的是第一网络侧设备还是第二网络侧设备。举例来说，QCL参数组1对应的是当前小区的配置(例如CRS端口、频移、CSI-RS配置中的一项或多项)，那么终端设备即可获知QCL参数组1对应的是第一网络侧设备。QCL参数组2-4(若有)对应的是其它小区的配置，所以可以获知QCL参数组2-4对应的是第二网络侧设备。
由上述表三也可以看出，本实施例中的方案同样兼容于PQI指示一组QCL参数的方案，即采用本实施例中的方案，可以是由第一网络侧设备单独传输数据给终端设备，也可以是由第二网络侧设备单独传输数据给终端设备，也可以是通过第一网络侧设备和第二网络侧设备共同传输数据给终端设备，只要第一网络侧设备通过不同的PQI的域值进行指示即可。
可选的，第一网络侧设备和第二网络侧设备可以向终端设备发送所述指示信息，所述指示信息可以隐式的指示第一网络侧设备和第二网络侧设备将共同向终端设备发送数据。比如，该指示信息可以通过下行物理控制信道进行发送，该下行物理控制信道可以是LTE系统中的PDCCH，也可以是未来网络中实现相应下行物理控制功能的其它名称的信道，具体功能及演进可参考相应标准中的描述。该指示消息中，包括网络侧设备的发送天线端 口的QCL信息(例如现有标准中物理层控制消息中的PQI域)，当终端设备接收到n个该类信令或消息，n为大于等于2的整数，且不同信令或消息中包含的天线端口的QCL信息不同，则可以隐式得知，当前有n个网络侧设备共同向该终端设备进行数据发送。需要说明的是，在第一网络侧设备向终端设备发送第一指示信息和第二网络侧设备向终端设备发送第二指示信息之前，第一网络设备可以向终端设备发送配置信息，指示终端设备去接收n个所述包括网络侧设备的发送天线端口的QCL信息(例如现有标准中物理层控制消息中的PQI域)的指示信息。
可选的，第一网络侧设备向终端设备发送第一指示信息，第二网络侧设备向终端设备发送第二指示信息，所述第一指示信息用于指示第一网络侧设备使用的第一天线端口集合中的天线端口信息以及对应的QCL信息，所述第二指示信息用于指示第二网络侧设备使用的第二天线端口集合中的天线端口信息以及对应的QCL信息，由所述第一指示信息和第二指示信息，可以使终端设备隐式的确定第一网络侧设备和第二网络侧设备向终端设备进行共同传输，这种隐式指示所需的第一指示信息和第二指示信息也可以对应步骤101中的向终端设备发送的指示信息。需要说明的是，在第一网络侧设备向终端设备发送第一指示信息和第二网络侧设备向终端设备发送第二指示信息之前，第一网络设备可以向终端设备发送配置信息，指示终端设备去接收大于一个的所述用于指示网络侧设备使用的天线端口集合中的天线端口信息以及对应的QCL信息的指示信息。
需要说明的是，对于如图1a所示的通信系统，第一网络侧设备还可以向第二网络侧设备发送指示信息，以指示第二网络侧设备进行共同传输。对于如图1b所示的通信系统，第一网络侧设备可以不向第二网络侧设备发送这样的指示信息，因为可以由集中调度器进行直接指示。
接下来，第一网络侧设备执行步骤102，即将需要共同传输的数据中需要自身发送的数据通过第一天线端口集合中的(全部或部分，例如根据传输的数据确定)天线端口发送给终端设备。
具体的，在LTE中，下行物理共享信道的处理流程包括：每个码字独立加扰、调制、层映射、预编码、资源元素RE映射、正交频分复用(英文：Orthogonal Frequency Multiple，简称：OFDM)符号生成。在本实施例中，多个非准共址的网络侧设备可以共同向单个终端设备发送数据，来自非QCL网络侧设备的信号对应的天线端口不同，在步骤101中，第一网络侧设备已经向终端设备发送了天线端口分配结果，相应的，在实际的物理信道处理中，层映射部分(包括端口映射)需要进行相应的修改。
例如对应于多流传输，第一网络侧设备将需要共同传输的数据的多个码字中的部分码字映射到第一天线端口集合中的天线端口上，并发送所述映射到所述第一天线端口集合中的天线端口上的所述部分码字。举例来说，假设PQI指示两组QCL参数，第一天线端口集合为{7、8}，第二天线端口集合为{9、10}，那么第一网络侧设备将码字0映射到端口7或8上，并将映射到端口7或8上的码字0发送出去，而码字1映射到第二天线端口集合中的端口9或10上，并将映射到端口9或10的码字1发送出去。
再例如分集传输的情况下，第一网络侧设备将分集传输的一路信号映射到所述第一天线端口集合中的天线端口上并发送映射到所述天线端口上的所述一路信号。
举例来说，假设服务基站和协作基站共同进行空频块编码(英文：Space Frequency Block Coding，简称：SFBC)发送，服务基站使用服务基站QCL参数配置的第一天线端 口集合中的一个端口(如端口7)发送SFBC的一路信号，协作基站使用协作基站QCL参数配置的第二天线端口集合中的一个端口(如端口9)发送SFBC的另外一路信号。
需要说明的是，第一网络侧设备和第二网络侧设备各自需要发送的数据是什么，可以是协议约定好的，例如第一网络侧设备发送码字0，而第二网络侧设备发送码字1，或者正好相反。
因此，第一网络侧设备和第二网络侧设备在同一时域符号传输的数据可以是相同的码字，也可以是独立的不同的码字。
另外，至于使用天线端口集合中的哪些端口进行端口映射，也可以按照约定规定进行发送，例如按照端口集合中端口的大小顺序选取，一层就选第一个端口，两层就选前两个端口。
当然，在实际运用中，也可以是第一网络侧设备和/或第二网络侧设备将码字映射的端口号通知给终端设备。具体的通知方法本发明实施例不做限定。
例如，可以通过物理层消息或者MAC CE等显示的通知终端设备第一网络侧设备和第二网络侧设备进行数据传输时使用的天线端口集合信息和/或使用的天线端口号信息，结合扩展的PQI指示的天线端口集合信息，终端设备即可以得到当前传输时第一网络侧设备和第二网络侧设备使用的天线端口信息以及对应的QCL信息。所述物理层消息或者MAC CE等显示的通知消息，可以由第一网络侧设备和/或第二网络侧设备向终端设备进行发送。
再例如，可以通过物理层消息或者MAC CE等通知终端设备第一网络侧设备和第二网络侧设备进行数据传输时使用的天线端口集合信息和/或使用的天线端口信息，其中使用的天线端口信息可以通过指示的层信息以及层到端口的映射关系隐式获得，或者可以通过显示的指示天线端口信息。然后针对每一个天线端口集合信息和/或使用的天线端口信息，分别指示其对应的QCL信息，该每个QCL信息指示域可以与当前LTE中的PQI信息域相同。所述物理层消息或者MAC CE等通知消息，可以由第一网络侧设备和/或第二网络侧设备向终端设备进行发送。
对于第二网络侧设备而言，执行的数据传输方法包括以下步骤：第二网络侧设备获得协作指示；所述协作指示用于指示所述第二网络侧设备在同一时域符号向终端设备发送数据；第二网络侧设备获取预先得到的第二天线端口集合；第二天线端口集合中包含至少一个天线端口；第二网络侧设备将需要自身发送的数据映射到所述第二天线端口集合中的天线端口并发送映射到所述天线端口的所述需要自身发送的数据。
其中，第二网络侧设备获得协作指示，可以是由第一网络侧设备发送的，也可以是由集中调度器直接指示的。
预先得到第二天线端口集合方式可以参考前述第一种至第四种的描述，即可以是集中调度器指示的，也可以是第一网络侧设备指示的，也可以是预先配置的，也可以是自己根据第一天线端口确定的。
而第二网络侧设备具体发送数据的方式与第一网络侧设备相同，已在前述详细描述过，所以在此不再赘述。
对于终端设备而言，其数据传输方法包括以下步骤：终端设备接收第一网络侧设备和/或第二网络侧设备发送的指示信息；所述指示信息用于指示第一网络侧设备和第二网络侧设备将在同一时域符号向所述终端设备发送数据；终端设备根据指示信息接收第一网络侧设备发送的第一部分数据和第二网络侧设备发送的第二部分数据。
可选的，终端设备还根据预先获得的第一网络侧设备发送第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调第一部分数据；以及，根据预先获得的第二网络侧设备发送第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调第二部分数据。其中，第一天线端口和第二天线端口不相同。
其中，指示信息已在前文中描述，所以在此不再赘述。
可选的，在多点多流传输时，第一部分数据和第二部分数据可以是不相关的独立码字。独立码字对应独立的调制编码方式(英文：Modulation and Coding Scheme，简称：MCS)。发射分集传输的时候，两个网络侧设备发送相同的码字，对应相同的MCS。
可选的，预先获得第一天线端口和第二天线端口，可以分别是由第一网络侧设备和第二网络侧设备通知的，也可以是终端设备接收第一网络侧设备发送的天线端口分配结果；所述端口分配结果包括第一网络侧设备所使用的第一天线端口集合和第二网络侧设备所使用的第二天线端口集合；终端设备可以按照约定规则得知第一天线端口是第一解调参考信号集合中的哪个端口，以及第二天线端口是第二天线端口集合中的哪个端口。
进一步，终端设备根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信号以及与所述第二天线端口对应的所述第二解调参考信号。
根据解调参考信号进行信道估计并根据信道估计结果进行数据解调，为本领域技术人员所熟知的内容，所以在此不再赘述。
由以上描述可以看出，在本发明实施例的方案中，第一网络侧设备使用的第一天线端口集合，第二网络侧设备使用第二天线端口集合，并且进一步第一网络侧设备向终端设备和/或第二网络侧设备发送用于指示共同传输的指示信息，所以终端设备可以正确的进行数据解调，所以本发明实施例的方案可以支持非QCL的第一网络侧设备和第二网络侧设备共同向终端设备进行数据传输。
基于第一网络侧设备与第二网络侧设备分别向终端设备发送指示信息的方案，本发明实施例还提供了一种数据传输的方法，其包括以下步骤：
终端设备接收第一网络侧设备发送的第一指示信息以及第二网络侧设备发送的第二指示信息，所述第一指示信息用于指示所述第一网络侧设备使用的第一天线端口集合的天线端口信息以及其对应的QCL信息，所述第二指示信息用于指示所述第二网络侧设备使用的第二天线端口集合的天线端口信息以及其对应的QCL信息；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；所述终端设备根据所述第一天线端口集合的天线端口信息以及其对应的QCL信息和所述第二天线端口集合的天线端口信息以及其对应的QCL信息，接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据。
其中，第一指示信息和第二指示信息已在前文中描述，所以在此不再赘述。
可选的，所述终端设备根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据；其中，所述第一天线端口和所述第二天线端口不相同，所述第一天线端口为所述第一天线端口集合中全部或部分天线端口，所述第二天线端口为所述第二天线端口 集合中的全部或部分天线端口。
可选的，所述终端设备根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信息和与所述第二天线端口对应的第二解调参考信号。
根据解调参考信号进行信道估计并根据信道估计结果进行数据解调，为本领域技术人员所熟知的内容，所以在此不再赘述。
基于同一发明构思，本发明实施例还提供一种装置(如图2所示)，该装置用于实现前述方法中的任意一种方法。
当该装置为网络侧设备，例如前述第一网络侧设备时，处理器10，用于获得指示信息并将需要自身发送的数据映射到第一天线端口集合中的天线端口；所述指示信息用于指示所述网络侧设备和第二网络侧设备将共同向所述终端设备发送数据；发送器20，用于向终端设备发送所述指示信息，以及将映射到所述天线端口的所述需要自身发送的数据发送给所述终端设备；第一天线端口集合中的天线端口和第二网络侧设备所使用的第二天线端口集合中的天线端口不完全相同。
可选的，发送器20还用于在向终端设备发送指示信息之前，向终端设备发送天线端口分配结果；所述天线端口分配结果用于指示第一天线端口集合和/或第二天线端口集合。
可选的，发送器20还用于向所述第二网络侧设备发送通知信息，所述通知信息用于通知所述第二网络侧设备，所述第二网络侧设备所使用的所述第二天线端口集合或所述第一天线端口集合。
可选的，所述通知信息包括天线端口索引项，所述天线端口索引项的大小为N比特，其中，第i个比特为0，表示所述第二网络侧设备或所述网络侧设备支持的天线端口中第i个天线端口没有被配置，第i个比特为1表示所述第二网络侧设备或所述网络侧设备支持的天线端口中第i个天线端口被配置，i取值为0至N-1间的整数，N为正整数。
可选的，发送器20用于通过高层信令向所述终端设备发送所述天线端口分配结果。
可选的，发送器20用于通过高层信令中的物理下行共享信道映射和准共址QCL配置信息元素向所述终端设备发送所述天线端口分配结果。
可选的，所述指示信息包括物理下行共享信道资源元素映射以及准共址指示PQI，所述PQI的域值由比特数大于2的比特表示。
可选的，处理器10用于将需要共同传输的数据的多个码字中的部分码字映射到所述第一天线端口集合中的天线端口上并通过发送器20发送所述映射到所述第一天线端口集合中的天线端口上的所述部分码字；或将分集传输的一路信号映射到所述第一天线端口集合中的天线端口上并通过发送器20发送映射到所述天线端口上的所述一路信号。
可选的，第一天线端口集合和所述第二天线端口集合中的天线端口还用于传输解调参考信号，且使用发送所述数据的端口传输解调所述数据用的解调参考信号。
当该装置为另一种网络侧设备，例如前述的第二网络侧设备时，接收器30，用于接收协作指示；所述协作指示用于指示所述网络侧设备与第一网络侧设备共同向终端设备发送数据；处理器10，用于将需要自身发送的数据映射到第二天线端口集合中的天线端口；第二天线端口集合中包含至少一个天线端口；其中，所述至少一个天线端口与第一网络侧设备所使用的第一天线端口集合中的天线端口不完全相同；发送器20，用于将映射到所述天线端口的所述需要自身发送的数据发送给所述终端设备。
可选的，处理器10用于通过接收器30从所述第一网络侧设备接收第二天线端口集合。
当该装置为终端设备时，接收器30，用于接收第一网络侧设备发送的指示信息；所述指示信息用于指示所述第一网络侧设备和第二网络侧设备将共同向所述终端设备发送数据；所述第一网络侧设备为所述终端设备所接入的网络侧设备；以及接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据；处理器10用于根据所述指示信息接收所述第一部分数据和所述第二部分数据。
可选的，处理器10还用于根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据。其中，所述第一天线端口和所述第二天线端口不相同。
可选的，接收器30还用于接收所述第一网络侧设备发送的天线端口分配结果；所述端口分配结果包括所述第一网络侧设备所使用的第一天线端口集合和所述第二网络侧设备所使用的第二天线端口集合；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；所述第一天线端口为所述第一天线端口集合中的天线端口，所述第二天线端口为所述第二天线端口集合中的天线端口；处理器10用于根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信号以及与所述第二天线端口对应的所述第二解调参考信号。
当该装置为终端设备时，接收器30，用于接收第一网络侧设备发送的第一指示信息以及第二网络侧设备发送的第二指示信息，所述第一指示信息用于指示所述第一网络侧设备使用的第一天线端口集合的天线端口信息以及其对应的QCL信息，所述第二指示信息用于指示所述第二网络侧设备使用的第二天线端口集合的天线端口信息以及其对应的QCL信息；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；处理器10用于根据所述第一天线端口集合的天线端口信息以及其对应的QCL信息和所述第二天线端口集合的天线端口信息以及其对应的QCL信息，接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据。
可选的，处理器10还用于根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据；其中，所述第一天线端口和所述第二天线端口不相同，所述第一天线端口为所述第一天线端口集合中全部或部分天线端口，所述第二天线端口为所述第二天线端口集合中的全部或部分天线端口。
可选的，处理器10还用于根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信息和与所述第二天线端口对应的第二解调参考信号。
基于同一发明构思，本发明实施例还提供一种数据传输装置，该数据传输装置包括用于执行前述方法步骤的功能模块。
前述实施例中的数据传输方法中的各种变化方式和具体实例同样适用于本实施例的数据传输装置以及图2中的装置，通过前述对数据传输方法的详细描述，本领域技术人员可以清楚的知道本实施例中数据传输装置以及图2中的装置的实施方法，所以为了说明书 的简洁，在此不再详述。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (34)

  1. 一种数据传输方法，其特征在于，包括：
    第一网络侧设备向终端设备发送指示信息，所述指示信息用于指示所述第一网络侧设备和第二网络侧设备将共同向所述终端设备发送数据；
    所述第一网络侧设备将需要自身发送的数据映射到第一天线端口集合中的全部或部分天线端口上并发送映射到所述天线端口上的所述需要自身发送的数据；其中，所述第一天线端口集合中的天线端口和所述第二网络侧设备所使用的第二天线端口集合中的天线端口不完全相同。
  2. 如权利要求1所述的方法，其特征在于，在所述第一网络侧设备向终端设备发送指示信息之前，所述方法还包括：
    所述第一网络侧设备向所述终端设备发送天线端口分配结果；其中，所述天线端口分配结果用于指示所述第一天线端口集合和/或所述第二天线端口集合。
  3. 如权利要求1或2所述的方法，其特征在于，在所述第一网络侧设备向终端设备发送指示信息之前，所述方法还包括：
    所述第一网络侧设备向所述第二网络侧设备发送通知信息，所述通知信息用于通知所述第二网络侧设备，所述第二网络侧设备所使用的所述第二天线端口集合或所述第一天线端口集合。
  4. 如权利要求3所述的方法，其特征在于，所述通知信息包括天线端口索引项，所述天线端口索引项的大小为N比特，其中，第i个比特为0，表示所述第二网络侧设备或所述第一网络侧设备支持的天线端口中第i个天线端口没有被配置，第i个比特为1表示所述第二网络侧设备或所述第一网络侧设备支持的天线端口中第i个天线端口被配置，i取值为0至N-1间的整数，N为正整数。
  5. 如权利要求2-4任一项所述的方法，其特征在于，所述第一网络侧设备向所述终端设备发送天线端口分配结果，包括：
    所述第一网络侧设备通过高层信令向所述终端设备发送所述天线端口分配结果。
  6. 如权利要求5所述的方法，其特征在于，所述第一网络侧设备通过高层信令向所述终端设备发送天线端口分配结果，包括：
    所述第一网络侧设备通过高层信令中的物理下行共享信道映射和准共址QCL配置信息元素向所述终端设备发送所述天线端口分配结果。
  7. 如权利要求1-6任一项所述的方法，其特征在于，所述指示信息包括物理下行共享信道资源元素映射以及准共址指示PQI，所述PQI的域值由比特数大于2的比特表示。
  8. 如权利要求1-7任一项所述的方法，其特征在于，所述第一网络侧设备将需要自身发送的数据映射到第一天线端口集合中的天线端口上并发送映射到所述天线端口上的所述需要自身发送的数据，包括：
    所述第一网络侧设备将需要共同传输的数据的多个码字中的部分码字映射到所述第一天线端口集合中的天线端口上并发送映射到所述天线端口上的所述部分码字；或
    所述第一网络侧设备将分集传输的一路信号映射到所述第一天线端口集合中的天线端口上并发送映射到所述天线端口上的所述一路信号。
  9. 如权利要求1-8任一项所述的方法，其特征在于，所述第一天线端口集合和所述第 二天线端口集合中的天线端口还用于传输解调参考信号，且使用发送所述数据的端口传输解调所述数据用的解调参考信号。
  10. 一种数据传输方法，其特征在于，包括：
    第二网络侧设备获得协作指示；所述协作指示用于指示所述第二网络侧设备与第一网络侧设备共同向所述终端设备发送数据；
    所述第二网络侧设备获取预先得到的第二天线端口集合；第二天线端口集合中包含至少一个天线端口；其中，所述至少一个天线端口与所述第一网络侧设备所使用的第一天线端口集合中的天线端口不完全相同；
    所述第二网络侧设备将需要自身发送的数据映射到所述第二天线端口集合中的全部或部分天线端口并发送映射到所述天线端口的所述需要自身发送的数据。
  11. 如权利要求10所述的方法，其特征在于，所述第二网络侧设备获取预先得到的第二天线端口集合，包括：
    所述第二网络侧设备获取从所述第一网络侧设备接收的第二天线端口集合。
  12. 一种数据传输方法，其特征在于，包括：
    终端设备接收第一网络侧设备发送的指示信息；所述指示信息用于指示所述第一网络侧设备和第二网络侧设备将共同向所述终端设备发送数据；
    所述终端设备根据所述指示信息接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据。
  13. 如权利要求12所述的方法，其特征在于，所述方法还包括：
    所述终端设备根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据；其中，所述第一天线端口和所述第二天线端口不相同。
  14. 如权利要求12或13所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收所述第一网络侧设备发送的天线端口分配结果；所述天线端口分配结果包括所述第一网络侧设备所使用的第一天线端口集合和所述第二网络侧设备所使用的第二天线端口集合；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；所述第一天线端口为所述第一天线端口集合中的全部或部分天线端口，所述第二天线端口为所述第二天线端口集合中的全部或部分天线端口；
    所述终端设备根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信号以及与所述第二天线端口对应的所述第二解调参考信号。
  15. 一种数据传输方法，其特征在于，包括：
    终端设备接收第一网络侧设备发送的第一指示信息以及第二网络侧设备发送的第二指示信息，所述第一指示信息用于指示所述第一网络侧设备使用的第一天线端口集合的天线端口信息以及其对应的准共址QCL信息，所述第二指示信息用于指示所述第二网络侧设备使用的第二天线端口集合的天线端口信息以及其对应的QCL信息；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；
    所述终端设备根据所述第一天线端口集合的天线端口信息以及其对应的QCL信息和所述第二天线端口集合的天线端口信息以及其对应的QCL信息，接收所述第一网络侧设 备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据。
  16. 如权利要求15所述的方法，其特征在于，所述方法还包括：
    所述终端设备根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据；其中，所述第一天线端口和所述第二天线端口不相同，所述第一天线端口为所述第一天线端口集合中全部或部分天线端口，所述第二天线端口为所述第二天线端口集合中的全部或部分天线端口。
  17. 如权利要求15或16所述的方法，其特征在于，所述方法还包括：
    所述终端设备根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信息和与所述第二天线端口对应的第二解调参考信号。
  18. 一种网络侧设备，其特征在于，包括：
    处理器，用于获得指示信息并将需要自身发送的数据映射到第一天线端口集合中的全部或部分天线端口；所述指示信息用于指示所述网络侧设备和第二网络侧设备将共同向终端设备发送数据；其中，所述第一天线端口集合中的天线端口和所述第二网络侧设备所使用的第二天线端口集合中的天线端口不完全相同；
    发送器，用于向所述终端设备发送所述指示信息，以及将映射到所述天线端口的所述需要自身发送的数据发送给所述终端设备。
  19. 如权利要求18所述的网络侧设备，其特征在于，所述发送器还用于：在向所述终端设备发送所述指示信息之前，向所述终端设备发送天线端口分配结果；其中，所述天线端口分配结果用于指示所述第一天线端口集合和/或所述第二天线端口集合。
  20. 如权利要求18或19所述的网络侧设备，其特征在于，所述发送器还用于向所述第二网络侧设备发送通知信息，所述通知信息用于通知所述第二网络侧设备，所述第二网络侧设备所使用的所述第二天线端口集合或所述第一天线端口集合。
  21. 如权利要求20所述的网络侧设备，其特征在于，所述通知信息包括天线端口索引项，所述天线端口索引项的大小为N比特，其中，第i个比特为0，表示所述第二网络侧设备或所述网络侧设备支持的天线端口中第i个天线端口没有被配置，第i个比特为1表示所述第二网络侧设备或所述网络侧设备支持的天线端口中第i个天线端口被配置，i取值为0至N-1间的整数，N为正整数。
  22. 如权利要求19-21任一项所述的网络侧设备，其特征在于，所述发送器用于通过高层信令向所述终端设备发送所述天线端口分配结果。
  23. 如权利要求22所述的网络侧设备，其特征在于，所述发送器用于通过高层信令中的物理下行共享信道映射和准共址QCL配置信息元素向所述终端设备发送所述天线端口分配结果。
  24. 如权利要求19-23任一项所述的网络侧设备，其特征在于，所述指示信息包括物理下行共享信道资源元素映射以及准共址指示PQI，所述PQI的域值由比特数大于2的比特表示。
  25. 如权利要求19-24任一项所述的网络侧设备，其特征在于，所述处理器用于将需要共同传输的数据的多个码字中的部分码字映射到所述第一天线端口集合中的天线端口 上并通过所述发送器发送映射到所述第一天线端口集合中的天线端口上的所述部分码字；或将分集传输的一路信号映射到所述第一天线端口集合中的天线端口上并通过所述发送器发送映射到所述天线端口上的所述一路信号。
  26. 一种网络侧设备，其特征在于，包括：
    接收器，用于接收协作指示；所述协作指示用于指示所述网络侧设备与第一网络侧设备共同向终端设备发送数据；
    处理器，用于将需要自身发送的数据映射到第二天线端口集合中的全部或部分天线端口；第二天线端口集合中包含至少一个天线端口；其中，所述至少一个天线端口与所述第一网络侧设备所使用的第一天线端口集合中的天线端口不完全相同；
    发送器，用于将映射到所述天线端口的所述需要自身发送的数据发送给所述终端设备。
  27. 如权利要求26所述的网络侧设备，其特征在于，所述处理器用于通过所述接收器从所述第一网络侧设备接收第二天线端口集合。
  28. 一种终端设备，其特征在于，包括：
    接收器，用于接收第一网络侧设备发送的指示信息；所述指示信息用于指示所述第一网络侧设备和第二网络侧设备将共同向所述终端设备发送数据；以及接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据；
    处理器，用于根据所述指示信息接收所述第一部分数据和所述第二部分数据。
  29. 根据权利要求28所述的终端设备，其特征在于，
    所述处理器，还用于根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据；其中，所述第一天线端口和所述第二天线端口不相同。
  30. 如权利要求28或29所述的终端设备，其特征在于，所述接收器还用于接收所述第一网络侧设备发送的天线端口分配结果；所述端口分配结果包括所述第一网络侧设备所使用的第一天线端口集合和所述第二网络侧设备所使用的第二天线端口集合；所述第一天线端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；所述第一天线端口为所述第一天线端口集合中的全部或部分天线端口，所述第二天线端口为所述第二天线端口集合中的全部或部分天线端口；
    所述处理器用于根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信号以及与所述第二天线端口对应的所述第二解调参考信号。
  31. 如权利要求28-30中任一项所述的终端设备，其特征在于，所述指示信息包括物理下行共享信道资源元素映射以及准共址指示PQI，所述PQI的域值由比特数大于2的比特表示。
  32. 一种终端设备，其特征在于，包括：
    接收器，用于接收第一网络侧设备发送的第一指示信息以及第二网络侧设备发送的第二指示信息，所述第一指示信息用于指示所述第一网络侧设备使用的第一天线端口集合的天线端口信息以及其对应的准共址QCL信息，所述第二指示信息用于指示所述第二网络侧设备使用的第二天线端口集合的天线端口信息以及其对应的QCL信息；所述第一天线 端口集合中的天线端口和所述第二天线端口集合中的天线端口不完全相同；
    处理器，用于根据所述第一天线端口集合的天线端口信息以及其对应的QCL信息和所述第二天线端口集合的天线端口信息以及其对应的QCL信息，接收所述第一网络侧设备发送的第一部分数据和所述第二网络侧设备发送的第二部分数据。
  33. 如权利要求32所述的终端设备，其特征在于，所述处理器，还用于根据预先获得的所述第一网络侧设备发送所述第一部分数据所使用的第一天线端口发送的第一解调参考信号进行信道估计并根据信道估计结果解调所述第一部分数据；以及，根据预先获得的所述第二网络侧设备发送所述第二部分数据所使用的第二天线端口发送的第二解调参考信号进行信道估计并根据信道估计结果解调所述第二部分数据；其中，所述第一天线端口和所述第二天线端口不相同，所述第一天线端口为所述第一天线端口集合中全部或部分天线端口，所述第二天线端口为所述第二天线端口集合中的全部或部分天线端口。
  34. 如权利要求32或33所述的终端设备，其特征在于，所述处理器，还用于根据天线端口与解调参考信号的对应关系，确定与所述第一天线端口对应的所述第一解调参考信息和与所述第二天线端口对应的第二解调参考信号。
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US10972171B2 (en) 2021-04-06
CA3019444A1 (en) 2017-10-05
EP3429293B1 (en) 2021-03-03
CN107302796B (zh) 2023-04-18
CN109076526B (zh) 2021-03-30
CN107302796A (zh) 2017-10-27
CA3019444C (en) 2023-03-07
US20190036589A1 (en) 2019-01-31
BR112018070173A2 (pt) 2019-01-29
JP2019512983A (ja) 2019-05-16
KR102143870B1 (ko) 2020-08-12
CN109076526A (zh) 2018-12-21
KR20180126048A (ko) 2018-11-26

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