WO2018126854A1 - 一种上行传输方法、终端、网络侧设备 - Google Patents

一种上行传输方法、终端、网络侧设备 Download PDF

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Publication number
WO2018126854A1
WO2018126854A1 PCT/CN2017/115662 CN2017115662W WO2018126854A1 WO 2018126854 A1 WO2018126854 A1 WO 2018126854A1 CN 2017115662 W CN2017115662 W CN 2017115662W WO 2018126854 A1 WO2018126854 A1 WO 2018126854A1
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Prior art keywords
uplink transmission
uplink
terminal
signal
frequency resource
Prior art date
Application number
PCT/CN2017/115662
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English (en)
French (fr)
Inventor
吴艺群
徐修强
陈雁
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020197022748A priority Critical patent/KR20190102055A/ko
Priority to EP17889924.1A priority patent/EP3557924B1/en
Publication of WO2018126854A1 publication Critical patent/WO2018126854A1/zh
Priority to US16/503,589 priority patent/US11147047B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044Arrangements for allocating sub-channels of the transmission path allocation of payload
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0038Blind format detection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/2605Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1263Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/51Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/53Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the present application relates to the field of wireless communications technologies, and in particular, to an uplink transmission method, a terminal, and a network side device.
  • the terminal Before transmitting an uplink signal, the terminal first needs to establish a Radio Resource Control (RRC) connection with the base station, enter a RRC connection state, and then Send a Scheduling Request (SR) to the base station. If the base station allows the terminal to send an uplink signal, the base station sends an authorization command to the terminal. After receiving the authorization command, the terminal can send an uplink signal to the base station according to the command requirement. This method of transmitting uplink signals is called an authorized transmission.
  • RRC Radio Resource Control
  • SR Scheduling Request
  • Authorized transmission has two disadvantages.
  • One is that the delay is relatively large.
  • the delay here refers to the delay from the terminal to determine that there is an uplink signal to be sent to the terminal to send data from the air interface;
  • another disadvantage is that when a certain time
  • the resource consumption of the uplink and downlink control channel for sending the scheduling request and the authorization will be very large, and the control overhead accounts for a high proportion of the total network overhead (such as power, air interface resources, etc.).
  • the disadvantage of authorized transmission is particularly obvious.
  • the basic idea of the unlicensed transmission is that the data is “on the go”, that is, when the terminal determines that there is an uplink signal to be transmitted, it does not have to go through the process of sending an uplink scheduling request and waiting for the authorization of the receiving base station, but directly processing the data. Then sent to the base station. Compared with the authorized transmission scheme scheduled by the base station, the unlicensed transmission does not need to send the uplink scheduling request and wait for the authorization of the receiving base station, which can shorten the transmission delay and meet the delay requirement.
  • the present application describes an uplink transmission method, a terminal, and a network side device.
  • the uplink-side transmission time-frequency resources allocated by the network-side device to the terminal have different forms, such as full-downlink, full-uplink, downlink-based, and uplink-based, so that the network-side device can perform flexible resource allocation for the terminal.
  • the application provides an uplink transmission method performed by the terminal, including:
  • the network side device pre-configures the uplink transmission time-frequency resource for the terminal, and the terminal locally saves the uplink transmission time-frequency resource.
  • the terminal needs to send an uplink signal, it is not required to request the network side device to reschedule the uplink transmission time-frequency resource, and directly determine the uplink to be transmitted according to the number of orthogonal frequency division multiplexing OFDM symbols in the locally stored uplink transmission time-frequency resource. Signal and send to the network side device.
  • the uplink transmission method provided by the present application is used to determine the uplink signal of the corresponding uplink transmission for the number of OFDM symbols occupied by different uplink transmission time-frequency resources, and may be locally preset by the terminal or sent by the network side device in different manners.
  • the terminal provides a solution for performing unlicensed transmission for different uplink transmission time-frequency resources, thereby ensuring the effect of unauthorized transmission and effectively improving communication performance.
  • the specific composition and content of the uplink signal generated by the terminal are different, and are determined by the correspondence between the number of OFDM symbols and the uplink signal to be transmitted.
  • the correspondence between the number of at least one OFDM symbol and the uplink signal to be transmitted is preset locally by the terminal.
  • the correspondence between the number of at least one OFDM symbol and the uplink signal to be transmitted is sent by the network side device to the terminal.
  • the correspondence also includes:
  • the uplink transmission indication is sent to the terminal, where the uplink transmission indication carries the medium and downlink control message. It can also be sent to the terminal in the form of a table.
  • the correspondence between the number of OFDM symbols indicated by the terminal local preset or the network side device, the bandwidth that can be used by the terminal for uplink transmission, and the uplink signal to be transmitted are as follows:
  • the corresponding uplink signal to be transmitted is: a reference signal
  • the corresponding uplink signals to be transmitted are: a reference signal and a control signal;
  • Corresponding uplink signals to be transmitted are: reference signals and data signals;
  • the corresponding uplink signals to be transmitted are: a reference signal, a control signal, and a data signal;
  • N 1 ⁇ N n are positive integers.
  • the number of OFDM symbols is classified according to a certain range of values, and the number of OFDM symbols of one type corresponds to one type of uplink signal, and when the terminal locally stores the correspondence, the storage resources can be saved.
  • the network side device sends the corresponding relationship to the terminal, since the number of OFDM symbols in a certain numerical range is classified, signaling resources can be saved.
  • the corresponding uplink signal to be transmitted is: a reference signal
  • the corresponding uplink signals to be transmitted are: a reference signal and a control signal;
  • Corresponding uplink signals to be transmitted are: reference signals and data signals;
  • Corresponding uplink signals to be transmitted are: reference signals and data signals;
  • Corresponding uplink signals to be transmitted are: reference signals and data signals;
  • Corresponding uplink signals to be transmitted are: reference signals and data signals;
  • Corresponding uplink signals to be transmitted are: transmitting reference signals, control signals and data signals;
  • the corresponding uplink signals to be transmitted are: a reference signal, a control signal, and a data signal;
  • N 1 ⁇ N n are positive integers.
  • each OFDM symbol number corresponds to an uplink signal, so that the terminal can more accurately search for the corresponding uplink signal according to the OFDM symbol number of the uplink transmission time-frequency resource.
  • the table implementation form of the correspondence between the number of OFDM symbols, the bandwidth that can be used by the terminal for uplink transmission, and the uplink signal to be transmitted is as follows:
  • the type x indicates that the uplink signal sent by the transceiver includes any one of the following four types:
  • the application provides another uplink transmission method performed by a terminal, including:
  • the terminal stores an uplink transmission time-frequency resource and an uplink transmission indication allocated by the network side device;
  • the terminal transmits an uplink signal on the determined uplink transmission time-frequency resource.
  • the uplink transmission of the uplink transmission indication may be according to the number of OFDM symbols of the uplink transmission time-frequency resource that it has.
  • the uplink transmission is performed on the time-frequency resource. Therefore, the network-side device can perform targeted detection on a specific time-frequency resource, and does not need to receive the uplink signal sent by the terminal by means of blind detection, thereby greatly improving the immunity.
  • the validity of the authorization transmission since the terminal pre-stores the uplink transmission time-frequency resource and the uplink transmission indication, when the uplink signal needs to be transmitted, the uplink transmission of the uplink transmission indication may be according to the number of OFDM symbols of the uplink transmission time-frequency resource that it has.
  • the uplink transmission is performed on the time-frequency resource. Therefore, the network-side device can perform targeted detection on a specific time-frequency resource, and does not need to receive the uplink signal sent by the terminal by means of blind detection, thereby greatly improving the immunity.
  • the validity of the authorization transmission since the terminal pre-stores the uplink transmission time-frequency resource and
  • the terminal receives an uplink transmission indication sent by the network side device, where the uplink transmission indicates that the uplink transmission time-frequency resource is used by the terminal to transmit an OFDM symbol ID and a subband in an uplink manner.
  • ID The terminal transmits the uplink signal on an uplink time-frequency resource corresponding to the OFDM symbol ID and the sub-band ID.
  • the network side device directly indicates to the terminal the OFDM symbol ID and the subband ID for uplink transmission, so the terminal can directly perform uplink transmission according to the OFDM symbol ID and the subband ID, thereby making the transmission more orderly and efficient.
  • the network side device can also detect on the corresponding time-frequency resource, thereby improving the uplink signal transmission efficiency.
  • the terminal receives an uplink transmission indication sent by the network side device, where The uplink transmission indicates the number of subbands and the number of subbands of the uplink transmission time-frequency resource;
  • the uplink signal is transmitted on an uplink time-frequency resource corresponding to the OFDM symbol ID and the sub-band ID.
  • the terminal since the network side device sends the number of subbands and the number of subbands to the terminal, the terminal calculates the OFDM symbol ID and the subband ID by itself, so the terminal does not depend on the indication of the network side device, and the transmission is more orderly and efficient.
  • the network side device can also detect on the corresponding time-frequency resource, thereby improving the uplink signal transmission efficiency.
  • the OFDM symbol ID and the subband ID are determined by the following formula:
  • N represents the number of subbands
  • K represents the subband interval
  • n s is the identifier of the OFDM symbol
  • n k is the ID of the terminal k.
  • the OFDM symbol ID and the subband ID are determined by the following formula:
  • b ki is the identifier of the subband allocated to the terminal k on the network side
  • N is the number of subbands
  • K is the subband spacing
  • n s is the identifier of the OFDM symbol
  • n k is the ID of the terminal k
  • n t is Gap number
  • c( ⁇ ) is The cell ID is a pseudo-random sequence of initial values.
  • the OFDM symbol ID and the sub-band ID can be calculated by using different formulas, and the time-frequency resources corresponding to the OFDM symbol ID and the sub-band ID are evenly distributed on the uplink transmission time-frequency resources allocated by the network side device for the terminal. Therefore, the terminal can transmit the uplink signal more efficiently and orderly, and can avoid collision of multiple terminals when performing unauthorized transmission.
  • the network side device performs signal detection on the time-frequency resource corresponding to the OFDM symbol ID and the sub-band ID, which is more efficient.
  • the embodiment of the present application provides an uplink transmission method, where the method is performed by a network side device, and includes:
  • the network side device sends an uplink transmission indication to the terminal;
  • the uplink transmission indication includes a correspondence between the number of the at least one OFDM symbol and an uplink signal to be transmitted;
  • the network side device receives an uplink signal determined by the terminal according to the uplink transmission indication.
  • the network side device configures, for the terminal, the correspondence between the number of orthogonal frequency division multiplexing OFDM symbols in the uplink transmission time-frequency resource and the uplink signal to be transmitted, and different time-frequency resources for different uplink transmissions.
  • the number of occupied OFDM symbols corresponds to different uplink signals, and the terminal may generate corresponding uplink signals according to the corresponding uplink transmission time-frequency resource OFDM symbol number, thereby providing exemption for different uplink transmission time-frequency resources.
  • the transmission solution can guarantee the effect of unauthorized transmission and effectively improve communication performance.
  • the embodiment of the present application provides another uplink transmission method performed by a network side device, including:
  • the network side device configures an uplink transmission time-frequency resource for the terminal; the uplink transmission time-frequency resource includes at least one OFDM symbol;
  • the network side device sends an uplink transmission indication to the terminal;
  • the uplink transmission indication is used to indicate the uplink a time-frequency resource in the transmission time-frequency resource that can be used by the terminal for uplink transmission;
  • the network side device receives an uplink signal sent by the terminal on the time-frequency resource that can be used by the terminal for uplink transmission.
  • the network side device configures the uplink transmission time-frequency resource and the uplink transmission indication for the terminal in advance, and the terminal may uplink according to the number of OFDM symbols of the uplink transmission time-frequency resource that the terminal needs to transmit when there is an uplink signal to be transmitted.
  • the uplink transmission on the uplink transmission time-frequency resource is transmitted, so that the transmission is more orderly, and the network side device can also detect on the corresponding time-frequency resource, thereby improving the uplink signal transmission efficiency.
  • the uplink transmission indication carries an OFDM symbol ID and a subband ID that can be used by the terminal for uplink transmission, where the terminal is uplinked by the OFDM symbol ID and the subband ID.
  • the uplink signal is transmitted on a frequency resource.
  • the uplink transmission indicates a number of subbands and a number of subbands that carry an uplink transmission time-frequency resource, so that the terminal is configured according to the number of subbands, the number of subbands, and the The number of OFDM symbols of the uplink transmission time-frequency resource, the OFDM symbol ID and the sub-band ID that are determined by the terminal for uplink transmission from the uplink transmission time-frequency resource, the terminal in the OFDM symbol ID and the The uplink signal is transmitted on an uplink time-frequency resource corresponding to the sub-band ID.
  • the ID and subband ID of the OFDM symbol are determined by the following formula:
  • N represents the number of subbands
  • K represents the subband interval
  • n s is the identifier of the OFDM symbol
  • n k is the ID of the terminal k.
  • the ID and subband ID of the OFDM symbol are determined by the following formula:
  • b ki is the identifier of the subband allocated to the terminal k on the network side
  • N is the number of subbands
  • K is the subband spacing
  • n s is the identifier of the OFDM symbol
  • n k is the ID of the terminal k
  • n t is Gap number
  • c( ⁇ ) is The cell ID is a pseudo-random sequence of initial values.
  • the embodiment of the present application provides a terminal.
  • the terminal has a function of implementing terminal behavior in the design of the above method.
  • the terminal may be a D2D (Device-to-Device) terminal or a cellular terminal.
  • the function of the terminal can be implemented by hardware, which includes a transceiver and a processor.
  • the corresponding software implementation can also be performed by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the modules can be software and/or hardware.
  • the terminal provided by the embodiment of the present application includes:
  • a memory for storing an uplink transmission time-frequency resource allocated by the network side device
  • a processor configured to determine, according to the number of orthogonal frequency division multiplexing OFDM symbols of the uplink transmission time-frequency resource saved by the memory, when the terminal needs to send an uplink signal, to determine an uplink signal to be transmitted;
  • transceiver configured to send, to the network side device, an uplink signal determined by the processor.
  • the terminal provided by the present application determines the uplink signal of the corresponding uplink transmission for the number of OFDM symbols occupied by different uplink transmission time-frequency resources, and may be locally preset by the terminal or sent to the terminal by the network side device in different manners. Therefore, an unlicensed transmission solution is provided for different uplink transmission time-frequency resources, which can ensure the effect of unauthorized transmission and effectively improve communication performance.
  • the terminal provided by the embodiment of the present application includes:
  • a memory configured to store an uplink transmission time-frequency resource and an uplink transmission indication allocated by the network side device, where the uplink transmission indication is used to indicate a time-frequency resource in the uplink transmission time-frequency resource that can be used by the terminal for uplink transmission;
  • a processor configured to determine, according to the OFDM symbol number of the uplink transmission time-frequency resource received by the transceiver, and an uplink transmission indication, from the saved uplink transmission time-frequency resource, to be used by the terminal Time-frequency resources for uplink transmission;
  • a transceiver configured to transmit an uplink signal on an uplink transmission time-frequency resource that is determined by the processor to be used by the terminal for uplink transmission.
  • the uplink transmission of the uplink transmission indication may be according to the number of OFDM symbols of the uplink transmission time-frequency resource that it has.
  • the uplink transmission is performed on the time-frequency resource, so that the transmission is more orderly, and the network side device can also detect on the corresponding time-frequency resource, thereby improving the uplink signal transmission efficiency.
  • the uplink transmission indication stored in the memory carries an OFDM symbol ID and a subband ID that can be used by the terminal for uplink transmission.
  • the uplink transmission stored in the memory indicates the number of subbands and the number of subbands carrying the uplink transmission time-frequency resource
  • the processor is further configured to determine, according to the number of subbands stored in the memory, the number of subbands, and the number of OFDM symbols of the uplink transmission time-frequency resource, from the uplink transmission time-frequency resource The OFDM symbol ID and subband ID used by the terminal for uplink transmission.
  • the ID and the subband ID of the OFDM symbol are determined by the following formula:
  • N represents the number of subbands
  • K represents the subband interval
  • n s is the identifier of the OFDM symbol
  • n k is the ID of the terminal k.
  • the OFDM symbol ID and the subband ID are determined by the following formula:
  • b ki is the identifier of the subband allocated to the terminal k on the network side
  • N is the number of subbands
  • K is the subband spacing
  • n s is the identifier of the OFDM symbol
  • n k is the ID of the terminal k
  • n t is Gap number
  • c( ⁇ ) is The cell ID is a pseudo-random sequence of initial values.
  • the embodiment of the present application provides a network side device, and the network side device may be a base station or a control node.
  • the network side device provided by the embodiment of the present application includes:
  • a processor configured to configure an uplink transmission time-frequency resource for the terminal, where the uplink transmission time-frequency resource includes at least one orthogonal frequency division multiplexing OFDM symbol;
  • a transceiver configured to send an uplink transmission indication and the uplink transmission time-frequency resource to the terminal, and receive an uplink signal determined by the terminal according to the uplink transmission indication;
  • the uplink transmission indication includes the at least one OFDM symbol number to be transmitted Correspondence between the uplink signals.
  • the network side device configures the orthogonal frequency division in the uplink transmission time-frequency resource for the terminal.
  • the number of OFDM symbols occupied by different uplink transmission time-frequency resources corresponds to different uplink signals, and the terminal may use the uplink transmission time-frequency resources according to the corresponding relationship.
  • the number of OFDM symbols generates a corresponding uplink signal, thereby providing a solution for performing unlicensed transmission for different uplink transmission time-frequency resources, thereby ensuring the effect of unauthorized transmission and effectively improving communication performance.
  • the network side device provided by the embodiment of the present application includes:
  • a processor configured to configure, for the terminal, an uplink transmission time-frequency resource, where the uplink transmission time-frequency resource includes at least one OFDM symbol;
  • a transceiver configured to send an uplink transmission indication to the terminal, where the uplink transmission indication is used to indicate a time-frequency resource in the uplink transmission time-frequency resource that can be used by the terminal for uplink transmission;
  • the transceiver is further configured to receive an uplink signal sent by the terminal on a time-frequency resource that can be used by the terminal for uplink transmission.
  • the network side device configures the uplink transmission time-frequency resource and the uplink transmission indication for the terminal in advance, and the terminal may uplink according to the number of OFDM symbols of the uplink transmission time-frequency resource that the terminal needs to transmit when there is an uplink signal to be transmitted.
  • the uplink transmission on the uplink transmission time-frequency resource is transmitted, so that the transmission is more orderly, and the network side device can also detect on the corresponding time-frequency resource, thereby improving the uplink signal transmission efficiency.
  • the uplink transmission sent by the transceiver to the terminal is an OFDM symbol ID and a sub-band ID of the uplink transmission time-frequency resource that can be used by the terminal for uplink transmission.
  • the uplink transmission sent by the transceiver to the terminal is the number of subbands and the number of subbands of the uplink transmission time-frequency resource.
  • the processor is further configured to determine the OFDM symbol ID and the subband ID by using the following formula:
  • N represents the number of subbands
  • K represents the subband interval
  • n s is the identifier of the OFDM symbol
  • n k is the ID of the terminal k.
  • the processor is further configured to determine the OFDM symbol ID and the subband ID by using the following formula:
  • b ki is the identifier of the subband allocated to the terminal k on the network side
  • N is the number of subbands
  • K is the subband spacing
  • n s is the identifier of the OFDM symbol
  • n k is the ID of the terminal k
  • n t is Gap number
  • c( ⁇ ) is The cell ID is a pseudo-random sequence of initial values.
  • the embodiment of the present application provides a base station, which has a function of realizing the behavior of the base station in the actual method.
  • the functions may be implemented by hardware or by corresponding software implemented by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the structure of the base station includes a processor and a transceiver configured to support the base station to perform the corresponding functions in the above methods.
  • the transceiver is configured to support communication between the base station and the terminal, and send information or signaling involved in the foregoing method to the terminal, and receive information or instructions sent by the base station.
  • the base station can also be packaged
  • a memory is provided for coupling with a processor that stores the necessary program instructions and data for the base station.
  • an embodiment of the present application provides a control node, which may include a controller/processor, a memory, and a communication unit.
  • the controller/processor may be used to coordinate resource management and configuration between multiple base stations, and may be used to perform a method for configuring a time-frequency resource for a terminal as described in the foregoing embodiments.
  • the memory can be used to store program code and data for the control node.
  • the communication unit is configured to support the control node to communicate with the base station, for example, to send information of the configured resource to the base station.
  • the embodiment of the present application provides a communication chip, including:
  • a signal transmitting and receiving circuit configured to receive and save an uplink transmission time-frequency resource allocated by the network side device
  • a memory for storing an uplink transmission time-frequency resource received by the signal transceiver circuit
  • the signal transceiver circuit is further configured to send the uplink signal determined by the processing circuit to the network side device.
  • the communications chip provided by the embodiment of the present application includes:
  • a signal transmitting and receiving circuit configured to receive an uplink transmission time-frequency resource and an uplink transmission indication allocated by the network side device, where the uplink transmission indication is used to indicate a time frequency of the uplink transmission time-frequency resource that can be used by the terminal for uplink transmission Resource
  • a memory configured to store an uplink transmission time-frequency resource and an uplink transmission indication received by the signal transceiver line;
  • a processing circuit when the terminal has an uplink signal to be transmitted, receiving, according to the signal transmission and reception circuit, an OFDM symbol number and an uplink transmission indication of the uplink transmission time-frequency resource from the saved uplink transmission time-frequency resource Determining a time-frequency resource that can be used by the terminal for uplink transmission;
  • the signal transceiving circuit is further configured to transmit an uplink signal on an uplink transmission time-frequency resource that is determined by the processing circuit to be used by the terminal for uplink transmission.
  • the embodiment of the present application provides a communication system, where the system includes the base station and the terminal in the foregoing aspect.
  • the control node in the foregoing embodiment may also be included.
  • the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the base station, which includes a program designed to perform the above aspects.
  • the embodiment of the present application provides a computer storage medium for storing computer software instructions used by the terminal, which includes a program designed to execute the above aspects.
  • Yet another aspect of the present application provides a computer readable storage medium having instructions stored therein that, when executed on a computer, cause the computer to perform the methods described in the above aspects.
  • Yet another aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods described in the various aspects above.
  • FIG. 1 is a schematic diagram of a scenario of a future network provided by the present application.
  • FIG. 2 is a schematic diagram of different subframe formats provided by the present application.
  • FIG. 3 is a structural diagram of a communication system provided by the present application.
  • FIG. 4 is a schematic diagram of an uplink transmission resource location configuration corresponding to different subframe formats provided by the present application
  • FIG. 5 is still another schematic diagram of an uplink transmission resource location configuration corresponding to different subframe formats provided by the present application
  • FIG. 6 is a schematic structural diagram of a network side device and a terminal provided by the present application.
  • FIG. 7 is a schematic flowchart diagram of Embodiment 1 of an uplink transmission method provided by the present application.
  • FIG. 8 is a schematic flowchart of Embodiment 2 of an uplink transmission method provided by the present application.
  • FIG. 9 is a schematic flowchart of Embodiment 3 of an uplink transmission method provided by the present application.
  • FIG. 10 is a schematic structural diagram of a terminal provided by the present application.
  • NGMN Next Generation Mobile Network
  • eMBB Enhanced Mobile Broadband
  • uRLLC Ultra-reliable and Low-latency Communications
  • mMTC massive Machine Type Communications
  • mMTC covers scenarios where high connection density is required, such as smart cities, smart agriculture, to meet people's needs for a digital society.
  • the typical feature of the scenario is that the connection is large, that is, the number of terminals is large, the service type is mainly small packet service, and there are certain requirements for low latency.
  • uRLLC focuses on services that are extremely sensitive to time delays, such as autonomous driving/assisted driving; for car networking, driverless, industrial control, etc., system capacity is not a major problem, but it has a lot of delay and reliability. High requirements.
  • the unlicensed transmission is considered to be a more suitable uplink signal transmission method than the authorized transmission.
  • the unlicensed transmission does not need to send the uplink scheduling request and wait for the authorization of the receiving base station, which greatly shortens the transmission delay and can meet the requirements in terms of delay.
  • the English of the license-free transmission is denoted as Grant Free, referred to as GF.
  • Grant Free referred to as GF.
  • the unauthorized transfer can also have other representations, such as Grantless. This article does not limit the meaning of the unauthorized transfer. It can be understood that the unauthorized transfer is not a proper term, but also in practical applications. Other names may be used, but they do not depart from the essence of this patent application.
  • the unlicensed transmission is usually for uplink signal transmission, which can be understood as any one or more of the following meanings, but is limited to these.
  • an unauthorized transfer may also be understood as a combination of some of the various technical features described below or other similar meanings:
  • the unlicensed transmission may be: the network side device pre-allocates and informs the terminal device of multiple transmission resources; when the terminal device has the uplink signal transmission requirement, select at least one transmission resource from the plurality of transmission resources pre-allocated by the network side device, and use The selected transmission resource sends an uplink signal; the network side device detects an uplink signal sent by the terminal device on one or more of the pre-assigned multiple transmission resources.
  • the detection may be blind detection, or may be performed according to one of the control fields of the uplink signal, or may be detected by other means.
  • the unlicensed transmission may be: the network side device pre-allocates and informs the terminal device of multiple transmission resources, so that when the terminal device has an uplink signal transmission requirement, at least one transmission resource is selected from a plurality of transmission resources pre-allocated by the network side device.
  • the uplink signal is sent using the selected transmission resource.
  • Unlicensed transmission may refer to: obtaining information of pre-assigned multiple transmission resources, which is required for uplink signal transmission. At the time of obtaining, at least one transmission resource is selected from the plurality of transmission resources, and an uplink signal is transmitted using the selected transmission resource. The obtained method can be obtained from the network side device.
  • the unlicensed transmission may be a method for realizing the uplink signal transmission of the terminal device without dynamic scheduling of the network side device, and the dynamic scheduling may refer to that the network side device uses signaling for each uplink signal transmission of the terminal device.
  • implementing uplink signal transmission of the terminal device may be understood as allowing data of two or more terminal devices to perform uplink signal transmission on the same time-frequency resource.
  • the transmission resource may be a transmission resource of one or more transmission time units after the moment when the terminal receives the signaling.
  • a transmission time unit may refer to a minimum time unit for one transmission, such as a TTI (Transmission Time Interval), the value may be 1 ms, or may be a preset transmission time unit.
  • Unlicensed transmission may refer to: the terminal device performs uplink signal transmission without requiring network side device authorization.
  • the authorization may be performed by the terminal device to send an uplink scheduling request to the network side device.
  • the network side device After receiving the scheduling request, the network side device sends an uplink grant to the terminal device, where the uplink grant indicates the uplink transmission resource allocated to the terminal device.
  • the unlicensed transmission may refer to: a contention transmission mode, which may specifically mean that multiple terminals simultaneously perform uplink signal transmission on some or all of the time-frequency resources of the same time-frequency resource allocated in advance, without the network side device Authorize.
  • Unlicensed transmission may mean that the network side device specifies a part of the uplink transmission time-frequency resources for the terminal to perform uplink signal transmission without authorization.
  • the unlicensed transmission may be: the terminal requests the network side device to schedule the uplink transmission time-frequency resource, and after using the uplink transmission time-frequency resource for uplink transmission, the uplink transmission time-frequency resource is reserved, and then the terminal needs to perform uplink transmission, and directly utilizes When the uplink transmission time-frequency resource does not need to be uplinked every time, the network side device is re-requested to schedule uplink transmission time-frequency resources.
  • the above data may be included in service data or signaling data.
  • the blind detection described above can be understood as the detection of data that may arrive without predicting whether or not data has arrived.
  • the blind detection can also be understood as detection without explicit signaling indication.
  • the above transmission resources may include, but are not limited to, a combination of one or more of the following resources:
  • Time domain resources such as radio frames, subframes, symbols, etc.
  • Frequency domain resources such as subcarriers, resource blocks, etc.
  • Airspace resources such as transmit antennas, beams, etc.
  • Code domain resources such as sparse code multiple access (English full name: Sparse Code Multiple Access, English abbreviation: SCMA) codebook, low density signature (English full name: Low Density Signature, English abbreviation: LDS) sequence, CDMA code, etc.
  • the technical solution provided by the present application can be applied to the uRLLC and mMTC scenarios, but is not limited to the two scenarios.
  • the uplink transmission method provided by the present application the terminal and the Network side device.
  • the base station Before the terminal performs the unlicensed transmission, the base station usually needs to pre-designate the available uplink transmission resources, such as the uplink pilot resource, the time domain resource, the frequency domain resource, etc., and the time-frequency resources are various, as shown in FIG. , including full downlink, full uplink, downlink-based, and uplink-based.
  • the number of orthogonal frequency division multiplexing (OFDM) symbols for uplink transmission can be used.
  • OFDM orthogonal frequency division multiplexing
  • the granularity of the scheduling resource includes not only a subframe, but also a slot and a mini-slot, which have different numbers of OFDM symbols.
  • the subframe format is used to represent the number of OFDM symbols used for uplink transmission in one subframe.
  • the base station needs to perform flexible GF transmission resource allocation.
  • a solution based on the communication system shown in FIG. 3 is proposed in the embodiment of the present application, and is configured to configure reasonable unlicensed transmission resources for different subframe formats of uplink transmission time-frequency resources.
  • the embodiment of the present application provides a communication system 100.
  • the communication system 100 includes at least one base station (BS) 20 and a plurality of terminals, such as terminal 1, terminal 2, terminal 3, terminal 4, and the like. These terminals may be terminals for D2D (Device to Device) communication, such as terminal 3 and terminal 4, or terminals for cellular communication, such as terminal 1, terminal 2 and terminal 4, and cellular communication is Refers to the communication between the terminal and the base station.
  • D2D Device to Device
  • terminal 3 and terminal 4 terminals for cellular communication
  • terminal 1, terminal 2 and terminal 4 and cellular communication is Refers to the communication between the terminal and the base station.
  • some terminals can perform cellular communication and can perform D2D communication as a D2D communication terminal.
  • the terminal 4 can perform both cellular communication and D2D communication.
  • the terminal 1 In cellular communication, the terminal 1 establishes an RRC connection with the BS 20, enters an RRC connection state, and then sends an SR request to the BS 20. If the BS 20 allows the terminal 1 to transmit data uplink, an authorization command is sent to the terminal 1, and the terminal 1 receives the authorization. After the instruction, the uplink signal can be sent to the BS20 according to the command requirements. The uplink signal transmission between the terminal 1 and the BS 20 is an authorized transmission.
  • the terminal 2 establishes an RRC connection with the BS20, and after entering the RRC connection state, generates an uplink signal to be transmitted according to the number of OFDM symbols of the uplink transmission resource allocated by the BS, and directly transmits an uplink signal to the BS20 without authorization of the BS20.
  • the uplink signal transmission between the terminal 2 and the BS 20 is an unauthorized transmission.
  • control node 60 connected to the BS 20 can perform unified scheduling on resources in the system, and can allocate resources to the terminal, perform resource reuse decision, or interfere with coordination.
  • the communication system 100 may be various radio access technology (RAT) systems, such as, for example, code division multiple access (CDMA), time division multiple access (time division). Multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (single carrier FDMA, SC-FDMA) ) and other systems.
  • RAT radio access technology
  • CDMA code division multiple access
  • time division time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency-division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards.
  • the TDMA system can implement a wireless technology such as a global system for mobile communication (GSM).
  • GSM global system for mobile communication
  • An OFDMA system can implement such as evolved universal radio land access (evolved UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies.
  • UTRA and E-UTRA are UMTS and UMTS evolved versions.
  • the various versions of 3GPP in long term evolution (LTE) and LTE-based evolution are new versions of UMTS that use E-UTRA.
  • the communication system 100 can also be applied to future-oriented communication technologies as long as new communication technologies are employed.
  • the communication system includes the cellular communication, and the technical solutions provided by the embodiments of the present application are applicable.
  • the base station is a device deployed in a radio access network to provide a wireless communication function for the terminal.
  • the base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the name of a device having a base station function may be different, for example, in an LTE system, an evolved Node B (evolved NodeB, eNB or eNodeB), in the third In a 3rd generation (3G) system, it is called a Node B or the like.
  • a base station or a BS the foregoing apparatus for providing a wireless communication function to a terminal.
  • the control node 60 may connect a plurality of base stations and allocate resources for a plurality of D2D terminals and cellular terminals covered by the plurality of base stations.
  • the base station may be a Node B in a UMTS system, and the control node may be a network controller.
  • the base station may be a small station, and the control node may be a macro base station that covers the small station.
  • the control node may be a wireless network cross-system cooperative controller or the like, and the base station is a base station in the wireless network, which is not limited in the embodiment of the present application.
  • the terminal locally stores the uplink transmission time-frequency resources allocated by the network side device before the terminal needs to transmit the uplink signal through the unlicensed transmission.
  • the terminal locally stores the correspondence between the number of OFDM symbols and the uplink signal, and the terminal may generate a corresponding uplink signal according to the number of OFDM symbols of the uplink transmission time-frequency resource, that is, the subframe format of the uplink transmission time-frequency resource, or the terminal. Determining an uplink transmission time-frequency resource that can be used by the terminal for uplink transmission according to a subframe format of the uplink transmission time-frequency resource, or generating, by the terminal, a corresponding uplink signal according to a subframe format of the uplink transmission time-frequency resource, and determining that After being used by the terminal for uplink transmission of time-frequency resources, the terminal transmits the uplink signal on the corresponding uplink transmission time-frequency resource.
  • the uplink transmission time-frequency resource that can be used by the terminal for uplink transmission in the embodiment of the present application is a time-frequency resource for unauthorized transmission, or a time-frequency resource for GF transmission.
  • the uplink transmission indication involved in the embodiment of the present application is used to indicate a correspondence between the number of OFDM symbols configured by the network side device and the uplink signal to be transmitted, or to indicate an uplink transmission that can be used by the terminal for uplink transmission.
  • the terminal generates a corresponding uplink signal to be transmitted according to the uplink transmission indication and the subframe format of the uplink transmission time-frequency resource;
  • the terminal determines, according to the uplink transmission indication and the subframe format of the uplink transmission time-frequency resource, the GF transmission time-frequency resource;
  • the terminal generates a corresponding uplink signal according to the uplink transmission indication and the subframe format of the uplink transmission time-frequency resource, and determines the time-frequency resource for performing the GF transmission, and then sends the uplink signal on the time-frequency resource of the corresponding GF transmission.
  • the uplink signal types corresponding to different subframe formats or different types of subframe formats are different, and are roughly divided into 4 Kind, for example, Type 1 (Type 1), Type 2 (Type 2), Type 3 (Type 3), Type 4 (Type 4);
  • Upstream signal type Specific signal Type 1 (Type 1) Reference signal Type 2 (Type 2) Reference signal and control signal Type 3 (Type 3) Reference signal and data signal Type 4 (Type 4) Reference signal, control signal and data signal
  • Type 1 indicates that the terminal only sends the reference signal to the network side device
  • Type 2 indicates that the terminal sends the reference signal and the control signal to the network side device
  • Type 3 indicates that the terminal sends the reference signal to the network side device. The reference signal and the data signal are transmitted
  • Type 4 indicates that the terminal transmits the reference signal, the control signal, and the data signal to the network side device.
  • the reference signal is used to send a scheduling request (SR), and is generally used by the terminal to request more uplink transmission resources from the network side device; the control signal is used to send a physical resource block (PRB) and a buffer status report (Buffer). Status Report (BSR), or Hybrid Automatic Repeat ReQuest (HARQ) process identification number (Identification, ID) or redundancy version number, etc.; data signal is transmitted by the terminal to the network side device.
  • SR scheduling request
  • PRB physical resource block
  • Buffer buffer status report
  • BSR Hybrid Automatic Repeat ReQuest
  • HARQ Hybrid Automatic Repeat ReQuest
  • the terminal determines the uplink signal to be transmitted through the corresponding relationship between the number of OFDM symbols (subframe format) and the uplink signal preset by the terminal, including at least the following two cases:
  • Manner 1 The terminal locally presets multiple types of uplink signals, and one type of uplink signal corresponds to one subframe format.
  • Manner 2 The terminal locally presets multiple types of uplink signals, and one type of uplink signal corresponds to one type of subframe format.
  • Manner 3 The terminal locally presets one type of uplink signal, and the one type of uplink signal corresponds to one subframe format.
  • Manner 4 The terminal locally presets one type of uplink signal, and the one type of uplink signal corresponds to one type of subframe format.
  • the uplink transmission indication sent by the terminal to the network side device determines the transmission type, including at least the following four cases:
  • the uplink transmission indication sent by the network side device to the terminal is one, and the uplink transmission indication carries at least one type of uplink signal, and one type of uplink signal corresponds to one subframe format.
  • the uplink transmission indication sent by the network side device to the terminal is one, and the uplink transmission indication carries at least one type of uplink signal, and one type of uplink signal corresponds to one type of subframe format.
  • Manner 3 The uplink transmission indication sent by the network side device to the terminal is multiple, and the uplink transmission indication carries one type of uplink signal, and the uplink signal of the one type corresponds to one subframe format.
  • the uplink transmission indication sent by the network side device to the terminal is multiple, and the uplink transmission indication carries one type of uplink signal, and the uplink signal of the one type corresponds to a type of subframe format.
  • the terminal determines the uplink signal to be transmitted through the corresponding relationship between the locally preset subframe format and the uplink signal or the uplink transmission indication sent by the network side: the specific form is as follows:
  • the first subframe format is: When the preset value is used, the corresponding uplink signal is type 1, that is, the terminal only transmits the reference signal; and
  • the second subframe format is: When the preset value is used, the corresponding uplink signal is type 2, that is, the terminal sends the reference signal and the control signal; and
  • the third to seventh sub-frame formats correspond to In the case of N 3 , N 4 , N 5 , or N 6 , the corresponding uplink signal is type 3, that is, the terminal transmits the reference signal and the data signal;
  • the eighth to N+1th subframe formats correspond to In the case of ..., or N n , the corresponding uplink signal is type 4, that is, the terminal transmits the reference signal, the control signal, and the data signal.
  • the number of orthogonal frequency division multiplexing OFDM symbols occupied by the uplink transmission time-frequency resource For the uplink transmission time-frequency resource, the bandwidth that can be used for uplink transmission by the terminal or the bandwidth for the unlicensed transmission in the uplink transmission time-frequency resource, the preset value may be 1/2 or the other of the entire uplink available transmission bandwidth. The value may be set according to different conditions. For example, when the uplink available transmission bandwidth is 12 subbands, the preset value may be 6, and N 1 to N n are positive integers.
  • the signal corresponding to Type 3 (Type 3) is transmitted, that is, the reference signal and the data signal;
  • the signals corresponding to Type 4 are transmitted, that is, the reference signal, the control signal, and the data signal.
  • the subframe format that may be used for uplink transmission time-frequency resources of each terminal corresponds to one type of uplink signal, so that the terminal can perform more flexible selection when performing GF transmission.
  • the manner in which the terminal determines the uplink signal to be transmitted through the corresponding relationship between the locally preset subframe format and the uplink signal or the uplink transmission indication sent by the network side is similar to the mode 1.
  • the type of the uplink signal may be divided into the mode 1 Slightly different.
  • the specific form of the second method is as follows:
  • the first type of subframe format is: When the preset value is used, the corresponding uplink signal is type 1, that is, the terminal sends the reference signal; and
  • the second type of subframe format is:
  • the corresponding uplink signal is type 2, that is, the terminal sends the reference signal and the control signal;
  • the third type of subframe format is:
  • the corresponding uplink signal is type 3, that is, the terminal sends the reference signal and the data signal;
  • the fourth type of subframe format is:
  • the corresponding uplink signal is type 4: that is, the terminal transmits the reference signal, the control signal, and the data signal;
  • N 1 ⁇ N n are positive integers.
  • N 3 6 indicates that the number of orthogonal frequency division multiplexing OFDM symbols occupied by the uplink transmission time-frequency resource is 6
  • the value of the preset value is 6 as an example.
  • the uplink signal is sent to type 3 (Type 3), that is, the reference signal and the data signal;
  • the uplink signal is sent as Type 4 (Type 4), that is, the reference signal, the control signal, and the data signal;
  • one type of uplink signal is configured for the subframe format of the uplink time-frequency resource, and the type of the uplink model corresponding to the same type of the subframe format is configured to be the same, so that signaling resources can be saved.
  • N 1 , N 2 , N 3 , N 4 , and N n are only examples, and N 1 , N 2 , N 3 , N 4 , N n may be assigned according to specific requirements, for example, N 1 can also be taken as 2, and N 2 can also be taken as 3 or the like.
  • the uplink signal, or the uplink transmission indication sent by the network side device, carries only one type of subframe format corresponding to one type of uplink signal:
  • the uplink transmission time-frequency resource occupies 1 OFDM symbol
  • the uplink signal is type 1 (Type 1), that is, the reference signal
  • the uplink signal is sent as type 3 (Type 3), ie reference signal and data signal;
  • the uplink signal is sent as type 4 (Type 4), ie reference signal, control signal and data signal;
  • the terminal local device may preset only one uplink signal type corresponding to the subframe format of the uplink transmission time-frequency resource; and the network side device may only send the subframe format corresponding to the uplink transmission time-frequency resource to the terminal.
  • the uplink signal type such as Table 4 or Table 5 or Table 6 or Table 7, is used to save signaling resources, and all forms can be sent to the terminal to allow the terminal to flexibly select.
  • the terminal determines the uplink signal to be transmitted through the corresponding relationship between the locally preset subframe format and the uplink signal or the uplink transmission indication sent by the network side.
  • the terminal only presets one type corresponding to one type of subframe format.
  • the uplink signal sent by the network side device carries only one type of uplink signal corresponding to one type of subframe format.
  • the uplink transmission time-frequency resource occupies 1 OFDM symbol
  • the uplink signal is type 1 (Type 1), that is, the reference signal
  • Another example is: when the uplink transmission time-frequency resource occupies 1 OFDM symbol, When the uplink signal is sent, it is type 2 (Type 2), that is, the reference signal and the control signal;
  • the corresponding can be represented by a table, as shown in Table 8 or Table 9:
  • the number of orthogonal frequency division multiplexing OFDM symbols occupied by the uplink transmission time-frequency resource is greater than or equal to 2 and less than or equal to 6 as an example, when the uplink transmission time-frequency resource occupies 2 to 6 OFDM symbols.
  • the uplink signal is sent, it is type 3 (Type 3), that is, the reference signal and the data signal;
  • the uplink signal is transmitted as Type 4 (Type 4), that is, the reference signal, the control signal, and the data signal;
  • the terminal locally only presets the uplink signal corresponding to the type of the subframe format; or the network side device can only send the uplink signal corresponding to the category of the subframe format of the uplink transmission time-frequency resource to the terminal, for example, Table 9 or Table 10 or Table 11 Or Table 12, in order to achieve the purpose of saving signaling resources; all forms can also be sent to the terminal, allowing the terminal to flexibly choose.
  • the transmission type in the above four modes can be sent to the terminal through the downlink control information (Downlink Control Information, DCI) of the downlink control channel (PDCCH).
  • DCI Downlink Control Information
  • the correspondence between the control message format and the GF transmission type is as shown in Table 12. Show:
  • DCI format 1A is used for uplink GF transmission, carrying reference signals in one UL cell. The following information is transmitted in DCI format 1A:
  • the DCI format 1B is used for uplink GF transmission, carrying reference signals and control signals in one UL cell.
  • the following information is transmitted in DCI format 1B:
  • the DCI format 1C is used for uplink GF transmission, carrying data signals in one UL cell.
  • the following information is transmitted in DCI format 1C
  • the DCI format 1D is used for uplink GF transmission, carrying data signals and control signals in one UL cell.
  • the following information is transmitted in DCI format 1D
  • the uplink transmission time-frequency resource configured by the network side device for the terminal may include three parts, one part is used for transmitting the reference signal, one part is used for transmitting the control signal, and the other part is used for transmitting the data signal; for the foregoing uplink signal type, for example, type 1 only needs To transmit the reference signal, only the time-frequency resource of the reference signal needs to be configured; if the type 2 needs to transmit the reference signal and the control signal, the time-frequency resources of the reference signal and the control signal need to be separately configured; if the type 3 needs to transmit the reference signal and the data signal, It is necessary to separately configure the time-frequency resources of the reference signal and the data signal; if the 1D needs to transmit the reference signal, the control signal and the data signal, the time-frequency resources of the reference signal, the control signal and the data signal need to be separately configured; here is only an example, and This limits the scope of implementation of the application.
  • Different uplink signals can be multiplexed by means of time division, frequency division or time division frequency division.
  • the terminal determines an uplink transmission time-frequency resource that can be used by the terminal for uplink transmission from the uplink transmission resource by using an uplink transmission indication sent by the network, including at least the following two situations:
  • Manner 1 The terminal receives an uplink transmission indication sent by the network side device, where the uplink transmission indicates an OFDM symbol ID and a subband ID that can be used by the terminal for uplink transmission in the uplink transmission time-frequency resource.
  • Manner 2 The terminal receives an uplink transmission indication sent by the network side device, where the uplink transmission indicates the number of subbands and the number of subbands of the uplink transmission time-frequency resource;
  • the network side device determines, according to the pre-defined distribution rule of the time-frequency resource of the GF, the current transmission time-frequency resource, that is, the time-frequency resource of the GF transmission, where the GF time-frequency resource is identified by the OFDM symbol ( That is, the OFDM symbol ID) and the sub-band identification (ie, sub-band ID) indication.
  • the formula for distributing the GF time-frequency resource is as follows:
  • N 12
  • n s 0;
  • the calculation method of the sub-band identifier b ki of the GF transmission available to the terminal 1 with ID 1 and the terminal with ID 2 is as described above, and will not be described again.
  • the sub-band identifier b ki of the GF transmission available to the terminal 1 and the terminal 2 is calculated as follows:
  • the calculation process of the symbol identifier and the sub-band identifier corresponding to the time-frequency resource of the GF transmission is the same, and is not described here.
  • the formula for distributing the GF time-frequency resource is as follows:
  • b ki is the identifier of the subband allocated to the terminal k on the network side
  • N is the number of subbands
  • K is the subband spacing
  • n s is the identifier of the OFDM symbol
  • n k is the ID of the terminal k
  • n t is Gap number
  • c( ⁇ ) is The cell ID is a pseudo-random sequence of initial values.
  • Manner 2 The uplink transmission indication sent by the terminal through the network side device only carries the number of symbols, the number of subbands, and the number of subbands of the uplink transmission time-frequency resource; the terminal according to the above formula (1) or formula (2), Calculates the identity of the subband that is uplinked on a symbol.
  • the process of calculating the identifier of the sub-band by the terminal is the same as that of the network-side device, and details are not described herein.
  • the GF time-frequency resource with the ID of 1 terminal is shown as a shaded portion in FIG. 5, and the GF time-frequency resource of the terminal with ID 2 is represented as a mesh portion in FIG.
  • the network side device calculates the OFDM symbol identifier and the sub-band identifier corresponding to the uplink transmission, and sends the uplink transmission indication to the terminal; In the transmission indication, only the parameter information is sent by the terminal, and the terminal calculates the symbol identifier and the sub-band identifier corresponding to the uplink time-frequency resource that can be used for uplink transmission by the terminal according to the parameter information sent by the network-side device.
  • the calculated GF time-frequency resource distribution is evenly distributed, and a certain regularity is presented to reduce the collision of different terminals in performing GF transmission.
  • the time-frequency resources of the GF transmission configured by the terminal 1-x are the same (as shown in the grid part in the figure).
  • the other sub-bands of the two OFDM symbols may be used for uplink transmission, or may be allocated to terminals of other groups for GF transmission.
  • FIG. 6 is a schematic structural diagram of uplink transmission performed by a terminal and a network side device according to an embodiment of the present application.
  • the network side device referred to in the embodiment of the present application may include an improved system and device as a peer device in a conventional wireless telecommunication system.
  • Such advanced or next generation devices may be included in an evolved wireless communication standard such as Long Term Evolution (LTE).
  • LTE Long Term Evolution
  • an LTE system may include an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (eNB), a wireless access point, or the like instead of a conventional base station.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • eNB Evolved Universal Terrestrial Radio Access Network
  • Any such components will be referred to herein as eNBs, but it should be understood that such components are not necessarily eNBs.
  • the next generation communication system will use "gNB" instead of the eNB of the LTE system.
  • the network side device may be the BS20 or the control node 60 as shown in FIG. 3, and the terminal may be one or more of the terminal 1 or the terminal 2 or the terminal 3 shown in FIG. 3.
  • the terminal provided by the embodiment of the present application includes: a transceiver 10 and a processor 11, and the terminal may further include a memory 12, which stores a computer execution instruction; a system bus 13, which is connected to the processor 11, the transceiver 10, and the memory. 12 and so on.
  • the network side device includes a transceiver 20 and a processor 21, which may further include a memory 22 that stores computer execution instructions, a system bus 23 that connects the processor 21, the transceiver 20, the memory 22, and the like.
  • the transceiver 20 of the network side device transmits an uplink transmission indication to the transceiver 11 of the terminal through an antenna.
  • the transceiver 10 of the terminal transmits an uplink signal to the transceiver 20 of the network side device through the antenna.
  • the processor 11 of the terminal and the processor 21 of the network side device may be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and an NP.
  • the processor may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL) or any combination.
  • the memory 12 of the terminal and the memory 22 of the network side device may include a volatile memory, such as a random access memory (RAM); and may also include a non-volatile memory.
  • a volatile memory such as a random access memory (RAM)
  • non-volatile memory such as a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD); the memory may also include a combination of the above types of memories.
  • the terminal involved in the embodiment of the present application may include various handheld devices and vehicles with wireless communication functions.
  • the terminal may also be referred to as a mobile station (MS), a terminal, and may also include a subscriber unit, a cellular phone, a smart phone, a wireless data card, Personal digital assistant (PDA) computer, tablet computer, wireless modem, handheld, laptop computer, cordless phone or wireless local loop (wireless) Local loop, WLL) Station, machine type communication (MTC) terminal, etc.
  • MS mobile station
  • PDA Personal digital assistant
  • WLL wireless local loop
  • WLL wireless local loop
  • MTC machine type communication
  • FIG. 6 and FIG. 7 to FIG. 9 are combined to describe various embodiments of the unlicensed transmission technology provided by the embodiments of the present application.
  • the terminal stores an uplink transmission time-frequency resource configured by the processor 21 of the network side device and configured to be sent by the processor 20 to the uplink device;
  • Step 101 When the terminal has an uplink signal to be transmitted, the processor 11 of the terminal determines the uplink signal to be transmitted according to the number of OFDM symbols of the uplink transmission time-frequency resource, that is, the subframe format.
  • each subframe format or each type of subframe format and its corresponding uplink signal type have been described in detail above, for example Table 2 to Table 11; in addition, the correspondence between the different subframe formats and the uplink signal type may be preset in the local area of the terminal, or may be delivered by the network side device by using an uplink transmission indication, and refer to the foregoing multiple implementation manners. , will not repeat them here.
  • Step 102 The processor 11 of the terminal generates a corresponding uplink signal according to the determined type of the uplink signal. specific:
  • the processor 11 of the terminal When the uplink signal type determined by the processor 11 is: a reference signal, the processor 11 of the terminal generates a reference signal; or
  • the processor 11 of the terminal When the uplink signal type determined by the processor 11 is: a reference signal and a control signal, the processor 11 of the terminal generates a reference signal and a control signal; or
  • the processor 11 of the terminal When the uplink signal type determined by the processor 11 is: a reference signal and a data signal, the processor 11 of the terminal generates a reference signal and a data signal; or
  • the processor 11 of the terminal When the uplink signal type determined by the processor 11 is: a reference signal, a control signal, and a data signal, the processor 11 of the terminal generates a reference signal, a control signal, and a data signal.
  • Step 103 The transceiver 10 of the terminal sends the uplink signal generated by the processor 11 to the network side device. to This completes the upstream license-free transfer.
  • the uplink transmission method provided by the present application is used to determine the uplink signal of the corresponding uplink transmission for the number of OFDM symbols occupied by different uplink transmission time-frequency resources, and may be locally preset by the terminal or sent by the network side device in different manners.
  • the terminal provides a solution for performing unlicensed transmission for different uplink transmission time-frequency resources, thereby ensuring the effect of unauthorized transmission and effectively improving communication performance.
  • the network side device can receive the uplink signal sent by the terminal through blind detection and the like and perform corresponding processing.
  • the second embodiment of the unlicensed transmission method provided by the present application is as shown in FIG. 8.
  • the method provided in the second embodiment differs from the first embodiment in that the terminal transmits subframes according to uplink transmission time-frequency resources in the second embodiment.
  • Format, determining to perform time-frequency resources that can be used by the terminal for uplink transmission, and the specific process is as follows:
  • step 201 when the terminal needs to send an uplink signal, the processor 11 of the terminal determines to perform uplink transmission by the terminal according to the subframe format of the uplink transmission time-frequency resource.
  • the uplink transmission time-frequency resources corresponding to the different subframe formats that can be used by the terminal for uplink transmission are different, and may be indicated by the identifier of the sub-band and the identifier of the symbol, and each subframe format or Each type of subframe format and its corresponding uplink transmission time-frequency resource that can be used by the terminal for uplink transmission have been described in detail in FIGS. 4 to 5 and corresponding text portions, and details are not described herein again.
  • Step 202 The processor 11 of the terminal generates an uplink signal. It should be noted that, at this time, the terminal only generates one or more of a reference signal or a control signal or a data signal to be transmitted, and is limited to the first embodiment. The method in the process to generate an upstream signal.
  • Step 203 The transceiver 10 of the terminal sends the uplink signal generated by the processor 11 to the network side device on the determined uplink transmission time-frequency resource that can be used by the terminal for uplink transmission. This completes the upstream license-free transmission.
  • the network-side device can perform targeted detection on a specific time-frequency resource, and It is not necessary to receive the uplink signal sent by the terminal through blind detection or the like, so the validity of the unauthorized transmission can be greatly improved.
  • the third embodiment of the unlicensed transmission method provided by the present application is shown in FIG. 10.
  • the method provided in the third embodiment is a combination of the first embodiment and the second embodiment, and the terminal can generate corresponding uplink signals according to the subframe format.
  • the uplink transmission time-frequency resource that can be used by the terminal for uplink transmission can be determined according to the subframe format, which further improves the flexibility and effectiveness of the uplink unlicensed transmission.
  • the detailed implementation process has been described in detail in the text descriptions corresponding to FIG. 7 and FIG. 8, and details are not described herein again.
  • each network element such as a terminal or a base station, a control node, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the algorithmic steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. Professional skills The skilled person can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiments of the present application may divide the functional modules of the communication device according to the foregoing method examples.
  • each functional module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • the embodiment of the present application further provides a communication chip, including:
  • the signal transceiver circuit 100 is configured to receive and save an uplink transmission time-frequency resource allocated by the network side device;
  • the memory 101 is configured to save an uplink transmission time-frequency resource received by the signal transceiver circuit 100;
  • the processing circuit 102 when the terminal has an uplink signal to be transmitted, determines an uplink signal to be transmitted according to the number of orthogonal frequency division multiplexing OFDM symbols in the uplink transmission time-frequency resource held by the memory 101;
  • the signal transceiver circuit 100 is further configured to send the uplink signal determined by the processing circuit 102 to the network side device.
  • the communication chip includes:
  • the signal transceiving circuit 100 is configured to receive an uplink transmission time-frequency resource and an uplink transmission indication allocated by the network side device, where the uplink transmission indication is used to indicate that the uplink transmission time-frequency resource is used by the terminal for uplink transmission Frequency resource
  • the memory 101 is configured to store an uplink transmission time-frequency resource and an uplink transmission indication received by the signal transceiver circuit 100;
  • the processing circuit 102 when the terminal has an uplink signal to be transmitted, receives, according to the signal transmission and reception circuit 100, the number of orthogonal frequency division multiplexing OFDM symbols of the uplink transmission time-frequency resource and the uplink transmission indication from the saved uplink transmission. Determining a time-frequency resource that can be used by the terminal for uplink transmission in a time-frequency resource;
  • the signal transceiving circuit 100 is further configured to transmit an uplink signal on an uplink transmission time-frequency resource that is determined by the processing circuit 102 to be used for uplink transmission by the terminal.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used.
  • the combination may be integrated into another device, or some features may be ignored or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium.
  • the technical solution of the present application or the part that contributes to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本申请提供一种上行传输方法,终端和网络侧设备。所述方法包括:所述终端保存有网络侧设备分配的上行传输时频资源;当所述终端有上行信号需要发送时,根据上行传输时频资源中的正交频分复用OFDM符号数,确定待传输的上行信号;所述终端向所述网络侧设备发送所述上行信号。实施本申请提供的上行传输方法,针对不同的上行传输时频资源,都提供进行免授权传输的解决方案,有效提升通信性能。

Description

一种上行传输方法、终端、网络侧设备
本申请要求于2017年1月6日提交中国专利局、申请号为201710011353.5、申请名称为“一种上行传输方法、终端、网络侧设备”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
本申请涉及无线通信技术领域,尤其涉及一种上行传输方法、终端和网络侧设备。
背景技术
无线蜂窝网络,如长期演进(Long Term Evolution,LTE)系统中,终端在发送上行信号之前,首先需要建立与基站的无线资源控制(Radio Resource Control,RRC)连接,进入无线资源控制连接状态,然后向基站发送调度请求(Scheduling Request,SR)。如果基站允许该终端发送上行信号,基站会向该终端发送授权指令。终端接收到授权指令后,才能根据指令要求向基站发送上行信号。这一上行信号发送方法称为授权传输。
授权传输有两个缺点,一个是时延比较大,这里的时延是指,从终端确定有上行信号需要发送到终端从空口将数据发送出去的时延;另一个缺点是,当某段时间内有上行信号发送需求的终端数量非常多时,用于发送调度请求和授权的上下行控制信道资源消耗将非常大,导致控制开销占网络总开销(如功率、空口资源等)的比例较高,尤其是当终端的业务都是小数据包业务时,授权传输的这一缺点尤为明显。
免授权传输的基本思想是数据“即来即走”,即终端确定有上行信号要发送时,不必经过发送上行调度请求和等待接收基站的授权这一过程,而是直接将数据经过的一定处理后发送给基站。免授权传输相比于基站调度的授权传输方案,不必经过发送上行调度请求和等待接收基站的授权这一过程,可以缩短传输时延,满足时延方面的需求。
但是,发明人发现,现有技术中提出了免授权传输的基本思想,但是对于免授权传输在不同的上行传输资源中如何实现并没有相应的技术方案,因此不能满足未来通信系统的需求。
发明内容
本申请描述了一种上行传输方法、终端和网络侧设备。
网络侧设备为终端分配的上行传输时频资源有不同的形式,例如全下行、全上行、下行为主、上行为主等,如此网络侧设备可以为终端进行灵活的资源分配。
为了在这些不同的上行传输时频资源上实现免授权传输,一方面,本申请提供了一种由终端执行的上行传输方法,包括:
网络侧设备为终端预先配置上行传输时频资源,终端本地保存该上行传输时频资源。 当终端有上行信号需要发送时,无需请求网络侧设备再调度上行传输时频资源,直接根据其本地保存的上行传输时频资源中的正交频分复用OFDM符号数,确定待传输的上行信号,并且向网络侧设备发送。
实施本申请提供的上行传输方法,针对不同的上行传输时频资源占用的OFDM符号数,确定相应的上行传输的上行信号,并且可以由终端本地预置或者由网络侧设备通过不同的方式下发给终端,由此针对不同的上行传输时频资源都提供进行免授权传输的解决方案,可以保证免授权传输的效果,有效提升通信性能。
终端生成的上行信号的具体组成和内容是不同的,由OFDM符号数与待传输的上行信号之间的对应关系确定。
在一种可能的实现方式中,至少一个OFDM符号数与待传输的上行信号之间的对应关系由终端预置在本地。
在另一种可能的实现方式中,至少一个OFDM符号数与待传输的上行信号之间的对应关系由网络侧设备下发给终端。
所述对应关系中还包括:
所述上行传输时频资源中可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系。或者,所述上行传输时频资源中用于免授权传输的带宽与待传输的上行信号之间的对应关系。
在网络侧设备向终端下发至少一个OFDM符号数与待传输的上行信号之间的对应关系的实现方式中,可以通过上行传输指示下发给终端,该上行传输指示携带中下行控制消息中,也可以通过表格的形式发送给终端。
一种可能的实现方式中,终端本地预置或者网络侧设备指示的OFDM符号数、可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系,如下:
Figure PCTCN2017115662-appb-000001
预设值时,对应的待传输的上行信号为:参考信号;
Figure PCTCN2017115662-appb-000002
预设值时,对应的待传输的上行信号为:参考信号和控制信号;
Figure PCTCN2017115662-appb-000003
对应的待传输的上行信号为:参考信号和数据信号;
Figure PCTCN2017115662-appb-000004
对应的待传输的上行信号为:参考信号、控制信号和数据信号;
其中,
Figure PCTCN2017115662-appb-000005
为上行传输时频资源占用的正交频分复用OFDM符号数;
Figure PCTCN2017115662-appb-000006
为上行传输时频资源中可被所述终端用于上行传输的带宽或上行传输时频资源中用于免授权传输的带宽,N1~Nn为正整数。
本实施例中,将OFDM符号数按照一定的数值范围进行归类,一类的OFDM符号数对应一种类型的上行信号,终端本地存储该对应关系时,可以节约存储资源。网络侧设备向终端下发该对应关系时,由于将一定数值范围内的OFDM符号数进行了归类,因此可以节约信令资源。
另一种可能的实现方式中,OFDM符号数、传输带宽与待传输的上行信号之间的 对应关系,如下:
Figure PCTCN2017115662-appb-000007
预设值时,对应的待传输的上行信号为:参考信号;
Figure PCTCN2017115662-appb-000008
预设值时,对应的待传输的上行信号为:参考信号和控制信号;
Figure PCTCN2017115662-appb-000009
对应的待传输的上行信号为:参考信号和数据信号;
Figure PCTCN2017115662-appb-000010
对应的待传输的上行信号为:参考信号和数据信号;
Figure PCTCN2017115662-appb-000011
对应的待传输的上行信号为:参考信号和数据信号;
Figure PCTCN2017115662-appb-000012
对应的待传输的上行信号为:参考信号和数据信号;
Figure PCTCN2017115662-appb-000013
对应的待传输的上行信号为:发送参考信号、控制信号和数据信号;
Figure PCTCN2017115662-appb-000014
对应的待传输的上行信号为:参考信号、控制信号和数据信号;
其中,
Figure PCTCN2017115662-appb-000015
为上行传输时频资源占用的正交频分复用OFDM符号个数;
Figure PCTCN2017115662-appb-000016
为上行传输时频资源中可被所述终端用于上行传输的带宽或上行传输时频资源中用于免授权传输的带宽,N1~Nn为正整数。
本实施例中,每一个OFDM符号数对应一种上行信号,由此终端依据其上行传输时频资源的OFDM符号数可以更准确的查找对应的上行信号。
另一种实现方式中,OFDM符号数、可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系的表格实现形式如下:
或者
Figure PCTCN2017115662-appb-000018
或者
Figure PCTCN2017115662-appb-000019
其中,类型x表示收发器发送的上行信号包括如下四种中的任意一种:
(1)参考信号;
(2)参考信号和控制信号;
(3)参考信号和数据信号;
(4)参考信号,控制信号和数据信号。
又一方面,本申请提供另一种由终端执行的上行传输方法,包括:
所述终端保存有网络侧设备分配的上行传输时频资源和上行传输指示;
所述终端根据所述上行传输时频资源的正交频分复用OFDM符号数和上行传输指示确定的可被所述终端用于上行传输的上行传输时频资源上;
所述终端在所述确定的上行传输时频资源上传输上行信号。
实施本申请实施例,由于终端预先保存了上行传输时频资源和上行传输指示,在有上行信号需要发送时可以根据其拥有的上行传输时频资源的OFDM符号数,在上行传输指示的上行传输时频资源上进行上行传输,因此网络侧设备可以在特定的时频资源上进行有针对性的检测,而不需要通过盲检等手段接收终端发送的上行信号,因此可以极大程度的提高免授权传输的有效性。
一种可能的实现方式中,所述终端接收所述网络侧设备发送的上行传输指示,所述上行传输指示所述上行传输时频资源中可被所述终端用于上行传输OFDM符号ID和子带ID;所述终端在所述OFDM符号ID和所述子带ID对应的上行时频资源上传输所述上行信号。
本实现方式中,由于网络侧设备直接向终端指示用于上行传输的OFDM符号ID和子带ID,因此终端可以直接根据该OFDM符号ID和子带ID进行上行传输,由此传输更为有序和高效,网络侧设备也能在相应的时频资源上进行检测,从而提高上行信号传输效率。
另一种可能的实现方式中,所述终端接收所述网络侧设备发送的上行传输指示,所述 上行传输指示所述上行传输时频资源的子带个数和子带间隔数;
所述终端根据所述子带个数、子带间隔数以及所述OFDM符号数从所述上行传输时频资源中确定用于当前传输的OFDM符号的ID和子带ID,所述终端在所述OFDM符号ID和所述子带ID对应的上行时频资源上传输所述上行信号。
本实现方式中,由于网络侧设备向终端发送子带个数和子带间隔数,由终端自己计算OFDM符号ID和子带ID,因此终端不用依赖网络侧设备的指示,传输更为有序和高效,网络侧设备也能在相应的时频资源上进行检测,从而提高上行信号传输效率。
一种可能的实现方式中,OFDM符号ID和子带ID是由如下公式确定:
Figure PCTCN2017115662-appb-000020
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID。
另一种可能的实现方式中,OFDM符号ID和子带ID是由如下公式确定:
Figure PCTCN2017115662-appb-000021
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID,nt是时隙编号,c(·)是以
Figure PCTCN2017115662-appb-000022
小区ID为初值的伪随机序列。
以上两种实现方式中,通过不同的公式可以计算出OFDM符号ID和子带ID,并且该OFDM符号ID和子带ID对应的时频资源均匀分布在网络侧设备为终端分配的上行传输时频资源上,因此终端能够更为高效有序的传输上行信号,可以避免多个终端在进行免授权传输时的碰撞。网络侧设备在OFDM符号ID和子带ID对应的时频资源上进行信号检测,更为高效。
又一方面,本申请实施例提供了一种上行传输方法,该方法由网络侧设备执行,包括:
所述网络侧设备为终端配置上行传输时频资源和上行传输指示;所述上行传输时频资源中包括至少一个正交频分复用OFDM符号;
所述网络侧设备向所述终端发送上行传输指示;所述上行传输指示包括所述至少一个OFDM符号数与待传输的上行信号之间的对应关系;
所述网络侧设备接收终端根据所述上行传输指示确定的上行信号。
实施本申请实施例,由于网络侧设备为终端配置了上行传输时频资源中的正交频分复用OFDM符号数与待传输的上行信号之间的对应关系,针对不同的上行传输时频资源占用的OFDM符号数对应不同的上行信号,终端可以根据该对应关系,根据使用的上行传输时频资源OFDM符号数生成对应的上行信号,由此针对不同的上行传输时频资源都提供进行免授权传输的解决方案,可以保证免授权传输的效果,有效提升通信性能。
又一方面,本申请实施例提供了另一种由网络侧设备执行的上行传输方法,包括:
所述网络侧设备为终端配置上行传输时频资源;所述上行传输时频资源中包括至少一个OFDM符号;
所述网络侧设备向所述终端发送上行传输指示;所述上行传输指示用于指示所述上行 传输时频资源中可被所述终端用于上行传输的时频资源;
所述网络侧设备接收终端在所述可被所述终端用于上行传输的时频资源上发送的上行信号。
实施本申请实施例,由于网络侧设备预先为终端配置了上行传输时频资源和上行传输指示,终端在有上行信号需要发送时可以根据其拥有的上行传输时频资源的OFDM符号数,在上行传输指示的上行传输时频资源上进行上行传输,由此传输更为有序,网络侧设备也能在相应的时频资源上进行检测,从而提高上行信号传输效率。
一种可能的实现方式中,所述上行传输指示携带可被所述终端用于上行传输的OFDM符号ID和子带ID,所述终端在所述OFDM符号ID和所述子带ID对应的上行时频资源上传输所述上行信号。
另一种可能的实现方式中,所述上行传输指示携带上行传输时频资源的子带个数和子带间隔数,以使所述终端根据所述子带个数、子带间隔数以及所述上行传输时频资源的OFDM符号数,从所述上行传输时频资源中确定的可被所述终端用于上行传输的OFDM符号ID和子带ID,所述终端在所述OFDM符号ID和所述子带ID对应的上行时频资源上传输所述上行信号。
一种可能实现的方式中,所述OFDM符号的ID和子带ID由如下公式确定:
Figure PCTCN2017115662-appb-000023
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID。
另一种可能实现的方式中,所述OFDM符号的ID和子带ID由如下公式确定:
Figure PCTCN2017115662-appb-000024
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID,nt是时隙编号,c(·)是以
Figure PCTCN2017115662-appb-000025
小区ID为初值的伪随机序列。
本申请实施例提供了一种终端。该终端具有实现上述方法设计中终端行为的功能。所述终端可以为D2D(Device-to-Device,设备到设备)终端,也可以是蜂窝终端。所述终端的功能可以通过硬件实现,其包括收发器和处理器。也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。所述模块可以是软件和/或硬件。
一方面,本申请实施例提供的终端包括:
存储器,用于保存网络侧设备为其分配的上行传输时频资源;
处理器,用于当所述终端有上行信号需要发送时,根据所述存储器保存的上行传输时频资源的正交频分复用OFDM符号数,确定待传输的上行信号;
收发器,用于向所述网络侧设备发送所述处理器确定的上行信号。
实施本申请提供的终端,针对不同的上行传输时频资源占用的OFDM符号数,确定相应的上行传输的上行信号,并且可以由终端本地预置或者由网络侧设备通过不同的方式下发给终端,由此针对不同的上行传输时频资源都提供进行免授权传输的解决方案,可以保证免授权传输的效果,有效提升通信性能。
又一方面,本申请实施例提供的终端包括:
存储器,用于存储网络侧设备分配的上行传输时频资源和上行传输指示;所述上行传输指示用于指示所述上行传输时频资源中可被所述终端用于上行传输的时频资源;
处理器,用于根据所述收发器接收的上行传输时频资源的正交频分复用OFDM符号数和上行传输指示从所述保存的上行传输时频资源中确定可被所述终端用于上行传输的时频资源;
收发器,用于在所述处理器确定的可被所述终端用于上行传输的上行传输时频资源上传输上行信号。
实施本申请实施例,由于终端预先保存了上行传输时频资源和上行传输指示,在有上行信号需要发送时可以根据其拥有的上行传输时频资源的OFDM符号数,在上行传输指示的上行传输时频资源上进行上行传输,由此传输更为有序,网络侧设备也能在相应的时频资源上进行检测,从而提高上行信号传输效率。
一种可能的实现方式中,所述存储器中存储的上行传输指示携带可被所述终端用于上行传输的OFDM符号ID和子带ID。
另一种可能的实现方式中,所述存储器中存储的上行传输指示携带所述上行传输时频资源的子带个数和子带间隔数;
所述处理器,还用于根据所述存储器存储的子带个数、子带间隔数以及所述上行传输时频资源的OFDM符号数,从所述上行传输时频资源中确定可被所述终端用于上行传输的OFDM符号ID和子带ID。
一种可能的实现方式中,所述OFDM符号的ID和子带ID由如下公式确定:
Figure PCTCN2017115662-appb-000026
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID。
另一种可能的实现方式中,所述OFDM符号ID和子带ID由如下公式确定:
Figure PCTCN2017115662-appb-000027
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID,nt是时隙编号,c(·)是以
Figure PCTCN2017115662-appb-000028
小区ID为初值的伪随机序列。
本申请实施例提供了网络侧设备,该网络侧设备可以是一种基站,也可以是一种控制节点。
一方面,本申请实施例提供网络侧设备包括:
处理器,用于为终端配置上行传输时频资源;所述上行传输时频资源中包括至少一个正交频分复用OFDM符号;
收发器,用于向终端发送上行传输指示和所述上行传输时频资源,并接收终端根据所述上行传输指示确定的上行信号;所述上行传输指示包括所述至少一个OFDM符号数与待传输的上行信号之间的对应关系。
实施本申请实施例,由于网络侧设备为终端配置了上行传输时频资源中的正交频分复 用OFDM符号数与待传输的上行信号之间的对应关系,针对不同的上行传输时频资源占用的OFDM符号数对应不同的上行信号,终端可以根据该对应关系,根据使用的上行传输时频资源OFDM符号数生成对应的上行信号,由此针对不同的上行传输时频资源都提供进行免授权传输的解决方案,可以保证免授权传输的效果,有效提升通信性能。
又一方面,本申请实施例提供的网络侧设备包括:
处理器,用于为终端配置上行传输时频资源所述上行传输时频资源中包括至少一个OFDM符号;
收发器,用于向所述终端发送上行传输指示;所述上行传输指示用于指示所述上行传输时频资源中可被所述终端用于上行传输的时频资源;
所述收发器还用于接收终端在可被所述终端用于上行传输的时频资源上发送的上行信号。
实施本申请实施例,由于网络侧设备预先为终端配置了上行传输时频资源和上行传输指示,终端在有上行信号需要发送时可以根据其拥有的上行传输时频资源的OFDM符号数,在上行传输指示的上行传输时频资源上进行上行传输,由此传输更为有序,网络侧设备也能在相应的时频资源上进行检测,从而提高上行信号传输效率。
一种可能的实现方式中,所述收发器向终端发送的上行传输指示为所述上行传输时频资源中可被所述终端用于上行传输的OFDM符号ID和子带ID。
另一种可能的实现方式中,所述收发器向终端发送的上行传输指示为所述上行传输时频资源的子带个数和子带间隔数。
一种可能的实现方式中,所述处理器还用于由如下公式确定所述OFDM符号ID和子带ID:
Figure PCTCN2017115662-appb-000029
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID。
另一种可能的实现方式中,所述处理器还用于由如下公式确定所述OFDM符号ID和子带ID:
Figure PCTCN2017115662-appb-000030
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID,nt是时隙编号,c(·)是以
Figure PCTCN2017115662-appb-000031
小区ID为初值的伪随机序列。
另一方面,本申请实施例提供了一种基站,该基站具有实现上述方法实际中基站行为的功能。所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中,基站的结构中包括处理器和收发器,所述处理器被配置为支持基站执行上述方法中相应的功能。所述收发器用于支持基站与终端之间的通信,向终端发送上述方法中所涉及的信息或者信令,接收基站所发送的信息或指令。所述基站还可以包 括存储器,所述存储器用于与处理器耦合,其保存基站必要的程序指令和数据。
又一方面,本申请实施例提供了一种控制节点,可以包括控制器/处理器,存储器以及通信单元。所述控制器/处理器可以用于协调多个基站之间的资源管理和配置,可以用于执行上述实施例描述的为终端配置时频资源方法。存储器可以用于存储控制节点的程序代码和数据。所述通信单元,用于支持该控制节点与基站进行通信,譬如将所配置的资源的信息发送给基站。
再一方面,本申请实施例提供了一种通信芯片,包括:
信号收发电路,用于接收并保存网络侧设备为其分配的上行传输时频资源;
存储器,用于保存信号收发电路接收的上行传输时频资源;
处理电路,当所述终端有上行信号需要发送时,根据存储器保存的上行传输时频资源中的正交频分复用OFDM符号数,确定待传输的上行信号;
信号收发电路,还用于向所述网络侧设备发送所述处理电路确定的上行信号。
另一种可能的实现方式中,本申请实施例提供的通信芯片包括:
信号收发电路,用于接收网络侧设备分配的上行传输时频资源和上行传输指示;所述上行传输指示用于指示所述上行传输时频资源中可被所述终端用于上行传输的时频资源;
存储器,用于存储所述信号收发线路接收到的上行传输时频资源和上行传输指示;
处理电路,当所述终端有上行信号需要发送时,根据信号收发电路接收上行传输时频资源的正交频分复用OFDM符号数和的上行传输指示从所述保存的上行传输时频资源中确定可被所述终端用于上行传输的时频资源;
信号收发电路,还用于在所述处理电路确定的可被所述终端用于上行传输的上行传输时频资源上传输上行信号。
又一方面,本申请实施例提供了一种通信系统,该系统包括上述方面所述的基站和终端,一种实施方式中,还可以包括上述实施例中的控制节点。
再一方面,本申请实施例提供了一种计算机存储介质,用于储存为上述基站所用的计算机软件指令,其包含用于执行上述方面所设计的程序。
再一方面,本申请实施例提供了一种计算机存储介质,用于储存为上述终端所用的计算机软件指令,其包含用于执行上述方面所设计的程序。
本申请的又一方面提供了一种计算机可读存储介质,所述计算机可读存储介质中存储有指令,当其在计算机上运行时,使得计算机执行上述各方面所述的方法。
本申请的又一方面提供了一种包含指令的计算机程序产品,当其在计算机上运行时,使得计算机执行上述各方面所述的方法。
附图说明
为了更清楚地说明本申请实施例,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其它的附图。
图1为本申请提供的未来网络的场景示意图;
图2为本申请提供的不同子帧格式的示意图;
图3为本申请提供的通信系统的架构图;
图4为本申请提供的不同子帧格式对应的上行传输资源位置配置一个示意图;
图5为本申请提供的不同子帧格式对应的上行传输资源位置配置又一示意图;
图6为本申请提供的网络侧设备和终端的结构示意图;
图7为本申请提供的上行传输方法实施例一的流程示意图;
图8为本申请提供的上行传输方法实施例二的流程示意图;
图9为本申请提供的上行传输方法实施例三的流程示意图;
图10为本申请提供的终端的功能结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述。
新的通信需求对现有网络提出了包括技术上和商业模式上的种种挑战,需要下一代移动网络(Next Generation Mobile Network,NGMN)来满足。如图1所示,NGMN主要移动网络业务划分为三类场景:增强移动宽带(eMBB,Enhanced Mobile Broadband),低时延高可靠性通信(uRLLC,Ultra-reliable and Low-latency Communications)以及大规模机器通信(mMTC,Massive Machine Type Communications)。
mMTC覆盖对于联接密度要求较高的场景,例如智慧城市,智能农业,满足人们对于数字化社会的需求。该场景的典型特征是大连接,即终端数量庞大,业务类型以小数据包业务为主,而且对低时延有一定的要求。
uRLLC聚焦对时延极其敏感的业务,例如自动驾驶/辅助驾驶;对车联网、无人驾驶、工业控制等业务来说,系统容量并不是主要的问题,但是对于时延和可靠性却有着很高的要求。
在以上两种场景中,免授权传输被认为是一种优于授权传输、更加适用的上行信号传输方法。免授权传输相比于基站调度的授权传输方案,不必经过发送上行调度请求和等待接收基站的授权这一过程,大大缩短了传输时延,可以满足在时延方面的需求。
为了方便描述,本文中将免授权传输的英文表示为Grant Free,简称GF。但是,免授权传输还可以有其他的表示方式,例如Grantless,本文并不以此限定免授权传输的含义,可以理解的是,这里的免授权传输并不是一个专有名词,在实际应用中也有可能会采用其它的叫法,但是都不离本专利申请的实质。免授权传输通常是针对上行信号传输的,其可以理解为如下含义中的任一一种或多种,但是并限于这几种。例如,免授权传输也有可能被理解为是下述多种含义中的部分技术特征的组合或其他类似含义:
1)免授权传输可以指:网络侧设备预先分配并告知终端设备多个传输资源;终端设备有上行信号传输需求时,从网络侧设备预先分配的多个传输资源中选择至少一个传输资源,使用所选择的传输资源发送上行信号;网络侧设备在所述预先分配的多个传输资源中的一个或多个传输资源上检测终端设备发送的上行信号。所述检测可以是盲检测,也可能根据所述上行信号中某一个控制域进行检测,或者是其他方式进行检测。
2)免授权传输可以指:网络侧设备预先分配并告知终端设备多个传输资源,以使终端设备有上行信号传输需求时,从网络侧设备预先分配的多个传输资源中选择至少一个传输资源,使用所选择的传输资源发送上行信号。
3)免授权传输可以指:获取预先分配的多个传输资源的信息,在有上行信号传输需 求时,从所述多个传输资源中选择至少一个传输资源,使用所选择的传输资源发送上行信号。获取的方式可以从网络侧设备获取。
4)免授权传输可以指:不需要网络侧设备动态调度即可实现终端设备的上行信号传输的方法,所述动态调度可以是指网络侧设备为终端设备的每次上行信号传输通过信令来指示传输资源的一种调度方式。可选地,实现终端设备的上行信号传输可以理解为允许两个或两个以上终端设备的数据在相同的时频资源上进行上行信号传输。可选地,所述传输资源可以是终端接收所述的信令的时刻以后的一个或多个传输时间单位的传输资源。一个传输时间单位可以是指一次传输的最小时间单元,比如TTI(Transmission Time Interval),数值可以为1ms,或者可以是预先设定的传输时间单元。
5)免授权传输可以指:终端设备在不需要网络侧设备授权的情况下进行上行信号传输。所述授权可以指终端设备发送上行调度请求给网络侧设备,网络侧设备接收调度请求后,向终端设备发送上行授权,其中所述上行授权指示分配给终端设备的上行传输资源。
6)免授权传输可以指:一种竞争传输方式,具体地可以指多个终端在预先分配的相同的时频资源中的部分或全部时频资源上同时进行上行信号传输,而无需网络侧设备进行授权。
7)免授权传输可以指:网络侧设备为终端指定一部分上行传输时频资源专用于进行不需要授权的上行信号传输。
8)免授权传输可以指:终端请求网络侧设备调度上行传输时频资源,利用该上行传输时频资源进行上行传输过后,保留该上行传输时频资源,之后终端需要进行上行传输时,直接利用该部分上行传输时频资源而不需要每次进行上行传输的时候,都重新请求网络侧设备调度上行传输时频资源。
上述数据可以为包括业务数据或者信令数据。
上述盲检测可以理解为在不预知是否有数据到达的情况下,对可能到达的数据进行的检测。所述盲检测也可以理解为没有显式的信令指示下的检测。
上述传输资源可以包括但不限于如下资源的一种或多种的组合:
时域资源,如无线帧、子帧、符号等;
频域资源,如子载波、资源块等;
空域资源,如发送天线、波束等;
码域资源,如稀疏码多址接入(英文全称为:Sparse Code Multiple Access,英文简称为:SCMA)码本、低密度签名(英文全称为:Low Density Signature,英文简称为:LDS)序列、CDMA码等;
上行导频资源。
本申请提供的技术方案可以应用于uRLLC和mMTC场景,但不仅仅限于这两种场景,在其他任何一种不需要基站调度的传输场景中,都可以应用本申请提供的上行传输方法,终端和网络侧设备。
在终端进行免授权传输之前,基站通常需要为终端预先指定可用的上行传输资源,例如上行导频资源、时域资源、频域资源等,而这些时频资源有多种,如图2所示,包括全下行,全上行,下行为主,上行为主等。一般的,可以根据用于上行传输的正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)符号数
Figure PCTCN2017115662-appb-000032
进行区分。假设一个 子帧包含14个OFDM符号,对于全下行子帧
Figure PCTCN2017115662-appb-000033
对于全上行子帧
Figure PCTCN2017115662-appb-000034
当用于上行传输的子帧的符号个数较少时,对应的可用于免授权传输的时频资源数量也较少,反之则较多。
需要说明的是:调度资源的粒度不仅包括子帧(subframe),还有可能是时隙(slot)和小时隙(mini-slot),它们具有不同的OFDM符号数量。为描述方便,本申请实施例中用子帧格式来表示一个子帧中用于上行传输的OFDM符号数。
因此对于不同子帧格式的上行传输时频资源,基站需要进行灵活的GF传输资源分配。本申请实施例基于图3所示的通信系统中提出了一种解决方案,用于针对不同的上行传输时频资源的子帧格式都配置合理的免授权传输资源。
如图3所示,本申请实施例提供了一种通信系统100。该通信系统100至少包括至少一个基站(base station,BS)20和多个终端,例如终端1、终端2、终端3,终端4等等。这些终端可以是用于D2D(Device to Device,端到端)通信的终端,例如终端3和终端4,也可以是用于蜂窝通信的终端,例如终端1,终端2和终端4,蜂窝通信是指终端和基站之间进行的通信。当然有一些终端既可以进行蜂窝通信可以作为D2D通信终端进行D2D通信,例如终端4既可以进行蜂窝通信也可以进行D2D通信。
在蜂窝通信中,终端1建立与BS20的RRC连接,进入RRC连接状态,然后向BS20发送SR请求,如果BS20允许该终端1上行发送数据,会向该终端1发送授权指令,终端1接收到授权指令后,才能根据指令要求向BS20发送上行信号。终端1与BS20之间的上行信号传输为授权传输。
终端2建立与BS20的RRC连接,进入RRC连接状态后,根据BS分配的上行传输资源的OFDM符号数,生成待传输的上行信号,不经BS20的授权,直接向BS20发送上行信号。终端2与BS20之间的上行信号传输为免授权传输。
本申请实施例中,与BS20连接的控制节点60,可以对系统中的资源进行统一调度,可以给终端配置资源,进行资源复用决策,或者干扰协调等。
在本申请实施例中,所述通信系统100可以为各种无线接入技术(radio access technology,RAT)系统,譬如例如码分多址(code division multiple access,CDMA)、时分多址(time division multiple access,TDMA)、频分多址(frequency division multiple access,FDMA)、正交频分多址(orthogonal frequency-division multiple access,OFDMA)、单载波频分多址(single carrier FDMA,SC-FDMA)和其它系统等。术语“系统”可以和“网络”相互替换。CDMA系统可以实现例如通用无线陆地接入(universal terrestrial radio access,UTRA),CDMA2000等无线技术。UTRA可以包括宽带CDMA(wideband CDMA,WCDMA)技术和其它CDMA变形的技术。CDMA2000可以覆盖过渡标准(interim standard,IS)2000(IS-2000),IS-95和IS-856标准。TDMA系统可以实现例如全球移动通信系统(global system for mobile communication,GSM)等无线技术。OFDMA系统可以实现诸如演进通用无线陆地接入(evolved UTRA,E-UTRA)、超级移动宽带(ultra mobile broadband,UMB)、IEEE 802.11(Wi-Fi),IEEE 802.16(WiMAX),IEEE 802.20,Flash OFDMA等无线技术。UTRA和E-UTRA是UMTS以及UMTS演进版本。3GPP在长期演进(long term evolution,LTE)和基于LTE演进的各种版本是使用E-UTRA的UMTS的新版本。
此外,所述通信系统100还可以适用于面向未来的通信技术,只要采用新通信技术的 通信系统包括蜂窝通信,都适用本申请实施例提供的技术方案。
本申请实施例描述的系统架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。
本申请实施例中,所述基站是一种部署在无线接入网中用以为终端提供无线通信功能的装置。所述基站可以包括各种形式的宏基站,微基站(也称为小站),中继站,接入点等。在采用不同的无线接入技术的系统中,具备基站功能的设备的名称可能会有所不同,例如,在LTE系统中,称为演进的节点B(evolved NodeB,eNB或者eNodeB),在第三代(3rd generation,3G)系统中,称为节点B(Node B)等。为方便描述,本申请所有实施例中,上述为终端提供无线通信功能的装置统称为基站或BS。
在图3所示的通信系统中,所述控制节点60可以连接多个基站,并为所述多个基站覆盖下的多个D2D终端和蜂窝终端配置资源。例如,所述基站可以为UMTS系统中的Node B,所述控制节点可以为网络控制器。又例如,所述基站可以为小站,则所述控制节点可以为覆盖所述小站的宏基站。再例如,所述控制节点可以为无线网络跨制式协同控制器等,基站为无线网络中的基站,在本申请实施例中不作限定说明。
为了便于描述,在此首先对本申请中所使用的技术术语和方案做一些说明:
首先,终端在有上行信号需要通过免授权传输的方式进行发送之前,终端本地已经保存有网络侧设备为其分配的上行传输时频资源。
终端本地还保存有OFDM符号数与上行信号之间的对应关系,终端可根据该上行传输时频资源的OFDM符号数,即该上行传输时频资源的子帧格式生成相应的上行信号,或者终端根据上行传输时频资源的子帧格式,确定可被所述终端用于上行传输的上行传输时频资源,或者,终端根据上行传输时频资源的子帧格式生成相应的上行信号,并且确定可被所述终端用于上行传输的上行传输时频资源后,在相应的上行传输时频资源上进行发送该上行信号。
为了便于描述,本申请实施例中所称的可被所述终端用于上行传输的上行传输时频资源即为免授权传输的时频资源,或简称GF传输的时频资源
本申请实施例中涉及的上行传输指示用于指示网络侧设备为终端配置的OFDM符号数与待传输的上行信号之间的对应关系或者用于指示可被所述终端用于上行传输的上行传输时频资源;
终端根据该上行传输指示和上行传输时频资源的子帧格式生成相应的待传输的上行信号;
终端根据该上行传输指示和上行传输时频资源的子帧格式,确定GF传输时频资源;
终端根据该上行传输指示和上行传输时频资源的子帧格式生成相应的上行信号,并且确定进行GF传输的时频资源后,在相应的GF传输的时频资源上进行发送该上行信号。
不管是终端本地预置还是网络侧设备下发上行传输指示OFDM符号数与上行信号的对应关系中,不同子帧格式或不同类的子帧格式对应的上行信号类型不同,大致将其分为4种,例如类型1(Type 1)、类型2(Type 2)、类型3(Type 3)、类型4(Type 4);
表1:上行信号类型
上行信号类型 具体信号
类型1(Type 1) 参考信号
类型2(Type 2) 参考信号和控制信号
类型3(Type 3) 参考信号和数据信号
类型4(Type 4) 参考信号,控制信号和数据信号
其中,类型1(Type 1)表示终端只向网络侧设备发送参考信号;类型2(Type 2)表示终端向网络侧设备发送参考信号和控制信号;类型3(Type 3)表示终端向网络侧设备发送参考信号和数据信号;类型4(Type 4)表示终端向网络侧设备发送参考信号、控制信号和数据信号。
其中,参考信号用于发送调度请求(SR),通常用于终端向网络侧设备请求更多的上行传输资源;控制信号用于发送物理资源块(physical resource block,PRB)、缓存状态报告(Buffer Status Report,BSR)、或者混合自动重传请求(Hybrid Automatic Repeat reQuest,HARQ)进程身份识别号(Identification,ID)或者冗余版本号等重传信息;数据信号则是终端向网络侧设备传输的语音或者文字或者视频数据等等;通常来讲,传输数据信号所需要的时频传输资源较多,而参考信号和控制信号所需的时频传输资源相对较少。
终端通过其本地预置的OFDM符号数(子帧格式)与上行信号的对应关系确定待传输的上行信号,包括至少以下两种情况:
方式一:终端本地预置多个类型的上行信号,一种类型的上行信号与一个子帧格式对应。
方式二:终端本地预置多个类型的上行信号,一种类型的上行信号与一类子帧格式对应。
方式三:终端本地预置一个类型的上行信号,该一个类型的上行信号与一个子帧格式对应。
方式四:终端本地预置一个类型的上行信号,该一个类型的上行信号与一类子帧格式对应。终端通过网络侧设备向其下发的上行传输指示确定传输类型,包括至少以下四种情况:
方式一:网络侧设备向终端下发的上行传输指示为一个,该上行传输指示中携带有至少一个类型的上行信号,一种类型的上行信号与一个子帧格式对应。
方式二:网络侧设备向终端下发的上行传输指示为一个,该上行传输指示中携带有至少一个类型的上行信号,一种类型的上行信号与一类子帧格式对应。
方式三:网络侧设备向终端下发的上行传输指示为多个,该上行传输指示中携带有一个类型的上行信号,该一个类型的上行信号与一个子帧格式对应。
方式四:网络侧设备向终端下发的上行传输指示为多个,该上行传输指示中携带有一个类型的上行信号,该一个类型的上行信号与一类子帧格式对应。
终端通过本地预置的子帧格式与上行信号的对应关系或者通过网络侧下发的上行传输指示确定待传输的上行信号的方式一:具体形式如下:
第一个子帧格式为:
Figure PCTCN2017115662-appb-000035
预设值时,其对应的上行信号为类型1,即终端只发送参考信号;和
第二个子帧格式为:
Figure PCTCN2017115662-appb-000036
预设值时,其对应的上行信号为类型2,即终端发送参考信号和控制信号;和
第三个至第七个子帧格式分别对应
Figure PCTCN2017115662-appb-000037
N3,N4,N5,或N6的情况,其对应的上行信号为类型3,即终端发送参考信号和数据信号;和
第八个至第N+1个子帧格式分别对应
Figure PCTCN2017115662-appb-000038
…,或Nn的情况,其对应的上行信号为类型4,即终端发送参考信号、控制信号和数据信号。
其中,
Figure PCTCN2017115662-appb-000039
为上行传输时频资源占用的正交频分复用OFDM符号个数;
Figure PCTCN2017115662-appb-000040
为上行传输时频资源中可被所述终端用于上行传输的带宽或上行传输时频资源中用于免授权传输的带宽,上述预设值可以是整个上行可用传输带宽的1/2或者其他值,可以根据不同的情况设置不同的值,例如上行可用传输带宽为12个子带的时候,上述预设值的取值可以为6,N1~Nn为正整数。
在一个具体的例子中,假设N1=1,N2=2,…,Nn=14,上述预设值的取值为6。其中N1=1表示上行传输时频资源占用的正交频分复用OFDM符号个数为1,以N2=2表示上行传输时频资源占用的正交频分复用OFDM符号个数为2…,以Nn=14表示上行传输时频资源占用的正交频分复用OFDM符号个数为14。
当上行传输时频资源占用1个OFDM符号时,
Figure PCTCN2017115662-appb-000041
时,发送类型1(Type 1)对应的上行信号即参考信号;
当上行传输时频资源占用1个OFDM符号时,
Figure PCTCN2017115662-appb-000042
时,发送类型2(Type 2)对应的信号,即参考信号和控制信号;和
当上行传输时频资源占用2-6个OFDM符号时,发送类型3(Type 3)对应的信号,即参考信号和数据信号;和
当上行传输时频资源占用7-14个OFDM符号时,发送类型4(Type 4)对应的信号,即参考信号、控制信号和数据信号。
不同子帧格式的对应不同类型的上行信号,可以参见如下表2所示:
表2
Figure PCTCN2017115662-appb-000043
Figure PCTCN2017115662-appb-000044
方式一针对每一种终端可能用于上行传输时频资源的子帧格式对应一种类型的上行信号,使得终端进行GF传输的时候选择可以更加灵活。
终端通过本地预置的子帧格式与上行信号的对应关系或者通过网络侧下发的上行传输指示确定待传输的上行信号的方式二与方式一类似,上行信号的类型划分方式可能会与方式一稍有不同。例如,方式二的具体形式如下:
第一类子帧格式为:
Figure PCTCN2017115662-appb-000045
预设值时,其对应的上行信号为类型1,即终端发送参考信号;和
第二类子帧格式为:
Figure PCTCN2017115662-appb-000046
预设值时,其对应的上行信号为类型2,即终端发送参考信号和控制信号;和
第三类子帧格式为:
Figure PCTCN2017115662-appb-000047
其对应的上行信号为类型3,即终端发送参考信号和数据信号;和
第四类子帧格式为:
Figure PCTCN2017115662-appb-000048
其对应的上行信号为类型4:即终端发送参考信号、控制信号和数据信号;
其中,
Figure PCTCN2017115662-appb-000049
为上行传输时频资源占用的正交频分复用OFDM符号个数;
Figure PCTCN2017115662-appb-000050
为上行传输时频资源中可被所述终端用于上行传输的带宽或上行传输时频资源中用于免授权传输的带宽,N1~Nn为正整数。
以N1=1表示上行传输时频资源占用的正交频分复用OFDM符号个数为1,以N2=2表示上行传输时频资源占用的正交频分复用OFDM符号个数为2,以N3=6表示上行传输时频资源占用的正交频分复用OFDM符号个数为6,以N4=7表示上行传输时频资源占用的正交频分复用OFDM符号个数为7,以Nn=14表示上行传输时频资源占用的正交频分复用OFDM符号个数为14,
Figure PCTCN2017115662-appb-000051
预设值的取值为6为例进行说明;
当上行传输时频资源占用1个OFDM符号时,
Figure PCTCN2017115662-appb-000052
时,发送上行信号为类型1(Type1),即参考信号;和
当上行传输时频资源占用1个OFDM符号时,
Figure PCTCN2017115662-appb-000053
时,发送上行信号为类型2(Type 2),即参考信号和控制信号;和
当上行传输时频资源占用2~6个OFDM符号时,发送上行信号为类型3(Type 3),即参考信号和数据信号;和
当上行传输时频资源占用7~14个OFDM符号时,发送上行信号为类型4(Type 4),即参考信号、控制信号和数据信号;
对应的可以用表格表示如表3所示:
表3
Figure PCTCN2017115662-appb-000054
方式二针对每一类终端可能用于上行传输时频资源的子帧格式配置一种类型的上行信号,同一类的子帧格式对应的上行型号的类型配置为相同,因此可以节约信令资源。
需要说明的是,N1,N2,N3,N4,Nn的取值仅为举例,可以根据具体的需求对N1,N2,N3,N4,Nn进行赋值,例如N1还可以取为2,N2还可以取值为3等等。
终端通过本地预置的子帧格式与上行信号的对应关系或者通过网络侧下发的上行传输指示确定待传输的上行信号的方式三中,终端只预置一种子帧格式对应的一种类型的上行信号;或者网络侧设备下发的上行传输指示中,只携带一种子帧格式对应一种类型的上行信号:
例如:当上行传输时频资源占用1个OFDM符号时,
Figure PCTCN2017115662-appb-000055
时,发送上行信号为类型1(Type 1),即参考信号;
对应的可以用表格表示如表4所示:
表4
Figure PCTCN2017115662-appb-000056
又如:当上行传输时频资源占用1个OFDM符号时,
Figure PCTCN2017115662-appb-000057
时,发送上行信号为类型2(Type 2),即参考信号和控制信号;
对应的可以用表格表示如表5所示:
表5
Figure PCTCN2017115662-appb-000058
再如:以N2=2表示上行传输时频资源占用的正交频分复用OFDM符号个数为2为例,当上行传输时频资源占用2个OFDM符号时,发送上行信号为类型3(Type 3),即参考信号和数据信号;
对应的可以用表格表示,如表6所示:
表6
Figure PCTCN2017115662-appb-000059
再如:以Nn=14表示上行传输时频资源占用的正交频分复用OFDM符号个数为14为例,当上行传输时频资源占用14个OFDM符号时,发送上行信号为类型4(Type 4),即参考信号、控制信号和数据信号;
对应的用表格表示,如下表7:
表7
Figure PCTCN2017115662-appb-000060
Figure PCTCN2017115662-appb-000061
为其他取值的情形以此类推,在此不再赘述。在这种实现方式中,终端本地可以只预置一种上行传输时频资源的子帧格式对应的上行信号类型;而网络侧设备可以只向终端发送其上行传输时频资源的子帧格式对应的上行信号类型,例如表4或表5或表6或表7,以达到节约信令资源的目的,也可以将所有表格全部发给终端,让终端灵活选择。
终端通过本地预置的子帧格式与上行信号的对应关系或者通过网络侧下发的上行传输指示确定待传输的上行信号的方式四中,终端只预置一类子帧格式对应的一个类型的上行信号;以及网络侧设备下发的上行传输指示只携带一类子帧格式对应的一类型的上行信号。
例如:当上行传输时频资源占用1个OFDM符号时,
Figure PCTCN2017115662-appb-000062
时,发送上行信号为类型1(Type 1),即参考信号;
再如:当上行传输时频资源占用1个OFDM符号时,
Figure PCTCN2017115662-appb-000063
时,发送上行信号 为类型2(Type 2),即参考信号和控制信号;
对应的可以用表格表示,如表8或表9所示:
表8
Figure PCTCN2017115662-appb-000064
表9
Figure PCTCN2017115662-appb-000065
以N2=2,N3=6表示上行传输时频资源占用的正交频分复用OFDM符号个数大于等于2小于等于6为例,当上行传输时频资源占用2~6个OFDM符号时,发送上行信号为类型3(Type 3),即参考信号和数据信号;
对应的用表格表示,如下表10:
表10
Figure PCTCN2017115662-appb-000066
以N4=7,Nn=14表示上行传输时频资源占用的正交频分复用OFDM符号个数大于等于7,小于等于14为例,当上行传输时频资源占用7~14个OFDM符号时,发送上行信号为类型4(Type 4),即参考信号、控制信号和数据信号;
表格表示如下表11:
表11
Figure PCTCN2017115662-appb-000067
Figure PCTCN2017115662-appb-000068
为其他取值的情形以此类推,在此不再赘述。终端本地只预置一类子帧格式对应的上行信号;或者网络侧设备可以只向终端发送其上行传输时频资源的子帧格式所在类别对应的上行信号,例如表9或表10或表11或表12,以达到节约信令资源的目的; 也可以将所有表格全部发给终端,让终端灵活选择。
上述四种方式中的传输类型可以通过物理下行控制信道(Downlink Control Channel,PDCCH)的下行控制信息(Downlink Control Information,DCI)发送至终端,控制消息格式与GF传输类型的对应关系如表12所示:
表12
Figure PCTCN2017115662-appb-000069
不同的类型的上行信号对应不同的DCI格式,其中部分字段定义如下:
1格式1A
DCI格式1A被用于上行GF传输,在一个UL小区携带参考信号。以下信息在DCI格式1A中进行传输:
-DM RS循环移位和OCC索引-x比特(Cyclic shift for DM RS and OCC index–x bits)
-…
2格式1B
DCI格式1B被用于上行GF传输,在一个UL小区携带参考信号和控制信号。以下信息在DCI格式1B中进行传输:
-资源块分配和跳频资源分配(Resource block assignment and hopping resource allocation)–x bits
-DM RS循环移位和OCC索引-x比特(Cyclic shift for DM RS and OCC index–x bits)
-…
3格式1C
DCI格式1C被用于上行GF传输,在一个UL小区携带数据信号。以下信息在DCI格式1C中进行传输
-跳频标志-1比特(Frequency hopping flag–1bit)
-资源块分配和跳频资源分配(Resource block assignment and hopping resource allocation)–x bits
-调制编码方案和冗余版本-x比特(Modulation and coding scheme and redundancy version–x bits)
-DM RS循环移位和OCC索引-x比特(Cyclic shift for DM RS and OCC index–x bits)
-…
4格式1D
DCI格式1D被用于上行GF传输,在一个UL小区携带数据信号和控制信号。以下信息在DCI格式1D中进行传输
-跳频标志-1比特(Frequency hopping flag–1bit)
-资源块分配和跳频资源分配(Resource block assignment and hopping resource allocation)–x bits
-调制编码方案和冗余版本-x比特(Modulation and coding scheme and redundancy version–x bits)
-DM RS循环移位和OCC索引-x比特(Cyclic shift for DM RS and OCC index–x bits)
-…
网络侧设备为终端配置的上行传输时频资源可以包括三部分,一部分用于传输参考信号,一部分用于传输控制信号,一部分用于传输数据信号;对于前述的上行信号类型,例如类型1只需要传输参考信号,则只需要配置参考信号的时频资源;类型2需要传输参考信号和控制信号,则需要分别配置参考信号和控制信号的时频资源;类型3需要传输参考信号和数据信号,则需要分别配置参考信号和数据信号的时频资源;1D需要传输参考信号、控制信号和数据信号,则需要分别配置参考信号、控制信号和数据信号的时频资源;此处仅为举例,并不以此限定本申请的实施范围。不同的上行信号可以通过时分,频分或者时分频分组合的方式进行复用。
终端通过网络侧下发的上行传输指示来从所述上行传输资源中确定可被所述终端用于上行传输的上行传输时频资源,包括至少以下两种情况:
方式一:所述终端接收所述网络侧设备发送的上行传输指示,所述上行传输指示所述上行传输时频资源中可被所述终端用于上行传输的OFDM符号ID和子带ID。
方式二:终端接收所述网络侧设备发送的上行传输指示,所述上行传输指示所述上行传输时频资源的子带个数和子带间隔数;
所述终端根据所述子带个数、子带间隔数以及所述OFDM符号数从所述上行传输时频资源中确定可被所述终端用于上行传输的OFDM符号的ID和子带ID。
下面具体说明:
方式二中,网络侧设备根据预先定义的GF传输的时频资源的分布规则,确定进行当前传输的上行传输时频资源,即GF传输的时频资源,该GF时频资源由OFDM符号标识(即OFDM符号ID)和子带标识(即子带ID)指示。
一种实现方式中,所述的GF时频资源的分布规则公式如下:
Figure PCTCN2017115662-appb-000070
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID。如图5所示,N=12,K=4,根据上述公式(1),i的取值为0,1,2,3;
对于子帧格式(a),ns=0;当终端k的身份ID nk=1时,根据上述分布规则公式:
ID为1的终端,其第1个GF时频资源对应的子带的标识是:b11=0·4+(0+1)mod 4=1;
ID为1的终端,其第2个GF时频资源对应的子带的标识是:b12=1·4+(0+1)mod 4=5;
ID为1的终端,其第3个GF时频资源对应的子带的标识是:b13=2·4+(0+1)mod 4=9;
当终端k的身份ID nk=2时,根据上述公式(1):
ID为2的终端,其第1个GF时频资源对应的子带的标识是:b21=0·4+(0+2)mod 4=2;
ID为2的终端,其第2个GF时频资源对应的子带的标识是:b22=1·4+(0+2)mod 4=6;
ID为2的终端,其第3个GF时频资源对应的子带的标识是:b23=2·4+(0+2)mod 4=10。
当子帧格式(b),ns=0时;
ID为1的终端1和ID为2的终端可用的GF传输的子带标识bki的计算方式如前述,不再赘述;
而在符号标识ns=1上,终端1和终端2可用的GF传输的子带标识bki的计算如下:
当终端k的身份ID nk=1时,根据上述公式(1):
ID为1的终端,其第1个GF时频资源对应的子带的标识是:b11=0·4+(1+1)mod 4=2;
ID为1的终端,其第2个GF时频资源对应的子带的标识是:b12=1·4+(1+1)mod 4=6;
ID为1的终端,其第3个GF时频资源对应的子带的标识是:b13=2·4+(1+1)mod 4=10;
当终端k的身份ID nk=2时,根据上述分布规则公式:
ID为2的终端,其第1个GF时频资源对应的子带的标识是:b21=0·4+ (1+2)mod 4=3;
ID为2的终端,其第2个GF时频资源对应的子带的标识是:b22=1·4+(1+2)mod 4=7;
ID为2的终端,其第3个GF时频资源对应的子带的标识是:b23=2·4+(1+2)mod 4=11。
子帧格式(c),ns=0、1、2和子帧格式(d),ns=0、1、2、3时,ID为1的终端和ID为2的终端在其上可用的GF传输的时频资源对应的符号标识和子带标识的计算过程与之相同,在此不再赘述。
在另一种实现方式中,所述的GF时频资源的分布规则公式如下:
Figure PCTCN2017115662-appb-000071
其中,bki为网络侧为终端k分配的子带的标识,N表示子带个数,K表示子带间隔,ns为OFDM符号的标识,nk为终端k的ID,nt是时隙编号,c(·)是以
Figure PCTCN2017115662-appb-000072
小区ID为初值的伪随机序列。
公式(2)和公式(1)的主要区别在于增加了小区级的随机跳频,其计算原理与公式(1)类似,在此不再赘述。
方式二:终端通过网络侧设备下发的上行传输指示只携带上行传输时频资源的符号个数、子带个数和子带间隔数;由终端根据上述的公式(1)或公式(2),计算在某个符号上进行上行传输的子带的标识。
终端计算子带的标识的过程与网络侧设备计算的原理相同,不再赘述。
总之,ID为1终端的GF时频资源在图5中表示为斜线部分,ID为2中终端的GF时频资源在图5中表示为网格部分。
不管是方式二中由网络侧设备事先计算好可被所述终端用于上行传输的上行时频资源对应的OFDM符号标识和子带标识,通过上行传输指示发送给终端;还是方式二中,在上行传输指示中只给由终端发送一些参数信息,由终端根据网络侧设备发送的参数信息,自己计算可被所述终端用于上行传输的上行时频资源对应的符号标识和子带标识。由于本申请实施例提供的根据预定义GF时频资源的分布规则,计算出的GF时频资源分布均匀分布,呈现一定规律,以减少不同的终端在进行GF传输时的碰撞。
需要说明的是,前述实施例中所指的终端的ID为nk=1所表示的终端个数并不唯一,而是对应一组ID为nk=1的多个终端,同理nk=2对应一组ID为nk=2的多个终端。
如图5所示,以上行传输时频资源的子帧格式为占用2个OFDM符号为例,网络 侧设备为ID为nk=1的多个终端配置的GF时频资源相同,该多个终端1-0,终端1-1,终端1-2…终端1-x可以共享一个符号标识和一个子带标识对应的GF传输的时频资源(如图中斜线部分所示),它们可以时分,频分或者时分频分复用该GF传输的时频资源;同理,网络侧设备为ID为nk=2的多个终端1-0,终端1-1,终端1-2…终端1-x配置的GF传输的时频资源相同(如图中网格部分所示)。该2个OFDM符号中的其他子带可以用于上行传输,也可以分配给其他组的终端进行GF传输。
图6示意了本申请实施例的终端与网络侧设备进行上行传输的结构示意图。
本申请实施例所指网络侧设备可以包括作为对传统无线电信系统中的对等设备的改进的系统和设备。这种高级或下一代设备可以包含在演进无线通信标准(例如长期演进(LTE))中。例如,LTE系统可以包括演进通用陆地无线接入网(E-UTRAN)节点B(eNB)、无线接入点或类似组件,而不是传统的基站。任何此类组件将在本文中被称作eNB,但是应当理解的是,此类组件不一定是eNB。下一代通信系统,将使用“gNB”代替LTE系统的eNB。
具体的,网络侧设备可以是如图3所示的BS20或者控制节点60,终端可以是图3所示的终端1或终端2或终端3中的一个或者多个。
本申请实施例提供的终端,包括:收发器10和处理器11,该终端还可以包括存储器12,其存储计算机执行指令;系统总线13,该系统总线13连接处理器11,收发器10和存储器12等。网络侧设备包括收发器20和处理器21,该网络侧设备还可以包括存储器22,其存储计算机执行指令;系统总线23,该系统总线23连接处理器21,收发器20和存储器22等。网络侧设备的收发器20通过天线向终端的收发器11发送上行传输指示。终端的收发器10通过天线向网络侧设备的收发器20发送上行信号。
需要说明的是:所述终端的处理器11和网络侧设备的处理器21可以是中央处理器(central processing unit,简称CPU),网络处理器(network processor,简称NP)或者CPU和NP的组合。处理器还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit,简称ASIC),可编程逻辑器件(programmable logic device,简称PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device,简称CPLD),现场可编程逻辑门阵列(field-programmable gate array,简称FPGA),通用阵列逻辑(generic array logic,简称GAL)或其任意组合。
终端的存储器12和网络侧设备的存储器22可以包括易失性存储器(volatile memory),例如随机存取内存(random access memory,简称RAM);还可以包括非易失性存储器(non-volatile memory),例如快闪存储器(flash memory),硬盘(hard disk drive,简称HDD)或固态硬盘(solid-state drive,简称SSD);存储器还可以包括上述种类的存储器的组合。
本申请实施例中所涉及到的终端可以包括各种具有无线通信功能的手持设备、车 载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备。所述终端也可以称为移动台(mobile station,简称MS),终端(terminal),还可以包括用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant,PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptop computer)、无绳电话(cordless phone)或者无线本地环路(wireless local loop,WLL)台、机器类型通信(machine type communication,MTC)终端等。为方便描述,本申请所有实施例中,上面提到的设备统称为终端。
下面将图6与图7~图9相结合,描述本申请实施例提供免授权传输技术的各种实施方式。
本申请提供的上行传输方法的实施例一如图7所示,流程如下:
终端保存有来自网络侧设备的处理器21为其配置并通过收发器20向其发送的上行传输时频资源;
步骤101,终端有上行信号需要发送时,终端的处理器11根据所述上行传输时频资源的OFDM符号数(即子帧格式),确定待传输的上行信号;
如前所述,不同的子帧格式对应的上行信号的类型是不同的,如前表1所示:大致有类型1:只传输参考信号,类型2:传输参考信号和控制信号,类型3:传输参考信号和数据信号,类型4:传输参考信号、控制信号和数据信号等四种方式,每一个子帧格式或者每一类子帧格式和其对应的上行信号类型在前述已经详细说明,例如表2~表11所示;另外,不同子帧格式与上行信号类型的对应关系可以预置在终端本地中,也可以由网络侧设备通过上行传输指示进行下发,参照前述的多种实现方式,在此不再赘述。
步骤102,终端的处理器11根据确定的上行信号的类型生成相应的上行信号。具体的:
在处理器11确定的上行信号类型为:参考信号时,终端的处理器11生成参考信号;或
在处理器11确定的上行信号类型为:参考信号和控制信号时,终端的处理器11生成参考信号和控制信号;或
在处理器11确定的上行信号类型为:参考信号和数据信号时,所述终端的处理器11生成参考信号和数据信号;或
在处理器11确定的上行信号类型为:参考信号、控制信号和数据信号时,所述终端的处理器11生成参考信号、控制信号和数据信号。
参考信号、控制信号、数据信号三种不同的上行信号的具体作用和功能在前述已经详细描述,在此不再赘述。
步骤103,终端的收发器10将处理器11生成的上行信号发送至网络侧设备。至 此完成上行免授权传输。
实施本申请提供的上行传输方法,针对不同的上行传输时频资源占用的OFDM符号数,确定相应的上行传输的上行信号,并且可以由终端本地预置或者由网络侧设备通过不同的方式下发给终端,由此针对不同的上行传输时频资源都提供进行免授权传输的解决方案,可以保证免授权传输的效果,有效提升通信性能。网络侧设备可以通过盲检等手段接收终端发送的上行信号并进行相应的处理了。
本申请提供的免授权传输方法的实施例二如图8所示,本实施例二提供的方法与实施例一不同之处在于,终端在此实施例二中根据上行传输时频资源的子帧格式,确定进行可被所述终端用于上行传输的时频资源,具体流程如下:
与实施例一不同的是,在步骤201,终端在有上行信号需要发送时,终端的处理器11根据所述上行传输时频资源的子帧格式,确定进行可被所述终端用于上行传输的上行传输时频资源;
如前所述,不同的子帧格式对应的可被所述终端用于上行传输的上行传输时频资源是不同的,具体可以由子带的标识和符号的标识来指示,每一个子帧格式或者每一类子帧格式和其对应的可被所述终端用于上行传输的上行传输时频资源在图4~5和相应的文字部分已经详细说明,在此不再赘述。
步骤202,终端的处理器11生成上行信号;需要说明的是,此时,终端只是生成待传输的参考信号或者控制信号或者数据信号中的一种或多种,并部限定于按照实施例一中的方法来生成上行信号。
步骤203,终端的收发器10将处理器11生成的上行信号在其确定的可被所述终端用于上行传输的上行传输时频资源上发送至网络侧设备。至此完成上行免授权传输。
本实施例二中,由于终端根据子帧格式确定了可被所述终端用于上行传输的上行传输时频资源,因此网络侧设备可以在特定的时频资源上进行有针对性的检测,而不需要通过盲检等手段接收终端发送的上行信号,因此可以极大程度的提高免授权传输的有效性。
本申请提供的免授权传输方法的实施例三如图10所示,本实施例三提供的方法是实施例一和实施例二的结合,终端既可以根据子帧格式生成相应的上行信号,也可以根据子帧格式确定可被所述终端用于上行传输的上行传输时频资源,进一步提高了上行免授权传输的灵活性和有效性。具体见图9的步骤,其详细实现过程在图7和图8对应的文字描述中已经有详细说明,在此不再赘述。
上述主要从通信系统整体环境和硬件装置,以及方法流程角度对本申请实施例提供的方案进行了介绍。可以理解的是,各个网元,例如终端或者基站,控制节点等为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本文中所公开的实施例描述的各示例的算法步骤,本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技 术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对通信装置的功能模块进行划分,例如,可以对应各个功能划分各个功能模块,也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。需要说明的是,本申请实施例中对模块的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。
本申请实施例还提供一种通信芯片,包括:
信号收发电路100,用于接收并保存网络侧设备为其分配的上行传输时频资源;
存储器101,用于保存信号收发电路100接收的上行传输时频资源;
处理电路102,当所述终端有上行信号需要发送时,根据存储器101保存的上行传输时频资源中的正交频分复用OFDM符号数,确定待传输的上行信号;
信号收发电路100,还用于向所述网络侧设备发送所述处理电路102确定的上行信号。
在另一种实现方式中,该通信芯片,包括:
信号收发电路100,用于接收网络侧设备分配的上行传输时频资源和上行传输指示;所述上行传输指示用于指示所述上行传输时频资源中可被所述终端用于上行传输的时频资源;
存储器101,用于存储所述信号收发电路100接收到的上行传输时频资源和上行传输指示;
处理电路102,当所述终端有上行信号需要发送时,根据所述信号收发电路100接收上行传输时频资源的正交频分复用OFDM符号数和的上行传输指示从所述保存的上行传输时频资源中确定可被所述终端用于上行传输的时频资源;
信号收发电路100,还用于在所述处理电路102确定的可被所述终端用于上行传输的上行传输时频资源上传输上行信号。
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中,应该理解到,所揭露的装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述模块或单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个装置,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是一个物理单元或多个物理单元,即可以位于一个地方,或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该软件产品存储在一个存储介质中,包括若干指令用以使得一个设备(可以是单片机,芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。

Claims (36)

  1. 一种上行传输方法,所述方法由终端执行,其特征在于,包括:
    所述终端保存有网络侧设备分配的上行传输时频资源;
    当所述终端有上行信号需要发送时,根据上行传输时频资源中的正交频分复用OFDM符号数,确定待传输的上行信号;
    所述终端向所述网络侧设备发送所述上行信号。
  2. 如权利要求1所述的上行传输方法,其特征在于,所述上行信号包括如下四种中的任意一种:
    (1)参考信号;
    (2)参考信号和控制信号;
    (3)参考信号和数据信号;
    (4)参考信号,控制信号和数据信号。
  3. 如权利要求1所述的上行传输方法,其特征在于,所述终端中保存有至少一个所述OFDM符号数与待传输的上行信号之间的对应关系。
  4. 如权利要求1所述的上行传输方法,其特征在于,所述终端接收网络侧设备发送的上行传输指示,所述上行传输指示至少一个所述OFDM符号数与待传输的上行信号之间的对应关系。
  5. 如权利要求3或4所述的上行传输方法,其特征在于,所述对应关系还包括:
    所述上行传输时频资源中可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系。
  6. 如权利要求4所述的上行传输方法,其特征在于,所述上行传输指示中还携带所述上行传输时频资源中可被所述终端用于上行传输的OFDM符号ID和子带ID;
    所述终端向所述网络侧设备发送所述上行信号包括:所述终端在所述OFDM符号ID和所述子带ID对应的上行时频资源上向所述网络设备发送所述上行信号。
  7. 如权利要求4所述的上行传输方法,其特征在于,所述上行传输指示中还携带所述上行传输时频资源可被所述终端用于上行传输的子带个数和子带间隔数;
    所述终端根据所述子带个数、子带间隔数以及所述OFDM符号数确定上行传输时频资源中可被所述终端用于上行传输的OFDM符号ID和子带ID;
    所述终端向所述网络侧设备发送所述上行信号包括:所述终端在所述OFDM符号ID和所述子带ID对应的上行时频资源上向所述网络设备发送所述上行信号。
  8. 如权利要求1至4中任一项所述的上行传输方法,其特征在于,所述上行传输时频资源被所述网络侧设备分配给至少两个终端,所述终端为这至少两个终端中的一个。
  9. 如权利要求2所述的上行传输方法,其特征在于,所述终端中保存有OFDM符号数、可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系,如下:
    Figure PCTCN2017115662-appb-100001
    预设值时,对应的待传输的上行信号为:参考信号;
    Figure PCTCN2017115662-appb-100002
    预设值时,对应的待传输的上行信号为:参考信号和控制信号;
    Figure PCTCN2017115662-appb-100003
    对应的待传输的上行信号为:参考信号和数据信号;
    Figure PCTCN2017115662-appb-100004
    对应的待传输的上行信号为:参考信号、控制信号和数据信号;
    其中,
    Figure PCTCN2017115662-appb-100005
    为上行传输时频资源占用的正交频分复用OFDM符号数;
    Figure PCTCN2017115662-appb-100006
    为上行传输时频资源中可被所述终端用于上行传输的传输带宽,N1~Nn为正整数。
  10. 一种上行传输方法,所述方法由网络侧设备执行,其特征在于,包括:
    所述网络侧设备为终端配置上行传输时频资源;所述上行传输时频资源中包括至少一个正交频分复用OFDM符号;
    所述网络侧设备向所述终端发送上行传输指示;所述上行传输指示包括所述至少一个OFDM符号数与待传输的上行信号之间的对应关系;
    所述网络侧设备接收终端根据所述上行传输指示确定的上行信号。
  11. 权利要求10所述的上行传输方法,其特征在于,所述上行信号包括如下四种中的任意一种:
    (1)参考信号;
    (2)参考信号和控制信号;
    (3)参考信号和数据信号;
    (4)参考信号,控制信号和数据信号。
  12. 如权利要求10或11所述的上行传输方法,其特征在于,所述对应关系还包括:
    所述上行传输时频资源中可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系。
  13. 如权利要求10或11所述的上行传输方法,其特征在于,所述上行传输指示中还携带所述上行传输时频资源中可被所述终端用于上行传输的OFDM符号ID和子带ID。
  14. 如权利要求11或12所述的上行传输方法,其特征在于,所述上行传输指示中还携带所述上行传输时频资源的子带个数和子带间隔数。
  15. 如权利要求11所述的上行传输方法,其特征在于,所述对应关系包括:OFDM符号数、可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系,如下:
    Figure PCTCN2017115662-appb-100007
    预设值时,对应的待传输的上行信号为:参考信号;
    Figure PCTCN2017115662-appb-100008
    预设值时,对应的待传输的上行信号为:参考信号和控制信号;
    Figure PCTCN2017115662-appb-100009
    对应的待传输的上行信号为:参考信号和数据信号;
    Figure PCTCN2017115662-appb-100010
    对应的待传输的上行信号为:参考信号、控制信号和数据信号;
    其中,
    Figure PCTCN2017115662-appb-100011
    为上行传输时频资源占用的正交频分复用OFDM符号数;
    Figure PCTCN2017115662-appb-100012
    为所述上行传输时频资源中可被所述终端用于上行传输的带宽,N1~Nn为正整数。
  16. 一种终端,其特征在于,包括:
    存储器,用于保存网络侧设备为其分配的上行传输时频资源;
    处理器,用于当所述终端有上行信号需要发送时,根据所述存储器保存的上行传输时频资源的正交频分复用OFDM符号数,确定待传输的上行信号;
    收发器,用于向所述网络侧设备发送所述处理器确定的上行信号。
  17. 如权利要求16所述的终端,其特征在于,所述收发器发送的上行信号包括如下四种中的任意一种:
    (1)参考信号;
    (2)参考信号和控制信号;
    (3)参考信号和数据信号;
    (4)参考信号,控制信号和数据信号。
  18. 权利要求16所述的终端,其特征在于,所述存储器,还用于保存至少一个所述OFDM符号数与待传输的上行信号之间的对应关系。
  19. 如权利要求16所述的终端,其特征在于,所述收发器还用于接收所述网络侧设备发送的上行传输指示,所述上行传输指示携带至少一个所述OFDM符号数与待传输的上行信号之间的对应关系;
    所述存储器,还用于保存所述收发器接收的至少一个所述OFDM符号数与待传输的上行信号之间的对应关系。
  20. 如权利要求18或19所述的终端,其特征在于,所述存储器中存储的所述对应关系还包括:
    所述上行传输时频资源中可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系。
  21. 如权利要求19所述的终端,其特征在于,所述收发器接收的所述上行传输指示中还携带所述上行传输时频资源中可被所述终端用于上行传输的OFDM符号ID和子带ID,所述收发器还用于在该OFDM符号ID和子带ID对应的上行时频资源上发送上行信号。
  22. 如权利要求19所述的终端,其特征在于,所述收发器接收的所述上行传输指示中还携带所述上行传输时频资源的子带个数和子带间隔数;
    所述处理器还用于根据所述子带个数、子带间隔数以及所述存储器中存储的上行传输时频资源的OFDM符号数,从所述上行传输时频资源中确定可被所述终端用于上行传输的OFDM符号ID和子带ID;
    所述收发器还用于在所述处理器确定的OFDM符号ID和子带ID对应的上行时频 资源上发送上行信号。
  23. 如权利要求16至19中任一项所述的终端,其特征在于,所述上行传输时频资源被所述网络侧设备分配给至少两个终端,所述终端为这至少两个终端中的一个。
  24. 如权利要求17所述的终端,其特征在于,所述存储器中存储的OFDM符号数、可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系,如下:
    Figure PCTCN2017115662-appb-100013
    预设值时,对应的待传输的上行信号为:参考信号;
    Figure PCTCN2017115662-appb-100014
    预设值时,对应的上行传输的上行信号为:参考信号和控制信号;
    Figure PCTCN2017115662-appb-100015
    对应的上行传输的上行信号为:参考信号和数据信号;
    Figure PCTCN2017115662-appb-100016
    对应的上行传输的上行信号为:参考信号、控制信号和数据信号;
    其中,
    Figure PCTCN2017115662-appb-100017
    为上行传输时频资源占用的正交频分复用OFDM符号数;
    Figure PCTCN2017115662-appb-100018
    为所述上行传输时频资源中可被所述终端用于上行传输的带宽,N1~Nn为正整数。
  25. 一种网络侧设备,其特征在于,包括:
    处理器,用于为终端配置上行传输时频资源;所述上行传输时频资源中包括至少一个正交频分复用OFDM符号;
    收发器,用于向终端发送上行传输指示和所述上行传输时频资源,并接收终端根据所述上行传输指示确定的上行信号;所述上行传输指示包括所述至少一个OFDM符号数与待传输的上行信号之间的对应关系。
  26. 权利要求25所述的网络侧设备,其特征在于,所述上行信号包括如下四种中的任意一种:
    (1)参考信号;
    (2)参考信号和控制信号;
    (3)参考信号和数据信号;
    (4)参考信号,控制信号和数据信号。
  27. 如权利要25或26所述的网络侧设备,其特征在于,所述对应关系还包括:
    所述上行传输时频资源中可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系。
  28. 如权利要求25或26所述的网络侧设备,其特征在于,所述收发器向所述终端发送的所述上行传输指示中还携带所述上行传输时频资源中可被所述终端用于上行传输的OFDM符号ID和子带ID。
  29. 如权利要求25或26所述的网络侧设备,其特征在于,所述收发器向终端发送的所述上行传输指示中还携带所述上行传输时频资源的子带个数和子带间隔数。
  30. 如权利要求26所述的网络侧设备,其特征在于,所述对应关系包括OFDM符号数、可被所述终端用于上行传输的带宽与待传输的上行信号之间的对应关系,如下:
    Figure PCTCN2017115662-appb-100019
    预设值时,对应的待传输的上行信号为:参考信号;
    Figure PCTCN2017115662-appb-100020
    预设值时,对应的上行传输的上行信号为:参考信号和控制信号;
    Figure PCTCN2017115662-appb-100021
    对应的上行传输的上行信号为:参考信号和数据信号;
    Figure PCTCN2017115662-appb-100022
    对应的上行传输的上行信号为:参考信号、控制信号和数据信号;
    其中,
    Figure PCTCN2017115662-appb-100023
    为上行传输时频资源占用的正交频分复用OFDM符号数;
    Figure PCTCN2017115662-appb-100024
    为所述上行传输时频资源中可被所述终端用于上行传输的带宽,N1~Nn为正整数。
  31. 一种通信芯片,其特征在于,包括:
    信号收发电路,用于接收并保存网络侧设备为终端分配的上行传输时频资源;
    存储器,用于保存信号收发电路接收的上行传输时频资源;
    处理电路,当所述终端有上行信号需要发送时,根据存储器保存的上行传输时频资源中的正交频分复用OFDM符号数,确定待传输的上行信号;
    信号收发电路,还用于向所述网络侧设备发送所述处理电路确定的上行信号。
  32. 一种通信芯片,其特征在于,包括:
    信号收发电路,用于接收网络侧设备分配的上行传输时频资源和上行传输指示;所述上行传输指示用于指示所述上行传输时频资源中可被终端用于上行传输的时频资源;
    存储器,用于存储所述信号收发线路接收到的上行传输时频资源和上行传输指示;
    处理电路,当所述终端有上行信号需要发送时,根据信号收发电路接收上行传输时频资源的正交频分复用OFDM符号数和的上行传输指示从所述保存的上行传输时频资源中确定可被所述终端用于上行传输的时频资源;
    信号收发电路,还用于在所述处理电路确定的可被所述终端用于上行传输的上行传输时频资源上传输上行信号。
  33. 一种计算机存储介质,其特征在于,其用于储存权利要求25~30中任一项所述的网络侧设备所用的计算机软件指令,其包含用于执行权利要求25~30中任一项所涉及的程序。
  34. 一种计算机存储介质,其特征在于,其用于储存权利要求16~24中任一项所述的终端所用的计算机软件指令,其包含用于执行权利要求16~24中任一项所涉及的程序。
  35. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有指令,当其在计算机上运行时,使得计算机执行权利要求1~15中任一项所述的方法。
  36. 一种包含指令的计算机程序产品,其特征在于,当其在计算机上运行时,使得计算机执行权利要求1~15中任一项所述的方法。
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