WO2019214637A1 - 非周期跟踪参考信号的接收方法及终端 - Google Patents

非周期跟踪参考信号的接收方法及终端 Download PDF

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Publication number
WO2019214637A1
WO2019214637A1 PCT/CN2019/085983 CN2019085983W WO2019214637A1 WO 2019214637 A1 WO2019214637 A1 WO 2019214637A1 CN 2019085983 W CN2019085983 W CN 2019085983W WO 2019214637 A1 WO2019214637 A1 WO 2019214637A1
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WIPO (PCT)
Prior art keywords
reference signal
tracking reference
receiving
terminal
secondary cell
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PCT/CN2019/085983
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English (en)
French (fr)
Inventor
司晔
孙鹏
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维沃移动通信有限公司
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP19800430.1A priority Critical patent/EP3793254A4/en
Publication of WO2019214637A1 publication Critical patent/WO2019214637A1/zh
Priority to US17/092,097 priority patent/US11509444B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0085—Timing of allocation when channel conditions change
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink

Definitions

  • Some embodiments of the present disclosure relate to the field of wireless communications technologies, and in particular, to a method and a terminal for receiving a non-periodic tracking reference signal.
  • Carrier aggregation is the aggregation of two or more component carriers (CCs) to support a larger transmission bandwidth.
  • CCs component carriers
  • each carrier unit corresponds to a separate cell.
  • the cells in the carrier aggregation can be divided into a primary cell (PCell) and a secondary cell (SCell).
  • the primary cell is a cell in which the terminal (UE) performs initial connection establishment, and is responsible for radio resource control (RRC) communication with the UE.
  • RRC radio resource control
  • the secondary cell is added during RRC reconfiguration to provide additional radio resources, and there is no RRC communication between the secondary cell and the UE.
  • the primary cell of the UE is always in an active state, and does not support activation and deactivation; the secondary cell needs activation and deactivation, and activation and deactivation through a Media Access Control (MAC) control unit (Control Element, CE) Signaling execution.
  • MAC Media Access Control
  • the periodic period TRS is configured to perform the time-frequency tracking of the secondary cell, before the MAC CE signaling takes effect, if the periodic TRS has been received, the next TRS period must be waited for (the delay can be up to one TRS).
  • the TRS receives the TRS and performs time-frequency tracking on the downlink channel of the secondary cell, resulting in waste of resources.
  • Some embodiments of the present disclosure provide a method and a terminal for receiving a non-periodic tracking reference signal, so as to solve the problem that the time-frequency tracking is performed on the secondary cell by using the periodic TRS, which has poor flexibility and wastes resources.
  • some embodiments of the present disclosure provide a method for receiving a non-periodic tracking reference signal, which is applied to a terminal, where the method includes:
  • downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell
  • the aperiodic tracking reference signal is determined to be effective, and the effective condition includes at least: a receiving moment of the aperiodic tracking reference signal, and completing the radio frequency in the terminal and the secondary cell After tuning.
  • some embodiments of the present disclosure provide a terminal, including:
  • a first receiving module configured to receive downlink control information, where the downlink control information includes information used to trigger a non-periodic tracking reference signal in the secondary cell;
  • a second receiving module configured to receive a non-periodic tracking reference signal in the secondary cell according to the downlink control information
  • a processing module configured to determine that the aperiodic tracking reference signal is valid if the condition of the aperiodic tracking reference signal is met, the effective condition includes at least: a receiving moment of the aperiodic tracking reference signal, at the terminal and the After the secondary cell completes the radio frequency tuning.
  • some embodiments of the present disclosure provide a terminal including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program being The step of implementing the above-described method of receiving the aperiodic tracking reference signal at the time of execution.
  • some embodiments of the present disclosure provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements reception of the aperiodic tracking reference signal The steps of the method.
  • the non-periodic tracking reference signal is used for time-frequency tracking of the secondary cell, and the aperiodic tracking reference signal can be triggered as needed, which solves the problem that the periodic tracking reference signal has poor flexibility, and at the same time, the available non- The receiving time of the periodic tracking reference signal is clarified, so that the time-frequency tracking of the secondary cell can be performed according to the available aperiodic tracking reference signals, thereby improving communication accuracy and performance.
  • FIG. 1 is a schematic structural diagram of a wireless communication system provided by the present disclosure
  • FIG. 2 is a schematic flow chart of a method for receiving a non-periodic tracking reference signal according to the present disclosure
  • FIG. 3 is another schematic flowchart of a method for receiving a non-periodic tracking reference signal according to the present disclosure
  • FIG. 4 is a schematic diagram 1 of a receiving moment of a non-periodic tracking reference signal according to the present disclosure
  • FIG. 5 is a second schematic diagram of a receiving moment of a non-periodic tracking reference signal according to the present disclosure
  • FIG. 6 is a schematic diagram 3 of a receiving moment of a non-periodic tracking reference signal according to the present disclosure
  • FIG. 7 is a schematic diagram 4 of a receiving moment of a non-periodic tracking reference signal according to the present disclosure
  • FIG. 8 is a schematic flowchart diagram of a method for receiving a non-periodic tracking reference signal according to the present disclosure
  • FIG. 9 is a schematic structural diagram of a terminal according to the present disclosure.
  • FIG. 10 is a schematic structural diagram 2 of a terminal of the present disclosure.
  • FIG. 11 is a schematic structural diagram 3 of the terminal of the present disclosure.
  • the words “exemplary” or “such as” are used to mean an example, illustration, or illustration. Any embodiment or design described as “exemplary” or “for example” in some embodiments of the present disclosure should not be construed as being more optional or advantageous over other embodiments or designs. Rather, the use of the words “exemplary” or “such as” is intended to present the concepts in a particular manner.
  • the receiving method and terminal of the aperiodic tracking reference signal provided by some embodiments of the present disclosure may be applied to a wireless communication system.
  • the wireless communication system may be a 5G system, or an Evolved Long Term Evolution (eLTE) system, or a subsequent evolved communication system.
  • eLTE Evolved Long Term Evolution
  • the wireless communication system may include: a network side device 10 and a terminal, for example, the terminal is referred to as a UE 11, and the UE 11 may be connected to the network side device 10.
  • the connection between the foregoing devices may be a wireless connection.
  • a solid line is illustrated in FIG.
  • the foregoing communication system may include multiple UEs, network side devices, and may communicate with multiple UEs (transmit signaling or transmit data).
  • the network side device 10 may be a base station, which may be a commonly used base station, an evolved node base station (eNB), or a network side device in a 5G system. (For example, a next generation node base station (gNB) or a transmission and reception point (TRP)) or a cell cell. Or a network side device in a subsequent evolution communication system.
  • a base station which may be a commonly used base station, an evolved node base station (eNB), or a network side device in a 5G system.
  • gNB next generation node base station
  • TRP transmission and reception point
  • gNB next generation node base station
  • TRP transmission and reception point
  • the terminal may be a mobile phone, a tablet computer, a notebook computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA).
  • UMPC Ultra-Mobile Personal Computer
  • PDA Personal Digital Assistant
  • FIG. 1 is a schematic flowchart of a method for receiving a non-periodic tracking reference signal according to the disclosure.
  • the receiving method is applied to a terminal, and includes:
  • Step 21 Receive downlink control information, where the downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell.
  • the aperiodic tracking reference signal in the secondary cell may be triggered by a CSI request field in DCI Format 0-1.
  • the secondary cell may be self-carrier scheduling or cross-carrier scheduling
  • the secondary cell if the secondary cell is configured as a self-scheduled cell, the secondary cell control information and data information are in the secondary cell. transmission. If the secondary cell is configured for cross-carrier scheduling, the control information of the secondary cell is transmitted in other cells (such as the primary cell), and the data information is transmitted in the secondary cell. Therefore, the downlink control information in some embodiments of the present disclosure may be received by the primary cell or may be received by the secondary cell.
  • Step 22 Receive an aperiodic tracking reference signal in the secondary cell according to the downlink control information.
  • the aperiodic tracking reference signal is transmitted in a Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • Step 23 judging whether the valid condition of the aperiodic tracking reference signal is met, if yes, proceeding to step 24, otherwise, proceeding to step 25; the effective condition includes at least: receiving time of the aperiodic tracking reference signal at the terminal After the radio frequency tuning is completed with the secondary cell.
  • the terminal and the secondary cell complete radio frequency tuning which refers to a moment when the terminal and the secondary cell complete radio frequency tuning.
  • Step 24 If the valid condition of the aperiodic tracking reference signal is met, determining that the aperiodic tracking reference signal is valid;
  • Step 25 If the valid condition of the aperiodic tracking reference signal is not met, it is determined that the aperiodic tracking reference signal is not valid.
  • aperiodic tracking reference signal is valid, which means that the non-periodic tracking reference signal is available, which can be used for time-frequency tracking of the secondary cell.
  • the so-called aperiodic tracking reference signal does not take effect. It means that the aperiodic tracking reference signal is not available and cannot be used for time-frequency tracking of the secondary cell.
  • the so-called radio frequency tuning means that after the transmitting end transmits the modulated signal, the receiving end has the best effect in receiving the signal, so that the receiver resonates with the signal. At this time, the received signal has the best effect, and the interference of other clutter is small.
  • the terminal does not expect to receive the aperiodic tracking reference signal before completing the radio frequency tuning with the secondary cell, because the signal received by the terminal is not ideal before the terminal and the secondary cell complete the radio frequency tuning, and the interference of the clutter is better.
  • the signal received by the terminal is good, and the received aperiodic tracking reference signal can be used as an available aperiodic tracking reference signal, otherwise it is used as an unavailable aperiodic tracking reference signal.
  • aperiodic tracking reference signals have been agreed at the 3GPP RAN1 92bis conference.
  • aperiodic tracking reference signals are supported as an optional terminal function.
  • the terminal does not expect to be triggered by the aperiodic tracking reference signal unless the terminal has configured an associated periodic TRS having the same burst length at the same BWP.
  • the burst can be called a burst.
  • the aperiodic tracking reference signal has the same bandwidth, symbol position, subcarrier position, and burst length as the associated periodic TRS.
  • the quasi-co-location (QCL) relationship between the aperiodic tracking reference signal and the associated periodic TRS is: QCL type A+D.
  • the non-periodic tracking reference signal is used to perform time-frequency tracking on the secondary cell, and the aperiodic tracking reference signal is triggered by the downlink control information. Therefore, the UE can receive the aperiodic tracking reference signal in time, and when the secondary cell is performed. Frequency tracking does not have to wait for the next cycle to arrive like the periodic TRS, which solves the problem of poor flexibility of the periodic tracking reference signal. At the same time, the receiving moment of the available aperiodic tracking reference signal is clarified, so that it can be tracked according to the available aperiodic tracking.
  • the reference signal is used to perform time-frequency tracking of the secondary cell, which improves communication accuracy and performance.
  • FIG. 3 is another schematic flowchart of a method for receiving a non-periodic tracking reference signal according to the disclosure.
  • the receiving method is applied to a terminal, and includes:
  • Step 31 Receive configuration information, where the configuration information includes at least: time offset information (A-TRS time offset) of the receiving moment of the downlink control information and the receiving moment of the aperiodic tracking reference signal;
  • A-TRS time offset time offset information
  • the network side device may send configuration information by using RRC signaling, where the configuration information may further include: a number of bits of the aperiodic tracking reference signal in the secondary cell, and/or the aperiodic tracking Information such as the frequency domain position of the reference signal.
  • Step 32 Receive downlink control information, where the downlink control information includes information used to trigger a non-periodic tracking reference signal in the secondary cell.
  • Step 33 Determine a receiving moment of the aperiodic tracking reference signal according to the receiving moment of the downlink control information and the time offset information, and receive the aperiodic in the secondary cell at the determined receiving moment. Track the reference signal.
  • Step 34 Determine whether the valid condition of the aperiodic tracking reference signal is met, and if yes, go to step 35, otherwise, go to step 36; the effective condition includes at least: the receiving time of the aperiodic tracking reference signal, at the terminal After the radio frequency tuning is completed with the secondary cell.
  • Step 35 If the valid condition of the aperiodic tracking reference signal is met, determining that the aperiodic tracking reference signal is valid;
  • Step 36 If the valid condition of the aperiodic tracking reference signal is not met, it is determined that the aperiodic tracking reference signal is not valid.
  • the non-period may be determined according to the time offset information of the receiving time of the downlink control information and the receiving time of the aperiodic tracking reference signal carried in the received configuration information, and the receiving time of the downlink control information.
  • the reception timing of the reference signal is tracked, thereby accurately receiving the aperiodic tracking reference signal.
  • the receiving time of the aperiodic tracking reference signal is used as a condition for determining whether the received aperiodic tracking reference signal is valid.
  • the downlink control information may also be used.
  • the receiving time is another condition for determining whether the received aperiodic tracking reference signal is valid.
  • the effective condition may further be: the receiving moment of the downlink control information is after a preset time.
  • the preset moment may be one of the following moments:
  • the acknowledgment signaling is used to confirm that the MAC CE signaling is received
  • the preset moment may also be other moments.
  • the receiving time of the downlink control information may not be used as a condition for determining whether the received aperiodic tracking reference signal is valid, and the non-periodic tracking reference signal may be used.
  • Downlink control information can be received at any time.
  • the terminal does not perform operations on the secondary cell according to the received downlink control information, such as a handover operation of the secondary cell or an RF retuning operation of the secondary cell.
  • a method for receiving a non-periodic tracking reference signal according to Example 1 of the present disclosure includes:
  • Step 41 The terminal receives the MAC CE signaling (activation command) in the primary cell, where the MAC CE signaling includes indication information for activating the secondary cell.
  • the network side device On the network side device corresponding to the primary cell, the network side device generates MAC CE signaling at the MAC layer, where the MAC CE signaling includes indication information for activating the secondary cell, and the MAC layer sends the MAC CE signaling to the physical layer. Layer, transmitted by the physical layer in the PDSCH.
  • the terminal After receiving the physical layer information sent by the network side device, the terminal correctly receives the physical layer information through a process such as channel estimation, equalization, or decoding.
  • Step 42 The terminal receives downlink control information (DCI), where the downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell, where the DCI trigger timing is in the MAC. After the reception time of CE signaling.
  • DCI downlink control information
  • the network side device corresponding to the primary cell sends the downlink control information to the terminal according to the sending time of the downlink control information.
  • the terminal blindly checks the downlink control information and receives it.
  • the terminal does not expect to receive downlink control information prior to the reception time of the MAC CE signaling. If the terminal receives the downlink control information before the receiving time of the MAC CE signaling, it determines that the received aperiodic tracking reference signal is not valid. If the terminal receives the downlink control information after receiving the MAC CE signaling, it determines that the received aperiodic tracking reference signal is valid.
  • Step 43 The terminal sends an acknowledgement (ACK) signaling, and the acknowledgement signaling is used to confirm that the MAC CE signaling is received.
  • ACK acknowledgement
  • the terminal After correctly receiving the physical layer information sent by the network side device, the terminal sends the ACK signaling to the network side device.
  • Step 44 After the MAC CE message is applied, the terminal starts to activate the secondary cell.
  • the protocol stipulates that the time from when the terminal sends ACK signaling to the MAC CE signaling takes effect is 3 ms. After the MAC CE signaling takes effect, the secondary cell starts to be activated, that is, the terminal starts to perform radio frequency tuning with the secondary cell.
  • Step 45 The terminal and the secondary cell complete radio frequency tuning.
  • Step 46 The terminal receives the aperiodic tracking reference signal in the secondary cell according to the received downlink control information, and the time offset of the receiving time of the downlink control information and the receiving time of the aperiodic tracking reference signal.
  • Step 47 The terminal determines whether the valid condition of the aperiodic tracking reference signal is met. If yes, go to step 48. Otherwise, go to step 49.
  • the effective condition includes: the DCI trigger timing of the downlink control information is in the MAC. After the receiving moment of the CE signaling, and the receiving moment of the aperiodic tracking reference signal, after the terminal and the secondary cell complete the radio frequency tuning.
  • Step 48 If the valid condition of the aperiodic tracking reference signal is met, determining that the aperiodic tracking reference signal is valid;
  • Step 49 If the valid condition of the aperiodic tracking reference signal is not met, it is determined that the aperiodic tracking reference signal is not valid.
  • a method for receiving a non-periodic tracking reference signal according to example 2 of the present disclosure includes:
  • Step 51 The terminal receives a MAC CE signaling (activation command) in the primary cell, where the MAC CE signaling includes indication information for activating the secondary cell.
  • the network side device On the network side device corresponding to the primary cell, the network side device generates MAC CE signaling at the MAC layer, where the MAC CE signaling includes indication information for activating the secondary cell, and the MAC layer sends the MAC CE signaling to the physical layer. Layer, transmitted by the physical layer in the PDSCH.
  • the terminal After receiving the physical layer information sent by the network side device, the terminal correctly receives the physical layer information through a process such as channel estimation, equalization, or decoding.
  • Step 52 The terminal sends an acknowledgement (ACK) signaling, and the acknowledgement signaling is used to confirm that the MAC CE signaling is received.
  • ACK acknowledgement
  • the terminal After correctly receiving the physical layer information sent by the network side device, the terminal sends the ACK signaling to the network side device.
  • Step 53 The terminal receives downlink control information (DCI), where the downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell, where the downlink control information receiving time (DCI trigger timing) is confirmed. After the transmission time of the signaling.
  • DCI downlink control information
  • the network side device corresponding to the primary cell sends the downlink control information to the terminal according to the sending time of the downlink control information.
  • the terminal blindly checks the downlink control information and receives it.
  • the terminal does not expect to receive downlink control information prior to the transmission timing of the acknowledgment signaling. If the terminal receives the downlink control information before the transmission timing of the acknowledgment signaling, it determines that the received aperiodic tracking reference signal is not valid. If the terminal receives the downlink control information after the transmission timing of the acknowledgment signaling, it determines that the received aperiodic tracking reference signal is valid.
  • Step 54 After the MAC CE message is applied, the terminal starts to activate the secondary cell.
  • the protocol stipulates that the time from when the terminal sends ACK signaling to the MAC CE signaling takes effect is 3 ms. After the MAC CE signaling takes effect, the secondary cell starts to be activated, that is, the terminal starts to perform radio frequency tuning with the secondary cell.
  • Step 55 The terminal and the secondary cell complete radio frequency tuning.
  • Step 56 The terminal receives the aperiodic tracking reference signal in the secondary cell according to the received downlink control information, and the time offset of the receiving time of the downlink control information and the receiving time of the aperiodic tracking reference signal.
  • Step 57 The terminal determines whether the valid condition of the aperiodic tracking reference signal is met. If yes, go to step 58, otherwise, go to step 59; the effective condition includes: the DCI trigger timing of the downlink control information is sent. After the time of the confirmation command, and the reception time of the aperiodic tracking reference signal, after the terminal and the secondary cell complete the radio frequency tuning.
  • Step 58 If the valid condition of the aperiodic tracking reference signal is met, determining that the aperiodic tracking reference signal is valid;
  • Step 59 If the valid condition of the aperiodic tracking reference signal is not met, it is determined that the aperiodic tracking reference signal is not valid.
  • a method for receiving a non-periodic tracking reference signal of Example 3 of the present disclosure includes:
  • Step 61 The terminal receives a MAC CE signaling (activation command) in the primary cell, where the MAC CE signaling includes indication information for activating the secondary cell.
  • the network side device On the network side device corresponding to the primary cell, the network side device generates MAC CE signaling at the MAC layer, where the MAC CE signaling includes indication information for activating the secondary cell, and the MAC layer sends the MAC CE signaling to the physical layer. Layer, transmitted by the physical layer in the PDSCH.
  • the terminal After receiving the physical layer information sent by the network side device, the terminal correctly receives the physical layer information through a process such as channel estimation, equalization, or decoding.
  • Step 62 The terminal sends an acknowledgement (ACK) signaling, where the acknowledgement signaling is used to confirm that the MAC CE signaling is received.
  • ACK acknowledgement
  • the terminal After correctly receiving the physical layer information sent by the network side device, the terminal sends the ACK signaling to the network side device.
  • Step 63 After the MAC CE message is applied, the terminal starts to activate the secondary cell.
  • the protocol stipulates that the time from when the terminal sends ACK signaling to the MAC CE signaling takes effect is 3 ms. After the MAC CE signaling takes effect, the secondary cell starts to be activated, that is, the terminal starts to perform radio frequency tuning with the secondary cell.
  • Step 64 The terminal receives downlink control information (DCI), where the downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell, where the downlink control information receiving time (DCI trigger timing) is confirmed. After the transmission time of the signaling.
  • DCI downlink control information
  • the network side device corresponding to the primary cell sends the downlink control information to the terminal according to the sending time of the downlink control information.
  • the terminal blindly checks the downlink control information and receives it.
  • the terminal does not expect to receive downlink control information before the moment when the MAC CE signaling is in effect. If the terminal receives the downlink control information before the time when the MAC CE signaling takes effect, it determines that the received aperiodic tracking reference signal is not valid. If the terminal receives the downlink control information after the time when the MAC CE signaling takes effect, it determines that the received aperiodic tracking reference signal is valid.
  • Step 65 The terminal and the secondary cell complete radio frequency tuning.
  • Step 66 The terminal receives the aperiodic tracking reference signal in the secondary cell according to the received downlink control information, and the time offset of the receiving time of the downlink control information and the receiving time of the aperiodic tracking reference signal.
  • Step 67 The terminal determines whether the valid condition of the aperiodic tracking reference signal is met, and if yes, proceeds to step 68, otherwise, proceeds to step 69; the effective condition includes: the DCI trigger timing of the downlink control information is in the After the moment when the MAC CE signaling takes effect, and the receiving moment of the aperiodic tracking reference signal, after the terminal and the secondary cell complete the radio frequency tuning.
  • Step 68 If the valid condition of the aperiodic tracking reference signal is met, determining that the aperiodic tracking reference signal is valid;
  • Step 69 If the valid condition of the aperiodic tracking reference signal is not met, it is determined that the aperiodic tracking reference signal is not valid.
  • a method for receiving a non-periodic tracking reference signal of Example 4 of the present disclosure includes:
  • Step 71 The terminal receives the MAC CE signaling (activation command) in the primary cell, where the MAC CE signaling includes indication information for activating the secondary cell.
  • the network side device On the network side device corresponding to the primary cell, the network side device generates MAC CE signaling at the MAC layer, where the MAC CE signaling includes indication information for activating the secondary cell, and the MAC layer sends the MAC CE signaling to the physical layer. Layer, transmitted by the physical layer in the PDSCH.
  • the terminal After receiving the physical layer information sent by the network side device, the terminal correctly receives the physical layer information through a process such as channel estimation, equalization, or decoding.
  • Step 72 The terminal sends an acknowledgement (ACK) signaling, and the acknowledgement signaling is used to confirm that the MAC CE signaling is received.
  • ACK acknowledgement
  • the terminal After correctly receiving the physical layer information sent by the network side device, the terminal sends the ACK signaling to the network side device.
  • Step 73 After the MAC CE message is applied, the terminal starts to activate the secondary cell.
  • the protocol stipulates that the time from when the terminal sends ACK signaling to the MAC CE signaling takes effect is 3 ms. After the MAC CE signaling takes effect, the secondary cell starts to be activated, that is, the terminal starts to perform radio frequency tuning with the secondary cell.
  • Step 74 The terminal and the secondary cell complete radio frequency tuning.
  • Step 75 The terminal receives downlink control information (DCI), where the downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell, where the downlink control information receiving time (DCI trigger timing) is confirmed. After the transmission time of the signaling.
  • DCI downlink control information
  • the network side device corresponding to the primary cell sends the downlink control information to the terminal according to the sending time of the downlink control information.
  • the terminal blindly checks the downlink control information and receives it.
  • the terminal does not expect to receive downlink control information before the time at which the terminal and the secondary cell complete the radio frequency tuning. If the terminal receives the downlink control information before the time when the terminal and the secondary cell complete the radio frequency tuning, it is determined that the received aperiodic tracking reference signal is not valid. If the terminal receives the downlink control information after the terminal and the secondary cell complete the radio frequency tuning, it determines that the received aperiodic tracking reference signal is valid.
  • Step 76 The terminal receives the aperiodic tracking reference signal in the secondary cell according to the received downlink control information, and the time offset of the receiving time of the downlink control information and the receiving time of the aperiodic tracking reference signal.
  • Step 77 The terminal determines whether the valid condition of the aperiodic tracking reference signal is met. If yes, go to step 78. Otherwise, go to step 79.
  • the effective condition includes: the DCI trigger timing of the downlink control information is at the terminal. After the time when the secondary cell completes the radio frequency tuning, and the receiving time of the aperiodic tracking reference signal is after the terminal and the secondary cell complete the radio frequency tuning.
  • Step 78 If the valid condition of the aperiodic tracking reference signal is met, determining that the aperiodic tracking reference signal is valid;
  • Step 79 If the valid condition of the aperiodic tracking reference signal is not met, it is determined that the aperiodic tracking reference signal is not valid.
  • a method for receiving a non-periodic tracking reference signal of Example 5 of the present disclosure includes:
  • Step 81 Receive downlink control information, where the downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell.
  • Step 82 Receive, according to the downlink control information, a non-periodic tracking reference signal in the secondary cell.
  • Step 83 Determine whether the receiving time of the aperiodic tracking reference signal is after the terminal and the secondary cell complete the radio frequency tuning, and if yes, determine that the valid condition of the aperiodic tracking reference signal is met, proceed to step 84; otherwise, Determining that the valid condition of the aperiodic tracking reference signal is not met, proceeding to step 85;
  • Step 84 If the valid condition of the aperiodic tracking reference signal is met, determining that the aperiodic tracking reference signal is valid;
  • Step 85 If the valid condition of the aperiodic tracking reference signal is not met, it is determined that the aperiodic tracking reference signal is not valid.
  • the effective condition of the aperiodic tracking reference signal has no relationship with the receiving moment of the downlink control information, and is only related to the receiving moment of the aperiodic tracking reference signal, that is, if the terminal is in the secondary cell Before receiving the radio frequency tuning, receiving the aperiodic tracking reference signal, determining that the received aperiodic tracking reference signal is not valid, and if the terminal completes radio frequency tuning with the secondary cell, receiving the aperiodic tracking The reference signal determines that the received aperiodic tracking reference signal is valid.
  • the receiving time of the downlink control information is not limited, after receiving the downlink control information, the terminal does not perform operations on the secondary cell according to the downlink control information, such as a secondary cell. Switching or radio frequency adjustment of the secondary cell.
  • Some embodiments of the present disclosure further provide a terminal 90, including:
  • the first receiving module 91 is configured to receive downlink control information, where the downlink control information includes information used to trigger a non-periodic tracking reference signal in the secondary cell;
  • the second receiving module 92 is configured to receive, according to the downlink control information, an aperiodic tracking reference signal in the secondary cell.
  • the processing module 93 is configured to determine that the aperiodic tracking reference signal is valid if the valid condition of the aperiodic tracking reference signal is met, and the effective condition includes at least: a receiving moment of the aperiodic tracking reference signal, at the terminal and After the secondary cell completes the radio frequency tuning.
  • the validating condition further includes: the receiving moment of the downlink control information is after a preset time.
  • the preset moment is one of the following moments:
  • the acknowledgment signaling is used to confirm receipt of the MAC CE signaling
  • the terminal further includes:
  • a third receiving module configured to receive configuration information, where the configuration information includes: time delay information of a receiving moment of the downlink control information and a receiving moment of the aperiodic tracking reference signal;
  • the second receiving module is further configured to determine, according to the receiving moment of the downlink control information and the time offset information, a receiving moment of the aperiodic tracking reference signal; at the determined receiving moment, The secondary cell receives the aperiodic tracking reference signal.
  • the terminal provided by some embodiments of the present disclosure can implement various processes implemented by the terminal in the method embodiments of FIG. 1 to FIG. 7. To avoid repetition, details are not described herein again.
  • FIG. 10 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal 100 includes, but is not limited to, a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, and a display unit. 106.
  • the terminal structure shown in FIG. 10 does not constitute a limitation to the terminal, and the terminal may include more or less components than those illustrated, or some components may be combined, or different component arrangements.
  • the terminal includes, but is not limited to, a mobile phone, a tablet, a notebook, a palmtop, an in-vehicle terminal, a wearable device, a pedometer, and the like.
  • the radio frequency unit 101 is configured to receive downlink control information, where the downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell, and receiving, according to the downlink control information, aperiodic tracking in the secondary cell.
  • the downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell
  • the processor 1010 is configured to determine that the aperiodic tracking reference signal is valid if the condition for validating the aperiodic tracking reference signal is met, where the effective condition includes at least: a receiving moment of the aperiodic tracking reference signal, at the terminal and After the secondary cell completes the radio frequency tuning.
  • the non-periodic tracking reference signal is used for time-frequency tracking of the secondary cell, and the aperiodic tracking reference signal can be triggered as needed, which solves the problem of poor flexibility of the periodic tracking reference signal, and at the same time, the available aperiodic The receiving time of the tracking reference signal is clarified, so that the time-frequency tracking of the secondary cell can be performed according to the available aperiodic tracking reference signals, thereby improving communication accuracy and performance.
  • the radio frequency unit 101 may be configured to receive and transmit signals during or after receiving or transmitting information, and specifically, after receiving downlink data from the base station, processing the processor 1010; Send the uplink data to the base station.
  • radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio unit 101 can also communicate with the network and other devices through a wireless communication system.
  • the terminal provides the user with wireless broadband Internet access through the network module 102, such as helping the user to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 103 can convert the audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output as sound. Moreover, the audio output unit 103 can also provide audio output (eg, call signal reception sound, message reception sound, etc.) related to a specific function performed by the terminal 100.
  • the audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 104 is for receiving an audio or video signal.
  • the input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042 that images an still picture or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode.
  • the data is processed.
  • the processed image frame can be displayed on the display unit 106.
  • the image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio unit 101 or the network module 102.
  • the microphone 1042 can receive sound and can process such sound as audio data.
  • the processed audio data can be converted to a format output that can be transmitted to the mobile communication base station via the radio unit 101 in the case of a telephone call mode.
  • Terminal 100 also includes at least one type of sensor 105, such as a light sensor, motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light, and the proximity sensor can close the display panel 1061 and/or when the terminal 100 moves to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity.
  • sensor 105 may also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be described here.
  • the display unit 106 is for displaying information input by the user or information provided to the user.
  • the display unit 106 can include a display panel 1061.
  • the display panel 1061 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the user input unit 107 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the terminal.
  • the user input unit 107 includes a touch panel 1071 and other input devices 1072.
  • the touch panel 1071 also referred to as a touch screen, can collect touch operations on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 1071 or near the touch panel 1071. operating).
  • the touch panel 1071 may include two parts of a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information.
  • the processor 1010 receives the commands from the processor 1010 and executes them.
  • the touch panel 1071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the user input unit 107 may also include other input devices 1072.
  • the other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick, which are not described herein.
  • the touch panel 1071 can be overlaid on the display panel 1061. After the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits to the processor 1010 to determine the type of the touch event, and then the processor 1010 according to the touch. The type of event provides a corresponding visual output on display panel 1061.
  • the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated. The input and output functions of the terminal are implemented, and are not limited herein.
  • the interface unit 108 is an interface in which an external device is connected to the terminal 100.
  • the external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, and an audio input/output. (I/O) port, video I/O port, headphone port, and more.
  • the interface unit 108 can be configured to receive input from an external device (eg, data information, power, etc.) and transmit the received input to one or more components within the terminal 100 or can be used between the terminal 100 and an external device transfer data.
  • Memory 109 can be used to store software programs as well as various data.
  • the memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.).
  • the memory 109 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the processor 1010 is a control center of the terminal, which connects various parts of the entire terminal using various interfaces and lines, and executes by executing or executing software programs and/or modules stored in the memory 109, and calling data stored in the memory 109.
  • the processor 1010 may include one or more processing units; optionally, the processor 1010 may integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, an application, etc., and a modulation solution
  • the processor mainly handles wireless communication. It will be appreciated that the above described modem processor may also not be integrated into the processor 1010.
  • the terminal 100 may further include a power source 1011 (such as a battery) for supplying power to various components.
  • a power source 1011 such as a battery
  • the power source 1011 may be logically connected to the processor 1010 through a power management system to manage charging, discharging, and power management through the power management system. And other functions.
  • the terminal 100 includes some functional modules not shown, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of a terminal according to another embodiment of the present disclosure.
  • the terminal 110 includes a processor 111 and a memory 112.
  • the terminal 110 further includes: a computer program stored on the memory 112 and executable on the processor 111, the computer program being executed by the processor 111 to implement the following steps:
  • downlink control information includes information for triggering a non-periodic tracking reference signal in the secondary cell
  • the aperiodic tracking reference signal is determined to be effective, and the effective condition includes at least: a receiving moment of the aperiodic tracking reference signal, and completing the radio frequency in the terminal and the secondary cell After tuning.
  • the processor 111 is responsible for managing the bus architecture and general processing, and the memory 112 can store data used by the processor 111 in performing operations.
  • the validating condition further includes: the receiving moment of the downlink control information is after a preset time.
  • the preset moment is one of the following moments:
  • the medium access control layer control unit receives the indication of the MAC CE signaling, where the MAC CE signaling includes an indication for activating the secondary cell;
  • the acknowledgment signaling is used to confirm receipt of the MAC CE signaling
  • the following steps may be further implemented: before the step of receiving the downlink control information, the method further includes:
  • Receiving configuration information where the configuration information includes at least: time offset information of a receiving moment of the downlink control information and a receiving moment of the aperiodic tracking reference signal;
  • the step of receiving the aperiodic tracking reference signal in the secondary cell according to the downlink control information includes:
  • Some embodiments of the present disclosure also provide a computer readable storage medium storing a computer program on a method of implementing the method for receiving the aperiodic tracking reference signal when the computer program is executed by a processor
  • the various processes of the example can achieve the same technical effect. To avoid repetition, no further details are provided here.
  • the computer readable storage medium may be a volatile computer readable storage medium or a nonvolatile computer readable storage medium such as Read-Only Memory (ROM), random access. Memory (Random Access Memory, RAM for short), disk or CD.
  • the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better.
  • Implementation Based on such understanding, the technical solution of the present disclosure, which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM).
  • the instructions include a number of instructions for causing a terminal (which may be a cell phone, computer, server, air conditioner, or network device, etc.) to perform the methods described in various embodiments of the present disclosure.

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Abstract

本公开提供一种非周期跟踪参考信号的接收方法及终端，该方法包括：接收下行控制信息，下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；根据下行控制信息，在辅小区接收非周期跟踪参考信号；若满足非周期跟踪参考信号的生效条件，判定非周期跟踪参考信号生效，生效条件至少包括：非周期跟踪参考信号的接收时刻，在终端与辅小区完成射频调谐之后。

Description

非周期跟踪参考信号的接收方法及终端
相关申请的交叉引用
本申请主张在2018年5月9日在中国提交的中国专利申请号No.201810438201.8的优先权，其全部内容通过引用包含于此。
技术领域
本公开的一些实施例涉及无线通信技术领域，尤其涉及一种非周期跟踪参考信号的接收方法及终端。
背景技术
面向未来的第五代(5Generation，5G)移动通信系统中，为了提高系统的可靠性，需要根据参考信号，对系统的频率偏移，时间偏移，多普勒频移，多普勒扩展，时延扩展进行精确的估计。同时为了减小开销，避免占用时频资源较多的参考信号(例如小区参考信号(Cell Reference Signal，CRS))的出现，引入了一种新的参考信号，也即跟踪参考信号(tracking reference signal，TRS)。在接收端，可以根据TRS来精确估计信道参数，提高解调的准确度。
为了提高频谱效率，满足更大峰值速率的需求，提出了载波聚合的技术。载波聚合是将2个或更多成员载波(Component Carrier，CC)聚合在一起，以支持更大的传输带宽。实际上，每个载波单元对应一个独立的小区。载波聚合中的小区可分为主小区(Primary Cell，PCell)与辅小区(Secondary Cell，SCell)。主小区是终端(UE)进行初始连接建立的小区，负责与UE间的无线资源控制(Radio Resource Control，RRC)通信。辅小区是在RRC重新配置时添加的，用于提供额外的无线资源，辅小区与UE间不存在任何RRC通信。UE的主小区总处于激活态，不支持激活与去激活；而辅小区需要激活与去激活，激活与去激活通过媒体接入控制层(Media Access Control，MAC)控制单元(Control Element，CE)信令执行。
在辅小区激活时，如果配置周期TRS进行辅小区的时频跟踪，MAC CE信令生效之前，如果已经接收周期TRS，此时，还需等到下一个TRS周期(时 延最长可达一个TRS周期)接收TRS，对辅小区的下行信道进行时频跟踪，造成资源浪费。
发明内容
本公开的一些实施例提供一种非周期跟踪参考信号的接收方法及终端，以解决采用周期TRS对辅小区进行时频跟踪，灵活性差，造成资源浪费的问题。
为了解决上述技术问题，本公开是这样实现的：
第一方面，本公开的一些实施例提供了一种非周期跟踪参考信号的接收方法，应用于终端，所述方法包括：
接收下行控制信息，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；
根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号；
若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效，所述生效条件至少包括：所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
第二方面，本公开的一些实施例提供了一种终端，包括：
第一接收模块，用于接收下行控制信息，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；
第二接收模块，用于根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号；
处理模块，用于若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效，所述生效条件至少包括：所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
第三方面，本公开的一些实施例提供了一种终端，包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现上述非周期跟踪参考信号的接收方法的步骤。
第四方面，本公开的一些实施例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上存储计算机程序，所述计算机程序被处理器执行时实 现上述非周期跟踪参考信号的接收方法的步骤。
在本公开的一些实施例中，采用非周期跟踪参考信号对辅小区进行时频跟踪，非周期跟踪参考信号能够根据需要触发，解决了周期跟踪参考信号灵活性差的问题，同时，对可用的非周期跟踪参考信号的接收时刻进行了明确，从而可以根据可用的非周期跟踪参考信号，进行辅小区的时频跟踪，提高了通信准确性和效能。
附图说明
通过阅读下文可选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出可选实施方式的目的，而并不认为是对本公开的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1为本公开提供的无线通信系统的架构示意图；
图2为本公开的非周期跟踪参考信号的接收方法的流程示意图；
图3为本公开的非周期跟踪参考信号的接收方法的另一流程示意图；
图4为本公开的非周期跟踪参考信号的接收时刻的示意图一；
图5为本公开的非周期跟踪参考信号的接收时刻的示意图二；
图6为本公开的非周期跟踪参考信号的接收时刻的示意图三；
图7为本公开的非周期跟踪参考信号的接收时刻的示意图四；
图8为本公开的非周期跟踪参考信号的接收方法的流程示意图；
图9为本公开的终端的结构示意图；
图10为本公开的终端的结构示意图二；以及
图11为本公开的终端的结构示意图三。
具体实施方式
下面将结合本公开的一些实施例中的附图，对本公开的一些实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护 的范围。
本申请的说明书和权利要求书中的术语“包括”以及它的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，说明书以及权利要求中使用“和/或”表示所连接对象的至少其中之一，例如A和/或B，表示包含单独A，单独B，以及A和B都存在三种情况。
在本公开的一些实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本公开的一些实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更可选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
下面结合附图介绍本公开的实施例。本公开的一些实施例提供的非周期跟踪参考信号的接收方法及终端可以应用于无线通信系统中。该无线通信系统可以为采用5G系统，或者演进型长期演进(Evolved Long Term Evolution，eLTE)系统，或者后续演进通信系统。
参考图1，为本公开的一些实施例提供的一种无线通信系统的架构示意图。如图1所示，该无线通信系统可以包括：网络侧设备10和终端，例如终端记做UE11，UE11可以与网络侧设备10连接。在实际应用中上述各个设备之间的连接可以为无线连接，为了方便直观地表示各个设备之间的连接关系，图1中采用实线示意。
需要说明的是，上述通信系统可以包括多个UE，网络侧设备和可以与多个UE通信(传输信令或传输数据)。
本公开的一些实施例提供的网络侧设备10可以为基站，该基站可以为通常所用的基站，也可以为演进型基站(evolved node base station，eNB)，还可以为5G系统中的网络侧设备(例如下一代基站(next generation node base station，gNB)或发送和接收点(transmission and reception point，TRP))或者小区cell等设备。或者后续演进通信系统中的网络侧设备。然用词不够成限制。
本公开的一些实施例提供的终端可以为手机、平板电脑、笔记本电脑、 超级移动个人计算机(Ultra-Mobile Personal Computer，UMPC)、上网本或者个人数字助理(Personal Digital Assistant，PDA)等。所属领域技术人员可以理解，用词并不构成限制。
请参考图1，图1为本公开的非周期跟踪参考信号的接收方法的流程示意图，该接收方法应用于终端，包括：
步骤21：接收下行控制信息，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；
本公开的一些实施例中，可以由DCI Format 0-1中的CSI请求字段(CSI request field)触发所述辅小区中非周期跟踪参考信号。
本公开的一些实施例中，因为辅小区可能是自载波调度也可能是跨载波调度，如果辅小区配置为自调度的小区(cell)，那么辅小区的控制信息和数据信息都在该辅小区传输。如果辅小区配置为跨载波调度，那么辅小区的控制信息在其他小区(如主小区)传输，数据信息在该辅小区传输。因此，本公开的一些实施例中的所述下行控制信息，可在主小区接收，也可在辅小区接收。
步骤22：根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号；
本公开的一些实施例中，非周期跟踪参考信号在物理下行共享信道(PDSCH)中传输。
步骤23：判断是否满足非周期跟踪参考信号的生效条件，如果是，进入步骤24，否则，进入步骤25；所述生效条件至少包括：所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
本公开的一些实施例中，所述终端与所述辅小区完成射频调谐，是指所述终端与所述辅小区完成射频调谐的时刻。
步骤24：若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效；
步骤25：若不满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号不生效。
所谓非周期跟踪参考信号生效是指非周期跟踪参考信号可用，即可用于辅小区的时频跟踪。所谓非周期跟踪参考信号不生效是指非周期跟踪参考信 号不可用，不可用于辅小区的时频跟踪。
所谓射频调谐是指发射端将调制好的信号发射之后，接收端为了接收信号效果最好，使接收器与信号共振，这时接收的信号效果最好，其他杂波的干扰较小。
也就是说，终端不期望在与所述辅小区完成射频调谐之前，接收非周期跟踪参考信号，因为终端与所述辅小区完成射频调谐之前，终端接收的信号效果不理想，杂波的干扰较大，当终端与所述辅小区完成射频调谐之后，终端接收的信号效果好，接收的非周期跟踪参考信号可以作为可用的非周期跟踪参考信号，否则作为不可用的非周期跟踪参考信号。
目前，非周期跟踪参考信号已经在3GPP RAN1 92bis会议中达成一致。在频率范围2，支持非周期跟踪参考信号作为可选的终端功能。终端不期望被触发非周期跟踪参考信号，除非终端在相同BWP已经配置了相关联的具有相同冲激(burst)长度的周期TRS。其中冲激(burst)可称作突发。非周期跟踪参考信号与相关联的周期TRS具有相同的带宽，符号位置，子载波位置和burst长度。非周期跟踪参考信号与相关联的周期TRS的准共置(QCL)关系为：QCL type A+D。
本公开的一些实施例中，采用非周期跟踪参考信号对辅小区进行时频跟踪，非周期跟踪参考信号由下行控制信息触发，因此，UE可以及时接收非周期跟踪参考信号，对辅小区进行时频跟踪，不必像周期TRS一样等待下一个周期到来，解决了周期跟踪参考信号灵活性差的问题，同时，对可用的非周期跟踪参考信号的接收时刻进行了明确，从而可以根据可用的非周期跟踪参考信号，进行辅小区的时频跟踪，提高了通信准确性和效能。
请参考图3，图3为本公开的非周期跟踪参考信号的接收方法的另一流程示意图，该接收方法应用于终端，包括：
步骤31：接收配置信息，所述配置信息中至少包括：所述下行控制信息的接收时刻与所述非周期跟踪参考信号的接收时刻的时间偏移信息(A-TRS time offset)；
本公开的一些实施例中，网络侧设备可以通过RRC信令发送配置信息，所述配置信息中还可以包括：辅小区中非周期跟踪参考信号的比特数，和/或， 所述非周期跟踪参考信号的频域位置等信息。
步骤32：接收下行控制信息，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；
步骤33：根据所述下行控制信息的接收时刻和所述时间偏移信息，确定所述非周期跟踪参考信号的接收时刻；在确定的所述接收时刻，在所述辅小区接收所述非周期跟踪参考信号。
步骤34：判断是否满足非周期跟踪参考信号的生效条件，如果是，进入步骤35，否则，进入步骤36；所述生效条件至少包括：所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
步骤35：若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效；
步骤36：若不满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号不生效。
本公开的一些实施例中，根据接收到的配置信息中携带的下行控制信息的接收时刻与非周期跟踪参考信号的接收时刻的时间偏移信息，和下行控制信息的接收时刻，可以确定非周期跟踪参考信号的接收时刻，从而准确地进行非周期跟踪参考信号的接收。
上述实施例中，将非周期跟踪参考信号的接收时刻，作为判定接收到的非周期跟踪参考信号是否生效的一个条件，在本公开的其他一些实施例中，也可以将所述下行控制信息的接收时刻，作为判定接收的非周期跟踪参考信号是否生效的另一个条件。
即，所述生效条件还可以：所述下行控制信息的接收时刻在预设时刻之后。
在本公开的一些可选实施例中，所述预设时刻可以为以下时刻之一：
(1)MAC CE信令的接收时刻，所述MAC CE信令中包含用于激活所述辅小区的指示信息；
(2)确认信令的发送时刻，所述确认信令用于确认接收到所述MAC CE信令；
(3)所述MAC CE信令的生效时刻；
(4)所述终端与所述辅小区完成射频调谐的时刻。
当然，在本公开的其他一些实施例中，所述预设时刻还可以为其他时刻。
另外，在本公开的其他一些实施例中，也可以不将所述下行控制信息的接收时刻，作为判定接收的非周期跟踪参考信号是否生效的一个条件，即可用的非周期跟踪参考信号对应的下行控制信息，可以在任意时刻接收。然而，该种情况下，终端并不根据接收到的下行控制信息进行关于辅小区的操作，例如辅小区的切换操作或辅小区的射频调整(RF retuning)等操作。
下面结合具体实施例，对本公开的非周期跟踪参考信号的接收方法进行详细说明。
示例一
请参考图4，本公开的示例一的非周期跟踪参考信号的接收方法包括：
步骤41：终端在主小区接收MAC CE信令(activation Command)，所述MAC CE信令中包含用于激活辅小区的指示信息；
在主小区对应的网络侧设备上，网络侧设备在MAC层生成MAC CE信令，MAC CE信令中包含用于激活辅小区的指示信息，MAC层将所述MAC CE信令打包发往物理层，由物理层在PDSCH中传输。
当终端接收到网络侧设备发送的物理层信息之后，经过信道估计、均衡或译码等过程，正确接收物理层信息。
步骤42：终端接收下行控制信息(DCI)，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息，其中，所述下行控制信息的接收时刻(DCI trigger timing)在MAC CE信令的接收时刻之后。
例如：主小区对应的网络侧设备，根据所述下行控制信息的发送时刻，向终端发送所述下行控制信息。终端盲检所述下行控制信息并接收。
本公开的一些实施例中，终端不期望在MAC CE信令的接收时刻之前，接收下行控制信息。若终端在MAC CE信令的接收时刻之前，接收到所述下行控制信息，则判定接收到的非周期跟踪参考信号不生效。若终端在MAC CE信令的接收时刻之后，接收到所述下行控制信息，则判定接收到的非周期跟踪参考信号生效。
步骤43：终端发送确认(ACK)信令，所述确认信令用于确认接收到所 述MAC CE信令；
终端在正确接收网络侧设备发送的物理层信息之后，向网络侧设备发送ACK信令。
步骤44：终端在所述MAC CE信令生效(MAC CE message is applied)后，开始激活辅小区。
协议中规定，从终端发送ACK信令到MAC CE信令生效的时间为3ms。MAC CE信令生效后，开始激活辅小区，即终端开始与辅小区进行射频调谐。
步骤45：终端与辅小区完成射频调谐。
步骤46：终端根据接收到的下行控制信息，以及下行控制信息的接收时刻与非周期跟踪参考信号的接收时刻的时间偏移，在辅小区接收非周期跟踪参考信号。
步骤47：终端判断是否满足非周期跟踪参考信号的生效条件，如果是，进入步骤48，否则，进入步骤49；所述生效条件包括：所述下行控制信息的接收时刻(DCI trigger timing)在MAC CE信令的接收时刻之后，和，所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
步骤48：若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效；
步骤49：若不满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号不生效。
示例二
请参考图5，本公开的示例二的非周期跟踪参考信号的接收方法包括：
步骤51：终端在主小区接收MAC CE信令(activation Command)，所述MAC CE信令中包含用于激活辅小区的指示信息；
在主小区对应的网络侧设备上，网络侧设备在MAC层生成MAC CE信令，MAC CE信令中包含用于激活辅小区的指示信息，MAC层将所述MAC CE信令打包发往物理层，由物理层在PDSCH中传输。
当终端接收网络侧设备发送的物理层信息之后，经过信道估计、均衡或译码等过程，正确接收物理层信息。
步骤52：终端发送确认(ACK)信令，所述确认信令用于确认接收到所述MAC CE信令；
终端在正确接收网络侧设备发送的物理层信息之后，向网络侧设备发送ACK信令。
步骤53：终端接收下行控制信息(DCI)，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息，其中，所述下行控制信息的接收时刻(DCI trigger timing)在确认信令的发送时刻之后。
例如：在主小区对应的网络侧设备，根据所述下行控制信息的发送时刻，向终端发送所述下行控制信息。终端盲检所述下行控制信息并接收。
本公开的一些实施例中，终端不期望在确认信令的发送时刻之前，接收下行控制信息。若终端在确认信令的发送时刻之前，接收到所述下行控制信息，则判定接收到的非周期跟踪参考信号不生效。若终端在确认信令的发送时刻之后，接收到所述下行控制信息，则判定接收到的非周期跟踪参考信号生效。
步骤54：终端在所述MAC CE信令生效(MAC CE message is applied)后，开始激活辅小区。
协议中规定，从终端发送ACK信令到MAC CE信令生效的时间为3ms。MAC CE信令生效后，开始激活辅小区，即终端开始与辅小区进行射频调谐。
步骤55：终端与辅小区完成射频调谐。
步骤56：终端根据接收到的下行控制信息，以及下行控制信息的接收时刻与非周期跟踪参考信号的接收时刻的时间偏移，在辅小区接收非周期跟踪参考信号。
步骤57：终端判断是否满足非周期跟踪参考信号的生效条件，如果是，进入步骤58，否则，进入步骤59；所述生效条件包括：所述下行控制信息的接收时刻(DCI trigger timing)在发送所述确认指令的时刻之后，和，所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
步骤58：若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效；
步骤59：若不满足非周期跟踪参考信号的生效条件，判定所述非周期跟 踪参考信号不生效。
示例三
请参考图6，本公开的示例三的非周期跟踪参考信号的接收方法包括：
步骤61：终端在主小区接收MAC CE信令(activation Command)，所述MAC CE信令中包含用于激活辅小区的指示信息；
在主小区对应的网络侧设备上，网络侧设备在MAC层生成MAC CE信令，MAC CE信令中包含用于激活辅小区的指示信息，MAC层将所述MAC CE信令打包发往物理层，由物理层在PDSCH中传输。
当终端接收网络侧设备发送的物理层信息之后，经过信道估计、均衡或译码等过程，正确接收物理层信息。
步骤62：终端发送确认(ACK)信令，所述确认信令用于确认接收到所述MAC CE信令；
终端在正确接收网络侧设备发送的物理层信息之后，向网络侧设备发送ACK信令。
步骤63：终端在所述MAC CE信令生效(MAC CE message is applied)后，开始激活辅小区。
协议中规定，从终端发送ACK信令到MAC CE信令生效的时间为3ms。MAC CE信令生效后，开始激活辅小区，即终端开始与辅小区进行射频调谐。
步骤64：终端接收下行控制信息(DCI)，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息，其中，所述下行控制信息的接收时刻(DCI trigger timing)在确认信令的发送时刻之后。
例如：在主小区对应的网络侧设备，根据所述下行控制信息的发送时刻，向终端发送所述下行控制信息。终端盲检所述下行控制信息并接收。
本公开的一些实施例中，终端不期望在所述MAC CE信令生效的时刻之前，接收到下行控制信息。若终端在所述MAC CE信令生效的时刻之前，接收到所述下行控制信息，则判定接收的非周期跟踪参考信号不生效。若终端在所述MAC CE信令生效的时刻之后，接收到所述下行控制信息，则判定接收的非周期跟踪参考信号生效。
步骤65：终端与辅小区完成射频调谐。
步骤66：终端根据接收到的下行控制信息，以及下行控制信息的接收时刻与非周期跟踪参考信号的接收时刻的时间偏移，在辅小区接收非周期跟踪参考信号。
步骤67：终端判断是否满足非周期跟踪参考信号的生效条件，如果是，进入步骤68，否则，进入步骤69；所述生效条件包括：所述下行控制信息的接收时刻(DCI trigger timing)在所述MAC CE信令生效的时刻之后，和，所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
步骤68：若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效；
步骤69：若不满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号不生效。
示例四
请参考图7，本公开的示例四的非周期跟踪参考信号的接收方法包括：
步骤71：终端在主小区接收MAC CE信令(activation Command)，所述MAC CE信令中包含用于激活辅小区的指示信息；
在主小区对应的网络侧设备上，网络侧设备在MAC层生成MAC CE信令，MAC CE信令中包含用于激活辅小区的指示信息，MAC层将所述MAC CE信令打包发往物理层，由物理层在PDSCH中传输。
当终端接收到网络侧设备发送的物理层信息之后，经过信道估计、均衡或译码等过程，正确接收物理层信息。
步骤72：终端发送确认(ACK)信令，所述确认信令用于确认接收到所述MAC CE信令；
终端在正确接收网络侧设备发送的物理层信息之后，向网络侧设备发送ACK信令。
步骤73：终端在所述MAC CE信令生效(MAC CE message is applied)后，开始激活辅小区。
协议中规定，从终端发送ACK信令到MAC CE信令生效的时间为3ms。MAC CE信令生效后，开始激活辅小区，即终端开始与辅小区进行射频调谐。
步骤74：终端与辅小区完成射频调谐。
步骤75：终端接收下行控制信息(DCI)，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息，其中，所述下行控制信息的接收时刻(DCI trigger timing)在确认信令的发送时刻之后。
例如：在主小区对应的网络侧设备，根据所述下行控制信息的发送时刻，向终端发送所述下行控制信息。终端盲检所述下行控制信息并接收。
本公开的一些实施例中，终端不期望在终端与辅小区完成射频调谐的时刻之前，接收到下行控制信息。若终端在终端与辅小区完成射频调谐的时刻之前，接收到所述下行控制信息，则判定接收到的非周期跟踪参考信号不生效。若终端在终端与辅小区完成射频调谐的时刻之后，接收到所述下行控制信息，则判定接收到的非周期跟踪参考信号生效。
步骤76：终端根据接收到的下行控制信息，以及下行控制信息的接收时刻与非周期跟踪参考信号的接收时刻的时间偏移，在辅小区接收非周期跟踪参考信号。
步骤77：终端判断是否满足非周期跟踪参考信号的生效条件，如果是，进入步骤78，否则，进入步骤79；所述生效条件包括：所述下行控制信息的接收时刻(DCI trigger timing)在终端与辅小区完成射频调谐的时刻之后，和，所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
步骤78：若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效；
步骤79：若不满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号不生效。
示例五
请参考图8，本公开的示例五的非周期跟踪参考信号的接收方法包括：
步骤81：接收下行控制信息，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；
步骤82：根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号；
步骤83：判断所述非周期跟踪参考信号的接收时刻，是否在所述终端与所述辅小区完成射频调谐之后，如果是，判定满足非周期跟踪参考信号的生效条件，进入步骤84，否则，判定不满足非周期跟踪参考信号的生效条件，进入步骤85；
步骤84：若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效；
步骤85：若不满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号不生效。
本公开的一些实施例中，非周期跟踪参考信号的生效条件，与下行控制信息的接收时刻没有关系，只与所述非周期跟踪参考信号的接收时刻有关，即如果终端在与所述辅小区完成射频调谐之前，接收到所述非周期跟踪参考信号，则判定接收到的所述非周期跟踪参考信号不生效，如果终端在与所述辅小区完成射频调谐之后，接收到所述非周期跟踪参考信号，则判定接收到的所述非周期跟踪参考信号生效。
另外，本公开的一些实施例中，虽然对下行控制信息的接收时刻并不限定，但是，终端在接收到该下行控制信息之后，不根据该下行控制信息进行关于辅小区的操作，如辅小区切换或辅小区的射频调整等。
基于同一发明构思，请参考图9，本公开的一些实施例还提供一种终端90，包括：
第一接收模块91，用于接收下行控制信息，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；
第二接收模块92，用于根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号；
处理模块93，用于若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效，所述生效条件至少包括：所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
可选地，所述生效条件还包括：所述下行控制信息的接收时刻在预设时刻之后。
可选地，所述预设时刻为以下时刻之一：
MAC CE信令的接收时刻，所述MAC CE信令中包含用于激活所述辅小区的指示；
确认信令的发送时刻，所述确认信令用于确认接收到所述MAC CE信令；
所述MAC CE信令的生效时刻；
所述终端与所述辅小区完成射频调谐的时刻。
可选地，所述终端还包括：
第三接收模块，用于接收配置信息，所述配置信息中至少包括：所述下行控制信息的接收时刻与所述非周期跟踪参考信号的接收时刻的时间偏移信息；
其中，所述第二接收模块，还用于根据所述下行控制信息的接收时刻和所述时间偏移信息，确定所述非周期跟踪参考信号的接收时刻；在确定的所述接收时刻，在所述辅小区接收所述非周期跟踪参考信号。
本公开的一些实施例提供的终端能够实现图1至图7的方法实施例中终端实现的各个过程，为避免重复，这里不再赘述。
请参考图10，图10为本公开另一实施例的终端的结构示意图，该终端100包括但不限于：射频单元101、网络模块102、音频输出单元103、输入单元104、传感器105、显示单元106、用户输入单元107、接口单元108、存储器109、处理器1010、以及电源1011等部件。本领域技术人员可以理解，图10中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。在本公开的一些实施例中，终端包括但不限于手机、平板电脑、笔记本电脑、掌上电脑、车载终端、可穿戴设备、以及计步器等。
其中，射频单元101，用于接收下行控制信息，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号；
处理器1010，用于若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效，所述生效条件至少包括：所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
本公开的一些实施例中，采用非周期跟踪参考信号对辅小区进行时频跟 踪，非周期跟踪参考信号能够根据需要触发，解决了周期跟踪参考信号灵活性差的问题，同时，对可用的非周期跟踪参考信号的接收时刻进行了明确，从而可以根据可用的非周期跟踪参考信号，进行辅小区的时频跟踪，提高了通信准确性和效能。应理解的是，本公开的一些实施例中，射频单元101可用于收发信息或通话过程中，信号的接收和发送，具体的，将来自基站的下行数据接收后，给处理器1010处理；另外，将上行的数据发送给基站。通常，射频单元101包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外，射频单元101还可以通过无线通信系统与网络和其他设备通信。
终端通过网络模块102为用户提供了无线的宽带互联网访问，如帮助用户收发电子邮件、浏览网页和访问流式媒体等。
音频输出单元103可以将射频单元101或网络模块102接收的或者在存储器109中存储的音频数据转换成音频信号并且输出为声音。而且，音频输出单元103还可以提供与终端100执行的特定功能相关的音频输出(例如，呼叫信号接收声音、消息接收声音等等)。音频输出单元103包括扬声器、蜂鸣器以及受话器等。
输入单元104用于接收音频或视频信号。输入单元104可以包括图形处理器(Graphics Processing Unit，GPU)1041和麦克风1042，图形处理器1041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。处理后的图像帧可以显示在显示单元106上。经图形处理器1041处理后的图像帧可以存储在存储器109(或其它存储介质)中或者经由射频单元101或网络模块102进行发送。麦克风1042可以接收声音，并且能够将这样的声音处理为音频数据。处理后的音频数据可以在电话通话模式的情况下转换为可经由射频单元101发送到移动通信基站的格式输出。
终端100还包括至少一种传感器105，比如光传感器、运动传感器以及其他传感器。具体地，光传感器包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板1061的亮度，接近传感器可在终端100移动到耳边时，关闭显示面板1061和/或背光。作为运动传感 器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别终端姿态(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；传感器105还可以包括指纹传感器、压力传感器、虹膜传感器、分子传感器、陀螺仪、气压计、湿度计、温度计、红外线传感器等，在此不再赘述。
显示单元106用于显示由用户输入的信息或提供给用户的信息。显示单元106可包括显示面板1061，可以采用液晶显示器(Liquid Crystal Display，LCD)、有机发光二极管(Organic Light-Emitting Diode，OLED)等形式来配置显示面板1061。
用户输入单元107可用于接收输入的数字或字符信息，以及产生与终端的用户设置以及功能控制有关的键信号输入。具体地，用户输入单元107包括触控面板1071以及其他输入设备1072。触控面板1071，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板1071上或在触控面板1071附近的操作)。触控面板1071可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器1010，接收处理器1010发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板1071。除了触控面板1071，用户输入单元107还可以包括其他输入设备1072。具体地，其他输入设备1072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
进一步的，触控面板1071可覆盖在显示面板1061上，当触控面板1071检测到在其上或附近的触摸操作后，传送给处理器1010以确定触摸事件的类型，随后处理器1010根据触摸事件的类型在显示面板1061上提供相应的视觉输出。虽然在图10中，触控面板1071与显示面板1061是作为两个独立的部件来实现终端的输入和输出功能，但是在某些实施例中，可以将触控面板1071与显示面板1061集成而实现终端的输入和输出功能，具体此处不做限定。
接口单元108为外部装置与终端100连接的接口。例如，外部装置可以包括有线或无线头戴式耳机端口、外部电源(或电池充电器)端口、有线或无线数据端口、存储卡端口、用于连接具有识别模块的装置的端口、音频输入/输出(I/O)端口、视频I/O端口、耳机端口等等。接口单元108可以用于接收来自外部装置的输入(例如，数据信息、电力等等)并且将接收的输入传输到终端100内的一个或多个元件或者可以用于在终端100和外部装置之间传输数据。
存储器109可用于存储软件程序以及各种数据。存储器109可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据手机的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器109可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
处理器1010是终端的控制中心，利用各种接口和线路连接整个终端的各个部分，通过运行或执行存储在存储器109内的软件程序和/或模块，以及调用存储在存储器109内的数据，执行终端的各种功能和处理数据，从而对终端进行整体监控。处理器1010可包括一个或多个处理单元；可选的，处理器1010可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器1010中。
终端100还可以包括给各个部件供电的电源1011(比如电池)，可选的，电源1011可以通过电源管理系统与处理器1010逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
另外，终端100包括一些未示出的功能模块，在此不再赘述。
请参考图11，图11为本公开又一实施例的终端的结构示意图，该终端110包括：处理器111和存储器112。在本公开的一些实施例中，终端110还包括：存储在存储器上112并可在处理器111上运行的计算机程序，计算机程序被处理器111执行时实现如下步骤：
接收下行控制信息，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；
根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号；
若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效，所述生效条件至少包括：所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
处理器111负责管理总线架构和通常的处理，存储器112可以存储处理器111在执行操作时所使用的数据。
可选的，所述生效条件还包括：所述下行控制信息的接收时刻在预设时刻之后。
可选的，所述预设时刻为以下时刻之一：
介质访问控制层控制单元MAC CE信令的接收时刻，所述MAC CE信令中包含用于激活所述辅小区的指示；
确认信令的发送时刻，所述确认信令用于确认接收到所述MAC CE信令；
所述MAC CE信令的生效时刻；
所述终端与所述辅小区完成射频调谐的时刻。
可选的，计算机程序被处理器111执行时还可实现如下步骤：所述接收下行控制信息的步骤之前还包括：
接收配置信息，所述配置信息中至少包括：所述下行控制信息的接收时刻与所述非周期跟踪参考信号的接收时刻的时间偏移信息；
所述根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号的步骤包括：
根据所述下行控制信息的接收时刻和所述时间偏移信息，确定所述非周期跟踪参考信号的接收时刻；
在确定的所述接收时刻，在所述辅小区接收所述非周期跟踪参考信号。
本公开的一些实施例还提供一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现上述非周期跟踪参考信号的接收方法的方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质可以是易失性的计算机可读存储介质或非易失性的计算机可读存储介质，如只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access  Memory，简称RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护范围之内。

Claims (12)

  1. 一种非周期跟踪参考信号的接收方法，应用于终端，所述方法包括：
    接收下行控制信息，所述下行控制信息中包含用于触发辅小区中非周期跟踪参考信号的信息；
    根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号；
    若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效，所述生效条件至少包括：所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
  2. 根据权利要求1所述的非周期跟踪参考信号的接收方法，其中，所述生效条件还包括：所述下行控制信息的接收时刻在预设时刻之后。
  3. 根据权利要求2所述的非周期跟踪参考信号的接收方法，其中，所述预设时刻为以下时刻之一：
    媒体接入控制层控制单元MAC CE信令的接收时刻，所述MAC CE信令中包含用于激活所述辅小区的指示；
    确认信令的发送时刻，所述确认信令用于确认接收到所述MAC CE信令；
    所述MAC CE信令的生效时刻；
    所述终端与所述辅小区完成射频调谐的时刻。
  4. 根据权利要求1所述的非周期跟踪参考信号的接收方法，其中，所述接收下行控制信息的步骤之前，所述方法还包括：
    接收配置信息，所述配置信息中至少包括：所述下行控制信息的接收时刻与所述非周期跟踪参考信号的接收时刻的时间偏移信息。
  5. 根据权利要求4所述的非周期跟踪参考信号的接收方法，其中，所述根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号的步骤包括：
    根据所述下行控制信息的接收时刻和所述时间偏移信息，确定所述非周期跟踪参考信号的接收时刻；
    在确定的所述接收时刻，在所述辅小区接收所述非周期跟踪参考信号。
  6. 一种终端，包括：
    第一接收模块，用于接收下行控制信息，所述下行控制信息中包含用于 触发辅小区中非周期跟踪参考信号的信息；
    第二接收模块，用于根据所述下行控制信息，在所述辅小区接收非周期跟踪参考信号；
    处理模块，用于若满足非周期跟踪参考信号的生效条件，判定所述非周期跟踪参考信号生效，所述生效条件至少包括：所述非周期跟踪参考信号的接收时刻，在所述终端与所述辅小区完成射频调谐之后。
  7. 根据权利要求6所述的终端，其中，所述生效条件还包括：所述下行控制信息的接收时刻在预设时刻之后。
  8. 根据权利要求7所述的终端，其中，所述预设时刻为以下时刻之一：
    MAC CE信令的接收时刻，所述MAC CE信令中包含用于激活所述辅小区的指示；
    确认信令的发送时刻，所述确认信令用于确认接收到所述MAC CE信令；
    所述MAC CE信令的生效时刻；
    所述终端与所述辅小区完成射频调谐的时刻。
  9. 根据权利要求6所述的终端，还包括：
    第三接收模块，用于接收配置信息，所述配置信息中至少包括：所述下行控制信息的接收时刻与所述非周期跟踪参考信号的接收时刻的时间偏移信息。
  10. 根据权利要求9所述的终端，其中，所述第二接收模块，还用于根据所述下行控制信息的接收时刻和所述时间偏移信息，确定所述非周期跟踪参考信号的接收时刻；在确定的所述接收时刻，在所述辅小区接收所述非周期跟踪参考信号。
  11. 一种终端，包括：
    处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时所述处理器实现如权利要求1至5中任一项所述的非周期跟踪参考信号的接收方法的步骤。
  12. 一种计算机可读存储介质，其中，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时所述处理器实现如权利要求1至5中任一项所述的非周期跟踪参考信号的接收方法的步骤。
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