WO2016119466A1 - 发现信号的处理方法及装置 - Google Patents

发现信号的处理方法及装置 Download PDF

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Publication number
WO2016119466A1
WO2016119466A1 PCT/CN2015/089193 CN2015089193W WO2016119466A1 WO 2016119466 A1 WO2016119466 A1 WO 2016119466A1 CN 2015089193 W CN2015089193 W CN 2015089193W WO 2016119466 A1 WO2016119466 A1 WO 2016119466A1
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ucds
transmission
period
subframe
signal
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PCT/CN2015/089193
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English (en)
French (fr)
Inventor
徐汉青
赵亚军
莫林梅
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中兴通讯股份有限公司
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Priority claimed from CN201510170359.8A external-priority patent/CN106162922B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US15/546,855 priority Critical patent/US10555243B2/en
Priority to EP15879664.9A priority patent/EP3253165A4/en
Publication of WO2016119466A1 publication Critical patent/WO2016119466A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for processing a discovery signal.
  • LTE-U Long Term Evolution – Unlicensed
  • WiFi Wireless Fidelity
  • LTE-U Long Term Evolution – Unlicensed
  • the LTE-U system may also be referred to as an LTE Licensed Assisted Access (LAA) system.
  • LAA LTE Licensed Assisted Access
  • the LBT/CCA will restrict the LAA reference signal from being sent before occupying the unlicensed carrier.
  • ETSI European Telecommunications Standards Institute
  • SCS Short Control Signalling
  • management and control frames eg ACK/NACK signals
  • SCS transmission has strict limits: if SCS is used, the short signaling transmission duty of the adaptive device does not exceed 5%, which is 2.5 ms, during the observation period of 50 ms.
  • the use of unlicensed carriers also needs to solve the problems of cell discovery, synchronization, and radio resource management (Radio Resource Management, RRM for short).
  • the discovery signal (Discovery Signal, DS for short) defined by 3GPP Rel-12 can be used as a research reference. .
  • the DS composition defined by Rel-12 is: Primary/Secondary Synchronization Signal (PSS/SSS) and Cell-specific Reference Signal (Cell-specific Reference Signal, referred to as CRS), Channel State Information-Reference Signal (CSI-RS) can be configured.
  • PSS/SSS Primary/Secondary Synchronization Signal
  • CRS Cell-specific Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • the DS duration in each cycle in Frequency Division Duplex (FDD) mode can be 1 to 5 consecutive subframes.
  • the DS duration can be 2 to 5 consecutive subframes in Time Division Duplex (TDD) mode.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the CRS is transmitted through the antenna port 0 on all the downlink subframes and the downlink subframe part of the special subframe (DwPTS).
  • the PSS is transmitted on the first subframe of each cycle of the FDD or the second subframe of each cycle of the TDD.
  • the SSS is sent on the first subframe of each cycle.
  • the non-zero-power CSI-RS is transmitted on zero or more subframes per cycle.
  • the existing DS duration is at least 1 subframe.
  • the CRS occupies the symbol 0, the symbol 4, the symbol 7 and the symbol 11, the SSS occupies the symbol 5, the PSS occupies the symbol 6, and the CSI-RS can Match. If CSI-RS is not configured, the DS spans at least 12 symbols and actually occupies at least 6 symbols.
  • the existing DS duration is at least 2 subframes, and in these 2 subframes, the CRS occupies symbol 0, symbol 4, symbol 7, and symbol 11 in the first subframe and the second subframe.
  • the SSS occupies the symbol 13 of the first subframe.
  • the PSS occupies the symbol 2 of the second subframe.
  • the CSI-RS can be configured. If the CSI-RS is not configured, the DS spans at least 26 symbols, and it actually occupies at least 10 symbols.
  • the use of unlicensed carriers has its particularity. There is a limitation of the LBT/CCA mechanism and the maximum occupied duration before use.
  • the DS internal multi-symbol discontinuous transmission involves multiple occupations (if sent by symbol) or occupied for too long (once).
  • the problem of reserving the entire DS duration and the need to send an occupied or reserved signal requires redesigning the pattern of the discovered signal to reduce the number of occupations or the duration of the occupation.
  • SCS For SCS transmission mode without LBT/CCA in Europe, SCS has strict time requirements, that is, within 50 ms observation period, the short signaling transmission duty of adaptive devices does not exceed 5%, which is 2.5 ms. This also requires reducing the length of DS occupancy, and the discontinuous transmission of multiple symbols within the DS also causes multiple interferences to users who are competing for resources or occupied resources. Therefore, it is also necessary to redesign the pattern of the discovery signal to reduce the occupation time and avoid causing multiple interferences to other devices, and at the same time let a part of the SCS resources be used for other necessary short signaling.
  • the discovery signal in the unlicensed carrier in the related art needs to be redesigned, and the resource occupancy of the discovery signal is minimized and multiple interference is avoided under the premise of satisfying and matching the special requirements of the unlicensed carrier. The problem arises.
  • the embodiments of the present invention provide a method and a device for processing a discovery signal, so as to solve at least the problem that the discovery signal in the related art is applied to an unlicensed carrier, and the problem of redesigning the discovery signal is required.
  • a method of processing a discovery signal is provided.
  • the processing method for the discovery signal includes: performing at least one of the following operations on each component signal of the discovery signal: determining a configuration manner of each component signal; performing pattern modification on each component signal; determining each component signal or modifying through the pattern The subsequent transmission method of each component signal.
  • performing pattern modification on each component signal comprises: selecting and retaining symbols of adjacent or similar time domains in each component signal according to existing time-frequency resource locations of each component signal to form a discovery signal (UCDS) in the unlicensed carrier.
  • the transmission is performed; or, the time-frequency resource positions of the constituent signals are modified so that the constituent signals are adjacent or close to each other in the time domain, and the modified symbols are used to form the UCDS for transmission.
  • UCDS discovery signal
  • modifying the time-frequency resource location of each component signal comprises: modifying a time domain location of each component signal.
  • the UCDS comprises at least one of: a primary synchronization signal (PSS); a secondary synchronization signal (SSS); a cell-specific reference signal (CRS); a channel state information-reference signal (CSI-RS); a position reference signal (PRS)
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • CRS cell-specific reference signal
  • CSI-RS channel state information-reference signal
  • PRS position reference signal
  • PSS, SSS, CRS, and PRS are used for cell discovery and/or synchronization
  • CRS and CSI-RS are used for radio resource management (RRM) measurements and/or CSI measurements.
  • RRM radio resource management
  • the UCDS comprises a modified form of a single signal or a modified form of at least two signals in the PSS, SSS, CRS, PRS, CRS and CSI-RS.
  • the sending manner includes one of the following: periodic sending; aperiodic triggering sending; and periodic sending and hybrid sending in combination with aperiodic triggering.
  • the transmitting manner further includes: switching between a conventional discovery signal transmission mode of each component signal and a UCDS transmission mode of each component signal after the pattern modification.
  • the periodic transmission includes one of: transmitting UCDS at each periodic point by short control signaling (SCS); transmitting UCDS normally at the current periodic point in the case of competing to an unlicensed carrier; In the case of an unlicensed carrier, the UCDS is stopped once at the current cycle point, and waits for the next cycle point. If the unlicensed carrier has not been contending at the next cycle point, the UCDS continues to be sent once; In the case of a carrier, the UCDS is normally transmitted at the current periodic point; if the unlicensed carrier is not contending, the UCDS is stopped once at the current periodic point, and the UCDS is supplementally transmitted after the next time the non-authorized carrier is contending. , supplemental transmission UCDS is sent for irregular periods.
  • SCS short control signaling
  • the periodic transmission includes one of the following: the UCDS is sent according to the preset transmission parameter set by the LBT or the idle channel evaluation C-A, wherein the preset transmission parameter set includes at least one of the following: period, offset, and duration. Time, number of bursts; in the case of competing to an unlicensed carrier, transmitting UCDS at the current point in time; in the case of not competing to an unlicensed carrier, stopping sending UCDS once at the current period, and at the next point in time In the previous time period, if the content is re-competed to the unlicensed carrier, the UCDS continues to be sent, wherein the UCDS continues to be sent in an irregular periodic transmission, and the next time point is after the current time point, and the current time point and the next time point are both
  • the preset transmission parameter set includes at least one of the following: a period, an offset, a duration, and a number of bursts.
  • the sending policy of the UCDS includes one of the following: shortening the sending period of the UCDS; and using the sending window to increase the sending opportunity of the UCDS, wherein the design of the sending window includes one of the following: the sending window is located before the preset time point, and the sending window After the preset time point, the sending window includes a preset time point, where the preset time point is determined by the preset sending parameter set, and the preset sending parameter set includes at least one of the following: a period, an offset, a duration, and a number of bursts; The first period and the second period are used to transmit the UCDS, wherein the first period is greater than the second period, and the second period is used to supplement the sending of the UCDS in the second period if the first period fails to successfully send the UCDS.
  • the transmission window is determined by the base station and sent by the base station to the terminal; or, in the case of using the first period and the second period to cooperate with the transmission of the UCDS, the first period and The second period is determined by the base station and transmitted by the base station to the terminal.
  • the aperiodic triggering transmission uses the authorized carrier or the unlicensed carrier to notify the user equipment (UE) whether the secondary cell (SCell) corresponding to the UE sends the configuration information of the UCDS and/or the UCDS.
  • UE user equipment
  • SCell secondary cell
  • the trigger signal for triggering the SCell to transmit the UCDS is sent by using a wired or wireless manner between the cells.
  • the configuration information of whether the SCell sends the UCDS and/or sends the UCDS is notified to the UE by radio resource control (RRC) signaling, medium access control (MAC) signaling or physical layer signaling.
  • RRC radio resource control
  • MAC medium access control
  • the SCell triggers the UCDS trigger signal and/or informs the UE of the time-frequency resource location of whether the SCell sends the UCDS signaling in a pre-configured or dynamically selected manner.
  • the configuration manner includes one of the following: an independent configuration manner and a combined configuration manner.
  • each component signal adopts an independent configuration manner
  • each component signal independently configures a period, an offset, a duration, a subframe position, and a time-frequency pattern.
  • each component signal is configured with a uniform period, offset, duration, wherein each component signal has a different subframe position and/or time-frequency configuration.
  • the UCDS subframe is a periodic subframe and/or a non-periodic subframe, wherein the UCDS subframe is a subframe in which the UCDS is transmitted or a subframe in which the UE assumes that the UCDS exists.
  • the UCDS meets the LAA single RRM measurement performance.
  • the condition that the UCDS satisfies the LAA single RRM measurement performance includes one of: transmitting at least two UCDS occasions or UCDS bursts in one UCDS transmission period, wherein at least two UCDS occasions or UCDS bursts are continuously transmitted in the time domain. Or discontinuous transmission; the measurement signal/symbol is transmitted on the discontinuous symbol in the UCDS composed of the modified symbols.
  • a processing apparatus for discovering a signal is provided.
  • a processing device for discovering a signal includes: a processing module configured to perform at least one of: performing a configuration on each component signal of the discovery signal: determining a configuration manner of each constituent signal; performing pattern modification on each constituent signal; determining each component The transmission method of the signal or each component signal modified by the pattern.
  • the processing module is configured to select and retain symbols in the time-domains adjacent to or adjacent to each other in the constituent signals according to the existing time-frequency resource positions of the constituent signals of the discovery signal to form a UCDS for transmission; or, for each component signal
  • the frequency resource location is modified so that the constituent signals are adjacent or close to each other in the time domain, and the modified symbols are used to form the UCDS for transmission.
  • the processing module is arranged to modify the time domain position of each of the constituent signals.
  • the UCDS comprises at least one of: PSS; SSS; CRS; CSI-RS; PRS; wherein PSS, SSS, CRS and PRS are used for cell discovery and/or synchronization, CRS and CSI-RS are used for RRM measurement and / or CSI measurement.
  • the UCDS comprises a modified form of a single signal or a modified form of at least two signals in the PSS, SSS, CRS, PRS, CRS and CSI-RS.
  • the sending manner includes one of the following: periodic sending; aperiodic triggering sending; and periodic sending and hybrid sending in combination with aperiodic triggering.
  • the transmitting manner further includes: switching between a conventional discovery signal transmission mode of each component signal and a UCDS transmission mode of each component signal after the pattern modification.
  • the periodic transmission includes one of: transmitting the UCDS at each periodic point through the SCS; transmitting the UCDS normally at the current periodic point in the case of competing to the unlicensed carrier; and not competing for the unlicensed carrier in the case of not competing for the unlicensed carrier
  • the periodic point stops transmitting UCDS once, and after the next time it contends to the unlicensed carrier, the supplementary UCDS is sent, wherein the supplementary sending UCDS is sent in an irregular period.
  • the periodic transmission includes one of the following: the UCDS is sent according to the preset transmission parameter set by the LBT or the idle channel evaluation C-A, wherein the preset transmission parameter set includes at least one of the following: period, offset, and duration. Time, number of bursts; in the case of competing to an unlicensed carrier, transmitting UCDS at the current point in time; in the case of not competing to an unlicensed carrier, stopping sending UCDS once at the current period, and at the next point in time In the previous time period, if the content is re-competed to the unlicensed carrier, the UCDS continues to be sent, wherein the UCDS continues to be sent in an irregular periodic transmission, and the next time point is after the current time point, and the current time point and the next time point are both
  • the preset transmission parameter set includes at least one of the following: a period, an offset, a duration, and a number of bursts.
  • the sending policy of the UCDS includes one of the following: shortening the sending period of the UCDS; and using the sending window to increase the sending opportunity of the UCDS, wherein the design of the sending window includes one of the following: the sending window is located before the preset time point, and the sending window After the preset time point, the sending window includes a preset time point, where the preset time point is determined by the preset sending parameter set, and the preset sending parameter set includes at least one of the following: a period, an offset, a duration, and a number of bursts; The first period and the second period are used to transmit the UCDS, wherein the first period is greater than the second period, and the second period is used to supplement the sending of the UCDS in the second period if the first period fails to successfully send the UCDS.
  • the transmission window is determined by the base station and sent by the base station to the terminal; or, in the case of using the first period and the second period to cooperate with the transmission of the UCDS, the first period and The second period is determined by the base station and transmitted by the base station to the terminal.
  • the aperiodic triggering transmission uses the authorized carrier or the unlicensed carrier to notify the user equipment UE whether the SCell corresponding to the UE sends the UCDS and/or sends the configuration information of the UCDS.
  • the trigger signal for triggering the SCell to transmit the UCDS is sent by using a wired or wireless manner between the cells.
  • the configuration information of whether the SCell sends the UCDS and/or sends the UCDS is notified to the UE by using RRC signaling, MAC signaling, or physical layer signaling.
  • the SCell triggers the UCDS trigger signal and/or informs the UE of the time-frequency resource location of whether the SCell sends the UCDS signaling in a pre-configured or dynamically selected manner.
  • the configuration manner includes one of the following: an independent configuration manner and a combined configuration manner.
  • each component signal adopts an independent configuration manner
  • each component signal is independently configured with a period, Offset, duration, sub-frame position, time-frequency pattern.
  • each component signal is configured with a uniform period, offset, duration, time-frequency pattern, wherein each component signal has a different subframe position and/or time-frequency configuration.
  • the UCDS subframe is a periodic subframe and/or a non-periodic subframe, wherein the UCDS subframe is a subframe in which the UCDS is transmitted or a subframe in which the UE assumes that the UCDS exists.
  • the UCDS meets the LAA single RRM measurement performance.
  • the condition that the UCDS satisfies the LAA single RRM measurement performance includes one of: transmitting at least two UCDS occasions or UCDS bursts in one UCDS transmission period, wherein at least two UCDS occasions or UCDS bursts are continuously transmitted in the time domain. Or discontinuous transmission; the measurement signal/symbol is transmitted on the discontinuous symbol in the UCDS composed of the modified symbols.
  • each component signal of the discovery signal determines a configuration mode of each component signal; performing pattern modification on each component signal; determining each component signal or each component signal modified by the pattern
  • the transmission method solves the problem that the discovery signal applied to the unlicensed carrier in the related art has many problems, and needs to redesign the discovery signal, thereby reducing the occupation time and avoiding multiple interferences to other devices.
  • FIG. 1 is a flow chart of a method of processing a discovery signal according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram showing the position of each UCDS signal in the time domain in the method 1 according to the first embodiment of the present invention
  • FIG. 3 is a schematic diagram showing the location of resource elements of a CRS in Method 1 according to a preferred embodiment of the present invention
  • FIG. 4 is a schematic diagram showing the position of each UCDS signal in the time domain in the second method according to the preferred embodiment of the present invention.
  • FIG. 5 is a schematic diagram showing the location of resource elements of a CRS in Method 2 according to a preferred embodiment of the present invention
  • FIG. 6 is a schematic diagram showing the position of each UCDS signal in the time domain in the third method according to the preferred embodiment of the present invention.
  • FIG. 7 is a schematic diagram showing the location of resource elements of a CRS in Method 3 according to a preferred embodiment of the present invention.
  • FIG. 8 is a schematic diagram of resource element locations of a CRS antenna port 1 in accordance with a preferred embodiment of the present invention.
  • FIG. 9 is a schematic diagram showing the position of each UCDS signal in the time domain in the method 1 according to the second preferred embodiment of the present invention.
  • FIG. 10 is a schematic diagram showing the location of resource elements of a CRS in Method 1 according to a preferred embodiment 2 of the present invention
  • FIG. 11 is a schematic diagram showing the position of each UCDS signal in the time domain in the second method according to the second preferred embodiment of the present invention.
  • FIG. 12 is a schematic diagram showing the location of resource elements of a CRS in method 2 according to a preferred embodiment 2 of the present invention.
  • FIG. 13 is a schematic diagram showing the position of each UCDS signal in the time domain according to a preferred embodiment 3 of the present invention.
  • FIG. 14 is a schematic diagram showing the position of another UCDS signal in the time domain according to a preferred embodiment 3 of the present invention.
  • 15 is a schematic diagram showing the position of each UCDS signal in the time domain according to a preferred embodiment 4 of the present invention.
  • 16 is a schematic diagram showing the position of each UCDS signal in the time domain according to a preferred embodiment 5 of the present invention.
  • Figure 17 is a block diagram showing the structure of a processing device for discovering signals according to an embodiment of the present invention.
  • FIG. 1 is a flow chart of a method of processing a discovery signal in accordance with an embodiment of the present invention. As shown in FIG. 1, the method may include the following processing steps:
  • Step S102 Perform at least one of the following operations on each component signal of the discovery signal: determining a configuration manner of each component signal; performing pattern modification on each component signal; and determining a transmission manner of each component signal or each constituent signal modified by the pattern.
  • the discovery signal in the related art has many problems in applying to an unlicensed carrier, and it is necessary to redesign the discovery signal.
  • the method shown in FIG. 1 is used to process at least one of a configuration mode, a design mode, and a transmission mode of each component signal of the discovery signal, thereby solving various problems in the related art that the discovery signal is applied to an unlicensed carrier.
  • the problem of redesigning the discovery signal is required, thereby reducing the occupation time and avoiding multiple interferences to other devices.
  • pattern modification of each component signal may include one of the following operations:
  • Operation 1 According to the existing time-frequency resource location of each component signal of the discovery signal, select and retain the symbols in the time domain that are adjacent or close to each other in the constituent signals to form a discovery signal in the unlicensed carrier (Unlicensed Carrier– Discovery Signal (referred to as UCDS) for sending;
  • UCDS Unlicensed Carrier– Discovery Signal
  • Operation 2 Modify the time-frequency resource position of each component signal so that the positions of the component signals in the time domain are adjacent or similar, and use the modified symbols to form a UCDS for transmission.
  • the above discovery signals exist in the following two design ways:
  • Manner 1 According to the existing time-frequency resource position of each component signal of the discovery signal, symbols of adjacent or similar time domains in each component signal are selected and retained to form a UCDS for transmission.
  • the existing discovery signal duration is 1 subframe (FDD mode).
  • the CRS occupies symbol 0, symbol 4, symbol 7, symbol 11, SSS occupies symbol 5, PSS occupies symbol 6, CSI-RS It can be configured. If CSI-RS is not configured, the DS spans at least 12 symbols, which actually occupy at least 6 symbols.
  • the CRS can be selected to be transmitted on symbol 4, and symbol 0, symbol 7, and symbol 11 are not transmitted.
  • the SSS still occupies the symbol 5, and the PSS occupies the symbol 6. Therefore, the UCDS here is composed of CRS, PSS/SSS, and occupies symbol 4, symbol 5, and symbol 6. DS spans 3 symbols and its actual occupancy is also 3 symbols.
  • this method does not change or move the time domain position of the constituent signals, only selects and retains them, and sends signals that are close to each other; the advantage is that it is compatible with the prior art and has less changes.
  • Manner 2 Modify the time-frequency resource location of each component signal, especially the time domain location, such that the positions of the constituent signals in the time domain are adjacent or similar.
  • the modified symbols form the UCDS for transmission.
  • the existing discovery signal duration is 1 subframe (FDD mode).
  • the CRS occupies symbol 0, symbol 4, symbol 7, symbol 11, SSS occupies symbol 5, PSS occupies symbol 6, CSI-RS It can be configured. If CSI-RS is not configured, the DS spans at least 12 symbols, and it actually occupies at least 6 symbols.
  • the CRS can be selected to be transmitted on symbol 7, and not transmitted at symbol 0, symbol 4, or symbol 11.
  • SSS and PSS are changed to be sent on symbols 8 and 9, respectively. Therefore, UCDS occupies symbol 7, symbol 8, and symbol 9.
  • the time domain patterns of the UCDS component signals such as CRS, PSS, SSS, CSI-RS, etc. can be modified in the existing format such that the positions of the constituent signals in the time domain are adjacent or similar.
  • the CRS signal or the CSI-RS signal in the UCDS may be continuously transmitted before the PSS/SSS or continuously after the PSS/SSS, and may be continuously transmitted between the PSS and the SSS when the PSS and the SSS symbols are not adjacent.
  • the modification of the frequency domain resource is mainly applied to the scenario in which the signal in the UCDS occupies the same symbol, and needs to be in the frequency domain resource. Staggered.
  • the second method has the advantage of ensuring that all symbols of the UCDS can be transmitted continuously or in close proximity, which is more flexible and can control the number of symbols occupied by each component signal.
  • the modification of the above-mentioned frequency domain resources may also involve the problem that the use of the unlicensed carrier needs to occupy 80% of the nominal bandwidth.
  • the synchronization signal PSS/SSS only occupies 6 RBs in the middle of the frequency domain. Even if the base station can compete for the unlicensed carrier usage right to transmit the synchronization signal, it is likely to be preempted by other devices or base stations. Therefore, it can be in the frequency domain. Send PSS and/or SSS repeatedly.
  • the first mode cannot ensure that all the signals occupying the symbol positions in the UCDS are adjacent or similar, and the number of symbols occupied by the signals in the first mode may be limited.
  • the LBT/CCA mechanism is required to send the UCDS. If the channel is busy, UCDS cannot be sent normally, that is, UCDS may not be sent for a long time. At this time, RRM measurement performance and synchronization performance cannot be maintained. Therefore, UCDS is better able to satisfy LAA single RRM measurement performance ( Single-shot measurement).
  • UCDS For the UCDS pattern determined by the above mode one or the above mode two, it has been possible to ensure that the symbols in the UCDS are transmitted continuously (or similarly). To ensure UCDS single measurement performance, UCDS can be transmitted repeatedly and continuously.
  • the UCDS transmission period is 80ms (or aperiodic transmission), and there is a UCDS occasion (or burst) in one cycle.
  • the UCDS occasion duration is 1ms, and the UCDS is internal.
  • the time domain of each symbol in the 1ms pattern is continuous.
  • two or more UCDS occasions can be sent in one UCDS transmission period. These occasions (or bursts) are preferably consecutive in the time domain (the possibility of non-continuous repeated transmission is not excluded) ). For example: within 80ms, there are 2ms to send UCDS, which is 2ms continuous in the time domain. These 2ms can be called 2 UCDS bursts or 2 UCDS occasions. Of course, multiple UCDS occasions that are repeatedly transmitted in the time domain can be collectively referred to as one UCDS occasion.
  • the transmission mode of the known signal may be modified by using the above method 2, and the measurement signal/symbol is transmitted on the discontinuous symbol in the discovery signal.
  • the existing authorized carrier discovery signal duration can be 1 subframe (FDD mode).
  • the CRS can occupy symbol 0, symbol 4, symbol 7, and symbol 11, and the SSS can occupy the symbol 5, and the PSS.
  • the symbol 6 can be occupied, and the CSI-RS can be configured.
  • the measurement signals CRS and/or CSI-RS may also be transmitted on idle symbols such as symbol 1, symbol 2, symbol 3, symbol 8, symbol 9, symbol 10.
  • the existing discovery signal undergoes the above modified pattern as a UCDS pattern, which ensures that the symbols in the UCDS are continuously transmitted in the time domain, and also ensures the single measurement performance of the CDS.
  • the discontinuous symbols in the UCDS subframe can be modified in the above two ways, or The measurement signal/symbol is filled to satisfy or enhance the measurement performance.
  • the discontinuous symbols in the UCDS subframe can be modified or filled with measurement signals/symbols in the above two ways to satisfy or enhance the measurement performance. It can also be sent according to the original mode of each signal in the UCDS subframe, and the discontinuous symbols are not modified or filled, and the data mapping can be used to ensure continuous transmission in the time domain without affecting data transmission.
  • the unlicensed carrier device for example, LAA or WIFI
  • the unlicensed carrier resources are easily preempted, and the interference to other sites can be ignored.
  • the discovery signal is transmitted through the LBT/CCA or the discovery signal is directly transmitted through the SCS, and the problems such as the occupation time, multiple preemption, and multiple interference of the signal are weakened.
  • the traditional discovery signal DS can be used. It is better to use the traditional discovery signal DS for discovery, synchronization and measurement.
  • the two transmission modes of the discovery signal include the Rel-12 discovery signal transmission mode and the UCDS transmission mode.
  • the authorized carrier cell such as a PCell and/or an unlicensed carrier cell (eg, an unlicensed carrier access point or other access point) needs to transmit a discovery signal, and/or a discovery signal corresponding to the discovery signal before the access point transmits the discovery signal.
  • the configuration information is sent to the access point, and/or the UE.
  • the above UCDS may include but is not limited to at least one of the following:
  • PSS Primary synchronization signal
  • SSS secondary synchronization signal
  • CRS Cell-specific reference signal
  • CSI-RS Channel state information - reference signal
  • PSS, SSS, CRS and PRS are used for cell discovery and/or synchronization
  • CRS and CSI-RS are used for RRM measurement and/or CSI measurement.
  • the UCDS component signal may include not only at least one of the above signals, but also a modified form of the foregoing signal.
  • the foregoing sending manner may include but is not limited to one of the following:
  • Mode 1 Periodically, the UCDS can transmit according to a preset fixed period, offset, duration, and number of bursts.
  • the above method 1 can be further divided into the following three ways:
  • UCDS is sent at each cycle point through SCS, regardless of whether the cycle point is already occupied;
  • the short control signaling SCS mentioned in the present invention does not only refer to the SCS in the ETSI specification, but generally does not need to perform the idle channel assessment (CCA) and the first listen (LBT), but can directly send Short-term signal, channel function.
  • the signal and channel are transmitted within the SCS duration.
  • the LAA access point does not need to perform the Clear Channel Assessment (CCA) and the Listen After (LBT) function. Therefore, in order to ensure the friendly coexistence of different systems and devices in the unlicensed frequency band, the SCS transmission time is best. Need to meet certain regulatory requirements.
  • Some regions and countries may have additional names and definitions for SCS, collectively referred to herein as SCS. In some regions and countries, SCS may not be defined. For these regions and countries, SCS and similar rules may be defined (for example, the requirements for the length of transmission, and the duration of the fixed period of observation shall not be greater than the set ratio) for the non-occupied period.
  • the signal is sent.
  • the UCDS can be normally sent at the periodic point; if there is no competition to the unlicensed carrier, the UCDS is stopped once at the periodic point, and waits for the next periodic point, if the next periodic point If you have not competed for resources, you will continue to stop.
  • the UCDS can be normally sent at the periodic point; if there is no contention to the unlicensed carrier, the UCDS is stopped once at the periodic point, and the supplementary transmission is sent after the next time the non-authorized carrier is contending However, it is not required to be sent at a periodic point, that is, delayed transmission, which is actually an irregular periodic transmission.
  • Periodic transmission needs to be determined by an authorized carrier (eg, PCell) or other unlicensed carrier, or notify the SCell and/or UEs about the SCells sending UCDS (including at least one of the following: period, offset, duration, port, Power, burst (burst), the UE may detect the UCDS according to the determined transmission pattern or measurement pattern of the UCDS (including at least one of the following: period, offset, duration, port, power, number of bursts).
  • an authorized carrier eg, PCell
  • UEs including at least one of the following: period, offset, duration, port, Power, burst (burst)
  • burst burst
  • Manner 2 Aperiodic triggered transmission, which can trigger acyclic transmission of UCDS by, for example, PCell.
  • Aperiodic transmission requires an authorized carrier such as a PCell or other unlicensed carrier to inform the UE whether the SCell transmits UCDS and/or transmits configuration information of the UCDS.
  • the trigger signal that triggers the SCell to send the UCDS can be sent by wired or wireless mode between cells.
  • UCDS may have different effects on the constituent signals, it may trigger only one signal, multiple signals, or all the signals that the UCDS may constitute a signal, or a modified form of the above signals.
  • the information informing the UE whether the SCell transmits the UCDS and/or the configuration of transmitting the UCDS may be transmitted through RRC signaling, MAC signaling, or physical layer signaling (for example, DCI).
  • the neighboring cell is notified of the information about the UCDS sent by the SCell, and the measurement impact on the neighboring cell and the local cell is reduced.
  • the time-frequency resource location that triggers the SCell to transmit the UCDS trigger signal and/or informs the UE whether the SCell sends the UCDS signaling may be pre-configured or dynamically selected.
  • the pre-configured information may have a set period, subframe, symbol, resource element, etc., and the SCell and/or the UE only need to detect the trigger signal and/or signaling at these pre-configured points. Dynamic selection requires SCell and/or UE for blind detection.
  • Mode 3 Mixed mode transmission, that is, combination of periodic transmission and trigger transmission.
  • the sparse UCDS can be periodically sent through the SCS.
  • the PCell triggers the SCell to send the UCDS on the unlicensed carrier.
  • the hybrid mode transmits information that also needs to determine or notify the above two transmission modes, for example, information including a transmission pattern of the UCDS, a measurement pattern, and whether the UCDS is sent or not, and the SCell.
  • the SCell may send all the constituent signals of the UCDS, or may only transmit one or several constituent signals in the UCDS, because the requirements of the UCDS constituent signals are inconsistent, such as: synchronization requirements and RRM measurement.
  • Demand-dependent UCDS signals are not the same.
  • the SCell sends a pattern of UCDS (including at least one of the following: period, duration, offset) and can be adjusted as necessary.
  • each component signal of the UCDS can be independently configured, and of course, it can also be configured in combination.
  • the UCDS component signals can independently configure the period, offset, duration, subframe position, and time-frequency pattern. There may also be a constraint relationship between the constituent signals.
  • the UCDS may include PSS, SSS, CRS, CSI-RS, and each signal may be independently configured.
  • the CRS period is a multiple of the PSS and/or SSS period; or, the PSS and/or SSS period is a multiple of the CRS period; or, the CSI-RS period is a multiple of the CRS period; or, the CRS period is a multiple of the CSI-RS period; or, CSI-
  • the RS period is a multiple of the PSS and/or SSS period; alternatively, the PSS and/or SSS period is a multiple of the CSI-RS period.
  • the subframe position of each signal may be defined by a relationship, for example, the constraint CRS is located in a subframe in which the PSS and/or SSS are transmitted; or the CRS is located in a subframe in which the CSI-RS is transmitted; or, the CSI-RS is located.
  • UCDS can configure a uniform period, offset, duration, number of bursts, and so on.
  • the UCDS component signals may have different subframe positions and/or time-frequency configurations, such as subframes, symbols, and resource elements.
  • the period of UCDS (for example: including PSS, SSS and CRS, CSI-RS, other signals can be matched or not) can be configured as 40ms, 80ms, 160ms; duration can be configured from 1 subframe to 5 subframes; Within each duration of the period, each component signal of the UCDS may have different configuration or subframe information, for example, the PSS and/or the SSS may be sent only once, the CRS may be sent multiple times, and the CSI-RS and the PSS and/or the SSS have a subframe. Or a symbol offset relationship, and sub-frame or symbol information of each constituent signal.
  • a UCDS subframe may be defined as a subframe in which a UCDS is transmitted or a subframe in which a UE assumes that a UCDS exists.
  • the UCDS subframe may be one, two or more subframes.
  • the UCDS subframe may be periodic, non-periodic, or both.
  • each constituent signal of the UCDS in each embodiment is also applicable to the case where each constituent signal is transmitted as a UCDS alone, or a case where two, three, or a plurality of signal combinations are transmitted as UCDS.
  • the UCDS may include the PSS, the SSS, and the CRS.
  • the CRS time-frequency domain pattern designed in the first embodiment is also applicable to the scenario where the UCDS only includes the CRS.
  • the UCDS may include PSS, SSS, and CRS, and there is one symbol before the SSS and PSS symbols to transmit the CRS.
  • CRS with 2 symbols or multiple adjacent/similar symbols before the SSS and PSS symbols; or, there is 1 symbol after the SSS and PSS symbols to transmit CRS (ie, method 2 in the first embodiment) Or, there are 2 or more adjacent/similar symbols to transmit the CRS after the SSS and PSS symbols; or, there are equal or unequal numbers of symbols before and after the SSS and PSS symbols to transmit the CRS (ie, the method in the preferred embodiment 1) three).
  • the UCDS can include PSS, SSS, and CRS.
  • the PSS and SSS are sent on adjacent symbols, while the CSI-RS is not configured to transmit.
  • the preferred embodiment can include the following methods:
  • the SSS and the PSS are transmitted in the first subframe of the UCDS subframe or a certain subframe symbol 5 and symbol 6 after the offset.
  • the CRS is transmitted in the UCDS subframe symbol 4. That is, the symbols for transmitting UCDS are symbol 4, symbol 5, and symbol 6.
  • the CRS may be sent or transmitted multiple times in all downlink subframes or UCDS subframes.
  • SSS and PSS can be sent only once in a duration of UCDS.
  • the UCDS duration is 2 subframes in the UCDS period, or the UCDS is 2 subframes in one trigger transmission.
  • the symbols for transmitting the UCDS are: symbol 4, symbol 5, symbol 6 and symbols in the second subframe in the first subframe. 4;
  • the PSS/SSS is offset by one subframe, that is, symbol 4 in the first subframe and symbol 4, symbol 5, and symbol 6 in the second subframe.
  • FIG. 2 is a schematic diagram showing the position of each signal of the UCDS in the time domain in the method 1 according to the first embodiment of the present invention. As shown in Figure 2, it shows the transmission of UCDS in the time domain.
  • FIG. 3 is a schematic diagram showing the location of resource elements of a CRS in Method 1 according to a preferred embodiment of the present invention. As shown in FIG. 3, it indicates the time-frequency domain position of the CRS in the subframe. There may be an offset in the frequency domain location.
  • the resource element RE(k, l) of the CRS transmitted in FIG. 3 is (3, 4), (9, 4), where k is the frequency domain number of the resource element, and l is the resource.
  • the time domain number of the element if sorted according to the symbol of the subframe, the value of l is 0 to 13; of course, there may be 3 RE offsets in the frequency domain, namely (0, 4), (6, 4); In addition, there may be one, two, etc. RE offsets in the frequency domain.
  • the SSS and the PSS may be transmitted in the first subframe of the UCDS subframe or a certain subframe symbol 5 and symbol 6 after the offset.
  • the CRS is transmitted in the UCDS subframe symbol 7 (or symbol 0 of the second slot, the same below). That is, the symbols for transmitting UCDS are symbol 5, symbol 6, and symbol 7.
  • the CRS may be sent or transmitted multiple times in all downlink subframes or UCDS subframes.
  • SSS and PSS can be sent only once in a duration of UCDS.
  • the UCDS duration in the UCDS period is 2 subframes or the UCDS is 2 subframes in one trigger transmission.
  • the symbols for transmitting the UCDS are: symbol 5, symbol 6, symbol 7 and symbol 7 in the second subframe in the first subframe.
  • PSS/SSS is offset by one subframe, that is, symbol 7 in the first subframe and symbol 5, symbol 6, and symbol 7 in the second subframe.
  • FIG. 4 is a schematic diagram showing the position of each UCDS signal in the time domain in the second method according to the preferred embodiment 1 of the present invention. As shown in Figure 4, it shows the transmission of UCDS in the time domain.
  • FIG. 5 is a schematic diagram showing the location of resource elements of a CRS in Method 2 according to a preferred embodiment of the present invention. As shown in FIG. 5, it indicates the time-frequency domain position of the CRS in the subframe. There may be an offset in the frequency domain location.
  • the resource element RE(k, l) of the CRS transmitted in FIG. 5 is (0, 7), (6, 7); of course, there may be three RE offsets in the frequency domain, that is, (3, 7), ( 9,7); In addition, there may be one, two equal RE offsets in the frequency domain.
  • the SSS and the PSS may be transmitted in the first subframe of the UCDS subframe or a certain subframe symbol 5 and symbol 6 after the offset.
  • the CRS is transmitted in UCDS subframe symbols 4 and 7. That is, the symbols for transmitting the UCDS are symbol 4, symbol 5, symbol 6, and symbol 7.
  • the CRS may be sent or transmitted multiple times in all downlink subframes or UCDS subframes.
  • SSS, PSS can be UCDS is only sent once in a duration.
  • the UCDS duration is 2 subframes in the UCDS period, or the UCDS is 2 subframes in one trigger transmission.
  • the symbols for transmitting the UCDS are: symbol 4, symbol 5, symbol 6, symbol 7, and second sub-frame in the first subframe.
  • symbol 4, symbol 7; or, PSS/SSS is offset by one subframe, that is, symbol 4, symbol 7 in the first subframe and symbol 4, symbol 5, symbol 6, symbol 7 in the second subframe.
  • FIG. 7 is a schematic diagram showing the location of resource elements of a CRS in Method 3 according to a preferred embodiment of the present invention. As shown in FIG. 7, it indicates the time-frequency domain position of the CRS in the subframe. There may be an offset in the frequency domain location.
  • the resource element RE(k, l) of the CRS transmitted in FIG. 7 is (3, 4), (9, 4), (0, 7), (6, 7); There may be 3 RE offsets in the frequency domain, namely (0, 4), (6, 4), (3, 7), (9, 7); in addition, there may be one, 2 in the frequency domain. Equal RE offsets.
  • the CRS in the above three methods may be single port transmission, or may be two-port or multi-port transmission.
  • the RE format of single port transmission is shown in Figure 3, Figure 5 and Figure 7. 8 is a schematic diagram of resource element locations of CRS antenna port 1 in accordance with a preferred embodiment of the present invention. As shown in FIG. 8, it shows the RE format of port 1, in which the port 0 of the dual port is the same as the RE format of the single port.
  • port 1 also has the same number of RE offsets on the basis of FIG.
  • the UCDS can include PSS, SSS, and CRS.
  • PSS and SSS are sent in non-adjacent symbols.
  • CSI-RS is not configured to send.
  • the preferred embodiment can include the following methods:
  • the SSS is transmitted in the symbol 13 of the first subframe, and the PSS is transmitted in the symbol 2 of the second subframe.
  • the CRS is transmitted in symbol 0 of the second subframe. That is, the symbol for transmitting the UCDS is the symbol 13 of the first subframe, the symbol 0 of the second subframe, and the symbol 2.
  • FIG. 9 is a schematic diagram showing the position of each UCDS signal in the time domain in the first method according to the second preferred embodiment of the present invention. As shown in Figure 9, it shows the transmission of UCDS in the time domain.
  • FIG. 10 is a schematic diagram showing the location of resource elements of a CRS in Method 1 according to a preferred embodiment 2 of the present invention. As shown in FIG. 10, it indicates the time-frequency domain position of the CRS in the subframe. There may be an offset in the frequency domain location.
  • the resource element RE(k, l) of the CRS transmitted in FIG. 10 is (0, 0), (6, 0); of course, there may be three RE offsets in the frequency domain, that is, (3, 0), ( 9,0); In addition, there may be one, two equal RE offsets in the frequency domain.
  • the SSS can be transmitted in the symbol 13 of the first subframe, and the PSS is transmitted in the symbol 2 of the second subframe.
  • the CRS is transmitted in symbol 0 and symbol 1 of the second subframe. That is, the symbol for transmitting the UCDS is the symbol 13 of the first subframe, the symbol 0 of the second subframe, the symbol 1, and the symbol 2.
  • FIG. 11 is a schematic diagram showing the position of each UCDS signal in the time domain in the second method according to the second preferred embodiment of the present invention. As shown in Figure 11, it shows the transmission of UCDS in the time domain.
  • FIG. 12 is a schematic diagram showing the location of resource elements of a CRS in Method 2 according to a preferred embodiment 2 of the present invention. As shown in FIG. 12, it indicates the time-frequency domain position of the CRS in the subframe. There may be an offset in the frequency domain location.
  • the resource elements RE(k, l) of the CRS transmitted in FIG. 12 are (0, 0), (6, 0), (3, 1), (9, 1); of course, there may be 3 in the frequency domain.
  • RE offset that is, (3, 0), (9, 0), (0, 1), (6, 1); in addition, there may be one, two equal RE offsets in the frequency domain.
  • the CRS in the above two methods may be single port transmission, or may be two port or multi port transmission.
  • the RE format for single port transmission is shown in Figure 10 and Figure 12.
  • port 0 has the same RE format as the single port, and the RE format of port 1 can be offset by 3 REs in the frequency domain on a single port basis.
  • port 1 also has the same number of RE offsets.
  • the UCDS may include PSS, SSS, CRS, CSI-RS.
  • PSS and SSS are sent in adjacent symbols.
  • the transmission mode and the time domain/frequency domain pattern of the PSS, the SSS, and the CRS may be consistent with the various methods or the like described in the first preferred embodiment.
  • the CSI-RS can be transmitted in accordance with the method specified in 3GPP standard 36.211. That is, the UCDS may include: PSS, SSS, CRS, CSI-RS.
  • the base station does not transmit the CSI-RS in the time domain location where the PSS, SSS, and CRS are transmitted, or the UE assumes that there is no CSI-RS signal in the time domain location of the PSS, SSS, and CRS in the UCDS.
  • the SSS and the PSS are transmitted in the subframe symbol 5 and the symbol 6. If the CSI-RS is configured to be transmitted in the same subframe as the symbol 5 or the symbol 6, a collision occurs, so the base station may not transmit the CSI-RS in the subframe;
  • the frequency domain position of the CSI-RS may be changed to avoid the frequency domain position of the PSS, the SSS, and the CRS.
  • the SSS and the PSS are transmitted in the subframe symbol 5 and the symbol 6.
  • the CSI-RS is configured to be transmitted in the same subframe as the symbol 5 or the symbol 6, a collision occurs.
  • the CRS-RS may not be transmitted in the 6 RBs occupied by the SSS and the PSS, and the other frequency domains of the symbols 5 and 6.
  • the resource sends a CSI-RS.
  • the offset value between the CSI-RS and the SSS is set to n subframes, and the offset value needs to be notified to the UE.
  • the CSI-RS configuration in the existing 3GPP 36.211 Table 6.10.5.2-1 is restricted, and the configuration format in the existing configuration that makes the symbol position of the CSI-RS adjacent or close to the symbols occupied by other constituent signals in the UCDS is reserved. .
  • FIG. 13 is a schematic diagram showing the position of each UCDS signal in the time domain according to a preferred embodiment 3 of the present invention. As shown in FIG. 13, symbol 8 may transmit CRS or not transmit UCDS signals.
  • the existing CSI-RS time domain configuration is modified such that the symbol location of the CSI-RS is adjacent or close to the symbol occupied by other constituent signals in the UCDS.
  • the CSI-RS configuration can be modified to be transmitted on symbol 0, symbol 1 (symbol 7, symbol 8 of the subframe) of slot 1.
  • FIG. 14 is a schematic diagram showing the position of each UCDS signal in the time domain according to a preferred embodiment 3 of the present invention. As shown in FIG. 14, the UCDS occupies the symbol 4, the symbol 5, the symbol 6, the symbol 7, and the symbol 8. Of course, on the basis of FIG. 12, the CSI-RS changes the configuration, and is transmitted on the symbol 8 and the symbol 9, that is, the UCDS. Occupied symbol 5, symbol 6, symbol 7, symbol 8, symbol 9.
  • the UCDS may include PSS, SSS, CRS, CSI-RS.
  • PSS and SSS are sent in non-adjacent symbols.
  • the transmission mode and the time domain/frequency domain pattern of the PSS, the SSS, and the CRS may be consistent with the various methods or the like described in the above preferred embodiment 2.
  • the CSI-RS can be transmitted in accordance with the method specified in 3GPP standard 36.211. That is, the UCDS may include: PSS, SSS, CRS, CSI-RS.
  • the base station does not transmit the CSI-RS in the time domain location where the PSS, SSS, and CRS are transmitted, or the UE assumes that there is no CSI-RS signal in the time domain location of the PSS, SSS, and CRS in the UCDS.
  • the SSS and the PSS are transmitted in the symbol 13 (the first subframe) and the symbol 2 (the latter subframe). If the CSI-RS is configured to transmit on one of the corresponding symbols of the two subframes or one of the symbols, a collision may occur, so the base station may not transmit the CSI-RS in such subframes.
  • the frequency domain position of the PSI, the SSS, and the CRS are avoided by changing the frequency domain position of the CSI-RS.
  • the SSS and the PSS are transmitted in the symbol 13 (the first subframe) and the symbol 2 (the latter subframe). If the CSI-RS is configured to be sent on the corresponding symbols of the two subframes, a collision occurs. In this case, the CSI-RSs are not transmitted in the 6 RBs occupied by the SSS and the PSS, and the CSI-RS is transmitted in other frequency domain resources.
  • the offset value between the CSI-RS and the SSS is set to n subframes, and the offset value needs to be notified to the UE.
  • the CSI-RS configuration in the existing 3GPP 36.211 Table 6.10.5.2-1 is restricted, and the configuration format in the existing configuration that makes the symbol position of the CSI-RS adjacent or close to the symbols occupied by other constituent signals in the UCDS is reserved. .
  • the existing CSI-RS time domain configuration is modified such that the symbol location of the CSI-RS is adjacent or close to the symbol occupied by other constituent signals in the UCDS.
  • FIG. 15 is a diagram showing the position of each signal of the UCDS in the time domain according to a preferred embodiment 4 of the present invention. As shown in FIG. 15, the UCDS occupies the symbols 13, 0, 1, 2, and 3, wherein the symbol 13 is a symbol for transmitting the SSS in the previous subframe, and the other symbols are located in the next subframe. Other similar methods can exist as well, and are not enumerated here.
  • FIG. 16 is a schematic diagram showing the position of each UCDS signal in the time domain according to a preferred embodiment 5 of the present invention.
  • the UCDS may include PSS, SSS, CRS, and PRS.
  • PSS and SSS are sent in non-adjacent symbols.
  • the time domain resources occupied by CRS and PRS can remain unchanged. That is, the CRS occupies the symbols 0, 4, 7, and 11 in the subframe.
  • the PRS occupies symbols 3, 5, 6, 8, 9, 10, 12, 13 in the subframe.
  • SSS occupies symbol 1.
  • PSS occupies symbol 2.
  • the manner in which the UCDS is periodically transmitted through the LBT/CCA is mainly directed to the above.
  • the UCDS can be sent according to a periodic opportunity, that is, the UCDS can be transmitted according to a preset fixed period, offset, duration, and number of bursts.
  • the preset transmission parameters may include one or more of the plurality of parameters described above. However, it is necessary to satisfy the LBT/CCA success condition before it can be sent.
  • the UCDS can be normally sent at a preset transmission time point (the preset time point refers to a period of time determined by a parameter such as the period, offset, etc.); if there is no competition To the unlicensed carrier, the UCDS is stopped at this point in time. However, before the next time point and for a period of time after the current time point, if the unlicensed carrier is contending, the transmission may continue, but the UCDS is not required to be sent at a preset time point, in other words, it may be delayed. This method of transmission is actually an irregular periodic transmission.
  • the period of time is not necessarily limited to a preset time point, and may be set before a preset time point or include a preset time point.
  • the preset time points may be continuous in the time domain, and of course may be discontinuous in the time domain.
  • Method 1 Shorten the transmission cycle of UCDS.
  • the period of the existing discovery signal of the authorized carrier may be 40 ms, 80 ms, or 160 ms, and the transmission period of the UCDS may be set to be 10 ms, 20 ms, or 40 ms.
  • the UCDS transmission period is 10ms, then the probability of successfully sending UCDS once in a period of time (for example, within 160ms) will increase greatly.
  • the UCDS transmission window can be designed to increase the UCDS transmission opportunity.
  • the UCDS send window can be located after or before the preset time point of the UCDS, and the UCDS send window can also include the preset time point.
  • the UCDS transmission window and the preset time point may be continuous in the time domain or discontinuous in the time domain.
  • the UCDS transmission window is a time period in which a UCDS can be sent after a preset time point starting position, that is, the UCDS transmission window duration includes a preset time point.
  • the UCDS transmit window can be periodic, ie there is one UCDS transmit window in each UCDS cycle. If the UCDS does not compete for resources at a preset time point, it may continue to attempt to transmit within the UCDS transmission window after this time point before the next preset time point. If the transmission is successful, the next transmission opportunity needs to wait until Preset at the next point in time. If there is no contention in the UCDS transmission window, that is, the UCDS fails to be sent in the UCDS transmission window, the next transmission opportunity needs to wait until the next time point is preset.
  • Manner 3 In order to increase the success rate of UCDS transmission, and the UE detection cannot be too complicated, a dual-cycle setting may be considered. In addition to the preset long period, a short period is set to attempt to supplement the transmission of the UCDS. If the transmission fails at the periodic point of the preset long period, the UCDS may continue to be attempted to be transmitted at the periodic point of the subsequent short period. If the transmission succeeds at the preset long-period periodic point, the next transmission opportunity needs to wait until the next preset long-period periodic point, that is, the periodic transmission point at which the subsequent short period does not need to be performed.
  • the preset transmission parameter may include one or more of the above multiple parameters, and then the UCDS may transmit the time point as subframe 0, subframe 80, subframe 160, and the like.
  • the ability to send UCDS at these periodic points depends on the results of the LBT/CCA. For example, if the UCDS contends to the unlicensed carrier usage rights of subframe 0, the UCDS is sent successfully. However, if the subframe 80 does not compete for the unlicensed carrier, the base station cannot successfully transmit the UCDS in the subframe 80, and can only continue to wait for the next opportunity to contend for the subframe 160 resource to transmit the UCDS.
  • a shorter UCDS transmission period can be designed, for example, the UCDS transmission period is 40 ms.
  • the UCDS transmission window can be designed to be 20 ms, that is, the UCDS transmission time point is between (0ms-20ms), (80ms-100ms), (160ms-180ms), and the like.
  • UCDS can attempt to send within a preset point in time and time window. If the UCDS contends to the resource usage right of the subframe 0, the UCDS is successfully transmitted, and the next transmission opportunity of the UCDS is the subframe 80. If the UCDS does not compete to the subframe 80 to transmit the UCDS, then the LBT/CCA is continued to be executed within (80ms-100ms), attempting to transmit the UCDS.
  • the short period of the supplementary transmission UCDS can be designed to be 10 ms. If the UCDS contends to the resource usage right of the subframe 0, the UCDS is successfully transmitted, and the next transmission opportunity of the UCDS is the subframe 80. If the UCDS does not compete with the subframe 80 to transmit the UCDS, the UCDS may be transmitted by competing for the subframes 90, 100, and the like. For example, if the right to use the subframe 90 is contending and the UCDS is successfully sent, the next UCDS transmission opportunity is Subframe 160.
  • UCDS transmissions can send UCDS in frame alignment, subframe alignment, or symbol alignment.
  • UCDS is sent in frame alignment. For example, if the UCDS is sent in the transmission window of the foregoing mode 2, if the base station does not compete for resources at the time of the subframe 80, the base station does not need to wait until the next preset time point subframe 160, and can continue to compete (80ms-100ms) UCDS transmission window. The right to use the inner sub-frame 90. If it is contented, the UCDS can be sent in subframe 90.
  • the advantage of frame alignment is that there is no need to change the existing transmission time of each component symbol in UCDS. Domain location, for example: Existing PSS/SSS generally requires FDD to be sent on subframe 0 and subframe 5. Frame alignment may not change the subframe position they transmit; however, it has the disadvantage that the UCDS transmission may have fewer chances to be tried and the transmission probability is high.
  • the UCDS is sent in sub-frame alignment. For example, if the UCDS is sent in the transmission window of the foregoing mode 2, if the base station does not compete for resources at the time of the subframe 80, the base station may continue to compete for the subframes 81, 82, ..., 99 to attempt to transmit the UCDS.
  • This type of transmission involves the location of the subframes that make up the signal transmission, but the position of the symbols within the subframe can be changed.
  • the UCDS transmission opportunity in this way is higher than the above-mentioned UCDS mode according to frame alignment.
  • the base station can perform the CCA at any time. If there is no contention to the resource at the initial time of the subframe 80, the CCA may continue to be executed at the next moment to contend for the resource, and if the resource is contending, the UCDS is transmitted according to the symbol alignment. This method is the most flexible, and the UCDS transmission opportunity is higher than the first two transmission modes, but the existing symbol time domain position of each component signal in the UCDS needs to be changed.
  • the reserved signal may be a modified form of a symbol or symbol of a signal/channel such as CRS, CSI-RS, PSS/SSS, PRS, PDSCH, PDCCH, SRS, PUCCH, UCDS, for example: SIB or DCI/UCI information, etc. It carries information such as PLMN ID, carrier information (carrier number, carrier frequency, carrier usage status), LBT parameters (for example, whether to perform LBT, frame structure, etc.), the length of the reserved signal, and the like.
  • the UCDS transmission has a preset time point (can be determined by one or more of a preset period, offset, duration, number of bursts, UCDS transmission window, supplementary transmission short period, etc.), but due to non- The particularity of the authorized carrier causes the LBT/CCA to be in a position of uncertainty.
  • the location of the successful LBT/CCA and the length of time that can be occupied are related to the UCDS transmission location, duration, etc., and can be sent as follows:
  • Manner 1 After the LBT/CCA succeeds, if the starting point (ie, the LBT/CCA successful position) that the base station can transmit is later than the preset time point of the UCDS, only part of the UCDS symbol can be sent (that is, the UCDS is truncated according to the timing relationship. ); instead of sending the UCDS immediately, the complete UCDS may be sent according to the above symbol alignment (or subframe alignment, or frame alignment), and the blank signal may be sent between the LBT/CCA success location and the UCDS transmission location. Or UCDS part of the symbol.
  • Mode 3 When the LBT/CCA is successful, if the base station can transmit longer than a single UCDS burst Long, after sending a UCDS burst, the UCDS, or part of the UCDS symbol, or measurement signal, or control information can be repeatedly transmitted to satisfy the performance of the UCDS single measurement.
  • Figure 17 is a block diagram showing the structure of a processing device for discovering signals according to an embodiment of the present invention.
  • the processing device for the discovery signal may include: a processing module 10 configured to perform at least one of: performing a configuration on each component signal of the discovery signal: determining a configuration manner of each component signal; and performing pattern modification on each component signal; Determine the transmission method of each component signal or each component signal modified by the pattern.
  • the processing module 10 is configured to select and retain a symbol UCDS of each component signal that is adjacent or close to each other in the time domain according to the existing time-frequency resource location of each component signal of the discovery signal; or, for each component signal
  • the time-frequency resource location is modified so that the constituent signals are adjacent or close to each other in the time domain, and the modified symbols are used to form the UCDS for transmission.
  • the device shown in FIG. 17 solves the problem that the discovery signal applied to the unlicensed carrier in the related art has many problems, and needs to redesign the discovery signal, thereby reducing the occupation time and avoiding multiple interferences to other devices. .
  • the above UCDS may include but is not limited to at least one of the following:
  • PSS Primary synchronization signal
  • SSS secondary synchronization signal
  • CRS Cell-specific reference signal
  • CSI-RS Channel state information - reference signal
  • PSS, SSS, CRS and PRS are used for cell discovery and/or synchronization
  • CRS and CSI-RS are used for RRM measurement and/or CSI measurement.
  • the UCDS component signal may include not only at least one of the above signals, but also a modified form of the foregoing signal.
  • the foregoing sending manner may include but is not limited to one of the following:
  • Mode 1 Periodically, the UCDS can transmit according to a preset fixed period, offset, and duration.
  • the above method 1 can be further divided into the following three ways:
  • UCDS is sent at each cycle point through SCS, regardless of whether the cycle point is already occupied;
  • the UCDS can be normally sent at the periodic point; if there is no competition to the unlicensed carrier, the UCDS is stopped once at the periodic point, and waits for the next periodic point, if the next periodic point If you have not competed for resources, you will continue to stop.
  • the UCDS can be normally sent at the periodic point; if there is no contention to the unlicensed carrier, the UCDS is stopped once at the periodic point, and the supplementary transmission is sent after the next time the non-authorized carrier is contending However, it is not required to be sent at a periodic point, that is, delayed transmission, which is actually an irregular periodic transmission.
  • Periodic transmission needs to be determined by an authorized carrier (eg, PCell) or other unlicensed carrier, or notify the SCell and/or UEs about the SCells sending UCDS (including at least one of the following: period, offset, duration, port, Power), the UE may detect the UCDS according to the determined transmission pattern or measurement pattern of the UCDS (including at least one of the following: period, offset, duration, port, power).
  • an authorized carrier eg, PCell
  • the UE may detect the UCDS according to the determined transmission pattern or measurement pattern of the UCDS (including at least one of the following: period, offset, duration, port, power).
  • Manner 2 Aperiodic triggered transmission, which can trigger acyclic transmission of UCDS by, for example, PCell.
  • Aperiodic transmission requires an authorized carrier such as a PCell or other unlicensed carrier to inform the UE whether the SCell transmits UCDS and/or transmits configuration information of the UCDS.
  • the trigger signal that triggers the SCell to send the UCDS can be sent by wired or wireless mode between cells.
  • UCDS may have different effects on the constituent signals, it may trigger only one signal, multiple signals, or all the signals that the UCDS may constitute a signal, or a modified form of the above signals.
  • the information informing the UE whether the SCell transmits the UCDS and/or the configuration of transmitting the UCDS may be transmitted through RRC signaling, MAC signaling, or physical layer signaling (for example, DCI).
  • the time-frequency resource location that triggers the SCell to transmit the UCDS trigger signal and/or informs the UE whether the SCell sends the UCDS signaling may be pre-configured or dynamically selected.
  • the pre-configured information may have a set period, subframe, symbol, resource element, etc., and the SCell and/or the UE only need to detect the trigger signal and/or signaling at these pre-configured points. Dynamic selection requires SCell and/or UE for blind detection.
  • Mode 3 Mixed mode transmission, that is, combination of periodic transmission and trigger transmission.
  • the sparse UCDS can be periodically sent through the SCS.
  • the PCell triggers the SCell to send the UCDS on the unlicensed carrier.
  • the hybrid mode transmits information that also needs to determine or notify the above two transmission modes, for example, information including a transmission pattern of the UCDS, a measurement pattern, and whether the UCDS is sent or not, and the SCell.
  • the SCell can transmit all the constituent signals of the UCDS, or can only transmit the UCDS.
  • the reason for one or several of the constituent signals is that different requirements have different requirements for the UCDS component signals.
  • the synchronization requirements are different from the UCDS signals that the RRM measurement requirements depend on.
  • the SCell sends a pattern of UCDS (including at least one of the following: period, duration, offset) and can be adjusted as necessary.
  • each component signal of the UCDS can be independently configured, and of course, it can also be configured in combination.
  • the UCDS component signals can independently configure the period, offset, duration, subframe position, and time-frequency pattern. There may also be a constraint relationship between the constituent signals.
  • the UCDS may include PSS, SSS, CRS, CSI-RS, and each signal may be independently configured.
  • the CRS period is a multiple of the PSS and/or SSS period; or, the PSS and/or SSS period is a multiple of the CRS period; or, the CSI-RS period is a multiple of the CRS period; or, the CRS period is a multiple of the CSI-RS period; or, CSI-
  • the RS period is a multiple of the PSS and/or SSS period; alternatively, the PSS and/or SSS period is a multiple of the CSI-RS period.
  • the subframe position of each signal may be defined by a relationship, for example, the constraint CRS is located in a subframe in which the PSS and/or SSS are transmitted; or the CRS is located in a subframe in which the CSI-RS is transmitted; or, the CSI-RS is located.
  • UCDS can be configured with a uniform period, offset, duration, time-frequency pattern, and so on.
  • the UCDS component signals may have different subframe positions and/or time-frequency configurations, such as subframes, symbols, and resource elements.
  • the period of UCDS (for example: including PSS, SSS and CRS, CSI-RS, other signals can be matched or not) can be configured as 40ms, 80ms, 160ms; duration can be configured from 1 subframe to 5 subframes; Within each duration of the period, each component signal of the UCDS may have different configuration or subframe information, for example, the PSS and/or the SSS may be sent only once, the CRS may be sent multiple times, and the CSI-RS and the PSS and/or the SSS have a subframe. Or a symbol offset relationship, and sub-frame or symbol information of each constituent signal.
  • a UCDS subframe may be defined as a subframe in which a UCDS is transmitted or a subframe in which a UE assumes that a UCDS exists.
  • the UCDS subframe may be one, two or more subframes.
  • the UCDS subframe may be periodic, or may be a subframe that triggers transmission of the UCDS, or both.
  • the discovery signal in the related art has many problems in applying to the unlicensed carrier, and the problem of redesigning the discovery signal is required, thereby reducing the occupation time and avoiding multiple interferences to other devices.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, thereby Storing them in a storage device is performed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that herein, or separately fabricated into individual integrated circuit modules, or Multiple of these modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the method and apparatus for processing a discovery signal provided by the embodiment of the present invention have the following beneficial effects: avoiding redesigning the discovery signal, reducing the occupation time, and avoiding causing multiple interferences to other devices.

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Abstract

本发明公开了一种发现信号的处理方法及装置，在上述方法中，对发现信号各组成信号执行以下操作至少之一：确定各组成信号的配置方式；对各组成信号进行图样修改；确定各组成信号或经过图样修改后的各组成信号的发送方式。根据本发明提供的技术方案，减少占用时长，且避免对其他设备造成多次干扰。

Description

发现信号的处理方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种发现信号的处理方法及装置。
背景技术
长期演进使用非授权载波(Long Term Evolution–Unlicensed，简称为LTE-U)是指在非授权的载波中部署LTE，用来满足无线通信***日益增长的容量需求和提高非授权频谱的使用效率，是LTE以及未来无线通信可能的一个重要演进方向。在设计LTE-U时，需要考虑如何与无线保真(Wireless Fidelity，简称为WiFi)、雷达等异***以及LTE-U同***之间公平友好的竞争非授权载波来进行数据传输，同时需要尽可能的不影响和保留LTE技术特性。根据第三代合作伙伴计划(3GPP)标准会议的表述，LTE-U***也可称为LTE授权载波辅助接入(LTE Licensed Assisted Access，简称为LAA)***。
对于使用非授权载波的通信***而言，需要避免使用在非授权载波中已有站点正在使用的非授权载波，否则会造成***间彼此干扰。所以在一些国家(例如：欧洲和日本)，对于非授权载波强制要求支持先听后说(Listen before Talk，简称为LBT)功能。在使用某个非授权载波之前，需要执行空闲信道评估(Clear Channel Assessment，简称为CCA)功能，如果发现存在设备正在使用该非授权载波或者检测到信号能量超过CCA门限，则延迟接入；如果发现信道空闲或者检测的信号能量低于CCA门限，则占用该非授权载波。
因此，LBT/CCA会限制LAA参考信号在占用非授权载波之前发送。欧洲电信标准协会(ETSI)EN 301893规定：可以利用短控制信令(Short Control Signalling，简称为SCS)来发送管理和控制帧(例如：ACK/NACK信号)，并且不需要感知当前信道空闲，也即发送前不需要执行LBT/CCA。但是SCS发送有严格的限定：如果使用SCS，在50ms的观察周期内，自适应设备的短信令传输占空比最大不超过5％，也即2.5ms。
非授权载波的使用同样需要解决小区发现、同步、无线资源管理(Radio Resource Management，简称为RRM)测量等问题，3GPP Rel-12规定的发现信号(Discovery Signal，简称为DS)可以作为一个研究参考。
目前Rel-12定义的DS组成为：主/辅同步信号(Primary/Secondary Synchronization Signal，简称为PSS/SSS)、小区专有参考信号(Cell-specific Reference Signal，简称为 CRS)、信道状态信息-参考信号(Channel State Information-Reference Signal，简称为CSI-RS)可配置。频分双工(FDD)模式下每个周期内DS持续时间(duration)可以为1到5个连续子帧。时分双工(TDD)模式下DS持续时间可以为2到5个连续子帧。
针对各组成信号：CRS在所有下行子帧和特殊子帧下行部分(Downlink part of the special subframe，简称为DwPTS)上通过天线端口0发送。PSS在FDD每个周期第一个子帧或TDD每个周期第二个子帧上发送。SSS在每个周期的第一个子帧上发送。non-zero-power CSI-RS在每个周期内0个或更多个子帧上发送。
根据上述现有技术可以发现(实际上DS各组成信号的RE位置或图样与Rel-12前各独立信号的RE位置或图样是一致的)：
针对FDD而言，现有DS duration至少为1个子帧，在这1个子帧中，CRS占用符号0、符号4、符号7以及符号11，SSS占用符号5，PSS占用符号6，CSI-RS可配。如果没有配置CSI-RS，DS至少跨越了12个符号，实际占用至少为6个符号。
针对TDD而言，现有DS duration至少为2个子帧，在这2个子帧中，CRS占用第1个子帧和第2个子帧中的符号0、符号4、符号7、符号11。SSS占用第1个子帧的符号13。PSS占用第2个子帧的符号2。CSI-RS可配，如果没有配置CSI-RS，DS至少跨越了26个符号，其实际占用至少为10个符号。
非授权载波使用有其特殊性，存在使用前需要执行LBT/CCA机制和最大占用时长的限制，DS内部多符号不连续发送涉及到多次占用(如果按符号发送)或占用时间过长(一次预留整个DS时长、需发送占用或预留信号)问题，这就要求对发现信号的图样进行重新设计以减少占用次数或占用时长。
针对欧洲地区无LBT/CCA的SCS发送方式，SCS有严格的时间要求，即在50ms的观察周期内，自适应设备的短信令传输占空比最大不超过5％，也即2.5ms。这也要求减少DS占用时长，同时DS内部多符号不连续发送也会对正在竞争资源或已占用资源的用户造成多次干扰。因此也需要对发现信号的图样进行重新设计以减少占用时长，且避免对其他设备造成多次干扰，同时让出一部分SCS资源用于其它必要短信令发送。
综上所述，需要对相关技术中非授权载波中的发现信号进行重新设计，在满足和匹配非授权载波使用的特殊要求前提下，将发现信号的资源占用降到最低、且避免多次干扰问题的出现。
发明内容
本发明实施例提供了一种发现信号的处理方法及装置，以至少解决相关技术中的发现信号应用于非授权载波存在诸多问题，需要对发现信号进行重新设计的问题。
根据本发明实施例的一个方面，提供了一种发现信号的处理方法。
根据本发明实施例的发现信号的处理方法包括：对发现信号各组成信号执行以下操作至少之一：确定各组成信号的配置方式；对各组成信号进行图样修改；确定各组成信号或经过图样修改后的各组成信号的发送方式。
优选地，对各组成信号进行图样修改包括：根据各组成信号的现有时频资源位置，选取和保留各组成信号中时域彼此相邻或相近的符号组成非授权载波中的发现信号(UCDS)进行发送；或者，对各组成信号的时频资源位置进行修改，以使各组成信号在时域的位置相邻或相近，并采用修改后的符号组成UCDS进行发送。
优选地，对各组成信号的时频资源位置进行修改包括：对各组成信号的时域位置进行修改。
优选地，UCDS包括以下至少之一：主同步信号(PSS)；辅同步信号(SSS)；小区专有参考信号(CRS)；信道状态信息-参考信号(CSI-RS)；位置参考信号(PRS)；其中，PSS、SSS、CRS和PRS用于小区发现和/或同步，CRS和CSI-RS用于无线资源管理(RRM)测量和/或CSI测量。
优选地，UCDS包括PSS、SSS、CRS、PRS、CRS以及CSI-RS中单个信号的修改形式或者至少两个信号的修改形式的组合。
优选地，发送方式包括以下之一：周期性发送；非周期触发式发送；周期性发送与非周期触发式发送相结合的混合方式发送。
优选地，发送方式还包括：在各组成信号的传统发现信号发送模式与经过图样修改后的各组成信号的UCDS发送模式之间进行切换。
优选地，周期性发送包括以下之一：通过短控制信令(SCS)在每个周期点均发送UCDS；在竞争到非授权载波的情况下，在当前周期点上正常发送UCDS；在未竞争到非授权载波的情况下，则在当前周期点停止发送一次UCDS，而等待下个周期点，如果在下个周期点还未竞争到非授权载波，则继续停止发送一次UCDS；在竞争到非授权载波的情况下，在当前周期点上正常发送UCDS；在未竞争到非授权载波的情况下，则在当前周期点停止发送一次UCDS，而在下次竞争到非授权载波后，补充发送UCDS，其中，补充发送UCDS为不规则的周期发送。
优选地，周期性发送包括以下之一：通过先听后说LBT或空闲信道评估CCA按照预设发送参数集合发送UCDS，其中，预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目；在竞争到非授权载波的情况下，在当前时间点上发送UCDS；在未竞争到非授权载波的情况下，则在当前周期点停止发送一次UCDS，而在下个时间点之前的时间段内，如果重新竞争到非授权载波，则继续发送UCDS，其中，继续发送UCDS为不规则的周期发送，下个时间点位于当前时间点之后，当前时间点和下个时间点均由预设发送参数集合确定，预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目。
优选地，UCDS的发送策略包括以下之一：缩短UCDS的发送周期；采用发送窗增加UCDS的发送机会，其中，发送窗的设计方式包括以下之一：发送窗位于预设时间点之前、发送窗位于预设时间点之后、发送窗包含预设时间点，预设时间点由预设发送参数集合确定，预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目；采用第一周期和第二周期配合发送UCDS，其中，第一周期大于第二周期，第二周期用于在第一周期未能成功发送UCDS的情况下，在第二周期补充发送UCDS。
优选地，在采用发送窗增加UCDS的发送机会的情况下，发送窗由基站确定并由基站发送至终端；或者，在采用第一周期和第二周期配合发送UCDS的情况下，第一周期和第二周期由基站确定并由基站发送至终端。
优选地，非周期触发式发送采用授权载波或非授权载波通知用户设备(UE)与该UE对应的辅小区(SCell)是否发送UCDS和/或发送UCDS的配置信息。
优选地，触发SCell发送UCDS的触发信号是通过小区之间有线或无线方式发送的。
优选地，通过无线资源控制(RRC)信令、媒体接入控制(MAC)信令或者物理层信令将SCell是否发送UCDS和/或发送UCDS的配置信息通知给UE。
优选地，采用预先配置或动态选择的方式触发SCell发送UCDS的触发信号和/或通知UE有关SCell是否发送UCDS的信令的时频资源位置。
优选地，配置方式包括以下之一：独立配置方式、组合配置方式。
优选地，在各组成信号采用独立配置方式的情况下，各组成信号独立配置周期、偏置、持续时间、子帧位置、时频图样。
优选地，各组成信号的周期之间存在预设关系限定。
优选地，各组成信号所在的子帧位置之间存在预设关系限定。
优选地，各组成信号配置统一的周期、偏置、持续时间，其中，各组成信号具有不同的子帧位置和/或时频配置。
优选地，UCDS子帧为周期性子帧和/或非周期子帧，其中，UCDS子帧为发送UCDS的子帧或者UE假设UCDS存在的子帧。
优选地，UCDS满足LAA单次RRM测量性能。
优选地，UCDS满足LAA单次RRM测量性能的条件包括以下之一：在一个UCDS发送周期内发送至少两个UCDS occasions或UCDS bursts，其中，至少两个UCDS occasions或UCDS bursts在时域上连续发送或非连续重复发送；在修改后的符号组成的UCDS内的不连续符号上发送测量信号/符号。
根据本发明实施例的另一方面，提供了一种发现信号的处理装置。
根据本发明实施例的发现信号的处理装置包括：处理模块，设置为对发现信号各组成信号执行以下操作至少之一：确定各组成信号的配置方式；对各组成信号进行图样修改；确定各组成信号或经过图样修改后的各组成信号的发送方式。
优选地，处理模块，设置为根据发现信号各组成信号的现有时频资源位置，选取和保留各组成信号中时域彼此相邻或相近的符号组成UCDS进行发送；或者，对各组成信号的时频资源位置进行修改，以使各组成信号在时域的位置相邻或相近，并采用修改后的符号组成UCDS进行发送。
优选地，处理模块，设置为对各组成信号的时域位置进行修改。
优选地，UCDS包括以下至少之一：PSS；SSS；CRS；CSI-RS；PRS；其中，PSS、SSS、CRS和PRS用于小区发现和/或同步，CRS和CSI-RS用于RRM测量和/或CSI测量。
优选地，UCDS包括PSS、SSS、CRS、PRS、CRS以及CSI-RS中单个信号的修改形式或者至少两个信号的修改形式的组合。
优选地，发送方式包括以下之一：周期性发送；非周期触发式发送；周期性发送与非周期触发式发送相结合的混合方式发送。
优选地，发送方式还包括：在各组成信号的传统发现信号发送模式与经过图样修改后的各组成信号的UCDS发送模式之间进行切换。
优选地，周期性发送包括以下之一：通过SCS在每个周期点均发送UCDS；在竞争到非授权载波的情况下，在当前周期点上正常发送UCDS；在未竞争到非授权载波的情况下，则在当前周期点停止发送一次UCDS，而等待下个周期点，如果在下个周 期点还未竞争到非授权载波，则继续停止发送一次UCDS；在竞争到非授权载波的情况下，在当前周期点上正常发送UCDS；在未竞争到非授权载波的情况下，则在当前周期点停止发送一次UCDS，而在下次竞争到非授权载波后，补充发送UCDS，其中，补充发送UCDS为不规则的周期发送。
优选地，周期性发送包括以下之一：通过先听后说LBT或空闲信道评估CCA按照预设发送参数集合发送UCDS，其中，预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目；在竞争到非授权载波的情况下，在当前时间点上发送UCDS；在未竞争到非授权载波的情况下，则在当前周期点停止发送一次UCDS，而在下个时间点之前的时间段内，如果重新竞争到非授权载波，则继续发送UCDS，其中，继续发送UCDS为不规则的周期发送，下个时间点位于当前时间点之后，当前时间点和下个时间点均由预设发送参数集合确定，预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目。
优选地，UCDS的发送策略包括以下之一：缩短UCDS的发送周期；采用发送窗增加UCDS的发送机会，其中，发送窗的设计方式包括以下之一：发送窗位于预设时间点之前、发送窗位于预设时间点之后、发送窗包含预设时间点，预设时间点由预设发送参数集合确定，预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目；采用第一周期和第二周期配合发送UCDS，其中，第一周期大于第二周期，第二周期用于在第一周期未能成功发送UCDS的情况下，在第二周期补充发送UCDS。
优选地，在采用发送窗增加UCDS的发送机会的情况下，发送窗由基站确定并由基站发送至终端；或者，在采用第一周期和第二周期配合发送UCDS的情况下，第一周期和第二周期由基站确定并由基站发送至终端。
优选地，非周期触发式发送采用授权载波或非授权载波通知用户设备UE与该UE对应的SCell是否发送UCDS和/或发送UCDS的配置信息。
优选地，触发SCell发送UCDS的触发信号是通过小区之间有线或无线方式发送的。
优选地，通过RRC信令、MAC信令或者物理层信令将SCell是否发送UCDS和/或发送UCDS的配置信息通知给UE。
优选地，采用预先配置或动态选择的方式触发SCell发送UCDS的触发信号和/或通知UE有关SCell是否发送UCDS的信令的时频资源位置。
优选地，配置方式包括以下之一：独立配置方式、组合配置方式。
优选地，在各组成信号采用独立配置方式的情况下，各组成信号独立配置周期、 偏置、持续时间、子帧位置、时频图样。
优选地，各组成信号的周期之间存在预设关系限定。
优选地，各组成信号所在的子帧位置之间存在预设关系限定。
优选地，各组成信号配置统一的周期、偏置、持续时间、时频图样，其中，各组成信号具有不同的子帧位置和/或时频配置。
优选地，UCDS子帧为周期性子帧和/或非周期子帧，其中，UCDS子帧为发送UCDS的子帧或者UE假设UCDS存在的子帧。
优选地，UCDS满足LAA单次RRM测量性能。
优选地，UCDS满足LAA单次RRM测量性能的条件包括以下之一：在一个UCDS发送周期内发送至少两个UCDS occasions或UCDS bursts，其中，至少两个UCDS occasions或UCDS bursts在时域上连续发送或非连续重复发送；在修改后的符号组成的UCDS内的不连续符号上发送测量信号/符号。
通过本发明实施例，采用对发现信号各组成信号执行以下操作至少之一：确定各组成信号的配置方式；对各组成信号进行图样修改；确定各组成信号或经过图样修改后的各组成信号的发送方式，解决了相关技术中的发现信号应用于非授权载波存在诸多问题，需要对发现信号进行重新设计的问题，进而减少占用时长，且避免对其他设备造成多次干扰。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的发现信号的处理方法的流程图；
图2是根据本发明优选实施例一的方法一中UCDS各信号在时域的位置示意图；
图3是根据本发明优选实施例一的方法一中CRS的资源元素位置示意图；
图4是根据本发明优选实施例一的方法二中UCDS各信号在时域的位置示意图；
图5是根据本发明优选实施例一的方法二中CRS的资源元素位置示意图；
图6是根据本发明优选实施例一的方法三中UCDS各信号在时域的位置示意图；
图7是根据本发明优选实施例一的方法三中CRS的资源元素位置示意图；
图8是根据本发明优选实施例的CRS天线端口1的资源元素位置的示意图；
图9是根据本发明优选实施例二的方法一中UCDS各信号在时域的位置示意图；
图10是根据本发明优选实施例二的方法一中CRS的资源元素位置示意图；
图11是根据本发明优选实施例二的方法二中UCDS各信号在时域的位置示意图；
图12是根据本发明优选实施例二的方法二中CRS的资源元素位置示意图；
图13是根据本发明优选实施例三的一种UCDS各信号在时域的位置示意图；
图14是根据本发明优选实施例三的另一种UCDS各信号在时域的位置示意图；
图15是根据本发明优选实施例四的UCDS各信号在时域的位置示意图；
图16是根据本发明优选实施例五的UCDS各信号在时域的位置示意图；
图17是根据本发明实施例的发现信号的处理装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
图1是根据本发明实施例的发现信号的处理方法的流程图。如图1所示，该方法可以包括以下处理步骤：
步骤S102：对发现信号各组成信号执行以下操作至少之一：确定各组成信号的配置方式；对各组成信号进行图样修改；确定各组成信号或经过图样修改后的各组成信号的发送方式。
相关技术中的发现信号应用于非授权载波存在诸多问题，需要对发现信号进行重新设计的问题。采用如图1所示的方法，对发现信号各组成信号的配置方式、设计方式以及发送方式中的至少之一进行处理，由此解决了相关技术中的发现信号应用于非授权载波存在诸多问题，需要对发现信号进行重新设计的问题，进而减少占用时长，且避免对其他设备造成多次干扰。
优选地，在步骤S102中，对各组成信号进行图样修改可以包括以下操作之一：
操作一、根据发现信号各组成信号的现有时频资源位置，选取和保留各组成信号中时域彼此相邻或相近的符号组成非授权载波中的发现信号(Unlicensed Carrier– Discovery Signal，简称为UCDS)进行发送；
操作二、对各组成信号的时频资源位置进行修改，以使各组成信号在时域的位置相邻或相近，并采用修改后的符号组成UCDS进行发送。
在优选实施例中，上述发现信号存在以下两种设计方式：
方式一、根据发现信号各组成信号的现有时频资源位置，选取和保留各组成信号中时域彼此相邻或相近的符号，组成UCDS进行发送。
例如：现有发现信号duration为1个子帧(FDD模式)，在这1个子帧中，CRS占用符号0、符号4、符号7、符号11，SSS占用符号5，PSS占用符号6，CSI-RS可配，如果没有配置CSI-RS，则DS至少跨越了12个符号，其实际占用了至少为6个符号。
可以选取CRS在符号4上发送，符号0、符号7、符号11不发送CRS。SSS仍占用符号5、PSS占用符号6。因此，此处的UCDS由CRS、PSS/SSS组成，占用符号4、符号5、符号6。DS跨越了3个符号，其实际占用也为3个符号。
需要说明的是，此种方式不会更改或移动组成信号的时域位置，只会进行选择和保留，发送它们彼此之间接近的信号；其优势在于：与现有技术兼容且改动较小。
方式二、修改各组成信号的时频资源位置，特别是时域位置，使得各组成信号在时域的位置相邻或相近。修改后的符号组成UCDS进行发送。
例如：现有发现信号duration为1个子帧(FDD模式)，在这1个子帧中，CRS占用符号0、符号4、符号7、符号11，SSS占用符号5，PSS占用符号6，CSI-RS可配，如果没有配置CSI-RS，DS至少跨越了12个符号，其实际占用至少为6个符号。
可以选择CRS在符号7上发送，在符号0、符号4、符号11不发送。SSS和PSS分别更改为在符号8和符号9上发送。因此，UCDS占用符号7、符号8、符号9。
此处，同样有其他选择方法，譬如：SSS和PSS时域位置不变，更改CRS的时域位置，例如：符号3、符号4、符号7、符号8发送CRS，即UCDS的符号位置为符号3、符号4、符号5、符号6、符号7、符号8。
或者，CRS、PSS、SSS、CSI-RS等UCDS组成信号的时域图样都可以在现有格式上进行修改，从而使得各组成信号在时域的位置相邻或相近。UCDS中的CRS信号或CSI-RS信号可以在PSS/SSS之前连续发送或在PSS/SSS之后连续发送，当PSS和SSS符号不相邻时，可以在PSS和SSS之间连续发送。
频域资源的修改主要应用于UCDS中信号占用相同符号的场景，需要在频域资源 上错开。上述方式二的优势在于能够确保UCDS所有符号能够连续或相近进行发送，其灵活性较好，并且可以控制各组成信号占用的符号个数。
上述频域资源的修改还可以涉及到非授权载波使用需要占用名义带宽80％的问题。例如：同步信号PSS/SSS仅占用频域中间的6个RB，即使基站能够竞争到非授权载波使用权来发送同步信号，也很有可能被其他设备或基站所抢占，因此，可以在频域上重复发送PSS和/或SSS。
上述方式二与方式一相比，方式一有时无法保证UCDS中所有信号占用符号位置相邻或相近，且方式一中信号所占符号数目会存在限制。
对于非授权载波使用场景，如果没有SCS以及类似规则，则需要使用LBT/CCA机制才能发送UCDS。如果信道繁忙，则无法保证UCDS正常发送，也即有可能很长时间都无法发送UCDS，这时，RRM测量性能以及同步性能将无法维持，所以，UCDS最好能够满足LAA单次RRM测量性能(single-shot measurement)。
对于通过上述方式一或上述方式二确定的UCDS图样，已经能够确保UCDS内各符号连续(或距离相近)发送。为保证UCDS单次测量性能，可以重复且连续发送UCDS。例如：UCDS发送周期为80ms(或非周期发送)，一个周期内存在一个UCDS时机(occasion)(或称为突发数目(burst))，该UCDS occasion持续时间(duration)为1ms，UCDS内部即1ms图样内各符号时域连续。
为满足single-shot measurement性能，一个UCDS发送周期内可以发送两个或多个UCDS occasions(或bursts)，这些occasions(或bursts)在时域上优选连续(不排除非连续重复发送这种可能性)。例如：在80ms内，有2ms发送UCDS，这2ms在时域上连续。这2ms可以称为2个UCDS bursts或者2个UCDS occasions，当然也可以将重复发送的在时域上连续的多个UCDS occasions统称为1个UCDS occasion。
或者，为满足UCDS单次测量性能，可以采用上述方式二，修改已知信号的发送图样，在发现信号内不连续符号上发送测量信号/符号。例如：现有授权载波发现信号duration可以为1个子帧(FDD模式)，在这1个子帧中，CRS可以占用符号0、符号4、符号7、符号11，而SSS可以占用符号5，以及PSS可以占用符号6，CSI-RS可配。此外，还可以在符号1、符号2、符号3、符号8、符号9、符号10等空闲符号上发送测量信号CRS和/或CSI-RS。现有发现信号经过上述修改后的图样为UCDS图样，这种方式既可以确保UCDS内各符号时域连续发送，也可以确保CDS单次测量性能。
为了不影响数据发送时数据或PDSCH的映射，按照上述两种方式修改、或在UCDS子帧中非连续符号上填充测量信号/符号来保证UCDS连续发送不是必须的。
当没有数据发送时，UCDS子帧中的非连续符号可以按照上述两种方式修改、或 填充测量信号/符号来满足或增强测量性能。
当有数据发送时，UCDS子帧中的非连续符号可以按照上述两种方式修改、或填充测量信号/符号来满足或增强测量性能。也可以按照UCDS子帧内各信号原方式发送，对其中不连续符号不进行修改或填充，可以利用数据映射来保证时域连续发送，同时不影响数据发送。
另外，针对一些特殊场景，如非授权载波设备(例如：LAA或WIFI)稀疏部署的场景，非授权载波资源很容易抢占到、对其他站点的干扰可以忽略的情况下，此时无论是LAA站点通过LBT/CCA来发送发现信号，还是通过SCS直接发送发现信号，发现信号的占用时长、多次抢占、多次干扰等问题就会弱化。这时候可以使用传统发现信号DS。利用传统发现信号DS进行发现、同步和测量效果会更好。
针对不同场景，可引入一种发现信号的两种发送模式切换机制。发现信号的两种发送模式包括Rel-12发现信号发送模式和UCDS发送模式。授权载波小区如PCell和/或非授权载波小区(例如：非授权载波接入点或其他接入点)需要在接入点发送发现信号前，将发现信号的发送模式、和/或发现信号相应的配置信息发送给所述接入点、和/或UE。
优选地，上述UCDS可以包括但不限于以下至少之一：
(1)主同步信号(PSS)；
(2)辅同步信号(SSS)；
(3)小区专有参考信号(CRS)；
(4)信道状态信息-参考信号(CSI-RS)；
(5)位置参考信号(PRS)；
其中，PSS、SSS、CRS和PRS用于小区发现和/或同步，CRS和CSI-RS用于RRM测量和/或CSI测量。
需要说明的是，UCDS组成信号不但可以包括上述信号至少之一，而且可以包括上述信号的修改形式。
优选地，上述发送方式可以包括但不限于以下之一：
方式一、周期性发送，UCDS可以按照预设固定的周期、偏移、持续时间、突发数目进行发送。
上述方式一又可以分为以下三种方式：
(1)通过SCS在每个周期点都发送UCDS，无论该周期点是否已经被占用；
需要说明的是，本发明中提及的短控制信令SCS不单单指ETSI规定中的SCS，而泛指不需要执行空闲信道评估(CCA)和先听后说(LBT)，而直接可发送短时的信号、信道的功能。在SCS时长内发送信号、信道，LAA接入点不需要执行空闲信道评估(CCA)和先听后说(LBT)功能，所以为保证非授权频段不同***和设备友好共存，SCS发送时长最好需要满足一定的管制要求。有些地区和国家对于SCS可能有另外的名称和定义，这里统称为SCS。还有些地区和国家可能没有定义SCS，针对这些地区和国家可以定义SCS以及类似规则要求(例如对发送时长的要求，在固定时长的观察期内发送时长不得大于设定比例)来进行非占用期的信号发送。
(2)如果竞争到非授权载波，则可以在该周期点上正常发送UCDS；如果没有竞争到非授权载波，则该周期点停发一次UCDS，而等待下一个周期点，如果下个周期点还没有竞争到资源，则继续停发。
(3)如果竞争到非授权载波，则可以在该周期点上正常发送UCDS；如果没有竞争到非授权载波，则该周期点停发一次UCDS，而在下次竞争到非授权载波后，补充发送，但不要求一定在周期点上，也即延迟发送，其实际上是一种不规则的周期发送。
周期性发送需要通过授权载波(例如：PCell)或其他非授权载波来确定、或通知SCell和/或UEs有关SCells发送UCDS的图样(包括以下至少之一：周期、偏移、持续时间、端口、功率、突发数目(burst))，UE可以根据确定的UCDS的发送图样或测量图样(包括以下至少之一：周期、偏移、持续时间、端口、功率、突发数目)来检测UCDS。
方式二、非周期触发式发送，可以通过例如PCell来触发UCDS的非周期发送。
(1)非周期发送需要授权载波如PCell或其他非授权载波来通知UE该SCell是否发送UCDS和/或发送UCDS的配置信息。
(2)触发SCell发送UCDS的触发信号可以通过小区之间有线或无线方式发送。
(3)触发发送UCDS时，由于UCDS可能组成信号的作用不同，可以只触发发送一种信号、多种信号，或者上述UCDS可能组成信号的全部信号，或者上述信号的修改形式。
(4)通知UE该SCell是否发送UCDS和/或发送UCDS的配置的信息可以通过RRC信令、MAC信令或物理层信令(例如：DCI)进行发送。
(5)触发SCell发送UCDS时，同时通知邻小区有关该SCell发送UCDS的信息，降低对邻小区和本小区的测量影响。
(6)触发SCell发送UCDS的触发信号、和/或通知UE有关SCell是否发送UCDS的信令的时频资源位置可以预先配置或动态选择。预先配置可以有设定的周期、子帧、符号、资源元素等信息，SCell和/或UE只需要在这些预先配置点上检测触发信号和/或信令即可。动态选择需要SCell和/或UE进行盲检。
方式三、混合方式发送，也即周期性发送和触发发送相结合。例如：可以通过SCS进行稀疏的UCDS周期性发送，PCell在SCell竞争到非授权载波使用权后，根据需要触发SCell在该非授权载波上发送UCDS。
混合方式发送同样需要确定或通知上述两种发送方式的信息，例如：包括UCDS的发送图样、测量图样、UCDS是否发送等信息通知给UE和/或SCell。
根据上述发送方式，SCell可以发送UCDS的所有组成信号，也可以只发送UCDS中的一种或几种组成信号，其原因在于：不同需求对UCDS组成信号的要求不一致，例如：同步需求和RRM测量需求依赖的UCDS信号不一样。SCell发送UCDS的图样(包括以下至少之一：周期、持续时间、偏移)也可以进行必要地调整。
因此，UCDS各组成信号可以独立配置，当然也可以组合配置。
如果是独立配置，UCDS各组成信号可以独立配置周期、偏置、持续时间、子帧位置、时频图样。各组成信号之间也可以存在约束关系。
在优选实施过程中，各信号的周期之间可以存在关系限定，例如：不同信号的配置周期之间具有倍数关系。例如：UCDS可以包括PSS、SSS、CRS、CSI-RS，各信号可独立配置。CRS周期是PSS和/或SSS周期倍数；或者，PSS和/或SSS周期是CRS周期倍数；或者，CSI-RS周期是CRS周期倍数；或者，CRS周期是CSI-RS周期倍数；或者，CSI-RS周期是PSS和/或SSS周期倍数；或者，PSS和/或SSS周期是CSI-RS周期倍数。
在优选实施过程中，各信号的子帧位置可以存在关系限定，例如：约束CRS位于发送PSS和/或SSS的子帧；或者，CRS位于发送CSI-RS的子帧；或者，CSI-RS位于发送PSS和/或SSS的子帧。
如果是组合配置，UCDS可以配置一个统一的周期、偏置、持续时间、突发数目等。在上述统一的配置下，UCDS各组成信号可以有不同的子帧位置和/或时频配置，例如：子帧、符号、资源元素。UCDS(例如：包含PSS、SSS和CRS、CSI-RS，其他信号可配或不配)的周期可以配置为40ms、80ms、160ms；持续时间可配置为1个子帧到5个子帧；而在每个周期的每个duration内，UCDS各组成信号可以有不同的配置或子帧信息，例如：PSS和/或SSS只发送一次，CRS可以发送多次，CSI-RS与PSS和/或SSS存在子帧或符号偏移关系，以及各个组成信号的子帧或符号信息。
在下文中，UCDS子帧可以定义为发送UCDS的子帧或UE假设UCDS存在的子帧。UCDS子帧可以为1个、2个或多个子帧。根据上述UCDS发送方式，UCDS子帧可以是周期性的，也可以是非周期性的，抑或是两者兼有。
下面将结合以下几个UCDS发送的优选实施方式对上述优选实施过程作进一步的描述。
需要说明的是，下面几个优选实施例重点说明几种组成信号联合发送的情况。实际上，各个实施例中UCDS每个组成信号的发送方式同样适用于每个组成信号单独作为UCDS发送的情况，或其中两种、三种及多种信号组合作为UCDS发送的情况。以优选实施例一为例，UCDS可以包含PSS、SSS和CRS，在优选实施例一中设计的CRS时频域图样，同样适用于UCDS只包含CRS的场景。
同时，本发明实施例所提供的方法不仅仅局限于如下优选实施例。以优选实施例一中的方法一为例，UCDS可以包含PSS、SSS和CRS，在SSS和PSS符号之前有1个符号发送CRS。实际上，也可以在SSS和PSS符号之前有2个符号或多个相邻/相近符号发送CRS；或者，在SSS和PSS符号之后有1个符号发送CRS(即优选实施例一中方法二)；或者，在SSS和PSS符号之后有2个或多个相邻/相近符号发送CRS；或者，在SSS和PSS符号前后有相等或不等数量的符号发送CRS(即优选实施例一中的方法三)。
优选实施例一
在该优选实施例中，UCDS可以包含PSS、SSS和CRS。PSS和SSS在相邻符号上发送，而CSI-RS没有配置发送。该优选实施例可以包括以下方法：
方法一、
SSS、PSS在UCDS子帧中第1个子帧或偏移后的某个子帧符号5、符号6发送。CRS在UCDS子帧符号4发送。即发送UCDS的符号为符号4、符号5和符号6。
CRS可以在所有下行子帧中或UCDS子帧中发送或多次发送。SSS、PSS在UCDS一个duration里可以只发送一次。例如：UCDS周期内UCDS持续时间为2个子帧、或一次触发发送UCDS为2个子帧，发送UCDS的符号为：第一个子帧中符号4、符号5、符号6和第二个子帧中符号4；或者，PSS/SSS偏移一个子帧，即第一个子帧中符号4和第二个子帧中符号4、符号5和符号6。
图2是根据本发明优选实施例一的方法一中UCDS各信号在时域的位置示意图。如图2所示，其表明了UCDS在时域的发送情况。
图3是根据本发明优选实施例一的方法一中CRS的资源元素位置示意图。如图3所示，其表明了CRS在子帧中的时频域位置。频域位置可以存在偏移，例如：图3发送CRS的资源元素RE(k,l)为(3,4)、(9,4)，其中，k为资源元素的频域序号，l为资源元素的时域序号，如果按照子帧的符号排序，l的取值为0到13；当然也可以在频域上存在3个RE偏移，即(0,4)、(6,4)；此外，还可以在频域上存在1个、2个等RE偏移。
方法二、
SSS、PSS可以在UCDS子帧中第1个子帧或偏移后的某个子帧符号5、符号6进行发送。CRS在UCDS子帧符号7进行发送(或称为第二个时隙的符号0，下同)。即发送UCDS的符号为符号5、符号6、符号7。
CRS可以在所有下行子帧中或UCDS子帧中发送或多次发送。SSS、PSS可以在UCDS一个duration里可以只发送一次。例如：UCDS周期内UCDS持续时间为2个子帧或一次触发发送UCDS为2个子帧，发送UCDS的符号为：第一个子帧中符号5、符号6、符号7和第二个子帧中符号7；或者，PSS/SSS偏移一个子帧，即第一个子帧中符号7和第二个子帧中符号5、符号6、符号7。
图4是根据本发明优选实施例一的方法二中UCDS各信号在时域的位置示意图。如图4所示，其表明了UCDS在时域的发送情况。
图5是根据本发明优选实施例一的方法二中CRS的资源元素位置示意图。如图5所示，其表明了CRS在子帧中的时频域位置。频域位置可以存在偏移。例如：图5发送CRS的资源元素RE(k,l)为(0,7)、(6,7)；当然也可以在频域上存在3个RE偏移，即(3,7)、(9,7)；此外，还可以在频域上存在1个、2个等RE偏移。
方法三、
SSS、PSS可以在UCDS子帧中第1个子帧或偏移后的某个子帧符号5、符号6进行发送。CRS在UCDS子帧符号4和符号7发送。即发送UCDS的符号为符号4、符号5、符号6以及符号7。
CRS可以在所有下行子帧中或UCDS子帧中发送或多次发送。SSS、PSS可以在 UCDS一个duration里只发送一次。例如：UCDS周期内UCDS持续时间为2个子帧、或一次触发发送UCDS为2个子帧，发送UCDS的符号为：第一个子帧中符号4、符号5、符号6、符号7和第二个子帧中符号4、符号7；或者，PSS/SSS偏移一个子帧，即第一个子帧中符号4、符号7和第二个子帧中符号4、符号5、符号6、符号7。
图6是根据本发明优选实施例一的方法三中UCDS各信号在时域的位置示意图。如图6所示，其表明了UCDS在时域的发送情况。
图7是根据本发明优选实施例一的方法三中CRS的资源元素位置示意图。如图7所示，其表明了CRS在子帧中的时频域位置。频域位置可以存在偏移，例如：图7发送CRS的资源元素RE(k,l)为(3,4)、(9,4)、(0,7)、(6,7)；当然也可以在频域上存在3个RE偏移，即(0,4)、(6,4)、(3,7)、(9,7)；此外，还可以在频域上存在1个、2个等RE偏移。
需要说明的是，在上述三种方法中的CRS可以是单端口发送，也可以是两端口或多端口发送。单端口发送的RE格式如图3、图5和图7所示。图8是根据本发明优选实施例的CRS天线端口1的资源元素位置的示意图。如图8所示，其表明了端口1的RE格式，其中，双端口中端口0与单端口的RE格式相同。此处，需要特别注意的是，如果单端口或端口0如上所述存在频域上的RE偏移，则端口1也在图8的基础上存在相同数量的RE偏移。
优选实施例二
在该优选实施例中，UCDS可以包含PSS、SSS和CRS。PSS和SSS在不相邻符号进行发送。CSI-RS没有配置发送。该优选实施例可以包括以下方法：
方法一、
SSS在第1个子帧的符号13发送、PSS在第2个子帧的符号2发送。CRS在第2个子帧的符号0发送。即发送UCDS的符号为第1个子帧的符号13、第2个子帧的符号0、符号2。
图9是根据本发明优选实施例二的方法一中UCDS各信号在时域的位置示意图。如图9所示，其表明了UCDS在时域的发送情况。
图10是根据本发明优选实施例二的方法一中CRS的资源元素位置示意图。如图10所示，其表明了CRS在子帧中的时频域位置。频域位置可以存在偏移。例如：图10发送CRS的资源元素RE(k,l)为(0,0)、(6,0)；当然也可以在频域上存在3个RE偏移，即(3,0)、(9,0)；此外，还可以在频域上存在1个、2个等RE偏移。
方法二、
SSS可以在第1个子帧的符号13发送、PSS在第2个子帧的符号2发送。CRS在第2个子帧的符号0、符号1发送。即发送UCDS的符号为第1个子帧的符号13、第2个子帧的符号0、符号1、符号2。
图11是根据本发明优选实施例二的方法二中UCDS各信号在时域的位置示意图。如图11所示，其表明了UCDS在时域的发送情况。
图12是根据本发明优选实施例二的方法二中CRS的资源元素位置示意图。如图12所示，其表明了CRS在子帧中的时频域位置。频域位置可以存在偏移。例如：图12发送CRS的资源元素RE(k,l)为(0,0)、(6,0)、(3,1)、(9,1)；当然也可以在频域上存在3个RE偏移，即(3,0)、(9,0)、(0,1)、(6,1)；此外，还可以在频域上存在1个、2个等RE偏移。
需要说明的是，在上述两种方法中的CRS可以是单端口发送，也可以是两端口或多端口发送。单端口发送的RE格式如图10和图12所示。双端口中端口0与单端口的RE格式相同、端口1的RE格式可以在单端口的基础上在频域偏移3个RE。此处，需要特别注意的是，如果单端口或端口0如上所述存在频域上的RE偏移，则端口1也存在相同数量的RE偏移。
优选实施例三
在该优选实施例中，UCDS可以包含PSS、SSS、CRS、CSI-RS。PSS和SSS在相邻符号发送。
PSS、SSS、CRS的发送方式和时域/频域图样可以与上述优选实施例一中介绍的各种方法或同类方法一致。CSI-RS可以按照3GPP标准36.211中规定的方法进行发送。即UCDS可以包括：PSS、SSS、CRS、CSI-RS。
或者，为了使得UCDS中CSI-RS的符号与PSS、SSS、CRS的符号相邻或相近，同时确保UCDS内部各符号之间不发生碰撞，可以具有如下约束：
基站在发送PSS、SSS、CRS的时域位置不发送CSI-RS，或者，UE假设存在UCDS中PSS、SSS、CRS的时域位置不会存在CSI-RS信号。
例如：上述优选实施例一中SSS、PSS在子帧符号5、符号6发送。如果配置CSI-RS在同子帧的符号5、符号6发送，则会发生碰撞，所以基站在该子帧可以不发送CSI-RS；
或者，如果现有CSI-RS的配置导致发送CSI-RS的符号与PSS、SSS、CRS符号重叠，则可以通过更改CSI-RS的频域位置，以避开PSS、SSS、CRS的频域位置。
例如：上述优选实施例一中SSS、PSS在子帧符号5、符号6发送。如果配置CSI-RS在同子帧的符号5、符号6发送，则会发生碰撞，此时，可以在SSS和PSS占用的6个RB不发送CSI-RS，在符号5、6的其他频域资源发送CSI-RS。
或者，设置CSI-RS与PSS、或SSS、或CRS之间的子帧偏置，确保不会在同子帧同符号发送不同信号。
例如：设置CSI-RS与SSS之间的偏置值为n个子帧，需要将偏置值通知给UE。
或者，对现有3GPP 36.211Table 6.10.5.2-1中的CSI-RS配置进行限制，保留现有配置中使得CSI-RS的符号位置与UCDS中其他组成信号所占用符号相邻或相近的配置格式。
例如：采用Table 6.10.5.2-1中CSI-RS配置1，结合上述优选实施例一中的各种方法或同类方法。图13是根据本发明优选实施例三的一种UCDS各信号在时域的位置示意图。如图13所示，符号8可以发送CRS或不发送UCDS信号。
或者，修改现有的CSI-RS时域配置，使得CSI-RS的符号位置与UCDS中其他组成信号所占用符号相邻或相近。
例如：可以修改CSI-RS配置可以在时隙1的符号0、符号1(子帧的符号7、符号8)上发送。图14是根据本发明优选实施例三的另一种UCDS各信号在时域的位置示意图。如图14所示，UCDS占用符号4、符号5、符号6、符号7、符号8；当然也可以在图12的基础上，CSI-RS更改配置，在符号8、符号9上发送，即UCDS占用符号5、符号6、符号7、符号8、符号9。
优选实施例四
在该优选实施例中，UCDS可以包含PSS、SSS、CRS、CSI-RS。PSS和SSS在不相邻符号发送。
PSS、SSS、CRS的发送方式和时域/频域图样可以与上述优选实施例二中介绍的各种方法或同类方法一致。CSI-RS可以按照3GPP标准36.211中规定的方法进行发送。即UCDS可以包括：PSS、SSS、CRS、CSI-RS。
或者，为了使得UCDS中CSI-RS的符号与PSS、SSS、CRS的符号相邻或相近，同时确保UCDS内部各符号之间不发生碰撞，可以具有如下约束：
基站在发送PSS、SSS、CRS的时域位置不发送CSI-RS，或者，UE假设存在UCDS中PSS、SSS、CRS的时域位置不会存在CSI-RS信号。
例如：上述优选实施例二中SSS、PSS在符号13(前1子帧)、符号2(后1子帧)发送。如果配置CSI-RS在这两子帧的对应符号上或其中一个符号发送，则会发生碰撞，所以基站在这类子帧可以不发送CSI-RS。
或者，如果现有CSI-RS的配置导致发送CSI-RS的符号与PSS、SSS、CRS符号重叠，则通过更改CSI-RS的频域位置，以避开PSS、SSS、CRS的频域位置。
例如：在上述优选实施例二中SSS、PSS在符号13(前1子帧)、符号2(后1子帧)发送。如果配置CSI-RS在这两子帧的对应符号上发送，则会发生碰撞，此时可以在SSS和PSS占用的6个RB不发送CSI-RS，在其他频域资源发送CSI-RS。
或者，设置CSI-RS与PSS、或SSS、或CRS之间的子帧偏置，确保不会在同子帧同符号发送不同信号。
例如：设置CSI-RS与SSS之间的偏置值为n个子帧，需要将偏置值通知给UE。
或者，对现有3GPP 36.211Table 6.10.5.2-1中的CSI-RS配置进行限制，保留现有配置中使得CSI-RS的符号位置与UCDS中其他组成信号所占用符号相邻或相近的配置格式。
或者，修改现有的CSI-RS时域配置，使得CSI-RS的符号位置与UCDS中其他组成信号所占用符号相邻或相近。
例如：修改3GPP 36.211Table 6.10.5.2-1中的CSI-RS配置20到配置31(现有技术适用于时隙1)，同样适用于时隙0(即ns mod 2＝0)的情况，CSI-RS可以在时隙0的符号1和符号3上发送。图15是根据本发明优选实施例四的UCDS各信号在时域的位置示意图。如图15所示，UCDS占用符号13、0、1、2、3，其中，符号13为前1子帧发送SSS的符号，其他符号位于后一子帧。同样可以存在其他类似方法，在此不一一列举。
优选实施例五
在该优选实施例中，图16是根据本发明优选实施例五的UCDS各信号在时域的位置示意图。如图16所示，UCDS可以包含PSS、SSS、CRS、PRS。PSS和SSS在不相邻符号发送。CRS和PRS占用的时域资源可以保持不变。即CRS占用子帧中符号0、4、7、11。PRS占用子帧中符号3、5、6、8、9、10、12、13。SSS占用符号1。 PSS占用符号2。
优选实施例六
在该优选实施例中，主要针对上述通过LBT/CCA进行周期性机会发送UCDS的方式。
首先，UCDS可以按照周期性机会发送，即UCDS可以按照预设固定的周期、偏移、持续时间、突发数目进行发送。预设的发送参数可以包括上述多个参数中的一个或多个。但是，需要满足LBT/CCA成功的条件才能够进行发送。
如果竞争到非授权载波，则可以在预设的发送时间点(预设的时间点是指由上述周期、偏移等参数确定的从某时刻开始的一段时间)上正常发送UCDS；如果没有竞争到非授权载波，则在该时间点停发一次UCDS。而可以在下个时间点之前、本时间点之后的一段时间内，如果竞争到非授权载波，则可以继续发送，但不要求一定在预设的时间点上发送UCDS，换言之，其可以延迟发送，这种发送方式实际上是一种不规则的周期发送。
类似的，所述一段时间不一定限制在预设的时间点之后，也可以设定在预设的时间点之前或者包含预设的时间点。同时，与上述预设的时间点可以在时域上连续，当然也可以在时域上不连续。
为增加UCDS发送成功率，确保测量和同步的性能，可以采用如下几种方式：
方式一、缩短UCDS的发送周期。例如：授权载波现有发现信号的周期可以为40ms、80ms、160ms，可以设定UCDS的发送周期为10ms、20ms或者40ms。例如：UCDS如果发送周期为10ms，那么在一段时间内(例如：160ms之内)，成功发送一次UCDS的概率便会大大增加。
方式二、为增加UCDS发送成功率且不能使UE检测太复杂，则可以设计UCDS发送窗来增加UCDS发送机会。UCDS发送窗可以位于UCDS预设的时间点之后、或之前，UCDS发送窗也可以包含预设的时间点这段时间。同时，UCDS发送窗与预设的时间点可以在时域上连续，也可以在时域上不连续。优选地，上述UCDS发送窗是在预设的时间点起始位置之后连续的一段可发送UCDS的时间，即UCDS发送窗时长包含预设的时间点这段时间。
UCDS发送窗可以是周期性的，即每个UCDS周期中都存在一个UCDS发送窗。如果UCDS在预设的时间点上没有竞争到资源，在下个预设时间点之前，可以在本时间点之后的UCDS发送窗内继续尝试发送。如果发送成功，则下次发送机会需要等到 预设的下个时间点上。如果在所述UCDS发送窗内都没有竞争到资源，即在UCDS发送窗内发送UCDS失败，则下次发送机会需要等到预设的下个时间点上。
方式三、为增加UCDS发送成功率，且不能使UE检测太复杂，可以考虑采用双周期设置，在预设的长周期之外，设置短周期来尝试补充发送UCDS。如果在预设的长周期的周期点上发送失败，则可在后续的短周期的周期点上继续尝试发送UCDS。如果在预设的长周期的周期点上发送成功，则下次发送机会需要等到下个预设的长周期的周期点上，即不需要执行后续的短周期的周期点上尝试发送。
针对上述三种发送方式，具体举例如下：
假设UCDS的发送周期为80ms，偏移为0ms，持续时间为1ms，突发数目为1(即一个周期里面只发一次UCDS)。预设的发送参数可以包括上述多个参数中的一个或多个，那么UCDS可能发送时间点为子帧0、子帧80、子帧160等。
在这些周期点上能否发送UCDS取决于LBT/CCA的结果。例如：如果UCDS竞争到子帧0的非授权载波使用权，则发送UCDS成功。但是在子帧80没有竞争到非授权载波，那么基站在子帧80就无法成功发送UCDS，只能继续等待下个机会竞争子帧160资源来发送UCDS。
针对上述方式一，可以设计更短的UCDS发送周期，例如：UCDS发送周期为40ms。
针对上述方式二，可以设计UCDS发送窗为20ms，也即UCDS可能发送时间点在(0ms-20ms)、(80ms-100ms)、(160ms-180ms)等之间。UCDS可以在预设的时间点和时间窗内尝试发送。如果UCDS竞争到子帧0的资源使用权，则发送UCDS成功，UCDS下次发送机会为子帧80。如果UCDS没有竞争到子帧80来发送UCDS，则在(80ms-100ms)内继续执行LBT/CCA，尝试发送UCDS。
针对上述方式三，可以设计补充发送UCDS的短周期为10ms。如果UCDS竞争到子帧0的资源使用权，则发送UCDS成功，UCDS下次发送机会为子帧80。如果UCDS没有竞争到子帧80来发送UCDS，可以竞争子帧90、100、等子帧来发送UCDS，例如：如果竞争到子帧90的使用权，发送UCDS成功，则UCDS下次发送机会为子帧160。
UCDS发送可以按照帧对齐、子帧对齐或符号对齐发送UCDS。
如果按照帧对齐发送UCDS。例如：针对上述方式二发送窗内发送UCDS，基站如果在子帧80这个时间点上没有竞争到资源，不需要等到下个预设时间点子帧160，可以继续竞争(80ms-100ms)UCDS发送窗内子帧90的使用权。如果竞争到，则可以在子帧90发送UCDS。帧对齐的优点在于无需改变UCDS内部各组成符号现有发送时 域位置，例如：现有PSS/SSS一般要求在子帧0和子帧5上发送FDD。帧对齐可以不改变它们发送的子帧位置；然而，其缺点在于UCDS发送可尝试机会少，发送概率高。
如果按照子帧对齐发送UCDS。例如：针对上述方式二发送窗内发送UCDS，基站如果在子帧80这个时间点上没有竞争到资源，可以继续竞争子帧81、82、...、99来尝试发送UCDS。这种发送方式涉及到组成信号发送的子帧位置，但是子帧内的符号位置可以不做变动。这种方式的UCDS发送机会要高于上述按照帧对齐发送UCDS方式。
如果按照符号对齐发送UCDS。例如：针对上述方式二发送窗内发送UCDS，特别是针对LBE或类似方式，基站可以随时进行CCA。如果在子帧80初始时刻没有竞争到资源，可以在下一时刻继续执行CCA来竞争资源，如果竞争到资源，则按照符号对齐来发送UCDS。这种方式最为灵活，UCDS发送机会要高于前两种发送方式，但是UCDS内部各组成信号的现有符号时域位置需要改变。
LBT/CCA成功后的时间点与UCDS发送时间点之间可能存在非整数符号，或者完整符号(一个或多个)，或者完整符号(一个或多个)与非完整符号之和的时间差。这段时间可以发送预留信号来保留非授权载波使用权。预留信号可以为CRS、CSI-RS、PSS/SSS、PRS、PDSCH、PDCCH、SRS、PUCCH、UCDS等信号/信道的符号或符号的修改形式，例如：SIB或DCI/UCI信息等，其可以承载PLMN ID、载波信息(载波号、载波频率、载波使用状况)、LBT参数(例如：是否执行LBT、帧结构等)、该预留信号长度等信息。
UCDS的发送存在预设的时间点(可以通过预设的周期、偏移、持续时间、突发数目、UCDS发送窗、补充发送短周期等参数中的一个或多个加以确定)，但是由于非授权载波的特殊性导致LBT/CCA成功的位置不确定，导致LBT/CCA成功的位置和可以占用的时长与UCDS发送位置、及持续时间等有交叉、包含等关系，可以按照如下方式进行发送：
方式一、当LBT/CCA成功后，如果基站可以发送的起始点(即LBT/CCA成功位置)晚于UCDS预设的时间点，可以只发送部分UCDS符号(即按照定时关系对UCDS进行截断发送)；也可以不立即发送UCDS，而是按照上述的符号对齐(或子帧对齐、或帧对齐)发送完整的UCDS，LBT/CCA成功位置与UCDS发送位置之间的空白可以发送上述预留信号或UCDS部分符号。
方式二、当LBT/CCA成功后，如果基站可以发送的起始点早于UCDS预设的时间点，其间的空白可以发送上述预留信号或UCDS部分符号。
方式三、当LBT/CCA成功后，如果基站可以发送的时长大于单个UCDS burst时 长，在发送一个UCDS burst结束后，可以重复发送UCDS、或UCDS的部分符号、或测量信号、或控制信息，以此来满足UCDS单次测量的性能。
图17是根据本发明实施例的发现信号的处理装置的结构框图。如图17所示，该发现信号的处理装置可以包括：处理模块10，设置为对发现信号各组成信号执行以下操作至少之一：确定各组成信号的配置方式；对各组成信号进行图样修改；确定各组成信号或经过图样修改后的各组成信号的发送方式。
优选地，处理模块10，设置为根据发现信号各组成信号的现有时频资源位置，选取和保留各组成信号中时域彼此相邻或相近的符号组成UCDS进行发送；或者，对各组成信号的时频资源位置进行修改，以使各组成信号在时域的位置相邻或相近，并采用修改后的符号组成UCDS进行发送。
采用如图17所示的装置，解决了相关技术中的发现信号应用于非授权载波存在诸多问题，需要对发现信号进行重新设计的问题，进而减少占用时长，且避免对其他设备造成多次干扰。
优选地，上述UCDS可以包括但不限于以下至少之一：
(1)主同步信号(PSS)；
(2)辅同步信号(SSS)；
(3)小区专有参考信号(CRS)；
(4)信道状态信息-参考信号(CSI-RS)；
(5)位置参考信号(PRS)；
其中，PSS、SSS、CRS和PRS用于小区发现和/或同步，CRS和CSI-RS用于RRM测量和/或CSI测量。
需要说明的是，UCDS组成信号不但可以包括上述信号至少之一，而且可以包括上述信号的修改形式。
优选地，上述发送方式可以包括但不限于以下之一：
方式一、周期性发送，UCDS可以按照预设固定的周期、偏移、持续时间进行发送。
上述方式一又可以分为以下三种方式：
(1)通过SCS在每个周期点都发送UCDS，无论该周期点是否已经被占用；
(2)如果竞争到非授权载波，则可以在该周期点上正常发送UCDS；如果没有竞争到非授权载波，则该周期点停发一次UCDS，而等待下一个周期点，如果下个周期点还没有竞争到资源，则继续停发。
(3)如果竞争到非授权载波，则可以在该周期点上正常发送UCDS；如果没有竞争到非授权载波，则该周期点停发一次UCDS，而在下次竞争到非授权载波后，补充发送，但不要求一定在周期点上，也即延迟发送，其实际上是一种不规则的周期发送。
周期性发送需要通过授权载波(例如：PCell)或其他非授权载波来确定、或通知SCell和/或UEs有关SCells发送UCDS的图样(包括以下至少之一：周期、偏移、持续时间、端口、功率)，UE可以根据确定的UCDS的发送图样或测量图样(包括以下至少之一：周期、偏移、持续时间、端口、功率)来检测UCDS。
方式二、非周期触发式发送，可以通过例如PCell来触发UCDS的非周期发送。
(1)非周期发送需要授权载波如PCell或其他非授权载波来通知UE该SCell是否发送UCDS和/或发送UCDS的配置信息。
(2)触发SCell发送UCDS的触发信号可以通过小区之间有线或无线方式发送。
(3)触发发送UCDS时，由于UCDS可能组成信号的作用不同，可以只触发发送一种信号、多种信号，或者上述UCDS可能组成信号的全部信号，或者上述信号的修改形式。
(4)通知UE该SCell是否发送UCDS和/或发送UCDS的配置的信息可以通过RRC信令、MAC信令或物理层信令(例如：DCI)进行发送。
(5)触发SCell发送UCDS的触发信号、和/或通知UE有关SCell是否发送UCDS的信令的时频资源位置可以预先配置或动态选择。预先配置可以有设定的周期、子帧、符号、资源元素等信息，SCell和/或UE只需要在这些预先配置点上检测触发信号和/或信令即可。动态选择需要SCell和/或UE进行盲检。
方式三、混合方式发送，也即周期性发送和触发发送相结合。例如：可以通过SCS进行稀疏的UCDS周期性发送，PCell在SCell竞争到非授权载波使用权后，根据需要触发SCell在该非授权载波上发送UCDS。
混合方式发送同样需要确定或通知上述两种发送方式的信息，例如：包括UCDS的发送图样、测量图样、UCDS是否发送等信息通知给UE和/或SCell。
根据上述发送方式，SCell可以发送UCDS的所有组成信号，也可以只发送UCDS 中的一种或几种组成信号，其原因在于：不同需求对UCDS组成信号的要求不一致，例如：同步需求和RRM测量需求依赖的UCDS信号不一样。SCell发送UCDS的图样(包括以下至少之一：周期、持续时间、偏移)也可以进行必要地调整。
因此，UCDS各组成信号可以独立配置，当然也可以组合配置。
如果是独立配置，UCDS各组成信号可以独立配置周期、偏置、持续时间、子帧位置、时频图样。各组成信号之间也可以存在约束关系。
在优选实施过程中，各信号的周期之间可以存在关系限定，例如：不同信号的配置周期之间具有倍数关系。例如：UCDS可以包括PSS、SSS、CRS、CSI-RS，各信号可独立配置。CRS周期是PSS和/或SSS周期倍数；或者，PSS和/或SSS周期是CRS周期倍数；或者，CSI-RS周期是CRS周期倍数；或者，CRS周期是CSI-RS周期倍数；或者，CSI-RS周期是PSS和/或SSS周期倍数；或者，PSS和/或SSS周期是CSI-RS周期倍数。
在优选实施过程中，各信号的子帧位置可以存在关系限定，例如：约束CRS位于发送PSS和/或SSS的子帧；或者，CRS位于发送CSI-RS的子帧；或者，CSI-RS位于发送PSS和/或SSS的子帧。
如果是组合配置，UCDS可以配置一个统一的周期、偏置、持续时间、时频图样等。在上述统一的配置下，UCDS各组成信号可以有不同的子帧位置和/或时频配置，例如：子帧、符号、资源元素。UCDS(例如：包含PSS、SSS和CRS、CSI-RS，其他信号可配或不配)的周期可以配置为40ms、80ms、160ms；持续时间可配置为1个子帧到5个子帧；而在每个周期的每个duration内，UCDS各组成信号可以有不同的配置或子帧信息，例如：PSS和/或SSS只发送一次，CRS可以发送多次，CSI-RS与PSS和/或SSS存在子帧或符号偏移关系，以及各个组成信号的子帧或符号信息。
在下文中，UCDS子帧可以定义为发送UCDS的子帧或UE假设UCDS存在的子帧。UCDS子帧可以为1个、2个或多个子帧。根据上述UCDS发送方式，UCDS子帧可以是周期性的，也可以是触发发送UCDS的子帧，抑或是两者兼有。
从以上的描述中，可以看出，上述实施例实现了如下技术效果(需要说明的是这些效果是某些优选实施例可以达到的效果)：采用本发明实施例所提供的技术方案，解决了相关技术中的发现信号应用于非授权载波存在诸多问题，需要对发现信号进行重新设计的问题，进而减少占用时长，且避免对其他设备造成多次干扰。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以 将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，本发明实施例提供的一种发现信号的处理方法及装置具有以下有益效果：避免对发现信号进行重新设计，减少占用时长，且避免对其他设备造成多次干扰。

Claims (46)

  1. 一种发现信号的处理方法，包括：
    对发现信号各组成信号执行以下操作至少之一：
    确定所述各组成信号的配置方式；
    对所述各组成信号进行图样修改；
    确定所述各组成信号或经过图样修改后的各组成信号的发送方式。
  2. 根据权利要求1所述的方法，其中，对所述各组成信号进行图样修改包括：
    根据所述各组成信号的现有时频资源位置，选取和保留所述各组成信号中时域彼此相邻或相近的符号组成非授权载波中的发现信号UCDS进行发送；
    或者，
    对所述各组成信号的时频资源位置进行修改，以使所述各组成信号在时域的位置相邻或相近，并采用修改后的符号组成所述UCDS进行发送。
  3. 根据权利要求2所述的方法，其中，对所述各组成信号的时频资源位置进行修改包括：对所述各组成信号的时域位置进行修改。
  4. 根据权利要求2所述的方法，其中，所述UCDS包括以下至少之一：
    主同步信号PSS；
    辅同步信号SSS；
    小区专有参考信号CRS；
    信道状态信息-参考信号CSI-RS；
    位置参考信号PRS；
    其中，PSS、SSS、CRS和PRS用于小区发现和/或同步，CRS和CSI-RS用于无线资源管理RRM测量和/或CSI测量。
  5. 根据权利要求4所述的方法，其中，所述UCDS包括PSS、SSS、CRS、PRS、CRS以及CSI-RS中单个信号的修改形式或者至少两个信号的修改形式的组合。
  6. 根据权利要求1所述的方法，其中，所述发送方式包括以下之一：
    周期性发送；
    非周期触发式发送；
    所述周期性发送与所述非周期触发式发送相结合的混合方式发送。
  7. 根据权利要求2所述的方法，其中，所述发送方式还包括：
    在所述各组成信号的传统发现信号发送模式与所述经过图样修改后的各组成信号的UCDS发送模式之间进行切换。
  8. 根据权利要求6所述的方法，其中，所述周期性发送包括以下之一：
    通过短控制信令SCS在每个周期点均发送UCDS；
    在竞争到所述非授权载波的情况下，在当前周期点上正常发送所述UCDS；在未竞争到所述非授权载波的情况下，则在所述当前周期点停止发送一次所述UCDS，而等待下个周期点，如果在所述下个周期点还未竞争到所述非授权载波，则继续停止发送一次所述UCDS；
    在竞争到所述非授权载波的情况下，在当前周期点上正常发送所述UCDS；在未竞争到所述非授权载波的情况下，则在所述当前周期点停止发送一次所述UCDS，而在下次竞争到所述非授权载波后，补充发送所述UCDS，其中，补充发送所述UCDS为不规则的周期发送。
  9. 根据权利要求6所述的方法，其中，所述周期性发送包括以下之一：
    通过先听后说LBT或空闲信道评估CCA按照预设发送参数集合发送所述UCDS，其中，所述预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目；
    在竞争到非授权载波的情况下，在当前时间点上发送所述UCDS；在未竞争到所述非授权载波的情况下，则在所述当前周期点停止发送一次所述UCDS，而在下个时间点之前的时间段内，如果重新竞争到非授权载波，则继续发送所述UCDS，其中，继续发送所述UCDS为不规则的周期发送，所述下个时间点位于所述当前时间点之后，所述当前时间点和所述下个时间点均由预设发送参数集合确定，所述预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目。
  10. 根据权利要求2或9所述的方法，其中，所述UCDS的发送策略包括以下之一：
    缩短所述UCDS的发送周期；
    采用发送窗增加所述UCDS的发送机会，其中，所述发送窗的设计方式包括以下之一：所述发送窗位于预设时间点之前、所述发送窗位于所述预设时间点之后、所述发送窗包含所述预设时间点，所述预设时间点由预设发送参数集合确定， 所述预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目；
    采用第一周期和第二周期配合发送所述UCDS，其中，所述第一周期大于所述第二周期，所述第二周期用于在所述第一周期未能成功发送所述UCDS的情况下，在所述第二周期补充发送所述UCDS。
  11. 根据权利要求10所述的方法，其中，在采用所述发送窗增加所述UCDS的发送机会的情况下，所述发送窗由基站确定并由所述基站发送至终端；或者，在采用所述第一周期和所述第二周期配合发送所述UCDS的情况下，所述第一周期和所述第二周期由基站确定并由所述基站发送至终端。
  12. 根据权利要求6所述的方法，其中，所述非周期触发式发送采用授权载波或非授权载波通知用户设备UE与该UE对应的辅小区SCell是否发送所述UCDS和/或发送所述UCDS的配置信息。
  13. 根据权利要求12所述的方法，其中，触发所述SCell发送所述UCDS的触发信号是通过小区之间有线或无线方式发送的。
  14. 根据权利要求12所述的方法，其中，通过无线资源控制RRC信令、媒体接入控制MAC信令或者物理层信令将所述SCell是否发送所述UCDS和/或发送所述UCDS的配置信息通知给所述UE。
  15. 根据权利要求12所述的方法，其中，采用预先配置或动态选择的方式触发所述SCell发送所述UCDS的触发信号和/或通知所述UE有关所述SCell是否发送所述UCDS的信令的时频资源位置。
  16. 根据权利要求1所述的方法，其中，所述配置方式包括以下之一：独立配置方式、组合配置方式。
  17. 根据权利要求16所述的方法，其中，在所述各组成信号采用所述独立配置方式的情况下，所述各组成信号独立配置周期、偏置、持续时间、子帧位置、时频图样、和/或突发数目。
  18. 根据权利要求17所述的方法，其中，所述各组成信号的周期之间存在预设关系限定。
  19. 根据权利要求17所述的方法，其中，所述各组成信号所在的子帧位置之间存在预设关系限定。
  20. 根据权利要求16所述的方法，其中，所述各组成信号配置统一的周期、偏置、持续时间、和/或突发数目，其中，所述各组成信号具有不同的子帧位置和/或时频配 置。
  21. 根据权利要求2至20中任一项所述的方法，其中，UCDS子帧为周期性子帧和/或非周期子帧，其中，所述UCDS子帧为发送所述UCDS的子帧或者UE假设所述UCDS存在的子帧。
  22. 根据权利要求2所述的方法，其中，所述UCDS满足授权载波辅助接入LAA单次无线资源管理RRM测量性能。
  23. 根据权利要求22所述的方法，其中，所述UCDS满足所述LAA单次RRM测量性能的条件包括以下之一：
    在一个UCDS发送周期内发送一个或多个UCDS突发数目bursts，其中，所述多个UCDS bursts在时域上连续发送或非连续重复发送；
    在所述UCDS内的不连续符号上发送测量信号/符号。
  24. 一种发现信号的处理装置，包括：
    处理模块，设置为对发现信号各组成信号执行以下操作至少之一：
    确定所述各组成信号的配置方式；
    对所述各组成信号进行图样修改；
    确定所述各组成信号或经过图样修改后的各组成信号的发送方式。
  25. 根据权利要求24所述的装置，其中，所述处理模块，设置为根据发现信号各组成信号的现有时频资源位置，选取和保留所述各组成信号中时域彼此相邻或相近的符号组成非授权载波中的发现信号UCDS进行发送；或者，对所述各组成信号的时频资源位置进行修改，以使所述各组成信号在时域的位置相邻或相近，并采用修改后的符号组成所述UCDS进行发送。
  26. 根据权利要求25所述的装置，其中，所述处理模块，设置为对所述各组成信号的时域位置进行修改。
  27. 根据权利要求25所述的装置，其中，所述UCDS包括以下至少之一：
    主同步信号PSS；
    辅同步信号SSS；
    小区专有参考信号CRS；
    信道状态信息-参考信号CSI-RS；
    位置参考信号PRS；
    其中，PSS、SSS、CRS和PRS用于小区发现和/或同步，CRS和CSI-RS用于无线资源管理RRM测量和/或CSI测量。
  28. 根据权利要求27所述的装置，其中，所述UCDS包括PSS、SSS、CRS、PRS、CRS以及CSI-RS中单个信号的修改形式或者至少两个信号的修改形式的组合。
  29. 根据权利要求24所述的装置，其中，所述发送方式包括以下之一：
    周期性发送；
    非周期触发式发送；
    所述周期性发送与所述非周期触发式发送相结合的混合方式发送。
  30. 根据权利要求25所述的装置，其中，所述发送方式还包括：
    在所述各组成信号的传统发现信号发送模式与所述经过图样修改后的各组成信号的UCDS发送模式之间进行切换。
  31. 根据权利要求29所述的装置，其中，所述周期性发送包括以下之一：
    通过短控制信令SCS在每个周期点均发送UCDS；
    在竞争到所述非授权载波的情况下，在当前周期点上正常发送所述UCDS；在未竞争到所述非授权载波的情况下，则在所述当前周期点停止发送一次所述UCDS，而等待下个周期点，如果在所述下个周期点还未竞争到所述非授权载波，则继续停止发送一次所述UCDS；
    在竞争到所述非授权载波的情况下，在当前周期点上正常发送所述UCDS；在未竞争到所述非授权载波的情况下，则在所述当前周期点停止发送一次所述UCDS，而在下次竞争到所述非授权载波后，补充发送所述UCDS，其中，补充发送所述UCDS为不规则的周期发送。
  32. 根据权利要求29所述的装置，其中，所述非周期触发式发送采用授权载波或非授权载波通知用户设备UE与该UE对应的辅小区SCell是否发送所述UCDS和/或发送所述UCDS的配置信息。
  33. 根据权利要求29所述的装置，其中，所述周期性发送包括以下之一：
    通过先听后说LBT或空闲信道评估CCA按照预设发送参数集合发送所述UCDS，其中，所述预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目；
    在竞争到非授权载波的情况下，在当前时间点上发送所述UCDS；在未竞争到所述非授权载波的情况下，则在所述当前周期点停止发送一次所述UCDS，而在下个时间点之前的时间段内，如果重新竞争到非授权载波，则继续发送所述UCDS，其中，继续发送所述UCDS为不规则的周期发送，所述下个时间点位于所述当前时间点之后，所述当前时间点和所述下个时间点均由预设发送参数集合确定，所述预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目。
  34. 根据权利要求25或33所述的装置，其中，所述UCDS的发送策略包括以下之一：
    缩短所述UCDS的发送周期；
    采用发送窗增加所述UCDS的发送机会，其中，所述发送窗的设计方式包括以下之一：所述发送窗位于预设时间点之前、所述发送窗位于所述预设时间点之后、所述发送窗包含所述预设时间点，所述预设时间点由预设发送参数集合确定，所述预设发送参数集合包括以下至少之一：周期、偏移、持续时间、突发数目；
    采用第一周期和第二周期配合发送所述UCDS，其中，所述第一周期大于所述第二周期，所述第二周期用于在所述第一周期未能成功发送所述UCDS的情况下，在所述第二周期补充发送所述UCDS。
  35. 根据权利要求34所述的装置，其中，在采用所述发送窗增加所述UCDS的发送机会的情况下，所述发送窗由基站确定并由所述基站发送至终端；或者，在采用所述第一周期和所述第二周期配合发送所述UCDS的情况下，所述第一周期和所述第二周期由基站确定并由所述基站发送至终端。
  36. 根据权利要求31所述的装置，其中，触发所述SCell发送所述UCDS的触发信号是通过小区之间有线或无线方式发送的。
  37. 根据权利要求31所述的装置，其中，通过无线资源控制RRC信令、媒体接入控制MAC信令或者物理层信令将所述SCell是否发送所述UCDS和/或发送所述UCDS的配置信息通知给UE。
  38. 根据权利要求32所述的装置，其中，采用预先配置或动态选择的方式触发所述SCell发送所述UCDS的触发信号和/或通知所述UE有关所述SCell是否发送所述UCDS的信令的时频资源位置。
  39. 根据权利要求24所述的装置，其中，所述配置方式包括以下之一：独立配置方式、组合配置方式。
  40. 根据权利要求39所述的装置，其中，在所述各组成信号采用所述独立配置方式的 情况下，所述各组成信号独立配置周期、偏置、持续时间、子帧位置、时频图样。
  41. 根据权利要求40所述的装置，其中，所述各组成信号的周期之间存在预设关系限定。
  42. 根据权利要求40所述的装置，其中，所述各组成信号所在的子帧位置之间存在预设关系限定。
  43. 根据权利要求39所述的装置，其中，所述各组成信号配置统一的周期、偏置、持续时间，其中，所述各组成信号具有不同的子帧位置和/或时频配置。
  44. 根据权利要求25至43中任一项所述的装置，其中，UCDS子帧为周期性子帧和/或非周期子帧，其中，所述UCDS子帧为发送所述UCDS的子帧或者UE假设所述UCDS存在的子帧。
  45. 根据权利要求25所述的装置，其中，所述UCDS满足授权载波辅助接入LAA单次无线资源管理RRM测量性能。
  46. 根据权利要求45所述的装置，其中，所述UCDS满足所述LAA单次RRM测量性能的条件包括以下之一：
    在一个UCDS发送周期内发送至少两个UCDS时机occasions或UCDS突发数目bursts，其中，所述至少两个UCDS occasions或UCDS bursts在时域上连续发送或非连续重复发送；
    在修改后的符号组成的所述UCDS内的不连续符号上发送测量信号/符号。
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CN113949493B (zh) * 2020-07-17 2023-07-25 大唐移动通信设备有限公司 一种信息传输方法、设备、装置及介质

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