An initial signal processing method, device and storage medium

Abstract

The present disclosure relates to an initial signal processing method, device and storage medium, wherein the method comprises: determining one or more physical downlink control channel (PDCCH) candidates that need to be monitored by a UE after detecting an initial signal in an unlicensed spectrum. According to the present disclosure, one or more types of PDCCH that need to be monitored can be determined, and a channel occupancy time (COT) structure can be obtained according to the PDCCH.

Description

[0001] This application is a divisional application of Chinese patent application filed on January 11, 2019, with application number 201910028714.6 and entitled "An Initial Signal Processing Method, Device and Storage Medium". Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to an initial signal processing method, apparatus and storage medium. Background Technology

[0003] On unlicensed spectrum in 5G New Radio (NR), base stations acquire transmission opportunities (TXOPs) through Listen Before Talk (LBT). The base station sends an initial signal to the User Equipment (UE) to inform them that the base station has acquired a TXOP. Upon successfully detecting the initial signal, the UE recognizes the opportunity and begins a series of actions, such as listening to the Physical Downlink Control Channel (PDCCH). The initial signal can also be called a preamble signal or a wake-up signal (WUS). The UE detects the initial signal by default during its active time, and only begins listening to the PDCCH upon detection. This initial signal also serves a power-saving function; therefore, it can also be called a power-saving signal.

[0004] In related technologies, after successfully detecting the initial signal, the UE needs to listen to one or more types of PDCCH to obtain the Channel Occupancy Time (COT) structure. However, how the UE can listen to one or more types of PDCCH to obtain the COT structure after successfully detecting the initial signal is a problem that urgently needs to be solved. Summary of the Invention

[0005] In view of this, this disclosure proposes an initial signal processing method, device and storage medium that can determine one or more types of PDCCHs to be monitored and obtain the COT structure based on the PDCCHs.

[0006] According to a first aspect of this disclosure, an initial signal processing method is provided, the method comprising:

[0007] After the UE detects the initial signal in the unlicensed spectrum, it determines one or more PDCCH candidates that need to be monitored.

[0008] According to a second aspect of this disclosure, an initial signal processing method is provided, the method comprising:

[0009] After detecting the initial signal in the unlicensed spectrum, the UE listens to one or more PDCCH candidates according to the configured listening timing.

[0010] According to a third aspect of this disclosure, an initial signal processing apparatus is provided, the apparatus comprising:

[0011] The monitoring unit is used to determine one or more PDCCH candidates to be monitored after detecting an initial signal in the unlicensed spectrum.

[0012] According to a fourth aspect of this disclosure, an initial signal processing apparatus is provided, the apparatus comprising:

[0013] The candidate listening unit is used to listen to one or more PDCCH candidates according to the configured listening timing after detecting the initial signal in the unlicensed spectrum.

[0014] According to a fifth aspect of this disclosure, a non-volatile computer-readable storage medium is provided, having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the method described in any one of the preceding claims.

[0015] This disclosure enables the UE to determine one or more PDCCH candidates to be monitored after detecting an initial signal in unlicensed spectrum. Using this disclosure, one or more types of PDCCHs to be monitored can be identified, and the COT structure can be obtained based on the PDCCHs.

[0016] Other features and aspects of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this disclosure together with the specification and serve to explain the principles of this disclosure.

[0018] Figure 1 A flowchart illustrating an initial processing method according to an embodiment of the present disclosure is shown;

[0019] Figure 2 A flowchart illustrating an initial processing method according to an embodiment of the present disclosure is shown;

[0020] Figure 3A flowchart illustrating an initial processing method according to an embodiment of the present disclosure is shown;

[0021] Figure 4 A flowchart illustrating an initial processing method according to an embodiment of the present disclosure is shown;

[0022] Figure 5 This diagram shows a structural block diagram of an initial processing apparatus according to an embodiment of the present disclosure;

[0023] Figure 6 This diagram shows a structural block diagram of an initial processing apparatus according to an embodiment of the present disclosure;

[0024] Figure 7 A structural block diagram of an initial processing apparatus according to an embodiment of the present disclosure is shown. Detailed Implementation

[0025] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0026] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0027] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0028] The relevant content of this disclosure regarding 5G technology is described as follows:

[0029] I. Synchronization Signal Block:

[0030] In 5G systems, synchronization signals and broadcast channels are transmitted in the form of synchronization signal blocks, and a beamsweeping function is introduced. The Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), and Physical Broadcast Channel (PBCH) are contained within SS / PBCH blocks. Each synchronization signal block can be viewed as a resource of one beam (analog domain) in the beamsweeping process. Multiple synchronization signal blocks form a synchronization signal burst (SS-burst). An SS-burst can be seen as a relatively concentrated resource containing multiple beams. Multiple synchronization signal bursts form a synchronization signal burst set (SS-burst-set). The PBCH block is repeatedly transmitted on different beams, which is a beamsweeping process. Through beamsweeping training, the UE can perceive which beam receives the strongest signal. For example, the time-domain positions of L synchronization signal blocks are fixed within a 5ms window. The indices of the L synchronization signal blocks are consecutively arranged in the time domain, ranging from 0 to L-1, where L is an integer greater than 1. Therefore, the transmission time of a synchronization signal block within this 5ms window is fixed, and its index is also fixed.

[0031] II. Discovery Reference Signal (DRS) in Licensed Assisted Access (LAA):

[0032] LTE Release 12 defines DRS (Digital Frequency Response) for user equipment (UE) to perform synchronization time-frequency tracking and measurement of secondary cells (SCells), which can be referred to as the "discovery" function of the SCell. The advantage of using DRS is that it is a long-period signal, which causes less interference to the overall network. DRS consists of PSS (Pressure Signal Support), SSS (Secondary Signal Support), and CRS (Cell-Specific Reference Signal). For FDD systems, the DRS duration is 1 to 5 consecutive subframes; for TDD systems, the DRS duration is 2 to 5 consecutive subframes. The transmission timing of DRS is defined by the Discovery Measurement Timing Configuration (DMTC), and the UE assumes that DRS occurs once per DMTC period.

[0033] In LTE's LAA (Local Area of ​​Access), DRS (Discovery Signal) can be used for SCell discovery on unlicensed spectrum due to its long-period characteristic, which reduces interference to LAA systems and other systems sharing unlicensed spectrum (such as Wi-Fi systems). The duration of LAA DRS is 12 Orthogonal Frequency Division Multiplexing (OFDM) symbols within a non-empty subframe, further reducing interference to LAA systems and other systems. LAA DRS also includes PSS / SSS / CRS (Discovery Signals and Recognition Signals).

[0034] There are two scenarios when LAA DRS occurs:

[0035] Scenario 1: The UE may assume that the LAA DRS could occur in any subframe of the DMTC, and the UE may assume that the LAA DRS occurs in the first subframe of the DMTC that contains a PSS, an SSS, and a CRS. In other words, the UE assumes that: if the base station performs LBT within the DMTC and detects that the channel is idle, then the base station will send a DRS in a non-empty subframe.

[0036] Scenario 2: When LAA DRS is transmitted together with PDSCH / PDCCH / EPDCCH, LAA DRS may only appear in subframes 0 and 5. That is, if DMTC contains subframes 0 or 5, and the user equipment needs to detect PDCCH / EPDCCH or receive PDSCH in subframes 0 or 5, then the user equipment assumes that DRS only appears in subframes 0 or 5.

[0037] III. Residual Minimum System Information (RMSI) in 5G:

[0038] In 5G, the RMSI is equivalent to SIB1 in LTE, and it includes the main system information besides the MIB. The RMSI is carried in the PDSCH, which is scheduled by the PDCCH. The PDSCH carrying the RMSI is generally called the RMSI PDSCH, and the PDCCH that schedules the RMSI PDSCH is generally called the RMSI PDCCH.

[0039] Generally, a search space set contains properties such as the monitoring timing of the PDCCH and the search space type. The search space set is usually bound to a control resource set (CORESET), and the CORESET contains properties such as the frequency domain resources and duration of the PDCCH.

[0040] The search space set containing the RMSI PDCCH is generally referred to as the Type0-PDCCH search space set. It is typically configured by the MIB, or by the RRC during handover. The Type0-PDCCH search space set is called search space 0 (or search space set 0), and the bound CORESET is called CORESET 0. Besides the RMSI PDCCH search space set, other common search spaces or sets of common search spaces, such as the OSI PDCCH search space set (Type0A-PDCCH search space set), the RAR PDCCH search space set (Type1-PDCCH search space set), and the paging PDCCH search space set (Type2-PDCCH search space set), can be the same as search space set 0 by default. Generally, the aforementioned common search spaces or sets of common search spaces can be reconfigured.

[0041] IV. LBT of the synchronization signal block:

[0042] On the unlicensed spectrum of NR, a synchronization signal block needs to be defined so that user equipment can detect NR unlicensed spectrum cells during cell search. The synchronization signal block can be included in the DRS, with the DRS acting as a whole containing the synchronization signal block; or the DRS can be not defined, and the synchronization signal block exists independently.

[0043] On unlicensed NR spectrum, base stations need to perform LBT (Local Time Bypass) before transmitting DRS (Diagnosis Related Number) or synchronization signal blocks. DRS or synchronization signal blocks are only transmitted after an idle signal is detected; otherwise, LBT is performed after a certain period. The transmission of DRS or synchronization signal blocks occurs within a specific transmission window, which can be agreed upon by the base station and user equipment, or configured by RRC (Responsive Radio Control) signaling via DMTC (Diagnosis Related Number) or Synchronization Measurement Timing Configuration (SMTC).

[0044] Because LBT is required, the DRS or synchronization block needs to be shifted backward by a certain time. To support the backward shifting feature of the DRS or synchronization block on unlicensed spectrum, the DRS or synchronization block needs to have multiple predefined time-domain positions.

[0045] V. RMSI's LBT:

[0046] On unlicensed NR spectrum, the base station may also need to perform LBT before transmitting RMSI. RMSI is only transmitted after an idle signal is detected; otherwise, the base station performs LBT after a certain period. RMSI transmission is performed within a transmission window, which can be agreed upon by the base station and UE, or configured by MIB or Radio Resource Control (RRC) signaling.

[0047] Because LBT is required, RMSI needs to be shifted backward by a certain time. To support the backward shift feature of RMSI on unlicensed spectrum, RMSI needs to have multiple predefined time-domain positions.

[0048] In summary, for the initial signal, on the unlicensed spectrum of NR, after the base station obtains the TXOP through LBT, it will send an initial signal to inform the UE that the base station has obtained the TXOP. Typically, after successfully detecting the initial signal, the UE needs to listen to one or more types of PDCCH to obtain the COT structure. These one or more types of PDCCH can be configured through a search space set. The COT structure includes the duration for which the base station occupies the channel (e.g., a few milliseconds, or a number of time slots), the format of the time slots within the duration (e.g., uplink, downlink, flexible symbol configuration), and the sub-channels or subbands available within the duration (where subband is the basic unit of LTB, e.g., 20MHz bandwidth), etc.

[0049] Using the following embodiment, in the NR unlicensed spectrum, after the UE successfully detects the initial signal, it can determine one or more types of PDCCH to be monitored, so as to obtain the COT structure based on the PDCCH.

[0050] Figure 1 A schematic flowchart of an initial signal processing method according to an embodiment of this disclosure is shown. Figure 1 As shown, the process includes:

[0051] Step S101: After the UE detects the initial signal in the unlicensed spectrum, it determines one or more PDCCH candidates that need to be monitored.

[0052] In one possible implementation, the types of the one or more PDCCH candidates include: a first type of PDCCH candidate and a scheduled PDCCH candidate.

[0053] In one possible implementation, the method further includes: the UE indicating the COT structure through the first type of PDCCH candidate. The COT structure refers to the structure adopted by the base station after obtaining the channel, including time-domain and frequency-domain structures. The time-domain structure may include frame structure, time slot structure and / or symbol type (including uplink, downlink and flexible, etc.), etc., and the frequency-domain structure may include subband occupation and / or PRB occupation, etc.

[0054] In one example, regarding the PDCCH frequency domain location, the UE, upon successfully detecting the initial signal, determines the first type of PDCCH candidates to be monitored. Further, the UE obtains the first type of downlink control information (DCI) by monitoring the first type of PDCCH candidates, and the UE determines the PDCCH candidates to be monitored based on the first type of DCI. Alternatively, the UE, upon successfully detecting the initial signal, directly determines the PDCCH candidates to be monitored, including the first type of PDCCH candidates.

[0055] Figure 2 A schematic flowchart of an initial signal processing method according to an embodiment of this disclosure is shown. Figure 2 As shown, the process includes:

[0056] Step S201: The UE detects the initial signal in the unlicensed spectrum.

[0057] Step S202: The UE obtains the first type of DCI by listening to the first type of PDCCH candidates, and determines one or more PDCCH candidates to be listened to through the first type of DCI.

[0058] In one possible implementation, besides step S101 described above, which directly determines one or more PDCCH candidates to be monitored based on the initial signal, another implementation involves finding a first type of DCI based on the initial signal, and then determining candidate PDCCHs based on the first type of DCI, such as determining the CORESET, the search space set, or the BWP based on the first type of DCI. Another implementation combines this with step S101, such as finding a first type of DCI based on the initial signal, where the first type of DCI indicates a subband; then determining the subband based on the first type of DCI, and finally determining candidate PDCCHs based on the first type of DCI.

[0059] Specifically, the UE determines the PDCCH candidates to be monitored using the first type of DCI, including: after detecting the initial signal, determining the first type of DCI; after determining the CORESET of all candidates based on the first type of DCI, determining the PDCCH candidates to be monitored. Here, CORESET can define basic time-frequency domain resources.

[0060] Specifically, the UE determines the PDCCH candidates to be monitored using the first type of DCI, including: after detecting the initial signal, determining the first type of DCI; and after determining the search space set of all candidates based on the first type of DCI, determining the PDCCH candidates to be monitored.

[0061] Specifically, the UE determines the PDCCH candidates to be monitored through the first type of DCI, including: after detecting the initial signal, determining the first type of DCI; and after determining the partial bandwidth (BWP) of all candidates based on the first type of DCI, determining the PDCCH candidates to be monitored.

[0062] In one possible implementation, after detecting the initial signal, it is directly determined that the PDCCH candidates to be monitored include: the first type of PDCCH candidates.

[0063] In one possible implementation, the method further includes: after the initial signal is detected in one or more subbands, determining that the frequency domain resources of the PDCCH candidate to be monitored are within the subband.

[0064] In one example, after a UE successfully detects an initial signal within a subband, it determines that the frequency domain resources of the PDCCH to be monitored are within that subband. This method of determining the PDCCH to be monitored based on frequency domain resource relationships is suitable for Group Common-PDCCH (GC-PDCCH). A Group Common-PDCCH represents a PDCCH that a group of UEs needs to monitor, or the DCI content corresponding to that PDCCH is common to a group of UEs because the group of UEs can use common frequency domain resources.

[0065] In one possible implementation, the step of determining that the frequency domain resources of the PDCCH candidate to be monitored are within the sub-band after the initial signal is detected in one or more sub-bands further includes: during the process of determining all candidate PDCCHs after the UE detects the initial signal in the sub-band, if the frequency domain resources of the PDCCH candidate are included in the sub-band, then the UE determines that it needs to monitor the PDCCH candidate.

[0066] In one example, after the UE successfully detects the initial signal in a certain subband, it checks all possible PDCCH candidates. If the frequency domain resources of a certain PDCCH candidate are contained in that subband, then the UE considers that the PDCCH candidate to be detected.

[0067] In one possible implementation, the step of determining that the frequency domain resources of the PDCCH to be monitored are within the sub-band after the initial signal is detected in one or more sub-bands further includes: during the process of determining all candidate CORESETs after the UE detects the initial signal in the sub-band, if the CORESET is included in the sub-band, then the UE determines that it needs to monitor the PDCCH candidate within the CORESET.

[0068] In one example, after successfully detecting the initial signal within a subband, the UE checks all possible cores. If a core is included within that subband, the UE considers the PDCCH within that core to be detectable. "All possible cores" can refer to all cores within the currently active BWP or all cores within all configured BWPs. A core is associated with a searchspace set (which primarily configures when the UE needs to listen to the PDCCH, or the time-domain location of the PDCCH the UE needs to listen to); that is, a given search space set is always associated with a core. Different search space sets can be associated with the same core, or in other words, a core can "contain" or be associated with multiple search space sets. Therefore, a more general description of the above scheme is: after successfully detecting the initial signal within a subband, the UE checks all search space sets. If a core associated with a certain search space set is included within that subband, the UE considers the PDCCH within that search space set to be detectable.

[0069] In one possible implementation, the step of determining that the frequency domain resources of the PDCCH to be monitored are within the sub-band after the initial signal is detected in one or more sub-bands further includes: during the process of determining all candidate search space sets after the UE detects the initial signal in the sub-band, if the CORESET associated with the search space set is included in the sub-band, then the UE determines that it needs to monitor the search space set.

[0070] In one possible implementation, the step of determining that the frequency domain resources of the PDCCH to be monitored are within the sub-band after detecting the initial signal in one or more sub-bands further includes: after the UE detects the initial signal in the sub-band, determining all candidate BWPs. If a BWP is included in the sub-band, the UE determines that the BWP is activated.

[0071] In one possible implementation, the method further includes: after the UE determines that the BWP obtained from the verification is activated, the UE determines that all PDCCHs configured in the search space set within the BWP need to be detected.

[0072] In one example, after the UE successfully detects the initial signal within a subband, it checks all configured BWPs. If a BWP is included in that subband, the UE considers that BWP to be active, and the UE considers all PDCCHs within the configured search space sets of that BWP to need to be detected. Generally, when a BWP is active, all PDCCHs within the configured search space sets of that BWP need to be detected.

[0073] In one possible implementation, after the initial signal is detected in one or more sub-bands, the PRB index of the scheduled PDSCH is determined to be the index of the PRBs arranged in the order of the one or more sub-bands. This possible implementation applies to the case where the initial signal is successfully detected in one sub-band as described in the example above. The implementation also applies when the initial signal is successfully detected in multiple sub-bands.

[0074] In one possible implementation, the method further includes: after detecting one or more initial signals, the UE determines the PDCCH candidates to be monitored and the PDCCH candidates associated with the initial signals. Wherein, when there are multiple initial signals, the UE only monitors the PDCCH candidates associated with each initial signal. This method of determining the PDCCH to be monitored through association is suitable for UE-specific PDCCHs, that is, the DCI content corresponding to the PDCCH is only for a specific UE.

[0075] In one possible implementation, after the UE detects one or more initial signals, it determines the PDCCH candidates that need to be monitored and the PDCCH candidates associated with the initial signals, and further includes: after the UE detects the initial signals, it monitors the PDCCH candidates associated with the initial signals.

[0076] In one example, after successfully detecting an initial signal, the UE determines the PDCCH candidate associated with that initial signal. The UE only needs to listen to the associated PDCCH candidate.

[0077] In one possible implementation, after detecting one or more initial signals, the UE determines the PDCCH candidates to be monitored and the PDCCH candidates associated with the initial signals, and further includes: after detecting the initial signals, the UE determines the CORESET ID associated with the initial signals. The UE only monitors the PDCCH candidates within the associated CORESET.

[0078] In one example, after successfully detecting an initial signal, the UE determines the CORESET ID associated with that initial signal. The UE only needs to listen to the PDCCH candidates within the associated CORESET. More generally, after successfully detecting an initial signal, the UE determines the CORESET ID associated with that initial signal. The UE only needs to listen to the PDCCH candidates within the search space set associated with that associated CORESET.

[0079] In one possible implementation, after detecting one or more initial signals, the UE determines the PDCCH candidates to be monitored and the PDCCH candidates associated with the initial signals, and further includes: after detecting the initial signals, the UE determines the CORESET ID associated with the initial signals. The UE only monitors the PDCCH candidates within the search space set associated with the associated CORESET.

[0080] In one possible implementation, after detecting one or more initial signals, the UE determines the PDCCH candidates to be monitored and the PDCCH candidates associated with the initial signals, and further includes: after detecting the initial signals, the UE determines the search space set ID associated with the initial signals. The UE only needs to monitor the PDCCH candidates within the associated search space set.

[0081] In one example, after successfully detecting an initial signal, the UE determines the searchspace set ID associated with that initial signal. The UE only needs to listen to the PDCCH candidates within the associated search space set.

[0082] In one possible implementation, after the UE detects one or more initial signals, it determines the PDCCH candidate to be monitored and the PDCCH candidate associated with the initial signal, and further includes: after the UE detects the initial signal, it determines the BWP ID associated with the initial signal, and the UE determines that the BWP is activated.

[0083] In one possible implementation, the method further includes: the UE only needs to listen to all PDCCH candidates configured in the search space set within the activated BWP.

[0084] In one example, after successfully detecting an initial signal, the UE determines the BWP ID associated with that initial signal. The UE then considers the BWP to be activated, and the UE only needs to listen to all PDCCH candidates within the configured search spaceset of the activated BWP.

[0085] The above possible implementation methods are applicable not only to the case where the UE successfully detects one initial signal in the example above, but also to the case where the UE successfully detects multiple initial signals.

[0086] Figure 3 A schematic flowchart of an initial signal processing method according to an embodiment of this disclosure is shown. Figure 3 As shown, the process includes:

[0087] Step S301: After the UE detects the initial signal in the unlicensed spectrum, it listens to one or more PDCCHs according to the configured listening time.

[0088] Unlike the above embodiments, a listening time is introduced, that is, one or more PDCCHs are listened to according to the configured listening time.

[0089] In one possible implementation, the types of the one or more PDCCH candidates include: a first type of PDCCH candidate and a scheduled PDCCH candidate.

[0090] In one possible implementation, the method further includes: the UE indicating the COT structure through the first type of PDCCH candidate. The COT structure refers to the structure adopted by the base station after obtaining the channel, including time-domain and frequency-domain structures. The time-domain structure may include frame structure, time slot structure and / or symbol type (including uplink, downlink and flexible, etc.), etc., and the frequency-domain structure may include subband occupation and / or PRB occupation, etc.

[0091] Figure 4 A schematic flowchart of an initial signal processing method according to an embodiment of this disclosure is shown. Figure 4 As shown, the process includes:

[0092] Step S401: The UE detects an initial signal in the unlicensed spectrum.

[0093] Step S402: If the current time slot is not a complete time slot, then the PDCCH candidate is monitored in the remaining symbols of the current time slot according to the monitoring timing configured by RRC, or in the subsequent complete time slots of the current time slot according to the monitoring timing configured by RRC.

[0094] Specifically, the first type of PDCCH candidates are monitored according to the configured monitoring timing. The monitoring timing configuration in this disclosure refers to the PDCCH monitoring timing configured in the search space set, which is specified by the parameters in the search space set configuration.

[0095] In one possible implementation, when the listening time is the listening time of a first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

[0096] In one possible implementation, the UE listens to the first type of PDCCH candidates according to the configured listening timing, and further includes at least one combination of the following three implementation methods:

[0097] Method 1: After the UE detects the initial signal, if the current time slot is not a complete time slot, it will listen for the first type of PDCCH candidate in the remaining symbols of the current time slot based on the default method.

[0098] Method 2: After detecting the initial signal, if the current time slot is not a complete time slot, the UE will listen for PDCCH candidates in subsequent complete time slots according to the listening timing configured by RRC. When the listening timing is configured for the first type of PDCCH candidate, the first type of PDCCH candidate will be listened for.

[0099] In one possible implementation, the UE listens to the first type of PDCCH candidates according to the configured listening timing, further comprising: after detecting the initial signal, if the current time slot is not a complete time slot, the UE listens to the configured PDCCH candidates in the remaining symbols of the current time slot according to the time slots configured for partial time slots in the RRC. When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidates, the first type of PDCCH candidates are listened to.

[0100] In one possible implementation, the method further includes: monitoring PDCCH candidates in subsequent complete time slots of the current time slot according to the monitoring timing configuration of the RRC configuration. When the monitoring timing configuration is the monitoring timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

[0101] Method 3: In one possible implementation, the UE listens to the first type of PDCCH candidates according to the configured listening timing, further comprising: after detecting the initial signal, if the current time slot is not a complete time slot, the UE does not need to listen to the first type of PDCCH candidates in the current time slot. Instead, it listens to the PDCCH candidates in subsequent complete time slots according to the listening timing configured by RRC. When the listening timing is configured for the first type of PDCCH candidates, the first type of PDCCH candidates are listened to.

[0102] For an example of listening to the first type of PDCCH candidate:

[0103] After successfully detecting the initial signal, if the current time slot is not a "complete time slot", the UE will listen for the first type of PDCCH candidate in the remaining symbols of the current time slot according to the listening timing configuration of the RRC (the search space set configuration of the first type of PDCCH candidate). In subsequent complete time slots, the UE will listen for the first type of PDCCH candidate according to the listening timing configuration of the RRC (the search space set configuration of the first type of PDCCH candidate).

[0104] After successfully detecting the initial signal, if the current time slot is not a complete time slot, the UE will listen for the first type of PDCCH candidates in the remaining symbols of the current time slot according to the default method. For example, by default, the first symbol of every two symbols is the starting symbol for PDCCH listening. In subsequent complete time slots, the UE will listen for the first type of PDCCH candidates according to the listening timing configuration configured in the RRC (the search space set configuration for the first type of PDCCH candidates).

[0105] After successfully detecting the initial signal, if the current time slot is not a complete time slot, the UE will listen for the first type of PDCCH candidate within the remaining symbols of the current time slot, according to the listening timing configuration specifically for "partial time slots" (the searchspace set configuration for the first type of PDCCH candidate). In subsequent complete time slots, the UE will listen for the first type of PDCCH candidate according to the listening timing configuration configured by the RRC (the search space set configuration for the first type of PDCCH candidate).

[0106] After successfully detecting the initial signal, if the current time slot is not a complete time slot, the UE does not need to listen for the first type of PDCCH candidate within the current time slot. In subsequent complete time slots, the UE will listen for the first type of PDCCH candidate according to the listening timing configuration configured by RRC (the search space set configuration for the first type of PDCCH candidate).

[0107] In one possible implementation, the method further includes: the UE listening to the scheduling PDCCH candidate according to the configured listening timing.

[0108] In one possible implementation, the UE listens to the scheduled PDCCH candidate according to the configured listening time, and further includes: if the UE does not detect the first type of PDCCH candidate, the UE listens to the PDCCH candidate according to the listening time configuration configured by RRC, and listens to the scheduled PDCCH according to the listening time configuration.

[0109] In one possible implementation, the UE listens to the scheduling PDCCH candidate according to the configured listening time, and further includes: if the UE does not detect the first type of PDCCH candidate, then the UE does not need to listen to the scheduling PDCCH until the first type of PDCCH candidate is detected.

[0110] In one possible implementation, the method further includes: the UE obtaining the starting time slot position corresponding to the indication information of the first type of DCI.

[0111] In one possible implementation, the UE obtaining the starting time slot position corresponding to the indication information of the first type of DCI further includes: the current time slot (i.e., the time slot where the first type of PDCCH is detected) is the starting time slot corresponding to the indication information of the first type of DCI. This method is suitable when the indication information is for the current time slot and subsequent time slots, and its advantage is that it saves overhead.

[0112] In one possible implementation, the UE obtaining the starting time slot position corresponding to the indication information of the first type of DCI further includes: if the index of the current time slot is n, and the current time slot is the k-th time slot in the COT structure, then the starting time slot index corresponding to the indication information of the first type of DCI is nk. Where k >= 0. Here, k is the index of the current time slot indicated to the UE in the COT structure. n is the index of the current time slot, or the time slot where the first type of PDCCH is detected. The UE then infers the index of the starting time slot in the COT structure as nk. This method is suitable for situations where the indication information targets the current time slot or a previous time slot as the starting time slot. The advantage is that the indication information can appear multiple times, each time targeting the same starting time slot.

[0113] In one possible implementation, the UE obtaining the starting time slot position corresponding to the indication information of the first type of DCI further includes: if the index of the current time slot is within a time slot format (SF) period (also called a time slot format indication period), then the starting time slot corresponding to the indication information of the first type of DCI is the first time slot in the time slot format period. The time slot format period is indicated by RRC signaling. This method is suitable for situations where the indication information targets a semi-statically configured time slot as the starting time slot, and is suitable for periodic time slot formats.

[0114] For an example of listening to PDCCH candidates:

[0115] If the UE fails to detect the first type of PDCCH candidate, then the UE will schedule the PDCCH listening according to the listening timing configuration in the RRC configuration.

[0116] If the UE fails to detect the first type of PDCCH candidate, then the UE does not need to listen for scheduled PDCCH until the first type of PDCCH candidate is successfully detected.

[0117] Here, the indication information for the first type of DCI is defined as including COT structure information, or slot format indicator (SFI), or both. The indication information for the first type of DCI can indicate "flexible" slots or symbols, "downlink" slots or symbols, or "uplink" slots or symbols. Generally, the UE only listens for PDCCH candidates on downlink symbols, so the indication information for the first type of DCI is relatively important.

[0118] In one possible implementation, the COT structure information in the indication information of the first type of DCI can override the information of the slot format indication. For example, when the information of the slot format indication indicates that a certain symbol is of the "flexible" type, the COT structure information in the indication information of the first type of DCI can be modified to the "downlink" type.

[0119] The indication information of Type I DCI includes information about multiple consecutive time slots starting from a certain time slot, such as the duration for which the base station occupies the channel and the format of the time slots within that duration. Generally, the UE needs to know the starting time slot position corresponding to the indication information of Type I DCI in order to deduce the information of multiple consecutive time slots.

[0120] The UE obtains the starting time slot position corresponding to the indication information of the first type of DCI through the following three methods:

[0121] Method 1:

[0122] The current time slot (i.e., the time slot in which the first type of DCI is detected) is the starting time slot corresponding to the indication information of the first type of DCI.

[0123] Method 2:

[0124] If the index of the current time slot is n, and the current time slot is the kth time slot in the COT structure, then the index of the starting time slot corresponding to the indication information of the first type of DCI is (nk).

[0125] Method 3:

[0126] If the index of the current time slot is in the m-th time slot format cycle (the time slot format cycle is indicated by RRC signaling), then the starting time slot corresponding to the indication information of the first type of DCI is the first time slot in the m-th time slot format cycle.

[0127] Figure 5 A schematic diagram of the structure of an initial signal processing device according to this disclosure is shown. Figure 5 As shown, the device includes: a monitoring unit 21, used to determine one or more PDCCH candidates to be monitored after detecting an initial signal in the unlicensed spectrum; and an indication unit 22, used to indicate the COT structure through the first type of PDCCH candidates. This initial signal processing device can be specifically a user equipment or located on the user equipment side.

[0128] In one possible implementation, the types of the one or more PDCCH candidates include: a first type of PDCCH candidate and a scheduled PDCCH candidate.

[0129] In one possible implementation, the monitoring unit further includes: a first acquisition subunit, configured to obtain a first type of DCI by monitoring the first type of PDCCH candidates. The first monitoring subunit is configured to determine the PDCCH candidates to be monitored based on the first type of DCI.

[0130] In one possible implementation, the first monitoring subunit is further configured to: after detecting the initial signal, determine a first type of DCI; and after determining all candidate CORESETs based on the first type of DCI, determine the PDCCH candidates to be monitored.

[0131] In one possible implementation, the first monitoring subunit is further configured to: after detecting the initial signal, determine a first type of DCI; and after determining all candidate search space sets based on the first type of DCI, determine the PDCCH candidates to be monitored.

[0132] In one possible implementation, the first monitoring subunit is further configured to: after detecting the initial signal, determine a first type of DCI; and after determining all candidate BWPs based on the first type of DCI, determine the PDCCH candidates to be monitored.

[0133] In one possible implementation, after detecting the initial signal, the PDCCH candidates to be monitored are determined to include: the first type of PDCCH candidates.

[0134] In one possible implementation, the monitoring unit further includes a second monitoring subunit, configured to determine, after detecting the initial signal in one or more subbands, that the frequency domain resources of the PDCCH candidate to be monitored are within the subband.

[0135] In one possible implementation, the second monitoring subunit is further configured to: after detecting the initial signal in the subband, during the process of determining all candidate PDCCHs, if the frequency domain resources of the candidate PDCCH are contained in the subband, then determine that the candidate PDCCH needs to be monitored.

[0136] In one possible implementation, the second monitoring subunit is further configured to: after detecting the initial signal in the subband, during the process of determining all candidate CORESETs, if the CORESET is contained in the subband, then determine that the PDCCH candidate in the CORESET needs to be monitored.

[0137] In one possible implementation, the second monitoring subunit is further configured to: after detecting the initial signal in the subband, during the process of determining all candidate search space sets, if the CORESET associated with the search space set is included in the subband, then determine that the search space set needs to be monitored.

[0138] In one possible implementation, the second monitoring subunit is further configured to: after detecting the initial signal within the subband, determine all candidate BWPs. If a BWP is included within the subband, then the BWP is determined to be activated.

[0139] In one possible implementation, the second monitoring subunit is further configured to: determine that all PDCCHs configured in the search space set within the BWP need to be detected after the BWP is activated by the verification.

[0140] In one possible implementation, the monitoring unit further includes a third monitoring subunit, configured to determine, after detecting one or more initial signals, the PDCCH candidates to be monitored that are associated with the initial signals. Specifically, when there are multiple initial signals, the monitoring subunit listens to the PDCCH candidates associated with each of the multiple initial signals.

[0141] In one possible implementation, the third listening subunit is further configured to: after detecting the initial signal, listen to the PDCCH candidate associated with the initial signal.

[0142] In one possible implementation, the third listening subunit is further configured to: after detecting the initial signal, determine the CORESET ID associated with the initial signal, and only listen to the PDCCH candidates within the associated CORESET.

[0143] In one possible implementation, the third monitoring subunit is further configured to: after detecting the initial signal, determine the CORESET ID associated with the initial signal, and only monitor the PDCCH candidates within the search space set associated with the associated CORESET.

[0144] In one possible implementation, the third monitoring subunit is further configured to: after detecting the initial signal, determine the search space set ID associated with the initial signal, and only monitor the PDCCH candidates within the associated search space set.

[0145] In one possible implementation, the third listening subunit is further configured to: determine the BWP ID associated with the initial signal after detecting the initial signal, and the UE determines that the BWP is activated.

[0146] In one possible implementation, the third listening subunit is further configured to: listen only to all PDCCH candidates configured in the search space set within the activated BWP.

[0147] Figure 6 A schematic diagram of the structure of an initial signal processing device according to this disclosure is shown. Figure 6 As shown, the device includes: a candidate monitoring unit 31, used to monitor one or more DCCH candidates according to a configured monitoring timing after detecting an initial signal in the unlicensed spectrum; and a structure indication unit 32, used to indicate the COT structure through the first type of PDCCH candidates. This initial signal processing device can be specifically a user equipment or located on the user equipment side.

[0148] In one possible implementation, the types of the one or more PDCCH candidates include: a first type of PDCCH candidate and a scheduled PDCCH candidate.

[0149] In one possible implementation, the device further includes: the candidate listening unit, which further includes: a first candidate listening subunit, configured to listen to the first type of PDCCH candidate according to the configured listening timing.

[0150] In one possible implementation, the first candidate monitoring subunit is further configured to: after detecting the initial signal, if the current time slot is not a complete time slot, monitor PDCCH candidates according to the monitoring timing configured by RRC in the remaining symbols of the current time slot, or according to the monitoring timing configured by RRC in the subsequent complete time slots of the current time slot. When the monitoring timing configuration is configured for the first type of PDCCH candidates, the first type of PDCCH candidates are monitored.

[0151] In one possible implementation, the first candidate listening subunit is further configured to: after detecting the initial signal, if the current time slot is not a complete time slot, listen for the first type of PDCCH candidate in the remaining symbols of the current time slot based on a default method.

[0152] In one possible implementation, the first candidate monitoring subunit is further configured to: monitor PDCCH candidates in subsequent complete time slots of the current time slot according to the monitoring timing configured by RRC. When the monitoring timing is configured as the monitoring timing configuration for the first type of PDCCH candidates, the first type of PDCCH candidates are monitored.

[0153] In one possible implementation, the first candidate monitoring subunit is further configured to: after detecting the initial signal, if the current time slot is not a complete time slot, monitor the first type of PDCCH candidates in the remaining symbols of the current time slot using a default method; and monitor the PDCCH candidates in subsequent complete time slots of the current time slot according to the monitoring timing configured by RRC. When the monitoring timing is configured as the monitoring timing configuration for the first type of PDCCH candidates, the first type of PDCCH candidates are monitored.

[0154] In one possible implementation, the first candidate monitoring subunit is further configured to: after the UE detects the initial signal, if the current time slot is not a complete time slot, monitor the PDCCH candidate in the remaining symbols of the current time slot according to the time slot configured by RRC to form a partial time slot. When the monitoring timing is configured as the monitoring timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

[0155] In one possible implementation, the first candidate monitoring subunit is further configured to: monitor PDCCH candidates in subsequent complete time slots of the current time slot according to the monitoring timing configuration of the RRC. When the monitoring timing configuration is configured for the first type of PDCCH candidates, the first type of PDCCH candidates are monitored.

[0156] In one possible implementation, the first candidate monitoring subunit is further configured to: after detecting the initial signal, if the current time slot is not a complete time slot, then it is not necessary to monitor the first type of PDCCH candidate within the current time slot; instead, in subsequent complete time slots of the current time slot, monitor the PDCCH candidate according to the time slot configured by RRC. When the monitoring timing is configured as the monitoring timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

[0157] In one possible implementation, the candidate listening unit further includes: a second candidate listening subunit, used to listen to the scheduling PDCCH candidate according to the configured listening timing.

[0158] In one possible implementation, the second candidate listening subunit is further configured to: if no first type of PDCCH candidate is detected, listen to the PDCCH candidate according to the listening timing configuration of the RRC, and listen to the scheduled PDCCH according to the listening timing configuration.

[0159] In one possible implementation, the second candidate listening subunit is further configured to: if no first type of PDCCH candidate is detected, then it is not necessary to listen to the scheduled PDCCH until the first type of PDCCH candidate is detected.

[0160] In one possible implementation, the device further includes an index acquisition unit, used to acquire the starting time slot position corresponding to the indication information of the first type of DCI.

[0161] In one possible implementation, the index acquisition unit is further configured to: the current time slot (i.e., the time slot in which the first type of PDCCH is detected) is the starting time slot corresponding to the indication information of the first type of DCI.

[0162] In one possible implementation, the index acquisition unit is further configured to: if the index of the current time slot is n, and the current time slot is the kth time slot in the COT structure, then the starting time slot index corresponding to the indication information of the first type of DCI is nk. Where k >= 0.

[0163] In one possible implementation, the index acquisition unit is further configured to: if the index of the current time slot is within a time slot format period, then the starting time slot corresponding to the indication information of the first type of DCI is: the first time slot in the time slot format period. The time slot format period is indicated by RRC signaling.

[0164] Figure 7 This is a block diagram illustrating an initial signal processing device 800 according to an exemplary embodiment. For example, the initial signal processing device 800 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0165] Reference Figure 7 The initial signal processing device 800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input / output (I / O) interface 812, sensor component 814, and communication component 816.

[0166] Processing component 802 typically controls the overall operation of the initial signal processing device 800, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0167] Memory 804 is configured to store various types of data to support the operation of the initial signal processing device 800. Examples of such data include instructions for any application or method operating on the initial signal processing device 800, contact data, phone book data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0168] Power supply component 806 provides power to various components of the initial signal processing device 800. Power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the initial signal processing device 800.

[0169] The multimedia component 808 includes a screen that provides an output interface between the initial signal processing device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When the initial signal processing device 800 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0170] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when the initial signal processing device 800 is in an operating mode, such as a call mode, recording mode, or voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0171] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0172] Sensor assembly 814 includes one or more sensors for providing state assessments of various aspects of the initial signal processing device 800. For example, sensor assembly 814 may detect the on / off state of the initial signal processing device 800, the relative positioning of components such as the display and keypad of the initial signal processing device 800, changes in the position of the initial signal processing device 800 or one of its components, the presence or absence of user contact with the initial signal processing device 800, the orientation or acceleration / deceleration of the initial signal processing device 800, and temperature changes of the initial signal processing device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0173] The communication component 816 is configured to facilitate wired or wireless communication between the initial signal processing device 800 and other devices. The initial signal processing device 800 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0174] In an exemplary embodiment, the initial signal processing device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0175] In an exemplary embodiment, a non-volatile computer-readable storage medium is also provided, such as a memory 804 including computer program instructions that can be executed by a processor 820 of an initial signal processing device 800 to perform the above-described method.

[0176] In an exemplary embodiment, a non-volatile computer-readable storage medium is also provided, such as a memory 804 including computer program instructions that can be executed by a processing component 802 of an initial signal processing device 800 to perform the above-described method.

[0177] This disclosure can be a system, method, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of this disclosure.

[0178] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example—but not limited to—electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination thereof. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0179] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0180] Computer program instructions used to perform the operations of this disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing the status information of the computer-readable program instructions to implement various aspects of this disclosure.

[0181] Various aspects of this disclosure are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0182] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0183] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0184] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0185] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

[0186] This disclosure can be a system, method, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of this disclosure.

[0187] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example—but not limited to—electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination thereof. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0188] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0189] Computer program instructions used to perform the operations of this disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing the status information of the computer-readable program instructions to implement various aspects of this disclosure.

[0190] Various aspects of this disclosure are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0191] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0192] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0193] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0194] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An initial signal processing method, characterized in that, The method includes: After detecting the initial signal, the UE determines the first type of PDCCH candidate to be monitored; If the UE fails to detect the first type of PDCCH candidate, then the UE will listen for the scheduled PDCCH according to the listening timing configuration of the RRC, or the UE will not need to listen for the scheduled PDCCH until the first type of PDCCH candidate is successfully detected. The first type of downlink control information (DCI) is obtained by listening to the first type of PDCCH candidates. The first type of DCI determines the PDCCH candidates that need to be monitored, and the type of the PDCCH candidates includes scheduled PDCCH.

2. The method according to claim 1, characterized in that, The method further includes: the UE indicating the Channel Occupied Time (COT) structure through the first type of PDCCH candidate.

3. The method according to claim 1, characterized in that, The UE determines the PDCCH candidates to be monitored through the first type of DCI, including: After detecting the initial signal, the first type of DCI is determined; After determining all candidate control resource sets (CORESET) based on the first type of DCI, the PDCCH candidates to be monitored are determined.

4. The method according to claim 1, characterized in that, The UE determines the PDCCH candidates to be monitored through the first type of DCI, including: After detecting the initial signal, the first type of DCI is determined; After determining the search space set of all candidates based on the first type of DCI, the PDCCH candidates to be monitored are determined.

5. The method according to claim 1, characterized in that, The UE determines the PDCCH candidates to be monitored through the first type of DCI, including: After detecting the initial signal, the first type of DCI is determined; After determining all candidate partial bandwidths (BWP) based on the first type of DCI, the PDCCH candidates to be monitored are determined.

6. The method according to claim 1, characterized in that, After detecting the initial signal, it is determined that the PDCCH candidates to be monitored include: the first type of PDCCH candidates.

7. The method according to claim 6, characterized in that, The method further includes: After the initial signal is detected in one or more subbands, the frequency domain resources of the PDCCH candidate to be monitored are determined to be within the subband.

8. The method according to claim 7, characterized in that, After detecting the initial signal in one or more sub-bands, the step of determining that the frequency domain resources of the PDCCH candidate to be monitored are within the sub-bands further includes: After the UE detects the initial signal in the subband, during the process of determining all candidate PDCCHs, if the frequency domain resources of the candidate PDCCH are contained in the subband, the UE determines that it needs to listen to the candidate PDCCH.

9. The method according to claim 7, characterized in that, After detecting the initial signal in one or more sub-bands, determining that the frequency domain resources of the PDCCH to be monitored are within the sub-bands further includes: After the UE detects the initial signal in the subband, during the process of determining all candidate CORESETs, if the CORESET is included in the subband, the UE determines that it needs to listen to the PDCCH candidate in the CORESET.

10. The method according to claim 7, characterized in that, After detecting the initial signal in one or more sub-bands, determining that the frequency domain resources of the PDCCH to be monitored are within the sub-bands further includes: After the UE detects the initial signal in the subband, during the process of determining all candidate search space sets, if the CORESET associated with the search space set is included in the subband, the UE determines that it needs to listen to the search space set.

11. The method according to claim 7, characterized in that, After detecting the initial signal in one or more sub-bands, determining that the frequency domain resources of the PDCCH to be monitored are within the sub-bands further includes: After the UE detects the initial signal in the subband, it determines all candidate BWPs. If the BWP is included within the subband, the UE determines that the BWP is activated.

12. The method according to claim 11, characterized in that, The method further includes: after the UE determines that the BWP is activated... The UE determines that all PDCCHs configured in the search space set within the BWP need to be detected.

13. The method according to claim 6, characterized in that, The method further includes: After detecting one or more initial signals, the UE determines the PDCCH candidates that need to be monitored and the PDCCH candidates associated with the initial signals. When there are multiple initial signals, the UE listens to the PDCCH candidate associated with each of the multiple initial signals.

14. The method according to claim 13, characterized in that, After detecting one or more initial signals, the UE determines the PDCCH candidates to be monitored and the PDCCH candidates associated with the initial signals, and further includes: After detecting the initial signal, the UE listens to the PDCCH candidate associated with the initial signal.

15. The method according to claim 13, characterized in that, After detecting one or more initial signals, the UE determines the PDCCH candidates to be monitored and the PDCCH candidates associated with the initial signals, and further includes: After detecting the initial signal, the UE determines the CORESET ID associated with the initial signal; The UE only listens to PDCCH candidates within the associated CORESET.

16. The method according to claim 13, characterized in that, After detecting one or more initial signals, the UE determines the PDCCH candidates to be monitored and the PDCCH candidates associated with the initial signals, and further includes: After detecting the initial signal, the UE determines the CORESET ID associated with the initial signal; The UE only listens to PDCCH candidates within the search space set associated with the associated CORESET.

17. The method according to claim 13, characterized in that, After detecting one or more initial signals, the UE determines the PDCCH candidates to be monitored and the PDCCH candidates associated with the initial signals, and further includes: After detecting the initial signal, the UE determines the search space set ID associated with the initial signal; The UE only needs to listen to the PDCCH candidates within the associated search space set.

18. The method according to claim 13, characterized in that, After detecting one or more initial signals, the UE determines the PDCCH candidates to be monitored and the PDCCH candidates associated with the initial signals, and further includes: After detecting the initial signal, the UE determines the BWP ID associated with the initial signal, and the UE determines that the BWP is activated.

19. The method according to claim 18, characterized in that, The method further includes: The UE only needs to listen to all PDCCH candidates configured in the search space set within the activated BWP.

20. The method according to claim 1, characterized in that, The method further includes: The UE obtains the starting time slot position corresponding to the indication information of the first type of DCI.

21. The method according to claim 20, characterized in that, The UE obtaining the starting time slot position corresponding to the indication information of the first type of DCI further includes: The current time slot is the starting time slot corresponding to the indication information of the first type of DCI.

22. The method according to claim 20, characterized in that, The UE obtaining the starting time slot position corresponding to the indication information of the first type of DCI further includes: If the index of the current time slot is n, and the current time slot is the kth time slot in the COT structure, then the starting time slot position corresponding to the indication information of the first type of DCI is: nk; where k>=0.

23. The method according to claim 20, characterized in that, The UE obtaining the starting time slot position corresponding to the indication information of the first type of DCI further includes: If the index of the current time slot is within a time slot format period, then the starting time slot corresponding to the indication information of the first type of DCI is: the first time slot in the time slot format period; The time slot format period is indicated by RRC signaling.

24. An initial signal processing method, characterized in that, The method includes: After detecting the initial signal, the UE listens for Physical Downlink Control Channel (PDCCH) candidates according to the configured listening timing, which is the listening timing specified by the parameters in the search space set configuration.

25. The method according to claim 24, characterized in that, The types of PDCCH candidates include at least one of the following: first type PDCCH candidates and scheduled PDCCH candidates.

26. The method according to claim 25, characterized in that, The method further includes: the UE indicating the Channel Occupied Time (COT) structure through the first type of PDCCH candidate.

27. The method according to claim 25, characterized in that, The method includes: The UE listens to the first type of PDCCH candidates according to the configured listening time.

28. The method according to claim 27, characterized in that, The UE listens to the first type of PDCCH candidates according to the configured listening timing, and also includes: After detecting the initial signal, if the current time slot is not a complete time slot, the UE will configure the listening timing according to the Radio Resource Control (RRC) in the remaining symbols of the current time slot, or configure the listening timing according to the RRC in the subsequent complete time slots of the current time slot. When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

29. The method according to claim 27, characterized in that, The UE listens to the first type of PDCCH candidates according to the configured listening timing, and also includes: After detecting the initial signal, if the current time slot is not a complete time slot, the UE will listen for the first type of PDCCH candidate in the remaining symbols of the current time slot based on the default method. And / or, in subsequent full time slots of the current time slot, listen for PDCCH candidates according to the listening timing configuration of the RRC configuration; When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

30. The method according to claim 27, characterized in that, The UE listens to the first type of PDCCH candidates according to the configured listening timing, and also includes: After detecting the initial signal, if the current time slot is not a complete time slot, the UE configures a PDCCH candidate for monitoring in the remaining symbols of the current time slot according to the monitoring timing for partial time slots configured by RRC. When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

31. The method according to claim 30, characterized in that, The method further includes: In subsequent complete time slots of the current time slot, PDCCH candidates are configured to be monitored according to the monitoring timing configured by RRC; When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

32. The method according to claim 27, characterized in that, The UE listens to the first type of PDCCH candidates according to the configured listening timing, and also includes: After the UE detects the initial signal, if the current time slot is not a complete time slot, it does not need to listen for the first type of PDCCH candidate in the current time slot. In subsequent full time slots of the current time slot, listen for PDCCH candidates according to the listening timing configured by RRC; When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

33. The method according to claim 25, characterized in that, The method further includes: The UE listens to the scheduling PDCCH candidates according to the configured listening time.

34. The method according to claim 33, characterized in that, The UE listens to the scheduling PDCCH candidates according to the configured listening timing, and also includes: If the UE does not detect the first type of PDCCH candidate, the UE listens to the PDCCH candidate according to the listening timing configured in the RRC, and listens to the scheduled PDCCH according to the listening timing configuration.

35. The method according to claim 33, characterized in that, The UE listens to the scheduling PDCCH candidates according to the configured listening timing, and also includes: If the UE does not detect the first type of PDCCH candidate, the UE does not need to listen to the scheduling PDCCH until the first type of PDCCH candidate is detected.

36. An initial signal processing device, characterized in that, The device includes: a monitoring unit, the monitoring unit comprising: The first acquisition subunit is used to determine the first type of PDCCH candidate to be monitored after detecting the initial signal; if the UE fails to detect the first type of PDCCH candidate, the UE monitors the scheduled PDCCH according to the monitoring timing configuration configured by RRC, or the UE does not need to monitor the scheduled PDCCH until the first type of PDCCH candidate is successfully detected; and obtains the first type of downlink control information (DCI) by monitoring the first type of PDCCH candidate. The first monitoring subunit is used to determine the PDCCH candidates to be monitored through the first type of DCI, wherein the type of the PDCCH candidate includes scheduled PDCCH.

37. The device according to claim 36, characterized in that, The device also includes: The indication unit is used to indicate the Channel Occupied Time (COT) structure through the first type of PDCCH candidate.

38. The device according to claim 36, characterized in that, The first monitoring subunit is further configured to: After detecting the initial signal, the first type of DCI is determined; After determining all candidate control resource sets (CORESET) based on the first type of DCI, the PDCCH candidates to be monitored are determined.

39. The device according to claim 36, characterized in that, The first monitoring subunit is further configured to: After detecting the initial signal, the first type of DCI is determined; After determining the search space set of all candidates based on the first type of DCI, the PDCCH candidates to be monitored are determined.

40. The device according to claim 36, characterized in that, The first monitoring subunit is further configured to: After detecting the initial signal, the first type of DCI is determined; After determining all candidate partial bandwidths (BWP) based on the first type of DCI, the PDCCH candidates to be monitored are determined.

41. The device according to claim 36, characterized in that, After detecting the initial signal, it is determined that the PDCCH candidates to be monitored include: the first type of PDCCH candidates.

42. The device according to claim 41, characterized in that, The monitoring unit also includes: The second monitoring subunit is used to determine, after detecting the initial signal in one or more subbands, that the frequency domain resources of the PDCCH candidate to be monitored are in the subband.

43. The device according to claim 42, characterized in that, The second listening subunit is further used for: After the initial signal is detected in the sub-band, during the process of determining all candidate PDCCHs, if the frequency domain resources of the candidate PDCCH are contained in the sub-band, then it is determined that the candidate PDCCH needs to be monitored.

44. The device according to claim 42, characterized in that, The second listening subunit is further used for: After the initial signal is detected in the subband, during the process of determining all candidate CORESETs, if the CORESET is contained in the subband, then it is determined that the PDCCH candidate in the CORESET needs to be monitored.

45. The device according to claim 42, characterized in that, The second listening subunit is further used for: After the initial signal is detected in the subband, during the process of determining all candidate search space sets, if the CORESET associated with the search space set is included in the subband, then it is determined that the search space set needs to be monitored.

46. ​​The device according to claim 42, characterized in that, The second listening subunit is further used for: After the initial signal is detected within the subband, all candidate BWPs are determined; If the BWP is contained within the subband, then the BWP is determined to be activated.

47. The device according to claim 46, characterized in that, The second listening subunit is further used for: Once the BWP is activated, it is determined that all PDCCHs configured in the search space set within the BWP need to be detected.

48. The device according to claim 41, characterized in that, The monitoring unit also includes: The third monitoring subunit is used to determine, after detecting one or more initial signals, the PDCCH candidates that need to be monitored and the PDCCH candidates associated with the initial signals. When there are multiple initial signals, the PDCCH candidate associated with each initial signal is monitored.

49. The device according to claim 48, characterized in that, The third monitoring subunit is further used for: After the initial signal is detected, the PDCCH candidate associated with the initial signal is monitored.

50. The device according to claim 48, characterized in that, The third monitoring subunit is further used for: After the initial signal is detected, the CORESET ID associated with the initial signal is determined; Only listen to the PDCCH candidates within the associated CORESET.

51. The device according to claim 48, characterized in that, The third monitoring subunit is further used for: After the initial signal is detected, the CORESET ID associated with the initial signal is determined; Only PDCCH candidates within the search space set associated with the relevant CORESET are monitored.

52. The device according to claim 48, characterized in that, The third monitoring subunit is further used for: After the initial signal is detected, the search space set ID associated with the initial signal is determined; Simply listen to the PDCCH candidates within the associated search space set.

53. The device according to claim 48, characterized in that, The third monitoring subunit is further used for: After detecting the initial signal, the BWP ID associated with the initial signal is determined, and it is determined that the BWP is activated.

54. The device according to claim 53, characterized in that, The third monitoring subunit is further used for: Simply listen to all PDCCH candidates configured in the search space set within the activated BWP.

55. The device according to claim 36, characterized in that, The device also includes: The index acquisition unit is used to acquire the starting time slot position corresponding to the indication information of the first type of DCI.

56. The device according to claim 55, characterized in that, The index acquisition unit is further configured to: the current time slot is the starting time slot corresponding to the indication information of the first type of DCI.

57. The device according to claim 55, characterized in that, The index acquisition unit is further used for: If the index of the current time slot is n, and the current time slot is the kth time slot in the COT structure, then the starting time slot index corresponding to the indication information of the first type of DCI is: nk; where k>=0.

58. The device according to claim 55, characterized in that, The index acquisition unit is further used for: If the index of the current time slot is within a time slot format period, then the starting time slot corresponding to the indication information of the first type of DCI is: the first time slot in the time slot format period; The time slot format period is indicated by RRC signaling.

59. An initial signal processing device, characterized in that, The device includes: The candidate listening unit is used to listen to physical downlink control channel (PDCCH) candidates according to the configured listening timing after the initial signal is detected, wherein the listening timing is the listening timing specified by the parameters in the search space set configuration.

60. The device according to claim 59, characterized in that, The types of PDCCH candidates include at least one of the following: first type PDCCH candidates and scheduled PDCCH candidates.

61. The device according to claim 60, characterized in that, The device also includes: The structure indication unit is used to indicate the Channel Occupied Time (COT) structure through the first type of PDCCH candidate.

62. The device according to claim 60, characterized in that, The candidate monitoring unit further includes: The first candidate listening subunit is used to listen to the first type of PDCCH candidate according to the configured listening time.

63. The device according to claim 62, characterized in that, The first candidate monitoring subunit is further configured to: After the initial signal is detected, if the current time slot is not a complete time slot, then the PDCCH candidate is configured to be monitored in the remaining symbols of the current time slot according to the time slot configured by Radio Resource Control (RRC), or in the subsequent complete time slot of the current time slot according to the monitoring timing configured by RRC. When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

64. The device according to claim 62, characterized in that, The first candidate monitoring subunit is further configured to: After the initial signal is detected, if the current time slot is not a complete time slot, the first type of PDCCH candidate will be monitored in the remaining symbols of the current time slot based on the default method. And / or, in subsequent full time slots of the current time slot, listen for PDCCH candidates according to the listening timing configuration of the RRC configuration; When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

65. The device according to claim 62, characterized in that, The first candidate monitoring subunit is further configured to: After the initial signal is detected, if the current time slot is not a complete time slot, then in the remaining symbols of the current time slot, a PDCCH candidate is configured to listen for partial time slots according to the listening timing configured by RRC. When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

66. The device according to claim 65, characterized in that, The first candidate monitoring subunit is further configured to: In subsequent complete time slots of the current time slot, PDCCH candidates are configured to be monitored according to the monitoring timing configured by RRC; When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

67. The device according to claim 62, characterized in that, The first candidate monitoring subunit is further configured to: After the initial signal is detected, if the current time slot is not a complete time slot, it is not necessary to listen for the first type of PDCCH candidate in the current time slot. In subsequent full time slots of the current time slot, listen for PDCCH candidates according to the listening timing configured by RRC; When the listening timing is configured as the listening timing configuration for the first type of PDCCH candidate, the first type of PDCCH candidate is monitored.

68. The device according to claim 60, characterized in that, The candidate monitoring unit further includes: The second candidate monitoring subunit is used to monitor the scheduling PDCCH candidate according to the configured monitoring timing.

69. The device according to claim 68, characterized in that, The second candidate listening subunit is further used for: If no PDCCH candidate of the first type is detected, then the PDCCH candidate is monitored according to the monitoring timing configured in the RRC configuration, and the scheduled PDCCH is monitored according to the monitoring timing configuration.

70. The device according to claim 68, characterized in that, The second candidate listening subunit is further used for: If no candidate of the first type of PDCCH is detected, then there is no need to listen to the scheduled PDCCH until the candidate of the first type of PDCCH is detected.

71. A non-volatile computer-readable storage medium storing computer program instructions thereon, characterized in that, When the computer program instructions are executed by the processor, they implement the method described in any one of claims 1 to 19 and claims 20 to 35.

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