CN110475211B

CN110475211B - Configuration method, monitoring method and device, storage medium, terminal and base station of public search space

Info

Publication number: CN110475211B
Application number: CN201810448316.5A
Authority: CN
Inventors: 高兴航; 黄甦
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2018-05-11
Filing date: 2018-05-11
Publication date: 2021-09-28
Anticipated expiration: 2038-05-11
Also published as: CN110475211A

Abstract

A configuration method, a monitoring method and device, a storage medium, a terminal and a base station of a public search space are provided, wherein the configuration method comprises the following steps: determining a type of the common search space; and determining a parameter set according to the type of the common search space, wherein the parameter set is used for indicating the time for transmitting the control message on the corresponding common search space by each of the plurality of beams. The scheme provided by the invention provides a configuration and monitoring scheme of a public search space suitable for a multi-beam scene, and can greatly reduce the signaling overhead of a network and the power consumption of a terminal.

Description

Configuration method, monitoring method and device, storage medium, terminal and base station of public search space

Technical Field

The invention relates to the technical field of communication, in particular to a configuration method, a monitoring method and a device of a public search space, a storage medium, a terminal and a base station.

Background

With the development of the fifth Generation mobile communication technology (5th-Generation, abbreviated as 5G), the concept of multi-beam is introduced in the New Radio (NR, also referred to as New Radio) system. For the idle terminal, the base station cannot determine the beam on which the terminal resides. When a called terminal or system information update indication occurs, the base station needs to transmit paging information or system information on each beam to ensure that the corresponding terminal can correctly receive the information.

However, the prior art does not provide an effective configuration and monitoring scheme for a common search space (which may be used for paging or for periodic broadcast), which can simultaneously achieve the effects of reducing the signaling overhead of the network and reducing the power consumption of the terminal.

Disclosure of Invention

The technical problem to be solved by the invention is how to provide a configuration and monitoring scheme of a public search space suitable for a multi-beam scene so as to reduce the signaling overhead of a network and the power consumption of a terminal.

To solve the foregoing technical problem, an embodiment of the present invention provides a method for configuring a public search space, including: determining a type of the common search space; and determining a parameter set according to the type of the common search space, wherein the parameter set is used for indicating the time for transmitting the control message on the corresponding common search space by each of the plurality of beams.

Optionally, the configuration method further includes: the parameter set is sent via a system message.

Optionally, the types of the common search space include: a common search space for paging; a common search space for periodic broadcast system information, which refers to periodic broadcast system information other than SIB 1.

Optionally, the determining a parameter set according to the type of the common search space includes: when the type of the public search space is the public search space for paging, the parameter set comprises a position parameter of a paging occasion time slot and a mapping density of an SSB and the paging occasion time slot; when the type of the common search space is a common search space for periodically broadcasting system information, the parameter set includes a position parameter of a time slot of a periodic broadcast system information opportunity, and the SSB and the mapping density of the time slot of the periodic broadcast system information opportunity, where the SSB and the beam are in one-to-one correspondence.

Optionally, the location parameter of the paging occasion slot includes at least one of: the offset of the downlink time slot of the paging occasion time slot relative to the position of the last SSB transmission in the SSB burst set, and the starting symbol of the paging occasion time slot in the downlink time slot; the position parameters of the time slot of the periodic broadcast system information opportunity comprise: and the starting symbol of the periodical broadcasting system information opportunity time slot in the periodical broadcasting system information time slot.

Optionally, the parameter set further includes: an association between a duration of the paging occasion slot or periodic broadcast system information occasion slot and a duration of a set of control resources of the RMSI.

Optionally, when the type of the common search space is a common search space for paging, the parameter set further includes: a paging DRX cycle and a number of opportunity slots within the paging DRX cycle.

To solve the foregoing technical problem, an embodiment of the present invention further provides a device for configuring a public search space, including: a first determining module for determining a type of the common search space; a second determining module, configured to determine a parameter set according to a type of the common search space, where the parameter set is used to indicate timings at which the plurality of beams respectively transmit the control message on the corresponding common search space.

In order to solve the above technical problem, an embodiment of the present invention further provides a method for monitoring a public search space, including: receiving a set of parameters indicating respective occasions at which a plurality of beams transmit control messages over a corresponding common search space; determining the time slot of the opportunity for sending the control message on each wave beam according to the parameter set; and monitoring the common search space on the time slot corresponding to the beam needing to be monitored so as to acquire the control message sent on the beam.

Optionally, the parameter set is received via a system message.

Optionally, the common search space includes: a common search space for paging; a common search space for periodic broadcast system information, which refers to periodic broadcast system information other than SIB 1.

Optionally, when the common search space is a common search space for paging, the parameter set includes a location parameter of a paging occasion slot, and a mapping density of an SSB and the paging occasion slot; when the common search space is a common search space for periodically broadcasting system information, the parameter set includes a position parameter of a time slot of a periodic broadcast system information opportunity, and the SSB and the mapping density of the time slot of the periodic broadcast system information opportunity, where the SSB corresponds to the beam one to one.

Optionally, when the common search space is a common search space for paging, the opportunity slot is a paging opportunity slot, and determining the opportunity slot for sending the control message on each beam according to the parameter set includes: monitoring the public search space according to the minimum value in the paging DRX period indicated by the system message and the paging period indicated by the high-level signaling; and determining the paging occasion time slot associated with each beam according to the parameter set and the duration of the paging occasion time slot, wherein the duration of the paging occasion time slot is determined according to the association relation between the duration of the paging occasion time slot and the duration of a control resource set of the RMSI.

Optionally, the determining, according to the parameter set and the duration of the paging occasion slot, the paging occasion slot associated with each beam includes: determining the mapping relation between the SSB and the paging occasion time slot according to the mapping density of the SSB and the paging occasion time slot; and determining the paging occasion time slot which is respectively associated with the SSB which is actually transmitted according to the mapping relation between the SSB and the paging occasion time slot.

Optionally, when the type of the common search space is a common search space for periodically broadcasting system information, the time slot is a time slot for periodically broadcasting system information, and determining the time slot for sending the control message on each beam according to the parameter set includes: determining a starting frame and a starting time slot of each system information window according to the sequence of related indication information of the periodic broadcast system information appearing in a scheduling information list, the period of the periodic broadcast system information and the system information window; monitoring the public search space according to the period of the periodic broadcast system information indicated by the system information; and determining the periodic broadcast system information opportunity time slot associated with each beam according to the parameter set and the duration of the periodic broadcast system information opportunity time slot, wherein the duration of the periodic broadcast system information opportunity time slot is determined according to the association relationship between the duration of the periodic broadcast system information opportunity time slot and the duration of a control resource set of the RMSI.

Optionally, the determining the periodic broadcast system information opportunity time slot associated with each beam according to the parameter set and the duration of the periodic broadcast system information opportunity time slot includes: determining the mapping relation between the SSB and the time slot of the periodic broadcast system information opportunity according to the mapping density of the SSB and the time slot of the periodic broadcast system information opportunity; and determining the periodic broadcast system information opportunity time slots respectively associated with the actually transmitted SSBs according to the mapping relation between the SSBs and the periodic broadcast system information opportunity time slots.

Optionally, an association relationship between the duration of the paging occasion slot or the periodic broadcast system information occasion slot and the duration of the control resource set of the RMSI is indicated by the parameter set, or the association relationship between the duration of the paging occasion slot or the periodic broadcast system information occasion slot and the duration of the control resource set of the RMSI is predetermined by a protocol.

Optionally, the determining the mapping relationship between the SSB and the paging occasion slot or the periodic broadcast system information occasion slot according to the mapping density between the SSB and the paging occasion slot or the periodic broadcast system information occasion slot includes: when the mapping density is N and N is 1, the actually transmitted SSB is mapped with the time slot of the paging occasion or the time slot of the periodic broadcast system information one by one; when the mapping density is N and N is greater than 1, N SSBs actually transmitted are mapped to a paging occasion time slot or a periodic broadcast system information occasion time slot; when the mapping density is N and N <1, each actually transmitted SSB is continuously mapped to 1/N paging occasion time slots or periodic broadcast system information occasion time slots; wherein the mapping density is defaulted to N-1 when the parameter set is not configured with a value of the mapping density.

Optionally, the location parameter of the paging occasion slot includes at least one of: the offset of the downlink time slot of the paging occasion time slot relative to the position of the last SSB transmission in the SSB burst set, and the starting symbol of the paging occasion time slot in the downlink time slot; the position parameters of the time slot of the information opportunity of the periodic broadcast system comprise: and the starting symbol of the periodical broadcasting system information opportunity time slot in the periodical broadcasting system information time slot.

Optionally, when the common search space is a common search space for paging, the parameter set further includes: a paging DRX cycle and a number of opportunity slots within the paging DRX cycle.

In order to solve the above technical problem, an embodiment of the present invention further provides a device for monitoring a public search space, including: a receiving module, configured to receive a parameter set, where the parameter set is used to indicate timings at which a plurality of beams each transmit a control message on a corresponding common search space; a determining module, configured to determine, according to the parameter set, an opportunity slot for sending a control message on each beam; and the monitoring module is used for monitoring the public search space on the time slot corresponding to the beam needing to be monitored so as to acquire the control message sent on the beam.

In order to solve the above technical problem, an embodiment of the present invention further provides a storage medium, where computer instructions are stored, and when the computer instructions are executed, the steps of the configuration method or the monitoring method are executed.

In order to solve the above technical problem, an embodiment of the present invention further provides a base station, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the configuration method when executing the computer instructions.

In order to solve the above technical problem, an embodiment of the present invention further provides a terminal, including a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the steps of the above listening method when running the computer instruction.

Optionally, the downlink time slot refers to an initial time slot in which all beams transmit paging control information, the paging occasion time slot refers to a time domain position in which one beam transmits paging control information, and the time domain position may use the time slot as a granularity or an OFDM symbol as a granularity; the periodic broadcast system information time slot refers to a starting time slot in which all beams transmit periodic broadcast system information, and the periodic broadcast system information time slot refers to a time domain position in which one beam transmits system information control information, and the time domain position may use a time slot as a granularity or an OFDM symbol as a granularity.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

on the base station side, an embodiment of the present invention provides a method for configuring a common search space, including: determining a type of the common search space; and determining a parameter set according to the type of the common search space, wherein the parameter set is used for indicating the time for transmitting the control message on the corresponding common search space by each of the plurality of beams. Compared with the conventional configuration scheme of the public search space designed for the LTE system, the scheme of the embodiment of the invention can better adapt to the multi-beam scene of the NR system, so that the control message is sent on the corresponding beam according to the message sending opportunity indicated by the parameter set on the premise of saving the signaling overhead of the network, and the control message can be acquired by the user equipment as required. Further, the parameter set is associated with the type of the common search space, so as to adjust the types and/or specific values of elements included in the parameter set according to the applicable scenarios of different types of common search spaces, so that the user equipment can accurately determine the listening time according to the type of the control message (corresponding to the type of the common search space and also corresponding to different application scenarios) that needs to be acquired.

On the side of user equipment, an embodiment of the present invention provides a method for monitoring a public search space, including: receiving a set of parameters indicating respective occasions at which a plurality of beams transmit control messages over a corresponding common search space; determining the time slot of the opportunity for sending the control message on each wave beam according to the parameter set; and monitoring the common search space on the time slot corresponding to the beam needing to be monitored so as to acquire the control message sent on the beam. Compared with the monitoring scheme of the public search space designed based on the LTE system, the scheme of the embodiment of the invention can better adapt to the multi-beam scene of the NR system, so that on the premise of reducing the power consumption of user equipment (UE for short), the opportunity time slot corresponding to each beam which can send the control message is determined according to the parameter set, and the public search space is monitored on the opportunity time slot corresponding to the beam which needs to be monitored so as to obtain the control message.

Further, by the scheme of the embodiment of the invention, the base station can more reasonably configure the common search space for paging or periodic broadcast system information, and the base station can indicate the configuration result to the UE through the parameter set at the cost of less signaling consumption.

Further, according to the scheme of the embodiment of the invention, the UE can monitor the public search space according to the paging DRX period indicated by the base station through the system message and the minimum value in the paging period indicated by the high-level signaling of the UE, and further determine the number of paging occasions and the paging occasion time slot corresponding to each wave beam according to the parameter set and the duration of the paging occasion time slot; alternatively, the UE can determine the respective associated periodic broadcast system information opportunity slots of each beam according to the sequence of occurrence of the related indication information of the periodic broadcast system information (e.g., OSI) in the scheduling information list, the period of the periodic broadcast system information (e.g., OSI period), the System Information (SI) window, and the parameter set, and then determine the opportunity slots of the paging or periodic broadcast system information to be monitored (i.e., the paging opportunity slots or the periodic broadcast system information opportunity slots) according to the selected SSBs and the mapping relationship between the SSBs and the paging opportunity slots or the periodic broadcast system information opportunity slots, so as to monitor the common search space (e.g., PDCCH) on the opportunity slots corresponding to the beams to be monitored to obtain the control message (e.g., scheduling resource information).

Drawings

FIG. 1 is a flow chart of a method for configuring a common search space according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an apparatus for configuring a common search space according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for listening to a common search space according to an embodiment of the present invention;

FIG. 4 is a flowchart of one embodiment of step S202 in FIG. 3;

FIG. 5 is a flow diagram of another embodiment of step S202 in FIG. 3;

fig. 6 is a schematic structural diagram of a monitoring apparatus for a common search space according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an exemplary application scenario of an embodiment of the present invention;

fig. 8 is a schematic diagram of another exemplary application scenario of an embodiment of the present invention.

Detailed Description

As will be understood by those skilled in the art, as background, in a fifth Generation mobile communication technology (5th-Generation, abbreviated as 5G) system, due to the influence of multiple beams, a base station cannot determine a beam on which a terminal resides for an idle terminal. Therefore, if there is a need for a called User Equipment (UE) or system information update indication, or for a system message that needs to be periodically broadcasted (i.e. periodically broadcasted system information), the base station needs to send a paging message or a periodic broadcast message on each beam to ensure that the corresponding UE can correctly receive the paging message or the periodic broadcast message.

The current conclusions given for recent research developments relating to paging are: a Long Term Evolution (LTE) mechanism is used, and a Paging Frame (PF) or a Paging Occasion (PO) that the UE needs to monitor is determined by using an IDentification number (ID) of the UE; the number of paging occasions in a single period may be indicated by system messages, where a paging occasion may include multiple time slots (defined as paging occasion slots in a paging scene), the length of the paging occasion may be the period length of a beam sweeping (beam sweeping), and the number of the paging occasion slots may also be indicated by the system messages; the paging occasion and the Synchronization Signal Block (SSB) may be in a Frequency-Division Multiplexing (FDM) or Time-Division Multiplexing (TDM) relationship.

Specifically, a Physical Downlink Control Channel (PDCCH) scrambled by a paging message (P-RNTI) may be used to indicate scheduling resource information. Wherein, the P-RNTI only exists in certain time slots of certain subframes in a specific radio frame on the PDCCH channel, the specific radio frame is PF, and the time slots are PO. For the UE using Discontinuous Reception (DRX for short), the base station can acquire the required paging message only by monitoring a PO in the paging DRX cycle, and the base station indicates the cycle and paging occasion for sending the paging message through the system message. And the UE determines the paging occasion to receive the paging message according to the ID of the UE. The UE only monitors the PDCCH on its PO to acquire the paging message.

Further, the base station may default a paging DRX cycle (default paging cycle, hereinafter referred to as T) and an interval of paging occasions (nB) by using system message configuration parameters. The value range of T may be 32, 64, 128, 256 radio frames, but is not limited to these values. If the paging cycle allocated according to the high-level signaling of the UE is smaller than the T value, using the smaller value as the paging DRX cycle; the interval nB of the paging occasion may be selected from: 4T, 2T, 1/2T, 1/4T, 1/8T, 1/16T, 1/32T, but is not limited to these values, which actually indicate the number of POs within a single paging DRX cycle.

Further, the UE may determine, through T and nB, a parameter N ═ min (T, nB), which represents the number of PFs included within a single paging DRX cycle; the parameter Ns, which represents the number of POs contained in each PF, can also be determined by T and nB as max (1, nB/T).

Further, the ID of the UE may be calculated based on the formula UE _ ID — IMSI mod 1024, where an International Mobile Subscriber Identity (IMSI) is given in the form of a sequence of integers Integer (0 … 9). The UE may determine the PF or PO to listen to according to its ID by the following formula:

PF to be monitored: SFN mod T ═ T div N (UE _ ID mod N);

PO to be monitored: i _ s ═ floor (UE _ ID/N) mod Ns;

wherein SFN is system frame number (system frame number); the floor function is a down rounding function; mod is the remainder operation.

Further, in the LTE system, several downlink subframes are generally fixed for determining the PO.

For the System message that is periodically broadcasted, each SIB except the System message Block 1 (SIB 1) is carried by a System message (SI message). Each SIB can be carried by only one SI message, and each SI message is transmitted in only one SI window (SI-windows).

Specifically, the SI messages correspond to SI windows one to one, and for an SI window, only the corresponding SI message can be sent in the SI window, but other SI messages cannot be sent; the SI windows are immediately adjacent (if adjacent), neither overlap nor have gaps; the lengths of SI windows of all SI messages are the same; the periods of different SI messages are independent of each other.

Since NR supports a plurality of subcarrier spacings, the number of slots and the slot length contained in one subframe depend on the size of the subcarrier spacing, for example:

for a subcarrier spacing scenario of 15kHZ, one subframe may contain 1 slot;

for a subcarrier spacing scenario of 30kHZ, one subframe may contain 2 slots;

for a subcarrier spacing scenario of 60kHZ, one subframe may contain 4 slots;

for a subcarrier spacing scenario of 120kHZ, one subframe may contain 8 slots.

Therefore, according to the sequence n of the System Information (SI for short) appearing in the scheduling Information list, the start frame and the start time slot of each System Information window (SI window for short) can be determined according to the following formula:

characteristic value corresponding to nth SI message: x ═ n-1 × w;

the initial frame of the SI window meets SFN% T floor (x/M);

the starting slot of the SI window is # a, where a ═ x% M. Where w is the duration of the SI window and M is the number of timeslots contained in a radio frame. For example, in a 15kHZ subcarrier spacing scenario, M is 10; m is 20 in a 30kHZ subcarrier spacing scenario; m is 40 in a 60kHZ subcarrier spacing scenario; m is 80 in the 120kHZ subcarrier spacing scenario.

In the NR scenario of the 5G system, due to the influence of multiple beams, the configuration and monitoring scheme of the existing common search space designed for the LTE system is no longer applicable, and the prior art does not provide an effective overall design scheme of the common search space applicable to the 5G multiple-beam scenario.

In order to solve the above technical problem, in an embodiment of the present invention, on one hand, an overall configuration logic of a common search space is defined at a base station side to determine an opportunity for each beam to transmit a paging message or a system message broadcasted periodically; on the other hand, the needed parameter information is indicated to the UE through the system message, so that the UE side can determine the message sending timing of the PDCCH of paging or periodic broadcast that needs to be monitored according to the selected SSB (beam where the corresponding UE resides), thereby monitoring the PDCCH on the corresponding paging timing slot or periodic broadcast system information timing slot to acquire the corresponding scheduling resource information.

Specifically, on the base station side, an embodiment of the present invention provides a method for configuring a common search space, including: determining a type of the common search space; and determining a parameter set according to the type of the common search space, wherein the parameter set is used for indicating the time for transmitting the control message on the corresponding common search space by each of the plurality of beams.

Those skilled in the art understand that the scheme of the embodiment of the present invention can better adapt to a multi-beam scene of an NR system, so that on the premise of saving signaling overhead of a network, a control message is sent on a corresponding beam according to a message sending opportunity indicated by the parameter set, so as to be obtained by a user equipment as needed.

Further, the parameter set is associated with the type of the common search space, so as to adjust the types and/or specific values of elements included in the parameter set according to the applicable scenarios of different types of common search spaces, so that the user equipment can accurately determine the listening time according to the type of the control message (corresponding to the type of the common search space and also corresponding to different application scenarios) that needs to be acquired.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 1 is a flowchart of a configuration method of a common search space according to an embodiment of the present invention. The scheme of the embodiment can be applied to the network side, such as performed by a base station on the network side. The scheme of the embodiment can be applied to a 5G multi-beam scene, for example, the implementation of paging and periodic broadcast system information in the 5G multi-beam scene can be supported.

Specifically, in this embodiment, the method for configuring the common search space may include the following steps:

step S101, determining the type of the common search space.

Step S102, determining a parameter set according to the type of the common search space, wherein the parameter set is used for indicating the time for sending the control message on the corresponding common search space by each of the plurality of beams.

More specifically, the types of the common search space may include: a common search space for paging; a common search space for periodic broadcast System Information, which may refer to periodic broadcast System Information Other than System Information Block 1 (SIB 1), such as Other System Information (OSI). For example, the scheme of the present embodiment can be applied to a scenario in which a common search space for OSI is configured.

As a non-limiting example, when the type of the common search space is a common search space for paging, the parameter set may include a location parameter of a paging occasion slot, and a mapping density of SSBs and the paging occasion slot, where the SSBs correspond to beams one to one.

Specifically, the base station may transmit the paging message at the paging occasion slot. The paging message may be a control message for paging, that is, resource information for scheduling paging.

More specifically, the downlink slot (also referred to as a paging slot) refers to a starting slot in which all beams transmit paging control information (i.e., the paging message). Different beams may transmit different paging control information, i.e. the beams may correspond to the paging control information one to one.

Further, the paging occasion slot refers to a time domain position where one beam transmits paging control information, and the time domain position may be in a slot granularity or an OFDM symbol granularity.

As a non-limiting example, the paging occasion may include a plurality of paging occasion slots, and the paging occasion slots may correspond to one-to-one beams, or a plurality of beams may correspond to one paging occasion slot, or one beam may correspond to a plurality of paging occasion slots. Further, for more contents of the paging occasions and the paging occasion slots, reference may be made to the related description in the latest development of the aforementioned paging research, which is not repeated herein.

Further, the location parameter of the paging occasion slot may be used to indicate the location of the paging occasion slot in the time domain.

In a preferred example, the location parameter of the paging occasion slot may include at least one of: the offset of the downlink time slot of the paging occasion time slot relative to the position of the last SSB transmission in an SSB burst set (burst set), and the starting symbol of the paging occasion time slot in the downlink time slot.

The downlink timeslot and the SSB burst set may be designed in a TDM manner.

For example, an available downlink timeslot offset from a slot (slot) or symbol (symbol) of a last actually transmitted SSB in the SSB burst set by the offset position may be used as the downlink timeslot where the paging occasion slot is located.

Further, the available downlink time slots may include downlink time slots other than the time slots for transmitting the SSBs and the SIB1, and may also include downlink time slots other than the downlink time slots reserved for other purposes.

Preferably, the offset may be in a unit of a slot, or may also be in a unit of a symbol.

Wherein the SSB burst set and the locations of the SSBs included therein may be predetermined by a protocol.

Preferably, the offset may be 1 timeslot, or a person skilled in the art may also adjust its specific value as needed, so as not to offset the SSB burst set too far (i.e., the time difference between the SSB and the downlink subframe for paging cannot be too long), so as to ensure that the beam sweeping for the SSB and paging can be conveniently and quickly completed during beam sweeping.

Further, the starting symbol of the paging occasion slot in the downlink slot may be used to indicate the starting position of the paging occasion slot corresponding to the SSB 0.

For the 15KHZ scenario, a downlink subframe includes a slot, and the starting symbol of the paging occasion slot in the downlink subframe is the starting symbol of the slot. Wherein, a slot may include 14 symbols from 1 st to 14 th, and the starting symbol may be any symbol in the slot. For example, the starting symbol may be the 2 nd symbol.

Thereby, the starting position of the paging occasion slot in the time domain may be indicated by the set of parameters. And, the paging occasion slots corresponding to different beams may be different.

Further, the parameter set may further include: the duration (duration) of the paging occasion slot and the duration of a Control Resource Set (CORESET for short) of the Remaining Minimum System Information RMSI (RMSI). Those skilled in the art will appreciate that since the duration of the set of control resources of the RMSI is predetermined by the protocol and indicated by the system information (also referred to as system messages) (e.g., may be 1, 2, or 3 slots), this parameter may effectively indicate the duration of the paging occasion slot.

For example, the duration of the paging occasion slot may be the length of the duration of the control resource set of one RMSI. For another example, the duration of the paging occasion slot may also be the length of the duration of the control resource sets of two RMSIs. Further embodiments may be modified as required by those skilled in the art, and are not described herein.

As a variation, the association between the duration of the paging occasion slot and the duration of the set of control resources of the RMSI may also be predetermined by a protocol.

Thus, for each beam, the start position and duration of the corresponding paging occasion slot can be determined according to the parameter set, and the position of the paging occasion slot in the time domain is further determined.

As a variation, in the parameter set, the mapping density of the SSB and the paging occasion slot may be replaced by the number of occasion slots (i.e. the paging occasion slot in this scenario) in the paging DRX cycle. Specifically, the UE may reversely derive the mapping density of the SSBs and the paging occasion slots according to the number of SSBs actually transmitted by the base station and the number of the occasion slots. For example, the SSB to paging occasion slot mapping density can be determined based on a round-up approach.

Or, the mapping density of the SSBs and the paging occasion slots and the number of the occasion slots in the paging DRX cycle may be stored in the parameter set at the same time, so as to improve the calculation accuracy of the UE.

Therefore, the mapping relation between the actually transmitted SSB and the paging occasion time slot can be determined according to the mapping density of the SSB and the paging occasion time slot, so that the UE can determine the paging occasion time slot corresponding to the selected SSB according to the mapping relation, and further monitor the PDCCH in the paging occasion time slot to acquire the required paging message. The paging message may be resource information for scheduling paging.

As another non-limiting example, when the type of the common search space is a common search space for periodically broadcasting system information, the parameter set may include a location parameter of a periodically broadcasting system information opportunity slot, and a mapping density of SSBs and the periodically broadcasting system information opportunity slot, where the SSBs correspond to beams one to one.

Specifically, the base station may transmit OSI at each respective periodic broadcast system information opportunity slot for each beam. Accordingly, the periodic broadcast system information opportunity slot may be an OSI opportunity slot.

More specifically, the location parameter of the periodic broadcast system information occasion slot may be used to indicate the location of the periodic broadcast system information occasion slot in the time domain.

In a preferred example, the location parameter of the slot of the periodic broadcast system information opportunity may include: the starting symbol of the periodical broadcast system information opportunity time slot in the periodical broadcast system information time slot (namely, the downlink time slot) where the periodical broadcast system information opportunity time slot is located.

The periodic broadcast system information timeslot may be a starting position of an SI window (i.e., an SI window), and the specific calculation method may refer to the related description above, which is not repeated herein.

For the 15KHZ subcarrier spacing scenario, a downlink subframe may include a slot, and then the starting symbol of the slot of the periodic broadcast system information opportunity in the downlink subframe is the starting symbol in the slot. Wherein, a slot may include 14 symbols from 1 st to 14 th, and the starting symbol may be any symbol in the slot. For example, the starting symbol may be the 2 nd symbol.

Further, the parameter set may further include: an association between a duration of the periodic broadcast system information opportunity slot and a duration of a control resource set of the RMSI. Those skilled in the art will appreciate that since the duration of the set of control resources of the RMSI is predetermined by the protocol and indicated by the system information (e.g., may be 1, 2, or 3 slots), this parameter may effectively indicate the duration of the slot of the periodic broadcast system information opportunity.

For example, the duration of the slot of the periodic broadcast system information opportunity may be the length of the duration of a set of control resources of one RMSI. For another example, the duration of the slot of the periodic broadcast system information opportunity may also be the length of the duration of the control resource sets of two RMSIs. Further embodiments may be modified as required by those skilled in the art, and are not described herein.

As a variation, the association relationship between the duration of the slot of the periodic broadcast system information opportunity and the duration of the set of control resources of the RMSI may also be predetermined by a protocol.

Thus, for each beam, the start position and duration of the corresponding periodic broadcast system information opportunity slot may be determined from the parameter set, thereby determining the position of the periodic broadcast system information opportunity slot in the time domain.

As a variation, in the parameter set, the parameter of the mapping density of the SSBs and the slots of the periodic broadcast system information occasions may be omitted. Specifically, the UE may inversely derive the mapping density of the SSBs and the slots of the periodic broadcast system information occasions according to the number of SSBs actually transmitted by the base station and the number of SI windows determined by calculation. For example, the mapping density of the SSBs to the slots of the periodic broadcast system information occasions may be determined based on a round-up approach.

Therefore, the mapping relationship between the actually transmitted SSB and the periodic broadcast system information opportunity time slot can be determined according to the mapping density of the SSB and the periodic broadcast system information opportunity time slot, so that the UE can determine the periodic broadcast system information opportunity time slot corresponding to the selected SSB according to the mapping relationship, and further monitor the PDCCH in the periodic broadcast system information opportunity time slot to acquire the required periodic broadcast system information (also referred to as periodic broadcast control message, i.e. the control message). The periodic broadcast system information may be resource information of scheduling system information.

Those skilled in the art will appreciate that since the beams have a one-to-one correspondence with the SSBs, the time at which the paging/OSI downlink control information is transmitted on each beam (i.e., the symbol index of the paging occasion slot/OSI occasion slot corresponding to the beam on the paging occasion) can be determined based on the SSBs' mapping relationship with the paging occasion slot/OSI occasion slot.

Further, the configuration method according to this embodiment may further include the steps of: and sending the parameter set through a system message so that the UE can perform the monitoring operation of the common search space.

Therefore, by adopting the scheme of the embodiment, the multi-beam scene of the NR system can be better adapted, so that on the premise of reducing the power consumption of the UE, the opportunity time slot corresponding to each beam that can send a control message is determined according to the parameter set, and the common search space is monitored on the opportunity time slot corresponding to the beam that needs to be monitored, so as to obtain the control message.

Fig. 2 is a schematic structural diagram of an apparatus for configuring a common search space according to an embodiment of the present invention. Those skilled in the art understand that the configuration apparatus 2 of the common search space (hereinafter, referred to as the configuration apparatus 2) according to the present embodiment is used to implement the method technical solution described in the above embodiment shown in fig. 1.

Specifically, in this embodiment, the configuration device 2 may include: a first determining module 21, configured to determine a type of the common search space; a second determining module 22, configured to determine a parameter set according to the type of the common search space, where the parameter set is used to indicate an occasion when each of the plurality of beams transmits the control message on the corresponding common search space.

Further, the configuration method 2 may further include: a sending module 23, configured to send the parameter set through a system message.

Further, the types of the common search space may include: a common search space for paging; a common search space for periodic broadcast system information, which refers to periodic broadcast system information other than SIB 1.

Further, when the type of the common search space is a common search space for paging, the parameter set may include a location parameter of a paging occasion slot, and a mapping density of SSBs and the paging occasion slot; when the type of the common search space is a common search space for periodically broadcasting system information, the parameter set may include a location parameter of a time slot of a periodic broadcast system information opportunity, and a mapping density of SSBs and the time slot of the periodic broadcast system information opportunity, where the SSBs correspond to beams one to one.

Further, the location parameter of the paging occasion slot may include at least one of: the offset of the downlink time slot of the paging occasion time slot relative to the position of the last SSB transmission in the SSB burst set, and the starting symbol of the paging occasion time slot in the downlink time slot; the location parameter of the slot of the periodic broadcast system information opportunity may include: and the starting symbol of the periodical broadcasting system information opportunity time slot in the periodical broadcasting system information time slot.

Further, the parameter set may further include: an association between a duration of the paging occasion slot or periodic broadcast system information occasion slot and a duration of a set of control resources of the RMSI.

Further, when the type of the common search space is a common search space for paging, the parameter set may further include: a paging DRX cycle and a number of opportunity slots within the paging DRX cycle.

For more details on the operation principle and the operation mode of the configuration apparatus 2, reference may be made to the description in fig. 1, and details are not repeated here.

Fig. 3 is a flowchart of a listening method of a common search space according to an embodiment of the present invention. The scheme of the embodiment can be applied to the user equipment side, such as performed by user equipment (UE for short). The scheme of the embodiment can be applied to a 5G multi-beam scene, for example, can support the implementation of listening paging and periodic broadcast system information in the 5G multi-beam scene.

Specifically, in this embodiment, the method for monitoring the common search space may include the following steps:

step S201, receiving a parameter set, where the parameter set is used to indicate timings of a plurality of beams to transmit a control message on a corresponding common search space.

Step S202, determining the time slot of the opportunity for sending the control message on each beam according to the parameter set.

Step S203, monitor the common search space in the time slot corresponding to the beam to be monitored, so as to obtain the control message sent on the beam.

More specifically, the set of parameters may be received via a system message.

Further, the parameter set may be determined and transmitted by the base station based on the technical solution of the method shown in fig. 1, and the common search space pointed by the parameter set may also be configured by the base station based on the technical solution of the method shown in fig. 1.

Further, the common search space may include: a common search space for paging; a common search space for periodic broadcast system information, which refers to periodic broadcast system information other than SIB 1.

As a non-limiting example, when the common search space is a common search space for paging, the parameter set may include a location parameter of a paging occasion slot, and a mapping density of SSBs and the paging occasion slot, where the SSBs correspond to beams one to one.

Specifically, the location parameter of the paging occasion slot may include at least one of: the offset of the downlink time slot of the paging occasion time slot relative to the position of the last SSB transmission in the SSB burst set, and the starting symbol of the paging occasion time slot in the downlink time slot.

Further, when the common search space is a common search space for paging, the parameter set may further include: a paging DRX cycle and a number of opportunity slots within the paging DRX cycle.

Further, for the explanation of the nouns involved in the present embodiment, reference may be made to the related description in fig. 1, which is not repeated herein.

In a preferred example, referring to fig. 4, the step S202 may include the following steps:

step S2021, monitoring the public search space according to the minimum value of the paging DRX period indicated by the system message and the paging period indicated by the high-level signaling.

Step S2022, determining the paging occasion slot associated with each beam according to the parameter set and the duration of the paging occasion slot, where the duration of the paging occasion slot is determined according to the association relationship between the duration of the paging occasion slot and the duration of the control resource set of the RMSI.

Specifically, the minimum value of the paging DRX cycle and the paging cycle may be taken as the value of the aforementioned T, and thus the number of the paging occasions is determined according to the aforementioned formula in combination with nB to monitor the common search space.

More specifically, the association between the duration of the paging occasion slot and the duration of the set of control resources of the RMSI may be determined based on the set of parameters, or may be predetermined by a protocol.

Further, the step S2022 may include the steps of: determining the mapping relation between the SSB and the paging occasion time slot according to the mapping density of the SSB and the paging occasion time slot; and determining the paging occasion time slot which is respectively associated with the SSB which is actually transmitted according to the mapping relation between the SSB and the paging occasion time slot.

For example, when the mapping density of the SSBs to the paging occasion slots is N and N is 1, the actually transmitted SSBs and the paging occasion slots may be in a one-to-one mapping relationship. Thus, the number of paging occasion slots is determined by the number of SSBs actually transmitted.

For another example, when the mapping density of the SSBs to paging occasion slots is N and N >1, N actually transmitted SSBs may be mapped to one paging occasion slot. Thus, the number of paging occasion slots is determined by the number of SSBs M and N actually transmitted. The formula ceil can be summarized as M/N, where ceil is the number of paging occasion slots.

For another example, when the mapping density of the SSBs to paging occasion slots is N and N <1, each actually transmitted SSB may be mapped to 1/N paging occasion slots consecutively. Thus, the number of paging occasion slots is determined by the number of SSBs M and N actually transmitted. The formula ceil can be summarized as M/N, where ceil is the number of paging occasion slots.

When the parameter set does not configure a specific value of the SSB to paging occasion slot mapping density (including no mapping density indicating the SSB to paging occasion slot), the mapping density N may be set to 1 by default. Of course, those skilled in the art can adjust the default value of the mapping density as needed, which is not described herein.

As another non-limiting example, when the common search space is a common search space for periodic broadcasting, the parameter set may include a location parameter of a periodic broadcast system information opportunity slot, and a mapping density of SSBs and the periodic broadcast system information opportunity slot, where the SSBs correspond to beams one-to-one.

Specifically, the location parameter of the slot of the periodic broadcast system information opportunity may include: the starting symbol of the periodical broadcast system information opportunity time slot in the periodical broadcast system information time slot (namely, downlink time slot) where the periodical broadcast system information opportunity time slot is located.

Further, the periodic broadcast system information slot refers to a starting slot in which all beams transmit periodic broadcast system information.

Further, the periodic broadcast system information opportunity slot refers to a time domain position of a beam transmitting system information control information (in this embodiment, the periodic broadcast system information), and the time domain position may be in a slot granularity or an OFDM symbol granularity.

In a preferred example, referring to fig. 5, the step S202 may include the following steps:

step S2023, determining a start frame and a start time slot of each SI window according to an order of occurrence of related indication information of the periodic broadcast system information in the scheduling information list, a period of the periodic broadcast system information, and a system information window (referred to as SI window for short).

Step S2024, monitoring the common search space according to the period of the periodic broadcast system information indicated by the system message.

Step S2025, determining the periodic broadcast system information time slots respectively associated with each beam according to the parameter set and the duration of the periodic broadcast system information time slots, where the duration of the periodic broadcast system information time slots is determined according to the association relationship between the duration of the periodic broadcast system information time slots and the duration of the control resource set of the RMSI.

Specifically, as to the specific calculation manner of the step S2023, reference may be made to the related description of the determination method of the SI window in the LTE system, which is not repeated herein.

More specifically, the association relationship between the duration of the periodic broadcast system information opportunity slot and the duration of the set of control resources of the RMSI may be indicated by the set of parameters, or may be predetermined by a protocol.

Further, the step S2024 may include the steps of: determining the mapping relation between the SSB and the time slot of the periodic broadcast system information opportunity according to the mapping density of the SSB and the time slot of the periodic broadcast system information opportunity; and determining the periodic broadcast system information opportunity time slots respectively associated with the actually transmitted SSBs according to the mapping relation between the SSBs and the periodic broadcast system information opportunity time slots.

For example, when the mapping density of the SSBs and the periodic broadcast system information opportunity slots is N and N is 1, the actually transmitted SSBs and the periodic broadcast system information opportunity slots may be in a one-to-one mapping relationship. Thus, the number of periodic broadcast system information opportunity slots is determined by the number of SSBs actually transmitted.

For another example, when the mapping density of the SSBs to the periodic broadcast system information opportunity slots is N and N >1, N actually transmitted SSBs may be mapped onto one periodic broadcast system information opportunity slot. Thus, the number of the periodic broadcast system information opportunity slots is determined by the number of the actually transmitted SSBs M and N. The formula ceil ═ M/N can be summarized, where ceil is the number of slots of the periodic broadcast system information opportunities.

For another example, when the mapping density of the SSBs and the timeslots of the periodic broadcast system information opportunities is N and N <1, each actually transmitted SSB may be continuously mapped to 1/N timeslots of the periodic broadcast system information opportunities. Thus, the number of the periodic broadcast system information opportunity slots is determined by the number of the actually transmitted SSBs M and N. The formula ceil ═ M/N can be summarized, where ceil is the number of slots of the periodic broadcast system information opportunities.

When the parameter set does not configure a specific value of the mapping density of the SSB and the periodic broadcast system information occasion slot (including a mapping density that does not indicate the SSB and the periodic broadcast system information occasion slot), the mapping density N may be set to 1 by default. Of course, those skilled in the art can adjust the default value of the mapping density as needed, which is not described herein.

Thus, by adopting the scheme of this embodiment, the multi-beam scene of the NR system can be better adapted, so that on the premise of reducing the power consumption of the user equipment (UE for short), the opportunity time slot corresponding to each beam that can send a message is determined according to the parameter set, and then the common search space is monitored on the opportunity time slot corresponding to the beam that needs to be monitored, so as to obtain the message.

Fig. 6 is a schematic structural diagram of a listening device of a common search space according to an embodiment of the present invention. Those skilled in the art understand that the listening device 6 (hereinafter, referred to as the listening device 6) in the common search space according to this embodiment is used to implement the method technical solutions described in the embodiments shown in fig. 3 to fig. 5.

Specifically, in this embodiment, the monitoring apparatus 6 may include: a receiving module 61, configured to receive a parameter set, where the parameter set is used to indicate an occasion when each of a plurality of beams transmits a control message on a corresponding common search space; a determining module 62, configured to determine, according to the parameter set, an opportunity slot for sending a control message on each beam; a monitoring module 63, configured to monitor the common search space in an opportunity time slot corresponding to a beam that needs to be monitored, so as to obtain a control message sent on the beam.

More specifically, the set of parameters may be received via a system message.

Further, when the common search space is a common search space for paging, the parameter set may include a location parameter of a paging occasion slot, a mapping density of SSBs and the paging occasion slot; when the common search space is a common search space for periodic broadcast, the parameter set may include a location parameter of a slot of a periodic broadcast system information opportunity, and a mapping density of SSBs and the slot of the periodic broadcast system information opportunity, where the SSBs correspond to beams one to one.

As a non-limiting example, when the common search space is a common search space for paging, the opportunity slot is a paging opportunity slot, and the determining module 62 may include: the first determining submodule 621 is configured to monitor the common search space according to a minimum value of a paging DRX cycle indicated by the system message and a paging cycle indicated by the high-level signaling; a second determining sub-module 622, configured to determine, according to the parameter set and the duration of the paging occasion slot, the paging occasion slot associated with each beam, where the duration of the paging occasion slot is determined according to an association relationship between the duration of the paging occasion slot and a duration of a control resource set of the RMSI.

Further, the second determining submodule 622 may include: a first determining unit 6221, configured to determine a mapping relationship between the SSB and the paging occasion slot according to the mapping density between the SSB and the paging occasion slot; a second determining unit 6222, configured to determine paging occasion slots respectively associated with actually transmitted SSBs according to the mapping relationship between the SSBs and the paging occasion slots.

As another non-limiting example, when the type of the common search space is a common search space for periodic broadcasting, the opportunity slot is a periodic broadcasting system information opportunity slot, and the determining module 62 may include: a third determining sub-module 623, configured to determine a start frame and a start time slot of each system information window according to an order in which relevant indication information of the periodic broadcast system information appears in the scheduling information list, a period of the periodic broadcast system information, and the system information window; a monitoring submodule 624, configured to monitor the common search space according to a period of the periodic broadcast system information indicated by the system message; a fourth determining sub-module 625, configured to determine, according to the parameter set and the duration of the periodic broadcast system information opportunity time slot, the periodic broadcast system information opportunity time slot associated with each beam, where the duration of the periodic broadcast system information opportunity time slot is determined according to an association relationship between the duration of the periodic broadcast system information opportunity time slot and the duration of the control resource set of the RMSI.

Further, the fourth determination submodule 625 may include: a third determining unit 6251, configured to determine a mapping relationship between the SSB and the timeslot at the time of the periodic broadcast system information according to the mapping density between the SSB and the timeslot at the time of the periodic broadcast system information; a fourth determining unit 6252, configured to determine, according to the mapping relationship between the SSBs and the periodic broadcast system information opportunity slots, the periodic broadcast system information opportunity slots respectively associated with the actually transmitted SSBs.

Further, the association relationship between the duration of the paging occasion slot or the periodic broadcast system information occasion slot and the duration of the control resource set of the RMSI may be indicated by the parameter set, or the association relationship between the duration of the paging occasion slot or the periodic broadcast system information occasion slot and the duration of the control resource set of the RMSI may also be predetermined by a protocol.

Further, when the first determining unit 6221 or the third determining unit 6251 determines the corresponding mapping relationship, and when the mapping density is 1, it may determine that the actually transmitted SSB is mapped to the paging occasion slot or the periodic broadcast system information occasion slot one to one; when the mapping density is N and N >1, it may be determined that N actually transmitted SSBs are mapped to one paging occasion slot or periodic broadcast system information occasion slot; when the mapping density is N and N <1, it may be determined that each actually transmitted SSB is consecutively mapped to 1/N paging occasion slots or periodic broadcast system information occasion slots. Wherein the mapping density is defaulted to N-1 when the parameter set is not configured with a value of the mapping density.

For more contents of the operation principle and the operation mode of the monitoring device 6, reference may be made to the related descriptions in fig. 3 to fig. 5, which are not described herein again.

In a typical application scenario, referring to fig. 7, the present example may be adapted to a scenario where the UE listens for pages.

Specifically, assume that the cycle of the SSB burst set 71 (which may be referred to as the SSB burst set cycle) is 20ms, the paging DRX cycle T is 32 (i.e., 320ms), and the base station pre-configures nB ═ 1/4) T ═ 8, thereby determining 8 paging occasions 72 (i.e., PO72) in each paging DRX cycle. Accordingly, there may be one PO72 configured for every 2 SSB burst set periods.

More specifically, from the set of parameters, it can be determined that the PO72 is offset by 1 slot from the slot in which the SSB of the last actual transmission (i.e., the last SSB transmission) in the set of SSB bursts 71 is located. I.e. the offset is 1 slot.

Further, the duration of the paging occasion slot may be determined to be the length of the duration of one set of RMSI control resources according to the set of parameters. According to protocol specifications, if the duration of the set of RMSI control resources is 2 symbols, then the duration of the paging occasion slot may be determined to be 2 symbols.

Assuming the scenario is that the subcarrier spacing is 15KHZ, it can be determined from the parameter set that the starting symbol of the first SSB mapped to the paging occasion slot starts from the 2 nd symbol. That is, the starting symbol of the paging occasion slot in the downlink slot is the 2 nd symbol of the downlink slot.

Further, according to the parameter set, the mapping density (density) of the SSB and the paging occasion slot may be determined to be 2. It can thus be determined that every 2 SSBs are mapped to a paging occasion slot.

Thus, the positions in the time domain of the paging occasions that all beams need to transmit (i.e. the positions of all paging occasion slots) can be determined.

Further, assuming that the number of SSBs actually transmitted by the base station is 8 obtained by RMSI, a total of 4 paging occasion slots are required.

Based on the above operation, according to the radio frame and the timeslot where the last actually transmitted SSB of the SSB burst set 71 is located, and in combination with the offset (1 timeslot) from the PO72 to the SSB burst set 71, the timeslot 73 where the PO72 is transmitted (i.e., the downlink timeslot) can be determined, and the locations of all the paging occasion timeslots are determined according to the locations of the start symbols indicated by the parameter sets.

Specifically, in conjunction with fig. 7, of the 4 paging occasion slots, paging occasion slot 1 is located at symbol 2 and symbol 3 of the slot 73; paging occasion slot 2 is located at symbol 4 and symbol 5 of said slot 73; paging occasion slot 3 is located at symbol 6 and symbol 7 of said slot 73; paging occasion slot 4 is located at symbol 8 and symbol 9 of said slot 73. Wherein the slot 73 comprises 14 symbols from symbol 0 to symbol 13.

Further, in response to that the base station actually transmits 8 SSBs, it may be determined according to the mapping relationship between the actually transmitted SSBs and the paging occasion slot: SSB0/1 maps to paging occasion slot 1; SSB2/3 maps to paging occasion slot 2; SSB4/5 maps to paging occasion slot 3; SSBs 6/7 map to paging occasion slot 4.

For the UE residing on the corresponding SSB, the position of the PO to be monitored (i.e. the corresponding paging occasion slot) can be determined according to the ID of the UE, and then the PDCCH is monitored on the symbol index specified by the paging occasion slot mapped by the corresponding SSB in the determined PO, so as to obtain the resource information of the scheduling paging.

For example, for a UE camping on the SSB3, it can be determined that a PO to be monitored is located in the paging occasion slot 2 according to its ID, and then the PDCCH is monitored on symbol 4 and symbol 5 to obtain a corresponding paging control message.

In another typical application scenario, referring to fig. 8, the present example may be adapted for a UE to listen to periodic broadcast system information.

Specifically, assume that the SI1 period is 160ms, the SI2 period is 320ms, and the length (i.e., duration) of the SI window (including the SI1 window 81 and the SI2 window 82) is 5 ms.

Therefore, the radio frame and the subframe where each SI is scheduled can be determined, and taking the subcarrier spacing of 15kHz as an example, M is 10:

for SI1, the SI message corresponds to a feature value x ═ 1-1) #5 ═ 0; start frame of SI1 window 81: SFN% 16 ═ FLOOR (x/10) ═ 0; starting time slot of SI1 window 81: x% 10 ═ 0.

For SI2, the SI message corresponds to a feature value x ═ 2-1 (# 5 ═ 5; start frame of SI2 window 82: SFN% 32 ═ FLOOR (x/10) ═ 0; start slot of SI2 window 83: x% 10 ═ 5.

Thus, the arrangement of the SI1 window 81 and the SI2 window 82 in the time domain shown in fig. 8 can be obtained.

Since the duration of the SI window is 5ms, taking the subcarrier spacing of 15kHz as an example in this scenario, 5 time slots 83 are required for each SI window.

According to the reference set, for each periodic broadcast system information opportunity slot, it may be determined that the starting symbol index of the periodic broadcast system information opportunity slot in the periodic broadcast system information slot where the periodic broadcast system information opportunity slot is located is the 2 nd symbol, and the number of the PDCCHs that can be monitored by each beam is 5 slots 83.

Further, the duration of the periodic broadcast system information occasion slots (e.g., OSI occasion slots) can be determined from the set of parameters to be the length of the duration of one set of RMSI control resources. According to protocol specifications, the duration of the set of RMSI control resources is 2 symbols, then the duration of the OSI occasion slot can be determined to be 2 symbols.

Further, from the set of parameters, it can be determined that the starting symbol of the first SSB mapping to an OSI occasion slot starts with the 2 nd symbol.

Further, a mapping density (density) of SSBs to OSI occasion slots can be determined to be 2 from the set of parameters. It can thus be determined that every 2 SSBs map to an OSI opportunity slot.

Further, assuming that the number of SSBs actually transmitted by the base station is 8 obtained by RMSI, a total of 4 OSI opportunity slots are required.

Based on the above operation, the start frame and the start time slot of each SI scheduling occurrence are determined according to the SI scheduling period indicated by the system message, the sequence n of the SI appearing in the scheduling information list, and the length of the SI window, and the positions of all OSI opportunity time slots are determined according to the configured position of the start symbol of each time slot.

Specifically, in connection with fig. 8, among the 4 OSI occasion slots, OSI occasion slot 1 is located at symbol 2 and symbol 3 of the slot 83; OSI occasion slot 2 is located at symbol 4 and symbol 5 of said slot 83; OSI occasion slot 3 is located at symbol 6 and symbol 7 of said slot 83; OSI occasion slot 4 is located at symbol 8 and symbol 9 of said slot 83. Wherein the slot 83 includes 14 symbols from symbol 0 to symbol 13.

Further, in response to the base station transmitting 8 SSBs, it can be determined according to the mapping relationship between the actually transmitted SSBs and the OSI opportunity slots: SSB0/1 maps to OSI opportunity slot 1; SSB2/3 maps to OSI opportunity slot 2; SSB4/5 maps to OSI opportunity slot 3; SSB6/7 maps to OSI opportunity slot 4.

For a UE residing on a corresponding SSB, the PDCCH may be monitored according to a symbol index specified by an OSI opportunity slot mapped by the corresponding SSB to obtain resource information of a scheduled SI.

For example, for a UE residing on the SSB6, the position of the SI window (for example, SI2 window 82) where the SI is located may be determined according to the sequence of the SI that needs to be received in the SI scheduling information list and a corresponding formula, and then the OSI opportunity slot that needs to be monitored is determined to be OSI opportunity slot 4 according to the SSB6 where the UE resides, that is, the PDCCH needs to be monitored on symbol 8 and symbol 9 of the SI2 window 82, so as to obtain a corresponding SI message.

Further, the embodiment of the present invention further discloses a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the method technical solutions described in the embodiments shown in fig. 1, fig. 3 to fig. 5 are executed. Preferably, the storage medium may include a computer-readable storage medium such as a non-volatile (non-volatile) memory or a non-transitory (non-transient) memory. The storage medium may include ROM, RAM, magnetic or optical disks, etc.

Further, the embodiment of the present invention further discloses a base station, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the technical solution of the method in the embodiment shown in fig. 1 when executing the computer instructions.

Further, an embodiment of the present invention further discloses a terminal, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the method technical solution described in the embodiments shown in fig. 3 to 5 when running the computer instruction. Preferably, the terminal may be the User Equipment (UE).

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for configuring a common search space, comprising:

determining a type of the common search space;

determining a parameter set according to the type of the common search space, wherein the parameter set is used for indicating the time for each of a plurality of beams to transmit a control message on the corresponding common search space;

wherein the types of the common search space include: a common search space for paging;

the determining a set of parameters according to the type of the common search space comprises: when the type of the public search space is a public search space for paging, the parameter set comprises a location parameter of a paging occasion slot, a mapping density of an SSB and the paging occasion slot, a paging DRX period and an association relation between the duration of the paging occasion slot and the duration of a control resource set of an RMSI;

wherein the set of parameters is configured to indicate timings at which the plurality of beams each transmit the control message on the corresponding common search space, including: when the type of the common search space is a common search space for paging, the minimum value of a paging DRX cycle in the parameter set and a paging cycle indicated by a high-level signaling is used to indicate to monitor the common search space, the parameter set and the duration of the paging occasion slot determined according to the parameter set are used to determine the paging occasion slot associated with each beam, wherein the duration of the paging occasion slot is determined according to the association relationship between the duration of the paging occasion slot indicated in the parameter set and the duration of a control resource set of RMSI.

2. The configuration method according to claim 1, further comprising:

the parameter set is sent via a system message.

3. The configuration method of claim 1, wherein the type of the common search space comprises: a common search space for periodic broadcast system information, which refers to periodic broadcast system information other than SIB 1.

4. The method of claim 3, wherein said determining a set of parameters according to a type of the common search space comprises:

when the type of the common search space is a common search space for periodically broadcasting system information, the parameter set includes a position parameter of a time slot of a periodic broadcast system information opportunity, and the SSB and the mapping density of the time slot of the periodic broadcast system information opportunity, where the SSB and the beam are in one-to-one correspondence.

5. The method of claim 4, wherein the location parameter of the paging occasion slot comprises at least one of: the offset of the downlink time slot of the paging occasion time slot relative to the position of the last SSB transmission in the SSB burst set, and the starting symbol of the paging occasion time slot in the downlink time slot; the position parameters of the time slot of the periodic broadcast system information opportunity comprise: and the starting symbol of the periodical broadcasting system information opportunity time slot in the periodical broadcasting system information time slot.

6. The configuration method according to claim 4 or 5, wherein the parameter set further comprises: an association between a duration of the periodic broadcast system information opportunity slot and a duration of a control resource set of the RMSI.

7. The method of claim 1, wherein when the type of the common search space is a common search space for paging, the set of parameters further comprises: a number of opportunity slots within the paging DRX cycle.

8. An apparatus for configuring a common search space, comprising:

a first determining module for determining a type of the common search space;

a second determining module, configured to determine a parameter set according to a type of the common search space, where the parameter set is used to indicate timings at which the plurality of beams respectively transmit the control message on the corresponding common search space;

when the type of the public search space is a public search space for paging, the parameter set comprises a location parameter of a paging occasion slot, a mapping density of an SSB and the paging occasion slot, a paging DRX period and an association relation between the duration of the paging occasion slot and the duration of a control resource set of an RMSI;

9. A method for monitoring a common search space, comprising:

receiving a set of parameters indicating respective occasions at which a plurality of beams transmit control messages over a corresponding common search space;

determining the time slot of the opportunity for sending the control message on each wave beam according to the parameter set;

monitoring the public search space on a time slot corresponding to a beam needing to be monitored so as to acquire a control message sent on the beam;

wherein the common search space comprises: a common search space for paging;

when the common search space is used for paging, the parameter set comprises a position parameter of a paging occasion time slot, a mapping density of an SSB and the paging occasion time slot, a paging DRX period and an incidence relation between the duration of the paging occasion time slot and the duration of a control resource set of RMSI;

when the common search space is a common search space for paging, the opportunity slot is a paging opportunity slot, and determining the opportunity slot for transmitting the control message on each beam according to the parameter set includes:

monitoring the public search space according to the minimum value in the paging DRX period indicated by the system message and the paging period indicated by the high-level signaling;

and determining the paging occasion time slot associated with each beam according to the parameter set and the duration of the paging occasion time slot, wherein the duration of the paging occasion time slot is determined according to the association relation between the duration of the paging occasion time slot and the duration of a control resource set of the RMSI.

10. Listening method as claimed in claim 9, characterized in that the parameter set is received via a system message.

11. The listening method of claim 9, wherein the common search space comprises: a common search space for periodic broadcast system information, which refers to periodic broadcast system information other than SIB 1.

12. The listening method of claim 11, wherein when the common search space is a common search space for periodically broadcasting system information, the parameter set comprises a location parameter of a slot of a periodic broadcast system information opportunity, and a mapping density of SSBs and slots of the periodic broadcast system information opportunity, wherein SSBs correspond to beams one to one.

13. The listening method of claim 9 wherein the determining the paging occasion slot associated with each beam according to the set of parameters and the duration of the paging occasion slot comprises:

determining the mapping relation between the SSB and the paging occasion time slot according to the mapping density of the SSB and the paging occasion time slot;

and determining the paging occasion time slot which is respectively associated with the SSB which is actually transmitted according to the mapping relation between the SSB and the paging occasion time slot.

14. The listening method of claim 12, wherein when the type of the common search space is a common search space for periodically broadcasting system information, the opportunity slot is a periodically broadcasting system information opportunity slot, and the determining the opportunity slots for transmitting control messages on the respective beams according to the set of parameters comprises:

determining a starting frame and a starting time slot of each system information window according to the sequence of related indication information of the periodic broadcast system information appearing in a scheduling information list, the period of the periodic broadcast system information and the system information window;

monitoring the public search space according to the period of the periodic broadcast system information indicated by the system information;

and determining the periodic broadcast system information opportunity time slot associated with each beam according to the parameter set and the duration of the periodic broadcast system information opportunity time slot, wherein the duration of the periodic broadcast system information opportunity time slot is determined according to the association relationship between the duration of the periodic broadcast system information opportunity time slot and the duration of a control resource set of the RMSI.

15. The listening method of claim 14 wherein said determining the periodic broadcast system information opportunity slots associated with the respective beams according to the parameter set and the duration of the periodic broadcast system information opportunity slots comprises:

determining the mapping relation between the SSB and the time slot of the periodic broadcast system information opportunity according to the mapping density of the SSB and the time slot of the periodic broadcast system information opportunity;

and determining the periodic broadcast system information opportunity time slots respectively associated with the actually transmitted SSBs according to the mapping relation between the SSBs and the periodic broadcast system information opportunity time slots.

16. The listening method according to claim 9 or 14, wherein the association between the duration of the paging occasion slot or periodic broadcast system information occasion slot and the duration of the set of control resources of RMSI is indicated by the set of parameters, or the association between the duration of the paging occasion slot or periodic broadcast system information occasion slot and the duration of the set of control resources of RMSI is predetermined by a protocol.

17. The monitoring method according to claim 13 or 15, wherein the determining the mapping relationship between the SSB and the paging occasion slot or the periodic broadcast system information occasion slot according to the mapping density between the SSB and the paging occasion slot or the periodic broadcast system information occasion slot comprises:

when the mapping density is N and N is 1, the actually transmitted SSB is mapped with the time slot of the paging occasion or the time slot of the periodic broadcast system information one by one;

when the mapping density is N and N is greater than 1, N SSBs actually transmitted are mapped to a paging occasion time slot or a periodic broadcast system information occasion time slot;

when the mapping density is N and N <1, each actually transmitted SSB is continuously mapped to 1/N paging occasion time slots or periodic broadcast system information occasion time slots;

wherein the mapping density is defaulted to N-1 when the parameter set is not configured with a value of the mapping density.

18. The listening method according to claim 12, wherein the location parameter of the paging occasion slot comprises at least one of: the offset of the downlink time slot of the paging occasion time slot relative to the position of the last SSB transmission in the SSB burst set, and the starting symbol of the paging occasion time slot in the downlink time slot; the position parameters of the time slot of the information opportunity of the periodic broadcast system comprise: and the starting symbol of the periodical broadcasting system information opportunity time slot in the periodical broadcasting system information time slot.

19. The listening method of claim 9, wherein when the common search space is a common search space for paging, the set of parameters further comprises: a number of opportunity slots within the paging DRX cycle.

20. An apparatus for listening to a common search space, comprising:

a receiving module, configured to receive a parameter set, where the parameter set is used to indicate timings at which a plurality of beams each transmit a control message on a corresponding common search space;

a determining module, configured to determine, according to the parameter set, an opportunity slot for sending a control message on each beam;

the monitoring module is used for monitoring the public search space on a time slot corresponding to a beam needing to be monitored so as to acquire a control message sent on the beam;

wherein the common search space comprises: a common search space for paging;

when the common search space is a common search space for paging, the opportunity slot is a paging opportunity slot, and the determining module includes: the first determining submodule is used for monitoring the public search space according to the minimum value of the paging DRX period indicated by the system message and the paging period indicated by the high-level signaling; and a second determining submodule, configured to determine, according to the parameter set and the duration of the paging occasion slot, a paging occasion slot associated with each beam, where the duration of the paging occasion slot is determined according to an association relationship between the duration of the paging occasion slot and a duration of a control resource set of the RMSI.

21. A storage medium having a computer program stored thereon, the computer program, when being executed by a processor, performing the steps of the method of any one of claims 1 to 7 or of any one of claims 9 to 19.

22. A base station comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 1 to 7.

23. A terminal comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the method of any of claims 9 to 19.