A method, apparatus, device and storage medium for receiving downlink control information

Abstract

The embodiment of the present disclosure provides a method, device and equipment for receiving downlink control information and a storage medium, which are applied to the technical field of wireless communication. The method for receiving downlink control information comprises the following steps: determining a time slot corresponding to PDCCH overbooking in a span; wherein the span comprises more than one time slot; performing blind detection on a time slot before the time slot corresponding to the PDCCH overbooking in the span, performing blind detection on the time slot corresponding to the PDCCH overbooking in the span, and prohibiting blind detection on a time slot after the time slot corresponding to the PDCCH overbooking in the span. In the embodiment of the present disclosure, when PDCCH overbooking occurs, the user equipment will try to blind detect USS in the time slot at the front position in the span and discard USS in the time slot at the rear position, so that the user equipment can enter the energy saving mode as soon as possible after receiving the PDCCH, and the energy saving capability of the user equipment is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of wireless communication, and particularly relates to a method and apparatus for receiving downlink control information, a device and a storage medium. BACKGROUND

[0002] In the NR (New Radio) protocol, downlink data is carried on a PDSCH (Physical Downlink Shared CHannel), and uplink data is carried on a PUSCH (Physical Uplink Shared CHannel). A base station schedules the PDSCH and the PUSCH through DCI (Downlink Control Information) carried on a PDCCH (Physical Downlink Control CHannel).

[0003] The PDCCH channel includes a CSS (Common Search Space) and a USS (User equipment specific Search Space). The CSS is used to carry cell common control information, groupcast control information, etc., and can also be used to carry UE specific control information. The USS is used to carry UE specific control information.

[0004] In the R15 protocol, PDCCH blind monitoring capability is defined in terms of a single slot as a time unit. Specifically, according to different SCS (SubCarrier spacing), the blind monitoring capability of a UE in a slot is specified. The blind monitoring capability of a UE in a slot includes the maximum number of blind monitoring in the slot and the maximum number of non-overlapping CCEs (control channel elements) in the slot. This definition is applicable to frequencies below 52.6 GHz, and the optional subcarrier bandwidths are 15 KHz, 30 KHz, 60 KHz or 120 KHz. The length of a slot is different for different subcarrier bandwidths, for example, the length of a slot corresponding to a 15 KHz subcarrier bandwidth is 1 ms, the length of a slot corresponding to a 30 KHz subcarrier bandwidth is 0.5 ms, the length of a slot corresponding to a 60 KHz subcarrier bandwidth is 0.25 ms, and so on. As the subcarrier bandwidth increases, the length of the slot decreases. SUMMARY

[0005] Therefore, the present disclosure provides a method and apparatus for receiving downlink control information, a device and a storage medium.

[0006] According to a first aspect, a method for receiving downlink control information is provided, the method comprising:

[0007] determining a time slot corresponding to PDCCH overbooking in a span; wherein the span comprises more than one time slot;

[0008] performing blind decoding on a time slot before the time slot corresponding to PDCCH overbooking in the span, performing blind decoding on the time slot corresponding to PDCCH overbooking in the span, and disabling blind decoding on a time slot after the time slot corresponding to PDCCH overbooking in the span.

[0009] In an embodiment, the determining the time slot corresponding to PDCCH overbooking in the span comprises:

[0010] in response to a sum of PDCCH blind decoding overhead of all user equipment specific search spaces (USSs) on the first M-1 time slots in the span being less than a user equipment intra-span USS blind decoding capability, and a sum of PDCCH blind decoding overhead of all USSs on the first M time slots in the span being greater than or equal to the user equipment intra-span USS blind decoding capability, determining the Mth time slot in the span as the time slot corresponding to PDCCH overbooking;

[0011] wherein M is an integer greater than 1.

[0012] In an embodiment, the user equipment intra-span USS blind decoding capability comprises a difference between a preset user equipment intra-span blind decoding capability and PDCCH blind decoding overhead of a common search space (CSS).

[0013] In an embodiment, the performing blind decoding on the time slot corresponding to PDCCH overbooking in the span comprises:

[0014] in response to a sum of PDCCH blind decoding overhead of all USSs on the first M time slots in the span being greater than a user equipment intra-span USS blind decoding capability, discarding at least one USS on the time slot corresponding to PDCCH overbooking in a descending order of index of the USS.

[0015] In an embodiment, the performing blind decoding on the time slot corresponding to PDCCH overbooking in the span comprises:

[0016] in response to a sum of PDCCH blind decoding overhead of all USSs on the first M time slots in the span being greater than a user equipment intra-span USS blind decoding capability, discarding the USSs on the time slot corresponding to PDCCH overbooking in a descending order of index of the USSs one by one until a sum of PDCCH blind decoding overhead of all remaining USSs on the first M time slots in the span is less than or equal to the user equipment intra-span USS blind decoding capability.

[0017] In an embodiment, the performing blind detection on the time slots corresponding to the PDCCH overbooking in the span comprises:

[0018] performing blind detection on all the USSs in the time slots corresponding to the PDCCH overbooking in the span.

[0019] In an embodiment, the performing blind detection on the time slots corresponding to the PDCCH overbooking in the span comprises:

[0020] performing blind detection on all the USSs in the time slots corresponding to the PDCCH overbooking in the span, in response to a sum of PDCCH blind detection overheads of all the USSs in the first M time slots in the span being equal to a user equipment span-wise USS blind detection capability.

[0021] In an embodiment, the determining the time slots corresponding to the PDCCH overbooking in the span comprises: an index value of the time slots corresponding to the PDCCH overbooking in the span being a set value.

[0022] In an embodiment, the determining the time slots corresponding to the PDCCH overbooking in the span comprises: a ratio of an index value of the time slots corresponding to the PDCCH overbooking in the span to a total number of time slots contained in the span belonging to a set interval.

[0023] According to a second aspect, a device for receiving downlink control information is provided, applied to a user equipment, comprising:

[0024] a determining module configured to determine time slots corresponding to PDCCH overbooking in a span; wherein the span comprises more than one time slot;

[0025] a processing module configured to perform blind detection on time slots before the time slots corresponding to the PDCCH overbooking in the span, perform blind detection on the time slots corresponding to the PDCCH overbooking in the span, and prohibit performing blind detection on time slots after the time slots corresponding to the PDCCH overbooking in the span.

[0026] According to a third aspect, a user equipment is provided, comprising:

[0027] a processor;

[0028] a memory for storing processor-executable instructions;

[0029] wherein the processor is configured to execute the executable instructions in the memory to implement steps of the method for receiving downlink control information.

[0030] According to a third aspect, a non-transitory computer readable storage medium is provided, having stored thereon executable instructions that, when executed by a processor, implement the steps of the method of receiving downlink control information.

[0031] The technical solution provided by the embodiments of the present disclosure can have the following beneficial effects: when PDCCH overbooking occurs, the user equipment can try to blindly detect the USS in the time slots at the front position in the span and discard the USS in the time slots at the rear position, so that the user equipment can enter the energy saving mode as soon as possible after receiving the PDCCH, and the energy saving capability of the user equipment is improved.

[0032] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings illustrated herein are used to provide a further understanding of the embodiments of the present disclosure, constitute a part of the specification, and the schematic embodiments of the embodiments of the present disclosure and their descriptions are used to explain the embodiments of the present disclosure, and do not constitute an improper limitation on the embodiments of the present disclosure. In the drawings:

[0034] The drawings herein are incorporated into the specification and constitute a part of the specification, show the embodiments consistent with the embodiments of the present disclosure, and are used together with the specification to explain the principles of the embodiments of the present disclosure.

[0035] Figure 1 is a flow chart of a method of receiving downlink control information according to an exemplary embodiment;

[0036] Figure 2 is a structural diagram of an apparatus for receiving downlink control information according to an exemplary embodiment;

[0037] Figure 3 is a structural diagram of an apparatus for receiving downlink control information according to an exemplary embodiment. DETAILED DESCRIPTION

[0038] The embodiments of the present disclosure will be further described in combination with the drawings and specific embodiments.

[0039] The exemplary embodiments will be described in detail herein, and examples are shown in the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0040] In a high frequency band (e.g., a frequency band around 60 GHz), in order to cope with phase noise, a larger subcarrier bandwidth, for example, 960 KHz, is usually selected. Since the larger subcarrier bandwidth corresponds to a smaller time length (the time length is the time length of a slot), in the case of a subcarrier bandwidth of 960 KHz, the time length of one slot is 1 / 64 ms, and in such a short time length, the user equipment can not perform blind detection on the PDCCH channel in each slot, and therefore a span PDCCH blind detection mode or a multi-slot span PDCCH blind detection mode can be introduced, wherein one span or multi-slot span includes more than one slot, and in the span PDCCH blind detection mode, the user equipment span-in USS blind detection capability is defined in units of spans, and in the multi-slot span PDCCH blind detection mode, the user equipment span-in USS blind detection capability is defined in units of multi-slot spans.

[0041] One span includes multiple slots, and in one span, there can be USSs on all slots or on part of the slots. In addition, the same index value of the USS can exist in two slots in one span or in more than two slots in one span.

[0042] PDCCH overbooking can occur in one span, and the PDCCH overbooking generally refers to PDCCH overbooking of the USS, which is irrelevant to the CSS (because the CSS is guaranteed by the base station to not have PDCCH overbooking).

[0043] The embodiments of the present disclosure provide a method for receiving downlink control information, which is applied to user equipment. Referring to Figure 1 , Figure 1 A flowchart of a method for receiving downlink control information according to an exemplary embodiment is shown in FIG. 1, and the method includes the following steps. Figure 1

[0044] In step S11, the time slots corresponding to PDCCH overbooking in a span are determined, wherein the span includes more than one slot.

[0045] In step S12, blind detection is performed on the time slots before the time slots corresponding to the PDCCH overbooking in the span, blind detection is performed on the time slots corresponding to the PDCCH overbooking in the span, and blind detection is prohibited on the time slots after the time slots corresponding to the PDCCH overbooking in the span.

[0046] ​In an embodiment, the USS blind decoding capability required by all USSs on all time slots before the time slot corresponding to the PDCCH overbooking in the span is greater than or equal to the user equipment span-wise USS blind decoding capability.

[0047] In an embodiment, the user equipment span-wise USS blind decoding capability comprises a difference between a preset user equipment span-wise blind decoding capability and a user equipment span-wise CSS blind decoding overhead.

[0048] In an embodiment of the present disclosure, when PDCCH overbooking occurs, the user equipment tries to blind decode the USSs on the time slots at the front of the span and discard the USSs on the time slots at the back, so that the user equipment can enter the energy saving mode as early as possible after receiving the PDCCH, and the energy saving capability of the user equipment is improved.

[0049] An embodiment of the present disclosure provides a method for receiving downlink control information, which is applied to a user equipment. The method comprises:

[0050] In response to a sum of PDCCH blind decoding overheads of all USSs on the first M-1 time slots in the span being less than the user equipment span-wise USS blind decoding capability, and the sum of PDCCH blind decoding overheads of all USSs on the first M time slots in the span being greater than or equal to the user equipment span-wise USS blind decoding capability, determining that the Mth time slot in the span is the time slot corresponding to the PDCCH overbooking. The span comprises more than one time slot. M is an integer greater than 1.

[0051] Performing blind decoding on the time slots before the time slot corresponding to the PDCCH overbooking in the span, performing blind decoding on the time slot corresponding to the PDCCH overbooking in the span, and prohibiting blind decoding on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0052] In an embodiment, the span comprises N time slots (slots), and M is a value greater than 1 and less than or equal to N.

[0053] In an embodiment, the user equipment span-wise USS blind decoding capability comprises a difference between a preset user equipment span-wise blind decoding capability and a user equipment span-wise CSS blind decoding overhead.

[0054] For example, the preset user equipment span-wise blind decoding capability is C0, the user equipment span-wise USS blind decoding capability is C1, and the user equipment span-wise CSS blind decoding overhead is C2. Then, C1 is the difference between C0 and C2, i.e., C1=C0-C2.

[0055] In an example, one span comprises N time slots (slots). N is an integer greater than 1. The N time slots are numbered in sequence from 0 to N-1.

[0056] The span contains N slots (numbered from 0 to N-1). USS M represents the USS blind detection overhead of all USSs on the slot M C1 represents the user equipment's span-wise USS blind detection capability.

[0057] When the sum of the PDCCH blind detection overheads of all USSs on the first M-1 slots in the span is less than the user equipment's span-wise USS blind detection capability, and the sum of the PDCCH blind detection overheads of all USSs on the first M slots in the span is greater than the user equipment's span-wise USS blind detection capability, the Mth slot in the span is determined as the time slot corresponding to the PDCCH overbooking. The span contains more than one slot. M is an integer greater than 1. M-1 <C1, and the sum of the PDCCH blind detection overheads of all USSs on the first M slots in the span is greater than the user equipment's span-wise USS blind detection capability, the Mth slot in the span is determined as the time slot corresponding to the PDCCH overbooking. M M The span contains more than one slot. M is an integer greater than 1.

[0058] In the embodiments of the present disclosure, when PDCCH overbooking occurs, the user equipment will try to blind detect the USSs on the time slots at the front of the span, and discard the USSs on the time slots at the back, so that the user equipment can enter the energy saving mode as soon as possible after receiving the PDCCH, and the energy saving capability of the user equipment is improved.

[0059] The present disclosure provides a method for receiving downlink control information, which is applied to a user equipment. The method comprises:

[0060] When the sum of the PDCCH blind detection overheads of all USSs on the first M-1 slots in the span is less than the user equipment's span-wise USS blind detection capability, and the sum of the PDCCH blind detection overheads of all USSs on the first M slots in the span is greater than the user equipment's span-wise USS blind detection capability, the Mth slot in the span is determined as the time slot corresponding to the PDCCH overbooking. The span contains more than one slot. M is an integer greater than 1.

[0061] Blind detection is performed on the time slots before the time slot corresponding to the PDCCH overbooking in the span, blind detection is performed on the time slot corresponding to the PDCCH overbooking in the span, and blind detection is prohibited on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0062] In an embodiment, the blind detection performed on the time slots before the time slot corresponding to the PDCCH overbooking in the span comprises blind detection on all USSs of all time slots before the time slot corresponding to the PDCCH overbooking in the span.

[0063] ​In an embodiment, performing blind detection on the time slots corresponding to the PDCCH overbooking in the span comprises: discarding a set number of USSs on the time slots corresponding to the PDCCH overbooking in the descending order of the indexes of the USSs, and performing blind detection on the remaining USSs on the time slots corresponding to the PDCCH overbooking. The value of the set number is an empirical value to ensure that the sum of the PDCCH blind detection overheads of all the remaining USSs on the first M time slots in the span is less than or equal to the USS blind detection capability of the user equipment in the span after the set number of USSs are discarded.

[0064] In an example, a span contains N slots. N is an integer greater than 1. The N slots are numbered from 0 to N-1.

[0065] Suppose a span contains N slots (numbered from 0 to N-1). The USSs on the slots are denoted as USS0, USS1, …, USSN-1. M The PDCCH blind detection overheads of all the USSs on the slots are denoted as C0, C1, …, CN-1. M C1.

[0066] When USS0+USS1+…+USSN-1 M-1 M >C1, it is determined that the slots corresponding to the PDCCH overbooking in the span are slots M .

[0067] In an example, the set number is 2. The span contains 5 slots. The sum of the PDCCH blind detection overheads of all the USSs on the first 3 slots in the span is less than the USS blind detection capability of the user equipment in the span, and the sum of the PDCCH blind detection overheads of all the USSs on the first 4 slots in the span is greater than the USS blind detection capability of the user equipment in the span. It is determined that the time slots corresponding to the PDCCH overbooking are the 4th slot.

[0068] Blind detection is performed on all the USSs on each of the first 3 slots.

[0069] On the 4th slot, 2 USSs on the time slots corresponding to the PDCCH overbooking are discarded in the descending order of the indexes of the USSs, and blind detection is performed on the remaining USSs on the 4th slot.

[0070] Blind detection is prohibited on the slots after the 4th slot.

[0071] ​In the embodiments of the present disclosure, in response to the sum of PDCCH blind detection overheads of all USSs in the first M-1 time slots in a span being less than the USS blind detection capability of the user equipment in the span, and the sum of PDCCH blind detection overheads of all USSs in the first M time slots in the span being greater than the USS blind detection capability of the user equipment in the span, blind detection is performed on the time slot corresponding to the PDCCH overbooking in the span, and a set number of USSs on the time slot corresponding to the PDCCH overbooking are discarded in descending order of the indexes of the USSs, without determining whether the sum of PDCCH blind detection overheads of all remaining USSs in the first M time slots in the span is less than or equal to the USS blind detection capability of the user equipment in the span, thereby improving processing efficiency.

[0072] The embodiments of the present disclosure provide a method for receiving downlink control information, which is applied to a user equipment. The method comprises:

[0073] In response to the sum of PDCCH blind detection overheads of all USSs in the first M-1 time slots in a span being less than the USS blind detection capability of the user equipment in the span, and the sum of PDCCH blind detection overheads of all USSs in the first M time slots in the span being greater than the USS blind detection capability of the user equipment in the span, it is determined that the Mth time slot in the span is a time slot corresponding to PDCCH overbooking. The span comprises more than one time slot. M is an integer greater than 1.

[0074] Blind detection is performed on the time slot before the time slot corresponding to the PDCCH overbooking in the span, blind detection is performed on the time slot corresponding to the PDCCH overbooking in the span, and blind detection is prohibited on the time slot after the time slot corresponding to the PDCCH overbooking in the span.

[0075] In an embodiment, performing blind detection on the time slot before the time slot corresponding to the PDCCH overbooking in the span comprises performing blind detection on all USSs of all time slots before the time slot corresponding to the PDCCH overbooking in the span.

[0076] In an embodiment, performing blind detection on the time slot corresponding to the PDCCH overbooking in the span comprises sequentially discarding USSs on the time slot corresponding to the PDCCH overbooking in descending order of indexes of the USSs until the sum of PDCCH blind detection overheads of all remaining USSs in the first M time slots in the span is less than or equal to the USS blind detection capability of the user equipment in the span.

[0077] In an example, one span comprises N time slots. N is an integer greater than 1. The N time slots are numbered from 0 to N-1 in sequence.

[0078] Assume that a span contains N slots (numbered from 0 to N-1). USS M represents the USS blind detection overhead of all USSs on slots M C1 represents the user equipment span-internal USS blind detection capability.

[0079] When USS0+USS1+…+USS M-1 <=C1, and when USS0+USS1+…+USS M >C1, it is determined that the time slot corresponding to the PDCCH overbooking is the slot M .

[0080] In an example, a span contains 5 time slots. The sum of the PDCCH blind detection overheads of all USSs on the first 3 time slots in the span is less than the user equipment span-internal USS blind detection capability, and the sum of the PDCCH blind detection overheads of all USSs on the first 4 time slots in the span is greater than the user equipment span-internal USS blind detection capability. It is determined that the time slot corresponding to the PDCCH overbooking is the 4th time slot.

[0081] Blind detection is performed on all USSs in each of the first 3 time slots.

[0082] On the 4th time slot, the USSs on the time slot corresponding to the PDCCH overbooking are discarded in descending order of the indices of the USSs, until the sum of the PDCCH blind detection overheads of all USSs remaining on the first 4 time slots is less than or equal to the user equipment span-internal USS blind detection capability. Specifically, the USS with the largest index is discarded first, the USS with the second largest index is discarded next, and so on, until the sum of the PDCCH blind detection overheads of all USSs remaining on the first 4 time slots is less than or equal to the user equipment span-internal USS blind detection capability.

[0083] Blind detection is prohibited on the time slots after the 4th time slot.

[0084] In the embodiments of the present disclosure, in response to the sum of the PDCCH blind detection overheads of all USSs on the first M-1 time slots in a span being less than the user equipment span-internal USS blind detection capability, and the sum of the PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than the user equipment span-internal USS blind detection capability, when blind detection is performed on the time slot corresponding to the PDCCH overbooking in the span, the USSs on the time slot corresponding to the PDCCH overbooking are discarded in descending order of the indices of the USSs, until the sum of the PDCCH blind detection overheads of all USSs remaining on the first M time slots in the span is less than or equal to the user equipment span-internal USS blind detection capability. The blind detection overhead required after the discarding operation is performed will not exceed the user equipment span-internal USS blind detection capability, ensuring the stability of the blind detection processing.

[0085] The embodiment of the present disclosure provides a method for receiving downlink control information, which is applied to a user equipment. The method comprises the following steps.

[0086] In response to the sum of PDCCH blind detection overheads of all USSs in the first M-1 time slots in a span being less than the USS blind detection capability of the user equipment in the span, the sum of PDCCH blind detection overheads of all USSs in the first M time slots in the span being equal to the USS blind detection capability of the user equipment in the span, determining that the Mth time slot in the span is a time slot corresponding to PDCCH overbooking. Wherein, the span comprises more than one time slot. M is an integer greater than 1.

[0087] Performing blind detection on the time slots before the time slot corresponding to the PDCCH overbooking in the span, performing blind detection on the time slot corresponding to the PDCCH overbooking in the span, and prohibiting blind detection on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0088] In an embodiment, performing blind detection on the time slots before the time slot corresponding to the PDCCH overbooking in the span comprises: performing blind detection on all USSs of each time slot before the time slot corresponding to the PDCCH overbooking in the span.

[0089] In an embodiment, performing blind detection on the time slot corresponding to the PDCCH overbooking in the span comprises: performing blind detection on all USSs of the time slot corresponding to the PDCCH overbooking in the span.

[0090] In an example, a span contains N time slots (slots). N is an integer greater than 1. The numbers of the N time slots are 0 to N-1 in turn.

[0091] Suppose that a span contains N slots (the numbers are 0 to N-1). USS M represents the USS blind detection overheads required by all USSs in slot M C1 represents the USS blind detection capability of the user equipment in the span.

[0092] When USS0+USS1+…+USS M-1 <=C1, and USS0+USS1+…+USS M =C1, it is determined that slot M in the span is a time slot corresponding to PDCCH overbooking.

[0093] In an example, the span includes 5 time slots. The sum of PDCCH blind decoding overheads of all USSs on the first 3 time slots in the span is less than the USS blind decoding capability of the user equipment within the span, and the sum of PDCCH blind decoding overheads of all USSs on the first 4 time slots in the span is equal to the USS blind decoding capability of the user equipment within the span, and it is determined that the time slot corresponding to the PDCCH overbooking is the 4th time slot.

[0094] Blind decoding is performed on all USSs in each of the first 3 time slots.

[0095] Blind decoding is performed on all USSs in the 4th time slot.

[0096] Blind decoding is prohibited on time slots after the 4th time slot.

[0097] Embodiments of the present disclosure provide a method for receiving downlink control information, which is applied to a user equipment. The method comprises:

[0098] determining a time slot corresponding to PDCCH overbooking in a span; the index value of the time slot corresponding to the PDCCH overbooking in the span is a set value. The span includes more than one time slot.

[0099] performing blind decoding on time slots before the time slot corresponding to the PDCCH overbooking in the span, performing blind decoding on the time slot corresponding to the PDCCH overbooking in the span, and prohibiting blind decoding on time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0100] The set value is an empirical value, to ensure that the sum of PDCCH blind decoding overheads of all USSs in all time slots after the time slot corresponding to the PDCCH overbooking and all USSs in all time slots before the time slot is less than or equal to the USS blind decoding capability of the user equipment within the span.

[0101] In an embodiment, the USS blind decoding capability required by all USSs in the time slot corresponding to the PDCCH overbooking and all time slots before the time slot in the span is greater than or equal to the USS blind decoding capability of the user equipment within the span.

[0102] In embodiments of the present disclosure, when PDCCH overbooking occurs in a span, the time slot with the index value of the set value in the span is determined as the time slot corresponding to the PDCCH overbooking, and all USSs in all time slots after the time slot corresponding to the PDCCH overbooking are discarded, so that the user equipment can enter the energy saving mode as soon as possible after receiving the PDCCH, and the energy saving capability of the user equipment is improved.

[0103] Embodiments of the present disclosure provide a method for receiving downlink control information, which is applied to a user equipment. The method comprises:

[0104] determining a time slot corresponding to the PDCCH overbooking in the span; an index value of the time slot corresponding to the PDCCH overbooking in the span belongs to a set interval, wherein the span includes more than one time slot.

[0105] performing blind detection on a time slot before the time slot corresponding to the PDCCH overbooking in the span, performing blind detection on the time slot corresponding to the PDCCH overbooking in the span, and prohibiting blind detection on a time slot after the time slot corresponding to the PDCCH overbooking in the span.

[0106] The set interval is an empirical value, to ensure that, after discarding all USSs of all time slots corresponding to the PDCCH overbooking, a sum of PDCCH blind detection overheads of all USSs of all time slots before and after the time slot corresponding to the PDCCH overbooking in the span is less than or equal to a USS blind detection capability of the user equipment in the span.

[0107] Embodiments of the present disclosure provide a method for receiving downlink control information, which is applied to a user equipment. The method comprises:

[0108] determining a time slot corresponding to the PDCCH overbooking in the span; wherein the span includes more than one time slot.

[0109] performing blind detection on a time slot before the time slot corresponding to the PDCCH overbooking in the span, prohibiting blind detection on the time slot corresponding to the PDCCH overbooking in the span, and prohibiting blind detection on a time slot after the time slot corresponding to the PDCCH overbooking in the span.

[0110] In the embodiments of the present disclosure, only blind detection is performed on each time slot before the time slot corresponding to the PDCCH overbooking, after discarding USSs of the time slot corresponding to the PDCCH overbooking and USSs of all time slots after the time slot corresponding to the PDCCH overbooking, which effectively improves energy saving effect and processing efficiency in the case of losing some blind detection effect and tolerable blind detection loss.

[0111] Embodiments of the present disclosure provide an apparatus for receiving downlink control information, which is applied to a user equipment. Referring to Figure 2 , Figure 2 FIG. 1 is a structural diagram of an apparatus for receiving downlink control information according to an exemplary embodiment, which comprises: Figure 2

[0112] a determining module configured to determine a time slot corresponding to the PDCCH overbooking in the span; wherein the span includes more than one time slot. ​

[0113] the processing module is configured to perform blind detection on the time slots before the time slot corresponding to the PDCCH overbooking in the span, perform blind detection on the time slot corresponding to the PDCCH overbooking in the span, and prohibit blind detection on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0114] The embodiment of the present disclosure provides a device for receiving downlink control information, which is applied to a user equipment. The device comprises:

[0115] The determining module is configured to determine the Mth time slot in the span as the time slot corresponding to the PDCCH overbooking in response to the sum of PDCCH blind detection overheads of all user equipment specific search spaces (USSs) on the first M-1 time slots in the span being less than a user equipment span-in USS blind detection capability, and the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than or equal to the user equipment span-in USS blind detection capability, wherein M is an integer greater than 1.

[0116] The processing module is configured to perform blind detection on the time slots before the time slot corresponding to the PDCCH overbooking in the span, perform blind detection on the time slot corresponding to the PDCCH overbooking in the span, and prohibit blind detection on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0117] In an embodiment, the user equipment span-in USS blind detection capability comprises a preset user equipment span-in blind detection capability minus a user equipment span-in common search space (CSS) blind detection overhead.

[0118] The embodiment of the present disclosure provides a device for receiving downlink control information, which is applied to a user equipment. The device comprises:

[0119] The determining module is configured to determine the Mth time slot in the span as the time slot corresponding to the PDCCH overbooking in response to the sum of PDCCH blind detection overheads of all user equipment specific search spaces (USSs) on the first M-1 time slots in the span being less than a user equipment span-in USS blind detection capability, and the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than the user equipment span-in USS blind detection capability, wherein M is an integer greater than 1.

[0120] The processing module is configured to perform blind detection on the time slots before the time slot corresponding to the PDCCH overbooking in the span, discard at least one USS on the time slot corresponding to the PDCCH overbooking in the order of descending index of the USS, perform blind detection on the remaining USS on the time slot corresponding to the PDCCH overbooking, and prohibit performing blind detection on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0121] The embodiment of the present disclosure provides a device for receiving downlink control information, which is applied to a user equipment. The device comprises:

[0122] The determining module is configured to determine the Mth time slot in the span as the time slot corresponding to the PDCCH overbooking in response to the sum of PDCCH blind detection overheads of all user equipment specific search spaces (USSs) on the first M-1 time slots in the span being less than the USS blind detection capability within the user equipment span, and the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than the USS blind detection capability within the user equipment span, wherein M is an integer greater than 1.

[0123] The processing module is configured to perform blind detection on the time slots before the time slot corresponding to the PDCCH overbooking in the span, discard the USSs on the time slot corresponding to the PDCCH overbooking in the order of descending index of the USS, until the sum of PDCCH blind detection overheads of all remaining USSs on the first M time slots in the span is less than or equal to the USS blind detection capability within the user equipment span, perform blind detection on the remaining USS on the time slot corresponding to the PDCCH overbooking, and prohibit performing blind detection on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0124] The embodiment of the present disclosure provides a device for receiving downlink control information, which is applied to a user equipment. The device comprises:

[0125] The determining module is configured to determine the Mth time slot in the span as the time slot corresponding to the PDCCH overbooking in response to the sum of PDCCH blind detection overheads of all user equipment specific search spaces (USSs) on the first M-1 time slots in the span being less than the USS blind detection capability within the user equipment span, and the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being equal to the USS blind detection capability within the user equipment span, wherein M is an integer greater than 1.

[0126] The processing module is configured to perform blind detection on the time slots before the time slot corresponding to the PDCCH overbooking in the span, perform blind detection on all USSs on the time slot corresponding to the PDCCH overbooking, and prohibit performing blind detection on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0127] The present embodiment provides a device for receiving downlink control information, which is applied to a user equipment. The device comprises:

[0128] The determining module is configured to determine a time slot corresponding to PDCCH overbooking in a span, and an index value of the time slot corresponding to PDCCH overbooking in the span is a set value. The span comprises more than one time slot.

[0129] The processing module is configured to perform blind detection on the time slots before the time slot corresponding to the PDCCH overbooking in the span, perform blind detection on the time slot corresponding to the PDCCH overbooking, and prohibit performing blind detection on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0130] The present embodiment provides a device for receiving downlink control information, which is applied to a user equipment. The device comprises:

[0131] The determining module is configured to determine a time slot corresponding to PDCCH overbooking in a span, and a ratio of an index value of the time slot corresponding to PDCCH overbooking to a total number of time slots contained in the span belongs to a set interval. The span comprises more than one time slot.

[0132] The processing module is configured to perform blind detection on the time slots before the time slot corresponding to the PDCCH overbooking in the span, perform blind detection on the time slot corresponding to the PDCCH overbooking, and prohibit performing blind detection on the time slots after the time slot corresponding to the PDCCH overbooking in the span.

[0133] Figure 3 FIG. 3 is a block diagram of a device 300 for receiving downlink control information according to an exemplary embodiment. For example, the device 300 can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

[0134] Referring to Figure 3 , the device 300 can include one or more of the following components: a processing component 302, a memory 304, a power supply component 306, a multimedia component 308, an audio component 310, an input / output (I / O) interface 312, a sensor component 314, and a communication component 316.

[0135] The processing component 302 generally controls the overall operations of the device 300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 302 can include one or more processors 320 to execute instructions

[0136] The memory 304 is configured to store various types of data to support operations of the device 300. Examples of such data include instructions for any applications or methods operating on the device 300, contact data, phonebook data, messages, pictures, videos, and so on. The memory 304 can be implemented by any type of volatile or nonvolatile storage devices 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 memory, flash memory, magnetic disks, or optical disks.

[0137] The power component 306 provides power to the various components of the device 300. The power component 306 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 300.

[0138] The multimedia component 308 includes a screen providing an output interface between the device 300 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes the touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide, and a gesture on the touch panel. The touch sensors can not only sense a boundary of a touching or sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 308 includes a front camera and / or a rear camera. When the device 300 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have a focal length and optical zoom capability.

[0139] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) that is configured to receive an external audio signal when the device 300 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 also includes a speaker for outputting audio signals.

[0140] The I / O interface 312 provides an interface between the processing component 302 and peripheral interface modules, which can include a keypad, a click wheel, buttons, and so on. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0141] The sensor component 314 includes one or more sensors for providing status assessments of various aspects of the device 300. For example, the sensor component 314 can detect an open / closed position of the device 300, relative positioning of components, such as a display and a keypad of the device 300, a change of position of the device 300 or a component of the device 300, presence or absence of user contact with the device 300, changes in orientation or acceleration / deceleration

[0142] The communication component 316 is configured to facilitate wired or wireless communication between the device 300 and other devices. The device 300 can access a wireless network based on a corresponding communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an example embodiment, the communication component 316 receives broadcast signals or broadcast-related information from external broadcast management systems via a broadcast channel. In an example embodiment, the communication component 316 also includes a Near Field Communication (NFC) module to promote short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) techniques, infrared data association (IrDA) techniques, ultra-wideband (UWB) techniques, Bluetooth (BT) techniques, and other techniques.

[0143] In an exemplary embodiment, the apparatus 300 can be implemented using 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, micro-controllers, microprocessors or other electronic components, for performing the above-described methods.

[0144] In an exemplary embodiment, a non-transitory computer readable storage medium including instructions, such as the memory 304 including instructions, is also provided, which can be executed by the processor 320 of the apparatus 300 to complete the above-described methods. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0145] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the present disclosure cover any and all variations of the embodiments of the present disclosure herein disclosed, which are in accordance with the principles and spirit of the present disclosure, and includes various features of novelty, not incident to the state of the art. The specification and examples given are intended as illustrative only and not restrictive of the true scope and spirit of the present disclosure.

[0146] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the claims which follow.

Claims

1. A method for receiving downlink control information, applied to a user equipment, comprising: determining a time slot corresponding to PDCCH overbooking in a span; wherein the span comprises more than one time slot; performing blind detection on a time slot before the time slot corresponding to PDCCH overbooking in the span, performing blind detection on the time slot corresponding to PDCCH overbooking in the span, and prohibiting performing blind detection on a time slot after the time slot corresponding to PDCCH overbooking in the span; wherein the determining the time slot corresponding to PDCCH overbooking in the span comprises: in response to a sum of PDCCH blind detection overheads of all user equipment specific search spaces (USSs) on the first M-1 time slots in the span being less than a user equipment intra-span USS blind detection capability, and a sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than or equal to the user equipment intra-span USS blind detection capability, determining the Mth time slot in the span as the time slot corresponding to PDCCH overbooking, wherein M is an integer greater than 1; wherein the performing blind detection on the time slot corresponding to PDCCH overbooking in the span comprises: in response to the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than the user equipment intra-span USS blind detection capability, discarding at least one USS on the time slot corresponding to PDCCH overbooking in a descending order of indexes of the USSs; or, in response to the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than the user equipment intra-span USS blind detection capability, discarding the USSs on the time slot corresponding to PDCCH overbooking in a descending order of indexes of the USSs one by one until a sum of PDCCH blind detection overheads of all remaining USSs on the first M time slots in the span is less than or equal to the user equipment intra-span USS blind detection capability; or, in response to the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being equal to the user equipment intra-span USS blind detection capability, performing blind detection on all USSs on the time slot corresponding to PDCCH overbooking. 2.The method of claim 1, wherein the user equipment intra-span USS blind detection capability comprises a difference between a preset user equipment intra-span blind detection capability and a user equipment intra-span common search space (CSS) blind detection overhead. 3.The method of claim 1, wherein the performing blind detection on the time slot corresponding to PDCCH overbooking in the span comprises: performing blind detection on the remaining USSs on the time slot corresponding to PDCCH overbooking. 4.The method of claim 1, wherein the determining the time slot corresponding to PDCCH overbooking in the span comprises: an index value of the time slot corresponding to PDCCH overbooking in the span being a preset value. 5.The method of claim 1, wherein the determining the time slot corresponding to PDCCH overbooking in the span comprises: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ An index value of a time slot corresponding to PDCCH overbooking in the span belongs to a set interval.

6. An apparatus for receiving downlink control information, applied to a user equipment, comprising: a determining module configured to determine a time slot corresponding to PDCCH overbooking in a span; wherein the span comprises more than one time slot; a processing module configured to perform blind detection on a time slot before the time slot corresponding to PDCCH overbooking in the span, perform blind detection on the time slot corresponding to PDCCH overbooking in the span, and prohibit blind detection on a time slot after the time slot corresponding to PDCCH overbooking in the span; the determining module is specifically configured to: in response to a sum of PDCCH blind detection overheads of all user equipment specific search spaces (USSs) on the first M-1 time slots in the span being less than a user equipment in-span USS blind detection capability, and a sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than or equal to the user equipment in-span USS blind detection capability, determine the Mth time slot in the span as the time slot corresponding to PDCCH overbooking, wherein M is an integer greater than 1; the processing module is specifically configured to: in response to the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than the user equipment in-span USS blind detection capability, discard at least one USS on the time slot corresponding to PDCCH overbooking in descending order of indexes of the USSs; or, in response to the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being greater than the user equipment in-span USS blind detection capability, discard the USSs on the time slot corresponding to PDCCH overbooking in descending order of indexes of the USSs one by one until the sum of PDCCH blind detection overheads of all remaining USSs on the first M time slots in the span is less than or equal to the user equipment in-span USS blind detection capability; or, in response to the sum of PDCCH blind detection overheads of all USSs on the first M time slots in the span being equal to the user equipment in-span USS blind detection capability, perform blind detection on all USSs on the time slot corresponding to PDCCH overbooking.

7. A user equipment, comprising: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to execute the executable instructions in the memory to enable the user equipment to implement the method for receiving downlink control information according to any one of claims 1 to 5.

8. A non-transitory computer-readable storage medium having stored thereon executable instructions that, when executed by a user equipment, enable the user equipment to implement the method for receiving downlink control information according to any one of claims 1 to 5.

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