CN115226237A - Transmission method, device and medium for completely overlapping physical downlink control channel candidates - Google Patents

Transmission method, device and medium for completely overlapping physical downlink control channel candidates Download PDF

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Publication number
CN115226237A
CN115226237A CN202110431522.7A CN202110431522A CN115226237A CN 115226237 A CN115226237 A CN 115226237A CN 202110431522 A CN202110431522 A CN 202110431522A CN 115226237 A CN115226237 A CN 115226237A
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China
Prior art keywords
search space
target
offset
pdcch
pdcch candidate
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CN202110431522.7A
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Chinese (zh)
Inventor
王磊
沈姝伶
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Priority to CN202110431522.7A priority Critical patent/CN115226237A/en
Priority to PCT/CN2022/080714 priority patent/WO2022222643A1/en
Publication of CN115226237A publication Critical patent/CN115226237A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0289—Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Abstract

The application provides a transmission method, a device and a medium for completely overlapping physical downlink control channel candidates. The method comprises the following steps: acquiring completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively; determining a first target search space or a target PDCCH candidate for shifting from the search space, or determining a second target search space for transferring from the search space; offsetting the first target search space or the target PDCCH candidate, or transferring the second target search space; and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position.

Description

Transmission method, device and medium for completely overlapping physical downlink control channel candidates
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a medium for transmitting a complete overlapping physical downlink control channel candidate.
Background
With the development of communication technology, the 5G NR system has also been rapidly developed. In a 5G NR system, when facing a scenario such as multi-connection, and when a large number of terminal devices (hereinafter, referred to as User Equipment, UE for short) interact with a base station, the base station needs to issue a large number of Physical Downlink Control channels (hereinafter, referred to as Physical Downlink Control channels, PDCCH for short) at the same time.
However, the maximum number of blind detections for PDCCH by UE specified in the prior art cannot meet the requirement, so the base station is considered to configure the same payload size for different Downlink Control Information (DCI) format types. However, in this configuration, when there are completely overlapped PDCCH candidates belonging to different Search spaces (hereinafter referred to as Search spaces, SS for short), if the CORESET associated with different Search spaces is the same, the UE and the base station cannot distinguish DCI formats corresponding to the completely overlapped PDCCH candidates through payload size, so that the UE cannot correctly receive the PDCCH transmitted by the base station, and the blocking probability of the PDCCH is increased.
Disclosure of Invention
The application provides a transmission method, a device and a medium for completely overlapping physical downlink control channel candidates. The method and the device solve the technical problems that in the prior art, when completely overlapped PDCCH candidates belonging to different SSs exist, the UE and the base station cannot distinguish DCI formats corresponding to the completely overlapped PDCCH candidates through payload size, so that the UE cannot correctly receive the PDCCH sent by the base station, and the PDCCH blocking probability is increased.
In a first aspect, the present application provides a method for transmitting a completely overlapping physical downlink control channel candidate, including: the method is applied to the terminal equipment and comprises the following steps:
acquiring completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively;
determining a first target search space or a target PDCCH candidate for shifting from the search spaces, or determining a second target search space for transferring from the search spaces;
shifting the first target search space or the target PDCCH candidate, or transferring the second target search space;
and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position.
Optionally, the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
Optionally, the shifting the first target search space or the target PDCCH candidate includes:
determining a first offset of the first target search space or a second offset of the target PDCCH candidate;
and offsetting the first target search space in the associated control resource set according to the first offset, or offsetting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
Optionally, the determining the first offset of the first target search space or the second offset of the target PDCCH candidate includes:
acquiring a search space offset preset by a protocol with a base station or a preset PDCCH candidate offset;
and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
Optionally, the determining a first offset of the first target search space or a second offset of the target PDCCH candidate includes:
receiving first configuration information sent by a base station;
determining the first offset from first configuration information of a first target search space or determining the second offset from first configuration information of a search space corresponding to the target PDCCH candidate.
Optionally, the first offset is a first predefined CCE number, and the first predefined CCE number includes any one of the following CCE numbers:
CCE number occupied by the whole target search space, CCE number occupied by part of search space in the target search space, and CCE number occupied by any PDCCH candidate to be distinguished;
the second offset is a second predefined number of CCEs, and the second predefined number of CCEs is the number of CCEs occupied by any PDCCH candidate to be distinguished.
Optionally, when the first offset and the second offset are CCE quantities occupied by any one PDCCH candidate to be distinguished, the first offset and the second offset are maximum CCE quantities occupied by each PDCCH candidate to be distinguished.
Optionally, after the offsetting the target PDCCH candidate, the method further includes:
and if the target PDCCH candidate after the offset is completely overlapped with the PDCCH candidate in any search space again, continuing to offset the target PDCCH candidate after the offset until the target PDCCH candidate is not completely overlapped with the PDCCH candidate in any search space any more.
Optionally, the offset number is less than or equal to a preset offset number threshold, where the preset offset number threshold is preset or configured by a higher layer signaling.
Optionally, the second target search space is any one of the search spaces;
or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
Optionally, the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any one search space, and the method further includes:
and putting the PDCCH candidates to be distinguished into a new search space in the current bandwidth slice BWP, wherein the index number of the new search space is the index number of the original search space corresponding to the PDCCH candidates to be distinguished.
Optionally, the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any one search space, and the method further includes:
and putting the PDCCH candidates to be distinguished into a new search space in the current BWP, wherein the index number of the new search space is configured as an unoccupied index number in the current BWP.
Optionally, the new search space configures the number of PDCCH candidates included in each aggregation level, and other configuration parameters of the new search space are the same as configuration parameters corresponding to the original search space.
Optionally, the transferring the second target search space includes:
determining a set of standby control resources to which the second target search space is transferred;
transferring the second target search space into a set of standby control resources.
Optionally, the standby control resource set is a preset control resource set, where the preset control resource set is a previous control resource set or a next control resource set adjacent to the control resource set associated with the second target search space, or is a predefined default control resource set.
Optionally, the determining the set of standby control resources to which the second target search space is transferred includes:
receiving second configuration information sent by the base station;
the set of standby control resources to transfer to is determined from second configuration information of a second target search space.
Optionally, the standby control resource set is a control resource set configured in the current BWP, and the standby control resource set is a control resource set specific to the terminal device.
Optionally, before detecting and receiving the corresponding PDCCH according to the actual transmission position, the method further includes:
detecting and receiving a corresponding PDCCH according to an initial transmission position corresponding to each PDCCH candidate to be distinguished;
the detecting and receiving the corresponding PDCCH according to the actual transmission position comprises:
if the corresponding PDCCH is not received, detecting and receiving the corresponding PDCCH according to the actual transmission position;
when the corresponding PDCCH is detected and received according to the actual transmission position, the sum of the times of detecting whether the corresponding PDCCH needs to be received at the transmission position corresponding to the PDCCH candidate in the current time slot is less than the maximum blind detection time in the current time slot.
In a second aspect, the present application provides a method for transmitting completely overlapping physical downlink control channel candidates, where the method is applied to a base station, and the method includes:
determining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively;
determining a first target search space or a target PDCCH candidate for shifting from the search spaces, or determining a second target search space for transferring from the search spaces;
shifting the first target search space or the target PDCCH candidate, or transferring the second target search space;
and determining an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and transmitting the corresponding PDCCH according to the actual transmission position.
Optionally, the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
Optionally, the shifting the first target search space or the target PDCCH candidate includes:
determining a first offset of the first target search space or a second offset of the target PDCCH candidate;
and offsetting the first target search space in the associated control resource set according to the first offset, or offsetting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
Optionally, the determining the first offset of the first target search space or the second offset of the target PDCCH candidate includes:
acquiring a search space offset preset by a protocol with a terminal device or a preset PDCCH candidate offset;
and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
Optionally, after determining the first offset of the first target search space or the second offset of the target PDCCH candidate, the method further includes:
and sending first configuration information to the terminal equipment so that the terminal equipment determines the first offset from the first configuration information of a first target search space or determines the second offset from the first configuration information of a search space corresponding to the target PDCCH candidate.
Optionally, the second target search space is any one of the search spaces;
or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
Optionally, the transferring the second target search space includes:
determining a set of standby control resources to which the second target search space is transferred;
transferring the second target search space into a set of standby control resources.
Optionally, after determining the set of standby control resources to which the second target search space is transferred, the method further includes:
and sending second configuration information to the terminal equipment so that the terminal equipment determines the standby control resource set to be transferred from the second configuration information of the second target search space.
In a third aspect, the present application provides an apparatus for distinguishing completely overlapping physical downlink control channel candidates, where the apparatus is located in a terminal device, and the apparatus includes:
memory, transceiver, processor:
a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following:
acquiring completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively;
determining a first target search space or a target PDCCH candidate for shifting from the search spaces, or determining a second target search space for transferring from the search spaces;
shifting the first target search space or the target PDCCH candidate, or transferring the second target search space;
and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position.
Optionally, the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
Optionally, the processor, when shifting the first target search space or the target PDCCH candidate, is specifically configured to:
determining a first offset of the first target search space or a second offset of the target PDCCH candidate;
and shifting the first target search space in the associated control resource set according to the first offset, or shifting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
Optionally, the processor, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, is specifically configured to:
acquiring a search space offset preset by a protocol with a base station or a preset PDCCH candidate offset;
and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
Optionally, the processor, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, is specifically configured to:
receiving first configuration information sent by a base station;
determining the first offset from first configuration information of a first target search space or determining the second offset from first configuration information of a search space corresponding to the target PDCCH candidate.
Optionally, the first offset is a first predefined CCE number, and the first predefined CCE number includes any one of the following CCE numbers:
CCE number occupied by the whole target search space, CCE number occupied by part of search space in the target search space, and CCE number occupied by any PDCCH candidate to be distinguished;
the second offset is a second predefined number of CCEs, and the second predefined number of CCEs is the number of CCEs occupied by any PDCCH candidate to be distinguished.
Optionally, when the first offset and the second offset are CCE quantities occupied by any one PDCCH candidate to be distinguished, the first offset and the second offset are maximum CCE quantities occupied by each PDCCH candidate to be distinguished.
Optionally, the processor, after shifting the target PDCCH candidate, is further configured to:
and if the target PDCCH candidate after the offset is completely overlapped with the PDCCH candidate in any search space again, continuing to offset the target PDCCH candidate after the offset until the target PDCCH candidate is not completely overlapped with the PDCCH candidate in any search space any more.
Optionally, the offset number is less than or equal to a preset offset number threshold, where the preset offset number threshold is preset or configured by a higher layer signaling.
Optionally, the second target search space is any one of the search spaces;
or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
Optionally, the second target search space is a new search space formed by PDCCH candidates to be distinguished in any search space, and the processor is further configured to:
and putting the PDCCH candidates to be distinguished into a new search space in the current bandwidth slice BWP, wherein the index number of the new search space is the index number of the original search space corresponding to the PDCCH candidates to be distinguished.
Optionally, the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space, and then the processor is further configured to:
and putting the PDCCH candidates to be distinguished into a new search space in the current BWP, wherein the index number of the new search space is configured as an unoccupied index number in the current BWP.
Optionally, the new search space configures the number of PDCCH candidates included in each aggregation level, and other configuration parameters of the new search space are the same as the configuration parameters corresponding to the original search space.
Optionally, the processor, when the second target search space is transferred, specifically includes:
determining a set of standby control resources to which the second target search space is transferred;
transferring the second target search space into a set of standby control resources.
Optionally, the standby control resource set is a preset control resource set, and the preset control resource set is a previous control resource set or a next control resource set adjacent to the control resource set associated with the second target search space, or a predefined default control resource set.
Optionally, the processor, configured to determine a set of standby control resources to which the second target search space is transferred, specifically includes:
receiving second configuration information sent by the base station;
the set of standby control resources to transfer to is determined from second configuration information of a second target search space.
Optionally, the standby control resource set is a control resource set configured in the current BWP, and the standby control resource set is a control resource set specific to the terminal device.
Optionally, the processor, before detecting and receiving the corresponding PDCCH according to the actual transmission position, further includes:
detecting and receiving a corresponding PDCCH according to an initial transmission position corresponding to each PDCCH candidate to be distinguished;
the detecting and receiving the corresponding PDCCH according to the actual transmission position comprises:
if the corresponding PDCCH is not received, detecting and receiving the corresponding PDCCH according to the actual transmission position;
when the corresponding PDCCH is detected and received according to the actual transmission position, the sum of the times of detecting whether the corresponding PDCCH needs to be received at the transmission position corresponding to the PDCCH candidate in the current time slot is less than the maximum blind detection time in the current time slot.
In a fourth aspect, the present application provides an apparatus for transmitting completely overlapping physical downlink control channel candidates, where the apparatus is located in a base station, and the apparatus includes:
memory, transceiver, processor:
a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following:
determining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively;
determining a first target search space or a target PDCCH candidate for shifting from the search spaces, or determining a second target search space for transferring from the search spaces;
shifting the first target search space or the target PDCCH candidate, or transferring the second target search space;
and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and sending the corresponding PDCCH according to the actual transmission position.
Optionally, the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
Optionally, the processor, when shifting the first target search space or the target PDCCH candidate, is specifically configured to:
determining a first offset of the first target search space or a second offset of the target PDCCH candidate;
and offsetting the first target search space in the associated control resource set according to the first offset, or offsetting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
Optionally, the processor, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, is specifically configured to:
acquiring a search space offset preset by a protocol with a terminal device or a preset PDCCH candidate offset;
and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
Optionally, the processor, configured to determine a first offset of the first target search space or a second offset of the target PDCCH candidate, further includes:
and sending first configuration information to the terminal equipment so that the terminal equipment determines the first offset from the first configuration information of a first target search space or determines the second offset from the first configuration information of a search space corresponding to the target PDCCH candidate.
Optionally, the second target search space is any one of the search spaces;
or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
Optionally, the processor, when the second target search space is transferred, specifically includes:
determining a set of standby control resources to which the second target search space is transferred;
transferring the second target search space into a set of standby control resources.
Optionally, the processor, configured to determine a set of standby control resources to which the second target search space is transferred, further includes:
and sending second configuration information to the terminal equipment so that the terminal equipment determines the standby control resource set to be transferred from the second configuration information of the second target search space.
In a fifth aspect, the present application provides an apparatus for transmitting a completely overlapping pdcch candidate, where the apparatus is located in a terminal device, and the apparatus includes:
an obtaining unit, configured to obtain completely overlapped PDCCH candidates of physical downlink control channels to be distinguished, where the PDCCH candidates to be distinguished are from different search spaces respectively;
a determining unit, configured to determine a first target search space or a target PDCCH candidate for performing offset from the search space, or determine a second target search space for performing transition from the search space;
an offset shifting unit, configured to shift the first target search space or the target PDCCH candidate, or shift the second target search space;
the determining unit is further configured to determine an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result;
and the detection receiving unit is used for detecting and receiving the corresponding PDCCH according to the actual transmission position.
In a sixth aspect, the present application provides an apparatus for transmitting completely overlapping physical downlink control channel candidates, where the apparatus is located in a base station, and the apparatus includes:
a determining unit, configured to determine completely overlapped PDCCH candidates of physical downlink control channels to be distinguished, where the PDCCH candidates to be distinguished are from different search spaces respectively;
the determining unit is further configured to determine a first target search space or a target PDCCH candidate for performing an offset from the search spaces, or determine a second target search space for performing a transition from the search spaces;
an offset shifting unit, configured to shift the first target search space or the target PDCCH candidate, or shift the second target search space;
the determining unit is further configured to determine an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result;
and the sending unit is used for sending the corresponding PDCCH according to the actual transmission position.
In a seventh aspect, the present application provides a processor readable storage medium having stored thereon a computer program for causing a processor to execute the method of any one of the first or second aspects.
The application provides a transmission method, a device and a medium for completely overlapping physical downlink control channel candidates. The method comprises the steps that completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished are obtained, and the PDCCH candidates to be distinguished come from different search spaces respectively; determining a first target search space or a target PDCCH candidate for shifting from the search spaces, or determining a second target search space for transferring from the search spaces; shifting the first target search space or the target PDCCH candidate, or transferring the second target search space; and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position. Since the frequency domain position corresponding to the completely overlapped PDCCH candidates can be effectively changed by offsetting the first target search space or the target PDCCH candidates or transferring the second target search space, even if the completely overlapped PDCCH candidates belonging to different SSs exist under the condition that different DCI format types are configured with the same payload size, the DCI formats corresponding to the completely overlapped PDCCH candidates can be accurately distinguished according to the actual transmission positions corresponding to the changed PDCCH candidates, thereby ensuring that the UE correctly receives the PDCCH sent by the base station and effectively reducing the blocking probability of the PDCCH.
It should be understood that what is described in the summary above is not intended to limit key or critical features of embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic diagram of completely overlapping PDCCH candidates belonging to different SSs;
fig. 2 is a network architecture diagram of a transmission method for completely overlapping physical downlink control channel candidates according to an embodiment of the present application;
fig. 3 is a flowchart illustrating a method for transmitting a completely overlapping pdcch candidate according to an embodiment of the present application;
fig. 4 is a flowchart illustrating a method for transmitting a completely overlapping pdcch candidate according to another embodiment of the present application;
fig. 5a is a schematic diagram illustrating a first offset performed on a first target search space in a transmission method for completely overlapping pdcch candidates according to an embodiment of the present application;
fig. 5b is a schematic diagram illustrating a second offset performed on a first target search space in the transmission method for completely overlapping pdcch candidates according to the embodiment of the present application;
fig. 5c is a schematic diagram illustrating third shifting performed on the first target search space in the transmission method for completely overlapping pdcch candidates according to the embodiment of the present application;
fig. 6 is a schematic diagram illustrating a fourth offset performed on a first target search space in a transmission method for a completely overlapping pdcch candidate according to an embodiment of the present application;
fig. 7 is a schematic flowchart illustrating a first offset performed on a target PDCCH candidate in a transmission method for completely overlapping physical downlink control channel candidates according to an embodiment of the present application;
fig. 8 is a flowchart illustrating a second offset performed on a target PDCCH candidate in a transmission method for completely overlapping physical downlink control channel candidates according to an embodiment of the present application;
fig. 9 is a flowchart illustrating a method for transmitting completely overlapping pdcch candidates according to another embodiment of the present application;
fig. 10 is a flowchart illustrating a method for transmitting a completely overlapping pdcch candidate according to another embodiment of the present application;
fig. 11 is a flowchart illustrating a transmission method for completely overlapping pdcch candidates according to still another embodiment of the present application;
fig. 12 is a flowchart illustrating a method for transmitting a completely overlapping pdcch candidate according to another embodiment of the present application;
fig. 13 is a schematic structural diagram of an apparatus for transmitting full-overlap pdcch candidates according to an embodiment of the present application;
fig. 14 is a schematic structural diagram of a transmission apparatus for completely overlapping pdcch candidates according to another embodiment of the present application;
fig. 15 is a schematic structural diagram of a transmission apparatus for completely overlapping pdcch candidates according to another embodiment of the present application;
fig. 16 is a schematic structural diagram of a transmission apparatus for completely overlapping pdcch candidates according to still another embodiment of the present application.
Detailed Description
In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.
For clear understanding of the technical solutions of the present application, the prior art and the technical background will be first described in detail.
In the 5G NR system, the BandWidth of the UE may be dynamically changed, and each UE may set its own BandWidth partition (hereinafter, referred to as BandWidth Part, abbreviated as BWP). At most 10 SSs can be configured in one BWP, and the configuration information of the SSs configured for the UE by the higher layer signaling includes: the number of the CORESET associated with the current SS, the time domain starting position of the PDCCH candidate, whether the current SS is UE-specific (UE-specific Search Space, abbreviated as USS) or not, and the DCI format that the UE needs to monitor when the Search Space is the USS. At most 3 Control REsource SETs (hereinafter, referred to as Control REsource SET, core, for short: core SET) can be configured in a BWP, and configuration information of the core SET configured by a higher layer signaling includes: the frequency domain REG distribution of PDCCH candidates, the number of OFDM symbols occupied by the time domain and the like.
Based on the configuration information of the SS and the CORESET in the higher layer signaling, it can be known that the time-frequency domain position of the PDCCH candidate is determined by both the SS and the CORESET. After the UE determines the time-frequency domain position of the PDCCH candidate, blind detection needs to be performed on the PDCCH candidate according to a DCI format configured in the SS.
In the Rel-15/16 protocol, UE-specific DCI can be classified into fallback (full-name: fallback) DCI formats (e.g., DCI 0/1/0), non-fallback (full-name: non-fallback) DCI formats (e.g., DCI 0/1), and new DCI formats (e.g., DCI 0/2/1/2). The UE only aims at the DCI formats with the same payload size in one blind detection, and the UE distinguishes different DCI format types transmitted by the base station through different payload sizes in the blind detection. Specifically, three cases are included: if the payload sizes of the non-fallback DCI and the fallback DCI are the same, 1bit needs to be additionally added to the non-fallback DCI; payload size of the new DCI configuration may not be the same as that of the fallback DCI; the payload size of the non-fallback DCI configuration may not be the same as the new DCI. Since different SSs may have different DCI formats configured, as shown in fig. 1, when multiple PDCCH candidates determined by different SSs and/or CORESET completely overlap, the UE may determine the corresponding DCI format through payload size. In fig. 1, a first PDCCH candidate in a first SS (SS #1 in fig. 1) completely overlaps with a first PDCCH candidate in a second SS (SS #2 in fig. 1).
Additionally, the UE has a certain number of times of blind detection on the PDCCH in one time slot. Table 1 shows the maximum number of blind detections in a timeslot for a UE under different scenarios (case in english) and subcarrier intervals. And if the number of blind tests of the UE in one time slot exceeds the limit, the UE does not perform blind tests in the time slot.
Table 1: indication table of maximum blind detection times of UE in one time slot
Figure BDA0003031554080000141
In the 5G NR system, when facing a scenario such as multi-connection, and when a large number of terminal devices interact with a base station, the base station needs to issue a large number of PDCCHs simultaneously, and the maximum number of blind tests on the PDCCHs by the UE specified in the prior art cannot meet the requirement, so the base station is considered to configure the same payload size for different DCI format types. However, when there are completely overlapped PDCCH candidates belonging to different SSs, if the CORESET associated with different search spaces is the same, the UE and the base station cannot distinguish DCI formats corresponding to the completely overlapped PDCCH candidates through payload size, so that the UE cannot correctly receive the PDCCH sent by the base station, and thus the PDCCH blocking probability is increased.
In order to effectively distinguish the completely overlapping PDCCHs, the DCI formats corresponding to the completely overlapping PDCCH candidates may be determined by changing the frequency domain positions corresponding to the completely overlapping PDCCH candidates. The completely overlapping PDCCH candidates may be referred to as PDCCH candidates to be distinguished. When the frequency domain position corresponding to the PDCCH candidate to be distinguished is changed, a first target search space or a target PDCCH candidate which needs to be shifted may be determined from the search spaces of the PDCCH candidates to be distinguished, or a second target search space for transferring may be determined from the search spaces. And then shifting the first target search space or the target PDCCH candidate, or transferring the second target search space. And finally, determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result so as to distinguish each PDCCH candidate to be distinguished, and further, according to the actual transmission position, the base station sends the corresponding PDCCH or the terminal detects and receives the corresponding PDCCH. Since the frequency domain position corresponding to the completely overlapped PDCCH candidates can be effectively changed by offsetting the first target search space or the target PDCCH candidates or transferring the second target search space in the application, even if the completely overlapped PDCCH candidates belonging to different SSs exist under the condition that different DCI format types are configured with the same payload size, the DCI formats corresponding to the completely overlapped PDCCH candidates can be accurately distinguished according to the actual transmission position corresponding to the changed PDCCH candidates, so that the terminal is ensured to correctly receive the PDCCH sent by the base station, and the blocking probability of the PDCCH is effectively reduced.
Fig. 2 is a network architecture diagram of a transmission method for completely overlapping pdcch candidates provided in this embodiment, as shown in fig. 2, a network architecture of the transmission method for completely overlapping pdcch candidates provided in this embodiment is a network architecture of a 5G NR system, and the network architecture may include: a base station 1 and a terminal device. In fig. 2 two terminal devices are illustrated, respectively terminal device 21 and terminal device 22. When the base station 1 transmits the PDCCH to the terminal device, if the PDCCH needs to be transmitted on completely overlapped PDCCH candidates from different SSs, it needs to determine an actual transmission position corresponding to each PDCCH candidate. When the terminal device detects and receives the PDCCH from the base station, if the PDCCH candidates from different SSs are completely overlapped, it needs to determine the actual transmission position corresponding to each PDCCH candidate. The actual transmission position corresponding to each PDCCH candidate is determined by using the transmission method of the completely overlapped PDCCH candidates provided by the embodiment of the present application.
It is to be understood that the number of terminal devices connected to the base station is not limited. The terminal device referred to in the embodiments of the present application may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, e.g., a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which is not limited in this embodiment.
The base station and the terminal device according to the embodiment of the present application may each use one or more antennas to perform Multiple Input Multiple Output (MIMO) transmission, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). According to the form and the number of the root antenna combination, the MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, and can also be diversity transmission, precoding transmission, beamforming transmission, etc.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example one
Fig. 3 is a flowchart illustrating a transmission method for completely overlapping pdcch candidates according to an embodiment of the present invention, and as shown in fig. 3, an execution main body of the transmission method for completely overlapping pdcch candidates according to the present embodiment is a transmission device for completely overlapping pdcch candidates, and the transmission device for completely overlapping pdcch candidates is located in a terminal device. The method for transmitting the completely overlapped pdcch candidates provided in this embodiment includes the following steps:
step 101, obtaining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively.
In this embodiment, the configuration information of the SS and the configuration information of the CORESET in the high-level signaling sent by the base station are received. And determining the time-frequency domain position corresponding to the PDCCH candidates in each search space according to the configuration information of the SS and the configuration information of the CORESET, and further determining whether completely overlapped PDCCH candidates to be distinguished exist. And if the completely overlapped PDCCH candidates to be distinguished exist, acquiring the completely overlapped PDCCH candidates to be distinguished. As shown in fig. 1, the completely overlapping PDCCH candidates to be distinguished come from different SSs.
Step 102, determining a first target search space or a target PDCCH candidate for performing shifting from the search space, or determining a second target search space for performing shifting from the search space.
The first target search space is a search space which is determined from search spaces corresponding to completely overlapped PDCCHs to be distinguished and needs to be subjected to deviation. The target PDCCH candidates are PDCCH candidates which need to be subjected to deviation and are determined from PDCCHs to be distinguished corresponding to the search space. The second target search space is a search space which is determined from search spaces corresponding to completely overlapped PDCCHs to be distinguished and needs to be transferred.
In this embodiment, the first target search space is any one of the search spaces or the target PDCCH candidate is a PDCCH candidate to be distinguished in any one of the search spaces. The second target search space is any one of the search spaces; or the second target search space is a new search space constructed by the PDCCH candidates to be distinguished in any one search space.
Step 103, shifting the first target search space or the target PDCCH candidate, or shifting the second target search space.
In this embodiment, when the first target search space or the target PDCCH candidate is shifted, a first offset of the first target search space or a second offset of the target PDCCH candidate may be determined first, and then the first target search space is shifted in the associated control resource set according to the first offset, or the target PDCCH candidate is shifted in the control resource set associated with the corresponding search space according to the second offset.
Or in this embodiment, when the second target search space is transferred, the standby control resource set to which the second target search space is transferred may be first transferred; the second target search space is transferred to the set of standby control resources.
And step 104, determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position.
In this embodiment, if the first target search space or the target PDCCH candidate is shifted, a shift result is obtained, an actual transmission position corresponding to each PDCCH candidate to be distinguished is determined according to the shift result, a search space to which each PDCCH to be distinguished belongs is further determined according to the actual transmission position, a DCI format corresponding to the PDCCH to be distinguished is determined according to configuration information of the search space to which each PDCCH to be distinguished belongs, and the corresponding PDCCH is detected and received according to the DCI format.
Or in this embodiment, if the second target search space is transferred, obtaining a transfer result, determining an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the transfer result, further determining a search space to which each PDCCH to be distinguished belongs according to the actual transmission position, determining a DCI format corresponding to the PDCCH to be distinguished according to configuration information of the search space to which each PDCCH to be distinguished belongs, and detecting and receiving the corresponding PDCCH according to the DCI format.
In the transmission method of the completely overlapped PDCCH candidates provided in this embodiment, completely overlapped PDCCH candidates to be distinguished are obtained, and each PDCCH candidate to be distinguished is from a different search space; determining a first target search space or a target PDCCH candidate for shifting from the search spaces, or determining a second target search space for transferring from the search spaces; shifting the first target search space or the target PDCCH candidate, or transferring the second target search space; and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position. Since the frequency domain position corresponding to the completely overlapped PDCCH candidate can be effectively changed by offsetting the first target search space or the target PDCCH candidate or by transferring the second target search space, even if the completely overlapped PDCCH candidates belonging to different SSs exist under the condition that different DCI format types are configured with the same payload size, the DCI format corresponding to the completely overlapped PDCCH candidate can be accurately distinguished according to the actual transmission position corresponding to the changed PDCCH candidate, so that the terminal is ensured to correctly receive the PDCCH sent by the base station, and the blocking probability of the PDCCH is effectively reduced.
Example two
Fig. 4 is a schematic flowchart of a transmission method for completely overlapping PDCCH candidates according to another embodiment of the present application, and as shown in fig. 4, the transmission method for completely overlapping PDCCH candidates according to this embodiment is based on the transmission method for completely overlapping PDCCH candidates according to an embodiment of the present application, and in order to offset a first target search space or a target PDCCH candidate to determine an actual transmission position corresponding to each PDCCH candidate to be distinguished, the transmission method for completely overlapping PDCCH candidates according to this embodiment includes the following steps:
step 201, obtaining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein each PDCCH candidate to be distinguished comes from different search spaces.
In this embodiment, an implementation manner of step 201 is similar to that of step 101 in the first embodiment of the present application, and is not described in detail here.
Step 202, a first target search space or target PDCCH candidate for shifting is determined from the search space.
Optionally, in this embodiment, the first target search space is any one of the search spaces.
Or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
It should be noted that, in this embodiment, through interaction with the base station, although the determined first target search space is any one of the search spaces, or the target PDCCH candidate is a PDCCH candidate to be distinguished in any one of the search spaces, the first target search space determined by the terminal device is the same as the first target search space determined by the base station. Or the target PDCCH candidate determined by the terminal equipment is the same as the target PDCCH candidate determined by the base station.
Step 203, the first target search space or the target PDCCH candidate is shifted.
Accordingly, step 203 comprises the steps of:
step 2031, determining a first offset of the first target search space or a second offset of the target PDCCH candidate.
As an alternative implementation manner, in this embodiment, step 2031 includes the following steps:
step 2031a, obtaining the search space offset preset by the protocol with the base station or the PDCCH candidate offset preset.
Step 2031b, a predetermined search space offset is determined as a first offset, or a predetermined PDCCH candidate offset is determined as a second offset.
In this alternative embodiment, the terminal device may set the search space offset in advance by a protocol with the base station, and determine the preset search space offset as the first offset of the first target search space. Or the terminal equipment and the base station preset PDCCH candidate offset through a protocol, and the preset PDCCH candidate offset is determined as a second offset of the target PDCCH candidate.
As another alternative, in this embodiment, step 2031 includes the following steps:
step 20311, receive the first configuration information sent by the base station.
Step 20312, determine a first offset from the first configuration information of the first target search space or determine a second offset from the first configuration information of the search space corresponding to the target PDCCH candidate.
In this optional embodiment, the first configuration information sent by the base station to the terminal device may be configuration information corresponding to a first target search space or configuration information of a search space corresponding to a target PDCCH candidate, where the first configuration information includes an offset (in english, searchSpaceOffset) of a newly added corresponding search space or an offset (in english, PDCCHcandidateOffset) of a PDCCH candidate to be distinguished in the search space.
Therefore, in this embodiment, the terminal device obtains the first configuration information of the first target search space, and determines the first offset from the first configuration information of the first target search space. Or the terminal equipment acquires the first configuration information of the search space corresponding to the target PDCCH candidate and determines the second offset from the first configuration information of the search space corresponding to the target PDCCH candidate.
In the two above-mentioned alternative embodiments, the first offset is a first predefined CCE number, and the first predefined CCE number includes any one of the following CCE numbers:
the CCE number occupied by the whole target search space, the CCE number occupied by part of the search space in the target search space, and the CCE number occupied by any PDCCH candidate to be distinguished.
The second offset is a second predefined number of CCEs, and the second predefined number of CCEs is the number of CCEs occupied by any PDCCH candidate to be distinguished.
Optionally, when the first offset and the second offset are the number of CCEs occupied by any PDCCH candidate to be distinguished, the first offset and the second offset are both the maximum number of CCEs occupied by each PDCCH candidate to be distinguished.
Step 2032, shifting the first target search space in the associated control resource set according to the first offset, or shifting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
In this embodiment, the configuration information of the first target search space includes a number of the CORESET that is associated with the first target search space, and the CORESET that is associated with the first target search space is determined by the number of the CORESET that is associated with the first target search space. And then offsetting the first target search space in the associated control resource set according to the first offset.
Or in this embodiment, the configuration information of the search space corresponding to the target PDCCH candidate includes a number of a CORESET associated with the search space corresponding to the target PDCCH candidate, the CORESET associated with the search space corresponding to the target PDCCH candidate is determined according to the number of the CORESET associated with the search space, and the target PDCCH candidate is shifted in the control resource set associated with the corresponding search space according to the second shift amount.
As an optional implementation manner, after offsetting the target PDCCH candidate in step 203, the method further includes the following steps:
and if the target PDCCH candidate after the offset is completely overlapped with the PDCCH candidate in any search space again, continuing to offset the target PDCCH candidate after the offset until the target PDCCH candidate is not completely overlapped with the PDCCH candidate in any search space any more.
The offset times are less than or equal to a preset offset time threshold value, and the preset offset time threshold value is preset or configured by a high-level signaling.
Specifically, in this embodiment, the time-frequency domain positions corresponding to the shifted target PDCCH candidates are compared with the time-frequency domain positions corresponding to the PDCCH candidates in all search spaces, and it is determined whether the time-frequency domain position corresponding to the shifted target PDCCH candidate completely overlaps with the PDCCH candidate in any one search space again. If so, the target PDCCH candidate after being shifted needs to be shifted continuously. Before continuing to shift the shifted target PDCCH candidate, judging whether the shift frequency is less than or equal to a preset shift frequency threshold value, if so, executing the step of continuing to shift the shifted target PDCCH candidate. And if not, stopping continuously shifting the shifted target PDCCH candidate.
The preset offset number threshold is preset or configured by a high-level signaling, and a specific numerical value is not limited.
And 204, determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result, and detecting and receiving the corresponding PDCCH according to the actual transmission position.
In this embodiment, the time-frequency domain position corresponding to the PDCCH candidate to be distinguished is re-determined according to the offset result, and the re-determined time-frequency domain position corresponding to the PDCCH candidate to be distinguished is the corresponding actual transmission position. The actual transmission positions are different, so that the search space to which each PDCCH to be distinguished belongs can be determined according to the actual transmission positions, the DCI format corresponding to the PDCCH to be distinguished is determined according to the configuration information of the search space to which each PDCCH to be distinguished belongs, and the corresponding PDCCH is detected and received according to the DCI format.
It should be noted that, before step 204, the method for transmitting the completely overlapped pdcch candidates provided in this embodiment further includes the following steps:
and detecting and receiving the corresponding PDCCH according to the initial transmission position corresponding to each PDCCH candidate to be distinguished.
And judging whether the corresponding initial transmission position corresponding to each PDCCH candidate to be distinguished is detected and the corresponding PDCCH is received.
Accordingly, step 204 comprises:
and if the corresponding PDCCH candidate is not received, detecting and receiving the corresponding PDCCH according to the actual transmission position.
When the corresponding PDCCH is detected and received according to the actual transmission position, the sum of the times of detecting whether the corresponding PDCCH needs to be received at the transmission position corresponding to the PDCCH candidate in the current time slot is less than the maximum blind detection time in the current time slot.
Specifically, in this embodiment, after completely overlapping PDCCH candidates to be distinguished are determined, the PDCCH candidates to be distinguished have the same initial transmission position. The terminal device detects and receives the corresponding PDCCH according to the initial transmission position corresponding to each PDCCH candidate to be distinguished. However, since the PDCCH candidates to be distinguished have the same initial transmission position, the terminal cannot receive the corresponding PDCCH. After the first target search space or the target PDCCH candidate is shifted, the PDCCH that cannot be correctly received changes the initial transmission position, and has a new actual transmission position. Therefore, after the corresponding PDCCH is not received, the corresponding PDCCH is detected and received according to the actual transmission position. But the number of blind tests in the current time slot cannot exceed the maximum number of blind tests. Therefore, the sum of the times of detecting whether the corresponding PDCCH needs to be received at the transmission position corresponding to the PDCCH candidate in the current time slot is less than the maximum blind detection time in the current time slot.
In the transmission method of the completely overlapped PDCCH candidates provided in this embodiment, the completely overlapped PDCCH candidates to be distinguished are obtained, and each PDCCH candidate to be distinguished is respectively from different search spaces, a first target search space or a target PDCCH candidate for shifting is determined from the search spaces, the first target search space or the target PDCCH candidate is shifted, an actual transmission position corresponding to each PDCCH candidate to be distinguished is determined according to a shift result, and a corresponding PDCCH is detected and received according to the actual transmission position.
In order to more clearly describe the transmission method of the completely overlapped pdcch candidates provided in this embodiment, an exemplary description is provided below.
Example one
In the method for transmitting completely overlapping pdcch candidates provided in example one, step 202 is: determining a first target search space for shifting from the search spaces, wherein step 203 comprises: the first target search space is offset. When the first offset of the first target search space is determined in step 2031, a search space offset preset by a protocol with the base station is acquired, and the preset search space offset is determined as the first offset.
In example one, the completely overlapped PDCCH candidates to be distinguished are from SS #1 and SS #2 in fig. 1, respectively. SS #1 includes 3 PDCCH candidates with an Aggregation Level (AL) of 2, and SS #2 includes 2 PDCCH candidates with an AL of 4. SS #2 is determined to be the first target search space. The first offset amount of SS #2 is a first offset amount preset by a protocol with the base station. The specific magnitude of the first offset is not limited. Fig. 5a to 5c illustrate the PDCCH candidates in two SSs after shifting SS #2 after the first shift amount has different values. In fig. 5a, the first offset of SS #2 is the size of the entire SS (i.e., 22 CCEs). In fig. 5b, the first offset of SS #2 is 1/2SS size (i.e. 11 CCEs), and it is understood that the ratio of the partial offset to the SS size can be arbitrarily defined. In fig. 5c, the first offset of SS #2 is the fully overlapping PDCCH candidate size to be distinguished (i.e. 4 CCEs). As shown in fig. 5a to fig. 5c, after SS #2 is shifted, two PDCCH candidates to be distinguished, which are originally completely overlapped in two SSs, will not be completely overlapped or partially completely overlapped, no matter that CCE-REGs adopt centralized/distributed mapping, frequency domain positions corresponding to the two PDCCH candidates to be distinguished are not completely the same, and further actual transmission positions corresponding to the PDCCH candidates to be distinguished are different, and the UE may distinguish DCI formats corresponding to the two PDCCH candidates through the actual transmission positions, and receive and detect corresponding PDCCHs according to the DCI formats corresponding to the two PDCCH candidates.
Since the first target search space is any one of the search spaces corresponding to the completely overlapped PDCCH candidates to be distinguished, the first target search space may also be SS #1. Accordingly, if two completely overlapping PDCCHs are distinguished by offsetting SS #1, the first offset corresponding to SS #1 is a search space offset predetermined by the protocol with the base station. The specific implementation manner is similar to that when the first target search space is SS #2, and details are not repeated herein.
However, in example one, as shown in fig. 5c, the shift of SS #2 by 4 CCEs results in a new full overlap between the third PDCCH candidate in SS #1 and the second PDCCH candidate in SS #2, so shifting the entire SS introduces a new full overlap problem. Since the configuration of CORESET and SS is complicated, the preset search space offset in the scheme of offsetting the whole SS cannot completely avoid the generation of new complete overlap, and is not the optimal scheme.
Therefore, in the present embodiment, when determining the first offset of the first target search space in step 2031, a technical solution is provided for receiving the first configuration information sent by the base station and determining the first offset from the first configuration information of the first target search space, which refers to example two specifically
Example two
In the transmission method of the completely overlapped pdcch candidate provided in example two, step 202 is: determining a first target search space for shifting from the search spaces, wherein step 203 comprises: the first target search space is offset. When the first offset of the first target search space is determined in step 2031, the first configuration information sent by the base station is received, and the first offset is determined from the first configuration information of the first target search space.
In example two, the completely overlapped PDCCH candidates to be distinguished are from SS #1 and SS #2 in fig. 1, respectively, as an example. SS #1 includes 3 PDCCH candidates with an Aggregation Level (AL) of 2, and SS #2 includes 2 PDCCH candidates with an AL of 4. SS #2 is determined to be the first target search space. The higher layer signaling configures an offset (in english: searchSpaceOffset) corresponding to the search space in the first configuration information corresponding to the first target search space. The offset of the search space is used to indicate that an SS needs an offset if there is a PDCCH candidate that completely overlaps with PDCCH candidates in other SSs. The offset of the search space has multiple candidate values, such as: {0,1,2,3} CCEs, etc., and the present embodiment is not limited. When the SearchSpaceOffset value is 0, it indicates that the corresponding search space does not need to be offset.
As shown in fig. 6, in example two, SS #2 is the first target search space, and the first offset corresponding to SS #2 takes on 1 CCE. SS #2 is offset by 1 CCE. After performing 1 CCE offset, two PDCCH candidates to be distinguished, which are originally completely overlapped in two SSs, are partially and completely overlapped, no matter whether CCE-REGs adopt centralized/distributed mapping, frequency domain positions corresponding to the two PDCCH candidates to be distinguished are not completely the same, and further actual transmission positions corresponding to the PDCCH candidates to be distinguished are different, the UE may distinguish DCI formats corresponding to the two PDCCH candidates through the actual transmission positions, and receive and detect corresponding PDCCHs according to the DCI formats of the two PDCCH candidates.
Since the first target search space is any one of search spaces corresponding to completely overlapping PDCCH candidates to be distinguished, the first target search space may also be SS #1. Accordingly, two completely overlapping PDCCHs may also be distinguished by offsetting SS #1, and the first offset corresponding to SS #1 is the first offset determined in the first configuration information of SS #1. The specific implementation manner is similar to that when the first target search space is SS #2, and details thereof are not repeated here.
Example three
In the method for transmitting the completely overlapped pdcch candidate provided in example three, step 202 is: target PDCCH candidates for shifting are determined from the search space. Step 203 is: the target PDCCH candidates are shifted. When the second offset of the target PDCCH candidate is determined in step 2031, a PDCCH candidate offset preset by a protocol with the base station is acquired, and the preset PDCCH candidate offset is determined as the second offset.
In example three, the completely overlapped PDCCH candidates to be distinguished are respectively from SS #1 and SS #2 in fig. 1. The first PDCCH candidate in SS #2 is determined to be the target PDCCH candidate. The second offset of the first PDCCH candidate in SS #2 is a second offset that is pre-set by a protocol with the base station. The specific magnitude of the second offset is not limited. The second offset is illustrated in fig. 7 as occupying 4 CCE sizes. After the first PDCCH candidate in SS #2 is shifted, the first PDCCH candidate of SS #1 and the first PDCCH candidate of SS #2 no longer completely overlap. No matter CCE-REG adopts centralized/distributed mapping, the frequency domain positions of the first PDCCH candidate of SS #1 and the first PDCCH candidate of SS #2 are not completely the same, and further the actual transmission positions corresponding to the first PDCCH candidate of SS #1 and the first PDCCH candidate of SS #2 are different, UE can distinguish the DCI formats corresponding to the two PDCCH candidates through the actual transmission positions, and receive and detect the corresponding PDCCH according to the DCI formats corresponding to the two PDCCH candidates.
Since the target PDCCH candidate is a PDCCH candidate to be distinguished in any one search space, the target PDCCH candidate may also be the first PDCCH candidate of SS #1. Accordingly, two completely overlapping PDCCHs may also be distinguished by offsetting the first PDCCH candidate of SS #1, and the second offset corresponding to the first PDCCH candidate of SS #1 is a PDCCH candidate offset preset by the base station by a protocol. The specific implementation is similar to that when the target PDCCH candidate is the first PDCCH candidate of SS #2, and is not described in detail herein.
Example four
In the method for transmitting the completely overlapped pdcch candidate provided in example four, step 202 is: target PDCCH candidates for shifting are determined from the search space. Step 203 is: the target PDCCH candidates are shifted. When the second offset of the target PDCCH candidate is determined in step 2031, the first configuration information sent by the base station is received, and the second offset is determined from the first configuration information of the search space corresponding to the target PDCCH candidate.
In example four, the completely overlapped PDCCH candidates to be distinguished are from SS #1 and SS #2 in fig. 1, respectively, as an example. The first PDCCH candidate in SS #2 is determined to be the target PDCCH candidate. The first configuration information of the search space corresponding to the target PDCCH candidate includes an offset (in english, PDCCHcandidateOffset) of a PDCCH to be distinguished corresponding to the search space. Pdcchcanddidateoffset is used to indicate the offset by which a PDCCH candidate that completely overlaps with a PDCCH candidate in another SS within a search space needs to be offset if there is a PDCCH candidate that completely overlaps with a PDCCH candidate in the search space. PDCCHcandidateOffset may have multiple candidate values, such as including: {0,1,2,3} number of CCEs, etc., and the present embodiment is not limited. When the PDCCHcandidateOffset value is 0, it indicates that PDCCH candidates to be distinguished in the corresponding search space do not need to be offset.
As shown in fig. 8, in example four, the first PDCCH candidate of SS #2 is determined as a target PDCCH candidate. The value of pdcchcandidaoffset in SS #2 is 1 CCE, and the value of pdcchcandidaoffset in SS #1 is 0. Therefore, after 1 CCE offset is performed on the first PDCCH candidate of SS #2, two PDCCH candidates to be distinguished that are originally completely overlapped in two SSs are partially and completely overlapped, no matter whether CCE-REGs adopt centralized/distributed mapping, frequency domain positions corresponding to the two PDCCH candidates to be distinguished are not completely the same, and further actual transmission positions corresponding to the PDCCH candidates to be distinguished are different, the UE may distinguish DCI formats corresponding to the two PDCCH candidates through the actual transmission positions, and receive and detect the corresponding PDCCH according to the DCI formats corresponding to the two PDCCH candidates.
Since the target PDCCH candidate is a PDCCH candidate to be distinguished in any one search space, the target PDCCH candidate may also be the first PDCCH candidate of SS #1. Correspondingly, two completely overlapping PDCCHs may also be distinguished by offsetting the first PDCCH candidate of SS #1, and the second offset corresponding to the first PDCCH candidate of SS #1 is the second offset determined in the first configuration information of SS #1. The specific implementation manner is similar to that when the first target search space is SS #2, and details thereof are not repeated here.
EXAMPLE III
Fig. 9 is a flowchart illustrating a transmission method for completely overlapping PDCCH candidates according to yet another embodiment of the present application, where as shown in fig. 9, the transmission method for completely overlapping PDCCH candidates according to this embodiment is a technical solution that, based on the transmission method for completely overlapping PDCCH candidates according to the first embodiment, shifts a second target search space and determines actual transmission positions corresponding to PDCCH candidates to be distinguished according to a shift result, and then the transmission method for completely overlapping PDCCH candidates according to this embodiment includes the following steps:
step 301, obtaining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein each PDCCH candidate to be distinguished comes from different search spaces.
In this embodiment, an implementation manner of step 301 is similar to that of step 101 in the first embodiment of the present application, and details are not repeated here.
Step 302, determining a second target search space for transition from the search spaces.
Wherein the second target search space is any one of the search spaces. Or the second target search space is a new search space constructed by the PDCCH candidates to be distinguished in any one search space.
It should be noted that, in this embodiment, through interaction with the base station, although the determined second target search space is any one of the search spaces or a new search space formed by PDCCH candidates to be distinguished in any one of the search spaces, the second target search space determined by the terminal device is the same as the second target search space determined by the base station.
And if the second target search space is a new search space formed by the PDCCH candidates to be distinguished in any search space, putting the PDCCH candidates to be distinguished into the new search space in the current bandwidth slice BWP, wherein the index number of the new search space is the index number of the original search space corresponding to the PDCCH candidates to be distinguished.
Or if the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any one search space, placing the PDCCH candidates to be distinguished into the new search space in the current BWP, and configuring the index number of the new search space as an unoccupied index number in the current BWP.
In this embodiment, whether the index number of the new search space follows the index number of the original search space corresponding to the PDCCH candidate to be distinguished or is configured as an unoccupied index number in the current BWP, the actual transmission position corresponding to the PDCCH candidate to be distinguished in the new search space can be distinguished from the actual transmission position corresponding to the PDCCH candidate to be distinguished in the other search space that is completely overlapped with the actual transmission position.
And the new search space configures the number of PDCCH candidates contained in each aggregation level according to all PDCCH candidates to be distinguished, and other configuration parameters of the new search space are the same as the configuration parameters corresponding to the original search space.
Step 303, transferring the second target search space.
As an alternative implementation, in this embodiment, step 303 includes the following steps:
step 3031, determining the standby control resource set to which the second target search space is transferred.
As an optional implementation manner, in this embodiment, the standby control resource set is a preset control resource set.
The preset control resource set is a previous control resource set or a next control resource set adjacent to the control resource set associated with the second target search space, or a predefined default control resource set.
In this alternative embodiment, for example, if the number of the control resource set configured in the current BWP is { #0, #1, #2}. The second target search space has an originally associated CORESET number #1. Then as an alternative implementation, the alternate CORESET number to which the second target search space needs to be transferred is #2. Or the standby CORESET to which the second target search space needs to be transferred is the predefined default control resource set, the predefined default control resource set is numbered #2.
As another alternative, in this embodiment, step 3031 includes the following steps:
step 3031a, receiving second configuration information sent by a base station;
step 3031b, determining the set of standby control resources to be transferred from the second configuration information of the second target search space.
Specifically, in this optional implementation, the second configuration information sent by the base station to the terminal device is the configuration information corresponding to the second target search space, and the second configuration information includes the number of the control resource set currently associated with the newly added search space. And the second configuration information of the second target search space comprises the number of the control resource set currently associated with the second target search space, and the number of the currently associated control resource set is the number of the transferred standby control resource set.
In the two optional embodiments, the standby control resource set is a control resource set configured in the current BWP, and the standby control resource set is a control resource set specific to the terminal device.
Step 3032, transferring the second target search space to the standby control resource set.
Step 304, determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position.
In this embodiment, since the second target search space is transferred to the standby control resource set, and different control resource sets occupy different frequency domain resources, PDCCH candidates to be distinguished are mapped to completely independent frequency domain resources, at this time, the UE can distinguish actual transmission positions corresponding to the PDCCH candidates to be distinguished by a frequency domain position, determine a search space to which each PDCCH to be distinguished belongs according to the actual transmission positions, determine a DCI format corresponding to the PDCCH to be distinguished according to configuration information of the search space to which each PDCCH to be distinguished belongs, and detect and receive the corresponding PDCCH according to the DCI format.
It should be noted that, before step 304, the method for transmitting the completely overlapped pdcch candidates provided in this embodiment further includes the following steps:
and detecting and receiving the corresponding PDCCH according to the initial transmission position corresponding to each PDCCH candidate to be distinguished.
And judging whether the corresponding PDCCH is detected and received according to the initial transmission position corresponding to each PDCCH candidate to be distinguished.
Accordingly, step 304 includes:
and if the corresponding PDCCH is not received, detecting and receiving the corresponding PDCCH according to the actual transmission position.
When the corresponding PDCCH is detected and received according to the actual transmission position, the sum of the times of detecting whether the corresponding PDCCH is required to be received at the transmission position corresponding to the PDCCH candidate in the current time slot is less than the maximum blind detection time in the current time slot.
In this embodiment, the specific implementation manner of step 304 is similar to that of step 204 in the second embodiment, and is not described in detail here.
In the transmission method of the completely overlapped PDCCH candidates provided in this embodiment, the completely overlapped PDCCH candidates to be distinguished are obtained, each PDCCH candidate to be distinguished is respectively from a different search space, a second target search space for transferring is determined from the search spaces, the second target search space is transferred, an actual transmission position corresponding to each PDCCH candidate to be distinguished is determined according to a transfer result, and a corresponding PDCCH is detected and received according to the actual transmission position.
In order to more clearly describe the transmission method of the completely overlapped pdcch candidates provided in this embodiment, an exemplary description is provided below.
Example five
In the transmission method for completely overlapping pdcch candidates provided in example five, the second target search space is any one of the search spaces. When the standby control resource set to which the second target search space is transferred is determined in step 3031, the standby control resource set is a preset control resource set.
In example five, the completely overlapped PDCCH candidates to be distinguished are from SS #1 and SS #2 in fig. 1, respectively, as an example. Suppose that the current BWP is configured with three CORESET numbers { #0, #1, #2}, and SS #1 and SS #2 have associated CORESET numbers #1. By associating SS #1 to other CORESET configured within the current BWP to distinguish the presence of completely overlapping PDCCH candidates in both SSs. Wherein SS #1 is the second target search space. The standby control resource set associated with SS #1 is a preset control resource set. For example, the currently associated CORESET number of SS #1 may be the next to the originally associated CORESET number, i.e., CORESET #2.CORESET #2 is UE-specific CORESET. If the currently associated core set number of SS #1 is the previous one from the associated core set number, i.e., core set #0, then it does not belong to the UE-specific core set. Different control resource sets occupy different frequency domain resources, so that the PDCCH candidates to be distinguished are mapped to completely independent frequency domain resources, at the moment, the UE can distinguish the actual transmission positions corresponding to the PDCCH candidates to be distinguished through the frequency domain positions, the search space to which each PDCCH to be distinguished belongs is determined according to the actual transmission positions, the DCI format corresponding to the PDCCH to be distinguished is determined according to the configuration information of the search space to which each PDCCH to be distinguished belongs, and the corresponding PDCCH is detected and received according to the DCI format.
Since the second target search space is any one of the search spaces, the second target search space may also be SS #2. Accordingly, the presence of completely overlapping PDCCH candidates in two SSs may also be distinguished by associating SS #2 to other CORESET configured within the current BWP. The new CORESET number associated with SS #2 is preset by the base station and the UE. The specific implementation manner is similar to that when the first target search space is SS #1, and details are not repeated here.
Example six
In the transmission method for completely overlapping pdcch candidates provided in example six, the second target search space is any one of the search spaces. Receiving second configuration information sent by the base station when the standby control resource set to which the second target search space is transferred is determined in step 3031; the set of standby control resources to transfer to is determined from second configuration information of a second target search space.
In the sixth example, the completely overlapped PDCCH candidates to be distinguished are from SS #1 and SS #2 in fig. 1, respectively. Assume that the current BWP is configured with three CORESET numbers { #0, #1, #2}, and SS #1 and SS #2 are both associated with CORESET number #1. By associating SS #1 to other CORESET configured within the current BWP to distinguish the presence of completely overlapping PDCCH candidates in both SSs. Wherein SS #1 is the second target search space. The high-level signaling configures a currently associated standby control resource set (in english: controlresourcesetidld-reserved) in second configuration information corresponding to the second target search space. The CORESET number after SS #1 transfer is determined by ControlResourceSetId-reserved. Different control resource sets occupy different frequency domain resources, so that the PDCCH candidates to be distinguished are mapped to completely independent frequency domain resources, at the moment, the UE can distinguish the actual transmission positions corresponding to the PDCCH candidates to be distinguished through the frequency domain positions, the search space to which each PDCCH to be distinguished belongs is determined according to the actual transmission positions, the DCI format corresponding to the PDCCH to be distinguished is determined according to the configuration information of the search space to which each PDCCH to be distinguished belongs, and the corresponding PDCCH is detected and received according to the DCI format.
Since the second target search space is any one of the search spaces, the second target search space may also be SS #2. Accordingly, the presence of completely overlapping PDCCH candidates in two SSs may also be distinguished by associating SS #2 to other CORESET configured within the current BWP. The new CORESET number associated with SS #2 is determined by controlresourcesetidd-reserved. The specific implementation manner is similar to that when the second target search space is SS #1, and details are not repeated here.
Example seven
In the method for transmitting completely overlapping PDCCH candidates provided in example seven, the second target search space is a new search space formed by PDCCH candidates to be distinguished in any search space. The index number of the new search space follows the index number of the original search space corresponding to the PDCCH candidate to be distinguished, or the index number of the new search space is configured as an unoccupied index number in the current BWP.
In example seven, the completely overlapped PDCCH candidates to be distinguished are from SS #1 and SS #2 in fig. 1, respectively, as an example. Assume that the current BWP is configured with three CORESET numbers { #0, #1, #2}, and SS #1 and SS #2 are both associated with CORESET number #1. By associating SS #1 to other CORESET configured within the current BWP to distinguish the presence of completely overlapping PDCCH candidates in both SSs. Wherein SS #1 is a second target search space. All PDCCH candidates to be transferred in SS #1 constitute a new SS, the index of the new SS may continue to be #1, or may be an index number not occupied by all SSs in the current BWP, and there is only one PDCCH candidate with aggregation level 2 in the new SS, and other parameters in the new SS are configured exactly the same as those in SS #1. The new SS is currently associated with the CORESET number in the same manner as in examples five and six, and therefore will not be described in detail. Different control resource sets occupy different frequency domain resources, so that the PDCCH candidates to be distinguished are mapped to completely independent frequency domain resources, at the moment, the UE can distinguish the actual transmission positions corresponding to the PDCCH candidates to be distinguished through the frequency domain positions, the search space to which each PDCCH to be distinguished belongs is determined according to the actual transmission positions, the DCI format corresponding to the PDCCH to be distinguished is determined according to the configuration information of the search space to which each PDCCH to be distinguished belongs, and the corresponding PDCCH is detected and received according to the DCI format.
Since the second target search space is any one of the search spaces, the second target search space may also be SS #2. Accordingly, the PDCCH candidates that completely overlap in two SSs can also be distinguished by establishing a new search space for PDCCH candidates to be distinguished in SS #2 and associating to other CORESET configured within the current BWP. The specific implementation manner is similar to that when the second target search space is SS #1, and details are not repeated herein.
Example four
Fig. 10 is a flowchart illustrating a transmission method for completely overlapping pdcch candidates according to still another embodiment of the present invention, and as shown in fig. 10, an execution subject of the transmission method for completely overlapping pdcch candidates according to the present embodiment is a transmission apparatus for completely overlapping pdcch candidates. The transmission device of the completely overlapped physical downlink control channel candidate is positioned in the base station. The method for transmitting the completely overlapped pdcch candidates provided in this embodiment includes the following steps:
step 401, determining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein each PDCCH candidate to be distinguished comes from different search spaces.
In this embodiment, the time-frequency domain position corresponding to the PDCCH candidate in each search space may be determined according to the configuration information of the SS and the configuration information of the CORESET, and then it is determined whether there are completely overlapped PDCCH candidates to be distinguished.
Step 402, determining a first target search space or target PDCCH candidate for shifting from the search space, or determining a second target search space for shifting from the search space.
Step 403, shifting the first target search space or the target PDCCH candidate, or shifting the second target search space.
In this embodiment, the implementation manners of steps 402 to 403 are similar to the implementation manners of steps 102 to 103 in the first embodiment, and are not described again.
Step 404, determining an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and sending the corresponding PDCCH according to the actual transmission position.
In this embodiment, if the first target search space or the target PDCCH candidate is shifted, a shift result is obtained, an actual transmission position corresponding to each PDCCH candidate to be distinguished is determined according to the shift result, a search space to which each PDCCH to be distinguished belongs is further determined according to the actual transmission position, a DCI format corresponding to the PDCCH to be distinguished is determined according to configuration information of the search space to which each PDCCH to be distinguished belongs, and the corresponding PDCCH is transmitted according to the DCI format.
Or in this embodiment, if the second target search space is transferred, obtaining a transfer result, determining an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the transfer result, further determining a search space to which each PDCCH to be distinguished belongs according to the actual transmission position, determining a DCI format corresponding to the PDCCH to be distinguished according to configuration information of the search space to which each PDCCH to be distinguished belongs, and sending the PDCCH candidate according to the DCI format.
In the transmission method of the completely overlapped PDCCH candidates provided in this embodiment, the completely overlapped PDCCH candidates to be distinguished are determined, and each PDCCH candidate to be distinguished is respectively from a different search space, a first target search space or a target PDCCH candidate that is shifted is determined from the search space, or a second target search space that is shifted is determined from the search space, the first target search space or the target PDCCH candidate is shifted, or the second target search space is shifted, an actual transmission position corresponding to each PDCCH candidate to be distinguished is determined according to a shift result or a shift result, and a corresponding PDCCH is transmitted according to the actual transmission position.
EXAMPLE five
Fig. 11 is a flowchart illustrating a transmission method of completely overlapping PDCCH candidates according to a further embodiment of the present application, where, as shown in fig. 11, the transmission method of completely overlapping PDCCH candidates according to the present embodiment is a technical solution that, on the basis of the transmission method of completely overlapping PDCCH candidates according to the fourth embodiment of the present application, shifts a first target search space or a target PDCCH candidate to determine an actual transmission position corresponding to each PDCCH candidate to be distinguished, and then the transmission method of completely overlapping PDCCH candidates according to the present embodiment includes the following steps:
step 501, determining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively.
In this embodiment, an implementation manner of step 501 is similar to that of step 401 in the first embodiment of the present application, and is not described in detail here.
Step 502, a first target search space or target PDCCH candidate for shifting is determined from the search space.
Optionally, in this embodiment, the first target search space is any one of the search spaces.
Or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
Step 503, the first target search space or the target PDCCH candidate is shifted.
As an alternative implementation, in this embodiment, step 503 includes the following steps:
in step 5031, a first offset of the first target search space or a second offset of the target PDCCH candidate is determined.
As an alternative implementation, in this embodiment, step 5031 includes the following steps:
step 5031a, obtaining a search space offset preset by a protocol with the terminal device or a preset PDCCH candidate offset.
Step 5031b, determining a preset search space offset as a first offset, or determining a preset PDCCH candidate offset as a second offset.
In this embodiment, the implementation manners of steps 5031a to 5031b are similar to the implementation manners of steps 2031a to 2031b in the second embodiment, and are not described again here.
Optionally, in this embodiment, after step 5031, the method further includes: and sending the first configuration information to the terminal equipment so that the terminal equipment determines a first offset from the first configuration information of the first target search space or determines a second offset from the first configuration information of the search space corresponding to the target PDCCH candidate.
Wherein the first offset is a first predefined CCE number, and the first predefined CCE number includes any one of the following CCE numbers:
the CCE number occupied by the whole target search space, the CCE number occupied by part of the search space in the target search space, and the CCE number occupied by any PDCCH candidate to be distinguished.
The second offset is a second predefined number of CCEs, and the second predefined number of CCEs is the number of CCEs occupied by any PDCCH candidate to be distinguished.
Optionally, when the first offset and the second offset are the number of CCEs occupied by any PDCCH candidate to be distinguished, the first offset and the second offset are both the maximum number of CCEs occupied by each PDCCH candidate to be distinguished.
Step 5032, the first target search space is shifted in the associated control resource set according to the first offset, or the target PDCCH candidate is shifted in the control resource set associated with the corresponding search space according to the second offset.
Step 504, determining an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and sending the corresponding PDCCH according to the actual transmission position.
In this embodiment, the implementation manner of step 5032 is similar to that of step 2032 in the second embodiment, and is not described again. The implementation manner of step 504 is similar to that of step 404 in the fourth embodiment, and is not described in detail here.
In the transmission method of the completely overlapped PDCCH candidates provided in this embodiment, the completely overlapped PDCCH candidates to be distinguished are determined, each PDCCH candidate to be distinguished is from a different search space, a first target search space or a target PDCCH candidate to be shifted is determined from the search space, the first target search space or the target PDCCH candidate is shifted, an actual transmission position corresponding to each PDCCH candidate to be distinguished is determined according to a shift result or a transfer result, and a corresponding PDCCH is transmitted according to the actual transmission position.
EXAMPLE six
Fig. 12 is a flowchart illustrating a transmission method for completely overlapping PDCCH candidates according to still another embodiment of the present application, and as shown in fig. 12, the transmission method for completely overlapping PDCCH candidates according to this embodiment transfers a second target search space based on the transmission method for completely overlapping PDCCH candidates according to the fourth embodiment, and determines an actual transmission position corresponding to each PDCCH candidate to be distinguished according to a transfer result, and then the method for determining an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the transfer result provided by this embodiment includes the following steps:
step 601, determining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively.
In this embodiment, the implementation manner of step 601 is similar to that of step 401 in the first embodiment of the present application, and is not described in detail here.
Step 602, determining a second target search space for transition from the search spaces.
Wherein the second target search space is any one of the search spaces. Or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
And if the second target search space is a new search space formed by the PDCCH candidates to be distinguished in any search space, putting the PDCCH candidates to be distinguished into the new search space in the current bandwidth slice BWP, wherein the index number of the new search space is the index number of the original search space corresponding to the PDCCH candidates to be distinguished.
Or if the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any one search space, placing the PDCCH candidates to be distinguished into the new search space in the current BWP, and configuring the index number of the new search space as an unoccupied index number in the current BWP.
And configuring the number of PDCCH candidates contained in each aggregation level in the new search space, wherein other configuration parameters of the new search space are the same as the configuration parameters corresponding to the original search space.
Step 603, transferring the second target search space.
As an alternative implementation manner, in this embodiment, step 603 includes the following steps:
step 6031, determine the set of standby control resources to which the second target search space is transferred.
As an optional implementation manner, in this embodiment, the standby control resource set is a preset control resource set.
The preset control resource set is a previous control resource set or a next control resource set adjacent to the control resource set associated with the second target search space, or is a predefined default control resource set.
Optionally, after step 6031, the method further includes:
and sending second configuration information to the terminal equipment so that the terminal equipment determines the standby control resource set to be transferred from the second configuration information of the second target search space.
Optionally, the standby control resource set is a control resource set configured in the current BWP, and the standby control resource set is a control resource set specific to the terminal device.
Step 6032, the second target search space is transferred to the set of standby control resources.
Step 604, determining an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and sending the corresponding PDCCH according to the actual transmission position.
In this embodiment, an implementation manner of step 6032 is similar to that of step 3032 in the second embodiment, and details are not described here. The implementation manner of step 604 is similar to that of step 404 in the fourth embodiment, and details are not repeated here.
In the transmission method of the completely overlapped PDCCH candidates provided in this embodiment, the completely overlapped PDCCH candidates to be distinguished are determined, each PDCCH candidate to be distinguished is from a different search space, a second target search space for transferring is determined from the search space, the second target search space is transferred, an actual transmission position corresponding to each PDCCH candidate to be distinguished is determined according to an offset result or a transfer result, and a corresponding PDCCH is sent according to the actual transmission position.
EXAMPLE seven
Fig. 13 is a schematic structural diagram of a transmission apparatus for completely overlapping physical downlink control channel candidates according to an embodiment of the present application, and as shown in fig. 13, the transmission apparatus for completely overlapping physical downlink control channel candidates according to the present embodiment is located in a terminal device, and the transmission apparatus for completely overlapping physical downlink control channel candidates according to the present embodiment includes: a transceiver 700 for receiving and transmitting data under the control of a processor 710.
Wherein in fig. 13 the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 710, and various circuits, represented by memory 720, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 700 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 710 in performing operations.
The processor 710 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.
In this embodiment, the memory 720 is used for storing computer programs; a transceiver 700 for transceiving data under the control of the processor 710; a processor 710 for reading the computer program in the memory and performing the following operations:
acquiring completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively; determining a first target search space or a target PDCCH candidate for shifting from the search space, or determining a second target search space for transferring from the search space; offsetting the first target search space or the target PDCCH candidate, or transferring the second target search space; and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position.
Optionally, the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
Optionally, the processor 710 is configured to, when shifting the first target search space or the target PDCCH candidate, specifically include:
determining a first offset of a first target search space or a second offset of a target PDCCH candidate; and shifting the first target search space in the associated control resource set according to the first offset, or shifting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
Optionally, the processor 710 is configured to, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, specifically include:
acquiring a search space offset preset by a protocol with a base station or a preset PDCCH candidate offset; the method comprises the steps of determining a preset search space offset as a first offset, or determining a preset PDCCH candidate offset as a second offset.
Optionally, the processor 710 is configured to, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, specifically include:
receiving first configuration information sent by a base station; determining a first offset from the first configuration information of the first target search space or determining a second offset from the first configuration information of the search space corresponding to the target PDCCH candidate.
Optionally, the first offset is a first predefined CCE number, and the first predefined CCE number includes any one of the following CCE numbers:
CCE number occupied by the whole target search space, CCE number occupied by part of search space in the target search space, and CCE number occupied by any PDCCH candidate to be distinguished; the second offset is a second predefined number of CCEs, and the second predefined number of CCEs is the number of CCEs occupied by any PDCCH candidate to be distinguished.
Optionally, when the first offset and the second offset are the number of CCEs occupied by any PDCCH candidate to be distinguished, the first offset and the second offset are the maximum number of CCEs occupied by each PDCCH candidate to be distinguished.
Optionally, the processor 710 is configured to, after shifting the target PDCCH candidate, further include:
and if the target PDCCH candidate after the offset completely overlaps with the PDCCH candidate in any search space again, continuing to offset the target PDCCH candidate after the offset until the target PDCCH candidate and the PDCCH candidate in any search space are not completely overlapped any more.
Optionally, the offset number is less than or equal to a preset offset number threshold, where the preset offset number threshold is preset or configured by a high layer signaling.
Optionally, the second target search space is any one of the search spaces; or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
Optionally, the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any one search space, and the processor 710 is further configured to:
and putting the PDCCH candidates to be distinguished into a new search space in the current bandwidth slice BWP, wherein the index number of the new search space continues to use the index number of the original search space corresponding to the PDCCH candidates to be distinguished.
Optionally, the second target search space is a new search space formed by PDCCH candidates to be distinguished in any search space, and the processor 710 is further configured to:
and putting the PDCCH candidates to be distinguished into a new search space in the current BWP, wherein the index number of the new search space is configured as the unoccupied index number in the current BWP.
Optionally, the new search space configures the number of PDCCH candidates included in each aggregation level, and other configuration parameters of the new search space are the same as configuration parameters corresponding to the original search space.
Optionally, the processor 710 is configured to, when the second target search space is transferred, specifically include:
determining a standby control resource set to which the second target search space is transferred; the second target search space is transferred to the set of standby control resources.
Optionally, the standby control resource set is a preset control resource set, and the preset control resource set is a previous control resource set or a next control resource set adjacent to the control resource set associated with the second target search space, or a predefined default control resource set.
Optionally, the processor 710, when determining the set of standby control resources to which the second target search space is transferred, specifically includes:
receiving second configuration information sent by the base station; the set of standby control resources to transfer to is determined from second configuration information of a second target search space.
Optionally, the standby control resource set is a control resource set configured in the current BWP, and the standby control resource set is a control resource set specific to the terminal device.
Optionally, the processor 710 is configured to, before detecting and receiving the corresponding PDCCH according to the actual transmission position, further include:
detecting and receiving a corresponding PDCCH according to an initial transmission position corresponding to each PDCCH candidate to be distinguished; according to the actual transmission position, detecting and receiving the corresponding PDCCH, comprising: if the corresponding PDCCH is not received, detecting and receiving the corresponding PDCCH according to the actual transmission position; when the corresponding PDCCH is detected and received according to the actual transmission position, the sum of the times of detecting whether the corresponding PDCCH is required to be received at the transmission position corresponding to the PDCCH candidate in the current time slot is less than the maximum blind detection time in the current time slot.
It should be noted that the apparatus provided in the present application can implement all the method steps implemented by the corresponding method embodiments, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as the method embodiments in this embodiment are not repeated herein.
Example eight
Fig. 14 is a schematic structural diagram of a transmission apparatus for completely overlapping pdcch candidates according to another embodiment of the present application, and as shown in fig. 14, the transmission apparatus for completely overlapping pdcch candidates according to this embodiment is located in a base station, and the transmission apparatus for completely overlapping pdcch candidates according to this embodiment includes: a transceiver 800 for receiving and transmitting data under the control of a processor 810.
Where in fig. 14, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 810, and various circuits, represented by memory 820, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 800 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 810 in performing operations.
The processor 810 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a complex 8 Programmable Logic Device (CPLD), and may also have a multi-core architecture.
In this embodiment, a memory 820 for storing a computer program; a transceiver 800 for transceiving data under the control of the processor 810; a processor 810 for reading the computer program in memory and performing the following:
determining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively; determining a first target search space or a target PDCCH candidate for shifting from the search space, or determining a second target search space for transferring from the search space; offsetting the first target search space or the target PDCCH candidate, or transferring the second target search space; and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and sending the corresponding PDCCH according to the actual transmission position.
Optionally, the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
Optionally, the processor 810, when being configured to offset the first target search space or the target PDCCH candidate, specifically includes:
determining a first offset of a first target search space or a second offset of a target PDCCH candidate; and shifting the first target search space in the associated control resource set according to the first offset, or shifting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
Optionally, the processor 810 is configured to, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, specifically include:
acquiring a search space offset preset by a protocol with a terminal device or a preset PDCCH candidate offset;
and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
Optionally, the processor 810, after determining the first offset of the first target search space or the second offset of the target PDCCH candidate, further includes:
and the first configuration information is sent to the terminal equipment, so that the terminal equipment determines a first offset from the first configuration information of the first target search space or determines a second offset from the first configuration information of the search space corresponding to the target PDCCH candidate.
Optionally, the second target search space is any one of the search spaces; or the second target search space is a new search space constructed by the PDCCH candidates to be distinguished in any one search space.
Optionally, the processor 810 is configured to, when transferring the second target search space, specifically include:
determining a standby control resource set to which the second target search space is transferred; the second target search space is transferred to the set of standby control resources.
Optionally, the processor 810, after determining the set of standby control resources to which the second target search space is transferred, further includes:
and sending second configuration information to the terminal equipment so that the terminal equipment determines the standby control resource set to be transferred from the second configuration information of the second target search space.
It should be noted that the apparatus provided in the present application can implement all the method steps implemented by the corresponding method embodiments, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as the method embodiments in this embodiment are not repeated herein.
Example nine
Fig. 15 is a schematic structural diagram of a transmission apparatus for completely overlapping pdcch candidates according to another embodiment of the present application, and as shown in fig. 15, the transmission apparatus for completely overlapping pdcch candidates according to this embodiment is located in a terminal device, and the transmission apparatus 900 for completely overlapping pdcch candidates according to this embodiment includes: an acquisition unit 901, a determination unit 902, an offset shift unit 903, and a detection reception unit 904.
The acquiring unit 901 is configured to acquire completely overlapped PDCCH candidates of physical downlink control channels to be distinguished, where the PDCCH candidates to be distinguished are from different search spaces respectively. A determining unit 902, configured to determine a first target search space or a target PDCCH candidate for shifting from the search spaces, or determine a second target search space for transferring from the search spaces. An offset shifting unit 903, configured to shift the first target search space or the target PDCCH candidate, or shift the second target search space. The determining unit 902 is further configured to determine an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result. A detection receiving unit 904, configured to detect and receive a corresponding PDCCH according to the actual transmission position.
Optionally, the first target search space is any one of the search spaces; or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
Optionally, the offset shifting unit 903, when shifting the first target search space or the target PDCCH candidate, is specifically configured to:
determining a first offset of a first target search space or a second offset of a target PDCCH candidate; and shifting the first target search space in the associated control resource set according to the first offset, or shifting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
Optionally, the offset shifting unit 903, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, is specifically configured to:
acquiring a search space offset preset by a protocol with a base station or a preset PDCCH candidate offset; the method comprises the steps of determining a preset search space offset as a first offset, or determining a preset PDCCH candidate offset as a second offset.
Optionally, the offset shifting unit 903, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, is specifically configured to:
receiving first configuration information sent by a base station; determining a first offset from the first configuration information of the first target search space or determining a second offset from the first configuration information of the search space corresponding to the target PDCCH candidate.
Optionally, the first offset is a first predefined CCE number, and the first predefined CCE number includes any one of the following CCE numbers:
CCE number occupied by the whole target search space, CCE number occupied by part of search space in the target search space, and CCE number occupied by any PDCCH candidate to be distinguished; the second offset is a second predefined number of CCEs, and the second predefined number of CCEs is the number of CCEs occupied by any PDCCH candidate to be distinguished.
Optionally, when the first offset and the second offset are the number of CCEs occupied by any PDCCH candidate to be distinguished, the first offset and the second offset are both the maximum number of CCEs occupied by each PDCCH candidate to be distinguished.
Optionally, the offset shifting unit 903, after shifting the target PDCCH candidate, is further configured to:
and if the target PDCCH candidate after the offset is completely overlapped with the PDCCH candidate in any search space again, continuing to offset the target PDCCH candidate after the offset until the target PDCCH candidate is not completely overlapped with the PDCCH candidate in any search space any more.
Optionally, the offset number is less than or equal to a preset offset number threshold, and the preset offset number threshold is preset or configured by a higher layer signaling.
Optionally, the second target search space is any one of the search spaces; or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
Optionally, the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space, then the determining unit 902 is further configured to:
and putting the PDCCH candidates to be distinguished into a new search space in the current bandwidth slice BWP, wherein the index number of the new search space is the index number of the original search space corresponding to the PDCCH candidates to be distinguished.
Optionally, the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space, then the determining unit 902 is further configured to:
and putting the PDCCH candidates to be distinguished into a new search space in the current BWP, wherein the index number of the new search space is configured as the unoccupied index number in the current BWP.
Optionally, the new search space configures the number of PDCCH candidates included in each aggregation level, and other configuration parameters of the new search space are the same as configuration parameters corresponding to the original search space.
Optionally, the offset shifting unit 903 is specifically configured to, when shifting the second target search space:
determining a standby control resource set to which the second target search space is transferred; the second target search space is transferred to the set of standby control resources.
The standby control resource set is a preset control resource set, and the preset control resource set is a previous control resource set or a next control resource set adjacent to the control resource set associated with the second target search space, or a predefined default control resource set.
Optionally, the offset shifting unit 903, when determining the standby control resource set to which the second target search space is shifted, is specifically configured to:
receiving second configuration information sent by the base station; the set of standby control resources to transfer to is determined from second configuration information of a second target search space.
Optionally, the standby control resource set is a control resource set configured in the current BWP, and the standby control resource set is a control resource set specific to the terminal device.
Optionally, the detection receiving unit 904, before detecting and receiving the corresponding PDCCH according to the actual transmission position, is further configured to:
detecting and receiving a corresponding PDCCH according to an initial transmission position corresponding to each PDCCH candidate to be distinguished;
the detection receiving unit 904, when detecting and receiving the corresponding PDCCH according to the actual transmission position, is specifically configured to:
and if the corresponding PDCCH is not received, detecting and receiving the corresponding PDCCH according to the actual transmission position. When the corresponding PDCCH is detected and received according to the actual transmission position, the sum of the times of detecting whether the corresponding PDCCH needs to be received at the transmission position corresponding to the PDCCH candidate in the current time slot is less than the maximum blind detection time in the current time slot.
The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.
Example ten
Fig. 16 is a schematic structural diagram of a transmission apparatus for completely overlapping pdcch candidates according to still another embodiment of the present invention, and as shown in fig. 16, the transmission apparatus for completely overlapping pdcch candidates according to this embodiment is located in a base station, and then the transmission apparatus 1000 for completely overlapping pdcch candidates according to this embodiment includes: determination section 1001, offset shift section 1002, and transmission section 1003.
The determining unit 1001 is configured to determine completely overlapped PDCCH candidates of a physical downlink control channel to be distinguished, where the PDCCH candidates to be distinguished are from different search spaces. Determining unit 1001 is further configured to determine a first target search space or a target PDCCH candidate for shifting from the search spaces, or determine a second target search space for transferring from the search spaces. An offset shifting unit 1002, configured to shift the first target search space or the target PDCCH candidate, or shift the second target search space. The determining unit 1001 is further configured to determine an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transition result. A sending unit 1003, configured to send a corresponding PDCCH according to the actual transmission position.
Optionally, the first target search space is any one of the search spaces; or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
Optionally, the offset shifting unit 1002, when shifting the first target search space or the target PDCCH candidate, is specifically configured to:
determining a first offset of a first target search space or a second offset of a target PDCCH candidate; and shifting the first target search space in the associated control resource set according to the first offset, or shifting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
Optionally, the determining unit 1001, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, is specifically configured to:
acquiring a search space offset preset by a protocol with a terminal device or a preset PDCCH candidate offset; and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
Optionally, the sending unit 1003 is further configured to:
and sending the first configuration information to the terminal equipment so that the terminal equipment determines a first offset from the first configuration information of the first target search space or determines a second offset from the first configuration information of the search space corresponding to the target PDCCH candidate.
Optionally, the second target search space is any one of the search spaces; or the second target search space is a new search space constructed by the PDCCH candidates to be distinguished in any one search space.
Optionally, when the offset shifting unit 1002 shifts the second target search space, it is specifically configured to:
determining a standby control resource set to which the second target search space is transferred; the second target search space is transferred to the set of standby control resources.
Optionally, the sending unit 1003 is further configured to:
and sending second configuration information to the terminal equipment so that the terminal equipment determines the standby control resource set to be transferred from the second configuration information of the second target search space.
The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not described again.
It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
EXAMPLE eleven
An eleventh embodiment of the present application provides a processor-readable storage medium, where a computer program is stored, and the computer program is configured to enable a processor to execute the transmission method for completely overlapping pdcch candidates according to any one of the first to sixth embodiments.
The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid State Disks (SSDs)), etc.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (55)

1. A transmission method of completely overlapped physical downlink control channel candidates is applied to a terminal device, and the method comprises the following steps:
acquiring completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively;
determining a first target search space or a target PDCCH candidate for shifting from the search spaces, or determining a second target search space for transferring from the search spaces;
shifting the first target search space or the target PDCCH candidate, or transferring the second target search space;
and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position.
2. The method of claim 1, wherein the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
3. The method of claim 1, wherein the offsetting the first target search space or the target PDCCH candidate comprises:
determining a first offset of the first target search space or a second offset of the target PDCCH candidate;
and offsetting the first target search space in the associated control resource set according to the first offset, or offsetting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
4. The method of claim 3, wherein the determining the first offset of the first target search space or the second offset of the target PDCCH candidate comprises:
acquiring a search space offset preset by a protocol with a base station or a preset PDCCH candidate offset;
and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
5. The method of claim 3, wherein the determining the first offset of the first target search space or the second offset of the target PDCCH candidate comprises:
receiving first configuration information sent by a base station;
determining the first offset from first configuration information of a first target search space or determining the second offset from first configuration information of a search space corresponding to the target PDCCH candidate.
6. The method according to claim 4 or 5, wherein the first offset is a first predefined number of CCEs, and the first predefined number of CCEs comprises any one of the following CCE numbers:
CCE quantity occupied by the whole target search space, CCE quantity occupied by partial search space in the target search space, and CCE quantity occupied by any PDCCH candidate to be distinguished;
the second offset is a second predefined number of CCEs, and the second predefined number of CCEs is the number of CCEs occupied by any PDCCH candidate to be distinguished.
7. The method of claim 6, wherein when the first offset and the second offset are the number of CCEs occupied by any one PDCCH candidate to be distinguished, both the first offset and the second offset are the maximum number of CCEs occupied by each PDCCH candidate to be distinguished.
8. The method of claim 1, wherein after the offsetting the target PDCCH candidate, further comprising:
and if the target PDCCH candidate after the offset is completely overlapped with the PDCCH candidate in any search space again, continuing to offset the target PDCCH candidate after the offset until the target PDCCH candidate is not completely overlapped with the PDCCH candidate in any search space any more.
9. The method of claim 8, wherein the offset number is less than or equal to a preset offset number threshold, and wherein the preset offset number threshold is preset or configured by higher layer signaling.
10. The method of claim 1, wherein the second target search space is any one of the search spaces;
or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
11. The method of claim 10, wherein the second target search space is a new search space formed by PDCCH candidates to be distinguished in any one search space, and the method further comprises:
and putting the PDCCH candidates to be distinguished into a new search space in the current bandwidth slice BWP, wherein the index number of the new search space is the index number of the original search space corresponding to the PDCCH candidates to be distinguished.
12. The method of claim 10, wherein the second target search space is a new search space formed by PDCCH candidates to be distinguished in any one search space, and the method further comprises:
and putting the PDCCH candidates to be distinguished into a new search space in the current BWP, wherein the index number of the new search space is configured as an unoccupied index number in the current BWP.
13. The method according to claim 11 or 12, wherein the new search space configures the number of PDCCH candidates included in each aggregation level, and other configuration parameters of the new search space are the same as those corresponding to the original search space.
14. The method of claim 10, wherein the transferring the second target search space comprises:
determining a set of standby control resources to which the second target search space is transferred;
transferring the second target search space into a set of standby control resources.
15. The method of claim 14, wherein the reserved control resource set is a predetermined control resource set, and the predetermined control resource set is a previous control resource set or a next control resource set adjacent to the control resource set associated with the second target search space, or is a predefined default control resource set.
16. The method of claim 14, wherein the determining the set of standby control resources to which the second target search space is transferred comprises:
receiving second configuration information sent by the base station;
the set of standby control resources to transfer to is determined from second configuration information of a second target search space.
17. The method according to claim 15 or 16, wherein the set of standby control resources is a set of control resources configured within a current BWP, and wherein the set of standby control resources is a set of control resources specific to a terminal device.
18. The method of claim 1, wherein before detecting and receiving the corresponding PDCCH according to the actual transmission location, further comprising:
detecting and receiving a corresponding PDCCH according to an initial transmission position corresponding to each PDCCH candidate to be distinguished;
the detecting and receiving the corresponding PDCCH according to the actual transmission position comprises:
if the corresponding PDCCH is not received, detecting and receiving the corresponding PDCCH according to the actual transmission position;
and when detecting and receiving the corresponding PDCCH according to the actual transmission position, detecting whether the corresponding PDCCH exists in the transmission position corresponding to the PDCCH candidate in the current time slot or not, wherein the sum of the times of receiving the corresponding PDCCH is less than the maximum blind detection time in the current time slot.
19. A transmission method of completely overlapped physical downlink control channel candidates, wherein the method is applied to a base station, and the method comprises:
determining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively;
determining a first target search space or a target PDCCH candidate for shifting from the search spaces, or determining a second target search space for transferring from the search spaces;
shifting the first target search space or the target PDCCH candidate, or transferring the second target search space;
and determining an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and transmitting the corresponding PDCCH according to the actual transmission position.
20. The method of claim 19, wherein the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
21. The method of claim 19, wherein the offsetting the first target search space or the target PDCCH candidate comprises:
determining a first offset of the first target search space or a second offset of the target PDCCH candidate;
and offsetting the first target search space in the associated control resource set according to the first offset, or offsetting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
22. The method of claim 21, wherein the determining the first offset of the first target search space or the second offset of the target PDCCH candidate comprises:
acquiring a search space offset preset by a protocol with a terminal device or a preset PDCCH candidate offset;
and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
23. The method of claim 21, wherein after determining the first offset of the first target search space or the second offset of the target PDCCH candidate, further comprising:
and sending first configuration information to the terminal equipment so that the terminal equipment determines the first offset from the first configuration information of a first target search space or determines the second offset from the first configuration information of a search space corresponding to the target PDCCH candidate.
24. The method of claim 19, wherein the second target search space is any one of the search spaces;
or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
25. The method of claim 24, wherein the transferring the second target search space comprises:
determining a set of standby control resources to which the second target search space is transferred;
transferring the second target search space into a set of standby control resources.
26. The method of claim 25, wherein after determining the set of standby control resources to which the second target search space is transferred, further comprising:
and sending second configuration information to the terminal equipment so that the terminal equipment determines the standby control resource set to be transferred from the second configuration information of the second target search space.
27. An apparatus for distinguishing completely overlapping physical downlink control channel candidates, the apparatus being located in a terminal device, the apparatus comprising:
memory, transceiver, processor:
a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:
acquiring completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively;
determining a first target search space or a target PDCCH candidate for shifting from the search space, or determining a second target search space for transferring from the search space;
shifting the first target search space or the target PDCCH candidate, or transferring the second target search space;
and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and detecting and receiving the corresponding PDCCH according to the actual transmission position.
28. The apparatus of claim 27, wherein the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
29. The apparatus of claim 27, wherein the processor, when shifting the first target search space or the target PDCCH candidate, is specifically configured to:
determining a first offset of the first target search space or a second offset of the target PDCCH candidate;
and offsetting the first target search space in the associated control resource set according to the first offset, or offsetting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
30. The apparatus of claim 29, wherein the processor, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, is specifically configured to:
acquiring a search space offset preset by a protocol with a base station or a preset PDCCH candidate offset;
and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
31. The apparatus of claim 29, wherein the processor, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, is specifically configured to:
receiving first configuration information sent by a base station;
determining the first offset from first configuration information of a first target search space or determining the second offset from first configuration information of a search space corresponding to the target PDCCH candidate.
32. The apparatus of claim 30 or 31, wherein the first offset is a first predefined number of CCEs, and wherein the first predefined number of CCEs comprises any of the following CCE numbers:
CCE number occupied by the whole target search space, CCE number occupied by part of search space in the target search space, and CCE number occupied by any PDCCH candidate to be distinguished;
the second offset is a second predefined number of CCEs, and the second predefined number of CCEs is the number of CCEs occupied by any PDCCH candidate to be distinguished.
33. The apparatus of claim 32, wherein when the first offset and the second offset are the number of CCEs occupied by any PDCCH candidate to be distinguished, the first offset and the second offset are both the maximum number of CCEs occupied by each PDCCH candidate to be distinguished.
34. The apparatus of claim 27, wherein the processor, after shifting the target PDCCH candidate, further comprises:
and if the target PDCCH candidate after the offset completely overlaps with the PDCCH candidate in any search space again, continuing to offset the target PDCCH candidate after the offset until the target PDCCH candidate and the PDCCH candidate in any search space are not completely overlapped any more.
35. The apparatus of claim 34, wherein the offset number is less than or equal to a preset offset number threshold, and wherein the preset offset number threshold is preset or configured by higher layer signaling.
36. The apparatus of claim 27, wherein the second target search space is any one of the search spaces;
or the second target search space is a new search space constructed by PDCCH candidates to be distinguished in any search space.
37. The apparatus of claim 36, wherein the second target search space is a new search space formed by PDCCH candidates to be distinguished in any one search space, and wherein the processor is further configured to:
and putting the PDCCH candidates to be distinguished into a new search space in the current bandwidth slice BWP, wherein the index number of the new search space is the index number of the original search space corresponding to the PDCCH candidates to be distinguished.
38. The apparatus of claim 36, wherein the second target search space is a new search space formed by PDCCH candidates to be distinguished in any one search space, and wherein the processor is further configured to:
and putting the PDCCH candidates to be distinguished into a new search space in the current BWP, wherein the index number of the new search space is configured as the unoccupied index number in the current BWP.
39. The apparatus of claim 37 or 38, wherein the new search space configures the number of PDCCH candidates included in each aggregation level, and other configuration parameters of the new search space are the same as those of the original search space.
40. The apparatus of claim 36, wherein the processor, when configured to transfer the second target search space, specifically comprises:
determining a set of standby control resources to which the second target search space is transferred;
transferring the second target search space into a set of standby control resources.
41. The apparatus of claim 40, wherein the reserved control resource set is a predetermined control resource set, and the predetermined control resource set is a previous control resource set or a next control resource set adjacent to the control resource set associated with the second target search space, or is a predefined default control resource set.
42. The apparatus of claim 40, wherein the processor, when determining the set of standby control resources to which the second target search space is transferred, is configured to:
receiving second configuration information sent by the base station;
the set of standby control resources to transfer to is determined from second configuration information of a second target search space.
43. The apparatus of claim 41 or 42, wherein the backup control resource set is a control resource set configured in a current BWP, and wherein the backup control resource set is a terminal device-specific control resource set.
44. The apparatus of claim 27, wherein the processor, prior to detecting and receiving the corresponding PDCCH according to the actual transmission location, further comprises:
detecting and receiving a corresponding PDCCH according to an initial transmission position corresponding to each PDCCH candidate to be distinguished;
the detecting and receiving the corresponding PDCCH according to the actual transmission position comprises:
if the corresponding PDCCH is not received, detecting and receiving the corresponding PDCCH according to the actual transmission position;
when the corresponding PDCCH is detected and received according to the actual transmission position, the sum of the times of detecting whether the corresponding PDCCH needs to be received at the transmission position corresponding to the PDCCH candidate in the current time slot is less than the maximum blind detection time in the current time slot.
45. An apparatus for transmitting completely overlapping physical downlink control channel candidates, the apparatus being located in a base station, the apparatus comprising:
memory, transceiver, processor:
a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:
determining completely overlapped Physical Downlink Control Channel (PDCCH) candidates to be distinguished, wherein the PDCCH candidates to be distinguished come from different search spaces respectively;
determining a first target search space or a target PDCCH candidate for shifting from the search spaces, or determining a second target search space for transferring from the search spaces;
shifting the first target search space or the target PDCCH candidate, or transferring the second target search space;
and determining the actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result, and sending the corresponding PDCCH according to the actual transmission position.
46. The apparatus of claim 45, wherein the first target search space is any one of the search spaces;
or, the target PDCCH candidate is a PDCCH candidate to be distinguished in any search space.
47. The apparatus of claim 45, wherein the processor, when shifting the first target search space or the target PDCCH candidate, specifically comprises:
determining a first offset of the first target search space or a second offset of the target PDCCH candidate;
and shifting the first target search space in the associated control resource set according to the first offset, or shifting the target PDCCH candidate in the control resource set associated with the corresponding search space according to the second offset.
48. The apparatus of claim 47, wherein the processor, when determining the first offset of the first target search space or the second offset of the target PDCCH candidate, specifically comprises:
acquiring a search space offset preset by a protocol with a terminal device or a preset PDCCH candidate offset;
and determining the preset search space offset as a first offset, or determining the preset PDCCH candidate offset as a second offset.
49. The apparatus of claim 47, wherein the processor, after determining the first offset for the first target search space or the second offset for the target PDCCH candidate, further comprises:
and sending first configuration information to the terminal equipment so that the terminal equipment determines the first offset from the first configuration information of a first target search space or determines the second offset from the first configuration information of a search space corresponding to the target PDCCH candidate.
50. The apparatus of claim 45, wherein the second target search space is any one of the search spaces;
or the second target search space is a new search space constructed by the PDCCH candidates to be distinguished in any search space.
51. The apparatus as claimed in claim 50, wherein the processor, when configured to transfer the second target search space, specifically comprises:
determining a set of standby control resources to which the second target search space is transferred;
transferring the second target search space into a set of standby control resources.
52. The apparatus of claim 51, wherein after determining the set of standby control resources to which the second target search space is transferred, the processor further comprises:
and sending second configuration information to the terminal equipment so that the terminal equipment determines the standby control resource set to be transferred from the second configuration information of the second target search space.
53. An apparatus for transmitting full overlap physical downlink control channel candidates, the apparatus being located in a terminal device, the apparatus comprising:
an obtaining unit, configured to obtain completely overlapped PDCCH candidates of a physical downlink control channel to be distinguished, where the PDCCH candidates to be distinguished are from different search spaces respectively;
a determining unit, configured to determine a first target search space or a target PDCCH candidate for performing an offset from the search spaces, or determine a second target search space for performing a transition from the search spaces;
an offset shifting unit, configured to shift the first target search space or the target PDCCH candidate, or shift the second target search space;
the determining unit is further configured to determine an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result;
and the detection receiving unit is used for detecting and receiving the corresponding PDCCH according to the actual transmission position.
54. An apparatus for transmitting completely overlapping physical downlink control channel candidates, the apparatus being located in a base station, the apparatus comprising:
a determining unit, configured to determine completely overlapped PDCCH candidates of a physical downlink control channel to be distinguished, where the PDCCH candidates to be distinguished are from different search spaces respectively;
the determining unit is further configured to determine a first target search space or a target PDCCH candidate for performing an offset from the search space, or determine a second target search space for performing a transition from the search space;
an offset shifting unit, configured to shift the first target search space or the target PDCCH candidate, or shift the second target search space;
the determining unit is further configured to determine an actual transmission position corresponding to each PDCCH candidate to be distinguished according to the offset result or the transfer result;
and the sending unit is used for sending the corresponding PDCCH according to the actual transmission position.
55. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1-18 or 19-26.
CN202110431522.7A 2021-04-21 2021-04-21 Transmission method, device and medium for completely overlapping physical downlink control channel candidates Pending CN115226237A (en)

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